TWC system for fuel cut NOx control
US11904299B2 · kind B2 · utility
6Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | Jun 11, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Oct 9, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This disclosure is directed to catalyst compositions, catalytic articles for purifying exhaust gas emissions and methods of making and using the same. In particular, the disclosure relates to a catalytic article including a catalytic material on a substrate, wherein the catalytic material has a first layer and a second layer. The first layer provides effective lean NOx trap functionality and the second layer provides effective three-way conversion of carbon monoxide, hydrocarbons, and nitrogen oxides (NOx).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.