| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control device capable of efficiently driving an oil pump.SOLUTION: A hydraulic control device 1 supplies a hydraulic pressure to a supply target portion 3 to which a low hydraulic pressure is supplied and a hydraulically actuated portion 2 to which a high hydraulic pressure is supplied. The hydraulic control device 1 comprises: a large-capacity oil pump Pb having a large capacity; a small-capacity oil pump Ps smaller in capacity than the large-capacity oil pump Pb; a first channel L1 for supplying the hydraulic pressure from the large-capacity oil pump Pb to the small-capacity oil pump Ps; a second channel L2 for supplying the hydraulic pressure from the small-capacity oil pump Ps to the hydraulically actuated portion 2; and a third channel L3 for supplying the hydraulic pressure from the large-capacity oil pump Pb to the hydraulically actuated portion 2 without via the small-capacity oil pump Ps. The small-capacity oil pump Ps further pressurizes the hydraulic pressure supplied to the small-capacity oil pump Ps and supplies the pressurized hydraulic pressure to the hydraulically actuated portion 2. |
