Diesel engine exhaust treatment system
US9441517B2 · kind B2 · utility
3Cited by
27References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2010 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A diesel engine exhaust treatment system is provided which includes a diesel oxidation catalyst and a diesel particulate filter, where a first SCR catalyst is positioned at the inlet of the diesel particulate filter, and a second SCR catalyst is coated on the filter. The first and second SCR catalysts each have a low loading, such that a lower backpressure is achieved over the use of a single SCR-coated diesel particulate filter at higher catalyst loadings. The exhaust treatment system also provides effective catalyst efficiency for removal of NOx and other gaseous emissions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.