JPS5676702A - Oil pressure controller - Google Patents

Oil pressure controller

Info

Publication number
JPS5676702A
JPS5676702A JP15282879A JP15282879A JPS5676702A JP S5676702 A JPS5676702 A JP S5676702A JP 15282879 A JP15282879 A JP 15282879A JP 15282879 A JP15282879 A JP 15282879A JP S5676702 A JPS5676702 A JP S5676702A
Authority
JP
Japan
Prior art keywords
control valve
flow control
pressure
load operation
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15282879A
Other languages
Japanese (ja)
Inventor
Shuji Koiwai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP15282879A priority Critical patent/JPS5676702A/en
Publication of JPS5676702A publication Critical patent/JPS5676702A/en
Pending legal-status Critical Current

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  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To stabilize the control of quantity discharged from a pump in no-load operation, by providing a pressure compensation type flow control valve in the neutral passage of directional control valves and using the controlling front pressure of the flow control valve to drive the servo cylinder of the variable-discharge pump.
CONSTITUTION: The neutral passage 15 of directional control valves 4, 5 is connected to a tank through a pressure compensation type flow control valve 16. The upstream side of the pressure compensation type flow control valve 16 is connected to the servo cylinder 17 of a variable-discharge pump 2 through a pilot passage 18. According to this constitution, even if the flow rate and pressure at an inlet port 21 fluctuate in no-load operation, the spool 20 of the flow control valve 16 moves with good response so that the pressure at the inlet port 21 is kept stable at a prescribed level. This results in stabilizing the control of quantity discharged from the pump 2 in no-load operation.
COPYRIGHT: (C)1981,JPO&Japio
JP15282879A 1979-11-26 1979-11-26 Oil pressure controller Pending JPS5676702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15282879A JPS5676702A (en) 1979-11-26 1979-11-26 Oil pressure controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15282879A JPS5676702A (en) 1979-11-26 1979-11-26 Oil pressure controller

Publications (1)

Publication Number Publication Date
JPS5676702A true JPS5676702A (en) 1981-06-24

Family

ID=15549021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15282879A Pending JPS5676702A (en) 1979-11-26 1979-11-26 Oil pressure controller

Country Status (1)

Country Link
JP (1) JPS5676702A (en)

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