Effect of prechamber and main chamber thermal insulation on the emitted nitric oxide and smoke of a swirl-chamber diesel engine

Kouremenos, DA; Rakopoulos, CD; Hountalas, DT; Yfantis, EA

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Hountalas, DT	en
dc.contributor.author	Yfantis, EA	en
dc.date.accessioned	2014-03-01T02:48:07Z
dc.date.available	2014-03-01T02:48:07Z
dc.date.issued	1992	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33544
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0026995471&partnerID=40&md5=f9dd5bde1f25bca1152327ac9cc0b5dc	en
dc.subject.other	Combustion chambers	en
dc.subject.other	Exhaust gases	en
dc.subject.other	Mathematical models	en
dc.subject.other	Nitrogen oxides	en
dc.subject.other	Particulate emissions	en
dc.subject.other	Soot	en
dc.subject.other	Temperature	en
dc.subject.other	Thermal insulation	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Walls (structural partitions)	en
dc.subject.other	Main chambers	en
dc.subject.other	Nitrogen oxide emission levels	en
dc.subject.other	Prechambers	en
dc.subject.other	Swirl chamber diesel engines	en
dc.subject.other	Diesel engines	en
dc.title	Effect of prechamber and main chamber thermal insulation on the emitted nitric oxide and smoke of a swirl-chamber diesel engine	en
heal.type	conferenceItem	en
heal.publicationDate	1992	en
heal.abstract	A thermodynamic simulation of a swirl prechamber diesel engine cycle is presented, in this study, which is used to examine the effect of insulating the main chamber and the prechamber, on the exhaust nitric oxide and soot emission levels of a naturally aspirated, IDI (Indirect Injection) diesel engine. The separate insulation of the combustion chambers is examined, by considering the corresponding rising of the walls temperature. Special attention is given to the correct modelling of the net nitric oxide and soot formation rates. The high temperatures existing in both chambers, when insulation is applied, affect greatly the nitric oxide emission levels by causing a considerable increase. Soot is increased seriously when the main chamber is insulated, since then the high wall temperatures cause the volumetric efficiency to decrease, a situation which favours soot formation due to air-fuel ratio decrease. The results of this study offer an insight of the engine thermal insulation effects on the emitted pollutants levels, complementing the corresponding effects of combustion chambers insulation on such an engine's performance.	en
heal.publisher	Publ by ASME, New York, NY, United States	en
heal.journalName	ECOS '92 International Symposium	en
dc.identifier.spage	665	en
dc.identifier.epage	673	en