Patent ID: 9163566
Filing Date: 2015-10-20
Classification: F01L,F02D

Abstract:
1. Valve actuation mechanism for an internal combustion engine on an automotive vehicle, comprising rockers moved by a camshaft, each rocker being adapted to exert a valve opening force on at least a portion of a valve opening actuator of each cylinder, via an activation piston of the rocker and movable with respect to the rocker under action of a fluid pressure raise in a chamber, from a first position, to a second position, in which a cam follower of the rocker reads at least one auxiliary valve lift sector of a cam of the camshaft so as to perform an engine operating function, each rocker comprising a reset valve adapted to release fluid from the chamber, wherein the valve actuation mechanism comprises, for each rocker, a reset cam profile adapted to open the reset valve when the activation piston has to be moved from its second position to its first position, and wherein each rocker comprises a cam follower, adapted to drive the reset valve as a function of the movement of the reset profile.