Influence of damper indicator diagram area on vehicle ride comfort
1. School of Electrical ＆ Information Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. Bosch Automotive Products Company, Suzhou, Jiangsu 215024, China; 3. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Abstract：To investigate the effects of damper indicator characteristics on vehicle ride comfort, the mathematical model of hydraulic doubletube damper was established based on the fluid mechanics theory, and the accuracy was verified by bench tests. According to the damper external characteristics simulation curve, a quantitative indicator of damper indicator diagram total area was proposed. Combining the vibration principles of vehicle system, the mathematical relationships among indicator diagram total area and suspension performance indices of sprung mass vertical vibration acceleration, suspension dynamic travel and tire dynamic load were established, and the effect law was analyzed quantitatively based on the fullcar vibration model. The results show that there is apparent deterioration phenomenon of vehicle ride comfort and safety when the indicator diagram total area is small. When the total area is too large, the sprung mass vibration acceleration and the tire dynamic load are increased, and the vibration energy distribution in frequency domain is influenced at the same time.
2017, Vol. 38 
