JPS5779281A - Pressure liquid feeding apparatus - Google Patents

Pressure liquid feeding apparatus

Info

Publication number
JPS5779281A
JPS5779281A JP55154471A JP15447180A JPS5779281A JP S5779281 A JPS5779281 A JP S5779281A JP 55154471 A JP55154471 A JP 55154471A JP 15447180 A JP15447180 A JP 15447180A JP S5779281 A JPS5779281 A JP S5779281A
Authority
JP
Japan
Prior art keywords
droping
flow rate
action
rate control
control valve
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.)
Granted
Application number
JP55154471A
Other languages
Japanese (ja)
Other versions
JPS6020591B2 (en
Inventor
Takeshi Oe
Hidenori Maeda
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.)
Jidosha Kiki Co Ltd
Original Assignee
Jidosha Kiki 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 Jidosha Kiki Co Ltd filed Critical Jidosha Kiki Co Ltd
Priority to JP55154471A priority Critical patent/JPS6020591B2/en
Publication of JPS5779281A publication Critical patent/JPS5779281A/en
Publication of JPS6020591B2 publication Critical patent/JPS6020591B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Fluid Gearings (AREA)
  • Power Steering Mechanism (AREA)

Abstract

PURPOSE: To reduce the consumption power by selectively feeding the pressure liquid from a plurality of pumps by using a flowing passage switching valve which operates according to the magnitude of the load of a hydraulic equipment and using the flow rate control valve equipped with a droping mechanism.
CONSTITUTION: A flowing passage switching valve 12 which selectively feeds the pressure liquid from a plurality of pumps according to the magnitude of the load on the hydraulic equipment side is installed. When the discharge amount increases over a fixed value with increase of the number of revolution of the pump, a flow rate control valve 20 operates to maintain a constant feeding amount, and when the number of revolution increases further, droping action is generated with the variable orifice constituted of the orifice 22 in a main passage 10 and the small diameter part 30 of a spool 21.Thus, the back pressure applied onto the pump side is reduced by reduction of the feeing amount due to the action of the flow rate control valve 20, especially due to the droping action, and the pressure loss due to piping is reduced, and the energy saving effect can be increased further.
COPYRIGHT: (C)1982,JPO&Japio
JP55154471A 1980-10-31 1980-10-31 Pressure fluid supply device Expired JPS6020591B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154471A JPS6020591B2 (en) 1980-10-31 1980-10-31 Pressure fluid supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154471A JPS6020591B2 (en) 1980-10-31 1980-10-31 Pressure fluid supply device

Publications (2)

Publication Number Publication Date
JPS5779281A true JPS5779281A (en) 1982-05-18
JPS6020591B2 JPS6020591B2 (en) 1985-05-22

Family

ID=15584968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154471A Expired JPS6020591B2 (en) 1980-10-31 1980-10-31 Pressure fluid supply device

Country Status (1)

Country Link
JP (1) JPS6020591B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893565U (en) * 1981-12-21 1983-06-24 三菱自動車工業株式会社 Hydraulic control device for power steering device
US4838767A (en) * 1982-11-22 1989-06-13 Jidosha Kiki Co., Ltd. Balanced vane type oil pumps

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5893565U (en) * 1981-12-21 1983-06-24 三菱自動車工業株式会社 Hydraulic control device for power steering device
US4838767A (en) * 1982-11-22 1989-06-13 Jidosha Kiki Co., Ltd. Balanced vane type oil pumps

Also Published As

Publication number Publication date
JPS6020591B2 (en) 1985-05-22

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