Theoretical investigation of the factors affecting the performance of a high speed DI diesel engine fuelled with natural gas

Papagiannakis, RG; Yfantis, EA; Hountalas, DT; Zannis, TC

dc.contributor.author	Papagiannakis, RG	en
dc.contributor.author	Yfantis, EA	en
dc.contributor.author	Hountalas, DT	en
dc.contributor.author	Zannis, TC	en
dc.date.accessioned	2014-03-01T02:52:13Z
dc.date.available	2014-03-01T02:52:13Z
dc.date.issued	2009	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35868
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-70149116320&partnerID=40&md5=3340b229843ac6016c49982ff36eabdf	en
dc.subject.other	Autoignition temperature	en
dc.subject.other	Automotive engineers	en
dc.subject.other	Combustion model	en
dc.subject.other	Comparative assessment	en
dc.subject.other	DI diesel engine	en
dc.subject.other	Diesel oil	en
dc.subject.other	Dual-fuels	en
dc.subject.other	Engine efficiency	en
dc.subject.other	Engine operations	en
dc.subject.other	Engine parameter	en
dc.subject.other	Engine performance	en
dc.subject.other	Engine simulation models	en
dc.subject.other	Engine speed	en
dc.subject.other	Exhaust emission	en
dc.subject.other	Experimental studies	en
dc.subject.other	Gaseous Fuel	en
dc.subject.other	HC emissions	en
dc.subject.other	High-speed	en
dc.subject.other	Low costs	en
dc.subject.other	Operational parameters	en
dc.subject.other	Optimum combination	en
dc.subject.other	Paniculate matters	en
dc.subject.other	Pilot fuel quantity	en
dc.subject.other	Pollutant emission	en
dc.subject.other	Relative impact	en
dc.subject.other	Research studies	en
dc.subject.other	Simultaneous reduction	en
dc.subject.other	Soot emissions	en
dc.subject.other	Theoretical investigations	en
dc.subject.other	Alternative fuels	en
dc.subject.other	Brakes	en
dc.subject.other	Calorific value	en
dc.subject.other	Carbon monoxide	en
dc.subject.other	Combustion knock	en
dc.subject.other	Deterioration	en
dc.subject.other	Diesel engines	en
dc.subject.other	Diesel fuels	en
dc.subject.other	Environmental regulations	en
dc.subject.other	Gas emissions	en
dc.subject.other	Gas industry	en
dc.subject.other	Ignition	en
dc.subject.other	Leakage (fluid)	en
dc.subject.other	Machine design	en
dc.subject.other	Mechanical engineering	en
dc.subject.other	Natural gas	en
dc.subject.other	Dual fuel engines	en
dc.title	Theoretical investigation of the factors affecting the performance of a high speed DI diesel engine fuelled with natural gas	en
heal.type	conferenceItem	en
heal.publicationDate	2009	en
heal.abstract	Reduction of exhaust emissions is a major research task in diesel engine development in view of increasing concern regarding environmental protection and stringent exhaust gas regulations. Simultaneous reduction of NOX emissions and paniculate matter is quite difficult due to the soot/NO x trade-off and is often accompanied by fuel consumption penalties. Towards this aim, automotive engineers have proposed various solutions, one of which is the use of alternative gaseous fuels as a supplement for the commercial liquid diesel fuel. This type of engine, which operates fuelled simultaneously with conventional diesel oil and gaseous fuel, is called ""dual fuel"" diesel engine. Among alternative gaseous fuels, natural gas is considered to be quite promising due to its low cost and its higher auto-ignition temperature compared to other gaseous fuels facilitating thus its use on existing diesel engines. Previous research studies revealed that natural gas/diesel engine operation results in deterioration of brake engine efficiency, CO and HC emissions compared to conventional diesel fuel operation. In attempt to curtail these negative effects, various theoretical and experimental studies were carried out examining the influence of various parameters such as pilot fuel quantity, diesel fuel injection timing advance and intake charge conditions on ""dual fuel"" engine performance characteristics and pollutant emissions. However, there are more to know about the proper combination of these engine parameters to attain the optimum results regarding reduction of CO and HC emissions without further deteriorating, if not improving, brake engine efficiency. Hence, in the present study, a theoretical investigation is conducted using an engine simulation model to examine the effect of the aforementioned parameters on performance and exhaust emissions of a natural gas/diesel engine. Predictions are produced for a high-speed natural gas/diesel engine performance characteristics and NO. CO and Soot emissions at diverse engine speeds and loads using a comprehensive two-zone combustion model. The main objective of this comparative assessment is to elaborate the relative impact of each one of the above mentioned parameters on engine performance characteristics and exhaust emissions. Furthermore, an endeavor is made to determine the optimum combinations of these engine operational parameters. The conclusions of this study may be proven to be considerably valuable for the application of this technologv on existing DI diesel engines. Copyright © 2008 by ASME.	en
heal.journalName	ASME International Mechanical Engineering Congress and Exposition, Proceedings	en
dc.identifier.volume	3	en
dc.identifier.spage	505	en
dc.identifier.epage	514	en