Patent ID: 6886512

Claim:
Valve-stroke controls for continuously varying the stroke of a valve and for maintaining valves constantly closed in an internal combustion engine while the engine is in operation, comprising: setting disk mounted in a bearing fastened to a cylinder head, said setting disk having an eccentric axis; rotating locker levers mounted around said axis on each side of said setting disk; a cam mounted on a first roller, said rocker levers having downward structures driving the rocker levers that actuate the valves by way of a second roller having an axis around which said setting disk is rotatable, one of said structures maintaining the valves constantly closed and being in form of a positively circular arc with first radius radiating out of a center situated along an axis of rotation of its own rocker lever, said second roller having a second radius, a distance between the common axis of rotation of the setting disk and of the second roller on the one hand and the axis of the setting disk on the other hand is the sum of the first radius and the second radius.