Learn how starter motors work, where they are used and why they are essential for a car to start. We look at the main parts as well as how starter motors work how it turns the flywheel which starts the combustion process to start the car engine.
This video explains the working of a starter motor with relevant animations. The starter motor model shown here is a pre-engaged type starter motor. In this type, the pinion engages with the flywheel before the motor starts to spin and hence the name.
The car starter provides rotational motivation to turn the engine over to begin the combustion process. It is an electric motor that sits between the engine and transmission, and connects to the flywheel (manual) or flex plate (automatic).
When the starter solenoid is activated, a plunger moves the pinion gear to engage the flywheel/flex plate. Current is sent through the solenoid to the starter motor, which is a 12V DC electric motor. The motor's output is connected to a small transmission that reduces the gear ratio and multiplies torque before turning the pinion. When combustion takes over and the crankshaft is spun by the engine, the solenoid disengages, retracting the pinion and shutting off the electric motor.
Typical causes of wear include the contacts in the solenoid, which degrade overtime from friction, abrasion, contamination and corrosion. Furthermore, the brushes inside the DC electric motor may also fail due to abrasion and corrosion. This can cause a no-start condition. The starter must then be re-manufactured by replacing the affected components.
Learn how starter motors work, where they are used and why they are essential for a car to start. We look at the main parts as well as how starter motors work how it turns the flywheel which starts the combustion process to start the car engine.
This video explains the working of a starter motor with relevant animations. The starter motor model shown here is a pre-engaged type starter motor. In this type, the pinion engages with the flywheel before the motor starts to spin and hence the name.
The car starter provides rotational motivation to turn the engine over to begin the combustion process. It is an electric motor that sits between the engine and transmission, and connects to the flywheel (manual) or flex plate (automatic).
When the starter solenoid is activated, a plunger moves the pinion gear to engage the flywheel/flex plate. Current is sent through the solenoid to the starter motor, which is a 12V DC electric motor. The motor's output is connected to a small transmission that reduces the gear ratio and multiplies torque before turning the pinion. When combustion takes over and the crankshaft is spun by the engine, the solenoid disengages, retracting the pinion and shutting off the electric motor.
Typical causes of wear include the contacts in the solenoid, which degrade overtime from friction, abrasion, contamination and corrosion. Furthermore, the brushes inside the DC electric motor may also fail due to abrasion and corrosion. This can cause a no-start condition. The starter must then be re-manufactured by replacing the affected components.
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