High expansion ratio internal combustion engine
US8695544B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2009 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Jan 29, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A high expansion ratio internal combustion engine includes: a variable compression ratio mechanism that varies a mechanical compression ratio of the internal combustion engine; and a variable valve train in which some valve(s) of a plurality of intake valves is phase-variable and the remaining valve(s) is phase-fixed, the variable valve train being configured such that a working angle of the phase-variable intake valve is larger than a working angle of the phase-fixed intake valve, wherein a valve-open timing of the phase-variable intake valve is retarded after a valve-open timing of the phase-fixed intake valve when the internal combustion engine is under low-load operating state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.