Method for reducing pollutant emission in motor vehicles
AssigneeFEV Motorentechnik GmbH
InventorsGerhard Lepperhoff, Hartmut Lüders, Kirsten Hentschel, Bernhard Lüers
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Abstract
A method of reducing pollutants in an exhaust gas of an internal-combustion engine includes the following steps: producing, at a first location, a reactive gas component NO2 from at least one part of the NO content of the exhaust gas by reaction with the oxygen, contained in the exhaust gas, under an energy effect; and reactively converting the NO2 in a pollutant retaining system situated at a second location downstream of the first location as viewed in the flow direction.
Claims6
A method of reducing pollutants in an exhaust gas of an internal-combustion engine, wherein the exhaust gas has a flow direction and contains NO and oxygen;
- comprising the following steps:
- (a) producing, at a first location, a reactive gas component NO2 from at least one part of the NO content by reaction with the oxygen under an energy effect;
- and
- (b) reactively converting the NO2 in a pollutant retaining system situated at a second location downstream of said first location as viewed in said flow direction.
Dependencies are inferred from the claim text.