GB1433146A - Control mechanism for a variable discharge pump - Google Patents

Control mechanism for a variable discharge pump

Info

Publication number
GB1433146A
GB1433146A GB2639173A GB2639173A GB1433146A GB 1433146 A GB1433146 A GB 1433146A GB 2639173 A GB2639173 A GB 2639173A GB 2639173 A GB2639173 A GB 2639173A GB 1433146 A GB1433146 A GB 1433146A
Authority
GB
United Kingdom
Prior art keywords
lever
piston
chamber
clockwise
move
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
GB2639173A
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 GB1433146A publication Critical patent/GB1433146A/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
    • F04B49/12—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)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Servomotors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

1433146 Rotary positive-displacement machines ROBERT BOSCH GmbH 1 June 1973 [22 June 1972] 26391/73 Heading F1F A control mechanism for a variable-discharge pump 11 of the vane-type wherein an adjustable stator in the form of a ring 14 is movable by pistons 17, 18 operated by a control valve 24, comprises a rigid transmission lever 38 pivotally connected to piston 17 and valve member 26 and a bell crank lever 44 having one arm which is forked at 45 to co-operate with a pin 42 on lever 38, the other arm having a rounded part 46 acted upon by spring- loaded tappets 47, 48, the lever 44 being rigidly mounted on a shaft 43 to which is also rigidly connected an operating lever 50. The discharge line 32 of the pump communicates with a line 28 connecting an annular recess 27 of valve chamber 25 with the chamber 21 of piston 18. The chamber 20 is connected by line 23 to chamber 25 and a further annular recess 29 of chamber 25 is connected to reservoir 31. In use, if lever 50 is moved anti-clockwise about shaft 43 then, since the fulcrum A of lever 38 is its pivotal connection 39 to rod 40, the lever 38 will move clockwise and thus move valve member 26 to the right. This causes the discharge pressure in line 28 to be connected to chamber 20 and since the effective area of piston 17 is greater than that of piston 18, the ring 14 will move to the right to alter the discharge of the pump. This movement of piston 17 will tend to move lever 38 in an anti-clockwise direction about a fulcrum C provided by pin 42, thus restoring the valve member to its initial position. The spring tappet 47 which was initially com- pressed by the anti-clockwise movement of arm 44 now acts on arm 44 to move clockwise back to its original position thus moving lever 38 about fulcrum B, the piston 17 being correspondingly moved back so that the ring 14 is returned to its former location. Movement of lever 50 clockwise from the neutral position moves valve member 26 leftwards to connect chamber 20 to reservoir 31 so that piston 18 moves ring 14 to the left. In this case tappet 48 is compressed and performs the restoring function. Further embodiments are described Figs. 5 to 10 (not shown).
GB2639173A 1972-06-22 1973-06-01 Control mechanism for a variable discharge pump Expired GB1433146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2230519A DE2230519A1 (en) 1972-06-22 1972-06-22 CONTROL DEVICE FOR AN ADJUSTABLE PUMP

Publications (1)

Publication Number Publication Date
GB1433146A true GB1433146A (en) 1976-04-22

Family

ID=5848468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2639173A Expired GB1433146A (en) 1972-06-22 1973-06-01 Control mechanism for a variable discharge pump

Country Status (5)

Country Link
JP (1) JPS4951602A (en)
CH (1) CH562962A5 (en)
DE (1) DE2230519A1 (en)
FR (1) FR2190175A5 (en)
GB (1) GB1433146A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126657A (en) * 1982-09-04 1984-03-28 Teves Gmbh Alfred Hydrostatic drive
EP4039975A3 (en) * 2016-12-22 2022-12-21 Danfoss Power Solutions GmbH & Co. OHG Manual displacement control arrangement for an axial piston pump

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS548299B2 (en) * 1974-06-12 1979-04-14
US3982470A (en) * 1975-08-04 1976-09-28 Abex Corporation Control system for axial piston fluid energy translating device
JPS5716470A (en) * 1980-07-03 1982-01-27 Nec Corp Detecting mechanism for remaining quantity of tonor in magnet dry developer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126657A (en) * 1982-09-04 1984-03-28 Teves Gmbh Alfred Hydrostatic drive
EP4039975A3 (en) * 2016-12-22 2022-12-21 Danfoss Power Solutions GmbH & Co. OHG Manual displacement control arrangement for an axial piston pump

Also Published As

Publication number Publication date
CH562962A5 (en) 1975-06-13
DE2230519A1 (en) 1974-01-10
FR2190175A5 (en) 1974-01-25
JPS4951602A (en) 1974-05-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees