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利用AEP - 5汽车专用数据测试分析仪 ,对HEV6 70 0电动客车进行道路试验 .通过试验分析 ,判断其传动系与整车参数匹配的合理性 .在不需知道车辆的风阻系数、迎风面积及道路滚动阻力系数的情况下 ,根据滑行试验结果进行数学运算 ,求出每一车速下车辆的道路及空气阻力值 ,再与加速过程结果比较 ,进而求出电动机的输出转矩和工作转速 ,由此分析车辆行驶过程中电动机的工作状态 .结果表明 ,试验车的电动机主要工作于低效率区 ,说明其传动系的参数与整车参数匹配不合理 .提出了重新设计传动系 ,优化其传动比的建议 .
AEP - 5 vehicle - specific data test and analysis instrument was used to carry out road test on HEV670 0 electric bus.According to the experimental analysis, the rationality of the matching between the driveline and the vehicle parameters was judged.Without knowing the vehicle drag coefficient, windward area and Road rolling resistance coefficient of the case, according to the results of the taxi test mathematical operation, calculate the vehicle at each speed of the road and air resistance value, and then compared with the acceleration process results, and then find the motor output torque and operating speed from The results show that the motor of the test car mainly works in the low efficiency area, which shows that the parameters of the drive train and the vehicle parameters are unreasonable.It is proposed to redesign the drive train and optimize its transmission ratio Suggestions.