進氣溫(wen)度(du)(du)傳(chuan)感器(qi)是一個負(fu)溫(wen)度(du)(du)系(xi)數熱敏(min)電(dian)(dian)阻,當(dang)(dang)溫(wen)度(du)(du)升高時,電(dian)(dian)阻阻值(zhi)減小,當(dang)(dang)溫(wen)度(du)(du)降(jiang)低(di)時,電(dian)(dian)阻阻值(zhi)增(zeng)大,隨(sui)著電(dian)(dian)路中(zhong)電(dian)(dian)阻的(de)變(bian)化,導致電(dian)(dian)壓(ya)(ya)的(de)變(bian)化,從而產(chan)生不(bu)同(tong)(tong)的(de)電(dian)(dian)壓(ya)(ya)信號,完成控(kong)制系(xi)統的(de)自動(dong)操作。在(zai)冷車時,進氣溫(wen)度(du)(du)傳(chuan)感器(qi)的(de)信號與發動(dong)機水溫(wen)傳(chuan)感器(qi)信號基本(ben)相(xiang)同(tong)(tong),在(zai)熱車時,其信號電(dian)(dian)壓(ya)(ya)大約是水溫(wen)傳(chuan)感器(qi)的(de)2~3倍。
進(jin)(jin)(jin)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)的(de)作(zuo)用是檢測發動(dong)機的(de)進(jin)(jin)(jin)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du),送給ECU作(zuo)為(wei)修正噴(pen)油量(liang)的(de)參考。該傳感(gan)(gan)器(qi)在電(dian)控燃(ran)油噴(pen)射(she)系統中測量(liang)進(jin)(jin)(jin)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du),并輸入到ECU,用以修正體積型空氣(qi)(qi)流量(liang)傳感(gan)(gan)器(qi)由(you)于(yu)大氣(qi)(qi)溫(wen)(wen)度(du)(du)(du)變化帶來的(de)進(jin)(jin)(jin)氣(qi)(qi)質(zhi)量(liang)檢測的(de)誤差。
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