The Working Principle and Characteristics of the Starter


Starters are divided into DC starters, gasoline starter […]

Starters are divided into DC starters, gasoline starters, compressed air starters, etc. according to their working principles. At present, most internal combustion engines use DC starters, which are characterized by compact structure, simple operation and easy maintenance. Gasoline starter is a small gasoline engine with a clutch and transmission mechanism. It has high power and is less affected by temperature. It can start large internal combustion engines and is suitable for alpine regions. Compressed air starters are currently divided into two categories, one is to inject compressed air into the cylinder according to the working sequence, and the other is to use an air motor to drive the flywheel. The use of compressed air starters is close to gasoline starters and is usually used to start large internal combustion engines.

The DC motor is composed of a DC series motor, an operating mechanism and a clutch mechanism. It is dedicated to starting the engine and requires a strong torque, so the amount of current to pass through it is large, reaching hundreds of amperes.

The torque of the DC motor is large at low speeds, and the torque gradually decreases when the speed is high, so it is very suitable for use as a starter.

The starter adopts a DC series-excited motor, and the rotor and stator parts are wound with relatively thick rectangular cross-section copper wires; the driving mechanism adopts a reduction gear structure; the operating mechanism adopts an electromagnetic magnetic attraction method.

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