The inductive type camshaft position sensor is mounted on the cylinder head. The sensor generates a signal at the moment of passage in its magnetic field of a marker made in the form of a plate mounted on the valve camshafts. The appearance of a signal indicates the presence of a compression stroke in the first cylinder of the engine and serves to synchronize the operation of all subsystems.
Since the subsystem is completely controlled by the ECM-ECU, the ignition timing is completely dependent on the crankshaft speed and the degree of filling of the combustion chamber with the working mixture.
The moment of ignition is directly related to the combustion process taking place in the engine chamber, information about which is carried by the knock sensor. The minimum fuel consumption is due to the maximum possible compression ratio, which can lead to the process of detonation combustion of fuel - detonation (micro explosion). Prolonged exposure to detonation leads to mechanical and irrational destruction of the engine. To eliminate this phenomenon, two piezoelectric sensors are installed on the engine - a knock sensor, which register the oscillation frequencies of the combustion chamber and transmit a signal to the ECU-KCUD, which in turn mixes the ignition moment. One of the sensors controls the processes in cylinders 1-2-3, the other - in cylinders - 4-5-6. The presence of knock sensors allows the engine to operate both on AI-91 gasoline and AI-98 gasoline.
Manual adjustment of the ignition timing is not possible, everything is determined by the ECU-KSUD program. The ignition system does not require any adjustments and maintenance during operation.
The composition of the ignition system is as follows:
- Siemens control unit;
- ignition coil (6 pcs.);
- camshaft position sensors;
- crankshaft speed sensor;
- knock sensor (2 pcs.);
- spark plug (6 pcs.).