Patent ID: 7178495
Filing Date: 2007-02-20
Classification: F01L

Abstract:
1. An adjusting device for camshafts of motor vehicles, comprising: a stator having radial inwardly projecting stays; a rotor having vanes projecting into spaces defined between the stays of the stator; wherein the vanes separate the spaces into a first pressure chamber and into a second pressure chamber, respectively; wherein the rotor is rotatable relative to the stator and wherein the vanes of the rotor are loadable on opposed sides with a pressure medium; wherein the rotor is lockable relative to the stator in a locked position, wherein the stator has at least one locking bore and wherein the rotor has a locking element having a locking position in which the locking element engages the locking bore and locks the rotor in the locked position; wherein the locking element is moveable from the locking position into a release position by the pressure medium supplied by a first supply groove and a second supply groove to independently load a first surface and a second surface of the at least one locking element, respectively; wherein, when an engine of the motor vehicle is started with the locking element in the locking position, the second supply groove remains open and supplies the pressure medium to the second surface of the locking element, wherein the locking element remains in the locking position until a pressure of the pressure medium is greater than a counterforce force of the locking element forcing the locking element into the locking position, wherein the first supply groove alternatingly connects the first surface to the first pressure chamber or the second pressure chamber.