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| Design of a new type of adjustable shock absorber for electric-controlled air suspension
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| 1.School of Traffic and Automobile Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Zhejiang Wenda Shockabsorber Company Limited, Rui′an, Zhejiang 325204, China) |
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Abstract To meet the damping control demand of an electric-controlled air suspension in bus the structure of an adjustable shock absorber with two-levels damp is designed based on the passive hydraulic shock absorber of a bus. The design goal of shock absorber′s damping force under ′hard′ and ′soft′ dam-ping situation is decided. The damping adjusting device makes the shifting of two damping situations possible through solenoid controlling swing cylinder. The structure and working principle of the adjustable shock absorber are introduced. The mathematical model of adjustable shock absorber′s damping characteristics is established by fluid mechanic theory. Structural parameters of shock absorber are decided by simulation. Adjustable shock absorber specimen is developed, and its damping performance is tested. It shows that test data agree well with the simulation results, the validities of structure design and simulation model of adjustable shock absorber are verified. The shifting control of two damping situations is accurate and stable in the process of bench test. Thus it provides new technology for development of electric-controlled semi-active air suspension.
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2011, Vol. 32 
