Electromagnetic actuator having inherently decelerating actuation between limits

摘要

An electromagnetic valve actuator system for controlling the operation of a valve in an internal combustion engine comprising a valve having a valve stem (42) with a valve head (44) at one end. The valve is reciprocable along the longitudinal central axis of the valve stem to alternatingly move the valve head between a first position and a second position. A first coil (51) is positioned on a first laminated core (52) having a gap and a thickness. A second coil (53) is positioned on a second laminated core (54) having a gap and a thickness. The gaps of the first and second cores are aligned. An armature (50) on the valve stem passes through the gaps of the first and second laminated cores, such that when the armature is centered in either of the gaps at least a portion of the armature extends slightly passed the thickness of the other laminated core.