EP2479434A3 - Regulation of an external gear pump - Google Patents

Regulation of an external gear pump Download PDF

Info

Publication number
EP2479434A3
EP2479434A3 EP11009016.4A EP11009016A EP2479434A3 EP 2479434 A3 EP2479434 A3 EP 2479434A3 EP 11009016 A EP11009016 A EP 11009016A EP 2479434 A3 EP2479434 A3 EP 2479434A3
Authority
EP
European Patent Office
Prior art keywords
control chamber
gear pump
control
regulation
displacement unit
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.)
Withdrawn
Application number
EP11009016.4A
Other languages
German (de)
French (fr)
Other versions
EP2479434A2 (en
Inventor
Andreas Gitt-Gehrke
Michael Lüer
Björn Kramer
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP2479434A2 publication Critical patent/EP2479434A2/en
Publication of EP2479434A3 publication Critical patent/EP2479434A3/en
Withdrawn legal-status Critical Current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
    • 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
    • F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • 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
    • F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • 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
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F04C2210/206—Oil

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

Die Erfindung betrifft eine Zahnradpumpe mit einer fördermengenverändernden Verschiebeeinheit (20), die zwischen einer ersten Steuerkammer (22) und einer zweiten Steuerkammer(24) verschiebbar angeordnet ist, wobei in der ersten Steuerkammer (22) eine Rückstellfeder (26) derart angeordnet und ausgebildet ist, dass diese eine Kraft in Richtung der zweiten Steuerkammer (24) auf die Verschiebeeinheit (20) ausübt, wobei die Verschiebeeinheit (20) einen ersten Steuerkolben (32), welcher der ersten Steuerkammer (22) zugewandt ist, und einen zweiten Steuerkolben (34), welcher der zweiten Steuerkammer (24) zugewandt ist, aufweist. Hierbei weist der zweite Steuerkolben (34) an seinem Umfang eine über wenigstens einen Teil des Umfangs in Umfangsrichtung verlaufende Ringnut (42) auf, wobei am zweiten Steuerkolben (34) zusätzlich ein fluidleitender Kanal (44) derart angeordnet und ausgebildet ist, dass dieser Kanal (44) die Ringnut (42) fluidleitend mit einer Saugseite (40) der Zahnradpumpe verbindet.

Figure imgaf001
The invention relates to a gear pump with a displacement-changing displacement unit (20) which is slidably disposed between a first control chamber (22) and a second control chamber (24), wherein in the first control chamber (22) a return spring (26) is arranged and formed in that it exerts a force in the direction of the second control chamber (24) on the displacement unit (20), wherein the displacement unit (20) has a first control piston (32) facing the first control chamber (22) and a second control piston (34) ) facing the second control chamber (24). Here, the second control piston (34) at its periphery on at least a portion of the circumference in the circumferential direction extending annular groove (42), wherein on the second control piston (34) additionally a fluid-conducting channel (44) is arranged and formed such that this channel (44) fluidly connects the annular groove (42) with a suction side (40) of the gear pump.
Figure imgaf001
EP11009016.4A 2011-01-22 2011-11-14 Regulation of an external gear pump Withdrawn EP2479434A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011009221A DE102011009221A1 (en) 2011-01-22 2011-01-22 gear pump

Publications (2)

Publication Number Publication Date
EP2479434A2 EP2479434A2 (en) 2012-07-25
EP2479434A3 true EP2479434A3 (en) 2013-05-29

Family

ID=45348974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11009016.4A Withdrawn EP2479434A3 (en) 2011-01-22 2011-11-14 Regulation of an external gear pump

Country Status (2)

Country Link
EP (1) EP2479434A3 (en)
DE (1) DE102011009221A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10113546B2 (en) * 2016-08-16 2018-10-30 Caterpillar Inc. Pump for an engine
DE102019121786A1 (en) * 2019-08-13 2021-02-18 Hochschule Flensburg Turbo machine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029086A1 (en) * 2005-06-23 2007-01-04 Dr.Ing.H.C. F. Porsche Ag Oil pump for an internal combustion engine
DE102008025346A1 (en) * 2008-05-27 2009-12-03 Audi Ag Regulating oil pump for lubricating internal combustion engine, has control piston comprising circular arc shaped axial recess, and bypass nut radially running towards control piston and disconnected in region of continuous edge of recess
EP2412979A2 (en) * 2010-07-26 2012-02-01 Schwäbische Hüttenwerke Automotive GmbH Pressure pump with suction nut

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043842A1 (en) 2000-03-02 2001-09-06 Volkswagen Ag Gear pump with a displacement unit that changes the delivery rate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029086A1 (en) * 2005-06-23 2007-01-04 Dr.Ing.H.C. F. Porsche Ag Oil pump for an internal combustion engine
DE102008025346A1 (en) * 2008-05-27 2009-12-03 Audi Ag Regulating oil pump for lubricating internal combustion engine, has control piston comprising circular arc shaped axial recess, and bypass nut radially running towards control piston and disconnected in region of continuous edge of recess
EP2412979A2 (en) * 2010-07-26 2012-02-01 Schwäbische Hüttenwerke Automotive GmbH Pressure pump with suction nut

Also Published As

Publication number Publication date
DE102011009221A1 (en) 2012-07-26
EP2479434A2 (en) 2012-07-25

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