The influence of cylinder wall temperature profile on the second-law diesel engine transient response

Rakopoulos, CD; Giakoumis, EG

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Giakoumis, EG	en
dc.date.accessioned	2014-03-01T01:23:11Z
dc.date.available	2014-03-01T01:23:11Z
dc.date.issued	2005	en
dc.identifier.issn	1359-4311	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16860
dc.subject	Low heat rejection	en
dc.subject	Second-Law	en
dc.subject	Transient operation	en
dc.subject	Turbocharged diesel	en
dc.subject	Wall temperature	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Compressors	en
dc.subject.other	Computer simulation	en
dc.subject.other	Exhaust gases	en
dc.subject.other	Friction	en
dc.subject.other	Internal combustion engines	en
dc.subject.other	Thermal effects	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Low heat rejection	en
dc.subject.other	Second-law	en
dc.subject.other	Transient operation	en
dc.subject.other	Turbocharged diesel	en
dc.subject.other	Wall temperature	en
dc.subject.other	Diesel engines	en
dc.title	The influence of cylinder wall temperature profile on the second-law diesel engine transient response	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.applthermaleng.2004.10.010	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.applthermaleng.2004.10.010	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	A developed software is used to study the effect of the cylinder wall temperature profile on the second-law transient performance of a turbocharged diesel engine. The simulation, based on the filling and emptying approach, includes analysis of mechanical friction per degree crank angle, mathematical simulation of the fuel pump, while each equation in the model is solved separately for every cylinder of the six-cylinder diesel engine under study. The model is validated against experimental data for various load changes. A second-law analysis is performed for every process of the diesel engine covering its transient operation. The effect of the cylinder wall temperature profile on the second-law transient response of the engine is depicted in detailed, multiple diagrams. Special reference is made to the interesting low heat rejection (""adiabatic"") case. It is shown from the analysis that after a ramp increase in load the second-law terms including the various irreversibilities ones, unlike their first law counterparts, are heavily impacted by the cylinder wall temperature variation, thus providing an increased potential for extra work recovery. This fact best highlights the results of the second-law analysis and its diversification as compared to the first-law theory. © 2004 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Applied Thermal Engineering	en
dc.identifier.doi	10.1016/j.applthermaleng.2004.10.010	en
dc.identifier.isi	ISI:000229277400016	en
dc.identifier.volume	25	en
dc.identifier.issue	11-12	en
dc.identifier.spage	1779	en
dc.identifier.epage	1795	en