| 摘要 |
<P>PROBLEM TO BE SOLVED: To minimize energy consumption even if driving a pump constantly for lubrication in a hydraulic control device for a hydraulic actuator 6 built in a power transmission mechanism, wherein an accumulator 16 is connected to an oil feeding passage 14 for the hydraulic actuator fed with oil from the pump 10 through a regulator 11 and a one-way valve 12, and a lubricating oil passage 20 for the power transmission mechanism is connected to the drain side of the regulator. <P>SOLUTION: A hydraulic switching means 19 is provided for switching the set pressure of the regulator 11 over to the high pressure side or the low pressure side. While the oil pressure of the oil feeding passage 14 is not less than the pressure that can operate the hydraulic actuator 6, the set pressure of the regulator 11 is held to the low pressure side to reduce the workload of the pump 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
