Physicochemical characterization of particulate emissions from a compression ignition engine employing two injection technologies and three fuels

Surawski, N. C., Miljevic, B., Ayoko, G. A., Roberts, B. A., Elbagir, S., Fairfull-Smith, K. E., Bottle, S. E. and Ristovski, Z. D. (2011) Physicochemical characterization of particulate emissions from a compression ignition engine employing two injection technologies and three fuels. Environmental Science and Technology, 45 13: 5498-5505. doi:10.1021/es200388f


Author Surawski, N. C.
Miljevic, B.
Ayoko, G. A.
Roberts, B. A.
Elbagir, S.
Fairfull-Smith, K. E.
Bottle, S. E.
Ristovski, Z. D.
Title Physicochemical characterization of particulate emissions from a compression ignition engine employing two injection technologies and three fuels
Journal name Environmental Science and Technology   Check publisher's open access policy
ISSN 0013-936X
1520-5851
Publication date 2011-07-01
Sub-type Article (original research)
DOI 10.1021/es200388f
Open Access Status Not Open Access
Volume 45
Issue 13
Start page 5498
End page 5505
Total pages 8
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Abstract Alternative fuels and injection technologies are a necessary component of particulate emission reduction strategies for compression ignition engines. Consequently, this study undertakes a physicochemical characterization of diesel particulate matter (DPM) for engines equipped with alternative injection technologies (direct injection and common rail) and alternative fuels (ultra low sulfur diesel, a 20% biodiesel blend, and a synthetic diesel). Particle physical properties were addressed by measuring particle number size distributions, and particle chemical properties were addressed by measuring polycyclic aromatic hydrocarbons (PAHs) and reactive oxygen species (ROS). Particle volatility was determined by passing the polydisperse size distribution through a thermodenuder set to 300 °C. The results from this study, conducted over a four point test cycle, showed that both fuel type and injection technology have an impact on particle emissions, but injection technology was the more important factor. Significant particle number emission (54%-84%) reductions were achieved at half load operation (1% increase-43% decrease at full load) with the common rail injection system; however, the particles had a significantly higher PAH fraction (by a factor of 2 to 4) and ROS concentrations (by a factor of 6 to 16) both expressed on a test-cycle averaged basis. The results of this study have significant implications for the health effects of DPM emissions from both direct injection and common rail engines utilizing various alternative fuels.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
 
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