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

D. A. Kouremenos, C. D. Rakopoulos, D. T. Hountalas, E. A. Yfantis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationECOS '92 International Symposium
EditorsAntonio Valero, George Tsatsaronis
PublisherPubl by ASME
Pages665-673
Number of pages9
ISBN (Print)0791806316
Publication statusPublished - 1992
Externally publishedYes
EventECOS '92 International Symposium on Efficiency, Cost, Optimization and Simulation - Zaragoza, Spain
Duration: 15 Jun 199218 Jun 1992

Publication series

NameECOS '92 International Symposium

Conference

ConferenceECOS '92 International Symposium on Efficiency, Cost, Optimization and Simulation
CityZaragoza, Spain
Period15/06/9218/06/92

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