55921-4汽车专业英语 王海林汽车维修学习课件专业英语unit7

主讲：xxx,Xxx学校,Part2ReadingGuidetoCommonEnglishforAutomobileServiceandMaintenance第二部分汽车维护常用英语导读,Unit7OperatingGuidetoAutomobileMaintenanceEquipment(汽车维护设备操作引导),7.1V.A.G1552DiagnosisInstrument,TheV.A.G1552measuringapparatususedinautomotivesystemofVolkswagenAutomotiveCorporationinGermanyisamulti-functioneddiagnosisapparatusformotorvehicles.Theapparatuscanchecknotonlythetroublememorysystemfunctionanddeletethetroublememoryfunction,implementthecallanddeletionoftroublecode,butalsohasaverypowerfuldataflowfunction.,1.display显示屏2.diagnosticconnector(powerandsignalinput)诊断电缆(包括电源与信号输入)的插座3.Procedurecard程序卡4a.V.A.G1551/3diagnosticdatalineV.A.G1551/3诊断电缆4b.V.A.G1551/1diagnosticdatalineV.A.G1551/1诊断电缆5.Touchtypekeyboard触摸式键盘,7.1.1SelecttheModeofOperation(选择操作模式)ConnecttheV.A.G1552withthespecialdiagnosticsocket,youcanseetheflowingshowimmediately:Thescreenisbright,presentedbuff,2s3s.Immediatelyafterthis,thescreenshows2linesofblackpanes,40paneseachrow,eachpaneisconsistof57lattice.Showtheeditionofprocedurecardinsidethetester.,Getintoastabledisplaywidow（1）.（接着进入一种稳定的显示窗口（1）：）,（1）,Actually,thetesterhasalreadygotintothe1stworkmodeatthistime-therapiddatatransfer,youcanhave3kindsofchoices:inputaddresscodedirectly,entertheelectriccontrolsystemthatyouwant;presstheHELPkeyandhelpyourselftoseektheaddresscode；presstheCkey,selectanother2kindsofworkmodes,namelyinstrumentself-diagnosisandsearchservicestation(salecompany)code.Wewillintroducethethreechoicesrespectively.,Forthefirstselection,ifyouhavealreadyknowntheelectriccontrolsystemcodeonvehicle,suchas01-engineelectronicsystem,02-automatictransmissionelectronicsystem,03-ABS,25-immobilize,theninputtheaddresscode,cangetintothesystemimmediately,selectafunctioncodeagain,cancarryonmalfunctiondiagnosis.,Forthesecondselection,ifyoudontknowtheaddresscode,butdesireoftestingthesystem,thenyoucanpresstheHELPkeyaccordingtothehintofscreen.Thescreenwillthenshow38addresscodeswith80s.Seetable7-1.Afteralladdresscodesonebyoneinordershowing1time,thescreenwillreturntothewindowofselectingaddresscode(window1).,Forthe3rdselection,presstheCkey,thetestercangetintoanother2kindsofworkmodes,certainlycanalsoreturntothe1stworkmodeandthescreenshowswindow(2).,（2）,Ifyoupressonekey,thescreenwillreturntowidow(1);ifyoupressHELPkey,thescreenwillshowthekeyboardfunctionwith23s:,USINGTHEV.A.G1552,Afterthecontentsof“HELP”isover,thescreenwillreturntothewidow(2)-workmode.Ifpress3keyatthistime,thetesterwillgetintoselfteststate,thescreenwillshow:Thescreenwillturnintoshowthecontentsseveralsecondslater:,Thescreenwillspend155sshowingtheprompt,thenitwillshow:Presskeycanendtheselftest,screenagainreturntowindow(2)workmode.Ifyoupressthe4keyatthistime,thescreenshowsawindow(3)aboutdealershipcode.Pressthe1key,thescreenwillshow:,（3）,Dealershipcode-,（4）,Presskey,screenwillreturntowindow(3)again;ifyoupressthe2key(feedin)atthistime,thescreenwillshow:,Thedealershipcodeis“01000”.Thetesterwillreturntowidow(3)immediately.PresstheCkeyinwindow(3),enterwindow(2),pressthe1keytoreturntowindow(1).Ifyouinputtheaddresscode01,thedisplayscreenwillshowtherelatedinformationoftheECU,suchastheenginedisplacement,cylinderandvalvenumber,procedurenumber,editionnumber,controlunitcode,andthelastoneisthedealershipcode(WSC0000).Itindicateswhichdealershipprogrammedthecodeatlast.,7.1.2FindouttheTroubleLocationandtheCauseofTrouble,InserttheplugofV.A.G1552intothediagnosticsocketonvehicle,thescreenwillgetintotheaddresscodewidow(1),inputtheaddresscode.Ifyouwanttotesttheengineelectriccontrolsystem,input01,theinthescreenwillchangeinto01,thescreenshowswindow(5).,（5）,Thescreenindicates“Q”confirmationkey,thensuchscreenwillappear:,Thescreenstillindicates“Q”,presstheQkey,thescreenwillshowwindow(6):Whythecontrolunitdoesnotanswer?PressHELPkey,screenwillshowthepossiblecauseswith25s.,（6）,Controlunitdoesnotanswer!Possiblecauses:1.Incorrectaddresswordinserted2.controlunitnotindiagnosismodeIgnitionnotswitchonorK1,15MissingonCUEngineSpeedingreaterthanthediagnosisendspeed3Diagnoscableeffectiveorincorrectlyattached4Wiringbetweencontrolunitanddiagnosisconnectiondefective,Findouttherealcauseaccordingtothepossiblecauses.Forexample,donotconnecttheignitionswitch,theabove-mentionedprocesswillappear.Closetheignitionswitch,thescreenwillshowwindow(1).Input01,presstheQkey,screenwillgetintoengineelectroniccontrolsystem,anddisplaythemaininformationoftheenginecontrolunit.Forexample,theenginecontrolunitofaPassatcar：,800907559BindicatesthepartnumberofJ220controlunit.1.8Lindicatestheenginedisplacementis1.8L.R4/5Vindicatesin-linefourcylinder,5-valvespercylinderengine.MOTRindicatestheelectriccontrolsystemisMOTORONIC3.8.3type.HSrepresentsmanualtransmission.D01indicatesprocedurenumber.Codingisthecodeforthecontrolunit.WSCindicatesthecodeofdealershipwherethecarwasmaintainedlasttime.,Press,indicatesenteringthefunctionselectionwindow(7),thescreenonlycanshowthefollowingcharactersaftergetintoaddresswindow:Atthistime,ifthetesterisinputtedonefunctioncode(0111),itcangetintothefunctionappearance.Ifyoucannotrememberafunctioncodeclearly,presstheHELPkey,thetestercanshowthis11functioncodesquickly.,（7）,Inputthefuncitoncode,thenthefunctioninstrucitonthetestersentoutwillbespreadtothecontrolunitonthecar.Ifthecontrolunitisntpreparedforthefunctionselectedortheoperationcantcarryout,thescreenwillshow:Presskey,thescreenwillreturntofunctionselectionwindow(7).Inputcode01,thescreenwillshowtherelatedinformationofcontrolunit.presscode02selectfaultmemory,ifnofaultisrecorded,thescreenthenshows:,Iffaultisrecorded,thescreenwillshowthefaultnumberfirstly.Exmple:Presskey,screenwillshoweachefaultcodeanditsrelatedtext.thescreencanonlyshows2lines,soyoucanpressthekeytoturnoverpage,andshowallthefaultonebyone.,Faultsource:16705EnginespeedsenderG28Nosignal/SPFaultsource:17967Throttlevalvecontrolunit-J338FaultinbasicsettingFaultsource:16518LamdbdaprobeG39Nosignal,Clearthefaultcode,completetheinput.Whenthedisplayoffaultlocationandcausesoffaultiscompleted,presstheCkeytoexitthewindow,returntofunctionselectionwindow,press0and5keytoselect“erasefaultmemory”,andpresstheQkeytoconfirm.Now,thescreenshowswindow(8)：But,ifthefaulthasnotbeenremoved,thefaultmemorycantbeerased.Afterinputthe05key,thescreenwillshowwindow(9):,（8）,（9）,Aftertheremovaloffault,presskey,thescreenwillreturntowindow(7).Pressthe0keyorthe6key,select“endinput”,andpresstheQkeytoconfirm,thescreenwillreturntowindow(1).Now,youcanpullouttheplugandendthetest.,7.2Automobiledecoder,Automobileelectriccontrolsystemdiagnostictester,besocalleddecoder,canreadthefaultcodeandvariousoperationparameter,evencanre-programtotheautoPC.Inthischapter,wemainlyintroducehowtousetheD91diagnostictester.Seefigure7-2.D91isanewlydevelopedautomobilediagnosticcomputer.Itisdesignedforusebyprofessionalautomotiveservicetechnicianstoreviewandcleardiagnostictroublecodesandviewdatastreaminformationonsystemswhichsupportit.IthasReadfaultycode,clearfaultycode,datasteam，activatestate,programmingandcodingcontrolunitandcomponenttestetcfunction.,WeCombinewiththeactualexamplesoftroublediagnosisofBENZ320SELcartoexplaintheoperationofD91decoder.Closealltheelectricapplianceonthecarfirst,linkthehardware.InserttheBenzspecialdiagnosticcardintotheD91diagnosticcardslot,connectthedataline.Connectalltheparts,andthenstarttheoperation.,Themalfunctionofthecarisunstableidle,andemittingblacksmokewhenaccelerating.Getintothesystemfirst,thescreenwillshinewhenthediagnosticconnectorisconnected,showingtherelatedinformation,thenenterthediagnosticcatalogue.Thedisplayshows:Pressandtomovecursortoselectthesystemyouneedtotest,presstheENTERkeyintothenextscreenaftermakeselection.SelectDME（enginecontrolsystem）,andgetintothepromptinterfaceofdiagnosticconjunction,thedisplayshows:,Thefirstarray38and16showthe38feetdiagnosticsocketandthe16feetdiagnosticsocket.Thenumbersoppositetothediagnosticfeetarethefeetthattheshortingharnessesneedtoshort,thecolormeansthecolorofthediagnosticshortingharness.Selectthediagnosticfeetinresponsetothecartype,pressENTERkey,getintotheconnectingstate,thedisplayshows:,Makesureeachoperationwithoutanyerror,pressconfirmationkey,thesystemstartslink,andthescreenshows:Ifappearamistakeintheconjunction,itwillshowaconjunctionfailure:Check,ifwithoutanymistake,pressexitkeytosendbacktheuppergradecatalogue,pressconfirmationkeyagaintorestart,thescreenshows:,Conjunctionforthesecondtimesuccessfully,thescreenwillshowtheinformation:Getintotheenginediagnosticcatalogue,thescreenshows:,Select“Datastream”,youcanseeallthedatastreamofengine.Theunderneathisafewinformationwhichlistaccordingtothecarcondition.,Withthesedata,wecanknowtheenginelikethepalmofourhand.Now,weanalyzetheworkingconditionoftheengineaccordingthesedata.Theenginealreadyarrivesnormalworktemperature,beplacedintoopenloopstate.Computercontroltherunningaccordingtoeachsensorsignalatthistime.Thepulsedurationofinjectionisabout5ms,thenormalpulsedurationofidleinjectionshouldbeabout3ms.Thisshowsthemixtureistoorichthatresultsinemittingblacksmoke.Injectiontimeisrelatedtoenginetemperature,enginespeed,throttlepositionandairflow.Theenginetemperatureandenginespeedisnormal.Whenthethrottleisat0position,theairflowisabout15-20kg/h,thisismainlybecausethethrottleleaksorthecircuitformairflowmetertoECUbreaksdown.Ifthethrottleleaks,theidlespeedwillgoup,buttheidlespeedisnormal.Forthisreason,thisitemexpels.Therefore,theonlyproblemistheairflowmeter.Iftheairflowmeterisbrokendown,readthefaultcodefirst.SelectcatalogueClause3,readthecurrentfaultcode,thedisplayshows:,After“pleasewait”isthefaultcode,whichdemonstratestheairflowmeterbrokendown.Faultcodeisstillkeptinthecomputerafterclearingoffault,thecodeshouldbecleared.Presstheexitkeytoreturntotheuppergradecatalogue,selectClause4“clearfaultcode”,pressconfirmationkeytostartandthescreenshows:,Pressconfirmationkeytoreturntotheuppergradecatalogueaftercodeclearance,pressexitkeytoexiteachsystem.Themalfunctionofenginehasbeenremoved.,7.3AutomobileScope,Inthischapter,wetakeESCORT-328Cautomobilescopeasanexampletoexplainhowtooperatethemenuofanautomobilescope.,Pushthepowerbuttom“”,thedisplaywillshowsthemainmenu.Pushbuttomtoselectmenu,ifyouselecttheAUTOSCOPEmenu,asubmenuwillappearatthebottom:,1.ABSSENSOREnterABSSENsubmenu,thescreenwillgetintosecondaryselection.,Thenselectthetypeofsensor.,2.ALTERNATOREnterALTERNATORmenu,thescreenwillshowasubmenu:,7.4EngineAnalyzer,Engineanalyzeristhemodernhi-techinstrument,testinganddiagnosingtheworkingstatueandparametersofenginesystems.TheAmericacompanyproductMT3000Aisbrieflyintroducedinthischapter.,7.4.2HowtoOperateMT3000AEngineAnalyzer,7.5Automobile4-WheelAligner,FourWheelAlignmentisnecessaryontodaysdesignvehicles.CorrectAlignmentisvitaltovehiclecontrol,notonlyforsafetybutalsoforcomfortwhendrivingavehicle.Theminimumeffectofincorrectalignment,thrustlineandwornordamagedsuspensioncomponentswouldbeincorrectsteeringwheelposition,rapidtirewear.Themaximumeffectoftheseconditionswouldbepersonalinjuryandpropertydamage.,4-WheelAligner（seefigure7-36）isaprecisionmeasurementinstrumentdesignedtomeasurethewheelalignmentparametersandcomparethemwiththespecificationsprovidedbyvehiclemanufacturer.Italsogivesinstructionstotheuserforperformingcorrespondingadjustmentssoastogetthebeststeeringperformanceandreducetirewear.The4-WheelAlignercanbeusedtomeasurethemostwheelalignmentparameters,suchasfrontwheeltoe-in,frontwheelcamber,caster,Kingpininclination,thrustangleetc.Inthefollowingwehavetriedtousebasicsimpletermsandexplanations.,1.Camber(外倾角)Camberistheinwardoroutwardtiltofthewheelatthetop.Ifthetopofthewheelisleaningoutfromthecenterofthecar,thenthecamberispositive,ifitsleaningin,thenthecamberisnegative(figure7-37).,2.Caster(主销后倾角)Thisreferstotheangleofthesteeringaxisinrelationtoanimaginaryverticallinethroughthecenterofthewheelwhenviewedfromtheside.“Positivecaster”isthetermusedwhentheverticallineistiltedbacktowardtherear.Ifitstiltedforward,wecallit“negativecaster”.Seefigure7-38.,3.Toe(前束)Thetoemeasurementisthedifferenceinthedistancebetweenthefrontofthetiresandthebackofthetires.Seefigure7-39.Toe-inmeansthatthefrontsofthetiresareclosertoeachotherthantherearsofthetires.Toe-outisexactlytheopposite,4SteeringAxisInclination(SAI)(转向轴线内倾)SAIisthemeasurementindegreesofthesteeringpivotlinewhenviewedfromthefrontofthevehicle.Seefigure7-40.SAIisalsocalledKPI(KingPinInclination).,5.IncludedAngle(包容角)IncludedangleistheangleformedbetweentheSAIandthecamber.See7-41.,6ScrubRadius(摩擦弧径)ScrubradiusisthedistancebetweenwheretheSAIintersectsthegroundandthecenterofthetire.Seefigure7-42.,7.RidingHeight(车辆离地间隙)Ridingheightismeasuredfromtherockerpaneltotheground.See7-43,8.SetBack(车轮滞后)Setbackiswhenonefrontwheelissetfurthe