汽車空調(diao)的溫控(kong)開(kai)關原(yuan)理:
1、溫控開(kai)關內(nei)部有(you)個(ge)雙金屬片(pian),具有(you)不同的(de)熱膨脹系數,這(zhe)樣就能(neng)在達(da)(da)到一定范(fan)圍的(de)臨界點(dian)溫度時(shi)發(fa)生形變使觸點(dian)結合,達(da)(da)到通(tong)電的(de)目的(de),低于這(zhe)個(ge)溫度范(fan)圍后回復到起始位置,斷開(kai)線路。這(zhe)是機械式的(de)。在溫控開(kai)關表(biao)面(mian)會標(biao)有(you)數值,例如78或者83等等。
2、還有熱電(dian)偶式的(de),也(ye)就是(shi)不同的(de)溫度有不同的(de)電(dian)阻,行車電(dian)腦獲取數(shu)據后作出開啟或關閉的(de)指令。
3、溫控開(kai)(kai)關是控制(zhi)風扇(shan)轉(zhuan)動的(de)(de)當水溫88度(du)(du)左右溫控開(kai)(kai)關控制(zhi)風扇(shan)底(di)數(shu)轉(zhuan)100度(du)(du)以(yi)上(shang)風扇(shan)高速轉(zhuan)溫控開(kai)(kai)關一(yi)般安(an)裝在水箱上(shang)或水管到發動機缸蓋的(de)(de)地(di)方有(you)3根線(xian)的(de)(de)兩根線(xian)的(de)(de)看車(che)型不等。
4、 三條線的那一定是電子溫控才有,一條是開關(guan)那過來(lai)的負級 一條是接到干燥瓶(ping)那個保護空(kong)調系統的開關(guan) 還有一條是電源 。
汽(qi)車(che)(che)(che)溫(wen)(wen)(wen)控(kong)(kong)(kong)開關在空(kong)(kong)調(diao)(diao)操作面板上(shang),溫(wen)(wen)(wen)度(du)(du)傳感器安裝在空(kong)(kong)調(diao)(diao)進風(feng)(feng)口(kou)位置。汽(qi)車(che)(che)(che)上(shang)的(de)溫(wen)(wen)(wen)控(kong)(kong)(kong)開關是(shi)起溫(wen)(wen)(wen)度(du)(du)控(kong)(kong)(kong)制(zhi)(zhi)的(de)作用(yong),主要是(shi)空(kong)(kong)調(diao)(diao)溫(wen)(wen)(wen)控(kong)(kong)(kong),其(qi)是(shi)控(kong)(kong)(kong)制(zhi)(zhi)空(kong)(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji)的(de),當設置的(de)溫(wen)(wen)(wen)度(du)(du)為25度(du)(du)時車(che)(che)(che)廂溫(wen)(wen)(wen)度(du)(du)達到(dao)了25度(du)(du)就會關停(ting)壓(ya)(ya)縮機(ji)(ji),風(feng)(feng)扇還會運(yun)轉的(de),因此溫(wen)(wen)(wen)控(kong)(kong)(kong)開關是(shi)控(kong)(kong)(kong)制(zhi)(zhi)空(kong)(kong)調(diao)(diao)壓(ya)(ya)縮機(ji)(ji),而不(bu)是(shi)控(kong)(kong)(kong)制(zhi)(zhi)風(feng)(feng)扇的(de)。汽(qi)車(che)(che)(che)溫(wen)(wen)(wen)控(kong)(kong)(kong)開關壞(huai)了的(de)表(biao)現(xian):汽(qi)車(che)(che)(che)在運(yun)行中(zhong)冷卻系統(tong)溫(wen)(wen)(wen)度(du)(du)過高會出現(xian)水溫(wen)(wen)(wen)表(biao)指(zhi)針(zhen)指(zhi)向紅線(xian),水溫(wen)(wen)(wen)警(jing)示燈閃亮,甚至沸騰;發動(dong)機(ji)(ji)在加速時伴隨有明顯(xian)的(de)金屬(shu)敲擊聲,同時有動(dong)力不(bu)足、水溫(wen)(wen)(wen)警(jing)示燈閃爍、難(nan)以熄火等現(xian)象。
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