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1、AppliedThermalEngineering37(2012)344e352ContentslistsavailableatSciVerseScienceDirectAppliedThermalEngineeringjournalhomepage:www.elsevier.com/locate/apthermengValidationofazero-dimensionalmodelforpredictionofNOxandengineperformanceforelectronicallycontrolledmarin
2、etwo-strokedieselenginesaaa,*baFabioScappin,SigurðurH.Stefansson,FredrikHaglind,AndersAndreasen,UlrikLarsenaTechnicalUniversityofDenmark,DepartmentofMechanicalEngineering,DK-2800Kgs.Lyngby,DenmarkbMANDiesel&Turbo,EngineProcessResearch,ProcessDevelopment,MarineLowS
3、peedDevelopment,Teglholmsgade41,DK-2450CopenhagenSV,DenmarkarticleinfoabstractArticlehistory:TheaimofthispaperistoderiveamethodologysuitableforenergysystemanalysisforpredictingtheReceived24May2011performanceandNOxemissionsofmarinelowspeeddieselengines.Thepaperdesc
4、ribesazero-Accepted22November2011dimensionalmodel,evaluatingtheengineperformancebymeansofanenergybalanceandatwoAvailableonline30November2011zonecombustionmodelusingidealgaslawequationsoveracompletecrankcycle.Thecombustionprocessisdividedintointervals,andtheproduct
5、compositionandflametemperaturearecalculatedinKeywords:eachinterval.TheNOemissionsarepredictedusingtheextendedZeldovichmechanism.ThemodelisxDieselenginevalidatedusingexperimentaldatafromtwoMANB&Wengines;onecasebeingdatasubjecttoengineModelingparameterchangescorrespo
6、ndingtosimulatinganelectronicallycontrolledengine;thesecondcaseEnginetuningNOprovidingdatacoveringalmostallmodelinputandoutputparameters.ThefirstcaseofvalidationxPerformancesuggeststhatthemodelcanpredictspecificfueloilconsumptionandNOxemissionswithinthe95%Optimizati
7、onconfidenceintervalsgivenbytheexperimentalmeasurements.ThesecondvalidationconfirmstheEmissionscapabilityofthemodeltomatchmeasuredengineoutputparametersbasedonmeasuredengineinputZero-dimensionalparameterswithamaximum5%deviation.Ó2011ElsevierLtd.Allrightsreserved.1.I
8、ntroductionacombinedenergysystem,thefocusisontheinteractionamongcomponentsinthesystemratherthanoncomponentbehavior.Thedevelopmentofmarinelowspeeddiesele
