Ignition system, general
The ignition system is used to generate the igniting spark, measure the combustion quality and knocking. It comprises four inductive ignition coils, one for each cylinder, with integrated power stage and ionization current measurement, CDM (Combustion Detection Module) that carries out initial processing of the ionization signal from the respective ignition coils. The ignition system receives four ignition trigger signals from the ECM and delivers two combustion signals plus one knock signal to the ECM. The ignition coils are screwed on above the spark plugs of the respective cylinders with an aluminum cover over them. The ignition coils are individually exchangeable. CDM is located on a bracket on the left-hand side of the cylinder head.