Method of controlling the intake and/or the exhaust of at least one deactivated cylinder of an internal-combustion engine
US7395813B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 2006 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Nov 22, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method controls the intake and/or the exhaust of at least one deactivated cylinder (10, 12, 14, 16) of an internal-combustion engine operating in four phases. The cylinder includes an intake with an intake valve (28), an exhaust with an exhaust valve (34), a fuel injector (42), an ignition (48) and a piston sliding within this cylinder between a position corresponding to its top dead center (PMHa, PMHd) and a position corresponding to its bottom dead center (PMBa, PMBd). When the engine runs at low or partial loads, one of the valves (28, 34) of the deactivated cylinder is opened in the vicinity of a top dead center (PMHa, PMHd). This valve is closed in the vicinity of the next top dead center (PMHd, PMHa).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.