What Causes the Loud Noise in New Energy Vehicles?

[DeNathan]

Here are the reasons for the loud noise in new energy vehicles: Large bearing clearance in the motor: Motor bearings are specialized bearings used in electric motors. They not only support the shaft but also guide its rotation and bear the idling components on the shaft. If the bearing clearance is too large, it will generate noise, and replacing the bearings can resolve the issue. Motor rotor rubbing: The motor rotor is divided into generator rotors and motor rotors. The rotor is the rotating part of the motor. When the rotor rubs against the stator, the motor will produce abnormal noise, and repairing the stator and rotor can fix the problem. Brushed motor failure: Abnormal noise can be caused by oxidation, burning, oil contamination, unevenness on the commutator surface, or loose commutator segments. Cleaning the commutator surface or soldering the commutator segments firmly is required.