Patent ID: 8813700
Filing Date: 2014-08-26
Classification: F01L

Abstract:
1. A camshaft adjustment mechanism comprising: a rotor that is connectable to a camshaft and rotatable between an advanced position and a retarded position, with a vane extending from the rotor; a stator arranged around the rotor; a cover associated with the stator; an advance chamber and a retard chamber formed between the rotor and the stator, the advance chamber and the retard chamber being separated from each other by the vane; a locking apparatus locks the rotor from rotation relative to the stator; a first oil control valve associated with the advance chamber and the retard chamber to control oil flow to the advance chamber and the retard chamber; and a second oil control valve associated with the locking apparatus to control oil flow to the locking apparatus via a locking oil passage, wherein the locking apparatus comprises a pair of locking pins located in the rotor and two locking grooves formed in the cover, the locking grooves being in communication with the locking oil passage via an oil passage located in the cover that extends between the locking grooves, and the pair of locking pins are engagable in the locking grooves.