6.2.8. A starter - general information
Starter
| 1 - forward cover 2 - traction relay 3 - casing 4 - brush holder |
5 - stator 6 - rotor 7 - a driving gear wheel with the obgonny coupling |
The starter represents the electric motor of a direct current with the mixed excitement with the electromagnetic traction relay.
The starter consists of the case or the stator with windings of excitement, an anchor with the obgonny coupling, covers with brush holders and the traction relay.
At inclusion of a starter through a winding of the traction relay of a starter current from the accumulator begins to proceed. The anchor of the relay is involved and contacts of the relay become isolated. At the same time the relay anchor via the lever moves the obgonny coupling with a gear wheel. The nave the obgonny coupling turns on screw vents of a shaft of an anchor of a starter turns as well a gear wheel that facilitates input it in gearing with a gear wreath of a flywheel. Through the closed contacts of the traction relay there is a current feeding windings of the stator and anchors and the anchor of a starter begins to rotate together with a nave and the obgonny coupling.
After start of the engine the frequency of rotation of a gear wheel exceeds the frequency of rotation of an anchor of a starter. In this case the obgonny coupling is freely turned, and the torque is not transferred from an engine flywheel to a starter anchor shaft. After an ignition key otpuskaniye the power-supply circuit of windings of the traction relay via the switch of ignition is disconnected, the anchor of the traction relay is wrung out by a spring in a starting position, contacts of the relay are disconnected and the gear wheel of the drive leaves gearing with a gear wreath of a flywheel.
ATTENTION