| 摘要 |
PROBLEM TO BE SOLVED: To supply pressurized fluid discharged by a pump to a power steering device also according to a steering load to further save energy and to provide a stable steering feeling even when a steering device is quickly turned at high speeds in a pump revolution sensing type flow controller for a power steering device. SOLUTION: In a load sensing flow controller 1 for a power steering device for supplying pressurized fluid discharged by a pump 3 which increases a pump discharge flow according to an increase in the number of revolutions of the pump to a power steering device of a vehicle according to a load via a fixed throttle passage 14 in a supply passage and for returning the excessive pressurized fluid to a suction side 3b of the pump 3 by flow regulating spool valves 4, 5 for regulating the opening of a bypass passage 7, a load sensing valve 37 is provided in a return passage 36 for joining the downstream side of a fixed throttle passage 14 of a supply passage to a bypass passage 7 and is operated by the pressure of the pressurized fluid of the downstream side of a fixed throttle passage 14 to regulate the opening or closing of the return passage 36. |
