AUTOMOBILE EXHAUST GAS CLEANING CATALYST METAL CARRIER AND PRODUCTION METHOD THEREFOR

Title:

AUTOMOBILE EXHAUST GAS CLEANING CATALYST METAL CARRIER AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2001/026808

Kind Code:

A1

Abstract:

An automobile exhaust gas cleaning catalyst metal carrier superior in durability having a thermal fatigue resistance capable of withstanding high-temperature, high-speed exhaust gas flows and rapid heating and cooling and also superior in cleaning performance. The automobile exhaust gas cleaning catalyst metal carrier includes a metal honeycomb body formed by superposing a flat metal foil and a corrugated metal foil and spirally rolling them up, and a metal sleeve surrounding them, wherein the free flat foil used at the start of rolling up the metal foils and extending radially or chord-wise of the cylindrical hollow portion of the honeycomb body is subjected to such a treatment as being hollowed out for removal by axially machining or being pressed to extend along the innermost peripheral portion of the honeycomb body, the honeycomb body satisfying the relation, $g(F)B $m(F) 10 / 100 x $g(F)A where $g(F)A is the outer diameter and $g(F)B is the inner diameter.

Inventors:

OKAZAKI YUICHI (JP)
KASUYA MASAYUKI (JP)
SUZUKI ATSUSHI (JP)
YAMAKAWA YOSHIHIRO (JP)
TAMURA HIDEKI (JP)

Application Number:

PCT/JP2000/007095

Publication Date:

April 19, 2001

Filing Date:

October 13, 2000

Export Citation:

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Assignee:

NIPPON STEEL CORP (JP)
FUJI HEAVY IND LTD (JP)
OKAZAKI YUICHI (JP)
KASUYA MASAYUKI (JP)
SUZUKI ATSUSHI (JP)
YAMAKAWA YOSHIHIRO (JP)
TAMURA HIDEKI (JP)

International Classes:

B01D53/86; B01J35/04; F01N3/28; F01N13/18; (IPC1-7): B01J35/04; B01D53/94; F01N3/28

Foreign References:

JPH09300031A	1997-11-25
JPH08294632A	1996-11-12
JPH10156458A	1998-06-16
JPH09150217A	1997-06-10

Other References: