Method of operating a valve apparatus for an internal combustion engine
US7874271B2 · kind B2 · utility
1Cited by
82References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 2008 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Dec 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49412
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method includes operating an internal combustion engine according to a four-stroke combustion cycle. The four-stroke combustion cycle includes a combustion stroke, an exhaust stroke, an intake stroke and a compression stroke. A valve associated with a cylinder of the internal combustion engine is opened at a first time during the four-stroke combustion cycle. The valve is closed at a second time during the four-stroke combustion cycle. The valve is opened at a third time during the four-stroke combustion cycle. The valve is closed at a fourth time during the four-stroke combustion cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.