Audi 80/Avant (B4) |
Audi 80/Avant The description Engines System of release of the fulfilled gases Cooling system Fuel tank and the fuel pump The air filter and intake channels Injection system Coupling Transmission and transmission Suspension bracket and steering Brake system Antiblocking system of brakes Wheels and tyres body electrosystem - Ignition system Various systems of ignition Principle of work of ignition Executive office System "brain" 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 Spark plugs Check of the moment of ignition Illumination Signalling devices Devices and auxiliary devices Heating and ventilation Body elements Search of malfunctions Specifications |
Regulation on a detonation Except engines of 66 kw The detonation combustion arising if the ignition moment too far has been moved aside ignition 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 combustion He "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 Nm, 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 Nm. |
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