DE69123840D1 - Hydraulischer kreislauf und steuervorrichtung dafür - Google Patents

Hydraulischer kreislauf und steuervorrichtung dafür

Info

Publication number
DE69123840D1
DE69123840D1 DE69123840T DE69123840T DE69123840D1 DE 69123840 D1 DE69123840 D1 DE 69123840D1 DE 69123840 T DE69123840 T DE 69123840T DE 69123840 T DE69123840 T DE 69123840T DE 69123840 D1 DE69123840 D1 DE 69123840D1
Authority
DE
Germany
Prior art keywords
control device
hydraulic circuit
device therefor
therefor
hydraulic
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.)
Expired - Fee Related
Application number
DE69123840T
Other languages
English (en)
Other versions
DE69123840T2 (de
Inventor
Jeffrey Crosser
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.)
Caterpillar Inc
Original Assignee
Caterpillar 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 Caterpillar Inc filed Critical Caterpillar Inc
Application granted granted Critical
Publication of DE69123840D1 publication Critical patent/DE69123840D1/de
Publication of DE69123840T2 publication Critical patent/DE69123840T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • 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
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
    • 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
    • F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
    • 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
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/35—Directional control combined with flow control
    • 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
    • F15B2211/355—Pilot pressure control
    • 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
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • 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
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
DE69123840T 1991-02-15 1991-04-26 Hydraulischer kreislauf und steuervorrichtung dafür Expired - Fee Related DE69123840T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/655,703 US5138838A (en) 1991-02-15 1991-02-15 Hydraulic circuit and control system therefor
PCT/US1991/002828 WO1992014944A1 (en) 1991-02-15 1991-04-26 Hydraulic circuit and control system therefor

Publications (2)

Publication Number Publication Date
DE69123840D1 true DE69123840D1 (de) 1997-02-06
DE69123840T2 DE69123840T2 (de) 1997-07-10

Family

ID=24630013

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69123840T Expired - Fee Related DE69123840T2 (de) 1991-02-15 1991-04-26 Hydraulischer kreislauf und steuervorrichtung dafür

Country Status (7)

Country Link
US (1) US5138838A (de)
EP (1) EP0525118B1 (de)
JP (1) JPH05505444A (de)
AU (1) AU642503B2 (de)
CA (1) CA2073865A1 (de)
DE (1) DE69123840T2 (de)
WO (1) WO1992014944A1 (de)

Families Citing this family (119)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218820A (en) * 1991-06-25 1993-06-15 The University Of British Columbia Hydraulic control system with pressure responsive rate control
DE4122164C1 (de) * 1991-07-04 1993-01-14 Danfoss A/S, Nordborg, Dk
US5261234A (en) * 1992-01-07 1993-11-16 Caterpillar Inc. Hydraulic control apparatus
US5249421A (en) * 1992-01-13 1993-10-05 Caterpillar Inc. Hydraulic control apparatus with mode selection
US5207059A (en) * 1992-01-15 1993-05-04 Caterpillar Inc. Hydraulic control system having poppet and spool type valves
JPH05256303A (ja) * 1992-01-15 1993-10-05 Caterpillar Inc 油圧回路制御装置
DE4219787C1 (de) * 1992-06-17 1994-01-05 Jungheinrich Ag Fahrzeug mit batterie-elektrischem Fahr-Antrieb, insbesondere Hublader
DE4327667A1 (de) * 1993-08-17 1995-02-23 Sauer Sundstrand Gmbh & Co Steuerungsvorrichtung für verstellbare Hydromaschinen
US5438887A (en) * 1993-11-22 1995-08-08 Caterpillar Inc. Electro-hydraulic interlock system for a transmission
GB9503854D0 (en) * 1995-02-25 1995-04-19 Ultra Hydraulics Ltd Electrohydraulic proportional control valve assemblies
US5632190A (en) * 1995-05-26 1997-05-27 Hitachi Construction Machinery Co., Ltd. Burglarproof device for hydraulic machine
US5568759A (en) * 1995-06-07 1996-10-29 Caterpillar Inc. Hydraulic circuit having dual electrohydraulic control valves
AT402280B (de) * 1995-08-01 1997-03-25 Hoerbiger Gmbh Hydraulische betätigungsanordnung für ein fahrzeugverdeck
WO1997032135A1 (en) * 1996-02-28 1997-09-04 Komatsu Ltd. Control device for hydraulic drive machine
US5664477A (en) * 1996-05-10 1997-09-09 Caterpillar Inc. Control system for a hydraulic circuit
US5682792A (en) * 1996-06-28 1997-11-04 Caterpillar Inc. Dependent latching system for a transmission
US5682791A (en) * 1996-06-28 1997-11-04 Caterpillar Inc. Independent latching system for a transmission
US5878569A (en) * 1996-10-21 1999-03-09 Caterpillar Inc. Energy conversion system
US5868059A (en) * 1997-05-28 1999-02-09 Caterpillar Inc. Electrohydraulic valve arrangement
US5813226A (en) * 1997-09-15 1998-09-29 Caterpillar Inc. Control scheme for pressure relief
DE19745118B4 (de) * 1997-10-11 2006-10-12 Wabco Gmbh & Co.Ohg Druckerzeugungsanlage
AT405384B (de) * 1997-11-12 1999-07-26 Hoerbiger Gmbh Anordnung und verfahren zur hydraulischen betätigung beweglicher teile
US6349543B1 (en) * 1998-06-30 2002-02-26 Robert Moshe Lisniansky Regenerative adaptive fluid motor control
US6131391A (en) * 1998-12-23 2000-10-17 Caterpillar Inc. Control system for controlling the speed of a hydraulic motor
US6109284A (en) * 1999-02-26 2000-08-29 Sturman Industries, Inc. Magnetically-latchable fluid control valve system
US6354185B1 (en) 1999-06-17 2002-03-12 Sturman Industries, Inc. Flow manager module
US6557452B1 (en) * 1999-07-16 2003-05-06 Norgren Automotive, Inc. Valve and position control system integrable with clamp
DE19937012A1 (de) * 1999-08-05 2001-02-08 Bosch Gmbh Robert Förderaggregat für Kraftstoff
US6199378B1 (en) 1999-09-21 2001-03-13 Caterpillar Inc. Off-setting rate of pressure rise in a fluid system
US6216456B1 (en) * 1999-11-15 2001-04-17 Caterpillar Inc. Load sensing hydraulic control system for variable displacement pump
US6273034B1 (en) * 2000-05-17 2001-08-14 Detroit Diesel Corporation Closed loop fan control using fan motor pressure feedback
US6318234B1 (en) 2000-06-30 2001-11-20 Caterpillar Inc. Line vent arrangement for electro-hydraulic circuit
US6739293B2 (en) * 2000-12-04 2004-05-25 Sturman Industries, Inc. Hydraulic valve actuation systems and methods
US6694860B2 (en) 2001-12-10 2004-02-24 Caterpillar Inc Hydraulic control system with regeneration
US6662705B2 (en) * 2001-12-10 2003-12-16 Caterpillar Inc Electro-hydraulic valve control system and method
US6761029B2 (en) 2001-12-13 2004-07-13 Caterpillar Inc Swing control algorithm for hydraulic circuit
US6732512B2 (en) * 2002-09-25 2004-05-11 Husco International, Inc. Velocity based electronic control system for operating hydraulic equipment
US6718759B1 (en) * 2002-09-25 2004-04-13 Husco International, Inc. Velocity based method for controlling a hydraulic system
US7153106B2 (en) * 2003-01-16 2006-12-26 R. Conrader Company Air compressor unit inlet control
JP2004293628A (ja) * 2003-03-26 2004-10-21 Kayaba Ind Co Ltd 液圧シリンダの制御装置
DE10340504B4 (de) * 2003-09-03 2006-08-24 Sauer-Danfoss Aps Ventilanordnung zur Steuerung eines Hydraulikantriebs
DE10340505B4 (de) * 2003-09-03 2005-12-15 Sauer-Danfoss Aps Ventilanordnung zur Steuerung eines Hydraulikantriebs
DE10340506B4 (de) * 2003-09-03 2006-05-04 Sauer-Danfoss Aps Ventilanordnung zur Steuerung eines Hydraulikantriebes
US6996982B2 (en) * 2003-12-09 2006-02-14 The United States Of America As Represented By The Administrator Of The Environmental Protection Agency Method and device for switching hydraulic fluid supplies, such as for a hydraulic pump/motor
US7422033B2 (en) * 2004-12-16 2008-09-09 Husco International, Inc. Position feedback pilot valve actuator for a spool control valve
US7089733B1 (en) * 2005-02-28 2006-08-15 Husco International, Inc. Hydraulic control valve system with electronic load sense control
US7210292B2 (en) * 2005-03-30 2007-05-01 Caterpillar Inc Hydraulic system having variable back pressure control
DE102005022891A1 (de) 2005-04-05 2006-10-12 Bosch Rexroth Aktiengesellschaft Hydraulische Steueranordnung und Steuerblock
JP4494318B2 (ja) * 2005-09-26 2010-06-30 株式会社クボタ 作業機
US7430954B2 (en) * 2005-09-26 2008-10-07 Kubota Corporation Work machine
US7373869B2 (en) * 2006-03-13 2008-05-20 Husco International, Inc. Hydraulic system with mechanism for relieving pressure trapped in an actuator
DE102006012030A1 (de) * 2006-03-14 2007-09-20 Robert Bosch Gmbh Hydraulische Ventilanordnung
DE102006018706A1 (de) * 2006-04-21 2007-10-25 Robert Bosch Gmbh Hydraulische Steueranordnung
ATE422224T1 (de) * 2006-07-22 2009-02-15 Festo Ag & Co Kg Elektrofluidisches system, verfahren zu seiner inbetriebnahme und zugehörige startvorrichtung
US8679241B2 (en) 2006-10-30 2014-03-25 Novartis Ag Gas pressure monitor for pneumatic surgical machine
US8162000B2 (en) * 2006-12-13 2012-04-24 Novartis Ag Adjustable pneumatic system for a surgical machine
US9241830B2 (en) * 2006-12-15 2016-01-26 Novartis Ag Pressure monitor for pneumatic vitrectomy machine
US8312800B2 (en) * 2006-12-21 2012-11-20 Novartis Ag Pneumatic system for a vitrector
DE102007029358A1 (de) * 2007-06-26 2009-01-02 Robert Bosch Gmbh Verfahren und hydraulische Steueranordnung zur Druckmittelversorgung zumindest eines hydraulischen Verbrauchers
DE102007029355A1 (de) 2007-06-26 2009-01-02 Robert Bosch Gmbh Hydraulische Steueranordnung
DE112007003562T5 (de) * 2007-07-02 2010-05-12 Parker Hannifin Ab Fluidventilanordnung
CA2638113A1 (en) * 2007-07-27 2009-01-27 The Hartfiel Company Hydraulic actuator control system for refuse vehicles
US7905089B2 (en) * 2007-09-13 2011-03-15 Caterpillar Inc. Actuator control system implementing adaptive flow control
US8695333B2 (en) * 2007-12-12 2014-04-15 Volvo Construction Equipment Ab Method for when necessary automatically limiting a pressure in a hydraulic system during operation
DE102008008102A1 (de) 2008-02-08 2009-08-13 Robert Bosch Gmbh Verfahren und Vorrichtung zur Druckmittelversorgung von zumindest drei hydraulischen Verbrauchern
US20100307156A1 (en) 2009-06-04 2010-12-09 Bollinger Benjamin R Systems and Methods for Improving Drivetrain Efficiency for Compressed Gas Energy Storage and Recovery Systems
EP2280841A2 (de) 2008-04-09 2011-02-09 Sustainx, Inc. Systeme und verfahren zur energiespeicherung und & 8209;rückgewinnung unter verwendung von druckgas
US8359856B2 (en) 2008-04-09 2013-01-29 Sustainx Inc. Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery
US8474255B2 (en) 2008-04-09 2013-07-02 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US8225606B2 (en) 2008-04-09 2012-07-24 Sustainx, Inc. Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression
US7802426B2 (en) 2008-06-09 2010-09-28 Sustainx, Inc. System and method for rapid isothermal gas expansion and compression for energy storage
US8240140B2 (en) 2008-04-09 2012-08-14 Sustainx, Inc. High-efficiency energy-conversion based on fluid expansion and compression
US8037678B2 (en) 2009-09-11 2011-10-18 Sustainx, Inc. Energy storage and generation systems and methods using coupled cylinder assemblies
US8448433B2 (en) 2008-04-09 2013-05-28 Sustainx, Inc. Systems and methods for energy storage and recovery using gas expansion and compression
US7958731B2 (en) 2009-01-20 2011-06-14 Sustainx, Inc. Systems and methods for combined thermal and compressed gas energy conversion systems
US8677744B2 (en) 2008-04-09 2014-03-25 SustaioX, Inc. Fluid circulation in energy storage and recovery systems
US8479505B2 (en) 2008-04-09 2013-07-09 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8250863B2 (en) 2008-04-09 2012-08-28 Sustainx, Inc. Heat exchange with compressed gas in energy-storage systems
DE102008018936A1 (de) * 2008-04-15 2009-10-22 Robert Bosch Gmbh Steueranordnung zur Ansteuerung eines Wegeventils
DE202008008045U1 (de) * 2008-06-16 2009-11-05 Liebherr-Hydraulikbagger Gmbh Hydraulischer Antrieb
WO2010006193A1 (en) 2008-07-09 2010-01-14 Skyfuel, Inc. Space frame connector
EP2313703B1 (de) 2008-07-09 2016-12-28 Skyfuel, Inc. Sonnenkollektoren mit verschiebbar entfernbaren reflektierende tafeln für solarthermische anwendungen
US8904774B2 (en) 2008-08-22 2014-12-09 Skyfuel, Inc. Hydraulic-based rotational system for solar concentrators that resists high wind loads without a mechanical lock
WO2010038321A1 (ja) * 2008-10-01 2010-04-08 東洋機械金属株式会社 ダイカスト装置における射出シリンダの油圧回路
US8474254B2 (en) * 2008-11-06 2013-07-02 Purdue Research Foundation System and method for enabling floating of earthmoving implements
US8453441B2 (en) * 2008-11-06 2013-06-04 Purdue Research Foundation System and method for pump-controlled cylinder cushioning
DE102008064064A1 (de) 2008-12-19 2010-06-24 Robert Bosch Gmbh Hydraulische Steueranordnung
DE102008064138A1 (de) 2008-12-19 2010-07-01 Robert Bosch Gmbh Hydraulische Steueranordnung
DE102008064136A1 (de) 2008-12-19 2010-07-01 Robert Bosch Gmbh Hydraulische Steueranordnung
DE102008064139A1 (de) 2008-12-19 2010-07-01 Robert Bosch Gmbh Hydraulische Steueranordnung
DE102008064137A1 (de) 2008-12-19 2010-07-01 Robert Bosch Gmbh Hydraulische Steueranordnung
US7963110B2 (en) 2009-03-12 2011-06-21 Sustainx, Inc. Systems and methods for improving drivetrain efficiency for compressed gas energy storage
US8104274B2 (en) 2009-06-04 2012-01-31 Sustainx, Inc. Increased power in compressed-gas energy storage and recovery
GB2472005A (en) * 2009-07-20 2011-01-26 Ultronics Ltd Control arrangement for monitoring a hydraulic system and altering opening of spool valve in response to operating parameters
US8596057B2 (en) * 2009-10-06 2013-12-03 Caterpillar Inc. Method and apparatus for controlling a variable displacement hydraulic pump
US8375989B2 (en) * 2009-10-22 2013-02-19 Eaton Corporation Method of operating a control valve assembly for a hydraulic system
WO2011056855A1 (en) 2009-11-03 2011-05-12 Sustainx, Inc. Systems and methods for compressed-gas energy storage using coupled cylinder assemblies
EP2510268A2 (de) * 2009-12-10 2012-10-17 HydraForce, Inc. Ventil für proportionale bewegungssteuerung
US8171728B2 (en) 2010-04-08 2012-05-08 Sustainx, Inc. High-efficiency liquid heat exchange in compressed-gas energy storage systems
US8191362B2 (en) 2010-04-08 2012-06-05 Sustainx, Inc. Systems and methods for reducing dead volume in compressed-gas energy storage systems
US8234863B2 (en) 2010-05-14 2012-08-07 Sustainx, Inc. Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange
US20110289911A1 (en) * 2010-06-01 2011-12-01 Mark Phillip Vonderwell Hydraulic system and method of actively damping oscillations during operation thereof
US8495872B2 (en) 2010-08-20 2013-07-30 Sustainx, Inc. Energy storage and recovery utilizing low-pressure thermal conditioning for heat exchange with high-pressure gas
US8578708B2 (en) 2010-11-30 2013-11-12 Sustainx, Inc. Fluid-flow control in energy storage and recovery systems
BR112013016370A2 (pt) * 2011-01-04 2018-06-19 Crown Equip Corp veículo para o manuseio de materiais
KR101762951B1 (ko) * 2011-01-24 2017-07-28 두산인프라코어 주식회사 전자유압펌프를 포함하는 건설기계의 유압 시스템
WO2012158781A2 (en) 2011-05-17 2012-11-22 Sustainx, Inc. Systems and methods for efficient two-phase heat transfer in compressed-air energy storage systems
US20140150416A1 (en) * 2011-07-12 2014-06-05 Volvo Construction Equipment Ab Hydraulic actuator damping control system for construction machinery
US20130091834A1 (en) 2011-10-14 2013-04-18 Sustainx, Inc. Dead-volume management in compressed-gas energy storage and recovery systems
JP6209439B2 (ja) * 2013-12-19 2017-10-04 ナブテスコ株式会社 建設機械用方向切換弁、並びに、その開度決定装置、及びその開度決定方法
DE102015209657A1 (de) * 2014-12-08 2016-06-23 Robert Bosch Gmbh Hydraulische Ventilanordnung, hydraulischer Ventilblock mit einer derartigen Ventilanordnung, und hydraulischer Antrieb damit
EP3104022B1 (de) * 2015-06-12 2019-12-04 National Oilwell Varco Norway AS Verbesserungen bei der regelung hydraulischer antriebe
KR102582826B1 (ko) * 2016-09-12 2023-09-26 에이치디현대인프라코어 주식회사 건설기계의 제어 시스템 및 건설기계의 제어 방법
US10487860B2 (en) * 2016-11-09 2019-11-26 Eaton Intelligent Power Limited Method to automatically detect the area ratio of an actuator
US10337532B2 (en) * 2016-12-02 2019-07-02 Caterpillar Inc. Split spool valve
DE102017003017A1 (de) * 2017-03-29 2018-10-04 Wabco Gmbh Aktuator für ein automatisiertes oder automatisches Schaltgetriebe und Verfahren zur Steuerung dieses Aktuators
CN107237786B (zh) * 2017-07-20 2019-03-26 一重集团大连工程技术有限公司 液压站远程输送回油缓冲装置及使用方法
US10422358B2 (en) * 2017-10-31 2019-09-24 Deere & Company Method for improving electro-hydraulic system response
US11466426B2 (en) * 2019-05-09 2022-10-11 Caterpillar Trimble Control Technologies Llc Material moving machines and pilot hydraulic switching systems for use therein

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464443A (en) * 1967-10-19 1969-09-02 Koehring Co Pilot controllable valve mechanism
JPS52151496A (en) * 1976-06-10 1977-12-15 Nisshin Sangyo Co Hydraulic servo mechanism
DE2837795A1 (de) * 1978-08-30 1980-03-13 Bosch Gmbh Robert Hydraulische regeleinrichtung fuer einen arbeitszylinder eines landwirtschaftlichen fahrzeugs
JPS5872762A (ja) * 1980-08-06 1983-04-30 Hitachi Constr Mach Co Ltd 油圧駆動装置の制御装置
US4340087A (en) * 1980-08-21 1982-07-20 Sperry Corporation Power transmission
JPS5794104A (en) * 1980-12-03 1982-06-11 Hitachi Constr Mach Co Ltd Switching valve
DE3660226D1 (en) * 1985-02-04 1988-06-30 Hitachi Construction Machinery Control system for hydraulic circuit
DE3530657C2 (de) * 1985-08-28 1995-03-16 Westfalia Becorit Ind Tech Vorrichtung zum Ansteuern hydraulischer, im untertägigen Bergbau eingesetzter Verbraucher
KR920001170B1 (ko) * 1986-10-05 1992-02-06 히다찌 겡끼 가부시기가이샤 유압식 건설기계용 구동제어 시스템
IN171213B (de) * 1988-01-27 1992-08-15 Hitachi Construction Machinery
JPH01260125A (ja) * 1988-04-07 1989-10-17 Yutani Heavy Ind Ltd 油圧ショベルの油圧回路

Also Published As

Publication number Publication date
DE69123840T2 (de) 1997-07-10
AU642503B2 (en) 1993-10-21
AU7875391A (en) 1992-09-15
JPH05505444A (ja) 1993-08-12
US5138838A (en) 1992-08-18
EP0525118A4 (en) 1993-09-15
EP0525118A1 (de) 1993-02-03
CA2073865A1 (en) 1992-08-16
WO1992014944A1 (en) 1992-09-03
EP0525118B1 (de) 1996-12-27

Similar Documents

Publication Publication Date Title
DE69123840T2 (de) Hydraulischer kreislauf und steuervorrichtung dafür
DE69230055D1 (de) Hinweisvorrichtung und steuerungsverfahren
DE69423731D1 (de) Lade- entladevorrichtung und antriebssteuerkreis
NO921815L (no) Blind orolaryngeal og orooesophageal styre- og innretningsanordning
DE59205956D1 (de) Elektrohydraulische Steuereinrichtung
DE69508183T2 (de) Steuerschaltungsvorrichtung
DE4480327T1 (de) Kransteuervorrichtung
DE69219749T2 (de) Zeit-konstante Detektionsschaltung und Zeit-konstante Regelungschaltung
DE59204690D1 (de) Hydraulische steuereinrichtung
DE69322368D1 (de) Steuervorrichtung
DE59307183D1 (de) Steuerschaltung
DE69315318D1 (de) Steuerungseinrichtung
DE59401254D1 (de) Steuereinrichtung
DE59207959D1 (de) Hydraulische stelleinrichtung
DE9210647U1 (de) Hydraulische Steuervorrichtung
DE59206075D1 (de) Elektronisches Steuergerät
DE59108557D1 (de) Wissensbasierte steuer- und regeleinrichtung
DK0728092T3 (da) Hydraulisk styrekredsløb og styreindretning dertil
DE69220418T2 (de) Festkörper-Bildaufnahmevorrichtung und Steuermethode dafür
DE59205255D1 (de) Hydraulische steuereinrichtung
DE59405062D1 (de) Hydraulische Steuereinrichtung
DE69314379T2 (de) Steuerschaltung
DE69318777D1 (de) Kontraststeuerschaltung
ATA48091A (de) Steuer- und schaltvorrichtung
DE59304235D1 (de) Leistungssteuergerät

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee