What Causes Oil Leakage in an Automotive Generator?
2 Answers
Generator oil leakage is most likely due to prolonged operation and poor sealing of the oil seal. When a diesel generator set experiences oil leakage, it can lead to increased fuel consumption, accelerated wear of components, reduced power output, and other malfunctions. Therefore, timely repair is essential. Additional information: The functions of an automotive generator are: 1. During normal engine operation, it supplies power to all electrical equipment except the starter motor and simultaneously charges the battery. The generator is the primary power source of the vehicle. 2. An automotive generator consists of a rotor, stator, rectifier, and end cover, and it can be classified into DC generators and AC generators. 3. The working principle of an automotive generator is: When an external circuit energizes the excitation winding through the brushes, a magnetic field is generated, and the claw poles are magnetized into N and S poles.
I've found that oil leakage from a car's alternator is usually caused by aging or damaged internal seals. Prolonged high-temperature operation can make rubber seals brittle and crack, leading to oil seepage. It could also be due to insufficient tightening of screws during installation or worn alternator bearings allowing oil to leak externally. If not addressed promptly, this condition can reduce oil levels, increase engine strain, and potentially cause alternator overheating, short circuits, or even fires, affecting the entire electrical system including functions like headlights and charging. I recommend regularly checking the engine compartment for oil stains. If leakage is detected, promptly visit a professional workshop to replace seals or repair components to prevent minor issues from escalating - safety should always come first.