公开(公告)号：US20220193649A1

公开(公告)日：2022-06-23

申请号：US17599556

申请日：2020-03-13

Applicant: HONDA MOTOR CO., LTD.

Inventor： Chiaki SEKI ,  Yusuke IMAI ,  Atsushi FURUKAWA ,  Yuichi MATSUO ,  Naohiro SATO

IPC: B01J35/04 ,  B01J21/08 ,  B01J23/46 ,  B01J23/10 ,  B01J35/10 ,  B01D53/94 ,  F01N3/035 ,  B01D46/00 ,  F01N3/10 ,  F01N3/022

Abstract: Provided is an exhaust purification filter that is able to reduce pressure loss and that has high exhaust purification performance and particulate matter trapping performance. This exhaust purification filter comprises a filter substrate having a wall flow structure, and an exhaust purification catalyst supported on a partition wall of the filter substrate. The volume-based median pore diameter (D50) of the filter substrate is 18 μm or greater, the full width at half maximum of the pore distribution of the filter substrate is 7 μm to 15 μm, and the exhaust purification catalyst is supported in an unevenly distributed manner in a high-density layer in which the density of the exhaust purification catalyst is relatively high and a low-density layer in which the density of the exhaust purification catalyst is relatively low.

公开(公告)号：US20220170397A1

公开(公告)日：2022-06-02

申请号：US17599540

申请日：2019-03-29

Applicant: HONDA MOTOR CO., LTD.

Inventor： Chiaki SEKI ,  Yusuke IMAI ,  Atsushi FURUKAWA ,  Yuichi MATSUO ,  Naohiro SATO

IPC: F01N3/035 ,  F01N3/022 ,  F01N3/10

Abstract: The present invention provides an exhaust purification filter with which pressure loss can be reduced, the filter having high exhaust purification performance and granular-substance-filtering performance. The exhaust purification filter comprises a filter base material having a wall flow structure, and an exhaust purification catalyst supported on a dividing wall of the filter base material, the exhaust purification filter being such that: a median pore diameter (D50) of the filter base material according to a volumetric basis is 15 μm or greater; and the exhaust purification catalyst is unevenly supported on a high-density layer, in which the density of the exhaust purification catalyst is relatively high, and a low-density layer, in which the density of the exhaust purification catalyst is relatively low.

公开(公告)号：US20240328335A1

公开(公告)日：2024-10-03

申请号：US18190132

申请日：2023-03-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Azusa TANAKA ,  Yuichi MATSUO ,  Yoshiyuki NAKANISHI

IPC: F01N3/20 ,  B01D53/94 ,  B01J21/06 ,  B01J23/46 ,  B01J37/02 ,  B01J37/08

CPC classification number: F01N3/2026 ,  B01D53/9495 ,  B01J21/066 ,  B01J23/464 ,  B01J37/0225 ,  B01J37/08 ,  B01D2255/1025 ,  B01D2255/20715 ,  B01D2258/01 ,  F01N2330/02 ,  F01N2370/02

Abstract: Provided is an exhaust purification device which is provided in the exhaust passage of an internal combustion engine and purifies the exhaust gas of the internal combustion engine, the exhaust purification device including: a metal support having a flow path in which the exhaust gas flows; and a catalyst layer formed on a surface of the metal support, in which the catalyst layer includes a noble metal, and a metal having a different crystal structure than the noble metal.