TY - JOUR
T1 - Speed-dependent emission of air pollutants from gasoline-powered passenger cars
AU - Jung, Sungwoon
AU - Lee, Meehye
AU - Kim, Jongchoon
AU - Lyu, Youngsook
AU - Park, Junhong
N1 - Funding Information:
This study was supported by the Transportation Pollution Research Center, National Institute of Environmental Research, Republic of Korea.
PY - 2011/8
Y1 - 2011/8
N2 - 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 CO 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, CO 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 CO CO 2 emission and fuel consumption has been investigated with a view to establishing national CO CO2 emission standards for Korea.
AB - 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 CO 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, CO 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 CO CO 2 emission and fuel consumption has been investigated with a view to establishing national CO CO2 emission standards for Korea.
KW - emission characteristics
KW - fuel consumption
KW - gasoline passenger cars
KW - three-way catalyst
KW - vehicle mileage
UR - http://www.scopus.com/inward/record.url?scp=79960553095&partnerID=8YFLogxK
U2 - 10.1080/09593330.2010.505611
DO - 10.1080/09593330.2010.505611
M3 - Article
C2 - 21970159
AN - SCOPUS:79960553095
VL - 32
SP - 1173
EP - 1181
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
SN - 0959-3330
IS - 11
ER -
