Analysis of the performance and emissions characteristics of prechamber diesel engines via a two-zone model in both chambers

Kouremenos, DA; Rakopoulos, CD; Hountalas, D

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Hountalas, D	en
dc.date.accessioned	2014-03-01T02:47:54Z
dc.date.available	2014-03-01T02:47:54Z
dc.date.issued	1990	en
dc.identifier.issn	87568470	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33430
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0025629371&partnerID=40&md5=b4e14aab124bada9fdf139de89d193a4	en
dc.subject.other	Flow of Fluids--Turbulent	en
dc.subject.other	Internal Combustion Engines--Performance	en
dc.subject.other	Nitrogen Oxides--Control	en
dc.subject.other	Soot--Control	en
dc.subject.other	Chemical Species Formation	en
dc.subject.other	Diesel Engine Two Zone Model	en
dc.subject.other	Fuel Injection Model	en
dc.subject.other	Prechamber Diesel Engine Emissions	en
dc.subject.other	Temperature-Crank Angle Diagrams	en
dc.subject.other	Diesel Engines	en
dc.title	Analysis of the performance and emissions characteristics of prechamber diesel engines via a two-zone model in both chambers	en
heal.type	conferenceItem	en
heal.publicationDate	1990	en
heal.abstract	This work presents an advanced cycle analysis of a naturally aspirated, four stroke, diesel engine with a swirl prechamber. For calculating the heat exchange between gas and walls in both main chamber and pre-chamber, the revelant characteristic velocities and lengths are calculated by setting-up a zero dimensional energy cascade turbulence model. Combustion in both the main chamber and the swirl prechamber is attacked by proposing a two-zone combustion mode, following the movement of the spray plume inside an air solid body rotation environment in the prechamber and its later progression into the main chamber. The concentration of the constituents in the exhaust gases is calculated by adopting a complete chemical equilibrium scheme for the C-H-O system of the eleven species considered, together with chemical rate equations for the calculation of nitric oxide (NO). A model for the evaluation of soot formation and oxidation rates is incorported, in order to compute the net soot concentration in the exhaust. To validate the analysis, an extensive experimental investigation is undertaken at the laboratory of the authors on a flexible Ricardo, single cylinder, swirl chamber diesel engine, measuring its performance (load, specific fuel consumption, maximum pressures, etc) and emissions characteristics (NO, C) in a wide range of operating conditions. The experimental results are compared with the theoretical results obtained from the computer program implementing the analysis and the agreement of this comparison is found very satisfactory.	en
heal.publisher	Publ by SAE, Warrendale, PA, United States	en
heal.journalName	Proceedings - Society of Automotive Engineers	en
dc.identifier.spage	141	en
dc.identifier.epage	149	en