Spark ignition type internal combustion engine
US8229649B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | May 31, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an internal combustion engine, a variable compression ratio mechanism (A) able to change a mechanical compression ratio and a variable valve timing mechanism (B) able to change a closing timing of an intake valve (7) are provided. When an amount of intake air supplied to a combustion chamber (5) is small, the closing timing of the intake valve (7) is held at a limit closing timing, and usually, when the amount of intake air supplied to the combustion chamber (5) increases by a certain extent, the action of advancing the closing timing of the intake valve (7) is started. As opposed to this, when the amount of intake air supplied to the combustion chamber (5) is small, if the rapid acceleration operation is performed, the action of advancing the closing timing of the intake valve (7) is started immediately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.