Three vehicles fueled with China Ⅴ gasoline ,low aromatic E10 and low olefins E10 that met China Ⅰ ,China Ⅲ and China Ⅴ emission regulation respectively were tested according to the NEDC and WLTC cycles And the particulate matter (PM ) and the particle number (PN) were analyzed .The results showed that the ethanol gasoline could reduce PM emission sig-nificantly under the two cycles .Compared with China Ⅴ gasoline ,the low aromatics E10 could reduce the PM emission of Chi-na Ⅰ and China Ⅲ vehicle by 19% and 35% respectively and the low olefins E10 could reduce the PM emission of China Ⅴ vehi-cle by 46% .In addition ,ethanol gasoline could reduce the PN emission of WLTC cycle .The average reduction of low aromatics E10 and low olefins E10 was 43% and 32% respectively .%在符合国 Ⅰ 、国 Ⅲ 、国 Ⅴ 标准的3辆试验车上,分别燃用国 Ⅴ 汽油 、低芳烃E10、低烯烃E103种燃料,进行了NEDC和WLTC工况下的常温冷起动排放试验,重点对颗粒物(PM)排放量和粒子数量(PN)进行分析.结果表明:在两种工况下,燃用乙醇汽油相比普通汽油能大幅降低车辆的PM排放,低芳烃E10对国 Ⅰ 和国 Ⅲ 车辆PM降低效果最明显,分别下降19%和35%,低烯烃E10对国 Ⅴ 车辆PM降低效果最好,下降46%;在WLTC工况下燃用乙醇汽油能大幅降低车辆PN排放,其中低芳烃E10平均降低43%,低烯烃E10平均降低32%.
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