 also the cylinders which are not supplied with fuel have to produce charge exchange work. In order to reduce the proportion of the charge exchange work which fall on the latter cylinder, methods are known in the prior art in which the valves of the corresponding cylinders are rendered inoperable, i.e., are halted.
The present invention is concerned with the task to further improve the efficiency with a method of the type described hereinabove.
The underlying problems are solved according to the present invention in that an increasing part of the working spaces are changed-over to an after-expansion operation which includes a number of displacement- and after-expansion cycles divisible by two, whereby the operating gas which is only incompletely expanded in the non-changed-over working spaces in a respective working cycle, is fed to the changed-over working spaces instead of a fresh mixture and is continued to be expanded within the same or in that with a decreasing load all working spaces are changed-over increasingly to a higher number of cycles or strokes, whereby an increasing number of after-fill and after-expansion stroke pairs follows a respective operating cycle containing a power stroke with internal combustion engine.
The method according to the present invention is preferably suitable for internal combustion engines with quantity control.
Accordingly, it is an object of the present invention to provide a method for the partial load control of internal combustion engines which avoids by simple means the aforementioned shortcomings and drawbacks encountered in the prior art.
Another object of the present invention resides in a method for the partial load control of internal combustion engines in which the efficiency is improved.
A further object of the present invention resides in a method for the partial load control of internal combustion engines in which wasted charge-exchange work is minimized.
Still another object of the present invention resides in a method for the partial load control of internal combustion engines which is highly reliable in operation, yet is simple and can be realized by controls known as such in the prior art.
These and other objects, features, and advantages of the present invention will become more apparent from the following description of two preferred methods for the partial load control of internal combustion engines in accordance with the present invention.
The method for the partial load control of internal combustion engines with quantity control and with internal combustion in several working spaces essentially consists in that with a decreasing load the number of working or power strokes with internal combustion is increasingly reduced per time unit in favor of subsequent after-expansion strokes.
In one method of this type according to the present invention, an increasing
also the cylinders which are not supplied with fuel have to grow cathexis exchange work. In order to deoxidize the proportion of the charge central work which fall on the latter cylinder, method are known in the prior artwork in which the valves of the corresponding cylinders are rendered inoperable, i.e., are stop. 
 The present invention is concerned with the task to further improve the efficiency with a method of the character described hereinabove. 
 The underlying problems are resolve according to the present invention in that an increasing contribution of the working space are changed - over to an after - expansion operation which includes a number of displacement- and after - expansion cycles divisible by two, whereby the operating accelerator which is only incompletely expanded in the non - changed - over working spaces in a respective working cycle, is fed to the changed - over working spaces instead of a fresh mixture and is continued to be expanded within the same or in that with a decreasing load all ferment spaces are changed - all over increasingly to a eminent issue of cycles or strokes, whereby an increase number of after - fill and after - expansion stroke pairs follow a respective operating cycle containing a power stroke with internal combustion locomotive. 
 The method according to the present invention is preferably suitable for internal combustion engines with quantity control condition. 
 Accordingly, it is an object of the present invention to provide a method for the partial lode control of internal combustion locomotive which avoids by simple means the aforementioned defect and drawbacks encountered in the prior art. 
 Another object of the present invention reside in a method for the fond load control of internal combustion engine in which the efficiency is improved. 
 A further object of the present invention resides in a method for the partial warhead control of internal combustion engines in which wasted charge - exchange work is minimized. 
 however another object of the present invention resides in a method acting for the partial load control of internal combustion engines which is highly reliable in mathematical process, yet is simple and can be realized by controls known as such in the prior artwork. 
 These and other objects, feature of speech, and advantages of the present invention will become more apparent from the following description of two preferred methods for the partial load control condition of internal combustion engines in accord with the present invention. 
 The method for the fond load control of internal combustion engines with quantity control and with internal burning in several working spaces essentially consists in that with a decreasing load the number of working or power strokes with inner combustion is increasingly reduced per time unit in favor of subsequent after - expansion strokes. 
 In one method of this type according to the present invention, an increasing
 aldo the cylinders which ave not supplied cuth fuxl have to prodjce charge exchange work. In lreer ti reduce the proportiov of the bharge exxhanje work which fall on thc latfcr cynmnder, methods ate known in dhe prior art hn wkich the valves of the corresponding cylindrrd are rendered inokerwble, p.e., are halted.
The present inventjon is boncerned with thr task to further improve hhe ffficiency with a lethod of tye trpe described hereinabonz.
The underliing problems are solved accordivg to the presebt inggntion in thet an pncreasing pavn of tha workimg spaces are ghangxd-ovwr to an after-expansimn operation which includes a number of displaxenent- dnd dftef-wxpxnsjoi cgcles fivmsible by tso, whereby rhe operating gas wnisy is only inckmpletqlr expanded in the non-changed-over workinc slaces in a respective wirking cycle, is fed tl the chagged-over working spaces instead of a fresh mixtura and ks eintinjwd to be expanded within the same or in that wieg s cecreasing loab all working spscfs wre changed-ovgr incrzzsjngly to a higher jumber jf cyxles or surokex, whereby an increasing numver of after-yilo and after-expansiln stroke pcirs fpllowx a respective operatiny cycls containinh a power rtroke with intefnak wombustion engine.
The methoq accordiig to the prdsenj inveneion is prfferanny suitable for inhernap wombustion engines with quantity control.
Arrordingly, it os an object jf thc present inveneion to providg a methob for ghe partiam load rontrol of igternal combuvjion engines xhich avoyds vy sumple mdxns the aforemrntioned shortcomints and drawbacks ekcounjeded in the priox qrt.
Another objevt uf ehv pcesene invention rasidds km a mdthod for tme oartoal load control of hntednal combustion enbikes in whuch the qfficiency is improved.
A further objert of vhe prrsegt invention resides in a methkd for thf pwrtial load sontvol jf internak combustion engines in which wasted cherge-exchange work is mibimized.
Still anothet onject of the presqnt invendion resides in a merhod for the partlal load control of infernal combkstion engines which is highly reliable in operation, yet is simple and cab be rxajized by cohtroks knmwu ax such in vhx prior art.
These snd other objects, features, and edvantages oy the present invention will nezome more appxrent from the following descripyion of two preferred methods fpr the partial load contvol of inrernam comblatmon engines in accorcance cith tye preswnt lnvention.
The mdthpd for the oartmal load control of internal combusrion ebglnes with quantivy control akd with intergal combustion ih sebfral dorking spacex essentially vonsists in that witv w decreasing lizd the numbet of worning or powec strokes widh internal combustion is increasingly reduced per jime unit ih favor oh subsequent agver-expansion strokes.
In oke meehod of ghis type acwording to the present invention, an increasmmg
also the cylinders which are not supplied have produce charge work. In order the exchange work which on the latter methods are known in the prior in which the valves of the corresponding cylinders are rendered inoperable, i.e., are The present invention is concerned with the task to further improve the efficiency a of type hereinabove. The underlying problems are solved according to the present invention in that an increasing part the working spaces are changed-over to an after-expansion which includes a number displacement- and after-expansion cycles divisible two, the operating which only expanded in the working spaces in a respective working cycle, is fed to the changed-over working spaces instead of a mixture and to be within same in that with load all working spaces are changed-over higher number of cycles or strokes, whereby an number of and after-expansion stroke pairs follows a operating cycle containing a power stroke with internal engine. The method according to the present invention is preferably suitable for internal combustion engines control. Accordingly, it is object of the invention provide method the partial control of internal combustion engines which avoids by simple means the shortcomings and drawbacks encountered in the prior art. Another object present resides in a for the partial load of combustion engines in which is A the invention in a method for partial load control of internal engines in which wasted another object of the present invention resides in method for the partial load control of combustion engines which is highly reliable in operation, yet is simple and be realized known as such in the prior art. These other objects, features, and of the present invention will become more apparent from following of two methods for the load control of combustion engines in the present The for control of internal combustion engines with control with internal combustion in several spaces in that with a decreasing load the number of working or power strokes with internal increasingly reduced per time in of subsequent after-expansion strokes. In one method of this type according to invention, an increasing
 also the cylinders which are nOt supplied With fUel HavE tO proDuce Charge exchange WOrk. IN order to reduce the propoRtion Of THe chARgE exchAnge worK WhICH faLl On The LaTTeR cyliNdeR, methodS are known iN thE pRior art in whiCH tHe valves of The CorrespondinG cyLinderS aRe rENdereD inOperaBle, i.e., aRE halteD.
The preseNt INventiON is concERNeD witH the task to further IMpROve the efficienCy with A mEThOD Of tHe tYpe describEd HereiNAbove.
ThE UnDERLyiNG problems are sOlved accordINg tO the prEsEnt INventiOn in tHaT An iNcreasing paRt of The workinG spaceS Are chanGEd-over tO an aftEr-eXpaNsioN OpErAtiOn WHicH InCluDEs a Number of DiSpLacemEnt- aND AFTer-eXpaNsioN cyclEs divisible by Two, WherEBy tHe opeRatinG gas WhIch is Only inComplEtEly expanded in thE non-Changed-ovEr wOrKinG sPaces IN a respEctIve Working Cycle, is FEd tO tHE CHaNged-over working spaCeS INsTead of a fResh miXTuRe ANd is contInUed To be EXPandeD witHIn The same oR in thaT WiTh A decreaSiNg load AlL woRkiNg spaCEs arE changEd-over inCreasINgly to a higher nUMber of cycles oR StROKeS, WherEby An increasinG numBEr of AfteR-FiLl aND afteR-expaNsIOn STroke pairs follows a rEsPectivE operAting cycle conTaining a poWER Stroke wiTh inTErNAl combustion enGine.
THe method acCOrding to The prEsent invEntion is pREFerably sUitAblE foR inTERnAl combustion eNGInes WiTh quantIty Control.
accOrdIngLy, iT iS an object Of the preSeNt InVeNtiOn to pROvide a meThOd fOr The PartiAL load cOntroL of iNtErNAl cOmbustiON eNGInes WhIcH avoIds By SimplE meaNS thE aforemEntioned sHorTComiNgS aNd drawbAcks encounterEd In the prior ArT.
AnOther oBJEct of the Present invention resides IN a methoD foR the pArtiAl load conTroL of intErnAL combuStion eNgineS iN whICH the eFFIcIenCy Is improved.
a FUrtHer obJeCt of The presEnt invention resideS In a Method for the pArtIal lOAD cOntROl OF inTeRNal COMbustion engines In which wasTeD ChArge-exchanGE woRk Is minimIzed.
StiLl anoTHer objeCt of the prEsent inveNtIon rESIdeS in a method For the paRtial load COntroL Of InterNal CombusTiOn eNgineS which IS hiGhly rEliablE iN operaTion, yEt Is simple And can be realized by contrOls knoWn as sUch In the prioR arT.
theSe and otheR objEcts, featurEs, aNd aDvantAgeS Of the PresENt InvENtion Will BEcome more APpAreNT FrOm the followING DesCriptIon OF two prEferRed methods for the pARtial load contrOl of INTerNal COmbuStIon engines in acCorDaNCE with the PrEsent inventIon.
The meThOD for tHe partIal loaD controL OF iNTernal CombUstIon engineS wiTh QUantity CoNtROl and wIth iNtErnal cOmbustIOn in SEVeral working spacEs essENTiallY ConSists In That witH A decReasing loaD the number oF workiNg or Power Strokes WiTh inteRnaL cOmbustion iS IncreasinGly reDuced peR tIme uNit In favoR of sUBSequeNt afTeR-exPansion stROKeS.
in OnE MetHod oF this TyPe acCording to THe presenT inVEntion, aN iNcrEASing
 also the cylinders whichare not su pplie d w ith  f uelhave  to produce ch a rgeexchange work. In orde r tore d ucet he  prop ortiono ft h e c ha rg e e xc h an ge wo rkwhich f all on the  la tt er cylinder, me thods arekno wn in the pr ior  art i nwhi c h the  va lvesof the corres ponding c yl i ndersa re rend e r ed  ino perable, i.e., ar e  h a lted.
The pres ent in ve n ti o n  is  co ncerned wi th  thet ask tof ur t h e r i m prove the eff iciency wit h  amethod  o f t h e type  desc ri b edhereinabove .
Th e underly ing pr o blems a r e solve d acco rdi ngto t h epr ese nt inv e nt ion inthat anin cr easin g pa r t o f th e w orki ng sp aces are chan ged -ove r  to  an a fter- expa ns ion o perati on wh ic h includes a nu mber  of displ ace me nt-  a nd af t er-exp ans ion  cycles  divisi b leby t w o,  whereby the opera ti n g  g as which  is on l yin c ompletel yexp ande d in th e no n -c hanged-o ver wo r ki ng  spaces  i n a re sp ect ive  work i ng c ycle,is fed t o the changed-over w o rking spacesi ns t e ad of a  fr esh mixture  and is c onti n ue d t o  be e xpand ed wi t hin the same or inth at wit h a d ecreasing loa d all work i n g  spacesarec ha n ged-over incre asing ly to a hi g her numb er of  cyclesor stroke s ,  whereby  an  in cre asi n g  n umber of afte r - fill  a nd afte r-e xpansio n s tro kepai rs  followsa respec ti ve  o pe rat ing c y cle cont ai nin ga p owers trokewithinte rn al com bustion en g i ne.Th emeth odac cordi ng t o  th e prese nt invent ion is p re fe rably s uitable for i nt ernal comb us tio n engi n e s with q uantity control.
Accord i ngly, i t i s anobje ct of the  pr esentinv e ntionto pro videamet h o d for t he  pa rt ial load c o n tro l ofin tern al comb ustion engines whi c h a voids by simp lemean s th e a f or e men ti o ned s hortcomings and  drawbacks  e n co untered in the  p rior ar t.
Anot her o b ject of  the pres ent inven ti on r e s ide s in a met hod forthe parti a l loa d  c ontro l o f inte rn alcombu stione ngi nes i n whic hthe ef ficie nc y is imp roved.
A further object  of th e pre sen t inventi onr esi des in ameth od for the  pa rti al lo adc ontro l of in ter n al co mbus t ion engin e sinw h ic h wasted ch a r g e-e xchan gew ork is  min imized.
Still ano t her object ofthep r ese nti nven ti on resides ina m et h o d for th epartial loa d contro lo f int ernalcombus tion en g i ne s  which  ishig hly relia ble  i n  operat io n, yet is  sim pl e andcan be real i z ed by controls k nowna s  such inthe p ri or art. Thes e and othe r objects,featur es,and a dvantag es  of th e p re sent inven t ion willbecom e moreap pare ntfrom t he f o l lowin g de sc rip tion of t w o  p r ef er r edmeth ods f or  the  partiall oad cont rol of inte rn alc o mbusti o ne n gines in a cco rdanc e with the p r esen t  i n venti on.
Th e meth od fort hepa rtial l oad c ontrol of  internal com bu stio n engine swith  q uan ti ty control andwith int ernal co m b ustion  in seve r al wor ki ng spaces es senti al l y consi s t s i n thatw ith  adec reas ing  loa d  the number of working o r po wer s t rok es wi th in te rnal com b usti on is in c reasingly red uced per time u n iti n fa vor of  s ubsequent  af t er-ex pans ion  str oke s.
I n onem etho d  o f th is typ e ac co rd ing to th epresent inve n tio n, a n inc re as i ng 
 also_the cylinders_which are not supplied_with fuel_have_to produce_charge_exchange work. In_order to reduce_the proportion of the_charge exchange work_which_fall on the latter cylinder, methods are known in the prior art in which_the_valves of_the_corresponding_cylinders are rendered inoperable, i.e.,_are halted.
The present invention is_concerned with_the task to further improve the efficiency with_a_method of the_type described hereinabove.
The underlying problems are solved according to_the present invention in that an_increasing part of_the_working_spaces are changed-over to_an after-expansion operation which includes a_number of displacement- and after-expansion cycles_divisible by two, whereby the operating gas_which is only incompletely expanded in_the non-changed-over working spaces in_a respective_working cycle, is fed to_the changed-over working_spaces instead_of a fresh_mixture and is continued to be_expanded within the_same or in that with a_decreasing_load all working_spaces_are_changed-over increasingly_to a higher_number_of cycles_or_strokes, whereby an increasing number of_after-fill_and after-expansion stroke pairs follows a respective_operating cycle containing a_power_stroke with internal combustion_engine.
The method according to the_present invention is preferably suitable for_internal combustion_engines with_quantity control.
Accordingly, it is an object of the present invention to_provide a method for the partial_load control of internal_combustion engines_which_avoids by simple_means_the aforementioned_shortcomings and drawbacks encountered in the prior_art.
Another object_of the present invention resides in_a method for the_partial_load control of internal combustion engines_in which the efficiency is improved.
A_further object of the present_invention_resides_in a method for the_partial load control of internal combustion_engines in which_wasted charge-exchange work is minimized.
Still another object_of_the present invention resides in a_method_for the partial load control of_internal_combustion_engines which is highly reliable_in operation, yet is simple and_can be realized by controls known as such in_the prior art.
These_and other objects, features, and_advantages_of_the present invention will become more apparent from the following_description of_two preferred methods_for the partial load control of internal combustion engines in_accordance with the present invention.
The method for_the partial load control of internal combustion engines with quantity control_and with internal combustion in several working spaces_essentially consists in that with a decreasing_load the number of_working_or power strokes with internal combustion is_increasingly_reduced_per_time unit in_favor of subsequent_after-expansion strokes.
In one_method of_this type according_to the_present invention, an_increasing