Device for treating polluting emissions of a heat engine by catalytic reduction which does not require an on-board reducer

摘要

The device has porous filtration walls for filtering solid particles. An upstream selective catalytic reduction catalyst is arranged in a flow direction of gases from an engine toward an exhaust exit of a vehicle. A nitrogen oxide reducer formation catalyst is used for formation of reducer of nitrogen oxides from a gas mixture to be processed in a cracked hydrocarbon source i.e. burner (20). The catalysts are impregnated on the walls. Inlet channels and outlet channels of the device are arranged in two to two alternation and separated from each other by the walls. An independent claim is also included for an exhaust line.