Auto Manual of VW Passat B5

VW Passat
The maintenance instruction
1. Maintenance service
2. Engines
3. Cooling system
4. Fuel system
- 5. Engine management
   5.2. Work of a control system as the engine
   5.3. Check of system of injection of fuel
   5.4. Gauges and executive mechanisms of a control system of the engine
   - 5.5. Ignition system
      5.5.1. System of direct ignition (except engines 1,6-I ADP)
      5.5.2. System of ignition with the ignition distributor (the engine 1,6-I ADP) The ignition distributor
    5.6. A fuel highway and fuel atomizers
   5.7. The basic malfunctions of a control system of the engine
6. An exhaust system
7. Transmission
8. A running gear
9. A steering
10. Brake system
11. A body
12. Heating, ventilation
13. An electric equipment


5.5.2. System of ignition with the ignition distributor (the engine 1,6-I ADP)

It is contactless system of ignition. Instead of the breaker the ignition distributor is supplied, not demanding leaving, the Hall gauge. The gauge contactless, microelectronic, is based on use of effect of the Hall. This effect consists in occurrence of cross-section electric field in a plate of the semiconductor with a current at action on it of a magnetic field. The gauge consists of a constant magnet, a semiconductor and microcircuit plate. Between a plate and a magnet there is a backlash. In a gauge backlash there is a steel screen with cuts. When through a backlash passes a screen cut on a semiconductor plate the magnetic field operates and from it the potential difference acts in film. If in a backlash there is a screen body magnetic power lines become isolated through the screen and on a plate do not operate. In this case the potential difference on a plate does not arise. On the basis of signals of the gauge of the Hall, the ignition block includes or switches off a current in a primary winding of the coil of ignition.

The block of management of ignition contains the ignition coil, a control system of the coil of ignition and system of restriction of capacity in one case.