在方(fang)向(xiang)盤下邊的方(fang)向(xiang)桿上找(zhao)到(dao)助力電(dian)機(ji),電(dian)機(ji)上一(yi)(yi)般有(you)(you)一(yi)(yi)個小(xiao)鐵(tie)蓋(gai)護著的、帶四根(gen)線(帶有(you)(you)一(yi)(yi)個插頭)的就是轉向(xiang)助力扭(niu)矩傳感器,拆下小(xiao)鐵(tie)蓋(gai)就能看(kan)到(dao)。
電(dian)(dian)動(dong)助力(li)轉(zhuan)向系統(tong)主要由扭(niu)矩傳感(gan)(gan)器,車(che)速傳感(gan)(gan)器,電(dian)(dian)動(dong)機,減速機構與電(dian)(dian)子控(kong)(kong)(kong)制(zhi)(zhi)單(dan)元等(deng)組成(cheng)。該(gai)系統(tong)通過(guo)扭(niu)矩傳感(gan)(gan)器感(gan)(gan)知(zhi)駕(jia)駛員在(zai)轉(zhuan)向操作(zuo)時方向盤產生的(de)扭(niu)矩力(li)和轉(zhuan)向角度,就會把操控(kong)(kong)(kong)信息轉(zhuan)換成(cheng)數字(zi)信號(hao)輸入到控(kong)(kong)(kong)制(zhi)(zhi)單(dan)元,再經過(guo)控(kong)(kong)(kong)制(zhi)(zhi)單(dan)元對這些信號(hao)進行(xing)運算得到一(yi)個最(zui)佳的(de)力(li)矩最(zui)后控(kong)(kong)(kong)制(zhi)(zhi)驅使電(dian)(dian)動(dong)機工作(zuo)。以上就是整個電(dian)(dian)動(dong)助力(li)系統(tong)構成(cheng)和工作(zuo)的(de)過(guo)程,不難看(kan)出扭(niu)矩傳感(gan)(gan)器在(zai)電(dian)(dian)動(dong)助力(li)系統(tong)中(zhong)是最(zui)為(wei)重要的(de)器件之一(yi)。
扭矩(ju)傳(chuan)(chuan)感(gan)器(qi)在(zai)電(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)(xi)統(tong)(tong)中(zhong)的作用(yong)電(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)(xi)統(tong)(tong)可(ke)以(yi)稱之為(wei)EPS,它(ta)就是一種(zhong)直(zhi)接依靠電(dian)(dian)機(ji)(ji)提(ti)供(gong)輔助(zhu)(zhu)(zhu)扭矩(ju)的動(dong)(dong)力(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)(xi)統(tong)(tong)。在(zai)整個系(xi)(xi)(xi)統(tong)(tong)中(zhong),扭矩(ju)傳(chuan)(chuan)感(gan)器(qi)起(qi)到決定性(xing)作用(yong)。與傳(chuan)(chuan)統(tong)(tong)的液壓(ya)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)(xi)統(tong)(tong)不(bu)(bu)同的是電(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)系(xi)(xi)(xi)統(tong)(tong)具有性(xing)能應用(yong)上更大(da)的優勢。它(ta)不(bu)(bu)光在(zai)需要轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)時才啟動(dong)(dong)電(dian)(dian)機(ji)(ji)產生(sheng)助(zhu)(zhu)(zhu)力(li)(li),這樣能大(da)大(da)的減少發動(dong)(dong)機(ji)(ji)燃(ran)油消耗。電(dian)(dian)動(dong)(dong)助(zhu)(zhu)(zhu)力(li)(li)能在(zai)各種(zhong)行駛工況下提(ti)供(gong)最(zui)佳助(zhu)(zhu)(zhu)力(li)(li),減小由路(lu)面不(bu)(bu)平所(suo)引起(qi)電(dian)(dian)動(dong)(dong)機(ji)(ji)的輸(shu)出轉(zhuan)(zhuan)矩(ju)通過傳(chuan)(chuan)動(dong)(dong)裝(zhuang)置的作用(yong)而助(zhu)(zhu)(zhu)力(li)(li)向(xiang)(xiang)(xiang)系(xi)(xi)(xi)的擾動(dong)(dong),改善汽(qi)車的轉(zhuan)(zhuan)向(xiang)(xiang)(xiang)特性(xing),提(ti)高(gao)汽(qi)車的主動(dong)(dong)安全性(xing)。和液壓(ya)助(zhu)(zhu)(zhu)力(li)(li)相比沒有液壓(ya)回路(lu),調(diao)整和檢(jian)測更容易,裝(zhuang)配(pei)自動(dong)(dong)化程(cheng)度更高(gao),且(qie)可(ke)通過設置不(bu)(bu)同的程(cheng)序,快速(su)以(yi)及不(bu)(bu)同車型匹配(pei),縮(suo)短生(sheng)產和開發周期。
扭矩傳感器的作用是測量動態(tai)扭矩和靜(jing)態(tai)扭矩,其檢測穩定性、抗干(gan)擾(rao)性,以及精(jing)度都很好,每次使用不需(xu)要調整(zheng)為(wei)零。
需要的(de)(de)是(shi)狠辣的(de)(de)外形,敏捷的(de)(de)加速,凌(ling)厲(li)的(de)(de)操控.日產的(de)(de)工程(cheng)師們懷著這(zhe)信念(nian)尾部(bu)擴散器設(she)計得到改良(liang),可以(yi)使(shi)氣(qi)流(liu)(liu)更(geng)加快(kuai)速的(de)(de)從車底(di)流(liu)(liu)出。后(hou)(hou)保(bao)險(xian)杠下部(bu)兩側新(xin)增(zeng)的(de)(de)導(dao)流(liu)(liu)孔目的(de)(de)是(shi)將氣(qi)流(liu)(liu)引入,幫助提升后(hou)(hou)剎車系統(tong)的(de)(de)冷卻效(xiao)率(lv)。另外一些(xie)一目了然的(de)(de)變化就(jiu)是(shi)新(xin)車采用了直徑(jing)更(geng)大的(de)(de)排氣(qi)管。而這(zhe)些(xie)在(zai)我們看來還(huan)只算得上是(shi)一些(xie)裝飾。
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