The car starter can convert the battery power into mechanical energy, driving the engine flywheel rotation to achieve the engine starting. The motor is the main part of the starter internal machine, and its working principle is the transformation process of energy based on Ampere's law which we have come into being in junior middle school physics, that is, the role of the conduction conductor in the magnetic field. Today Xiaobian for everyone to collect the car starter circuit common faults and repair methods:

(1) press the start button, the starter has sound, the engine does not catch fire. Here are several cases to judge:

① starter sound is not issued, the circuit connected to the moment, the brightness of the alarm light dimmed, reflecting the circuit voltage has a greater fluctuation, should check whether the battery loss of power, the pole pile is connected intact.

② the sound of the shell sound is very loud, the brightness of the alarm light does not change, this phenomenon should be demolition of the starter. The key position in the auxiliary excitation of the contact point of the connection. Here contact is not good. Will cause the starter gear and gear Hard collision.

③ the engine has a tendency to turn the battery acid acid generated too much air bubbles, which is the engine overload signs, the engine after overhaul, you must first hand car test, the feeling is not very heavy, to use the starter. The engine burns on the shaft failure, the operator forced start, it is necessary to cause the starter scrapped, the battery burst accident.

(2) Press the start button, the starter does not work. First check the gearbox is in a neutral position, if the gear must be placed on the neutral, if the neutral state of the starter still does not work, it should check the neutral switch, it is installed in the gearbox shift leading shaft , You can use the detection of resistance method to check the quality of the situation, the gap when the two pins connected in the gear on the two pins nowhere, indicating that the switch is good, and need to adjust the correct. But also the two pins short circuit, the circuit is normal or bad switch is not correct, if not, then continue to check the other aspects of the circuit, ignition switch, starting button can also be used short-circuit test, but to control the contact time to prevent the cause of the starter damage.

Finally, to remind everyone that the car starter is designed for short-term work, the work through the starter winding current is very large (usually a few hundred amps). If you continue to start again, should stop 10--15s, more than three consecutive times should check the starter circuit without failure, stop more than 5min. Otherwise not only harmful to the battery, but also because of large current for a long time through the magnetic field coil and armature coil caused by the temperature is too high, damage the coil insulation, resulting in easy to burn the starter.