Lean nitrogen oxide emission control system and method
US8041498B2 · kind B2 · utility
11Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2008 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | May 7, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2900/1622
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A control system comprising an NH3 storage level determination module that determines an NH3 storage level in an exhaust system, and a fuel control module that controls an air-to-fuel (A/F) ratio in an engine based on the NH3 storage level. A method comprising determining an NH3 storage level in an exhaust system, and controlling an A/F ratio in an engine based on the NH3 storage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.