JPS5770981A - Valiable displacement hydraulic pump - Google Patents

Valiable displacement hydraulic pump

Info

Publication number
JPS5770981A
JPS5770981A JP55147130A JP14713080A JPS5770981A JP S5770981 A JPS5770981 A JP S5770981A JP 55147130 A JP55147130 A JP 55147130A JP 14713080 A JP14713080 A JP 14713080A JP S5770981 A JPS5770981 A JP S5770981A
Authority
JP
Japan
Prior art keywords
valves
pump
engine
switchover
tanks
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
JP55147130A
Other languages
Japanese (ja)
Inventor
Fusao Higashida
Takao Komada
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Daikin Kogyo 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 Daikin Industries Ltd, Daikin Kogyo Co Ltd filed Critical Daikin Industries Ltd
Priority to JP55147130A priority Critical patent/JPS5770981A/en
Publication of JPS5770981A publication Critical patent/JPS5770981A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To prevent occurance of engine stop, by connecting the discharge conduit of a speed sensing pump to the pressurized chamber of a switch over valves, and by connecting the piston chamber of control valve units to tank T via switchover valves.
CONSTITUTION: The discharge conduit of a speed sensing pump P is connected to the pressurized chambers of switchover valves 9, and the piston chambers 6a of control valves 6 provided on the sides of push-pressing body of control valve units B are connected to tanks T by way of the switchover valves 9. Thus, when the driving torque of pump exceeds engine torque and the rotational speed of engine E drops less than a predetermined valve, the occurance of engine stop can be prevented in such a manner than the piston chambers 6a are released to the tanks T by switching the switchover valves 9, and the output of the pump elements A can be restrained by reducing the discharging amount in response to the discharging pressure.
COPYRIGHT: (C)1982,JPO&Japio
JP55147130A 1980-10-20 1980-10-20 Valiable displacement hydraulic pump Pending JPS5770981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55147130A JPS5770981A (en) 1980-10-20 1980-10-20 Valiable displacement hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55147130A JPS5770981A (en) 1980-10-20 1980-10-20 Valiable displacement hydraulic pump

Publications (1)

Publication Number Publication Date
JPS5770981A true JPS5770981A (en) 1982-05-01

Family

ID=15423232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55147130A Pending JPS5770981A (en) 1980-10-20 1980-10-20 Valiable displacement hydraulic pump

Country Status (1)

Country Link
JP (1) JPS5770981A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115478A (en) * 1982-12-16 1984-07-03 アベックス・コ−ポレ−ション Variable discharge quantity pump
JPH033976A (en) * 1989-05-30 1991-01-10 Honda Motor Co Ltd Hydraulic pump control device for vehicle
JP2002202063A (en) * 2000-12-28 2002-07-19 Kayaba Ind Co Ltd Swash plate type piston pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59115478A (en) * 1982-12-16 1984-07-03 アベックス・コ−ポレ−ション Variable discharge quantity pump
JPH033976A (en) * 1989-05-30 1991-01-10 Honda Motor Co Ltd Hydraulic pump control device for vehicle
JP2002202063A (en) * 2000-12-28 2002-07-19 Kayaba Ind Co Ltd Swash plate type piston pump

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