camshaft adjuster

Abstract

The invention relates to a camshaft adjuster comprising: - a vane adjuster with a stator (1) and a rotor (2), in which stator the rotor (2) can be operated in a pressurized manner in a stop position Adjustment of the angle of rotation between the "advance" and "lag" stop positions, and - a locking device for locking the rotor (2) relative to the stator (1) in the "advance" and "lag" stop positions ” between the predetermined intermediate locking position (MVP), wherein, - the locking device includes a plurality of locking slides (6, 7, 8, 9) and in the locking slides (6, 7, 8 , 9) Spring-loaded multiple locking pins (10, 11, 12, 13) in the engagement direction, due to the different assignment of the rotor (2) and stator (1), these locking pins in the rotor (2) move relative to each other when moving relative to the stator (1) and are arranged with each other in such a way that, due to the varying torque acting on the camshaft, by sequentially placing the locking pins (10, 11, 12, 13) Engaged in the locking chute (6, 7, 8, 9), the rotor (2) can automatically lock from the first stop position "advance" or "lag" to the predetermined central position relative to the stator (1) , wherein - the locking pins (10, 11, 12, 13) and the locking slides (6, 7, 8, 9) are arranged relative to each other in such a way that when the rotor (2) moves from the corresponding second When the stop position "advance" or "lag" rotates towards the middle lock position (MVP), the lock pins (10, 11, 12, 13) lock in the lock chute (6) from different directions in reverse order , 7, 8, 9).

Description

technical field [0001] The invention relates to a camshaft adjuster. Background technique [0002] Camshaft adjusters are often used in valve trains of internal combustion engines in order to vary the opening and closing times of the valves, whereby the fuel consumption values ​​and the operating characteristics of the internal combustion engine can generally be improved. [0003] A practical embodiment of a camshaft adjusting device that has proven possible has a vane adjuster with a stator and a rotor delimiting an annular space, which is divided by projections and vanes into several studio. The working chamber can optionally be acted upon with pressure medium, which is conveyed in the pressure medium circuit by means of a pressure medium pump from a pressure medium reservoir into the working chamber on one side of the rotor blade and from the corresponding other side of the blade In the upper working chamber, it is sent back to the pressure medium reservoir again. The ...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of the solution described here is that the automatic locking always only works when the rotor is turned in one direction, i.e. the rotor is only turned "advance" or "lag" from one stop position towards the intermediate locking position automatic lock

Automatic rotation of the rotor from the two stop positions "advanced" and "retarded" towards the intermediate locking position cannot be realized with the locking devices described in the prior art

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