Cam phaser

A cam phaser, comprising:

• a rotor;
• and
• a stator,
• wherein the rotor is rotatable relative to the stator about a rotation axis of the rotor,
• wherein a blade of the rotor is arrangeable at various positions between two bars of the stator,
• wherein an intermediary space formed between the two bars is divided by the blade of the rotor into a first pressure cavity and a second pressure cavity,
• wherein a locking device including a locking bolt that is spring loaded by a preload element and a locking disc is configured to lock the stator with the rotor,
• wherein the preload element includes a spring force for locking,
• wherein the locking bolt is received axially movable in a receiving opening that is flowable by a hydraulic fluid and that is oriented in a direction of a longitudinal axis of the receiving opening that is formed in the rotor,
• wherein the rotor is movable by pressures provided in the first pressure cavity and in the second pressure cavity,
• wherein the rotor includes a locking position for locking,
• wherein a hydraulic valve is provided for pressure loading and pressure relief,
• wherein the locking device is configured to position the locking bolt by the spring force and by an additional force directly impacting the locking bolt,
• wherein the additional force is a hydraulic force of the hydraulic fluid flowing through the cam phaser and into the receiving opening,
• wherein the spring force and the hydraulic force are oriented in an identical direction,
• wherein the locking bolt is loadable by the hydraulic force in any axial position of the locking bolt in the receiving opening, and
• wherein the receiving opening is not connected with ambient pressure in any axial position of the locking bolt in the receiving opening.