汽油车稳态工况法污染物统计分析及限值修订研究

Statistics and Standard Revision of Exhaust Pollutants by Acceleration Simulation Mode for In-use Gasoline Vehicle

根据南京市2014年简易稳态工况法(ASM)排放检测数据,对照DB 32/966—2006标准中的限值,对不同类别车辆的检测数据分别进行统计分析。结果表明,各组样本都属于右偏态分布,超标车辆在整个样本中的样本率都处于较低的水平,据此对该标准中的相应限值做出了修订,并分别以合格率为90%和85%进行了各污染物排放限值的讨论。

According to the acceleration simulation mode detection data of the light-duty gasoline vehicle of Nanjing in 2014 and compared with the limitation of the standard of DB 32/966-2006, we analyzed the emission data of the different classification of the gasoline vehicles. The results showed that the samples were geared to the skewed distribution, the ratio the vehicles that can＇t pass the inspection were quite low. Then we revised the limitation of the standard of DB 32/966-2006 according to the data and the analyses of the results above and then made the further discussion of the limitation of the qualification rate, which was between 90% and 85%.