摘要
以商用车电控气压制动系统自动调压阀为研究对象,基于自动调压阀工作原理,建立其出口压力变化率理论解析模型;搭建自动调压阀测试系统,对模型正确性进行验证;与传统气压制动系统中继动阀进行对比实验,结果显示,自动调压阀压力变化率较小,响应更优。通过改变自动调压阀不同结构参数,如控制腔体积、单向阀开口、卸压孔直径以及活塞下/上表面积之比等,利用仿真得到这些参数对压力变化率的影响规律,为研发满足平顺性需求的自动调压阀提供设计及优化依据。
For the automatic pressure regulating valve,the theoretical and analytical model of the output pressure changing rate is established in this work. An automatic pressure regulating valve test system is built for verifying the reliability of the model. Compared with the conventional relay valve of air brake system,the experimental results show that the automatic pressure regulating valve has a lower pressure change rate and a better response. The influence of different structural parameters,such as the control chamber’s volume,the check valve’s opening diameter,the pressure relief hole’ s diameter,and the ratio of the surface areas between upper/lower pistons,are obtained from the comparative simulation. The outcome can provide a design and optimization guideline for the development of the automatic pressure regulating valve,in terms of improving its ride comfort.
作者
刘子豪
杨凡
包汉伟
李刚炎
LIU Zihao;YANG Fan;BAO Hanwei;LI Gangyan(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China)
基金
博士后自主创新基金资助项目(2019IVA091)
中国博士后科学基金资助项目(2018M642937)
关键词
商用车
电控气压制动
自动调压阀
压力变化率
commercial vehicle
electric control air brake system
automatic pressure regulating valve
pressure change rate
作者简介
刘子豪(1995-),男,山东济宁人,武汉理工大学机电工程学院硕士研究生.
