Camshaft phaser system

Abstract

A camshaft phaser system including an output drive element non-rotatably connected to a camshaft, and a control valve disposed in a central receptacle of the output drive element, the control valve extending axially into a central bore of the camshaft and being formed with at least a first operating port and a second operating port axially spaced apart therefrom. The control valve is axially disposed such that the first operating port is axially positioned in the camshaft.

1 - 6 . (canceled) 
     
     
         7 . A camshaft phaser system comprising:
 an output drive element non-rotatably connected to a camshaft; and   a control valve disposed in a central receptacle of the output drive element, the control valve extending axially into a central bore of the camshaft and being formed with at least a first operating port and a second operating port axially spaced apart therefrom, the control valve being axially disposed such that the first operating port is axially positioned in the camshaft.   
     
     
         8 . The camshaft phaser system as recited in  claim 7  wherein the camshaft has a first annular groove in a region of the first operating port. 
     
     
         9 . The camshaft phaser system as recited in  claim 7  wherein the control valve is disposed within a central screw, a radially outer peripheral surface of the central screw having formed thereon a radially extending shoulder, the shoulder being located within a recess formed in the end face of the output drive element and bearing axially against the output drive element. 
     
     
         10 . The camshaft phaser system as recited in  claim 7  wherein the output drive element has a plurality of first bores extending angularly from radially outward to radially inward toward the camshaft for connection of the first operating port to a pressure chamber. 
     
     
         11 . The camshaft phaser system as recited in  claim 10  wherein at an end facing the camshaft, the first bores each open into a respective axial connection opening fluidically connected to a first annular groove of the camshaft in a region of the first operating port. 
     
     
         12 . The camshaft phaser system as recited in  claim 7  wherein the control valve has a control port for controlling a locking device, the output drive element having a plurality of second bores extending angularly from radially inward to radially outward toward the camshaft for connection of the control port to the locking device.