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What is the function of the torsional shock absorber of the crankshaft

2021-03-22

The function of crankshaft torsion damper can be summarized as follows:

(1) Reduce the torsional stiffness of the joint between the crankshaft of the engine and the drive train, thereby reducing the natural frequency of torsional vibration of the drive train.

(2) Increase the torsional damping of the drive train, suppress the corresponding amplitude of the torsional resonance, and attenuate the transient torsional vibration caused by the impact.

(3) Control the torsional vibration of the clutch and transmission shaft system when the power transmission assembly is idling, and eliminate the idling noise of the transmission and the torsional vibration and noise of the main reducer and transmission.

(4) Alleviate the torsional impact load of the drive train under unstable conditions and improve the smoothness of the clutch engagement. Torsional shock absorber is an important element in automobile clutch, mainly composed of elastic elements and damping elements. Among them, the spring element is used to reduce the torsional stiffness of the head end of the drive train, thereby reducing the natural frequency of a certain order of the torsion system of the drive train and changing the system The natural vibration mode of the engine can avoid the excitation caused by the main resonance of the engine torque; the damping element is used to effectively dissipate the vibration energy.