概述目前(qian)(qian)(qian)(qian)，2轎車的4輪(lun)(lun)(lun)(lun)(lun)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)裝(zhuang)置已(yi)經(jing)引進了電子(zi)(zi)(zi)計(ji)算機(ji)(ji)控(kong)制系(xi)統，四(si)輪(lun)(lun)(lun)(lun)(lun)一帶(dai) 市(shi)場，當前(qian)(qian)(qian)(qian)輪(lun)(lun)(lun)(lun)(lun)或后(hou)(hou)輪(lun)(lun)(lun)(lun)(lun)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時(shi)(shi)(shi)，車子(zi)(zi)(zi)隨時(shi)(shi)(shi)根據(ju)路面(mian)(mian)狀(zhuang)態的反饋信息(xi)分(fen)配(pei)前(qian)(qian)(qian)(qian)后(hou)(hou)輪(lun)(lun)(lun)(lun)(lun)子(zi)(zi)(zi)的動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)力，臨滄四(si)輪(lun)(lun)(lun)(lun)(lun)一帶(dai)，變為4輪(lun)(lun)(lun)(lun)(lun)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。4輪(lun)(lun)(lun)(lun)(lun)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)又(you)可(ke)以(yi)細(xi)分(fen)成(cheng)4種(zhong)(zhong)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)模式(shi)：全(quan)(quan)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)（Full－Time）、分(fen)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)（Part-Time）、適(shi)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)（Real－Time）和(he)分(fen)時(shi)(shi)(shi)/適(shi)時(shi)(shi)(shi)混和(he)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。全(quan)(quan)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)全(quan)(quan)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)（Full－Time） 全(quan)(quan)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的特點就(jiu)是(shi)無論(lun)怎么樣，永遠都保(bao)持四(si)輪(lun)(lun)(lun)(lun)(lun)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)模式(shi)，求購四(si)輪(lun)(lun)(lun)(lun)(lun)一帶(dai)，這種(zhong)(zhong)傳動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)系(xi)統都是(shi)不(bu)(bu)需要駕駛(shi)人選擇操(cao)作的。行駛(shi)的時(shi)(shi)(shi)將(jiang)發動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)輸出扭(niu)(niu)矩(ju)按50∶50 設(she)定在前(qian)(qian)(qian)(qian)后(hou)(hou)輪(lun)(lun)(lun)(lun)(lun)上，四(si)輪(lun)(lun)(lun)(lun)(lun)一帶(dai)圖紙，使前(qian)(qian)(qian)(qian)后(hou)(hou)排車輪(lun)(lun)(lun)(lun)(lun)保(bao)持等量的扭(niu)(niu)矩(ju)，遇到(dao)特別路面(mian)(mian)的時(shi)(shi)(shi)候就(jiu)可(ke)以(yi)自動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)將(jiang)不(bu)(bu)同的扭(niu)(niu)距分(fen)配(pei)到(dao)各(ge)個輪(lun)(lun)(lun)(lun)(lun)子(zi)(zi)(zi)上面(mian)(mian)。全(quan)(quan)時(shi)(shi)(shi)驅(qu)(qu)(qu)(qu)(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)系(xi)統具有良好的駕駛(shi)操(cao)控(kong)性(xing)和(he)行駛(shi)循跡性(xing)，不(bu)(bu)過缺(que)點也是(shi)很明顯的，那就(jiu)是(shi)比較廢(fei)油，經(jing)濟性(xing)不(bu)(bu)夠好，而(er)且(qie)車輛(liang)沒(mei)有任何裝(zhuang)置來(lai)控(kong)制輪(lun)(lun)(lun)(lun)(lun)胎轉速的差異，一旦一個輪(lun)(lun)(lun)(lun)(lun)胎離開地(di)面(mian)(mian)就(jiu)有可(ke)能(neng)讓(rang)你無法前(qian)(qian)(qian)(qian)進。

首(shou)先它可以降(jiang)低轎車的(de)(de)成本(ben)，這也(ye)是(shi)為(wei)什驅(qu)動(dong)輪圖(tu)冊么(me)現今(jin)許多汽(qi)車制(zhi)造(zao)廠商(shang)都(dou)采用(yong)(yong)這種驅(qu)動(dong)系統(tong)的(de)(de)原因。前(qian)輪驅(qu)動(dong)(FWD)在(zai)制(zhi)造(zao)和安裝(zhuang)方面(mian)都(dou)比后(hou)輪驅(qu)動(dong)(RWD)便(bian)宜很多。它沒有(you)通過(guo)駕駛艙下面(mian)的(de)(de)驅(qu)動(dong)軸，也(ye)不用(yong)(yong)制(zhi)造(zao)后(hou)橋(qiao)殼，變速(su)器(qi)和差速(su)器(qi)被裝(zhuang)配在(zai)一(yi)個殼體中，這樣(yang)所需的(de)(de)零部(bu)件就更少。這種前(qian)輪驅(qu)動(dong)系統(tong)還(huan)可以讓(rang)設計者更方便(bian)的(de)(de)在(zai)汽(qi)車底部(bu)安裝(zhuang)其(qi)他部(bu)件，比如制(zhi)動(dong)系統(tong)，燃油供給系統(tong)和排氣系統(tong)。

減輕(qing)整(zheng)車(che)的(de)重(zhong)量是(shi)前輪(lun)驅(qu)(qu)動(dong)(dong)的(de)另一(yi)個優點。減輕(qing)車(che)重(zhong)可以提高加速(su)性(xing)，制動(dong)(dong)性(xing)和燃油經濟性(xing)。由于前輪(lun)驅(qu)(qu)動(dong)(dong)的(de)汽車(che)的(de)驅(qu)(qu)動(dong)(dong)輪(lun)承(cheng)受著發動(dong)(dong)機和驅(qu)(qu)動(dong)(dong)橋的(de)重(zhong)量，可以增加驅(qu)(qu)動(dong)(dong)輪(lun)的(de)附著力(li)，這對于在濕滑路面上行(xing)駛的(de)汽車(che)將會有很大的(de)幫助。

前(qian)輪(lun)驅動的的優點還在于可以擁有(you)大(da)(da)的室(shi)(shi)內空(kong)間，駕駛室(shi)(shi)內不(bu)會(hui)因(yin)為有(you)驅動軸通(tong)過而(er)有(you)一(yi)個大(da)(da)的凸起。看看本田思(si)域(Civic)，你(ni)就(jiu)會(hui)發(fa)現這種小車(che)也(ye)可以擁有(you)許(xu)多轎(jiao)車(che)無(wu)法比擬的后座空(kong)間，原因(yin)就(jiu)是有(you)了(le)一(yi)個平整的底板，同時(shi)，沒有(you)了(le)后差(cha)速器，行李(li)箱的空(kong)間也(ye)會(hui)得到增大(da)(da)。