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Audi A3Since 1997 of releaseRepair and car operation |
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Audi A3 + The maintenance instruction + Current leaving and service + The engine + Systems of cooling, heating + The power supply system and release of the fulfilled gases - Engine electric equipment + System of electronic control by ignition and injection - Charge and start systems The storage battery Removal and installation of the storage battery Check of the storage battery The generator - the general data and security measures Check of the established generator Removal and generator installation Check and replacement of brushes of the generator and pressure regulator Starter - the general data 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 a gear change + Automatic transmission and models with a full drive + Coupling and power shafts + Brake system + Suspension bracket and steering + Body + Onboard electric equipment + Electroschemes |
The generator - the general data and security measures
In the car the alternating current generator is established. At installation of the additional electric equipment check up, that capacities of the generator was enough for a food of this equipment. The generator drive is carried out клиновым by a belt from a cranked shaft of the engine. The generator represents the three-phase synchronous electric car with electromagnetic excitation. For transformation of an alternating current in constant the rectifier is built in the generator on diodes. Pressure is regulated by the built in microelectronic regulator of pressure. At work of the generator the electric current proceeding on a winding of excitation, creates a magnetic stream round rotor poles. At rotor rotation under each tooth статора passes that southern northern pole of a rotor and the working magnetic stream passing through teeth статора, varies on size and pressure. This variable magnetic stream creates in a winding статора electromotive power. The klinoobraznaja form of polar tips of a rotor is picked up in such a manner that allows to receive the form of curve electromotive power close to the sinusoidal. At high frequency of rotation of a rotor of the generator when pressure of the generator becomes more than 13.6 – 14.6 In, a regulator pressure is locked also a current through a winding of excitation does not pass. Pressure of the generator falls, the regulator opens and again passes a current through an excitation winding. The above frequency of rotation of a rotor of the generator, the is more time of a closed condition of a regulator, hence, that pressure on a generator exit more strongly decreases. Process of lock-out and regulator unlocking occurs to high frequency, therefore pressure fluctuations on a generator exit are not appreciable, and it is almost possible to consider to its constants supported at level of 13.6.14.6 Century ATTENTION
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