Adjusting system for camshafts of an internal combustion engine

An adjusting system for camshafts of an internal combustion engine having an emergency running function, comprising:

• a phase shifter gearing with an input drive element driven by a crankshaft of an internal combustion engine;
• an output drive element that drives a camshaft of the internal combustion engine;
• and
• an actuating element,
• wherein a relative rotation between the drive input element and the drive output element can be realized by means of a device for imparting a braking torque,
• wherein the braking torque applied to the actuating element is variable for normal operation,
• wherein in the event of failure of the device and/or control thereof, an emergency running setting of the camshaft can be attained and maintained as a result of braking or respectively, arresting the actuating element,
• wherein a lining carrier of the device is disposed in an axially displaceable and rotationally fixed manner on a shafts supporting the actuating element,
• wherein the braking torque for normal operation can be varied by means of stationary electromagnets acting on the lining carrier against a force of a spring and in a contactless manner,
• wherein the stationary electromagnets can be supplied with different voltages, and
• wherein the lining carrier and/or its control can be pressed by a pressure exerted by a spring against a stationary counter-friction surface and the emergency running setting can be set thereby.