Patent ID: 7318400
Filing Date: 2008-01-15
Classification: F01L

Abstract:
1. A locking pin mechanism for variably locking together a rotor and a stator in a vane-type camshaft phaser having a rear cover plate and a front cover plate secured to the stator and enclosing the rotor within the stator, the phaser including passages for supplying phase-advance oil and phase-retard oil to respective advance and retard chambers formed between the rotor and stator, the locking pin mechanism comprising: a) a locking pin disposed in a bore in said rotor; b) a well formed in one of said rear cover plate or said front cover plate for receiving a portion of said locking pin in a locked mode, said well including a bottom wall; c) a first passage connecting said well to said phase-advance oil; and d) a second passage connecting said well to said phase-retard oil, wherein said locking pin is in contact with said bottom wall of said well in the locked mode.