EP2161458B1 - Agencement d'alimentation d'un système hydraulique en liquide hydraulique - Google Patents

Agencement d'alimentation d'un système hydraulique en liquide hydraulique Download PDF

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Publication number
EP2161458B1
EP2161458B1 EP20090168925 EP09168925A EP2161458B1 EP 2161458 B1 EP2161458 B1 EP 2161458B1 EP 20090168925 EP20090168925 EP 20090168925 EP 09168925 A EP09168925 A EP 09168925A EP 2161458 B1 EP2161458 B1 EP 2161458B1
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EP
European Patent Office
Prior art keywords
reservoir
arrangement according
line
control
hydraulic
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.)
Active
Application number
EP20090168925
Other languages
German (de)
English (en)
Other versions
EP2161458A3 (fr
EP2161458A2 (fr
Inventor
Scott R. Wiens
Helmut Schäfer
Christian Dr. Brüser
Harm-Hendrik Lange
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Priority to PL09168925T priority Critical patent/PL2161458T3/pl
Publication of EP2161458A2 publication Critical patent/EP2161458A2/fr
Publication of EP2161458A3 publication Critical patent/EP2161458A3/fr
Application granted granted Critical
Publication of EP2161458B1 publication Critical patent/EP2161458B1/fr
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20592—Combinations of pumps for supplying high and low pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2931—Diverse fluid containing pressure systems
    • Y10T137/3109—Liquid filling by evacuating container
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86035—Combined with fluid receiver
    • Y10T137/86043—Reserve or surge receiver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86187—Plural tanks or compartments connected for serial flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86348—Tank with internally extending flow guide, pipe or conduit

Definitions

  • the invention relates to an arrangement for supplying a hydraulic system with hydraulic fluid.
  • the arrangement comprises a working reservoir for receiving the hydraulic fluid intended for operation of the hydraulic system.
  • the working reservoir is designed, for example, as a differential housing of a differential gear of an agricultural utility vehicle.
  • the arrangement comprises an auxiliary reservoir communicating with the working reservoir via a hydraulic line for temporary storage of hydraulic fluid removed from the working reservoir.
  • a charging oil pump continuously promotes hydraulic fluid from a formed by a differential housing working reservoir against gravity in a higher-lying auxiliary reservoir for temporary storage, the hydraulic fluid starting from the auxiliary reservoir is fed via a controllable high pressure pump in a hydraulic system for the operation of hydraulic vehicle units. Hydraulic fluid that is no longer required by the vehicle units is returned to the working reservoir.
  • the hydraulically operated vehicle units are, in particular, a steering and braking system and optionally attachable to the tractor agricultural implements, the hydraulic actuating cylinder or the like. Depending on the hydraulic fluid consumption of the vehicle units, there may be more or less pronounced fluctuations in the fluid level in the working reservoir.
  • the arrangement according to the invention for supplying a hydraulic system with hydraulic fluid comprises a working reservoir for receiving the hydraulic fluid intended for operation of the hydraulic system and an auxiliary reservoir communicating with the working reservoir via a hydraulic line for temporary storage of hydraulic fluid removed from the working reservoir.
  • an air conveying device is present, which is connected on the low-pressure side to a suction line opening into a liquid-free region of the auxiliary reservoir so that a negative pressure can be built up in the intake line and thus in the associated auxiliary reservoir relative to the atmospheric ambient pressure, and with a control line connected, the one Has control opening, which is covered at least before starting up the air conveyor of the located in the working reservoir hydraulic fluid.
  • the air conveying device If the air conveying device is put into operation, hydraulic fluid flows from the working reservoir via the hydraulic connection into the auxiliary reservoir due to the negative pressure built up in the auxiliary reservoir via the suction line.
  • the liquid level drops in the working reservoir, wherein below a certain liquid level, the control opening is at least partially exposed in the control line, so that the negative pressure built up in the auxiliary reservoir as a result of the intake via the control line from the surrounding air drops to a dependent on the flow resistance of the control port value. Due to the pressure drop, the liquid level swings back in the direction of the control opening, so that it is again covered by hydraulic fluid. This process is repeated with decreasing intensity until a corresponding equilibrium position of the liquid level in the working reservoir has been established.
  • the liquid columns communicating in the two reservoirs via the hydraulic line are excited to a damped oscillation, whereby, after the oscillation has subsided, an equilibrium position of the liquid level in the working reservoir which depends on the position or installation height and / or the flow resistance of the control opening is established . regulates.
  • the air conveying device is preferably designed as an electrically driven vacuum pump. Alternatively, it is conceivable to drive them by means of an internal combustion engine arranged in the agricultural vehicle. For this purpose, the air conveyor can be connected via a belt with the engine.
  • control openings in particular designed as throttle valves, are provided in the control line. These are preferably arranged such that they are successively exposed when the negative pressure builds up due to the liquid level falling in the working reservoir.
  • the pressure drop in the control line is slowed down in this case, so that the excitation of a damped oscillation of the liquid columns located in the reservoirs and communicating via the hydraulic line is largely suppressed. This favors a faster adjustment or regulation of a stable equilibrium position of the liquid level in the working reservoir.
  • the suction line can either open directly into the control line or indirectly communicate with it.
  • the control line can also open into the liquid-free region of the auxiliary reservoir, so that the intake and the control line communicate only indirectly with each other and undesired penetration of hydraulic fluid drawn in via the control line from the working reservoir into the air conveying device connected to the suction line is prevented.
  • control opening is formed in the control line as a circular or slot-shaped inlet, the latter can be oriented in the longitudinal direction of the control line.
  • control opening may be formed in an end region projecting into the working reservoir, for example through an open end of the control line. In the case of a plurality of control openings, these are preferably arranged one above the other in the end region of the control line.
  • the control line is surrounded by a shielding element in the region of the control opening.
  • the shielding element is designed or arranged such that an occurrence of turbulence in the region of the control opening is largely suppressed.
  • the shielding element may in particular be a cylindrical shielding tube, which is closed at its lower end by means of a liquid-permeable grid.
  • the cylindrical shielding tube is dimensioned such that it forms, together with the control line, an annular gap open at the top, via which the control orifice communicate with the hydraulic fluid in the working reservoir can. In this case, when the liquid level falls in the working reservoir, the hydraulic fluid can flow away through the liquid-permeable grid.
  • the recoil valve has, in particular, a floating ball valve which, when hydraulic fluid penetrates, is pressed against a valve seat in such a way that an undesirable flow of hydraulic fluid is prevented.
  • hydraulic fluid does not drain in the direction of the working reservoir and the liquid level in the working reservoir in the sequence can not assume a stable equilibrium position. This can ultimately lead to overfilling of the auxiliary reservoir and thus to an ingress of hydraulic fluid via the intake into the associated air conveyor. It is therefore advantageous in the control line in a liquid-free area Provide the working reservoir opening throttle valve, which reduces the built-up by means of the air conveyor in the suction negative pressure to non-critical values.
  • a pressure relief valve may be arranged such that this is permeable when a predetermined negative pressure is exceeded and produces a pressure equalization connection between the low pressure side of the air conveyor and the working reservoir.
  • the pressure-limiting valve is either arranged directly in a liquid-free region of the working reservoir or connected thereto via a pressure compensation line. In the latter case, the pressure limiting valve is preferably arranged outside the working reservoir.
  • the pressure limiting valve is in particular a conventional one-way valve.
  • Fig. 1 shows a first embodiment of the inventive arrangement for supplying a hydraulic system in an agricultural utility vehicle, not shown, with hydraulic fluid.
  • the agricultural utility vehicle is, for example, a tractor, a harvesting machine, a forage harvester or a spraying machine.
  • the arrangement 10 accommodated in an engine compartment or in the region of a transmission assembly of the agricultural utility vehicle comprises a working reservoir 12 for receiving the hydraulic fluid intended for operation of the hydraulic system and an auxiliary reservoir 16 communicating with the working reservoir 12 via a hydraulic line 14 for temporary storage or buffering the working reservoir 12 removed hydraulic fluid.
  • the working reservoir 12 is designed, for example, as a differential housing of a differential gear encompassed by the agricultural utility vehicle.
  • the hydraulic fluid in the differential housing also forms a sump for lubricating the differential gear.
  • the hydraulic fluid is conventional hydraulic or gear oil.
  • the hydraulic line 14 extends between a lower portion of the working reservoir 12 and a lower portion of the auxiliary reservoir 16.
  • the auxiliary reservoir 16 is arranged elevated relative to the working reservoir 12 , where the Hydraulic line 14 is connected to a bottom of the auxiliary reservoir 16, so that the auxiliary reservoir 16 can be completely empty in the direction of the working memory 12.
  • the hydraulic fluid is supplied by means of a charging oil pump 18 via an intermediate oil filter 20 to an existing in the agricultural vehicle engine 22 and other power transmitting components for the purpose of lubrication.
  • a controllable high-pressure pump 24 connected downstream of the oil filter 20 serves to supply hydraulically operated vehicle units 26, for example a steering and braking system or an attachment attachable to the agricultural utility vehicle, which has hydraulic actuating cylinders or the like. Not (more) required or excess hydraulic fluid is returned here via lines not shown in the working reservoir 12.
  • an air delivery device 28 which is connected on the low-pressure side to a suction line 32 opening into a liquid-free region 30 of the auxiliary reservoir 16, so that a negative pressure can be built up in the auxiliary reservoir 16 relative to the atmospheric ambient pressure, and the other side is connected to a control line 34 is, which has a plurality of similar, designed as throttle valves control openings 36a and 34b formed by a downwardly open end of the control line control opening 36b, wherein the control openings 36a and 36b at least before commissioning of the air conveyor 28, so before building the negative pressure in the auxiliary reservoir 16 of the hydraulic fluid located in the working reservoir 12 are completely covered.
  • control openings 36a and 36b are arranged one above the other in an end region 38 of the control line 34 projecting into the working reservoir 12.
  • the control openings 36a are formed in the control line 34 as circular or slot-shaped inlets, the latter being oriented in the longitudinal direction of the control line 34.
  • the control opening 36b formed by the open end of the control line 34 typically has a diameter of the order of 25 millimeters.
  • control openings 36a and 36b has merely exemplary character.
  • the air conveying device 28 is a conventional vacuum pump driven electrically or by means of the internal combustion engine 22 of the agricultural utility vehicle Design type. This generates in the auxiliary reservoir 16, a negative pressure in the order of typically 50 mbar.
  • the control line 34 is surrounded by a shielding element 40 in the region of the control openings 36a and 36b.
  • the shielding element 40 is a cylindrical shielding tube 42, which is closed at its lower end by means of a liquid-permeable grid 44.
  • the cylindrical shielding tube 42 is dimensioned such that it forms, together with the control line 34, an upwardly open annular gap 46, via which the control openings 36a and 36b can communicate with the hydraulic fluid in the working reservoir 12.
  • a throttle valve 48 or 50 is respectively arranged in the intake line 32 and control line 34, which controls the negative pressure built up by means of the air delivery device 28 increases upon entry of hydraulic fluid such that a arranged between the throttle valve 48 and 50 and the air conveyor 28 pressure relief valve 52 is permeable when a predetermined negative pressure is exceeded and thereby produces a pressure equalization connection between the low pressure side of the air conveyor 28 and the working reservoir 12.
  • the pressure relief valve 52 is for this purpose directly in a liquid-free region of the working reservoir 12 arranged.
  • the pressure relief valve 52 is a conventional one-way valve.
  • Fig. 2 shows a second embodiment of the inventive arrangement for supplying a hydraulic system with hydraulic fluid. This differs from the one in Fig. 1 illustrated first embodiment that instead of the two throttle valves 48 and 50, only a single throttle valve 54 is provided. Furthermore, the pressure limiting valve 52 is arranged in the present case outside the working reservoir 12 and connected thereto via a pressure equalization line 56.
  • Fig. 3 shows a third embodiment of the inventive arrangement for supplying a hydraulic system with hydraulic fluid. This differs from the one in Fig. 2 illustrated second embodiment that instead of the throttle valve 54, a return valve 58 is provided which is arranged such that it is blocked in the case of penetrating hydraulic fluid.
  • the recoil valve 58 has a floating ball valve which is pressed upon penetration of hydraulic fluid against a valve seat such that an undesirable flow of hydraulic fluid is prevented.
  • the intake manifold 32 does not open directly into the control line 34. Rather, there is only an indirect connection between the intake manifold 32 and the control line 34. For this purpose, the control line 32 also opens into the liquid-free region 30 of the auxiliary reservoir 16.
  • the Both lines 32 and 34 communicate only indirectly with each other in this case, an additional protection against undesired penetration of hydraulic fluid sucked in via the control line 34 from the working reservoir 12 into the air conveying device 28 connected to the suction line 32.
  • the intake line 32 and the control line 34 are connected to an upper side of the auxiliary reservoir 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Claims (16)

  1. Agencement d'alimentation d'un système hydraulique en liquide hydraulique, comprenant un réservoir de travail (12) pour recevoir le liquide hydraulique prévu pour faire fonctionner le système hydraulique et un réservoir auxiliaire (16) en liaison avec le réservoir de travail (12) par le biais d'une conduite hydraulique (14), pour le stockage intermédiaire de liquide hydraulique prélevé du réservoir de travail (12), un dispositif de refoulement d'air (28) étant prévu, lequel est connecté du côté basse pression d'une part à une conduite d'aspiration (32) débouchant dans une région (30) du réservoir auxiliaire (16) exempte de liquide, de sorte qu'une dépression dans le réservoir auxiliaire (16) puisse augmenter par rapport à la pression atmosphérique environnante, caractérisé en ce que le dispositif de refoulement d'air (28) est connecté d'autre part à une conduite de commande (34), qui présente une ouverture de commande (36a, 36b) qui est recouverte, au moins avant la mise en service du dispositif de refoulement d'air (28), par le liquide hydraulique se trouvant dans le réservoir de travail (12).
  2. Agencement selon la revendication 1, caractérisé en ce que la conduite hydraulique (14) s'étend entre une région inférieure du réservoir de travail (12) et une région inférieure du réservoir auxiliaire (16).
  3. Agencement selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que la conduite d'aspiration (32) débouche directement dans la conduite de commande (34) ou est en liaison indirecte avec celle-ci.
  4. Agencement selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que l'ouverture de commande (36a, 36b) dans la conduite de commande (34) est réalisée sous forme d'entrée de forme circulaire ou en forme de fente.
  5. Agencement selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que l'ouverture de commande (36a, 36b) est réalisée dans une région d'extrémité (38) de la conduite de commande (34) pénétrant dans le réservoir de travail (12).
  6. Agencement selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que plusieurs ouvertures de commande (36a, 36b) sont réalisées dans la région d'extrémité (38) de la conduite de commande (34) pénétrant dans le réservoir de travail (12), les ouvertures de commande (36a, 36b) étant disposées l'une au-dessus de l'autre.
  7. Agencement selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que l'ouverture de commande (36a) est réalisée sous forme de soupape d'étranglement.
  8. Agencement selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que la conduite de commande (34) est entourée dans la région de l'ouverture de commande (36a, 36b) par un élément de protection (40).
  9. Agencement selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que l'élément de protection (40) est un tube de protection cylindrique (42).
  10. Agencement selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que le tube de protection cylindrique (42) est fermé à son extrémité inférieure au moyen d'un treillis (44) perméable aux liquides.
  11. Agencement selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que le tube de protection cylindrique (42) est dimensionné de telle sorte qu'il constitue, conjointement avec la conduite de commande (34), une fente annulaire (46) ouverte vers le haut, par le biais de laquelle l'ouverture de commande (36a, 36b) peut communiquer avec le liquide hydraulique se trouvant dans le réservoir de travail (12).
  12. Agencement selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce qu'une soupape d'étranglement (48, 50, 54) est disposée dans la conduite d'aspiration (32) et/ou la conduite de commande (34).
  13. Agencement selon l'une quelconque des revendications 1 à 12,
    caractérisé en ce qu'un clapet anti-retour (58) est disposé dans la conduite d'aspiration (32) et/ou la conduite de commande (34).
  14. Agencement selon l'une quelconque des revendications 1 à 13,
    caractérisé en ce qu'une soupape d'étranglement (60) débouchant dans une région exempte de liquide du réservoir de travail (12) est prévue dans la conduite de commande (34).
  15. Agencement selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce qu'entre la soupape d'étranglement (48, 50, 54, 60) et le dispositif de refoulement d'air (28) ou entre le clapet anti-retour (58) et le dispositif de refoulement d'air (28) est disposée une soupape de limitation de la pression (52) de telle sorte qu'une connexion d'équilibrage de pression puisse être établie entre le côté basse pression du dispositif de refoulement d'air (28) et le réservoir de travail (12).
  16. Véhicule automobile, notamment véhicule utilitaire agricole, comprenant un agencement (10) pour l'alimentation d'un système hydraulique en liquide hydraulique selon l'une quelconque des revendications 1 à 15.
EP20090168925 2008-09-03 2009-08-28 Agencement d'alimentation d'un système hydraulique en liquide hydraulique Active EP2161458B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09168925T PL2161458T3 (pl) 2008-09-03 2009-08-28 Układ do zasilania układu hydraulicznego płynem hydraulicznym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008041799 2008-09-03
DE102008043449 2008-11-04

Publications (3)

Publication Number Publication Date
EP2161458A2 EP2161458A2 (fr) 2010-03-10
EP2161458A3 EP2161458A3 (fr) 2010-08-04
EP2161458B1 true EP2161458B1 (fr) 2011-09-07

Family

ID=41460960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090168925 Active EP2161458B1 (fr) 2008-09-03 2009-08-28 Agencement d'alimentation d'un système hydraulique en liquide hydraulique

Country Status (6)

Country Link
US (2) US8151818B2 (fr)
EP (1) EP2161458B1 (fr)
AT (1) ATE523696T1 (fr)
DE (1) DE102009001448A1 (fr)
ES (1) ES2373081T3 (fr)
PL (1) PL2161458T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009001448A1 (de) * 2008-09-03 2010-03-04 Deere & Company, Moline Anordnung zur Versorgung eines Hydrauliksystems mit Hydraulikflüssigkeit
US9599127B2 (en) * 2009-03-10 2017-03-21 Deere & Company Hydraulic circuit supply system
JP5905295B2 (ja) * 2012-02-27 2016-04-20 三菱重工プラスチックテクノロジー株式会社 作動油貯留装置、および、射出成型装置
US9890847B2 (en) * 2015-04-30 2018-02-13 Deere & Company Anti-siphon arrangement for hydraulic systems
CN113375060B (zh) * 2021-06-06 2022-07-19 中国长江电力股份有限公司 水轮机调速器液压系统压力容器应急补油装置及方法

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Publication number Priority date Publication date Assignee Title
DE2822209A1 (de) * 1978-05-22 1979-11-29 Barmag Barmer Maschf Verbrennungskraftmaschine mit einer oelpumpe zur herstellung von schmieroelstroemen
US4371318A (en) * 1978-10-18 1983-02-01 Kime James A Hydraulic fluid power system
US4445829A (en) * 1980-12-15 1984-05-01 Miller James D Apparatus for dampening pump pressure pulsations
US5335704A (en) * 1992-06-09 1994-08-09 Safeway Stores, Inc. Pasteurized to raw liquid processing system
SE9303680L (sv) * 1993-05-25 1994-11-26 Haakan Ingvast Produktutveckli Vätskeburet system med anordning för avgasning av vätskan
AU7374400A (en) * 1999-09-21 2001-04-24 Federal Mogul Corporation Fuel transfer pump and control
US6845782B2 (en) * 2002-10-11 2005-01-25 International Truck Intellectual Property Company, Llc Multiple tank circulating fuel system
US7846342B2 (en) * 2007-01-18 2010-12-07 Putzmeister America, Inc. Hydraulic fluid dehydration system and method including pre-heating
DE102007033419B4 (de) * 2007-07-18 2016-03-24 Audi Ag Trockensumpfschmiervorrichtung für eine Brennkraftmaschine
DE102009001448A1 (de) * 2008-09-03 2010-03-04 Deere & Company, Moline Anordnung zur Versorgung eines Hydrauliksystems mit Hydraulikflüssigkeit

Also Published As

Publication number Publication date
US8151818B2 (en) 2012-04-10
DE102009001448A1 (de) 2010-03-04
ATE523696T1 (de) 2011-09-15
EP2161458A3 (fr) 2010-08-04
PL2161458T3 (pl) 2012-02-29
US20120006432A1 (en) 2012-01-12
EP2161458A2 (fr) 2010-03-10
ES2373081T3 (es) 2012-01-31
US20100051123A1 (en) 2010-03-04

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