中文摘要：

通过对汽车电子稳定程序ESP的液压执行单元内部柱塞泵结构的研究,提出一种在无背压条件下,实现柱塞泵主动增压的设计方法。借助AMESim软件对ESP液压执行单元的柱塞泵结构参数进行仿真,分析了泵流量、电动机转速对增压速度的影响,利于ESP进行硬件匹配时,确定相应的泵流量和电动机选型。台架试验证明,能实现ESP液压执行单元柱塞泵的主动增压功能。

英文摘要：

Through the research of pump in hydraulic control unit（HCU） of electronic stability program（ESP）,a design method that actively build up brake pressure without pre-pressure was established.After that,a simulation model in AMESim to analyze the structure parameters of the HCU of ESP was proposed,especially the influence to increasing pressure rate with different pump flows and motor speed parameters.Based on the above,the pump flow and motor type can be defined when the hardware was matched by ESP.Finally,a bench test was carried out to prove the function of the pump that could build up pressure without a prepressing unit.