Emissions from a vehicle fitted to operate on either petrol or compressed natural gas

Ristovski, Zoran, Morawska, Lidia, Ayoko, Godwin A., Johnson, Graham R., Gilbert, Dale, & Greenaway, Chris (2004) Emissions from a vehicle fitted to operate on either petrol or compressed natural gas. Science of the Total Environment, 323, pp. 179-194.

View at publisher


The purpose of this work was to evaluate the physical and chemical properties of emission products from a sixcylinder sedan car under a variety of operating conditions, before and after it has been converted to compressed natural gas (CNG) fuel.The specific focus of the measurements was on emission levels and characteristics of ultra fine particles and the emission levels together with the emissions of gaseous pollutants for a range of operating conditions before and up to 3 months after the vehicle was converted are presented and discussed in the paper.The investigations showed that converting a petrol operating vehicle to CNG has the potential of reducing some of the emissions and thus risks, while it does not appear to have an impact on others.In particular there was no statistically significant change in the emission of particles for the vehicle operating on petrol, before the conversion, compared to the emissions for the vehicle operating on CNG, after the conversion.Ther e was a significant lowering of emissions of total polycyclic aromatic hydrocarbons and formaldehyde when the vehicle was operated on CNG, and a reduction of global warming potential was also observed when the vehicle was run on CNG, but the later gain is only at high vehicle speedsyloads, and would thus have to be considered in view of traffic and transport models for the region (in these models vehicle speed is an important parameter).

Impact and interest:

39 citations in Scopus
Search Google Scholar™
27 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

617 since deposited on 12 Dec 2006
232 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 5792
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal’s website (see link) or contact the author. Author contact details: z.ristovski@qut.edu.au
Keywords: Emissions, Natural gas, Global warming potential
DOI: 10.1016/j.scitotenv.2003.10.023
ISSN: 0048-9697
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000) > ATMOSPHERIC SCIENCES (040100) > Atmospheric Sciences not elsewhere classified (040199)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2004 Elsevier
Deposited On: 12 Dec 2006 00:00
Last Modified: 29 Feb 2012 13:03

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page