汽车含气制动液的有效体积弹性模量的研究  

Research on effective bulk modulus of brake fluid with air containing in automobile brake system

作　　者：梁思伟 李孝禄 朱俊江 钱丽娟 李运堂 

机构地区：[1]中国计量大学机电工程学院,浙江杭州310018

出　　处：《中国计量大学学报》2017年第4期454-459,466,共7页Journal of China University of Metrology

基　　金：浙江省公益技术研究项目(No.2016C31112);浙江省自然科学基金资助项目(No.LY15E050014;LY17A020008)

摘　　要：体积弹性模量是液压系统的一个重要参数,制动液中含有气体会对液压制动系统的稳定性、刚度以及响应时间等造成很大影响,因此分析含气制动液的体积弹性模量很有必要.文中对比分析了其他学者提出的有效体积弹性模量理论模型,并结合液压制动系统自身的特点、理想气体状态方程、亨利定律和质量守恒定律等,分析推导了气体在制动系统工作过程中发生压缩和溶解两个过程情况下,制动液的有效体积弹性模量理论模型.从文中的理论模型研究,可以明显看出初始含气率越高,制动液的有效体积弹性模量越小.Bulk modulus is an important parameter of hydraulic system.The containing air in brake fluid has great impact on the stability,stiffness and response time of hydraulic braking system.Therefore,it is necessary to analyze the effective bulk modulus of brake fluid with air containing.This paper analyzed some theory models of effective bulk modulus.Combined with the characteristics of hydraulic brake system,the ideal gas law,Henry＇s law and the law of mass conservation,we deduced the theory model of effective bulk modulus of brake fluid under the air-compressed and air-dissolved conditions in the braking system.According to this theoretical model,it is obvious that the initial gas content is higher,the effective bulk modulus of brake fluid is smaller.

关 键 词：液压制动系统 有效体积弹性模量 含气率 空气压缩 空气溶解 

分 类 号：U469.91[机械工程—车辆工程]