A device and method for the relative adjustment of the angle of rotation
of a camshaft with respect to the crankshaft of an internal combustion
engine that utilizes a hydraulically activated actuating element, through
the adjustment of which the phase position of the camshaft can be
directly or indirectly changed. The actuating element is bordered by two
pressure chambers, which can be loaded with or relieved of hydraulic
fluid via control lines. A control valve is provided, which, depending
upon an operating state of the internal combustion engine, forces a flow
of oil that is forced from an oil reservoir by an oil pump via a first
control line to a first pressure chamber, while oil from a second
pressure chamber is returned to the oil reservoir via a second control
line, and vice versa. At least one controlled bypass is arranged between
the two pressure chambers. In this manner, the speed of adjustment of the
camshaft adjuster can be advantageously increased.