行驶动力学参数对RDE实验结果的影响研究

For more effectively controlling the emissions in real road driving, China-VI regulation for light vehicles provisions the requirements for real driving emission (RDE) test. Because there is no fixed driving cycle, so the road traffic conditions and the driving behavior of drivers have significant effects on the results of RDE test, and hence on the objective evaluation of real vehicle emissions. In this paper, a typical vehicle is chosen to study the effects of different driving behaviors on real road vehicle emissions. The results show that the emissions of NO_x and PN have obvious correlations with vehicle dynamics parameters v•a_{pos_}[95] and RPA, while CO emission has not. Under urban condition, NO_x emission increases with the rise of v•a_{pos_}[95], while PN emission rises with the increase of RPA. Under suburban and high speed driving conditions NO_x emission has rather strong correlation with RPA, while PN emission has strong correlation with both v•a_{pos_}[95] and RPA.