WO2020161116A1 - Pompe à engrenage - Google Patents

Pompe à engrenage Download PDF

Info

Publication number
WO2020161116A1
WO2020161116A1 PCT/EP2020/052714 EP2020052714W WO2020161116A1 WO 2020161116 A1 WO2020161116 A1 WO 2020161116A1 EP 2020052714 W EP2020052714 W EP 2020052714W WO 2020161116 A1 WO2020161116 A1 WO 2020161116A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
gear pump
composite material
pump
axial
Prior art date
Application number
PCT/EP2020/052714
Other languages
German (de)
English (en)
Inventor
Thomas Wahl
Original Assignee
Schwäbische Hüttenwerke Automotive 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 Schwäbische Hüttenwerke Automotive GmbH filed Critical Schwäbische Hüttenwerke Automotive GmbH
Publication of WO2020161116A1 publication Critical patent/WO2020161116A1/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
    • 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
    • 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
    • F01C21/102—Adjustment of the interstices between moving and fixed parts of the machine by means other than fluid pressure
    • 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
    • F04C15/008—Prime movers
    • 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
    • F04C2/102—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 the two members rotating simultaneously around their respective axes
    • 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
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0069—Magnetic couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/04—PTFE [PolyTetraFluorEthylene]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/06—Polyamides, e.g. NYLON
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/08—Thermoplastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/12—Magnetic properties

Definitions

  • the invention relates to a gear pump for delivering a fluid in a motor vehicle, with a pump housing, which has a first fluid connection and a second
  • a first gearwheel and at least one second gearwheel are arranged in the pump housing and together form a fluid for conveying a fluid
  • the first gear and / or the second gear and / or a component connected to the first gear and / or a component connected to the second gear is / are formed from a magnetized composite material.
  • the invention relates to a gear pump with a pump housing that has a first fluid connection and a second fluid connection, a first gear and at least one second gear, which are arranged in the pump housing and together form feed cells for conveying a fluid.
  • the gear pump has a component firmly connected to the first gear and / or a component firmly connected to the second gear. The component connected to the gear is
  • the component can additionally or alternatively to
  • the component can be formed separately from the gear or in one piece with the gear.
  • the respective gear advantageously forms the component in one piece.
  • “One-piece” is to be understood as meaning, in particular, a design made of the same material and / or in or from one piece and, in particular, a common design or shaping in a manufacturing process, for example in a casting, sintering, 3D printing or
  • the first gear and / or the second gear and / or the component connected to the first gear and / or the component connected to the second gear are formed from a magnetized composite material.
  • the magnetized composite material preferably has at least one carrier material in which a component material is embedded, the carrier material and / or the component material being magnetized.
  • the carrier material and the component material preferably consist of different materials.
  • the component material is advantageously embedded in the carrier material in the form of plates, disks, layers, coatings, tubes, rods, spheres, particles, powder, fibers, etc.
  • the component material is at least substantially and particularly advantageously completely surrounded or received by the carrier material, with areas of the on the surface of the composite material
  • Component material can also stand free.
  • the magnetized composite material is advantageously a particle composite material.
  • the component material of the particle composite material is preferably embedded in the carrier material in the form of particles and / or in the form of powder.
  • the magnetized composite material can be a fiber composite material, a rod composite material, a layer composite material or the like.
  • the composite material can form a plastic-bonded magnet, that is to say that the part or parts made from the composite material are preferably plastic-bonded magnets.
  • it can be injection-molded or pressed plastic-bonded
  • a composite material is formed as a layer composite material, this means that the composite material comprises at least a first and a second layer of component material, each of the at least two layers being embedded in the carrier material.
  • the first layer can lie directly on the second layer or the first layer can be separated from the second layer by a separating layer, preferably by a
  • Carrier material layer be separated.
  • the first layer of component material and the second layer of component material can be formed from the same material or an identical material mix or from a different material or different materials.
  • the component material as a layer material can for example be designed as a film or plate.
  • the flanks of the first layer and the second layer can be open to the environment or also from the separating or
  • the separating material can be magnetized, non-magnetized, magnetizable or non-magnetizable. That made the composite material At least one first and at least one second layer what has been said also applies to laminated composites that have three, four, ..., eight, nine, ten or more layers.
  • the magnetized composite material is particularly advantageously formed from a non-magnetized carrier material in which magnetized particles are embedded and / or magnetized powder is embedded.
  • the carrier material is preferably a plastic or a resin, in particular synthetic resin.
  • the magnetized composite material is advantageously a plastic-bonded magnet.
  • the composite material can in particular by
  • the plastic can for example be a thermoplastic, such as polyamide, polyphenylene sulfide, or nylon, POM, ABS, PU, PP, PE, PTFE, UHMWPE, HDPE, LDPE, PVC, etc.
  • the plastic can also be a thermosetting plastic, such as epoxy resin be.
  • the magnetized particles / powder can be magnetized soft iron particles / soft iron powder or hard ferrite particles / hard ferrite powder, for example.
  • the soft iron can be an unalloyed iron with a high degree of purity, which is sometimes indistinctly referred to as magnetic iron.
  • the gear pump is intended to deliver a fluid.
  • the delivered fluid can be a lubricant and / or coolant or an actuating agent.
  • the gear pump is provided for a motor vehicle, which, for example, the fluid for lubricating and / or cooling a drive motor of the motor vehicle or for actuating a transmission of the
  • neither the first gear nor the second gear comprises a connecting member with which it can be mechanically connected to a drive such as a motor, in particular an electric motor, or the crankshaft of an internal combustion engine.
  • a drive such as a motor, in particular an electric motor, or the crankshaft of an internal combustion engine.
  • the housing preferably does not have an opening through which a drive unit can be connected to the first or the second gear.
  • the gear pump can be a switchable pump, i.e. a pump in which the pumping direction can be reversed so that the first fluid connection can form an inlet that guides the fluid into or into a pump chamber or the delivery cells of the gear pump Outlet through which the fluid emerges from the pump chamber or the delivery cells.
  • the second fluid connection which can correspondingly also form an inlet or an outlet, depending on the direction of rotation of the pump or counterclockwise.
  • the gear pump advantageously has a component which is connected to the first gear and is formed from the magnetized composite material.
  • the component is advantageously designed in one piece with the first gear.
  • the first gear and the component connected to the first gear advantageously consist of the same material.
  • the first gear wheel and the component connected to the first gear wheel are preferably formed in or from one piece.
  • the first gear wheel and the component connected to the first gear wheel are advantageously formed together in a manufacturing process, for example in a casting, sintering or injection molding process, or manufactured / shaped from a single blank.
  • the first gear forms the component connected to the first gear integrally.
  • the first gear and the component connected to the first gear are preferably formed entirely from the magnetized composite material.
  • the component connected to the first gear is preferably designed as a drive element and is thus provided for the electrical rotary drive of the first gear in order to convey fluid in the pump chamber from the suction side to the pressure side. Additionally or alternatively, the component connected to the first gear can be designed as a bearing element for the rotary bearing of the first gear and / or as a centering element for centering the first gear.
  • the gear pump preferably has at least one axial sealing gap and an axial gap compensation device which, at least in one operating state, generates or provides an axially directed magnetic force on the magnetized composite material to reduce the axial sealing gap.
  • the axial sealing gap is advantageously formed radially between the pump chamber or the delivery cells and a rotary bearing of a gear.
  • the axial sealing gap preferably seals the delivery cells, which form the gearwheels with one another, from at least one pivot bearing.
  • the axial sealing gap is advantageously formed axially between the pump housing and the first gear, the axially directed magnetic force pushing and / or pulling the first gear axially in the direction of the axial sealing gap.
  • the axial sealing gap is preferably formed on the first gear and is therefore axially delimited by the first gear.
  • the axial sealing gap is advantageously formed on the first gear and is therefore axially delimited by the first gear.
  • the axial sealing gap is formed on the pump housing and is thus axially limited by the pump housing.
  • the axial sealing gap can additionally or alternatively be formed on a plate arranged between the first gear wheel and the pump housing and thus delimited by the plate.
  • the term “axial” is particularly related to the axis of rotation of the first gear and / or the second gear, so that the term “axial” is a Denotes direction which runs on the axis of rotation or parallel to this.
  • the term “radial” relates in particular to the axis of rotation of the first gearwheel and / or the second gearwheel, so that the expression “radial” denotes a direction that is perpendicular to the axis of rotation.
  • the gear pump can furthermore comprise a magnetic device which generates or provides a magnetic force acting on the magnetized composite material and thus on the first gear and / or the component connected to the first gear.
  • the magnetic device is preferably designed as an electrical coil.
  • Magnetic device can be included in the gear pump or connected to the gear pump.
  • the magnetic device can be arranged inside the pump housing, or arranged outside the pump housing and connected or connectable to the pump housing.
  • the magnetic device preferably at least partially forms the
  • Axial gap compensation device The magnetic device or that of the
  • Magnetic device generated or provided magnetic field generates or provides the axially directed magnetic force acting on the magnetized composite material, in particular on the component connected to the first gear, to reduce the axial sealing gap (s), whereby the first gear is axially in the direction of the axial
  • the component connected to the first gear is preferably designed as a compensation element and thus for
  • Axial gap compensation of the axial sealing gap or the axial sealing gap provided.
  • the first gear Due to the axial force generated or provided by the magnetic device and acting on the component connected to the first gear, the first gear is pressed or pulled in the direction of the axial sealing gap against the pump housing or the plate, whereby the axial sealing gap can be set or reduced. As a result, a uniform axial gap can be set up, which is very stable when the magnetic force acts on the component connected to the first gearwheel.
  • the axial sealing gap is formed in particular between an end face of the first gearwheel facing the fluid connections and an inner wall of the pump housing or plate opposite the end wall.
  • the magnetic device preferably forms at least partially an electrical one
  • the magnetic device or the magnetic field generated or provided by the magnetic device generates or sets the magnetized field Composite material, in particular on the component connected to the first gear, ready to rotate, whereby the first gear is driven to convey the fluid about the axis of rotation.
  • the component connected to the first gear is preferably connected / coupled or connectable / coupled to the pump drive, in particular to the electrical coil.
  • the gear pump is preferably designed as an electrically driven gear pump.
  • the magnetic field provided preferably acts on the component connected to the first gear.
  • the component connected to the first gear advantageously partially forms the axial gap compensation device and at least partially the electric pump drive.
  • the component connected to the first gearwheel preferably has a bottom of the pump chamber and / or the delivery cells.
  • the bottom is preferably designed in the form of a disk.
  • the bottom is preferably formed in one piece with the component that is firmly connected to the first gear.
  • the first gear, the base and the component connected to the first gear are formed in one piece.
  • the component connected to the first gear is preferably designed as a base element and is thus provided for the axial delimitation of the pump chamber and / or the delivery cells.
  • the gear pump is designed in particular as an internal gear pump.
  • the first gear is preferably designed as an external gear and the second gear as an internal gear.
  • the first gear wheel advantageously has internal teeth and the second gear wheel has external teeth.
  • the pump housing can be formed at least from a first part or pump housing cover and a second part or pump housing body.
  • the pump housing can also consist of more than the first and the second part, for example from the first part, the second part, a third part, a fourth part, etc.
  • the pump housing cover and the pump housing body can be mentioned, regardless of the total number of pump housing parts.
  • the pump housing cover can accommodate the gears.
  • the two gears can alternatively be received by the pump housing body or by the pump housing body and the pump housing cover.
  • the component connected to the first gear can simultaneously form the drive element, the centering element, the bearing element, the compensation element and the base element.
  • the component connected to the first gear can also only comprise one of the drive element, centering element, bearing element, compensation element and
  • the component connected to the first gear can preferably protrude vertically downward from an underside of the first gear facing away from the second gear or the pump housing cover and, for example, into a recess in the
  • the component connected to the first gear can be designed in the shape of a ring or consist of several partial ring segments spaced apart in the circumferential direction of the first gear.
  • the ring or the partial ring segments which / which form the component connected to the first gearwheel is / are circular or are segments of a circle.
  • An axial length of the circle segments can be the same or different, the width of the circle segments in the circumferential direction can also be the same or vary, as can a distance between two circle segments following one another in the circumferential direction.
  • the component connected to the first gear engages, for example, in an annular groove which is preferably formed in or through the pump housing body.
  • the annular groove forms a guide for the component connected to the first gear and advantageously a pivot bearing, in particular when the first gear is the driven gear of the gear pump.
  • the first gear is advantageously designed in the shape of a pot.
  • the first gearwheel and the bottom preferably together form a cup-shaped pump chamber which is open on one side and into which the second gearwheel projects or is arranged.
  • the first gear and the bottom are advantageously made of the same material.
  • the first gear and the bottom are preferably formed in or from one piece.
  • the first gear and the base are advantageously formed together in one manufacturing process, for example in a casting, Sintering, 3D printing or injection molding or manufactured / molded from a single blank.
  • the first gear integrally forms the base.
  • the second gear wheel is preferably arranged in the pump chamber, so that the teeth of the second gear wheel together with the teeth of the first gear wheel form the delivery cells for transporting the fluid through the pump chamber.
  • the first gear is preferably designed in the shape of a double pot.
  • the first gear is advantageously designed in a pot-shaped manner on both of its axial sides.
  • the first axial side or end face of the first gear forms a first cup space, which is provided for receiving the second gear, and the second axial side or end face of the first gear forms a second cup space with preferably a cup rim that extends axially, which is used for the rotary drive and / or for rotary mounting and / or for centering and / or for
  • Axial gap compensation is provided.
  • the component connected to the first gear preferably forms the second pot space of the first gear.
  • the base or the base element is advantageously arranged axially between the toothing of the first gear and the drive element and / or the centering element and / or the bearing element and / or the compensation element.
  • the base or the base element is advantageously arranged axially between the two pot spaces.
  • the base or the base element preferably separates the two pot spaces spatially and / or hydraulically from one another.
  • the axial gap compensation device can furthermore comprise a magnetically effective plate which, to reduce the axial sealing gap, interacts magnetically with the magnetized composite material, in particular with the first gear.
  • the magnetized composite material, in particular the first gearwheel preferably pulls or presses the magnetically effective plate in the direction of the axial sealing gap.
  • the composite material, in particular the first gearwheel advantageously pulls to reduce the axial
  • the plate magnetically or repels the plate magnetically.
  • the magnetically effective plate pulls or pushes the magnetized one
  • Composite material in particular the first gear, in the direction of the axial sealing gap.
  • the axial sealing gap is preferably formed between the magnetically active plate and the first gear.
  • the magnetically effective plate is arranged in the pump housing, preferably in the pump housing cover.
  • the magnetically effective plate can be at least non-rotatably, in particular loss-proof, or in the pump housing be movably arranged.
  • the plate can preferably rotate with the first gear.
  • the magnetically effective plate is advantageously designed as a metal plate.
  • the magnetized composite material, in particular the first gearwheel, preferably attracts the metal plate magnetically.
  • An outer diameter of the magnetically effective plate can be substantially as large as an outer diameter of the first gear.
  • the outside diameter of the magnetically active plate can alternatively be larger, less preferably also smaller, than the outside diameter of the first gear wheel.
  • the magnetically active plate preferably forms the axial sealing gap with the face of the first gear facing away from the bottom.
  • the axial sealing gap preferably seals the delivery cells, which form the gearwheels with one another, from at least one pivot bearing.
  • Fluid connection fluidly connects to the pump chamber, and a second opening which connects the second fluid connection to the pump chamber.
  • the first opening and the second opening can be shaped identically.
  • the second gear can comprise a bearing journal which protrudes essentially perpendicularly from an end face of the second gear facing away from the first gear or the component connected to the first gear.
  • the magnetically effective plate can include a third opening and this third opening, which is formed radially between the first opening and the second opening in the magnetically effective plate, can be penetrated by the bearing journal of the second gear.
  • a diameter of the third opening can essentially correspond to an outer diameter of the bearing journal.
  • the second gear wheel can have an axial through opening or through hole.
  • the base which is formed, for example, by the component connected to the first gearwheel, can also have an opening or through-opening. If the second gear and the base each have the through-opening, the through-openings can at least partially overlap.
  • the end face of the first gear wheel facing the pump housing cover is opposite, a circumferential groove can be formed.
  • the groove preferably interrupts the axial sealing gap.
  • This groove has a width in the radial direction which is smaller than a width of the first gear.
  • the width of the groove is preferably smaller than a distance between a radial outer wall of the first gear and the tooth roots of the teeth of the first gear, so that the groove does not extend into the gaps between the teeth of the gear rim of the first gear.
  • the groove in the pump housing can be formed in a radially outer region of the inner wall, for example of the housing cover, and can extend radially in the direction of an axis of rotation of the gear pump or the axis of rotation of the gear wheels.
  • the groove serves in particular to reduce a contact area between the end wall of the first gear wheel and the inside of the pump housing. This advantageously reduces the adhesive forces between the pump housing cover and the one facing it
  • the second gear of the gear pump can comprise a first axis of rotation or central axis.
  • the first gear of the gear pump can comprise a second axis of rotation or a central axis.
  • the first axis of rotation and the second axis of rotation can run parallel to one another at a distance from one another.
  • the gear pump can comprise a lubricant supply that has a
  • Lubricant guides from the fluid connection designed as an outlet through one or more rotary bearings to the fluid connection designed as an inlet.
  • the lubricant can in particular be the fluid delivered by the gear pump, for example an oil, lubricating oil, lubricant, coolant, cooling water, etc.
  • Lubricant guide defines a lubricant path which leads from the first fluid connection to the second fluid connection in a first direction of rotation of the gear pump, and from the second fluid connection to the first fluid connection in a second direction of rotation of the gear pump.
  • the through openings in the second gear and in the base form parts of the
  • Lubricant supply or the lubricant path regardless of the direction of rotation of the gear pump.
  • Other parts of the lubricant supply form, for example, grooves in the pump housing in the first gear, the second gear and possibly the
  • the base and / or the magnetically effective plate can also have one or more grooves which form parts of the lubricant feed.
  • Rotary bearings for the first gearwheel, the second gearwheel and the centering can be formed in the pump housing. So a pivot bearing for the second gear of one
  • a rotary bearing can be formed opposite inner wall of the pump housing.
  • a rotary bearing can be formed by a radial outer side of the first gear wheel and an inner wall of the pump housing opposite the radial outer side.
  • a rotary bearing can be formed by a radial inner and / or outer side of the component connected to the first gearwheel and at least one inner wall of the pump housing opposite the inner or outer side.
  • the gear pump can also form one or more axial gaps.
  • An axial gap can be formed by an end face of the first gearwheel facing the first and second fluid connection and an inner wall of the pump housing opposite the end face.
  • An axial gap can be formed by an end face of the second gear wheel facing away from the first and second fluid connection and an inner wall of the pump housing opposite the end face.
  • An axial gap can be formed between a surface of the base facing away from the second gearwheel, which for example forms the component connected to the first gearwheel, and an inner wall of the pump housing opposite the surface.
  • the axial gaps can form axial sealing gaps.
  • An axial gap, in particular an axial sealing gap, in the gear pump with the magnetically active plate can be formed by the upper side of the magnetically active plate facing the first and second gearwheel and the end face of the first and second gearwheel facing the magnetically active plate, the magnetized composite material , in particular the first gear, which attracts the magnetically active plate and can thereby move the magnetically active plate relative to the first gear linearly in the axial direction, whereby an axial adjustment or axial gap compensation of one or more of the axial gaps can be effected.
  • the magnetized or magnetizable composite material can be magnetized in such a way that the pump drive, in particular the electrical coil, the first gear, which at least partially consists of the composite material, and / or the component connected to the first gear, which at least partially consists of the composite material, can be driven in rotation.
  • the pump drive in particular the electrical coil
  • the first gear and / or the one with the first gear connected component are driven in a first direction of rotation or in a second direction of rotation.
  • the magnetized or magnetizable composite material can be of the type
  • the pump drive in particular the electrical coil
  • the first gear which at least partially consists of the composite material, and / or the component connected to the first gear, which at least
  • Sealing gap is pressed or pulled, whereby a magnetic axial compensation of the sealing gap takes place.
  • the magnetic axial compensation can also be done by
  • the axial gap compensation device can have one or more permanent magnets.
  • the magnetized or magnetizable composite material can be magnetized in such a way that the pump drive, in particular the electrical coil, the first gear, which at least partially consists of the composite, and / or the component connected to the first gear, which at least
  • the pump housing can be magnetically centered.
  • the magnetic centering can also be adjusted by permanent magnets.
  • the composite material preferably comprises a matrix made of at least one carrier material.
  • the carrier material can be a metal or plastic, consist of several plastics, an alloy or of metal and plastic.
  • the carrier material is preferably a non-magnetized or only weakly magnetized or
  • the component material is different from the
  • the component material is incorporated in the matrix in an essentially uniformly distributed manner, so that the composite material has essentially the same properties in each partial volume.
  • the even distribution relates primarily to the quantitative distribution of the
  • Component material in the carrier material that does not have to follow a regular distribution order.
  • the first gear is preferably in one piece.
  • the first gear advantageously comprises an internal toothing and a radial outer surface for forming a pivot bearing.
  • the first gear additionally comprises the component, for example the base or the base element and / or the drive element and / or the bearing element and / or the centering element and / or the compensation element.
  • the second gear is preferably in one piece.
  • the second gear advantageously includes external teeth and a radial external surface for forming a pivot bearing.
  • Delivery of a fluid is provided and arranged in the pump housing.
  • Carrier material in which magnetizable or magnetized particles and / or
  • magnetizable or magnetized powder are embedded / is formed.
  • Aspect # 4 Gear pump according to aspect # 3, wherein the carrier material is a thermoplastic or an elastomer or a resin, in particular synthetic resin.
  • Aspect # 5 Gear pump according to aspect # 3 or 4, wherein the particles as
  • Soft iron particles or hard ferrite particles are formed.
  • Aspect # 6 The gear pump according to any one of Aspects # 2 to # 5, wherein the first gear and the drive member are integrally formed from the composite material.
  • Aspect # 7 Gear pump at least according to Aspect # 2, characterized by a
  • Magnetic device that generates a magnetic force acting on the drive element.
  • Gear form at least one axial sealing gap and the magnetic device generates or provides an axial force acting on the first gear and / or the drive element, which presses or pulls the first gear in the direction of the axial sealing gap against the pump housing.
  • Aspect # 9 The gear pump according to aspect # 7 or 8, wherein the magnetic device generates a rotating force acting on the drive element, which drives the first gear to convey the fluid.
  • Aspect # 10 The gear pump of Aspect # 7, 8, or 9, wherein the magnet device is an electric coil.
  • Aspect # 11 Gear pump according to one of the preceding aspects #, characterized by being designed as an internal gear pump.
  • Aspect # 12 Gear pump according to any of the preceding Aspects #, wherein the first
  • Gear are designed as an external gear and the second gear as an internal gear.
  • Aspect # 13 Gear pump according to one of the preceding aspects #, wherein the
  • Aspect # 14 The gear pump of Aspect # 13, wherein the pump housing cover is the first
  • Aspect # 15 Gear pump according to any of the preceding Aspects #, wherein the first
  • Gear comprises a centering element.
  • Aspect # 16 Gear pump according to aspect # 15, wherein the centering element preferably projects vertically downward from an underside of the first gear facing away from the second gear.
  • Aspect # 17 Gear pump according to aspect # 15 or 16, wherein the centering element is circular or consists of a plurality of partial circle segments spaced apart in the circumferential direction of the first gear.
  • Aspect # 18 Gear pump according to one of Aspects # 15, 16, 17, where the
  • Centering element is mounted in the pump housing body.
  • Aspect # 19 Gear pump according to at least aspect # 15, wherein the first gear and the centering element are firmly connected to one another.
  • Aspect # 20 Gear pump according to at least aspect # 15, wherein the first gear and the centering element are formed in one piece from the composite material.
  • Aspect # 21 Gear pump according to one of the preceding aspects #, characterized by a base which is firmly connected to the first gear, the base preferably being arranged between the first gear and the drive element and / or between the first gear and the centering element.
  • Aspect # 22 The gear pump according to aspect # 21, wherein the first gear, the base and the centering element are firmly connected to one another.
  • Aspect # 23 The gear pump of aspect # 21 or 22, wherein the first gear, the
  • the bottom and the centering element are formed in one piece from the composite material.
  • Aspect # 24 Gear pump according to aspect # 21, 22 or 23, wherein the first gear, the base, the centering element and the drive element are made in one piece from the
  • Aspect # 25 Gear pump according to any one of the preceding Aspects #, wherein the first
  • Aspect # 26 Gear pump according to at least aspect # 21, wherein the bottom forms a bottom of the first gear.
  • Aspect # 27 Gear pump according to one of the preceding aspects #, wherein the
  • Gear pump comprises a magnetically effective plate, in particular a metal plate.
  • Aspect # 28 Gear pump according to at least aspects # 13 and 27, wherein the plate in
  • Pump housing cover is arranged.
  • Aspect # 29 Gear pump according to at least aspects # 13 and 27, wherein the plate is rotatably connected to the pump housing cover or is rotatably connected.
  • Aspect # 30 Gear pump according to at least aspect # 27, wherein the plate has a
  • Aspect # 31 Gear pump according to at least aspect # 27, wherein the plate or one of the
  • Plate also formed axial sealing gap seals an end face of the first gear facing away from the bottom.
  • Aspect # 32 Gear pump at least according to aspect # 27, wherein the plate seals delivery cells, which form the first gear and the second gear in the pump space, with respect to the housing, in particular with respect to at least one rotary bearing.
  • Aspect # 33 Gear pump according to at least aspect # 27, wherein the plate has a first
  • Aspect # 34 The gear pump of aspect # 33, wherein the first port and the second
  • Opening are shaped identically.
  • Aspect # 35 Gear pump according to any one of the preceding Aspects #, the second
  • Gear comprises a bearing journal which protrudes at least substantially perpendicularly from an end face of the second gear facing away from the first gear.
  • Aspect # 36 Gear pump according to at least aspect # 33, wherein the plate is a third
  • Aspect # 37 The gear pump of aspect # 36, wherein the third opening is formed radially between the first opening and the second opening in the plate.
  • Aspect # 38 The gear pump of aspect # 36 or 37, wherein the journal of the second
  • Aspect # 39 Gear pump according to at least aspect # 36, wherein a diameter of the third opening corresponds at least substantially to an outer diameter of the bearing journal.
  • Aspect # 40 Gear pump according to any one of the preceding Aspects #, wherein the second
  • Gear has an axial through opening.
  • Aspect # 41 Gear pump according to at least aspect # 21, wherein the bottom has an opening.
  • Aspect # 42 Gear pump according to Aspect # 40 and 41, wherein the through opening in the second gear and the opening in the bottom at least partially overlap.
  • Aspect # 43 Gear pump at least according to aspect # 13 or 27, wherein in an inner wall of the pump housing cover, preferably the end face of the first gear facing the pump housing cover, and / or in an inner wall of the plate, preferably the end face of the first gear facing one of the plate Gear opposite, at least one pocket, preferably a circumferential groove, is formed to reduce friction.
  • Aspect # 45 The gear pump according to aspect # 43 or 44, wherein the pocket is formed in a radially outer portion of the inner wall and extends radially toward an axis of rotation of the gear pump.
  • Aspect # 46 Gear pump according to one of the preceding Aspects #, wherein the
  • Gear pump is provided for a forward and a reverse operation.
  • Aspect # 47 Gear pump according to one of the preceding aspects #, characterized by a lubricant supply which, in a first direction of rotation and in a second direction of rotation opposite to the first direction of rotation, a fluid flow between the
  • Aspect # 48 Gear pump at least according to Aspects # 40, 41, 47, wherein the
  • Through-opening in the second gear and the opening in the base at least partially form the lubricant feed.
  • Aspect # 49 Gear pump according to aspect # 47, characterized by at least one groove in the pump housing and / or in the bottom which at least partially form the lubricant feed.
  • Aspect # 50 Gear pump according to at least aspect # 47, wherein a rotary bearing of a
  • Outer peripheral surface of the journal is formed on the second gear and an inner wall of the pump housing opposite the journal.
  • Aspect # 51 Gear pump according to at least aspect # 47, wherein a rotary bearing is formed from a radially outer side of the first gear and one of the radially outer side
  • Aspect # 52 Gear pump at least according to aspect # 47, wherein a rotary bearing of a radially inner and / or outer side of the centering element and / or the drive element and an inner wall of the opposite inner and / or outer side
  • Aspect # 53 Gear pump according to one of the preceding aspects #, wherein the
  • Gear pump has one or more axial gaps, in particular sealing gaps.
  • Aspect # 54 Gear pump according to aspect # 53, wherein an axial gap is formed by an end face of the first gear wheel facing the first and second fluid connection and an inner wall of the pump housing opposite the end face or an inner wall of the plate opposite the end face.
  • Aspect # 55 Gear pump according to aspect # 53 or 54, an axial gap being formed by an end face of the first gear wheel facing away from the first and second fluid connection and an inner wall of the pump housing opposite the end face or an inner wall of the plate opposite the end face.
  • Aspect # 56 Gear pump according to aspect # 53, 54 or 55, wherein an axial gap is formed between a surface of the bottom facing away from the second gear and an inner wall of the pump housing opposite the surface.
  • Aspect # 57 Gear pump at least according to Aspect # 2 and 27, wherein the first gear pulls the plate and thereby effects an axial gap compensation.
  • Aspect # 58 Gear pump according to one of the preceding aspects #, characterized by at least one axial sealing gap and a magnetic one
  • Axial gap compensation device that generates an axially directed magnetic force to reduce the axial sealing gap.
  • Aspect # 59 Gear pump according to aspect # 58, wherein the axially directed magnetic force pulls and / or pushes at least the first gear in the direction of the axial sealing gap.
  • Aspect # 60 Gear pump according to aspect # 58 or 59, wherein the
  • Axial gap compensation device has at least one magnetizable or magnetized component that is permanently connected to the first gear and / or is formed in one piece with the first gear.
  • Aspect # 61 Gear pump according to aspect # 60, wherein the component is a permanent magnet that is fixedly arranged on or in the first gear.
  • Aspect # 62 Gear pump according to aspect # 60, wherein the component is a magnetizable or magnetized composite material which is fixedly arranged on or in the first gear or is formed in one piece with the first gear.
  • Aspect # 63 Gear pump according to at least aspect # 60, wherein the
  • Axial gap compensation device has a magnetic device which generates or provides an axially directed magnetic force which pushes and / or pulls the first gear and / or the component in the direction of the axial sealing gap.
  • Aspect # 64 Gear pump according to aspect # 63, wherein the magnetic device has at least one electrical coil and / or at least one permanent magnet and / or at least one component formed from a magnetized composite material.
  • Aspect # 65 The gear pump according to aspect # 64, wherein the electric coil is provided in addition to rotationally driving the first gear.
  • Aspect # 66 Gear pump at least according to aspect # 58, wherein the
  • Axial gap compensation device has at least one metal plate that is magnetically attracted by the first gear and / or the component.
  • Figure 1 a gear pump in a first embodiment
  • FIG. 1 shows a first exemplary embodiment of a gear pump 1 according to FIG.
  • the gear pump 1 comprises a first fluid connection 21 and a second fluid connection 22.
  • the gear pump 1 is switchable
  • Gear pump that can be driven in a first direction of rotation or in a second direction of rotation that is opposite to the first direction of rotation.
  • the gear pump 1 is provided for forward operation and reverse operation.
  • the first fluid connection 21 is a fluid inlet or a fluid outlet.
  • the second fluid connection 22 correspondingly forms the fluid outlet or the fluid inlet of FIG.
  • a fluid passes through a pump chamber inlet into a pump chamber 3 and leaves the pump chamber 3 through a pump chamber outlet which is fluidly connected to the fluid outlet, i.e. depending on the direction of rotation with the first fluid connection 21 or the second fluid connection 22 .
  • the gear pump 1 comprises a pump housing or housing 2, with a
  • Housing cover 23 and a housing body 24 The housing cover 23 has the first fluid connection 21 and the second fluid connection 22.
  • a first gear or external gear 5 and a second gear or internal gear 4 are located in the housing cover 23 arranged.
  • the external gear 5 is connected or connectable or coupled or connectable to a pump drive.
  • the internal gear 4 is connected / can be connected or coupled / can be coupled to the pump drive.
  • the external gear 5 is designed in the shape of a double pot.
  • the external gear 5 has a pot space on its two end faces.
  • the internal gear 4 is arranged in the first pot space.
  • the housing body 24 protrudes into the second pot space.
  • the housing body 24 has a receptacle 25 which protrudes axially into the second pot space.
  • the external gear 5 forms in one piece a component 9 which fulfills several functions.
  • component 9 is provided for rotary drive or for connection / coupling with the pump drive, for rotary bearing, for centering, for axial gap compensation and for axially delimiting the pump chamber 3 and thus the delivery cells 3 '.
  • the component 9 forms a drive element, a centering element, a bearing element
  • the component 9 can also only be provided for part of the functions or only for one of the functions.
  • the component 9 is designed as a multifunctional component.
  • the component 9 surrounds the second cup space of the external gear 5 and the receptacle 25 of the housing body 24. It is arranged on the receptacle 25.
  • the component 9 is annular. It protrudes annularly from the lower end face of the external gear 5 and extends parallel to the axis of rotation of the external gear 5.
  • the component 9 forms a base 8 which axially delimits the pump chamber 3 and thus the delivery cells 3 '.
  • the bottom 8 is disc-shaped.
  • the bottom 8 forms an axial end wall of the pump chamber 3.
  • the internal gear 4 is arranged in the pump chamber 3, a rotation axis of the internal gear 4 and a rotation axis of the external gear 5 running parallel to one another, but not coinciding.
  • the internal gear 4 is mounted eccentrically in the pump chamber 3.
  • External gear 5 and internal gear 4 are in mesh with one another and form delivery cells 3 'which transport the fluid from the pump chamber inlet to the pump chamber outlet and thus from the fluid inlet to the fluid outlet. Because of the eccentric
  • the internal gear 4 has a central through opening 42, and a through opening 54 is formed in the base 8 of the external gear 5.
  • a substantially circumferential groove 7 is formed in the housing cover 23, the outer gear 5 in the area of the groove 7 with an upper end face not being able to rest against an inner wall of the housing, so that in this area there are no adhesive or frictional forces between the external gear 5 and the housing cover 23 can occur.
  • the gear pump 1 has an electric magnet device 6 as a pump drive.
  • the magnetic device 6 has a coil which, when energized, generates or provides a magnetic field.
  • the magnetic field acts on the component 9.
  • the magnetic device 6 surrounds the component 9.
  • the gear pump 1 is designed as an electric gear pump.
  • the magnetic device 6 is arranged on the outside of the housing body 24.
  • the external gear 5 is formed from a magnetized composite material.
  • the component 9 is thus also formed from the magnetized composite material.
  • the composite material consists of a non-magnetic carrier material, in this exemplary embodiment a plastic in which magnetized particles, for example soft iron particles, are embedded.
  • the external gear 5 is formed from a magnetized plastic. Magnetic and electrical properties can be set in a targeted manner through the proportion, shape and distribution of the magnetized particles in the carrier material.
  • the composite material and thus the external gear 5 or at least the component 9 are magnetized in such a way that the rotary drive and / or the axial gap compensation takes place through the interaction with the magnetic device 6.
  • the external gear 5 is formed by a plastic-bonded magnet.
  • the external gear 5 or at least the component 9 is magnetized in such a way that the external gear 5 can be driven in rotation by the magnetic device 6 or the magnetic field generated by the magnetic device 6.
  • the external gear 5 is driven in the first direction of rotation or in the second direction of rotation.
  • the magnetic device 6 generates a magnetic field or a rotational force which acts on the component 9 formed by the magnetized composite material.
  • the magnetized component 9 thereby forms a drive element via which the external gear 5 is driven in rotation.
  • the magnetic device 6 and the component 9 form the pump drive.
  • the external gear 5 or at least the component 9 is magnetized in such a way that the external gear 5 is axially opposed to at least one axial sealing gap S1 in the by the magnetic device 6 or the magnetic field generated by the magnetic device 6 Gear pump 1 is pushed or pushed.
  • the magnetic device 6 generates a magnetic field or an axial force which acts on the component 9 formed by the magnetized composite material.
  • the magnetized component 9 thereby forms a
  • the magnetic device 6 generates a magnetic field or an axial force on the component 9, which the external gear 5 axially against the housing 2 and in this
  • Embodiment presses against the housing cover 23.
  • the magnetic device 6 and the component 9 form a magnetic axial gap compensation device for reducing at least the axial sealing gap S1.
  • the axial sealing gap S1 is formed between an inside of the housing cover 23 facing the external gear 5 and an end face of the external gear 5 facing the housing cover 23.
  • the external gear 5 is pressed axially in the direction of the housing cover 23, as a result of which the axial width of the sealing gap S1 and / or an axial compensation of the sealing gap S1 takes place.
  • Gear pump 1 has further axial sealing gaps S2, S3.
  • the axial sealing gap S2 is formed between an inner side of the housing cover 23 facing the internal gear 4 and an end face of the internal gear 4 facing the housing cover 23.
  • the axial sealing gap S3 is formed between an inside of the base 8 facing the internal gear 4 and an end face of the internal gear 4 facing the external gear 5.
  • the magnetic force of the magnetic device 6 also pushes the external gear 5 axially in the direction of the sealing gaps S2, S3, as a result of which an axial gap compensation of the sealing gaps S2, S3 can or takes place.
  • the external gear 5 or at least the component 9 is magnetized in such a way that the external gear 5 is magnetically centered or aligned to the pump housing 2 and / or to the internal gear 4 by the magnetic device 6 or the magnetic field generated by the magnetic device 6.
  • the magnetic device 6 generates a magnetic field or a centering force which acts on the component 9 formed by the magnetized composite material.
  • the magnetized component 9 thereby forms a centering element via which the external gear 5 is centered.
  • the magnetic device 6 and the component 9 form a magnetic centering device.
  • the gear pump 1 furthermore comprises a lubricant supply which, independently of the direction of rotation of the gear pump 1, sets a fluid flow which directs a lubricant, preferably the fluid to be pumped, through three axial pivot bearings D1, D2, D3. It stores the first pivot bearing D1 the internal gear 4 and the second pivot bearing D2 and third pivot bearing D3 the external gear 5.
  • the first pivot bearing D1 is by a radial
  • the second rotary bearing D2 is formed by a radial outer side of the external gear 5 and an inner surface of the housing cover 23 opposite the radial outer side.
  • the third pivot bearing D3 is formed by the component 9 and the receptacle 25, which engages in the component 9. The component 9 thereby forms a bearing element.
  • the lubricant supply has the through opening 42, the through opening 54 and several lubricant guide grooves, which are introduced for the targeted guidance of the fluid in the axial sealing gaps S1, S2, S3 and / or in radial sealing gaps or the pivot bearings D1, D2, D3.
  • the gear pump V of the second figure corresponds essentially to the gear pump 1 of FIG. 1.
  • the axial gap compensation device has a magnetically effective plate 12 which interacts magnetically with the external gear 5 formed from the magnetized composite material.
  • the magnetically effective plate 12 is axially between the housing 2 in this
  • Embodiment the housing cover 23 and the gears 4, 5 arranged.
  • the plate 12 contacts the housing 2 / the housing cover 23 and the gears 4, 5 directly.
  • the first sealing gap S1 is thereby formed between the plate 12 and the external gear 5 and the second sealing gap S2 between the plate 12 and the internal gear 4.
  • the plate 12 is firmly connected to the housing cover 23.
  • the plate 12 can also be arranged loosely and therefore rotatable and displaceable in the housing 2.
  • the magnetically effective plate 12 forms a compensation element which is provided for the axial gap compensation of the axial sealing gaps S1, S2, S3.
  • the external gear 5 formed from the magnetized composite material attracts the plate 12 magnetically.
  • the external gear 5 pulls the plate 12 axially against the sealing gaps S1, S2 or in the direction of the sealing gaps S1, S2.
  • the plate 12 when the plate 12 is firmly connected to the housing 2, the external gear 5 can be attracted by the plate 12.
  • the plate 12 pulls the external gear 5 axially into the sealing gaps S1, S2 or in the direction of the sealing gaps S1, S2.
  • the plate 12 has passages or openings which connect the fluid connections 21, 22 to the pump chamber 3.
  • the plate 12 is designed as a metal plate.
  • the plate 12 can also be designed as a magnetic plate that attracts or repels the external gear 5 for axial gap compensation. Furthermore, it is fundamentally conceivable for the housing 2 to be at least partially a magnetically active material and interacts magnetically with the composite material, in particular the external gear 5, for axial gap compensation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)

Abstract

L'invention concerne une pompe à engrenage comprenant un boîtier de pompe (2) qui comporte une première connexion de fluide (21) et une deuxième connexion de fluide (22), une première roue dentée (5) et au moins une deuxième roue dentée (4), qui sont disposés dans le boîtier de pompe (2) et qui forment des cellules de refoulement (3'). L'invention est caractérisée en ce que l'une au moins des roues dentées (5) et/ou au moins un composant (9) relié à l'une des roues dentées (5) est au moins partiellement formé à partir d'un matériau composite magnétisable ou magnétisé.
PCT/EP2020/052714 2019-02-04 2020-02-04 Pompe à engrenage WO2020161116A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019102744.6A DE102019102744A1 (de) 2019-02-04 2019-02-04 Zahnradpumpe
DE102019102744.6 2019-02-04

Publications (1)

Publication Number Publication Date
WO2020161116A1 true WO2020161116A1 (fr) 2020-08-13

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Application Number Title Priority Date Filing Date
PCT/EP2020/052714 WO2020161116A1 (fr) 2019-02-04 2020-02-04 Pompe à engrenage

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DE (1) DE102019102744A1 (fr)
WO (1) WO2020161116A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020131360A1 (de) 2020-11-26 2022-06-02 Fte Automotive Gmbh Fluidpumpe, insbesondere für eine Komponente eines Antriebsstrangs eines Kraftfahrzeugs

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE102006037177A1 (de) * 2006-08-09 2008-02-14 Robert Bosch Gmbh Innenzahnradpumpe
US20110129364A1 (en) * 2009-12-01 2011-06-02 Jtekt Corporation Electric pump and electric pump mounting structure
US8821138B2 (en) * 1998-07-31 2014-09-02 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006007554A1 (de) * 2006-02-16 2007-08-23 Hydraulik-Ring Gmbh Förderpumpe, insbesondere für Harnstoffwasserlösung als Abgasnachbehandlungsmedium
US10379082B2 (en) * 2016-12-15 2019-08-13 Caterpillar Inc. System for monitoring machine fluids by measuring fluctuations in a magnetic field

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8821138B2 (en) * 1998-07-31 2014-09-02 The Texas A&M University System Gerotor apparatus for a quasi-isothermal Brayton cycle engine
DE102006037177A1 (de) * 2006-08-09 2008-02-14 Robert Bosch Gmbh Innenzahnradpumpe
US20110129364A1 (en) * 2009-12-01 2011-06-02 Jtekt Corporation Electric pump and electric pump mounting structure

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