Downspeeding the Diesel Engine – A Performance Analysis

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dc.contributor.authorArunachalam, Prakash Narayanan
dc.contributor.departmentChalmers tekniska högskola / Institutionen för tillämpad mekaniksv
dc.contributor.departmentChalmers University of Technology / Department of Applied Mechanicsen
dc.date.accessioned2019-07-03T12:42:34Z
dc.date.available2019-07-03T12:42:34Z
dc.date.issued2011
dc.description.abstractOwing to the high overall efficiency, truck manufacturers stick to diesel engines particularly in the case of long haul heavy duty trucks. In the ever increasing demand to increase the efficiency and to decrease the emission levels of the internal combustion engines an attempt is made in this thesis work to increase the fuel efficiency. There are many ways to increase the fuel efficiency like varying compression ratio, downsizing, down speeding, advanced combustion concepts (PCCI, HCCI) etc. but each of the mentioned method comes with challenges. In this thesis work an effort is made to study downspeeding by means of extensive simulation using commercial software GT-Power. By down speeding, the engine is made to run at low speeds and with high torques. For the same power the engine is operated at higher specific load (BMEP) which results in higher efficiency and reduced fuel consumption (BSFC). The reasons for increased fuel efficiency are reduced engine friction due to low piston speeds, reduced relative heat transfer and increased thermodynamic efficiency. Since this is a conceptual study and experiments may require a new engine design altogether, scope of the study is limited to simulation results and no validation is done.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/147782
dc.language.isoeng
dc.relation.ispartofseriesDiploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden : 2011:50
dc.setspec.uppsokTechnology
dc.subjectEnergi
dc.subjectTransport
dc.subjectHållbar utveckling
dc.subjectFarkostteknik
dc.subjectEnergy
dc.subjectTransport
dc.subjectSustainable Development
dc.subjectVehicle Engineering
dc.titleDownspeeding the Diesel Engine – A Performance Analysis
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeAutomotive engineering (MPAUT), MSc
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