進(jin)氣(qi)溫(wen)(wen)(wen)度傳(chuan)(chuan)感器是一個負溫(wen)(wen)(wen)度系(xi)數熱敏電(dian)(dian)(dian)(dian)阻(zu),當(dang)溫(wen)(wen)(wen)度升高時(shi)(shi),電(dian)(dian)(dian)(dian)阻(zu)阻(zu)值減小,當(dang)溫(wen)(wen)(wen)度降(jiang)低時(shi)(shi),電(dian)(dian)(dian)(dian)阻(zu)阻(zu)值增大,隨著(zhu)電(dian)(dian)(dian)(dian)路(lu)中電(dian)(dian)(dian)(dian)阻(zu)的(de)(de)變(bian)化,導致電(dian)(dian)(dian)(dian)壓的(de)(de)變(bian)化,從而產生不同的(de)(de)電(dian)(dian)(dian)(dian)壓信(xin)(xin)號(hao),完(wan)成控制系(xi)統(tong)的(de)(de)自(zi)動操作。在冷(leng)車時(shi)(shi),進(jin)氣(qi)溫(wen)(wen)(wen)度傳(chuan)(chuan)感器的(de)(de)信(xin)(xin)號(hao)與發動機水溫(wen)(wen)(wen)傳(chuan)(chuan)感器信(xin)(xin)號(hao)基本相同,在熱車時(shi)(shi),其(qi)信(xin)(xin)號(hao)電(dian)(dian)(dian)(dian)壓大約(yue)是水溫(wen)(wen)(wen)傳(chuan)(chuan)感器的(de)(de)2~3倍。
進(jin)(jin)氣(qi)(qi)溫(wen)度(du)傳感(gan)器(qi)的(de)作(zuo)用是檢測(ce)發(fa)動機的(de)進(jin)(jin)氣(qi)(qi)溫(wen)度(du),送給ECU作(zuo)為修正噴(pen)油量(liang)的(de)參考(kao)。該傳感(gan)器(qi)在(zai)電(dian)控燃(ran)油噴(pen)射系(xi)統中測(ce)量(liang)進(jin)(jin)氣(qi)(qi)溫(wen)度(du),并(bing)輸(shu)入到ECU,用以修正體積(ji)型空氣(qi)(qi)流量(liang)傳感(gan)器(qi)由于大氣(qi)(qi)溫(wen)度(du)變化帶來的(de)進(jin)(jin)氣(qi)(qi)質量(liang)檢測(ce)的(de)誤差。
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