Invention Application
- Patent Title: EXHAUST EMISSION CONTROL FILTER
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Application No.: US17577394Application Date: 2022-01-18
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Publication No.: US20220226763A1Publication Date: 2022-07-21
- Inventor: Chiaki SEKI , Masanori HASHIMOTO , Naohiro SATO , Tomoko TSUYAMA , Michiya YANO , Yoshiaki HATAKEYAMA
- Applicant: HONDA MOTOR CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: HONDA MOTOR CO., LTD.
- Current Assignee: HONDA MOTOR CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2021-006575 20210119,JP2022-003375 20220112
- Main IPC: B01D46/24
- IPC: B01D46/24 ; F01N3/035

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.
Information query
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