Investigating the importance of mass transfer on the formation of HCCI engine emissions using a multi-zone model

Komninos, NP

dc.contributor.author	Komninos, NP	en
dc.date.accessioned	2014-03-01T01:30:57Z
dc.date.available	2014-03-01T01:30:57Z
dc.date.issued	2009	en
dc.identifier.issn	0306-2619	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19688
dc.subject	HCCI	en
dc.subject	Multi-zone model	en
dc.subject	Mass transfer	en
dc.subject	Emissions formation	en
dc.subject	Hydrocarbons	en
dc.subject	CO	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	COMBUSTION	en
dc.title	Investigating the importance of mass transfer on the formation of HCCI engine emissions using a multi-zone model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apenergy.2008.09.022	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apenergy.2008.09.022	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The focus of the present study is to investigate the importance of mass transfer on the formation of the most important HCCI engine emissions, i.e. unburned HC and CO emissions. A multi-zone model is used for this purpose. The multi-zone model includes sub-models for the heat transfer between zones and to the cylinder wall and for the mass transfer between the hotter and colder regions of the combustion chamber. The combustion mechanism is modeled using a reduced set of chemical reactions coupled with a chemical kinetics solver. The results indicate that mass transfer during combustion and expansion plays a significant role on the formation of both the unburned HC and the CO emissions and therefore must be taken into account for the closed part of the engine cycle, i.e. compression, combustion and expansion. According to the model results, the formation of these emissions is located mainly at the crevice and the near-the-wall regions and is determined by the temperature field and mass transfer. It is shown that neglecting mass transfer in these regions during combustion and expansion would result to a significant deviation from the values predicted with the inclusion of mass transfer. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	APPLIED ENERGY	en
dc.identifier.doi	10.1016/j.apenergy.2008.09.022	en
dc.identifier.isi	ISI:000265033400041	en
dc.identifier.volume	86	en
dc.identifier.issue	7-8	en
dc.identifier.spage	1335	en
dc.identifier.epage	1343	en