Analyzing Impact of Load Sensing Proportional Valve on Automobile Braking Utilization Rate
-
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。Abstract: 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.
-
[1] 余志生.汽车理论[M].北京:机械工业出版社,2009 [2] 何仁,何建清.装用电涡流缓速器的汽车制动性能分析[J].江苏大学学报(自然科学版),2004,25(1):29～32 [3] 姜继海,苏文海,陈宏钧等.汽车液压感载比例阀性能试验台的研制[J].汽车技术,2006,(9):34～36 [4] 朱忠华,胡景煌.具有感载比例阀的轻型客车制动系统分析及实验验证[J].合肥工业大学学报(自然科学版),2007,30(4):498～501 [5] 饶峻,黄虎.气压制动系统制动压力调节方法的研究[J].上海工程技术大学学报,2005,19(3):220～224 [6] 陈家瑞.汽车构造(下册)[M].北京:机械工业出版社,2003 [7] Lister R D.Retention of Directional Control when Braking[R].Warren dale PA:SAE Paper 650092,1965 -
点击查看大图
计量
- 文章访问数: 126
- HTML全文浏览量: 23
- PDF下载量: 5
- 被引次数: 0
下载:
