What are the three functions of a flywheel?
1 Answers
1. Functions of a flywheel: (1) Stores the kinetic energy during the power stroke to overcome resistance during auxiliary strokes, ensuring uniform rotation of the crankshaft; (2) The outer ring of the flywheel is equipped with a ring gear. When starting the engine with the starter, the drive gear meshes with the ring gear to rotate the crankshaft for starting; (3) The flywheel is the driving part of the clutch. The edge of the flywheel is marked with an indicator (engraved line or steel ball) showing when the first cylinder piston is at top dead center. In gasoline engines, this serves as the basis for adjusting and checking ignition timing. 2. Functions of a crankshaft: (1) During the power stroke, converts the thrust transmitted by the connecting rod into rotational torque, which drives the vehicle through the automotive transmission system; (2) Utilizes the rotational inertia of the crankshaft and flywheel to move the piston up and down via the connecting rod, completing auxiliary strokes such as exhaust, intake, and compression, preparing for the next power stroke; (3) Drives auxiliary devices such as the valve train, oil pump, fan, water pump, generator, and air compressor.