Abstract: A valve train control device, for use in a reciprocating piston internal combustion engine having a camshaft with a primary cam lobe, is provided herein and generally includes a primary cam follower positioned in an operational path between the primary cam lobe and a corresponding valve with the primary cam follower being constructed to follow the primary cam lobe while an auxiliary motion transfer device, having at least a portion responsive to at least one engine parameter, may be placed in a variable motion operational path including the primary cam follower to shift the primary cam follower relative to the primary cam lobe during at least a portion of the camshaft rotation to alter one or more valve operating parameters relative to a set of valve parameters defined by the primary cam lobe profile interacting with an unshifted primary cam follower.

Abstract: A valve train control device, for use in a reciprocating piston internal combustion engine having a camshaft with a primary cam lobe, is provided herein and generally includes a primary cam follower positioned in an operational path between the primary cam lobe and a corresponding valve with the primary cam follower being constructed to follow the primary cam lobe while an auxiliary motion transfer device, responsive to at least one engine parameter, may be coupled to the primary cam follower to shift the primary cam follower relative to the primary cam lobe during at least a portion of the camshaft rotation to alter one or more valve operating parameters relative to a set of valve parameters defined by the primary cam lobe profile interacting with an unshifted primary cam follower.