System of start of the engine – general information and security measures

General information

Design of the starters established on petrol models

Design of the starters established on diesel models

The unique task of system of start of the engine is ensuring rotation of the engine with a speed, sufficient for its start.

The system of start consists of a starter, the traction relay, the storage battery, the switch of ignition and connecting electroconducting.

At an ignition key povorachivaniye in the situation START through a winding of the traction relay of a starter the current from the storage battery starts to proceed. The anchor of the relay is involved and contacts become isolated. At the same time, anchor movement via the executive lever is transferred to a drive with the obgonny coupling, and the nave of the coupling turns on screw shlitsa of a shaft of an anchor of a starter, turning as well a gear wheel that facilitates input of the last in gearing with a gear wreath of a flywheel. Through the closed contacts of the traction relay passes a current feeding windings of a stator and an anchor therefore the anchor starts to rotate together with a nave and entered into gearing with a flywheel the equipped obgonny coupling a driving gear wheel.

After implementation of start of the engine frequency of rotation of a gear wheel begins exceeds frequency of rotation of an anchor of a starter, thus the obgonny coupling is freely turned, blocking torque transfer from an engine flywheel on a shaft of an anchor of a starter. 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 driving gear wheel leaves gearing with a gear wreath of a flywheel.

The starter with the involving relay is located parallel to a cranked shaft of the engine and fixed on a transmission case.

Activation of a starter occurs only at the squeezed-out pedal of coupling (model to RKPP) / the lever of the AT selector transferred to the position "N" or "R", - that is provided with inclusion in a chain of system of start of the special sensor switch of disconnection of a chain of a starter of RKPP/permission of start (AT).

Security measures

In order to avoid an electromotor exit out of operation as a result of an overheat do not activate a starter continuously for the period of more than 15 seconds, - before repeated inclusion wait for not less than 1 minute. The long ineffectual provorachivaniye of the engine leads to a congestion of not burned down fuel in the catalytic converter that is fraught with an exit of the last out of operation as a result of ignition at start implementation; The starter is connected directly to the storage battery and the negligent treatment of him can be at the bottom of ignition as a result of short circuit, - before the beginning of works on starter service always disconnect from the battery a negative wire.