Experimental study of combustion noise radiation during transient turbocharged diesel engine operation

Giakoumis, EG; Dimaratos, AM; Rakopoulos, CD

dc.contributor.author	Giakoumis, EG	en
dc.contributor.author	Dimaratos, AM	en
dc.contributor.author	Rakopoulos, CD	en
dc.date.accessioned	2014-03-01T01:35:40Z
dc.date.available	2014-03-01T01:35:40Z
dc.date.issued	2011	en
dc.identifier.issn	0360-5442	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21158
dc.subject	Diesel engine	en
dc.subject	Combustion noise	en
dc.subject	Acceleration	en
dc.subject	Load increase	en
dc.subject	Turbocharger lag	en
dc.subject.classification	Thermodynamics	en
dc.subject.classification	Energy & Fuels	en
dc.title	Experimental study of combustion noise radiation during transient turbocharged diesel engine operation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.energy.2011.05.043	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.energy.2011.05.043	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Diesel engine noise radiation has drawn increased attention in recent years since it is associated with the passengers' and pedestrians' discomfort, a fact that has been acknowledged by the manufacturers and the legislation in many countries. In the current study, experimental tests were conducted on a truck, turbocharged diesel engine in order to investigate the mechanism of combustion noise emission under various transient schedules experienced during daily driving conditions, namely acceleration and load increase. To this aim, a fully instrumented test bed was set up in order to capture the development of key engine and turbocharger variables during the transient events. Analytical diagrams are provided to explain the behavior of combustion noise radiation in conjunction with cylinder pressure (spectrum), turbocharger and governor/fuel pump response. Turbocharger lag was found to be the main cause for the noise spikes during all test cases examined, with the engine injection timing calibration and the slow adjustment of cylinder wall temperature to the new fueling conditions playing a vital role. The analysis was extended with a quasi-steady approximation of transient combustion noise using steady-state maps, in order to better highlight the effect of dynamic engine operation on combustion noise emissions. (C) 2011 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	ENERGY	en
dc.identifier.doi	10.1016/j.energy.2011.05.043	en
dc.identifier.isi	ISI:000295237300040	en
dc.identifier.volume	36	en
dc.identifier.issue	8	en
dc.identifier.spage	4983	en
dc.identifier.epage	4995	en