Experimental instantaneous heat fluxes in the cylinder head and exhaust manifold of an air-cooled diesel engine

Rakopoulos, CD; Mavropoulos, GC

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Mavropoulos, GC	en
dc.date.accessioned	2014-03-01T01:15:37Z
dc.date.available	2014-03-01T01:15:37Z
dc.date.issued	2000	en
dc.identifier.issn	0196-8904	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13623
dc.subject	instantaneous heat fluxes	en
dc.subject	diesel engine	en
dc.subject	aircooled	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Mechanics	en
dc.subject.classification	Physics, Nuclear	en
dc.subject.other	CHAMBER INSULATION	en
dc.subject.other	COMBUSTION	en
dc.subject.other	PERFORMANCE	en
dc.subject.other	TEMPERATURE	en
dc.subject.other	COMPONENTS	en
dc.subject.other	MODEL	en
dc.subject.other	FLOW	en
dc.title	Experimental instantaneous heat fluxes in the cylinder head and exhaust manifold of an air-cooled diesel engine	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0196-8904(99)00179-X	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0196-8904(99)00179-X	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	An experimental analysis is performed to study the instantaneous heat fluxes, during the engine cycle, in the combustion chamber walls of a direct injection (DI), air cooled, four stroke, Diesel engine located at the authors laboratory. For this purpose, a novel experimental installation has been developed, which separates the engine transient temperature signals into two parts, namely the 'long' and the 'short' term response ones, followed by their discrete processing in two independent data acquisition systems. Furthermore, a new pre-amplification unit for fast response thermocouples, appropriate heat flux sensors and an innovative, object oriented, control code for fast data acquisition have been designed and developed for the needs of the study. One dimensional heat conduction with Fourier analysis of the raw temperature data are implemented in order to calculate the instantaneous engine cylinder and exhaust pipe heat fluxes. Analysis of the experimental results reveal many interesting aspects of transient engine heat transfer. The effect of engine speed on cylinder head and exhaust manifold heat losses is presented. The simultaneous presentation of heat fluxes on the cylinder head and exhaust manifold, together with the engine indicator diagram, sheds light into the mechanisms governing the transient heat transfer. This is very important, since especially for air cooled Diesel engines, limited information seems to exist in the relevant literature. (C) 2000 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	ENERGY CONVERSION AND MANAGEMENT	en
dc.identifier.doi	10.1016/S0196-8904(99)00179-X	en
dc.identifier.isi	ISI:000086807000004	en
dc.identifier.volume	41	en
dc.identifier.issue	12	en
dc.identifier.spage	1265	en
dc.identifier.epage	1281	en