Patent ID: 6691657
Filing Date: 2004-02-17
Classification: F01L

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; 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; c) at least one lateral follower roller disposed for rotation outside said follower body for engaging said at least one lateral lobe of said camshaft; and d) latching means disposed in said follower body for latching said slider member to said body via said latching surface to engage said outer surface of said slider 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 to engage said lateral follower roller with said lateral camshaft lobe to provide a second rocker assembly mode having a second valve lift capability.