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
      5.1.9. 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





5.1.4. A control system in temperature of air submitted to the engine

GENERAL INFORMATION

The system (one-dot injection) copes the vacuum switch sensitive to temperature established in a casing of a throttle. When the air temperature, passing through a throttle, below 35 ° With, the vacuum switch is open, allowing depression of an inlet collector to influence an air diaphragm of the valve of regulation of temperature in the basis of a casing of the air filter. The vacuum raises a diaphragm and moves the valve of a folding shutter of an air inlet therefore in the engine the air which has been warmed up about a final collector arrives.

At increase in temperature of arriving air at the expense of heating its final collector, the wax capsule in the vacuum switch closes the switch, blocking vacuum to the valve of adjustment of temperature of arriving air. As the vacuum is blocked, the folding shutter of an air inlet moves and closes regulating valve at temperature about 40 ° S.Pri etom in the engine only cold air from a forward part of the car arrives.

Check

Cool the engine, then separate the inlet channel from a forward part of a casing of the air filter. The valve of a folding shutter of the regulating valve should block intake of hot air. Start the engine. The folding shutter thus should rise and block immediately intake of cold air and, after engine warming up, should move and open giving of only cold air.

To check the vacuum switch, disconnect a vacuum pipe from the regulating valve and close a tube a finger. At operation of the cold engine in a tube the vacuum should be felt, and after engine warming up to normal working temperature the vacuum should be absent.

To check operation of the valve of adjustment of temperature of arriving air, separate the inlet channel from a casing of the air filter. The valve of a folding shutter should close intake of hot air in the engine. Disconnect a vacuum pipe and create in it depression. Thus the folding shutter should move and block intake of cold air in the engine.