進氣溫(wen)(wen)度傳(chuan)感器(qi)是(shi)一(yi)個負溫(wen)(wen)度系數熱敏(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu),當溫(wen)(wen)度升高時,電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)阻(zu)(zu)(zu)值減小(xiao),當溫(wen)(wen)度降(jiang)低時,電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)阻(zu)(zu)(zu)值增大,隨著電(dian)(dian)(dian)(dian)路中電(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)的(de)(de)變(bian)化(hua),導致電(dian)(dian)(dian)(dian)壓的(de)(de)變(bian)化(hua),從而產生不同(tong)的(de)(de)電(dian)(dian)(dian)(dian)壓信(xin)(xin)號(hao),完成控制系統的(de)(de)自(zi)動操作。在冷車時,進氣溫(wen)(wen)度傳(chuan)感器(qi)的(de)(de)信(xin)(xin)號(hao)與發動機水溫(wen)(wen)傳(chuan)感器(qi)信(xin)(xin)號(hao)基(ji)本(ben)相同(tong),在熱車時,其(qi)信(xin)(xin)號(hao)電(dian)(dian)(dian)(dian)壓大約是(shi)水溫(wen)(wen)傳(chuan)感器(qi)的(de)(de)2~3倍(bei)。
進(jin)(jin)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du)傳感(gan)(gan)器(qi)的(de)作用(yong)是檢(jian)測發動(dong)機的(de)進(jin)(jin)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du),送給ECU作為修(xiu)正(zheng)(zheng)噴(pen)油量的(de)參考。該傳感(gan)(gan)器(qi)在電(dian)控燃油噴(pen)射系統中(zhong)測量進(jin)(jin)氣(qi)(qi)溫(wen)(wen)度(du)(du)(du),并(bing)輸入到ECU,用(yong)以(yi)修(xiu)正(zheng)(zheng)體積(ji)型空氣(qi)(qi)流(liu)量傳感(gan)(gan)器(qi)由于大氣(qi)(qi)溫(wen)(wen)度(du)(du)(du)變(bian)化帶來的(de)進(jin)(jin)氣(qi)(qi)質量檢(jian)測的(de)誤差。
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