起(qi)動(dong)繼電器:保護(hu)線路,點火(huo)開關。
汽車啟動繼電(dian)器的(de)作用(yong):
1、主(zhu)要是(shi)通(tong)過控制低壓(ya)線路的(de)電(dian)流來控制高壓(ya)線路的(de)電(dian)流,起(qi)到電(dian)流開關的(de)作(zuo)用。啟動繼電(dian)器是(shi)啟動系統(tong)組成(cheng)部件之一,在汽車上(shang)主(zhu)要作(zuo)用為小電(dian)流;
2、控(kong)制(zhi)大電流(liu)方式啟(qi)動馬達轉(zhuan)(zhuan)動,從而(er)帶動發電機(ji)(ji)內(nei)(nei)部(bu)磁(ci)電機(ji)(ji)轉(zhuan)(zhuan)子轉(zhuan)(zhuan)動,給點(dian)(dian)火(huo)器輸入點(dian)(dian)火(huo)脈沖信號(hao),使(shi)點(dian)(dian)火(huo)器產生電火(huo)花,點(dian)(dian)燃(ran)汽(qi)缸內(nei)(nei)的混合燃(ran)氣(qi)并做功。繼(ji)電器屬于開關(guan)類(lei),它是利用電磁(ci)原理(li)、機(ji)(ji)電原理(li)使(shi)接點(dian)(dian)閉合或斷(duan)開來(lai)驅動或控(kong)制(zhi)相(xiang)關(guan)電路(lu)的;
3、繼電(dian)(dian)器(qi)為(wei)一種控(kong)制器(qi)件,它(ta)有受控(kong)系(xi)統(輸入回路(lu))和(he)控(kong)制系(xi)統(輸出回路(lu))兩部分。當(dang)輸入量(liang)(電(dian)(dian)、磁、光、熱等(deng)物理量(liang))達到某一定值時,輸出量(liang)躍(yue)變(bian)式地由零變(bian)化(hua)到一定值(或由一定值跳變(bian)到零),從而實現對電(dian)(dian)路(lu)的控(kong)制、保護(hu)、調節和(he)傳遞信息等(deng)目的。
啟(qi)(qi)動(dong)(dong)繼(ji)電(dian)(dian)(dian)器是單獨部件,其作(zuo)用是接通、斷開吸引線(xian)圈和保持線(xian)圈電(dian)(dian)(dian)路。在電(dian)(dian)(dian)冰(bing)箱、空調器這(zhe)類小型(xing)制(zhi)冷設備中,制(zhi)冷壓縮(suo)機(ji)多采用單相分相式異步(bu)電(dian)(dian)(dian)動(dong)(dong)機(ji),啟(qi)(qi)動(dong)(dong)繼(ji)電(dian)(dian)(dian)器的(de)作(zuo)用是幫助電(dian)(dian)(dian)動(dong)(dong)機(ji)啟(qi)(qi)動(dong)(dong),啟(qi)(qi)動(dong)(dong)完成(cheng)后自動(dong)(dong)斷開副(fu)繞組,避免燒壞(huai)副(fu)繞組線(xian)圈。
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