What are the symptoms of a broken engine flywheel?
1 Answers
Engine flywheel failure symptoms include: crankshaft fatigue, longitudinal cracks in the flywheel housing, etc. The flywheel is a disc-shaped component with significant rotational inertia, functioning as an energy storage device. For four-stroke engines, only one power stroke occurs every four piston strokes—meaning only the power stroke generates work, while the exhaust, intake, and compression strokes consume energy. This results in periodic torque fluctuations from the crankshaft and unstable crankshaft speed. To mitigate this, a flywheel is installed at the rear end of the crankshaft. Positioned at the crankshaft's power output end (connected to the transmission and working equipment), the flywheel primarily stores energy and inertia outside the engine's power stroke. In four-stroke engines, the energy for intake, compression, and exhaust strokes is supplied by the flywheel's stored energy.