Audi 80/Avant (B4)
Since 1991-1995 of release
Repair and car operation
+ The description
+ System of release of the fulfilled gases
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and воздухозаборные channels
+ Injection system
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Antiblocking system of brakes
+ Wheels and tyres
+ Kuzovnaja electrosystem
- Ignition system
Various systems of ignition
Principle of work of ignition
Impulses for the management block
Regulation on a detonation
Security measures at work with ignition system
Repair of system of ignition
Diagnostics of system of ignition
The ignition distributor
The gauge of detonation combustion
High voltage elements
Replacement of spark plugs
Check of the moment of ignition
+ Signalling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
ĐÓýÓ ´ţńţßÝÓ ŔÝ˘ţýÓ÷Ŕ ňńˇŕ˛ţű NMRV šńň˝Ř.
Regulation on a detonation
Except engines of 66 kw
The detonation combustion arising if the ignition moment too far has been moved aside źignition advancings╗, harms to the engine. A consequence of it are the overheat, damage of bearings and pistons.
Principle of action of regulation on a detonation
Combustion in cylinders is supervised by the so-called gauge of detonation combustion which is located at models with 4 and 5-cylinder engines at the left on the block of cylinders. Models with 6-cylinder engines are supplied by two sensor controls on the right and at the left above on the block of cylinders. The gauge of detonation combustion "feels", if at combustion in the cylinder there are non-uniform fluctuations instead of the usual uniform. It transfers this information further to the management block.
The gauge of detonation combustionHe "listens", whether is not present in detonations: the gauge of detonation combustion (arrow) at the 4-cylinder engine of 85 kw (at the left) and at the 5-cylinder engine is located by capacity on an engine left-hand side. For models with the 6-cylinder engine (on the right) is available two gauges of detonation combustion: on one on the right and at the left above under a final collector. Important: the fixing bolt of the gauge of detonation combustion should be tightened precisely the moment 20 Н•м, differently the gauge does not work.
The slice is inserted into this gauge пьезокерамики, a material with which we are familiar on lighters (gives out a spark). Mechanical forces (a stretching, compression), influencing on пьезокерамику, are transformed by it to electric pressure. – arising because of detonation combustion – it is enough non-uniform fluctuations for sensor control activation. Important: the moment of an inhaling of the gauge of detonation combustion should make precisely 20 Н•м.