The inductive camshaft position sensor is mounted on the cylinder head. The sensor generates a signal when a marker, made in the form of a plate mounted on the valve camshafts, passes through its magnetic field. The appearance of the 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 ECU-KSUD, the ignition timing angle completely depends on the crankshaft speed and the degree of filling of the combustion chamber with the working mixture.
The ignition timing is directly related to the combustion process occurring in the engine chamber, information about which is provided by the knock sensor. The minimum fuel consumption is determined by the maximum possible compression ratio, which can lead to the process of detonation combustion of fuel - detonation (micro explosion). Long-term exposure to detonation leads to mechanical and irradiation destruction of the engine. To eliminate this phenomenon, two piezoelectric sensors are installed on the engine - detonation sensors, which record the vibration frequencies of the combustion chamber housing and transmit a signal to the ECU-KSUD, which in turn mixes the ignition timing. One of the sensors monitors processes in cylinders 1-2-3, the other - in cylinders - 4-5-6. The presence of detonation sensors allows the engine to operate on both 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 or 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 plugs (6 pcs.).