The function and working conditions of the crankshaft

Aug 29,2023

The crankshaft is one of the most important components in the engine. Its function is to convert the gas force from the piston connecting rod group into torque and output it to the outside. In addition, it is also used to drive the valve train and various other auxiliary devices.

1. Function of the crankshaft: The crankshaft is one of the most important parts in the engine, and its function is to convert the gas force transmitted from the piston connecting rod group into torque and output it to the outside. In addition, it is also used to drive the valve train and various other auxiliary devices.

2. Working conditions: To withstand periodic changes in gas pressure, inertial force, moment of inertia, centrifugal force, lack of oil, high speed, and axial movement.

3. Material: It is made of high-strength, high-impact toughness, and wear-resistant materials, mainly medium-carbon steel, medium-carbon alloy steel, and rare earth ductile iron. In order to improve the wear resistance and fatigue resistance, the surface of the journal is subjected to high-frequency quenching or nitriding treatment, and is finely ground to meet the requirements of higher surface hardness and surface roughness.

crankshaft

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Working of a Crankshaft