Potential of kerosene-diesel blends as alternative fuels for diesel engines: Perspectives from spray combustion characteristics

Wang, Z; Li, X; Xiang, L; Huang, Y; Lang, B; Cheng, X; Zhang, J

Potential of kerosene-diesel blends as alternative fuels for diesel engines: Perspectives from spray combustion characteristics

Wang, Z Li, X Xiang, L Huang, Y

Lang, B Cheng, X Zhang, J

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Fuel, 2023, 335, pp. 127112
Issue Date:: 2023-03-01

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Field	Value	Language
dc.contributor.author	Wang, Z
dc.contributor.author	Li, X
dc.contributor.author	Xiang, L
dc.contributor.author	Huang, Y https://orcid.org/0000-0001-9800-8788
dc.contributor.author	Lang, B
dc.contributor.author	Cheng, X
dc.contributor.author	Zhang, J
dc.date.accessioned	2023-01-31T22:57:39Z
dc.date.available	2023-01-31T22:57:39Z
dc.date.issued	2023-03-01
dc.identifier.citation	Fuel, 2023, 335, pp. 127112
dc.identifier.issn	0016-2361
dc.identifier.uri	http://hdl.handle.net/10453/165704
dc.description.abstract	To explore the application potential of kerosene (RP-3)/diesel blends as alternative fuels for diesel engines, the spray combustion characteristics of neat diesel, neat RP-3 and RP-3/diesel blends (varied from 25 % to 75 % of RP-3) were systematically compared in an optical constant volume combustion chamber under non-evaporating (0 % O2, 293 K), evaporating (0 % O2, 900 K) and combustion (21 % O2, 900 K) conditions. Their spray, evaporation, combustion and soot emission characteristics were visualized using various high-speed imaging techniques. The results show that RP-3/diesel blending ratio has significant effects on the spray and combustion processes. Under non-evaporating condition, higher RP-3 contents slightly decrease the spray penetration but increase the corresponding spray angle and volume. Under evaporating condition, the spray angle and volume follow the similar trend as those under non-evaporating condition except for slight fluctuations, but the liquid length decreases with the increase of blending ratio. Unexpectedly, the vapor penetrations of neat diesel and RP-3 are similar and longer than those of their blends. Under combustion condition, both the ignition delay and flame lift-off length increase with the RP-3 blending ratio. In addition, RP-3 component reduced the peak soot mass by 9.78 %, 14.7 % and 17.56 % for R25, R50 and R75, respectively. In summary, this study suggests that RP-3/diesel blends are suitable alternative fuels for diesel engines, in terms of faster evaporation and lower soot emissions. We recommend a blending ratio of 25 % as the most promising fuel for further investigations in real engines.
dc.language	en
dc.publisher	Elsevier BV
dc.relation	http://purl.org/au-research/grants/arc/DE220100552
dc.relation.ispartof	Fuel
dc.relation.isbasedon	10.1016/j.fuel.2022.127112
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0306 Physical Chemistry (incl. Structural), 0904 Chemical Engineering, 0913 Mechanical Engineering
dc.subject.classification	Energy
dc.title	Potential of kerosene-diesel blends as alternative fuels for diesel engines: Perspectives from spray combustion characteristics
dc.type	Journal Article
utslib.citation.volume	335
utslib.for	0306 Physical Chemistry (incl. Structural)
utslib.for	0904 Chemical Engineering
utslib.for	0913 Mechanical Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2025-03-01T00:00:00+1000Z
dc.date.updated	2023-01-31T22:57:37Z
pubs.publication-status	Accepted
pubs.volume	335

Abstract:

To explore the application potential of kerosene (RP-3)/diesel blends as alternative fuels for diesel engines, the spray combustion characteristics of neat diesel, neat RP-3 and RP-3/diesel blends (varied from 25 % to 75 % of RP-3) were systematically compared in an optical constant volume combustion chamber under non-evaporating (0 % O2, 293 K), evaporating (0 % O2, 900 K) and combustion (21 % O2, 900 K) conditions. Their spray, evaporation, combustion and soot emission characteristics were visualized using various high-speed imaging techniques. The results show that RP-3/diesel blending ratio has significant effects on the spray and combustion processes. Under non-evaporating condition, higher RP-3 contents slightly decrease the spray penetration but increase the corresponding spray angle and volume. Under evaporating condition, the spray angle and volume follow the similar trend as those under non-evaporating condition except for slight fluctuations, but the liquid length decreases with the increase of blending ratio. Unexpectedly, the vapor penetrations of neat diesel and RP-3 are similar and longer than those of their blends. Under combustion condition, both the ignition delay and flame lift-off length increase with the RP-3 blending ratio. In addition, RP-3 component reduced the peak soot mass by 9.78 %, 14.7 % and 17.56 % for R25, R50 and R75, respectively. In summary, this study suggests that RP-3/diesel blends are suitable alternative fuels for diesel engines, in terms of faster evaporation and lower soot emissions. We recommend a blending ratio of 25 % as the most promising fuel for further investigations in real engines.

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http://hdl.handle.net/10453/165704