Substrate having porous sheet(s) for treating exhaust gases of combustion engines
AssigneeEcocat Oy
InventorsAulis Vakkilainen, Reijo Lylykangas, Ritva Heikkinen, Teuvo Manula, Matti Harkonen, Ari Lievonen
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Abstract
The object of the invention is a porous sheet(s) for treating exhaust gases of combustion engines in open channels. According to the invention at least part of the porous sheet has a covering support having pores over 10 nm and coarse particles over 1.4 μm.
Claims13
A metal substrate having open channels for treating exhaust gases of combustion engines, said substrate comprising corrugated porous sheets having wires, which has been covered, and openings, which are partially filled by a support having the median pore size of pores over 10 nm and having the median particles size over 1.4 μm and having the area mass of said support from 20 to 200 g/m2 and the BET specific surface area of said support is from 30 to 300 m2/g, and that said metal substrate additionally comprises open channels with both sizes of said porous sheet.
A method for manufacturing a metal substrate comprising corrugated porous sheets for treating exhaust gases of combustion engines in open channels, wherein the wires of said porous sheet are covered and openings of said mesh sheet are partially filled by a support having the median pore size of pores over 10 nm and having the median particles size over 1.4 μm and having the area mass of said support from 20 to 200 g/m2 and the BET specific surface area of said support is from 30 to 300 m2/g and that there are open channels with both sizes of said porous sheet.
Dependencies are inferred from the claim text.