BIAS MECHANISMS FOR A ROCKER ARM AND LOST MOTION COMPONENT OF A VALVE BRIDGE
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United States of America Patent
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app pub date -
Jul 15, 2015
filing date -
Jul 15, 2014
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Abstract
Systems for actuating at least two engine comprise a valve bridge operatively connected to the at least two engine valves and having a hydraulically-actuated lost motion component. A rocker arm has a motion receiving end configured to receive valve actuation motions from a valve actuation motion source and a motion imparting end for conveying the valve actuation motions and hydraulic fluid to the lost motion component. The motion receiving end is biased toward the valve actuation motion source. A bias mechanism, supported by either the rocker arm, valve bridge or both, is configured to bias the motion receiving end of the rocker arm and the lost motion component into contact with each other. By maintaining such contact, the bias mechanism helps maintain the supply of hydraulic fluid from the rocker arm to the lost motion component.
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