EP2655887A2 - Disque axial et pompe à engrenages comportant un disque axial - Google Patents

Disque axial et pompe à engrenages comportant un disque axial

Info

Publication number
EP2655887A2
EP2655887A2 EP11788530.1A EP11788530A EP2655887A2 EP 2655887 A2 EP2655887 A2 EP 2655887A2 EP 11788530 A EP11788530 A EP 11788530A EP 2655887 A2 EP2655887 A2 EP 2655887A2
Authority
EP
European Patent Office
Prior art keywords
gear pump
axial disc
axial
gears
pump
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Withdrawn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
EP11788530.1A
Other languages
German (de)
English (en)
Inventor
Oliver Gaertner
Rene Schepp
Andreas Klein
Benjamin Scheibitz
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 EP2655887A2 publication Critical patent/EP2655887A2/fr
Withdrawn legal-status Critical Current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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/005—Axial sealings for working fluid
    • F04C27/006—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type pumps, e.g. gear pumps
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/10—Rotary-piston machines or engines 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
    • F01C1/102—Rotary-piston machines or engines 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 intermeshing elements
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • 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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/92—Surface treatment

Definitions

  • Axial disk and gear pump with axial disk The invention relates to an axial disk for a gear pump with the features of the preamble of claim 1, in particular for an internal gear pump, and a gear pump with such axial disk having the features of the preamble of claim 9.
  • Internal gear pumps have an externally toothed gear, which will be referred to below as the unique designation as a pinion, and an internally toothed, so-called.
  • Ring gear wherein the pinion is arranged eccentrically in the ring gear, that the two gears, so the pinion and the ring gear, in a Peripheral section would come together.
  • the free space is also referred to as a pump room or displacement space.
  • the pinion is rotatably on a pump shaft, which is driven in rotation and rotatably drives the ring gear on the pinion, liquid is conveyed from a suction to a direction of rotation of the gears behind the pressure range of the pump chamber.
  • the suction area opens a pump inlet, from the pressure range goes from a pump outlet.
  • the pressure fields can be formed in the outer sides of the axial disks and / or in the inner sides of the inner gear pump facing them.
  • the axial discs are held against rotation.
  • the pressure of the conveyed liquid pushes the axial discs against the end faces of the gears of the internal gear pump to seal the pump chamber. No hermetic sealing is achieved, but a good compromise between low leakage, good lubrication and low friction between the rotating gears and the fixed axial discs and low wear.
  • a lubrication between the end faces of the gears of the internal gear pump and the adjacent them and externally pressurized Axialusionn done in the manner of a hydrodynamic lubrication by adhering to the front sides of the gears fluid, which is supported by the gears between the Axialusionn and the end faces of the gears.
  • the axial disc according to the invention with the features of claim 1 has on its inner surface a surface structure which, in cooperation with the rotating during operation of the gear pump gears ensures that liquid, which promotes the gear pump, between the end faces of the gears and the adjacent them axial disc arrives.
  • the inside of the axial disc is the side facing the gears of the gear pump side, which rests on the end faces of the gears.
  • Claim 2 provides at least one and preferably a plurality of grooves as a surface structure on the inside of the axial disc.
  • the at least one groove extends in the circumferential direction and additionally has a component in the radial direction, so that rotation of the gears of the gear pump promotes liquid through the groove, which directs the liquid outwards or inwards, so that the liquid between the gears and the axial disc passes and wets the faces of the gears substantially to their entire radial height.
  • Claim 3 provides that the at least one groove leads from the pump space of the gear pump between the axial disc and a gear of the gear pump.
  • at least one second groove leads from the pump space between the axial disc and the other gear of the gear pump.
  • An embodiment of the invention provides a rough surface on the inside of the axial disc.
  • the rough surface may be made by laser processing, erosion, honing, grinding, blasting, for example (shot blasting), cold blasting or the like surface finishing method.
  • shots blasting for example
  • cold blasting cold blasting or the like surface finishing method.
  • a rough surface is a surface coating, for example a metal coating deposited chemically on the inside of the axial disk, which receives its rough, for example spherical, surface structure by means of a special current profile.
  • Another possibility is a so-called DLC (diamond-like coating) coating, ie a coating with an amorphous carbon which has good dry lubricating properties. This list is not exhaustive either.
  • the rough surface of the inside of the thrust washer may function to cause the fluid to be conveyed through the rotating gears of the gear pump between the faces of the gears and the inside of the thrust washer and the distribution of the fluid across the end faces of the gears or improved and / or the rough surface may serve to adhere the liquid of the inside of the axial disc to a lubricating film between the inside of the axial disc and to hold the end faces of the gears.
  • the latter in particular counteracts dry or mixed friction when the gear pump starts up after a standstill.
  • a rough surface is not necessary on the entire surface of the inside of the axial disc, it suffices a rough surface in the region where the axial disc abuts the end faces of the gears of the gear pump. This is the subject of claim 7.
  • Claim 8 provides that the axial disc has a pressure field on its outer side.
  • Subject matter of claim 9 is a gear pump with an axial disc of the type described above on a front side of the gears of the gear pump, preferably, the gear pump on both sides of their gears on axial discs.
  • Subject matter of claim 10 is an internal gear pump with one or preferably two such axial discs.
  • the gear pump according to the invention is provided in particular as a hydraulic pump for a hydraulic, slip-controlled and / or external power vehicle brake system. Such hydraulic pumps are often, though not necessarily, referred to as return pumps. Another use of the gear pump according to the invention is in common-rail fuel injection systems for internal combustion engines, in particular as Vor fundamentalpumpe ..
  • Figure 1 is an internal gear pump according to the invention in front view without housing; an axial section of the internal gear pump of Figure 1 along the line II - II in Figure 1;
  • FIG. 3 shows a view of an inner side of an axial disk of the internal gear pump from FIGS. 1 and 2 according to the invention;
  • Figure 4 shows a modified embodiment of an inventive
  • inventive internal gear pump 1 has a designated as a pinion 2 externally toothed gear, which is non-rotatably on a pump shaft 3.
  • the pinion 2 is arranged in an internally toothed ring gear 4, which is rotatably mounted in a bearing ring 5 slidably.
  • the pinion 2 and the ring gear 4, which are also referred to collectively as gears 2, 4 are the same width and have mutually parallel, offset axes of rotation, so that they mesh with each other on a peripheral portion.
  • the pinion 2 is rotatably driven by rotary drive of the pump shaft 3 and in turn drives the ring gear 4 rotating in the bearing ring 5. Outside the peripheral portion, in which the two gears 2, 4 mesh with each other, they define a sickle-shaped pump chamber 6 extending in the circumferential direction.
  • the pump chamber 6 opens near an end from one side of an inlet bore 7, which defines a suction region 8 of the pump chamber 6. Offset in the circumferential direction opens a circular arc-shaped slot 9 in the pump chamber 6, which extends to near the other end of the crescent-shaped pump chamber 6.
  • the slot 9 is part of a pump outlet and defines a pressure region 10 of the pump chamber 6.
  • a crescent-shaped and subsequently referred to as sickle 1 1 body is disposed between the pinion 2 and the ring gear 4 in the pump chamber 6 and separates the suction region 8 from the pressure region 10.
  • the sickle 1 1 is in two parts, it has a sickle-shaped outer part 12, at the outside of which tooth tips of teeth of the ring gear 4 abut and slide entlag during operation of the internal gear pump 1, and a sickle-shaped inner part 13, abut against the inside of tooth heads of teeth of the pinion 2 and during operation along the internal gear pump 1, on.
  • a leg spring 14 which is disposed between the outer part 12 and the inner part 13, pushes the outer part 12 to the outside and the inner part 13 inwardly against the tooth heads the teeth of the gears 2, 4.
  • the outer part 12 and the inner part 13 are supported on a bolt 16, which is the pump chamber 6 transversely, d. H. axially parallel to the gears 2, 4, interspersed.
  • liquid volumes are included, which are promoted in a rotary drive of the gears 2, 4 in the direction of the arrow P liquid from the suction region 8 to the pressure region 10.
  • FIG. 3 shows an inner side of one of the two axial disks 17, with the inside referring to the gear wheels 2, 4 facing and abutting the end faces of the gear wheels 2, 4.
  • the axial discs 17 have the shape of circular segments which pass over the pump shaft 3 and occupy more than one semicircular surface.
  • a radius of the axial discs 17 is slightly smaller than a radius of the ring gear 4, however, the axial discs 17 are so large that they cover the interdental spaces between the teeth of the ring gear 4 to the outside over a tooth base.
  • the axial plates 17 At one end of a chordwise edge 18, the axial plates 17 have a recess in the form of a slanting step 19.
  • the axial discs 17 have a hole 20 for the passage of the pump shaft 3 and a hole 21 for the passage of the bolt 16 near its chordwise edge 18.
  • the axial plates 17 cover the pressure region 10 of the pump chamber 6 completely, their chordwise direction 18 extending edge is located in the suction region 8 of the pump chamber 6.
  • a peripheral edge of the axial discs 17 is hidden in Figure 1 of the gears 2, 4, it is with a Drawn dashed line.
  • the axial discs 17 On their outer sides facing away from the toothed wheels 2, 4, the axial discs 17 each have a pressure field 22, which is drawn with dashed lines in FIG.
  • the pressure pad 22 is a crescent-shaped, shallow recess in the outer side of the axial discs 17, which extends over the pressure region 10 of the pump chamber 6 and a portion of the sickle 1 1.
  • the pressure field 22 communicates through the arcuate slot 9, which passes through the axial discs 17 and is within the pressure field 22, with the pressure region 10, so that the axial discs 17 are pressurized on their outer sides and pressed against the end faces of the gears 2, 4, to achieve a good seal there.
  • the inner sides of the axial disks 17 are provided with a number of grooves 23, which run in the shape of an arc (not necessarily circular arc-shaped) in the circumferential direction and have a radial component.
  • grooves 23 in the region of the ring gear 4 and in the region of the pinion 2. The grooves 23 are formed so that they from the pump chamber 6 and spaces between the teeth of the gears 2, 4 between the gears 2, 4 and the axial discs 17 lead.
  • the gears 2, 4 In a rotary drive, the gears 2, 4 cause a fluid flow through the grooves 23 between the end faces of the gears 2, 4 and the thrust washers 17, whereby a good lubrication between the rotationally fixed thrust washers 17, by the pressurization from the outside against the gears 2, 4th are pressed, and the gears 2, 4 is reached.
  • the internal gear pump 1 is housed in a cylindrical countersink of a pump housing 24, which is closed by a circular disk-shaped housing cover 25.
  • the bearing ring 5 of the ring gear 4 is pressed into the countersinking of the pump housing 4, which is an axial disc 17 abuts a base 26 of the countersinking of the pump housing 24.
  • the other axial disc 17 rests against the housing cover 25, the pressure fields 22 of the axial discs 17 not visible in FIG. 2 are located between the axial discs 17 and the base 26 of the countersinking of the pump housing 24 or the housing cover 25.
  • the internal gear pump 1 is for delivering brake fluid provided in a hydraulic vehicle brake system, not shown, the pump housing 24 may be part of a so-called. Hydraulic block, in which not shown hydraulic components such as solenoid valves of a slip control of Vehicle brake system housed and hydraulically interconnected.
  • the pump shaft 3 is slidingly mounted with bearing bushes 27 in the pump housing 24 and in the housing cover 25.
  • FIG. 4 shows a modified embodiment of an axial disk 17 of the internal gear pump 1.
  • the inside of the axial disk 17 from FIG. 4 facing the gearwheels 2, 4 of the internal gear pump 1 facing the end faces of the gearwheels 2, 4 has rough surfaces 28 on.
  • the rough surfaces 28 are limited to a circular area, the hole 20 for the passage of the
  • the rough surfaces 28 are in the range of the gears 2, 4 of the internal gear pump 1.
  • the rough surfaces 28 improve lubrication between see the axial discs 17 and the Gears 2, 4 of the internal gear pump 1, at the end faces of the axial discs 17 abut.
  • the lubricating effect is presumably due to the fact that the liquid conveyed by the internal gear pump 1 adheres to the rough surfaces 28.
  • the lubricating effect may also be based on the rough surfaces 28 forming channels on the inner sides of the axial discs 17, through which the gears 2, 4 of the internal gear pump 1 in a rotary drive promote the required of the internal gear pump 1 liquid, so that the liquid between the axial discs 17 and the end faces of the gears 2, 4 passes.
  • the rough surfaces 28 are made by laser processing, eroding, cold striking,
  • the rough surfaces 28 can be achieved by coatings, for example, by electrochemical deposition of metals, wherein a specific current profile is chosen for the deposition, which causes the rough surface 28.
  • the current profile when depositing the metal on the inside of the axial discs 17 causes a spherical coating, ie a deposit in the form of microscopic, equal or different sized and uniformly or non-uniformly distributed over the surface arranged balls.
  • Another possibility is a so-called DLC coating (diamond-like coating), ie a coating of the inner sides of the axial disks 17 with amorphous carbon.
  • the carbon has a good dry lubricant property on. In addition, it is porous and stores with the internal gear pump 1 promoted liquid as a lubricant.
  • the axial disk 17 of FIG. 4 is of the same construction as the axial disk 17 of FIG. 3.
  • the explanations relating to FIG. 3 are additionally referred to in FIG. 4, the same elements are shown in FIG. 4 with the same reference numerals as in FIG Figure 3 provided.

Landscapes

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

Abstract

L'invention concerne une pompe à engrenages internes (1) pour un système de freinage hydraulique. Selon l'invention, des disques axiaux (17) comprimés par application de pression sur leurs côtés extérieurs contre des engrenages (2, 4) de la pompe à engrenages internes (1) pour l'étanchage latéral, sont pourvus sur leurs côtés intérieurs de rainures (23) par l'intermédiaire desquelles les engrenages (2, 4) transportent du liquide de frein en cas d'entraînement rotatif, le liquide de frein parvenant de ce fait entre les disques axiaux (17) et les engrenages (2, 4) de la pompe à engrenages internes (1) pour la lubrification.
EP11788530.1A 2010-12-23 2011-11-30 Disque axial et pompe à engrenages comportant un disque axial Withdrawn EP2655887A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010064130 DE102010064130A1 (de) 2010-12-23 2010-12-23 Axialscheibe und Zahnradpumpe mit Axialscheibe
PCT/EP2011/071395 WO2012084437A2 (fr) 2010-12-23 2011-11-30 Disque axial et pompe à engrenages comportant un disque axial

Publications (1)

Publication Number Publication Date
EP2655887A2 true EP2655887A2 (fr) 2013-10-30

Family

ID=45047839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11788530.1A Withdrawn EP2655887A2 (fr) 2010-12-23 2011-11-30 Disque axial et pompe à engrenages comportant un disque axial

Country Status (5)

Country Link
US (1) US9115717B2 (fr)
EP (1) EP2655887A2 (fr)
JP (1) JP2014500439A (fr)
DE (1) DE102010064130A1 (fr)
WO (1) WO2012084437A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011006842A1 (de) * 2011-04-06 2012-10-11 Robert Bosch Gmbh Innenzahnradpumpe
JP2016169718A (ja) * 2015-03-16 2016-09-23 株式会社島津製作所 歯車ポンプ又はモータ
JP2016183631A (ja) * 2015-03-26 2016-10-20 大豊工業株式会社 ギアポンプ
JP6528521B2 (ja) * 2015-04-14 2019-06-12 株式会社デンソー 流体ポンプ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547055A1 (de) * 1975-10-21 1977-04-28 Robert Jung Hochdruck-innenzahnradpumpe

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
DE1528946A1 (de) 1963-06-21 1969-10-23 Bosch Gmbh Robert Innenzahnradpumpe oder -motor
DE1528947A1 (de) 1963-07-04 1969-09-11 Bosch Gmbh Robert Innenzahnradmaschine
DE1553193B2 (de) 1965-05-12 1976-07-08 Einstellvorrichtung fuer eine zahnradpumpe fuer gleichbleibende foerderrichtung
US4132515A (en) * 1975-10-27 1979-01-02 Kruger Heinz W Crescent gear pump or motor having bearing means for supporting the ring gear
JPS5791391A (en) 1980-11-27 1982-06-07 Kayaba Ind Co Ltd Loading mechanism for inscribed gear pump or motor
JPS59168589U (ja) 1983-04-28 1984-11-12 石川島播磨重工業株式会社 内接歯車ポンプ
DE19613833B4 (de) 1996-04-06 2004-12-09 Bosch Rexroth Ag Innenzahnradmaschine, insbesondere Innenzahnradpumpe
DE19858483A1 (de) * 1998-12-18 2000-08-31 Mannesmann Rexroth Ag Hydraulische Verdrängermaschine, insbesondere Verdrängerpumpe
DE19917593C2 (de) * 1999-04-19 2002-05-02 Hydraulik Ring Gmbh Hydraulische Verdrängermaschine
JP4007080B2 (ja) * 2002-06-06 2007-11-14 株式会社アドヴィックス ブレーキ装置用回転式ポンプ
JP2009144689A (ja) 2007-12-18 2009-07-02 Toshiba Corp 内接ギヤ形ポンプ
DE102008054767A1 (de) 2008-12-16 2010-06-17 Robert Bosch Gmbh Förderaggregat
JP2010159724A (ja) 2009-01-09 2010-07-22 Isuzu Motors Ltd オイルポンプ

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547055A1 (de) * 1975-10-21 1977-04-28 Robert Jung Hochdruck-innenzahnradpumpe

Also Published As

Publication number Publication date
WO2012084437A3 (fr) 2013-05-30
US9115717B2 (en) 2015-08-25
DE102010064130A1 (de) 2012-06-28
JP2014500439A (ja) 2014-01-09
WO2012084437A2 (fr) 2012-06-28
US20140010696A1 (en) 2014-01-09

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