Patent ID: 6679208
Filing Date: 2004-01-20
Classification: F01L

Abstract:
An arrangement for relative angle of rotation adjustment of a camshaft of an internal-combustion engine with respect to a driving wheel, comprising:an interior part which is non-rotatably connected with the camshaft and which has at least approximately radially extending blades, a driven cell wheel which has several cells distributed along its circumference and bounded by webs, each of said cells being divided by at least one of the webs or blades of the interior part, guided within the cells in an angularly movable manner, into two pressure spaces, the camshaft being rotatable by way of the webs or blades between two end positions relative to the cell wheel when hydraulic pressure is admitted to or removed from the two pressure spaces by way of control lines, and sealing bodies arranged on free faces of the blades for sealing off the pressure spaces bounded by the webs or blades, wherein recesses are provided on the faces of the webs or blades in which the sealing bodies are arranged, said sealing bodies, for sealing off the pressure spaces by a hydraulic action, being pressed against an interior wall of the cell wheel, and wherein the sealing bodies are constructed as rollers which, provided with an installation play, are received in the recesses, the rollers, during operation of the adjusting unit, for the purpose of sealing, forming line contacts with the interior wall of the cell wheel and line contacts with the lateral walls of the recesses.