進氣(qi)溫(wen)(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)是一個負溫(wen)(wen)(wen)(wen)度(du)系數熱(re)敏電(dian)(dian)(dian)阻,當溫(wen)(wen)(wen)(wen)度(du)升高時,電(dian)(dian)(dian)阻阻值減小,當溫(wen)(wen)(wen)(wen)度(du)降低時,電(dian)(dian)(dian)阻阻值增大,隨著電(dian)(dian)(dian)路(lu)中電(dian)(dian)(dian)阻的(de)變(bian)化(hua),導致電(dian)(dian)(dian)壓的(de)變(bian)化(hua),從而產生不(bu)同(tong)的(de)電(dian)(dian)(dian)壓信(xin)(xin)號(hao),完(wan)成控制系統(tong)的(de)自動操作。在冷車(che)時,進氣(qi)溫(wen)(wen)(wen)(wen)度(du)傳(chuan)(chuan)感(gan)器(qi)(qi)的(de)信(xin)(xin)號(hao)與發動機水(shui)溫(wen)(wen)(wen)(wen)傳(chuan)(chuan)感(gan)器(qi)(qi)信(xin)(xin)號(hao)基本相同(tong),在熱(re)車(che)時,其(qi)信(xin)(xin)號(hao)電(dian)(dian)(dian)壓大約是水(shui)溫(wen)(wen)(wen)(wen)傳(chuan)(chuan)感(gan)器(qi)(qi)的(de)2~3倍。
進(jin)氣(qi)溫度傳(chuan)感(gan)器(qi)的作(zuo)(zuo)用是檢測發動機的進(jin)氣(qi)溫度,送給ECU作(zuo)(zuo)為修正噴(pen)油量(liang)的參(can)考(kao)。該(gai)傳(chuan)感(gan)器(qi)在(zai)電控燃油噴(pen)射系統中測量(liang)進(jin)氣(qi)溫度,并輸入到ECU,用以修正體積型空氣(qi)流量(liang)傳(chuan)感(gan)器(qi)由于大氣(qi)溫度變(bian)化帶來的進(jin)氣(qi)質量(liang)檢測的誤(wu)差。
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