Investigating on-road fuel consumption and emissions of a low-emission car

Chun Shun Cheung, K. S. Tsang, W. T. Hung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper reports the analysis of on-road emissions of a 2005 model-year petrol car. The concentrations of CO, HC and NOx were measured directly from the tailpipe while the car was driven in selected urban areas in Hong Kong. The fuel consumption and emissions were examined both macroscopically and microscopically. It was found that the fuel consumption and emission data were widely dispersed with vehicle speed due to the different on-road parameters which could affect the fuel consumption and emission level. The pollutant emissions were found to be lower than the Euro-4 standard. The fuel consumption and emissions were lower at higher driving speed. The pollutants emitted and fuel consumed during the idling mode formed a significant portion of the trip, except for NOx emission which was extremely low at idling. Microscopically, it was found that fuel consumption as well as pollutant emission decrease with the average driving speed of a driving segment or the instantaneous driving speed. Thus congestion leads to increased fuel consumption and pollutant emission, even for a low-emission car.
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference of Hong Kong Society for Transportation Studies
Subtitle of host publicationTransportation and Management Science
Pages311-319
Number of pages9
Publication statusPublished - 1 Dec 2008
Event13th International Conference of Hong Kong Society for Transportation Studies: Transportation and Management Science - Kowloon, Hong Kong
Duration: 13 Dec 200815 Dec 2008

Conference

Conference13th International Conference of Hong Kong Society for Transportation Studies: Transportation and Management Science
CountryHong Kong
CityKowloon
Period13/12/0815/12/08

ASJC Scopus subject areas

  • Transportation

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