Engine electronic valve actuation
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United States of America Patent
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Jul 3, 2012
Grant Date -
Feb 4, 2010
app pub date -
Jul 27, 2009
filing date -
Aug 1, 2008
priority date (Note) -
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Abstract
A head assembly for an internal combustion engine includes an electromagnetic valve actuation system. The head has an intake or exhaust passage defined therein. A valve is disposed in the passage and is operable to selectively open and close the passage. The head has a cooling passage defined therein for passage of a cooling fluid. An electromagnetic actuator has a piston in mechanical communication with the valve and a coil in fluid communication with the cooling passage. The electromagnetic actuator is operable to move the valve between a closed and an open position.
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