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

Sungwoon Jung, Meehye Lee, Jongchoon Kim, Youngsook Lyu, Junhong Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

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 (CO 2) 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 CO 2 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 CO 2 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 CO 2 emission standards for Korea.

Original languageEnglish
Pages (from-to)1173-1181
Number of pages9
JournalEnvironmental Technology
Volume32
Issue number11
DOIs
Publication statusPublished - 2011 Aug 1

Fingerprint

Gasoline
Air Pollutants
Passenger cars
Carbon Monoxide
carbon monoxide
automobile
Hydrocarbons
hydrocarbon
Korea
speed
air pollutant
Nitrogen Dioxide
Catalytic converters
exhaust emission
Air Pollution
fuel consumption
nitrogen dioxide
Motor Vehicles
vehicle
Air pollution

Keywords

  • emission characteristics
  • fuel consumption
  • gasoline passenger cars
  • three-way catalyst
  • vehicle mileage

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Water Science and Technology

Cite this

Speed-dependent emission of air pollutants from gasoline-powered passenger cars. / Jung, Sungwoon; Lee, Meehye; Kim, Jongchoon; Lyu, Youngsook; Park, Junhong.

In: Environmental Technology, Vol. 32, No. 11, 01.08.2011, p. 1173-1181.

Research output: Contribution to journalArticle

Jung, Sungwoon ; Lee, Meehye ; Kim, Jongchoon ; Lyu, Youngsook ; Park, Junhong. / Speed-dependent emission of air pollutants from gasoline-powered passenger cars. In: Environmental Technology. 2011 ; Vol. 32, No. 11. pp. 1173-1181.
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