起(qi)動繼電器:保護線(xian)路,點火開關。
汽車啟動繼電器的作用(yong):
1、主(zhu)要是(shi)通過控制(zhi)低壓(ya)線路的電(dian)(dian)流(liu)來(lai)控制(zhi)高壓(ya)線路的電(dian)(dian)流(liu),起到電(dian)(dian)流(liu)開關的作用(yong)(yong)。啟動繼電(dian)(dian)器是(shi)啟動系統組成部件之(zhi)一,在汽車上(shang)主(zhu)要作用(yong)(yong)為小電(dian)(dian)流(liu);
2、控(kong)(kong)制(zhi)大電(dian)流方式啟動馬達轉(zhuan)動,從而帶動發電(dian)機內部磁(ci)電(dian)機轉(zhuan)子轉(zhuan)動,給點火(huo)器(qi)輸入點火(huo)脈(mo)沖信號,使(shi)點火(huo)器(qi)產生電(dian)火(huo)花,點燃汽缸內的(de)混(hun)合燃氣(qi)并做功(gong)。繼電(dian)器(qi)屬于開關(guan)類,它是(shi)利用電(dian)磁(ci)原理、機電(dian)原理使(shi)接點閉合或斷開來驅動或控(kong)(kong)制(zhi)相(xiang)關(guan)電(dian)路的(de);
3、繼(ji)電(dian)器(qi)為一(yi)種控(kong)制器(qi)件,它有受控(kong)系(xi)統(輸(shu)入回路)和控(kong)制系(xi)統(輸(shu)出(chu)回路)兩(liang)部分。當輸(shu)入量(liang)(電(dian)、磁、光、熱等(deng)物理量(liang))達到(dao)某一(yi)定值時,輸(shu)出(chu)量(liang)躍變式(shi)地由零變化到(dao)一(yi)定值(或由一(yi)定值跳變到(dao)零),從(cong)而實(shi)現對電(dian)路的控(kong)制、保護、調(diao)節和傳遞信(xin)息等(deng)目的。
啟(qi)(qi)動(dong)(dong)(dong)繼電(dian)(dian)器(qi)(qi)是單獨(du)部件,其作用(yong)(yong)是接(jie)通、斷(duan)開吸引線圈和保持線圈電(dian)(dian)路。在電(dian)(dian)冰箱、空調器(qi)(qi)這類(lei)小型制冷(leng)設備中,制冷(leng)壓(ya)縮機多采用(yong)(yong)單相分相式異(yi)步電(dian)(dian)動(dong)(dong)(dong)機,啟(qi)(qi)動(dong)(dong)(dong)繼電(dian)(dian)器(qi)(qi)的作用(yong)(yong)是幫助電(dian)(dian)動(dong)(dong)(dong)機啟(qi)(qi)動(dong)(dong)(dong),啟(qi)(qi)動(dong)(dong)(dong)完成后(hou)自動(dong)(dong)(dong)斷(duan)開副繞(rao)組,避免(mian)燒(shao)壞副繞(rao)組線圈。
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