Patent ID: 8205586

Claim:
A device for variably adjusting control times of gas exchange valves of an internal combustion engine, comprising: rotors, the rotors being an outer rotor and an inner rotor, the inner rotor being rotatable relative to the outer rotor, with one of the rotors being drive-connected to a crankshaft and the other one of the rotors being drive-connected to a camshaft; at least one pressure space, with each pressure space being divided into two pressure chambers which act counter to one another; a plurality of pressure medium ducts via which a pressure medium is supplied to or discharged from the pressure chambers; and a plurality of rotational angle limiting devices, each of the rotational angle limiting devices being moveable between a locked state and an unlocked state, the locked state and the unlocked state being locking states, the locking states being set by means of a supply of pressure medium to or a discharge of pressure medium from the respective rotational angle limiting devices, wherein the locking states of at least a first and a second rotational angle limiting device are controlled by means of a control line separate from said pressure medium ducts, and the locking states of at least a third rotational angle limiting device are controlled independently of the first rotational angle limiting device and the second rotational angle limiting device.