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1、ResearchonthesystemconfigurationandenergycontrolstrategyforparallelhydraulichybridloaderSunHui,,JingJunqingJiangsuXuzhouConstructionMachineryResearchInstitute,Jiangsu,ChinaAccepted30October2009.Availableonline22November2009.http://dx.doi.org/10.1016/j.autcon.2009.10.006,HowtoCiteo
2、rLinkUsingDOIPermissions&ReprintsAbstractAimedatthefrequentstarts/stopsoperationcharacteristicsoftheloader,anenergysavingschemewithparallelhydraulichybridsystemisproposedtoregenerateandreusethebrakingenergynormallylostinaconventionalloader.Hydraulichybridsystemisdesignedandsizedto
3、capturebrakingenergyfromnormal–moderatebrakingoperatingmodeswhileensureshybridsystemworkinginhigherefficiencyregion.Accordingtothehigherpowerdensitycharacteristicofhydraulichybridsystem,theregenerativebrakingstrategyandenergyreusestrategyaredesignedtocoordinateallthepowertraincomp
4、onentsinanoptimalmannerwhilesatisfyingperformanceconstraintsofloader.Energycontrollerusinglogicthresholdapproachisbuiltuptocontrolthedynamictransitionsamongthevariousoperationmodes.Simulationandexperimentalresultsshowtheparallelhydraulichybridloader(PHHL)effectivelyrecoveredandreu
5、sedthebrakingenergy,improvedtheworkingperformanceofloaderandeffectivelyreducedthefuelconsumption.KeywordsLoader;Hydraulichybridsystem;Brakingenergyregeneration;Energymanagement;Hydraulicpump/motor1.IntroductionWiththerisingconcerninaglobalscaleenvironmentalissue,energysavinginauto
6、mobilesisaveryimportantsubject[1]?and?[2].Off-roadvehicleshavebeenpaidmuchattentioninthefieldofenergysavingandenvironmentprotection,forthereasonoftheirlargeapplicationquantities,highfuelconsumptionandbademissions[3].Loaderhasthecharacteristicsoffrequentstarts/stopsandlargervehicle
7、weightwhichgeneratedsignificantamountsofbrakingenergy.Usually,thispartofenergyiswastedbythefrictionalbrakingsystemwhichcausedtheenergylossandheatgenerationinthesystem.Therefore,thebrakingenergyrecoveryandreuseisapromisingwaytoimprovefueleconomyandworkingperformanceofoff-roadvehicl
8、es[4]?and?[5].Thereisawealthoflit
