轉(zhuan)(zhuan)向(xiang)(xiang)機(ji)總成即轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi),又(you)名轉(zhuan)(zhuan)向(xiang)(xiang)機(ji)、方(fang)向(xiang)(xiang)機(ji),它(ta)是(shi)轉(zhuan)(zhuan)向(xiang)(xiang)系中(zhong)最重要的(de)部件。它(ta)的(de)作用是(shi):增大(da)轉(zhuan)(zhuan)向(xiang)(xiang)盤(pan)傳到(dao)轉(zhuan)(zhuan)向(xiang)(xiang)傳動(dong)機(ji)構的(de)力(li)(li)和(he)改變力(li)(li)的(de)傳遞方(fang)向(xiang)(xiang)。轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)的(de)操(cao)縱(zong)(zong)是(shi)全液壓(ya)式(shi)(shi)(shi),也就是(shi)說在(zai)轉(zhuan)(zhuan)向(xiang)(xiang)柱和(he)轉(zhuan)(zhuan)向(xiang)(xiang)輪之間沒有機(ji)械連(lian)接(jie),在(zai)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)與轉(zhuan)(zhuan)向(xiang)(xiang)油缸之間是(shi)液壓(ya)管或軟管鏈接(jie)。當(dang)轉(zhuan)(zhuan)動(dong)方(fang)向(xiang)(xiang)盤(pan),轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)根(gen)據(ju)方(fang)向(xiang)(xiang)盤(pan)轉(zhuan)(zhuan)動(dong)比例輸送相(xiang)對的(de)油量(liang),該油量(liang)直接(jie)流到(dao)操(cao)縱(zong)(zong)缸相(xiang)應(ying)一側,同時另一側的(de)油量(liang)回到(dao)油箱。轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)按(an)結(jie)構形(xing)式(shi)(shi)(shi)可分(fen)為:有齒(chi)輪齒(chi)條式(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、蝸桿(gan)曲柄指銷(xiao)(xiao)式(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、循(xun)環球(qiu)-齒(chi)條齒(chi)扇式(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、循(xun)環球(qiu)曲柄指銷(xiao)(xiao)式(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)、蝸桿(gan)滾(gun)輪式(shi)(shi)(shi)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)等(deng)(deng)。按(an)照(zhao)助力(li)(li)形(xing)式(shi)(shi)(shi)又(you)可以分(fen):為機(ji)械式(shi)(shi)(shi)(無助力(li)(li))轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi),和(he)動(dong)力(li)(li)式(shi)(shi)(shi)(有助力(li)(li))轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)兩種,其中(zhong)動(dong)力(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)器(qi)(qi)又(you)可以分(fen)為氣壓(ya)動(dong)力(li)(li)式(shi)(shi)(shi)、液壓(ya)動(dong)力(li)(li)式(shi)(shi)(shi)、電(dian)動(dong)助力(li)(li)式(shi)(shi)(shi)、電(dian)液助力(li)(li)式(shi)(shi)(shi)等(deng)(deng)種類。
XKR乃捷豹(bao)(bao)公司的(de)經(jing)典跑(pao)車(che)。從(cong)最(zui)初風靡全球、令(ling)有車(che)一族對捷豹(bao)(bao)刮目相看的(de)富有傳奇(qi)色彩的(de)XK120到(dao)當今(jin)的(de)coupe和(he)(he)敞篷系列,捷豹(bao)(bao)XK跑(pao)車(che)在卓越豪華(hua)性(xing)和(he)(he)駕駛操控性(xing)方面(mian)始終引領潮流。XK8便快速成為捷豹(bao)(bao)歷史(shi)上銷(xiao)量(liang)最(zui)好的(de)跑(pao)車(che)。憑借(jie)不凡(fan)的(de)外形(xing)(xing)和(he)(he)優(you)異的(de)性(xing)能,它很(hen)快便成為全球最(zui)暢銷(xiao)的(de)車(che)型(xing)之一。外形(xing)(xing)有著靚麗的(de)車(che)身、內飾(shi)比較完美、個性(xing)、時(shi)尚
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