換(huan)擋機構修(xiu)理包。 汽車(che)換(huan)擋機構的(de)(de)組成(cheng)是(shi)(shi)檔(dang)(dang)桿(gan),拉(la)線,選檔(dang)(dang)及換(huan)檔(dang)(dang)結構,撥(bo)叉及同步(bu)器(qi),其(qi)中擋桿(gan)的(de)(de)作用(yong)(yong)是(shi)(shi)對檔(dang)(dang)位(wei)進行(xing)控制,拉(la)線是(shi)(shi)拉(la)動檔(dang)(dang)位(wei)位(wei)置,選檔(dang)(dang)的(de)(de)作用(yong)(yong)是(shi)(shi)掛擋或者檔(dang)(dang)位(wei)變(bian)化(hua),撥(bo)叉及同步(bu)器(qi)的(de)(de)作用(yong)(yong),是(shi)(shi)負責結合及分離(li)各個檔(dang)(dang)位(wei)齒輪。
手(shou)動變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)的基本組成:輸(shu)入軸、輸(shu)出軸、差速器(qi)(qi)(qi)(qi)、各擋(dang)(dang)齒輪(lun)、軸承(cheng)、同步器(qi)(qi)(qi)(qi)、換(huan)(huan)擋(dang)(dang)機構、撥(bo)叉、油封、潤(run)滑(hua)油、殼體(ti)、輸(shu)出法蘭。手(shou)動變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)又稱機械(xie)式(shi)變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi),即必須(xu)用手(shou)撥(bo)動變(bian)(bian)(bian)速桿才能(neng)改變(bian)(bian)(bian)變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)的齒輪(lun)嚙(nie)合位置,改變(bian)(bian)(bian)傳(chuan)動比,以(yi)達(da)到變(bian)(bian)(bian)速的目的。轎車手(shou)動變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)大多為四擋(dang)(dang)或五擋(dang)(dang)有級(ji)式(shi)齒輪(lun)傳(chuan)動變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi),通常帶同步器(qi)(qi)(qi)(qi),換(huan)(huan)擋(dang)(dang)方便、噪音小,手(shou)動變(bian)(bian)(bian)速在操(cao)(cao)縱(zong)時必須(xu)踩(cai)下(xia)離合,方可撥(bo)得(de)動變(bian)(bian)(bian)速桿。根據其換(huan)(huan)擋(dang)(dang)手(shou)柄和(he)變(bian)(bian)(bian)速器(qi)(qi)(qi)(qi)的相對位置不一樣,有兩種結(jie)構形式(shi),分別是(shi)直接操(cao)(cao)縱(zong)式(shi)和(he)遠距離操(cao)(cao)縱(zong)式(shi)。
美國通用(yong)GM汽車旗(qi)下的(de)多用(yong)途車品牌GMC在本(ben)屆底(di)特(te)律車展中發(fa)表了Sierra的(de)大改款新車,Sierra是(shi)GMC旗(qi)下主力的(de)皮卡Pickup車型(xing),在美國市場(chang)上主要的(de)競爭(zheng)對手包括了福特(te)的(de)F系列、克萊斯勒的(de)Ram與(yu)豐田的(de)Tundra。
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