Irreversibility production during transient operation of a turbocharged diesel engine

Giakoumis, EG; Andritsakis, EC

dc.contributor.author	Giakoumis, EG	en
dc.contributor.author	Andritsakis, EC	en
dc.date.accessioned	2014-03-01T01:26:32Z
dc.date.available	2014-03-01T01:26:32Z
dc.date.issued	2007	en
dc.identifier.issn	0143-3369	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18116
dc.subject	Availability	en
dc.subject	Exergy	en
dc.subject	Irreversibilites	en
dc.subject	Second-law	en
dc.subject	Transient operation	en
dc.subject	Turbocharged diesel engine	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Transportation Science & Technology	en
dc.subject.other	Irreversibilities	en
dc.subject.other	Mechanical friction	en
dc.subject.other	Transient operation	en
dc.subject.other	Computer simulation	en
dc.subject.other	Data acquisition	en
dc.subject.other	Friction	en
dc.subject.other	Fuel pumps	en
dc.subject.other	Transient analysis	en
dc.subject.other	Turbogenerators	en
dc.subject.other	Diesel engines	en
dc.title	Irreversibility production during transient operation of a turbocharged diesel engine	en
heal.type	journalArticle	en
heal.identifier.primary	10.1504/IJVD.2007.013674	en
heal.identifier.secondary	http://dx.doi.org/10.1504/IJVD.2007.013674	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	A computer moderhas been developed for studying the first- and second-law balances of a turbocharged diesel engine under transient conditions. Special attention is paid to the identification and quantification of the irreversibilities of all processes and devices after a ramp increase in load. The model includes a detailed analysis of mechanical friction, a separate consideration for the processes in each cylinder during a cycle ('multi-cylinder' model) and a mathematical simulation of the fuel pump. Experimental data taken from a turbocharged diesel engine are used for the evaluation of the model's predictive capabilities. The contribution of combustion, manifolds, aftercooler and turbocharger irreversibility production is analysed using detailed diagrams. It is revealed that transient in-cylinder irreversibilities develop in a different manner compared to the respective steady-state. Combustion has always a dominant contribution but the exhaust manifold irreversibilities cannot be ignored, whereas those attributed to the inlet manifold, turbocharger and aftercooler are always of lesser importance. Copyright © 2007 Inderscience Enterprises Ltd.	en
heal.publisher	INDERSCIENCE ENTERPRISES LTD	en
heal.journalName	International Journal of Vehicle Design	en
dc.identifier.doi	10.1504/IJVD.2007.013674	en
dc.identifier.isi	ISI:000247816100008	en
dc.identifier.volume	45	en
dc.identifier.issue	1-2	en
dc.identifier.spage	128	en
dc.identifier.epage	149	en