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Audi A4, S4 Introduction Controls and receptions of safe operation Current leaving and service The engine Systems of cooling, heating and the air conditioner Power supply systems, release and decrease in toxicity of the fulfilled gases - Systems of an electric equipment of the engine Ignition and engine management system System of preheat of the diesel engine Diagnostics of systems of electronic control and the diagnostic equipment - Gymnastics and start systems The general information The storage battery - the basic data and acquisition of the new battery Check and gymnastics of the storage battery Replacement of the storage battery Storage of the storage battery Gymnastics system - the general data and security measures Check of system of gymnastics Removal and generator installation Removal and installation of a regulator of pressure/replacement of brushes System of start of the engine - the general information and safety measures Removal and starter installation Check of system of start of the engine Manual box of a gear change Automatic transmission Coupling, power shafts and differential Brake system Suspension bracket and steering Body Onboard electric equipment |
System of start of the engine - the general information and safety measures The general information Elements of starter Bosch with a reducer Unique problem of system of start of the engine is maintenance of rotation of the engine with a speed, sufficient for start. The start system consists of a starter, the storage battery, the ignition switch, the relay and conductings. The involving relay is on the starter case. The starter represents the electric motor of a direct current with the mixed excitation with the electromagnetic traction relay. The starter consists of the case or статора with windings of excitation, an anchor with обгонной муфтой, covers with щёткодержателями and the traction relay. At starter inclusion through a winding of the traction relay of a starter the current from the storage battery starts to proceed. The relay anchor is involved also relay contacts become isolated. Simultaneously the relay anchor through the lever moves обгонную муфту with a gear wheel. The nave обгонной муфты turns on screw шлицах a shaft of an anchor of a starter and turns as well a gear wheel that facilitates its input in gearing with a gear wreath of a flywheel. Through the closed contacts of the traction relay there is a current feeding windings статора both anchors and the starter anchor starts to rotate together with a nave and обгонной муфтой. After start of the engine frequency of rotation of a gear wheel exceeds frequency of rotation of an anchor of a starter. In this case обгонная муфта it is freely turned, and the twisting moment is not transferred from an engine flywheel to a shaft of an anchor of a starter. After отпускания the ignition key the feed circuit of windings of the traction relay through the ignition switch is disconnected, the anchor of the traction relay is wrung out by a spring in a starting position, relay contacts are disconnected also a drive gear wheel leaves gearing with a gear wreath of a flywheel. The starter with the involving relay is located to in parallel cranked shaft of the engine and fixed on a transmission. The starter joins, only if selector AT is in position Р or N. If the car is in a protection mode, the starter will not be turned. Safety measures At carrying out of any works with system of start of the engine observe following requirements.
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