中文摘要：

为研究哈尔滨市乙醇汽油车行驶中的尾气排放情况，采用遥感监测技术对该市市区内机动车实际行驶工况下的污染物排放进行了长期监测和分析；重点研究了行驶车速、负载和使用频率对排放因子的影响。研究结果表明：在哈尔滨市区主要的机动车排放污染来源于乙醇燃料车辆的排放，总数约占10%的高排污车辆的CO和HC排放量对总污染的贡献率分别达到37％和53%，对NOx的贡献近45％；较低的行驶车速、较大的负载和使用频率是导致车辆产生较高排放因子的主要因素。

英文摘要：

In order to study the exhaust emissions of the ethanol-powered vehicles running in Harbin City, remote sensing monitoring technique was used to continually monitor analyze the actual condition of motor vehicle emissions. The results show that the main emission pollution comes from the ethanol-powered vehicles, about 10% of which, the high emission vehicles cause 37% of the total CO pollution and 53% of HC emission and the Noxemission accounts for 45%. Meanwhile, the speed, load and using frequency have been studied to find out their influence on the emission factor and lower speed, larger load and higher using frequency are major factors for higher level of vehicle emission factor.