Experimental and simulation analysis of the transient operation of a turbocharged multi-cylinder IDI diesel engine

Rakopoulos, CD; Giakoumis, EG; Hountalas, DT

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Giakoumis, EG	en
dc.contributor.author	Hountalas, DT	en
dc.date.accessioned	2014-03-01T01:13:45Z
dc.date.available	2014-03-01T01:13:45Z
dc.date.issued	1998	en
dc.identifier.issn	0363-907X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12699
dc.subject	Experiments	en
dc.subject	Simulation	en
dc.subject	Transient operation	en
dc.subject	Turbocharged diesel engine	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Nuclear Science & Technology	en
dc.subject.other	COMBUSTION	en
dc.subject.other	FLOW	en
dc.title	Experimental and simulation analysis of the transient operation of a turbocharged multi-cylinder IDI diesel engine	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1099-114X(19980325)22:4<317::AID-ER368>3.0.CO;2-5	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1099-114X(19980325)22:4<317::AID-ER368>3.0.CO;2-5	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	An experimental and theoretical analysis is carried out to study the response of a multi-cylinder, turbocharged, IDI (indirect injection) compression ignition engine, under transient operating conditions. To this aim, a comprehensive digital computer model is developed which solves the governing differential equations individually for each cylinder, providing thus increased accuracy over previous 'single-cylinder' simulations. Special attention has been paid for diversifying the transient operation from the steady-state one, providing improved or even new relations concerning combustion, heat transfer to the cylinder walls, friction, turbocharger and aftercooler operation, and dynamic analysis for the transient case. An extended steady state and transient experimental work is conducted on a specially developed engine test bed configuration, located at the authors' laboratory, which is connected to a high-speed data acquisition and processing system. The steady-state measurements are used for the calibration of the individual submodel constants. The transient investigation includes both speed and load changes operating schedules. During each transient test four major measurements are continuously made, i.e. engine speed, fuel pump rack position, main chamber pressure and turbocharger compressor boost pressure. The hydraulic brake coupled to the engine possesses a high mass moment of inertia and long nonlinear load-change times, which together with the indirect injection nature of the engine are important challenges for the simulation code. Explicit multiple diagrams are given to describe the engine and turbocharger transient behaviour including smoke predictions. The agreement between experimental and predicted responses is satisfactory, for all the cases examined, proving the validity of the simulation process, while providing useful information for the engine response under various transient operations. (C) 1998 John Wiley & Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	International Journal of Energy Research	en
dc.identifier.doi	10.1002/(SICI)1099-114X(19980325)22:4<317::AID-ER368>3.0.CO;2-5	en
dc.identifier.isi	ISI:000072789300003	en
dc.identifier.volume	22	en
dc.identifier.issue	4	en
dc.identifier.spage	317	en
dc.identifier.epage	331	en