EXHAUST GAS PURIFICATION CATALYST FILTER FOR GASOLINE ENGINE

Title:

EXHAUST GAS PURIFICATION CATALYST FILTER FOR GASOLINE ENGINE

Document Type and Number:

WIPO Patent Application WO/2022/163720

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide an exhaust gas purification catalyst filter which has enhanced soot collecting performance without increasing pressure loss caused by the formation of a catalyst layer in a partition wall of a wall flow-type substrate. This exhaust gas purification catalyst filter for a gasoline engine purifies exhaust gas from a gasoline engine and comprises: a wall flow-type substrate in which an introduction-side cell having an opened end part on an exhaust gas introduction side, and a discharge-side cell adjacent to the introduction-side cell and having an opened end part on an exhaust gas discharge side are defined by a porous partition wall; and a catalyst layer formed in a pore of the partition wall, wherein the absolute value of the uneven distribution degree of the catalyst layer formed in the pore of the partition wall is at most 4.50, the wash coat amount, excluding the mass of a platinum group, in the catalyst layer formed in the pore of the partition wall is 40-50 g/L, the catalyst layer formed in the pore of the partition wall is a single layer, and the catalyst layer does not contain Ba.

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WO/2020/190828	DEHYDROGENATION CATALYST WITH OPTIMUM MODIFIER PROFILE INDEX
WO/2007/131665	CARRIER BODY FOR EXHAUST GAS AFTERTREATMENT WITH DISPERSED CATALYST ARRANGEMENT

Inventors:

MORI TAKESHI (JP)
OTSUKA SHINICHIRO (JP)
HATAKEYAMA YOSHIAKI (JP)
SHIROTORI MAHIRO (JP)

Application Number:

PCT/JP2022/002943

Publication Date:

August 04, 2022

Filing Date:

January 26, 2022

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
N E CHEMCAT CORP (JP)

International Classes:

B01J35/04; B01D53/94; B01J23/68; F01N3/022; F01N3/035; F01N3/10; F01N3/24; F01N3/28

Foreign References:

JP2020025954A	2020-02-20
JP2020025899A	2020-02-20
JP2020203255A	2020-12-24
JP2008253961A	2008-10-23
JP2019194478A	2019-11-07

Attorney, Agent or Firm:

INABA, Yoshiyuki et al. (JP)

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