Patent ID: 7007650
Filing Date: 2006-03-07
Classification: F01L,Y10T

Abstract:
1. A valve actuation system, comprising: an engine valve moveable between a first position at which the engine valve prevents a flow of fluid relative to the engine valve and a second position at which the fluid flows relative to the engine valve; a first cam adapted to move the engine valve from the first position to the second position during a first lift period in response to a rotation of the first cam; a second cam adapted to move the engine valve from the first position to the second position during a second lift period in response to a rotation of the second cam; a cam following assembly disposed between the first and second cams and the engine valve, the cam following assembly adapted to selectively connect one of the first and second cams with the engine valve to thereby move the engine valve through one of the first and second lift periods, wherein the first lift period and the second lift period are configured to occur during one rotation of the first cam; a first cam roller selectively engagable with the first cam; a second cam roller selectively engagable with the second cam; a cam follower base; a first cam lever pivotally connecting the first cam roller to the cam follower base; and a second cam lever fixedly connecting the second cam roller to the cam follower base.