Fig. 9.1. Control system of the Fenix 5.1 engine: 2/14 — the system relay of the engine; 3/1 — the ignition switch; 4/1 — the block of system management of the Fenix 5.1 engine; 6/13 — the fuel pump; 7/15 — the heated sensor of oxygen (HO2S); 7/21 — the RPM meter (RPM) of the petrol engine; 7/22 — the sensor of absolute pressure in a collector (MAR sensor); 7/23 — the sensor of temperature of cooling liquid of the engine (EST); 7/24 — the sensor of temperature of entrance air; 7/25 — the sensor of provision of a butterfly valve; 7/26 — the sensor of a detonation (KS); 7/27 — the sensor of position of the camshaft; 8/2 — the regulator of idling (IAC); 8/6, 8/7, 8/8, 8/9 — nozzles; 8/12 — the valve of a purge of the coal filter (SR); 10/51 — a precautionary lamp of temperature of exhaust gases; 11/2 — the block of safety locks in passenger salon; 24/20 — the 22-contact socket of a plait of passenger salon (C), a plait of a compartment of the engine (A) (gray); 24/23 — the 22-contact socket of a plait of passenger salon; 24/27 — the 12-contact socket of a plait of a compartment of the engine (A) — a plait of the module of engine management (ESM); 24/33 — the 4-contact socket of a plait of the module of engine management (unified social tax) (B) (Q); 31/25 — a ground contact under the dashboard

Value of depression and temperature of the soaked-up air are measured in the inlet pipeline of the engine by the electronic sensor of pressure of 7/22 (fig. 9.1) and the sensor of temperature of the soaked-up air 7/24.

Signals from sensors are used by BU for calculation of loading of the engine.

Fig. 9.3. Schedules of characteristics: and — pressure sensor in the inlet pipeline; — the air temperature sensor

With BU on the sensor of pressure the supply voltage of 5 V. Progib, and as a result diaphragm resistance moves, changes in process of change of pressure. These changes are registered the electronic scheme which forms and strengthens a signal in such a way that the output signal of the sensor changes ranging from 0,5 to 5 V, depending on pressure (fig. 9.3). With BU on the sensor of air temperature rated voltage 5 V. Soprotivleniye of the thermoresistor and consequently also tension of a signal changes depending on temperature of the soaked-up air moves.