A SYSTEM AND METHOD FOR ACCURATELY MEASURING NOX AND NH3 CONTENTS IN EXHAUST FUMES

摘要

The present invention relates to a system (1) for accurately measuring NOx and NH₃ contents in exhaust fumes, including for stoichiometric combustion engines, comprising:- an exhaust (2) to evacuate exhaust fumes connected at its free end to an exhaust evacuation outlet (4),- at least one first sensor (3) adapted to measure NOx and O₂ contents, said first sensor being placed upstream from the exhaust evacuation outlet,- at least one second sensor (61) adapted to measure NOx and O₂ contents, said second sensor being placed downstream from the exhaust evacuation outlet and,- at least one third sensor (62) adapted to measure NH₃, said third sensor being placed downstream from the exhaust evacuation outlet.