Control apparatus for an internal combustion engine
US9494066B2 · kind B2 · utility
2Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2011 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jun 2, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A controller is provided for an engine comprising urea-SCR catalyst, a urea-water supply section, a low pressure gas recirculating section including a low pressure EGR pipe forming a low pressure EGR passage and a low pressure EGR valve. The controller controls an amount of a fuel supplied to the engine, and an opening degree of the low pressure EGR valve. The controller supplies the urea-water to the urea-SCR catalyst in such a manner that an ammonia flowing out from the urea-SCR catalyst neutralizes an acid condensed water produced by a gas passing through the low pressure EGR passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.