Abstract:Based on AMESim software, a traditional suspension and a hydro-pneumatic suspension of 1/4 vehicle model were modeled. C-class road roughness model was modeled based on the method of integral white noise. By simulation experiments, the sprung mass and unsprung mass vertical vibration displacement, velocity, acceleration and acceleration rMS value and other properties of the traditional spring suspension and hydropneumatic suspension were compared. The results show that: compared with traditional suspension with “spring+shock absorber of damping” structure, hydrosuspension suspension can be further improved vehicle ride comfort for it has a better damping effect. The analytical conclusion can offer theory guide to improve and design performance of vehicle ride comfort.