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轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)機(ji)總成(cheng)即轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)，又名轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)機(ji)、方(fang)向(xiang)機(ji)，它是(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)系中最重要的(de)部件。它的(de)作用是(shi)：增大(da)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)盤傳(chuan)到轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)傳(chuan)動(dong)機(ji)構的(de)力(li)(li)和(he)(he)改(gai)變(bian)力(li)(li)的(de)傳(chuan)遞(di)方(fang)向(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)的(de)操縱是(shi)全液(ye)壓式(shi)(shi)(shi)，也就是(shi)說在轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)柱和(he)(he)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)輪(lun)(lun)之間(jian)沒有機(ji)械連(lian)接(jie)，在轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)與轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)油缸(gang)之間(jian)是(shi)液(ye)壓管或軟管鏈接(jie)。當(dang)轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)方(fang)向(xiang)盤，轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)根(gen)據方(fang)向(xiang)盤轉(zhuan)(zhuan)(zhuan)(zhuan)動(dong)比例(li)輸送相對的(de)油量(liang)(liang)，該(gai)油量(liang)(liang)直接(jie)流到操縱缸(gang)相應一側(ce)，同(tong)時另一側(ce)的(de)油量(liang)(liang)回到油箱。轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)按(an)結構形式(shi)(shi)(shi)可分(fen)(fen)為(wei)：有齒輪(lun)(lun)齒條式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)、蝸(gua)桿曲(qu)柄(bing)(bing)指銷式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)、循(xun)環(huan)(huan)球(qiu)-齒條齒扇式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)、循(xun)環(huan)(huan)球(qiu)曲(qu)柄(bing)(bing)指銷式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)、蝸(gua)桿滾輪(lun)(lun)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)等(deng)。按(an)照助(zhu)力(li)(li)形式(shi)(shi)(shi)又可以分(fen)(fen)：為(wei)機(ji)械式(shi)(shi)(shi)（無助(zhu)力(li)(li)）轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)，和(he)(he)動(dong)力(li)(li)式(shi)(shi)(shi)（有助(zhu)力(li)(li)）轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)兩種，其中動(dong)力(li)(li)轉(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)器(qi)(qi)(qi)(qi)(qi)又可以分(fen)(fen)為(wei)氣(qi)壓動(dong)力(li)(li)式(shi)(shi)(shi)、液(ye)壓動(dong)力(li)(li)式(shi)(shi)(shi)、電動(dong)助(zhu)力(li)(li)式(shi)(shi)(shi)、電液(ye)助(zhu)力(li)(li)式(shi)(shi)(shi)等(deng)種類(lei)。
2018年(nian)3月，捷(jie)豹汽車公布了其首款純(chun)電動SUV的量產版(ban)本I-Pace。該車將在2018年(nian)日內瓦車展上(shang)亮(liang)相(xiang)。
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