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1、外文資料外文資料原文原文ClutchCommonProblemsFromthe1950stothe1970syoucouldcountongettingbetween5000070000milesfromyourcarsclutch.Clutchescannowlastfmethan80000milesifyouusethemgentlymaintainthemwell.Ifnotcaredfclutchescanstarttobrea
2、kdownat35000miles.Trucksthatareconsistentlyoverloadedthatfrequentlytowheavyloadscanalsohaveproblemswithrelativelynewclutches.Themostcommonproblemwithclutchesisthatthefrictionmaterialonthediscwearsout.Thefrictionmaterialo
3、naclutchdiscisverysimilartothefrictionmaterialonthepadsofadiscbraketheshoesofadrumbrakeafterawhileitwearsaway.Whenmostallofthefrictionmaterialisgonetheclutchwillstarttoslipeventuallyitwonttransmitanypowerfromtheenginetot
4、hewheels.Theclutchonlywearswhiletheclutchdisctheflywheelarespinningatdifferentspeeds.Whentheyarelockedtogetherthefrictionmaterialisheldtightlyagainsttheflywheeltheyspininsync.Itsonlywhentheclutchdiscisslippingagainstthef
5、lywheelthatwearingoccurs.Soifyouarethetypeofdriverwhoslipstheclutchalotyoullwearoutyourclutchalotfaster.Sometimestheproblemisnotwithslippingbutwithsticking.Ifyourclutchwontreleaseproperlyitwillcontinuetoturntheinputshaft
6、.Thiscancausegrindingcompletelypreventyourcarfromgoingintogear.Somecommonreasonsaclutchmaystickare:BrokenstretchedclutchcableThecableneedstherightamountoftensiontopushpulleffectively.Leakydefectiveslavemasterclutchcylind
7、ersLeakskeepthecylindersfrombuildingthenecessaryamountofpressure.AirinthehydrauliclineAiraffectsthehydraulicsbytakingupspacethefluidneedstobuildpressure.MisadjustedlinkageWhenyourfoothitsthepedalthelinkagetransmitsthewro
8、ngamountoffce.MismatchedclutchcomponentsNotallaftermarketpartswkwithyour1外文資料外文資料原文原文EuropeanvehiclerecyclinglawsaremakingcarmakersthatsellcarsinEuropetakemeresponsibilityftheeffecttheirvehiclesHondaMitsubishiarethelates
9、ttodevelopnewmaterials.Recyclingthemetalthatmakesupmajityofthevehicleisnotthehardestperttheplasticsplasticspresentafargreaterchallenge.Interisposeaparticularrecyclingproblemastheyusealotofplastics.Hondahasdevelopedaplant
10、basedfabricwithexcellentdurabilityresistancetosunlightfuseasurfacematerialinautomobileinteris.Biofabricsarethemostlikelysolutionastheyarederivedfromplantsthatabsbcarbondioxideadtheygrow.Whenvehicleisscrappedthefabricsinc
11、ineratedonlysomeofthereleasedcarbondioxidehascomefromafossilsource.Despitethisbenefitplantbasedfabricshavenotyetbeenusedcommerciallyfautomobileinteris.Interiqualityistooimptanttotakeriskswiththerehavebeenconcernsaboutthe
12、limiteddurabilityaestheticsofbiomaterials.Hondasaysithasafabricthatcanovercometheseissuesachievingasoftsmoothmaterialappropriatefthesurfaceofautomobileinteris.Ithashighdurabilityitscoldoesnotfadeafterprolongedexposuretos
13、unlight.Hondawillusethematerialfseatstheinterisurfaceofdosroofliningsfflomats.Seriesproductionisstillsomewayoffhowever.Thefirmwillinstallthebiofabricinterisin2009inafuelcellvehiclethenexptheapplication.Thebiofabric’sbasi
14、cmaterialisapolyestercalledpolypropyleneterephthalate(PPT).PPTisproducedthroughthepolymerizationofpropaneiolwhichisproducedfromcnterephthalicacidapetroleumbasedcomponent.Indertoimprovethefabric’sstabilityHondahasapplieda
15、multithreadstructurefthefiber.“Thefiberisveryflexibleachievingunprecedentedaestheticproperties”saysHonda.Thebiofabricdoesnotrequirechangestoexistingfabricproductionprocessesissuitablefmassproduction.Usingitinsteadofthetr
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