| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control valve capable of improving responsiveness of hydraulic control.SOLUTION: A hydraulic control valve 50 comprises a connection pipe 80 for connecting a first drain passage 64 and a second drain passage 65. In a flow passage leading to the second drain passage 65 from the first drain passage 64, a portion which is sharply enlarged is not formed as the first drain passage 64 and the second drain passage 65 are connected continuously by the connection pipe. Therefore, turbulence hardly occurs in a flow of a hydraulic oil when discharging hydraulic pressure of a retard chamber 34, so that pressure loss is reduced. Therefore, responsiveness of hydraulic control can be improved. |
