Diesel exhaust article and catalyst compositions therefor
US7673448B2 · kind B2 · utility
16Cited by
41References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2006 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Feb 16, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A self-cleaning diesel exhaust particulate filter system is disclosed wherein burn-off of collected particulate matter is accomplished at normal exhaust gas temperatures, the filter system being provided with a catalyst mixture of a co-formed ceria-zirconia composite and, optionally, a base metal oxide, the presence of which allows regeneration of filters at temperatures that are readily achieved in diesel exhaust systems, including operating conditions that are at low load where lower exhaust temperatures exist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.