Engine Starting System

GENERAL INFORMATION.

The engine electrical equipment includes the battery,.

ignition system, starter and generator with corresponding wiring..

The engine starting system includes the battery, starter, ignition switch and related wiring. All components of the starting system are electrically connected to each other..

The starter is a DC electric motor consisting of.

field windings with poles and an armature with a brush-commutator assembly. The drive lever and the pull-in relay are located in the same housing as the electric motor. The housing

protects the starter mechanisms from dirt and water splashes..

When the ignition key is turned to the engine start position, the pull-in relay is energized..

The pull-in relay plunger, being drawn into the solenoid coil, rotates the drive lever, which engages the starter pinion with the flywheel ring gear..

At the same time, the plunger closes the motor switching contacts. The starter cranks the engine crankshaft.

The starter cranks the engine crankshaft. After the engine starts, when the pinion speed

exceeds the starter shaft speed, the overrunning clutch

disconnects the starter from the engine shaft and thus protects

the electric motor from damage..

When the ignition key is released, the pull-in relay is de-energized and

the starter motor. To avoid excessive wear of the overrunning clutch and damage to the electric motor from exceeding the permissible shaft speed, switch off the starter immediately after the engine starts.