Title:
METAL CATALYST DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/137275
Kind Code:
A1
Abstract:
This metal catalyst device (1) includes: a metal internal structure (11) that is supported by an exhaust passage (31) and has a plurality of holes through which exhaust gas is made to pass, and in which a precious metal for purifying exhaust gas is loaded on a partition wall section; and a metal external structure (21) formed on the outer periphery of the internal structure (11) in a cross section orthogonal to the direction in which exhaust gas flows in the internal structure (11) and having no through holes through which exhaust gas passes. The external structure (21) is formed on part or at least part of the outer periphery of the internal structure (11) in the direction in which exhaust gas flows and includes one or more metal connection sections (22). The external structure (21) formed on at least part of the outer periphery of the internal structure (11) in the direction in which exhaust gas flows is configured so that the minimum thickness of the parts other than the one or more metal connection sections (22) in the external structure (21) in a cross section orthogonal to the direction in which exhaust gas flows is thinner than the minimum thickness of the one or more metal connection sections (22) in the external structure (21) in the cross section orthogonal to the direction in which exhaust gas flows.
Inventors:
UHARA TAKEHIRO (JP)
TAKAHASHI NAOHISA (JP)
KURITA HIROTAKA (JP)
NAGAMOTO HIROYUKI (JP)
KURIMOTO KEISUKE (JP)
TAKAHASHI NAOHISA (JP)
KURITA HIROTAKA (JP)
NAGAMOTO HIROYUKI (JP)
KURIMOTO KEISUKE (JP)
Application Number:
PCT/JP2020/047626
Publication Date:
June 30, 2022
Filing Date:
December 21, 2020
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F01N3/035; F01N3/022
Foreign References:
| JPH03157139A | 1991-07-05 | |||
| JPH0379838U | 1991-08-15 | |||
| JPH06126191A | 1994-05-10 | |||
| JPH0427443A | 1992-01-30 | |||
| JP2011043085A | 2011-03-03 |
Attorney, Agent or Firm:
KAJI, SUHARA & ASSOCIATES (JP)
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