EP0402871A3 - Control device for variable displacement pump - Google Patents

Control device for variable displacement pump Download PDF

Info

Publication number
EP0402871A3
EP0402871A3 EP19900111124 EP90111124A EP0402871A3 EP 0402871 A3 EP0402871 A3 EP 0402871A3 EP 19900111124 EP19900111124 EP 19900111124 EP 90111124 A EP90111124 A EP 90111124A EP 0402871 A3 EP0402871 A3 EP 0402871A3
Authority
EP
European Patent Office
Prior art keywords
control device
line
variable displacement
displacement pump
throttled
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
EP19900111124
Other languages
German (de)
French (fr)
Other versions
EP0402871B1 (en
EP0402871A2 (en
Inventor
Werner Dipl.-Ing. Hörmann
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.)
Brueninghaus Hydromatik GmbH
Original Assignee
Brueninghaus Hydromatik GmbH
Hydromatik GmbH
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 Brueninghaus Hydromatik GmbH, Hydromatik GmbH filed Critical Brueninghaus Hydromatik GmbH
Publication of EP0402871A2 publication Critical patent/EP0402871A2/en
Publication of EP0402871A3 publication Critical patent/EP0402871A3/en
Application granted granted Critical
Publication of EP0402871B1 publication Critical patent/EP0402871B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • 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
    • F04B49/08—Regulating by delivery pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Die Erfindung betrifft eine Regeleinrichtung für eine verstellbare Pumpe (6), mit einer einen Verstellzylinder (4) aufweisenden hydraulischen Verstelleinrichtung (5) und einem Regelventil (51), in dem ein Leistungsregler (52) zur Einstellung der Fördermenge sowie ein Druckregler (73) zur Beschränkung des Arbeitsdrucks (A) an einer bestimmten Obergrenze integriert sind, wobei mit der den Verstellzylinder (4) hydraulisch beaufschlagenden Leitung (19, 62) eine gedrosselte Ablaufleitung abzweigt, die zum Rücklauf (9) führt. Aufgabengemäß soll der für eine dynamische Stabilität erforderliche Strömungsverlust verringert werden. Dies wird dadurch erreicht, daß der Strömungsdurchgang der gedrosselten Ablaufleitung (92,89,93,47) mit zunehmendem Ansprechen des Druckreglers (73) geöffnet wird. The invention relates to a control device for an adjustable pump (6), with a hydraulic adjustment device (5) having an adjustment cylinder (4) and a control valve (51), in which a power controller (52) for setting the delivery rate and a pressure controller (73) to limit the working pressure (A) are integrated at a certain upper limit, the throttled discharge line branching off with the line (19, 62) acting hydraulically on the adjusting cylinder (4), which leads to the return line (9). According to the task, the flow loss required for dynamic stability should be reduced. This is achieved in that the flow passage of the throttled drain line (92,89,93,47) is opened with increasing response of the pressure regulator (73).

EP90111124A 1989-06-12 1990-06-12 Control device for variable displacement pump Expired - Lifetime EP0402871B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919175 1989-06-12
DE3919175A DE3919175A1 (en) 1989-06-12 1989-06-12 CONTROL DEVICE FOR AN ADJUSTABLE PUMP

Publications (3)

Publication Number Publication Date
EP0402871A2 EP0402871A2 (en) 1990-12-19
EP0402871A3 true EP0402871A3 (en) 1992-09-02
EP0402871B1 EP0402871B1 (en) 1996-04-17

Family

ID=6382606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90111124A Expired - Lifetime EP0402871B1 (en) 1989-06-12 1990-06-12 Control device for variable displacement pump

Country Status (2)

Country Link
EP (1) EP0402871B1 (en)
DE (2) DE3919175A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208925C1 (en) * 1992-03-19 1993-06-03 Hydromatik Gmbh, 7915 Elchingen, De
DE4417962A1 (en) * 1994-05-21 1995-11-23 Rexroth Mannesmann Gmbh Control arrangement for at least two hydraulic consumers
DE19756600C1 (en) * 1997-12-18 1999-08-26 Brueninghaus Hydromatik Gmbh Capacity control valve
DE10358727B3 (en) * 2003-12-15 2005-08-25 Brueninghaus Hydromatik Gmbh Total power controller
DE102011108285A1 (en) * 2010-12-22 2012-06-28 Robert Bosch Gmbh Hydraulic drive
CA3076804C (en) * 2017-12-04 2022-09-06 Halliburton Energy Services, Inc. Safety pressure limiting system and method for positive displacement pumps with optional automatic restart
DE102018216831A1 (en) 2018-10-01 2020-04-02 Robert Bosch Gmbh Control device for pump pressure and volume flow with concentric control spools
CN114135458A (en) * 2021-11-30 2022-03-04 力源液压（苏州）有限公司 Constant power control structure of plunger pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911695C3 (en) * 1969-03-03 1975-01-02 Mannesmann-Meer Ag, 4050 Moenchengladbach Power controller with pressure cut-off for hydraulic pumps or motors of the axial piston swashplate design
DE1922145A1 (en) * 1969-04-25 1970-10-29 Bellows Valvair Kaemper Gmbh Combination controller
DE2349124C2 (en) * 1973-09-29 1985-09-05 Mannesmann Rexroth GmbH, 8770 Lohr Control device for a hydraulic variable displacement pump working in storage mode
DE2516765C3 (en) * 1975-04-16 1985-12-05 Mannesmann Rexroth GmbH, 8770 Lohr Control valve for a vane pump
DE3644769A1 (en) * 1986-12-30 1988-07-14 Brueninghaus Hydraulik Gmbh CONTROL DEVICE FOR AN ADJUSTABLE HYDROSTATIC MACHINE

Also Published As

Publication number Publication date
EP0402871B1 (en) 1996-04-17
DE59010287D1 (en) 1996-05-23
EP0402871A2 (en) 1990-12-19
DE3919175A1 (en) 1990-12-13
DE3919175C2 (en) 1993-01-07

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