目 次
某微型客车制动力分配优化设计
王宣锋 应国增 黄朝胜
(中国第一汽车集团公司技术中心)
【摘要】提出了M1类车辆空,满载制动力分配系数的计算公式.以理想制动力分配曲线与实际应用的两段不同斜率制动力分配线之间面积最小为优化目标,同时保证满载状况时的制动效率不小于75%,优化设计了某微型客车变比值的制动力分配曲线.考虑制动器推出压耗,建立了各轴制动力与管路液压的转化公式,由优化后的变比值制动力分配线确定了液压比例阀的特性曲线.对制动力分配曲线优化前,后的微型客车制动距离进行的对比计算表明,优化后的微型客车制动距离明显减小.
主题词:微型客车 制动力 分配
Optimized Design of Brake Force Distribution for a Mini Bus
Wang Xuanfeng,Ying Guozeng,Huang Chaosheng
(China FAW Group Corporation R&D Center)
【Abstract】Formulas are proposed about braking force distribution coefficients of unladen and laden M1 vehicles. The optimized goal is to obtain minimum area between the ideal braking force distribution curves and practical two brake force distribution lines with different slope, meanwhile it should be ensured that under the laden condition the brake efficiency is not less than 75%, then the variable braking force distribution curve for a mini bus is optimized. The transformation formulas between the axles braking forces and the pipeline hydraulic pressure have been established by considering the brake pushing pressure loss, and the hydraulic proportioning valve's characteristic curve has been determined by the optimized variable brake force distribution curves. Finally after working on the comparative computation of the braking distance, the result shows that the braking distance of the optimized mini bus has been obviously reduced.
Key words: Mini bus; Braking force; Distribution
基于Excel平台的车门气压阻效应计算软件的开发研究
高云凯 高大威 余海燕
(同济大学)
【摘要】通过对汽车车门气压阻效应的理论分析,提出一种新的数学模型.基于Excel平台,利用VBA语言,使用数值积分方法,开发出一种用于计算车门关门能量/力中气压阻效应的应用软件.该软件不仅具有可视化的人机交互界面,而且能够方便快捷的根据需要计算出气压阻效应在关门过程中消耗的能量/力.与试验数据比较误差不超过10%,从而证明了该软件的计算准确性.
关键词:车门气压阻效应 能量 计算软件
Development for Calculation Software of Door Air Bound Effect Based on Excel
Gao Yunkai, Gao Dawei ,Yu Haiyan
(Tongji University)
【Abstract】A new mathematical model is proposed in this paper based on the theory analysis of door bound effect,. Based on Excel, the application software that is used to calculate air bound effect in door closing energy / force is developed by using language VBA and numerical value integral method. The software not only has the visual man-machine interface, but also can be used to calculate air bound effect during door closing process conveniently. Compared with the experimental data, errors are less than 10 %, so the calculation accuracy of the software is validated.

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