S40/V40
1. General information
2. Operation and maintenance of the car
3. Design and technical characteristics of engines
4. Repair of the engine
5. Transmission
6. Brake system
7. Forward suspension bracket and steering
8. Back suspension bracket
9. Control system of the Fenix 5.1 engine
9.1. Description of system
9.1.1. Sensors of pressure and air temperature
9.1.2. Oxygen sensor
9.1.3. Sensor of position of the camshaft, frequency of rotation and provision of a bent shaft
9.1.4. Sensor of temperature of cooling liquid and detonation
9.1.5. Sensor of provision of a butterfly valve
9.1.6. Management of fuel system
9.1.7. Management of system of ignition
9.1.8. Idling regulator
9.1.9. Control of the cooling system fan
9.1.10. Control of the air conditioner compressor
9.1.11. Output signals of the control unit
9.2. Diagnostics
10. Electric equipment. Conducting and components
11. Body
12. Schemes of electric equipment
 



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9.1.1. Sensors of pressure and air temperature

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.

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9.1. Description of system
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9.1.2. Oxygen sensor