Starter Motor

5 week ago

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5 month

Product details

The starter motor is a key component used to start the engine in automobiles or other internal combustion engine equipment. Its function is to convert electrical energy into mechanical energy, drive the crankshaft of the engine to rotate until the engine completes self-sustaining operation. The following is a detailed introduction about the starter motor:

1. Main structure and composition

DC motor: The core part generates rotational power through battery power supply.

Electromagnetic switch (suction and pull coil): controls the engagement of the starter gear and the on/off of the power supply.

Drive mechanism (one-way clutch): Ensure one-way power transmission (only engage during startup, disengage after startup, prevent reverse drag).

Bendix gear: meshes with the engine flywheel ring gear to transmit rotational force.

Battery: Provides the high current required for starting (usually 200-600 amperes).

2. Working principle

Power on: Turn the ignition switch to the "start" position, and the battery current activates the electromagnetic switch.

Gear meshing: Electromagnetic force pushes the small gear forward to mesh with the flywheel ring gear.

Rotating start: The electric motor rotates at high speed and drives the flywheel through a one-way clutch, causing the engine crankshaft to rotate.

Detachment: After starting the engine, release the ignition switch and reset the gear to avoid damage to the starter due to overspeed.

3. Common faults and causes

Starter not turning: battery depletion, poor circuit contact, electromagnetic switch failure, carbon brush wear.

Idle (gear slip): Failure of one-way clutch, wear of flywheel ring gear.

Abnormal noise: Poor gear meshing and damaged bearings.

Continuous operation: ignition switch return fault, relay adhesion.

4. Maintenance and Precautions

Regular inspection: Check the battery level and cable connections for firmness.

Avoid prolonged startup: Each startup should not exceed 5 seconds, with an interval of more than 10 seconds to prevent overheating.

Timing of replacement: If the starter motor is weak or has frequent abnormal noises, it needs to be repaired or replaced in a timely manner.

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Jienuo Import and Export Trade Co., Ltd

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5 month

Main Product: truck engine part, truck Transmission part, truck electrical part, truck Braking part , truck steering part, truck body part

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