Pumpensteuerungsvorrichtung und Fluiddrucksteuerungssystem

Details

Veröffentlichungs-Nr.

EP4729790

Anmeldetag

6. Juni 2024

Veröffentlichung

19. Dezember 2024

Rechtsraum

EP

IPC

F15B11/028, F15B11/02

Abstract

The discharge control unit 31 of the pump control device 30 has: the relief valve 40 provided in the discharge passage 15, the relief valve 40 being configured to be opened when the pressure in the discharge passage 15 reaches a predetermined valve opening pressure; the downstream restrictor 32 configured to apply resistance to the flow of the working oil guided from the supply passage 11 to the discharge passage 15 and passed through the relief valve 40; and the pressure sensor 35a configured to measure the pressure of the working oil guided to the resistance portion from the relief valve 40, the controller 50 is configured to: increase the delivery flow amount of the pump P in accordance with the increase in the operation input; store, in advance, the pressure-flow amount characteristic that is the relationship between the pressure loss and the passing flow amount in the downstream restrictor 32; acquire the flow amount of the working oil passing through the downstream restrictor 32 based on the pressure-flow amount characteristic of the downstream restrictor 32 and the pressure measured by the pressure sensor 35a; and control the delivery capacity of the pump P and the valve opening pressure of the relief valve 40 in accordance with the flow amount of the working oil passing through the downstream restrictor 32.

Anmelder

Firma

KYB Corporation

Land

🇯🇵 Japan

Fachgebiete