Rocker arm with integrated gear train
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United States of America Patent
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Oct 9, 2018
Grant Date -
Sep 20, 2018
app pub date -
Mar 17, 2017
filing date -
Mar 17, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A switchable rocker arm is provided having first and second arms. The first arm has a first outer end and a first inner end and the second arm has a second outer end a second inner end, with the first and second outer ends contacting a respective one of a cam or a valve. One of the first and second inner ends includes an opening with a ring gear and the other includes at least one support for a planet gear that engages the ring gear. A sun gear is located on a rocker shaft and engages the planet gear. A locking mechanism is switchable from a locked position, in which the sun gear is rotationally fixed to the rocker shaft to transfer a cam lift to the valve via the gear ratio provided in the sun, planet, and ring gear arrangement, and a release position, in which the sun gear is rotatable on the rocker shaft so no cam lift is transferred.
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