| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable delivery pump capable of corresponding to three or more required hydraulic pressure characteristics.SOLUTION: A variable delivery pump comprises: a spring 18 provided in a state, in which a setting load is applied, for urging a cam ring 17 in a direction increasing the volume change quantity of a plurality of pump chambers 20; one first control oil chamber 31 for applying a force to the cam ring in a direction decreasing the volume change quantity of the plurality of pump chambers by always supplying the delivery pressure; two second and third control oil chambers 32 and 33 for applying a force to the cam ring in a direction increasing the volume change quantity of the plurality of pump chambers by supplying the delivery pressure; and first and second solenoid selector valves 40 and 50 and a pilot valve 60 for controlling the supply amount of the delivery pressure supplied to the second and third control oil chambers via a control unit. |
