Patent ID: 6640759
Filing Date: 2003-11-04
Classification: F01L,Y10T

Abstract:
A two-step finger follower rocker arm assembly for variably activating a gas valve in an internal combustion engine having a camshaft having a central lobe and at least one lateral lobe, comprising:a) a follower body having means for engaging said engine at a first end of said body and having means for engaging a valve stem of said gas valve at a second end of said body and having a passage formed in said body between said first end and said second end and having an upper surface at the terminus of said passage adjacent said camshaft; b) a slider member slidably disposed in said passage and having an outer surface for engaging said central lobe of said camshaft, and having a latching surface, and having a first sliding surface for engaging a second sliding surface of said passage; c) latching means disposed in said follower body for latching said slider member to said body to engage said outer surface with said central lobe to provide a first rocker assembly mode having a first valve lift capability, and for unlatching said slider member from said body; and d) means for extending said passage beyond said upper surface of said body to lengthen at least a portion of said second sliding surface of said passage to decrease a counter-torque moment between said slider member and said follower body.