EP1065379A3 - Electrohydraulic pressure supply with variable displacement pump and controllable electric drive - Google Patents

Electrohydraulic pressure supply with variable displacement pump and controllable electric drive Download PDF

Info

Publication number
EP1065379A3
EP1065379A3 EP00110414A EP00110414A EP1065379A3 EP 1065379 A3 EP1065379 A3 EP 1065379A3 EP 00110414 A EP00110414 A EP 00110414A EP 00110414 A EP00110414 A EP 00110414A EP 1065379 A3 EP1065379 A3 EP 1065379A3
Authority
EP
European Patent Office
Prior art keywords
electric drive
variable displacement
displacement pump
pressure supply
controls
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
EP00110414A
Other languages
German (de)
French (fr)
Other versions
EP1065379B1 (en
EP1065379A2 (en
Inventor
Reinhard Dr. Orthmann
Michael Dr. Jürging
Gerald Dr. Bolz
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1065379A2 publication Critical patent/EP1065379A2/en
Publication of EP1065379A3 publication Critical patent/EP1065379A3/en
Application granted granted Critical
Publication of EP1065379B1 publication Critical patent/EP1065379B1/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
    • 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
    • F04B49/06—Control using electricity
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/07—Pressure difference over the 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
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Abstract

The electrohydraulic pressure supply has an electric drive motor (M) with an adjustable rpm (n), a variable displacement pump (1), whose stroke volume (V) can be adjusted by an adjustment component (5) and supply pipes (3) and connections (4). A regulator (Reg) controls the rpm. A control (Strg) controls a pump adjuster (PV) that controls the adjustment component. The regulator has the actual volume flow (Qist) determined by a unit (Q) and the desired volume flow (QSoll) as inputs. The control has the pressure difference ( DELTA p) measured between the supply and suction pipes of the pump and a reference pressure (pref) as inputs.
EP00110414A 1999-07-02 2000-05-16 Electrohydraulic pressure supply with variable displacement pump and controllable electric drive Expired - Lifetime EP1065379B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19930648 1999-07-02
DE19930648A DE19930648A1 (en) 1999-07-02 1999-07-02 Electrohydraulic pressure supply with adjustable pump and adjustable electric drive

Publications (3)

Publication Number Publication Date
EP1065379A2 EP1065379A2 (en) 2001-01-03
EP1065379A3 true EP1065379A3 (en) 2002-06-12
EP1065379B1 EP1065379B1 (en) 2004-03-10

Family

ID=7913492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110414A Expired - Lifetime EP1065379B1 (en) 1999-07-02 2000-05-16 Electrohydraulic pressure supply with variable displacement pump and controllable electric drive

Country Status (5)

Country Link
US (1) US6347516B1 (en)
EP (1) EP1065379B1 (en)
JP (1) JP2001041167A (en)
AT (1) ATE261546T1 (en)
DE (2) DE19930648A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10158341B4 (en) * 2000-12-07 2010-11-18 Ixetic Bad Homburg Gmbh Pump for suspension systems
DE10104635A1 (en) * 2001-02-02 2002-10-02 Joma Hydromechanic Gmbh Method for maintaining a constant output value, e.g. pressure, feed volume or capacity for vehicle oil pump, using rotational velocity transducer to adjust rotational speed of pump
DE10307190A1 (en) * 2003-02-20 2004-09-16 O & K Orenstein & Koppel Gmbh Method for controlling a hydraulic system of a mobile work machine
DE102005023430A1 (en) * 2005-03-15 2006-09-21 Fresenius Medical Care Deutschland Gmbh Method and device for determining the effective delivery rate or setting the speed of a peristaltic pump
DE102007007005B4 (en) 2007-02-08 2021-12-02 Robert Bosch Gmbh Electro-hydraulic control arrangement
US20110176940A1 (en) * 2008-07-08 2011-07-21 Ellis Shawn D High pressure intensifier system
DE102009021866A1 (en) * 2009-05-19 2010-11-25 Sauer-Danfoss Gmbh & Co Ohg Hydro drive with an independent feed pump
US9222575B2 (en) * 2010-12-22 2015-12-29 Gm Global Technology Operations, Llc Electric pump
US9062665B2 (en) * 2013-01-15 2015-06-23 Husco International, Inc. Hydraulic piston pump with throttle control
DE102013005774B4 (en) * 2013-04-05 2021-01-21 Robert Bosch Gmbh USE OF A VARIABLE SPEED HYDRAULIC PUMP DRIVEN BY A MOTOR AS A HYDROSTATIC TRANSMISSION
CN105829711B (en) 2013-12-18 2017-12-15 舍弗勒技术股份两合公司 Variable pump
WO2015144155A1 (en) * 2014-03-24 2015-10-01 Schaeffler Technologies AG & Co. KG Actuator which can be drive-coupled and has a variable displacement pump
DE102015209951A1 (en) * 2015-05-29 2016-12-01 Zf Friedrichshafen Ag Oil delivery system of a motor vehicle
SE544986C2 (en) * 2019-04-05 2023-02-21 Epiroc Rock Drills Ab Method and system for controlling operation of a hydraulic system of a drilling rig
DE102022203051B3 (en) 2022-03-29 2023-10-12 Robert Bosch Gesellschaft mit beschränkter Haftung Method for operating a variable speed pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600364A (en) * 1983-06-20 1986-07-15 Kabushiki Kaisha Komatsu Seisakusho Fluid operated pump displacement control system
EP0277253A1 (en) * 1986-08-15 1988-08-10 Kabushiki Kaisha Komatsu Seisakusho Hydraulic pump control unit
US4930992A (en) * 1987-07-09 1990-06-05 Tokyo Keiki Company Ltd. Control apparatus of variable delivery pump
EP0440802A1 (en) * 1989-07-27 1991-08-14 Hitachi Construction Machinery Co., Ltd. Device for controlling hydraulic pump
US5307288A (en) * 1991-06-07 1994-04-26 Haines Lawrence A Unitary fluid flow production and control system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638677A (en) * 1991-03-29 1997-06-17 Hitachi Construction Machinery Co., Ltd. Control device for hydraulically propelled work vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600364A (en) * 1983-06-20 1986-07-15 Kabushiki Kaisha Komatsu Seisakusho Fluid operated pump displacement control system
EP0277253A1 (en) * 1986-08-15 1988-08-10 Kabushiki Kaisha Komatsu Seisakusho Hydraulic pump control unit
US4930992A (en) * 1987-07-09 1990-06-05 Tokyo Keiki Company Ltd. Control apparatus of variable delivery pump
EP0440802A1 (en) * 1989-07-27 1991-08-14 Hitachi Construction Machinery Co., Ltd. Device for controlling hydraulic pump
US5307288A (en) * 1991-06-07 1994-04-26 Haines Lawrence A Unitary fluid flow production and control system

Also Published As

Publication number Publication date
EP1065379B1 (en) 2004-03-10
US6347516B1 (en) 2002-02-19
ATE261546T1 (en) 2004-03-15
JP2001041167A (en) 2001-02-13
EP1065379A2 (en) 2001-01-03
DE19930648A1 (en) 2001-01-11
DE50005576D1 (en) 2004-04-15

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