This paper focuses on the influence of temperature on performance degradation of a gear pump running in low-temperature environment(below 5 ℃).A flow calculation model for the gear pump is established by taking the gear pump of the hump car retarder as the research object and the flow as the performance degradation index.Using the Wiener process model with linear function or exponential function drift term,a multi-parameter performance degradation model of gear pump is established including running pressure,temperature,and equivalent wear gap.Compared the analysis results of the gear pump of the flow calculation model with the field experiment data,the impact of environmental temperature and running pressure on the performance degradation of the gear pump in low-temperature environments is analyzed.The results indicate that there is a strong correlation between the performance degradation of gear pump and the environment temperature in low-temperature environment.The linear drift model is better than the exponential drift model in statistical fitting performance.The Wiener process model with multi-parameter drift term can effectively characterize the performance degradation process of gear pumps.
关键词
齿轮泵/驼峰车辆减速器/维纳过程模型/性能退化模型/环境温度
Key words
Hump car retarder/Gear pump/Wiener process model/Performance degradation model/Environment temperature
维普
万方数据