I-OEM: 844144466 , 5WK9 6711C , 5WK96711C
Ukufundwa okunembayo, kwakamuva okuvela ohlelweni lwegesi ephumayo kuyadingeka ukuze kusetshenziswe igesi ephumayo esebenzayo.Uma kunemithetho eqinile yokukhipha umoya, kungase kudingeke izinzwa ezengeziwe njengenzwa ye-nitrogen oxide.Le nzwa isetshenziselwa ukulawula inani elithathiwe le-urea kumasistimu okunciphisa i-catalytic (SCR), ukunciphisa i-NOx kanye nokuqapha izingxenye ze-SCR (ukuxilongwa okusebhodini).Uhlelo lwe-SCR lungasetshenziswa ngempumelelo enkulu nakakhulu kusetshenziswa inzwa ye-multigas enesignali ehlanganisiwe ekhethiwe ye-ammonia.