WO2012103925A1 - Pompe à denture intérieure double - Google Patents

Pompe à denture intérieure double Download PDF

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Publication number
WO2012103925A1
WO2012103925A1 PCT/EP2011/051316 EP2011051316W WO2012103925A1 WO 2012103925 A1 WO2012103925 A1 WO 2012103925A1 EP 2011051316 W EP2011051316 W EP 2011051316W WO 2012103925 A1 WO2012103925 A1 WO 2012103925A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
internal gear
pumps
housing
hydraulic
Prior art date
Application number
PCT/EP2011/051316
Other languages
German (de)
English (en)
Inventor
Rene Schepp
Norbert Alaze
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
Priority to EP11703168.2A priority Critical patent/EP2670639A1/fr
Priority to US13/982,927 priority patent/US20130309120A1/en
Priority to PCT/EP2011/051316 priority patent/WO2012103925A1/fr
Priority to CN2011800663288A priority patent/CN103338989A/zh
Publication of WO2012103925A1 publication Critical patent/WO2012103925A1/fr

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • B60T8/4031—Pump units characterised by their construction or mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • 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
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • 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
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • 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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/101—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with a crescent-shaped filler element, located between the inner and outer intermeshing members
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F04C2240/51—Bearings for cantilever assemblies

Definitions

  • the invention relates to a double internal gear pump with two mecanical- wheel pumps with the features of the preamble of claim 1.
  • Internal gear pump is designed for a slip-controlled (ABS, ASR, ESP, FDR) hydraulic vehicle brake system, with each of the two internal gear pumps being designed for one brake circuit.
  • ABS slip-controlled
  • ESP ESP
  • FDR FDR
  • Such pumps in slip-controlled hydraulic vehicle brake systems are also referred to as return pumps, whereby piston pumps and not gear pumps are to be considered as usual.
  • Such a double internal gear pump is known from the published patent application DE 10 2007 054 808 A1. It has two internal gear pumps with a common pump shaft for common drive with an electric motor. Pinion of the two internal gear pumps are arranged coaxially with axial distance next to each other in a rotationally fixed manner on the pump shaft, wherein pinions are the gears arranged on the pump shaft. Ring gears (internal gear teeth) of the two internal gear pumps are arranged eccentrically to the pinions and the pump shaft and mesh at a peripheral point or in a peripheral region with the pinions.
  • the known double internal gear pump has a multi-part pump housing with two cup-shaped, cylindrical housing halves, which are axially plugged together. Each half of the housing houses one of the two internal gear pumps.
  • a partition wall is arranged in the pump housing, which separates the two internal gear pumps spatially by their thickness and hydraulically.
  • the partition wall can be considered as part of the pump housing. Open sides of the pot-shaped housing halves face each other, "bottoms" of the housing halves form end walls of the pump housing and close off the pump housing on end faces to the outside. or end walls have center holes, in which the pump shaft is rotatably mounted.
  • This double-internal gear pump has a multi-part pump housing with two topfformigen housing halves in which the two internal gear pumps are added. Open end faces of the cup-shaped housing halves facing each other, between them a partition wall is arranged, abut against the end faces of the housing half. To connect the housing halves encompass a circumference of the partition with a rotating Börtel.
  • the double internal gear pump with its pump housing is used as a pump insert in a hydraulic block of a hydraulic vehicle brake system hydraulically interconnects the double internal gear pump as hydraulic or return pumps with other hydraulic components of a slip control of the vehicle brake system.
  • Components include, for example, solenoid valves, check valves, hydraulic accumulators and dampers.
  • the hydraulic block is connected to a master cylinder and wheel brake cylinders are connected to the hydraulic block.
  • the partition is an integral part of the pump housing.
  • the pump housing is preferably open at both ends or closed with removable housing covers or other components, so that the internal gear pumps can be installed from the front sides into the housing.
  • An advantage of the invention is that a seal between the partition and the pump housing is eliminated, there are no Dichtig- keitsprobleme at this point and can not tilt the partition during assembly in the pump housing, because the partition is not mounted but is an integral part of the pump housing , Any guidance of pump connections, ie pump inlets and outlets through the dividing wall is simplified, there are no sealed transitions of the pump connections from the pump housing into the dividing wall and it is precluded that a faulty assembly of the bulkhead, do not communicate the pump ports in the pump housing with the associated pump ports in the bulkhead.
  • the double-internal gear pump is arranged in a hydraulic block of a hydraulic, slip-controlled vehicle brake system, which forms the pump housing (claim 2).
  • the hydraulic block connects the double internal gear pump hydraulically with other hydraulic components of the slip control of the vehicle brake system such as solenoid valves, check valves, hydraulic accumulators, hydraulic dampers, pressure sensors.
  • the hydraulic block is connected to a master cylinder and to the hydraulic block wheel brakes of the vehicle brake system are connected.
  • the two internal gear pumps of the double internal gear pump are hydraulically separated from each other and each of the two internal gear pumps is assigned to a brake circuit of the vehicle brake system.
  • the internal gear pumps are hydraulic pumps and are referred to as slip-back pumps in slip-controlled vehicle brake systems.
  • Claim 3 provides that the two internal gear pumps of the double internal gear pump according to the invention are sickle pumps whose sickles have a common abutment which penetrates the partition.
  • the abutment may for example be a pin which penetrates the partition and on which the sickles are pivotally mounted.
  • the sickles are bodies or generally components that are arranged in a pump chamber of the internal gear pumps, which extends between a ring gear and a pinion of the internal gear pumps in the circumferential direction from a pump inlet to a pump outlet.
  • the body Due to its shape, the body is commonly referred to as a sickle.
  • the sickle is sickle-shaped.
  • any pump valves can be inserted from the respective end face of the pump housing into the respective pump connection in the partition wall before the internal gear pump enters the partition Pump housing is installed.
  • a pump valve may for example be a check valve, which prevents any backflow of brake fluid through the internal gear pumps counter to the conveying direction at standstill of the internal gear pumps.
  • Such pump valves can be accommodated in a space-saving manner in the partition wall of the pump housing.
  • Claim 5 provides that a shaft bearing of the pump shaft at the same time also forms an engine mount of a drive motor of the double êt leopard- wheel pump according to the invention.
  • the drive motor is in particular an electric motor.
  • the drive motor and the double internal gear pump may have a common shaft, which in this case forms both the pump shaft and the motor shaft. It is also possible that the drive motor has its own motor shaft.
  • FIG. 3 shows an angled axial section of a pump housing of
  • the double internal gear pump 1 according to the invention shown in FIG. 1 has two internal gear pumps 2, 2 ', which are arranged coaxially and at an axial distance from one another on a common pump shaft 3.
  • the internal gear pumps 2, 2 ' have pinions 4, 4' which are non-rotatably mounted on the pump shaft 3 and which mesh with a ring gear 5, 5 'at one point or on a region of its circumference.
  • one of the internal gear 2 is drawn in front view without a pump housing 6.
  • the pump housing 6 has two cylindrical countersinks 7, 7 ', in which the two internal gear pumps 2, 2' are received and their hollow wheels 5, 5 'are rotatable.
  • the pump housing 6 is integral and has a partition 8, which is an integral part of the pump housing 6.
  • the partition 8 is located between the two internal gear pumps 2, 2 'and separates them spatially from each other.
  • the partition wall 8 has a through hole 9 through which the pump shaft 3 is passed.
  • the pump shaft 3 is rotatably mounted with a bearing bush 10 in the partition 8.
  • a sealing ring 1 1 seals between the partition wall 8 and the pump shaft 3, so that the two internal gear pumps 2, 2 'are hydraulically separated from each other.
  • a sickle 13, 13' are arranged on the outside of tooth heads of teeth of the ring gear 5 and on the inside tooth tips of teeth of the pinion 4 rest or slide along during operation.
  • the sickle 13, 13 ' is present in both internal gear pumps 2, 2'. It closes volumes between the teeth of the
  • the pin 16 is arranged axially parallel to the pump shaft 3 and passes through a bore through the partition 8 by.
  • a sealing ring 17 seals the pin 16 in the partition wall 8 of the pump housing 6.
  • the two countersinks 7, 7 'of the pump housing 6, in which the internal gear pumps 2, 2' are arranged, are closed with housing covers 18, 18 ', which are pressed in the illustrated embodiment, which, however, is not mandatory for the invention.
  • the pump shaft 3 passes through one of the two housing covers 18, at the same time forming a motor shaft of an electric drive motor (not shown).
  • the pump shaft 3 with a shaft bearing 19, in the illustrated embodiment of the invention, a ball bearing rotatably mounted.
  • the shaft bearing 19 protrudes by about one half of its width from the housing cover 18, so that the electric drive motor, not shown, can be placed and on the
  • FIG. 3 shows an angled axial section of the pump housing 6 without the internal gear pumps 2, 2 ', wherein the sectional planes are selected such that they pass through the pump inlet 14 and the pump outlet 15 of the one internal gear pump 2.
  • the pump inlet 14 and the pump outlet 15 are designed as angled holes that come radially from the outside or go outward and after a settlement by 90 degrees axially parallel in the
  • Countersink 7 of the pump housing 6 open, in which the internal gear pump 2 is arranged.
  • the pump inlet and the pump outlet of the other internal gear pump 2 ' is offset in the circumferential direction by slightly more than the diameter of the axially parallel part of the pump inlet 14 and the pump outlet 15, so that the pump inlets 14 and pump outlets 15 of the two
  • Pump valves are the internal gear pump 2, 2 'associated valves of any type that control, for example, a flow direction through the internal gear pumps. There are also pressure limiting or other valves as pump valves possible.
  • a check valve 18 is used as a pump valve in the pump outlet 15. The check valve 18 is inserted before the installation of the internal gear pump 2, 2 'in the bore in the partition 8 of the pump housing 6, which forms the pump outlet 15. Similarly, a valve can be inserted into the pump inlet 14, even if it is not provided in the embodiment.
  • the pump housing 6 is formed by a hydraulic block of a hydraulic vehicle brake system, not shown otherwise.
  • the two internal gear pumps 2, 2 ' are further hydraulic components, not shown, such as solenoid valves, hydraulic accumulator, hydraulic damper, check valves, pressure sensors used in the hydraulic block and interconnected hydraulically through holes.
  • the internal gear pumps 2, 2 ' form hydraulic pumps of a slip control of the hydraulic vehicle brake system, not shown.
  • Such hydraulic pumps are also referred to as return pumps.
  • return pumps For slip control the abbreviations ABS, ASR, ESP and / or FDR are common.
  • the hydraulic block is connected to a master brake cylinder and to the hydraulic block are wheel brake cylinders of the hydraulic vehicle brake system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

L'invention concerne une pompe à denture intérieure double (1) comportant deux pompes à denture intérieure (2, 2') conçues comme pompes hydrauliques d'un système de freinage automobile hydraulique à glissement contrôlé. Selon l'invention, une paroi de séparation (8) située entre les deux pompes à denture intérieure (2, 2') est conçue comme composant monopièce d'un carter de pompe (6) de préférence formé par un bloc hydraulique du système de freinage automobile.
PCT/EP2011/051316 2011-01-31 2011-01-31 Pompe à denture intérieure double WO2012103925A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11703168.2A EP2670639A1 (fr) 2011-01-31 2011-01-31 Pompe à denture intérieure double
US13/982,927 US20130309120A1 (en) 2011-01-31 2011-01-31 Double internal gear wheel pump
PCT/EP2011/051316 WO2012103925A1 (fr) 2011-01-31 2011-01-31 Pompe à denture intérieure double
CN2011800663288A CN103338989A (zh) 2011-01-31 2011-01-31 双内齿轮泵

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2011/051316 WO2012103925A1 (fr) 2011-01-31 2011-01-31 Pompe à denture intérieure double

Publications (1)

Publication Number Publication Date
WO2012103925A1 true WO2012103925A1 (fr) 2012-08-09

Family

ID=44625124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/051316 WO2012103925A1 (fr) 2011-01-31 2011-01-31 Pompe à denture intérieure double

Country Status (4)

Country Link
US (1) US20130309120A1 (fr)
EP (1) EP2670639A1 (fr)
CN (1) CN103338989A (fr)
WO (1) WO2012103925A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140377114A1 (en) * 2013-06-20 2014-12-25 Robert Bosch Gmbh Internal Gear Pump
WO2021005155A1 (fr) 2019-07-10 2021-01-14 Ipgate Ag Pompe à engrenages
DE102019118723A1 (de) * 2019-07-10 2021-01-14 Ipgate Ag Druckversorgungseinheit für ein Hydrauliksystem mit mindestens einem Verbraucherkreis und mit mindestens einer Rotationspumpe
DE102019118708A1 (de) * 2019-07-10 2021-01-14 Ipgate Ag Druckversorgungseinrichtung mit einer Zahnradpumpe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103758752B (zh) * 2014-01-27 2016-02-17 浙江理工大学 一种巴斯噶非圆齿轮驱动的八叶片差速泵
CN104196719A (zh) * 2014-08-29 2014-12-10 西北工业大学 一种多级内啮合航空燃油齿轮泵
CN107725360A (zh) * 2017-10-21 2018-02-23 王友宏 一种齿轮泵的防松齿轮结构及齿轮泵

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US2412588A (en) * 1943-05-31 1946-12-17 Pesco Products Co Gear divider with pressure loaded bushings
DE10053991A1 (de) 2000-10-31 2002-05-08 Continental Teves Ag & Co Ohg Pumpeneinschub und hydraulische Einheit einer Fahrzeugbremsanlage
US20020053829A1 (en) * 1998-04-22 2002-05-09 Denso Corporation Pump equipment and method for assembling same
DE102007022215A1 (de) * 2007-05-11 2008-11-13 Robert Bosch Gmbh Pumpenbaugruppe zur synchronen Druckbeaufschlagung von zwei Fluidsäulen
DE102007054808A1 (de) 2007-11-16 2009-05-20 Robert Bosch Gmbh Pumpenbaugruppe zur synchronen Druckbeaufschlagung von zwei Fluidkreisen
DE102008054753A1 (de) * 2008-12-16 2010-06-17 Robert Bosch Gmbh Innenzahnradpumpe

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JP3915241B2 (ja) * 1998-04-22 2007-05-16 株式会社デンソー 複数の回転式ポンプを備えたポンプ装置及びその組付け方法
US6612822B2 (en) * 2001-07-09 2003-09-02 Valeo Electrical Systems, Inc. Hydraulic motor system
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US7769519B2 (en) * 2006-12-18 2010-08-03 Advics Co., Ltd. Motion control device for vehicle
JP2009215932A (ja) * 2008-03-10 2009-09-24 Hitachi Ltd タンデムポンプおよびブレーキ装置用タンデムポンプ
JP4842341B2 (ja) * 2009-03-23 2011-12-21 日立オートモティブシステムズ株式会社 ギヤポンプ及びブレーキ装置用ギヤポンプ
JP4931952B2 (ja) * 2009-03-24 2012-05-16 日立オートモティブシステムズ株式会社 ギヤポンプ
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2412588A (en) * 1943-05-31 1946-12-17 Pesco Products Co Gear divider with pressure loaded bushings
US20020053829A1 (en) * 1998-04-22 2002-05-09 Denso Corporation Pump equipment and method for assembling same
DE10053991A1 (de) 2000-10-31 2002-05-08 Continental Teves Ag & Co Ohg Pumpeneinschub und hydraulische Einheit einer Fahrzeugbremsanlage
DE102007022215A1 (de) * 2007-05-11 2008-11-13 Robert Bosch Gmbh Pumpenbaugruppe zur synchronen Druckbeaufschlagung von zwei Fluidsäulen
DE102007054808A1 (de) 2007-11-16 2009-05-20 Robert Bosch Gmbh Pumpenbaugruppe zur synchronen Druckbeaufschlagung von zwei Fluidkreisen
DE102008054753A1 (de) * 2008-12-16 2010-06-17 Robert Bosch Gmbh Innenzahnradpumpe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140377114A1 (en) * 2013-06-20 2014-12-25 Robert Bosch Gmbh Internal Gear Pump
JP2015004361A (ja) * 2013-06-20 2015-01-08 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング インターナルギヤポンプ
US9506467B2 (en) * 2013-06-20 2016-11-29 Robert Bosch Gmbh Internal gear pump
WO2021005155A1 (fr) 2019-07-10 2021-01-14 Ipgate Ag Pompe à engrenages
DE102019118697A1 (de) * 2019-07-10 2021-01-14 Ipgate Ag Zahnradpumpe
DE102019118723A1 (de) * 2019-07-10 2021-01-14 Ipgate Ag Druckversorgungseinheit für ein Hydrauliksystem mit mindestens einem Verbraucherkreis und mit mindestens einer Rotationspumpe
DE102019118708A1 (de) * 2019-07-10 2021-01-14 Ipgate Ag Druckversorgungseinrichtung mit einer Zahnradpumpe
WO2021005151A1 (fr) 2019-07-10 2021-01-14 Ipgate Ag Dispositif d'alimentation en pression comprenant une pompe à engrenages
WO2021005154A1 (fr) 2019-07-10 2021-01-14 Ipgate Ag Unité d'alimentation en pression pour un système hydraulique comprenant au moins un circuit consommateur et comprenant au moins une pompe rotative

Also Published As

Publication number Publication date
CN103338989A (zh) 2013-10-02
US20130309120A1 (en) 2013-11-21
EP2670639A1 (fr) 2013-12-11

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