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氧傳感器

關(guān)注你的愛車 多久更換一次氧傳感器?

發(fā)布日期:2022-10-09 點擊率:26

  在使用三元催化轉(zhuǎn)換器以減少排氣污染的發(fā)動機上,氧傳感器是必不可少的元件。由于混合氣的空燃比一旦偏離理論空燃比,三元催化劑對CO、HC和NOx的凈化能力將急劇下降,故在排氣管中安裝氧傳感器,用以檢測排氣中氧的濃度,并向ECU發(fā)出反饋信號,再由ECU控制噴油器噴油量的增減,從而將混合氣的空燃比控制在理論值附近。

  那么,我們改多久更換一次氧傳感器呢?

  推薦的更換間隔公里數(shù),1976~90年代初期非加熱型氧傳器48000~80000KM,80年代中期~90年代中期第一代加熱型氧傳感器96000KM,90年代中期以后第二代加熱型氧傳感器160000KM。一般沒有具體年限,現(xiàn)在的氧傳感器多半能正常使用10萬公里以上,當氧傳感器警告指示亮起,或者有關(guān)故障代碼出現(xiàn)時候,請更換。(這玩意和手動檔變速箱油一樣,廠家沒有固定保養(yǎng)周期,連換不換都沒說。)

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