Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions

Papagiannakis, RG; Rakopoulos, CD; Hountalas, DT; Rakopoulos, DC

dc.contributor.author	Papagiannakis, RG	en
dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Hountalas, DT	en
dc.contributor.author	Rakopoulos, DC	en
dc.date.accessioned	2014-03-01T01:33:22Z
dc.date.available	2014-03-01T01:33:22Z
dc.date.issued	2010	en
dc.identifier.issn	0016-2361	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20394
dc.subject	Compression ignition engine	en
dc.subject	Dual fuel	en
dc.subject	Natural gas	en
dc.subject	Diesel fuel	en
dc.subject	Emissions	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	DIESEL-ENGINE	en
dc.subject.other	COMBUSTION PROCESSES	en
dc.subject.other	2ND-LAW ANALYSIS	en
dc.subject.other	GAS ENGINES	en
dc.subject.other	PERFORMANCE	en
dc.subject.other	QUANTITY	en
dc.title	Emission characteristics of high speed, dual fuel, compression ignition engine operating in a wide range of natural gas/diesel fuel proportions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.fuel.2009.11.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.fuel.2009.11.001	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	In the effort to reduce pollutant emissions from diesel engines various solutions have been proposed, one of which is the use of natural gas as supplement to liquid diesel fuel, with these engines referred to as fumigated, dual fuel, compression ignition engines. One of the main purposes of using natural gas in dual fuel (liquid and gaseous one) combustion systems is to reduce particulate emissions and nitrogen oxides. Natural gas is a clean burning fuel; it possesses a relatively high auto-ignition temperature, which is a serious advantage over other gaseous fuels since then the compression ratio of most conventional direct injection (DI) diesel engines can be maintained high. In the present work, an experimental investigation has been conducted to examine the effects of the total air-fuel ratio on the efficiency and pollutant emissions of a high speed, compression ignition engine located at the authors' laboratory, where liquid diesel fuel is partially substituted by natural gas in various proportions, with the natural gas fumigated into the intake air. The experimental results disclose the effect of these parameters on brake thermal efficiency, exhaust gas temperature, nitric oxide, carbon monoxide, unburned hydrocarbons and soot emissions, with the beneficial effect of the presence of natural gas being revealed. Given that the experimental measurements cover a wide range of liquid diesel supplementary ratios without any appearance of knocking phenomena, the belief is strengthened that the findings of the present work can be very valuable if opted to apply this technology on existing DI diesel engines. (C) 2009 Elsevier Ltd. All rights reserved.	en
heal.publisher	ELSEVIER SCI LTD	en
heal.journalName	FUEL	en
dc.identifier.doi	10.1016/j.fuel.2009.11.001	en
dc.identifier.isi	ISI:000277189100013	en
dc.identifier.volume	89	en
dc.identifier.issue	7	en
dc.identifier.spage	1397	en
dc.identifier.epage	1406	en