摘要
准确获取制动力分配系数范围是分析车辆制动性能的关键。主要研究某电动客车的电池布局对车辆制动性能的影响。基于车辆质心位置及制动力分配理论,根据制动法规规定的制动力分配系数范围,对某电动客车的制动性能进行了分析;根据建立的电池位置模型,探讨了不同电池布置位置对车辆空载和满载制动力分配系数的影响,并对比分析了新方案与原方案不同附着路面的车辆空载和满载时的制动性能。结果表明:电池质心位置至后轴距离为2.215m时,车辆的制动力分配系数取得最大值,此时车辆空载制动距离较原方案减小幅度可达3.8%,且车辆在低附着路面的制动距离减小更为明显。研究结果可为电动车电池布局提供一定的理论依据。
Accurate acquisition of braking force distribution coefficient is crucial for the automobile braking performance. It focuses on the issue of effect analysis of battery layout on braking performance of an electric bus. Based on the theory of braking force distribution and the centroid location of vehicle mass, braking performance of the electric vehicle is analyzed according to range of braking force distribution coefficient satisfying braking regulation acquired by MATLAB software. Based on model of battery position,the effect of vehicle braking force distribution coefficient for different battery position with conditions of empty load and full load is discussed in detail,and vehicle braking performance of new scheme and original plan is analyzed respectively. The results show that maximum of the vehicle braking force distribution coefficient is obtained when the distance between battery mass center and vehicle rear axle is 2.215m,and at this time braking distance without load could reduce 3.8% compared with the original plan,and the effect of optimization on vehicle braking distance in the low-adhesion roads is more significant. Research results presented may be helpful for electric vehicle battery arrangement.
出处
《机械设计与制造》
北大核心
2015年第8期61-65,共5页
Machinery Design & Manufacture
基金
国家自然科学基金项目(51465023)
昆明理工大学人才培养项目(KKSY20140065)
关键词
电池布局
制动效能
制动力分配系数
电动客车
Battery Layout
Braking Efficiency
Brake Force Distribution Coefficient
Electric Bus
