发明名称 |
EXHAUST EMISSION CONTROL DEVICE |
摘要 |
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. |
申请公布号 |
US5228892(A) |
申请公布日期 |
1993.07.20 |
申请号 |
US19920840071 |
申请日期 |
1992.02.25 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
AKITSU, YASUO;MASAKI, HIDEYUKI;OKAHARA, HIROYUKI |
分类号 |
B01D46/00;F01N3/02;F01N3/022;F01N3/023;F01N3/027;F01N3/05;F01N13/04;F02B3/06;F23J15/02 |
主分类号 |
B01D46/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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