What are the main components of the crankshaft flywheel assembly?

2 Answers
DeKennedy
07/24/25 1:49pm
The crankshaft flywheel assembly mainly consists of the crankshaft, flywheel, crankshaft timing gear, pulley, and crankshaft torsional damper. Here is some related information about the crankshaft flywheel: 1. The function of the crankshaft flywheel: The role of the crankshaft flywheel assembly is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, providing torque for the vehicle's movement and other power-demanding mechanisms. It also stores energy to overcome the resistance during non-power strokes, ensuring smooth engine operation. 2. Classification of crankshaft structures: Integral type: The entire crankshaft is forged or cast as a single piece and is widely used in small and medium-sized diesel engines. Split type: Includes semi-split and fully split types, used in large low-speed diesel engines. Combined type: Includes segmented and disc types, used in high-speed engines with rolling bearings.
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Jenna
08/11/25 7:46am
I remember when I was working on engine repairs, I figured out that the crankshaft flywheel assembly is essentially composed of a few key components: first, the crankshaft, which connects all the pistons and converts the up-and-down motion into rotation; second, the flywheel, fixed at the end of the crankshaft, like a large iron wheel, used to store kinetic energy to help start the car and maintain smooth operation; then there are the flywheel bolts, which tightly secure the flywheel to prevent loosening; sometimes there's also a pulley at the front of the crankshaft, driving auxiliary equipment like the fan or generator. These parts work together, and if the crankshaft wears out or the flywheel becomes unbalanced, the engine will shake violently. During maintenance, I always check if the flywheel surface is smooth and listen for unusual noises to detect abnormalities. The flywheel teeth also engage with the starter motor, and if the teeth wear out, the engine won't start. Regularly changing the oil and cleaning the components can extend their lifespan. The entire assembly is mostly made of steel, which must withstand high temperatures and pressures. When doing DIY repairs, never force anything, as it can easily damage the engine's core.
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