Claims
- 1. A device for reducing soot content of exhaust gases of inernal combustion engines, comprising a porous ceramic body adapted to be located in an exhaust gas conduit and having a plurality of lengthwise extending polygonal channels lying side-by-side in a checkerboard pattern each with an inlet and an outlet, means for closing inlets of alternate ones of said channels in a checkerboard pattern and for closing outlets of remaining ones of said channels in a checkerboard pattern, said means for closing the inlets and outlets being arranged so that alternately adjacent channels are closed, and a tubular knitted metal wire fabric comprising a filling of at least one half a cross-sectional area of a channel, acting as a catalyst for burning soot accommodated in all channels of one of said alternate and remaining ones of said channels.
- 2. A device according to claim 1, wherein all of said alternate channels have open outlets and all of said remaining channels have open inlets, said wire fabric filling at least one-half a cross-sectional area of all of said alternate channels having open outlets.
- 3. A device according to claim 1, wherein said means for closing includes a separate closure member arranged at each end of said body for supporting said body therebetween and being spaced from respective inlets and outlets of said channels, and a resilient mesh ring provided between said ceramic body and each of said closure members, each ring extending around said checkerboard pattern of one of said inlets and outlets.
- 4. A device according to claim 3, wherein said wire fabric in all channels of one of said alternate and remaining ones of said channels has the shape of at least one layer of lining which has an opening through the center thereof.
- 5. A device according to claim 1, wherein said wire fabric is catalytically coated for effecting burning of soot.
- 6. A device according to claim 5, wherein all of said alternate channels have open outlets and all of said remaining channels have open inlets, said wire fabric filling at least one-half a cross-sectional area of all of said alternate channels having open outlets.
- 7. A device according to claim 6, wherein the cross-sectional area of each channel is from 30 to 50 mm.sup.2.
- 8. A device for reducing soot content of exhaust gases of internal combustion engines, comprising a porous ceramic body adapted to be located in an exhaust gas conduit and having a plurality of length-wise extending rectangular channels lying side-by-side in a checker board pattern each with an inlet and an outlet, means for closing all inlets of alternate ones of said channels in a checkboard pattern and for closing all outlets of remaining ones of said channels in a checkboard pattern, said means for closing comprising plugs in said inlets and outlets respectively, said plugs being arranged so that alternately adjacent channels are closed, and a tubular knitted metal wire fabric filling at least one half a cross-sectional area of a channel acting as a catalyst for burning soot accommodated in all channels of one of said alternate and remaining ones of said channels, said means for closing including a separate closure member arranged at each end of said body for supporting said body there between and being spaced from respective inlets and outlets of said channels, a resilient mesh ring provided between said ceramic body and each of said closure members, each ring extending around said checkerboard pattern of one of said inlets and outlets.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3217357 |
May 1982 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 475,093, filed Mar. 14, 1983, now abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
148607 |
Nov 1981 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
475093 |
Mar 1983 |
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