Gas exchange modeling of a single-cylinder engine

Visa enkel post
dc.contributor.authorSommarsjö, Sara
dc.contributor.authorLengquist, Magnus
dc.contributor.departmentChalmers tekniska högskola / Institutionen för tillämpad mekaniksv
dc.contributor.departmentChalmers University of Technology / Department of Applied Mechanicsen
dc.date.accessioned2019-07-03T13:51:51Z
dc.date.available2019-07-03T13:51:51Z
dc.date.issued2015
dc.description.abstractFossil fuels are dominating the transport sector but due to concerns regarding the climate change, oil resources availability and conflicts in the world, the interest of alternative fuels has increased. Therefore, the purpose of this work is to model a single-cylinder GT-Power gas exchange model that is running on the alternative fuel, dimethyl ether (DME). The model aims to simulate in-data necessary for further development of the combustion process that will be carried out through CFD analyses. The model will be verified through measured test data of previously performed DME engine tests. This thesis work resulted in a predictive combustion model, DIPulse, with exhaust gas recirculation (EGR) that is calibrated for two engine load points, B50 and C100. It is able to handle a wide range of EGR amounts and injected fuel masses. CO2 predictions for inlet- and exhaust gases have 9.5% and 4.8% accuracy respectively compared with measured lab data and the maximum cylinder pressure has an accuracy of 1.2%. However, the model can neither handle transient behaviors nor load points other than B50 and C100. It was difficult to achieve accurate CO2 concentration levels that agrees with the measured data. However, consistent results from the simulations are expected to be difficult to achieve due to significant variations in measured CO2 concentrations during engine tests.
dc.identifier.urihttps://hdl.handle.net/20.500.12380/228889
dc.language.isoeng
dc.relation.ispartofseriesDiploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden : 2015:90
dc.setspec.uppsokTechnology
dc.subjectTransport
dc.subjectHållbar utveckling
dc.subjectTermisk energiteknik
dc.subjectTransport
dc.subjectSustainable Development
dc.subjectThermal energy engineering
dc.titleGas exchange modeling of a single-cylinder engine
dc.type.degreeExamensarbete för masterexamensv
dc.type.degreeMaster Thesisen
dc.type.uppsokH
local.programmeSustainable energy systems (MPSES), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
228889.pdf
Storlek:
3.22 MB
Format:
Adobe Portable Document Format
Beskrivning:
Fulltext
Ladda ner
Samling
Examensarbeten för masterexamen