Study of crankshaft torsional deformation under steady-state and transient operation of turbocharged diesel engines

Giakoumis, EG; Rakopoulos, CD; Dimaratos, AM

dc.contributor.author	Giakoumis, EG	en
dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Dimaratos, AM	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	1464-4193	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19183
dc.subject	Crankshaft	en
dc.subject	Diesel engine	en
dc.subject	Torsional deformation	en
dc.subject	Transient operation	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Mechanics	en
dc.subject.other	Crankshafts	en
dc.subject.other	Mathematical models	en
dc.subject.other	Research and development management	en
dc.subject.other	Thermodynamic properties	en
dc.subject.other	Torsional stress	en
dc.subject.other	Torsional deformation	en
dc.subject.other	Transient operation	en
dc.subject.other	Diesel engines	en
dc.title	Study of crankshaft torsional deformation under steady-state and transient operation of turbocharged diesel engines	en
heal.type	journalArticle	en
heal.identifier.primary	10.1243/14644193JMBD113	en
heal.identifier.secondary	http://dx.doi.org/10.1243/14644193JMBD113	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The modelling of transient operation of turbocharged diesel engines appeared in the early 1970s, and continues to be in the focal point of research due to the importance of transient response in the everyday operating conditions of engines. The majority of studies have focused so far on thermodynamics, as this directly affects heat release predictions and consequently performance and pollutants emissions. On the other hand, issues concerning the dynamics of engine operation are often disregarded or over-simplified. In the present work, an experimentally validated diesel engine simulation code is used to study and evaluate the importance of a notable engine dynamic issue, i.e. the crankshaft torsional (angular) deformations during turbocharged diesel engine operation owing to the difference between instantaneous engine and load (resistance) torques. The analysis aims ultimately in studying the phenomena under the very demanding, and often critical, transient operating conditions. Detailed crankshaft angular momentum equilibrium is formulated that takes into account instantaneous gas, inertia, friction, load as well as stiffness, and damping torque contributions. Details are provided concerning the underlying mechanism of the crankshaft torsional deformations during steady-state and transient operation. This deformation can assume significant values depending on the engine-load configuration (load change, crankshaft stiffness, kind of aspiration of the engine), and as such it is of great importance for safe engine operation. © IMechE 2008.	en
heal.publisher	PROFESSIONAL ENGINEERING PUBLISHING LTD	en
heal.journalName	Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics	en
dc.identifier.doi	10.1243/14644193JMBD113	en
dc.identifier.isi	ISI:000254988100002	en
dc.identifier.volume	222	en
dc.identifier.issue	1	en
dc.identifier.spage	17	en
dc.identifier.epage	30	en