3.4.3. Direct system of ignition

The system of ignition in the engine with a working volume of 1998 cm3 the XU10J4 model (with 16 valves) has "direct" type. Components of system consist of two modules amplifiers, four coils of ignition and the sensor of a detonation. The system of ignition is combined with system of injection of fuel in a control system of the ECU engine (via blocks of the amplifier of ignition).

Each block of the amplifier of ignition operates two coils of ignition: combined with candle tips and established directly on spark plugs, one coil on a candle. It excludes application of high-voltage wires. ECU uses entrances from various sensors to calculate the required installation of a corner of an advancing of ignition and time of accumulation of energy the ignition coil.

The sensor of a detonation is installed on a head of the block of cylinders and prevents a detonation in cylinders under loading. The sensor is sensitive to vibration and finds a detonation which occurs when fuel mix in cylinders burns down with a detonation. The sensor of a detonation sends an electric signal to the ECU block which, in turn, reduces installation of a corner of an advancing of ignition while to the detonatsiyena stops.