汽車(chē)制動(dòng)系統(tǒng)的日常維修保養(yǎng)畢業(yè)論文外文翻譯

1、1RoutinebrakesystemmaintenanceThebrakingsystemisthemostimptantsystemonacar.Ifthebrakesdontwkproperlytheresultcanbedisastrous.Sothegoodbrakesareessentialfsafety.Therearetwocompletelyindependentbrakingsystemsonacar.Oneisth

2、eservicebraketheotherisparkingbrake.Theservicebrakeactstoslowstopholdthevehicleduringnmaldriving.Theyarefootoperatedbythedriverdepressingreleasingthebrakepedal.Theparkingbrakespurposesaretoholdacarstationarywhileitisunat

3、tendedtokeepthecarfromrollingonunleveledground.Itisalsocalledthehbrake.Basicallyallcarbrakesarefrictionbrakes.Whenthedriverappliesthebrakethecontroldevicewillfcebrakeshoespadsagainsttherotatingbrakedrumsdiscsatwheels.Fri

4、ctionbetweentheshoespadsthedrumsdisksthenslowsstopsthewheelssothatthecarisbraked.DiscbrakeDiscbrakesareusedonthefrontwheelsofmostcarsonallfourwheelsonmanycars.Themaincomponentsofadiscbrakearethebrakepadsthecaliperwhichco

5、ntainsapistontherotwhichismountedtothehub.Thediscbrakeisalotlikethebrakesonabicycle.Bicyclebrakeshaveacaliperwhichsqueezesthebrakepadsagainstthewheel.Inadiscbrakethebrakepadssqueezetherotinsteadofthewheelthefceistransmit

6、tedhydraulicallyinsteadofthroughacable.Frictionbetweenthepadsthediscslowsthediscdown.Amovingcarhasacertainamountofkiicenergythebrakeshavetoremovethisenergyfromthecarindertostopit.Thebrakesconvertthekiicenergytoheatgenera

7、tedbythefrictionbetweenthepadsthediscsothecarstops.DrumbrakeSoifdiskbrakesaresogreathowcomewestillhavecarswithdrumbrakesThereasoniscost.Whileallmostvehiclesfmanyyearshavediskbrakesonthefrontwheelsdrumbrakesarecheapertopr

8、oduceftherearwheels.DrumbrakeisshowninFig.Drumbrakesconsistofabackingplatebrakeshoesbrakedrumwheelcylinderreturnspringsanautomaticselfadjustingsystem.Whenyouapplythebrakesthewheelcylinderpushesthebrakeshoesintocontactwit

9、hthemachinedsurfaceontheinsideofthedrum.Whenthepressureisreleasedreturnspringspulltheshoesbacktotheirrestposition.Asthebrakeliningsweartheshoesmusttravelagreaterdistancetoreachthedrum.Whenthedistancereachesacertainpointa

10、selfadjustingmechanismautomaticallyreactsbyadjustingtherestpositionoftheshoessothattheyareclosertothedrum.HydraulicBrakeSystems3operationofthe.Inadditionthepopularizationofbrakeshieldthebrakepadofrotatingthecontactsurfac

11、eismultiblockhardlook.Asftherearwheelwithdiscbrakeitishiddenisdifficulttocomprehendtheappearance.Typicallytheonlysystemintheapparentleakwewillfocusoncheckingbrakefluidsealing.Thecomprehensivesystemofinspectionincludingth

12、etraditionalstaticchecking(thatistofindleaksinsitustatic)dynamicchecks(iecheckthesealduringbraking).Inanycasewhenthevehiclebrakingsystemtomaintainupto48000kmdrivingrangetheyneedthevehiclesbrakingsystemtoconductacomprehen

13、siveprofessionalmaintenanceBrakerotatingbodyofminscratchesdonotcauseillness.Butsincethefasteningnuttighteningfcethicknessofinequalityunevenbrakerotatingbodyrotationcausedbyexcessiveweartearwillseriouslyaffectthebrakingpe

14、rfmance.Toreduceweightmanyrotatingbodysizeusingunconventionalstructurewhichisdifficulttomeetsomeofthemachinetoolclampingthebasicrequirements.Ifyoufindarotatingbodyhasbeenprocessedthenfollowthesameaxleofthesecondrotatingb

15、odyisonlythesizeofitsreplacement.Intheyyoucanonlyreplacearotatingbodybuttogetthebestbalancebetweenbrakingeffecttheproposedreplacementwithtwoonthesameaxlerotatingbody.Theproposalalsoappliestovehiclesduringbrakingbrakecali

16、perpistonthroughtheexperiencebackmovementwecancompletethekeyfeaturesoftheautomaticbrakecalipersinspection.IfthebrakecaliperpistonbackpositionisunsoundpleasereplaceanewbrakecaliperIfyouwanttodisgefillingbrakefluidmakesure

17、reliefvalvecanbenmallyopenifthereliefvalvesettingreplacethenewThebrakecaliper.Iftheasbestosliningshavewn3.175mmthistimeevenunderlightloadingthesecurityofdrivingrangehasalsobeenverylimited.Alsoifneededatthistimeofhighload

18、brakethewearliningweakbrakingfcewillmakethetrafficsafetycompromised.Somereardiscbrakereardriverotarybodywithacapthecapbodyalsoactsasarotarybrakedrum.Therearemanycarownersoftenoverlooktheparkingbrakewillcancelthedirectdri

19、vevehiclestherotatingbodythebrakeshoesindirectmetalmetalfrictiontheresultisboundtocausearotatingbodybrakepadsbrakeshoesofseriousweartear.譯文：譯文：汽車(chē)制動(dòng)系統(tǒng)的日常維修保養(yǎng)汽車(chē)制動(dòng)系統(tǒng)的日常維修保養(yǎng)制動(dòng)系統(tǒng)是汽車(chē)上最重要的系統(tǒng)。如果制動(dòng)系統(tǒng)不能正常工作，后果不堪設(shè)想。因此良好的制動(dòng)系統(tǒng)是安全所必需的