Patent ID: 7566425
Filing Date: 2009-07-28
Classification: B01D,F01N,Y02A,Y02C,Y02T

Abstract:
1. A engine exhaust system for catalytically converting carbon monoxide, nitrous oxide, and hydrocarbon pollutants into non-pollutant species and for trapping particulate matter, comprising: a engine exhaust; a housing; an inlet port formed in the housing and fluidically connected to the gasoline engine exhaust; an outlet port formed in the housing and fluidically connected to the atmosphere; a plurality of inlet channels in the housing; a plurality of outlet channels in the housing arranged adjacent to the inlet channels; a plurality of substantially fibrous non-woven porous walls comprising intertangled refractory fibers separating the inlet channels from the outlet channels in the housing; and at least one catalyst material disposed on the porous walls, the at least one catalyst material adapted to convert carbon monoxide, nitrous oxide, and hydrocarbons into non-pollutant species, and wherein the plurality of substantially fibrous non-woven porous walls are adapted to trap particulate matter.