摘要
为了考察在各种附着系数的路面上汽车的制动性能,分析了理想汽车前、后车轮制动力分配曲线与前、后制动器制动力分配曲线之间的匹配关系。引入能够反映制动性能的概念"制动力利用率"作为评价方法,根据不同的匹配关系导出对应的制动力利用率算法。针对某轻型客车,详细地分析了其在不同附着系数路面上的制动性能。同时改变制动器制动力分配系数,分析不同匹配关系下汽车的制动性能。结果表明:随着路面附着系数的增加,制动力利用率呈现先增后减的趋势;随着制动器制动力分配系数的增大,汽车在低附着系数路面的制动力利用率降低,在高附着系数路面的制动力利用率升高;制动力利用率评价法能够有效地评价汽车在不同附着系数路面上的制动性能。
With the braking performance investigated when vehicle is on the road of different road adhesion coefficient, the match of ideal braking force distribution curves of front and rear wheels and front and rear arresters is studied. The concept of braking performance to reflect ＂braking force utilization＂ is introduced. The braking force utilization algorithm came out depending on the different matches. A light bus is chosen as an example. Vehicle braking performance under different road adhesion coefficient is studied in detail. At the same time, vehicle braking performance under different matches is studied with braking force distribution value changed. The results indicate that braking force utilization appears first increased and then decreased with the increase of road adhesion coefficient. Along with the increase of braking force distribution value, the braking force utilization decreased on low adhesion coefficient road, then increased on high adhesion coefficient road. The method could evaluate the braking performance on the road of different road adhesion coefficient efficiently.
出处
《公路》
北大核心
2013年第4期76-79,共4页
Highway
基金
国家自然科学基金资助项目
项目编号50805070
江苏省教育厅自然基金资助项目
项目编号07KJD580046
关键词
路面附着系数
制动力利用率
制动性能
制动力分配曲线
road adhesion coefficient
braking force utilization
braking performance
braking force distribution curve
