Audi A4

Since 1994 of release

Repair and car operation



Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
- Ignition system
   That provides ignition
   When there is an ignition of a toplivno-air mix?
   Different systems of ignition
   So there is an ignition spark
   Executive office
   System brain
   The signals arriving in the block of management
   Detonation adjustment
   Be cautious in circulation with ignition
   Works on ignition system
   Search of malfunctions in ignition
   The ignition distributor
   High voltage knot
   Replacement of spark plugs
   Correct choice of spark plugs
   Check of the moment of ignition
+ Illumination
+ The alarm equipment
+ Tools and devices
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics



So there is an ignition spark

  • The main principle of ignition consists that in the beginning the accumulator current passes through a primary winding of the coil of ignition.
  • This winding consists of several coils of a thick wire. Under the influence of a current round the ferromagnetic core of the coil of ignition the powerful magnetic field – energy of ignition is formed.
  • That there was an ignition spark, pressure of the accumulator on the ignition coil is disconnected. It occurs at the command of the management block on so-called «the target cascade».
  • With current deenergizing the magnetic field in the ignition coil disappears. There is a following:
  • In the secondary winding consisting of numerous coils of very thin wire, there is a power-current impulse in some tens thousand volt.
  • This pressure goes to that spark plug which just is on turn as ignition. The Toplivno-air mix ignites, the engine continues to work. The electric chain again becomes isolated, and the new cycle begins.