Patent ID: 7282185

Claim:
Apparatus for controlling emissions from an internal combustion engine comprising: an enclosed cylindrical housing a single inlet, said inlet being provided at one end of said housing for connection with said exhaust of said internal combustion engine, said housing also being provided with an outlet for eventual discharge of said exhaust gases, said housing being divided by at least two partitions into a first chamber adjacent said inlet, a second chamber adjacent said first chamber and a third chamber adjacent said second chamber; a honeycomb catalytic cell of annular cross section coaxially disposed in said second chamber; and a tubular member coaxially disposed in said housing extending, uninterrupted, through said first and second chambers and the center of said catalytic cell into said third chamber, exhaust gases from said internal combustion engine flowing through said inlet being uninterrupted and totally confined within said tubular member until exiting and expanding into said third chamber, then through said catalytic cell for conversion of nitrogen oxides, carbon monoxide and unburned hydrocarbons to less noxious components and into said first chamber for eventual discharge through said outlet all without introduction of outside air.