Indirect variable valve actuation for an internal combustion engine
US7137381B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2005 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Apr 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reciprocating piston-type internal combustion engine includes an engine cylinder, an intake port, an intake runner providing a passage through which intake gas enters the cylinder through the intake port, an intake valve for opening and closing the intake port, and a first flap located in the intake runner upstream from the intake valve, arranged in series with the intake valve, and having first and second positional states that vary during each engine cycle. The first state opens the intake runner passage to permit intake gas to enter the cylinder through the intake port. The second state at least partially closes the intake runner passage to control the flow of gas exiting or entering the cylinder through the intake port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.