GB1388002A - Pressure regulator in a variable pump - Google Patents
Pressure regulator in a variable pumpInfo
- Publication number
- GB1388002A GB1388002A GB3834472A GB3834472A GB1388002A GB 1388002 A GB1388002 A GB 1388002A GB 3834472 A GB3834472 A GB 3834472A GB 3834472 A GB3834472 A GB 3834472A GB 1388002 A GB1388002 A GB 1388002A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- chamber
- spring
- spool
- line
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
- F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
-
- 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)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
1388002 Rotary positive-displacement pumps ROBERT BOSCH GmbH 17 Aug 1972 [20 Aug 1971] 38344/72 Heading F1F [Also in Divisions G2 and G3] The eccentricity of a cylinder 14 of a sliding- vane pump is controlled by a pressure compensating system including a first piston 17 subjected at 24 and 26 to pump discharge pressure and a second, larger area piston 18 subjected at 30 to a control pressure established by spool 42 which responds to pump discharge pressure in chamber 20 as opposed by spring 27 and aided by a spring 28 adjusted by piston 17. Chamber 20 may connect with line 30 via a line (31) including a restriction (32) which prevents total pressure loss in the chamber when the spool connects line 30 to drain. In the Fig.4 modification, piston 50 replaces piston 17 and feeds back to the spool via piston 52 and spring 58.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712141722 DE2141722A1 (en) | 1971-08-20 | 1971-08-20 | PRESSURE REGULATOR FOR AN ADJUSTABLE PUMP |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1388002A true GB1388002A (en) | 1975-03-19 |
Family
ID=5817264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3834472A Expired GB1388002A (en) | 1971-08-20 | 1972-08-17 | Pressure regulator in a variable pump |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS4830104A (en) |
DE (1) | DE2141722A1 (en) |
FR (1) | FR2151316A5 (en) |
GB (1) | GB1388002A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4035105A (en) * | 1975-04-16 | 1977-07-12 | G. L. Rexroth Gmbh | Variable-output pump control arrangement |
US4132506A (en) * | 1975-11-14 | 1979-01-02 | G.L. Rexroth G.M.B.H. | Pressure and volume-flow control for variable pump |
US4185540A (en) * | 1977-05-06 | 1980-01-29 | Robert Bosch Gmbh | Positive-displacement machine |
GB2126657A (en) * | 1982-09-04 | 1984-03-28 | Teves Gmbh Alfred | Hydrostatic drive |
US4668171A (en) * | 1983-12-14 | 1987-05-26 | Brueninghaus Hydraulik Gmbh | Torque control device for an adjustable hydropump |
US9133738B2 (en) | 2010-11-24 | 2015-09-15 | Pierburg Pump Technology Gmbh | Variable displacement lubricant pump |
CN110332112A (en) * | 2019-06-13 | 2019-10-15 | 江苏理工学院 | A kind of ratio differential pressure type variable vane pump |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2505780C2 (en) * | 1975-02-12 | 1986-03-06 | Robert Bosch Gmbh, 7000 Stuttgart | Device for regulating at least one adjustable pump |
JPH022949Y2 (en) * | 1980-07-07 | 1990-01-24 | ||
DE3034115C2 (en) * | 1980-09-11 | 1987-05-07 | Mannesmann Rexroth GmbH, 8770 Lohr | Power controller |
DE3232695C2 (en) * | 1982-09-02 | 1984-08-16 | Hydromatik GmbH, 7915 Elchingen | Capacity control device for a hydraulic pump |
DE3347015A1 (en) * | 1983-12-24 | 1985-07-04 | Alfred Teves Gmbh, 6000 Frankfurt | PRESSURE CONTROL DEVICE FOR A HYDRAULIC PUMP, IN PARTICULAR A LEAF CELL PUMP |
DE3501660A1 (en) * | 1985-01-19 | 1986-07-24 | Alfred Teves Gmbh, 6000 Frankfurt | Hydraulic system |
JPS6231761A (en) * | 1985-08-02 | 1987-02-10 | Toyota Central Res & Dev Lab Inc | Speed ratio controller for continuously variable transmission |
US4999020A (en) * | 1989-11-30 | 1991-03-12 | Lucas Aerospace Power Transmission Corp. | Variable displacement high pressure pump with internal power limiting arrangement |
DE102007039589A1 (en) * | 2007-08-22 | 2009-02-26 | Voigt, Dieter, Dipl.-Ing. | Regular oil pump with adjustment-dependent oil pressure control |
DE102018212042A1 (en) * | 2018-07-19 | 2020-01-23 | Robert Bosch Gmbh | Hydraulic machine with regulated displacement |
-
1971
- 1971-08-20 DE DE19712141722 patent/DE2141722A1/en active Pending
-
1972
- 1972-08-17 GB GB3834472A patent/GB1388002A/en not_active Expired
- 1972-08-18 JP JP8269072A patent/JPS4830104A/ja active Pending
- 1972-08-18 FR FR7229683A patent/FR2151316A5/fr not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4035105A (en) * | 1975-04-16 | 1977-07-12 | G. L. Rexroth Gmbh | Variable-output pump control arrangement |
US4132506A (en) * | 1975-11-14 | 1979-01-02 | G.L. Rexroth G.M.B.H. | Pressure and volume-flow control for variable pump |
US4185540A (en) * | 1977-05-06 | 1980-01-29 | Robert Bosch Gmbh | Positive-displacement machine |
GB2126657A (en) * | 1982-09-04 | 1984-03-28 | Teves Gmbh Alfred | Hydrostatic drive |
US4668171A (en) * | 1983-12-14 | 1987-05-26 | Brueninghaus Hydraulik Gmbh | Torque control device for an adjustable hydropump |
US9133738B2 (en) | 2010-11-24 | 2015-09-15 | Pierburg Pump Technology Gmbh | Variable displacement lubricant pump |
CN110332112A (en) * | 2019-06-13 | 2019-10-15 | 江苏理工学院 | A kind of ratio differential pressure type variable vane pump |
Also Published As
Publication number | Publication date |
---|---|
JPS4830104A (en) | 1973-04-20 |
DE2141722A1 (en) | 1973-03-01 |
FR2151316A5 (en) | 1973-04-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |