7.3.6. System of start of the engine - general information and security measures
General information
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The description of the principle of functioning of system of simplification of cold start of the diesel engine is provided in the Part System of simplification of cold start of the diesel engine. |
Design of the starters established on petrol models
Design of the starters established on diesel models
The only problem 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 rechargeable battery, the switch of ignition and a connecting electrical wiring.
When turning the ignition key in situation START through a winding of the traction relay of a starter current from the rechargeable battery begins to proceed. The anchor of the relay is involved and contacts become isolated. At the same time, the movement of an anchor is transmitted to the drive with the obgonny coupling through the executive lever, and the nave of the coupling turns on screw vents 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 there passes the current feeding windings of the stator and an anchor therefore the anchor begins to rotate together with a nave and entered into gearing with a flywheel by the driving gear wheel equipped with the obgonny coupling.
After implementation of start of the engine the frequency of rotation of a gear wheel begins exceeds the frequency of rotation of an anchor of a starter, at the same time the obgonny coupling is freely turned, blocking torque transmission from an engine flywheel on 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 driving gear wheel leaves gearing with a gear wreath of a flywheel.
The starter with the involving relay is located parallel to a bent shaft of the engine and fixed on a transmission case.
Activation of a starter happens only at the squeezed-out coupling pedal (model to RKPP) / the AT selector lever transferred to situation "N" or "P", - 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 electric motor 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 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 rechargeable battery and the negligent treatment of him can be the reason of ignition as a result of short circuit, - before works on service of a starter always disconnect a negative wire from the battery.