本科生畢業(yè)設(shè)計(jì)（論文）翻譯資料中文題目：配合新一代液力變矩器的柴油動(dòng)力線的一些特性英文題目：somepropertiesofadieseldrivelinewithhydrodynamictorqueconvertersofthelastestgeneration學(xué)生XX：學(xué)號(hào)：班級(jí)：專業(yè)：機(jī)械工程及自動(dòng)化指導(dǎo)教師：SomepropertiesofadieseldrivelinewithhydrodynamictorqueconvertersofthelatestgenerationAbstractDynamicpropertiesofadrivelinewithacontrolledDieselengine,hydrodynamictransmissionmechanism,additionalgearingandaloading-workingmachineproducingmonmonoharmonicloadingareinvestigated.Solutionofthedynamicproblemisbasedonphenomenologicalexperimentaldata:drivingtorque-speedcharacteristicinthepartoftheprimemoverandso-calledexternalstaticcharacteristicinthehydrotransmissionpart.Thenon-lineartaskissolvedbyamodifiedharmonicbalancemethodthatwasdescribedinprecedingpublicationsbytheauthor.Keywords:Machinedriveline;ControlledDieseldrive;Hydrodynamictorqueconverter;Workingmachine;Periodicloading;StationarydynamicstateNomenclatureandabbreviationsa,b---------Coulombandviscousnon-dimensionalfrictionlossesAi,Bi-------coefficientsinmathematicalexpressionoftorque-speedcharacteristici,im----------kinematictransmission,supplementarygearingtransmissionratioI,Iz-------meanreducedmomentofinertiaindrivingandloadingpartkλ,kK---------tangentslopesofλ(i)andK(i)curvesrespectivelyK-------------momenttransmissionM------------Diesel-enginemomentMD(ω,

z)----controlledtorque-speeddrivingcharacteristicMDmax(ω),MDmin(ω)---torque-speedcharacteristicformaximalandminimalfuelsupplyM1,(),M2,()---pumploadingmomentandturbinedrivingmomentMT1,MT2----frictionlossmomentindrivingandloadingpartMz,Mza----meanvalueandamplitudeofloadingmoment-------------hydrodynamicconvertercharacteristicradiust-------------timeT,TD------------WattregulatorandDiesel-enginetimeconstantu,z---------gasleverandregulatordisplacementw-----------mondynamicvariableε-----------regulatorstructuralparameterζ-----------regulatordampingratioλ-----------coefficientofrotationmomentν-----------loadingangularvelocity,π-------indexdenotingmeanvalueandperiodicalponent---------hydraulicmediumdensity----------rotationangleω1,(),ω2---pumpandturbineangularvelocityDM------Diesel-engineG,GD---additionalandWatt-regulatorgearingHdPT---hydrodynamicpowertransmissionIJ--------InjectorLM------loadingmechanism(workingmachine)P,R,T---pump,reactor,turbineArticleOutline\l"nomen001#nomen001"Nomenclature1.\l"SECX1#SECX1"Introduction2.\l"SECX2#SECX2"Mathematicalmodelofthesystem3.\l"SECX3#SECX3"Stationarydynamicsolutionatmonoharmonicloading4.\l"SECX4#SECX4"Resultsevaluationandconcludingremarks1.IntroductionDynamicpropertiesofadriveline(actuatingunit)consistingofacontrolledDieselengine(DM),hydrodynamicpowertransmissionsystem(HdPT),additionalgearing(G)andaloadingmechanism(LM)orworkingmachineareinvestigated.Theworkingmachineloadstheprimemoverandthetransmissionswithaprescribedmoment.Asimpleidealisedschematiclayoutofthepletesystemisgivenin\l"fig1#fig1"Fig.1.TheconsideredDieselengineisastandardproduction:ZETOR8002.1controlledbyamechanical(Watt’s)orelectronicregulatorRDgoverningfuelinjectorIJ.IntheplaceofthehydrodynamicpowertransmissiontherearegraduallyappliedhydrodynamictorqueconvertersofthelatestgenerationthathavebeenprojectedandtestedinWUSAM(ResearchandProjectingInstituteofMachinesandMechanisms),j.s.c.Zvolen,Slovakia.Theseconvertersrepresentathreeponentassemblyposedofarotationalpump(P),turbine(T)andareactor(R)thatmayrevolveinonedirectionasafreewheel.Advantageoftheseconvertersisthefactthattheirexternaldimensionsandthedimensionsoftheirindividualponentsareidenticalandtheymaybemutuallychangedandarbitrarilybinedinordertoreachdemandedproperties.Theydifferonlybyinternalconfigurationandbladegeometry.Accordingto\l"bib1#bib1"[1]uptonowmorethan70varioustypeshavebeenexperimentallytestedandfromthemtheoneshavebeenchosenthatoptimallyfulfilledrequiredproperties.Themechanicalsystemunderconsiderationrepresentsasophisticatedenergytransferchainfromasource––primemovertoworkingmechanism.Becauseeveryrealdriveisoffinitepower,anyperiodicloadingalwaysevokesvibrationsofallthedynamicvariableseventhoughwesupposealltheconnectingshaftsandgearingsrigidandbacklashfree.Theinfluenceofdynamicloadingontheprimemovermaybejustcontrolledbyasuitablechoiceofthetorqueconverter.Fig.1.

SchematiclayoutoftheDieseldriveline.Inthepaperinfluenceofconstantandperiodicloadingontimecourseofallthedynamicvariablesofthesystem(andparticularlyonthevariablesoftheprimemover)isinvestigatedatapplicationofsomeselectedtypesofhydrodynamictorqueconvertersofthelatestgeneration.Forfulfillingthistaskitisnecessarytocreateasuitablemathematicalmodelofthewholebinedsystemandthenfinditsstationarysolutioncorrespondingtoarequiredloading.2.MathematicalmodelofthesystemAtthebeginningitisnecessarytoemphasizethatmathematicalmodellingofthedrivelineinquestionisbased,inourapproach,onknowledgeofthepublishedphenomenologicaldata:stationarytorque-speedcharacteristicoftheprimemoverandso-calledexternalstaticcharacteristicoftheappliedhydrodynamictorqueconverter.ItisamuchsimplerprocessthanmodellingbasedonthermodynamicequationsofburningfuelmixtureintheDieselengineandonhydrodynamicequationsofrealstreamingworkingmediuminveryplicatedcavitiesofthetorqueconverter.Thecharacteristicsareusuallygivenbymanufactureroftheindividualsystemponents.Thisisdifferentandsimplerapproachtosolutionoftheproblemthanonemayfinde.g.atIshihara\l"bib2#bib2"[2],HrovatandTobler\l"bib3#bib3"[3],KesyandKesy\l"bib4#bib4"[4],Laptev\l"bib5#bib5"[5]andsomeothers.Thederiveddimensionalandnon-dimensionalmathematicalmodelsofthemechanicalsystemareintroducedin\l"bib6#bib6"[6].Thenon-dimensional,reduced,so-calledsingle-shaftmodel(inthedrivingandloadingpart),wasderivedintheformofbinedsystemofthefollowingdifferentialandalgebraicequations:(1)(2)(3)(4)\o"ClicktoviewtheMathMLsource"M2=KM1,(5)\o"ClicktoviewtheMathMLsource"λ=λ(i),(6)\o"ClicktoviewtheMathMLsource"K=K(i),(7)(8)(9)wherethemeaningoftheindividualsymbolsisexplainedinnomenclature.Inthenon-dimensionalmodelallthedynamicvariablesandparametersareexpressedbymeansofproperlychosenrelativestandardquantitiessothatthemodelofthesystemmightbethemostsimple.Transformationoftheoriginalequationssystemtothenon-dimensionalformFigs.\l"fd1#fd1"(1),\l"fd2#fd2"(2),\l"fd3#fd3"(3),\l"fd4#fd4"(4),\l"fd5#fd5"(5),\l"fd6#fd6"(6),\l"fd7#fd7"(7),\l"fd8#fd8"(8)and\l"fd9#fd9"(9)isdescribedindetailin\l"bib6#bib6"[6].Asforthiscitedpaper,itisnecessarytosaythattherelativestandardvalueofloadingangularfrequencyhasbeensettledaccordingtotherelation,whereindenominatorisrelativestandardvalueoftime.Forthisvalue,thetimeconstantoftheregulatorhasbeenjustchosen,i.e.,wheretherelateddimensionaldynamicvariablesaredistinguishedbyupperbars.Theintroducedmathematicalmodelhasninevariables:M,M1,ω1,z,λ,K,i,M2,ω2andtheirmeaningisexplainedinnomenclature.ThefirstthreeequationsrepresentmathematicmodeloftheprimemoverwhereininertiamomentIthereisincludedinertiamomentofthepumpandequivalentpartoftheworkingmediumbecausedrivingandpumpshaftsareconnectedbyarigidclutch.TherightsideofEq.\l"fd3#fd3"(3)representsthecontrolledstationarytorque-speedcharacteristicforwhichitholds:\o"ClicktoviewtheMathMLsource"MD(ω1,z)=MDmax(ω1)-[MDmax(ω1)-MDmin(ω1)]z,(10)whereMDmax(ω1),MDmin(ω1)representitsnon-dimensionalextremebranchesformaximalandminimalfuelsupplyandzisthenon-dimensionalregulatordeviation.IftheexperimentallymeasureddependencesMDmax(ω1),MDmin(ω1)areexpressedbyseconddegreepolynomialsthenthecontrollednon-dimensionaltorque-speedcharacteristichastheform:(11)Fromtheintroducedmodelitisevidentthatatchosenparametervalueudrivingspeedgrowthcausesregulatordisplacementtoincreaseandfuelsupplytodecrease.Theidealisedcontrolledtorque-speedcharacteristicforachosenparametervalueu(gasleverdisplacement)isschematicallydepictedin\l"fig2#fig2"Fig.2.FromEq.\l"fd2#fd2"(2)itisevidentthatthestructuralparameterεmustbechoseninsuchawaythatregulatorself-oscillationsshouldnotoccur.Eqs.Figs.\l"fd4#fd4"(4),\l"fd5#fd5"(5),\l"fd6#fd6"(6),\l"fd7#fd7"(7)and\l"fd8#fd8"(8),inthesenseofconsiderationsin\l"bib6#bib6"[6],representthedynamicequationsofthetorqueconverter.Eq.\l"fd9#fd9"(9)representssimplifiedmotionequationoftheloadingmechanismunderassumptionthatthereducedinertiamomentIzdoesnotdependonrotationangle.Inthisreducedinertiamomentthereisinvolvedinertiamomentoftheturbinewithequivalentpartoftheworkingmediumtoo.Itisobviousthatinthisinertiamomentandinallmomentsoftheloadingmechanismthereisconsideredgearratioimofthesupplementarygearingoftheoriginallynon-reducedsystem.Eqs.Figs.\l"fd6#fd6"(6)and\l"fd7#fd7"(7)representtheexternalstaticcharacteristicofthehydrodynamictransmission,i.e.formaldependencesofλandKonthekinematicratioiandthedependencesaregivenforeveryconvertertypeingraphicalform.ThedynamicvariablesλandKaredefinedinnon-dimensionalformverysimplybynon-linearrelationsFigs.\l"fd4#fd4"(4)and\l"fd5#fd5"(5).Inageneralwaythesenon-dimensionalvariablesaredefinedbymeansofdimensionalvalues(distinguishedbyupperbars)asfollows:(12)whereindividualsymbolmeaningmaybefoundinnomenclature.Aswehavechosen(accordingto\l"fig2#fig2"Fig.2)fortherelativestandardvalueofangularvelocitytheidlemotionangularvelocityoftheDieselengineatmaximalfuelsupply,i.e.atz

=

0,thenfromFigs.\l"fd4#fd4"(4)and\l"fd23#fd23"(12)itisevidentthattherelativestandardmomentvalueis(13)Itmeansthatiffortheapplieddrives?1andalltheappliedconvertertypeshaveequalcharacteristicradiusmandifweconsidermeanvaluekg

m?3atstationarythermicregimethentherelativestandardvalueofthemomentisN

mforalltheconsideredconvertertypes.Theexternalstaticcharacteristicsoftheappliedconverterswithinternallabelling:M350.222,M350.623M,M350.675,M350.72M3M,are(accordingtothemeasuringrecords\l"bib7#bib7"[7])successivelyintroducedin\l"fig3#fig3"Fig.3(a)–(d).Whenthetorque-speedcharacteristicisknownandthemeasureddependencesFigs.\l"fd6#fd6"(6)andHYPERLINK"../白字內(nèi)容添加頁(yè)腳-新建文件夾4-doc/.sciencedirect./science?_ob=Arti