车辆传动液压系统过滤器动态过滤性能研究

发布时间：2018-07-15 19:14

【摘要】：目前车辆用液压系统过滤器的过滤比通常采用理论过滤比,在实际使用工况下,过滤器的过滤比远低于理论过滤比。针对液压系统过滤器在不同工况下过滤器实际过滤比的确定问题,根据过滤器的工作原理,定义重复过滤率和重复污染率的概念,建立具有动态过滤比的过滤器模型。使用MATLAB/Simulink对动态过滤比模型进行仿真,分析重复过滤率和重复污染率对动态过滤比的影响。结果表明:过滤器的动态过滤比随着系统工况的变化始终处于波动状态;随着重复过滤率和重复污染率的增大动态过滤比迅速减小。搭建过滤器实验台,对不同系统流量、压力和温度下动态过滤比的变化进行试验研究。试验结果表明,动态过滤比模型更符合实际工况,对液压系统的污染控制具有更好的指导作用。
[Abstract]:At present, the filtration ratio of hydraulic system filters for vehicles is usually based on the theoretical filtration ratio. In the actual operating conditions, the filtration ratio of the filters is far lower than the theoretical filtration ratio. Aiming at the problem of determining the actual filtration ratio of hydraulic system filters under different working conditions, according to the working principle of the filter, the concepts of repeated filtration rate and repeated pollution rate are defined, and the filter model with dynamic filter ratio is established. MATLAB / Simulink was used to simulate the dynamic filtration ratio model, and the effects of repeated filtration rate and repeated pollution rate on the dynamic filtration ratio were analyzed. The results show that the dynamic filtration ratio of the filter always fluctuates with the change of the system operating condition, and decreases rapidly with the increase of the repeated filtration rate and the repeated pollution rate. The filter test bench was built to study the dynamic filtration ratio under different system flow, pressure and temperature. The experimental results show that the dynamic filtration is more suitable to the actual working conditions than the model, and has a better guiding effect on the pollution control of hydraulic system.
【作者单位】：北京理工大学机械与车辆学院;北方车辆集团有限公司;
【基金】：科工局十二五传动专项(VTDP-3503)
【分类号】：TH137

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