%0 Journal Article
%T Real-world emission characteristics of natural gas-gasoline bi-fuel vehicles<br>天然气-汽油双燃料车实际道路排放特性研究
%A XIE Shuxi
%A HU Jingnan
%A BAO Xiaofeng
%A LI Zhenhu
%A WANG Haitao
%A ZHANG Kesong
%A <br>解淑霞
%A 胡京南
%A 鲍晓峰
%A 李振华
%A 王海涛
%A 张克松
%J 环境科学学报
%D 2011
%I 
%X 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.
%K portable emissions measurement system (PEMS)
%K compressed natural gas (CNG)
%K CO2
%K NOx<br>便携式排放测试系统(PEMS)
%K 压缩天然气(CNG)
%K 二氧化碳
%K 氮氧化物
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=2B168B6160CED65F279E358008EF3FB7&yid=9377ED8094509821&vid=4AD960B5AD2D111A&iid=708DD6B15D2464E8&sid=EF719C6D1AC7F445&eid=685BB337AC54A626&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=38