JPS57131888A - Oil hydraulic controller - Google Patents

Oil hydraulic controller

Info

Publication number
JPS57131888A
JPS57131888A JP56016581A JP1658181A JPS57131888A JP S57131888 A JPS57131888 A JP S57131888A JP 56016581 A JP56016581 A JP 56016581A JP 1658181 A JP1658181 A JP 1658181A JP S57131888 A JPS57131888 A JP S57131888A
Authority
JP
Japan
Prior art keywords
pressure
control valve
flow control
delivery
pilot
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
JP56016581A
Other languages
Japanese (ja)
Inventor
Kenichi Akimoto
Yoshisuke Akita
Hiroshi Kondo
Kenichi Aeba
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki 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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP56016581A priority Critical patent/JPS57131888A/en
Publication of JPS57131888A publication Critical patent/JPS57131888A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To control feed set pressure without receiving pressure loss of a flow control valve, by guiding pilot oil pressure for a pressure control valve from a load line at the secondary side of the flow control valve and delivery control oil pressure of a variable delivery pump from immediately after delivery of the pump. CONSTITUTION:Pilot oil pressure for a pressure control valve 13, as shown by a pilot pipe line of broken line, is directly guided from a load line at the secondary side of a flow control valve 12, and control oil pressure to a control actuator 10a is guided from immediately after delivery of a variable delivery vane pump 10 at the primary side of the flow control valve 12. In this way, working pressure of a remote control relief valve 10 is not contained with difference pressure generated in the flow control valve 12 because of receiving pilot pressure directly from the load line. Accordingly, pressure control can be performed so as to obtain feed set pressure wuthout being affected by a loss of the flow control valve 12.
JP56016581A 1981-02-06 1981-02-06 Oil hydraulic controller Pending JPS57131888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56016581A JPS57131888A (en) 1981-02-06 1981-02-06 Oil hydraulic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56016581A JPS57131888A (en) 1981-02-06 1981-02-06 Oil hydraulic controller

Publications (1)

Publication Number Publication Date
JPS57131888A true JPS57131888A (en) 1982-08-14

Family

ID=11920241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56016581A Pending JPS57131888A (en) 1981-02-06 1981-02-06 Oil hydraulic controller

Country Status (1)

Country Link
JP (1) JPS57131888A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6408975B1 (en) 2000-08-09 2002-06-25 Visteon Global Technologies, Inc. Variable displacement pump with electronic control
US6468044B1 (en) 2000-06-15 2002-10-22 Visteon Global Technologies, Inc. Variable displacement pump

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112886A (en) * 1979-02-17 1980-09-01 Bosch Gmbh Robert Device for controlling discharge flow rate of adjustable pump and limiting its discharge pressure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112886A (en) * 1979-02-17 1980-09-01 Bosch Gmbh Robert Device for controlling discharge flow rate of adjustable pump and limiting its discharge pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6468044B1 (en) 2000-06-15 2002-10-22 Visteon Global Technologies, Inc. Variable displacement pump
US6408975B1 (en) 2000-08-09 2002-06-25 Visteon Global Technologies, Inc. Variable displacement pump with electronic control

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