Reduction of particulate, NOx, and ammonia emissions
US8875489B2 · kind B2 · utility
0Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2012 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Jul 2, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling emissions from an engine includes reducing trapped nitrogen oxides to ammonia on an LNT catalyst while concurrently oxidizing soot accumulated on the LNT catalyst, and, flowing the ammonia so formed to an SCR catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.