JPS57143180A - Control method of variable displacement oil hydraulic pump - Google Patents

Control method of variable displacement oil hydraulic pump

Info

Publication number
JPS57143180A
JPS57143180A JP56027298A JP2729881A JPS57143180A JP S57143180 A JPS57143180 A JP S57143180A JP 56027298 A JP56027298 A JP 56027298A JP 2729881 A JP2729881 A JP 2729881A JP S57143180 A JPS57143180 A JP S57143180A
Authority
JP
Japan
Prior art keywords
solenoid valve
oil hydraulic
excited
piston
control method
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
JP56027298A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0124921B2 (enrdf_load_stackoverflow
Inventor
Eiki Izumi
Hiroshi Watanabe
Yukio Aoyanagi
Kazuo Honma
Yoshio Nakajima
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery 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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP56027298A priority Critical patent/JPS57143180A/ja
Publication of JPS57143180A publication Critical patent/JPS57143180A/ja
Publication of JPH0124921B2 publication Critical patent/JPH0124921B2/ja
Granted 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
    • F04B49/002—Hydraulic systems to change the pump delivery

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
JP56027298A 1981-02-26 1981-02-26 Control method of variable displacement oil hydraulic pump Granted JPS57143180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56027298A JPS57143180A (en) 1981-02-26 1981-02-26 Control method of variable displacement oil hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027298A JPS57143180A (en) 1981-02-26 1981-02-26 Control method of variable displacement oil hydraulic pump

Publications (2)

Publication Number Publication Date
JPS57143180A true JPS57143180A (en) 1982-09-04
JPH0124921B2 JPH0124921B2 (enrdf_load_stackoverflow) 1989-05-15

Family

ID=12217176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027298A Granted JPS57143180A (en) 1981-02-26 1981-02-26 Control method of variable displacement oil hydraulic pump

Country Status (1)

Country Link
JP (1) JPS57143180A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809504A (en) * 1986-01-11 1989-03-07 Hitachi Construction Machinery Co., Ltd. Control system for controlling input power to variable displacement hydraulic pumps of a hydraulic system
JPH10184605A (ja) * 1996-11-06 1998-07-14 Sms Schloeman Siemag Ag 静圧伝動装置
WO2016056244A1 (ja) * 2014-10-10 2016-04-14 川崎重工業株式会社 建設機械の油圧駆動システム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144301A (ja) * 1974-10-09 1976-04-15 Hitachi Ltd Kahentoshitsugatahonpuno toshitsuryoseigyoyoyuatsukairo
JPS5162402A (enrdf_load_stackoverflow) * 1974-11-27 1976-05-31 Ebara Mfg
JPS5276701A (en) * 1975-12-20 1977-06-28 Ebara Corp Energy-saving hydraulic pump and hydraulic circuit with this hydraulic pump
JPS53102104U (enrdf_load_stackoverflow) * 1977-01-24 1978-08-17

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5144301A (ja) * 1974-10-09 1976-04-15 Hitachi Ltd Kahentoshitsugatahonpuno toshitsuryoseigyoyoyuatsukairo
JPS5162402A (enrdf_load_stackoverflow) * 1974-11-27 1976-05-31 Ebara Mfg
JPS5276701A (en) * 1975-12-20 1977-06-28 Ebara Corp Energy-saving hydraulic pump and hydraulic circuit with this hydraulic pump
JPS53102104U (enrdf_load_stackoverflow) * 1977-01-24 1978-08-17

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809504A (en) * 1986-01-11 1989-03-07 Hitachi Construction Machinery Co., Ltd. Control system for controlling input power to variable displacement hydraulic pumps of a hydraulic system
JPH10184605A (ja) * 1996-11-06 1998-07-14 Sms Schloeman Siemag Ag 静圧伝動装置
US5916138A (en) * 1996-11-06 1999-06-29 Sms Schloemann-Siemag Aktiengesellschaft Hydrostatic transmission
WO2016056244A1 (ja) * 2014-10-10 2016-04-14 川崎重工業株式会社 建設機械の油圧駆動システム
JP2016080009A (ja) * 2014-10-10 2016-05-16 川崎重工業株式会社 建設機械の油圧駆動システム

Also Published As

Publication number Publication date
JPH0124921B2 (enrdf_load_stackoverflow) 1989-05-15

Similar Documents

Publication Publication Date Title
US4476679A (en) Civil engineering and construction machinery with hydraulic drive system
US3771564A (en) Pilot control valve
JPH08100803A (ja) 方向制御弁
JPS57143180A (en) Control method of variable displacement oil hydraulic pump
US4022023A (en) Hydraulic circuit for controlling actuators in a construction vehicle
CN1008200B (zh) 高水基锥阀式电液换向阀
JPS57201434A (en) Oil-pressure circuit for hydraulic shovel
JPS612908A (ja) 制御弁装置
JPS58113602A (ja) 液圧制御装置
US3579986A (en) Device for controlling pumps for operating hydraulic motors equipment
CA1092942A (en) Delaying control for hydraulic motors
US2558960A (en) Hydraulic power transmitting device
CN85100383A (zh) 内燃机动设备的遥控液压系统
JPH02566B2 (enrdf_load_stackoverflow)
JPS56156505A (en) Fluid circuit
JPS57140434A (en) Oil-pressure circuit for oil-pressure shovel
GB740429A (en) Improvements in or relating to selector valves for hydraulic systems
GB1479486A (en) Drive system for a self-propelled combine-harvester
JPS6362608B2 (enrdf_load_stackoverflow)
JPS57200730A (en) Clutch controller of compound clutch type multistage gear transmission
SU1666666A1 (ru) Гидропривод рабочего оборудовани погрузчика
SU1044084A1 (ru) Гидравлический привод дл станционного управлени шиберным затвором
JPH0115751B2 (enrdf_load_stackoverflow)
JPS59222601A (ja) 油圧シリンダ制御装置
SU1088960A1 (ru) Устройство автоматического переключени передач