VARIABLE DISPLACEMENT PUMP

摘要

PROBLEM TO BE SOLVED: To realize a variable displacement pump capable of efficiently discharging pressure oil while impeding the leakage of the pressure oil inside the pump and reducing cost. SOLUTION: A control valve 121 is provided with a blocking part 132 for blocking a port connected to a second hydraulic pressure chamber 22 when the differential pressure between the upper reaches and lower reaches of metering throttles 113, 114 in a discharge passage 102 is relatively small.