考虑气体溶解和温度的油气悬架输出特性研究

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中图分类号：TH137 DOI：10.3969/j.issn.1004-132X.2025.11.003

Abstract： Considering the influences of gas dissolution and temperature variation in the suspensions during the vehicle working，a specific type of hydro-pneumatic suspension was taken as the research object.By incorporating Henryp's law，a revised mathematical model of the suspension's output characteristics was proposed，and the performances was analyzed under different excitation signals.A testing platform Was constructed for evaluating the output characteristics of the hydro-pneumatic suspensions.The output characteristics were tested under diferent steps and sinusoidal signal excitations，in order to investigate the dynamic and static dissolution characteristics of the gas，as well as the output force characteristics variation curves with temperature and gas dissolution. The results indicate that gas dissolution is solely related to gas pressure，with a positive correlation between the them，which is independent with the excitation frequency and amplitude.A higher gas Working pressure may result in bigger solubility and faster dissolution rate. Furthermore，higher gas dissolution causes a reduction in the gas pressure of the hydro-pneumatic suspensions，thereby decreasing the output force. Conversely，an increase in oil temperature willresult in an increasing of the gas pressure，leading to an increase in output force，accompanied by minor gas precipitation phenomena. Considering factors such as temperature and gas solubility，the normalized root mean square error between the theoretical and testing results of the output force characteristics of the hydro-pneumatic suspensions is as 0.76% ：

Key words： dissolution; temperature variation; hydro-pneumatic suspension; gas pressure

0 引言

近年来，随着矿用自卸车的迅速发展和大规模使用，并基于其恶劣、路面复杂多变的运行环境，人们对矿用自卸车驾驶的舒适性和稳定性提出了更高的要求[1]。（剩余13198字）