Patent ID: 7296546
Filing Date: 2007-11-20
Classification: F01L

Abstract:
1. An arrangement for variable actuation of gas exchange valves of internal combustion engines comprising: at least one cam on a camshaft mounted in said housing and rotating dependent on engine speed; an intermediate link driven by said cam; a bolt having an axis and mounting said intermediate link, said intermediate link carrying out an oscillating purely rotational motion about said axis, said bolt being displaceable parallel to itself along an adjustment curve; a control curve on said intermediate link and having a rest region as well as a lift region; a driving element actuated by said control curve for actuating in turn at least one of said valves; a four-bar linkage connected with an engine cylinder head for guiding said bolt and having first joints and second joints, said first joints comprising two joints fixed and spaced from each other in a first spacing, said second joints comprising two second joints each pivotable about one of said first joints, said two second joints having a spacing between them smaller than the spacing between said two first joints for guiding said bolt on a substantially arc-shaped adjustment curve.