Flywheel Assembly

The main function of the flywheel assembly in an excavator is to store energy and inertia, balance the torque and speed output of the crankshaft, and maintain the stability of the engine.

The flywheel is a disc-shaped component with a large rotational inertia, acting as an energy storage device. In a four-stroke engine, the flywheel assembly balances the torque and speed output of the crankshaft by storing energy and inertia, thereby maintaining the stability of the engine. Specifically, the flywheel is installed at the rear end of the crankshaft, primarily storing energy and inertia outside of the power stroke of the engine. Additionally, the flywheel calibrates ignition timing and fuel injection timing, as well as adjusts valve clearances to ensure the normal operation of the engine. Therefore, the flywheel plays an important role in automotive engines by storing energy and inertia, balancing the torque and speed output of the crankshaft, and maintaining the stability and normal operation of the engine.

It is important to note that the flywheel is a disc-shaped component with a large rotational inertia, so its size and weight need to be considered during installation. The use of a flywheel can effectively address the periodic variations and instability of the crankshaft output, while also extending the engine’s lifespan. This is because the flywheel can absorb some of the engine’s energy, reducing crankshaft vibration and wear, thereby protecting the engine components.