Patent ID: 8689746
Filing Date: 2014-04-08
Classification: F01L

Abstract:
1. A device for variable adjustment of valve lift curves of gas exchange valves of an internal combustion engine, comprising: a hydraulic consumer; a camshaft having an interior with a cavity, camshaft bearings, and bores, the camshaft being arranged in the internal combustion engine in a rotatably mounted manner via the camshaft bearings, the bores being formed in the camshaft in a region of the camshaft bearings so that the cavity communicates with the camshaft bearings; a volume accumulator arranged in the cavity and having a housing which extends in a region of at least one of the camshaft bearings, the housing being a separate element from the camshaft and received in the cavity of the camshaft; and a fastening element arranged to fix the housing in the cavity in a positionally fixed manner, the fastening element having an outer surface area that is substantially matched to a surface area of the cavity and at least one axially extending first pressure medium passage that extends along an entire axial extent of the fastening element, the housing having a pressure medium conducting structure which communicates at one end with the first pressure medium passage and at another end with at least one of the bores of at least one of the camshaft bearings.