Exhaust emission control device

Details Exhaust emission control device Exhaust emission control device

1992-02-25

1993-07-20

Nozick, Bernard

Gas separation

Specific media material

Ceramic or sintered

55302, 60311, B01D 4600

Patent

active

052288927

ABSTRACT:
An exhaust emission control device includes a single filter assembly composed of a pair of side plates respectively formed in an L-letter shape in cross-section and integrally assembled in a square framework having inlet and outlet openings, and a plurality of ceramic filter elements aligned in parallel within the square framework and clamped by the side plates. The filter elements are each made of porous ceramic material and have a thin-walled cellular structure square in cross-section formed with a plurality of axially extending passages separated from each other by thin partition walls, wherein a first group of the passages are closed at their one ends in a checked pattern and opened at their other ends to introduce therein exhaust gases to be purified, while a second group of the passages are opened at their one ends to discharge purified gases therefrom and closed at their other ends in a checked pattern.

REFERENCES:
patent: 4238455 (1980-12-01), Ogiwara
patent: 4324701 (1982-04-01), Honda et al.
patent: 4709549 (1987-12-01), Lepperhoff
patent: 4814146 (1989-03-01), Brand et al.
patent: 4859428 (1989-08-01), Brand et al.
patent: 4875335 (1989-10-01), Arai et al.
patent: 5065574 (1991-11-01), Bailey

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