轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機(ji)總成即(ji)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi),又(you)名(ming)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)機(ji)、方向(xiang)(xiang)(xiang)機(ji),它是(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)系中最重要的(de)(de)部件。它的(de)(de)作用是(shi):增大轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)盤(pan)傳到(dao)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)傳動(dong)(dong)(dong)機(ji)構(gou)的(de)(de)力和改變力的(de)(de)傳遞(di)方向(xiang)(xiang)(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)的(de)(de)操(cao)縱是(shi)全液(ye)(ye)壓(ya)式(shi)(shi)(shi),也就是(shi)說在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)柱和轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)輪(lun)之(zhi)間沒有(you)機(ji)械連接(jie),在轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)與(yu)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)油(you)缸之(zhi)間是(shi)液(ye)(ye)壓(ya)管或軟管鏈接(jie)。當轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)方向(xiang)(xiang)(xiang)盤(pan),轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)根據(ju)方向(xiang)(xiang)(xiang)盤(pan)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)動(dong)(dong)(dong)比例輸送(song)相對的(de)(de)油(you)量(liang),該(gai)油(you)量(liang)直接(jie)流到(dao)操(cao)縱缸相應一側,同時(shi)另一側的(de)(de)油(you)量(liang)回(hui)到(dao)油(you)箱(xiang)。轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)按結構(gou)形(xing)式(shi)(shi)(shi)可(ke)分(fen)為:有(you)齒(chi)(chi)輪(lun)齒(chi)(chi)條(tiao)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)、蝸(gua)桿曲柄(bing)指銷式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)、循環球-齒(chi)(chi)條(tiao)齒(chi)(chi)扇式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)、循環球曲柄(bing)指銷式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)、蝸(gua)桿滾輪(lun)式(shi)(shi)(shi)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)等。按照助(zhu)力形(xing)式(shi)(shi)(shi)又(you)可(ke)以(yi)分(fen):為機(ji)械式(shi)(shi)(shi)(無助(zhu)力)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi),和動(dong)(dong)(dong)力式(shi)(shi)(shi)(有(you)助(zhu)力)轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)兩種(zhong),其中動(dong)(dong)(dong)力轉(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)(zhuan)向(xiang)(xiang)(xiang)器(qi)(qi)(qi)(qi)又(you)可(ke)以(yi)分(fen)為氣壓(ya)動(dong)(dong)(dong)力式(shi)(shi)(shi)、液(ye)(ye)壓(ya)動(dong)(dong)(dong)力式(shi)(shi)(shi)、電動(dong)(dong)(dong)助(zhu)力式(shi)(shi)(shi)、電液(ye)(ye)助(zhu)力式(shi)(shi)(shi)等種(zhong)類。
法(fa)拉(la)利488 GTB是意(yi)大利跑車制造商法拉利(Ferrari)推出的一款中置后驅跑車,作為法拉利458 Italia的繼(ji)任車型(xing),于2015年3月在日內瓦車展首次亮(liang)相。該車搭載一臺3.9L雙渦輪增(zeng)壓V8發(fa)動機,最大功率493kW(670PS),最大扭矩760Nm,官方宣稱極速可(ke)達330km/h,0-100km/h加速時間僅需3秒。488 GTB的(de)獨(du)特空(kong)氣動力學外觀(guan)設計采用多項專利技術,極大地(di)提升(sheng)了整車性能,配合強勁(jing)動力和優異(yi)操(cao)控表現,488 GTB為超跑界樹立了V8公路(lu)跑車的(de)全新標桿(gan)。
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