感载比例阀对汽车制动力利用率的影响分析  

Analyzing Impact of Load Sensing Proportional Valve on Automobile Braking Utilization Rate

作　　者：张焱[1] 刘成晔[1] 左言言[2] 贝轺轶[1] 赵景波[1] 

机构地区：[1]江苏技术师范学院汽车工程学院,常州213001 [2]江苏大学汽车与交通工程学院,镇江212013

出　　处：《机械科学与技术》2012年第5期787-790,共4页Mechanical Science and Technology for Aerospace Engineering

基　　金：江苏省教育厅自然基金项目(07KJD580046);江苏技术师范学院青年基金项目(KYY09045)资助

摘　　要：为了分析有无感载比例阀的情况下,前、后制动器制动力分配曲线与I曲线之间的匹配关系及感载比例阀对汽车制动性能的影响,引入了能够反映制动性能的概念"制动力利用率",并且根据不同的匹配关系导出了对应的制动力利用率算法;分析了有无感载比例阀的情况下制动力利用率与路面附着系数之间的关系。经过对两种情况下制动力利用率变化规律的对比分析,结果表明感载比例阀能够明显提高汽车在高附着系数路面上行驶时的制动力利用率。To analyze the two conditions that the front or rear brake has or does not have its load sensing proportional valves,the match between its braking force distribution curve and the I curve and the impact of the load sensing proportional valve on an automobile′s braking performance,we introduce the concept of braking force utilization rate,which we believe can reflect its braking performance,and work out different braking force utilization rate algorithms for different matches.Then we analyze the relationship between braking utilization rate and road adhesion coefficient.We compare the changes in the braking utilization rate under the two conditions;the comparison results show that the load sensing proportional valve can greatly increase the braking utilization rate of an automobile when it travels on the road that has a high adhesion coefficient.

关 键 词：感载比例阀 制动力利用率 路面附着系数 

分 类 号：U467.3[机械工程—车辆工程]