Influence of interconnected air suspension on vehicle vibration performance
1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Abstract：Taking the interconnected air suspension as research object, the acceleration frequency responses under different interconnected modes were investigated by building a vehicle test bench. Based on vehicle dynamics, thermodynamics and fluid mechanics, the full vehicle model with interconnected air suspension was established and simulated with integrating non-interconnection, lateral interconnection, longitudinal interconnection and four-corner interconnection. The effects of four interconnected modes on bounce, pitch and roll frequency were analyzed. The acceleration responses of vehicle at 60 km?h-1 on level C pavement were investigated in both frequency and time domain. The results show that compared with non-interconnection, the RMS of spring mass acceleration of interconnected air suspension in 0.5～7.0 Hz is improved under twisted sine excitation, and the roll frequency is reduced by lateral and four-corner interconnection. The pitch frequency is reduced by longitudinal and four-corner interconnection, and the ride comfort in three interconnected modes is improved on the random road.
2017, Vol. 38 
