Optimum hybrid vehicle configurations for heavy duty applications

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1、OptimumHybridVehicleConfigurationsforHeavyDutyApplicationsJonathanBurkeSmithThesissubmittedtoTheCollegeofEngineeringandMineralResourcesatWestVirginiaUniversityinpartialfulfillmentoftherequirementsforthedegreeofMasterofScienceinMechanicalEngineeringNigelN.Clark,Ph.D.,ChairChristo

2、pherM.Atkinson,Sc.D.ThomasR.Long,Ph.DDepartmentofMechanicalandAerospaceEngineeringMorgantown,WestVirginia2001UMINumber:1405818________________________________________________________UMIMicroform1405818Copyright2001byBell&HowellInformationandLearningCompany.Allrightsreserved.This

3、microformeditionisprotectedagainstunauthorizedcopyingunderTitle17,UnitedStatesCode.____________________________________________________________Bell&HowellInformationandLearningCompany300NorthZeebRoadP.O.Box1346AnnArbor,MI48106-1346Increasedconcernaboutthefueleconomyofandemission

4、sfromautomobileshasledtointerestintheuseofhybridelectricpowertrainsandtheintroductionofseveralproductionvehiclesinbothheavy-dutyandlight-dutyapplications.Hybridelectricvehicles(HEVs)useacombinationofelectricmotor(s)andanotherpowersourcesuchasaninternalcombustionengine(ICE)orfuel

5、cell.Whilethesevehiclesshowgreatpotentialforuseinawidevarietyofdrivingsituations,theoptimizationofcomponentsandcontrolstrategiesisquitecomplex.Inthisthesis,Class2B,Class6,andClass8vehiclesaredeterminedbyaveragingavarietyofactualvehiclesfromeachclassandaresimulatedinMicrosoftExce

6、loveravarietyofdrivingcyclestoattempttooptimizetheirdesignandcontrol.Thedrivecyclesaremodifiedtorepresentrealisticexpectationsofthedynamicperformanceofvehiclesfromeachclass.Twotypesofhybridpowertrainsaresimulated.TheseriesHEVispropelledsolelybyelectricmotorswithenergycomingfromb

7、atteriesandanalternatordrivenbyanICE.TheparallelHEVispropelledbybothelectricmotorsandanICEwithcharging-while-drivingcapabilities.Themodelisbasedonpowerrequirementsforeachvehicleclassandaddressesconcernssuchasengine,battery,anddrivelineefficiencies.Thecontrolstrategyforcestheengi

8、netorunatafixedpercentageofthepowerrequiredatth