Experimental investigation to develop a methodology for estimating the compression condition of DI Diesel engines

Hountalas, DT; Mavropoulos, GC; Kourbetis, G

dc.contributor.author	Hountalas, DT	en
dc.contributor.author	Mavropoulos, GC	en
dc.contributor.author	Kourbetis, G	en
dc.date.accessioned	2014-03-01T01:24:24Z
dc.date.available	2014-03-01T01:24:24Z
dc.date.issued	2006	en
dc.identifier.issn	0196-8904	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17240
dc.subject	Compression variables	en
dc.subject	Diesel engine	en
dc.subject	Experimental investigation	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	Costs	en
dc.subject.other	Data reduction	en
dc.subject.other	Extrapolation	en
dc.subject.other	Heat losses	en
dc.subject.other	Maintenance	en
dc.subject.other	Marine applications	en
dc.subject.other	Compression pressure	en
dc.subject.other	Compression stroke	en
dc.subject.other	Compression variables	en
dc.subject.other	Experimental investigation	en
dc.subject.other	Diesel engines	en
dc.title	Experimental investigation to develop a methodology for estimating the compression condition of DI Diesel engines	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.enconman.2005.04.001	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.enconman.2005.04.001	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	An experimental investigation is conducted to examine the effect of the main parameters influencing the compression stroke of a direct injection Diesel engine. The aim is to develop a methodology that can be used as a diagnostic tool to determine the compression condition of DI Diesel engines. However, conclusions derived from the present investigation can be extrapolated to other types of reciprocating internal combustion engines. The compression stroke itself is an important index concerning engine operation since engine conditions at the end of the compression stroke have a major effect on its overall performance. Such information is especially important for large scale Diesel engines used for stationary or marine applications. In these engines, it is important to develop non-catastrophic methods for estimating the cylinder compression condition without dismantling the engine cylinder. The outcome could be a serious reduction of maintenance costs, since unnecessary labour required for inspection could be avoided. When using measurement techniques, what is usually available is the cylinder pressure trace during the compression stroke. However, it is widely recognized that the compression stroke and peak compression pressure is strongly affected, beyond heat losses, by the initial pressure at the inlet valve closure, the compression ratio and the blowby rate. The last three parameters can vary significantly during engine operation, while the heat losses vary mainly due to engine operating conditions and their effect on the compression stroke can be considered. Thus, the knowledge of the peak compression pressure resulting from the cylinder compression pressure diagram is not adequate to define the cylinder compression condition. For this reason, an experimental investigation is conducted to examine the effect of the inital presssure at the inlet valve closure, the compression ratio and the blowby on the cylinder pressure trace. From analysis of the measured data, it is revealed that each parameter has a different effect on the different parts of the compression pressure trace. As revealed, it is possible to determine the compression condition of an engine cylinder based on the measured cylinder pressure trace. (c) 2005 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Energy Conversion and Management	en
dc.identifier.doi	10.1016/j.enconman.2005.04.001	en
dc.identifier.isi	ISI:000232410900001	en
dc.identifier.volume	47	en
dc.identifier.issue	1	en
dc.identifier.spage	1	en
dc.identifier.epage	18	en