High-temperature aging tolerance catalyzed adsorber system for treating internal combustion engine exhaust gas
US6750168B2 · kind B2 · utility
8Cited by
28References
36Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 5, 2000 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | May 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyzed adsorber that is effective and durable in treating exhaust gas from internal combustion engines, and in particular, for adsorbing hydrocarbons contained in engine exhaust gas during cold start, releasing these hydrocarbons when the engine exhaust gas has heated the adsorber to normal operating temperature and catalyzing the conversion of these hydrocarbons to carbon dioxide and water. The catalyzed adsorber has a catalyst overlayer with a non-catalyst overcoat loading of about 1.0 g/in3 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.