Camshaft adjuster

Abstract

A configuration of a camshaft phaser ( 1 ), having a drive sprocket ( 2 ), a stator ( 3 ) and a rotor ( 4 ), the hydraulic channels ( 5 ) and ( 14 ) being formed by contact surfaces ( 7 ) of the axially contiguous components, such as the drive sprocket ( 2 ), the stator ( 3 ) and the rotor ( 4 ), as well as by recesses ( 6 ).

1 - 4 . (canceled) 
     
     
         5 . A camshaft phaser comprising:
 a drive sprocket;   a stator; and   a rotor, the rotor and the stator forming two hydraulic working chambers for rotation of the rotor relative to the stator, and the stator being torsionally fixed relative to the drive sprocket,   at least two of the drive sprocket, stator and rotor being configured directly axially contiguously and, via contact surfaces thereof, defining a common hydraulic channel leading into one of the working chambers.   
     
     
         6 . The camshaft phaser as recited in  claim 5  wherein the rotor has a vane, the vane separating the working chambers from one another, and the vane having a recess, the recess, together with the drive sprocket or the stator, forming another common hydraulic channel. 
     
     
         7 . The camshaft phaser as recited in  claim 5  further comprising a locking mechanism communicating hydraulically through a further shared hydraulic channel with a hub, the further common hydraulic channel being defined by the contact surfaces. 
     
     
         8 . A camshaft phaser comprising:
 a drive sprocket;   a stator; and   a rotor, the rotor and the stator forming two hydraulic working chambers for rotation of the rotor relative to the stator, and the stator being torsionally fixed relative to the drive sprocket,   at least two of the drive sprocket, stator and rotor being configured indirectly axially contiguously and, via contact surfaces thereof, defining a common hydraulic channel leading into one of the working chambers.   
     
     
         9 . The camshaft phaser as recited in  claim 8  wherein the rotor has a vane, the vane separating the working chambers from one another, and the vane having a recess, the recess, together with the drive sprocket or the stator, forming another common hydraulic channel. 
     
     
         10 . The camshaft phaser as recited in  claim 8  further comprising a locking mechanism communicating hydraulically through a further shared hydraulic channel with a hub, the further common hydraulic channel being defined by the contact surfaces.