Improvement and validation of a multi-zone model for HCCI engine combustion concerning performance and emissions

Komninos, NP; Hountalas, DT

dc.contributor.author	Komninos, NP	en
dc.contributor.author	Hountalas, DT	en
dc.date.accessioned	2014-03-01T01:28:40Z
dc.date.available	2014-03-01T01:28:40Z
dc.date.issued	2008	en
dc.identifier.issn	0196-8904	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18904
dc.subject	Homogeneous Charge Compression Ignition (HCCI)	en
dc.subject	multi-zone model	en
dc.subject	validation	en
dc.subject	emissions formation	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Nuclear	en
dc.title	Improvement and validation of a multi-zone model for HCCI engine combustion concerning performance and emissions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.enconman.2008.05.008	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.enconman.2008.05.008	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The main objective of the present work is to improve and validate a multi-zone model developed by the authors for HCCI combustion. The multi-zone model describes the heat and mass transfer mechanisms and simulates combustion and pollutant formation using a reduced chemistry reaction mechanism and chemical kinetics. The division of the combustion chamber into zones is based on geometrical considerations. Heat and mass is exchanged between zones and the cylinder wall according to their spatial configuration, throughout the compression and expansion strokes, i.e. for the closed part of engine operation. The model is improved by modelling crevice flow through the description of the motion of unburned and burned mixture in and out of the crevice regions. These regions are a significant source of unburned hydrocarbons and contribute to the formation of CO. Using the model, a description of the formation of pollutant emissions in the zones is described. For model validation, cylinder pressure, performance data and emissions obtained from the simulation are compared to experimental data taken from an engine operating on HCCI mode for three different load cases. (C) 2008 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	ENERGY CONVERSION AND MANAGEMENT	en
dc.identifier.doi	10.1016/j.enconman.2008.05.008	en
dc.identifier.isi	ISI:000259432900005	en
dc.identifier.volume	49	en
dc.identifier.issue	10	en
dc.identifier.spage	2530	en
dc.identifier.epage	2537	en