Patent ID: 6615782
Filing Date: 2003-09-09
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 an interface means for engaging a valve stem 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 a first bore transverse to said passage; b) a slider member slidably disposed in said passage and having a slot formed therethrough, said member having an outer surface for engaging said central lobe of said camshaft, and having a latching surface; c) a shaft disposed in said first bore and extending through said slot in said slider member; d) at least one lateral follower roller disposed on an end of said shaft outside said follower body for engaging said at least one lateral lobe of said camshaft; and e) 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 to engage said at least one lateral follower roller with said at least one lateral camshaft lobe to provide a second rocker assembly mode having a second valve lift capability.