Electromagnetic actuator for the actuation of the valves of an internal combustion engine with recovery of mechanical play
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United States of America Patent
Stats
-
Apr 15, 2003
Grant Date -
Nov 8, 2001
app pub date -
Mar 7, 2001
filing date -
Mar 9, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromagnetic actuator for intake or exhaust valves of an internal combustion engine, in which an oscillating arm has an end in abutment on the upper end of the stem of the intake or exhaust valve; two electromagnets being provided to move the oscillating arm so as axially to displace this valve; a frame supporting the arm being connected to the head of the engine so as to be able to oscillate about an axis perpendicular to the axis of movement of the intake or exhaust valve and the electromagnetic actuator being provided with a device for adjusting the position of the frame with respect to the head to rotate the frame so as to maintain the mechanical play between the end of the oscillating arm and the stem of the valve at a predetermined value.
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