WO2014121862A1 - Pompe volumétrique à volume de refoulement variable - Google Patents

Pompe volumétrique à volume de refoulement variable Download PDF

Info

Publication number
WO2014121862A1
WO2014121862A1 PCT/EP2013/074698 EP2013074698W WO2014121862A1 WO 2014121862 A1 WO2014121862 A1 WO 2014121862A1 EP 2013074698 W EP2013074698 W EP 2013074698W WO 2014121862 A1 WO2014121862 A1 WO 2014121862A1
Authority
WO
WIPO (PCT)
Prior art keywords
displacement pump
positive displacement
housing
rotor
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.)
Ceased
Application number
PCT/EP2013/074698
Other languages
German (de)
English (en)
Inventor
Claus Jäger
Giovanni Giarratano
Uwe Zellner
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 Automotive Steering GmbH
Original Assignee
ZF Lenksysteme 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 ZF Lenksysteme GmbH filed Critical ZF Lenksysteme GmbH
Publication of WO2014121862A1 publication Critical patent/WO2014121862A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • 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
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • F04C14/223—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam
    • F04C14/226—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members using a movable cam by pivoting the cam around an eccentric axis
    • 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
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • 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
    • F04C2240/60—Shafts

Definitions

  • the invention relates to a displacement pump with variable displacement according to the preamble of claim 1.
  • variable displacement pumps are suitable, for example, for use in motor vehicles and in this
  • German Offenlegungsschrift DE 101 28 499 A1 discloses a displacement pump according to the preamble of claim 1.
  • variable displacement pumps includes, for example, a power steering device of motor vehicles.
  • variable displacement pumps have the advantage that by shifting a
  • Eccentricity between the rotor and the cam ring can be adjusted. In this way, the geometric displacement of the working chambers can be increased or decreased.
  • the term "geometric delivery volume" designates the delivered volume of the positive displacement pump per revolution. In the case of an adjustable vane pump, the geometric delivery volume is determined by the difference between the smallest and the largest cell. Due to the eccentricity between the rotor and the cam ring and / or by the rotation of the rotor, the volume of a single working chamber or work cell can be changed.
  • DE 101 28 499 A1 usually includes a rotor, rotor blades and a cam ring and optionally a surrounding outer ring.
  • the front side of the rotor set is sealed by planar boundary elements, which may be formed, for example, as control plates.
  • planar boundary elements may be formed, for example, as control plates.
  • the rotor is usually formed as a separate element and is in the
  • Receiving opening for receiving the driven shaft has a toothing, which corresponds to a corresponding counter-toothing on the outer circumference of the shaft.
  • the interlocking teeth allow a due to their positive connection
  • the rotor has on its outer circumference slit-shaped receptacles for the
  • Rotor elements or wings so that the core diameter of the rotor on is reduced. It must therefore be ensured that between the slot-shaped recess extending from the outside and the internal toothing of the rotor for sufficient material force transmission is present, so that the rotor can be used even at higher driving forces occurring.
  • an object of the present invention is to reduce the disadvantages known from the prior art and to provide a variable displacement pump, in particular at higher
  • Another object is to provide a positive displacement pump with a more variable field of application.
  • a positive displacement pump having the features of claim 1. Accordingly, there is provided a positive displacement pump in which the driven shaft and the rotor are integrally formed with each other.
  • the pump is designed as a throughput pump, wherein the driven shaft is able to provide a drive torque, in particular for driving a further unit.
  • This present invention aspect can be combined with or used in combination with the first aspect of the invention to solve the above objects.
  • the housing has a recess on its housing wall, by means of which the driven shaft of the positive displacement pump can be connected to a further unit.
  • the driven shaft of the positive displacement pump can be connected to a further unit.
  • Housing wall extend therethrough.
  • the unit to be connected can also be introduced through the recess on the housing wall into the interior of the housing in order to be connected to the driven shaft of the positive displacement pump.
  • a connection of the driven shaft with another unit does not necessarily mean an immediate and direct connection.
  • other force-transmitting or torque-transmitting elements can be interposed.
  • the housing has a receptacle for fastening an aggregate which can be driven by the driven shaft to the housing.
  • a receptacle may include, for example, mounting holes for receiving fastening screws and the like.
  • the driven shaft is rotatably supported within the housing at least two bearing points by means of a bearing, wherein each of the bearings is preferably designed as a sliding bearing.
  • the bearing of the driven shaft as pure Sliding bearing means that a particularly low-noise bearing can be provided in comparison with known roller bearings.
  • the housing in the region of the bearing points of the driven shaft has a substantially groove-shaped recess, through which a fluid can be at least partially passed past the bearings.
  • the essentially groove-shaped recess has the function of a bypass channel through which, especially in the case of increased leakage oil volume, no excessive oil flow is conducted to the shaft sealing ring of the sliding bearing. Instead, a portion of the leak can be passed over the bypass channel on the plain bearing, so that no unwanted pressure in the area of the bearing points can be built on the plain bearings.
  • the plain bearings may have at least one lubrication groove. Such lubrication is used in particular to ensure an oil depot in all operating conditions of the sliding bearing, which further the life of the positive displacement pump can be advantageously increased.
  • the rotor set is sealed end face by planar boundary elements, preferably a limiting element by a bearing cap (also referred to as pump cover) is formed, the is formed with channels for guiding a control fluid for an adjustable cam ring of the rotor set.
  • a bearing cap also referred to as pump cover
  • the housing in the region of the pressure outlet has a separately formed flow part with a defined inner diameter, for example, in the housing is pressed.
  • the pressure outlet is predetermined by means of a separately formed flow part. In this way it is possible to provide one and the same housing for different pump variants, all of which require a different pressure outlet.
  • Each of these housings has a uniformly dimensioned receiving area, in which the separately formed flow part with the required inner diameter as well as a
  • Volume control panel can be used and thus provides the required pressure outlet for the pump variant.
  • a cost advantage can be achieved in the manufacture of the housing by the production of a larger common part number.
  • the rotor set further comprises at least one outer ring, wherein the
  • Inner recess of the outer ring a maximum stop (also referred to as Vollhubanschlag) and a minimum stop (also referred to as Minimalhubanschlag) for the adjustable cam ring provides and wherein the minimum stop has a smaller distance from the axis of rotation of the rotor than that
  • Housing inner wall may be provided, wherein also the minimum stop has a smaller distance from the axis of rotation of the rotor than that
  • a spring element is provided regularly, which is used to influence the position of the cam ring relative to the outer ring during operation of the positive displacement pump.
  • the spring element biases the cam ring of a
  • Pressure chamber out in front and urges the cam ring in the direction of the maximum stop to keep the geometric displacement to the maximum value.
  • the spring element simultaneously assumes the function of a starting spring, ie the spring element ensures that the cam ring is at the start of the pump in a position in which the geometric displacement is maximum or so large that the vane pump can be started.
  • cam ring is not concentric with the rotor axis of rotation, so that the vane pump can be started.
  • the outer ring itself has a specific geometry on its inner circumference, which ensures that the cam ring can not take a concentric position to the outer ring, in which the pump could feed empty. This is provided by the fact that the maximum stop and the minimum stop are not arranged at an equal distance from the axis of rotation of the rotor.
  • the cam ring located between the outer ring and the rotor (or between the housing wall and the rotor) consequently abuts the minimum stop before it can be brought into a concentric position with the rotor and the outer ring.
  • Pressure limiting valve which is connected to a control of the positive displacement pump in such a way that it receives a feedback on the operating state of the pressure relief valve.
  • Such a pressure relief valve is provided to prevent the positive displacement pump from being damaged if the system pressure is too high. Above a certain threshold value, therefore, the pressure relief valve triggers and allows a portion of the fluid to flow into a secondary line, in order to reduce the pressure in the pump in this way. If the pressure relief valve triggers (so-called DBV operation), the control of the positive displacement pump receives feedback, for example of a hydraulic or electronic type.
  • the control when the pressure relief valve triggers, the control is able to effect a displacement of the cam ring in the direction of the minimum stroke stop. In this way, it helps to reduce the system pressure within the pump.
  • the controller can increase the fluid pressure to that pressure chamber that moves the cam ring to a position where the geometric displacement of the pump is reduced
  • FIG. 1 shows a longitudinally sectioned view of the central longitudinal axis
  • Figure 2 is a cross-sectional view of the positive displacement pump of Figure 1 taken along section line II-II.
  • FIG. 3 is a longitudinal sectional view of the positive displacement pump of FIG. 2 along the
  • a positive displacement pump 1 according to the invention with variable delivery volume is shown as a single-stroke vane pump.
  • Single-stroke vane pumps are well known in terms of their basic operation from the general state of the art, for which reference is made only by way of example to DE 199 42 466 A1 and DE 102 40 499 A1. Below, therefore, only the features essential to the invention are shown in more detail.
  • the illustrated vane pump 1 is for generating a
  • Pressure fluid designed for a power steering device of a motor vehicle.
  • the vane pump 1 has a housing 2.
  • an outer ring 3 also referred to as intermediate ring
  • the housing 2 of the vane pump 1 the function of
  • outer ring 3 Take over outer ring 3.
  • a rotor 4 is mounted via a shaft 5.
  • the rotor 4 is surrounded by a cam ring 6.
  • the cam ring 6 can roll on a flattening 7 or a thickening of the outer ring 3 and thus in a nearly elliptical space 8, which is formed in the outer ring 3, move.
  • the almost elliptical space 8 is on one side by a minimum stop 8a (also called minimum stroke stop) and on the other side by a minimum stop 8a (also called minimum stroke stop)
  • Maximum stop 8b (also called full stroke stop) limited. It should be noted that the minimum stop 8a has a smaller distance from the axis of rotation R of the rotor 4 than the maximum stop 8b, as will be explained in more detail later.
  • the cam ring 6 is adjustable or displaceable within the space 8 between the minimum stop 8a and the maximum stop 8b. Between the rotor 4 and the cam ring 6 9 delimited working chambers 10 are formed via rotor elements or wings. By moving the cam ring 6, the changes
  • the pressure chambers 1 1, 12 are connected via supply bores 15, 16 in the housing 2 and corresponding bores (not shown) in the outer ring 3 fluidly connected to a control piston (not shown) or the like. As a result, the required for the displacement of the cam ring 6 pressure differences in the pressure chambers 1 1, 12 are provided.
  • the function of a control piston as well as the control of the cam ring 6 are well known from the prior art, which is why
  • the housing 2 is provided with a suction channel 14 and a pressure channel (not shown) and a Saugölzu arrangement 17 to the rotor set.
  • the rotor set (comprising the rotor 4, wing 9, the outer ring 3 and the
  • Curved ring 6 is sealed at the end by planar boundary elements 18, 19. In this case, that of the suction oil supply 17 (or the suction channel 14) facing
  • Limiting element as a front plate 18 (also called control plate) is formed.
  • the limiting the rotor set on the other end side limiting element is designed as a bearing cap 19 (also called pump cover).
  • the bearing cap 19 in this case has a rotor surface facing the flat surface 20, which ensures the frontal sealing of the rotor set.
  • Transverse forces on the cam ring 6 essentially apply the restoring force, which presses the cam ring in the direction of maximum geometric displacement. It is possible in this way to produce a vane pump 1, in which completely can be dispensed with a spring for acting on the cam ring 6 during operation of the pump 1.
  • the function of the starting spring is provided by the asymmetrically formed almost elliptical interior 8 of the outer ring, wherein the distance between the minimum stop 8a and the rotor axis of rotation R is selected such that a concentric position of the cam ring 6 to the rotor 4 by abutting the rotor 4th is prevented at the minimum stop 8a.
  • the rotor 4 in contrast to the prior art, is integral with the shaft 5
  • the shaft 5 (hence also called rotor shaft), on its drive side 21 by means of a gear 22 or a belt drive or the like driven and drives through the integral training with the rotor 4 without losses in the region of a connection with the rotor this also.
  • the pump arrangement 1 according to the invention is not designed as a solo pump, as usual, but as a through-flow pump, in which the housing 2 or the bearing cap 19 not only on the drive side
  • Drive side 21 may extend, but also on the output side has a corresponding recess 24 through which either the driven shaft 5 (as shown) and / or a connecting element 25 of an additional unit 28 may extend.
  • sealing elements 29a, 29b for example, shaft seals provided to ensure the tightness of the pump interior.
  • the connecting element 25 is connected to the output-side portion of the driven shaft 5 in such a way, for example via a positive connection, connected, that the driven shaft transmits its drive torque to the connecting element 25 and in this way also drives the unit 28.
  • Dieselvor basicpumpe As a further unit 28, a Dieselvor basicpumpe is presently shown, which can be driven by connection to the driven shaft 5.
  • Receiving section 30 may for example be provided with an external thread, a receptacle for a sealing element or the like and facilitates the attachment of another unit 28 to the vane pump 1 according to the invention.
  • the shaft 5 is further via two plain bearings 31 a and 31 b in the housing 2 and in
  • Bearing cover 19 stored. Furthermore, on the housing 2 or the bearing cap 19, groove-shaped recesses 32a, 32b are provided, which make it possible in the manner of a bypass channel, a portion of the oil flow at elevated
  • the bearing cap 19 is, as can be seen in Figure 1, taken centered on the housing 2 via a shoulder 33, wherein in the centering an additional seal, such as an annular sealing element 34, to ensure the outer tightness of the housing 2 is provided , Using the centering of the
  • the plain bearings 31 a, 31 b and the associated bearing points in the housing 2 and the bearing cap 24 are arranged such that the receiving geometry for the outer ring 3 is arranged centrally to the bearing points of the plain bearings 31 a, 31 b.
  • a pin 35 is provided which fixes the position of these elements relative to each other.
  • a particularly high longevity of these rigid Fixing the elements ensures each other, since this is additionally exposed in the region of the minimum stop by the arrangement of connecting screws 36 lower radial forces.
  • the connecting screws 36 for connection of the housing 2 to the bearing cap 19 are not distributed uniformly over the circumference of the bearing cap 19, as is known in the prior art. Instead, these are essentially in the area of
  • Relief bores 37a and 37b respectively connect the bearings of the

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 selon un premier aspect une pompe volumétrique (1) à volume de refoulement variable, en particulier une pompe à palettes à simple lève pour une direction assistée d'un véhicule automobile. Cette pompe comprend un carter (2) dans lequel sont montés un arbre entraîné (5) et un groupe de rotors, le groupe de rotors comprenant au moins un rotor (4). L'invention est caractérisée en ce que l'arbre entraîné (5) et le rotor (4) forment une seule pièce. Selon un deuxième aspect, l'invention concerne en outre une pompe volumétrique (1) à volume de refoulement variable, en particulier une pompe à palettes à simple lève pour une direction assistée d'un véhicule automobile, comprenant un carter (2) dans lequel sont montés un arbre entraîné (5) et un groupe de rotors. L'invention est caractérisée en ce que la pompe (1) est réalisée sous la forme d'une pompe de transmission, l'arbre entraîné (5) pouvant fournir un couple d'entraînement permettant en particulier d'entraîner un autre groupe (28).
PCT/EP2013/074698 2013-02-07 2013-11-26 Pompe volumétrique à volume de refoulement variable Ceased WO2014121862A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013201972.6 2013-02-07
DE102013201972.6A DE102013201972A1 (de) 2013-02-07 2013-02-07 Verdrängerpumpe mit variablem fördervolumen

Publications (1)

Publication Number Publication Date
WO2014121862A1 true WO2014121862A1 (fr) 2014-08-14

Family

ID=49681017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/074698 Ceased WO2014121862A1 (fr) 2013-02-07 2013-11-26 Pompe volumétrique à volume de refoulement variable

Country Status (2)

Country Link
DE (1) DE102013201972A1 (fr)
WO (1) WO2014121862A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015008501U1 (de) * 2015-12-10 2017-03-13 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Flügelzellenpumpe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010036411A1 (en) * 2000-02-15 2001-11-01 Walker Frank H. Reversible variable displacement hydraulic pump and motor
WO2004072444A1 (fr) * 2003-02-14 2004-08-26 Luk Automobiltechnik Gmbh & Co. Kg Ensemble de pompes
WO2007098595A1 (fr) * 2006-03-01 2007-09-07 Magna Powertrain Inc. Pompe a palettes a diametre de rotor reduit
DE102010022677A1 (de) * 2010-06-04 2011-12-08 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Flügelzellenpumpe
DE102012201615A1 (de) * 2011-07-19 2013-01-24 Slw Automotive Inc. variable kombinierte Öl-Vakuum-Verdrängerpumpe

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Publication number Priority date Publication date Assignee Title
IT1167695B (it) * 1983-12-23 1987-05-13 Atos Oleodinamica Spa Pompa volumetrica a palette a cilindrata variabile per azionamento fluidoidraulico
JP2000087877A (ja) 1998-09-10 2000-03-28 Bosch Braking Systems Co Ltd 可変容量形ポンプ
US6468044B1 (en) 2000-06-15 2002-10-22 Visteon Global Technologies, Inc. Variable displacement pump
DE10117373A1 (de) * 2001-04-06 2002-10-10 Mannesmann Rexroth Ag Hydraulisches Pumpenaggregat
DE10240499A1 (de) 2002-09-03 2004-03-11 Zf Lenksysteme Gmbh Einhubige Flügelzellenpumpe
DE102005043253B4 (de) * 2005-09-09 2014-09-04 Zf Lenksysteme Gmbh Verfahren zum Herstellen einer Verdrängerpumpe und eine danach hergestellte Verdrängerpumpe
DE102011089409A1 (de) * 2011-12-21 2013-06-27 Robert Bosch Gmbh Pumpe, insbesondere Kraftstoffhochdruckpumpe für eine Kraftstoffeinspritzeinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010036411A1 (en) * 2000-02-15 2001-11-01 Walker Frank H. Reversible variable displacement hydraulic pump and motor
WO2004072444A1 (fr) * 2003-02-14 2004-08-26 Luk Automobiltechnik Gmbh & Co. Kg Ensemble de pompes
WO2007098595A1 (fr) * 2006-03-01 2007-09-07 Magna Powertrain Inc. Pompe a palettes a diametre de rotor reduit
DE102010022677A1 (de) * 2010-06-04 2011-12-08 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Flügelzellenpumpe
DE102012201615A1 (de) * 2011-07-19 2013-01-24 Slw Automotive Inc. variable kombinierte Öl-Vakuum-Verdrängerpumpe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015008501U1 (de) * 2015-12-10 2017-03-13 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Flügelzellenpumpe

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