Patent ID: 6220211
Filing Date: 2001-04-24
Classification: F01L,F16H

Abstract:
A device for retarding and advancing a cam shaft wheel of an engine relative to the crankshaft wheel of the engine during operation of the engine, wherein the wheels are engaged to a timing chain, the device comprising:a pair of rods, one of the rods oriented normal to a portion of the chain on one side of the crankshaft wheel and another of the rods normal to another portion of the chain on the other side of the crankshaft wheel;sleeves affixed to the engine closely and slidably holding the rods;an eccentrically slotted gear rotatable on the engine;means for connecting the rods to the eccentrically slotted gear such that turning the gear draws the one rod inward relative to the gear while translating the other rod outward relative to the gear;means for turning the gear in response to values of selected engine condition variables.