车辆油气悬挂的阻尼阀设计

根据油气弹簧的结构特点,基于1/4车辆悬挂线性模型,给出了求取悬挂最优线性阻尼的方法,并应用等效线性化方法,确定阻尼阀的结构参数.给出了一种带安全阀的阻尼阀结构方案,利用该方案设计出的阻尼阀体积小、开阀流量大并能承受较大的背压.设计的减振阀已完成台架试验,试验报告通过定型评审.提供的设计方法和结构方案可以作为油气悬挂,特别是重型车辆油气悬挂阻尼阀设计的参考.

Design of a Damping Valve for Vehicle Hydro Pneumatic Suspension

In order to adapt to the constructional features of the hydro pneumatic spring,the necessity of separate damping valve is proposed.Based on the 1/4 vehicle linear suspension model,the optimum damping coefficient is worked out and the parameters of the damping valve are determined with the(equivalent) linearization method.A structure of the damping valve is proposed so that it can fulfill the requirements of small size,high flowrate when the valve opens and the ability of enduring high back pressure.The damping valve had passed the bench test and worked properly.The method of design and the damping valve structure can be a useful guide in the design of hydro pneumatic suspension,especially in heavy duty vehicle design.