Valve drive system and method
US6973900B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2004 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Feb 9, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2800/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When an internal combustion engine including an electromagnetic valve drive mechanism driving a plurality of valves is to be stopped, application of current to at least one magnet for one valve or valve group is stopped at a different timing from another valve or valve group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.