Audi A4

since 1994 of release

Repair and car operation



A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
- Ignition system
   That provides ignition
   When there is an ignition of a fuel and air mix?
   Different systems of ignition
   So there is an ignition spark
   Executive body
   System brain
   The signals arriving in the control unit
   Detonation adjustment
   Be careful in the address with ignition
   Works on ignition system
   Search of malfunctions in ignition
   Ignition distributor
   Knot of a high voltage
   Replacement of spark plugs
   Right choice of spark plugs
   Check of the moment of ignition
+ Lighting
+ Alarm equipment
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics





Executive body

Terminal cascade

In the terminal cascade the powerful transistor settles down, he switches on and off a current to the ignition coil (or to ignition coils). Thanks to it high currents cannot damage sensitive electronics of the control unit.

Terminal cascades of separate engines settle down:

  • in the engine in capacity of 74 kW near the ignition coil;
  • in the engine in capacity of 92 kW over ignition coils on a head of the block of cylinders;
  • in the four-cylinder engine in capacity of 110 kW under a cover of the case of the air filter;
  • in the six-cylinder engine also under a cover of the air filter.