| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve timing adjuster which quickly starts an engine by starting the engine in the middle position between the most delay angle and the most advance angle and prevents generation of knocking noise. SOLUTION: A stopper piston 32 constrains relative rotation of a vane rotor 15 with respect to a shoe housing 12 by being fitted into a fitting hole 41. A tip face 33b formed on a tip portion 33 of the stopper pin 32 receives delay angle oil pressure from a hydraulic chamber 42. A circular face 34a formed on the fitting hole side in a large diameter sliding portion 34 receives advance angle oil pressure from a hydraulic chamber 45. The delay angle oil pressures the tip face 33b and the circular face 34a receive act in a direction in which the stopper piston 32 is pulled out from the fitting hole 41. A circular face 34b which is formed on the side opposite to the fitting hole of the large diameter sliding portion 34 receives advance angle oil pressure from a hydraulic chamber 46. The advance angle oil pressure the circular face 34b receives acts as a force which presses the stopper piston 32 to a circular member 40 side.
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