Audi A4

since 1994 release

Repair and operation of the car



A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ System of an exhaust
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and channels of absorption
+ System of injection
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
- System of ignition
   That provides ignition
   When there is an ignition of fuel and air mix?
   Different systems of ignition
   So there is an ignition spark
   Executive body
   Brain of system
   The signals coming to the control unit
   Adjustment of a detonation
   Be careful in the address with ignition
   Works on system of ignition
   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





Different systems of ignition

  • In the 74 kW engine the system of ignition of Motronic with the distributor is installed. In this engine ignition installation since adaptation of the moment of ignition to each situation in operation of the engine is is carried out becomes in exclusively electronic way.
  • In the 92 kW engine the system of ignition of Motronic without distributor is installed. In this system of ignition it is the share of two cylinders on one coil of ignition. It gives a spark while it is necessary for one of two cylinders. It does excessive the ignition distributor. Side effect of such division: each cylinder receives for one running cycle on an exhaust step one more (unnecessary, but harmless) a spark.
  • The 110 kW four-cylinder engine is also equipped with system of ignition of Motronic without distributor. Difference from the 92 kW engine: here each cylinder has the coil of ignition with own management. The unnecessary spark is not present, and each cylinder can separately cope.
  • The system of ignition of MPI and MPFI of the six-cylinder engine is a component of management of operation of the engine. Here, as well as in the 92 kW engine, it is the share of each two cylinders on one coil of ignition.









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