Development and validation of a diagnosis method for diesel engines

Kouremenos, DA; Rakopoulos, CD; Hountalas, DT

dc.contributor.author	Kouremenos, DA	en
dc.contributor.author	Rakopoulos, CD	en
dc.contributor.author	Hountalas, DT	en
dc.date.accessioned	2014-03-01T01:44:40Z
dc.date.available	2014-03-01T01:44:40Z
dc.date.issued	1996	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24453
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0030410226&partnerID=40&md5=eaceeac7f41bd5e224efc8f5aba49839	en
dc.subject.other	Computer simulation	en
dc.subject.other	Engine cylinders	en
dc.subject.other	Maintenance	en
dc.subject.other	Monitoring	en
dc.subject.other	Pipe	en
dc.subject.other	Pressure	en
dc.subject.other	Thermodynamics	en
dc.subject.other	Engine tuning	en
dc.subject.other	Fault diagnosis	en
dc.subject.other	Pressure diagrams	en
dc.subject.other	Diesel engines	en
dc.title	Development and validation of a diagnosis method for diesel engines	en
heal.type	journalArticle	en
heal.publicationDate	1996	en
heal.abstract	Diesel engines are used widely for power production and other applications such as sea vessels, railways, transportation etc. A serious problem for the service engineer is their maintenance and tuning in order to obtain maximum performance and reliable operation during their operational lifetime. Another serious problem is the detection of faults and their cause especially in the case when the engine does not function properly, i.e. low power output or high exhaust gas temperature. Up to now various techniques have been used for diesel engine monitoring and fault diagnosis that are mainly statistical. These techniques have serious disadvantages since they cannot be applied generally but have to be developed for the specific engine under consideration and fail to provide the actual cause in the case of a fault. To overcome these problems a new method is proposed in the present work for engine monitoring and fault diagnosis. This method allows to know the condition of the engine at each time instant and to determine if a fault exists. The method is based on a thermodynamic simulation model and on the processing of pressure diagrams taken from the engine cylinder and the high pressure fuel pipe. Using this method we can determine the actual cause for a fault and the condition of the engine and its subsystems. In this way we can save both money and time since we need only to conduct repairs that are actually required instead of making them on a time basis. Another advantage of the proposed method is that we can determine the required tuning of the engine in order to have optimum performance. This is important because the engineer tunes the engine based on data supplied by the manufacturer that correspond to a new engine condition, while for an old engine with wear the required tuning is different. In the present work the results obtained from the application of the proposed diagnosis method on two types of diesel engines, a low speed marine engine and a medium speed marine one are presented. The results obtained are promising, revealing the validity of the method.	en
heal.journalName	American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES	en
dc.identifier.volume	36	en
dc.identifier.spage	527	en
dc.identifier.epage	538	en