起動(dong)繼(ji)電器:保護線路,點火(huo)開關。
汽車啟動繼電(dian)器的作用:
1、主要是通過控(kong)制低(di)壓(ya)線(xian)路的(de)電流(liu)來控(kong)制高壓(ya)線(xian)路的(de)電流(liu),起(qi)到電流(liu)開(kai)關的(de)作用。啟動(dong)繼(ji)電器是啟動(dong)系(xi)統組成(cheng)部件之(zhi)一,在汽車上主要作用為小電流(liu);
2、控(kong)制大(da)電(dian)(dian)(dian)流方式啟動(dong)馬達轉動(dong),從而帶(dai)動(dong)發電(dian)(dian)(dian)機(ji)內部磁電(dian)(dian)(dian)機(ji)轉子轉動(dong),給點(dian)(dian)(dian)火(huo)器(qi)輸入點(dian)(dian)(dian)火(huo)脈沖信號,使點(dian)(dian)(dian)火(huo)器(qi)產生電(dian)(dian)(dian)火(huo)花,點(dian)(dian)(dian)燃(ran)汽缸內的(de)混合(he)(he)燃(ran)氣并做(zuo)功。繼電(dian)(dian)(dian)器(qi)屬于開關類,它是利(li)用電(dian)(dian)(dian)磁原理、機(ji)電(dian)(dian)(dian)原理使接點(dian)(dian)(dian)閉合(he)(he)或斷開來驅(qu)動(dong)或控(kong)制相關電(dian)(dian)(dian)路的(de);
3、繼電器(qi)為(wei)一(yi)種控(kong)(kong)制(zhi)器(qi)件,它有受控(kong)(kong)系統(輸(shu)入(ru)(ru)回(hui)路)和控(kong)(kong)制(zhi)系統(輸(shu)出回(hui)路)兩(liang)部(bu)分。當輸(shu)入(ru)(ru)量(電、磁、光、熱(re)等(deng)(deng)物理量)達(da)到某一(yi)定值時(shi),輸(shu)出量躍變(bian)式地由零(ling)變(bian)化到一(yi)定值(或由一(yi)定值跳變(bian)到零(ling)),從(cong)而實現(xian)對電路的控(kong)(kong)制(zhi)、保護、調(diao)節(jie)和傳遞信息等(deng)(deng)目(mu)的。
啟(qi)動繼電器是(shi)單獨部件(jian),其作用(yong)是(shi)接通、斷開吸引線(xian)圈和保持線(xian)圈電路。在電冰箱(xiang)、空調器這類小(xiao)型(xing)制冷設備中(zhong),制冷壓(ya)縮(suo)機多采用(yong)單相(xiang)分相(xiang)式異(yi)步(bu)電動機,啟(qi)動繼電器的(de)作用(yong)是(shi)幫助電動機啟(qi)動,啟(qi)動完成后自(zi)動斷開副繞組(zu),避免燒壞(huai)副繞組(zu)線(xian)圈。
這一(yi)代奔馳E級在外觀上依舊采用家族語言,但總體呈現出(chu)(chu)更(geng)加年輕的風(feng)貌,并將部(bu)分(fen)S級轎(jiao)車的設計下放。新E級推出(chu)(chu)了普(pu)通立標和運動版(ban)盾標兩種外觀類型。此次(ci)試駕的即為立標版(ban)本(ben),更(geng)趨向商(shang)務、行政人士。
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