2.2.1.1. General information

The nozzle by means of which the distributed phase injection of gasoline is made is installed in the inlet channel of each cylinder of the engine.
Air comes to cylinders of the engine through regulated throttle knot and at the same time via the electronically controlled bypass (roundabout) channel executed bypassing a butterfly valve.
Ignition of fuel-air mix in cylinders is made by means of high-voltage spark categories which are formed on spark plugs from two two-output coils of ignition operating respectively ignition of the first or fourth and second or third cylinders.
Adjustment of toxicity of the fulfilled engine gases on the idling modes by means of the adjustment screw is provided in a control system WITH.
Elements of an electronic control system do not demand manual adjustment of frequency of rotation of idling, a corner of an advancing of ignition and amount of fuel-air mix, and also maintenance in use. The control unit, sensors and electromechanisms of system are not maintainable, and in case of their refusal are subject to replacement by serviceable elements.
The electronic control system of the engine provides: automatic launch and warming up of the engine, maintenance of the minimum frequency of rotation of idling, shutdown of supply of fuel when braking the car, flexible switching from the mode of partial loads of the mode of full capacity of the engine and back depending on rates of management of a pedal of the drive of a butterfly valve, management of feedback on a detonation and concentration of oxygen in the fulfilled engine gases, complex self-diagnostics of system, emergency control by the engine at refusal of its separate elements and other functions.
Control of electronic system is exercised from the control unit of the engine having the built-in microprocessor. The control unit accepts information from the installed sensors on the working condition of the engine and car that allows it quickly and to operate precisely electromechanical actuation mechanisms.

Fig. 47. The schematic diagram of the feed and control system the engine with gasoline injection: 1 – right tank; 2 – left tank; 3 – jet pump;
4 – filter of rough purification of fuel; 5 – electric fuel pump;
6 – filter of thin purification of fuel; 7 – fuel stage; 8 – fuel pressure regulator; 9 – nozzles fuel; 10 – valve of the fuel tank; 11 – air filter; 12 – sensor of a mass consumption of air; 13 – sensor of provision of a butterfly valve; 14 – throttle device; 15 – air temperature sensor; 16 – receiver of an inlet pipe; 17 – idling regulator; 18 – control unit of the engine (controller); 19 – coil of ignition of the 1st and 4th cylinders; 20 – coil of ignition of the 2nd and 3rd cylinders; 21 – sensor of temperature of cooling liquid; 22 – spark plugs; 23 – sensor of provision of a bent shaft; 24 – a damper of a bent shaft with sinkhrodisky; 25 – sensor of position of the camshaft; 26 – fuel pressure sensor; 27 – stopper of the fuel tank; 28 – detonation sensor; 29 – the screw of toxicity of idling (on the sensor 12 of a mass consumption of air); 30 – pedal of the drive of a butterfly valve; 31 – the sensor of content of oxygen in the fulfilled gases; 32 – converter


The block diagram of system with microprocessor management of injection of gasoline and ignition is represented in fig. 47.
The system of injection of gasoline of engines consists of the following main subsystems having the features of design:
power supply system;
– system of production of the fulfilled gases;
– a control system of supply of fuel and ignition by means of the microprocessor block.
The links to various sensors and executive electro-mechanisms installed in power supply systems of the engine and release which are found in the text of the present manual
the fulfilled gases, are provided in the section "Features of System of Electronic Control by Injection of Fuel and Ignition".