中文摘要：

利用便携式排放检测系统（PEMS）技术，对混合动力车PRIUS和传统汽油车远舰进行了市区道路的实时检测实验，分析了PRIUS和远舰在怠速、匀速、加速、减速各种工况下，拥堵和非拥堵路段，以及上、下坡路段上的不同油耗和排放特性。实验结果表明，在整个市区测试循环中，PRIUS的油耗为远舰车的62．6％，各排放均低于远舰的1／3；PRIUS在怠速工况下的排放贡献率几乎为零；PRIUS在拥堵路段和非拥堵路段上的油耗分别为远舰车的55．1％和87．4％，在拥堵路上的各排放均低于远舰车的1／4；远舰车在拥堵路上的各排放均明显增大，是非拥堵路段上各排放因子的1．45～2.38倍，而PRIUS在拥堵路段上的排放没有显著增加；PRIUS和远舰在下坡路段上排放均有十分明显的下降。

英文摘要：

A real-time measurement test on gasoline-fueled vehicle Yuanjian is conducted on a hybrid electric vehicle （HEV） PRIUS and a conventional urban roads using portable emission measurement system （PEMS）. Their emission and fuel consumption performances are ding idling, cruising, accelerating and decelerating, as well as co analyzed under different driving conditions inclu- ngested and non-congested, uphill and downhill. The results show that, in the whole urban testing cycle, the fuel consumption of PRIUS is only 62.6% of that of Yuanjian, and the emissions of PRIUS are all lower than one third of those from Yuanjian. The emission contribu- tion of idling is almost zero for PRIUS. The fuel consumption of PRIUS on congested and non-congested roads are 55.1% and 87.4% of those of Yuanjian respectively, and the emissions of PRIUS are all lower than one fourth of those from Yuanjian on congested roads. The emission factors of Yuanjian on congested roads are obviously higher than those on non-congested roads （ increasing by 45% to 138% ） , while those of PRIUS show no much changes with road congestion.