One was measured for the entire cycle with constant volume sampling (CVS, CUSSONS, P1800/P1500). The other was collected for five representative steady-state modes including both the idle stage and four cruising stages,which were 15 km h−1 under the first gear mode, 32 km h−1 cruising stage under the second, 35 and 50 km h−1 under the third, respectively.