双缸连通式油气悬架阻尼孔压力特性分析

Characteristics Analysis of Damping Hole Pressure of Interconnected Hydro-Pneumatic Suspension

阻尼孔压力分布对连通式油气悬架消除不平路面对车架的过大载荷和实现较好的侧倾特性有重要的意义。根据双缸连通式油气悬架的结构特点和性能特征,搭建其数学模型和物理模型,并基于此双油缸连通式油气悬架的试验平台和AMESim仿真模型。利用仿真模型、建立试验模型,改变其中主要参数如阻尼孔的直径、缸内气体压力、工作频率、相位差、油缸工作受力,会影响阻尼孔油压。结果表明阻尼孔直径和相位差对阻尼孔两端压差具有较大影响,在一定范围内可以增大两端压差;同时通过分析油缸输出力的变化趋势,验证数学模型、物理模型和仿真模型的可靠性,为进一步研究提供参考。

There is very important significance of damping hole pressure distribution of interconnected hydro-pneumatic suspension to eliminate the too large load from the uneven road on frame and achieve better performance of roll. According to the structure characteristics and performance characteristics of interconnected hydro-pneumatic suspension, the mathematical model and physical model were established, which the experimental platform and the AMESim simulation model were established based on. Using the simulation model and the experimental model, the main parameters, such as the diameter of the damping hole, gas pressure, working frequency, phase difference and the working force of the cylinder, will be affected by the damping hole oil pressure.The results show that the damping hole diameter and phase difference have a great effect on the differential pressure of the damping hole. The pressure difference can be increased in a certain range. At the same time, through the analysis of the change of the oil cylinder output force, the reliability of the mathematical model, the physical model and the simulation model are verified, which provides a reference for further research.