外文翻譯--無級(jí)變速器.doc

附錄1譯文無級(jí)變速器的行星齒輪機(jī)構(gòu)采用雙行星齒輪機(jī)構(gòu),行星架上固定有內(nèi)、外行星齒輪和右支架,其中右支架是通過螺栓固定在行星架上,外行星齒輪和齒圈嚙合,內(nèi)行星齒輪和太陽輪嚙合。它們可以實(shí)現(xiàn)前進(jìn)和倒檔。無級(jí)變速機(jī)構(gòu)由金屬傳動(dòng)帶和主、被動(dòng)工作輪組成。金屬傳動(dòng)帶由兩百多個(gè)金屬片和兩組金屬環(huán)組成,每個(gè)金屬片的厚度為1.4mm,在兩側(cè)工作輪擠壓力作用下傳遞動(dòng)力。每組金屬環(huán)由9或12片厚度為0.18mm的帶環(huán)疊合而成,金屬環(huán)的功用是提供預(yù)緊力,在動(dòng)力傳遞過程中,支撐和引導(dǎo)金屬片的運(yùn)動(dòng),有時(shí)承擔(dān)部分轉(zhuǎn)矩的傳遞。主、被動(dòng)工作輪由可動(dòng)和不動(dòng)錐盤兩部分組成?？刂葡到y(tǒng)是用來實(shí)現(xiàn)無級(jí)變速器系統(tǒng)傳動(dòng)比無級(jí)自動(dòng)變化的。在無級(jí)變速器系統(tǒng)中,采用機(jī)-液控制系統(tǒng)或電-液控制系統(tǒng)。它主要由油泵齒輪泵和滾子葉片泵、液壓調(diào)節(jié)閥速比和帶與輪間壓緊力的調(diào)節(jié)、傳感器油門和發(fā)動(dòng)機(jī)轉(zhuǎn)速和主、從工作輪的液壓缸及管道組成,實(shí)現(xiàn)傳動(dòng)無級(jí)變速的調(diào)節(jié)。速比控制、夾緊力控制和起步離合器的控制是無級(jí)變速控制系統(tǒng)的關(guān)鍵。由于無級(jí)變速機(jī)構(gòu)可提供的速比變化范圍為2.60.445左右,不能完全滿足整車傳動(dòng)比變化范圍的要求,故設(shè)有中間減速機(jī)構(gòu)。無級(jí)變速器的變速原理很簡單,但也很巧妙。傳動(dòng)器的主、被動(dòng)工作輪的固定和可動(dòng)兩部分形成V形槽,與金屬傳送帶嚙合。當(dāng)主、被動(dòng)工作輪可動(dòng)部分作軸向移動(dòng)時(shí),改變了傳送帶的回轉(zhuǎn)半徑,從而改變傳動(dòng)比?？蓜?dòng)輪的軸向移動(dòng)是根據(jù)汽車的使用要求,通過液壓控制系統(tǒng)進(jìn)行連續(xù)地調(diào)節(jié),實(shí)現(xiàn)無級(jí)變速傳動(dòng)。附錄2英文參考資料Continuouslyvariabletransmissionofplanetarygearmechanismbasedondoubleplanetarygearmechanismandplanetaryframefixedintheouterplanetgearandrightbracketrightbracketisthroughboltontheplanet,outerplanetgearandgearmeshingandinnerplanetgearandSunwheelgear.Theycanrealizetheforwardandreversegear.MetalV-beltcontinuouslyvariableinstitutionsandmajor,composedofpassivewheel.MetalV-beltiscomposedof200metalandtwometalring,eachsheetmetalthicknessof1.4mm,bothsidesundertheeffectofwheelpressuretransferofpower.Eachsetofmentalringby9or12thethicknessof0.18mmbandsuperimposed,functionistoprovidepre-tighteningforceofmetallicring,intheprocessofpowertransfer,supportandguidethemovementofmetal,sometimesbearpartofthetorquetransfer.ActiveandPassivebymovableandfixedbevel-wheeloftwoparts.Controlsystemisusedforcontinuouslyvariabletransmissionsystemfortransmissionratioofcontinuouslychanging.Inthecourseofcontinuouslyvariabletransmissionsystemusingaircraft-hydrauliccontrolsystemofelectric-hydrauliccontrolsystem.Rollervanepumpanditsmainoilpumpgearpump,hydrauliccontrolvalveratioandzoneandonthecompactionforceregulation,sensors,throttleandenginespeedandfromtherunnerofhydrauliccylinderandpipecompositionandrealizationofdrivingsteplessadjustment.Ratiocontrol,clampingforcecontrolandstartingclutchcontrolisthekeytocontinuouslyvariablecontrolsystem.Duetothecontinuouslyvariableratiorangeoforganizationscanprovideabout2.60.445,cannotmeettherequirementsofvehicletransmissionratioofrangeandaslowdowninthemiddleinstitution.Steplessspeedtransmissionprincipleisverysimple,butitisalsoveryclever.TransmissionmainpassivewheeloffixedandmovableformaV-shapeslotoftwoparts,andmetalconveyormesh.WhentheLordandpassivewheelpartsforaxialmoving,changetheradiusofgyrationoftheconveyorbelt,thuschangingtheratio.