Patent ID: 7712442

Claim:
Variable valve lift control system for a combustion engine with underneath camshaft for the adjustment of a valve lift and of an opening time of at least one inlet valve and/or outlet valve load-dependently and rotational speed-dependently as well as for the switch-off of individual cylinders of an internal combustion engine, whereby rocker levers or swing arms, which are driven by means of cams of a camshaft, actuate the inlet valve and outlet valve by means of the engagement into further rocker levers or swing arms, characterized in that: an underneath camshaft ( 1 ) drives by means of a push rod ( 3 ) via a hydraulic valve clearance adjustment element ( 2 ) a rocker lever ( 4 ), which has a curve contour ( 14 ), which runs on a roller ( 13 ) of an intermediate lever ( 9 ), which is moveable by means of two rollers ( 15 ), which are arranged on one axis, in slotted links ( 10 ), which are connected in a fixed manner with a cylinder head, whereby the intermediate lever ( 9 ) supports with a contour at an adjustment bar ( 11 ), which is conducted within a housing, and rolls with a work curve ( 16 ) on a roller ( 8 ) of a cam follower ( 7 ), and whereby the cam follower ( 7 ) acts with engagement areas, which are provided bottom-sided, respectively, on a hydraulic adjustment element ( 6 ) and a valve ( 5 ) of a combustion engine.