起動繼(ji)電(dian)器:保(bao)護(hu)線路,點火開關(guan)。
汽車啟動繼電(dian)器的作用:
1、主要(yao)是通過控(kong)制(zhi)(zhi)低壓線路(lu)的(de)電(dian)流(liu)來控(kong)制(zhi)(zhi)高壓線路(lu)的(de)電(dian)流(liu),起到(dao)電(dian)流(liu)開關的(de)作用(yong)。啟動繼電(dian)器是啟動系(xi)統組成(cheng)部件之一(yi),在汽(qi)車上主要(yao)作用(yong)為小電(dian)流(liu);
2、控(kong)制大電(dian)(dian)流(liu)方式(shi)啟(qi)動(dong)(dong)馬達轉動(dong)(dong),從而帶動(dong)(dong)發電(dian)(dian)機內(nei)部磁電(dian)(dian)機轉子轉動(dong)(dong),給點(dian)(dian)火(huo)(huo)器(qi)(qi)輸入點(dian)(dian)火(huo)(huo)脈沖(chong)信(xin)號,使點(dian)(dian)火(huo)(huo)器(qi)(qi)產生電(dian)(dian)火(huo)(huo)花,點(dian)(dian)燃(ran)汽(qi)缸內(nei)的(de)混合(he)燃(ran)氣并做功(gong)。繼電(dian)(dian)器(qi)(qi)屬于開關類,它(ta)是利(li)用電(dian)(dian)磁原(yuan)理(li)(li)、機電(dian)(dian)原(yuan)理(li)(li)使接點(dian)(dian)閉合(he)或(huo)斷(duan)開來驅動(dong)(dong)或(huo)控(kong)制相關電(dian)(dian)路的(de);
3、繼(ji)電器為一(yi)種(zhong)控制(zhi)(zhi)器件,它有受控系(xi)統(tong)(輸(shu)(shu)入回(hui)路)和(he)控制(zhi)(zhi)系(xi)統(tong)(輸(shu)(shu)出回(hui)路)兩(liang)部分。當(dang)輸(shu)(shu)入量(電、磁、光、熱等(deng)物理量)達到某一(yi)定(ding)值(zhi)時,輸(shu)(shu)出量躍變式地由零變化到一(yi)定(ding)值(zhi)(或(huo)由一(yi)定(ding)值(zhi)跳變到零),從而實現對電路的(de)控制(zhi)(zhi)、保護、調節和(he)傳遞(di)信息等(deng)目的(de)。
啟動(dong)(dong)(dong)繼(ji)電(dian)(dian)器(qi)(qi)(qi)是單獨部件(jian),其作(zuo)用(yong)是接通、斷開吸(xi)引線圈和保持線圈電(dian)(dian)路。在電(dian)(dian)冰箱、空調(diao)器(qi)(qi)(qi)這類小(xiao)型制冷設備中,制冷壓縮機(ji)多(duo)采用(yong)單相(xiang)分相(xiang)式異步電(dian)(dian)動(dong)(dong)(dong)機(ji),啟動(dong)(dong)(dong)繼(ji)電(dian)(dian)器(qi)(qi)(qi)的作(zuo)用(yong)是幫(bang)助電(dian)(dian)動(dong)(dong)(dong)機(ji)啟動(dong)(dong)(dong),啟動(dong)(dong)(dong)完(wan)成后自(zi)動(dong)(dong)(dong)斷開副(fu)繞組(zu),避免燒壞副(fu)繞組(zu)線圈。
國產華晨寶馬X1和(he)進口版X1幾乎完全(quan)一(yi)致。對于寶馬而言標(biao)志性的(de)(de)(de)(de)(de)細(xi)節它也(ye)沒(mei)有缺(que)失,前臉依舊是(shi)(shi)(shi)那個(ge)(ge)(ge)標(biao)準(zhun)的(de)(de)(de)(de)(de)雙腎式進氣(qi)(qi)格(ge)柵,再加(jia)上(shang)那個(ge)(ge)(ge)充(chong)滿(man)精氣(qi)(qi)神的(de)(de)(de)(de)(de)三角形大(da)(da)眼睛(jing),讓整個(ge)(ge)(ge)前臉具有著一(yi)定的(de)(de)(de)(de)(de)兇氣(qi)(qi)。國產后(hou)的(de)(de)(de)(de)(de)X1 xDrive20i和(he)28i在(zai)(zai)(zai)(zai)前臉上(shang)的(de)(de)(de)(de)(de)主要(yao)區(qu)別(bie)是(shi)(shi)(shi),采(cai)用了(le)黑色格(ge)柵而28i采(cai)用了(le)鍍鉻(ge)格(ge)柵,28i較(jiao)20i在(zai)(zai)(zai)(zai)下格(ge)柵上(shang)多了(le)一(yi)條(tiao)橫置(zhi)鍍鉻(ge)條(tiao)。在(zai)(zai)(zai)(zai)車側華晨寶馬X1沒(mei)有過多地裝(zhuang)飾(shi),一(yi)條(tiao)微微上(shang)翹的(de)(de)(de)(de)(de)腰線(xian)使得它的(de)(de)(de)(de)(de)側面充(chong)滿(man)了(le)力量(liang)感,而雪(xue)花狀的(de)(de)(de)(de)(de)五幅鋁(lv)合金輪轂又在(zai)(zai)(zai)(zai)這種(zhong)力量(liang)感上(shang)添加(jia)了(le)些(xie)許的(de)(de)(de)(de)(de)時尚元素(su),二者(zhe)很好(hao)地融合到了(le)一(yi)起。在(zai)(zai)(zai)(zai)車尾(wei)(wei)的(de)(de)(de)(de)(de)C柱上(shang),寶馬經(jing)典的(de)(de)(de)(de)(de)拐角清晰可見。而28i在(zai)(zai)(zai)(zai)側面較(jiao)20i還多加(jia)裝(zhuang)了(le)一(yi)個(ge)(ge)(ge)銀色裙邊裝(zhuang)飾(shi)條(tiao)。而在(zai)(zai)(zai)(zai)尾(wei)(wei)部,X1繼續走SUV的(de)(de)(de)(de)(de)粗獷路(lu)線(xian),但(dan)是(shi)(shi)(shi)體現出這種(zhong)粗獷的(de)(de)(de)(de)(de)卻是(shi)(shi)(shi)那幾根簡潔的(de)(de)(de)(de)(de)線(xian)條(tiao),較(jiao)大(da)(da)面積的(de)(de)(de)(de)(de)后(hou)窗占(zhan)據了(le)尾(wei)(wei)部的(de)(de)(de)(de)(de)絕大(da)(da)部分。棱(leng)角分明的(de)(de)(de)(de)(de)LED尾(wei)(wei)燈在(zai)(zai)(zai)(zai)造(zao)型上(shang)讓X1的(de)(de)(de)(de)(de)車身線(xian)條(tiao)在(zai)(zai)(zai)(zai)這里有所(suo)延續。20i和(he)28i在(zai)(zai)(zai)(zai)尾(wei)(wei)部區(qu)別(bie)不(bu)大(da)(da),主要(yao)是(shi)(shi)(shi)在(zai)(zai)(zai)(zai)后(hou)包圍的(de)(de)(de)(de)(de)銀色飾(shi)板方面,28i要(yao)更高(gao)大(da)(da)一(yi)些(xie)。
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