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Audi A3since 1997 of releaseRepair and car operation |
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Audi A3 + Maintenance instruction + Current leaving and service + Engine + Systems of cooling, heating + the Power supply system and production of the fulfilled gases - Engine electric equipment + System of electronic control by ignition and injection - Charge and start systems Storage battery Removal and installation of the storage battery Check of the storage battery The generator - general information and security measures Check of the established generator Removal and generator installation Check and replacement of brushes of the generator and tension regulator Starter - general information Check of system of start of the engine Removal and starter installation Check, removal and installation of the traction relay of a starter + Manual box of gear shifting + Automatic transmission and models with a full drive + Coupling and power shafts + Brake system + Suspension bracket and steering + Body + Onboard electric equipment + Elektroskhema 
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The generator - general information and security measures
In the car the generator of an alternating current is established. At installation of the additional electric equipment check, that capacities of the generator was enough for a food of this equipment. The drive of the generator is carried out by a maple belt from a cranked shaft of the engine. The generator represents the three-phase synchronous electric car with electromagnetic excitement. For transformation of an alternating current in constant the rectifier is built in the generator on diodes. Tension is regulated by the built-in microelectronic regulator of tension. At operation of the generator the electric current proceeding on a winding of excitement, creates a magnetic stream round rotor poles. At rotor rotation under each tooth of a stator passes that southern, the North Pole of a rotor and the working magnetic stream passing through teeth of a stator, changes on size and tension. This variable magnetic stream creates an electromotive power in a stator winding. The wedge-shaped form of polar tips of a rotor is picked up in such a manner that allows to receive the form of a curve electromotive power close to the sinusoidal. At high frequency of rotation of a rotor of the generator when tension of the generator becomes more than 13.6 – 14.6 In, a regulator tension is locked and the current does not pass through a winding of excitement. Tension of the generator falls, the regulator opens and again passes a current through an excitement winding. The frequency of rotation of a rotor of the generator is higher, the it is more time of the locked condition of a regulator, therefore, the more strongly tension on a generator exit decreases. Process of locking and unlocking of a regulator occurs to high frequency therefore tension fluctuations on an exit of the generator are not appreciable, and it is almost possible to consider it to the constants supported at level 13.6. – 14.6 Century. ATTENTION
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