山沟女人一级毛片_色欲精品人妻一区二区三区全部_一区二区三区美女外卖视频_久久久久国色aV免费观看不卡_最新国产对白国语二区

仙桃市四輪一帶_中特工程(在線咨詢)_推土機四輪一帶：

四(si)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)（4 Wheel Drive)主變(bian)速(su)(su)(su)器通(tong)過一(yi)個(ge)輔(fu)助變(bian)速(su)(su)(su)器將(jiang)動(dong)(dong)(dong)(dong)(dong)力(li)傳送到前輪(lun)和后輪(lun). 輔(fu)助變(bian)速(su)(su)(su)器通(tong)常(chang)有(you)三檔(dang)(dang)(dang)選(xuan)擇(ze)； 空(kong)檔(dang)(dang)(dang)，四(si)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)，四(si)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)低(di)檔(dang)(dang)(dang)。空(kong)檔(dang)(dang)(dang)時(shi)，四(si)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)就變(bian)成了(le)兩輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)。四(si)輪(lun)驅(qu)(qu) 動(dong)(dong)(dong)(dong)(dong)適合于惡劣的(de)(de)路(lu)面(mian)駕(jia)(jia)駛(shi)(shi)(shi)，例如(ru)，雨雪(xue)天和多(duo)沙石(shi)路(lu)面(mian)。四(si)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)低(di)檔(dang)(dang)(dang)則適合高難度(du)的(de)(de)越(yue)野駕(jia)(jia)駛(shi)(shi)(shi)。全(quan)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong) (All Wheel Drive)全(quan)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)是四(si)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)的(de)(de)一(yi)種(zhong). 它自動(dong)(dong)(dong)(dong)(dong)將(jiang)發動(dong)(dong)(dong)(dong)(dong) 機提(ti)供的(de)(de) 扭矩分送到前輪(lun)和后輪(lun)，不需要手動(dong)(dong)(dong)(dong)(dong)去調整，也沒有(you)低(di)檔(dang)(dang)(dang)選(xuan)擇(ze)。全(quan)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong) 減低(di)了(le)車輪(lun)打滑的(de)(de)程度(du)，改善了(le)駕(jia)(jia)駛(shi)(shi)(shi)者的(de)(de)控車能力(li)。全(quan)輪(lun)驅(qu)(qu)動(dong)(dong)(dong)(dong)(dong)通(tong)常(chang)是一(yi)種(zhong) 正常(chang)路(lu)面(mian)駕(jia)(jia)駛(shi)(shi)(shi)系統，并不設計用于越(yue)野駕(jia)(jia)駛(shi)(shi)(shi)。

汽車(che)(che)(che)在(zai)(zai)行駛時，電腦利用下述3種傳感器不斷檢測汽車(che)(che)(che)的(de)(de)(de)行駛狀態(tai)，即4個車(che)(che)(che)輪(lun)(lun)的(de)(de)(de)轉速(su)傳感器、汽車(che)(che)(che)的(de)(de)(de)前(qian)(qian)后左右(you)加速(su)度(du)傳感器、發(fa)動(dong)(dong)機轉速(su)傳感器。此(ci)外(wai)，利用轉向(xiang)(xiang)(xiang)盤轉向(xiang)(xiang)(xiang)角傳感器、油門(men)踏板開度(du)傳感器不斷地判斷司機的(de)(de)(de)駕駛意(yi)圖(tu)，按(an)預先給定(ding)的(de)(de)(de)程(cheng)序進(jin)行綜(zong)合控(kong)制。在(zai)(zai)AWD系統中，向(xiang)(xiang)(xiang)前(qian)(qian)后車(che)(che)(che)輪(lun)(lun)的(de)(de)(de)動(dong)(dong)力(li)(li)(li)(li)分(fen)(fen)(fen)(fen)(fen)配(pei)影響到(dao)汽車(che)(che)(che)的(de)(de)(de)行駛性(xing)(xing)能(neng)。如(ru)當汽車(che)(che)(che)向(xiang)(xiang)(xiang)前(qian)(qian)后輪(lun)(lun)驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)的(de)(de)(de)分(fen)(fen)(fen)(fen)(fen)配(pei)比(bi)為0:100時，具有較高的(de)(de)(de)轉向(xiang)(xiang)(xiang)性(xing)(xing)能(neng)和(he)極(ji)限(xian)(xian)行駛性(xing)(xing)能(neng)，當驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)分(fen)(fen)(fen)(fen)(fen)配(pei)比(bi)為50:50時，穩(wen)定(ding)性(xing)(xing)得到(dao)提高，但轉向(xiang)(xiang)(xiang)性(xing)(xing)能(neng)和(he) 極(ji)限(xian)(xian)行駛性(xing)(xing)能(neng)會下降。在(zai)(zai)轉向(xiang)(xiang)(xiang)性(xing)(xing)能(neng)、穩(wen)定(ding)性(xing)(xing)和(he)極(ji)限(xian)(xian)行駛性(xing)(xing)能(neng)之間要獲得良(liang)好平衡(heng)，必須確定(ding)優的(de)(de)(de)前(qian)(qian)后驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)分(fen)(fen)(fen)(fen)(fen)配(pei)系數，理想的(de)(de)(de)分(fen)(fen)(fen)(fen)(fen)配(pei)系數按(an)照不同的(de)(de)(de)路面有所不同，在(zai)(zai)允許強力(li)(li)(li)(li)加速(su)的(de)(de)(de)鋪(pu)裝路面上考慮到(dao)載(zai)荷轉移，以向(xiang)(xiang)(xiang)后輪(lun)(lun)分(fen)(fen)(fen)(fen)(fen)配(pei)較大驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)為宜。但是，在(zai)(zai)打滑(hua)的(de)(de)(de)路面，當向(xiang)(xiang)(xiang)后輪(lun)(lun)分(fen)(fen)(fen)(fen)(fen)配(pei)較大驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)時，就(jiu)會引起過度(du)轉向(xiang)(xiang)(xiang)。有資料認為，理想的(de)(de)(de)前(qian)(qian)后驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)分(fen)(fen)(fen)(fen)(fen)配(pei)比(bi)在(zai)(zai)3O ：70～50：50。目前(qian)(qian)，本田新一代Legend轎車(che)(che)(che)的(de)(de)(de)SH—AWD能(neng)使前(qian)(qian)后驅(qu)(qu)動(dong)(dong)力(li)(li)(li)(li)分(fen)(fen)(fen)(fen)(fen)配(pei)在(zai)(zai)70：30—30：70內連續變化。

輪(lun)(lun)體、支(zhi)重(zhong)(zhong)輪(lun)(lun)軸、軸套、密封圈、端蓋等(deng)相關(guan)部(bu)件構成。支(zhi)重(zhong)(zhong)輪(lun)(lun)可分(fen)為(wei)單(dan)邊支(zhi)重(zhong)(zhong)輪(lun)(lun)與雙邊支(zhi)重(zhong)(zhong)輪(lun)(lun)；挖掘(jue)機(ji)用支(zhi)重(zhong)(zhong)輪(lun)(lun)與推土機(ji)用支(zhi)重(zhong)(zhong)輪(lun)(lun)，挖掘(jue)機(ji)用支(zhi)重(zhong)(zhong)輪(lun)(lun)一般(ban)(ban)是(shi)黑(hei)色油漆(qi)，推土機(ji)支(zhi)重(zhong)(zhong)輪(lun)(lun)一般(ban)(ban)是(shi)黃(huang)色油漆(qi)

支重輪(lun)輪(lun)體(ti)材(cai)料一般(ban)50Mn、40Mn2、等材(cai)料，主要(yao)(yao)(yao)工(gong)(gong)藝鑄(zhu)造(zao)或(huo)鍛造(zao)，機械加(jia)(jia)工(gong)(gong)，然后進行熱(re)處理(li)，輪(lun)子表面淬火(huo)后的(de)硬度要(yao)(yao)(yao)達到(dao)(dao)HRC45~52，以(yi)增加(jia)(jia)輪(lun)子表面的(de)耐磨性(xing)。支重輪(lun)軸(zhou)的(de)加(jia)(jia)工(gong)(gong)精度要(yao)(yao)(yao)求(qiu)比較高，一般(ban)是需要(yao)(yao)(yao)數控機床進行加(jia)(jia)工(gong)(gong)才能達到(dao)(dao)要(yao)(yao)(yao)求(qiu)。材(cai)料以(yi)40Mn2較多，加(jia)(jia)工(gong)(gong)后也要(yao)(yao)(yao)進行淬火(huo)熱(re)處理(li)，硬度達到(dao)(dao)HRC42左右