Title:
AN EXHAUST GAS FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2003/044339
Kind Code:
A1
Abstract:
This invention relates to a filter device to treat the exhaust gas of an internal combustion engine by a catalyst. Said device comprises a housing which is provided with opposite first and second end faces, an inlet opening positioned in the first end face, an outlet opening positioned in the second face, a first filter casing positioned inside the housing, its one end connected with the second end face, and the other end being closed&semi a second filter casing positioned inside the first filter casing, its one end connected with the second end face, and the other end being closed, and its inner chamber being communicated with the outlet opening. Said first and second filter casing are form of metal mesh, and provided with catalyst in a space between them. Exhaust gas can flow from outside of the first filter casing into the second filter casing. With this invention, it is possible to purify particular, CO, HC and NOx in exhaust gas.
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Inventors:
LI SHUSHENG (CN)
Application Number:
PCT/CN2002/000836
Publication Date:
May 30, 2003
Filing Date:
November 22, 2002
Export Citation:
Assignee:
LI SHUSHENG (CN)
International Classes:
B01D53/94; F01N1/08; F01N3/02; F01N3/035; F01N3/037; F01N3/08; F01N3/28; (IPC1-7): F01N3/035; B01D46/00; B01J21/00
Foreign References:
| US6102976A | 2000-08-15 | |||
| US3824790A | 1974-07-23 | |||
| US5627351A | 1997-05-06 | |||
| US5814118A | 1998-09-29 |
Attorney, Agent or Firm:
CHINA SCIENCE PATENT & TRADEMARK AGENT LTD. (Bldg. B Tsinghua Tongfang Hi-Tech Plaza, No.
1, Wangzhuang Rd, Haidian District Beijing 3, CN)
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