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Performance and gaseous and particle emissions from a liquefied petroleum gas (LPG) fumigated compression ignition engine

Surawski, N, Miljevic, B C, Bodisco, T A, Rong, S, Brown, R J and Ristovski, Z 2014, Performance and gaseous and particle emissions from a liquefied petroleum gas (LPG) fumigated compression ignition engine, Fuel, vol. 133, pp. 17-25, doi: 10.1016/j.fuel.2014.04.093.

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Title Performance and gaseous and particle emissions from a liquefied petroleum gas (LPG) fumigated compression ignition engine
Author(s) Surawski, N
Miljevic, B C
Bodisco, T AORCID iD for Bodisco, T A
Rong, S
Brown, R J
Ristovski, Z
Journal name Fuel
Volume number 133
Start page 17
End page 25
Total pages 9
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2014-10-01
Keyword(s) Liquefied petroleum gas
Engine performance
Gaseous emissions
Particulate emissions
Summary In this study, an LPG fumigation system was fitted to a Euro III compression ignition (CI) engine to explore its impact on performance, and gaseous and particulate emissions. LPG was introduced to the intake air stream (as a secondary fuel) by using a low pressure fuel injector situated upstream of the turbocharger. LPG substitutions were test mode dependent, but varied in the range of 14-29% by energy. The engine was tested over a 5 point test cycle using ultra low sulphur diesel (ULSD), and a low and high LPG substitution at each test mode. The results show that LPG fumigation coerces the combustion into pre-mixed mode, as increases in the peak combustion pressure (and the rate of pressure rise) were observed in most tests. The emissions results show decreases in nitric oxide (NO) and particulate matter (PM2.5) emissions; however, very significant increases in carbon monoxide (CO) and hydrocarbon (HC) emissions were observed. A more detailed investigation of the particulate emissions showed that the number of particles emitted was reduced with LPG fumigation at all test settings – apart from mode 6 of the ECE R49 test cycle. Furthermore, the particles emitted generally had a slightly larger median diameter with LPG fumigation, and had a smaller semi-volatile fraction relative to ULSD. Overall, the results show that with some modifications, LPG fumigation systems could be used to extend ULSD supplies without adversely impacting on engine performance and emissions.
Language eng
DOI 10.1016/j.fuel.2014.04.093
Field of Research 090599 Civil Engineering not elsewhere classified
030699 Physical Chemistry not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Elsevier
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Document type: Journal Article
Collection: School of Engineering
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