Mechanical variable timing device that adjusts the pivot point at which a rocker arm pivots

摘要

The mechanically operable variable timing device for use with a rocker arm pivot point that is able to adjust the valve timing and lift on a valve stem by adjusting the pivot point of the rocker arm. The mechanically operated variable timing device includes a cam that rotates independent of engine RPM in order to adjust the pivot point of the rocker arm, which in turn adjusts the lift and valve timing of the engine at any RPM. The mechanically operated variable timing device places the cam above a plunger, which is positioned over the respective rocker arm. The plunger is biased upwardly via a spring positioned between the ball fulcrum of the rocker arm and a bottom portion of the plunger. A pivot shaft is threadably engaged to a threaded hole located on a top surface of the engine block.

主权项

1. A mechanically operable variable timing device for use with a rocker arm pivot point comprising:
a plunger engaged upwardly against a cam that is adaptively rotated independent of an existing internal combustion engine; wherein a pivot shaft and spring align and orient the plunger between a ball fulcrum and the cam, and thereby enable adjustment of a rocker pivot point, which in turn adjusts the timing and lift of a valve stem with respect to a cylinder of said internal combustion engine.