IT972396B - Sistema di comando di una ponpa a volume variabile - Google Patents

Sistema di comando di una ponpa a volume variabile

Info

Publication number
IT972396B
IT972396B IT53835/72A IT5383572A IT972396B IT 972396 B IT972396 B IT 972396B IT 53835/72 A IT53835/72 A IT 53835/72A IT 5383572 A IT5383572 A IT 5383572A IT 972396 B IT972396 B IT 972396B
Authority
IT
Italy
Prior art keywords
ponp
control system
variable volume
variable
volume
Prior art date
Application number
IT53835/72A
Other languages
English (en)
Original Assignee
Deere And Co Inc
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 Deere And Co Inc filed Critical Deere And Co Inc
Application granted granted Critical
Publication of IT972396B publication Critical patent/IT972396B/it

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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0435—Arrangements for disconnecting the pistons from the actuated cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
IT53835/72A 1971-11-11 1972-11-06 Sistema di comando di una ponpa a volume variabile IT972396B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19769971A 1971-11-11 1971-11-11

Publications (1)

Publication Number Publication Date
IT972396B true IT972396B (it) 1974-05-20

Family

ID=22730400

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53835/72A IT972396B (it) 1971-11-11 1972-11-06 Sistema di comando di una ponpa a volume variabile

Country Status (6)

Country Link
US (1) US3738111A (it)
CA (1) CA967809A (it)
DE (1) DE2254590A1 (it)
FR (1) FR2160171A5 (it)
GB (1) GB1344798A (it)
IT (1) IT972396B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995973A (en) * 1975-09-04 1976-12-07 Deere & Company Variable displacement hydraulic system
US4028890A (en) * 1976-01-23 1977-06-14 Caterpillar Tractor Co. Piston pump assembly utilizing load pressure control
US3987622A (en) * 1976-02-02 1976-10-26 Caterpillar Tractor Co. Load controlled fluid system having parallel work elements
US3990236A (en) * 1976-02-23 1976-11-09 Caterpillar Tractor Co. Load responsive pump controls of a fluid system
JPS5393265A (en) * 1977-01-26 1978-08-16 Girling Ltd System of hydraulic pressure
US4475870A (en) * 1980-08-19 1984-10-09 Karl Eickmann Hydraulic arrangement
US4519752A (en) * 1982-09-03 1985-05-28 Applied Power Inc. Control system for a variable displacement pump
GB2172665B (en) * 1985-02-06 1988-07-27 Aisin Seiki Hydraulic pump assemblies
US4648803A (en) * 1985-09-17 1987-03-10 Deere & Company Control circuit and control valve for radial piston pump
US4945816A (en) * 1985-12-02 1990-08-07 Black Gold Development Corporation Radial piston hydraulic motor with rotary cam position encoder and valve control system
US6651545B2 (en) * 2001-12-13 2003-11-25 Caterpillar Inc Fluid translating device
DE602004003894T2 (de) * 2004-01-19 2007-10-25 Delphi Technologies, Inc., Troy Hydraulische Pumpe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851952A (en) * 1957-06-27 1958-09-16 Lane Edwin Leonard Hydraulic pumps
US3002462A (en) * 1957-08-13 1961-10-03 Racine Hydraulics & Machinery Fluid translating apparatus
US3302585A (en) * 1962-09-24 1967-02-07 Abex Corp Control for variable displacement pump or motor
US3422726A (en) * 1966-06-27 1969-01-21 Nathan Gottlieb Motorized spindle
US3412683A (en) * 1966-08-25 1968-11-26 Ulrich Mfg Co Hydraulic system control
US3444689A (en) * 1967-02-02 1969-05-20 Weatherhead Co Differential pressure compensator control
US3465680A (en) * 1967-05-31 1969-09-09 Sundstrand Corp Hydraulic pump or motor unit

Also Published As

Publication number Publication date
DE2254590A1 (de) 1973-05-17
US3738111A (en) 1973-06-12
CA967809A (en) 1975-05-20
FR2160171A5 (it) 1973-06-22
GB1344798A (en) 1974-01-23

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