Understanding the relationship between ignition delay and burn duration in a constant volume vessel at diesel engine conditions

Hdl Handle:
http://hdl.handle.net/10034/601053
Title:
Understanding the relationship between ignition delay and burn duration in a constant volume vessel at diesel engine conditions
Authors:
Davies, Trevor J.
Abstract:
Experiments were performed in a constant volume vessel, with fuel sprays injected into the vessel at various different pressure and temperature conditions chosen to represent diesel engine operation at various loads. A range of diesel primary reference fuels (i.e. mixtures of cetane and heptamethylnonane) of varying cetane number (CN) were tested, and as expected lower CN fuels have longer ignition delays. Burn period was plotted against ignition delay and two distinct trends can be seen: “mainly diffusion” diesel combustion in which burn period decreases with ignition delay and “mainly pre-mixed” diesel combustion in which burn period increases with ignition delay. There is typically a minimum in plots of burn period versus ignition delay which represents the transition between the two types of combustion mode. Higher CN, higher engine load and higher boost pressure would seem to favour “mainly diffusion” combustion whilst lower CN, lower loads and non boosted conditions favour “mainly pre-mixed” combustion.
Affiliation:
University of Chester
Citation:
Rabl, S., Davies, T. J., McDougall, A. P., & Cracknell, R. F. (2015). Understanding the relationship between ignition delay and burn duration in a constant volume vessel at diesel engine conditions. Proceedings of the Combustion Institute, 35(3), 2967-2974. doi: http://dx.doi.org/10.1016/j.proci.2014.05.054
Publisher:
Elsevier
Journal:
Proceedings of the Combustion Institute
Publication Date:
19-Jun-2014
URI:
http://hdl.handle.net/10034/601053
DOI:
doi:10.1016/j.proci.2014.05.054
Additional Links:
http://www.sciencedirect.com/science/article/pii/S1540748914000571
Type:
Article
Language:
en
ISSN:
1540-7489
Appears in Collections:
Natural Sciences

Full metadata record

DC FieldValue Language
dc.contributor.authorDavies, Trevor J.en
dc.date.accessioned2016-03-09T18:26:25Zen
dc.date.available2016-03-09T18:26:25Zen
dc.date.issued2014-06-19en
dc.identifier.citationRabl, S., Davies, T. J., McDougall, A. P., & Cracknell, R. F. (2015). Understanding the relationship between ignition delay and burn duration in a constant volume vessel at diesel engine conditions. Proceedings of the Combustion Institute, 35(3), 2967-2974. doi: http://dx.doi.org/10.1016/j.proci.2014.05.054en
dc.identifier.issn1540-7489en
dc.identifier.doidoi:10.1016/j.proci.2014.05.054en
dc.identifier.urihttp://hdl.handle.net/10034/601053en
dc.description.abstractExperiments were performed in a constant volume vessel, with fuel sprays injected into the vessel at various different pressure and temperature conditions chosen to represent diesel engine operation at various loads. A range of diesel primary reference fuels (i.e. mixtures of cetane and heptamethylnonane) of varying cetane number (CN) were tested, and as expected lower CN fuels have longer ignition delays. Burn period was plotted against ignition delay and two distinct trends can be seen: “mainly diffusion” diesel combustion in which burn period decreases with ignition delay and “mainly pre-mixed” diesel combustion in which burn period increases with ignition delay. There is typically a minimum in plots of burn period versus ignition delay which represents the transition between the two types of combustion mode. Higher CN, higher engine load and higher boost pressure would seem to favour “mainly diffusion” combustion whilst lower CN, lower loads and non boosted conditions favour “mainly pre-mixed” combustion.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S1540748914000571en
dc.subjectDieselen
dc.subjectSprayen
dc.subjectCetane numberen
dc.subjectIgnition delayen
dc.subjectBurn durationen
dc.titleUnderstanding the relationship between ignition delay and burn duration in a constant volume vessel at diesel engine conditionsen
dc.typeArticleen
dc.contributor.departmentUniversity of Chesteren
dc.identifier.journalProceedings of the Combustion Instituteen
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