Made to an electromechanical valve actuator of an internal...

Details Made to an electromechanical valve actuator of an internal... Made to an electromechanical valve actuator of an internal...

2006-05-23

2006-05-23

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

C251S129100, C251S129150, C251S129160

Reexamination Certificate

active

07047919

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.

REFERENCES:
patent: 6334413 (2002-01-01), Hattori et al.
patent: 2003/0080306 (2003-05-01), Keiji et al.
patent: 1 010 866 (2000-06-01), None
patent: 1 174 595 (2002-01-01), None

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