What are the symptoms of a flywheel failure?

1 Answers
RichardAnn
07/30/25 12:09am
Flywheel failure manifests as: engine vibration, transmission imbalance, and abnormal noise from the engine flywheel. The flywheel is a disc-shaped component with significant rotational inertia, functioning similarly to an energy storage device. Both the flywheel and pressure plate have dynamic balance requirements. Imbalances caused by assembly issues or component quality can lead to crankshaft fatigue and longitudinal cracks in the flywheel housing. For four-stroke engines, power is generated once every four piston strokes, resulting in periodic fluctuations in the crankshaft's torque output and unstable crankshaft speed. To mitigate this, a flywheel is installed at the rear of the crankshaft, primarily serving to store energy and inertia outside the engine's power stroke.
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