System, method, and apparatus to engage alternate reductant in a NOx reduction system
US8783017B2 · kind B2 · utility
2Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2011 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Jul 21, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust aftertreatment process including providing a selective catalytic reduction (SCR) catalyst disposed in an exhaust stream of an internal combustion engine; determining that a temperature of the exhaust stream is not within an NH3 based SCR range; and providing an amount of unburned hydrocarbon (UHC) to the SCR catalyst in response to the temperature of the exhaust stream not being within an NH3 based SCR range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.