Simulation and analysis of a naturally aspirated idi diesel engine under transient conditions comprising the effect of various dynamic and thermodynamic parameters

Rakopoulos, CD; Giakoumis, EG

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Giakoumis, EG	en
dc.date.accessioned	2014-03-01T01:14:10Z
dc.date.available	2014-03-01T01:14:10Z
dc.date.issued	1998	en
dc.identifier.issn	0196-8904	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12894
dc.subject	Naturally aspirated diesel engine	en
dc.subject	Recovery period	en
dc.subject	Speed droop	en
dc.subject	Transient performance	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	Combustion	en
dc.subject.other	Computer simulation	en
dc.subject.other	Differential equations	en
dc.subject.other	Energy conservation	en
dc.subject.other	Engine cylinders	en
dc.subject.other	Friction	en
dc.subject.other	Fuel pumps	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Transients	en
dc.subject.other	Naturally aspirated diesel engines	en
dc.subject.other	Diesel engines	en
dc.title	Simulation and analysis of a naturally aspirated idi diesel engine under transient conditions comprising the effect of various dynamic and thermodynamic parameters	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0196-8904(96)00233-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0196-8904(96)00233-6	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	This work presents an analysis of the operation of an indirect injection, naturally aspirated, diesel engine under transient conditions resulting from a rapid increase in load. For this purpose, a single-zone thermodynamic model, following the filling and emptying modelling technique, is developed, which accounts for all basic parts of the thermodynamic engine operation; it also covers the dynamic simulation of the engine with special submodels to model the conservation of energy in the crankshaft, the inertia forces, the governor dynamics and the fuel pump characteristics. Unlike most previous models, the transient operation is not regarded as a series of steady state operating points, but care has been taken for the special characteristics of this unsteady operation. To this aim, analytical expressions were derived for the better simulation of combustion, mechanical friction and governor movement, which during the transient operation behave in a different way than at steady state. The model has been tested favourably (at steady state conditions) against results derived from detailed experimental work conducted at the authors' laboratory. A detailed parametric study is made, which includes the influence of a variety of dynamic and thermodynamic parameters on the transient response of the particular engine, as well as of a four-cylinder one with the same technical characteristics. For the latter case, a special multi-cylinder engine model has been developed, accounting in detail for the solution of the governing differential equations for every cylinder separately. Analytical diagrams for the effect of the operating parameters on the transient operation of the two typical properties of speed droop and recovery period are given, which quantify each parameter's contribution. Finally, the effect of a faulty fuel injection system on one cylinder of the four-cylinder engine is studied, providing important information about the engine's non-optumum operation. (C) 1997 Elsevier Science Ltd.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Energy Conversion and Management	en
dc.identifier.doi	10.1016/S0196-8904(96)00233-6	en
dc.identifier.isi	ISI:000071483500012	en
dc.identifier.volume	39	en
dc.identifier.issue	5-6	en
dc.identifier.spage	465	en
dc.identifier.epage	484	en