Made to an electromechanical valve actuator of an internal combustion engine
US7047919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Jan 27, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L9/20
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a valve operating device for an internal combustion engine, comprising a means connected to the valve and able to be displaced on a course by which, at one end of this course, the valve is in the closed position and at the other end of the course this valve is in the open position. The displacement command is performed by means of a first and a second electromagnet and spring means such that the means is near to a first electromagnet for the closed position of the valve and near to the second electromagnet for the open position of the valve.The first electromagnet is of the polarized type with a permanent magnet permitting the means to be held in the position corresponding to the closed position of the valve in the absence of current in the winding of this first electromagnet. The second electromagnet is such that this position is maintained for a non-zero current in the winding of this second electromagnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.