Diesel exhaust gas purifying filter

Details Diesel exhaust gas purifying filter Diesel exhaust gas purifying filter

2008-06-10

2008-06-10

Griffin, Walter D. (Department: 1797)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S178000, C502S302000, C502S304000, C423S213500, C423S215500

Reexamination Certificate

active

07384612

ABSTRACT:
An exhaust cleanup filter which, even if the exhaust temperature is low as during vehicular driving under low load, can trap PM efficiently to prevent clogging by PM buildup and which also is effective in purifying the exhaust from a diesel engine that does not use any burner or heater to remove PM. The cleanup filter is for purifying the exhaust from diesel engines and comprises particulate ceramic porous bodies that have a three-dimensional network structure, as well as artificial pores and communication channels in the interior, with some of the pores being partially exposed on the surfaces of the porous bodies.

REFERENCES:
patent: 4167852 (1979-09-01), Ludecke
patent: 5000929 (1991-03-01), Horiuchi et al.
patent: 5290530 (1994-03-01), Muramatsu et al.
patent: 5322821 (1994-06-01), Brezny
patent: 5384290 (1995-01-01), Brezny
patent: 5399535 (1995-03-01), Whitman
patent: 0 884 457 (1998-12-01), None
patent: 2002-047916 (2002-02-01), None
“A summary of Japanese Utility Model Publication No. 1992-42212” pp. 1-2, (1992).

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