The combustion of n-butanol/diesel fuel blends and its cyclic variability in a direct injection diesel engine

Rakopoulos, CD; Rakopoulos, DC; Giakoumis, EG; Kyritsis, DC

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Rakopoulos, DC	en
dc.contributor.author	Giakoumis, EG	en
dc.contributor.author	Kyritsis, DC	en
dc.date.accessioned	2014-03-01T02:47:29Z
dc.date.available	2014-03-01T02:47:29Z
dc.date.issued	2011	en
dc.identifier.issn	0957-6509	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33174
dc.subject	Combustion	en
dc.subject	Cyclic (combustion) variability	en
dc.subject	Diesel engine	en
dc.subject	Heat release	en
dc.subject	n-butanol blends	en
dc.subject	Stochastic analysis	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Combustion mechanism	en
dc.subject.other	Cross-correlation coefficient	en
dc.subject.other	Cyclic (combustion) variability	en
dc.subject.other	Cyclic variabilities	en
dc.subject.other	Cylinder pressures	en
dc.subject.other	Direct injection diesel engines	en
dc.subject.other	Experimental studies	en
dc.subject.other	Fuel blends	en
dc.subject.other	Heat release	en
dc.subject.other	Heat release analysis	en
dc.subject.other	Heat release rates	en
dc.subject.other	High-speed	en
dc.subject.other	Ignition delays	en
dc.subject.other	Injection pressures	en
dc.subject.other	Injection timing	en
dc.subject.other	Maximum pressure	en
dc.subject.other	N-butanol	en
dc.subject.other	n-butanol blends	en
dc.subject.other	Performance based	en
dc.subject.other	Physical and chemical properties	en
dc.subject.other	Power-spectra	en
dc.subject.other	Pressure indicator	en
dc.subject.other	Processing systems	en
dc.subject.other	Standard deviation	en
dc.subject.other	Stochastic analysis	en
dc.subject.other	Alcohols	en
dc.subject.other	Chemical properties	en
dc.subject.other	Combustion chambers	en
dc.subject.other	Diesel engines	en
dc.subject.other	Diesel fuels	en
dc.subject.other	Fuels	en
dc.subject.other	Ignition	en
dc.subject.other	Probability density function	en
dc.subject.other	Stochastic systems	en
dc.subject.other	Direct injection	en
dc.title	The combustion of n-butanol/diesel fuel blends and its cyclic variability in a direct injection diesel engine	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1177/2041296710394256	en
heal.identifier.secondary	http://dx.doi.org/10.1177/2041296710394256	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	An experimental study is conducted to evaluate the effects of using blends of diesel fuel with n-butanol (normal butanol) up to 24 per cent (by volume), which is a promising fuel that can be produced from biomass (bio-butanol), on the combustion behaviour of a standard, high-speed, direct injection (DI), 'Hydra' diesel engine located at the authors' laboratory. Combustion chamber and fuel injection pressure diagrams are obtained at four different loads using a developed, high-speed, data acquisition, and processing system. A heat release analysis of the experimentally obtained cylinder pressure diagrams is developed and used. Plots of histories in the combustion chamber of the gross heat release rate and other related parameters reveal some interesting features, which shed light on the combustion mechanism when using these blends. These results, combined with the differing physical and chemical properties of the n-butanol against those for the diesel fuel, aid the correct interpretation of the observed engine behaviour performance based on and emissions. Moreover, given the concern for the rather low cetane number of the n-butanol that may promote cyclic (combustion) variability, its strength is also examined as reflected in the pressure indicator diagrams, by analysing for the maximum pressure and its rate, dynamic injection timing and ignition delay, by using stochastic analysis for averages, standard deviations, probability density functions, autocorrelation, power spectra, and cross-correlation coefficients.	en
heal.publisher	PROFESSIONAL ENGINEERING PUBLISHING LTD	en
heal.journalName	Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy	en
dc.identifier.doi	10.1177/2041296710394256	en
dc.identifier.isi	ISI:000291585000008	en
dc.identifier.volume	225	en
dc.identifier.issue	3	en
dc.identifier.spage	289	en
dc.identifier.epage	308	en