Exhaust gas purification device
US10018095B2 · kind B2 · utility
6Cited by
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6Claims
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Assignee
Inventors
Key dates
| Filing date | Oct 25, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Feb 3, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The exhaust gas purification device according to the present invention includes a substrate of wall flow structure having a porous partition wall 16, and a catalyst layer held in internal pores of the partition wall 16. The catalyst layer contains, as a carrier, an OSC material having oxygen storage capacity. In the thickness direction of the partition wall 16, the porosity of the internal pores in inlet regions 16a is 25% or higher, and an average occupation ratio of the catalyst layer held in the internal pores is 75% or lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.