Title:
排ガス浄化装置
Document Type and Number:
Japanese Patent JP7381372
Kind Code:
B2
Abstract:
Provided is an exhaust gas purification device that ensures an improved purification performance and a suppressed pressure loss. An exhaust gas purification device of the present disclosure includes a honeycomb substrate and an inflow cell side catalyst layer. disposed on a surface on the inflow cell side in an inflow side region of the partition wall. When a gas permeability coefficient of an inflow side partition wall portion including the inflow side region of the partition wall and the inflow cell side catalyst layer is Ka and a gas permeability coefficient of an outflow side partition wall portion including an outflow side region at least from the predetermined position to an outflow side end of the partition wall is Kb, a ratio Ka/Kb of the gas permeability coefficients is within a range of 0.4 or more and 0.8 or less.
Inventors:
Koji Sugiura
Hiroma Nishioka
Naoto Miyoshi
Akemi Sato
Ryota Nakajima
Masatoshi Ikebe
Keisuke Murawaki
Hirotaka Ozato
Hiroma Nishioka
Naoto Miyoshi
Akemi Sato
Ryota Nakajima
Masatoshi Ikebe
Keisuke Murawaki
Hirotaka Ozato
Application Number:
JP2020042686A
Publication Date:
November 15, 2023
Filing Date:
March 12, 2020
Export Citation:
Assignee:
Toyota Motor Corporation
Cataler Co., Ltd.
Cataler Co., Ltd.
International Classes:
B01D53/94; F01N3/28; B01J23/46; B01J35/04; F01N3/022; F01N3/035; F01N3/10; F01N3/24
Domestic Patent References:
| JP2008272737A |
Foreign References:
| WO2018173557A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Hiraki International Patent Office
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