Valve mechanism for an internal combustion engine
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United States of America Patent
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Feb 11, 2014
Grant Date -
Apr 25, 2013
app pub date -
Jan 28, 2011
filing date -
Mar 1, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A valve mechanism is disclosed for a cylinder of an internal combustion engine which comprises two gas exchange poppet valves mounted in a cylinder head, a bridge 122 acting on the two valves, a cam for actuating the two valves, a slider 124 movable by the cam and slidable relative to the bridge 122, and a hydraulically controlled locking system having a latched position in which the slider transmits the force of the cam to the bridge 122 to actuate the two valves and a released position in which the valves are deactivated and the slider slides freely relative to the bridge. In the invention, the slider 124 is urged towards the cam by a spring 134 acting between the slider 124 and the cylinder head.
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