Title:
EXHAUST PIPE
Document Type and Number:
WIPO Patent Application WO/2022/014617
Kind Code:
A1
Abstract:
This exhaust pipe comprises a metal pipe and an inorganic porous layer provided to a site on the inner surface of the metal pipe at which exhaust gas passes through. In the exhaust pipe, the inorganic porous layer has a porosity of at least 45 vol%, contains ceramic fibers, and is configured from at least 15 mass% of an alumina component and at least 45 mass% of a titania component. Furthermore, chromium oxide is included in the inorganic porous layer.
Inventors:
OSHITA YUSUKE (JP)
TOMITA TAKAHIRO (JP)
TOMITA TAKAHIRO (JP)
Application Number:
PCT/JP2021/026364
Publication Date:
January 20, 2022
Filing Date:
July 13, 2021
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
F01N13/14; C04B35/46; C04B35/80; C04B38/00; C04B41/87; C23C24/08; F01N13/16; F16L9/14
Domestic Patent References:
| WO2013081150A1 | 2013-06-06 | |||
| WO2020145366A1 | 2020-07-16 |
Foreign References:
| JPH06239656A | 1994-08-30 | |||
| JPH02225383A | 1990-09-07 | |||
| KR20100061432A | 2010-06-07 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
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