DE2335703A1 - Hydraulikanlage - Google Patents

Hydraulikanlage

Info

Publication number
DE2335703A1
DE2335703A1 DE19732335703 DE2335703A DE2335703A1 DE 2335703 A1 DE2335703 A1 DE 2335703A1 DE 19732335703 DE19732335703 DE 19732335703 DE 2335703 A DE2335703 A DE 2335703A DE 2335703 A1 DE2335703 A1 DE 2335703A1
Authority
DE
Germany
Prior art keywords
pump
valve
control
control signal
pressure
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
DE19732335703
Other languages
German (de)
English (en)
Inventor
Raymond E Johnson
Kenneth G Mcmillen
Wendell E Miller
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.)
Borg Warner Corp
Original Assignee
Borg Warner Corp
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 Borg Warner Corp filed Critical Borg Warner Corp
Publication of DE2335703A1 publication Critical patent/DE2335703A1/de
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/27—Directional control by means of the pressure source
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/88—Control measures for saving energy

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
DE19732335703 1972-07-13 1973-07-13 Hydraulikanlage Pending DE2335703A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27130372A 1972-07-13 1972-07-13

Publications (1)

Publication Number Publication Date
DE2335703A1 true DE2335703A1 (de) 1974-01-24

Family

ID=23035011

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732335703 Pending DE2335703A1 (de) 1972-07-13 1973-07-13 Hydraulikanlage

Country Status (11)

Country Link
US (1) US3788077A (xx)
JP (1) JPS4957275A (xx)
AU (1) AU5789773A (xx)
BE (1) BE802105A (xx)
BR (1) BR7305249D0 (xx)
CA (1) CA988812A (xx)
DE (1) DE2335703A1 (xx)
FR (1) FR2193153B1 (xx)
IT (1) IT991259B (xx)
NL (1) NL7309725A (xx)
ZA (1) ZA734473B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128382A1 (de) * 1980-07-28 1982-06-24 Kabushiki Kaisha Komatsu Seisakusho, Tokyo Hydraulische schaltvorrichtung fuer pumpen variabler verdraengung
DE3109045A1 (de) * 1981-03-10 1982-09-16 Alfred Teves Gmbh, 6000 Frankfurt Regelbare hydraulikpumpe
DE4322127B4 (de) * 1992-07-03 2008-04-10 Bosch Rexroth D.S.I. Hydraulische Schaltung zum Druckantrieb eines hydraulischen Verteilers des Typs mit offenem Zentrum

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4178962A (en) * 1972-10-30 1979-12-18 Tomco, Inc. Control valve with flow control means
JPS5133201U (xx) * 1974-09-03 1976-03-11
US4197705A (en) * 1978-05-30 1980-04-15 General Signal Corporation Hydraulic control system
US4408453A (en) * 1981-01-16 1983-10-11 General Signal Corporation Hydraulic control system
JPH0735783B2 (ja) * 1986-02-17 1995-04-19 川崎重工業株式会社 可変容量形ポンプの流量制御回路
JPH0643523Y2 (ja) * 1987-10-14 1994-11-14 カヤバ工業株式会社 建設機械用制御弁
JPH074321Y2 (ja) * 1988-02-05 1995-02-01 日立建機株式会社 アクチュエータ駆動回路
US5265422A (en) * 1992-05-15 1993-11-30 Sauer Inc. Pilot-operated pressure override valve
FR2827952A1 (fr) * 2001-07-27 2003-01-31 Osmos Sa Dispositif de mesure d'un deplacement et procede associe
US20060242955A1 (en) * 2005-04-19 2006-11-02 Clark Equipment Company Hydraulic system with piston pump and open center valve
US9347200B2 (en) 2012-06-04 2016-05-24 Cnh Industrial America Llc Fluid control system for work vehicle
JP5758348B2 (ja) * 2012-06-15 2015-08-05 住友建機株式会社 建設機械の油圧回路
US9334629B2 (en) 2013-03-15 2016-05-10 Deere And Company Open-center hydraulic system with machine information-based flow control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2238060A (en) * 1938-02-08 1941-04-15 Manly Corp Fluid pressure feed and rapid traverse system of transmission of power
US3250227A (en) * 1963-08-09 1966-05-10 American Brake Shoe Co Torque control apparatus for hydraulic power units
GB1126873A (en) * 1964-09-22 1968-09-11 Sperry Rand Corp Improvements in hydraulic supply and control systems
US3366064A (en) * 1965-03-10 1968-01-30 Borg Warner Control for hydraulic apparatus
US3444689A (en) * 1967-02-02 1969-05-20 Weatherhead Co Differential pressure compensator control
GB1262488A (en) * 1968-06-04 1972-02-02 Dowty Technical Dev Ltd Hydraulic apparatus for including variable-delivery pumps

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128382A1 (de) * 1980-07-28 1982-06-24 Kabushiki Kaisha Komatsu Seisakusho, Tokyo Hydraulische schaltvorrichtung fuer pumpen variabler verdraengung
DE3109045A1 (de) * 1981-03-10 1982-09-16 Alfred Teves Gmbh, 6000 Frankfurt Regelbare hydraulikpumpe
DE4322127B4 (de) * 1992-07-03 2008-04-10 Bosch Rexroth D.S.I. Hydraulische Schaltung zum Druckantrieb eines hydraulischen Verteilers des Typs mit offenem Zentrum

Also Published As

Publication number Publication date
NL7309725A (xx) 1974-01-15
AU5789773A (en) 1975-01-09
ZA734473B (en) 1975-01-29
BR7305249D0 (pt) 1974-08-15
CA988812A (en) 1976-05-11
IT991259B (it) 1975-07-30
FR2193153A1 (xx) 1974-02-15
JPS4957275A (xx) 1974-06-04
BE802105A (fr) 1973-11-05
FR2193153B1 (xx) 1976-06-18
US3788077A (en) 1974-01-29

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