Patent ID: 6669913
Filing Date: 2003-12-30
Classification: B01D,F01N,Y10S

Abstract:
A combination catalytic converter and filter for internal combustion engine exhaust comprising in a single unitary member pleated filter media and upper and lower boundary layers defining a plurality of axially extending flow channels having first and second serially sequential axial sections, one of said first and second sections being a catalytic section treated with a catalyst for said exhaust, the other of said first and second sections being a filter section with alternately sealed said channels forcing exhaust to flow through said pleated filter media, wherein said channels extend axially from upstream to downstream, said first section having a first upstream end and a first downstream end, said second section having a second upstream end and a second downstream end, said second upstream end being axially contiguous to and forming an axial junction with said first downstream end, wherein exhaust flows axially from said first upstream end then to said axial junction then axially to said second downstream end, and wherein said filter section is formed between axially spaced first and second sets of alternating blocking sealants in said channels, said first set of sealants being at said axial junction, said second set of sealants being at one of said second downstream end and said first upstream end, said first set of sealants being axially spaced between said first upstream end and said second downstream end.