Systems and methods for hydraulic lash adjustment in an internal combustion engine
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United States of America Patent
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Dec 1, 2015
Grant Date -
Jan 23, 2014
app pub date -
Jul 19, 2013
filing date -
Jul 20, 2012
priority date (Note) -
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Abstract
Systems and methods for actuating engine valves for positive power and engine braking operation are disclosed. The systems may include a self-lashing hydraulic piston slidably disposed in a fixed or rocker arm housing. The hydraulic piston may have an internal cavity in which a motion absorbing piston is disposed. A hydraulic fluid source may communicate with the hydraulic piston bore. A check valve which may be incorporated in a control valve may controls hydraulic fluid supply from the hydraulic fluid source to the hydraulic piston to provide self-lashing operation of the valve actuation system.
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