Title:
EXHAUST PIPE
Document Type and Number:
WIPO Patent Application WO/2022/014612
Kind Code:
A1
Abstract:
This exhaust pipe is provided with: a metal pipe; and an inorganic porous layer that is provided on a portion of the inner surface of the metal pipe, in said portion an exhaust gas passing through. With respect to this exhaust pipe, the inorganic porous layer contains ceramic fibers, while being configured from 15% by mass or more of an alumina component and 45% by mass or more of a titania component; and the titania component contains a rutile-type crystal phase.
Inventors:
OSHITA YUSUKE (JP)
TOMITA TAKAHIRO (JP)
TOMITA TAKAHIRO (JP)
Application Number:
PCT/JP2021/026359
Publication Date:
January 20, 2022
Filing Date:
July 13, 2021
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
F01N13/08; C04B35/46; C04B35/80; C04B38/00; C04B41/87; C23C24/08; F01N13/14; F01N13/16; F16L9/14
Foreign References:
| JPH06239656A | 1994-08-30 | |||
| JP2002292242A | 2002-10-08 | |||
| JP2018031346A | 2018-03-01 |
Attorney, Agent or Firm:
KAI-U PATENT LAW FIRM (JP)
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