EP0582099A3 - Hydraulic system with load sensing - Google Patents
Hydraulic system with load sensing Download PDFInfo
- Publication number
- EP0582099A3 EP0582099A3 EP9393110985A EP93110985A EP0582099A3 EP 0582099 A3 EP0582099 A3 EP 0582099A3 EP 9393110985 A EP9393110985 A EP 9393110985A EP 93110985 A EP93110985 A EP 93110985A EP 0582099 A3 EP0582099 A3 EP 0582099A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- load sensing
- hydraulic
- control valve
- pump
- sensing port
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Lift Valve (AREA)
- Vehicle Body Suspensions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Actuator (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US923762 | 1992-08-03 | ||
US07/923,762 US5245827A (en) | 1992-08-03 | 1992-08-03 | Supply valve arrangement for closed center hydraulic system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0582099A2 EP0582099A2 (en) | 1994-02-09 |
EP0582099A3 true EP0582099A3 (en) | 1994-08-24 |
EP0582099B1 EP0582099B1 (en) | 1997-01-02 |
Family
ID=25449226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93110985A Expired - Lifetime EP0582099B1 (en) | 1992-08-03 | 1993-07-09 | Hydraulic system with load sensing |
Country Status (10)
Country | Link |
---|---|
US (1) | US5245827A (en) |
EP (1) | EP0582099B1 (en) |
JP (1) | JPH06159305A (en) |
AT (1) | ATE147139T1 (en) |
AU (1) | AU659751B2 (en) |
BR (1) | BR9303240A (en) |
CA (1) | CA2101235C (en) |
DE (1) | DE59304948D1 (en) |
ES (1) | ES2095527T3 (en) |
MX (1) | MX9304408A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4311191C2 (en) * | 1993-04-05 | 1995-02-02 | Deere & Co | Hydraulic system for supplying open or closed hydraulic functions |
DE10040395A1 (en) | 1999-09-14 | 2001-03-22 | Caterpillar Inc | Hydraulic control system for improving pump response and dynamic match of pump and valve has control unit for controlling rate of change of cross-section of main flow control valve |
US20060196179A1 (en) * | 2005-03-01 | 2006-09-07 | Arun Kesavan | Load-sensing integrated brake and fan hydraulic system |
US8267004B2 (en) * | 2009-05-20 | 2012-09-18 | Lifetime Enterprises, Llc | Adaptable hydraulic control system |
CN102734276B (en) * | 2012-06-28 | 2015-07-01 | 三一汽车起重机械有限公司 | Load sensing electric proportion hydraulic control system and engineering machinery |
CN103148038A (en) * | 2013-03-20 | 2013-06-12 | 镇江华瑞液压机械有限公司 | Dual-energy saving combined hydraulic valve |
CN103727082B (en) * | 2013-12-27 | 2016-08-31 | 三一汽车起重机械有限公司 | Hydraulic system and engineering machinery |
CN105158076A (en) * | 2015-08-19 | 2015-12-16 | 河南科技大学 | Impact type pneumatic bearing device |
DE102018212077A1 (en) * | 2018-07-19 | 2020-01-23 | Deere & Company | Method for operating a hydraulic consumer on an electrically actuated control valve |
CN111577689B (en) * | 2020-06-03 | 2021-03-26 | 江苏科迈液压控制***有限公司 | Flow saturation resisting method for load sensitive proportional multi-way valve |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0010860A1 (en) * | 1978-09-28 | 1980-05-14 | Eaton Corporation | Load sensing control for hydraulic system |
EP0115590A2 (en) * | 1982-12-30 | 1984-08-15 | Robert Bosch Gmbh | Hydraulic control device |
EP0477370A1 (en) * | 1990-01-11 | 1992-04-01 | Hitachi Construction Machinery Co., Ltd. | Valve device and hydraulic driving device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3486334A (en) * | 1968-05-16 | 1969-12-30 | Cessna Aircraft Co | Hydraulic power transmission control |
US4276811A (en) * | 1972-11-08 | 1981-07-07 | Control Concepts, Inc. | Closed center programmed valve system with load sense |
US4401009A (en) * | 1972-11-08 | 1983-08-30 | Control Concepts, Inc. | Closed center programmed valve system with load sense |
US4050596A (en) * | 1975-07-24 | 1977-09-27 | Control Concepts, Inc. | Electrohydraulic valve assembly for front end loader attachment to farm tractor |
US4046399A (en) * | 1975-11-05 | 1977-09-06 | Control Concepts, Inc. | Electrohydraulic system for towed vehicle |
US4023646A (en) * | 1975-11-24 | 1977-05-17 | Allis-Chalmers Corporation | Load sensitive hydraulic system |
US4107924A (en) * | 1977-04-28 | 1978-08-22 | Caterpillar Tractor Co. | Pump upgrading system |
US4589437A (en) * | 1983-07-07 | 1986-05-20 | Zeuner Kenneth W | Reel speed valve assembly |
DE3914904C2 (en) * | 1989-05-05 | 1995-06-29 | Rexroth Mannesmann Gmbh | Regulation for a variable displacement pump that works depending on the load |
-
1992
- 1992-08-03 US US07/923,762 patent/US5245827A/en not_active Expired - Lifetime
-
1993
- 1993-07-09 AT AT93110985T patent/ATE147139T1/en not_active IP Right Cessation
- 1993-07-09 DE DE59304948T patent/DE59304948D1/en not_active Expired - Lifetime
- 1993-07-09 ES ES93110985T patent/ES2095527T3/en not_active Expired - Lifetime
- 1993-07-09 EP EP93110985A patent/EP0582099B1/en not_active Expired - Lifetime
- 1993-07-21 MX MX9304408A patent/MX9304408A/en not_active IP Right Cessation
- 1993-07-23 CA CA002101235A patent/CA2101235C/en not_active Expired - Fee Related
- 1993-07-29 AU AU44310/93A patent/AU659751B2/en not_active Ceased
- 1993-07-30 BR BR9303240A patent/BR9303240A/en not_active IP Right Cessation
- 1993-08-03 JP JP5192467A patent/JPH06159305A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0010860A1 (en) * | 1978-09-28 | 1980-05-14 | Eaton Corporation | Load sensing control for hydraulic system |
EP0115590A2 (en) * | 1982-12-30 | 1984-08-15 | Robert Bosch Gmbh | Hydraulic control device |
EP0477370A1 (en) * | 1990-01-11 | 1992-04-01 | Hitachi Construction Machinery Co., Ltd. | Valve device and hydraulic driving device |
Also Published As
Publication number | Publication date |
---|---|
AU4431093A (en) | 1994-02-10 |
EP0582099A2 (en) | 1994-02-09 |
US5245827A (en) | 1993-09-21 |
JPH06159305A (en) | 1994-06-07 |
CA2101235C (en) | 1995-06-27 |
MX9304408A (en) | 1994-03-31 |
ES2095527T3 (en) | 1997-02-16 |
BR9303240A (en) | 1994-03-15 |
CA2101235A1 (en) | 1994-02-04 |
ATE147139T1 (en) | 1997-01-15 |
AU659751B2 (en) | 1995-05-25 |
DE59304948D1 (en) | 1997-02-13 |
EP0582099B1 (en) | 1997-01-02 |
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