起(qi)動繼電器:保護線路,點(dian)火開關。
汽(qi)車啟動繼電(dian)器的作用(yong):
1、主要是通過(guo)控制(zhi)(zhi)低(di)壓(ya)線(xian)路(lu)的(de)電(dian)(dian)流(liu)來控制(zhi)(zhi)高壓(ya)線(xian)路(lu)的(de)電(dian)(dian)流(liu),起到電(dian)(dian)流(liu)開關(guan)的(de)作用。啟動(dong)繼電(dian)(dian)器是啟動(dong)系統組成部件之一,在汽(qi)車(che)上主要作用為小電(dian)(dian)流(liu);
2、控(kong)制(zhi)大電(dian)(dian)(dian)流方式啟動(dong)馬達轉(zhuan)動(dong),從而帶(dai)動(dong)發(fa)電(dian)(dian)(dian)機內部(bu)磁電(dian)(dian)(dian)機轉(zhuan)子(zi)轉(zhuan)動(dong),給(gei)點火(huo)器輸入點火(huo)脈沖信號(hao),使(shi)點火(huo)器產(chan)生(sheng)電(dian)(dian)(dian)火(huo)花,點燃汽缸內的混合燃氣并(bing)做(zuo)功(gong)。繼電(dian)(dian)(dian)器屬于開(kai)關類,它是利用電(dian)(dian)(dian)磁原(yuan)(yuan)理(li)、機電(dian)(dian)(dian)原(yuan)(yuan)理(li)使(shi)接點閉(bi)合或(huo)斷(duan)開(kai)來驅動(dong)或(huo)控(kong)制(zhi)相(xiang)關電(dian)(dian)(dian)路的;
3、繼(ji)電(dian)器為一(yi)種控(kong)制(zhi)器件,它(ta)有受控(kong)系(xi)統(輸(shu)(shu)入(ru)回路)和控(kong)制(zhi)系(xi)統(輸(shu)(shu)出(chu)回路)兩部分(fen)。當輸(shu)(shu)入(ru)量(電(dian)、磁、光(guang)、熱等物理量)達到(dao)某一(yi)定(ding)(ding)(ding)值時(shi),輸(shu)(shu)出(chu)量躍(yue)變(bian)(bian)式地由零(ling)變(bian)(bian)化到(dao)一(yi)定(ding)(ding)(ding)值(或由一(yi)定(ding)(ding)(ding)值跳變(bian)(bian)到(dao)零(ling)),從(cong)而實(shi)現對電(dian)路的(de)控(kong)制(zhi)、保護(hu)、調節和傳遞信息等目的(de)。
啟(qi)動(dong)(dong)繼電(dian)器(qi)是單(dan)獨部件,其作用(yong)(yong)是接通、斷開吸引線圈(quan)(quan)和保持線圈(quan)(quan)電(dian)路。在電(dian)冰箱、空調(diao)器(qi)這類(lei)小型制(zhi)冷設備中,制(zhi)冷壓縮機多采(cai)用(yong)(yong)單(dan)相分(fen)相式異(yi)步電(dian)動(dong)(dong)機,啟(qi)動(dong)(dong)繼電(dian)器(qi)的作用(yong)(yong)是幫助(zhu)電(dian)動(dong)(dong)機啟(qi)動(dong)(dong),啟(qi)動(dong)(dong)完成(cheng)后自動(dong)(dong)斷開副繞組,避(bi)免(mian)燒(shao)壞(huai)副繞組線圈(quan)(quan)。
大(da)(da)(da)眾(zhong)Atlas是大(da)(da)(da)眾(zhong)汽車(che)推(tui)出的(de)(de)(de)一款大(da)(da)(da)中型(xing)的(de)(de)(de)SUV。大(da)(da)(da)眾(zhong)正式在(zai)美國(guo)發(fa)布了旗下全新中大(da)(da)(da)型(xing)SUV——Atlas的(de)(de)(de)官圖,Atlas也(ye)是希(xi)臘(la)神(shen)話中一位大(da)(da)(da)力神(shen)的(de)(de)(de)名字。其(qi)國(guo)產(chan)(chan)版(ban)(ban)本(ben)將在(zai)2016年廣州車(che)展上(shang)(shang)正式亮(liang)相,并(bing)于2017年第一季度在(zai)國(guo)內正式上(shang)(shang)市。 大(da)(da)(da)眾(zhong)Atlas外觀氣場(chang)強大(da)(da)(da),車(che)身整體線(xian)條粗獷,前LED大(da)(da)(da)燈組與(yu)格柵(zha)相連,雙色前保(bao)險杠搭配粗條幅鍍鉻格柵(zha),給人感覺非常霸氣。車(che)身側面勾勒出獨特的(de)(de)(de)腰線(xian),穩重厚(hou)實。該車(che)國(guo)產(chan)(chan)后將搭載(zai)2.0T和(he)2.5T V6發(fa)動機(ji)。2.0T發(fa)動機(ji)分高低(di)功率版(ban)(ban)本(ben),最大(da)(da)(da)功率分別為162kW(220PS)和(he)137k[3]W(186PS)。高功率版(ban)(ban)本(ben)采用(yong)米勒循環技術,匹配DQ500 7速(su)濕式雙離合(he)變速(su)器和(he)四(si)驅(qu)(qu)系(xi)統,而(er)低(di)功率版(ban)(ban)則采用(yong)前輪(lun)驅(qu)(qu)動。新增的(de)(de)(de)2.5T V6發(fa)動機(ji),最大(da)(da)(da)功率220kW2(299PS),峰值(zhi)扭矩500Nm,匹配DQ500 7速(su)濕式雙離合(he)變速(su)箱和(he)四(si)驅(qu)(qu)系(xi)統。
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