Patent ID: 6973904

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: a 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 integrated low-friction structure, said rocker levers having downward structures driving the rocker levers that actuate the valves by way of a second integrated low-friction structure having an axis around which said setting disk is rotatable, one of said downward 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 integrated low-friction structure having a second radius, a distance between the common axid of rotation of the setting disk and of the second of the second low-friction structure 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.