| 摘要 |
PROBLEM TO BE SOLVED: To reliably and accurately convert a phase between a crankshaft and a camshaft by utilizing fluctuating torque acting on the camshaft as driving force. SOLUTION: With respect to a phase-angle control member 16 in which circumferential rotation is restrained, a vane 5 formed integrally with the camshaft is rotated together with a body 2 driven rotatively by the crankshaft. When the fluctuating torque acting on the camshaft has peaked, a communication hole 12c of a phase-angle detector 12 communicating with an advance-angle hydraulic-oil sump 8 and the communication hole 12d of the phase-angle detector 12 communicating with a retard-angle hydraulic-oil sump 9 come in agreement, in response to the direction of the fluctuating torque being at its peak, with either one of an advance-angle communication groove 16a and an retard-angle communication groove 16b respectively of a phase-angle control member 16 to allow the advance-angle hydraulic-oil sump 8 to communicate with the retard-angle hydraulic-oil sump 9. Thus, the phase of the vane 5 is converted with respect to the body 2 in the direction corresponding to the direction of the fluctuating torque being at its peak. COPYRIGHT: (C)2007,JPO&INPIT
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