Method and apparatus for removing NOx and soot from engine exhaust gas
US6843054B2 · kind B2 · utility
33Cited by
53References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Jan 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An emission abatement assembly includes a pair of NOx traps arranged in a parallel arrangement. A fuel reformer generates a reductant fluid in the form of a reformate gas which is selectively supplied one of the traps during regeneration thereof. During regeneration of the trap, engine exhaust gas is directed through the other trap. A catalyzed soot filter is positioned downstream of the NOx traps. A method of operating an emission abatement assembly is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.