Patent ID: 6267351
Filing Date: 2001-07-31
Classification: F01L,F16K

Abstract:
An electromagnetic actuator comprising:a cylinder head having a valve seat;a valve having a valve stem and a valve head, the valve being mounted for movement between a first position wherein the valve seat is closed by the valve head, and a second position wherein the valve seat is open;an armature secured to the valve stem;an electromagnet which can be energized and de-energized to move the armature so that the armature moves the valve seat between the first and second positions;a mechanical holder that can hold the valve in a selected one of the first and second positions; anda link mechanism disposed between the mechanical holder and the armature, the link mechanism coupled to the armature to move as a unit with the armature, the link mechanism causing (i) engagement of the mechanical holder upon movement of the valve into the selected position so that the holder holds the valve in the selected position (ii) and disengagement of the holder to release the valve when the electromagnet is operated to move the valve out of the selected position.