Investigation of turbocharged diesel engine operation, exhaust emissions, and combustion noise radiation during starting under cold, warm, and hot conditions

Rakopoulos, CD; Dimaratos, AM; Giakoumis, EG

dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Dimaratos, AM	en
dc.contributor.author	Giakoumis, EG	en
dc.date.accessioned	2014-03-01T02:04:30Z
dc.date.available	2014-03-01T02:04:30Z
dc.date.issued	2011	en
dc.identifier.issn	0954-4070	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29452
dc.subject	turbocharged diesel engine	en
dc.subject	starting	en
dc.subject	transient emissions	en
dc.subject	nitric oxide	en
dc.subject	smoke opacity	en
dc.subject	combustion noise	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.classification	Transportation Science & Technology	en
dc.title	Investigation of turbocharged diesel engine operation, exhaust emissions, and combustion noise radiation during starting under cold, warm, and hot conditions	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Control of performance and transient emissions from turbocharged diesel engines is an important objective for automotive manufacturers, since stringent criteria for exhaust emissions must be met. In particular, (cold) starting is of exceptional importance owing to its significant contribution to the overall emissions during a transient test cycle. In the present work, experimental tests were conducted on a turbocharged and after-cooled bus-truck diesel engine in order to investigate the engine operating behaviour and the formation mechanisms of nitric oxide, smoke, and combustion noise during cold, warm, and hot starting. With this as a target, a fully instrumented test bed was set up, using ultra-fast response analysers capable of capturing the instantaneous development of emissions and various key engine and turbocharger parameters. The experimental test pattern included a variety of starting conditions, defined by the thermal status of the engine (i.e. the coolant temperature) and its idling speed. As expected, turbocharger lag was found to be the major contributor for the pollutant emissions spikes in all cases, with the thermal status of the engine and its idling speed playing important roles in the combustion (in) stability, turbocharger response, and noise radiation.	en
heal.publisher	PROFESSIONAL ENGINEERING PUBLISHING LTD	en
heal.journalName	PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING	en
dc.identifier.isi	ISI:000294265300003	en
dc.identifier.volume	225	en
dc.identifier.issue	D9	en
dc.identifier.spage	1118	en
dc.identifier.epage	1133	en