Nowadays,
Used Car are very common. Because many elderly people may find it inconvenient to drive, the application of Used Car is constantly increasing. Among them, Used Car are more common, but we also encounter some common faults during use, such as Loud noise, what causes it? Let`s give a brief introduction by the
Used Electric Car manufacturer.
When the noise is loud during driving, you must distinguish where the noise is coming from. If the noise is coming from the motor, it is usually caused by the gap between the shaft and the bearing being large or the Hall element in the motor being displaced and falling off. If it is caused by four The shell of an Used
Electric Car vibrates, usually because some places are not fastened, causing resonance.
Used Car require a large current to start. If an Used Electric Car uses a square wave controller, its specific working method is destined to make a lot of noise. The noise will be more obvious when starting and driving. This is a normal phenomenon. However, if a sine wave controller is used, the starting noise will not be noticeable. big. For this situation, Used Electric Car manufacturers recommend replacing the square wave controller with a sine wave controller.
However, if there is water failure in the motor, it will also cause the Used Electric Car to start with a loud noise. Because water enters the motor, it will cause internal rust and cause demagnetization. This will also directly cause the stator and rotor to run poorly, increase resistance, and cause the Used Electric Car to make noise when starting. In this case, the Used Electric Car manufacturer can open the motor and remove the rust. If the rust is serious, replace the motor with a new one.
