CAM TORQUE ACTUATED PHASER USING BAND CHECK VALVES BUILT INTO A CAMSHAFT OR CONCENTRIC CAMSHAFTS

摘要

A camshaft assembly in which a bearing (49) includes a first passage (18) for introducing makeup oil to the phaser and a second passage (52) for controlling spool (20) position and lock pin (42) position. In an alternative embodiment the bearing (49) is replaced by pieces on the outer shaft and bearings. The pieces on the outer shaft (149, 150) house the advance and retard annuluses and ports in the inner and outer shafts. A first bearing (147) provides makeup fluid to the phaser and a second bearing (151) provides fluid for controlling the position of the spool and the lock pin position.