Low friction shim surface
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United States of America Patent
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-
Jan 31, 2017
Grant Date -
Nov 12, 2015
app pub date -
Dec 10, 2013
filing date -
Dec 11, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A variable valve actuating mechanism comprising a camshaft having two concentric cam lobes that may be rotated relative to one another a summation lever engaging with both cam lobes, a valve actuating rocker pivotally connected to the summation lever and engaging with a hydraulic lash adjuster at a first end and with a valve at a second end, and a shim surface movable with the pivot axis connecting the summation lever to the valve actuating rocker for limiting the expansion of the hydraulic lash adjuster to control clearance in the rocker system, wherein, in order to reduce friction, the shim surface abuts with a stationary stop surface that forms part of a camshaft support bearing.
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