Audi 100/A6

1990-1997 of release

Repair and car operation

Audi 100/A6
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 3.2. Diesel engines
+ 3.3. Removal and partition of engines
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
- 8. Systems of start, ignition
   + 8.1.1. Introduction
   - 8.2. Ignition system (petrol engines)
      + Principle of work of PMS
      8.2.2. Technical characteristics
      8.2.3. Check of system of ignition
      8.2.4. Ignition coil
      8.2.5. Ignition distributor
      8.2.6. Corner of an advancing of ignition
      8.2.7. Sensors of system of ignition
      8.2.8. Begunok of the ignition distributor
      8.2.9. Ignition system (6-cylinder engines 2,6 and 2,8 of l)
      8.2.10. Diagnostics of malfunctions of system of injection of gasoline
      8.2.11. That it is necessary to know to the owner of the car with the injector engine
      8.2.12. Turbo doctor
   + 8.3. System of prestarting heating (diesel engines)
   + 8.4. System of production of exhaust gases
+ 9. Transmission
+ 10. Brake system
+ 11. Suspension brackets, steering
+ 12. Body
+ 13. Electric equipment
+ 14. Good advice


8.2.9. Ignition system (6-cylinder engines 2,6 and 2,8 of l)


These engines have no ignition distributor. At 6-cylinder engines of 3 dual coils of ignition. Dual coils of ignition are in front of a head of cylinders. They cope the control unit system of injection of gasoline via the target cascade of tension which is strengthened on a forward wall of the car in a motor compartment. Thus one dual coil of ignition provides with tension of ignition one pair cylinders. During the same moment of ignition the dual coil makes at the same time two sparks. And, depending on the circumstances, one dual coil of ignition submits a high voltage to that pair of cylinders at which pistons at the same time come to VMT.


At the 6-cylinder engine one spark plug develops a spark on a step of compression of the cylinder 1 while other candle at the same time develops a spark on a step of release of the cylinder 6. Only for this purpose "single ignition" tension about 1 quarter moves. Therefore it does not cause the increased wear of spark plugs.

Through one turn of a cranked shaft the cylinder 6 is on a step of compression and the cylinder 1 on a release step. For cylinders 2 + 4 and 3 + 5 this process proceeds similarly.