采用4 挡变速器参数画出C 曲线。 其中，横坐标“燃油经济性”采用NEDC 循环行驶工况油耗，纵坐标“动力性”采用0~80km/h 原地起步加速时间；主传动比的值分别为4.82、5.3、5.83、6.12 和6.43。(The C curve is drawn by the parameters of the 4 gear transmission. Among them, the "fuel economy"

里面有多种matlab/mat格式的行驶循环工况(There are many kinds of driving cycle conditions in matlab/mat format.)

总结一些车辆行驶工况，方便科研工作，增加些资料(Summarize some vehicle driving conditions, facilitate scientific research, and add some information)

GB∕T 38146.2-2019 中国汽车行驶工况 第2部分：重型商用车辆工况循环mat文件(GB / T 38146.2-2019 driving conditions of Chinese vehicles Part 2: mat documents of heavy commercial vehicles)