The Trionic 8 is an advanced engine management system in the Trionic series, created by Saab Automobile. It is used in both Saab 9-3 and Opel Vectra vehicles, and is available with 150, 175 and engines. It will also be used for a flexifuel version starting production spring 2007. Saab Trionic T8 has been developed by Saab and is a very advanced engine management system. The Engine Control Module (ECM) is used principally to regulated the air mass, fuel and ignition timing. Functionality Trionic monitors ionization rates at each spark plug to individually control and adjust the combustion process for each cylinder. Other primary functions are: Ignition timing Fuel injection Turbo boost pressure Air mass measurement Throttle Throttle regulation Trionic 8 calculates how much power the driver wants as early as possible to avoid turbo kick or lag, therefore making driving smooth. As the driver depresses the accelerator pedal, it acts on a pedal position sensor integrated in the pedal bracket. This information, in the form of a voltage, is connected to the ECM which converts the voltage value to a torque request from the driver. The torque request is then processed by the ECM with regard to current operating conditions and limitations. The result is an air mass request to achieve the torque requested by the ECM. The driver's requested torque can be higher than that requested by ECM when, for example: Maximum engine torque at the current operating point has already been attained The traction control system (TCS) intervenes the knock control system intervenes The ECM regulates the throttle area (opening angle) together with the turbo wastegate so that the correct torque is attained, i.e. air mass per combustion. Fuel injection is sequential and regulated with air mass per combustion and engine speed as parameters. Advantages This system has the following advantages: Turbocharger delay can be almost eliminated Exhaust emissions are reduced during changes in load Idle speed control is integrated Load compensation is possible over the entire load and engine speed range Efficient engine torque limitation is achieved over the entire load and engine speed range Cruise control can easily be integrated into the system Ignition Ignition takes place with individual ignition coils placed on the respective spark plug. The spark plugs, together with the ignition coils and combustion detection module (CDM), are used to detect combustion and possible knocking. This means there is no need for