Variable compression ratio internal combustion engine
US8136489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2007 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Feb 13, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B75/041
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a variable compression ratio internal combustion engine that controls the compression of an internal combustion engine by changing the volume of the combustion chamber of the internal combustion engine in an axial direction of the cylinder, when a target compression ratio (εt) based on an operating condition of the internal combustion engine is at a reference compression ratio (ε0) or greater (S102), the compression ratio is changed to the target compression ratio (S103). When the target compression ratio (εt) is lower than the reference compression ratio (ε0) (S102), a control is executed to change the compression ratio and also to strength the tumble flow in the combustion chamber (S104).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.