What Is A Starter Motor?

What is a starter motor?

A starter motor refers to a motor that is installed on an engine and is used to start an engine through an electric drive. Gasoline engine starter motors, and diesel engine starter motors, are common in construction machinery. A starter motor helps to reduce starting the engine by manpower. It can be used repeatedly and is widely used.

How does a starter motor work?

The starter motor is responsible for turning the engine when the ignition is fired. When you turn the ignition on, the starter motor kicks in and turns the engine, allowing it to suck in air. On the engine, a flywheel with a ring gear is mounted on the end of the crankshaft. On the starter, the pinion is designed to fit into a groove in the ring gear. When you turn the ignition, an electromagnet inside the body engages and pushes out the pinion-connected rod. The pinion meets the flywheel and the starter motor turns. This spins the engine, sucking in air (and thus fuel). When the engine turns, the starter motor disengages and the electromagnet stops. The connecting rod retracts again into the starter motor, taking the pinion out of contact with the flywheel and preventing potential damage.

Symptoms of a faulty starter motor

The starting of the engine is inseparable from the starter motor. The starter motor is composed of three parts: a DC motor, a transmission mechanism, and an electromagnetic switch. It can convert the electrical energy of the battery into mechanical energy, and drive the engine flywheel on the engine to rotate to start the engine. Here are some symptoms of a faulty starter motor.

1. When there is a problem with the power supply of the starter, such as an open circuit or short circuit inside the starter, the starter will not work, and the vehicle will not respond at this time.

2. There are coils inside the starter. When some coils are short-circuited, the transmission mechanism cannot generate enough rotating magnetic force, and cannot provide the torque required for starting. At this time, when the vehicle is started, the engine will make a dull sound and the speed will increase. lower.

3. When the magnetic package of the starter fails, although the starter can rotate all the time, the flywheel cannot be driven. At this time, when the vehicle is started, the sound of the motor working can be heard, but the engine has no speed, so the vehicle cannot be started.

4. When the surface of the starter's bearing, carbon brush, or starting gear is damaged, the starter will not be able to run. At this time, when starting the vehicle, a relatively loud noise will be heard.

5. When there is a short circuit inside the starter, the starting line or coil will overheat. When starting the vehicle at this time, it may smell burnt.

In conclusion, the starter motor is an important part of heavy equipment. It plays a key role in starting the engine operation. Understanding how starter motors work and recognizing the symptoms of starter motor failure is important to maintaining the reliability of heavy equipment. Whether it's the power supply, coil, magnetic enclosure, or other component, keeping your starter motor in top condition ensures your heavy equipment starts efficiently every time you turn the ignition key.