Spark ignition type internal combustion engine
US7802543B2 · kind B2 · utility
5Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2007 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Apr 30, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine provided with a variable compression ratio mechanism able to change a mechanical compression ratio and an actual compression action start timing changing mechanism able to change a start timing of an actual compression action. An amount of intake air in accordance with the required load is fed into a combustion chamber by controlling the closing timing of the intake valve, while a pressure, temperature or density in the combustion chamber at the end of a compression stroke is maintained substantially constant regardless of the engine load by controlling the mechanical compression ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.