VALVE DEACTIVATING DEVICE FOR AN INTERNAL COMBUSTION ENGINE

摘要

A valve mechanism is disclosed for a cylinder of an internal combustion engine which comprises two gas exchange poppet valves mounted in a cylinder head, a bridge (122) acting on the two valves, a cam for actuating the two valves, a slider (124) movable by the cam and slidable relative to the bridge (122), and a hydraulically controlled locking system having a latched position in which the slider transmits the force of the cam to the bridge (122) to actuate the two valves and a released position in which the valves are deactivated and the slider slides freely relative to the bridge. In the invention, the slider (124) is urged towards the cam by a spring (134) acting between the slider (124) and the cylinder head.