Automobile starter common failure and maintenance suggestions

      As we all know, the starting of the engine needs external support, and the car starter is playing this role。The starter can convert the electric energy of the battery into mechanical energy and drive the flywheel rotation of the engine to start the engine。Basically, the starter uses three parts to implement the entire starting process。The DC motor introduces the current from the battery and causes the driving gear of the starter to produce mechanical motion;The driving mechanism meshes the driving gear into the flywheel tooth ring, and can be automatically disengaged after the engine starts.The on-off of the starter circuit is controlled by an electromagnetic switch。Among them, the motor is the main component inside the starter, and its working principle is the transformation process of energy based on the ampere law that we are exposed to in junior high school physics, that is, the role of the energized conductor in the magnetic field。The motor includes the necessary components such as armature, commutator, magnetic pole, brush, bearing and housing。

　　Common phenomena:

　　1.After the start switch is turned on, the starter rotates at high speed and the engine crankshaft does not respond。This phenomenon indicates that the fault occurs in the transmission mechanism of the starter, which may be caused by the wear of the transmission gear or one-way clutch。

　　2.The starter does not work properly, the drive gear does not turn。There are many reasons for this phenomenon, such as power cord problems, starting switch contact plate ablation, and excessive engine resistance。

　　3.The starter has insufficient power output to drive the crankshaft。Excitation coil short circuit and battery power loss can cause the starter power shortage。

　　4.The running sound of the starter is jarring。This may be caused by the one-way clutch stuck or improper installation of the starter。

　　5.The starter switch has a "click" sound, but it does not work。A broken holding coil or a serious loss of battery power can cause this phenomenon。

　　Maintenance suggestions:

　　The starter is a valuable part of the car and will not be damaged easily, but in order to extend the service life of the starter, proper use is also necessary。Starter in the process of starting an engine，To introduce 300~400 Ah of electricity from the battery，Therefore, in order to prevent the battery from overcurrent or damage，The starting time should not exceed 5 s;Starting difficulties tend to occur in winter，When starting multiple times, each starting time should not be too long，There should also be appropriate intervals in each start。

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