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Structural Principle Of Excavator Starter

May 05, 2020

Electromagnetic control device The electromagnetic control mechanism of the starter is mainly composed of a suction coil, a holding coil, a driving lever, and a contact piece of the start switch.


2) The working principle of the starter


The working principle of the starter can be explained by the working principle of its main component DC motor.


DC motor is a device that converts electrical energy into mechanical energy. It is based on the principle that charged conductors are subjected to magnetic forces in a magnetic field. Its working principle is shown in the figure:


Because the torque generated by one coil is too small and the speed is unstable, in fact, there are many coils wound on the armature of the motor, and the number of commutation pieces also increases with the increase of the coil. thereby.


Ensure to produce enough torque and stable speed.


Charge circuit


The charging circuit is mainly used to supply power to all-vehicle electrical equipment and store the excess power in the battery. Mainly include alternator, battery, battery relay, connection harness and so on.