国3重型柴油车在实际道路行驶中的气态污染物排放  

Gaseous Pollutant Emission of China 3 Heavy-Duty Diesel Vehicles Under Real-World Driving Conditions

作　　者：李振华[1] 胡京南[1] 鲍晓峰[1] 蒲雨新 张广智 盖永田 刘顺利 

机构地区：[1]中国环境科学研究院移动源污染控制研究科技创新基地,北京100012 [2]济南汽车检测中心,山东济南250002

出　　处：《环境科学研究》2009年第12期1389-1394,共6页Research of Environmental Sciences

基　　金：国家科技基础性工作专项(2007FY240300)

摘　　要：利用SEMTECH-DS便携式排放测试系统（PEMS）,在采用高压共轨和废气再循环系统（EGR）2种技术的国3重型柴油车上开展了实际道路的气态污染物排放测试,对比了2种技术下重型柴油车在实际道路行驶中氮氧化物（NOx）和总碳氢（THC）在各速度区间内的排放强度、综合排放因子及瞬时φ（NOx）.结果表明：采用高压共轨技术的重型柴油车在除〉10-20km/h外的各速度区间内的NOx和THC平均排放强度均低于采用EGR技术的重型柴油车.采用高压共轨技术的重型柴油车φ（NOx）平均值较低,但瞬时峰值较高 采用EGR技术的φ（NOx）平均值较高,但瞬时峰值较低.Gaseous pollutant emission from a high-pressure common rail （HPCR） diesel truck and a diesel truck equipped with an EGR system were tested under real-world driving conditions using SEMTECH-DS, a portable emission measurement system （PEMS）. NOx and THC emission rates within every speed range, integrated emission factors under real-world driving conditions, and instantaneous NOx emission concentrations were compared for the two heavy duty diesel trucks with different technologies. Results showed that average emission rates of NOx and THC of the HPCR diesel truck were lower than those of the diesel truck equipped with the EGR system in every speed range except for 〉 10-20 km/h. The average NO~ emission concentration of the HPCR truck was lower, but its peak concentration jumped to a higber value. On the contrary, the average NOx emission concentration of the truck equipped with the EGR system was higher, but its peak concentration was lower.

关 键 词：PEMS 高压共轨 EGR NOx 道路排放 

分 类 号：X831[环境科学与工程—环境工程]