Patent ID: 7363893
Filing Date: 2008-04-29
Classification: F01L

Abstract:
1. A variable valve actuation system for inclusion in an internal combustion engine between a camshaft and a plurality of roller finger followers to variably actuate a plurality of associated engine combustion valves to vary the timing of valve opening, timing of valve closing, and amplitude of valve lift, said system including at least sub-assembly comprising: a) a pivot shaft having a first axis disposed parallel to an axis of rotation of said camshaft defined as a second axis; b) a rocker sub-assembly pivotably disposed on said pivot shaft for rotation about said first axis, said rocker sub-assembly having a follower for following a lobe of said camshaft and having an output cam for engaging a one of said roller finger followers; and c) means for varying the distance of said pivot shaft axis from said camshaft axis to vary the action of said output cam upon said one of said roller finger followers to vary said timing and lift of an associated one of said valves, wherein said means for varying the distance includes means for rotating said pivot shaft about a third axis outside of said pivot shaft.