最佳答案

速騰和福克斯是A級車中的兩大競爭車型，其中一個賣點就是都采用了獨立的后懸掛。速騰的叫“多連桿后懸掛”，福克斯的叫“SLAControlBlade后懸掛”。經過對比，發現兩個懸掛有很多相似之處。FordControlBladeSuspensionAlotofattentionandmarketinghasbeencomingoutofFordrecentlyabouttheirnewControlBlade™rearsuspension.DetailsandengineeringfactsarepredictablysketchybuttheglossymarketingbrochureswilltellyouthisrevolutioninrearsuspensionwillmakeyourFordFocushandlebetter,griptheroadbetter,andbrakebetterthaneverythingelseontheroad.Itwarrantssomeinvestigationwhentheymakeclaimslikethat,butitturnsoutwhattheymeanis"we'vegotanewsuspensionsystem",andnotmuchelse.Itactuallystartedoutitslifesometimearound1998inFordofAustraliaandIbelieveHoldenhadsomethingtodowithittoo.Sincethenitsbecomefarmoremainstream.So"ControlBlade"isthesnappymarketingnamethatFordusetodescribetheirnewsystem.Itsoundsgood,looksgoodonpaper,andhasanauraof21stcentury-nessaboutit."Blade".Ooh.Cool.Therealityisn'tquitesocoolthough-controlbladeisbasicallyanevolutionoftrailing-armsuspension.HoweveritsstillaninterestingdevelopmentanditdoesservethepurposeforwhichForddesignedit.TheprimarypurposeofControlBladesuspensionistoincreasetheinteriorspaceavailableinthevehicle.Mostsuspensionsystemsusedindailydrivershavestruttowersfrontandrear.Inthefrontit'snotreallyaproblem,butintherearitimpedesonboot(ortrunk)space.Fordwantedtogivemorespaceinthebackandneededtofindagoodwaytoremoveorreducethesizeofthestruttowers.TheresultistheirControlBladesystemwhichinessenceseparatestheshockabsorberfromthesprings.Todothis,Fordneededtouseatrailing-armtypesuspensionsothattheydidn'thaveswingarmsupunderthewheelarches.Thespringswereshortenedandmovedinboardandunderneath.Inonevariation,theshockabsorbersstillsitverticallybutthespacetheytakeupnowishugelyreducedbecausetheynolongerhavethecoilspringsaroundtheoutside.Inthesecondvariationtheshockabsorberisasubminiatureunitmountedinboardofthespringsunderneaththevehicle.I'mnotsureofthemeritsofthesuper-shortshockabsorberbutFordseemtothinkitworks.Thecontrolbladesthemselvesarebasicallythetrailingarmswhichgivelateralsupportandprovidetheverticalpivotpointfortheentireunit.TheFordspielsaysthisaboutControlBlade："Ithasthekeyfunctionofpromotingrideandreducingroadnoisetransmission,whileprovidingthefreedomtoletthelaterallinksdefinetoeandcamberbyabsorbinganyrearwardforcesandallowingtherestofthesuspensiontodoit'sjobuninterrupted.EffectivelyisolatingthehandlingcomponentsofthenewIRSfromtheroadnoiseandimpactharshnesscomponentsofthesuspension.".InEnglish?Itmeansbetterhandlingandlessroadnoise.Lookingatthebasicdesignit'snotdifficulttoseethatthissystemhasamuchlowercentreofgravitythanaMacphersonstrut(forexample).LowerC-of-Ginavehicleisalwaysagoodthing.ThegeometryoftheControlBladesystemalsoprovidessignificant'anti-dive'underbrakingforce,whichmeansathecarbodywilldivelesswhenyoujumponthebrakeswhichinturntranslatesintomorewell-behavedbrakingresponse.LowerC-of-G,lessrollandlesspitchduringbrakingalladduptobetterhandling,althouthwhethertheaveragedriverwouldnoticeornotisadifferentmatter.Anotherfunctionofthissystemisthatthey'veseparatedthetwobasicfunctionsofsuspension.Withthespringsandshockabsorbersbeingmountedindifferentplaces,Fordhavemanagedtooptimisethefunctionofthesecomponents.It'ssimilarinconcepttowhatBMWdidwiththeteleleverfrontsuspensiononmotorbikes-separatingbrakingfromsuspensionforces,onlyinthecontrolbladesystem,itseparatesthespringingsupportofthesuspensionfromtheshockreducingfunctionsoftheshockabsorbers.而幾乎相同的設計，大眾卻把這套懸掛系統叫做“四連桿獨立懸掛”。大眾的官方說明：緊湊的四連桿后懸架結構是PQ35平臺底盤系統最大的變化之處，改變了PQ34平臺上的半獨立扭桿梁式（目前很多大眾車也在用這個），而以中高檔轎車上采用的獨立式四連桿代替，大大提高整車的舒適性和操控性。四連桿后橋由以下部分組成：三個擺臂(下擺/彈簧臂8,橫拉桿7,上擺臂6)和一個縱向拖臂4組成(看圖對號入座)，每個車輪有一個橫拉桿，能獨立區分縱向和橫向的動力傳遞，在與前懸架完美配合下，使整車具有良好的平穩性和駕駛舒適性。后懸架不但保持著德國車的一貫硬朗，又兼具了良好的乘坐舒適性。懸架幾何結構可產生中性或略帶不足轉向，有利于轉向穩定。

回答者：wlb2116142016-03-14 00:00