关于油气弹簧气体初始压力优化设定的分析

油气弹簧集弹性元件和阻尼元件于一体，以惰性气体为弹性介质，因单位质量储能比大，从而使车辆固有振动频率低，减振和缓冲性能好，并且具有优越的非线性弹性特性，能够满足工程越野车辆的平顺性要求。相比于其他类型的悬架系统，油气弹簧采用的油气悬架系统具有非线性可变刚度、结构紧凑和可调节车姿等显著特点，是一种性能比较理想的悬架系统。本文对某型越野车悬架系统中油气弹簧气体初始压力进行了计算和分析，并将计算结果应用到试验中，然后通过对气体初始压力的调整，使油气弹簧得到较低的固有频率，以易于实现对车身高度的调节，这些优点使其在越野汽车上有较好的应用前景。

Analysis of the Initial Pressure Optimizes Setting for the Oil Gas Spring Gas

Oil gas spring is combined with elastic elements and damping elements, which used inert gas as the elastic medium. As thus, energy storage ratio of unit mass is huge, which reducing the vehicle natural vibration frequency and pre- ferring vibration reduction and buffer performance. It has a superior nonlinear elasticity characteristic and can be able to ful- fill ride comfort of engineering off-road vehicle requirements. Compared with other types of suspension system, the suspen- sion system in oil gas spring has the specialties of nonlinear variable stiffness, eorrlpact structure, adjustability of vehicle pose significant features. It is a kind of ideal performance of suspension system. Calculation and analysis were did for the in- itial gas pressure for a certain type of off road vehicles suspension system in oil and gas spring, and applied the initial gas pressure to cater to the oil gas spring for relatively low natural frequency. It is easy to adjust vehicle body height. This ad vantages make it has good application prospect in the of Proad vehicle.