Damping adjustable shock absorber based on on-off solenoid valves and its simulation

TAO Wei1, LIU Zhi-qiang2, GUO Yan2
(1.College of Mechanical and Electrical Engineering, Wuyi University, Nanping 354300, China; 2.School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract: Aiming at that the traditional shock absorbers with adjustable throttle area are always designed based on servo solenoid valve, which shows many problems, such as complex structure, high design precision requirement and difficult to be controlled, a new type of damping adjustable shock absorber based on onoff solenoid valves was proposed. In the first, the structural design of the target shock absorber was conducted, and its working principle for achieving different damping states was analyzed. On this basis, the establishment process of the damping characteristics model of the target shock absorber was given, and the influence of main structural parameters on damping characteristics of the shock absorber was analyzed by simulations. The results indicate that the designed shock absorber can achieve four damping modes and eight damping states by just changing the onoff statuses of two solenoid valves, which makes it have simple structure and high reliability. Meanwhile, the simulation results shown that the parameters of the four check valves and two onoff solenoid valves have significant influences on the damping characteristics of the shock absorber. The research results will lay an important theoretical foundation for the characteristics analysis and the determination of the main structural parameters of the target shock absorber.

Key words: damping adjustable shock absorber; on-off solenoid valves; model building; damping characteristics analysis