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前橋總成簡介

前橋(qiao)總(zong)(zong)成(cheng)安(an)裝在車身的(de)后半部(bu)分(fen) 用于撐(cheng)起車身 包(bao)括(kuo) 前橋(qiao)殼、半軸、制動器(qi)總(zong)(zong)成(cheng)、差減速器(qi)總(zong)(zong)成(cheng) 帶(dai)動輪胎的(de)運轉。

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。

前橋總成的作用

汽(qi)(qi)車(che)(che)前(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)主要是(shi)通過離合器變(bian)速(su)箱(xiang)將(jiang)發動(dong)(dong)(dong)(dong)(dong)(dong)機動(dong)(dong)(dong)(dong)(dong)(dong)力減(jian)(jian)速(su)并增(zeng)加扭矩，再通過前(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)總成傳(chuan)遞給動(dong)(dong)(dong)(dong)(dong)(dong)力的(de)(de)(de)(de)最終輸出輪(lun)。同時(shi)，前(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)還起(qi)到(dao)轉(zhuan)向(xiang)的(de)(de)(de)(de)作(zuo)用(yong)(yong)。此外(wai)，前(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)還起(qi)到(dao)承(cheng)載整(zheng)(zheng)車(che)(che)重量的(de)(de)(de)(de)作(zuo)用(yong)(yong)，即車(che)(che)身和(he)前(qian)(qian)(qian)(qian)懸架(jia)通過連桿機構與前(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)總成連接，起(qi)到(dao)承(cheng)載的(de)(de)(de)(de)作(zuo)用(yong)(yong)。如(ru)(ru)果(guo)前(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)不(bu)是(shi)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)橋(qiao)(qiao)(qiao)，后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)就(jiu)是(shi)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)橋(qiao)(qiao)(qiao)。此時(shi)除了承(cheng)載功能外(wai)，還起(qi)到(dao)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)、減(jian)(jian)速(su)、差速(su)的(de)(de)(de)(de)作(zuo)用(yong)(yong)。在四(si)輪(lun)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)情(qing)況下(xia)(xia)，通常在后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)前(qian)(qian)(qian)(qian)面(mian)有(you)一(yi)個(ge)分(fen)動(dong)(dong)(dong)(dong)(dong)(dong)箱(xiang)。后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)分(fen)為整(zheng)(zheng)體橋(qiao)(qiao)(qiao)和(he)半軸(zhou)(zhou)(zhou)(zhou)。橋(qiao)(qiao)(qiao)梁采用(yong)(yong)非獨立懸掛，如(ru)(ru)鋼板(ban)彈簧懸掛；半軸(zhou)(zhou)(zhou)(zhou)采用(yong)(yong)獨立懸架(jia)，如(ru)(ru)麥弗遜(xun)懸架(jia)。前(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)和(he)后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)之間有(you)著本質的(de)(de)(de)(de)區別，不(bu)僅僅是(shi)在外(wai)觀上。后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)指的(de)(de)(de)(de)是(shi)汽(qi)(qi)車(che)(che)后(hou)(hou)(hou)(hou)部的(de)(de)(de)(de)車(che)(che)軸(zhou)(zhou)(zhou)(zhou)。如(ru)(ru)果(guo)車(che)(che)輛由前(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)，那么后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)只(zhi)是(shi)一(yi)個(ge)從動(dong)(dong)(dong)(dong)(dong)(dong)軸(zhou)(zhou)(zhou)(zhou)，只(zhi)起(qi)軸(zhou)(zhou)(zhou)(zhou)承(cheng)的(de)(de)(de)(de)作(zuo)用(yong)(yong)。相反(fan)，如(ru)(ru)果(guo)前(qian)(qian)(qian)(qian)橋(qiao)(qiao)(qiao)不(bu)是(shi)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)橋(qiao)(qiao)(qiao)，那么后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)就(jiu)是(shi)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)橋(qiao)(qiao)(qiao)。前(qian)(qian)(qian)(qian)軸(zhou)(zhou)(zhou)(zhou)除了承(cheng)載功能外(wai)，還起(qi)到(dao)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)、減(jian)(jian)速(su)和(he)差速(su)器的(de)(de)(de)(de)作(zuo)用(yong)(yong)。在四(si)輪(lun)驅(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)情(qing)況下(xia)(xia)，通常在后(hou)(hou)(hou)(hou)輪(lun)軸(zhou)(zhou)(zhou)(zhou)前(qian)(qian)(qian)(qian)面(mian)有(you)一(yi)個(ge)分(fen)動(dong)(dong)(dong)(dong)(dong)(dong)箱(xiang)。

寶馬328Li簡介

寶馬328Li在車頭部分并無明顯配置差異，發動機蓋自大燈上沿開始以楔形向上延伸至前風擋下沿，多條棱線的設計讓新發動機蓋看上去更具動感。加大尺寸的前進氣格柵是這一代3系的顯著特征，此外與格柵緊密相連的全新頭燈組更具侵略性，。同屬新3系獨有的霧燈區域鍍鉻裝飾條被黑色膠帶牢牢遮擋，但整體的線條被明顯地顯露出來。

寶馬328Li的側面可以比較明顯地看出和海外版3系不同的是，后門的尺寸有較為明顯的增加痕跡，側裙后部的線條更趨于平直，這也就意味著它將是一輛地地道道的國產新3系轎車，它將為中國消費者提供更為充裕的后排乘坐空間。

寶馬328Li將會搭載全新4缸渦輪增壓發動機，最大功率為240匹馬力，匹配全新8速自動變速器，新變速箱的前六個擋位采用1：1的齒輪傳動比，最后兩個擋位為超比擋，可以在高速巡航時幫助降低油耗。