-
公开(公告)号：US20210164378A1
公开(公告)日：2021-06-03
申请号：US17046517
申请日：2019-04-17
Applicant: Mitsui Mining & Smelting Co., Ltd. , HONDA MOTOR CO., LTD.
Inventor： Hiroki KURIHARA , Yusuke NAGAI , Shingo AKITA , Yoshinori ENDO , Takeshi MORI , Takayuki WATANABE , Tomoko TSUYAMA
Abstract: In an exhaust gas purifying catalyst according to the present invention, a substrate includes inflow-side cells, outflow-side cells, and porous partition walls, each partition wall separating the inflow-side cell from the outflow-side cell. Catalyst portions include: first catalyst portions, each first catalyst portion being provided on a surface of the partition wall that faces the inflow-side cell on an upstream side in an exhaust gas flow direction, and second catalyst portions, each second catalyst portion being provided on a surface of the partition wall that faces the outflow-side cell on a downstream side, and the exhaust gas purifying catalyst satisfies the following expressions: IB1/IA×100≥60%, IB2/IA×100≥60%, IC1/IA×100≥3%, and IC2/IA×100≥3%, where IA, IB1, IB2, IC1, and IC2 represent pore volumes, definitions of which can be found in the specification.
-
公开(公告)号：US20220226763A1
公开(公告)日：2022-07-21
申请号：US17577394
申请日：2022-01-18
Applicant: HONDA MOTOR CO., LTD.
Inventor： Chiaki SEKI , Masanori HASHIMOTO , Naohiro SATO , Tomoko TSUYAMA , Michiya YANO , Yoshiaki HATAKEYAMA
Abstract: An exhaust emission control filter is provided that can reduce the pressure loss and has a high exhaust conversion performance and particulate matter capturing performance. An exhaust emission control filter includes: a filter base material having a wall flow structure; and an exhaust conversion catalyst carried on partitions of the filter base material. The median gas pore diameter (D50) of the filter base material after the exhaust conversion catalyst is carried on the filter base material is 17 μm or more. The half width of the gas pore distribution of the filter base material ranges from 7 to 15 μm. The exhaust conversion catalyst is ununiformly carried in a high-density layer having a relatively high density of the exhaust conversion catalyst and a low-density layer having a relatively low density of the exhaust conversion catalyst. The maximum gas pore diameter of the high-density layer is 11.7 μm or less.
-
公开(公告)号：US20210164377A1
公开(公告)日：2021-06-03
申请号：US17046584
申请日：2019-04-17
Applicant: Mitsui Mining & Smelting Co., Ltd. , HONDA MOTOR CO., LTD.
Inventor： Hiroki KURIHARA , Yusuke NAGAI , Shingo AKITA , Yoshinori ENDO , Takeshi MORI , Takayuki WATANABE , Tomoko TSUYAMA
Abstract: There is provided an exhaust gas purifying catalyst including a substrate and catalyst portions. The substrate includes an inflow-side cells, outflow-side cells, and porous partition walls, each partition wall separating the inflow-side cell from the outflow-side cell. The catalyst portion includes: (group A) first catalyst portions, each first catalyst portion being provided on a surface of the partition wall that faces the inflow-side cell on an upstream side in an exhaust gas flow direction; and (group B) second catalyst portions being provided on a surface of the partition wall that faces the outflow-side cell on a downstream side in the exhaust gas flow direction. Each catalyst portion of one of group A and group B includes at least one oxidizing catalyst layer and at least one reducing catalyst layer, and each catalyst portion of the other of group A and group B includes at least one oxidizing catalyst layer and/or at least one reducing catalyst layer.
-
公开(公告)号：US20220226760A1
公开(公告)日：2022-07-21
申请号：US17647732
申请日：2022-01-11
Applicant: HONDA MOTOR CO., LTD.
Inventor： Takeshi MORI , Tomoko TSUYAMA , Takayuki WATANABE
Abstract: To provide an exhaust gas purification filter having a high capability of collecting particulate matter. The exhaust gas purification filter includes a filter base material having a wall flow structure and an exhaust gas purification catalyst. A wash coating amount of the exhaust gas purification catalyst ranges from 60 to 110 g/L or less. When the exhaust gas purification filter is divided into an upstream part, a middle part, and a downstream part, and average values of catalyst area ratios of the exhaust gas purification catalyst supported by surfaces of the partition walls are acquired at predetermined locations in cells on an inflow side and cells on an outflow side, a minimum value, among the average values, is 28% or greater. A maximum value, among sizes of pores in the partition walls after the exhaust gas purification catalyst is supported, is 14.6 μm or less.
-
-
-
Search Results
4
records
(took 0.013 seconds)
