Damping-variable automotive suspension shock absorber and control method thereof

Abstract

The invention discloses a damping-variable automotive suspension shock absorber which comprises a working cylinder, a piston rod, a piston, a groove and a spring, wherein the working cylinder is filled with flowable damping liquid; the piston rod is arranged in the working cylinder and can move in the axial direction of the working cylinder; the piston is arranged on the piston rod; a damping passage for circulation of the damping liquid is arranged between the peripheral surface of the piston and the internal wall surface of the working cylinder; the groove is formed in the peripheral direction of the middle of the piston; a magnetizing coil is wound at the bottom of the groove in the circumferential direction; and the spring is arranged at the external part of the working cylinder in a sleeving manner. According to the damping-variable automotive suspension shock absorber, during the driving process of an automobile, the damping of the shock absorber is variable, so that the drivingcomfort and stability are improved. The invention further provides a control method of the damping-variable automotive suspension shock absorber. During the driving process of the automobile, dampingof a damper is controlled according to the weight of the automobile and the compression amount of the spring, so that the driving comfort and stability are improved.

Description

technical field [0001] The invention relates to the technical field of automobile shock absorption, and more specifically, the invention relates to a damping variable automobile suspension shock absorber and a control method thereof. Background technique [0002] The shock absorber is the main component that generates damping force, and its function is to quickly attenuate the vibration of the car, improve the ride comfort of the car, and enhance the adhesion between the wheel and the ground. In addition, shock absorbers can reduce the dynamic load of the body part and prolong the service life of the car. [0003] The function of the elastic element in the automobile suspension system is to buffer the vibration caused by the uneven road surface when the vehicle is running, reduce the acceleration of the vehicle body and reduce the dynamic load and dynamic stress of the relevant parts. If there were only elastic elements, the car would continue to vibrate after one impact. ...

AI Technical Summary

Problems solved by technology

[0004] Due to the constant damping coefficient of the ordinary damper used in traditional cars, it cannot be changed with the quality of the road on which the car is driving and the load of the car, making the car appear "softer" when the load is too heavy, and "harder" when the load is too small; Or the vehicle appears "softer" when the vibration is large, and "harder" when the vibration is small, which reduces the service life of the parts and reduces the driving comfort and stability.

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