Variable valve control apparatus for engine and method thereof
US6895912B2 · kind B2 · utility
10Cited by
10References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Apr 23, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a low rotation region of an engine, valve timing of two intake valves is advanced and also one of two exhaust valves is driven by means of a cam with valve lift lower than that of the other exhaust valve, to thereby set a valve overlap period within which only one of the two exhaust valves is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.