If it is a car with a large pump, the key position, the circuit breaker or its fuse relay is broken. If it is a car with a high voltage common rail and a single pump, the key is located and the fuse or kill relay is broken.
Responses from Truck Home users
The inlet air temperature is too high or the inlet temperature the inlet water is too high, the cooler has a clogging phenomenon. The inlet air or water temperature must be lowered to eliminate blockage in the cooler. Before the fault is cleared, the generator load must be limited to reduce the generator temperature.
If the bearing is filled with too much or too little grease, grease should be added according to regulations, generally 1/2 ~ 1/3 of the bearing chamber (the upper limit is used to low speeds, and the lower limit(lower is used for high speeds). And it is recommended not to exceed 70% of the bearing chamber.
Bearing wear. If the wear is not significant, the bearing will overheat locally; if wear is severe, the stator and rotor may rub against each other, causing the stator and rotor to overheat. Bearings should be checked for noise. If friction between the stator and rotor is detected, the machine should be stopped immediately for maintenance or replacement of the bearings.
Extended information:
When the external circuit feeds the excitation winding to Through the brush, a magnetic field is generated, causing the claw poles to be magnetized into N poles and S poles. As the rotor rotates, the magnetic flux changes alternately in the stator winding. According to the principle of electromagnetic induction, it can be seen that a forceThe alternating induced electromotive is generated in the three-phase winding of the stator. This is how an alternator produces electricity.
The main motor (i.e. motor) drives the rotor of the synchronous generator excited by direct current to rotate at a speed n (rpm), and the stator winding three-phase induces an alternating potential. If the stator winding is connected to an electrical load, the motor will produce alternating current. The alternating current will be converted to direct current through the bridge rectifier inside the generator and output from the output terminal.
The alternator is divided into two parts: the stator winding and the rotor winding. The three-phase stator winding is distributed across the housing at an electrical angle difference of 120 degrees to each other. is composed of two polar claws. When the rotor winding is connected to direct current, it is energized and the two claws are polaires form the N pole and the S pole.
The magnetic field lines start from the N pole, enter the stator core through the air gap and then return to the adjacent S pole. Once the rotor turns, the rotor windings cut the magnetic lines of force, generating a sinusoidal electromotive force with a mutual difference of 120 electrical degrees in the stator windings, i.e. three-phase alternating current, then converted into direct current output via the rectifier element composed of diodes.
Baidu Encyclopedia - Car Generator