7.4.1. General information

The system of ignition includes two coils of ignition (And and In) which have the built-in power transistors. One of coils serves cylinders No. 1 and No. 4, another – cylinders No. 2 and No. 3. At the moment of interruption of a current of primary winding of the coil of ignition And on conclusions of its secondary winding the high voltage is directed. The high voltage at the same time moves on spark plugs of the first and fourth cylinders. During this moment in one of cylinders the compression step, and in other – a release step is carried out. Therefore ignition of a toplivovozdushny mix occurs only in that cylinder in which there is a compression. Similarly, at the moment of interruption of a current of primary winding of the coil of ignition In a high voltage moves on candles of the second and third cylinders.

Engine EBU (cars with a mechanical transmission) or engine and AKP EBU (cars with AKP) operates inclusion and switching off of two power transistors which have been built in coils of ignition. Transistors, in turn, operate a current of primary windings of coils of ignition and provide timely ignition of a working mix on engine cylinders. An operating procedure of cylinders – 1–3–4–2.

Engine EBU (cars with a mechanical transmission) or engine and AKP EBU (cars with AKP) establish the moments of an iskroobrazovaniye and sequence of inclusion of power keys on signals of the sensor of provision of the camshaft established on distributive shaft, and the sensor of an angle of rotation of the cranked shaft established on cranked shaft. Depending on power setting. These EBU change value of the actual corner of reflection of ignition. If the engine is not heated-up to working temperature or the car is at big height above sea level, the corner of an advancing of ignition increases (towards an advancing) a little.

At the gear shifting moments the corner of an advancing of ignition decreases for torque reduction a little. Thus process of gear shifting occurs more smoothly.