Abstract: In order to reclaim vibration energy dissipated by damper in automobile suspension, a new reclaiming energy suspension able to reduce vibration and reclaim vibration energy is firstly presented and its working principle is researched. Mechanical behavior of hydraulic reclaiming energy device, the key component of reclaiming energy suspension, is studied according to hydraulic theory and tested, and that mechanical behavior of the device is embodied by a viscidity damping parameter and an analogous Coulomb damping parameter from analyzing the reclaiming energy force the device puts on sprung mass. Reclaiming energy suspension’s dynamics model and simulation under the condition that automobile is running on class C road surface in a 72 km/h velocity are studied. The simulation resluts show that power from engine drawn by reclaiming energy suspension is less than the one by traditional passive suspension slightly, 84% of power from engine is reclaimed by the reclaiming energy device, and automobile riding comfort of reclaiming energy suspension is obviously better than the one of passive suspension. So to use reclaiming energy suspension to improve automobile riding comfort and fuel economic is feasible theoretically.

Key words: Automobile, Mechanical behavior, Numeric simulation, Reclaiming energy suspension, Suspension