Opel Vectra B

since 1995 of release

Repair and car operation



Vektr B. Opel
+ 1.1. Governing bodies and control devices
+ 2. Maintenance
+ 3. Engines
+ 4. Heating, ventilation
- 5. Fuel system
   - 5.1. Fuel system of petrol engines
      5.1.1. Introduction
      5.1.2. Technical characteristics
      5.1.3. Air filter and inlet channels
      5.1.4. A control system in temperature of air submitted to the engine
      5.1.5. Accelerator cable
      5.1.6. Accelerator pedal
      5.1.7. Fuel
      - 5.1.8. System of injection of fuel
         5.1.8.1. One-dot system of injection of fuel of the SOCH engine of 1,6 l
         5.1.8.2. Multipoint system of injection of Multec-S fuel of the DOCH engine of 1,6 l
         5.1.8.3. Multipoint system of injection of Simtec 56.5 fuel of engines 1,8 and 2,0 of l
      5.1.9. Pressure removal in fuel system
      5.1.10. Fuel pump
      5.1.11. Fuel level sensor
      5.1.12. Fuel tank
      5.1.13. Throttle case
      5.1.14. Check of system of injection of fuel
      5.1.15. Elements of one-dot system of injection of fuel
      + 5.1.16. Elements of multipoint system of injection of fuel
      5.1.17. Inlet collector
      5.1.18. Final collector
      5.1.19. System of production of exhaust gases
   + 5.2. Fuel systems of the diesel engine
+ 6. Systems of start, ignition
+ 7. Transmission
+ 8. Brake system
+ 9. Running gear
+ 10. Body
+ 11. Electric equipment
+ 12. Main malfunctions





5.1.8.2. Multipoint system of injection of Multec-S fuel of the DOCH engine of 1,6 l

GENERAL INFORMATION

Multipoint system of injection of Multec fuel - S of the DOCH engine of 1,6 l

1. Sensor of provision of a cranked shaft
2. Detonation sensor
3. System of repeated burning of exhaust gases
4. Throttle potentiometer
5. Step-by-step engine of management of idling turns
6. Mardatchik
7. Catching system паров fuels
8. Ignition block
9. Oxygen sensor
10. The sensor of temperature of cooling liquid
11. The sensor of temperature of air arriving in the engine
12. Camshaft sensor

The Multec system – the incorporated system of ignition and fuel injection, also turns on the catalyst, an allocation control system паров fuels and system of repeated burning of exhaust gases.

The fuel pump shipped in a fuel tank, submits fuel from a tank to a fuel nozzle via the filter. Pressure of fuel in system copes a pressure regulator. The regulator allows excess of fuel to come back to a fuel tank at pressure excess in fuel system.

The electric control system consists of the ECU block together with the following sensors:

 – the potentiometer of a butterfly valve reports to the ECU block the provision of opening or butterfly valve closing;
 – the sensor of temperature of cooling liquid reports to the ECU block engine temperature;
 – the sensor of temperature of air arriving in the engine reports to the ECU block temperature of air arriving in the engine;
 – the sensor of oxygen reports to the ECU block the content of oxygen in exhaust gases;
 – the sensor of provision of a cranked shaft reports to the ECU block frequency of rotation of the engine and the provision of a cranked shaft;
 – the sensor of a detonation established in the block of cylinders is used for detection of the beginning of a detonation or early ignition;
 – the sensor of provision of a camshaft reports to the ECU block the provision of a camshaft;
 – the sensor of absolute pressure in a collector reports to the ECU block depression in an inlet collector;
 – the sensor of the ABS block reports to the ECU block relative speed of the car;
 – the switch of the compressor of central air of air reports to the ECU block about central air inclusion.

All information from sensors is analyzed by the ECU block and on this basis the block defines the corresponding corner of an advancing of ignition and structure of a fuel mix. The ECU block operates fuel nozzles, defining width of an impulse, that is an interval of time, when the nozzle is open to provide richer or poorer fuel mix. Multec-S – consecutive system of injection of fuel, that is each of four fuel nozzles opens before opening of the inlet valve.

The ECU block also supervises idling turns. For this purpose there is the step-by-step engine operating the provision of a butterfly valve.

The ECU block also operates composition of exhaust gases and an allocation control system паров fuels.

If there is a mistake in any of the data received from sensors, ECU enters into a way of the doubler. In this case the ECU block ignores the wrong signal of the sensor and accepts previously the programmed value which allows the engine to continue work, though with smaller efficiency. If ECU enters into a way of the doubler, the lamp of the alarm system on combinations of devices and damage will light up will be written down in memory of ECU. After that it is necessary to carry out complete test of a control system by the engine, using the special electronic diagnostic test bench which simply joins in the diagnostic socket of system. The socket is located behind the central console. Thus for access to it it is necessary to remove decorative furnish in front of the lever of the hand brake.