前(qian)橋(qiao)總成安裝在車(che)身(shen)的后半(ban)(ban)部分 用于(yu)撐(cheng)起(qi)車(che)身(shen) 包括 前(qian)橋(qiao)殼、半(ban)(ban)軸、制(zhi)動器總成、差減速器總成 帶(dai)動輪(lun)胎的運(yun)轉。
我們經常提及汽車的前橋和后橋,那你清楚前橋到底位于車的哪個部位嗎?
汽車的前橋分布在汽車的前段,它將車的前部與兩個輪胎連接起來,同時也承擔著傳遞車架與前輪之間各向作用力,以及其所產生的彎矩和轉矩的作用。汽車前橋的主要組成部分分為前軸、輪轂組合、主銷、節臂、轉向節、制動器總成、橫拉桿總成等等。
前橋對于汽車結構來說發揮著重要作用,具體如下:
1、汽車前橋不僅對車輛前端起到承載的作用,而且具有較強的相對抗對沖擊力。
2、對于車輛的轉向、制動、行走,汽車前橋也發揮了一定的作用。
前橋是車輛的重要部件,平日車主在行車時要注意不要超載行駛,以免造成損壞,同時要定期檢查和維修前橋,出現故障及時修理或更換。
汽(qi)車前(qian)(qian)(qian)(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)(qiao)主要是(shi)通過(guo)離合器變速箱將發動(dong)機動(dong)力減速并增加扭矩(ju),再通過(guo)前(qian)(qian)(qian)(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)(qiao)總成傳遞(di)給動(dong)力的(de)(de)最終(zhong)輸出輪(lun)(lun)。同時(shi),前(qian)(qian)(qian)(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)還起(qi)到(dao)(dao)轉向的(de)(de)作(zuo)用(yong)(yong)(yong)。此外(wai),前(qian)(qian)(qian)(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)(qiao)還起(qi)到(dao)(dao)承(cheng)(cheng)載整(zheng)車重量的(de)(de)作(zuo)用(yong)(yong)(yong),即車身(shen)和(he)(he)前(qian)(qian)(qian)(qian)(qian)(qian)(qian)懸架(jia)(jia)通過(guo)連桿機構與前(qian)(qian)(qian)(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)(qiao)總成連接,起(qi)到(dao)(dao)承(cheng)(cheng)載的(de)(de)作(zuo)用(yong)(yong)(yong)。如(ru)(ru)果前(qian)(qian)(qian)(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)(qiao)不(bu)是(shi)驅(qu)(qu)動(dong)橋(qiao)(qiao)(qiao)(qiao),后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)就(jiu)是(shi)驅(qu)(qu)動(dong)橋(qiao)(qiao)(qiao)(qiao)。此時(shi)除(chu)了承(cheng)(cheng)載功能外(wai),還起(qi)到(dao)(dao)驅(qu)(qu)動(dong)、減速、差(cha)速的(de)(de)作(zuo)用(yong)(yong)(yong)。在(zai)四輪(lun)(lun)驅(qu)(qu)動(dong)的(de)(de)情況下,通常在(zai)后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)前(qian)(qian)(qian)(qian)(qian)(qian)(qian)面(mian)有一個(ge)分(fen)動(dong)箱。后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)分(fen)為整(zheng)體橋(qiao)(qiao)(qiao)(qiao)和(he)(he)半(ban)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)。橋(qiao)(qiao)(qiao)(qiao)梁采用(yong)(yong)(yong)非(fei)獨立懸掛,如(ru)(ru)鋼板(ban)彈(dan)簧懸掛;半(ban)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)采用(yong)(yong)(yong)獨立懸架(jia)(jia),如(ru)(ru)麥弗遜懸架(jia)(jia)。前(qian)(qian)(qian)(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)和(he)(he)后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)之間有著本質的(de)(de)區別,不(bu)僅(jin)僅(jin)是(shi)在(zai)外(wai)觀上。后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)指(zhi)的(de)(de)是(shi)汽(qi)車后(hou)部的(de)(de)車軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)。如(ru)(ru)果車輛(liang)由前(qian)(qian)(qian)(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)驅(qu)(qu)動(dong),那么(me)后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)只是(shi)一個(ge)從動(dong)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou),只起(qi)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)承(cheng)(cheng)的(de)(de)作(zuo)用(yong)(yong)(yong)。相反,如(ru)(ru)果前(qian)(qian)(qian)(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)(qiao)不(bu)是(shi)驅(qu)(qu)動(dong)橋(qiao)(qiao)(qiao)(qiao),那么(me)后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)就(jiu)是(shi)驅(qu)(qu)動(dong)橋(qiao)(qiao)(qiao)(qiao)。前(qian)(qian)(qian)(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)除(chu)了承(cheng)(cheng)載功能外(wai),還起(qi)到(dao)(dao)驅(qu)(qu)動(dong)、減速和(he)(he)差(cha)速器的(de)(de)作(zuo)用(yong)(yong)(yong)。在(zai)四輪(lun)(lun)驅(qu)(qu)動(dong)的(de)(de)情況下,通常在(zai)后(hou)輪(lun)(lun)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)前(qian)(qian)(qian)(qian)(qian)(qian)(qian)面(mian)有一個(ge)分(fen)動(dong)箱。
外形與動力方面的(de)(de)參數如上(shang)表所示,由于此(ci)次將在國內上(shang)市的(de)(de)車型(xing)沿(yan)用了北美的第四代(dai)(而非年初在底特律車(che)(che)展亮相的(de)(de)采用全新平臺的(de)(de)第五代(dai)2008款道奇Caravan車(che)(che)型),因此相對老舊(jiu)平臺帶(dai)來的(de)(de)發動機以(yi)及變速箱的相對陳舊(jiu)可說是此次進入國內車(che)型(xing)的最大遺憾。不過實際上(shang)與之(zhi)互(hu)為競爭(zheng)關(guan)系(xi)的GL8在北美已經(jing)是停產車(che)型(xing),同樣的軟肋也存在于對手身(shen)上(shang)。
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