Device for adjusting the rotational angular position of a cam shaft
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United States of America Patent
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Dec 1, 2015
Grant Date -
Jun 14, 2012
app pub date -
Dec 8, 2011
filing date -
Dec 8, 2010
priority date (Note) -
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Abstract
A device for adjusting the rotational angular position of a cam shaft relative to a crankshaft of a combustion engine includes a supply branch for supplying pressure fluid to setting chambers to generate torque acting on a rotor; and a pressure storage device arranged in the supply branch and including a spring and a storage chamber which can be filled with the pressure fluid against a spring force of the spring, wherein the storage chamber begins to fill, against the spring force, at a start-of-filling pressure which is at most as large as a hot idling pressure which the pressure fluid exhibits when the combustion engine is idling in its hot operational state, and continues to be filled against the spring force if the hot idling pressure is exceeded.
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