Study of the short-term cylinder wall temperature oscillations during transient operation of a turbocharged diesel engine with various insulation schemes

Rakopoulos, CD; Giakoumis, EG; Rakopoulos, DC

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Giakoumis, EG	en
dc.contributor.author	Rakopoulos, DC	en
dc.date.accessioned	2014-03-01T01:29:15Z
dc.date.available	2014-03-01T01:29:15Z
dc.date.issued	2008	en
dc.identifier.issn	1468-0874	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19187
dc.subject	Heat conduction	en
dc.subject	Insulation	en
dc.subject	Plasma spray zirconia	en
dc.subject	Silicon nitride	en
dc.subject	Temperature oscillations	en
dc.subject	Transient operation	en
dc.subject	Turbocharged diesel engine	en
dc.subject.other	Boundary conditions	en
dc.subject.other	Combustion	en
dc.subject.other	Combustion chambers	en
dc.subject.other	Cylinders (shapes)	en
dc.subject.other	Diesel locomotives	en
dc.subject.other	Diesel propulsion	en
dc.subject.other	Engine cylinders	en
dc.subject.other	Engines	en
dc.subject.other	Fish	en
dc.subject.other	Fourier analysis	en
dc.subject.other	Fourier transforms	en
dc.subject.other	Heat conduction	en
dc.subject.other	Internal combustion engines	en
dc.subject.other	Modal analysis	en
dc.subject.other	Motion estimation	en
dc.subject.other	Nuclear fuel reprocessing	en
dc.subject.other	Plasma diagnostics	en
dc.subject.other	Plasma spraying	en
dc.subject.other	Protective coatings	en
dc.subject.other	Silicon nitride	en
dc.subject.other	Temperature	en
dc.subject.other	Theorem proving	en
dc.subject.other	Thermodynamic properties	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Walls (structural partitions)	en
dc.subject.other	Zirconia	en
dc.subject.other	(100) silicon	en
dc.subject.other	(I ,J) conditions	en
dc.subject.other	Amplitude of oscillations	en
dc.subject.other	Analysis techniques	en
dc.subject.other	Combustion chamber walls	en
dc.subject.other	crank angles	en
dc.subject.other	Cyclic temperatures	en
dc.subject.other	Cylinder wall temperature	en
dc.subject.other	Evolution (CO)	en
dc.subject.other	Fourier	en
dc.subject.other	Friction torque	en
dc.subject.other	Gas temperatures	en
dc.subject.other	Gradient of temperature	en
dc.subject.other	mate rial properties	en
dc.subject.other	Periodic heat conduction	en
dc.subject.other	Plasma sprayed	en
dc.subject.other	simulation codes	en
dc.subject.other	sub models	en
dc.subject.other	transient conditions	en
dc.subject.other	transient operations	en
dc.subject.other	Turbo charged diesel engine	en
dc.subject.other	Diesel engines	en
dc.title	Study of the short-term cylinder wall temperature oscillations during transient operation of a turbocharged diesel engine with various insulation schemes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1243/14680874JER00608	en
heal.identifier.secondary	http://dx.doi.org/10.1243/14680874JER00608	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	This work investigates the phenomenon of short-term temperature (cyclic) oscillations in the combustion chamber walls of a turbocharged diesel engine during transient operation after a ramp increase in load. For this purpose, an experimentally validated simulation code of the thermodynamic cycle of the engine during transient conditions is used. This takes into account the transient operation of the fuel pump and the development of friction torque using a detailed per degree crank angle submodel, while the equations for each cylinder are solved individually and sequentially. The thermodynamic model of the engine is appropriately coupled to a wall periodic heat conduction model, which uses the gas temperature variation as boundary condition throughout the engine cycle after being treated by Fourier analysis techniques. Various insulation schemes are examined (plasma spray zirconia, silicon nitride) for load-increase transient operation. The evolution of many variables during transients is depicted, such as amplitude of oscillation, depth where the swing dies out, or gradient of temperature swing. The investigation reveals many interesting aspects of transient engine heat transfer, regarding the influence that the engine wall material properties have on the values of cyclic temperature swings. © IMechE 2008.	en
heal.publisher	PROFESSIONAL ENGINEERING PUBLISHING LTD	en
heal.journalName	International Journal of Engine Research	en
dc.identifier.doi	10.1243/14680874JER00608	en
dc.identifier.isi	ISI:000261099100001	en
dc.identifier.volume	9	en
dc.identifier.issue	3	en
dc.identifier.spage	177	en
dc.identifier.epage	193	en