Variable camshaft timing system with pin-style lock between relatively oscillatable components

摘要

A variable camshaft timing phaser (10;110;210) is selectively advanced or retarded, the rotor having at least one outwardly extending vane (20;120;220) that is received in an inwardly facing recess (18A;118A;218A) and a retard portion (18R;118R;218R). Pressurized oil is selectively delivered to one of the advance portion or the retard portion of the recess, and the relative positions of the rotor and the housing are positively locked in position when the spool valve is in its null position by a locking pin (48;148;248) that is axially shiftable relative to the housing between a locking position and an unlocked position.