Audi 80/Avant (B4)

Audi 80/Avant
The description
System of release of the fulfilled gases
Cooling system
Fuel tank and the fuel pump
The air filter and intake channels
Injection system
Transmission and transmission
Suspension bracket and steering
Brake system
Antiblocking system of brakes
Wheels and tyres
- body electrosystem
   Minus to "weight"
   Orientation in electrosystem
   Plug connections
   The central switchboard
   The additional block of the relay
   The relay and management blocks
   The unloading relay of contact Х
   Safety locks
   The table of safety locks
   Electric schemes
    The full electroscheme of car Audi 80: the 2-litre 4-cylinder engine (66 kw)
    The 2-litre 4-cylinder engine (85 kw)
    The 2,3-litre 5-cylinder engine (98 kw)
    The 2,6-litre 6-cylinder engine (110кВт)
    Additional equipment
    The storage battery
    The generator
   Condition check wedge or wedge a belt
   Tension wedge a belt
   Tension wedge or semi wedge a belt
   Torn wedge a belt
   Overheat of the engine because of damage wedge a belt
   The review wedge and semi wedge belts
   Replacement wedge a belt
   The list of malfunctions
   The list of malfunctions
Ignition system
Signalling devices
Devices and auxiliary devices
Heating and ventilation
Body elements
Search of malfunctions

The unloading relay of contact Х

In onboard electric system the unloading relay of contact Х (by the way, the simple switching relay) plays a considerable role. Therefore here the principle of its work is described.

Contact Х of the lock of ignition receives a food, only if the ignition key costs in position "trip". Through this plug powerful consumers of a current, such as a screen wiper, heating of back glass or the fan that at engine start all "force" of the storage battery went for starter work are connected. Certainly, not all these consumers can receive the food through contact in the ignition lock; for this purpose it is too weak. Therefore between them relay connection is necessary, and supply by a food is carried out through it. Contact of the lock of ignition answers (along with supply of headlights by a food) only for a switching current to the relay.