Title:
CERAMIC FILTER
Document Type and Number:
WIPO Patent Application WO/2005/089902
Kind Code:
A1
Abstract:
A ceramic filter composed of a honeycomb structure (10) having a number of longitudinally bored cells disposed side by side with the inlet end surfaces (10a) and outlet end surfaces (10b) in the cells for an exhaust gas (G) being alternately sealed. An inlet seal (sealant (16)) is deeper than an outlet seal (sealant (16)). Thereby, the flow of the exhaust gas (G) has a turbulent flow tendency decreased and a laminar flow tendency increased on the inlet side, making it possible to suppress the formation of an offset Oil-Ash stack in the vicinity of the end surface on the inlet side.
Inventors:
MIZUTANI TAKASHI (JP)
Application Number:
PCT/JP2005/005228
Publication Date:
September 29, 2005
Filing Date:
March 23, 2005
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
MIZUTANI TAKASHI (JP)
MIZUTANI TAKASHI (JP)
International Classes:
B01D39/20; F01N3/02; F01N3/022; (IPC1-7): B01D39/20; F01N3/02
Foreign References:
| JP2003254034A | 2003-09-10 | |||
| JP2003269132A | 2003-09-25 | |||
| JP2004113930A | 2004-04-15 | |||
| US4509966A | 1985-04-09 | |||
| JPH0263020U | 1990-05-11 | |||
| JPS6110917U | 1986-01-22 | |||
| JP2002309922A | 2002-10-23 | |||
| JPH02112919U | 1990-09-10 | |||
| EP1470862A2 | 2004-10-27 | |||
| EP1484482A1 | 2004-12-08 |
Other References:
See also references of EP 1733777A4
Attorney, Agent or Firm:
Watanabe, Kazuhira (No.8 Kikuboshi Tower Building 20-18,
Asakusabashi 3-chome, Taito-k, Tokyo 53, JP)
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