研究报告
解淑霞,胡京南,鲍晓峰,李振华,王海涛,张克松.天然气-汽油双燃料车实际道路排放特性研究[J].环境科学学报,2011,31(11):2347-2353
天然气-汽油双燃料车实际道路排放特性研究
- Real-world emission characteristics of natural gas-gasoline bi-fuel vehicles
- 基金项目:中央级公益性科研院所基本科研业务专项基金(No.2008KYYW03, 2009KYYW08);国家自然科学基金(No.50808169)
- 张克松
- 山东大学能源与动力工程学院, 济南 250061
- 摘要:为研究使用天然气对轻型汽车排放的影响,利用便携式排放测试系统(PEMS),对25辆压缩天然气-汽油双燃料出租车在实际道路上分别使用汽油和天然气时的CO2、CO、NOx和THC排放进行了对比测试. 研究结果表明: 实际道路上,原装车使用天然气相比汽油时,CO2、CO的排放平均分别降低22%和24%,NOx和THC的排放平均分别增加27%和22%;改装车使用天然气比使用汽油时,CO2、CO的排放平均分别降低25%和32%,NOx和THC的排放平均分别增加200%左右. 双燃料车使用天然气相对使用汽油时的CO、NOx和THC排放变化与发动机的改装技术、尾气组成及三效催化剂性能等有关.
- Abstract:The CO2, CO, NOx and total hydrocarbon(THC) emissions of 25 compressed natural gas (CNG)-gasoline bi-fuel taxies were tested by portable emissions measurement system (PEMS) to investigate the impact of CNG on the emissions of light-duty vehicles. Results showed that CO2 and CO emissions from original equipment manufacturer (OEM) vehicles on average were reduced by 22% and 24%, respectively, when the fuel was switched from gasoline to CNG. In comparison, NOx and THC emissions increased by 27% and 22%, respectively, as a result of fuel switch. Using CNG for converted vehicles led to decrease of CO2 and CO emissions by 25% and 32% respectively, but increase of NOx and THC emissions by about 200% compared to gasoline. Changes of CO, NOx and THC emissions with gasoline-to-CNG switch may be related to the conversion of engines, exhaust composition and the performance of three way catalysts.
摘要点击次数: 3205 全文下载次数: 4527