JPS57153979A - Limiting control method and device for input horsepower into hydraulic pump - Google Patents

Limiting control method and device for input horsepower into hydraulic pump

Info

Publication number
JPS57153979A
JPS57153979A JP56037861A JP3786181A JPS57153979A JP S57153979 A JPS57153979 A JP S57153979A JP 56037861 A JP56037861 A JP 56037861A JP 3786181 A JP3786181 A JP 3786181A JP S57153979 A JPS57153979 A JP S57153979A
Authority
JP
Japan
Prior art keywords
value
rotational frequency
hydraulic pump
deviation
swash plate
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
JP56037861A
Other languages
Japanese (ja)
Other versions
JPS6230312B2 (en
Inventor
Kazuo Honma
Yoshio Nakajima
Eiki Izumi
Hiroshi Watanabe
Yukio Aoyanagi
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 JP56037861A priority Critical patent/JPS57153979A/en
Priority to KR1019810003829A priority patent/KR870000168B1/en
Priority to DE8181902759T priority patent/DE3176207D1/en
Priority to US06/387,884 priority patent/US4606313A/en
Priority to PCT/JP1981/000270 priority patent/WO1982001396A1/en
Priority to EP81902759A priority patent/EP0062072B1/en
Publication of JPS57153979A publication Critical patent/JPS57153979A/en
Publication of JPS6230312B2 publication Critical patent/JPS6230312B2/ja
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/31—Control of the fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To improve control function even in case of inertial load by making calculation of desired value for discharge pressure of a hydraulic pump from a deviation of rotational frequency and amount of slant rotation of a swash plate for said pump and comparing said value with actual discharger pressure. CONSTITUTION:A deviation of rotational frequency is obtained by signal 5a from detector 5 of an operational quantity corresponding to a desired rotational frequency of a prime mover 1 and signal 8a from output rotational frequency detector 8. Caliculation is performed for obtaining a desired value of dischrage pressure of an hydraulic pump from the deviation of rotational frequency and quantity of slant rotation of a swash plate of hydraulic pumps 2,2' so that an input torque of said pumps 2,2' is reduced as said deviation is increased. An increased value for said quantity of slant rotation obtained by the difference, which is found as a result of comparison of the desired value of discharge pressure with actual discharge pressure signals 12a, 12a', is added to or reduced from a command value to renew its value. The new value controls a slant rotation speed of the swash plate for the hydraulic pump through operation systems 3,3'.
JP56037861A 1980-10-09 1981-03-18 Limiting control method and device for input horsepower into hydraulic pump Granted JPS57153979A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP56037861A JPS57153979A (en) 1981-03-18 1981-03-18 Limiting control method and device for input horsepower into hydraulic pump
KR1019810003829A KR870000168B1 (en) 1980-10-09 1981-10-08 Apparatus for controlling a hydraulic power system
DE8181902759T DE3176207D1 (en) 1980-10-09 1981-10-08 Method for controlling a hydraulic power system
US06/387,884 US4606313A (en) 1980-10-09 1981-10-08 Method of and system for controlling hydraulic power system
PCT/JP1981/000270 WO1982001396A1 (en) 1980-10-09 1981-10-08 Method and apparatus for controlling a hydraulic power system
EP81902759A EP0062072B1 (en) 1980-10-09 1981-10-08 Method for controlling a hydraulic power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56037861A JPS57153979A (en) 1981-03-18 1981-03-18 Limiting control method and device for input horsepower into hydraulic pump

Publications (2)

Publication Number Publication Date
JPS57153979A true JPS57153979A (en) 1982-09-22
JPS6230312B2 JPS6230312B2 (en) 1987-07-01

Family

ID=12509321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56037861A Granted JPS57153979A (en) 1980-10-09 1981-03-18 Limiting control method and device for input horsepower into hydraulic pump

Country Status (1)

Country Link
JP (1) JPS57153979A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027793A (en) * 1983-07-27 1985-02-12 Hitachi Constr Mach Co Ltd Hydraulic driving apparatus
JPS61294440A (en) * 1985-06-21 1986-12-25 Konishiroku Photo Ind Co Ltd Method for replenishing processing replenisher of automatic developing device
JPH07259140A (en) * 1994-03-17 1995-10-09 Shin Caterpillar Mitsubishi Ltd Pump controller of hydraulic shovel
WO2000050757A1 (en) * 1999-02-26 2000-08-31 Magneti Marelli France Method and system for controlling pressure in a high pressure fuel pump supplying an internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6027793A (en) * 1983-07-27 1985-02-12 Hitachi Constr Mach Co Ltd Hydraulic driving apparatus
JPH0451670B2 (en) * 1983-07-27 1992-08-19 Hitachi Construction Machinery
JPS61294440A (en) * 1985-06-21 1986-12-25 Konishiroku Photo Ind Co Ltd Method for replenishing processing replenisher of automatic developing device
JPH0535861B2 (en) * 1985-06-21 1993-05-27 Konishiroku Photo Ind
JPH07259140A (en) * 1994-03-17 1995-10-09 Shin Caterpillar Mitsubishi Ltd Pump controller of hydraulic shovel
WO2000050757A1 (en) * 1999-02-26 2000-08-31 Magneti Marelli France Method and system for controlling pressure in a high pressure fuel pump supplying an internal combustion engine
FR2790283A1 (en) * 1999-02-26 2000-09-01 Magneti Marelli France METHOD AND SYSTEM FOR CONTROLLING THE PRESSURE OF A HIGH PRESSURE FUEL PUMP FOR FEEDING AN INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
JPS6230312B2 (en) 1987-07-01

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