title: Directive 2005/55/EC of the European Parliament and of the Council of 28 September 2005 on the approximation of the laws of the Member States relating to the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines for use in vehicles, and the emission of gaseous pollutants from positive-ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles   (Text with EEA relevance)

text:
               20.10.2005

               EN

               Official Journal of the European Union

               L 275/1

      DIRECTIVE 2005/55/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL

   of 28 September 2005
   on the approximation of the laws of the Member States relating to the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines for use in vehicles, and the emission of gaseous pollutants from positive-ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles
   (Text with EEA relevance)
   THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION,
   Having regard to the Treaty establishing the European Community, and in particular Article 95 thereof,
   Having regard to the proposal from the Commission,
   Having regard to the opinion of the European Economic and Social Committee (1),
   Acting in accordance with the procedure laid down in Article 251 of the Treaty (2),
   Whereas:

               (1)

               Council Directive 88/77/EEC of 3 December 1987 on the approximation of the laws of the Member States relating to the measures to be taken against the emission of gaseous and particulate pollutants from compression ignition engines for use in vehicles, and the emission of gaseous pollutants from positive ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles (3) is one of the separate Directives under the type-approval procedure laid down by Council Directive 70/156/EEC of 6 February 1970 on the approximation of the laws of the Member States relating to the type-approval of motor vehicles and their trailers (4). Directive 88/77/EEC has been substantially amended several times to introduce successively more stringent pollutant emission limits. Since further amendments are to be made, it should be recast in the interests of clarity.

               (2)

               Council Directive 91/542/EEC (5) amending Directive 88/77/EEC, Directive 1999/96/EC of the European Parliament and of the Council of 13 December 1999 on the approximation of the laws of the Member States relating to measures to be taken against the emission of gaseous and particulate pollutants from compression ignition engines for use in vehicles, and the emission of gaseous pollutants from positive ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles and amending Council Directive 88/77/EEC (6), and Commission Directive 2001/27/EC (7) adapting to technical progress Council Directive 88/77/EEC have introduced provisions which, while being autonomous, are closely linked to the scheme established under Directive 88/77/EEC. Those autonomous provisions should be fully integrated into the recast of Directive 88/77/EEC in the interests of clarity and legal certainty.

               (3)

               It is necessary that all the Member States adopt the same requirements, in order, in particular, to permit the implementation, for each vehicle type, of the EC type-approval system which is the subject of Directive 70/156/EEC.

               (4)

               The Commission’s programme on air quality, road transport emissions, fuels and emission abatement technologies, hereinafter ‘the first Auto-Oil programme’, showed that further reductions in pollutant emissions from heavy-duty vehicles were necessary with a view to achieving future air quality standards.

               (5)

               Reductions in emission limits applicable from the year 2000, corresponding to abatements of 30 % in emissions of carbon monoxide, total hydrocarbons, oxides of nitrogen and particulate matter were identified by the first Auto-Oil programme as key measures for the achievement of medium-term air quality. A reduction of 30 % in exhaust smoke opacity should additionally contribute to the reduction of particulate matter. Additional reductions in emission limits applicable from the year 2005, corresponding to additional abatements of 30 % in carbon monoxide, total hydrocarbons and oxides of nitrogen and 80 % in particulate matter should greatly contribute to air quality improvement in the medium to longer term. The additional limit for oxides of nitrogen applicable in the year 2008 should result in a further 43 % reduction in the emission limit for this pollutant.

               (6)

               Type-approval tests for gaseous and particulate pollutants and smoke opacity are applicable to allow for a more representative evaluation of the emissions performance of engines under test conditions that more closely resemble those encountered by vehicles in-service. Since 2000 conventional compression-ignition engines and those compression-ignition engines fitted with certain types of emission control equipment have been tested over a steady-state test cycle and using a new load response test for smoke opacity. Compression-ignition engines fitted with advanced emission control systems have, in addition, been tested over a new transient test cycle. From 2005, all compression-ignition engines should be tested on all those test cycles. Gas fuelled engines are only tested on the new transient test cycle.

               (7)

               Under all randomly selected load conditions within a defined operating range, the limit values may not be exceeded by more than an appropriate percentage.

               (8)

               In laying down new standards and test procedures, it is necessary to take account of the impact on air quality of future traffic growth in the Community. The work undertaken by the Commission in this sphere has shown that the motor industry in the Community has made great strides in the perfection of the technology allowing a considerable reduction in emissions of gaseous and particulate pollutants. However, it is still necessary to press for further improvements in emission limits and other technical requirements in the interests of environmental protection and public health. In particular, the results of ongoing research into the characteristics of ultra-fine particulates should be taken into account in any future measures.

               (9)

               It is necessary that further improvements be made to the quality of motor fuels to enable the efficient and durable performance of emission control systems in service.

               (10)

               New provisions for on-board diagnostics (OBD) should be introduced from 2005 with a view to facilitating the immediate detection of the deterioration or failure of engine emission control equipment. This should enhance diagnostic and repair capability, significantly improving the sustainable emission performance of in-service heavy-duty vehicles. Since, on the worldwide stage, OBD for heavy-duty diesel engines is in its infancy, it should be introduced in the Community in two stages to allow for system development so that the OBD system does not give false indications. In order to assist the Member States in ensuring that the owners and operators of heavy-duty vehicles meet their obligation to repair faults indicated by the OBD system, the distance covered or the time that has elapsed after a fault has been indicated to the driver should be recorded.

               (11)

               Compression-ignition engines are inherently durable and have demonstrated that, with proper and effective maintenance, they can retain a high level of emissions performance over the significantly high distances travelled by heavy-duty vehicles in the course of commercial operations. However, future emission standards will push the introduction of emission control systems downstream of the engine, such as deNOx systems, diesel particulate filters and systems that are a combination of both and, perhaps, other systems yet to be defined. It is therefore necessary to establish a useful life requirement on which to base procedures for ensuring the compliance of an engine’s emission control system throughout that reference period. In establishing such a requirement, due account should be taken of the considerable distances covered by heavy-duty vehicles, of the need to incorporate appropriate and timely maintenance and of the possibility of type-approving category N1 vehicles in accordance with either this Directive or Council Directive 70/220/EEC of 20 March 1970 on the approximation of the laws of the Member States on measures to be taken against air pollution by emissions from motor vehicles (8).

               (12)

               Member States should be allowed, by means of tax incentives, to expedite the placing on the market of vehicles that satisfy the requirements adopted at Community level, provided that such incentives comply with the provisions of the Treaty and satisfy certain conditions intended to prevent distortion of the internal market. This Directive does not affect the right of the Member States to include emissions of pollutants and other substances in the basis for calculating road traffic taxes on motor vehicles.

               (13)

               Since some of those tax incentives are State aids under Article 87(1) of the Treaty, they would have to be notified to the Commission under Article 88(3) of the Treaty for evaluation in accordance with the relevant criteria of compatibility. The notification of such measures in accordance with this Directive should be without prejudice to the obligation to notify under Article 88(3) of the Treaty.

               (14)

               With the aim of simplifying and accelerating the procedure, the Commission should be entrusted with the task of adopting measures implementing the fundamental provisions laid down in this Directive as well as the measures for adapting the annexes of this Directive to scientific and technical progress.

               (15)

               The measures necessary for the implementation of this Directive and its adaptation to scientific and technical progress should be adopted in accordance with Council Decision 1999/468/EC of 28 June 1999 laying down the procedures for the exercise of implementing powers conferred on the Commission (9).

               (16)

               The Commission should keep under review the need to introduce emission limits for pollutants which are as yet unregulated and which arise as a consequence of the wider use of new alternative fuels and new exhaust emission control systems.

               (17)

               The Commission should submit proposals it may deem appropriate for a further stage for limit values for NOx and particulate emissions as soon as possible.

               (18)

               Since the objective of this Directive, namely the realisation of the internal market through the introduction of common technical requirements concerning gaseous and particulate emissions for all types of vehicles, cannot be sufficiently achieved by the Member States and can therefore, by reason of the scale of the action, be better achieved at Community level, the Community may adopt measures, in accordance with the principle of subsidiarity, as set out in Article 5 of the Treaty. In accordance with the principle of proportionality, as set out in that Article, this Directive does not go beyond what is necessary in order to achieve this objective.

               (19)

               The obligation to transpose this Directive into national law should be confined to those provisions which represent a substantive change as compared with the earlier Directives. The obligation to transpose the provisions which are unchanged arises under the earlier Directives.

               (20)

               This Directive should be without prejudice to the obligations of the Member States relating to the time limits for transposition into national law and application of the Directives set out in Annex IX, Part B.

         HAVE ADOPTED THIS DIRECTIVE:
   Article 1
   Definitions
   For the purposes of this Directive the following definitions shall apply:

               (a)

               ‘vehicle’ means any vehicle as defined in Article 2 of Directive 70/156/EEC and propelled by a compression-ignition or gas engine, with the exception of vehicles of category M1 with a technically permissible maximum laden mass less than or equal to 3,5 tonnes;

               (b)

               ‘compression-ignition or gas engine’ means the motive propulsion source of a vehicle for which type-approval as a separate technical unit, as defined in Article 2 of Directive 70/156/EEC, may be granted;

               (c)

               ‘enhanced environment-friendly vehicle (EEV)’ means a vehicle propelled by an engine which complies with the permissive emission limit values set out in row C of the tables in Section 6.2.1 of Annex I.

         Article 2
   Obligations of the Member States
   1.   For types of compression-ignition or gas engines and types of vehicle propelled by compression-ignition or gas engines, where the requirements set out in Annexes I to VIII are not met and in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine do not comply with the limit values set out in row A of the tables in Section 6.2.1 of Annex I, Member States:

               (a)

               shall refuse to grant EC type-approval pursuant to Article 4(1) of Directive 70/156/EEC; and

               (b)

               shall refuse national type-approval.

         2.   Except in the case of vehicles and engines intended for export to third countries or replacement engines for in-service vehicles, Member States shall, where the requirements set out in Annexes I to VIII are not met and in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine do not comply with the limit values set out in row A of the tables in Section 6.2.1 of Annex I:

               (a)

               consider certificates of conformity which accompany new vehicles or new engines pursuant to Directive 70/156/EEC as no longer valid for the purposes of Article 7(1) of that Directive; and

               (b)

               prohibit the registration, sale, entry into service or use of new vehicles propelled by a compression-ignition or gas engine and the sale or use of new compression-ignition or gas engines.

         3.   Without prejudice to paragraphs 1 and 2, with effect from 1 October 2003 and except in the case of vehicles and engines intended for export to third countries or replacement engines for in-service vehicles, Member States shall, for types of gas engines and types of vehicles propelled by a gas engine which do not comply with the requirements set out in Annexes I to VIII:

               (a)

               consider certificates of conformity which accompany new vehicles or new engines pursuant to Directive 70/156/EEC as no longer valid for the purposes of Article 7(1) of that Directive; and

               (b)

               prohibit the registration, sale, entry into service or use of new vehicles and the sale or use of new engines.

         4.   If the requirements set out in Annexes I to VIII and in Articles 3 and 4 are satisfied, in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine comply with the limit values set out in row B1 or row B2 or with the permissive limit values set out in row C of the tables in Section 6.2.1 of Annex I, no Member State may, on grounds relating to the gaseous and particulate pollutants and opacity of smoke emissions from an engine:

               (a)

               refuse to grant EC type-approval pursuant to Article 4(1) of Directive 70/156/EEC or to grant national type-approval for a type of vehicle propelled by a compression-ignition or gas engine;

               (b)

               prohibit the registration, sale, entry into service or use of new vehicles propelled by a compression-ignition or gas engine;

               (c)

               refuse to grant EC type-approval for a type of compression-ignition or gas engine;

               (d)

               prohibit the sale or use of new compression-ignition or gas engines.

         5.   With effect from 1 October 2005, for types of compression-ignition or gas engines and types of vehicle propelled by compression-ignition or gas engines which do not meet the requirements set out in Annexes I to VIII and in Articles 3 and 4 and in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine do not comply with the limit values set out in row B1 of the tables in Section 6.2.1 of Annex I, Member States:

               (a)

               shall refuse to grant EC type-approval pursuant to Article 4(1) of Directive 70/156/EEC; and

               (b)

               shall refuse national type-approval.

         6.   With effect from 1 October 2006 and except in the case of vehicles and engines intended for export to third countries or replacement engines for in-service vehicles, Member States shall, where the requirements set out in Annexes I to VIII and in Articles 3 and 4 are not met and in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine do not comply with the limit values set out in row B1 of the tables in Section 6.2.1 of Annex I:

               (a)

               consider certificates of conformity which accompany new vehicles or new engines pursuant to Directive 70/156/EEC as no longer valid for the purposes of Article 7(1) of that Directive; and

               (b)

               prohibit the registration, sale, entry into service or use of new vehicles propelled by a compression-ignition or gas engine and the sale or use of new compression-ignition or gas engines.

         7.   With effect from 1 October 2008, for types of compression-ignition or gas engines and types of vehicle propelled by compression-ignition or gas engines which do not meet the requirements set out in Annexes I to VIII and in Articles 3 and 4 and in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine do not comply with the limit values set out in row B2 of the tables in Section 6.2.1 of Annex I, Member States:

               (a)

               shall refuse to grant EC type-approval pursuant to Article 4(1) of Directive 70/156/EEC; and

               (b)

               shall refuse national type-approval.

         8.   With effect from 1 October 2009 and except in the case of vehicles and engines intended for export to third countries or replacement engines for in-service vehicles, Member States shall, where the requirements set out in Annexes I to VIII and in Articles 3 and 4 are not met and in particular where the emissions of gaseous and particulate pollutants and opacity of smoke from the engine do not comply with the limit values set out in row B2 of the tables in Section 6.2.1 of Annex I:

               (a)

               consider certificates of conformity which accompany new vehicles or new engines pursuant to Directive 70/156/EEC as no longer valid for the purposes of Article 7(1) of that Directive; and

               (b)

               prohibit the registration, sale, entry into service or use of new vehicles propelled by a compression-ignition or gas engine and the sale or use of new compression-ignition or gas engines.

         9.   In accordance with paragraph 4 an engine that satisfies the requirements set out in Annexes I to VIII, and, in particular, complies with the limit values set out in row C of the tables in Section 6.2.1 of Annex I shall be considered as complying with the requirements set out in paragraphs 1, 2 and 3.
   In accordance with paragraph 4 an engine that satisfies the requirements set out in Annexes I to VIII and in Articles 3 and 4 and, in particular, complies with the limit values set out in row C of the tables in Section 6.2.1 of Annex I shall be considered as complying with the requirements set out in paragraphs 1 to 3 and 5 to 8.
   10.   For compression-ignition or gas engines that must comply with the limit values set out in Section 6.2.1 of Annex I under the type-approval system, the following shall apply:
   under all randomly selected load conditions, belonging to a definite control area and with the exception of specified engine operating conditions which are not subject to such a provision, the emissions sampled during a time duration as small as 30 seconds shall not exceed by more than 100 % the limit values in rows B2 and C of the tables in Section 6.2.1 of Annex I. The control area to which the percentage not to be exceeded shall apply, the excluded engine operating conditions and other appropriate conditions shall be defined in accordance with the procedure referred to in Article 7(1).
   Article 3
   Durability of emission control systems
   1.   From 1 October 2005 for new type-approvals and from 1 October 2006 for all type-approvals, the manufacturer shall demonstrate that a compression-ignition or gas engine type-approved by reference to the limit values set out in row B1 or row B2 or row C of the tables in Section 6.2.1 of Annex I will comply with those limit values for a useful life of:

               (a)

               100 000 km or five years, whichever is the sooner, in the case of engines to be fitted to vehicles of category N1 and M2;

               (b)

               200 000 km or six years, whichever is the sooner, in the case of engines to be fitted to vehicles of category N2, N3 with a maximum technically permissible mass not exceeding 16 tonnes and M3 Class I, Class II and Class A, and Class B with a maximum technically permissible mass not exceeding 7,5 tonnes;

               (c)

               500 000 km or seven years, whichever is the sooner, in the case of engines to be fitted to vehicles of category N3 with a maximum technically permissible mass exceeding 16 tonnes and M3, Class III and Class B with a maximum technically permissible mass exceeding 7,5 tonnes.

         From 1 October 2005, for new types, and from 1 October 2006, for all types, type-approvals granted to vehicles shall also require confirmation of the correct operation of the emission control devices during the normal life of the vehicle under normal conditions of use (conformity of in-service vehicles properly maintained and used).
   2.   The measures for the implementation of paragraph 1 shall be adopted by 28 December 2005 at the latest.
   Article 4
   On-board diagnostic systems
   1.   From 1 October 2005 for new type-approvals of vehicles and from 1 October 2006 for all type-approvals, a compression-ignition engine type-approved by reference to the emission limit values set out in row B1 or row C of the tables in Section 6.2.1 of Annex I or a vehicle propelled by such an engine shall be fitted with an on-board diagnostic (OBD) system that signals the presence of a fault to the driver if the OBD threshold limits set out in row B1 or row C of the table in paragraph 3 are exceeded.
   In the case of exhaust after-treatment systems, the OBD system may monitor for major functional failure any of the following:

               (a)

               a catalyst, where fitted as a separate unit, whether or not it is part of a deNOx system or a diesel particulate filter;

               (b)

               a deNOx system, where fitted;

               (c)

               a diesel particulate filter, where fitted;

               (d)

               a combined deNOx-diesel particulate filter system.

         2.   From 1 October 2008 for new type-approvals and from 1 October 2009 for all type-approvals, a compression-ignition or a gas engine type-approved by reference to the emission limit values set out in row B2 or row C of the tables in Section 6.2.1 of Annex I, or a vehicle propelled by such an engine shall be fitted with an OBD system that signals the presence of a fault to the driver if the OBD threshold limits set out in row B2 or row C of the table in paragraph 3 are exceeded.
   The OBD system shall also include an interface between the engine electronic control unit (EECU) and any other engine or vehicle electrical or electronic systems that provide an input to or receive an output from the EECU and which affect the correct functioning of the emission control system, such as the interface between the EECU and a transmission electronic control unit.
   3.   The OBD threshold limits shall be as follows:

               Row

               Compression-ignition engines

               Mass of oxides of nitrogen
               (NOx) g/kWh

               Mass of particulate
               (PT) g/kWh

               B1 (2005)

               7,0

               0,1

               B2 (2008)

               7,0

               0,1

               C (EEV)

               7,0

               0,1

         4.   Full and uniform access to OBD information must be provided for the purposes of testing, diagnosis, servicing and repair in keeping with the relevant provisions of Directive 70/220/EEC and provisions regarding replacement components ensuring compatibility with OBD systems.
   5.   The measures for the implementation of paragraphs 1, 2 and 3 shall be adopted by 28 December 2005 at the latest.
   Article 5
   Emission control systems using consumable reagents
   In defining the measures necessary to implement Article 4, as provided for by Article 7(1), the Commission shall, if appropriate, include technical measures to minimise the risk of emission control systems using consumable reagents being inadequately maintained in service. In addition, and if appropriate, measures shall be included to ensure that emissions of ammonia due to the use of consumable reagents are minimised.
   Article 6
   Tax incentives
   1.   Member States may make provision for tax incentives only in respect of vehicles which comply with this Directive. Such incentives shall comply with the provisions of the Treaty, as well as with either paragraph 2 or paragraph 3 of this Article.
   2.   The incentives shall apply to all new vehicles offered for sale on the market of a Member State which comply in advance with the limit values set out in row B1 or B2 of the tables in Section 6.2.1 of Annex I.
   They shall be terminated with effect from the mandatory application of the limit values in row B1, as laid down in Article 2(6), or from the mandatory application of the limit values in row B2, as laid down in Article 2(8).
   3.   The incentives shall apply to all new vehicles offered for sale on the market of a Member State which comply with the permissive limit values set out in row C of the tables in Section 6.2.1 of Annex I.
   4.   In addition to the conditions referred to in paragraph 1, for each type of vehicle, the incentives shall not exceed the additional cost of the technical solutions introduced to ensure compliance with the limit values set out in row B1 or row B2 or with the permissive limit values set out in row C of the tables in Section 6.2.1 of Annex I, and of their installation on the vehicle.
   5.   Member States shall inform the Commission in sufficient time of plans to institute or change the tax incentives referred to in this Article, so that it can submit its observations.
   Article 7
   Implementation measures and amendments
   1.   The measures necessary for the implementation of Articles 2(10), 3 and 4 of this Directive shall be adopted by the Commission, assisted by the Committee established by Article 13(1) of Directive 70/156/EEC, in accordance with the procedure referred to in Article 13(3) of that Directive.
   2.   Amendments to this Directive which are necessary to adapt it to scientific and technical progress shall be adopted by the Commission, assisted by the committee established by Article 13(1) of Directive 70/156/EEC, in accordance with the procedure referred to in Article 13(3) of that Directive.
   Article 8
   Review and reports
   1.   The Commission shall review the need to introduce new emission limits applicable to heavy-duty vehicles and engines in respect of pollutants that are as yet unregulated. The review shall be based on the wider market introduction of new alternative fuels and on the introduction of new additive-enabled exhaust emission control systems to meet future standards laid down in this Directive. Where appropriate, the Commission shall submit a proposal to the European Parliament and the Council.
   2.   The Commission should submit to the European Parliament and the Council legislative proposals on further limits on NOx and particulate emissions for heavy-duty vehicles.
   If appropriate, it shall investigate whether setting an additional limit for particulate levels and size is necessary, and, if so, include it in the proposals.
   3.   The Commission shall report to the European Parliament and to the Council on the progress in negotiations for a worldwide harmonised duty cycle (WHDC).
   4.   The Commission shall submit a report to the European Parliament and to the Council on requirements for the operation of an on-board measurement (OBM) system. On the basis of that report, the Commission shall, where appropriate, submit a proposal for measures to include the technical specifications and corresponding annexes in order to provide for the type-approval of OBM systems which ensure at least equivalent levels of monitoring to OBD systems and which are compatible therewith.
   Article 9
   Transposition
   1.   Member States shall adopt and publish, before 9 November 2006 at the latest, the laws, regulations and administrative provisions necessary to comply with this Directive. If the adoption of the implementing measures referred to in Article 7 is delayed beyond 28 December 2005, Member States shall comply with this obligation by the transposition date provided in the Directive containing these implementing measures. They shall forthwith communicate to the Commission the text of those provisions and a correlation table between those provisions and this Directive.
   They shall apply those provisions from 9 November 2006 or, if the adoption of the implementing measures referred to in Article 7 is delayed beyond 28 December 2005, from the transposition date specified in the Directive containing these implementing measures.
   When Member States adopt those provisions, they shall contain a reference to this Directive or be accompanied by such a reference on the occasion of their official publication. They shall also include a statement that references in existing laws, regulations and administrative provisions to the Directives repealed by this Directive shall be construed as references to this Directive. Member States shall determine how such reference is to be made and how that statement is to be formulated.
   2.   Member States shall communicate to the Commission the text of the main provisions of national law which they adopt in the field covered by this Directive.
   Article 10
   Repeal
   The Directives listed in Annex IX, Part A, are repealed with effect from 9 November 2006 without prejudice to the obligations of the Member States relating to the time limits for transposition into national law and application of the Directives set out in Annex IX, Part B.
   References to the repealed Directives shall be construed as references to this Directive and shall be read in accordance with the correlation table in Annex X.
   Article 11
   Entry into force
   This Directive shall enter into force on the 20th day following its publication in the Official Journal of the European Union.
   Article 12
   Addressees
   This Directive is addressed to the Member States.

      Done at Strasbourg, 28 September 2005.

            For the European Parliament

            The President

         J. BORRELL FONTELLES

            For the Council

            The President

         D. ALEXANDER

      (1)  OJ C 108, 30.4.2004, p. 32.

      (2)  Opinion of the European Parliament of 9 March 2004 (OJ C 102 E, 28.4.2004, p. 272) and Council Decision of 19 September 2005.

      (3)  OJ L 36, 9.2.1988, p. 33. Directive as last amended by the 2003 Act of Accession.

      (4)  OJ L 42, 23.2.1970, p. 1. Directive as last amended by Commission Directive 2005/49/EC (OJ L 194, 26.7.2005, p. 12).

      (5)  OJ L 295, 25.10.1991, p. 1.

      (6)  OJ L 44, 16.2.2000, p. 1.

      (7)  OJ L 107, 18.4.2001, p. 10.

      (8)  OJ L 76, 6.4.1970, p. 1. Directive as last amended by Commission Directive 2003/76/EC (OJ L 206, 15.8.2003, p. 29).

      (9)  OJ L 184, 17.7.1999, p. 23.

      ANNEX I
      SCOPE, DEFINITIONS AND ABBREVIATIONS, APPLICATION FOR EC TYPE-APPROVAL, SPECIFICATIONS AND TESTS AND CONFORMITY OF PRODUCTION
      1.   SCOPE
      This Directive applies to the gaseous and particulate pollutants from all motor vehicles equipped with compression-ignition engines and to the gaseous pollutants from all motor vehicles equipped with positive ignition engines fuelled with natural gas or LPG, and to compression-ignition and positive ignition engines as specified in Article 1 with the exception of those vehicles of category N1, N2 and M2 for which type-approval has been granted under Council Directive 70/220/EEC of 20 March 1970 on the approximation of the laws of the Member States on measures to be taken against air pollution by emissions from motor vehicles (1).
      2.   DEFINITIONS AND ABBREVIATIONS
      For the purposes of this Directive:
      2.1.   ‘test cycle’ means a sequence of test points each with a defined speed and torque to be followed by the engine under steady state (ESC test) or transient operating conditions (ETC, ELR test);
      2.2.   ‘approval of an engine (engine family)’ means the approval of an engine type (engine family) with regard to the level of the emission of gaseous and particulate pollutants;
      2.3.   ‘diesel engine’ means an engine which works on the compression-ignition principle;
      2.4.   ‘gas engine’ means an engine which is fuelled with natural gas (NG) or liquid petroleum gas (LPG);
      2.5.   ‘engine type’ means a category of engines which do not differ in such essential respects as engine characteristics as defined in Annex II to this Directive;
      2.6.   ‘engine family’ means a manufacturers grouping of engines which, through their design as defined in Annex II, Appendix 2 to this Directive, have similar exhaust emission characteristics; all members of the family must comply with the applicable emission limit values;
      2.7.   ‘parent engine’ means an engine selected from an engine family in such a way that its emissions characteristics will be representative for that engine family;
      2.8.   ‘gaseous pollutants’ means carbon monoxide, hydrocarbons (assuming a ratio of CH1,85 for diesel, CH2,525 for LPG and CH2,93 for NG (NMHC), and an assumed molecule CH3O0,5 for ethanol-fuelled diesel engines), methane (assuming a ratio of CH4 for NG) and oxides of nitrogen, the last named being expressed in nitrogen dioxide (NO2) equivalent;
      2.9.   ‘particulate pollutants’ means any material collected on a specified filter medium after diluting the exhaust with clean filtered air so that the temperature does not exceed 325 K (52 oC);
      2.10.   ‘smoke’ means particles suspended in the exhaust stream of a diesel engine which absorb, reflect, or refract light;
      2.11.   ‘net power’ means the power in EC kW obtained on the test bench at the end of the crankshaft, or its equivalent, measured in accordance with the EC method of measuring power as set out in Council Directive 80/1269/EEC of 16 December 1980on the approximation of the laws of the Member States relating to the engine power of motor vehicles (2);
      2.12.   ‘declared maximum power (Pmax)’ means the maximum power in EC kW (net power) as declared by the manufacturer in his application for type-approval;
      2.13.   ‘per cent load’ means the fraction of the maximum available torque at an engine speed;
      2.14.   ‘ESC test’ means a test cycle consisting of 13 steady state modes to be applied in accordance with Section 6.2 of this Annex;
      2.15.   ‘ELR test’ means a test cycle consisting of a sequence of load steps at constant engine speeds to be applied in accordance with Section 6.2 of this Annex;
      2.16.   ‘ETC test’ means a test cycle consisting of 1 800 second-by-second transient modes to be applied in accordance with Section 6.2 of this Annex;
      2.17.   ‘engine operating speed range’ means the engine speed range, most frequently used during engine field operation, which lies between the low and high speeds, as set out in Annex III to this Directive;
      2.18.   ‘low speed (nlo)’ means the lowest engine speed where 50 % of the declared maximum power occurs;
      2.19.   ‘high speed (nhi)’ means the highest engine speed where 70 % of the declared maximum power occurs;
      2.20.   ‘engine speeds A, B and C’ means the test speeds within the engine operating speed range to be used for the ESC test and the ELR test, as set out in Annex III, Appendix 1 to this Directive;
      2.21.   ‘control area’ means the area between the engine speeds A and C and between 25 to 100 per cent load;
      2.22.   ‘reference speed (nref)’ means the 100 per cent speed value to be used for denormalising the relative speed values of the ETC test, as set out in Annex III, Appendix 2 to this Directive;
      2.23.   ‘opacimeter’ means an instrument designed to measure the opacity of smoke particles by means of the light extinction principle;
      2.24.   ‘NG gas range’ means one of the H or L range as defined in European Standard EN 437, dated November 1993;
      2.25.   ‘self adaptability’ means any engine device allowing the air/fuel ratio to be kept constant;
      2.26.   ‘recalibration’ means a fine tuning of an NG engine in order to provide the same performance (power, fuel consumption) in a different range of natural gas;
      2.27.   ‘Wobbe Index (lower Wl; or upper Wu)’ means the ratio of the corresponding calorific value of a gas per unit volume and the square root of its relative density under the same reference conditions:

      2.28.   ‘λ-shift factor (Sλ)’ means an expression that describes the required flexibility of the engine management system regarding a change of the excess-air ratio λ if the engine is fuelled with a gas composition different from pure methane (see Annex VII for the calculation of Sλ);
      2.29.   ‘defeat device’ means a device which measures, senses or responds to operating variables (e.g. vehicle speed, engine speed, gear used, temperature, intake pressure or any other parameter) for the purpose of activating, modulating, delaying or deactivating the operation of any component or function of the emission control system such that the effectiveness of the emission control system is reduced under conditions encountered during normal vehicle use unless the use of such a device is substantially included in the applied emission certification test procedures.

      2.30.   ‘auxiliary control device’ means a system, function or control strategy installed to an engine or on a vehicle, that is used to protect the engine and/or its ancillary equipment against operating conditions that could result in damage or failure, or is used to facilitate engine starting. An auxiliary control device may also be a strategy or measure that has been satisfactorily demonstrated not to be a defeat device;
      2.31.   ‘irrational emission control strategy’ means any strategy or measure that, when the vehicle is operated under normal conditions of use, reduces the effectiveness of the emission control system to a level below that expected on the applicable emission test procedures.
      2.32.   Symbols and abbreviations

      2.32.1.   Symbols for test parameters

                  Symbol

                  Unit

                  Term

                  AP

                  m2

                  Cross sectional area of the isokinetic sampling probe

                  AT

                  m2

                  Cross sectional area of the exhaust pipe

                  CEE

                  —

                  Ethane efficiency

                  CEM

                  —

                  Methane efficiency

                  C1

                  —

                  Carbon 1 equivalent hydrocarbon

                  conc

                  ppm/vol. %

                  Subscript denoting concentration

                  D0

                  m3/s

                  Intercept of PDP calibration function

                  DF

                  —

                  Dilution factor

                  D

                  —

                  Bessel function constant

                  E

                  —

                  Bessel function constant

                  EZ

                  g/kWh

                  Interpolated NOx emission of the control point

                  fa

                  —

                  Laboratory atmospheric factor

                  fc

                  s-1

                  Bessel filter cut-off frequency

                  FFH

                  —

                  Fuel specific factor for the calculation of wet concentration for dry concentration

                  FS

                  —

                  Stoichiometric factor

                  GAIRW

                  kg/h

                  Intake air mass flow rate on wet basis

                  GAIRD

                  kg/h

                  Intake air mass flow rate on dry basis

                  GDILW

                  kg/h

                  Dilution air mass flow rate on wet basis

                  GEDFW

                  kg/h

                  Equivalent diluted exhaust gas mass flow rate on wet basis

                  GEXHW

                  kg/h

                  Exhaust gas mass flow rate on wet basis

                  GFUEL

                  kg/h

                  Fuel mass flow rate

                  GTOTW

                  kg/h

                  Diluted exhaust gas mass flow rate on wet basis

                  H

                  MJ/m3

                  Calorific value

                  HREF

                  g/kg

                  Reference value of absolute humidity (10,71g/kg)

                  Ha

                  g/kg

                  Absolute humidity of the intake air

                  Hd

                  g/kg

                  Absolute humidity of the dilution air

                  HTCRAT

                  mol/mol

                  Hydrogen-to-Carbon ratio

                  i

                  —

                  Subscript denoting an individual mode

                  K

                  —

                  Bessel constant

                  k

                  m-1

                  Light absorption coefficient

                  KH,D

                  —

                  Humidity correction factor for NOx for diesel engines

                  KH,G

                  —

                  Humidity correction factor for NOx for gas engines

                  KV

                  CFV calibration function

                  KW,a

                  —

                  Dry to wet correction factor for the intake air

                  KW,d

                  —

                  Dry to wet correction factor for the dilution air

                  KW,e

                  —

                  Dry to wet correction factor for the diluted exhaust gas

                  KW,r

                  —

                  Dry to wet correction factor for the raw exhaust gas

                  L

                  %

                  Percent torque related to the maximum torque for the test engine

                  La

                  m

                  Effective optical path length

                  m

                  Slope of PDP calibration function

                  mass

                  g/h or g

                  Subscript denoting emissions mass flow (rate)

                  MDIL

                  kg

                  Mass of the dilution air sample passed through the particulate sampling filters

                  Md

                  mg

                  Particulate sample mass of the dilution air collected

                  Mf

                  mg

                  Particulate sample mass collected

                  Mf,p

                  mg

                  Particulate sample mass collected on primary filter

                  Mf,b

                  mg

                  Particulate sample mass collected on back-up filter

                  MSAM

                  Mass of the diluted exhaust sample passed through the particulate sampling filters

                  MSEC

                  kg

                  Mass of secondary dilution air

                  MTOTW

                  kg

                  Total CVS mass over the cycle on wet basis

                  MTOTW,i

                  kg

                  Instantaneous CVS mass on wet basis

                  N

                  %

                  Opacity

                  NP

                  —

                  Total revolutions of PDP over the cycle

                  NP,i

                  —

                  Revolutions of PDP during a time interval

                  n

                  min-1

                  Engine speed

                  np

                  s-1

                  PDP speed

                  nhi

                  min-1

                  High engine speed

                  nlo

                  min-1

                  Low engine speed

                  nref

                  min-1

                  Reference engine speed for ETC test

                  pa

                  kPa

                  Saturation vapour pressure of the engine intake air

                  pA

                  kPa

                  Absolute pressure

                  pB

                  kPa

                  Total atmospheric pressure

                  pd

                  kPa

                  Saturation vapour pressure of the dilution air

                  ps

                  kPa

                  Dry atmospheric pressure

                  p1

                  kPa

                  Pressure depression at pump inlet

                  P(a)

                  kW

                  Power absorbed by auxiliaries to be fitted for test

                  P(b)

                  kW

                  Power absorbed by auxiliaries to be removed for test

                  P(n)

                  kW

                  Net power non-corrected

                  P(m)

                  kW

                  Power measured on test bed

                  Ω

                  —

                  Bessel constant

                  Qs

                  m3/s

                  CVS volume flow rate

                  q

                  —

                  Dilution ratio

                  r

                  —

                  Ratio of cross sectional areas of isokinetic probe and exhaust pipe

                  Ra

                  %

                  Relative humidity of the intake air

                  Rd

                  %

                  Relative humidity of the dilution air

                  Rf

                  —

                  FID response factor

                  ρ

                  kg/m3

                  Density

                  S

                  kW

                  Dynamometer setting

                  Si

                  m-1

                  Instantaneous smoke value

                  Sλ

                  λ-shift factor

                  T

                  K

                  Absolute temperature

                  Ta

                  K

                  Absolute temperature of the intake air

                  t

                  s

                  Measuring time

                  te

                  s

                  Electrical response time

                  tF

                  s

                  Filter response time for Bessel function

                  tp

                  s

                  Physical response time

                  Δt

                  s

                  Time interval between successive smoke data (= 1/sampling rate)

                  Δti

                  s

                  Time interval for instantaneous CFV flow

                  τ

                  %

                  Smoke transmittance

                  V0

                  m3/rev

                  PDP volume flow rate at actual conditions

                  W

                  —

                  Wobbe index

                  Wact

                  kWh

                  Actual cycle work of ETC

                  Wref

                  kWh

                  Reference cycle work of ETC

                  WF

                  —

                  Weighting factor

                  WFE

                  —

                  Effective weighting factor

                  X0

                  m3/rev

                  Calibration function of PDP volume flow rate

                  Yi

                  m-1

                  1 s Bessel averaged smoke value

            2.32.2.   Symbols for chemical components

                  CH4

                  Methane

                  C2H6

                  Ethane

                  C2H5OH

                  Ethanol

                  C3H8

                  Propane

                  CO

                  Carbon monoxide

                  DOP

                  Di-octylphtalate

                  CO2

                  Carbon dioxide

                  HC

                  Hydrocarbons

                  NMHC

                  Non-methane hydrocarbons

                  NOx

                  Oxides of nitrogen

                  NO

                  Nitric oxide

                  NO2

                  Nitrogen dioxide

                  PT

                  Particulates.

            2.32.3.   Abbreviations

                  CFV

                  Critical flow venturi

                  CLD

                  Chemiluminescent detector

                  ELR

                  European load response test

                  ESC

                  European steady state cycle

                  ETC

                  European transient cycle

                  FID

                  Flame ionisation detector

                  GC

                  Gas chromatograph

                  HCLD

                  Heated chemiluminescent detector

                  HFID

                  Heated flame ionisation detector

                  LPG

                  Liquefied petroleum gas

                  NDIR

                  Non-dispersive infrared analyser

                  NG

                  Natural gas

                  NMC

                  Non-methane cutter

            3.   APPLICATION FOR EC TYPE-APPROVAL
      3.1.   Application for EC type-approval for a type of engine or engine family as a separate technical unit
      3.1.1.   The application for approval of an engine type or engine family with regard to the level of the emission of gaseous and particulate pollutants for diesel engines and with regard to the level of the emission of gaseous pollutants for gas engines shall be submitted by the engine manufacturer or by a duly accredited representative.
      3.1.2.   It shall be accompanied by the undermentioned documents in triplicate and the following particulars:
      3.1.2.1.   A description of the engine type or engine family, if applicable, comprising the particulars referred to in Annex II to this Directive which conform to the requirements of Articles 3 and 4 of Directive 70/156/EEC of 6 February 1970 on the approximation of the laws of the Member States relating to the type-approval of motor vehicles and their trailers (3).
      3.1.3.   An engine conforming to the ‘engine type’ or ‘parent engine’ characteristics described in Annex II shall be submitted to the technical service responsible for conducting the approval tests defined in Section 6.
      3.2.   Application for EC type-approval for a vehicle type in respect of its engine
      3.2.1.   The application for approval of a vehicle with regard to emission of gaseous and particulate pollutants by its diesel engine or engine family and with regard to the level of the emission of gaseous pollutants by its gas engine or engine family shall be submitted by the vehicle manufacturer or a duly accredited representative.
      3.2.2.   It shall be accompanied by the undermentioned documents in triplicate and the following particulars:
      3.2.2.1.   A description of the vehicle type, of the engine-related vehicle parts and of the engine type or engine family, if applicable, comprising the particulars referred to in Annex II, along with the documentation required in application of Article 3 of Directive 70/156/EEC.
      3.3.   Application for EC type-approval for a vehicle type with an approved engine
      3.3.1.   The application for approval of a vehicle with regard to emission of gaseous and particulate pollutants by its approved diesel engine or engine family and with regard to the level of the emission of gaseous pollutants by its approved gas engine or engine family shall be submitted by the vehicle manufacturer or a duly accredited representative.
      3.3.2.   It shall be accompanied by the undermentioned documents in triplicate and the following particulars:
      3.3.2.1.   a description of the vehicle type and of engine-related vehicle parts comprising the particulars referred to in Annex II, as applicable, and a copy of the EC Type-Approval Certificate (Annex VI) for the engine or engine family, if applicable, as a separate technical unit which is installed in the vehicle type, along with the documentation required in application of Article 3 of Directive 70/156/EEC.
      4.   EC TYPE-APPROVAL
      4.1.   Granting of a universal fuel EC type-approval
      A universal fuel EC type-approval is granted subject to the following requirements.
      4.1.1.   In the case of diesel fuel the parent engine meets the requirements of this Directive on the reference fuel specified in Annex IV.
      4.1.2.   In the case of natural gas the parent engine should demonstrate its capability to adapt to any fuel composition that may occur across the market. In the case of natural gas there are generally two types of fuel, high calorific fuel (H-gas) and low calorific fuel (L-gas), but with a significant spread within both ranges; they differ significantly in their energy content expressed by the Wobbe Index and in their λ-shift factor (Sλ). The formulae for the calculation of the Wobbe index and Sλ are given in Sections 2.27 and 2.28. Natural gases with a λ-shift factor between 0,89 and 1,08 (0,89 ≤ Sλ ≤ 1,08) are considered to belong to H-range, while natural gases with a λ-shift factor between 1,08 and 1,19 (1,08 ≤ Sλ ≤ 1,19) are considered to belong to L-range. The composition of the reference fuels reflects the extreme variations of Sλ.
      The parent engine shall meet the requirements of this Directive on the reference fuels GR (fuel 1) and G25 (fuel 2), as specified in Annex IV, without any readjustment to the fuelling between the two tests. However, one adaptation run over one ETC cycle without measurement is permitted after the change of the fuel. Before testing, the parent engine shall be run-in using the procedure given in paragraph 3 of Appendix 2 to Annex III.
      4.1.2.1.   On the manufacturer's request the engine may be tested on a third fuel (fuel 3) if the λ-shift factor (Sλ) lies between 0,89 (i.e. the lower range of GR) and 1,19 (i.e. the upper range of G25) for example when fuel 3 is a market fuel. The results of this test may be used as a basis for the evaluation of the conformity of the production.
      4.1.3.   In the case of an engine fuelled with natural gas which is self-adaptive for the range of H-gases on the one hand and the range of L-gases on the other hand, and which switches between the H-range and the L-range by means of a switch, the parent engine shall be tested on the relevant reference fuel as specified in Annex IV for each range, at each position of the switch. The fuels are GR (fuel 1) and G23 (fuel 3) for the H-range of gases and G25 (fuel 2) and G23 (fuel 3) for the L-range of gases. The parent engine shall meet the requirements of this Directive at both positions of the switch without any readjustment to the fuelling between the two tests at each position of the switch. However, one adaptation run over one ETC cycle without measurement is permitted after the change of the fuel. Before testing the parent engine shall be run-in using the procedure given in paragraph 3 of Appendix 2 to Annex III.
      4.1.3.1.   At the manufacturer's request the engine may be tested on a third fuel instead of G23 (fuel 3) if the λ-shift factor (Sλ) lies between 0,89 (i.e. the lower range of GR) and 1,19 (i.e. the upper range of G25), for example when fuel 3 is a market fuel. The results of this test may be used as a basis for the evaluation of the conformity of the production.
      4.1.4.   In the case of natural gas engines, the ratio of the emission results ‘r’ shall be determined for each pollutant as follows:

      or,

      and,

      4.1.5.   In the case of LPG the parent engine should demonstrate its capability to adapt to any fuel composition that may occur across the market. In the case of LPG there are variations in C3/C4 composition. These variations are reflected in the reference fuels. The parent engine should meet the emission requirements on the reference fuels A and B as specified in Annex IV without any readjustment to the fuelling between the two tests. However, one adaptation run over one ETC cycle without measurement is permitted after the change of the fuel. Before testing, the parent engine shall be run-in using the procedure defined in paragraph 3 of Appendix 2 to Annex III.
      4.1.5.1.   The ratio of emission results ‘r’ shall be determined for each pollutant as follows:

      4.2.   Granting of a fuel range restricted EC type-approval
      Fuel range restricted EC type-approval is granted subject to the following requirements:
      4.2.1.   Exhaust emissions approval of an engine running on natural gas and laid out for operation on either the range of H-gases or on the range of L-gases
      The parent engine shall be tested on the relevant reference fuel, as specified in Annex IV, for the relevant range. The fuels are GR (fuel 1) and G23 (fuel 3) for the H-range of gases and G25 (fuel 2) and G23 (fuel 3) for the L-range of gases. The parent engine shall meet the requirements of this Directive without any readjustment to the fuelling between the two tests. However, one adaptation run over one ETC cycle without measurement is permitted after the change of the fuel. Before testing the parent engine shall be run-in using the procedure defined in paragraph 3 of Appendix 2 to Annex III.
      4.2.1.1.   At the manufacturer's request the engine may be tested on a third fuel instead of G23 (fuel 3) if the λ-shift factor (Sλ) lies between 0,89 (i.e. the lower range of GR) and 1,19 (i.e. the upper range of G25), for example when fuel 3 is a market fuel. The results of this test may be used as a basis for the evaluation of the conformity of the production.
      4.2.1.2.   The ratio of emission results ‘r’ shall be determined for each pollutant as follows:

      or,

      and,

      4.2.1.3.   On delivery to the customer the engine shall bear a label (see paragraph 5.1.5) stating for which range of gases the engine is approved.
      4.2.2.   Exhaust emissions approval of an engine running on natural gas or LPG and laid out for operation on one specific fuel composition
      4.2.2.1.   The parent engine shall meet the emission requirements on the reference fuels GR and G25 in the case of natural gas, or the reference fuels A and B in the case of LPG, as specified in Annex IV. Between the tests fine-tuning of the fuelling system is allowed. This fine-tuning will consist of a recalibration of the fuelling database, without any alteration to either the basic control strategy or the basic structure of the database. If necessary the exchange of parts that are directly related to the amount of fuel flow (such as injector nozzles) is allowed.
      4.2.2.2.   At the manufacturer's request the engine may be tested on the reference fuels GR and G23, or on the reference fuels G25 and G23, in which case the type-approval is only valid for the H-range or the L-range of gases respectively.
      4.2.2.3.   On delivery to the customer the engine shall bear a label (see paragraph 5.1.5) stating for which fuel composition the engine has been calibrated.
      4.3.   Exhaust emissions approval of a member of a family
      4.3.1.   With the exception of the case mentioned in paragraph 4.3.2, the approval of a parent engine shall be extended to all family members without further testing, for any fuel composition within the range for which the parent engine has been approved (in the case of engines described in paragraph 4.2.2) or the same range of fuels (in the case of engines described in either paragraphs 4.1 or 4.2) for which the parent engine has been approved.
      4.3.2.   Secondary test engine
      In case of an application for type-approval of an engine, or a vehicle in respect of its engine, that engine belonging to an engine family, if the technical service determines that, with regard to the selected parent engine the submitted application does not fully represent the engine family defined in Annex I, Appendix 1, an alternative and if necessary an additional reference test engine may be selected by the technical service and tested.
      4.4.   Type-approval certificate
      A certificate conforming to the model specified in Annex VI shall be issued for approval referred to under Sections 3.1, 3.2 and 3.3.
      5.   ENGINE MARKINGS
      5.1.   The engine approved as a technical unit must bear:
      5.1.1.   the trademark or trade name of the manufacturer of the engine;
      5.1.2.   the manufacturer's commercial description;
      5.1.3.   the EC type-approval number preceded by the distinctive letter(s) or number(s) of the country granting EC type-approval (4);
      5.1.4.   in case of an NG engine one of the following markings to be placed after the EC type approval number:

                  —

                  H in case of the engine being approved and calibrated for the H-range of gases;

                  —

                  L in case of the engine being approved and calibrated for the L-range of gases;

                  —

                  HL in case of the engine being approved and calibrated for both the H-range and L-range of gases;

                  —

                  Ht in case of the engine being approved and calibrated for a specific gas composition in the H-range of gases and transformable to another specific gas in the H-range of gases by fine tuning of the engine fuelling;

                  —

                  Lt in case of the engine being approved and calibrated for a specific gas composition in the L-range of gases and transformable to another specific gas in the L-range of gases after fine tuning of the engine fuelling;

                  —

                  HLt in the case of the engine being approved and calibrated for a specific gas composition in either the H-range or the L-range of gases and transformable to another specific gas in either the H-range or the L-range of gases by fine tuning of the engine fuelling.

            5.1.5.   Labels
      In the case of NG and LPG fuelled engines with a fuel range restricted type approval, the following labels are applicable:
      5.1.5.1.   Content
      The following information must be given:
      In the case of paragraph 4.2.1.3, the label shall state
      ‘ONLY FOR USE WITH NATURAL GAS RANGE H’. If applicable, ‘H’ is replaced by ‘L’.
      In the case of paragraph 4.2.2.3, the label shall state
      ‘ONLY FOR USE WITH NATURAL GAS SPECIFICATION …’ or ‘ONLY FOR USE WITH LIQUEFIED PETROLEUM GAS SPECIFICATION …’, as applicable. All the information in the appropriate table(s) in Annex IV shall be given with the individual constituents and limits specified by the engine manufacturer.
      The letters and figures must be at least 4 mm in height.
      Note:
      If lack of space prevents such labelling, a simplified code may be used. In this event, explanatory notes containing all the above information must be easily accessible to any person filling the fuel tank or performing maintenance or repair on the engine and its accessories, as well as to the authorities concerned. The site and content of these explanatory notes will be determined by agreement between the manufacturer and the approval authority.
      5.1.5.2.   Properties
      Labels must be durable for the useful life of the engine. Labels must be clearly legible and their letters and figures must be indelible. Additionally, labels must be attached in such a manner that their fixing is durable for the useful life of the engine, and the labels cannot be removed without destroying or defacing them.
      5.1.5.3.   Placing
      Labels must be secured to an engine part necessary for normal engine operation and not normally requiring replacement during engine life. Additionally, these labels must be located so as to be readily visible to the average person after the engine has been completed with all the auxiliaries necessary for engine operation.
      5.2.   In case of an application for EC type-approval for a vehicle type in respect of its engine, the marking specified in Section 5.1.5 shall also be placed close to fuel filling aperture.
      5.3.   In case of an application for EC type-approval for a vehicle type with an approved engine, the marking specified in Section 5.1.5 shall also be placed close to the fuel filling aperture.
      6.   SPECIFICATIONS AND TESTS
      6.1.   General
      6.1.1.   Emission control equipment

      6.1.1.1.   The components liable to affect the emission of gaseous and particulate pollutants from diesel engines and the emission of gaseous pollutants from gas engines shall be so designed, constructed, assembled and installed as to enable the engine, in normal use, to comply with the provisions of this Directive.
      6.1.2.   Functions of emission control equipment

      6.1.2.1.   The use of a defeat device and/or an irrational emission control strategy is forbidden.
      6.1.2.2.   An auxiliary control device may be installed to an engine, or on a vehicle, provided that the device:

                  —

                  operates only outside the conditions specified in paragraph 6.1.2.4, or

                  —

                  is activated only temporarily under the conditions specified in paragraph 6.1.2.4 for such purposes as engine damage protection, air-handling device protection, smoke management, cold start or warming-up, or

                  —

                  is activated only by on-board signals for purposes such as operational safety and limp-home strategies.

            6.1.2.3.   An engine control device, function, system or measure that operates during the conditions specified in Section 6.1.2.4 and which results in the use of a different or modified engine control strategy to that normally employed during the applicable emission test cycles will be permitted if, in complying with the requirements of Sections 6.1.3 and/or 6.1.4, it is fully demonstrated that the measure does not reduce the effectiveness of the emission control system. In all other cases, such devices shall be considered to be a defeat device.
      6.1.2.4.   For the purposes of point 6.1.2.2, the defined conditions of use under steady state and transient conditions are:

                  —

                  an altitude not exceeding 1 000 metres (or equivalent atmospheric pressure of 90 kPa),

                  —

                  an ambient temperature within the range 283 to 303 K (10 to 30 °C),

                  —

                  engine coolant temperature within the range 343 to 368 K (70 to 95 °C).

            6.1.3.   Special requirements for electronic emission control systems

      6.1.3.1.   Documentation requirements

      The manufacturer shall provide a documentation package that gives access to the basic design of the system and the means by which it controls its output variables, whether that control is direct or indirect.
      The documentation shall be made available in two parts:

                  (a)

                  the formal documentation package, which shall be supplied to the technical service at the time of submission of the type-approval application, shall include a full description of the system. This documentation may be brief, provided that it exhibits evidence that all outputs permitted by a matrix obtained from the range of control of the individual unit inputs have been identified. This information shall be attached to the documentation required in Annex I, Section 3;

                  (b)

                  additional material that shows the parameters that are modified by any auxiliary control device and the boundary conditions under which the device operates. The additional material shall include a description of the fuel system control logic, timing strategies and switch points during all modes of operation.
                  The additional material shall also contain a justification for the use of any auxiliary control device and include additional material and test data to demonstrate the effect on exhaust emissions of any auxiliary control device installed to the engine or on the vehicle.
                  This additional material shall remain strictly confidential and be retained by the manufacturer, but be made open for inspection at the time of type-approval or at any time during the validity of the type-approval.

            6.1.4.   To verify whether any strategy or measure should be considered a defeat device or an irrational emission control strategy according to the definitions given in Sections 2.29 and 2.31, the type-approval authority and/or the technical service may additionally request a NOx screening test using the ETC which may be carried out in combination with either the type-approval test or the procedures for checking the conformity of production.
      6.1.4.1.   As an alternative to the requirements of Appendix 4 to Annex III the emissions of NOx during the ETC screening test may be sampled using the raw exhaust gas and the technical prescriptions of ISO DIS 16183, dated 15 October 2000, shall be followed.
      6.1.4.2.   In verifying whether any strategy or measure should be considered a defeat device or an irrational emission control strategy according to the definitions given in Sections 2.29 and 2.31, an additional margin of 10 %, related to the appropriate NOx limit value, shall be accepted.
      6.1.5.   Transitional provisions for extension of type-approval
      6.1.5.1.   This section shall only be applicable to new compression-ignition engines and new vehicles propelled by a compression-ignition engine that have been type-approved to the requirements of row A of the tables in Section 6.2.1.
      6.1.5.2.   As an alternative to Sections 6.1.3 and 6.1.4, the manufacturer may present to the technical service the results of a NOx screening test using the ETC on the engine conforming to the characteristics of the parent engine described in Annex II, and taking into account the provisions of Sections 6.1.4.1 and 6.1.4.2. The manufacturer shall also provide a written statement that the engine does not employ any defeat device or irrational emission control strategy as defined in Section 2 of this Annex.
      6.1.5.3.   The manufacturer shall also provide a written statement that the results of the NOx screening test and the declaration for the parent engine, as referred to in Section 6.1.4, are also applicable to all engine types within the engine family described in Annex II.
      6.2.   Specifications concerning the emission of gaseous and particulate pollutants and smoke
      For type approval to row A of the tables in Section 6.2.1, the emissions shall be determined on the ESC and ELR tests with conventional diesel engines including those fitted with electronic fuel injection equipment, exhaust gas recirculation (EGR), and/or oxidation catalysts. Diesel engines fitted with advanced exhaust aftertreatment systems including the NOx catalysts and/or particulate traps, shall additionally be tested on the ETC test.
      For type approval testing to either row B1 or B2 or row C of the tables in Section 6.2.1 the emissions shall be determined on the ESC, ELR and ETC tests.
      For gas engines, the gaseous emissions shall be determined on the ETC test.
      The ESC and ELR test procedures are described in Annex III, Appendix 1, the ETC test procedure in Annex III, Appendices 2 and 3.
      The emissions of gaseous pollutants and particulate pollutants, if applicable, and smoke, if applicable, by the engine submitted for testing shall be measured by the methods described in Annex III, Appendix 4. Annex V describes the recommended analytical systems for the gaseous pollutants, the recommended particulate sampling systems, and the recommended smoke measurement system.
      Other systems or analysers may be approved by the Technical Service if it is found that they yield equivalent results on the respective test cycle. The determination of system equivalency shall be based upon a 7 sample pair (or larger) correlation study between the system under consideration and one of the reference systems of this Directive. For particulate emissions only the full flow dilution system is recognised as the reference system. ‘Results’ refer to the specific cycle emissions value. The correlation testing shall be performed at the same laboratory, test cell, and on the same engine, and is preferred to be run concurrently. The equivalency criterion is defined as a ± 5 % agreement of the sample pair averages. For introduction of a new system into the Directive the determination of equivalency shall be based upon the calculation of repeatability and reproducibility, as described in ISO 5725.
      6.2.1.   Limit values
      The specific mass of the carbon monoxide, of the total hydrocarbons, of the oxides of nitrogen and of the particulates, as determined on the ESC test, and of the smoke opacity, as determined on the ELR test, shall not exceed the amounts shown in Table 1.
      Table 1
      Limit values — ESC and ELR tests

                  Row

                  Mass of carbon monoxide
                  (CO) g/kWh

                  Mass of hydrocarbons
                  (HC) g/kWh

                  Mass of nitrogen oxides
                  (NOx) g/kWh

                  Mass of particulates
                  (PT) g/kWh

                  Smoke
                  m–1

                  A (2000)

                  2,1

                  0,66

                  5,0

                  0,10

                  0,13 (5)

                  0,8

                  B1 (2005)

                  1,5

                  0,46

                  3,5

                  0,02

                  0,5

                  B2 (2008)

                  1,5

                  0,46

                  2,0

                  0,02

                  0,5

                  C (EEV)

                  1,5

                  0,25

                  2,0

                  0,02

                  0,15

            For diesel engines that are additionally tested on the ETC test, and specifically for gas engines, the specific masses of the carbon monoxide, of the non-methane hydrocarbons, of the methane (where applicable), of the oxides of nitrogen and of the particulates (where applicable) shall not exceed the amounts shown in Table 2.
      Table 2
      Limit values — ETC tests

                  Row

                  Mass of carbon monoxide
                  (CO) g/kWh

                  Mass of non-methane hydrocarbons
                  (NMHC) g/kWh

                  Mass of methane
                  (CH4) (6) g/kWh

                  Mass of nitrogen oxides
                  (NOx) g/kWh

                  Mass of particulates
                  (PT) (7) g/kWh

                  A (2000)

                  5,45

                  0,78

                  1,6

                  5,0

                  0,16

                  0,21 (8)

                  B1 (2005)

                  4,0

                  0,55

                  1,1

                  3,5

                  0,03

                  B2 (2008)

                  4,0

                  0,55

                  1,1

                  2,0

                  0,03

                  C (EEV)

                  3,0

                  0,40

                  0,65

                  2,0

                  0,02

            6.2.2.   Hydrocarbon measurement for diesel and gas fuelled engines
      6.2.2.1.   A manufacturer may choose to measure the mass of total hydrocarbons (THC) on the ETC test instead of measuring the mass of non-methane hydrocarbons. In this case, the limit for the mass of total hydrocarbons is the same as shown in Table 2 for the mass of non-methane hydrocarbons.
      6.2.3.   Specific requirements for diesel engines
      6.2.3.1.   The specific mass of the oxides of nitrogen measured at the random check points within the control area of the ESC test must not exceed by more than 10 per cent the values interpolated from the adjacent test modes (reference Annex III, Appendix 1, Sections 4.6.2 and 4.6.3).
      6.2.3.2.   The smoke value on the random test speed of the ELR must not exceed the highest smoke value of the two adjacent test speeds by more than 20 per cent, or by more than 5 per cent of the limit value, whichever is greater.
      7.   INSTALLATION ON THE VEHICLE
      7.1.   The engine installation on the vehicle shall comply with the following characteristics in respect to the type-approval of the engine:
      7.1.1.   intake depression shall not exceed that specified for the type-approved engine in Annex VI;
      7.1.2.   exhaust back pressure shall not exceed that specified for the type-approved engine in Annex VI;
      7.1.3.   the exhaust system volume shall not differ by more than 40 % of that specified for the type-approved engine in Annex VI;
      7.1.4.   power absorbed by the auxiliaries needed for operating the engine shall not exceed that specified for the type-approved engine in Annex VI.
      8.   ENGINE FAMILY
      8.1.   Parameters defining the engine family
      The engine family, as determined by the engine manufacturer, may be defined by basic characteristics which must be common to engines within the family. In some cases there may be interaction of parameters. These effects must also be taken into consideration to ensure that only engines with similar exhaust emission characteristics are included within an engine family.
      In order that engines may be considered to belong to the same engine family, the following list of basic parameters must be common:
      8.1.1.   Combustion cycle:

                  —

                  2 cycle

                  —

                  4 cycle

            8.1.2.   Cooling medium:

                  —

                  air

                  —

                  water

                  —

                  oil

            8.1.3.   For gas engines and engines with aftertreatment:

                  —

                  number of cylinders

            (other diesel engines with fewer cylinders than the parent engine may be considered to belong to the same engine family provided the fuelling system meters fuel for each individual cylinder)
      8.1.4.   Individual cylinder displacement:

                  —

                  engines to be within a total spread of 15 %

            8.1.5.   Method of air aspiration:

                  —

                  naturally aspirated

                  —

                  pressure charged

                  —

                  pressure charged with charge air cooler

            8.1.6.   Combustion chamber type/design:

                  —

                  pre-chamber

                  —

                  swirl chamber

                  —

                  open chamber

            8.1.7.   Valve and porting — configuration, size and number:

                  —

                  cylinder head

                  —

                  cylinder wall

                  —

                  crankcase

            8.1.8.   Fuel injection system (diesel engines):

                  —

                  pump-line-injector

                  —

                  in-line pump

                  —

                  distributor pump

                  —

                  single element

                  —

                  unit injector

            8.1.9.   Fuelling system (gas engines):

                  —

                  mixing unit

                  —

                  gas induction/injection (single point, multi-point)

                  —

                  liquid injection (single point, multi-point)

            8.1.10.   Ignition system (gas engines)
      8.1.11.   Miscellaneous features:

                  —

                  exhaust gas recirculation

                  —

                  water injection/emulsion

                  —

                  secondary air injection

                  —

                  charge cooling system

            8.1.12.   Exhaust aftertreatment:

                  —

                  3-way-catalyst

                  —

                  oxidation catalyst

                  —

                  reduction catalyst

                  —

                  thermal reactor

                  —

                  particulate trap

            8.2.   Choice of the parent engine
      8.2.1.   Diesel engines
      The parent engine of the family shall be selected using the primary criteria of the highest fuel delivery per stroke at the declared maximum torque speed. In the event that two or more engines share this primary criteria, the parent engine shall be selected using the secondary criteria of highest fuel delivery per stroke at rated speed. Under certain circumstances, the approval authority may conclude that the worst case emission rate of the family can best be characterised by testing a second engine. Thus, the approval authority may select an additional engine for test based upon features which indicate that it may have the highest emission level of the engines within that family.
      If engines within the family incorporate other variable features which could be considered to affect exhaust emissions, these features shall also be identified and taken into account in the selection of the parent engine.
      8.2.2.   Gas engines
      The parent engine of the family shall be selected using the primary criteria of the largest displacement. In the event that two or more engines share this primary criteria, the parent engine shall be selected using the secondary criteria in the following order:

                  —

                  the highest fuel delivery per stroke at the speed of declared rated power;

                  —

                  the most advanced spark timing;

                  —

                  the lowest EGR rate;

                  —

                  no air pump or lowest actual air flow pump.

            Under certain circumstances, the approval authority may conclude that the worst case emission rate of the family can best be characterised by testing a second engine. Thus, the approval authority may select an additional engine for test based upon features which indicate that it may have the highest emission level of the engines within that family.
      9.   PRODUCTION CONFORMITY
      9.1.   Measures to ensure production conformity must be taken in accordance with the provisions of Article 10 of Directive 70/156/EEC. Production conformity is checked on the basis of the description in the type-approval certificates set out in Annex VI to this Directive.
      Sections 2.4.2 and 2.4.3 of Annex X to Directive 70/156/EEC are applicable where the competent authorities are not satisfied with the auditing procedure of the manufacturer.
      9.1.1.   If emissions of pollutants are to be measured and an engine type-approval has had one or several extensions, the tests will be carried out on the engine(s) described in the information package relating to the relevant extension.
      9.1.1.1.   Conformity of the engine subjected to a pollutant test:
      After submission of the engine to the authorities, the manufacturer shall not carry out any adjustment to the engines selected.
      9.1.1.1.1.   Three engines are randomly taken in the series. Engines that are subject to testing only on the ESC and ELR tests or only on the ETC test for type approval to row A of the tables in Section 6.2.1 are subject to those applicable tests for the checking of production conformity. With the agreement of the authority, all other engines type approved to row A, B1 or B2, or C of the tables in Section 6.2.1 are subjected to testing either on the ESC and ELR cycles or on the ETC cycle for the checking of the production conformity. The limit values are given in Section 6.2.1 of this Annex.
      9.1.1.1.2.   The tests are carried out according to Appendix 1 to this Annex, where the competent authority is satisfied with the production standard deviation given by the manufacturer, in accordance with Annex X to Directive 70/156/EEC, which applies to motor vehicles and their trailers.
      The tests are carried out according to Appendix 2 to this Annex, where the competent authority is not satisfied with the production standard deviation given by the manufacturer, in accordance with Annex X to Directive 70/156/EEC, which applies to motor vehicles and their trailers.
      At the manufacturer's request, the tests may be carried out in accordance with Appendix 3 to this Annex.
      9.1.1.1.3.   On the basis of a test of the engine by sampling, the production of a series is regarded as conforming where a pass decision is reached for all the pollutants and non-conforming where a fail decision is reached for one pollutant, in accordance with the test criteria applied in the appropriate Appendix.
      When a pass decision has been reached for one pollutant, this decision may not be changed by any additional tests made in order to reach a decision for the other pollutants.
      If no pass decision is reached for all the pollutants and if no fail decision is reached for one pollutant, a test is carried out on another engine (see Figure 2).
      If no decision is reached, the manufacturer may at any time decide to stop testing. In that case a fail decision is recorded.
      9.1.1.2.   The tests will be carried out on newly manufactured engines. Gas fuelled engines shall be run-in using the procedure defined in paragraph 3 of Appendix 2 to Annex III.
      9.1.1.2.1.   However, at the request of the manufacturer, the tests may be carried out on diesel or gas engines which have been run-in more than the period referred to in Section 9.1.1.2, up to a maximum of 100 hours. In this case, the running-in procedure will be conducted by the manufacturer who shall undertake not to make any adjustments to those engines.
      9.1.1.2.2.   When the manufacturer asks to conduct a running-in procedure in accordance with Section 9.1.1.2.1, it may be carried out on:

                  —

                  all the engines that are tested, or

                  —

                  the first engine tested, with the determination of an evolution coefficient as follows:

                  —

                  the pollutant emissions will be measured at zero and at ‘x’ hours on the first engine tested,

                  —

               the evolution coefficient of the emissions between zero and ‘x’ hours will be calculated for each pollutant:emissions ‘x’ hours/emissions zero hours
                  It may be less than one.

            The subsequent test engines will not be subjected to the running-in procedure, but their zero hour emissions will be modified by the evolution coefficient.
      In this case, the values to be taken will be:

                  —

                  the values at ‘x’ hours for the first engine,

                  —

                  the values at zero hour multiplied by the evolution coefficient for the other engines.

            9.1.1.2.3.   For diesel and LPG fuelled engines, all these tests may be conducted with commercial fuel. However, at the manufacturer's request, the reference fuels described in Annex IV may be used. This implies tests, as described in Section 4 of this Annex, with at least two of the reference fuels for each gas engine.
      9.1.1.2.4.   For NG fuelled engines, all these tests may be conducted with commercial fuel in the following way:

                  —

                  for H marked engines with a commercial fuel within the H-range (0,89 ≤ Sλ ≤ 1,00),

                  —

                  for L marked engines with a commercial fuel within the L-range (1,00 ≤ Sλ ≤ 1,19),

                  —

                  for HL marked engines with a commercial fuel within the extreme range of the λ-shift factor (0,89 ≤ Sλ ≤ 1,19).

            However, at the manufacturer's request, the reference fuels described in Annex IV may be used. This implies tests, as described in Section 4 of this Annex.
      9.1.1.2.5.   In the case of dispute caused by the non-compliance of gas fuelled engines when using a commercial fuel, the tests shall be performed with a reference fuel on which the parent engine has been tested, or with the possible additional fuel 3 as referred to in paragraphs 4.1.3.1 and 4.2.1.1 on which the parent engine may have been tested. Then, the result has to be converted by a calculation applying the relevant factor(s) ‘r’, ‘ra’ or ‘rb’ as described in paragraphs 4.1.4, 4.1.5.1 and 4.2.1.2. If r, ra or rb are less than 1 no correction shall take place. The measured results and the calculated results must demonstrate that the engine meets the limit values with all relevant fuels (fuels 1, 2 and, if applicable, fuel 3 in the case of natural gas engines and fuels A and B in the case of LPG engines).
      9.1.1.2.6.   Tests for conformity of production of a gas fuelled engine laid out for operation on one specific fuel composition shall be performed on the fuel for which the engine has been calibrated.

         (1)  OJ L 76, 6.4.1970, p. 1. Directive as last amended by Commission Directive 2003/76/EC (OJ L 206, 15.8.2003, p. 29).

         (2)  OJ L 375, 31.12.1980, p. 46. Directive as last amended by Commission Directive 1999/99/EC (OJ L 334, 28.12.1999, p. 32).

         (3)  OJ L 42, 23.2.1970, p. 1. Directive as last amended by Commission Directive 2004/104/EC (OJ L 337, 13.11.2004, p. 13).

         (4)  1 = Germany, 2 = France, 3 = Italy, 4 = Netherlands, 5 = Sweden, 6 = Belgium, 7 = Hungary, 8 = Czech Republic, 9 = Spain, 11 = United Kingdom, 12 = Austria, 13 = Luxembourg, 17 = Finland, 18 = Denmark, 20 = Poland, 21 = Portugal, 23 = Greece, 24 = Ireland, 26 = Slovenia, 27 = Slovakia, 29 = Estonia, 32 = Latvia, 36 = Lithuania, 49 = Cyprus, 50 = Malta.

         (5)  For engines having a swept volume of less than 0,75 dm3 per cylinder and a rated power speed of more than 3 000 min -1.

         (6)  For NG engines only.

         (7)  Not applicable for gas fuelled engines at stage A and stages B1 and B2.

         (8)  For engines having a swept volume of less than 0,75 dm3 per cylinder and a rated power speed of more than 3 000 min-1.

         Appendix 1
         PROCEDURE FOR PRODUCTION CONFORMITY TESTING WHEN STANDARD DEVIATION IS SATISFACTORY

                     1.

                     This Appendix describes the procedure to be used to verify production conformity for the emissions of pollutants when the manufacturer's production standard deviation is satisfactory.

                     2.

                     With a minimum sample size of three engines the sampling procedure is set so that the probability of a lot passing a test with 40 % of the engines defective is 0,95 (producer's risk = 5 %) while the probability of a lot being accepted with 65 % of the engines defective is 0,10 (consumer's risk = 10 %).

                     3.

                     The following procedure is used for each of the pollutants given in Section 6.2.1 of Annex I (see Figure 2):

                                 Let:

                                             L

                                             =

                                             the natural logarithm of the limit value for the pollutant;

                                             χi

                                             =

                                             the natural logarithm of the measurement for the i-th engine of the sample;

                                             s

                                             =

                                             an estimate of the production standard deviation (after taking the natural logarithm of the measurements);

                                             n

                                             =

                                             the current sample number.

                     4.

                     For each sample the sum of the standardised deviations to the limit is calculated using the following formula:

                     5.

                     Then:

                                 —

                                 if the test statistic result is greater than the pass decision number for the sample size given in Table 3, a pass decision is reached for the pollutant;

                                 —

                                 if the test statistic result is less than the fail decision number for the sample size given in Table 3, a fail decision is reached for the pollutant;

                                 —

                                 otherwise, an additional engine is tested according to Section 9.1.1.1 of Annex I and the calculation procedure is applied to the sample increased by one more unit.

               Table 3
         Pass and fail decision numbers of Appendix 1 sampling plan
         Minimum sample size: 3

                     Cumulative number of engines tested (sample size)

                     Pass decision number An

                     Fail decision number Bn

                     3

                     3,327

                     – 4,724

                     4

                     3,261

                     – 4,790

                     5

                     3,195

                     – 4,856

                     6

                     3,129

                     – 4,922

                     7

                     3,063

                     – 4,988

                     8

                     2,997

                     – 5,054

                     9

                     2,931

                     – 5,120

                     10

                     2,865

                     – 5,185

                     11

                     2,799

                     – 5,251

                     12

                     2,733

                     – 5,317

                     13

                     2,667

                     – 5,383

                     14

                     2,601

                     – 5,449

                     15

                     2,535

                     – 5,515

                     16

                     2,469

                     – 5,581

                     17

                     2,403

                     – 5,647

                     18

                     2,337

                     – 5,713

                     19

                     2,271

                     – 5,779

                     20

                     2,205

                     – 5,845

                     21

                     2,139

                     – 5,911

                     22

                     2,073

                     – 5,977

                     23

                     2,007

                     – 6,043

                     24

                     1,941

                     – 6,109

                     25

                     1,875

                     – 6,175

                     26

                     1,809

                     – 6,241

                     27

                     1,743

                     – 6,307

                     28

                     1,677

                     – 6,373

                     29

                     1,611

                     – 6,439

                     30

                     1,545

                     – 6,505

                     31

                     1,479

                     – 6,571

                     32

                     – 2,112

                     – 2,112

         Appendix 2
         PROCEDURE FOR PRODUCTION CONFORMITY TESTING WHEN STANDARD DEVIATION IS UNSATISFACTORY OR UNAVAILABLE

                     1.

                     This Appendix describes the procedure to be used to verify production conformity for the emissions of pollutants when the manufacturer's production standard deviation is either unsatisfactory or unavailable.

                     2.

                     With a minimum sample size of three engines the sampling procedure is set so that the probability of a lot passing a test with 40 % of the engines defective is 0,95 (producer's risk = 5 %) while the probability of a lot being accepted with 65 % of the engines defective is 0,10 (consumer's risk = 10 %).

                     3.

                     The values of the pollutants given in Section 6.2.1 of Annex I are considered to be log normally distributed and should be transformed by taking their natural logarithms. Let m0 and m denote the minimum and maximum sample size respectively (m0 = 3 and m = 32) and let n denote the current sample number.

                     4.

                     If the natural logarithms of the values measured in the series are χ1, χ2, … χi and L is the natural logarithm of the limit value for the pollutant, then, define
                     and

                     5.

                  Table 4 shows values of the pass (An) and fail (Bn) decision numbers against current sample number. The test statistic result is the ratio:
                         and shall be used to determine whether the series has passed or failed as follows:for m0 ≤ n < m:

                                 —

                                 pass the series if ,

                                 —

                                 fail the series if ,

                                 —

                                 take another measurement if .

                     6.

                     Remarks
                     The following recursive formulae are useful for calculating successive values of the test statistic:

               Table 4
         Pass and fail decision numbers of Appendix 2 sampling plan
         Minimum sample size: 3

                     Cumulative number of engines tested (sample size)

                     Pass decision number An

                     Fail decision number Bn

                     3

                     - 0,80381

                     16,64743

                     4

                     - 0,76339

                     7,68627

                     5

                     - 0,72982

                     4,67136

                     6

                     - 0,69962

                     3,25573

                     7

                     - 0,67129

                     2,45431

                     8

                     - 0,64406

                     1,94369

                     9

                     - 0,61750

                     1,59105

                     10

                     - 0,59135

                     1,33295

                     11

                     - 0,56542

                     1,13566

                     12

                     - 0,53960

                     0,97970

                     13

                     - 0,51379

                     0,85307

                     14

                     - 0,48791

                     0,74801

                     15

                     - 0,46191

                     0,65928

                     16

                     - 0,43573

                     0,58321

                     17

                     - 0,40933

                     0,51718

                     18

                     - 0,38266

                     0,45922

                     19

                     - 0,35570

                     0,40788

                     20

                     - 0,32840

                     0,36203

                     21

                     - 0,30072

                     0,32078

                     22

                     - 0,27263

                     0,28343

                     23

                     - 0,24410

                     0,24943

                     24

                     - 0,21509

                     0,21831

                     25

                     - 0,18557

                     0,18970

                     26

                     - 0,15550

                     0,16328

                     27

                     - 0,12483

                     0,13880

                     28

                     - 0,09354

                     0,11603

                     29

                     - 0,06159

                     0,09480

                     30

                     - 0,02892

                     0,07493

                     31

                     - 0,00449

                     0,05629

                     32

                     - 0,03876

                     0,03876

         Appendix 3
         PROCEDURE FOR PRODUCTION CONFORMITY TESTING AT MANUFACTURER'S REQUEST

                     1.

                     This Appendix describes the procedure to be used to verify, at the manufacturer's request, production conformity for the emissions of pollutants.

                     2.

                     With a minimum sample size of three engines the sampling procedure is set so that the probability of a lot passing a test with 30 % of the engines defective is 0,90 (producer's risk = 10 %) while the probability of a lot being accepted with 65 % of the engines defective is 0,10 (consumer's risk = 10 %).

                     3.

                     The following procedure is used for each of the pollutants given in Section 6.2.1 of Annex I (see Figure 2):

                                 Let:

                                             L

                                             =

                                             the limit value for the pollutant,

                                             xi

                                             =

                                             the value of the measurement for the i-th engine of the sample,

                                             n

                                             =

                                             the current sample number.

                     4.

                     Calculate for the sample the test statistic quantifying the number of non-conforming engines, i.e. xi ≥ L.

                     5.

                     Then:

                                 —

                                 if the test statistic is less than or equal to the pass decision number for the sample size given in Table 5, a pass decision is reached for the pollutant;

                                 —

                                 if the test statistic is greater than or equal to the fail decision number for the sample size given in Table 5, a fail decision is reached for the pollutant;

                                 —

                                 otherwise, an additional engine is tested according to Section 9.1.1.1 of Annex I and the calculation procedure is applied to the sample increased by one more unit.

                           In Table 5 the pass and fail decision numbers are calculated by means of the International Standard ISO 8422/1991.

               Table 5
         Pass and fail decision numbers of Appendix 3 sampling plan
         Minimum sample size: 3

                     Cumulative number of engines tested (sample size)

                     Pass decision number

                     Fail decision number

                     3

                     —

                     3

                     4

                     0

                     4

                     5

                     0

                     4

                     6

                     1

                     5

                     7

                     1

                     5

                     8

                     2

                     6

                     9

                     2

                     6

                     10

                     3

                     7

                     11

                     3

                     7

                     12

                     4

                     8

                     13

                     4

                     8

                     14

                     5

                     9

                     15

                     5

                     9

                     16

                     6

                     10

                     17

                     6

                     10

                     18

                     7

                     11

                     19

                     8

                     9

      ANNEX II

         (1)  Delete as appropriate.

         Appendix 1

            (1)  In the case of non-conventional engines and systems, particulars equivalent to those referred to here shall be supplied by the manufacturer.

            (2)  Strike out what does not apply.

            (3)  Specify the tolerance.

            (4)  Strike out what does not apply.

            (5)  OJ L 375, 31.12.1980, p. 46. Directive as last amended by Commission Directive 1999/99/EC (OJ L 334, 28.12.1999, p. 32).

            (6)  Strike out what does not apply.

            (7)  Specify the tolerance.

            (8)  Strike out what does not apply.

            (9)  Specify the tolerance.

            (10)  In the case of systems laid-out in a different manner, supply equivalent information (for paragraph 3.2).

            (11)  Directive 1999/96/EC of the European Parliament and of the Council of 13 December 1999 on the approximation of the laws of the Member States relating to measures to be taken against the emission of gaseous and particulate pollutants from compression ignition engines for use in vehicles, and the emission of gaseous pollutants from positive ignition engines fuelled with natural gas or liquefied petroleum gas for use in vehicles (OJ L 44, 16.2.2000, p. 1).

            (12)  Strike out what does not apply.

            (13)  Specify the tolerance.

            (14)  Strike out what does not apply.

            (15)  Specify the tolerance.

            (16)  ESC test.

            (17)  ETC test only.

            (18)  Specify the tolerance; to be within ± 3 % of the values declared by the manufacturer.

            (19)  ESC test.

            (20)  ETC test only.

         Appendix 2
         ESSENTIAL CHARACTERISTICS OF THE ENGINE FAMILY

            (1)  If not applicable, mark n.a.

         Appendix 3

            (1)  To be submitted for each engine of the family.

            (2)  Strike out what does not apply.

            (3)  Specify the tolerance.

            (4)  Strike out what does not apply.

            (5)  Strike out what does not apply.

            (6)  Specify the tolerance.

            (7)  In the case of systems laid-out in a different manner, supply equivalent information (for paragraph 3.2).

            (8)  Strike out what does not apply.

            (9)  Specify the tolerance.

            (10)  Strike out what does not apply.

            (11)  Specify the tolerance.

            (12)  Strike out what does not apply.

            (13)  Specify the tolerance.

         Appendix 4
         CHARACTERISTICS OF THE ENGINE-RELATED VEHICLE PARTS

            (1)  ESC test.

            (2)  ETC test only.

      ANNEX III
      TEST PROCEDURE
      1.   INTRODUCTION

                  1.1.

                  This Annex describes the methods of determining emissions of gaseous components, particulates and smoke from the engines to be tested. Three test cycles are described that shall be applied according to the provisions of Annex I, Section 6.2:

                              —

                              the ESC which consists of a steady state 13-mode cycle,

                              —

                              the ELR which consists of transient load steps at different speeds, which are integral parts of one test procedure, and are run concurrently,

                              —

                              the ETC which consists of a second-by-second sequence of transient modes.

                  1.2.

                  The test shall be carried out with the engine mounted on a test bench and connected to a dynamometer.

            1.3.   Measurement principle
      The emissions to be measured from the exhaust of the engine include the gaseous components (carbon monoxide, total hydrocarbons for diesel engines on the ESC test only; non-methane hydrocarbons for diesel and gas engines on the ETC test only; methane for gas engines on the ETC test only and oxides of nitrogen), the particulates (diesel engines only) and smoke (diesel engines on the ELR test only). Additionally, carbon dioxide is often used as a tracer gas for determining the dilution ratio of partial and full flow dilution systems. Good engineering practice recommends the general measurement of carbon dioxide as an excellent tool for the detection of measurement problems during the test run.
      1.3.1.   ESC test
      During a prescribed sequence of warmed-up engine operating conditions the amounts of the above exhaust emissions shall be examined continuously by taking a sample from the raw exhaust gas. The test cycle consists of a number of speed and power modes which cover the typical operating range of diesel engines. During each mode the concentration of each gaseous pollutant, exhaust flow and power output shall be determined, and the measured values weighted. The particulate sample shall be diluted with conditioned ambient air. One sample over the complete test procedure shall be taken, and collected on suitable filters. The grams of each pollutant emitted per kilowatt hour shall be calculated as described in Appendix 1 to this Annex. Additionally, NOx shall be measured at three test points within the control area selected by the Technical Service (1) and the measured values compared to the values calculated from those modes of the test cycle enveloping the selected test points. The NOx control check ensures the effectiveness of the emission control of the engine within the typical engine operating range.
      1.3.2.   ELR test
      During a prescribed load response test, the smoke of a warmed-up engine shall be determined by means of an opacimeter. The test consists of loading the engine at constant speed from 10 % to 100 % load at three different engine speeds. Additionally, a fourth load step selected by the Technical Service (1) shall be run, and the value compared to the values of the previous load steps. The smoke peak shall be determined using an averaging algorithm, as described in Appendix 1 to this Annex.
      1.3.3.   ETC test
      During a prescribed transient cycle of warmed-up engine operating conditions, which is based closely on road-type-specific driving patterns of heavy-duty engines installed in trucks and buses, the above pollutants shall be examined after diluting the total exhaust gas with conditioned ambient air. Using the engine torque and speed feedback signals of the engine dynamometer, the power shall be integrated with respect to time of the cycle resulting in the work produced by the engine over the cycle. The concentration of NOx and HC shall be determined over the cycle by integration of the analyser signal. The concentration of CO, CO2, and NMHC may be determined by integration of the analyser signal or by bag sampling. For particulates, a proportional sample shall be collected on suitable filters. The diluted exhaust gas flow rate shall be determined over the cycle to calculate the mass emission values of the pollutants. The mass emission values shall be related to the engine work to get the grams of each pollutant emitted per kilowatt hour, as described in Appendix 2 to this Annex.
      2.   TEST CONDITIONS
      2.1.   Engine test conditions

                  2.1.1.

                  The absolute temperature (Ta) of the engine air at the inlet to the engine expressed in Kelvin, and the dry atmospheric pressure (ps), expressed in kPa shall be measured and the parameter F shall be determined according to the following provisions:

                              (a)

                              for diesel engines:

                                          Naturally aspirated and mechanically supercharged engines:

                                          Turbocharged engines with or without cooling of the intake air:

                              (b)

                              for gas engines:

            2.1.2.   Test validity
      For a test to be recognised as valid, the parameter F shall be such that:

      2.2.   Engines with charge air cooling
      The charge air temperature shall be recorded and shall be, at the speed of the declared maximum power and full load, within ± 5 K of the maximum charge air temperature specified in Annex II, Appendix 1, Section 1.16.3. The temperature of the cooling medium shall be at least 293 K (20 °C).
      If a test shop system or external blower is used, the charge air temperature shall be within ± 5 K of the maximum charge air temperature specified in Annex II, Appendix 1, Section 1.16.3 at the speed of the declared maximum power and full load. The setting of the charge air cooler for meeting the above conditions shall be used for the whole test cycle.
      2.3.   Engine air intake system
      An engine air intake system shall be used presenting an air intake restriction within ± 100 Pa of the upper limit of the engine operating at the speed at the declared maximum power and full load.
      2.4.   Engine exhaust system
      An exhaust system shall be used presenting an exhaust back pressure within ± 1 000 Pa of the upper limit of the engine operating at the speed of declared maximum power and full load and a volume within ± 40 % of that specified by the manufacturer. A test shop system may be used, provided it represents actual engine operating conditions. The exhaust system shall conform to the requirements for exhaust gas sampling, as set out in Annex III, Appendix 4, Section 3.4 and in Annex V, Section 2.2.1, EP and Section 2.3.1, EP.
      If the engine is equipped with an exhaust aftertreatment device, the exhaust pipe must have the same diameter as found in-use for at least 4 pipe diameters upstream to the inlet of the beginning of the expansion section containing the aftertreatment device. The distance from the exhaust manifold flange or turbocharger outlet to the exhaust aftertreatment device shall be the same as in the vehicle configuration or within the distance specifications of the manufacturer. The exhaust backpressure or restriction shall follow the same criteria as above, and may be set with a valve. The aftertreatment container may be removed during dummy tests and during engine mapping, and replaced with an equivalent container having an inactive catalyst support.
      2.5.   Cooling system
      An engine cooling system with sufficient capacity to maintain the engine at normal operating temperatures prescribed by the manufacturer shall be used.
      2.6.   Lubricating oil
      Specifications of the lubricating oil used for the test shall be recorded and presented with the results of the test, as specified in Annex II, Appendix 1, Section 7.1.
      2.7.   Fuel
      The fuel shall be the reference fuel specified in Annex IV.
      The fuel temperature and measuring point shall be specified by the manufacturer within the limits given in Annex II, Appendix 1, Section 1.16.5. The fuel temperature shall not be lower than 306 K (33 °C). If not specified, it shall be 311 K ± 5 K (38 °C ± 5 °C) at the inlet to the fuel supply.
      For NG and LPG fuelled engines, the fuel temperature and measuring point shall be within the limits given in Annex II, Appendix 1, Section 1.16.5 or in Annex II, Appendix 3, Section 1.16.5 in cases where the engine is not a parent engine.
      2.8.   Testing of exhaust aftertreatment systems
      If the engine is equipped with an exhaust aftertreatment system, the emissions measured on the test cycle(s) shall be representative of the emissions in the field. If this cannot be achieved with one single test cycle (e.g. for particulate filters with periodic regeneration), several test cycles shall be conducted and the test results averaged and/or weighted. The exact procedure shall be agreed by the engine manufacturer and the Technical Service based upon good engineering judgement.

         (1)  The test points shall be selected using approved statistical methods of randomisation.

         Appendix 1
         ESC AND ELR TEST CYCLES
         1.   ENGINE AND DYNAMOMETER SETTINGS
         1.1.   Determination of engine speeds A, B and C
         The engine speeds A, B and C shall be declared by the manufacturer in accordance with the following provisions:
         The high speed nhi shall be determined by calculating 70 % of the declared maximum net power P(n), as determined in Annex II, Appendix 1, Section 8.2. The highest engine speed where this power value occurs on the power curve is defined as nhi.
         The low speed nlo shall be determined by calculating 50 % of the declared maximum net power P(n), as determined in Annex II, Appendix 1, Section 8.2. The lowest engine speed where this power value occurs on the power curve is defined as nlo.
         The engine speeds A, B and C shall be calculated as follows:

         The engine speeds A, B and C may be verified by either of the following methods:

                     (a)

                     additional test points shall be measured during engine power approval according to Directive 80/1269/EEC for an accurate determination of nhi and nlo. The maximum power, nhi and nlo shall be determined from the power curve, and engine speeds A, B and C shall be calculated according to the above provisions;

                     b)

                     the engine shall be mapped along the full load curve, from maximum no load speed to idle speed, using at least 5 measurement points per 1 000 rpm intervals and measurement points within ± 50 rpm of the speed at declared maximum power. The maximum power, nhi and nlo shall be determined from this mapping curve, and engine speeds A, B and C shall be calculated according to the above provisions.

               If the measured engine speeds A, B and C are within ± 3 % of the engine speeds as declared by the manufacturer, the declared engine speeds shall be used for the emissions test. If the tolerance is exceeded for any of the engine speeds, the measured engine speeds shall be used for the emissions test.
         1.2.   Determination of dynamometer settings
         The torque curve at full load shall be determined by experimentation to calculate the torque values for the specified test modes under net conditions, as specified in Annex II, Appendix 1, Section 8.2. The power absorbed by engine-driven equipment, if applicable, shall be taken into account. The dynamometer setting for each test mode shall be calculated using the formula:

             if tested under net conditions

             if not tested under net conditions
         where:

                     s

                     =

                     dynamometer setting, kW

                     P(n)

                     =

                     net engine power as indicated in Annex II, Appendix 1, Section 8.2, kW

                     L

                     =

                     per cent load as indicated in Section 2.7.1, %

                     P(a)

                     =

                     power absorbed by auxiliaries to be fitted as indicated in Annex II, Appendix 1, Section 6.1

                     P(b)

                     =

                     power absorbed by auxiliaries to be removed as indicated in Annex II, Appendix 1, Section 6.2

               2.   ESC TEST RUN
         At the manufacturers request, a dummy test may be run for conditioning of the engine and exhaust system before the measurement cycle.
         2.1.   Preparation of the sampling filters
         At least one hour before the test, each filter (pair) shall be placed in a closed, but unsealed petri dish and placed in a weighing chamber for stabilisation. At the end of the stabilisation period, each filter (pair) shall be weighed and the tare weight shall be recorded. The filter (pair) shall then be stored in a closed Petri dish or sealed filter holder until needed for testing. If the filter (pair) is not used within eight hours of its removal from the weighing chamber, it must be conditioned and reweighed before use.
         2.2.   Installation of the measuring equipment
         The instrumentation and sample probes shall be installed as required. When using a full flow dilution system for exhaust gas dilution, the tailpipe shall be connected to the system.
         2.3.   Starting the dilution system and the engine
         The dilution system and the engine shall be started and warmed up until all temperatures and pressures have stabilised at maximum power according to the recommendation of the manufacturer and good engineering practice.
         2.4.   Starting the particulate sampling system
         The particulate sampling system shall be started and running on by-pass. The particulate background level of the dilution air may be determined by passing dilution air through the particulate filters. If filtered dilution air is used, one measurement may be done prior to or after the test. If the dilution air is not filtered, measurements at the beginning and at the end of the cycle, may be done, and the values averaged.
         2.5.   Adjustment of the dilution ratio
         The dilution air shall be set such that the temperature of the diluted exhaust gas measured immediately prior to the primary filter shall not exceed 325 K (52 °C) at any mode. The dilution ratio (q) shall not be less than 4.
         For systems that use CO2 or NOx concentration measurement for dilution ratio control, the CO2 or NOx content of the dilution air must be measured at the beginning and at the end of each test. The pre- and post-test background CO2 or NOx concentration measurements of the dilution air must be within 100 ppm or 5 ppm of each other, respectively.
         2.6.   Checking the analysers
         The emission analysers shall be set at zero and spanned.
         2.7.   Test cycle
         2.7.1.   The following 13-mode cycle shall be followed in dynamometer operation on the test engine

                     Mode number

                     Engine speed

                     Percent load

                     Weighting factor

                     Mode length

                     1

                     idle

                     —

                     0,15

                     4 minutes

                     2

                     A

                     100

                     0,08

                     2 minutes

                     3

                     B

                     50

                     0,10

                     2 minutes

                     4

                     B

                     75

                     0,10

                     2 minutes

                     5

                     A

                     50

                     0,05

                     2 minutes

                     6

                     A

                     75

                     0,05

                     2 minutes

                     7

                     A

                     25

                     0,05

                     2 minutes

                     8

                     B

                     100

                     0,09

                     2 minutes

                     9

                     B

                     25

                     0,10

                     2 minutes

                     10

                     C

                     100

                     0,08

                     2 minutes

                     11

                     C

                     25

                     0,05

                     2 minutes

                     12

                     C

                     75

                     0,05

                     2 minutes

                     13

                     C

                     50

                     0,05

                     2 minutes

               2.7.2.   Test sequence
         The test sequence shall be started. The test shall be performed in the order of the mode numbers as set out in Section 2.7.1.
         The engine must be operated for the prescribed time in each mode, completing engine speed and load changes in the first 20 seconds. The specified speed shall be held to within ± 50 rpm and the specified torque shall be held to within ± 2 % of the maximum torque at the test speed.
         At the manufacturers request, the test sequence may be repeated a sufficient number of times for sampling more particulate mass on the filter. The manufacturer shall supply a detailed description of the data evaluation and calculation procedures. The gaseous emissions shall only be determined on the first cycle.
         2.7.3.   Analyser response
         The output of the analysers shall be recorded on a strip chart recorder or measured with an equivalent data acquisition system with the exhaust gas flowing through the analysers throughout the test cycle.
         2.7.4.   Particulate sampling
         One pair of filters (primary and back-up filters, see Annex III, Appendix 4) shall be used for the complete test procedure. The modal weighting factors specified in the test cycle procedure shall be taken into account by taking a sample proportional to the exhaust mass flow during each individual mode of the cycle. This can be achieved by adjusting sample flow rate, sampling time, and/or dilution ratio, accordingly, so that the criterion for the effective weighting factors in Section 5.6 is met.
         The sampling time per mode must be at least 4 seconds per 0,01 weighting factor. Sampling must be conducted as late as possible within each mode. Particulate sampling shall be completed no earlier than 5 seconds before the end of each mode.
         2.7.5.   Engine conditions
         The engine speed and load, intake air temperature and depression, exhaust temperature and backpressure, fuel flow and air or exhaust flow, charge air temperature, fuel temperature and humidity shall be recorded during each mode, with the speed and load requirements (see Section 2.7.2) being met during the time of particulate sampling, but in any case during the last minute of each mode.
         Any additional data required for calculation shall be recorded (see Sections 4 and 5).
         2.7.6.   NOx check within the control area
         The NOx check within the control area shall be performed immediately upon completion of mode 13.
         The engine shall be conditioned at mode 13 for a period of three minutes before the start of the measurements. Three measurements shall be made at different locations within the control area, selected by the Technical Service (1). The time for each measurement shall be 2 minutes.
         The measurement procedure is identical to the NOx measurement on the 13-mode cycle, and shall be carried out in accordance with Sections 2.7.3, 2.7.5, and 4.1 of this Appendix, and Annex III, Appendix 4, Section 3.
         The calculation shall be carried out in accordance with Section 4.
         2.7.7.   Rechecking the analysers
         After the emission test a zero gas and the same span gas shall be used for rechecking. The test will be considered acceptable if the difference between the pre-test and post-test results is less than 2 % of the span gas value.
         3.   ELR TEST RUN
         3.1.   Installation of the measuring equipment
         The opacimeter and sample probes, if applicable, shall be installed after the exhaust silencer or any aftertreatment device, if fitted, according to the general installation procedures specified by the instrument manufacturer. Additionally, the requirements of Section 10 of ISO IDS 11614 shall be observed, where appropriate.
         Prior to any zero and full scale checks, the opacimeter shall be warmed up and stabilised according to the instrument manufacturer's recommendations. If the opacimeter is equipped with a purge air system to prevent sooting of the meter optics, this system shall also be activated and adjusted according to the manufacturer's recommendations.
         3.2.   Checking of the opacimeter
         The zero and full scale checks shall be made in the opacity readout mode, since the opacity scale offers two truly definable calibration points, namely 0 % opacity and 100 % opacity. The light absorption coefficient is then correctly calculated based upon the measured opacity and the LA, as submitted by the opacimeter manufacturer, when the instrument is returned to the k readout mode for testing.
         With no blockage of the opacimeter light beam, the readout shall be adjusted to 0,0 % ± 1,0 % opacity. With the light being prevented from reaching the receiver, the readout shall be adjusted to 100,0 % ± 1,0 % opacity.
         3.3.   Test cycle
         3.3.1.   Conditioning of the engine
         Warming up of the engine and the system shall be at maximum power in order to stabilise the engine parameters according to the recommendation of the manufacturer. The preconditioning phase should also protect the actual measurement against the influence of deposits in the exhaust system from a former test.
         When the engine is stabilised, the cycle shall be started within 20 ± 2 s after the preconditioning phase. At the manufacturers request, a dummy test may be run for additional conditioning before the measurement cycle.
         3.3.2.   Test sequence
         The test consists of a sequence of three load steps at each of the three engine speeds A (cycle 1), B (cycle 2) and C (cycle 3) determined in accordance with Annex III, Section 1.1, followed by cycle 4 at a speed within the control area and a load between 10 % and 100 %, selected by the Technical Service (2). The following sequence shall be followed in dynamometer operation on the test engine, as shown in Figure 3.

                     (a)

                     The engine shall be operated at engine speed A and 10 per cent load for 20 ± 2 s. The specified speed shall be held to within ± 20 rpm and the specified torque shall be held to within ± 2 % of the maximum torque at the test speed.

                     (b)

                     At the end of the previous segment, the speed control lever shall be moved rapidly to, and held in, the wide open position for 10 ± 1 s. The necessary dynamometer load shall be applied to keep the engine speed within ± 150 rpm during the first 3 s, and within ± 20 rpm during the rest of the segment.

                     (c)

                     The sequence described in (a) and (b) shall be repeated two times.

                     (d)

                     Upon completion of the third load step, the engine shall be adjusted to engine speed B and 10 per cent load within 20 ± 2 s.

                     (e)

                     The sequence (a) to (c) shall be run with the engine operating at engine speed B.

                     (f)

                     Upon completion of the third load step, the engine shall be adjusted to engine speed C and 10 per cent load within 20 ± 2 s.

                     (g)

                     The sequence (a) to (c) shall be run with the engine operating at engine speed C.

                     (h)

                     Upon completion of the third load step, the engine shall be adjusted to the selected engine speed and any load above 10 per cent within 20 ± 2 s.

                     (i)

                     The sequence (a) to (c) shall be run with the engine operating at the selected engine speed.

               3.4.   Cycle validation
         The relative standard deviations of the mean smoke values at each test speed (SVA, SVB, SVC, as calculated in accordance with Section 6.3.3 of this Appendix from the three successive load steps at each test speed) shall be lower than 15 % of the mean value, or 10 % of the limit value shown in Table 1 of Annex I, whichever is greater. If the difference is greater, the sequence shall be repeated until three successive load steps meet the validation criteria.
         3.5.   Rechecking of the opacimeter
         The post-test opacimeter zero drift value shall not exceed ± 5,0 % of the limit value shown in Table 1 of Annex I.
         4.   CALCULATION OF THE GASEOUS EMISSIONS
         4.1.   Data evaluation
         For the evaluation of the gaseous emissions, the chart reading of the last 30 seconds of each mode shall be averaged, and the average concentrations (conc) of HC, CO and NOx during each mode shall be determined from the average chart readings and the corresponding calibration data. A different type of recording can be used if it ensures an equivalent data acquisition.
         For the NOx check within the control area, the above requirements apply for NOx, only.
         The exhaust gas flow GEXHW or the diluted exhaust gas flow GTOTW, if used optionally, shall be determined in accordance with Annex III, Appendix 4, Section 2.3.
         4.2.   Dry/wet correction
         The measured concentration shall be converted to a wet basis according to the following formulae, if not already measured on a wet basis.

         For the raw exhaust gas:

         and,

         For the diluted exhaust gas:

         or,

                     For the dilution air

                     For the intake air (if different from the dilution air)

               where:

                     Ha, Hd

                     =

                     g water per kg dry air

                     Rd, Ra

                     =

                     relative humidity of the dilution/intake air, %

                     pd, pa

                     =

                     saturation vapour pressure of the dilution/intake air, kPa

                     pB

                     =

                     total barometric pressure, kPa

               4.3.   NOx correction for humidity and temperature
         As the NOx emission depends on ambient air conditions, the NOx concentration shall be corrected for ambient air temperature and humidity with the factors given in the following formulae:

         with:

                     A

                     =

                     0,309 GFUEL/GAIRD - 0,0266

                     B

                     =

                     - 0,209 GFUEL/GAIRD + 0,00954

                     Ta

                     =

                     temperature of the air, K

                     Ha

                     =

                     humidity of the intake air, g water per kg dry air

                     Ha

                     =

               in which

                     Ra

                     =

                     relative humidity of the intake air, %

                     pa

                     =

                     saturation vapour pressure of the intake air, kPa

                     pB

                     =

                     total barometric pressure, kPa

               4.4.   Calculation of the emission mass flow rates
         The emission mass flow rates (g/h) for each mode shall be calculated as follows, assuming the exhaust gas density to be 1,293 kg/m3 at 273 K (0 C) and 101,3 kPa:

               where NOx conc, COconc, HCconc
             (3) are the average concentrations (ppm) in the raw exhaust gas, as determined in Section 4.1.
         If, optionally, the gaseous emissions are determined with a full flow dilution system, the following formulae shall be applied:

               where NOx conc, COconc, HCconc
             (3) are the average background corrected concentrations (ppm) of each mode in the diluted exhaust gas, as determined in Annex III, Appendix 2, Section 4.3.1.1.
         4.5.   Calculation of the specific emissions
         The emissions (g/kWh) shall be calculated for all individual components in the following way:

         The weighting factors (WF) used in the above calculation are according to Section 2.7.1.
         4.6.   Calculation of the area control values
         For the three control points selected according to Section 2.7.6, the NOx emission shall be measured and calculated according to Section 4.6.1 and also determined by interpolation from the modes of the test cycle closest to the respective control point according to Section 4.6.2. The measured values are then compared to the interpolated values according to Section 4.6.3.
         4.6.1.   Calculation of the specific emission
         The NOx emission for each of the control points (Z) shall be calculated as follows:

         4.6.2.   Determination of the emission value from the test cycle
         The NOx emission for each of the control points shall be interpolated from the four closest modes of the test cycle that envelop the selected control point Z as shown in Figure 4. For these modes (R, S, T, U), the following definitions apply:

                     Speed(R)

                     =

                     Speed(T) = nRT

                     Speed(S)

                     =

                     Speed(U) = nSU

                     Per cent load(R)

                     =

                     Per cent load(S)

                     Per cent load(T)

                     =

                     Per cent load(U).

               The NOx emission of the selected control point Z shall be calculated as follows:

         and:

         where,

                     ER, ES, ET, EU

                     =

                     specific NOx emission of the enveloping modes calculated in accordance with Section 4.6.1.

                     MR, MS, MT, MU

                     =

                     engine torque of the enveloping modes

         4.6.3.   Comparison of NOx emission values
         The measured specific NOx emission of the control point Z (NOx,Z) is compared to the interpolated value (EZ) as follows:

         5.   CALCULATION OF THE PARTICULATE EMISSION
         5.1.   Data evaluation
         For the evaluation of the particulates, the total sample masses (MSAM,i) through the filters shall be recorded for each mode.
         The filters shall be returned to the weighing chamber and conditioned for at least one hour, but not more than 80 hours, and then weighed. The gross weight of the filters shall be recorded and the tare weight (see Section 1 of this Appendix) subtracted. The particulate mass Mf is the sum of the particulate masses collected on the primary and back-up filters.
         If background correction is to be applied, the dilution air mass (MDIL) through the filters and the particulate mass (Md) shall be recorded. If more than one measurement was made, the quotient Md/MDIL must be calculated for each single measurement and the values averaged.
         5.2.   Partial flow dilution system
         The final reported test results of the particulate emission shall be determined through the following steps. Since various types of dilution rate control may be used, different calculation methods for GEDFW apply. All calculations shall be based upon the average values of the individual modes during the sampling period.
         5.2.1.   Isokinetic systems

         where r corresponds to the ratio of the cross-sectional areas of the isokinetic probe and the exhaust pipe:

         5.2.2.   Systems with measurement of CO2 or NOx concentration

         where:

                     concE

                     =

                     wet concentration of the tracer gas in the raw exhaust

                     concD

                     =

                     wet concentration of the tracer gas in the diluted exhaust

                     concA

                     =

                     wet concentration of the tracer gas in the dilution air

               Concentrations measured on a dry basis shall be converted to a wet basis according to Section 4.2 of this Appendix.
         5.2.3.   Systems with CO2 measurement and carbon balance method (4)

         where:

                     CO2D

                     =

                     CO2 concentration of the diluted exhaust

                     CO2A

                     =

                     CO2 concentration of the dilution air

               (concentrations in vol % on wet basis)
         This equation is based upon the carbon balance assumption (carbon atoms supplied to the engine are emitted as CO2) and determined through the following steps:

         and

         5.2.4.   Systems with flow measurement

         5.3.   Full flow dilution system
         The reported test results of the particulate emission shall be determined through the following steps. All calculations shall be based upon the average values of the individual modes during the sampling period.

         5.4.   Calculation of the particulate mass flow rate
         The particulate mass flow rate shall be calculated as follows:

         where

            = MSAM=
         i=
         determined over the test cycle by summation of the average values of the individual modes during the sampling period.
         The particulate mass flow rate may be background corrected as follows:

         If more than one measurement is made,  shall be replaced with  .

             for the individual modes
         or,

             for the individual modes.
         5.5.   Calculation of the specific emission
         The particulate emission shall be calculated in the following way:

         5.6.   Effective weighting factor
         The effective weighting factor WFE,i for each mode shall be calculated in the following way:

         The value of the effective weighting factors shall be within ± 0,003 (± 0,005 for the idle mode) of the weighting factors listed in Section 2.7.1.
         6.   CALCULATION OF THE SMOKE VALUES
         6.1.   Bessel algorithm
         The Bessel algorithm shall be used to compute the 1 s average values from the instantaneous smoke readings, converted in accordance with Section 6.3.1. The algorithm emulates a low pass second order filter, and its use requires iterative calculations to determine the coefficients. These coefficients are a function of the response time of the opacimeter system and the sampling rate. Therefore, Section 6.1.1 must be repeated whenever the system response time and/or sampling rate changes.
         6.1.1.   Calculation of filter response time and Bessel constants
         The required Bessel response time (tF) is a function of the physical and electrical response times of the opacimeter system, as specified in Annex III, Appendix 4, Section 5.2.4, and shall be calculated by the following equation:

         where:

                     tp

                     =

                     physical response time, s

                     te

                     =

                     electrical response time, s

               The calculations for estimating the filter cut-off frequency (fc) are based on a step input 0 to 1 in ≤ 0,01 s (see Annex VII). The response time is defined as the time between when the Bessel output reaches 10 % (t10) and when it reaches 90 % (t90) of this step function. This must be obtained by iterating on fc until t90-t10≈tF. The first iteration for fc is given by the following formula:

         The Bessel constants E and K shall be calculated by the following equations:

         where:

                     D

                     =

                     0,618034

                     Δt

                     =

                     Ω

                     =

               6.1.2.   Calculation of the Bessel algorithm
         Using the values of E and K, the 1 s Bessel averaged response to a step input Si shall be calculated as follows:

         where:

                     Si-2

                     =

                     Si-1 = 0

                     Si

                     =

                     1

                     Yi-2

                     =

                     Yi-1 = 0

               The times t10 and t90 shall be interpolated. The difference in time between t90 and t10 defines the response time tF for that value of fc. If this response time is not close enough to the required response time, iteration shall be continued until the actual response time is within 1 % of the required response as follows:

         6.2.   Data evaluation
         The smoke measurement values shall be sampled with a minimum rate of 20 Hz.
         6.3.   Determination of smoke
         6.3.1.   Data conversion
         Since the basic measurement unit of all opacimeters is transmittance, the smoke values shall be converted from transmittance (τ) to the light absorption coefficient (k) as follows:

         and

         where:

                     k

                     =

                     light absorption coefficient, m-1

                     LA

                     =

                     effective optical path length, as submitted by instrument manufacturer, m

                     N

                     =

                     opacity, %

                     τ

                     =

                     transmittance, %

               The conversion shall be applied, before any further data processing is made.
         6.3.2.   Calculation of Bessel averaged smoke
         The proper cut-off frequency fc is the one that produces the required filter response time tF. Once this frequency has been determined through the iterative process of Section 6.1.1, the proper Bessel algorithm constants E and K shall be calculated. The Bessel algorithm shall then be applied to the instantaneous smoke trace (k-value), as described in Section 6.1.2:

         The Bessel algorithm is recursive in nature. Thus, it needs some initial input values of Si-1 and Si-2 and initial output values Yi-1 and Yi-2 to get the algorithm started. These may be assumed to be 0.
         For each load step of the three speeds A, B and C, the maximum 1s value Ymax shall be selected from the individual Yi values of each smoke trace.
         6.3.3.   Final result
         The mean smoke values (SV) from each cycle (test speed) shall be calculated as follows:

                     For test speed A:

                     SVA = (Ymax1,A + Ymax2,A + Ymax3,A) / 3

                     For test speed B:

                     SVB = (Ymax1,B + Ymax2,B + Ymax3,B) / 3

                     For test speed C:

                     SVC = (Ymax1,C + Ymax2,C + Ymax3,C) / 3

               where:

                     Ymax1, Ymax2, Ymax3

                     =

                     highest 1 s Bessel averaged smoke value at each of the three load steps

               The final value shall be calculated as follows:
         SV = (0,43 x SVA) + (0,56 x SVB) + (0,01 x SVC)

            (1)  The test points shall be selected using approved statistical methods of randomisation.

            (2)  The test points shall be selected using approved statistical methods of randomisation.

            (3)  Based on C1 equivalent.

            (4)  The value is only valid for the reference fuel specified in Annex IV.

         Appendix 2
         ETC TEST CYCLE
         1.   ENGINE MAPPING PROCEDURE
         1.1.   Determination of the mapping speed range
         For generating the ETC on the test cell, the engine needs to be mapped prior to the test cycle for determining the speed vs torque curve. The minimum and maximum mapping speeds are defined as follows:

                     Minimum mapping speed

                     =

                     idle speed

                     Maximum mapping speed

                     =

                     nhi × 1,02 or speed where full load torque drops off to zero, whichever is lower

               1.2.   Performing the engine power map
         The engine shall be warmed up at maximum power in order to stabilise the engine parameters according to the recommendation of the manufacturer and good engineering practice. When the engine is stabilised, the engine map shall be performed as follows:

                     (a)

                     the engine shall be unloaded and operated at idle speed;

                     (b)

                     the engine shall be operated at full load setting of the injection pump at minimum mapping speed;

                     (c)

                     the engine speed shall be increased at an average rate of 8 ± 1 min-1 /s from minimum to maximum mapping speed. Engine speed and torque points shall be recorded at a sample rate of a least one point per second.

               1.3.   Mapping curve generation
         All data points recorded under Section 1.2 shall be connected using linear interpolation between points. The resulting torque curve is the mapping curve and shall be used to convert the normalised torque values of the engine cycle into actual torque values for the test cycle, as described in Section 2.
         1.4.   Alternate mapping
         If a manufacturer believes that the above mapping techniques are unsafe or unrepresentative for any given engine, alternate mapping techniques may be used. These alternate techniques must satisfy the intent of the specified mapping procedures to determine the maximum available torque at all engine speeds achieved during the test cycles. Deviations from the mapping techniques specified in this section for reasons of safety or representativeness shall be approved by the Technical Service along with the justification for their use. In no case, however, shall descending continual sweeps of engine speed be used for governed or turbocharged engines.
         1.5.   Replicate tests
         An engine need not be mapped before each and every test cycle. An engine shall be remapped prior to a test cycle if:

                     —

                     an unreasonable amount of time has transpired since the last map, as determined by engineering judgement,
                     or

                     —

                     physical changes or recalibrations have been made to the engine which may potentially affect engine performance.

               2.   GENERATION OF THE REFERENCE TEST CYCLE
         The transient test cycle is described in Appendix 3 to this Annex. The normalised values for torque and speed shall be changed to the actual values, as follows, resulting in the reference cycle.
         2.1.   Actual speed
         The speed shall be unnormalised using the following equation:

         The reference speed (nref) corresponds to the 100 % speed values specified in the engine dynamometer schedule of Appendix 3. It is defined as follows (see Figure 1 of Annex I):

         where nhi and nlo are either specified according to Annex I, Section 2 or determined according to Annex III, Appendix 1, Section 1.1.
         2.2.   Actual torque
         The torque is normalised to the maximum torque at the respective speed. The torque values of the reference cycle shall be unnormalised, using the mapping curve determined according to Section 1.3, as follows:
         Actual torque = (% torque × max. torque/100)
         for the respective actual speed as determined in Section 2.1.
         The negative torque values of the motoring points (‘m’) shall take on, for purposes of reference cycle generation, unnormalised values determined in either of the following ways:

                     —

                     negative 40 % of the positive torque available at the associated speed point,

                     —

                     mapping of the negative torque required to motor the engine from minimum to maximum mapping speed,

                     —

                     determination of the negative torque required to motor the engine at idle and reference speeds and linear interpolation between these two points.

               2.3.   Example of the unnormalisation procedure
         As an example, the following test point shall be unnormalised:

                     % speed

                     =

                     43

                     % torque

                     =

                     82

               Given the following values:

                     reference speed

                     =

                     2 200 min-1

                     idle speed

                     =

                     600 min-1

               results in,
         actual speed = (43 × (2 200 - 600)/100) + 600 = 1 288 min-1

         actual torque = (82 × 700/100) = 574 Nm
         where the maximum torque observed from the mapping curve at 1 288 min-1 is 700 Nm.
         3.   EMISSIONS TEST RUN
         At the manufacturers request, a dummy test may be run for conditioning of the engine and exhaust system before the measurement cycle.
         NG and LPG fuelled engines shall be run-in using the ETC test. The engine shall be run over a minimum of two ETC cycles and until the CO emission measured over one ETC cycle does not exceed by more than 10 % the CO emission measured over the previous ETC cycle.
         3.1.   Preparation of the sampling filters (diesel engines only)
         At least one hour before the test, each filter (pair) shall be placed in a closed, but unsealed Petri dish and placed in a weighing chamber for stabilisation. At the end of the stabilisation period, each filter (pair) shall be weighed and the tare weight shall be recorded. The filter (pair) shall then be stored in a closed Petri dish or sealed filter holder until needed for testing. If the filter (pair) is not used within eight hours of its removal from the weighing chamber, it must be conditioned and reweighed before use.
         3.2.   Installation of the measuring equipment
         The instrumentation and sample probes shall be installed as required. The tailpipe shall be connected to the full flow dilution system.
         3.3.   Starting the dilution system and the engine
         The dilution system and the engine shall be started and warmed up until all temperatures and pressures have stabilised at maximum power according to the recommendation of the manufacturer and good engineering practice.
         3.4.   Starting the particulate sampling system (diesel engines only)
         The particulate sampling system shall be started and running on by-pass. The particulate background level of the dilution air may be determined by passing dilution air through the particulate filters. If filtered dilution air is used, one measurement may be done prior to or after the test. If the dilution air is not filtered, measurements at the beginning and at the end of the cycle, may be done, and the values averaged.
         3.5.   Adjustment of the full flow dilution system
         The total diluted exhaust gas flow shall be set to eliminate water condensation in the system, and to obtain a maximum filter face temperature of 325 K (52 °C) or less (see Annex V, Section 2.3.1, DT).
         3.6.   Checking the analysers
         The emission analysers shall be set at zero and spanned. If sample bags are used, they shall be evacuated.
         3.7.   Engine starting procedure
         The stabilised engine shall be started according to the manufacturer's recommended starting procedure in the owner's manual, using either a production starter motor or the dynamometer. Optionally, the test may start directly from the engine preconditioning phase without shutting the engine off, when the engine has reached the idle speed.
         3.8.   Test cycle
         3.8.1.   Test sequence
         The test sequence shall be started, if the engine has reached idle speed. The test shall be performed according to the reference cycle as set out in Section 2 of this Appendix. Engine speed and torque command set points shall be issued at 5 Hz (10 Hz recommended) or greater. Feedback engine speed and torque shall be recorded at least once every second during the test cycle, and the signals may be electronically filtered.
         3.8.2.   Analyser response
         At the start of the engine or test sequence, if the cycle is started directly from the preconditioning, the measuring equipment shall be started, simultaneously:

                     —

                     start collecting or analysing dilution air;

                     —

                     start collecting or analysing diluted exhaust gas;

                     —

                     start measuring the amount of diluted exhaust gas (CVS) and the required temperatures and pressures;

                     —

                     start recording the feedback data of speed and torque of the dynamometer.

               HC and NOx shall be measured continuously in the dilution tunnel with a frequency of 2 Hz. The average concentrations shall be determined by integrating the analyser signals over the test cycle. The system response time shall be no greater than 20 s, and shall be coordinated with CVS flow fluctuations and sampling time/test cycle offsets, if necessary. CO, CO2, NMHC and CH4 shall be determined by integration or by analysing the concentrations in the sample bag, collected over the cycle. The concentrations of the gaseous pollutants in the dilution air shall be determined by integration or by collecting into the background bag. All other values shall be recorded with a minimum of one measurement per second (1 Hz).
         3.8.3.   Particulate sampling (diesel engines only)
         At the start of the engine or test sequence, if the cycle is started directly from the preconditioning, the particulate sampling system shall be switched from by-pass to collecting particulates.
         If no flow compensation is used, the sample pump(s) shall be adjusted so that the flow rate through the particulate sample probe or transfer tube is maintained at a value within ± 5 % of the set flow rate. If flow compensation (i.e. proportional control of sample flow) is used, it must be demonstrated that the ratio of main tunnel flow to particulate sample flow does not change by more than ± 5 % of its set value (except for the first 10 seconds of sampling).

            Note: For double dilution operation, sample flow is the net difference between the flow rate through the sample filters and the secondary dilution air flow rate.
         The average temperature and pressure at the gas meter(s) or flow instrumentation inlet shall be recorded. If the set flow rate cannot be maintained over the complete cycle (within ± 5 %) because of high particulate loading on the filter, the test shall be voided. The test shall be rerun using a lower flow rate and/or a larger diameter filter.
         3.8.4.   Engine stalling
         If the engine stalls anywhere during the test cycle, the engine shall be preconditioned and restarted, and the test repeated. If a malfunction occurs in any of the required test equipment during the test cycle, the test shall be voided.
         3.8.5.   Operations after test
         At the completion of the test, the measurement of the diluted exhaust gas volume, the gas flow into the collecting bags and the particulate sample pump shall be stopped. For an integrating analyser system, sampling shall continue until system response times have elapsed.
         The concentrations of the collecting bags, if used, shall be analysed as soon as possible and in any case not later than 20 minutes after the end of the test cycle.
         After the emission test, a zero gas and the same span gas shall be used for re-checking the analysers. The test will be considered acceptable if the difference between the pre-test and post-test results is less than 2 % of the span gas value.
         For diesel engines only, the particulate filters shall be returned to the weighing chamber no later than one hour after completion of the test and shall be conditioned in a closed, but unsealed Petri dish for at least one hour, but not more than 80 hours before weighing.
         3.9.   Verification of the test run
         3.9.1.   Data shift
         To minimise the biasing effect of the time lag between the feedback and reference cycle values, the entire engine speed and torque feedback signal sequence may be advanced or delayed in time with respect to the reference speed and torque sequence. If the feedback signals are shifted, both speed and torque must be shifted the same amount in the same direction.
         3.9.2.   Calculation of the cycle work
         The actual cycle work Wact (kWh) shall be calculated using each pair of engine feedback speed and torque values recorded. This shall be done after any feedback data shift has occurred, if this option is selected. The actual cycle work Wact is used for comparison to the reference cycle work Wref and for calculating the brake specific emissions (see Sections 4.4 and 5.2). The same methodology shall be used for integrating both reference and actual engine power. If values are to be determined between adjacent reference or adjacent measured values, linear interpolation shall be used.
         In integrating the reference and actual cycle work, all negative torque values shall be set equal to zero and included. If integration is performed at a frequency of less than 5 Hertz, and if, during a given time segment, the torque value changes from positive to negative or negative to positive, the negative portion shall be computed and set equal to zero. The positive portion shall be included in the integrated value.
         Wact shall be between - 15 % and + 5 % of Wref

         3.9.3.   Validation statistics of the test cycle
         Linear regressions of the feedback values on the reference values shall be performed for speed, torque and power. This shall be done after any feedback data shift has occurred, if this option is selected. The method of least squares shall be used, with the best fit equation having the form:

         where:

                     y

                     =

                     feedback (actual) value of speed (min-1), torque (Nm), or power (kW)

                     m

                     =

                     slope of the regression line

                     x

                     =

                     reference value of speed (min-1), torque (Nm), or power (kW)

                     b

                     =

                     y intercept of the regression line

               The standard error of estimate (SE) of y on x and the coefficient of determination (r2) shall be calculated for each regression line.
         It is recommended that this analysis be performed at 1 Hertz. All negative reference torque values and the associated feedback values shall be deleted from the calculation of cycle torque and power validation statistics. For a test to be considered valid, the criteria of Table 6 must be met.
         Table 6
         Regression line tolerances

                     Speed

                     Torque

                     Power

                     Standard error of estimate (SE) of Y on X

                     Max 100 min–1

                     Max 13 % (15 %) (1) of power map maximum engine torque

                     Max 8 % (15 %) (1) of power map maximum engine power

                     Slope of the regression line, m

                     0,95 to 1,03

                     0,83–1,03

                     0,89–1,03 (0,83–1,03) (1)

                     Coefficient of determination, r2

                     min 0,9700 (min 0,9500) (1)

                     min 0,8800 (min 0,7500) (1)

                     min 0,9100 (min 0,7500) (1)

                     Y intercept of the regression line, b

                     ± 50 min-1

                     ± 20 Nm or ± 2 % (± 20 Nm or ± 3 %) (1) of max torque whichever is greater

                     ± 4 kW or ± 2 % (± 4 kW or ± 3 %) (1) of max power whichever is greater

               Point deletions from the regression analyses are permitted where noted in Table 7.
         Table 7
         Permitted point deletions from regression analysis

                     Conditions

                     Points to be deleted

                     Full load and torque feedback < torque reference

                     Torque and/or power

                     No load, not an idle point, and torque feedback > torque reference

                     Torque and/or power

                     No load/closed throttle, idle point and speed > reference idle speed

                     Speed and/or power

               4.   CALCULATION OF THE GASEOUS EMISSIONS
         4.1.   Determination of the diluted exhaust gas flow
         The total diluted exhaust gas flow over the cycle (kg/test) shall be calculated from the measurement values over the cycle and the corresponding calibration data of the flow measurement device (V0 for PDP or KV for CFV, as determined in Annex III, Appendix 5, Section 2). The following formulae shall be applied, if the temperature of the diluted exhaust is kept constant over the cycle by using a heat exchanger (± 6 K for a PDP-CVS, ± 11 K for a CFV-CVS, see Annex V, Section 2.3).
         For the PDP-CVS system:
         MTOTW = 1,293 × V0 × Np × (pB – p1) × 273 / (101,3 × T)
         where:

                     MTOTW

                     =

                     mass of the diluted exhaust gas on wet basis over the cycle, kg

                     V0

                     =

                     volume of gas pumped per revolution under test conditions, m3/rev

                     NP

                     =

                     total revolutions of pump per test

                     pB

                     =

                     atmospheric pressure in the test cell, kPa

                     p1

                     =

                     pressure depression below atmospheric at pump inlet, kPa

                     T

                     =

                     average temperature of the diluted exhaust gas at pump inlet over the cycle, K

               For the CFV-CVS system:
         MTOTW = 1,293 × t × Kv × pA / T0,5

         where:

                     MTOTW

                     =

                     mass of the diluted exhaust gas on wet basis over the cycle, kg

                     t

                     =

                     cycle time, s

                     Kv

                     =

                     calibration coefficient of the critical flow venturi for standard conditions

                     pA

                     =

                     absolute pressure at venturi inlet, kPa

                     T

                     =

                     absolute temperature at venturi inlet, K

               If a system with flow compensation is used (i.e. without heat exchanger), the instantaneous mass emissions shall be calculated and integrated over the cycle. In this case, the instantaneous mass of the diluted exhaust gas shall be calculated as follows:
         For the PDP-CVS system:
         MTOTW,i = 1,293 × V0 × Np,i × (pB – p1) × 273 / (101,3 × T)
         where:

                     MTOTW,i

                     =

                     instantaneous mass of the diluted exhaust gas on wet basis, kg

                     Np,i

                     =

                     total revolutions of pump per time interval

               For the CFV-CVS system:
         MTOTW,i = 1,293 × Δti × Kv × pA / T0,5

         where:

                     MTOTW,i

                     =

                     instantaneous mass of the diluted exhaust gas on wet basis, kg

                     Δti

                     =

                     time interval, s

               If the total sample mass of particulates (MSAM) and gaseous pollutants exceeds 0,5 % of the total CVS flow (MTOTW), the CVS flow shall be corrected for MSAM or the particulate sample flow shall be returned to the CVS prior to the flow measuring device (PDP or CFV).
         4.2.   NOx correction for humidity
         As the NOx emission depends on ambient air conditions, the NOx concentration shall be corrected for ambient air humidity with the factors given in the following formulae:

                     (a)

                     for diesel engines:

                     (b)

                     for gas engines:

               where:

                     Ha

                     =

                     humidity of the intake air water per kg dry air

               in which:

                     Ra

                     =

                     relative humidity of the intake air, %

                     pa

                     =

                     saturation vapour pressure of the intake air, kPa

                     pB

                     =

                     total barometric pressure, kPa

               4.3.   Calculation of the emission mass flow
         4.3.1.   Systems with constant mass flow
         For systems with heat exchanger, the mass of the pollutants (g/test) shall be determined from the following equations:

               where:

                     NOx conc, COconc, HCconc
                         (2), NMHCconc

                     =

                     average background corrected concentrations over the cycle from integration (mandatory for NOx and HC) or bag measurement, ppm

                     MTOTW

                     =

                     total mass of diluted exhaust gas over the cycle as determined in Section 4.1, kg

                     KH,D

                     =

                     humidity correction factor for diesel engines as determined in Section 4.2

                     KH,G

                     =

                     humidity correction factor for gas engines as determined in Section 4.2

               Concentrations measured on a dry basis shall be converted to a wet basis in accordance with Annex III, Appendix 1, Section 4.2.
         The determination of NMHCconc depends on the method used (see Annex III, Appendix 4, Section 3.3.4). In both cases, the CH4 concentration shall be determined and subtracted from the HC concentration as follows:

                     (a)

                     GC method

                     (b)

                     NMC method

               where:

                     HC(wCutter)

                     =

                     HC concentration with the sample gas flowing through the NMC

                     HC(w/oCutter)

                     =

                     HC concentration with the sample gas bypassing the NMC

                     CEM

                     =

                     methane efficiency as determined per Annex III, Appendix 5, Section 1.8.4.1

                     CEE

                     =

                     ethane efficiency as determined per Annex III, Appendix 5, Section 1.8.4.2

               4.3.1.1.   Determination of the background corrected concentrations
         The average background concentration of the gaseous pollutants in the dilution air shall be subtracted from measured concentrations to get the net concentrations of the pollutants. The average values of the background concentrations can be determined by the sample bag method or by continuous measurement with integration. The following formula shall be used.

         where:

                     conc

                     =

                     concentration of the respective pollutant in the diluted exhaust gas, corrected by the amount of the respective pollutant contained in the dilution air, ppm

                     conce

                     =

                     concentration of the respective pollutant measured in the diluted exhaust gas, ppm

                     concd

                     =

                     concentration of the respective pollutant measured in the dilution air, ppm

                     DF

                     =

                     dilution factor

               The dilution factor shall be calculated as follows:

                     (a)

                     for diesel and LPG fuelled gas engines

                     (b)

                     for NG-fuelled gas engines

               where:

                     CO2, conce

                     =

                     concentration of CO2 in the diluted exhaust gas, % vol

                     HCconce

                     =

                     concentration of HC in the diluted exhaust gas, ppm C1

                     NMHCconce

                     =

                     concentration of NMHC in the diluted exhaust gas, ppm C1

                     COconce

                     =

                     concentration of CO in the diluted exhaust gas, ppm

                     FS

                     =

                     stoichiometric factor

               Concentrations measured on dry basis shall be converted to a wet basis in accordance with Annex III, Appendix 1, Section 4.2.
         The stoichiometric factor shall be calculated as follows:

         where:

                     x, y

                     =

                     fuel composition CxHy

               Alternatively, if the fuel composition is not known, the following stoichiometric factors may be used:

                     FS (diesel)

                     =

                     13,4

                     FS (LPG)

                     =

                     11,6

                     FS (NG)

                     =

                     9,5

               4.3.2.   Systems with flow compensation
         For systems without heat exchanger, the mass of the pollutants (g/test) shall be determined by calculating the instantaneous mass emissions and integrating the instantaneous values over the cycle. Also, the background correction shall be applied directly to the instantaneous concentration value. The following formulae shall be applied:

               where:

                     conce

                     =

                     concentration of the respective pollutant measured in the diluted exhaust gas, ppm

                     concd

                     =

                     concentration of the respective pollutant measured in the dilution air, ppm

                     MTOTW,i

                     =

                     instantaneous mass of the diluted exhaust gas (see Section 4.1), kg

                     MTOTW

                     =

                     total mass of diluted exhaust gas over the cycle (see Section 4.1), kg

                     KH,D

                     =

                     humidity correction factor for diesel engines as determined in Section 4.2

                     KH,G

                     =

                     humidity correction factor for gas engines as determined in Section 4.2

                     DF

                     =

                     dilution factor as determined in Section 4.3.1.1

               4.4.   Calculation of the specific emissions
         The emissions (g/kWh) shall be calculated for all individual components in the following way:

             (diesel and gas engines)

             (diesel and gas engines)

             (diesel and LPG fuelled gas engines)

             (NG fuelled gas engines)

             (NG fuelled gas engines)
         where:

                     Wact

                     =

                     actual cycle work as determined in Section 3.9.2, kWh

               5.   CALCULATION OF THE PARTICULATE EMISSION (DIESEL ENGINES ONLY)
         5.1.   Calculation of the mass flow
         The particulate mass (g/test) shall be calculated as follows:

         where:

                     Mf

                     =

                     particulate mass sampled over the cycle, mg

                     MTOTW

                     =

                     total mass of diluted exhaust gas over the cycle as determined in Section 4.1, kg

                     MSAM

                     =

                     mass of diluted exhaust gas taken from the dilution tunnel for collecting particulates, kg

               and:

                     Mf

                     =

                     Mf,p + Mf,b if weighed separately, mg

                     Mf,p

                     =

                     particulate mass collected on the primary filter, mg

                     Mf,b

                     =

                     particulate mass collected on the back-up filter, mg

               If a double dilution system is used, the mass of the secondary dilution air shall be subtracted from the total mass of the double diluted exhaust gas sampled through the particulate filters

         where:

                     MTOT

                     =

                     mass of double diluted exhaust gas through particulate filter, kg

                     MSEC

                     =

                     mass of secondary dilution air, kg

               If the particulate background level of the dilution air is determined in accordance with Section 3.4, the particulate mass may be background corrected. In this case, the particulate mass (g/test) shall be calculated as follows:

         where:

                     Mf, MSAM, MTOTW

                     =

                     see above

                     MDIL

                     =

                     mass of primary dilution air sampled by background particulate sampler, kg

                     Md

                     =

                     mass of the collected background particulates of the primary dilution air, mg

                     DF

                     =

                     dilution factor as determined in Section 4.3.1.1

               5.2.   Calculation of the specific emission
         The particulate emission (g/kWh) shall be calculated in the following way:

         where:

                     Wact

                     =

                     actual cycle work as determined in Section 3.9.2, kWh.

            (1)  Until 1 October 2005, the figures shown in brackets may be used for the type-approval testing of gas engines. The Commission shall report on the development of gas engine technology to confirm or modify the regression line tolerances applicable to gas engines given in this table.

            (2)  Based on C1 equivalent.

         Appendix 3
         ETC ENGINE DYNAMOMETER SCHEDULE

                     Time
                     s

                     Normal speed
                     %

                     Normal torque
                     %

                     1

                     0

                     0

                     2

                     0

                     0

                     3

                     0

                     0

                     4

                     0

                     0

                     5

                     0

                     0

                     6

                     0

                     0

                     7

                     0

                     0

                     8

                     0

                     0

                     9

                     0

                     0

                     10

                     0

                     0

                     11

                     0

                     0

                     12

                     0

                     0

                     13

                     0

                     0

                     14

                     0

                     0

                     15

                     0

                     0

                     16

                     0,1

                     1,5

                     17

                     23,1

                     21,5

                     18

                     12,6

                     28,5

                     19

                     21,8

                     71

                     20

                     19,7

                     76,8

                     21

                     54,6

                     80,9

                     22

                     71,3

                     4,9

                     23

                     55,9

                     18,1

                     24

                     72

                     85,4

                     25

                     86,7

                     61,8

                     26

                     51,7

                     0

                     27

                     53,4

                     48,9

                     28

                     34,2

                     87,6

                     29

                     45,5

                     92,7

                     30

                     54,6

                     99,5

                     31

                     64,5

                     96,8

                     32

                     71,7

                     85,4

                     33

                     79,4

                     54,8

                     34

                     89,7

                     99,4

                     35

                     57,4

                     0

                     36

                     59,7

                     30,6

                     37

                     90,1

                     ‘m’

                     38

                     82,9

                     ‘m’

                     39

                     51,3

                     ‘m’

                     40

                     28,5

                     ‘m’

                     41

                     29,3

                     ‘m’

                     42

                     26,7

                     ‘m’

                     43

                     20,4

                     ‘m’

                     44

                     14,1

                     0

                     45

                     6,5

                     0

                     46

                     0

                     0

                     47

                     0

                     0

                     48

                     0

                     0

                     49

                     0

                     0

                     50

                     0

                     0

                     51

                     0

                     0

                     52

                     0

                     0

                     53

                     0

                     0

                     54

                     0

                     0

                     55

                     0

                     0

                     56

                     0

                     0

                     57

                     0

                     0

                     58

                     0

                     0

                     59

                     0

                     0

                     60

                     0

                     0

                     61

                     0

                     0

                     62

                     25,5

                     11,1

                     63

                     28,5

                     20,9

                     64

                     32

                     73,9

                     65

                     4

                     82,3

                     66

                     34,5

                     80,4

                     67

                     64,1

                     86

                     68

                     58

                     0

                     69

                     50,3

                     83,4

                     70

                     66,4

                     99,1

                     71

                     81,4

                     99,6

                     72

                     88,7

                     73,4

                     73

                     52,5

                     0

                     74

                     46,4

                     58,5

                     75

                     48,6

                     90,9

                     76

                     55,2

                     99,4

                     77

                     62,3

                     99

                     78

                     68,4

                     91,5

                     79

                     74,5

                     73,7

                     80

                     38

                     0

                     81

                     41,8

                     89,6

                     82

                     47,1

                     99,2

                     83

                     52,5

                     99,8

                     84

                     56,9

                     80,8

                     85

                     58,3

                     11,8

                     86

                     56,2

                     ‘m’

                     87

                     52

                     ‘m’

                     88

                     43,3

                     ‘m’

                     89

                     36,1

                     ‘m’

                     90

                     27,6

                     ‘m’

                     91

                     21,1

                     ‘m’

                     92

                     8

                     0

                     93

                     0

                     0

                     94

                     0

                     0

                     95

                     0

                     0

                     96

                     0

                     0

                     97

                     0

                     0

                     98

                     0

                     0

                     99

                     0

                     0

                     100

                     0

                     0

                     101

                     0

                     0

                     102

                     0

                     0

                     103

                     0

                     0

                     104

                     0

                     0

                     105

                     0

                     0

                     106

                     0

                     0

                     107

                     0

                     0

                     108

                     11,6

                     14,8

                     109

                     0

                     0

                     110

                     27,2

                     74,8

                     111

                     17

                     76,9

                     112

                     36

                     78

                     113

                     59,7

                     86

                     114

                     80,8

                     17,9

                     115

                     49,7

                     0

                     116

                     65,6

                     86

                     117

                     78,6

                     72,2

                     118

                     64,9

                     ‘m’

                     119

                     44,3

                     ‘m’

                     120

                     51,4

                     83,4

                     121

                     58,1

                     97

                     122

                     69,3

                     99,3

                     123

                     72

                     20,8

                     124

                     72,1

                     ‘m’

                     125

                     65,3

                     ‘m’

                     126

                     64

                     ‘m’

                     127

                     59,7

                     ‘m’

                     128

                     52,8

                     ‘m’

                     129

                     45,9

                     ‘m’

                     130

                     38,7

                     ‘m’

                     131

                     32,4

                     ‘m’

                     132

                     27

                     ‘m’

                     133

                     21,7

                     ‘m’

                     134

                     19,1

                     0,4

                     135

                     34,7

                     14

                     136

                     16,4

                     48,6

                     137

                     0

                     11,2

                     138

                     1,2

                     2,1

                     139

                     30,1

                     19,3

                     140

                     30

                     73,9

                     141

                     54,4

                     74,4

                     142

                     77,2

                     55,6

                     143

                     58,1

                     0

                     144

                     45

                     82,1

                     145

                     68,7

                     98,1

                     146

                     85,7

                     67,2

                     147

                     60,2

                     0

                     148

                     59,4

                     98

                     149

                     72,7

                     99,6

                     150

                     79,9

                     45

                     151

                     44,3

                     0

                     152

                     41,5

                     84,4

                     153

                     56,2

                     98,2

                     154

                     65,7

                     99,1

                     155

                     74,4

                     84,7

                     156

                     54,4

                     0

                     157

                     47,9

                     89,7

                     158

                     54,5

                     99,5

                     159

                     62,7

                     96,8

                     160

                     62,3

                     0

                     161

                     46,2

                     54,2

                     162

                     44,3

                     83,2

                     163

                     48,2

                     13,3

                     164

                     51

                     ‘m’

                     165

                     50

                     ‘m’

                     166

                     49,2

                     ‘m’

                     167

                     49,3

                     ‘m’

                     168

                     49,9

                     ‘m’

                     169

                     51,6

                     ‘m’

                     170

                     49,7

                     ‘m’

                     171

                     48,5

                     ‘m’

                     172

                     50,3

                     72,5

                     173

                     51,1

                     84,5

                     174

                     54,6

                     64,8

                     175

                     56,6

                     76,5

                     176

                     58

                     ‘m’

                     177

                     53,6

                     ‘m’

                     178

                     40,8

                     ‘m’

                     179

                     32,9

                     ‘m’

                     180

                     26,3

                     ‘m’

                     181

                     20,9

                     ‘m’

                     182

                     10

                     0

                     183

                     0

                     0

                     184

                     0

                     0

                     185

                     0

                     0

                     186

                     0

                     0

                     187

                     0

                     0

                     188

                     0

                     0

                     189

                     0

                     0

                     190

                     0

                     0

                     191

                     0

                     0

                     192

                     0

                     0

                     193

                     0

                     0

                     194

                     0

                     0

                     195

                     0

                     0

                     196

                     0

                     0

                     197

                     0

                     0

                     198

                     0

                     0

                     199

                     0

                     0

                     200

                     0

                     0

                     201

                     0

                     0

                     202

                     0

                     0

                     203

                     0

                     0

                     204

                     0

                     0

                     205

                     0

                     0

                     206

                     0

                     0

                     207

                     0

                     0

                     208

                     0

                     0

                     209

                     0

                     0

                     210

                     0

                     0

                     211

                     0

                     0

                     212

                     0

                     0

                     213

                     0

                     0

                     214

                     0

                     0

                     215

                     0

                     0

                     216

                     0

                     0

                     217

                     0

                     0

                     218

                     0

                     0

                     219

                     0

                     0

                     220

                     0

                     0

                     221

                     0

                     0

                     222

                     0

                     0

                     223

                     0

                     0

                     224

                     0

                     0

                     225

                     21,2

                     62,7

                     226

                     30,8

                     75,1

                     227

                     5,9

                     82,7

                     228

                     34,6

                     80,3

                     229

                     59,9

                     87

                     230

                     84,3

                     86,2

                     231

                     68,7

                     ‘m’

                     232

                     43,6

                     ‘m’

                     233

                     41,5

                     85,4

                     234

                     49,9

                     94,3

                     235

                     60,8

                     99

                     236

                     70,2

                     99,4

                     237

                     81,1

                     92,4

                     238

                     49,2

                     0

                     239

                     56

                     86,2

                     240

                     56,2

                     99,3

                     241

                     61,7

                     99

                     242

                     69,2

                     99,3

                     243

                     74,1

                     99,8

                     244

                     72,4

                     8,4

                     245

                     71,3

                     0

                     246

                     71,2

                     9,1

                     247

                     67,1

                     ‘m’

                     248

                     65,5

                     ‘m’

                     249

                     64,4

                     ‘m’

                     250

                     62,9

                     25,6

                     251

                     62,2

                     35,6

                     252

                     62,9

                     24,4

                     253

                     58,8

                     ‘m’

                     254

                     56,9

                     ‘m’

                     255

                     54,5

                     ‘m’

                     256

                     51,7

                     17

                     257

                     56,2

                     78,7

                     258

                     59,5

                     94,7

                     259

                     65,5

                     99,1

                     260

                     71,2

                     99,5

                     261

                     76,6

                     99,9

                     262

                     79

                     0

                     263

                     52,9

                     97,5

                     264

                     53,1

                     99,7

                     265

                     59

                     99,1

                     266

                     62,2

                     99

                     267

                     65

                     99,1

                     268

                     69

                     83,1

                     269

                     69,9

                     28,4

                     270

                     70,6

                     12,5

                     271

                     68,9

                     8,4

                     272

                     69,8

                     9,1

                     273

                     69,6

                     7

                     274

                     65,7

                     ‘m’

                     275

                     67,1

                     ‘m’

                     276

                     66,7

                     ‘m’

                     277

                     65,6

                     ‘m’

                     278

                     64,5

                     ‘m’

                     279

                     62,9

                     ‘m’

                     280

                     59,3

                     ‘m’

                     281

                     54,1

                     ‘m’

                     282

                     51,3

                     ‘m’

                     283

                     47,9

                     ‘m’

                     284

                     43,6

                     ‘m’

                     285

                     39,4

                     ‘m’

                     286

                     34,7

                     ‘m’

                     287

                     29,8

                     ‘m’

                     288

                     20,9

                     73,4

                     289

                     36,9

                     ‘m’

                     290

                     35,5

                     ‘m’

                     291

                     20,9

                     ‘m’

                     292

                     49,7

                     11,9

                     293

                     42,5

                     ‘m’

                     294

                     32

                     ‘m’

                     295

                     23,6

                     ‘m’

                     296

                     19,1

                     0

                     297

                     15,7

                     73,5

                     298

                     25,1

                     76,8

                     299

                     34,5

                     81,4

                     300

                     44,1

                     87,4

                     301

                     52,8

                     98,6

                     302

                     63,6

                     99

                     303

                     73,6

                     99,7

                     304

                     62,2

                     ‘m’

                     305

                     29,2

                     ‘m’

                     306

                     46,4

                     22

                     307

                     47,3

                     13,8

                     308

                     47,2

                     12,5

                     309

                     47,9

                     11,5

                     310

                     47,8

                     35,5

                     311

                     49,2

                     83,3

                     312

                     52,7

                     96,4

                     313

                     57,4

                     99,2

                     314

                     61,8

                     99

                     315

                     66,4

                     60,9

                     316

                     65,8

                     ‘m’

                     317

                     59

                     ‘m’

                     318

                     50,7

                     ‘m’

                     319

                     41,8

                     ‘m’

                     320

                     34,7

                     ‘m’

                     321

                     28,7

                     ‘m’

                     322

                     25,2

                     ‘m’

                     323

                     43

                     24,8

                     324

                     38,7

                     0

                     325

                     48,1

                     31,9

                     326

                     40,3

                     61

                     327

                     42,4

                     52,1

                     328

                     46,4

                     47,7

                     329

                     46,9

                     30,7

                     330

                     46,1

                     23,1

                     331

                     45,7

                     23,2

                     332

                     45,5

                     31,9

                     333

                     46,4

                     73,6

                     334

                     51,3

                     60,7

                     335

                     51,3

                     51,1

                     336

                     53,2

                     46,8

                     337

                     53,9

                     50

                     338

                     53,4

                     52,1

                     339

                     53,8

                     45,7

                     340

                     50,6

                     22,1

                     341

                     47,8

                     26

                     342

                     41,6

                     17,8

                     343

                     38,7

                     29,8

                     344

                     35,9

                     71,6

                     345

                     34,6

                     47,3

                     346

                     34,8

                     80,3

                     347

                     35,9

                     87,2

                     348

                     38,8

                     90,8

                     349

                     41,5

                     94,7

                     350

                     47,1

                     99,2

                     351

                     53,1

                     99,7

                     352

                     46,4

                     0

                     353

                     42,5

                     0,7

                     354

                     43,6

                     58,6

                     355

                     47,1

                     87,5

                     356

                     54,1

                     99,5

                     357

                     62,9

                     99

                     358

                     72,6

                     99,6

                     359

                     82,4

                     99,5

                     360

                     88

                     99,4

                     361

                     46,4

                     0

                     362

                     53,4

                     95,2

                     363

                     58,4

                     99,2

                     364

                     61,5

                     99

                     365

                     64,8

                     99

                     366

                     68,1

                     99,2

                     367

                     73,4

                     99,7

                     368

                     73,3

                     29,8

                     369

                     73,5

                     14,6

                     370

                     68,3

                     0

                     371

                     45,4

                     49,9

                     372

                     47,2

                     75,7

                     373

                     44,5

                     9

                     374

                     47,8

                     10,3

                     375

                     46,8

                     15,9

                     376

                     46,9

                     12,7

                     377

                     46,8

                     8,9

                     378

                     46,1

                     6,2

                     379

                     46,1

                     ‘m’

                     380

                     45,5

                     ‘m’

                     381

                     44,7

                     ‘m’

                     382

                     43,8

                     ‘m’

                     383

                     41

                     ‘m’

                     384

                     41,1

                     6,4

                     385

                     38

                     6,3

                     386

                     35,9

                     0,3

                     387

                     33,5

                     0

                     388

                     53,1

                     48,9

                     389

                     48,3

                     ‘m’

                     390

                     49,9

                     ‘m’

                     391

                     48

                     ‘m’

                     392

                     45,3

                     ‘m’

                     393

                     41,6

                     3,1

                     394

                     44,3

                     79

                     395

                     44,3

                     89,5

                     396

                     43,4

                     98,8

                     397

                     44,3

                     98,9

                     398

                     43

                     98,8

                     399

                     42,2

                     98,8

                     400

                     42,7

                     98,8

                     401

                     45

                     99

                     402

                     43,6

                     98,9

                     403

                     42,2

                     98,8

                     404

                     44,8

                     99

                     405

                     43,4

                     98,8

                     406

                     45

                     99

                     407

                     42,2

                     54,3

                     408

                     61,2

                     31,9

                     409

                     56,3

                     72,3

                     410

                     59,7

                     99,1

                     411

                     62,3

                     99

                     412

                     67,9

                     99,2

                     413

                     69,5

                     99,3

                     414

                     73,1

                     99,7

                     415

                     77,7

                     99,8

                     416

                     79,7

                     99,7

                     417

                     82,5

                     99,5

                     418

                     85,3

                     99,4

                     419

                     86,6

                     99,4

                     420

                     89,4

                     99,4

                     421

                     62,2

                     0

                     422

                     52,7

                     96,4

                     423

                     50,2

                     99,8

                     424

                     49,3

                     99,6

                     425

                     52,2

                     99,8

                     426

                     51,3

                     100

                     427

                     51,3

                     100

                     428

                     51,1

                     100

                     429

                     51,1

                     100

                     430

                     51,8

                     99,9

                     431

                     51,3

                     100

                     432

                     51,1

                     100

                     433

                     51,3

                     100

                     434

                     52,3

                     99,8

                     435

                     52,9

                     99,7

                     436

                     53,8

                     99,6

                     437

                     51,7

                     99,9

                     438

                     53,5

                     99,6

                     439

                     52

                     99,8

                     440

                     51,7

                     99,9

                     441

                     53,2

                     99,7

                     442

                     54,2

                     99,5

                     443

                     55,2

                     99,4

                     444

                     53,8

                     99,6

                     445

                     53,1

                     99,7

                     446

                     55

                     99,4

                     447

                     57

                     99,2

                     448

                     61,5

                     99

                     449

                     59,4

                     5,7

                     450

                     59

                     0

                     451

                     57,3

                     59,8

                     452

                     64,1

                     99

                     453

                     70,9

                     90,5

                     454

                     58

                     0

                     455

                     41,5

                     59,8

                     456

                     44,1

                     92,6

                     457

                     46,8

                     99,2

                     458

                     47,2

                     99,3

                     459

                     51

                     100

                     460

                     53,2

                     99,7

                     461

                     53,1

                     99,7

                     462

                     55,9

                     53,1

                     463

                     53,9

                     13,9

                     464

                     52,5

                     ‘m’

                     465

                     51,7

                     ‘m’

                     466

                     51,5

                     52,2

                     467

                     52,8

                     80

                     468

                     54,9

                     95

                     469

                     57,3

                     99,2

                     470

                     60,7

                     99,1

                     471

                     62,4

                     ‘m’

                     472

                     60,1

                     ‘m’

                     473

                     53,2

                     ‘m’

                     474

                     44

                     ‘m’

                     475

                     35,2

                     ‘m’

                     476

                     30,5

                     ‘m’

                     477

                     26,5

                     ‘m’

                     478

                     22,5

                     ‘m’

                     479

                     20,4

                     ‘m’

                     480

                     19,1

                     ‘m’

                     481

                     19,1

                     ‘m’

                     482

                     13,4

                     ‘m’

                     483

                     6,7

                     ‘m’

                     484

                     3,2

                     ‘m’

                     485

                     14,3

                     63,8

                     486

                     34,1

                     0

                     487

                     23,9

                     75,7

                     488

                     31,7

                     79,2

                     489

                     32,1

                     19,4

                     490

                     35,9

                     5,8

                     491

                     36,6

                     0,8

                     492

                     38,7

                     ‘m’

                     493

                     38,4

                     ‘m’

                     494

                     39,4

                     ‘m’

                     495

                     39,7

                     ‘m’

                     496

                     40,5

                     ‘m’

                     497

                     40,8

                     ‘m’

                     498

                     39,7

                     ‘m’

                     499

                     39,2

                     ‘m’

                     500

                     38,7

                     ‘m’

                     501

                     32,7

                     ‘m’

                     502

                     30,1

                     ‘m’

                     503

                     21,9

                     ‘m’

                     504

                     12,8

                     0

                     505

                     0

                     0

                     506

                     0

                     0

                     507

                     0

                     0

                     508

                     0

                     0

                     509

                     0

                     0

                     510

                     0

                     0

                     511

                     0

                     0

                     512

                     0

                     0

                     513

                     0

                     0

                     514

                     30,5

                     25,6

                     515

                     19,7

                     56,9

                     516

                     16,3

                     45,1

                     517

                     27,2

                     4,6

                     518

                     21,7

                     1,3

                     519

                     29,7

                     28,6

                     520

                     36,6

                     73,7

                     521

                     61,3

                     59,5

                     522

                     40,8

                     0

                     523

                     36,6

                     27,8

                     524

                     39,4

                     80,4

                     525

                     51,3

                     88,9

                     526

                     58,5

                     11,1

                     527

                     60,7

                     ‘m’

                     528

                     54,5

                     ‘m’

                     529

                     51,3

                     ‘m’

                     530

                     45,5

                     ‘m’

                     531

                     40,8

                     ‘m’

                     532

                     38,9

                     ‘m’

                     533

                     36,6

                     ‘m’

                     534

                     36,1

                     72,7

                     535

                     44,8

                     78,9

                     536

                     51,6

                     91,1

                     537

                     59,1

                     99,1

                     538

                     66

                     99,1

                     539

                     75,1

                     99,9

                     540

                     81

                     8

                     541

                     39,1

                     0

                     542

                     53,8

                     89,7

                     543

                     59,7

                     99,1

                     544

                     64,8

                     99

                     545

                     70,6

                     96,1

                     546

                     72,6

                     19,6

                     547

                     72

                     6,3

                     548

                     68,9

                     0,1

                     549

                     67,7

                     ‘m’

                     550

                     66,8

                     ‘m’

                     551

                     64,3

                     16,9

                     552

                     64,9

                     7

                     553

                     63,6

                     12,5

                     554

                     63

                     7,7

                     555

                     64,4

                     38,2

                     556

                     63

                     11,8

                     557

                     63,6

                     0

                     558

                     63,3

                     5

                     559

                     60,1

                     9,1

                     560

                     61

                     8,4

                     561

                     59,7

                     0,9

                     562

                     58,7

                     ‘m’

                     563

                     56

                     ‘m’

                     564

                     53,9

                     ‘m’

                     565

                     52,1

                     ‘m’

                     566

                     49,9

                     ‘m’

                     567

                     46,4

                     ‘m’

                     568

                     43,6

                     ‘m’

                     569

                     40,8

                     ‘m’

                     570

                     37,5

                     ‘m’

                     571

                     27,8

                     ‘m’

                     572

                     17,1

                     0,6

                     573

                     12,2

                     0,9

                     574

                     11,5

                     1,1

                     575

                     8,7

                     0,5

                     576

                     8

                     0,9

                     577

                     5,3

                     0,2

                     578

                     4

                     0

                     579

                     3,9

                     0

                     580

                     0

                     0

                     581

                     0

                     0

                     582

                     0

                     0

                     583

                     0

                     0

                     584

                     0

                     0

                     585

                     0

                     0

                     586

                     0

                     0

                     587

                     8,7

                     22,8

                     588

                     16,2

                     49,4

                     589

                     23,6

                     56

                     590

                     21,1

                     56,1

                     591

                     23,6

                     56

                     592

                     46,2

                     68,8

                     593

                     68,4

                     61,2

                     594

                     58,7

                     ‘m’

                     595

                     31,6

                     ‘m’

                     596

                     19,9

                     8,8

                     597

                     32,9

                     70,2

                     598

                     43

                     79

                     599

                     57,4

                     98,9

                     600

                     72,1

                     73,8

                     601

                     53

                     0

                     602

                     48,1

                     86

                     603

                     56,2

                     99

                     604

                     65,4

                     98,9

                     605

                     72,9

                     99,7

                     606

                     67,5

                     ‘m’

                     607

                     39

                     ‘m’

                     608

                     41,9

                     38,1

                     609

                     44,1

                     80,4

                     610

                     46,8

                     99,4

                     611

                     48,7

                     99,9

                     612

                     50,5

                     99,7

                     613

                     52,5

                     90,3

                     614

                     51

                     1,8

                     615

                     50

                     ‘m’

                     616

                     49,1

                     ‘m’

                     617

                     47

                     ‘m’

                     618

                     43,1

                     ‘m’

                     619

                     39,2

                     ‘m’

                     620

                     40,6

                     0,5

                     621

                     41,8

                     53,4

                     622

                     44,4

                     65,1

                     623

                     48,1

                     67,8

                     624

                     53,8

                     99,2

                     625

                     58,6

                     98,9

                     626

                     63,6

                     98,8

                     627

                     68,5

                     99,2

                     628

                     72,2

                     89,4

                     629

                     77,1

                     0

                     630

                     57,8

                     79,1

                     631

                     60,3

                     98,8

                     632

                     61,9

                     98,8

                     633

                     63,8

                     98,8

                     634

                     64,7

                     98,9

                     635

                     65,4

                     46,5

                     636

                     65,7

                     44,5

                     637

                     65,6

                     3,5

                     638

                     49,1

                     0

                     639

                     50,4

                     73,1

                     640

                     50,5

                     ‘m’

                     641

                     51

                     ‘m’

                     642

                     49,4

                     ‘m’

                     643

                     49,2

                     ‘m’

                     644

                     48,6

                     ‘m’

                     645

                     47,5

                     ‘m’

                     646

                     46,5

                     ‘m’

                     647

                     46

                     11,3

                     648

                     45,6

                     42,8

                     649

                     47,1

                     83

                     650

                     46,2

                     99,3

                     651

                     47,9

                     99,7

                     652

                     49,5

                     99,9

                     653

                     50,6

                     99,7

                     654

                     51

                     99,6

                     655

                     53

                     99,3

                     656

                     54,9

                     99,1

                     657

                     55,7

                     99

                     658

                     56

                     99

                     659

                     56,1

                     9,3

                     660

                     55,6

                     ‘m’

                     661

                     55,4

                     ‘m’

                     662

                     54,9

                     51,3

                     663

                     54,9

                     59,8

                     664

                     54

                     39,3

                     665

                     53,8

                     ‘m’

                     666

                     52

                     ‘m’

                     667

                     50,4

                     ‘m’

                     668

                     50,6

                     0

                     669

                     49,3

                     41,7

                     670

                     50

                     73,2

                     671

                     50,4

                     99,7

                     672

                     51,9

                     99,5

                     673

                     53,6

                     99,3

                     674

                     54,6

                     99,1

                     675

                     56

                     99

                     676

                     55,8

                     99

                     677

                     58,4

                     98,9

                     678

                     59,9

                     98,8

                     679

                     60,9

                     98,8

                     680

                     63

                     98,8

                     681

                     64,3

                     98,9

                     682

                     64,8

                     64

                     683

                     65,9

                     46,5

                     684

                     66,2

                     28,7

                     685

                     65,2

                     1,8

                     686

                     65

                     6,8

                     687

                     63,6

                     53,6

                     688

                     62,4

                     82,5

                     689

                     61,8

                     98,8

                     690

                     59,8

                     98,8

                     691

                     59,2

                     98,8

                     692

                     59,7

                     98,8

                     693

                     61,2

                     98,8

                     694

                     62,2

                     49,4

                     695

                     62,8

                     37,2

                     696

                     63,5

                     46,3

                     697

                     64,7

                     72,3

                     698

                     64,7

                     72,3

                     699

                     65,4

                     77,4

                     700

                     66,1

                     69,3

                     701

                     64,3

                     ‘m’

                     702

                     64,3

                     ‘m’

                     703

                     63

                     ‘m’

                     704

                     62,2

                     ‘m’

                     705

                     61,6

                     ‘m’

                     706

                     62,4

                     ‘m’

                     707

                     62,2

                     ‘m’

                     708

                     61

                     ‘m’

                     709

                     58,7

                     ‘m’

                     710

                     55,5

                     ‘m’

                     711

                     51,7

                     ‘m’

                     712

                     49,2

                     ‘m’

                     713

                     48,8

                     40,4

                     714

                     47,9

                     ‘m’

                     715

                     46,2

                     ‘m’

                     716

                     45,6

                     9,8

                     717

                     45,6

                     34,5

                     718

                     45,5

                     37,1

                     719

                     43,8

                     ‘m’

                     720

                     41,9

                     ‘m’

                     721

                     41,3

                     ‘m’

                     722

                     41,4

                     ‘m’

                     723

                     41,2

                     ‘m’

                     724

                     41,8

                     ‘m’

                     725

                     41,8

                     ‘m’

                     726

                     43,2

                     17,4

                     727

                     45

                     29

                     728

                     44,2

                     ‘m’

                     729

                     43,9

                     ‘m’

                     730

                     38

                     10,7

                     731

                     56,8

                     ‘m’

                     732

                     57,1

                     ‘m’

                     733

                     52

                     ‘m’

                     734

                     44,4

                     ‘m’

                     735

                     40,2

                     ‘m’

                     736

                     39,2

                     16,5

                     737

                     38,9

                     73,2

                     738

                     39,9

                     89,8

                     739

                     42,3

                     98,6

                     740

                     43,7

                     98,8

                     741

                     45,5

                     99,1

                     742

                     45,6

                     99,2

                     743

                     48,1

                     99,7

                     744

                     49

                     100

                     745

                     49,8

                     99,9

                     746

                     49,8

                     99,9

                     747

                     51,9

                     99,5

                     748

                     52,3

                     99,4

                     749

                     53,3

                     99,3

                     750

                     52,9

                     99,3

                     751

                     54,3

                     99,2

                     752

                     55,5

                     99,1

                     753

                     56,7

                     99

                     754

                     61,7

                     98,8

                     755

                     64,3

                     47,4

                     756

                     64,7

                     1,8

                     757

                     66,2

                     ‘m’

                     758

                     49,1

                     ‘m’

                     759

                     52,1

                     46

                     760

                     52,6

                     61

                     761

                     52,9

                     0

                     762

                     52,3

                     20,4

                     763

                     54,2

                     56,7

                     764

                     55,4

                     59,8

                     765

                     56,1

                     49,2

                     766

                     56,8

                     33,7

                     767

                     57,2

                     96

                     768

                     58,6

                     98,9

                     769

                     59,5

                     98,8

                     770

                     61,2

                     98,8

                     771

                     62,1

                     98,8

                     772

                     62,7

                     98,8

                     773

                     62,8

                     98,8

                     774

                     64

                     98,9

                     775

                     63,2

                     46,3

                     776

                     62,4

                     ‘m’

                     777

                     60,3

                     ‘m’

                     778

                     58,7

                     ‘m’

                     779

                     57,2

                     ‘m’

                     780

                     56,1

                     ‘m’

                     781

                     56

                     9,3

                     782

                     55,2

                     26,3

                     783

                     54,8

                     42,8

                     784

                     55,7

                     47,1

                     785

                     56,6

                     52,4

                     786

                     58

                     50,3

                     787

                     58,6

                     20,6

                     788

                     58,7

                     ‘m’

                     789

                     59,3

                     ‘m’

                     790

                     58,6

                     ‘m’

                     791

                     60,5

                     9,7

                     792

                     59,2

                     9,6

                     793

                     59,9

                     9,6

                     794

                     59,6

                     9,6

                     795

                     59,9

                     6,2

                     796

                     59,9

                     9,6

                     797

                     60,5

                     13,1

                     798

                     60,3

                     20,7

                     799

                     59,9

                     31

                     800

                     60,5

                     42

                     801

                     61,5

                     52,5

                     802

                     60,9

                     51,4

                     803

                     61,2

                     57,7

                     804

                     62,8

                     98,8

                     805

                     63,4

                     96,1

                     806

                     64,6

                     45,4

                     807

                     64,1

                     5

                     808

                     63

                     3,2

                     809

                     62,7

                     14,9

                     810

                     63,5

                     35,8

                     811

                     64,1

                     73,3

                     812

                     64,3

                     37,4

                     813

                     64,1

                     21

                     814

                     63,7

                     21

                     815

                     62,9

                     18

                     816

                     62,4

                     32,7

                     817

                     61,7

                     46,2

                     818

                     59,8

                     45,1

                     819

                     57,4

                     43,9

                     820

                     54,8

                     42,8

                     821

                     54,3

                     65,2

                     822

                     52,9

                     62,1

                     823

                     52,4

                     30,6

                     824

                     50,4

                     ‘m’

                     825

                     48,6

                     ‘m’

                     826

                     47,9

                     ‘m’

                     827

                     46,8

                     ‘m’

                     828

                     46,9

                     9,4

                     829

                     49,5

                     41,7

                     830

                     50,5

                     37,8

                     831

                     52,3

                     20,4

                     832

                     54,1

                     30,7

                     833

                     56,3

                     41,8

                     834

                     58,7

                     26,5

                     835

                     57,3

                     ‘m’

                     836

                     59

                     ‘m’

                     837

                     59,8

                     ‘m’

                     838

                     60,3

                     ‘m’

                     839

                     61,2

                     ‘m’

                     840

                     61,8

                     ‘m’

                     841

                     62,5

                     ‘m’

                     842

                     62,4

                     ‘m’

                     843

                     61,5

                     ‘m’

                     844

                     63,7

                     ‘m’

                     845

                     61,9

                     ‘m’

                     846

                     61,6

                     29,7

                     847

                     60,3

                     ‘m’

                     848

                     59,2

                     ‘m’

                     849

                     57,3

                     ‘m’

                     850

                     52,3

                     ‘m’

                     851

                     49,3

                     ‘m’

                     852

                     47,3

                     ‘m’

                     853

                     46,3

                     38,8

                     854

                     46,8

                     35,1

                     855

                     46,6

                     ‘m’

                     856

                     44,3

                     ‘m’

                     857

                     43,1

                     ‘m’

                     858

                     42,4

                     2,1

                     859

                     41,8

                     2,4

                     860

                     43,8

                     68,8

                     861

                     44,6

                     89,2

                     862

                     46

                     99,2

                     863

                     46,9

                     99,4

                     864

                     47,9

                     99,7

                     865

                     50,2

                     99,8

                     866

                     51,2

                     99,6

                     867

                     52,3

                     99,4

                     868

                     53

                     99,3

                     869

                     54,2

                     99,2

                     870

                     55,5

                     99,1

                     871

                     56,7

                     99

                     872

                     57,3

                     98,9

                     873

                     58

                     98,9

                     874

                     60,5

                     31,1

                     875

                     60,2

                     ‘m’

                     876

                     60,3

                     ‘m’

                     877

                     60,5

                     6,3

                     878

                     61,4

                     19,3

                     879

                     60,3

                     1,2

                     880

                     60,5

                     2,9

                     881

                     61,2

                     34,1

                     882

                     61,6

                     13,2

                     883

                     61,5

                     16,4

                     884

                     61,2

                     16,4

                     885

                     61,3

                     ‘m’

                     886

                     63,1

                     ‘m’

                     887

                     63,2

                     4,8

                     888

                     62,3

                     22,3

                     889

                     62

                     38,5

                     890

                     61,6

                     29,6

                     891

                     61,6

                     26,6

                     892

                     61,8

                     28,1

                     893

                     62

                     29,6

                     894

                     62

                     16,3

                     895

                     61,1

                     ‘m’

                     896

                     61,2

                     ‘m’

                     897

                     60,7

                     19,2

                     898

                     60,7

                     32,5

                     899

                     60,9

                     17,8

                     900

                     60,1

                     19,2

                     901

                     59,3

                     38,2

                     902

                     59,9

                     45

                     903

                     59,4

                     32,4

                     904

                     59,2

                     23,5

                     905

                     59,5

                     40,8

                     906

                     58,3

                     ‘m’

                     907

                     58,2

                     ‘m’

                     908

                     57,6

                     ‘m’

                     909

                     57,1

                     ‘m’

                     910

                     57

                     0,6

                     911

                     57

                     26,3

                     912

                     56,5

                     29,2

                     913

                     56,3

                     20,5

                     914

                     56,1

                     ‘m’

                     915

                     55,2

                     ‘m’

                     916

                     54,7

                     17,5

                     917

                     55,2

                     29,2

                     918

                     55,2

                     29,2

                     919

                     55,9

                     16

                     920

                     55,9

                     26,3

                     921

                     56,1

                     36,5

                     922

                     55,8

                     19

                     923

                     55,9

                     9,2

                     924

                     55,8

                     21,9

                     925

                     56,4

                     42,8

                     926

                     56,4

                     38

                     927

                     56,4

                     11

                     928

                     56,4

                     35,1

                     929

                     54

                     7,3

                     930

                     53,4

                     5,4

                     931

                     52,3

                     27,6

                     932

                     52,1

                     32

                     933

                     52,3

                     33,4

                     934

                     52,2

                     34,9

                     935

                     52,8

                     60,1

                     936

                     53,7

                     69,7

                     937

                     54

                     70,7

                     938

                     55,1

                     71,7

                     939

                     55,2

                     46

                     940

                     54,7

                     12,6

                     941

                     52,5

                     0

                     942

                     51,8

                     24,7

                     943

                     51,4

                     43,9

                     944

                     50,9

                     71,1

                     945

                     51,2

                     76,8

                     946

                     50,3

                     87,5

                     947

                     50,2

                     99,8

                     948

                     50,9

                     100

                     949

                     49,9

                     99,7

                     950

                     50,9

                     100

                     951

                     49,8

                     99,7

                     952

                     50,4

                     99,8

                     953

                     50,4

                     99,8

                     954

                     49,7

                     99,7

                     955

                     51

                     100

                     956

                     50,3

                     99,8

                     957

                     50,2

                     99,8

                     958

                     49,9

                     99,7

                     959

                     50,9

                     100

                     960

                     50

                     99,7

                     961

                     50,2

                     99,8

                     962

                     50,2

                     99,8

                     963

                     49,9

                     99,7

                     964

                     50,4

                     99,8

                     965

                     50,2

                     99,8

                     966

                     50,3

                     99,8

                     967

                     49,9

                     99,7

                     968

                     51,1

                     100

                     969

                     50,6

                     99,9

                     970

                     49,9

                     99,7

                     971

                     49,6

                     99,6

                     972

                     49,4

                     99,6

                     973

                     49

                     99,5

                     974

                     49,8

                     99,7

                     975

                     50,9

                     100

                     976

                     50,4

                     99,8

                     977

                     49,8

                     99,7

                     978

                     49,1

                     99,5

                     979

                     50,4

                     99,8

                     980

                     49,8

                     99,7

                     981

                     49,3

                     99,5

                     982

                     49,1

                     99,5

                     983

                     49,9

                     99,7

                     984

                     49,1

                     99,5

                     985

                     50,4

                     99,8

                     986

                     50,9

                     100

                     987

                     51,4

                     99,9

                     988

                     51,5

                     99,9

                     989

                     52,2

                     99,7

                     990

                     52,8

                     74,1

                     991

                     53,3

                     46

                     992

                     53,6

                     36,4

                     993

                     53,4

                     33,5

                     994

                     53,9

                     58,9

                     995

                     55,2

                     73,8

                     996

                     55,8

                     52,4

                     997

                     55,7

                     9,2

                     998

                     55,8

                     2,2

                     999

                     56,4

                     33,6

                     1000

                     55,4

                     ‘m’

                     1001

                     55,2

                     ‘m’

                     1002

                     55,8

                     26,3

                     1003

                     55,8

                     23,3

                     1004

                     56,4

                     50,2

                     1005

                     57,6

                     68,3

                     1006

                     58,8

                     90,2

                     1007

                     59,9

                     98,9

                     1008

                     62,3

                     98,8

                     1009

                     63,1

                     74,4

                     1010

                     63,7

                     49,4

                     1011

                     63,3

                     9,8

                     1012

                     48

                     0

                     1013

                     47,9

                     73,5

                     1014

                     49,9

                     99,7

                     1015

                     49,9

                     48,8

                     1016

                     49,6

                     2,3

                     1017

                     49,9

                     ‘m’

                     1018

                     49,3

                     ‘m’

                     1019

                     49,7

                     47,5

                     1020

                     49,1

                     ‘m’

                     1021

                     49,4

                     ‘m’

                     1022

                     48,3

                     ‘m’

                     1023

                     49,4

                     ‘m’

                     1024

                     48,5

                     ‘m’

                     1025

                     48,7

                     ‘m’

                     1026

                     48,7

                     ‘m’

                     1027

                     49,1

                     ‘m’

                     1028

                     49

                     ‘m’

                     1029

                     49,8

                     ‘m’

                     1030

                     48,7

                     ‘m’

                     1031

                     48,5

                     ‘m’

                     1032

                     49,3

                     31,3

                     1033

                     49,7

                     45,3

                     1034

                     48,3

                     44,5

                     1035

                     49,8

                     61

                     1036

                     49,4

                     64,3

                     1037

                     49,8

                     64,4

                     1038

                     50,5

                     65,6

                     1039

                     50,3

                     64,5

                     1040

                     51,2

                     82,9

                     1041

                     50,5

                     86

                     1042

                     50,6

                     89

                     1043

                     50,4

                     81,4

                     1044

                     49,9

                     49,9

                     1045

                     49,1

                     20,1

                     1046

                     47,9

                     24

                     1047

                     48,1

                     36,2

                     1048

                     47,5

                     34,5

                     1049

                     46,9

                     30,3

                     1050

                     47,7

                     53,5

                     1051

                     46,9

                     61,6

                     1052

                     46,5

                     73,6

                     1053

                     48

                     84,6

                     1054

                     47,2

                     87,7

                     1055

                     48,7

                     80

                     1056

                     48,7

                     50,4

                     1057

                     47,8

                     38,6

                     1058

                     48,8

                     63,1

                     1059

                     47,4

                     5

                     1060

                     47,3

                     47,4

                     1061

                     47,3

                     49,8

                     1062

                     46,9

                     23,9

                     1063

                     46,7

                     44,6

                     1064

                     46,8

                     65,2

                     1065

                     46,9

                     60,4

                     1066

                     46,7

                     61,5

                     1067

                     45,5

                     ‘m’

                     1068

                     45,5

                     ‘m’

                     1069

                     44,2

                     ‘m’

                     1070

                     43

                     ‘m’

                     1071

                     42,5

                     ‘m’

                     1072

                     41

                     ‘m’

                     1073

                     39,9

                     ‘m’

                     1074

                     39,9

                     38,2

                     1075

                     40,1

                     48,1

                     1076

                     39,9

                     48

                     1077

                     39,4

                     59,3

                     1078

                     43,8

                     19,8

                     1079

                     52,9

                     0

                     1080

                     52,8

                     88,9

                     1081

                     53,4

                     99,5

                     1082

                     54,7

                     99,3

                     1083

                     56,3

                     99,1

                     1084

                     57,5

                     99

                     1085

                     59

                     98,9

                     1086

                     59,8

                     98,9

                     1087

                     60,1

                     98,9

                     1088

                     61,8

                     48,3

                     1089

                     61,8

                     55,6

                     1090

                     61,7

                     59,8

                     1091

                     62

                     55,6

                     1092

                     62,3

                     29,6

                     1093

                     62

                     19,3

                     1094

                     61,3

                     7,9

                     1095

                     61,1

                     19,2

                     1096

                     61,2

                     43

                     1097

                     61,1

                     59,7

                     1098

                     61,1

                     98,8

                     1099

                     61,3

                     98,8

                     1100

                     61,3

                     26,6

                     1101

                     60,4

                     ‘m’

                     1102

                     58,8

                     ‘m’

                     1103

                     57,7

                     ‘m’

                     1104

                     56

                     ‘m’

                     1105

                     54,7

                     ‘m’

                     1106

                     53,3

                     ‘m’

                     1107

                     52,6

                     23,2

                     1108

                     53,4

                     84,2

                     1109

                     53,9

                     99,4

                     1110

                     54,9

                     99,3

                     1111

                     55,8

                     99,2

                     1112

                     57,1

                     99

                     1113

                     56,5

                     99,1

                     1114

                     58,9

                     98,9

                     1115

                     58,7

                     98,9

                     1116

                     59,8

                     98,9

                     1117

                     61

                     98,8

                     1118

                     60,7

                     19,2

                     1119

                     59,4

                     ‘m’

                     1120

                     57,9

                     ‘m’

                     1121

                     57,6

                     ‘m’

                     1122

                     56,3

                     ‘m’

                     1123

                     55

                     ‘m’

                     1124

                     53,7

                     ‘m’

                     1125

                     52,1

                     ‘m’

                     1126

                     51,1

                     ‘m’

                     1127

                     49,7

                     25,8

                     1128

                     49,1

                     46,1

                     1129

                     48,7

                     46,9

                     1130

                     48,2

                     46,7

                     1131

                     48

                     70

                     1132

                     48

                     70

                     1133

                     47,2

                     67,6

                     1134

                     47,3

                     67,6

                     1135

                     46,6

                     74,7

                     1136

                     47,4

                     13

                     1137

                     46,3

                     ‘m’

                     1138

                     45,4

                     ‘m’

                     1139

                     45,5

                     24,8

                     1140

                     44,8

                     73,8

                     1141

                     46,6

                     99

                     1142

                     46,3

                     98,9

                     1143

                     48,5

                     99,4

                     1144

                     49,9

                     99,7

                     1145

                     49,1

                     99,5

                     1146

                     49,1

                     99,5

                     1147

                     51

                     100

                     1148

                     51,5

                     99,9

                     1149

                     50,9

                     100

                     1150

                     51,6

                     99,9

                     1151

                     52,1

                     99,7

                     1152

                     50,9

                     100

                     1153

                     52,2

                     99,7

                     1154

                     51,5

                     98,3

                     1155

                     51,5

                     47,2

                     1156

                     50,8

                     78,4

                     1157

                     50,3

                     83

                     1158

                     50,3

                     31,7

                     1159

                     49,3

                     31,3

                     1160

                     48,8

                     21,5

                     1161

                     47,8

                     59,4

                     1162

                     48,1

                     77,1

                     1163

                     48,4

                     87,6

                     1164

                     49,6

                     87,5

                     1165

                     51

                     81,4

                     1166

                     51,6

                     66,7

                     1167

                     53,3

                     63,2

                     1168

                     55,2

                     62

                     1169

                     55,7

                     43,9

                     1170

                     56,4

                     30,7

                     1171

                     56,8

                     23,4

                     1172

                     57

                     ‘m’

                     1173

                     57,6

                     ‘m’

                     1174

                     56,9

                     ‘m’

                     1175

                     56,4

                     4

                     1176

                     57

                     23,4

                     1177

                     56,4

                     41,7

                     1178

                     57

                     49,2

                     1179

                     57,7

                     56,6

                     1180

                     58,6

                     56,6

                     1181

                     58,9

                     64

                     1182

                     59,4

                     68,2

                     1183

                     58,8

                     71,4

                     1184

                     60,1

                     71,3

                     1185

                     60,6

                     79,1

                     1186

                     60,7

                     83,3

                     1187

                     60,7

                     77,1

                     1188

                     60

                     73,5

                     1189

                     60,2

                     55,5

                     1190

                     59,7

                     54,4

                     1191

                     59,8

                     73,3

                     1192

                     59,8

                     77,9

                     1193

                     59,8

                     73,9

                     1194

                     60

                     76,5

                     1195

                     59,5

                     82,3

                     1196

                     59,9

                     82,8

                     1197

                     59,8

                     65,8

                     1198

                     59

                     48,6

                     1199

                     58,9

                     62,2

                     1200

                     59,1

                     70,4

                     1201

                     58,9

                     62,1

                     1202

                     58,4

                     67,4

                     1203

                     58,7

                     58,9

                     1204

                     58,3

                     57,7

                     1205

                     57,5

                     57,8

                     1206

                     57,2

                     57,6

                     1207

                     57,1

                     42,6

                     1208

                     57

                     70,1

                     1209

                     56,4

                     59,6

                     1210

                     56,7

                     39

                     1211

                     55,9

                     68,1

                     1212

                     56,3

                     79,1

                     1213

                     56,7

                     89,7

                     1214

                     56

                     89,4

                     1215

                     56

                     93,1

                     1216

                     56,4

                     93,1

                     1217

                     56,7

                     94,4

                     1218

                     56,9

                     94,8

                     1219

                     57

                     94,1

                     1220

                     57,7

                     94,3

                     1221

                     57,5

                     93,7

                     1222

                     58,4

                     93,2

                     1223

                     58,7

                     93,2

                     1224

                     58,2

                     93,7

                     1225

                     58,5

                     93,1

                     1226

                     58,8

                     86,2

                     1227

                     59

                     72,9

                     1228

                     58,2

                     59,9

                     1229

                     57,6

                     8,5

                     1230

                     57,1

                     47,6

                     1231

                     57,2

                     74,4

                     1232

                     57

                     79,1

                     1233

                     56,7

                     67,2

                     1234

                     56,8

                     69,1

                     1235

                     56,9

                     71,3

                     1236

                     57

                     77,3

                     1237

                     57,4

                     78,2

                     1238

                     57,3

                     70,6

                     1239

                     57,7

                     64

                     1240

                     57,5

                     55,6

                     1241

                     58,6

                     49,6

                     1242

                     58,2

                     41,1

                     1243

                     58,8

                     40,6

                     1244

                     58,3

                     21,1

                     1245

                     58,7

                     24,9

                     1246

                     59,1

                     24,8

                     1247

                     58,6

                     ‘m’

                     1248

                     58,8

                     ‘m’

                     1249

                     58,8

                     ‘m’

                     1250

                     58,7

                     ‘m’

                     1251

                     59,1

                     ‘m’

                     1252

                     59,1

                     ‘m’

                     1253

                     59,4

                     ‘m’

                     1254

                     60,6

                     2,6

                     1255

                     59,6

                     ‘m’

                     1256

                     60,1

                     ‘m’

                     1257

                     60,6

                     ‘m’

                     1258

                     59,6

                     4,1

                     1259

                     60,7

                     7,1

                     1260

                     60,5

                     ‘m’

                     1261

                     59,7

                     ‘m’

                     1262

                     59,6

                     ‘m’

                     1263

                     59,8

                     ‘m’

                     1264

                     59,6

                     4,9

                     1265

                     60,1

                     5,9

                     1266

                     59,9

                     6,1

                     1267

                     59,7

                     ‘m’

                     1268

                     59,6

                     ‘m’

                     1269

                     59,7

                     22

                     1270

                     59,8

                     10,3

                     1271

                     59,9

                     10

                     1272

                     60,6

                     6,2

                     1273

                     60,5

                     7,3

                     1274

                     60,2

                     14,8

                     1275

                     60,6

                     8,2

                     1276

                     60,6

                     5,5

                     1277

                     61

                     14,3

                     1278

                     61

                     12

                     1279

                     61,3

                     34,2

                     1280

                     61,2

                     17,1

                     1281

                     61,5

                     15,7

                     1282

                     61

                     9,5

                     1283

                     61,1

                     9,2

                     1284

                     60,5

                     4,3

                     1285

                     60,2

                     7,8

                     1286

                     60,2

                     5,9

                     1287

                     60,2

                     5,3

                     1288

                     59,9

                     4,6

                     1289

                     59,4

                     21,5

                     1290

                     59,6

                     15,8

                     1291

                     59,3

                     10,1

                     1292

                     58,9

                     9,4

                     1293

                     58,8

                     9

                     1294

                     58,9

                     35,4

                     1295

                     58,9

                     30,7

                     1296

                     58,9

                     25,9

                     1297

                     58,7

                     22,9

                     1298

                     58,7

                     24,4

                     1299

                     59,3

                     61

                     1300

                     60,1

                     56

                     1301

                     60,5

                     50,6

                     1302

                     59,5

                     16,2

                     1303

                     59,7

                     50

                     1304

                     59,7

                     31,4

                     1305

                     60,1

                     43,1

                     1306

                     60,8

                     38,4

                     1307

                     60,9

                     40,2

                     1308

                     61,3

                     49,7

                     1309

                     61,8

                     45,9

                     1310

                     62

                     45,9

                     1311

                     62,2

                     45,8

                     1312

                     62,6

                     46,8

                     1313

                     62,7

                     44,3

                     1314

                     62,9

                     44,4

                     1315

                     63,1

                     43,7

                     1316

                     63,5

                     46,1

                     1317

                     63,6

                     40,7

                     1318

                     64,3

                     49,5

                     1319

                     63,7

                     27

                     1320

                     63,8

                     15

                     1321

                     63,6

                     18,7

                     1322

                     63,4

                     8,4

                     1323

                     63,2

                     8,7

                     1324

                     63,3

                     21,6

                     1325

                     62,9

                     19,7

                     1326

                     63

                     22,1

                     1327

                     63,1

                     20,3

                     1328

                     61,8

                     19,1

                     1329

                     61,6

                     17,1

                     1330

                     61

                     0

                     1331

                     61,2

                     22

                     1332

                     60,8

                     40,3

                     1333

                     61,1

                     34,3

                     1334

                     60,7

                     16,1

                     1335

                     60,6

                     16,6

                     1336

                     60,5

                     18,5

                     1337

                     60,6

                     29,8

                     1338

                     60,9

                     19,5

                     1339

                     60,9

                     22,3

                     1340

                     61,4

                     35,8

                     1341

                     61,3

                     42,9

                     1342

                     61,5

                     31

                     1343

                     61,3

                     19,2

                     1344

                     61

                     9,3

                     1345

                     60,8

                     44,2

                     1346

                     60,9

                     55,3

                     1347

                     61,2

                     56

                     1348

                     60,9

                     60,1

                     1349

                     60,7

                     59,1

                     1350

                     60,9

                     56,8

                     1351

                     60,7

                     58,1

                     1352

                     59,6

                     78,4

                     1353

                     59,6

                     84,6

                     1354

                     59,4

                     66,6

                     1355

                     59,3

                     75,5

                     1356

                     58,9

                     49,6

                     1357

                     59,1

                     75,8

                     1358

                     59

                     77,6

                     1359

                     59

                     67,8

                     1360

                     59

                     56,7

                     1361

                     58,8

                     54,2

                     1362

                     58,9

                     59,6

                     1363

                     58,9

                     60,8

                     1364

                     59,3

                     56,1

                     1365

                     58,9

                     48,5

                     1366

                     59,3

                     42,9

                     1367

                     59,4

                     41,4

                     1368

                     59,6

                     38,9

                     1369

                     59,4

                     32,9

                     1370

                     59,3

                     30,6

                     1371

                     59,4

                     30

                     1372

                     59,4

                     25,3

                     1373

                     58,8

                     18,6

                     1374

                     59,1

                     18

                     1375

                     58,5

                     10,6

                     1376

                     58,8

                     10,5

                     1377

                     58,5

                     8,2

                     1378

                     58,7

                     13,7

                     1379

                     59,1

                     7,8

                     1380

                     59,1

                     6

                     1381

                     59,1

                     6

                     1382

                     59,4

                     13,1

                     1383

                     59,7

                     22,3

                     1384

                     60,7

                     10,5

                     1385

                     59,8

                     9,8

                     1386

                     60,2

                     8,8

                     1387

                     59,9

                     8,7

                     1388

                     61

                     9,1

                     1389

                     60,6

                     28,2

                     1390

                     60,6

                     22

                     1391

                     59,6

                     23,2

                     1392

                     59,6

                     19

                     1393

                     60,6

                     38,4

                     1394

                     59,8

                     41,6

                     1395

                     60

                     47,3

                     1396

                     60,5

                     55,4

                     1397

                     60,9

                     58,7

                     1398

                     61,3

                     37,9

                     1399

                     61,2

                     38,3

                     1400

                     61,4

                     58,7

                     1401

                     61,3

                     51,3

                     1402

                     61,4

                     71,1

                     1403

                     61,1

                     51

                     1404

                     61,5

                     56,6

                     1405

                     61

                     60,6

                     1406

                     61,1

                     75,4

                     1407

                     61,4

                     69,4

                     1408

                     61,6

                     69,9

                     1409

                     61,7

                     59,6

                     1410

                     61,8

                     54,8

                     1411

                     61,6

                     53,6

                     1412

                     61,3

                     53,5

                     1413

                     61,3

                     52,9

                     1414

                     61,2

                     54,1

                     1415

                     61,3

                     53,2

                     1416

                     61,2

                     52,2

                     1417

                     61,2

                     52,3

                     1418

                     61

                     48

                     1419

                     60,9

                     41,5

                     1420

                     61

                     32,2

                     1421

                     60,7

                     22

                     1422

                     60,7

                     23,3

                     1423

                     60,8

                     38,8

                     1424

                     61

                     40,7

                     1425

                     61

                     30,6

                     1426

                     61,3

                     62,6

                     1427

                     61,7

                     55,9

                     1428

                     62,3

                     43,4

                     1429

                     62,3

                     37,4

                     1430

                     62,3

                     35,7

                     1431

                     62,8

                     34,4

                     1432

                     62,8

                     31,5

                     1433

                     62,9

                     31,7

                     1434

                     62,9

                     29,9

                     1435

                     62,8

                     29,4

                     1436

                     62,7

                     28,7

                     1437

                     61,5

                     14,7

                     1438

                     61,9

                     17,2

                     1439

                     61,5

                     6,1

                     1440

                     61

                     9,9

                     1441

                     60,9

                     4,8

                     1442

                     60,6

                     11,1

                     1443

                     60,3

                     6,9

                     1444

                     60,8

                     7

                     1445

                     60,2

                     9,2

                     1446

                     60,5

                     21,7

                     1447

                     60,2

                     22,4

                     1448

                     60,7

                     31,6

                     1449

                     60,9

                     28,9

                     1450

                     59,6

                     21,7

                     1451

                     60,2

                     18

                     1452

                     59,5

                     16,7

                     1453

                     59,8

                     15,7

                     1454

                     59,6

                     15,7

                     1455

                     59,3

                     15,7

                     1456

                     59

                     7,5

                     1457

                     58,8

                     7,1

                     1458

                     58,7

                     16,5

                     1459

                     59,2

                     50,7

                     1460

                     59,7

                     60,2

                     1461

                     60,4

                     44

                     1462

                     60,2

                     35,3

                     1463

                     60,4

                     17,1

                     1464

                     59,9

                     13,5

                     1465

                     59,9

                     12,8

                     1466

                     59,6

                     14,8

                     1467

                     59,4

                     15,9

                     1468

                     59,4

                     22

                     1469

                     60,4

                     38,4

                     1470

                     59,5

                     38,8

                     1471

                     59,3

                     31,9

                     1472

                     60,9

                     40,8

                     1473

                     60,7

                     39

                     1474

                     60,9

                     30,1

                     1475

                     61

                     29,3

                     1476

                     60,6

                     28,4

                     1477

                     60,9

                     36,3

                     1478

                     60,8

                     30,5

                     1479

                     60,7

                     26,7

                     1480

                     60,1

                     4,7

                     1481

                     59,9

                     0

                     1482

                     60,4

                     36,2

                     1483

                     60,7

                     32,5

                     1484

                     59,9

                     3,1

                     1485

                     59,7

                     ‘m’

                     1486

                     59,5

                     ‘m’

                     1487

                     59,2

                     ‘m’

                     1488

                     58,8

                     0,6

                     1489

                     58,7

                     ‘m’

                     1490

                     58,7

                     ‘m’

                     1491

                     57,9

                     ‘m’

                     1492

                     58,2

                     ‘m’

                     1493

                     57,6

                     ‘m’

                     1494

                     58,3

                     9,5

                     1495

                     57,2

                     6

                     1496

                     57,4

                     27,3

                     1497

                     58,3

                     59,9

                     1498

                     58,3

                     7,3

                     1499

                     58,8

                     21,7

                     1500

                     58,8

                     38,9

                     1501

                     59,4

                     26,2

                     1502

                     59,1

                     25,5

                     1503

                     59,1

                     26

                     1504

                     59

                     39,1

                     1505

                     59,5

                     52,3

                     1506

                     59,4

                     31

                     1507

                     59,4

                     27

                     1508

                     59,4

                     29,8

                     1509

                     59,4

                     23,1

                     1510

                     58,9

                     16

                     1511

                     59

                     31,5

                     1512

                     58,8

                     25,9

                     1513

                     58,9

                     40,2

                     1514

                     58,8

                     28,4

                     1515

                     58,9

                     38,9

                     1516

                     59,1

                     35,3

                     1517

                     58,8

                     30,3

                     1518

                     59

                     19

                     1519

                     58,7

                     3

                     1520

                     57,9

                     0

                     1521

                     58

                     2,4

                     1522

                     57,1

                     ‘m’

                     1523

                     56,7

                     ‘m’

                     1524

                     56,7

                     5,3

                     1525

                     56,6

                     2,1

                     1526

                     56,8

                     ‘m’

                     1527

                     56,3

                     ‘m’

                     1528

                     56,3

                     ‘m’

                     1529

                     56

                     ‘m’

                     1530

                     56,7

                     ‘m’

                     1531

                     56,6

                     3,8

                     1532

                     56,9

                     ‘m’

                     1533

                     56,9

                     ‘m’

                     1534

                     57,4

                     ‘m’

                     1535

                     57,4

                     ‘m’

                     1536

                     58,3

                     13,9

                     1537

                     58,5

                     ‘m’

                     1538

                     59,1

                     ‘m’

                     1539

                     59,4

                     ‘m’

                     1540

                     59,6

                     ‘m’

                     1541

                     59,5

                     ‘m’

                     1542

                     59,6

                     0,5

                     1543

                     59,3

                     9,2

                     1544

                     59,4

                     11,2

                     1545

                     59,1

                     26,8

                     1546

                     59

                     11,7

                     1547

                     58,8

                     6,4

                     1548

                     58,7

                     5

                     1549

                     57,5

                     ‘m’

                     1550

                     57,4

                     ‘m’

                     1551

                     57,1

                     1,1

                     1552

                     57,1

                     0

                     1553

                     57

                     4,5

                     1554

                     57,1

                     3,7

                     1555

                     57,3

                     3,3

                     1556

                     57,3

                     16,8

                     1557

                     58,2

                     29,3

                     1558

                     58,7

                     12,5

                     1559

                     58,3

                     12,2

                     1560

                     58,6

                     12,7

                     1561

                     59

                     13,6

                     1562

                     59,8

                     21,9

                     1563

                     59,3

                     20,9

                     1564

                     59,7

                     19,2

                     1565

                     60,1

                     15,9

                     1566

                     60,7

                     16,7

                     1567

                     60,7

                     18,1

                     1568

                     60,7

                     40,6

                     1569

                     60,7

                     59,7

                     1570

                     61,1

                     66,8

                     1571

                     61,1

                     58,8

                     1572

                     60,8

                     64,7

                     1573

                     60,1

                     63,6

                     1574

                     60,7

                     83,2

                     1575

                     60,4

                     82,2

                     1576

                     60

                     80,5

                     1577

                     59,9

                     78,7

                     1578

                     60,8

                     67,9

                     1579

                     60,4

                     57,7

                     1580

                     60,2

                     60,6

                     1581

                     59,6

                     72,7

                     1582

                     59,9

                     73,6

                     1583

                     59,8

                     74,1

                     1584

                     59,6

                     84,6

                     1585

                     59,4

                     76,1

                     1586

                     60,1

                     76,9

                     1587

                     59,5

                     84,6

                     1588

                     59,8

                     77,5

                     1589

                     60,6

                     67,9

                     1590

                     59,3

                     47,3

                     1591

                     59,3

                     43,1

                     1592

                     59,4

                     38,3

                     1593

                     58,7

                     38,2

                     1594

                     58,8

                     39,2

                     1595

                     59,1

                     67,9

                     1596

                     59,7

                     60,5

                     1597

                     59,5

                     32,9

                     1598

                     59,6

                     20

                     1599

                     59,6

                     34,4

                     1600

                     59,4

                     23,9

                     1601

                     59,6

                     15,7

                     1602

                     59,9

                     41

                     1603

                     60,5

                     26,3

                     1604

                     59,6

                     14

                     1605

                     59,7

                     21,2

                     1606

                     60,9

                     19,6

                     1607

                     60,1

                     34,3

                     1608

                     59,9

                     27

                     1609

                     60,8

                     25,6

                     1610

                     60,6

                     26,3

                     1611

                     60,9

                     26,1

                     1612

                     61,1

                     38

                     1613

                     61,2

                     31,6

                     1614

                     61,4

                     30,6

                     1615

                     61,7

                     29,6

                     1616

                     61,5

                     28,8

                     1617

                     61,7

                     27,8

                     1618

                     62,2

                     20,3

                     1619

                     61,4

                     19,6

                     1620

                     61,8

                     19,7

                     1621

                     61,8

                     18,7

                     1622

                     61,6

                     17,7

                     1623

                     61,7

                     8,7

                     1624

                     61,7

                     1,4

                     1625

                     61,7

                     5,9

                     1626

                     61,2

                     8,1

                     1627

                     61,9

                     45,8

                     1628

                     61,4

                     31,5

                     1629

                     61,7

                     22,3

                     1630

                     62,4

                     21,7

                     1631

                     62,8

                     21,9

                     1632

                     62,2

                     22,2

                     1633

                     62,5

                     31

                     1634

                     62,3

                     31,3

                     1635

                     62,6

                     31,7

                     1636

                     62,3

                     22,8

                     1637

                     62,7

                     12,6

                     1638

                     62,2

                     15,2

                     1639

                     61,9

                     32,6

                     1640

                     62,5

                     23,1

                     1641

                     61,7

                     19,4

                     1642

                     61,7

                     10,8

                     1643

                     61,6

                     10,2

                     1644

                     61,4

                     ‘m’

                     1645

                     60,8

                     ‘m’

                     1646

                     60,7

                     ‘m’

                     1647

                     61

                     12,4

                     1648

                     60,4

                     5,3

                     1649

                     61

                     13,1

                     1650

                     60,7

                     29,6

                     1651

                     60,5

                     28,9

                     1652

                     60,8

                     27,1

                     1653

                     61,2

                     27,3

                     1654

                     60,9

                     20,6

                     1655

                     61,1

                     13,9

                     1656

                     60,7

                     13,4

                     1657

                     61,3

                     26,1

                     1658

                     60,9

                     23,7

                     1659

                     61,4

                     32,1

                     1660

                     61,7

                     33,5

                     1661

                     61,8

                     34,1

                     1662

                     61,7

                     17

                     1663

                     61,7

                     2,5

                     1664

                     61,5

                     5,9

                     1665

                     61,3

                     14,9

                     1666

                     61,5

                     17,2

                     1667

                     61,1

                     ‘m’

                     1668

                     61,4

                     ‘m’

                     1669

                     61,4

                     8,8

                     1670

                     61,3

                     8,8

                     1671

                     61

                     18

                     1672

                     61,5

                     13

                     1673

                     61

                     3,7

                     1674

                     60,9

                     3,1

                     1675

                     60,9

                     4,7

                     1676

                     60,6

                     4,1

                     1677

                     60,6

                     6,7

                     1678

                     60,6

                     12,8

                     1679

                     60,7

                     11,9

                     1680

                     60,6

                     12,4

                     1681

                     60,1

                     12,4

                     1682

                     60,5

                     12

                     1683

                     60,4

                     11,8

                     1684

                     59,9

                     12,4

                     1685

                     59,6

                     12,4

                     1686

                     59,6

                     9,1

                     1687

                     59,9

                     0

                     1688

                     59,9

                     20,4

                     1689

                     59,8

                     4,4

                     1690

                     59,4

                     3,1

                     1691

                     59,5

                     26,3

                     1692

                     59,6

                     20,1

                     1693

                     59,4

                     35

                     1694

                     60,9

                     22,1

                     1695

                     60,5

                     12,2

                     1696

                     60,1

                     11

                     1697

                     60,1

                     8,2

                     1698

                     60,5

                     6,7

                     1699

                     60

                     5,1

                     1700

                     60

                     5,1

                     1701

                     60

                     9

                     1702

                     60,1

                     5,7

                     1703

                     59,9

                     8,5

                     1704

                     59,4

                     6

                     1705

                     59,5

                     5,5

                     1706

                     59,5

                     14,2

                     1707

                     59,5

                     6,2

                     1708

                     59,4

                     10,3

                     1709

                     59,6

                     13,8

                     1710

                     59,5

                     13,9

                     1711

                     60,1

                     18,9

                     1712

                     59,4

                     13,1

                     1713

                     59,8

                     5,4

                     1714

                     59,9

                     2,9

                     1715

                     60,1

                     7,1

                     1716

                     59,6

                     12

                     1717

                     59,6

                     4,9

                     1718

                     59,4

                     22,7

                     1719

                     59,6

                     22

                     1720

                     60,1

                     17,4

                     1721

                     60,2

                     16,6

                     1722

                     59,4

                     28,6

                     1723

                     60,3

                     22,4

                     1724

                     59,9

                     20

                     1725

                     60,2

                     18,6

                     1726

                     60,3

                     11,9

                     1727

                     60,4

                     11,6

                     1728

                     60,6

                     10,6

                     1729

                     60,8

                     16

                     1730

                     60,9

                     17

                     1731

                     60,9

                     16,1

                     1732

                     60,7

                     11,4

                     1733

                     60,9

                     11,3

                     1734

                     61,1

                     11,2

                     1735

                     61,1

                     25,6

                     1736

                     61

                     14,6

                     1737

                     61

                     10,4

                     1738

                     60,6

                     ‘m’

                     1739

                     60,9

                     ‘m’

                     1740

                     60,8

                     4,8

                     1741

                     59,9

                     ‘m’

                     1742

                     59,8

                     ‘m’

                     1743

                     59,1

                     ‘m’

                     1744

                     58,8

                     ‘m’

                     1745

                     58,8

                     ‘m’

                     1746

                     58,2

                     ‘m’

                     1747

                     58,5

                     14,3

                     1748

                     57,5

                     4,4

                     1749

                     57,9

                     0

                     1750

                     57,8

                     20,9

                     1751

                     58,3

                     9,2

                     1752

                     57,8

                     8,2

                     1753

                     57,5

                     15,3

                     1754

                     58,4

                     38

                     1755

                     58,1

                     15,4

                     1756

                     58,8

                     11,8

                     1757

                     58,3

                     8,1

                     1758

                     58,3

                     5,5

                     1759

                     59

                     4,1

                     1760

                     58,2

                     4,9

                     1761

                     57,9

                     10,1

                     1762

                     58,5

                     7,5

                     1763

                     57,4

                     7

                     1764

                     58,2

                     6,7

                     1765

                     58,2

                     6,6

                     1766

                     57,3

                     17,3

                     1767

                     58

                     11,4

                     1768

                     57,5

                     47,4

                     1769

                     57,4

                     28,8

                     1770

                     58,8

                     24,3

                     1771

                     57,7

                     25,5

                     1772

                     58,4

                     35,5

                     1773

                     58,4

                     29,3

                     1774

                     59

                     33,8

                     1775

                     59

                     18,7

                     1776

                     58,8

                     9,8

                     1777

                     58,8

                     23,9

                     1778

                     59,1

                     48,2

                     1779

                     59,4

                     37,2

                     1780

                     59,6

                     29,1

                     1781

                     50

                     25

                     1782

                     40

                     20

                     1783

                     30

                     15

                     1784

                     20

                     10

                     1785

                     10

                     5

                     1786

                     0

                     0

                     1787

                     0

                     0

                     1788

                     0

                     0

                     1789

                     0

                     0

                     1790

                     0

                     0

                     1791

                     0

                     0

                     1792

                     0

                     0

                     1793

                     0

                     0

                     1794

                     0

                     0

                     1795

                     0

                     0

                     1796

                     0

                     0

                     1797

                     0

                     0

                     1798

                     0

                     0

                     1799

                     0

                     0

                     1800

                     0

                     0

               A graphical display of the ETC dynamometer schedule is shown in Figure 5.

         Appendix 4
         MEASUREMENT AND SAMPLING PROCEDURES
         1.   INTRODUCTION
         Gaseous components, particulates, and smoke emitted by the engine submitted for testing shall be measured by the methods described in Annex V. The respective sections of Annex V describe the recommended analytical systems for the gaseous emissions (Section 1), the recommended particulate dilution and sampling systems (Section 2), and the recommended opacimeters for smoke measurement (Section 3).
         For the ESC, the gaseous components shall be determined in the raw exhaust gas. Optionally, they may be determined in the diluted exhaust gas, if a full flow dilution system is used for particulate determination. Particulates shall be determined with either a partial flow or a full flow dilution system.
         For the ETC, only a full flow dilution system shall be used for determining gaseous and particulate emissions, and is considered the reference system. However, partial flow dilution systems may be approved by the Technical Service, if their equivalency according to Section 6.2 to Annex I is proven, and if a detailed description of the data evaluation and calculation procedures is submitted to the Technical Service.
         2.   DYNAMOMETER AND TEST CELL EQUIPMENT
         The following equipment shall be used for emission tests of engines on engine dynamometers.
         2.1.   Engine dynamometer
         An engine dynamometer shall be used with adequate characteristics to perform the test cycles described in Appendices 1 and 2 to this Annex. The speed measuring system shall have an accuracy of ± 2 % of reading. The torque measuring system shall have an accuracy of ± 3 % of reading in the range > 20 % of full scale, and an accuracy of ± 0,6 % of full scale in the range ≤ 20 % of full scale.
         2.2.   Other instruments
         Measuring instruments for fuel consumption, air consumption, temperature of coolant and lubricant, exhaust gas pressure and intake manifold depression, exhaust gas temperature, air intake temperature, atmospheric pressure, humidity and fuel temperature shall be used, as required. These instruments shall satisfy the requirements given in Table 8:
         Table 8
         Accuracy of measuring instruments

                     Measuring instrument

                     Accuracy

                     Fuel consumption

                     ± 2 % of engine's maximum value

                     Air consumption

                     ± 2 % of engine's maximum value

                     Temperatures ≤ 600 K (327 °C)

                     ± 2 K absolute

                     Temperatures >600 K (327 °C)

                     ± 1 % of reading

                     Atmospheric pressure

                     ± 0,1 kPa absolute

                     Exhaust gas pressure

                     ± 0,2 kPa absolute

                     Intake depression

                     ± 0,05 kPa absolute

                     Other pressures

                     ± 0,1 kPa absolute

                     Relative humidity

                     ± 3 % absolute

                     Absolute humidity

                     ± 5 % of reading

               2.3.   Exhaust gas flow
         For calculation of the emissions in the raw exhaust, it is necessary to know the exhaust gas flow (see Section 4.4 of Appendix 1). For the determination of the exhaust flow either of the following methods may be used:

                     a)

                     direct measurement of the exhaust flow by flow nozzle or equivalent metering system;

                     b)

                     measurement of the air flow and the fuel flow by suitable metering systems and calculation of the exhaust flow by the following equation:
                     GEXHW = GAIRW + GFUEL (for wet exhaust mass)

               The accuracy of exhaust flow determination shall be ± 2,5 % of reading or better.
         2.4.   Diluted exhaust gas flow
         For calculation of the emissions in the diluted exhaust using a full flow dilution system (mandatory for the ETC), it is necessary to know the diluted exhaust gas flow (see Section 4.3 of Appendix 2). The total mass flow rate of the diluted exhaust (GTOTW) or the total mass of the diluted exhaust gas over the cycle (MTOTW) shall be measured with a PDP or CFV (Annex V, Section 2.3.1). The accuracy shall be ± 2 % of reading or better, and shall be determined according to the provisions of Annex III, Appendix 5, Section 2.4.
         3.   DETERMINATION OF THE GASEOUS COMPONENTS
         3.1.   General analyser specifications
         The analysers shall have a measuring range appropriate for the accuracy required to measure the concentrations of the exhaust gas components (Section 3.1.1). It is recommended that the analysers be operated such that the measured concentration falls between 15 % and 100 % of full scale.
         If read-out systems (computers, data loggers) can provide sufficient accuracy and resolution below 15 % of full scale, measurements below 15 % of full scale are also acceptable. In this case, additional calibrations of at least four non-zero nominally equally spaced points are to be made to ensure the accuracy of the calibration curves according to Annex III, Appendix 5, Section 1.5.5.2.
         The electromagnetic compatibility (EMC) of the equipment shall be on a level as to minimise additional errors.
         3.1.1.   Measurement error
         The total measurement error, including the cross sensitivity to other gases (see Annex III, Appendix 5, Section 1.9), shall not exceed ± 5 % of the reading or ± 3,5 % of full scale, whichever is smaller. For concentrations of less than 100 ppm the measurement error shall not exceed ± 4 ppm.
         3.1.2.   Repeatability
         The repeatability, defined as 2,5 times the standard deviation of 10 repetitive responses to a given calibration or span gas, has to be not greater than ± 1 % of full scale concentration for each range used above 155 ppm (or ppmC) or ± 2 % of each range used below 155 ppm (or ppmC).
         3.1.3.   Noise
         The analyser peak-to-peak response to zero and calibration or span gases over any 10 second period shall not exceed 2 % of full scale on all ranges used.
         3.1.4.   Zero drift
         The zero drift during a one hour period shall be less than 2 % of full scale on the lowest range used. The zero response is defined as the mean response, including noise, to a zero gas during a 30 seconds time interval.
         3.1.5.   Span drift
         The span drift during a one hour period shall be less than 2 % of full scale on the lowest range used. Span is defined as the difference between the span response and the zero response. The span response is defined as the mean response, including noise, to a span gas during a 30 seconds time interval.
         3.2.   Gas drying
         The optional gas drying device must have a minimal effect on the concentration of the measured gases. Chemical dryers are not an acceptable method of removing water from the sample.
         3.3.   Analysers
         Sections 3.3.1 to 3.3.4 describe the measurement principles to be used. A detailed description of the measurement systems is given in Annex V. The gases to be measured shall be analysed with the following instruments. For non-linear analysers, the use of linearising circuits is permitted.
         3.3.1.   Carbon monoxide (CO) analysis
         The carbon monoxide analyser shall be of the Non-Dispersive InfraRed (NDIR) absorption type.
         3.3.2.   Carbon dioxide (CO2) analysis
         The carbon dioxide analyser shall be of the Non-Dispersive InfraRed (NDIR) absorption type.
         3.3.3.   Hydrocarbon (HC) analysis
         For diesel and LPG fuelled gas engines, the hydrocarbon analyser shall be of the Heated Flame Ionisation Detector (HFID) type with detector, valves, pipework, etc. heated so as to maintain a gas temperature of 463K ± 10K (190 ± 10 °C). For NG fuelled gas engines, the hydrocarbon analyser may be of the non-heated Flame Ionisation Detector (FID) type depending upon the method used (see Annex V, Section 1.3).
         3.3.4.   Non-methane hydrocarbon (NMHC) analysis (NG fuelled gas engines only)
         Non-methane hydrocarbons shall be determined by either of the following methods:
         3.3.4.1.   Gas chromatographic (GC) method
         Non-methane hydrocarbons shall be determined by subtraction of the methane analysed with a Gas Chromatograph (GC) conditioned at 423 K (150 °C) from the hydrocarbons measured according to Section 3.3.3.
         3.3.4.2.   Non-methane cutter (NMC) method
         The determination of the non-methane fraction shall be performed with a heated NMC operated in line with an FID as per Section 3.3.3 by subtraction of the methane from the hydrocarbons.
         3.3.5.   Oxides of nitrogen (NOx) analysis
         The oxides of nitrogen analyser shall be of the ChemiLuminescent Detector (CLD) or Heated ChemiLuminescent Detector (HCLD) type with a NO2/NO converter, if measured on a dry basis. If measured on a wet basis, a HCLD with converter maintained above 328 K (55 °C) shall be used, provided the water quench check (see Annex III, Appendix 5, Section 1.9.2.2) is satisfied.
         3.4.   Sampling of gaseous emissions
         3.4.1.   Raw exhaust gas (ESC only)
         The gaseous emissions sampling probes must be fitted at least 0,5 m or 3 times the diameter of the exhaust pipe whichever is the larger-upstream of the exit of the exhaust gas system as far as applicable and sufficiently close to the engine as to ensure an exhaust gas temperature of at least 343 K (70 °C) at the probe.
         In the case of a multi-cylinder engine with a branched exhaust manifold, the inlet of the probe shall be located sufficiently far downstream so as to ensure that the sample is representative of the average exhaust emissions from all cylinders. In multi-cylinder engines having distinct groups of manifolds, such as in a ‘Vee’ engine configuration, it is permissible to acquire a sample from each group individually and calculate an average exhaust emission. Other methods which have been shown to correlate with the above methods may be used. For exhaust emission calculation the total exhaust mass flow must be used.
         If the engine is equipped with an exhaust aftertreatment system, the exhaust sample shall be taken downstream of the exhaust aftertreatment system.
         3.4.2.   Diluted exhaust gas (mandatory for ETC, optional for ESC)
         The exhaust pipe between the engine and the full flow dilution system shall conform to the requirements of Annex V, Section 2.3.1, EP.
         The gaseous emissions sample probe(s) shall be installed in the dilution tunnel at a point where the dilution air and exhaust gas are well mixed, and in close proximity to the particulates sampling probe.
         For the ETC, sampling can generally be done in two ways:

                     —

                     the pollutants are sampled into a sampling bag over the cycle and measured after completion of the test;

                     —

                     the pollutants are sampled continuously and integrated over the cycle; this method is mandatory for HC and NOx.

               4.   DETERMINATION OF THE PARTICULATES
         The determination of the particulates requires a dilution system. Dilution may be accomplished by a partial flow dilution system (ESC only) or a full flow dilution system (mandatory for ETC). The flow capacity of the dilution system shall be large enough to completely eliminate water condensation in the dilution and sampling systems, and maintain the temperature of the diluted exhaust gas at or below 325K (52 °C) immediately upstream of the filter holders. Dehumidifying the dilution air before entering the dilution system is permitted, and especially useful if dilution air humidity is high. The temperature of the dilution air shall be 298 K ± 5 K (25 °C ± 5 °C). If the ambient temperature is below 293 K (20 °C), dilution air pre-heating above the upper temperature limit of 303K (30 °C) is recommended. However, the dilution air temperature must not exceed 325 K (52 °C) prior to the introduction of the exhaust in the dilution tunnel.
         The partial flow dilution system has to be designed to split the exhaust stream into two fractions, the smaller one being diluted with air and subsequently used for particulate measurement. For this it is essential that the dilution ratio be determined very accurately. Different splitting methods can be applied, whereby the type of splitting used dictates to a significant degree the sampling hardware and procedures to be used (Annex V, Section 2.2). The particulate sampling probe shall be installed in close proximity to the gaseous emissions sampling probe, and the installation shall comply with the provisions of Section 3.4.1.
         To determine the mass of the particulates, a particulate sampling system, particulate sampling filters, a microgram balance, and a temperature and humidity controlled weighing chamber, are required.
         For particulate sampling, the single filter method shall be applied which uses one pair of filters (see Section 4.1.3) for the whole test cycle. For the ESC, considerable attention must be paid to sampling times and flows during the sampling phase of the test.
         4.1.   Particulate sampling filters
         4.1.1.   Filter specification
         Fluorocarbon coated glass fibre filters or fluorocarbon based membrane filters are required. All filter types shall have a 0,3 μm DOP (di-octylphthalate) collection efficiency of at least 95 % at a gas face velocity between 35 and 80 cm/s.
         4.1.2.   Filter size
         Particulate filters must have a minimum diameter of 47 mm (37 mm stain diameter). Larger diameter filters are acceptable (Section 4.1.5).
         4.1.3.   Primary and back-up filters
         The diluted exhaust shall be sampled by a pair of filters placed in series (one primary and one back-up filter) during the test sequence. The back-up filter shall be located no more than 100 mm downstream of, and shall not be in contact with the primary filter. The filters may be weighed separately or as a pair with the filters placed stain side to stain side.
         4.1.4.   Filter face velocity
         A gas face velocity through the filter of 35 to 80 cm/s shall be achieved. The pressure drop increase between the beginning and the end of the test shall be no more than 25 kPa.
         4.1.5.   Filter loading
         The recommended minimum filter loading shall be 0,5 mg/1 075 mm2 stain area. For the most common filter sizes the values are shown in Table 9.
         Table 9
         Recommended filter loadings

                     Filter diameter

                     Recommended stain

                     Recommended minimum loading

                     (mm)

                     (mm)

                     (mg)

                     47

                     37

                     0,5

                     70

                     60

                     1,3

                     90

                     80

                     2,3

                     110

                     100

                     3,6

               4.2.   Weighing chamber and analytical balance specifications
         4.2.1.   Weighing chamber conditions
         The temperature of the chamber (or room) in which the particulate filters are conditioned and weighed shall be maintained to within 295 K ± 3 K (22 °C ± 3 °C) during all filter conditioning and weighing. The humidity shall be maintained to a dewpoint of 282,5 K ± 3 K (9,5 °C ± 3 °C) and a relative humidity of 45 % ± 8 %.
         4.2.2.   Reference filter weighing
         The chamber (or room) environment shall be free of any ambient contaminants (such as dust) that would settle on the particulate filters during their stabilisation. Disturbances to weighing room specifications as outlined in Section 4.2.1 will be allowed if the duration of the disturbances does not exceed 30 minutes. The weighing room should meet the required specifications prior to personal entrance into the weighing room. At least two unused reference filters or reference filter pairs shall be weighed within 4 hours of, but preferably at the same time as the sample filter (pair) weighings. They shall be the same size and material as the sample filters.
         If the average weight of the reference filters (reference filter pairs) changes between sample filter weighings by more than ± 5 % (± 7,5 % for the filter pair respectively) of the recommended minimum filter loading (Section 4.1.5), then all sample filters shall be discarded and the emissions test repeated.
         If the weighing room stability criteria outlined in Section 4.2.1 is not met, but the reference filter (pair) weighings meet the above criteria, the engine manufacturer has the option of accepting the sample filter weights or voiding the tests, fixing the weighing room control system and rerunning the test.
         4.2.3.   Analytical balance
         The analytical balance used to determine the weights of all filters shall have a precision (standard deviation) of 20 μg and a resolution of 10 μg (1 digit = 10 μg). For filters less than 70 mm diameter, the precision and resolution shall be 2 μg and 1 μg, respectively.
         4.3.   Additional specifications for particulate measurement
         All parts of the dilution system and the sampling system from the exhaust pipe up to the filter holder, which are in contact with raw and diluted exhaust gas, must be designed to minimise deposition or alteration of the particulates. All parts must be made of electrically conductive materials that do not react with exhaust gas components, and must be electrically grounded to prevent electrostatic effects.
         5.   DETERMINATION OF SMOKE
         This section provides specifications for the required and optional test equipment to be used for the ELR test. The smoke shall be measured with an opacimeter having an opacity and a light absorption coefficient readout mode. The opacity readout mode shall only be used for calibration and checking of the opacimeter. The smoke values of the test cycle shall be measured in the light absorption coefficient readout mode.
         5.1.   General requirements
         The ELR requires the use of a smoke measurement and data processing system which includes three functional units. These units may be integrated into a single component or provided as a system of interconnected components. The three functional units are:

                     —

                     an opacimeter meeting the specifications of Annex V, Section 3,

                     —

                     a data processing unit capable of performing the functions described in Annex III, Appendix 1, Section 6,

                     —

                     a printer and/or electronic storage medium to record and output the required smoke values specified in Annex III, Appendix 1, Section 6.3.

               5.2.   Specific requirements
         5.2.1.   Linearity
         The linearity shall be within ± 2 % opacity.
         5.2.2.   Zero drift
         The zero drift during a one hour period shall not exceed ± 1 % opacity.
         5.2.3.   Opacimeter display and range
         For display in opacity, the range shall be 0-100 % opacity, and the readability 0,1 % opacity. For display in light absorption coefficient, the range shall be 0-30 m-1 light absorption coefficient, and the readability 0,01 m-1 light absorption coefficient.
         5.2.4.   Instrument response time
         The physical response time of the opacimeter shall not exceed 0,2 s. The physical response time is the difference between the times when the output of a rapid response receiver reaches 10 and 90 % of the full deviation when the opacity of the gas being measured is changed in less than 0,1 s.
         The electrical response time of the opacimeter shall not exceed 0,05 s. The electrical response time is the difference between the times when the opacimeter output reaches 10 and 90 % of the full scale when the light source is interrupted or completely extinguished in less than 0,01 s.
         5.2.5.   Neutral density filters
         Any neutral density filter used in conjunction with opacimeter calibration, linearity measurements, or setting span shall have its value known to within 1,0 % opacity. The filter's nominal value must be checked for accuracy at least yearly using a reference traceable to a national or international standard.
         Neutral density filters are precision devices and can easily be damaged during use. Handling should be minimised and, when required, should be done with care to avoid scratching or soiling of the filter.

         Appendix 5
         CALIBRATION PROCEDURE
         1.   CALIBRATION OF THE ANALYTICAL INSTRUMENTS
         1.1.   Introduction
         Each analyser shall be calibrated as often as necessary to fulfil the accuracy requirements of this Directive. The calibration method that shall be used is described in this section for the analysers indicated in Annex III, Appendix 4, Section 3 and Annex V, Section 1.
         1.2.   Calibration gases
         The shelf life of all calibration gases must be respected.
         The expiration date of the calibration gases stated by the manufacturer shall be recorded.
         1.2.1.   Pure gases
         The required purity of the gases is defined by the contamination limits given below. The following gases must be available for operation:

                     Purified nitrogen
                     (Contamination ≤ 1 ppm C1, ≤ 1 ppm CO, ≤ 400 ppm CO2, ≤ 0,1 ppm NO)

                     Purified oxygen
                     (Purity > 99,5 % vol O2)

                     Hydrogen-helium mixture
                     (40 ± 2 % hydrogen, balance helium)
                     (Contamination ≤ 1 ppm C1, ≤ 400 ppm CO2)

                     Purified synthetic air
                     (Contamination ≤ 1 ppm C1, ≤ 1 ppm CO, ≤ 400 ppm CO2, ≤ 0,1 ppm NO)
                     (Oxygen content between 18-21 % vol.)

                     Purified propane or CO for the CVS verification

               1.2.2.   Calibration and span gases
         Mixtures of gases having the following chemical compositions shall be available:
         C3H8 and purified synthetic air (see Section 1.2.1);
         CO and purified nitrogen;
         NOx and purified nitrogen (the amount of NO2 contained in this calibration gas must not exceed 5 % of the NO content);
         CO2 and purified nitrogen;
         CH4 and purified synthetic air;
         C2H6 and purified synthetic air.

            Note: Other gas combinations are allowed provided the gases do not react with one another.
         The true concentration of a calibration and span gas must be within ± 2 % of the nominal value. All concentrations of calibration gas shall be given on a volume basis (volume percent or volume ppm).
         The gases used for calibration and span may also be obtained by means of a gas divider, diluting with purified N2 or with purified synthetic air. The accuracy of the mixing device must be such that the concentration of the diluted calibration gases may be determined to within ± 2 %.
         1.3.   Operating procedure for analysers and sampling system
         The operating procedure for analysers shall follow the start-up and operating instructions of the instrument manufacturer. The minimum requirements given in Sections 1.4 to 1.9 shall be included.
         1.4.   Leakage test
         A system leakage test shall be performed. The probe shall be disconnected from the exhaust system and the end plugged. The analyser pump shall be switched on. After an initial stabilisation period all flow meters should read zero. If not, the sampling lines shall be checked and the fault corrected.
         The maximum allowable leakage rate on the vacuum side shall be 0,5 % of the in-use flow rate for the portion of the system being checked. The analyser flows and bypass flows may be used to estimate the in-use flow rates.
         Another method is the introduction of a concentration step change at the beginning of the sampling line by switching from zero to span gas. If after an adequate period of time the reading shows a lower concentration compared to the introduced concentration, this points to calibration or leakage problems.
         1.5.   Calibration procedure
         1.5.1.   Instrument assembly
         The instrument assembly shall be calibrated and calibration curves checked against standard gases. The same gas flow rates shall be used as when sampling exhaust.
         1.5.2.   Warming-up time
         The warming-up time should be according to the recommendations of the manufacturer. If not specified, a minimum of two hours is recommended for warming up the analysers.
         1.5.3.   NDIR and HFID analyser
         The NDIR analyser shall be tuned, as necessary, and the combustion flame of the HFID analyser shall be optimised (Section 1.8.1).
         1.5.4.   Calibration
         Each normally used operating range shall be calibrated.
         Using purified synthetic air (or nitrogen), the CO, CO2, NOx and HC analysers shall be set at zero.
         The appropriate calibration gases shall be introduced to the analysers, the values recorded, and the calibration curve established according to Section 1.5.5.
         The zero setting shall be rechecked and the calibration procedure repeated, if necessary.
         1.5.5.   Establishment of the calibration curve
         1.5.5.1.   General guidelines
         The analyser calibration curve shall be established by at least five calibration points (excluding zero) spaced as uniformly as possible. The highest nominal concentration must be equal to or higher than 90 % of full scale.
         The calibration curve shall be calculated by the method of least squares. If the resulting polynomial degree is greater than 3, the number of calibration points (zero included) must be at least equal to this polynomial degree plus 2.
         The calibration curve must not differ by more than ± 2 % from the nominal value of each calibration point and by more than ± 1 % of full scale at zero.
         From the calibration curve and the calibration points, it is possible to verify that the calibration has been carried out correctly. The different characteristic parameters of the analyser must be indicated, particularly:

                     —

                     the measuring range,

                     —

                     the sensitivity,

                     —

                     the date of carrying out the calibration.

               1.5.5.2.   Calibration below 15 % of full scale
         The analyser calibration curve shall be established by at least 4 additional calibration points (excluding zero) spaced nominally equally below 15 % of full scale.
         The calibration curve is calculated by the method of least squares.
         The calibration curve must not differ by more than ± 4 % from the nominal value of each calibration point and by more than ± 1 % of full scale at zero.
         1.5.5.3.   Alternative methods
         If it can be shown that alternative technology (e.g. computer, electronically controlled range switch, etc.) can give equivalent accuracy, then these alternatives may be used.
         1.6.   Verification of the calibration
         Each normally used operating range shall be checked prior to each analysis in accordance with the following procedure.
         The calibration shall be checked by using a zero gas and a span gas whose nominal value is more than 80 % of full scale of the measuring range.
         If, for the two points considered, the value found does not differ by more than ± 4 % of full scale from the declared reference value, the adjustment parameters may be modified. Should this not be the case, a new calibration curve shall be established in accordance with Section 1.5.5.
         1.7.   Efficiency test of the NOx converter
         The efficiency of the converter used for the conversion of NO2 into NO shall be tested as given in Sections 1.7.1 to 1.7.8 (Figure 6).
         1.7.1.   Test set-up
         Using the test set-up as shown in Figure 6 (see also Annex III, Appendix 4, Section 3.3.5) and the procedure below, the efficiency of converters can be tested by means of an ozonator.
         1.7.2.   Calibration
         The CLD and the HCLD shall be calibrated in the most common operating range following the manufacturer's specifications using zero and span gas (the NO content of which must amount to about 80 % of the operating range and the NO2 concentration of the gas mixture to less than 5 % of the NO concentration). The NOx analyser must be in the NO mode so that the span gas does not pass through the converter. The indicated concentration has to be recorded.
         1.7.3.   Calculation
         The efficiency of the NOx converter is calculated as follows:

         where,

                     a

                     =

                     is the NOx concentration according to Section 1.7.6

                     b

                     =

                     is the NOx concentration according to Section 1.7.7

                     c

                     =

                     is the NO concentration according to Section 1.7.4

                     d

                     =

                     is the NO concentration according to Section 1.7.5

               1.7.4.   Adding of oxygen
         Via a T-fitting, oxygen or zero air is added continuously to the gas flow until the concentration indicated is about 20 % less than the indicated calibration concentration given in Section 1.7.2. (The analyser is in the NO mode). The indicated concentration c shall be recorded. The ozonator is kept deactivated throughout the process.
         1.7.5.   Activation of the ozonator
         The ozonator is now activated to generate enough ozone to bring the NO concentration down to about 20 % (minimum 10 %) of the calibration concentration given in Section 1.7.2. The indicated concentration d shall be recorded. (The analyser is in the NO mode).
         1.7.6.   NOx mode
         The NO analyser is then switched to the NOx mode so that the gas mixture (consisting of NO, NO2, O2 and N2) now passes through the converter. The indicated concentration a shall be recorded. (The analyser is in the NOx mode).
         1.7.7.   Deactivation of the ozonator
         The ozonator is now deactivated. The mixture of gases described in Section 1.7.6 passes through the converter into the detector. The indicated concentration b shall be recorded. (The analyser is in the NOx mode).
         1.7.8.   NO mode
         Switched to NO mode with the ozonator deactivated, the flow of oxygen or synthetic air is also shut off. The NOx reading of the analyser shall not deviate by more than ± 5 % from the value measured according to Section 1.7.2. (The analyser is in the NO mode).
         1.7.9.   Test interval
         The efficiency of the converter must be tested prior to each calibration of the NOx analyser.
         1.7.10.   Efficiency requirement
         The efficiency of the converter shall not be less than 90 %, but a higher efficiency of 95 % is strongly recommended.

            Note: If, with the analyser in the most common range, the ozonator cannot give a reduction from 80 % to 20 % according to Section 1.7.5, then the highest range which will give the reduction shall be used.

         1.8.   Adjustment of the FID
         1.8.1.   Optimisation of the detector response
         The FID must be adjusted as specified by the instrument manufacturer. A propane in air span gas should be used to optimise the response on the most common operating range.
         With the fuel and air flow rates set at the manufacturer's recommendations, a 350 ± 75 ppm C span gas shall be introduced to the analyser. The response at a given fuel flow shall be determined from the difference between the span gas response and the zero gas response. The fuel flow shall be incrementally adjusted above and below the manufacturer's specification. The span and zero response at these fuel flows shall be recorded. The difference between the span and zero response shall be plotted and the fuel flow adjusted to the rich side of the curve.
         1.8.2.   Hydrocarbon response factors
         The analyser shall be calibrated using propane in air and purified synthetic air, according to Section 1.5.
         Response factors shall be determined when introducing an analyser into service and after major service intervals. The response factor (Rf) for a particular hydrocarbon species is the ratio of the FID C1 reading to the gas concentration in the cylinder expressed by ppm C1.
         The concentration of the test gas must be at a level to give a response of approximately 80 % of full scale. The concentration must be known to an accuracy of ± 2 % in reference to a gravimetric standard expressed in volume. In addition, the gas cylinder must be preconditioned for 24 hours at a temperature of 298 K ± 5 K (25 °C ± 5 °C).
         The test gases to be used and the recommended relative response factor ranges are as follows:
         methane and purified synthetic air 1,00 ≤ Rf ≤ 1,15
         propylene and purified synthetic air 0,90 ≤ Rf ≤ 1,10
         toluene and purified synthetic air 0,90 ≤ Rf ≤ 1,10
         These values are relative to the response factor (Rf) of 1,00 for propane and purified synthetic air.
         1.8.3.   Oxygen interference check
         The oxygen interference check shall be determined when introducing an analyser into service and after major service intervals.
         The response factor is defined and shall be determined as described in Section 1.8.2. The test gas to be used and the recommended relative response factor range are as follows:

         This value is relative to the response factor (Rf) of 1,00 for propane and purified synthetic air.
         The FID burner air oxygen concentration must be within ± 1 mole % of the oxygen concentration of the burner air used in the latest oxygen interference check. If the difference is greater, the oxygen interference must be checked and the analyser adjusted, if necessary.
         1.8.4.   Efficiency of the non-methane cutter (NMC, for NG fuelled gas engines only)
         The NMC is used for the removal of the non-methane hydrocarbons from the sample gas by oxidising all hydrocarbons except methane. Ideally, the conversion for methane is 0 %, and for the other hydrocarbons represented by ethane is 100 %. For the accurate measurement of NMHC, the two efficiencies shall be determined and used for the calculation of the NMHC emission mass flow rate (see Annex III, Appendix 2, Section 4.3).
         1.8.4.1.   Methane efficiency
         Methane calibration gas shall be flown through the FID with and without bypassing the NMC and the two concentrations recorded. The efficiency shall be determined as follows:

         where,

                     concw

                     =

                     HC concentration with CH4 flowing through the NMC

                     concw/o

                     =

                     HC concentration with CH4 bypassing the NMC

               1.8.4.2.   Ethane efficiency
         Ethane calibration gas shall be flown through the FID with and without bypassing the NMC and the two concentrations recorded. The efficiency shall be determined as follows

         where,

                     concw

                     =

                     HC concentration with C2H6 flowing through the NMC

                     concw/o

                     =

                     HC concentration with C2H6 bypassing the NMC

               1.9.   Interference effects with CO, CO2, and NOx analysers
         Gases present in the exhaust other than the one being analysed can interfere with the reading in several ways. Positive interference occurs in NDIR instruments where the interfering gas gives the same effect as the gas being measured, but to a lesser degree. Negative interference occurs in NDIR instruments by the interfering gas broadening the absorption band of the measured gas, and in CLD instruments by the interfering gas quenching the radiation. The interference checks in Sections 1.9.1 and 1.9.2 shall be performed prior to an analyser's initial use and after major service intervals.
         1.9.1.   CO analyser interference check
         Water and CO2 can interfere with the CO analyser performance. Therefore, a CO2 span gas having a concentration of 80 to 100 % of full scale of the maximum operating range used during testing shall be bubbled through water at room temperature and the analyser response recorded. The analyser response must not be more than 1 % of full scale for ranges equal to or above 300 ppm or more than 3 ppm for ranges below 300 ppm.
         1.9.2.   NOx analyser quench checks
         The two gases of concern for CLD (and HCLD) analysers are CO2 and water vapour. Quench responses to these gases are proportional to their concentrations, and therefore require test techniques to determine the quench at the highest expected concentrations experienced during testing.
         1.9.2.1.   CO2 quench check
         A CO2 span gas having a concentration of 80 to 100 % of full scale of the maximum operating range shall be passed through the NDIR analyser and the CO2 value recorded as A. It shall then be diluted approximately 50 % with NO span gas and passed through the NDIR and (H)CLD, with the CO2 and NO values recorded as B and C, respectively. The CO2 shall then be shut off and only the NO span gas be passed through the (H)CLD and the NO value recorded as D.
         The quench, which must not be greater than 3 % of full scale, shall be calculated as follows:

         where,

                     A

                     =

                     is the undiluted CO2 concentration measured with NDIR in %

                     B

                     =

                     is the diluted CO2 concentration measured with NDIR in %

                     C

                     =

                     is the diluted NO concentration measured with (H)CLD in ppm

                     D

                     =

                     is the undiluted NO concentration measured with (H)CLD in ppm

               Alternative methods of diluting and quantifying of CO2 and NO span gas values such as dynamic mixing/blending can be used.
         1.9.2.2.   Water quench check
         This check applies to wet gas concentration measurements only. Calculation of water quench must consider dilution of the NO span gas with water vapour and scaling of water vapour concentration of the mixture to that expected during testing.
         A NO span gas having a concentration of 80 to 100 % of full scale of the normal operating range shall be passed through the (H)CLD and the NO value recorded as D. The NO span gas shall then be bubbled through water at room temperature and passed through the (H)CLD and the NO value recorded as C. The analyser's absolute operating pressure and the water temperature shall be determined and recorded as E and F, respectively. The mixture's saturation vapour pressure that corresponds to the bubbler water temperature F shall be determined and recorded as G. The water vapour concentration (H, in %) of the mixture shall be calculated as follows:

         The expected diluted NO span gas (in water vapour) concentration (De) shall be calculated as follows:

         For diesel exhaust, the maximum exhaust water vapour concentration (Hm, in %) expected during testing shall be estimated, under the assumption of a fuel atom H/C ratio of 1,8:1, from the undiluted CO2 span gas concentration (A, as measured in Section 1.9.2.1) as follows:

         The water quench, which must not be greater than 3 %, shall be calculated as follows:

         where,

                     De

                     =

                     is the expected diluted NO concentration in ppm

                     C

                     =

                     is the diluted NO concentration in ppm

                     Hm

                     =

                     is the maximum water vapour concentration in %

                     H

                     =

                     is the actual water vapour concentration in %

            Note: It is important that the NO span gas contains minimal NO2 concentration for this check, since absorption of NO2 in water has not been accounted for in the quench calculations.
         1.10.   Calibration intervals
         The analysers shall be calibrated according to Section 1.5 at least every three months or whenever a system repair or change is made that could influence calibration.
         2.   CALIBRATION OF THE CVS-SYSTEM
         2.1.   General
         The CVS system shall be calibrated by using an accurate flowmeter traceable to national or international standards and a restricting device. The flow through the system shall be measured at different restriction settings, and the control parameters of the system shall be measured and related to the flow.
         Various types of flowmeters may be used, e.g. calibrated venturi, calibrated laminar flowmeter, calibrated turbinemeter.
         2.2.   Calibration of the Positive Displacement Pump (PDP)
         All parameters related to the pump shall be simultaneously measured with the parameters related to the flowmeter which is connected in series with the pump. The calculated flow rate (in m3/min at pump inlet, absolute pressure and temperature) shall be plotted versus a correlation function which is the value of a specific combination of pump parameters. The linear equation which relates the pump flow and the correlation function shall then be determined. If a CVS has a multiple speed drive, the calibration shall be performed for each range used. Temperature stability shall be maintained during calibration.
         2.2.1.   Data analysis
         The air flowrate (Qs) at each restriction setting (minimum six settings) shall be calculated in standard m3/min from the flowmeter data using the manufacturer's prescribed method. The air flow rate shall then be converted to pump flow (V0) in m3/rev at absolute pump inlet temperature and pressure as follows:

         where,

                     Qs

                     =

                     air flow rate at standard conditions (101,3 kPa, 273 K), m3/s

                     T

                     =

                     temperature at pump inlet, K

                     pA

                     =

                     absolute pressure at pump inlet (pB-p1), kPa

                     n

                     =

                     pump speed, rev/s

               To account for the interaction of pressure variations at the pump and the pump slip rate, the correlation function (X0) between pump speed, pressure differential from pump inlet to pump outlet and absolute pump outlet pressure shall be calculated as follows:

         where,

                     Δpp

                     =

                     pressure differential from pump inlet to pump outlet, kPa

                     pA

                     =

                     absolute outlet pressure at pump outlet, kPa

               A linear least-square fit shall be performed to generate the calibration equation as follows:

         D0 and m are the intercept and slope constants, respectively, describing the regression lines.
         For a CVS system with multiple speeds, the calibration curves generated for the different pump flow ranges shall be approximately parallel, and the intercept values (D0) shall increase as the pump flow range decreases.
         The calculated values from the equation shall be within ± 0,5 % of the measured value of V0. Values of m will vary from one pump to another. Particulate influx over time will cause the pump slip to decrease, as reflected by lower values for m. Therefore, calibration shall be performed at pump start-up, after major maintenance, and if the total system verification (Section 2.4) indicates a change of the slip rate.
         2.3.   Calibration of the Critical Flow Venturi (CFV)
         Calibration of the CFV is based upon the flow equation for a critical venturi. Gas flow is a function of inlet pressure and temperature, as shown below:

         where,

                     Kv

                     =

                     calibration coefficient

                     pA

                     =

                     absolute pressure at venturi inlet, kPa

                     T

                     =

                     temperature at venturi inlet, K

               2.3.1.   Data analysis
         The air flowrate (Qs) at each restriction setting (minimum eight settings) shall be calculated in standard m3/min from the flowmeter data using the manufacturer's prescribed method. The calibration coefficient shall be calculated from the calibration data for each setting as follows:

         where,

                     Qs

                     =

                     air flow rate at standard conditions (101,3 kPa, 273 K), m3/s

                     T

                     =

                     temperature at the venturi inlet, K

                     pA

                     =

                     absolute pressure at venturi inlet, kPa

               To determine the range of critical flow, Kv shall be plotted as a function of venturi inlet pressure. For critical (choked) flow, Kv will have a relatively constant value. As pressure decreases (vacuum increases), the venturi becomes unchoked and Kv decreases, which indicates that the CFV is operated outside the permissible range.
         For a minimum of eight points in the region of critical flow, the average Kv and the standard deviation shall be calculated. The standard deviation shall not exceed ± 0,3 % of the average KV.
         2.4.   Total system verification
         The total accuracy of the CVS sampling system and analytical system shall be determined by introducing a known mass of a pollutant gas into the system while it is being operated in the normal manner. The pollutant is analysed, and the mass calculated according to Annex III, Appendix 2, Section 4.3 except in the case of propane where a factor of 0,000472 is used in place of 0,000479 for HC. Either of the following two techniques shall be used.
         2.4.1.   Metering with a critical flow orifice
         A known quantity of pure gas (carbon monoxide or propane) shall be fed into the CVS system through a calibrated critical orifice. If the inlet pressure is high enough, the flow rate, which is adjusted by means of the critical flow orifice, is independent of the orifice outlet pressure (≡ critical flow). The CVS system shall be operated as in a normal exhaust emission test for about 5 to 10 minutes. A gas sample shall be analysed with the usual equipment (sampling bag or integrating method), and the mass of the gas calculated. The mass so determined shall be within ± 3 % of the known mass of the gas injected.
         2.4.2.   Metering by means of a gravimetric technique
         The weight of a small cylinder filled with carbon monoxide or propane shall be determined with a precision of ± 0,01 gram. For about 5 to 10 minutes, the CVS system shall be operated as in a normal exhaust emission test, while carbon monoxide or propane is injected into the system. The quantity of pure gas discharged shall be determined by means of differential weighing. A gas sample shall be analysed with the usual equipment (sampling bag or integrating method), and the mass of the gas calculated. The mass so determined shall be within ± 3 % of the known mass of the gas injected.
         3.   CALIBRATION OF THE PARTICULATE MEASURING SYSTEM
         3.1.   Introduction
         Each component shall be calibrated as often as necessary to fulfil the accuracy requirements of this Directive. The calibration method to be used is described in this section for the components indicated in Annex III, Appendix 4, Section 4 and Annex V, Section 2.
         3.2.   Flow measurement
         The calibration of gas flow meters or flow measurement instrumentation shall be traceable to international and/or national standards. The maximum error of the measured value shall be within ± 2 % of reading.
         If the gas flow is determined by differential flow measurement, the maximum error of the difference shall be such that the accuracy of GEDF is within ± 4 % (see also Annex V, Section 2.2.1, EGA). It can be calculated by taking the Root-Mean-Square of the errors of each instrument.
         3.3.   Checking the partial flow conditions
         The range of the exhaust gas velocity and the pressure oscillations shall be checked and adjusted according to the requirements of Annex V, Section 2.2.1, EP, if applicable.
         3.4.   Calibration intervals
         The flow measurement instrumentation shall be calibrated at least every three months or whenever a system repair or change is made that could influence calibration.
         4.   CALIBRATION OF THE SMOKE MEASUREMENT EQUIPMENT
         4.1.   Introduction
         The opacimeter shall be calibrated as often as necessary to fulfil the accuracy requirements of this Directive. The calibration method to be used is described in this section for the components indicated in Annex III, Appendix 4, Section 5 and Annex V, Section 3.
         4.2.   Calibration procedure
         4.2.1.   Warming-up time
         The opacimeter shall be warmed up and stabilised according to the manufacturer's recommendations. If the opacimeter is equipped with a purge air system to prevent sooting of the instrument optics, this system should also be activated and adjusted according to the manufacturer's recommendations.
         4.2.2.   Establishment of the linearity response
         The linearity of the opacimeter shall be checked in the opacity readout mode as per the manufacturer's recommendations. Three neutral density filters of known transmittance, which shall meet the requirements of Annex III, Appendix 4, Section 5.2.5, shall be introduced to the opacimeter and the value recorded. The neutral density filters shall have nominal opacities of approximately 10 %, 20 % and 40 %.
         The linearity must not differ by more than ± 2 % opacity from the nominal value of the neutral density filter. Any non-linearity exceeding the above value must be corrected prior to the test.
         4.3.   Calibration intervals
         The opacimeter shall be calibrated according to Section 4.2.2 at least every three months or whenever a system repair or change is made that could influence calibration.

      ANNEX IV
      TECHNICAL CHARACTERISTICS OF REFERENCE FUEL PRESCRIBED FOR APPROVAL TESTS AND TO VERIFY CONFORMITY OF PRODUCTION
      DIESEL FUEL (1)

                  Parameter

                  Unit

                  Limits (2)

                  Test method

                  Publication

                  Minimum

                  Maximum

                  Cetane number (3)

                  52

                  54

                  EN-ISO 5165

                  1998 (4)

                  Density at 15 °C

                  kg/m3

                  833

                  837

                  EN-ISO 3675

                  1995

                  Distillation:

                  — 50 % point

                  °C

                  245

                  —

                  EN-ISO 3405

                  1998

                  — 95 % point

                  °C

                  345

                  350

                  EN-ISO 3405

                  1998

                  — final boiling point

                  °C

                  —

                  370

                  EN-ISO 3405

                  1998

                  Flash point

                  °C

                  55

                  —

                  EN 27719

                  1993

                  CFPP

                  °C

                  —

                  - 5

                  EN 116

                  1981

                  Viscosity at 40 °C

                  mm2/s

                  2,5

                  3,5

                  EN-ISO 3104

                  1996

                  Polycyclic aromatic hydrocarbons

                  % m/m

                  3,0

                  6,0

                  IP 391 (7)

                  1995

                  Sulphur content (5)

                  mg/kg

                  —

                  300

                  pr. EN-ISO/DIS 14596

                  1998 (4)

                  Copper corrosion

                  —

                  1

                  EN-ISO 2160

                  1995

                  Conradson carbon residue (10 % DR)

                  % m/m

                  —

                  0,2

                  EN-ISO 10370

                  Ash content

                  % m/m

                  —

                  0,01

                  EN-ISO 6245

                  1995

                  Water content

                  % m/m

                  —

                  0,05

                  EN-ISO 12937

                  1995

                  Neutralisation (strong acid) number

                  mg KOH/g

                  —

                  0,02

                  ASTM D 974-95

                  1998 (4)

                  Oxidation stability (6)

                  mg/ml

                  —

                  0,025

                  EN-ISO 12205

                  1996

                  % m/m

                  —

                  —

                  EN 12916

                  [2000] (4)

            Ethanol for diesel engines (8)

                  Parameter

                  Unit

                  Limits (9)

                  Test method (10)

                  Minimum

                  Maximum

                  Alcohol, mass

                  % m/m

                  92,4

                  —

                  ASTM D 5501

                  Other alcohol than ethanol contained in total alcohol, mass

                  % m/m

                  —

                  2

                  ADTM D 5501

                  Density at 15 °C

                  kg/m3

                  795

                  815

                  ASTM D 4052

                  Ash content

                  % m/m

                  0,001

                  ISO 6245

                  Flash point

                   °C

                  10

                  ISO 2719

                  Acidity, calculated as acetic acid

                  % m/m

                  —

                  0,0025

                  ISO 1388-2

                  Neutralisation (strong acid) number

                  KOH mg/l

                  —

                  1

                  Colour

                  According to scale

                  —

                  10

                  ASTM D 1209

                  Dry residue at 100 °C

                  mg/kg

                  15

                  ISO 759

                  Water content

                  % m/m

                  6,5

                  ISO 760

                  Aldehydes calculated as acetic acid

                  % m/m

                  0,0025

                  ISO 1388-4

                  Sulphur content

                  mg/kg

                  —

                  10

                  ASTM D 5453

                  Esters, calculated as ethylacetate

                  % m/m

                  —

                  0,1

                  ASSTM D 1617

            2.   NATURAL GAS (NG)
      European market fuels are available in two ranges:

                  —

                  the H range, whose extreme reference fuels are GR and G23;

                  —

                  the L range, whose extreme reference fuels are G23 and G25.

            The characteristics of GR, G23 and G25 reference fuels are summarised below:
      Reference fuel GR

                  Characteristics

                  Units

                  Basis

                  Limits

                  Test method

                  Minimum

                  Maximum

                  Composition:

                  Methane

                  87

                  84

                  89

                  Ethane

                  13

                  11

                  15

                  Balance (11)

                  %-mole

                  —

                  —

                  1

                  ISO 6974

                  Sulphur content

                  mg/m3
                      (12)

                  —

                  —

                  10

                  ISO 6326-5

      Reference fuel G23

                  Characteristics

                  Units

                  Basis

                  Limits

                  Test method

                  Minimum

                  Maximum

                  Composition:

                  Methane

                  92,5

                  91,5

                  93,5

                  Balance (13)

                  %-mole

                  —

                  —

                  1

                  ISO 6974

                  N2

                  7,5

                  6,5

                  8,5

                  Sulphur content

                  mg/m3
                      (14)

                  —

                  —

                  10

                  ISO 6326-5

      Reference fuel G25

                  Characteristics

                  Units

                  Basis

                  Limits

                  Test method

                  Minimum

                  Maximum

                  Composition:

                  Methane

                  86

                  84

                  88

                  Balance (15)

                  %-mole

                  —

                  —

                  1

                  ISO 6974

                  N2

                  14

                  12

                  16

                  Sulphur content

                  mg/m3
                      (16)

                  —

                  —

                  10

                  ISO 6326-5

            3.   LIQUEFIED PETROLEUM GAS (LPG)

                  Parameter

                  Unit

                  Limits fuel A

                  Limits fuel B

                  Test method

                  Minimum

                  Maximum

                  Minimum

                  Maximum

                  Motor octane number

                  92,5 (17)

                  92,5

                  EN 589 Annex B

                  Composition

                  C3 content

                  % vol

                  48

                  52

                  83

                  87

                  C4 content

                  % vol

                  48

                  52

                  13

                  17

                  ISO 7941

                  Olefins

                  % vol

                  12

                  14

                  Evaporation residue

                  mg/kg

                  50

                  50

                  NFM 41015

                  Total sulphur content

                  ppm weight (17)

                  50

                  50

                  EN 24260

                  Hydrogen sulphide

                  —

                  None

                  None

                  ISO 8819

                  Copper strip corrosion

                  rating

                  class 1

                  class 1

                  ISO 6251 (18)

                  Water at 0 °C

                  free

                  free

                  Visual inspection

         (1)  If it is required to calculate the thermal efficiency of an engine or vehicle, the calorific value of the fuel can be calculated from:
      Specific energy (calorific value)(net) in MJ/kg = (46,423 - 8,792d2 + 3,170d)(1 - (x + y + s)) + 9,420s - 2,499x
      where,
      d = the density at 15 °C
      x = the proportion by mass of water (% divided by 100)
      y = the proportion by mass of ash (% divided by 100)
      s = the proportion by mass of sulphur (% divided by 100).

         (2)  The values quoted in the specification are ‘true values’. In establishment of their limit values the terms of ISO 4259, Petroleums products — Determination and application of precision data in relation to methods of test, have been applied and in fixing a minimum value, a minimum difference of 2R above zero has been taken into account; in fixing a maximum and minimum value, the minimum difference is 4R (R = reproducibility). Notwithstanding this measure, which is necessary for statistical reasons, the manufacturer of a fuel should nevertheless aim at a zero value where the stipulated maximum value is 2R and at the mean value in the case of quotations of maximum and minimum limits. Should it be necessary to clarify the question as to whether a fuel meets the requirements of the specification, the terms of ISO 4259 should be applied.

         (3)  The range for cetane number is not in accordance with the requirement of a minimum range of 4R. However, in the case of dispute between fuel supplier and fuel user, the terms in ISO 4259 can be used to resolve such disputes provided replicate measurements, of sufficient number to achieve the necessary precision, are made in preference to single determinations.

         (4)  The month of publication will be completed in due course.

         (5)  The actual sulphur content of the fuel used for the test shall be reported. In addition, the sulphur content of the reference fuel used to approve a vehicle or engine against the limit values set out in row B of the Table in Section 6.2.1. of Annex I to this Directive shall have a maximum sulphur content of 50 ppm. The Commission will as soon as possible bring forward a modification to this Annex reflecting the market average for fuel sulphur content in respect of the fuel defined in Annex IV to Directive 98/70/EC.

         (6)  Even though oxidation stability is controlled, it is likely that shelf life will be limited. Advice should be sought from the supplier as to storage conditions and life.

         (7)  New and better method for polycyclic aromatics under development

         (8)  Cetane improver, as specified by the engine manufacturer, may be added to the ethanol fuel. The maximum allowed amount is 10 % m/m.

         (9)  The values quoted in the specification are ‘true values’. In establishment of their limit values the terms of ISO 4259, Petroleum products — Determination and application of precision data in relation to methods of test, have been applied and in fixing a minimum value, a minimum difference of 2R above zero has been taken into account; in fixing a maximum and minimum value, the minimum difference is 4R (R – reproducibility). Notwithstanding this measure, which is necessary for statistical reasons, the manufacturer of a fuel should nevertheless aim at a zero value where the stipulated maximum value is 2R and at the mean value in the case of quotations of maximum and minimum limits. Should it be necessary to clarify the question as to whether a fuel meets the requirements of the specification, the terms of ISO 4259 should be applied.

         (10)  Equivalent ISO methods will be adopted when issued for all properties listed above.

         (11)  Inerts +C2+

         (12)  Value to be determined at standard conditions (293, 2 K (20 °C) and 101, 3 kPa).

         (13)  Inerts (different from N2) +C2+ +C2+.

         (14)  Value to be determined at standard conditions (293,2 K (20 °C) and 101,3 kPa).

         (15)  Inerts (different from N2) +C2+ +C2+.

         (16)  Value to be determined at standard conditions (293,2 K (20 °C) and 101,3 kPa).

         (17)  Value to be determined at standard conditions 293,2 K (20 °C) and 101,3 kPa.

         (18)  This method may not accurately determine the presence of corrosive materials if the sample contains corrosion inhibitors or other chemicals which diminish the corrosivity of the sample to the copper strip. Therefore, the addition of such compounds for the sole purpose of biasing the test method is prohibited.

      ANNEX V
      ANALYTICAL AND SAMPLING SYSTEMS
      1.   DETERMINATION OF THE GASEOUS EMISSIONS
      1.1.   Introduction
      Section 1.2 and Figures 7 and 8 contain detailed descriptions of the recommended sampling and analysing systems. Since various configurations can produce equivalent results, exact conformance with Figures 7 and 8 is not required. Additional components such as instruments, valves, solenoids, pumps, and switches may be used to provide additional information and co-ordinate the functions of the component systems. Other components which are not needed to maintain the accuracy on some systems, may be excluded if their exclusion is based upon good engineering judgement.

      1.2.   Description of the analytical system
      An analytical system for the determination of the gaseous emissions in the raw (Figure 7, ESC only) or diluted (Figure 8, ETC and ESC) exhaust gas is described based on the use of:

                  —

                  HFID analyser for the measurement of hydrocarbons;

                  —

                  NDIR analysers for the measurement of carbon monoxide and carbon dioxide;

                  —

                  HCLD or equivalent analyser for the measurement of the oxides of nitrogen.

            The sample for all components may be taken with one sampling probe or with two sampling probes located in close proximity and internally split to the different analysers. Care must be taken that no condensation of exhaust components (including water and sulphuric acid) occurs at any point of the analytical system.

      1.2.1.   Components of Figures 7 and 8
      EP Exhaust pipe
      Exhaust gas sampling probe (Figure 7 only)
      A stainless steel straight closed end multi-hole probe is recommended. The inside diameter shall not be greater than the inside diameter of the sampling line. The wall thickness of the probe shall not be greater than 1 mm. There shall be a minimum of three holes in three different radial planes sized to sample approximately the same flow. The probe must extend across at least 80 % of the diameter of the exhaust pipe. One or two sampling probes may be used.
      SP2 Diluted exhaust gas HC sampling probe (Figure 8 only)
      The probe shall:

                  —

                  be defined as the first 254 mm to 762 mm of the heated sampling line HSL1;

                  —

                  have a 5 mm minimum inside diameter;

                  —

                  be installed in the dilution tunnel DT (see Section 2.3, Figure 20) at a point where the dilution air and exhaust gas are well mixed (i.e. approximately 10 tunnel diameters downstream of the point where the exhaust enters the dilution tunnel);

                  —

                  be sufficiently distant (radially) from other probes and the tunnel wall so as to be free from the influence of any wakes or eddies;

                  —

                  be heated so as to increase the gas stream temperature to 463 K ± 10 K (190 °C ± 10 °C) at the exit of the probe.

            SP3 Diluted exhaust gas CO, CO2, NOx sampling probe (Figure 8 only)
      The probe shall:

                  —

                  be in the same plane as SP2;

                  —

                  be sufficiently distant (radially) from other probes and the tunnel wall so as to be free from the influence of any wakes or eddies;

                  —

                  be heated and insulated over its entire length to a minimum temperature of 328 K (55 °C) to prevent water condensation.

            HSL1 Heated sampling line
      The sampling line provides a gas sample from a single probe to the split point(s) and the HC analyser.
      The sampling line shall:

                  —

                  have a 5 mm minimum and a 13,5 mm maximum inside diameter;

                  —

                  be made of stainless steel or PTFE;

                  —

                  maintain a wall temperature of 463 K ± 10 K (190 °C ± 10 °C) as measured at every separately controlled heated section, if the temperature of the exhaust gas at the sampling probe is equal to or below 463 K (190 °C);

                  —

                  maintain a wall temperature greater than 453 K (180 °C), if the temperature of the exhaust gas at the sampling probe is above 463 K (190 °C);

                  —

                  maintain a gas temperature of 463 K ± 10 K (190 °C ± 10 °C) immediately before the heated filter F2 and the HFID.

            HSL2 Heated NOx sampling line
      The sampling line shall:

                  —

                  maintain a wall temperature of 328 K to 473 K (55 °C to 200 °C), up to the converter C when using a cooling bath B, and up to the analyser when a cooling bath B is not used,

                  —

                  be made of stainless steel or PTFE.

            SL Sampling line for CO and CO2

      The line shall be made of PTFE or stainless steel. It may be heated or unheated.
      BK Background bag (optional; Figure 8 only)
      For the sampling of the background concentrations.
      BG Sample bag (optional; Figure 8 CO and CO2 only)
      For the sampling of the sample concentrations.
      F1 Heated pre-filter (optional)
      The temperature shall be the same as HSL1.
      F2 Heated filter
      The filter shall extract any solid particles from the gas sample prior to the analyser. The temperature shall be the same as HSL1. The filter shall be changed as needed.
      P Heated sampling pump
      The pump shall be heated to the temperature of HSL1.
      HC
      Heated flame ionisation detector (HFID) for the determination of the hydrocarbons. The temperature shall be kept at 453 K to 473 K (180 °C to 200 °C).
      CO, CO2

      NDIR analysers for the determination of carbon monoxide and carbon dioxide (optional for the determination of the dilution ratio for PT measurement).
      NO
      CLD or HCLD analyser for the determination of the oxides of nitrogen. If a HCLD is used it shall be kept at a temperature of 328 K to 473 K (55 °C to 200 °C).
      C Converter
      A converter shall be used for the catalytic reduction of NO2 to NO prior to analysis in the CLD or HCLD.
      B Cooling bath (optional)
      To cool and condense water from the exhaust sample. The bath shall be maintained at a temperature of 273 K to 277 K (0 °C to 4 °C) by ice or refrigeration. It is optional if the analyser is free from water vapour interference as determined in Annex III, Appendix 5, Sections 1.9.1 and 1.9.2. If water is removed by condensation, the sample gas temperature or dew point shall be monitored either within the water trap or downstream. The sample gas temperature or dew point must not exceed 280 K (7 °C). Chemical dryers are not allowed for removing water from the sample.
      T1, T2, T3 Temperature sensor
      To monitor the temperature of the gas stream.
      T4 Temperature sensor
      To monitor the temperature of the NO2-NO converter.
      T5 Temperature sensor
      To monitor the temperature of the cooling bath.
      G1, G2, G3 Pressure gauge
      To measure the pressure in the sampling lines.
      R1, R2 Pressure regulator
      To control the pressure of the air and the fuel, respectively, for the HFID.
      R3, R4, R5 Pressure regulator
      To control the pressure in the sampling lines and the flow to the analysers.
      FL1, FL2, FL3 Flowmeter
      To monitor the sample by-pass flow rate.
      FL4 to FL6 Flowmeter (optional)
      To monitor the flow rate through the analysers.
      V1 to V5 Selector valve
      Suitable valving for selecting sample, span gas or zero gas flow to the analysers.
      V6, V7 Solenoid valve
      To by-pass the NO2-NO converter.
      V8 Needle valve
      To balance the flow through the NO2-NO converter C and the by-pass.
      V9, V10 Needle valve
      To regulate the flows to the analysers.
      V11, V12 Toggle valve (optional)
      To drain the condensate from the bath B.
      1.3.   NMHC analysis (NG fuelled gas engines only)
      1.3.1.   Gas chromatographic method (GC, Figure 9)
      When using the GC method, a small measured volume of a sample is injected onto an analytical column through which it is swept by an inert carrier gas. The column separates various components according to their boiling points so that they elute from the column at different times. They then pass through a detector which gives an electrical signal that depends on their concentration. Since it is not a continuous analysis technique, it can only be used in conjunction with the bag sampling method as described in Annex III, Appendix 4, Section 3.4.2.
      For NMHC an automated GC with a FID shall be used. The exhaust gas shall be sampled into a sampling bag from which a part shall be taken and injected into the GC. The sample is separated into two parts (CH4/Air/CO and NMHC/CO2/H2O) on the Porapak column. The molecular sieve column separates CH4 from the air and CO before passing it to the FID where its concentration is measured. A complete cycle from injection of one sample to injection of a second can be made in 30 s. To determine NMHC, the CH4 concentration shall be subtracted from the total HC concentration (see Annex III, Appendix 2, Section 4.3.1).
      Figure 9 shows a typical GC assembled to routinely determine CH4. Other GC methods can also be used based on good engineering judgement.

      Components of Figure 9
      PC Porapak column
      Porapak N, 180/300 μm (50/80 mesh), 610 mm length × 2,16 mm ID shall be used and conditioned at least 12 h at 423 K (150 °C) with carrier gas prior to initial use.
      MSC Molecular sieve column
      Type 13X, 250/350 μm (45/60 mesh), 1 220 mm length × 2,16 mm ID shall be used and conditioned at least 12 h at 423 K (150 °C) with carrier gas prior to initial use.
      OV Oven
      To maintain columns and valves at stable temperature for analyser operation, and to condition the columns at 423 K (150 °C).
      SLP Sample loop
      A sufficient length of stainless steel tubing to obtain approximately 1 cm3 volume.
      P Pump
      To bring the sample to the gas chromatograph.
      D Dryer
      A dryer containing a molecular sieve shall be used to remove water and other contaminants which might be present in the carrier gas.
      HC
      Flame ionisation detector (FID) to measure the concentration of methane.
      V1 Sample injection valve
      To inject the sample taken from the sampling bag via SL of Figure 8. It shall be low dead volume, gas tight, and heatable to 423 K (150 C).
      V3 Selector valve
      To select span gas, sample, or no flow.
      V2, V4, V5, V6, V7, V8 Needle valve
      To set the flows in the system.
      R1, R2, R3 Pressure regulator
      To control the flows of the fuel (= carrier gas), the sample, and the air, respectively.
      FC Flow capillary
      To control the rate of air flow to the FID.
      G1, G2, G3 Pressure gauge
      To control the flows of the fuel (= carrier gas), the sample, and the air, respectively.
      F1, F2, F3, F4, F5 Filter
      Sintered metal filters to prevent grit from entering the pump or the instrument.
      FL1
      To measure the sample by-pass flow rate.
      1.3.2.   Non-methane cutter method (NMC, Figure 10)
      The cutter oxidises all hydrocarbons except CH4 to CO2 and H2O, so that by passing the sample through the NMC only CH4 is detected by the FID. If bag sampling is used, a flow diverter system shall be installed at SL (see Section 1.2, Figure 8) with which the flow can be alternatively passed through or around the cutter according to the upper part of Figure 10. For NMHC measurement, both values (HC and CH4) shall be observed on the FID and recorded. If the integration method is used, an NMC in line with a second FID shall be installed parallel to the regular FID into HSL1 (see Section 1.2, Figure 8) according to the lower part of Figure 10. For NMHC measurement, the values of the two FID's (HC and CH4) shall be observed and recorded.
      The cutter shall be characterised at or above 600 K (327 °C) prior to test work with respect to its catalytic effect on CH4 and C2H6 at H2O values representative of exhaust stream conditions. The dewpoint and O2 level of the sampled exhaust stream must be known. The relative response of the FID to CH4 must be recorded (see Annex III, Appendix 5, Section 1.8.2).

      Components of Figure 10
      NMC Non-methane cutter
      To oxidise all hydrocarbons except methane.
      HC
      Heated flame ionisation detector (HFID) to measure the HC and CH4 concentrations. The temperature shall be kept at 453 K to 473 K (180 °C to 200 °C).
      V1 Selector valve
      To select sample, zero and span gas. V1 is identical with V2 of Figure 8.
      V2, V3 Solenoid valve
      To by-pass the NMC.
      V4 Needle valve
      To balance the flow through the NMC and the by-pass.
      R1 Pressure regulator
      To control the pressure in the sampling line and the flow to the HFID. R1 is identical with R3 of Figure 8.
      FL1 Flowmeter
      To measure the sample by-pass flow rate. FL1 is identical with FL1 of Figure 8.
      2.   EXHAUST GAS DILUTION AND DETERMINATION OF THE PARTICULATES
      2.1.   Introduction
      Sections 2.2, 2.3 and 2.4 and Figures 11 to 22 contain detailed descriptions of the recommended dilution and sampling systems. Since various configurations can produce equivalent results, exact conformance with these figures is not required. Additional components such as instruments, valves, solenoids, pumps, and switches may be used to provide additional information and coordinate the functions of the component systems. Other components which are not needed to maintain the accuracy on some systems, may be excluded if their exclusion is based upon good engineering judgement.
      2.2.   Partial flow dilution system
      A dilution system is described in Figures 11 to 19 based upon the dilution of a part of the exhaust stream. Splitting of the exhaust stream and the following dilution process may be done by different dilution system types. For subsequent collection of the particulates, the entire dilute exhaust gas or only a portion of the dilute exhaust gas is passed to the particulate sampling system (Section 2.4, Figure 21). The first method is referred to as total sampling type, the second method as fractional sampling type.
      The calculation of the dilution ratio depends upon the type of system used. The following types are recommended:
      Isokinetic systems (Figures 11, 12)
      With these systems, the flow into the transfer tube is matched to the bulk exhaust flow in terms of gas velocity and/or pressure, thus requiring an undisturbed and uniform exhaust flow at the sampling probe. This is usually achieved by using a resonator and a straight approach tube upstream of the sampling point. The split ratio is then calculated from easily measurable values like tube diameters. It should be noted that isokinesis is only used for matching the flow conditions and not for matching the size distribution. The latter is typically not necessary, as the particles are sufficiently small as to follow the fluid streamlines.
      Flow controlled systems with concentration measurement (Figures 13 to 17)
      With these systems, a sample is taken from the bulk exhaust stream by adjusting the dilution air flow and the total dilute exhaust flow. The dilution ratio is determined from the concentrations of tracer gases, such as CO2 or NOx naturally occurring in the engine exhaust. The concentrations in the dilute exhaust gas and in the dilution air are measured, whereas the concentration in the raw exhaust gas can be either measured directly or determined from fuel flow and the carbon balance equation, if the fuel composition is known. The systems may be controlled by the calculated dilution ratio (Figures 13, 14) or by the flow into the transfer tube (Figures 12, 13, 14).
      Flow controlled systems with flow measurement (Figures 18, 19)
      With these systems, a sample is taken from the bulk exhaust stream by setting the dilution air flow and the total dilute exhaust flow. The dilution ratio is determined from the difference of the two flows rates. Accurate calibration of the flow meters relative to one another is required, since the relative magnitude of the two flow rates can lead to significant errors at higher dilution ratios (of 15 and above). Flow control is very straight forward by keeping the dilute exhaust flow rate constant and varying the dilution air flow rate, if needed.
      When using partial flow dilution systems, attention must be paid to avoiding the potential problems of loss of particulates in the transfer tube, ensuring that a representative sample is taken from the engine exhaust, and determination of the split ratio. The systems described pay attention to these critical areas.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the transfer tube TT by the isokinetic sampling probe ISP. The differential pressure of the exhaust gas between exhaust pipe and inlet to the probe is measured with the pressure transducer DPT. This signal is transmitted to the flow controller FC1 that controls the suction blower SB to maintain a differential pressure of zero at the tip of the probe. Under these conditions, exhaust gas velocities in EP and ISP are identical, and the flow through ISP and TT is a constant fraction (split) of the exhaust gas flow. The split ratio is determined from the cross-sectional areas of EP and ISP. The dilution air flow rate is measured with the flow measurement device FM1. The dilution ratio is calculated from the dilution air flow rate and the split ratio.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the transfer tube TT by the isokinetic sampling probe ISP. The differential pressure of the exhaust gas between exhaust pipe and inlet to the probe is measured with the pressure transducer DPT. This signal is transmitted to the flow controller FC1 that controls the pressure blower PB to maintain a differential pressure of zero at the tip of the probe. This is done by taking a small fraction of the dilution air whose flow rate has already been measured with the flow measurement device FM1, and feeding it to TT by means of a pneumatic orifice. Under these conditions, exhaust gas velocities in EP and ISP are identical, and the flow through ISP and TT is a constant fraction (split) of the exhaust gas flow. The split ratio is determined from the cross sectional areas of EP and ISP. The dilution air is sucked through DT by the suction blower SB, and the flow rate is measured with FM1 at the inlet to DT. The dilution ratio is calculated from the dilution air flow rate and the split ratio.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the sampling probe SP and the transfer tube TT. The concentrations of a tracer gas (CO2 or NOx) are measured in the raw and diluted exhaust gas as well as in the dilution air with the exhaust gas analyser(s) EGA. These signals are transmitted to the flow controller FC2 that controls either the pressure blower PB or the suction blower SB to maintain the desired exhaust split and dilution ratio in DT. The dilution ratio is calculated from the tracer gas concentrations in the raw exhaust gas, the diluted exhaust gas, and the dilution air.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the sampling probe SP and the transfer tube TT. The CO2 concentrations are measured in the diluted exhaust gas and in the dilution air with the exhaust gas analyser(s) EGA. The CO2 and fuel flow GFUEL signals are transmitted either to the flow controller FC2, or to the flow controller FC3 of the particulate sampling system (see Figure 21). FC2 controls the pressure blower PB, FC3 the sampling pump P (see Figure 21), thereby adjusting the flows into and out of the system so as to maintain the desired exhaust split and dilution ratio in DT. The dilution ratio is calculated from the CO2 concentrations and GFUEL using the carbon balance assumption.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the sampling probe SP and the transfer tube TT due to the negative pressure created by the venturi VN in DT. The gas flow rate through TT depends on the momentum exchange at the venturi zone, and is therefore affected by the absolute temperature of the gas at the exit of TT. Consequently, the exhaust split for a given tunnel flow rate is not constant, and the dilution ratio at low load is slightly lower than at high load. The tracer gas concentrations (CO2 or NOx) are measured in the raw exhaust gas, the diluted exhaust gas, and the dilution air with the exhaust gas analyser(s) EGA, and the dilution ratio is calculated from the values so measured.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the sampling probe SP and the transfer tube TT by a flow divider that contains a set of orifices or venturis. The first one (FD1) is located in EP, the second one (FD2) in TT. Additionally, two pressure control valves (PCV1 and PCV2) are necessary to maintain a constant exhaust split by controlling the backpressure in EP and the pressure in DT. PCV1 is located downstream of SP in EP, PCV2 between the pressure blower PB and DT. The tracer gas concentrations (CO2 or NOx) are measured in the raw exhaust gas, the diluted exhaust gas, and the dilution air with the exhaust gas analyser(s) EGA. They are necessary for checking the exhaust split, and may be used to adjust PCV1 and PCV2 for precise split control. The dilution ratio is calculated from the tracer gas concentrations.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the transfer tube TT by the flow divider FD3 that consists of a number of tubes of the same dimensions (same diameter, length and bend radius) installed in EP. The exhaust gas through one of these tubes is lead to DT, and the exhaust gas through the rest of the tubes is passed through the damping chamber DC. Thus, the exhaust split is determined by the total number of tubes. A constant split control requires a differential pressure of zero between DC and the outlet of TT, which is measured with the differential pressure transducer DPT. A differential pressure of zero is achieved by injecting fresh air into DT at the outlet of TT. The tracer gas concentrations (CO2 or NOx) are measured in the raw exhaust gas, the diluted exhaust gas, and the dilution air with the exhaust gas analyser(s) EGA. They are necessary for checking the exhaust split and may be used to control the injection air flow rate for precise split control. The dilution ratio is calculated from the tracer gas concentrations.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the sampling probe SP and the transfer tube TT. The total flow through the tunnel is adjusted with the flow controller FC3 and the sampling pump P of the particulate sampling system (see Figure 18). The dilution air flow is controlled by the flow controller FC2, which may use GEXHW, GAIRW, or GFUEL as command signals, for the desired exhaust split. The sample flow into DT is the difference of the total flow and the dilution air flow. The dilution air flow rate is measured with the flow measurement device FM1, the total flow rate with the flow measurement device FM3 of the particulate sampling system (see Figure 21). The dilution ratio is calculated from these two flow rates.

      Raw exhaust gas is transferred from the exhaust pipe EP to the dilution tunnel DT through the sampling probe SP and the transfer tube TT. The exhaust split and the flow into DT is controlled by the flow controller FC2 that adjusts the flows (or speeds) of the pressure blower PB and the suction blower SB, accordingly. This is possible since the sample taken with the particulate sampling system is returned into DT. GEXHW, GAIRW, or GFUEL may be used as command signals for FC2. The dilution air flow rate is measured with the flow measurement device FM1, the total flow with the flow measurement device FM2. The dilution ratio is calculated from these two flow rates.
      2.2.1.   Components of Figures 11 to 19
      EP Exhaust pipe
      The exhaust pipe may be insulated. To reduce the thermal inertia of the exhaust pipe a thickness to diameter ratio of 0,015 or less is recommended. The use of flexible sections shall be limited to a length to diameter ratio of 12 or less. Bends shall be minimised to reduce inertial deposition. If the system includes a test bed silencer the silencer may also be insulated.
      For an isokinetic system, the exhaust pipe must be free of elbows, bends and sudden diameter changes for at least 6 pipe diameters upstream and 3 pipe diameters downstream of the tip of the probe. The gas velocity at the sampling zone must be higher than 10 m/s except at idle mode. Pressure oscillations of the exhaust gas must not exceed ± 500 Pa on the average. Any steps to reduce pressure oscillations beyond using a chassis-type exhaust system (including silencer and aftertreatment devices) must not alter engine performance nor cause the deposition of particulates.
      For systems without isokinetic probe, it is recommended to have a straight pipe of 6 pipe diameters upstream and 3 pipe diameters downstream of the tip of the probe.
      SP Sampling probe (Figures 10, 14, 15, 16, 18, 19)
      The minimum inside diameter shall be 4 mm. The minimum diameter ratio between exhaust pipe and probe shall be 4. The probe shall be an open tube facing upstream on the exhaust pipe centreline, or a multiple hole probe as described under SP1 in Section 1.2.1, Figure 5.
      ISP Isokinetic sampling probe (Figures 11, 12)
      The isokinetic sampling probe must be installed facing upstream on the exhaust pipe centreline where the flow conditions in section EP are met, and designed to provide a proportional sample of the raw exhaust gas. The minimum inside diameter shall be 12 mm.
      A control system is necessary for isokinetic exhaust splitting by maintaining a differential pressure of zero between EP and ISP. Under these conditions exhaust gas velocities in EP and ISP are identical and the mass flow through ISP is a constant fraction of the exhaust gas flow. ISP has to be connected to a differential pressure transducer DPT. The control to provide a differential pressure of zero between EP and ISP is done with the flow controller FC1.
      FD1, FD2 Flow divider (Figure 16)
      A set of venturis or orifices is installed in the exhaust pipe EP and in the transfer tube TT, respectively, to provide a proportional sample of the raw exhaust gas. A control system consisting of two pressure control valves PCV1 and PCV2 is necessary for proportional splitting by controlling the pressures in EP and DT.
      FD3 Flow divider (Figure 17)
      A set of tubes (multiple tube unit) is installed in the exhaust pipe EP to provide a proportional sample of the raw exhaust gas. One of the tubes feeds exhaust gas to the dilution tunnel DT, whereas the other tubes exit exhaust gas to a damping chamber DC. The tubes must have the same dimensions (same diameter, length, bend radius), so that the exhaust split depends on the total number of tubes. A control system is necessary for proportional splitting by maintaining a differential pressure of zero between the exit of the multiple tube unit into DC and the exit of TT. Under these conditions, exhaust gas velocities in EP and FD3 are proportional, and the flow TT is a constant fraction of the exhaust gas flow. The two points have to be connected to a differential pressure transducer DPT. The control to provide a differential pressure of zero is done with the flow controller FC1.
      EGA Exhaust gas analyser (Figures 13, 14, 15, 16, 17)
      CO2 or NOx analysers may be used (with carbon balance method CO2 only). The analysers shall be calibrated like the analysers for the measurement of the gaseous emissions. One or several analysers may be used to determine the concentration differences. The accuracy of the measuring systems has to be such that the accuracy of GEDFW,i is within ± 4 %.
      TT Transfer tube (Figures 11 to 19)
      The transfer tube shall be:

                  —

                  as short as possible, but not more than 5 m in length,

                  —

                  equal to or greater than the probe diameter, but not more than 25 mm in diameter,

                  —

                  exiting on the centreline of the dilution tunnel and pointing downstream.

            If the tube is 1 meter or less in length, it shall be insulated with material with a maximum thermal conductivity of 0,05 W/m*K with a radial insulation thickness corresponding to the diameter of the probe. If the tube is longer than 1 meter, it must be insulated and heated to a minimum wall temperature of 523 K (250 °C).
      DPT Differential pressure transducer (Figures 11, 12, 17)
      The differential pressure transducer shall have a range of ± 500 Pa or less.
      FC1 Flow controller (Figures 11, 12, 17)
      For isokinetic systems (Figures 11,12), a flow controller is necessary to maintain a differential pressure of zero between EP and ISP. The adjustment can be done by:

                  (a)

                  controlling the speed or flow of the suction blower SB and keeping the speed or flow of the pressure blower PB constant during each mode (Figure 11); or

                  (b)

                  adjusting the suction blower SB to a constant mass flow of the diluted exhaust gas and controlling the flow of the pressure blower PB, and therefore the exhaust sample flow in a region at the end of the transfer tube TT (Figure 12).

            In the case of a pressure controlled system the remaining error in the control loop must not exceed ± 3 Pa. The pressure oscillations in the dilution tunnel must not exceed ± 250 Pa on the average.
      For a multi-tube system (Figure 17), a flow controller is necessary for proportional exhaust splitting to maintain a differential pressure of zero between the exit of the multi-tube unit and the exit of TT. The adjustment is done by controlling the injection air flow rate into DT at the exit of TT.
      PCV1, PCV2 Pressure control valve (Figure 16)
      Two pressure control valves are necessary for the twin venturi/twin orifice system for proportional flow splitting by controlling the backpressure of EP and the pressure in DT. The valves shall be located downstream of SP in EP and between PB and DT.
      DC Damping chamber (Figure 17)
      A damping chamber shall be installed at the exit of the multiple tube unit to minimise the pressure oscillations in the exhaust pipe EP.
      VN Venturi (Figure 15)
      A venturi is installed in the dilution tunnel DT to create a negative pressure in the region of the exit of the transfer tube TT. The gas flow rate through TT is determined by the momentum exchange at the venturi zone, and is basically proportional to the flow rate of the pressure blower PB leading to a constant dilution ratio. Since the momentum exchange is affected by the temperature at the exit of TT and the pressure difference between EP and DT, the actual dilution ratio is slightly lower at low load than at high load.
      FC2 Flow controller (Figures 13, 14, 18, 19, optional)
      A flow controller may be used to control the flow of the pressure blower PB and/or the suction blower SB. It may be connected to the exhaust, intake air, or fuel flow signals and/or to the CO2 or NOx differential signals. When using a pressurised air supply (Figure 18), FC2 directly controls the air flow.
      FM1 Flow measurement device (Figures 11, 12, 18, 19)
      Gas meter or other flow instrumentation to measure the dilution air flow. FM1 is optional if the pressure blower PB is calibrated to measure the flow.
      FM2 Flow measurement device (Figure 19)
      Gas meter or other flow instrumentation to measure the diluted exhaust gas flow. FM2 is optional if the suction blower SB is calibrated to measure the flow.
      PB Pressures blower (Figures 11, 12, 13, 14, 15, 16, 19)
      To control the dilution air flow rate, PB may be connected to the flow controllers FC1 or FC2. PB is not required when using a butterfly valve. PB may be used to to measure the dilution air flow, if calibrated.
      SB Suction blower (Figures 11, 12, 13, 16, 17, 19)
      For fractional sampling systems only. SB may be used to measure the diluted exhaust gas flow, if calibrated.
      DAF Dilution air filter (Figures 11 to 19)
      It is recommended that the dilution air be filtered and charcoal scrubbed to eliminate background hydrocarbons. At the engine manufacturers request the dilution air shall be sampled according to good engineering practice to determine the background particulate levels, which can then be subtracted from the values measured in the diluted exhaust.
      DT Dilution tunnel (Figures 11 to 19)
      The dilution tunnel:

                  —

                  shall be of a sufficient length to cause complete mixing of the exhaust and dilution air under turbulent flow conditions;

                  —

                  shall be constructed of stainless steel with:

                              —

                              thickness/diameter ratio of 0,025 or less for dilution tunnels with inside diameters greater than 75 mm;

                              —

                              a nominal thickness of no less then 1,5 mm for dilution tunnels with inside diameters of equal to or less than 75 mm;

                  —

                  shall be at least 75 mm in diameter for the fractional sampling type;

                  —

                  is recommended to be at least 25 mm in diameter for the total sampling type;

                  —

                  may be heated to no greater than 325 K (52 °C) wall temperature by direct heating or by dilution air pre-heating, provided the air temperature does not exceed 325 K (52 °C) prior to the introduction of the exhaust in the dilution tunnel;

                  —

                  may be insulated.

            The engine exhaust shall be thoroughly mixed with the dilution air. For fractional sampling systems, the mixing quality shall be checked after introduction into service by means of a CO2-profile of the tunnel with the engine running (at least four equally spaced measuring points). If necessary, a mixing orifice may be used.

         Note: If the ambient temperature in the vicinity of the dilution tunnel (DT) is below 293K (20 °C), precautions should be taken to avoid particle losses onto the cool walls of the dilution tunnel. Therefore, heating and/or insulating the tunnel within the limits given above is recommended.
      At high engine loads, the tunnel may be cooled by a non-aggressive means such as a circulating fan, as long as the temperature of the cooling medium is not below 293K (20 °C).
      HE Heat exchanger (Figures 16, 17)
      The heat exchanger shall be of sufficient capacity to maintain the temperature at the inlet to the suction blower SB within ± 11K of the average operating temperature observed during the test.
      2.3.   Full flow dilution system
      A dilution system is described in Figure 20 based upon the dilution of the total exhaust using the CVS (Constant Volume Sampling) concept. The total volume of the mixture of exhaust and dilution air must be measured. Either a PDP or a CFV system may be used.
      For subsequent collection of the particulates, a sample of the dilute exhaust gas is passed to the particulate sampling system (section 2.4, figures 21 and 22). If this is done directly, it is referred to as single dilution. If the sample is diluted once more in the secondary dilution tunnel, it is referred to as double dilution. This is useful, if the filter face temperature requirement cannot be met with single dilution. Although partly a dilution system, the double dilution system is described as a modification of a particulate sampling system in section 2.4, Figure 22, since it shares most of the parts with a typical particulate sampling system.

      The total amount of raw exhaust gas is mixed in the dilution tunnel DT with the dilution air. The diluted exhaust gas flow rate is measured either with a Positive Displacement Pump PDP or with a Critical Flow Venturi CFV. A heat exchanger HE or electronic flow compensation EFC may be used for proportional particulate sampling and for flow determination. Since particulate mass determination is based on the total diluted exhaust gas flow, the dilution ratio is not required to be calculated.
      2.3.1.   Components of Figure 20
      EP Exhaust pipe
      The exhaust pipe length from the exit of the engine exhaust manifold, turbocharger outlet or aftertreatment device to the dilution tunnel shall not exceed 10 m. If the exhaust pipe downstream of the engine exhaust manifold, turbocharger outlet or aftertreatment device exceeds 4 m in length, then all tubing in excess of 4 m shall be insulated, except for an in-line smokemeter, if used. The radial thickness of the insulation must be at least 25 mm. The thermal conductivity of the insulating material must have a value no greater than 0,1 W/mK measured at 673 K (400 °C). To reduce the thermal inertia of the exhaust pipe a thickness to diameter ratio of 0,015 or less is recommended. The use of flexible sections shall be limited to a length to diameter ratio of 12 or less.
      PDP Positive displacement pump
      The PDP meters total diluted exhaust flow from the number of the pump revolutions and the pump displacement. The exhaust system backpressure must not be artificially lowered by the PDP or dilution air inlet system. Static exhaust backpressure measured with the PDP system operating shall remain within ± 1,5 kPa of the static pressure measured without connection to the PDP at identical engine speed and load. The gas mixture temperature immediately ahead of the PDP shall be within ± 6 K of the average operating temperature observed during the test, when no flow compensation is used. Flow compensation may only be used if the temperature at the inlet to the PDP does not exceed 323K (50 °C).
      CFV Critical Flow Venturi
      CFV measures total diluted exhaust flow by maintaining the flow at choked conditions (critical flow). Static exhaust backpressure measured with the CFV system operating shall remain within ± 1,5 kPa of the static pressure measured without connection to the CFV at identical engine speed and load. The gas mixture temperature immediately ahead of the CFV shall be within ± 11 K of the average operating temperature observed during the test, when no flow compensation is used.
      HE Heat exchanger (optional, if EFC is used)
      The heat exchanger shall be of sufficient capacity to maintain the temperature within the limits required above.
      EFC Electronic flow compensation (optional, if HE is used)
      If the temperature at the inlet to either the PDP or CFV is not kept within the limits stated above, a flow compensation system is required for continuous measurement of the flow rate and control of the proportional sampling in the particulate system. To that purpose, the continuously measured flow rate signals are used to correct the sample flow rate through the particulate filters of the particulate sampling system (see Section 2.4, Figures 21, 22), accordingly.
      DT Dilution tunnel
      The dilution tunnel:

                  —

                  shall be small enough in diameter to cause turbulent flow (Reynolds Number greater than 4 000) and of sufficient length to cause complete mixing of the exhaust and dilution air; a mixing orifice may be used;

                  —

                  shall be at least 460 mm in diameter with a single dilution system;

                  —

                  shall be at least 210 mm in diameter with a double dilution system;

                  —

                  may be insulated.

            The engine exhaust shall be directed downstream at the point where it is introduced into the dilution tunnel, and thoroughly mixed.
      When using single dilution, a sample from the dilution tunnel is transferred to the particulate sampling system (Section 2.4, Figure 21). The flow capacity of the PDP or CFV must be sufficient to maintain the diluted exhaust at a temperature of less than or equal to 325 K (52 °C) immediately before the primary particulate filter.
      When using double dilution, a sample from the dilution tunnel is transferred to the secondary dilution tunnel where it is further diluted, and then passed through the sampling filters (Section 2.4, Figure 22). The flow capacity of the PDP or CFV must be sufficient to maintain the diluted exhaust stream in the DT at a temperature of less than or equal to 464 K (191 °C) at the sampling zone. The secondary dilution system must provide sufficient secondary dilution air to maintain the doubly-diluted exhaust stream at a temperature of less than or equal to 325 K (52 °C) immediately before the primary particulate filter.
      DAF Dilution air filter
      It is recommended that the dilution air be filtered and charcoal scrubbed to eliminate background hydrocarbons. At the engine manufacturers request the dilution air shall be sampled according to good engineering practice to determine the background particulate levels, which can then be subtracted from the values measured in the diluted exhaust.
      PSP Particulate sampling probe
      The probe is the leading section of PTT and:

                  —

                  shall be installed facing upstream at a point where the dilution air and exhaust gas are well mixed, i.e. on the dilution tunnel (DT) centreline approximately 10 tunnel diameters downstream of the point where the exhaust enters the dilution tunnel;

                  —

                  shall be of 12 mm minimum inside diameter;

                  —

                  may be heated to no greater than 325 K (52 °C) wall temperature by direct heating or by dilution air pre-heating, provided the air temperature does not exceed 325 K (52 °C) prior to the introduction of the exhaust in the dilution tunnel;

                  —

                  may be insulated.

            2.4.   Particulate sampling system
      The particulate sampling system is required for collecting the particulates on the particulate filter. In the case of total sampling partial flow dilution, which consists of passing the entire diluted exhaust sample through the filters, dilution (Section 2.2, Figures 14, 18) and sampling system usually form an integral unit. In the case of fractional sampling partial flow dilution or full flow dilution, which consists of passing through the filters only a portion of the diluted exhaust, the dilution (Section 2.2, Figures 11, 12, 13, 15, 16, 17, 19; Section 2.3, Figure 20) and sampling systems usually form different units.
      In this Directive, the double dilution system (Figure 22) of a full flow dilution system is considered as a specific modification of a typical particulate sampling system as shown in Figure 21. The double dilution system includes all important parts of the particulate sampling system, like filter holders and sampling pump.
      In order to avoid any impact on the control loops, it is recommended that the sample pump be running throughout the complete test procedure. For the single filter method, a bypass system shall be used for passing the sample through the sampling filters at the desired times. Interference of the switching procedure on the control loops must be minimised.

      A sample of the diluted exhaust gas is taken from the dilution tunnel DT of a partial flow or full flow dilution system through the particulate sampling probe PSP and the particulate transfer tube PTT by means of the sampling pump P. The sample is passed through the filter holder(s) FH that contain the particulate sampling filters. The sample flow rate is controlled by the flow controller FC3. If electronic flow compensation EFC (see Figure 20) is used, the diluted exhaust gas flow is used as command signal for FC3.

      A sample of the diluted exhaust gas is transferred from the dilution tunnel DT of a full flow dilution system through the particulate sampling probe PSP and the particulate transfer tube PTT to the secondary dilution tunnel SDT, where it is diluted once more. The sample is then passed through the filter holder(s) FH that contain the particulate sampling filters. The dilution air flow rate is usually constant whereas the sample flow rate is controlled by the flow controller FC3. If electronic flow compensation EFC (see Figure 20) is used, the total diluted exhaust gas flow is used as command signal for FC3.
      2.4.1.   Components of Figures 21 and 22
      PTT Particulate transfer tube (Figures 21, 22)
      The particulate transfer tube must not exceed 1 020 mm in length, and must be minimised in length whenever possible. Where applicable (i.e. for partial flow dilution fractional sampling systems and for full flow dilution systems), the length of the sampling probes (SP, ISP, PSP, respectively, see Sections 2.2 and 2.3) shall be included.
      The dimensions are valid for:

                  —

                  the partial flow dilution fractional sampling type and the full flow single dilution system from the tip of the probe (SP, ISP, PSP, respectively) to the filter holder;

                  —

                  the partial flow dilution total sampling type from the end of the dilution tunnel to the filter holder;

                  —

                  the full flow double dilution system from the tip of the probe (PSP) to the secondary dilution tunnel.

            The transfer tube:

                  —

                  may be heated to no greater than 325 K (52 °C) wall temperature by direct heating or by dilution air pre-heating, provided the air temperature does not exceed 325 K (52 °C) prior to the introduction of the exhaust in the dilution tunnel;

                  —

                  may be insulated.

            SDT Secondary dilution tunnel (Figure 22)
      The secondary dilution tunnel should have a minimum diameter of 75 mm, and should be of sufficient length so as to provide a residence time of at least 0,25 seconds for the doubly-diluted sample. The primary filter holder FH shall be located within 300 mm of the exit of the SDT.
      The secondary dilution tunnel:

                  —

                  may be heated to no greater than 325 K (52 °C) wall temperature by direct heating or by dilution air pre-heating, provided the air temperature does not exceed 325 K (52 °C) prior to the introduction of the exhaust in the dilution tunnel;

                  —

                  may be insulated.

            FH Filter holder(s) (Figures 21, 22)
      For primary and back-up filters one filter housing or separate filter housings may be used. The requirements of Annex III, Appendix 4, Section 4.1.3 shall be met.
      The filter holder(s):

                  —

                  may be heated to no greater than 325 K (52 °C) wall temperature by direct heating or by dilution air pre-heating, provided the air temperature does not exceed 325 K (52 °C) prior to the introduction of the exhaust in the dilution tunnel;

                  —

                  may be insulated.

            P Sampling pump (Figures 21, 22)
      The particulate sampling pump shall be located sufficiently distant from the tunnel so that the inlet gas temperature is maintained constant (± 3 K), if flow correction by FC3 is not used.
      DP Dilution air pump (Figure 22)
      The dilution air pump shall be located so that the secondary dilution air is supplied at a temperature of 298 K ± 5 K (25 °C ± 5 °C), if the dilution air is not preheated.
      FC3 Flow controller (Figures 21, 22)
      A flow controller shall be used to compensate the particulate sample flow rate for temperature and backpressure variations in the sample path, if no other means are available. The flow controller is required if electronic flow compensation EFC (see Figure 20) is used.
      FM3 Flow measurement device (Figures 21, 22)
      The gas meter or flow instrumentation for the particulate sample flow shall be located sufficiently distant from the sampling pump P so that the inlet gas temperature remains constant (± 3 K), if flow correction by FC3 is not used.
      FM4 Flow measurement device (Figure 22)
      The gas meter or flow instrumentation for the dilution air flow shall be located so that the inlet gas temperature remains at 298 K ± 5 K (25 °C ± 5 °C).
      BV Ball valve (optional)
      The ball valve shall have an inside diameter not less than the inside diameter of the particulate transfer tube PTT, and a switching time of less than 0,5 seconds.

         Note: If the ambient temperature in the vicinity of PSP, PTT, SDT, and FH is below 293 K (20 °C), precautions should be taken to avoid particle losses onto the cool wall of these parts. Therefore, heating and/or insulating these parts within the limits given in the respective descriptions is recommended. It is also recommended that the filter face temperature during sampling be not below 293 K (20 °C).
      At high engine loads, the above parts may be cooled by a non-aggressive means such as a circulating fan, as long as the temperature of the cooling medium is not below 293 K (20 °C).
      3.   DETERMINATION OF SMOKE
      3.1.   Introduction
      Sections 3.2 and 3.3 and Figures 23 and 24 contain detailed descriptions of the recommended opacimeter systems. Since various configurations can produce equivalent results, exact conformance with Figures 23 and 24 is not required. Additional components such as instruments, valves, solenoids, pumps, and switches may be used to provide additional information and coordinate the functions of the component systems. Other components which are not needed to maintain the accuracy on some systems, may be excluded if their exclusion is based upon good engineering judgement.
      The principle of measurement is that light is transmitted through a specific length of the smoke to be measured and that proportion of the incident light which reaches a receiver is used to assess the light obscuration properties of the medium. The smoke measurement depends upon the design of the apparatus, and may be done in the exhaust pipe (full flow in-line opacimeter), at the end of the exhaust pipe (full flow end-of-line opacimeter) or by taking a sample from the exhaust pipe (partial flow opacimeter). For the determination of the light absorption coefficient from the opacity signal, the optical path length of the instrument shall be supplied by the instrument manufacturer.
      3.2.   Full flow opacimeter
      Two general types of full flow opacimeters may be used (Figure 23). With the in-line opacimeter, the opacity of the full exhaust plume within the exhaust pipe is measured. With this type of opacimeter, the effective optical path length is a function of the opacimeter design.
      With the end-of-line opacimeter, the opacity of the full exhaust plume is measured as it exits the exhaust pipe. With this type of opacimeter, the effective optical path length is a function of the exhaust pipe design and the distance between the end of the exhaust pipe and the opacimeter.

      3.2.1.   Components of Figure 23
      EP Exhaust Pipe
      With an in-line opacimeter, there shall be no change in the exhaust pipe diameter within 3 exhaust pipe diameters before or after the measuring zone. If the diameter of the measuring zone is greater than the diameter of the exhaust pipe, a pipe gradually convergent before the measuring zone is recommended.
      With an end-of-line opacimeter, the terminal 0,6 m of the exhaust pipe shall be of circular cross section and be free from elbows and bends. The end of the exhaust pipe shall be cut off squarely. The opacimeter shall be mounted centrally to the plume within 25 ± 5 mm of the end of the exhaust pipe.
      OPL Optical Path Length
      The length of the smoke obscured optical path between the opacimeter light source and the receiver, corrected as necessary for non-uniformity due to density gradients and fringe effect. The optical path length shall be submitted by the instrument manufacturer taking into account any measures against sooting (e.g. purge air). If the optical path length is not available, it shall be determined in accordance with ISO IDS 11614, Section 11.6.5. For the correct determination of the optical path length, a minimum exhaust gas velocity of 20 m/s is required.
      LS Light source
      The light source shall be an incandescent lamp with a colour temperature in the range of 2 800 to 3 250 K or a green light emitting diode (LED) with a spectral peak between 550 and 570 nm. The light source shall be protected against sooting by means that do not influence the optical path length beyond the manufacturers specifications.
      LD Light detector
      The detector shall be a photocell or a photodiode (with a filter, if necessary). In the case of an incandescent light source, the receiver shall have a peak spectral response similar to the phototopic curve of the human eye (maximum response) in the range of 550 to 570 nm, to less than 4 % of that maximum response below 430 nm and above 680 nm. The light detector shall be protected against sooting by means that do not influence the optical path length beyond the manufacturers specifications.
      CL Collimating lens
      The light output shall be collimated to a beam with a maximum diameter of 30 mm. The rays of the light beam shall be parallel within a tolerance of 3° of the optical axis.
      T1 Temperature sensor (optional)
      The exhaust gas temperature may be monitored over the test.
      3.3.   Partial flow opacimeter
      With the partial flow opacimeter (Figure 24), a representative exhaust sample is taken from the exhaust pipe and passed through a transfer line to the measuring chamber. With this type of opacimeter, the effective optical path length is a function of the opacimeter design. The response times referred to in the following section apply to the minimum flow rate of the opacimeter, as specified by the instrument manufacturer.

      3.3.1.   Components of Figure 24
      EP Exhaust pipe
      The exhaust pipe shall be a straight pipe of at least 6 pipe diameters upstream and 3 pipe diameters downstream of the tip of the probe.
      SP Sampling probe
      The sampling probe shall be an open tube facing upstream on or about the exhaust pipe centreline. The clearance with the wall of the tailpipe shall be at least 5 mm. The probe diameter shall ensure a representative sampling and a sufficient flow through the opacimeter.
      TT Transfer tube
      The transfer tube shall:

                  —

                  Be as short as possible and ensure an exhaust gas temperature of 373 ± 30 K (100 °C ± 30 °C) at the entrance to the measuring chamber.

                  —

                  Have a wall temperature sufficiently above the dew point of the exhaust gas to prevent condensation.

                  —

                  Be equal to the diameter of the sampling probe over the entire length.

                  —

                  Have a response time of less than 0,05 s at minimum instrument flow, as determined according to Annex III, Appendix 4, Section 5.2.4.

                  —

                  Have no significant effect on the smoke peak.

            FM Flow measurement device
      Flow instrumentation to detect the correct flow into the measuring chamber. The minimum and maximum flow rates shall be specified by the instrument manufacturer, and shall be such that the response time requirement of TT and the optical path length specifications are met. The flow measurement device may be close to the sampling pump, P, if used.
      MC Measuring chamber
      The measuring chamber shall have a non-reflective internal surface, or equivalent optical environment. The impingement of stray light on the detector due to internal reflections of diffusion effects shall be reduced to a minimum.
      The pressure of the gas in the measuring chamber shall not differ from the atmospheric pressure by more than 0,75 kPa. Where this is not possible by design, the opacimeter reading shall be converted to atmospheric pressure.
      The wall temperature of the measuring chamber shall be set to within ± 5 K between 343 K (70 °C) and 373 K (100 °C), but in any case sufficiently above the dew point of the exhaust gas to prevent condensation. The measuring chamber shall be equipped with appropriate devices for measuring the temperature.
      OPL Optical path length
      The length of the smoke obscured optical path between the opacimeter light source and the receiver, corrected as necessary for non-uniformity due to density gradients and fringe effect. The optical path length shall be submitted by the instrument manufacturer taking into account any measures against sooting (e.g. purge air). If the optical path length is not available, it shall be determined in accordance with ISO IDS 11614, Section 11.6.5.
      LS Light source
      The light source shall be an incandescent lamp with a colour temperature in the range of 2 800 to 3 250 K or a green light emitting diode (LED) with a spectral peak between 550 and 570 nm. The light source shall be protected against sooting by means that do not influence the optical path length beyond the manufacturers specifications.
      LD Light detector
      The detector shall be a photocell or a photodiode (with a filter, if necessary). In the case of an incandescent light source, the receiver shall have a peak spectral response similar to the phototopic curve of the human eye (maximum response) in the range of 550 to 570 nm, to less than 4 % of that maximum response below 430 nm and above 680 nm. The light detector shall be protected against sooting by means that do not influence the optical path length beyond the manufacturers specifications.
      CL Collimating lens
      The light output shall be collimated to a beam with a maximum diameter of 30 mm. The rays of the light beam shall be parallel within a tolerance of 3° of the optical axis.
      T1 Temperature sensor
      To monitor the exhaust gas temperature at the entrance to the measuring chamber.
      P Sampling pump (optional)
      A sampling pump downstream of the measuring chamber may be used to transfer the sample gas through the measuring chamber.

      ANNEX VI

         (1)  Delete as appropriate.

         Appendix
         to EC type-approval certificate No … concerning the type approval of a vehicle/separate technical unit/component (1)

            (1)  Delete as appropriate.

      ANNEX VII
      EXAMPLE OF CALCULATION PROCEDURE
      1.   ESC TEST
      1.1.   Gaseous emissions
      The measurement data for the calculation of the individual mode results are shown below. In this example, CO and NOx are measured on a dry basis, HC on a wet basis. The HC concentration is given in propane equivalent (C3) and has to be multiplied by 3 to result in the C1 equivalent. The calculation procedure is identical for the other modes.

                  P
                  (kW)

                  Ta

                  (K)

                  Ha

                  (g/kg)

                  GEXH

                  (kg)

                  GAIRW

                  (kg)

                  GFUEL

                  (kg)

                  HC
                  (ppm)

                  CO
                  (ppm)

                  NOx

                  (ppm)

                  82,9

                  294,8

                  7,81

                  563,38

                  545,29

                  18,09

                  6,3

                  41,2

                  495

            Calculation of the dry to wet correction factor KW,r (Annex III, Appendix 1, Section 4.2):

          and

      Calculation of the wet concentrations:

      Calculation of the NOx humidity correction factor KH,D (Annex III, Appendix 1, Section 4.3):

      Calculation of the emission mass flow rates (Annex III, Appendix 1, Section 4.4):

      Calculation of the specific emissions (Annex III, Appendix 1, Section 4.5):
      The following example calculation is given for CO; the calculation procedure is identical for the other components.
      The emission mass flow rates of the individual modes are multiplied by the respective weighting factors, as indicated in Annex III, Appendix 1, Section 2.7.1, and summed up to result in the mean emission mass flow rate over the cycle:

                  CO

                  =

                  =

                  30,91 g/h

            The engine power of the individual modes is multiplied by the respective weighting factors, as indicated in Annex III, Appendix 1, Section 2.7.1, and summed up to result in the mean cycle power:

                  =

                  =

                  60,006 kW

      Calculation of the specific NOx emission of the random point (Annex III, Appendix 1, Section 4.6.1):
      Assume the following values have been determined on the random point:

                  nZ

                  =

                  1 600 min-1

                  MZ

                  =

                  495 Nm

                  NOx mass,Z

                  =

                  487,9 g/h (calculated according to the previous formulae)

                  P(n)Z

                  =

                  83 kW

                  NOx,Z

                  =

                  487,9/83 = 5,878 g/kWh

            Determination of the emission value from the test cycle (Annex III, Appendix 1, Section 4.6.2):
      Assume the values of the four enveloping modes on the ESC to be as follows:

                  nRT

                  nSU

                  ER

                  ES

                  ET

                  EU

                  MR

                  MS

                  MT

                  MU

                  1 368

                  1 785

                  5,943

                  5,565

                  5,889

                  4,973

                  515

                  460

                  681

                  610

      Comparison of the NOx emission values (Annex III, Appendix 1, Section 4.6.3):

      1.2.   Particulate emissions
      Particulate measurement is based on the principle of sampling the particulates over the complete cycle, but determining the sample and flow rates (MSAM and GEDF) during the individual modes. The calculation of GEDF depends on the system used. In the following examples, a system with CO2 measurement and carbon balance method and a system with flow measurement are used. When using a full flow dilution system, GEDF is directly measured by the CVS equipment.
      Calculation of GEDF (Annex III, Appendix 1, Sections 5.2.3 and 5.2.4):
      Assume the following measurement data of mode 4. The calculation procedure is identical for the other modes.

                  GEXH

                  (kg/h)

                  GFUEL

                  (kg/h)

                  GDILW

                  (kg/h)

                  GTOTW

                  (kg/h)

                  CO2D

                  (%)

                  CO2A

                  (%)

                  334,02

                  10,76

                  5,4435

                  6,0

                  0,657

                  0,040

                  (a)

                  carbon balance method

                  (b)

                  flow measurement method

            Calculation of the mass flow rate (Annex III, Appendix 1, Section 5.4):
      The GEDFW flow rates of the individual modes are multiplied by the respective weighting factors, as indicated in Annex III, Appendix 1, Section 2.7.1, and summed up to result in the mean GEDF over the cycle. The total sample rate MSAM is summed up from the sample rates of the individual modes.

                  =

                  =

                  3 604,6 kg/h

                  =

                  0,226 + 0,122 + 0,151 + 0,152 + 0,076 + 0,076 + 0,076 + 0,136 + 0,151 + 0,121 + 0,076 + 0,076 + 0,075

                  =

                  1,515 kg

            Assume the particulate mass on the filters to be 2,5 mg, then

      Background correction (optional)
      Assume one background measurement with the following values. The calculation of the dilution factor DF is identical to Section 3.1 of this Annex and not shown here.

                  Sum of DF

                  =

                  =

                  0,923

      Calculation of the specific emission (Annex III, Appendix 1, Section 5.5):

                  =

                  =

                  60,006 kW

      Calculation of the specific weighting factor (Annex III, Appendix 1, Section 5.6):
      Assume the values calculated for mode 4 above, then

      This value is within the required value of 0,10 ± 0,003.
      2.   ELR TEST
      Since Bessel filtering is a completely new averaging procedure in European exhaust legislation, an explanation of the Bessel filter, an example of the design of a Bessel algorithm, and an example of the calculation of the final smoke value is given below. The constants of the Bessel algorithm only depend on the design of the opacimeter and the sampling rate of the data acquisition system. It is recommended that the opacimeter manufacturer provide the final Bessel filter constants for different sampling rates and that the customer use these constants for designing the Bessel algorithm and for calculating the smoke values.
      2.1.   General remarks on the Bessel filter
      Due to high frequency distortions, the raw opacity signal usually shows a highly scattered trace. To remove these high frequency distortions a Bessel filter is required for the ELR-test. The Bessel filter itself is a recursive, second-order low-pass filter which guarantees the fastest signal rise without overshoot.
      Assuming a real time raw exhaust plume in the exhaust tube, each opacimeter shows a delayed and differently measured opacity trace. The delay and the magnitude of the measured opacity trace is primarily dependent on the geometry of the measuring chamber of the opacimeter, including the exhaust sample lines, and on the time needed for processing the signal in the electronics of the opacimeter. The values that characterise these two effects are called the physical and the electrical response time which represent an individual filter for each type of opacimeter.
      The goal of applying a Bessel filter is to guarantee a uniform overall filter characteristic of the whole opacimeter system, consisting of:

                  —

                  physical response time of the opacimeter (tp),

                  —

                  electrical response time of the opacimeter (te),

                  —

                  filter response time of the applied Bessel filter (tF).

            The resulting overall response time of the system tAver is given by:

      and must be equal for all kinds of opacimeters in order to give the same smoke value. Therefore, a Bessel filter has to be created in such a way, that the filter response time (tF) together with the physical (tp) and electrical response time (te) of the individual opacimeter must result in the required overall response time (tAver). Since tp and te are given values for each individual opacimeter, and tAver is defined to be 1,0 s in this Directive, tF can be calculated as follows:

      By definition, the filter response time tF is the rise time of a filtered output signal between 10 % and 90 % on a step input signal. Therefore the cut-off frequency of the Bessel filter has to be iterated in such a way, that the response time of the Bessel filter fits into the required rise time.

      In Figure a, the traces of a step input signal and Bessel filtered output signal as well as the response time of the Bessel filter (tF) are shown.
      Designing the final Bessel filter algorithm is a multi step process which requires several iteration cycles. The scheme of the iteration procedure is presented below.

      2.2.   Calculation of the Bessel algorithm
      In this example a Bessel algorithm is designed in several steps according to the above iteration procedure which is based upon Annex III, Appendix 1, Section 6.1.
      For the opacimeter and the data acquisition system, the following characteristics are assumed:

                  —

                  physical response time tp 0,15 s

                  —

                  electrical response time te 0,05 s

                  —

                  overall response time tAver 1,00 s (by definition in this Directive)

                  —

                  sampling rate 150 Hz

            Step 1   Required Bessel filter response time tF:

      Step 2   Estimation of cut-off frequency and calculation of Bessel constants E, K for first iteration:

                  fc

                  =

                  Δt

                  =

                  1/150 = 0,006667 s

                  Ω

                  =

                  E

                  =

                  K

                  =

            This gives the Bessel algorithm:

      where Si represents the values of the step input signal (either ‘0’ or ‘1’) and Yi represents the filtered values of the output signal.
      Step 3   Application of Bessel filter on step input:
      The Bessel filter response time tF is defined as the rise time of the filtered output signal between 10 % and 90 % on a step input signal. For determining the times of 10 % (t10) and 90 % (t90) of the output signal, a Bessel filter has to be applied to a step input using the above values of fc, E and K.
      The index numbers, the time and the values of a step input signal and the resulting values of the filtered output signal for the first and the second iteration are shown in Table B. The points adjacent to t10 and t90 are marked in bold numbers.
      In Table B, first iteration, the 10 % value occurs between index number 30 and 31 and the 90 % value occurs between index number 191 and 192. For the calculation of tF,iter the exact t10 and t90 values are determined by linear interpolation between the adjacent measuring points, as follows:

      where outupper and outlower, respectively, are the adjacent points of the Bessel filtered output signal, and tlower is the time of the adjacent time point, as indicated in Table B.

      Step 4   Filter response time of first iteration cycle:

      Step 5   Deviation between required and obtained filter response time of first iteration cycle:

      Step 6   Checking the iteration criteria:
      |Δ| ≤ 0,01 is required. Since 0,081641 > 0,01, the iteration criteria is not met and a further iteration cycle has to be started. For this iteration cycle, a new cut-off frequency is calculated from fc and Δ as follows:

      This new cut-off frequency is used in the second iteration cycle, starting at step 2 again. The iteration has to be repeated until the iteration criteria is met. The resulting values of the first and second iteration are summarised in Table A.
      Table A
      Values of the first and second iteration

                  Parameter

                  1. Iteration

                  2. Iteration

                  fc

                  (Hz)

                  0,318152

                  0,344126

                  E

                  (-)

                  7,07948 E-5

                  8,272777 E-5

                  K

                  (-)

                  0,970783

                  0,968410

                  t10

                  (s)

                  0,200945

                  0,185523

                  t90

                  (s)

                  1,276147

                  1,179562

                  tF,iter

                  (s)

                  1,075202

                  0,994039

                  Δ

                  (-)

                  0,081641

                  0,006657

                  fc,new

                  (Hz)

                  0,344126

                  0,346417

            Step 7   Final Bessel algorithm:
      As soon as the iteration criteria has been met, the final Bessel filter constants and the final Bessel algorithm are calculated according to step 2. In this example, the iteration criteria has been met after the second iteration (Δ = 0,006657 ≤ 0,01). The final algorithm is then used for determining the averaged smoke values (see next Section 2.3).

      Table B
      Values of step input signal and Bessel filtered output signal for the first and second iteration cycle

                  Index i
                  [-]

                  Time
                  [s]

                  Step input signal Si

                  [-]

                  Filtered output signal Yi

                  [-]

                  1. Iteration

                  2. Iteration

                  - 2

                  - 0,013333

                  0

                  0,000000

                  0,000000

                  - 1

                  - 0,006667

                  0

                  0,000000

                  0,000000

                  0

                  0,000000

                  1

                  0,000071

                  0,000083

                  1

                  0,006667

                  1

                  0,000352

                  0,000411

                  2

                  0,013333

                  1

                  0,000908

                  0,001060

                  3

                  0,020000

                  1

                  0,001731

                  0,002019

                  4

                  0,026667

                  1

                  0,002813

                  0,003278

                  5

                  0,033333

                  1

                  0,004145

                  0,004828

                  ~

                  ~

                  ~

                  ~

                  ~

                  24

                  0,160000

                  1

                  0,067877

                  0,077876

                  25

                  0,166667

                  1

                  0,072816

                  0,083476

                  26

                  0,173333

                  1

                  0,077874

                  0,089205

                  27

                  0,180000

                  1

                  0,083047

                  0,095056

                  28

                  0,186667

                  1

                  0,088331

                  0,101024

                  29

                  0,193333

                  1

                  0,093719

                  0,107102

                  30

                  0,200000

                  1

                  0,099208

                  0,113286

                  31

                  0,206667

                  1

                  0,104794

                  0,119570

                  32

                  0,213333

                  1

                  0,110471

                  0,125949

                  33

                  0,220000

                  1

                  0,116236

                  0,132418

                  34

                  0,226667

                  1

                  0,122085

                  0,138972

                  35

                  0,233333

                  1

                  0,128013

                  0,145605

                  36

                  0,240000

                  1

                  0,134016

                  0,152314

                  37

                  0,246667

                  1

                  0,140091

                  0,159094

                  ~

                  ~

                  ~

                  ~

                  ~

                  175

                  1,166667

                  1

                  0,862416

                  0,895701

                  176

                  1,173333

                  1

                  0,864968

                  0,897941

                  177

                  1,180000

                  1

                  0,867484

                  0,900145

                  178

                  1,186667

                  1

                  0,869964

                  0,902312

                  179

                  1,193333

                  1

                  0,872410

                  0,904445

                  180

                  1,200000

                  1

                  0,874821

                  0,906542

                  181

                  1,206667

                  1

                  0,877197

                  0,908605

                  182

                  1,213333

                  1

                  0,879540

                  0,910633

                  183

                  1,220000

                  1

                  0,881849

                  0,912628

                  184

                  1,226667

                  1

                  0,884125

                  0,914589

                  185

                  1,233333

                  1

                  0,886367

                  0,916517

                  186

                  1,240000

                  1

                  0,888577

                  0,918412

                  187

                  1,246667

                  1

                  0,890755

                  0,920276

                  188

                  1,253333

                  1

                  0,892900

                  0,922107

                  189

                  1,260000

                  1

                  0,895014

                  0,923907

                  190

                  1,266667

                  1

                  0,897096

                  0,925676

                  191

                  1,273333

                  1

                  0,899147

                  0,927414

                  192

                  1,280000

                  1

                  0,901168

                  0,929121

                  193

                  1,286667

                  1

                  0,903158

                  0,930799

                  194

                  1,293333

                  1

                  0,905117

                  0,932448

                  195

                  1,300000

                  1

                  0,907047

                  0,934067

                  ~

                  ~

                  ~

                  ~

                  ~

            2.3.   Calculation of the smoke values
      In the scheme below the general procedure of determining the final smoke value is presented.

      In Figure b, the traces of the measured raw opacity signal, and of the unfiltered and filtered light absorption coefficients (k-value) of the first load step of an ELR-Test are shown, and the maximum value Ymax1,A (peak) of the filtered k trace is indicated. Correspondingly, Table C contains the numerical values of index i, time (sampling rate of 150 Hz), raw opacity, unfiltered k and filtered k. Filtering was conducted using the constants of the Bessel algorithm designed in Section 2.2 of this Annex. Due to the large amount of data, only those sections of the smoke trace around the beginning and the peak are tabled.

      The peak value (i = 272) is calculated assuming the following data of Table C. All other individual smoke values are calculated in the same way. For starting the algorithm, S-1, S-2, Y-1 and Y-2 are set to zero.

                  LA (m)

                  0,430

                  Index i

                  272

                  N ( %)

                  16,783

                  S271 (m-1)

                  0,427392

                  S270 (m-1)

                  0,427532

                  Y271 (m-1)

                  0,542383

                  Y270 (m-1)

                  0,542337

            Calculation of the k-value (Annex III, Appendix 1, Section 6.3.1):

      This value corresponds to S272 in the following equation.
      Calculation of Bessel averaged smoke (Annex III, Appendix 1, Section 6.3.2):
      In the following equation, the Bessel constants of the previous Section 2.2 are used. The actual unfiltered k-value, as calculated above, corresponds to S272 (Si). S271 (Si-1) and S270 (Si-2) are the two preceding unfiltered k-values, Y271 (Yi-1) and Y270 (Yi-2) are the two preceding filtered k-values.

                  =

                  =

            This value corresponds to Ymax1,A in the following equation.
      Calculation of the final smoke value (Annex III, Appendix 1, Section 6.3.3):
      From each smoke trace, the maximum filtered k-value is taken for the further calculation.
      Assume the following values

                  Speed

                  Ymax (m-1)

                  Cycle 1

                  Cycle 2

                  Cycle 3

                  A

                  0,5424

                  0,5435

                  0,5587

                  B

                  0,5596

                  0,5400

                  0,5389

                  C

                  0,4912

                  0,5207

                  0,5177

      Cycle validation (Annex III, Appendix 1, Section 3.4)
      Before calculating SV, the cycle must be validated by calculating the relative standard deviations of the smoke of the three cycles for each speed.

                  Speed

                  Mean SV
                  (m-1)

                  Absolute standard deviation
                  (m-1)

                  Relative standard deviation
                  (%)

                  A

                  0,5482

                  0,0091

                  1,7

                  B

                  0,5462

                  0,0116

                  2,1

                  C

                  0,5099

                  0,0162

                  3,2

            In this example, the validation criteria of 15 % are met for each speed.
      Table C
      Values of opacity N, unfiltered and filtered k-value at beginning of load step

                  Index i
                  [-]

                  Time
                  [s]

                  Opacity N
                  [%]

                  Unfiltered k-value
                  [m-1]

                  Filtered k-value
                  [m-1]

                  - 2

                  0,000000

                  0,000000

                  0,000000

                  0,000000

                  - 1

                  0,000000

                  0,000000

                  0,000000

                  0,000000

                  0

                  0,000000

                  0,000000

                  0,000000

                  0,000000

                  1

                  0,006667

                  0,020000

                  0,000465

                  0,000000

                  2

                  0,013333

                  0,020000

                  0,000465

                  0,000000

                  3

                  0,020000

                  0,020000

                  0,000465

                  0,000000

                  4

                  0,026667

                  0,020000

                  0,000465

                  0,000001

                  5

                  0,033333

                  0,020000

                  0,000465

                  0,000002

                  6

                  0,040000

                  0,020000

                  0,000465

                  0,000002

                  7

                  0,046667

                  0,020000

                  0,000465

                  0,000003

                  8

                  0,053333

                  0,020000

                  0,000465

                  0,000004

                  9

                  0,060000

                  0,020000

                  0,000465

                  0,000005

                  10

                  0,066667

                  0,020000

                  0,000465

                  0,000006

                  11

                  0,073333

                  0,020000

                  0,000465

                  0,000008

                  12

                  0,080000

                  0,020000

                  0,000465

                  0,000009

                  13

                  0,086667

                  0,020000

                  0,000465

                  0,000011

                  14

                  0,093333

                  0,020000

                  0,000465

                  0,000012

                  15

                  0,100000

                  0,192000

                  0,004469

                  0,000014

                  16

                  0,106667

                  0,212000

                  0,004935

                  0,000018

                  17

                  0,113333

                  0,212000

                  0,004935

                  0,000022

                  18

                  0,120000

                  0,212000

                  0,004935

                  0,000028

                  19

                  0,126667

                  0,343000

                  0,007990

                  0,000036

                  20

                  0,133333

                  0,566000

                  0,013200

                  0,000047

                  21

                  0,140000

                  0,889000

                  0,020767

                  0,000061

                  22

                  0,146667

                  0,929000

                  0,021706

                  0,000082

                  23

                  0,153333

                  0,929000

                  0,021706

                  0,000109

                  24

                  0,160000

                  1,263000

                  0,029559

                  0,000143

                  25

                  0,166667

                  1,455000

                  0,034086

                  0,000185

                  26

                  0,173333

                  1,697000

                  0,039804

                  0,000237

                  27

                  0,180000

                  2,030000

                  0,047695

                  0,000301

                  28

                  0,186667

                  2,081000

                  0,048906

                  0,000378

                  29

                  0,193333

                  2,081000

                  0,048906

                  0,000469

                  30

                  0,200000

                  2,424000

                  0,057067

                  0,000573

                  31

                  0,206667

                  2,475000

                  0,058282

                  0,000693

                  32

                  0,213333

                  2,475000

                  0,058282

                  0,000827

                  33

                  0,220000

                  2,808000

                  0,066237

                  0,000977

                  34

                  0,226667

                  3,010000

                  0,071075

                  0,001144

                  35

                  0,233333

                  3,253000

                  0,076909

                  0,001328

                  36

                  0,240000

                  3,606000

                  0,085410

                  0,001533

                  37

                  0,246667

                  3,960000

                  0,093966

                  0,001758

                  38

                  0,253333

                  4,455000

                  0,105983

                  0,002007

                  39

                  0,260000

                  4,818000

                  0,114836

                  0,002283

                  40

                  0,266667

                  5,020000

                  0,119776

                  0,002587

      Values of opacity N, unfiltered and filtered k-value around Ymax1,A (≡ peak value, indicated in bold number)

                  Index i
                  [-]

                  Time
                  [s]

                  Opacity N
                  [%]

                  Unfiltered k-value
                  [m-1]

                  Filtered k-value
                  [m-1]

                  259

                  1,726667

                  17,182000

                  0,438429

                  0,538856

                  260

                  1,733333

                  16,949000

                  0,431896

                  0,539423

                  261

                  1,740000

                  16,788000

                  0,427392

                  0,539936

                  262

                  1,746667

                  16,798000

                  0,427671

                  0,540396

                  263

                  1,753333

                  16,788000

                  0,427392

                  0,540805

                  264

                  1,760000

                  16,798000

                  0,427671

                  0,541163

                  265

                  1,766667

                  16,798000

                  0,427671

                  0,541473

                  266

                  1,773333

                  16,788000

                  0,427392

                  0,541735

                  267

                  1,780000

                  16,788000

                  0,427392

                  0,541951

                  268

                  1,786667

                  16,798000

                  0,427671

                  0,542123

                  269

                  1,793333

                  16,798000

                  0,427671

                  0,542251

                  270

                  1,800000

                  16,793000

                  0,427532

                  0,542337

                  271

                  1,806667

                  16,788000

                  0,427392

                  0,542383

                  272

                  1,813333

                  16,783000

                  0,427252

                     0,542389

                  273

                  1,820000

                  16,780000

                  0,427168

                  0,542357

                  274

                  1,826667

                  16,798000

                  0,427671

                  0,542288

                  275

                  1,833333

                  16,778000

                  0,427112

                  0,542183

                  276

                  1,840000

                  16,808000

                  0,427951

                  0,542043

                  277

                  1,846667

                  16,768000

                  0,426833

                  0,541870

                  278

                  1,853333

                  16,010000

                  0,405750

                  0,541662

                  279

                  1,860000

                  16,010000

                  0,405750

                  0,541418

                  280

                  1,866667

                  16,000000

                  0,405473

                  0,541136

                  281

                  1,873333

                  16,010000

                  0,405750

                  0,540819

                  282

                  1,880000

                  16,000000

                  0,405473

                  0,540466

                  283

                  1,886667

                  16,010000

                  0,405750

                  0,540080

                  284

                  1,893333

                  16,394000

                  0,416406

                  0,539663

                  285

                  1,900000

                  16,394000

                  0,416406

                  0,539216

                  286

                  1,906667

                  16,404000

                  0,416685

                  0,538744

                  287

                  1,913333

                  16,394000

                  0,416406

                  0,538245

                  288

                  1,920000

                  16,394000

                  0,416406

                  0,537722

                  289

                  1,926667

                  16,384000

                  0,416128

                  0,537175

                  290

                  1,933333

                  16,010000

                  0,405750

                  0,536604

                  291

                  1,940000

                  16,010000

                  0,405750

                  0,536009

                  292

                  1,946667

                  16,000000

                  0,405473

                  0,535389

                  293

                  1,953333

                  16,010000

                  0,405750

                  0,534745

                  294

                  1,960000

                  16,212000

                  0,411349

                  0,534079

                  295

                  1,966667

                  16,394000

                  0,416406

                  0,533394

                  296

                  1,973333

                  16,394000

                  0,416406

                  0,532691

                  297

                  1,980000

                  16,192000

                  0,410794

                  0,531971

                  298

                  1,986667

                  16,000000

                  0,405473

                  0,531233

                  299

                  1,993333

                  16,000000

                  0,405473

                  0,530477

                  300

                  2,000000

                  16,000000

                  0,405473

                  0,529704

            3.   ETC TEST
      3.1.   Gaseous emissions (diesel engine)
      Assume the following test results for a PDP-CVS system

                  V0 (m3/rev)

                  0,1776

                  Np (rev)

                  23 073

                  pB (kPa)

                  98,0

                  p1 (kPa)

                  2,3

                  T (K)

                  322,5

                  Ha (g/kg)

                  12,8

                  NOx conce (ppm)

                  53,7

                  NOx concd (ppm)

                  0,4

                  COconce (ppm)

                  38,9

                  COconcd (ppm)

                  1,0

                  HCconce (ppm)

                  9,00

                  HCconcd (ppm)

                  3,02

                  CO2,conce (%)

                  0,723

                  Wact (kWh)

                  62,72

            Calculation of the diluted exhaust gas flow (Annex III, Appendix 2, Section 4.1):

      Calculation of the NOx correction factor (Annex III, Appendix 2, Section 4.2):

      Calculation of the background corrected concentrations (Annex III, Appendix 2, Section 4.3.1.1):
      Assuming a diesel fuel of the composition C1H1,8

      Calculation of the emissions mass flow (Annex III, Appendix 2, Section 4.3.1):

      Calculation of the specific emissions (Annex III, Appendix 2, Section 4.4):

      3.2.   Particulate emissions (diesel engine)
      Assume the following test results for a PDP-CVS system with double dilution

                  MTOTW (kg)

                  4 237,2

                  Mf,p (mg)

                  3,030

                  Mf,b (mg)

                  0,044

                  MTOT (kg)

                  2,159

                  MSEC (kg)

                  0,909

                  Md (mg)

                  0,341

                  MDIL (kg)

                  1,245

                  DF

                  18,69

                  Wact (kWh)

                  62,72

            Calculation of the mass emission (Annex III, Appendix 2, Section 5.1):

      Calculation of the background corrected mass emission (Annex III, Appendix 2, Section 5.1):

      Calculation of the specific emission (Annex III, Appendix 2, Section 5.2):

      3.3.   Gaseous emissions (CNG engine)
      Assume the following test results for a PDP-CVS system with double dilution

                  MTOTW (kg)

                  4 237,2

                  Ha (g/kg)

                  12,8

                  NOx conce (ppm)

                  17,2

                  NOx concd (ppm)

                  0,4

                  COconce (ppm)

                  44,3

                  COconcd (ppm)

                  1,0

                  HCconce (ppm)

                  27,0

                  HCconcd (ppm)

                  3,02

                  CH4 conce (ppm)

                  18,0

                  CH4 concd (ppm)

                  1,7

                  CO2,conce ( %)

                  0,723

                  Wact (kWh)

                  62,72

            Calculation of the NOx, correction factor (Annex III, Appendix 2, Section 4.2):

      Calculation of the NMHC concentration (Annex III, Appendix 2, Section 4.3.1):

                  (a)

                  GC method

                  (b)

                  NMC method
                  Assuming a methane efficiency of 0,04 and an ethane efficiency of 0,98 (see Annex III, Appendix 5, Section 1.8.4)

            Calculation of the background corrected concentrations (Annex III, Appendix 2, Section 4.3.1.1):
      Assuming a G20 reference fuel (100 % methane) of the composition C1H4:

      For NMHC, the background concentration is the difference between HCconcd and CH4concd

      Calculation of the emissions mass flow (Annex III, Appendix 2, Section 4.3.1):

      Calculation of the specific emissions (Annex III, Appendix 2, Section 4.4):

      4.   λ-SHIFT FACTOR (Sλ)
      4.1.   Calculation of the λ-shift factor (Sλ) (1)

      where:

                  Sλ

                  =

                  λ-shift factor;

                  inert %

                  =

                  % by volume of inert gases in the fuel (i.e. N2, CO2, He, etc.);

                  O2
                     *

                  =

                  % by volume of original oxygen in the fuel;

                  n and m

                  =

                  refer to average CnHm representing the fuel hydrocarbons, i.e:

            where:

                  CH4

                  =

                  % by volume of methane in the fuel;

                  C2

                  =

                  % by volume of all C2 hydrocarbons (e.g. C2H6, C2H4, etc.) in the fuel;

                  C3

                  =

                  % by volume of all C3 hydrocarbons (e.g. C3H8, C3H6, etc.) in the fuel;

                  C4

                  =

                  % by volume of all C4 hydrocarbons (e.g. C4H10, C4H8, etc.) in the fuel

                  C5

                  =

                  % by volume of all C5 hydrocarbons (e.g. C5H12, C5H10, etc.) in the fuel;

                  diluent

                  =

                  % by volume of dilution gases in the fuel (i.e. O2
                     *, N2, CO2, He etc.).

            4.2.   Examples for the calculation of the λ-shift factor Sλ

                     Example 1:

                  G25: CH4 = 86 %, N2 = 14 % (by volume)

                     Example 2:

                  GR: CH4 = 87 %, C2H6 = 13 % (by vol)

                     Example 3:

                  USA: CH4 = 89 %, C2H6 = 4,5 %, C3H8 = 2,3 %, C6H14 = 0,2 %, O2 = 0,6 %, N2 = 4 %

         (1)  Stoichiometric Air/Fuel ratios of automotive fuels - SAE J1829, June 1987. John B. Heywood, Internal combustion engine fundamentals, McGraw-Hill, 1988, Chapter 3.4 ‘Combustion stoichiometry’ (pp. 68 to 72).

      ANNEX VIII
      SPECIFIC TECHNICAL REQUIREMENTS RELATING TO ETHANOL-FUELLED DIESEL ENGINES
      In the case of ethanol-fuelled diesel engines, the following specific modifications to the appropriate paragraphs, equations and factors will apply to the test procedures defined in Annex III to this Directive.
      IN ANNEX III, APPENDIX 1:
      4.2.   Dry/wet correction

      4.3.   NOx correction for humidity and temperature

      with,

                  A

                  =

                  0,181 GFUEL/GAIRD - 0,0266

                  B

                  =

                  – 0,123 GFUEL/GAIRD + 0,00954

                  Ta

                  =

                  temperature of the air, K

                  Ha

                  =

                  humidity of the intake air, g water per kg dry air

            4.4.   Calculation of the emission mass flow rates
      The emission mass flow rates (g/h) for each mode shall be calculated as follows, assuming the exhaust gas density to be 1,272 kg/m3 at 273 K (0 °C) and 101,3 kPa:

      where
      NOx conc, COconc, HCconc
          (1) are the average concentrations (ppm) in the raw exhaust gas, as determined in Section 4.1.
      If, optionally, the gaseous emissions are determined with a full flow dilution system, the following formulae shall be applied:

      where
      NOx conc, COconc, HCconc
          (1) are the average background corrected concentrations (ppm) of each mode in the diluted exhaust gas, as determined in Annex III, Appendix 2, Section 4.3.1.1.
      IN ANNEX III, APPENDIX 2:
      Sections 3.1, 3.4, 3.8.3 and 5 of Appendix 2 do not apply solely to diesel engines. They also apply to ethanol-fuelled diesel engines.

                  4.2.

                  The conditions for the test should be arranged so that the air temperature and the humidity measured at the engine intake is set to standard conditions during the test run. The standard should be 6 ± 0,5 g water per kg dry air at a temperature interval of 298 ± 3 K. Within these limits no further NOx correction should be made. The test is void if these conditions are not met.

            4.3.   Calculation of the emission mass flow
      4.3.1   Systems with constant mass flow
      For systems with heat exchanger, the mass of the pollutants (g/test) shall be determined from the following equations:

      where,
      NOx conc, COconc, HCconc
          (2), NMHCconc= average background corrected concentrations over the cycle from integration (mandatory for NOx and HC) or bag measurement, ppm;
      MTOTW= total mass of diluted exhaust gas over the cycle as determined in Section 4.1, kg.
      4.3.1.1.   Determination of the background corrected concentrations
      The average background concentration of the gaseous pollutants in the dilution air shall be subtracted from measured concentrations to get the net concentrations of the pollutants. The average values of the background concentrations can be determined by the sample bag method or by continuous measurement with integration. The following formula shall be used.

      where,

                  conc

                  =

                  concentration of the respective pollutant in the diluted exhaust gas, corrected by the amount of the respective pollutant contained in the dilution air, ppm;

                  conce

                  =

                  concentration of the respective pollutant measured in the diluted exhaust gas, ppm;

                  concd

                  =

                  concentration of the respective pollutant measured in the dilution air, ppm;

                  DF

                  =

                  dilution factor.

            The dilution factor shall be calculated as follows:

      where,

                  CO2conce

                  =

                  concentration of CO2 in the diluted exhaust gas, % vol

                  HCconce

                  =

                  concentration of HC in the diluted exhaust gas, ppm C1

                  COconce

                  =

                  concentration of CO in the diluted exhaust gas, ppm

                  FS

                  =

                  stoichiometric factor

            Concentrations measured on dry basis shall be converted to a wet basis in accordance with Annex III, Appendix 1, Section 4.2.
      The stoichiometric factor shall, for the general fuel composition CHαOβNγ, be calculated as follows:

      Alternatively, if the fuel composition is not known, the following stoichiometric factors may be used:
      FS (Ethanol) = 12,3
      4.3.2.   Systems with flow compensation
      For systems without heat exchanger, the mass of the pollutants (g/test) shall be determined by calculating the instantaneous mass emissions and integrating the instantaneous values over the cycle. Also, the background correction shall be applied directly to the instantaneous concentration value. The following formulae shall be applied:

      where,

                  conce

                  =

                  concentration of the respective pollutant measured in the diluted exhaust gas, ppm;

                  concd

                  =

                  concentration of the respective pollutant measured in the dilution air, ppm;

                  MTOTW,i

                  =

                  instantaneous mass of the diluted exhaust gas (see Section 4.1), kg;

                  MTOTW

                  =

                  total mass of diluted exhaust gas over the cycle (see Section 4.1), kg;

                  DF

                  =

                  dilution factor as dertermined in Section 4.3.1.1.

            4.4.   Calculation of the specific emissions
      The emissions (g/kWh) shall be calculated for all individual components in the following way:

      where,

                  Wact

                  =

                  actual cycle work as determined in Section 3.9.2, kWh.

         (1)  Based on C1 equivalent.

         (2)  Based on C1 equivalent.

      ANNEX IX
      TIME-LIMITS FOR THE TRANSPOSITION OF THE REPEALED DIRECTIVES INTO NATIONAL LAWS
      Referred to in Article 10
      Part A
      Repealed Directives

                  Directives

                  Official Journal

                  Directive 88/77/EEC

                     L 36, 9.2.1988, p. 33.

                  Directive 91/542/EEC

                     L 295, 25.10.1991, p. 1.

                  Directive 96/1/EC

                     L 40, 17.2.1996, p. 1.

                  Directive 1999/96/EC

                     L 44, 16.2.2000, p. 1.

                  Directive 2001/27/EC

                     L 107, 18.4.2001, p. 10.

      Part B
      Time limits for transposition into national laws

                  Directive

                  Time-limits for transposition

                  Date of application

                  Directive 88/77/EEC

                  1 July 1988

                  Directive 91/542/EEC

                  1 January 1992

                  Directive 96/1/EC

                  1 July 1996

                  Directive 1999/96/EC

                  1 July 2000

                  Directive 2001/27/EC

                  1 October 2001

                  1 October 2001

      ANNEX X
      CORRELATION TABLE
      (Referred to in the second paragraph of Article 10)

                  Directive 88/77/EEC

                  Directive 91/542/EEC

                  Directive 1999/96/EC

                  Directive 2001/27/EC

                  This Directive

                  Article 1

                  —

                  —

                  Article 1

                  Article 2(1)

                  Article 2(1)

                  Article 2(1)

                  Article 2(1)

                  Article 2(4)

                  Article 2(2)

                  Article 2(2)

                  Article 2(2)

                  Article 2(2)

                  Article 2(1)

                  —

                  Article 2(3)

                  —

                  —

                  —

                  Article 2(3)

                  —

                  —

                  —

                  —

                  Article 2(4)

                  Article 2(4)

                  Article 2(3)

                  Article 2(3)

                  Article 2(2)

                  —

                  —

                  —

                  Article 2(4)

                  Article 2(3)

                  —

                  —

                  —

                  Article 2(5)

                  —

                  —

                  —

                  Article 2(4)

                  —

                  Article 2(5)

                  —

                  —

                  Article 2(5)

                  —

                  Article 2(6)

                  —

                  —

                  Article 2(6)

                  —

                  Article 2(7)

                  —

                  —

                  Article 2(7)

                  —

                  Article 2(8)

                  —

                  —

                  Article 2(8)

                  —

                  Article 2(9)

                  Article 3

                  —

                  —

                  —

                  —

                  —

                  —

                  Article 5 and 6

                  —

                  Article 3

                  —

                  —

                  Article 4

                  —

                  Article 4

                  —

                  Article 3(1)

                  Article 3(1)

                  —

                  Article 6(1)

                  —

                  Article 3(1)(a)

                  Article 3(1)(a)

                  —

                  Article 6(2)

                  —

                  Article 3(1)(b)

                  Article 3(1)(b)

                  —

                  Article 6(3)

                  —

                  Article 3(2)

                  Article 3(2)

                  —

                  Article 6(4)

                  —

                  Article 3(3)

                  Article 3(3)

                  —

                  Article 6(5)

                  Article 4

                  —

                  —

                  —

                  Article 7

                  Article 6

                  Article 5 and 6

                  Article 7

                  —

                  Article 8

                  Article 5

                  Article 4

                  Article 8

                  Article 3

                  Article 9

                  —

                  —

                  —

                  —

                  Article 10

                  —

                  —

                  Article 9

                  Article 4

                  Article 11

                  Article 7

                  Article 7

                  Article 10

                  Article 5

                  Article 12

                  Annexes I to VII

                  —

                  —

                  —

                  Annexes I to VII

                  —

                  —

                  —

                  Annex VIII

                  Annex VIII

                  —

                  —

                  —

                  —

                  Annex IX

                  —

                  —

                  —

                  —

                  Annex X