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Speed-dependent emission of air pollutants from gasoline-powered passenger cars

Authors
Jung, SungwoonLee, MeehyeKim, JongchoonLyu, YoungsookPark, Junhong
Issue Date
2011
Publisher
TAYLOR & FRANCIS LTD
Keywords
emission characteristics; gasoline passenger cars; three-way catalyst; vehicle mileage; fuel consumption
Citation
ENVIRONMENTAL TECHNOLOGY, v.32, no.11, pp.1173 - 1181
Indexed
SCIE
SCOPUS
Journal Title
ENVIRONMENTAL TECHNOLOGY
Volume
32
Number
11
Start Page
1173
End Page
1181
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/114933
DOI
10.1080/09593330.2010.505611
ISSN
0959-3330
Abstract
In Korea emissions from motor vehicles are a major source of air pollution in metropolitan cities, and in Seoul a large proportion of the vehicle fleet is made up of gasoline-powered passenger cars. The carbon monoxide (CO), hydrocarbons (HC), oxides of nitrogen (NOx) and carbon dioxide (CO2) contained in the exhaust emissions from 76 gasoline-powered passenger cars equipped with three-way catalysts has been assessed by vehicle speed, vehicle mileage and model year. The results show that CO, HC, NOx and CO2 emissions remained almost unchanged at higher speeds but decreased rapidly at lower speeds. While a reduction in CO, HC and NOx emissions was noticeable in vehicles of recent manufacture and lower mileage, CO2 emissions were found to be insensitive to vehicle mileage, but strongly dependent on gross vehicle weight. Lower emissions from more recent gasoline-powered vehicles arose mainly from improvements in three-way catalytic converter technology following strengthened emission regulations. The correlation between CO2 emission and fuel consumption has been investigated with a view to establishing national CO2 emission standards for Korea.
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Lee, Mee hye
이과대학 (지구환경과학과)
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