Hydraulic torque converter device with multi-stage damping function

Abstract

The invention discloses a hydraulic torque converter device with a multi-stage damping function. The hydraulic torque converter device comprises a pump wheel cover. The device can give full play to the distance increasing effect of a hydraulic torque converter at a low gear, and achieves smooth starting, acceleration, climbing and the like of an automobile, and meanwhile, the torsional vibration of a transmission system is effectively reduced by utilizing first damping springs and the damping characteristic of hydrodynamic transmission; in a transition state of switching from the low gear to a high gear, vibration caused by impact is rapidly attenuated by utilizing the plurality of sets of multi-stage damping springs, and the smoothness of the locking process is ensured, so that extra vibration of the transmission system caused by impact is avoided; and under the high gear, a torsion damper completes locking, the transmission efficiency of the transmission system is improved, and irregular torsional vibration of the system caused by pulse excitation of an engine is greatly reduced through the arranged multi-stage damping springs, so that stable transmission is guaranteed, and the service life of parts of the transmission system is prolonged.

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.

Images