Based on the comparisons of average parameters and speed composing parameters between real-road testing data in Tianjin and testing procedures of ECE-15,FTP-75, it is proved that there exist great distinctions between their properties.

• 根据对两种被测车型在天津市实际道路上行驶的总体平均参数和速度构成参数与 ECE- 15、FTP-75两种标准排放测试循环的比较 ,证明实测结果与目前所采用的标准测试循环的行驶特性有明显差异。