Switching oil gallery de-aeration
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United States of America Patent
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Oct 17, 2017
Issued Date -
Apr 14, 2016
app pub date -
Sep 18, 2015
filing date -
Oct 10, 2014
priority date (Note) -
Published
status (Latency Note)
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Abstract
A switching oil gallery de-aeration arrangement for a switchable valve arrangement is provided, including a switching control valve that activates or deactivates the switchable valve arrangement. The switching control valve is movable from a first position, in which pressurized hydraulic fluid from a hydraulic lash adjuster fluid gallery flows to a passage on the hydraulic lash adjuster and through a switching hydraulic fluid gallery to a check valve such that pressurized hydraulic fluid from the hydraulic lash adjuster fluid gallery pressurizes the switching hydraulic fluid gallery and is released through the check valve, and a second position, in which pressurized hydraulic fluid having a higher pressure sufficient for carrying out a switching function of the switchable valve arrangement is delivered by the switching hydraulic fluid gallery via the second intersection to the second port.
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Cited Art Landscape
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