Device i.e. solid particle filter, for processing e.g. carbon monoxide emissions, in diesel engine exhaust line of car, has reducer compensating on-board reducer in its action of nitrogen oxide catalytic reduction during reduction catalysis

摘要

The device has porous filtration walls for filtering solid particles. An upstream selective catalytic reduction catalyst (15) is arranged in a flow direction of gases from an engine (20) toward an exhaust exit (21) of a vehicle. A nitrogen oxide reducer formation catalyst (16) is used for formation of reducer of nitrogen oxides from a gas mixture to be processed. The formed reducer compensates an on-board reducer in its action of catalytic reduction of nitrogen oxides during selective catalytic reduction catalysis. The catalysts are impregnated on the walls. An independent claim is also included for an exhaust line.