Inzwa entsha ye-Nox Sensor Nitrogen Oxide ye-KUMMINS,
I-OEM:2872236 , 5WK9 6691,5WK96691
Uma i-DEF eningi kakhulu ijova ekukhishweni, isitini se-SCR singagcwala i-ammonia futhi enye izophuma kumhlangano we-SCR.Lokhu kubizwa ngokuthi "i-ammonia slip".Kunzwa ye-NOx, i-ammonia ne-NOx kubukeka okufanayo.Ukushelela kwe-ammonia kuzobangela inzwa ye-NOx engezansi ukuthi ibike inani elingalungile le-NOx ku-exhaust stream.