GB1469629A - Apparatus for controlling an adjustable pump - Google Patents

Apparatus for controlling an adjustable pump

Info

Publication number
GB1469629A
GB1469629A GB2015275A GB2015275A GB1469629A GB 1469629 A GB1469629 A GB 1469629A GB 2015275 A GB2015275 A GB 2015275A GB 2015275 A GB2015275 A GB 2015275A GB 1469629 A GB1469629 A GB 1469629A
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
eccentricity
pump
thereoutof
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
Application number
GB2015275A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1469629A publication Critical patent/GB1469629A/en
Expired 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
    • F04B49/08—Regulating by delivery pressure
    • 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
    • F04B49/12—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 by varying the length of stroke of the working members
    • F04B49/123—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 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
    • F04B49/128—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 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the cylinders, e.g. by moving a cylinder block
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

1469629 Fluid-pressure servomotor systems ROBERT BOSCH GmbH 13 May 1975 [17 May 1974] 20152/75 Heading G3P The eccentricity of stator ring 12 of a vane pump pump is varied by pistons 14, 15 controlled by valves 29, 31 which are operated by an electronic control apparatus 34 which compares a "desired eccentricity" signal S with an "actual eccentricity" signal from a sensor 38, movement of the ring 12 in either direction being effected by moving a respective one of the solenoid-operated valves 29, 31 into position I whereby pump discharge pressure 26 is fed to the associated cylinder to urge its piston thereoutof, the other valve being moved either to a slow rate of movement position II in which the associated cylinder is cut-off and blow thereoutof can only take place via a throttle formed by a clearance between the piston and cylinder, or to a fast rate of movement position III in which fluid can be pushed out of the cylinder to a low-pressure reservoir 27. In a modification Figs. 2 and 3, (not shown), one piston is permanently subjected to pump discharge pressure whilst the other is controlled by a valve possessing positions I and II only.
GB2015275A 1974-05-17 1975-05-13 Apparatus for controlling an adjustable pump Expired GB1469629A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2424149A DE2424149A1 (en) 1974-05-17 1974-05-17 CONTROL DEVICE FOR A PUMP

Publications (1)

Publication Number Publication Date
GB1469629A true GB1469629A (en) 1977-04-06

Family

ID=5915891

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2015275A Expired GB1469629A (en) 1974-05-17 1975-05-13 Apparatus for controlling an adjustable pump

Country Status (3)

Country Link
JP (1) JPS50160807A (en)
DE (1) DE2424149A1 (en)
GB (1) GB1469629A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2607780C2 (en) * 1976-02-26 1981-11-19 Robert Bosch Gmbh, 7000 Stuttgart Adjustment device for a radial piston pump
US4285639A (en) * 1979-06-12 1981-08-25 Parker-Hannifin Corporation Electronic control for variable displacement pumps
DE3505133A1 (en) * 1985-02-14 1986-08-14 Lewa Herbert Ott Gmbh + Co, 7250 Leonberg HYDRAULICALLY ACTUATED LIFT ADJUSTMENT
JPH04128432U (en) * 1991-10-17 1992-11-24 沖電気工業株式会社 Power-on reset circuit
DE102015219990A1 (en) * 2015-10-15 2017-04-20 Zf Friedrichshafen Ag Method for operating a pump arrangement with a variable displacement pump
DE102015223414A1 (en) * 2015-11-26 2017-06-01 Robert Bosch Gmbh Variable displacement pump with an adjusting arm having adjusting ring for flow adjustment of the variable

Also Published As

Publication number Publication date
JPS50160807A (en) 1975-12-26
DE2424149A1 (en) 1976-04-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee