ESP液压执行单元柱塞泵动态特性仿真与试验  

Dynamics Characteristic Simulation and Test of Pump of Hydraulic Control Unit of ESP

作　　者：王伟玮[1] 宋健[1] 李亮[1] 于良耀[1] 李红志[1] 

机构地区：[1]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《农业机械学报》2012年第4期1-5,14,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(50905092)

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。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.

关 键 词：柱塞泵 电子稳定程序 液压执行单元 

分 类 号：U461.6[机械工程—车辆工程] TH137.51[交通运输工程—载运工具运用工程]