Method for operating a spark-ignition, direct-injection internal combustion engine
US9046051B2 · kind B2 · utility
1Cited by
17References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Apr 2, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A spark-ignition, direct-injection internal combustion engine is coupled to an exhaust aftertreatment system including a three-way catalytic converter upstream of an NH3-SCR catalyst. A method for operating the engine includes operating the engine in a fuel cutoff mode and coincidentally executing a second fuel injection control scheme upon detecting an engine load that permits operation in the fuel cutoff mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.