BE803530A - Systeme d'alimentation en fluide a debit variable en dependance de deux gammes de pressions - Google Patents
Systeme d'alimentation en fluide a debit variable en dependance de deux gammes de pressionsInfo
- Publication number
- BE803530A BE803530A BE134508A BE134508A BE803530A BE 803530 A BE803530 A BE 803530A BE 134508 A BE134508 A BE 134508A BE 134508 A BE134508 A BE 134508A BE 803530 A BE803530 A BE 803530A
- Authority
- BE
- Belgium
- Prior art keywords
- supply system
- fluid supply
- variable flow
- pressure ranges
- flow fluid
- Prior art date
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
- 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
- F04B49/002—Hydraulic systems to change the pump delivery
-
- 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
-
- 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
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
- F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
-
- 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
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
-
- 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
- F15B2211/25—Pressure control functions
-
- 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
- F15B2211/3051—Cross-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
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control 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
- F15B2211/31—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
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief 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
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
- F15B2211/60—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
- F15B2211/6052—Load sensing circuits having valve means between output member and the load sensing circuit using 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
- F15B2211/60—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
- F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6058—Load sensing circuits with isolator 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
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7053—Double-acting output members
- F15B2211/7054—Having equal piston areas
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Reciprocating Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US28385572A | 1972-08-25 | 1972-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE803530A true BE803530A (fr) | 1974-02-13 |
Family
ID=23087856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE134508A BE803530A (fr) | 1972-08-25 | 1973-08-13 | Systeme d'alimentation en fluide a debit variable en dependance de deux gammes de pressions |
Country Status (8)
Country | Link |
---|---|
US (1) | US3797245A (fr) |
JP (1) | JPS5744843B2 (fr) |
BE (1) | BE803530A (fr) |
BR (1) | BR7306371D0 (fr) |
CA (1) | CA977243A (fr) |
DE (1) | DE2343611C2 (fr) |
FR (1) | FR2198553A5 (fr) |
GB (1) | GB1434561A (fr) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1521475A (en) * | 1974-11-18 | 1978-08-16 | Massey Ferguson Services Nv | Control systems for variable capacity hydraulic machines |
JPS5922074B2 (ja) * | 1975-12-20 | 1984-05-24 | カブシキガイシヤ エバラセイサクシヨ | 可変容量形油圧ポンプおよび該油圧ポンプを用いた油圧装置 |
US4034564A (en) * | 1976-01-23 | 1977-07-12 | Caterpillar Tractor Co. | Piston pump assembly having load responsive controls |
US3999892A (en) * | 1976-02-09 | 1976-12-28 | Caterpillar Tractor Co. | Interconnected pump control means of a plurality of pumps |
CA1104033A (fr) * | 1977-02-24 | 1981-06-30 | Commercial Shearing, Inc. | Dispositif de commande a compensation de pression et de debit, a couple constant et element de detection de viscosite |
US4124333A (en) * | 1977-10-12 | 1978-11-07 | Caterpillar Tractor Co. | Externally adjustable load plus pump control assembly |
JPS601273Y2 (ja) * | 1978-06-26 | 1985-01-14 | 株式会社小松製作所 | 液圧ポンプの容量制御装置 |
US4244678A (en) * | 1978-06-26 | 1981-01-13 | Kabushiki Kaisha Komatsu Seisakusho | Displacement control system for variable displacement pump |
EP0060247A4 (fr) * | 1980-09-12 | 1984-04-27 | Caterpillar Tractor Co | Moyen de decharge pour soupape a compensation de la pression du flux. |
US4381647A (en) * | 1980-09-12 | 1983-05-03 | Caterpillar Tractor Co. | Load-plus valve for variable displacement pumps |
US4355510A (en) * | 1980-09-12 | 1982-10-26 | Caterpillar Tractor Co. | Unloading means for flow-pressure compensated valve |
WO1982001045A1 (fr) * | 1980-09-12 | 1982-04-01 | Ruseff W | Vanne de surcharge amelioree pour pompes a deplacement variable |
WO1983002132A1 (fr) * | 1981-12-17 | 1983-06-23 | Bianchetta, Donald, L. | Commande pour un ventilateur entraine par un fluide |
US4501539A (en) * | 1983-12-02 | 1985-02-26 | Dravo Corporation | Apparatus for removing the liquid phase from a slurry of fine granular material |
US5197864A (en) * | 1992-01-16 | 1993-03-30 | Caterpillar Inc. | On-off pressure cutoff control for a variable displacement hydraulic pump |
US6802457B1 (en) * | 1998-09-21 | 2004-10-12 | Caterpillar Inc | Coatings for use in fuel system components |
US6094911A (en) * | 1998-12-18 | 2000-08-01 | Caterpillar Inc. | Load sensing hydraulic system with high pressure cut-off bypass |
US6715693B1 (en) * | 2000-02-15 | 2004-04-06 | Caterpillar Inc | Thin film coating for fuel injector components |
US6468046B1 (en) | 2000-09-18 | 2002-10-22 | Caterpillar Inc | Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump |
US6374722B1 (en) | 2000-10-26 | 2002-04-23 | Caterpillar Inc. | Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump |
US7007466B2 (en) * | 2001-12-21 | 2006-03-07 | Caterpillar Inc. | System and method for controlling hydraulic flow |
US6848254B2 (en) | 2003-06-30 | 2005-02-01 | Caterpillar Inc. | Method and apparatus for controlling a hydraulic motor |
JP5319556B2 (ja) * | 2007-03-05 | 2013-10-16 | ゾディアック シーツ ユーケー リミテッド | 制御弁を備える油圧アクチュエータ |
US8079824B2 (en) * | 2008-11-04 | 2011-12-20 | Wen San Chou | Air compressing assembly |
DE102010048068B4 (de) | 2010-04-16 | 2022-11-10 | Robert Bosch Gmbh | Ventilanordnung |
CA3048828C (fr) | 2012-02-01 | 2021-08-10 | Yourbrook Energy Systems Ltd. | Systeme d'energie hydroelectrique et pompe associee |
WO2015026850A1 (fr) | 2013-08-19 | 2015-02-26 | Purdue Research Foundation | Pompe à haute pression miniature et système d'actionnement hydraulique électrique |
CN105317671B (zh) * | 2014-05-30 | 2017-09-29 | 佛山市科达液压机械有限公司 | A4vso泵hd阀用新型阀芯组结构 |
DE102021205359A1 (de) * | 2021-05-26 | 2022-12-01 | Danfoss Power Solutions Gmbh & Co. Ohg | Neutraleinstellvorrichtung für eine einstellbare Hydraulikeinheit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2512799A (en) * | 1947-06-13 | 1950-06-27 | New York Air Brake Co | Hydraulic control system responsive to pressure and flow rate |
GB992322A (en) * | 1962-01-26 | 1965-05-19 | Thomas Edward Beacham | Improvements in hydraulic pumps |
US3252426A (en) * | 1962-08-10 | 1966-05-24 | New York Air Brake Co | Hydraulic device |
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 |
-
1972
- 1972-08-25 US US00283855A patent/US3797245A/en not_active Expired - Lifetime
-
1973
- 1973-07-10 CA CA176,091A patent/CA977243A/en not_active Expired
- 1973-08-13 BE BE134508A patent/BE803530A/fr not_active IP Right Cessation
- 1973-08-17 BR BR6371/73A patent/BR7306371D0/pt unknown
- 1973-08-21 GB GB3964373A patent/GB1434561A/en not_active Expired
- 1973-08-24 JP JP48094506A patent/JPS5744843B2/ja not_active Expired
- 1973-08-24 FR FR7330760A patent/FR2198553A5/fr not_active Expired
- 1973-08-25 DE DE2343611A patent/DE2343611C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2198553A5 (fr) | 1974-03-29 |
JPS4985473A (fr) | 1974-08-16 |
US3797245A (en) | 1974-03-19 |
DE2343611C2 (de) | 1984-09-13 |
CA977243A (en) | 1975-11-04 |
BR7306371D0 (pt) | 1974-06-27 |
GB1434561A (en) | 1976-05-05 |
DE2343611A1 (de) | 1974-02-28 |
JPS5744843B2 (fr) | 1982-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Patent lapsed |
Owner name: CATERPILLAR INC. Effective date: 19880831 |