四角互联空气悬架系统平顺性与消扭特性  

Characteristics of Ride Comfort and Torsion Elimination of Four-Corner Interconnected Air Suspension System

作　　者：江洪[1] 钱宽 朱超[1] 孙禹州 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《西南交通大学学报》2015年第6期1106-1113,共8页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(51575241);江苏省六大人才高峰资助项目(2012-ZBZZ-030)

摘　　要：为提高车辆在不平路面上的行驶平顺性,减小车身所受扭转载荷,提出了一种四角互联空气悬架系统.基于工程热力学和车辆动力学理论,构建了带四角互联空气悬架的整车动力学模型.通过搭建试验台架,验证了所建模型的准确性,并在Matlab/Simulink中进行了仿真分析.研究结果表明：当车辆以20 km/h的速度行驶在对扭路面时,与传统空气悬架相比,四角互联空气悬架可使车身加速度、侧倾角和车轮动载荷分别改善22.5%,24.2%和16.3%,并消除27.8%的车身扭转载荷,但悬架动行程增大20.6%;连接管路内径在0～10 mm范围增大,互联效果越显著,当车速在10～60 km/h范围时,四角互联空气悬架能有效提升车辆隔振性能,且车速在40 km/h以下消扭效果更加明显。In order to improve the ride comfort and decrease the vehicle body torsion load on uneven roads,a four-corner interconnected air suspension system was proposed. Based on the engineering thermodynamics and the vehicle dynamics theory,a vehicle dynamic model equipped with the fourcorner interconnected air suspension was established. Then,the model accuracy was validated by a bench test,and the full vehicle model was simulated under the Matlab / Simulink environment. The results show that when a vehicle equipped with the four interconnected air suspension runs at a low speed on a twisting road,compared to that equipped with the traditional air suspension,the vehicle body acceleration,roll angle and wheel load reduce 22. 5%,24. 2% and 16. 3%,respectively; the vehicle body torsion load decreases 27. 8%; but the suspension dynamic stroke increases 20. 6%.Moreover,the interconnection brings about more benefits as the pipe diameter increases from 0 to10 mm. The four-corner interconnected air suspension can effectively improve the ride comfort when the vehicle speed is in the range of 10-60 km / h,and the torsion elimination characteristics will be more obvious when the speed is less than 40 km / h.

关 键 词：空气悬架 四角互联 平顺性 消扭特性 

分 类 号：U463.33[机械工程—车辆工程]