Wace irin na'urar canza katalytic ce:
Mai canza wutar lantarki wani ɓangare ne na tsarin fitar da hayaki a cikin mota. Na'urar canza wutar lantarki ta catalytic na'urar tsarkake hayaki ce da ke amfani da aikin mai kunna wutar lantarki don canza CO, HC da NOx a cikin iskar gas mai gurbata muhalli zuwa iskar gas marasa lahani ga jikin ɗan adam, wanda kuma aka sani da na'urar canza wutar lantarki ta catalytic. Na'urar canza wutar lantarki ta catalytic tana canza iskar gas guda uku masu cutarwa na Co, HC da NOx a cikin iskar gas mai gurbata muhalli zuwa iskar gas marasa lahani na carbon dioxide, nitrogen, hydrogen da ruwa ta hanyar amsawar iskar oxygen, amsawar ragewa, amsawar iskar gas ta ruwa da amsawar haɓaka tururi a ƙarƙashin aikin mai kunna wutar lantarki.
Dangane da nau'in tsarkakewa na na'urar canza catalytic, ana iya raba shi zuwa na'urar canza catalytic oxidation, na'urar canza catalytic reduction da na'urar canza catalytic ta hanyoyi uku.
