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起動繼電器

起動繼電器

起動繼電器

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起動繼電器簡介

起動繼電器(qi):保護線路,點(dian)火開(kai)關。

汽(qi)車(che)啟動(dong)繼電器的(de)作用:

1、主(zhu)要(yao)是(shi)通過控(kong)(kong)制低壓線路(lu)的(de)電(dian)流(liu)來控(kong)(kong)制高壓線路(lu)的(de)電(dian)流(liu),起到電(dian)流(liu)開關(guan)的(de)作用。啟動(dong)繼(ji)電(dian)器是(shi)啟動(dong)系(xi)統組成部件之一,在汽(qi)車(che)上(shang)主(zhu)要(yao)作用為小電(dian)流(liu);

2、控制大(da)電(dian)(dian)流方式(shi)啟(qi)動(dong)馬(ma)達(da)轉動(dong),從而帶(dai)動(dong)發(fa)電(dian)(dian)機(ji)(ji)內部磁電(dian)(dian)機(ji)(ji)轉子轉動(dong),給點火器(qi)輸入點火脈沖信(xin)號,使點火器(qi)產(chan)生電(dian)(dian)火花,點燃汽缸(gang)內的混合(he)燃氣并做功。繼電(dian)(dian)器(qi)屬于開(kai)關(guan)類,它(ta)是利(li)用電(dian)(dian)磁原理、機(ji)(ji)電(dian)(dian)原理使接點閉合(he)或斷開(kai)來(lai)驅動(dong)或控制相關(guan)電(dian)(dian)路的;

3、繼電器(qi)為一(yi)種控(kong)制器(qi)件,它(ta)有受(shou)控(kong)系統(tong)(輸(shu)入回路)和(he)控(kong)制系統(tong)(輸(shu)出回路)兩部分。當(dang)輸(shu)入量(電、磁、光、熱等(deng)物理量)達(da)到某一(yi)定值時(shi),輸(shu)出量躍變(bian)式地由零變(bian)化到一(yi)定值(或由一(yi)定值跳變(bian)到零),從(cong)而實現對(dui)電路的(de)控(kong)制、保護、調節和(he)傳遞(di)信息等(deng)目的(de)。

啟動(dong)(dong)繼電(dian)器(qi)是(shi)單獨(du)部件,其作(zuo)用(yong)是(shi)接通、斷開(kai)吸引線圈和保持(chi)線圈電(dian)路。在電(dian)冰(bing)箱、空調器(qi)這類小型制冷(leng)(leng)設備中(zhong),制冷(leng)(leng)壓(ya)縮(suo)機(ji)多采用(yong)單相分相式異步電(dian)動(dong)(dong)機(ji),啟動(dong)(dong)繼電(dian)器(qi)的作(zuo)用(yong)是(shi)幫(bang)助電(dian)動(dong)(dong)機(ji)啟動(dong)(dong),啟動(dong)(dong)完成后自動(dong)(dong)斷開(kai)副(fu)繞組,避免燒壞副(fu)繞組線圈。