A hydraulic torque converter device with multi-stage damping function

Abstract

A hydraulic torque converter device with a multi-stage vibration reduction function, including a pump wheel cover. This device can fully exert the distance-increasing effect of the hydraulic torque converter itself in low gears, and realize smooth starting, acceleration, and climbing of the car. At the same time, the torsional vibration of the transmission system can be effectively reduced by using the first damping spring and the damping characteristics of the hydraulic transmission itself; in the transition state from low gear to high gear, using multiple sets of multi-stage damping springs Quickly attenuate the vibration caused by the impact, ensure the smooth locking process, and avoid the extra vibration of the transmission system caused by the impact; in the high-grade position, the torsional shock absorber completes the locking, the transmission efficiency of the transmission system is improved and the multi-stage damper is used. The vibrating spring greatly reduces the irregular torsional vibration of the system caused by the engine pulse excitation, ensures stable transmission and improves the service life of the transmission system components.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission, in particular to a hydraulic torque converter device with multi-stage damping function. Background technique [0002] During the driving process of the car, due to the unbalanced operation of the internal combustion engine, the periodic change of the torque will cause the vibration of the transmission system, and in severe cases, it will cause the fracture of the transmission shaft. [0003] The torsional damper is an important component in the engine power transmission mechanism. It mainly realizes vibration reduction through the elastic elements contained in it. By reducing a certain order natural frequency of the torsional system of the drive train, the natural vibration shape of the system can be changed to avoid or reduce "resonance" Possibilities generated to achieve the purpose of vibration reduction. [0004] The elastic element in the torsional shock absorber will be comp...

AI Technical Summary

Problems solved by technology

[0004] The elastic element in the torsional shock absorber will be compressed under the action of torque during use. Under the action of instantaneous large torque, the elastic element will be forcibly compressed to the limit, and its elasticity will be weakened when the torsional limit angle is exceeded. Repeatedly, the The life of the elastic element is shortened or even broken. When the torsional shock absorber is in a high-speed rotation state, the failure of the elastic element will inevitably cause noise and vibration, which will cause abnormal noise in the entire transmission system

The existing torsional vibration damper has a relatively simple structure, limited vibration damping effect, and is prone to abnormal noise. Therefore, how to better improve the vibration damping performance of the torsional vibration damper has become an urgent problem to be solved.

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