Thermodynamic determination of the top dead centre of diesel engines

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dc.contributor.author Kouremenos, DA en
dc.contributor.author Margaronis, JE en
dc.date.accessioned 2014-03-01T01:07:01Z
dc.date.available 2014-03-01T01:07:01Z
dc.date.issued 1987 en
dc.identifier.issn 0015-7899 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/9746
dc.subject.classification Engineering, Multidisciplinary en
dc.subject.classification Engineering, Mechanical en
dc.subject.other AMPLIFIERS en
dc.subject.other DATA PROCESSING - Data Acquisition en
dc.subject.other MARINE ENGINES en
dc.subject.other PIEZOELECTRIC TRANSDUCERS - Applications en
dc.subject.other THERMODYNAMICS en
dc.subject.other ALGORITHMS en
dc.subject.other CHARGE AMPLIFIERS en
dc.subject.other INDICATOR DIAGRAMS en
dc.subject.other DIESEL ENGINES en
dc.title Thermodynamic determination of the top dead centre of diesel engines en
heal.type journalArticle en
heal.identifier.primary 10.1007/BF02558495 en
heal.identifier.secondary http://dx.doi.org/10.1007/BF02558495 en
heal.language English en
heal.publicationDate 1987 en
heal.abstract The indicator diagram of the Diesel engine is a valuable source of information, delivering many important data. In order to obtain from it the indicated horse power, the exact position of the top dead centre is needed. Using a measuring system containing a piezoelectric sensor, a charge amplifier and a fast data aquisition system, it is possible to store, analyze and process many successive thermodynamic cycles for each cylinder in such a way as to obtain the exact position of the top dead centre without using any additional signal from, or any mark on the flywheel. For that purpose, the experimental compression part of many successive cycles is compaired continuously to a simulation compression model containing varying parameter values determined by the measured cycle itself. After the experimental and the simulation compression curves fit each other, the top dead centre can be determined. Different known heat transfer models of the compression have been used and tested, and a new method, using stepwise chaning parameters along the compression is proposed. The method has been tested for different Diesel engines running at speeds between 100 and 2500 r.p.m. with a very good success. The results given concern three types of Diesel Engines i.e. one MAN W4V 17,5/22 A DG, 140 BHP, 1000 r.p.m. coupled to a Zoellner hydraulic brake, a ship's Diesel SULZER 5RND68, 7500 BHP, 137 r.p.m. measured on sea trials and two stationary FIAT GMT A420.8, 55000 BHP, 500 r. p.m., coupled to a synchronous electric generator. © 1987 VDI Verlag GmbH. en
heal.publisher Springer-Verlag en
heal.journalName Forschung im Ingenieurwesen en
dc.identifier.doi 10.1007/BF02558495 en
dc.identifier.isi ISI:A1987G728400001 en
dc.identifier.volume 53 en
dc.identifier.issue 2 en
dc.identifier.spage 37 en
dc.identifier.epage 42 en

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