摘要
为了解在用化油器轻型汽油车的污染物排放现状及各因素对排放的影响,分别使用简易瞬态工况法和双怠速法进行了实车测试。结果表明,20%高排放车的CO、HC和NOx排放分别占该类车辆排放总量的51.9%、55.7%和37.5%;车辆CO排放随车龄、行驶里程、基准质量的增加而增加,但HC排放则出现相反的趋势;基于双怠速法检测,超标车的CO和HC单位行驶里程总体排放均值为达标车的2.8和3.0倍。
Vehicles were tested under simple short transient driving mode and two-speed idle conditions,to estimate the pollutants emission from in-service gasoline automobile with carburetor engine and analysis the influence of different factors. The results show that the emission of CO, HC and NOx from high-emission vehicles（ 20% of total） contribute 51.9%, 55.7%, and 37.5% to the total emissions, respectively. The vehicles with larger base-matter,longer mileages or ages will exhaust more CO, but less HC. In the results tested under two-speed idle conditions,the mean values of CO and HC emission from dirty vehicle are 2.8 and 3.0 times of that from clean ones, respectively.
出处
《广州环境科学》
2010年第2期21-24,共4页
Guangzhou Environmental Science
关键词
汽油车
化油器
污染物排放
gasoline automobile carburetor pollutant emission
