WO2019170217A1 - Pompe de lubrification à palettes de pendule variables - Google Patents

Pompe de lubrification à palettes de pendule variables Download PDF

Info

Publication number
WO2019170217A1
WO2019170217A1 PCT/EP2018/055350 EP2018055350W WO2019170217A1 WO 2019170217 A1 WO2019170217 A1 WO 2019170217A1 EP 2018055350 W EP2018055350 W EP 2018055350W WO 2019170217 A1 WO2019170217 A1 WO 2019170217A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
pendulum
ring
pendulum vane
force transfer
Prior art date
Application number
PCT/EP2018/055350
Other languages
English (en)
Inventor
Carmine Cuneo
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology Gmbh filed Critical Pierburg Pump Technology Gmbh
Priority to DE112018007222.3T priority Critical patent/DE112018007222T5/de
Priority to PCT/EP2018/055350 priority patent/WO2019170217A1/fr
Publication of WO2019170217A1 publication Critical patent/WO2019170217A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—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
    • F04C2/32—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 both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members
    • F04C2/332—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 both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members with vanes hinged to the outer member and reciprocating with respect to the inner member
    • F04C2/336—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 both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members with vanes hinged to the outer member and reciprocating with respect to the inner member and hinged to the inner member
    • 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
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • 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

Definitions

  • Variable pendulum vane lubricant pump The invention is directed to a variable pendulum vane lubricant pump for providing pressurized lubricant, for example, to an internal combustion engine.
  • a variable pendulum vane lubricant pump which is provided with a non-rotatable and radially shiftable control ring, a rotatable and radially shiftable rotor ring which rotates inside the control ring and with a rotatable and non-shiftable rotor hub which is co- rotatably connected to the pump rotor ring.
  • the rotational connection of the rotor ring with the rotor hub is provided by a plurality of pendulum vanes which co- rotate with the rotor ring and the rotor hub.
  • the pendulum vanes fluidical!y separate a plurality of rotating pumping compartments.
  • the pendulum vanes also work as driving means which transfer a rotational force or momentum from the rotor hub to the rotor ring.
  • the rotor hub is driven by a driving source and is, for example, mechanically driven by the internal combustion engine.
  • variable pendulum vane lubricant pump which is provided with radially slidable slider elements supporting the pendulum vanes within the rotor hub.
  • the pendulum vanes In both disclosed variable pendulum vane lubricant pumps, the pendulum vanes have two functions, namely a fluidic separation function and a force transfer function. The pendulum vanes are exposed to considerable mechanical wear which deteriorates the sealing quality and thereby deteriorates the fluidic efficiency of the lubricant pump. It Is an object of the invention to provide a variable pendulum vane lubricant pump with improved long-term fluidic efficiency.
  • variable pendulum vane lubricant pump with the features of claim 1.
  • variable pendulum vane lubricant pump is provided with a non-rotatable and radially shiftable control ring, a rotatable and radially shiftable rotor ring rotating within the shiftable control ring, and a rotatable and non-shiftable rotor hub being co- rotatab!y connected with the rotor ring and comprising a plurality of sliding chambers.
  • the control ring is shiftable with respect to the rotor hub to thereby vary the eccentricity of the rotor ring with respect to the rotor hub for controlling the displacement and, as a result, the pump performance.
  • the control ring can be shiftable strictly linear or can be provided pivotable so that the control ring is moved along an arch-like path.
  • variable pendulum vane lubricant pump is also provided with a plurality of slider elements being provided radially slidable within the rotor hub sliding chambers and a plurality of pendulum vanes co- rota ting with the rotor ring and the rotor hub and fluidically separating a plurality of rotating pumping compartments.
  • Each pendulum vane is pivotably hinged at the rotor ring and at a slider element.
  • the pendulum vanes fluidically separate the rotating pumping compartments from each other.
  • the pendulum vanes also transmit a rotational force between the rotor hub and the rotor ring.
  • the lubricant pump is gear-free so that no rotational force is transferred between the rotor hub and the rotor ring by an external gear.
  • the rotational force is transferred from the driven rotor hub to the rotor ring only by the pendulum vanes.
  • the slider elements are provided with a force transfer portion to provide a force transfer between the rotor hub and the pendulum vane.
  • the force transfer portion of the slider element is located circumferentially between the pendulum vane and a sidewall of the sliding chamber to allow an efficient transfer of the tangential rotational force and to avoid a direct contact between the pendulum vane and the rotor hub.
  • the rotational force is transferred from the rotor hub to the pendulum vane only via the slider element, i.e. the pendulum vanes do not get Into direct contact with the rotor hub.
  • the force transfer portion provides a large contact area between the slider element and the pendulum vane as well as between the slider element and the rotor hub during the force transfer so that the mechanical pressure affecting the pendulum vane as well as the mechanical pressure affecting the slider element is reduced.
  • the force transfer portion avoids any friction and rubbing of the pendulum vane at the side wall of the rotor hub sliding chamber. This significantly reduces the wear of the rotor vanes as well as of the slider elements and, as a result, improves the long-term fluidic efficiency of the lubricant pump.
  • the force transfer portion of the slider element is provided with a contact surface being in contact with the pendulum vane during the force transfer.
  • the contact surface is provided with an angle between 30° and 60° with respect to a longitudinal centerline of the corresponding sliding chamber, I.e. provided with an angle between 30° and 60° with respect to a sliding axis of the corresponding slider element.
  • each pendulum vane is provided with a contact nose to provide a force transfer between the pendulum vane and the rotor ring.
  • the contact nose is in contact with the rotor ring so that the contact area between the pendulum vane and the rotor is increased. This reduces the stress and, as a result, the wear of the pendulum vane.
  • the rotor ring is provided with a plurality of contact recesses, into which the contact nose of the pendulum vanes dives to contact a recess surface during the force transfer between the pendulum vane and the rotor ring. This further increases the contact area between the pendulum vane and the rotor ring.
  • the rotor hub is driving the rotor ring.
  • the rotor hub is preferably mechanically driven by an external device.
  • the rotor hub can be mechanically driven by an internal combustion engine via a gear or a belt.
  • figure 1 shows a radial section of a variable pendulum vane lubricant pump according to the invention
  • figure 2 shows an alternative pendulum vane and an alternative rotor ring according to the invention, wherein the pendulum vane is provided with a contact nose and the rotor ring Is provided with corresponding contact recesses.
  • Figure 1 shows a variable pendulum vane lubricant pump 10 providing pressurized lubricant to an internal combustion engine (not shown) and being mechanically driven by the engine. Alternatively, the lubricant pump 10 can be driven by an electric motor.
  • the lubricant pump 10 is provided with a static pump housing 12, a non- rotatable and radially shiftable control ring 14, and a pump rotor 16 rotating within the control ring 14.
  • the control ring 14 is supported shiftable strictly linear within the pump housing 12.
  • the shifting position of the control ring 14 is defined by the particular hydraulic pressures of two counteracting hydraulic chambers 18,20.
  • the rotating pump rotor 16 comprises a shiftable rotor ring 22 and a non- shiftable rotor hub 24.
  • the rotor ring 22 is rotatably supported within the control ring 14.
  • the shifting position of the rotor ring 22 and thereby the eccentricity of the rotor ring 22 with respect to the rotor hub 24 is defined by the shifting position of the control ring 14.
  • the rotor ring 22 can be shifted between a maximum eccentricity position and a minimum eccentricity position to vary the displacement and, as a result, the pump performance of the lubricant pump 10.
  • the non-shiftable rotor hub 24 is mechanically driven by the engine and is provided with five sliding chambers 26.
  • the sliding chambers 26 are provided equidistantly over the circumference of the rotor hub 24 and extend substantially in radial direction.
  • the rotor hub 24 is co-rotatably connected with the rotor ring 22 via five pendulum vanes 28.
  • the rotor hub 24 and the rotor ring 22 rotate in counterclockwise direction.
  • the pendulum vanes 28 are provided equidistantly over the circumference of the rotor ring 22.
  • the outer radial ends of the pendulum vanes 28 are pivotably but captively hinged at the rotor ring 22.
  • the inner radial ends of the five pendulum vanes 28 are pivotably but captively hinged at five slider elements 30, i.e, each rotor vane 28 is hinged at an individual slider element 30,
  • the slider elements 30 are supported radially shiftable within the sliding chambers 26 of the rotor hub 24,
  • the pendulum vanes 28 fluidlcally separate five rotating pumping compartments 32a-e.
  • the rotational force of the driven rotor hub 24 is transferred to the pendulum vanes 28 only via the slider elements 30, i.e. the pendulum vanes 28 do not get into direct contact with the rotor hub 24 during the force transfer.
  • the force is transferred mainly via a force transfer portion 34 of the slider elements 30 which, in the present embodiment, Is provided by a radially protruding nose of the slider element 30.
  • the force transfer portion 34 Is located circumferentially between the pendulum vane 28 and a side wall 36 of the sliding chamber 26,
  • the force transfer portion 34 is provided with a contact surface 38 which is in contact with the pendulum vane 28 during the force transfer.
  • the contact surface 38 is provided with an angle A between 30° and 60° with respect to a longitudinal centerline C of the corresponding sliding chamber 26.
  • Figure 2 shows an alternative pendulum vane 28' and a section of an alternative rotor ring 22' according to the invention.
  • the rotor ring 22' is provided with a plurality of contact recesses 40 corresponding to the number of pendulum vanes 28'.
  • the pendulum vanes 28' are provided with a contact nose 42 diving into the contact recess 40 and contacting a recess surface 44 during a force transfer between the pendulum vane 28' and the rotor ring 22'.

Landscapes

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

Abstract

L'invention concerne une pompe de lubrification à palettes de pendule variables (10) permettant de fournir un lubrifiant sous pression dotée d'un anneau de commande non rotatif et déplaçable radialement (14), d'un anneau de rotor rotatif et déplaçable radialement (22, 22') tournant à l'intérieur de l'anneau de commande déplaçable (14), d'un moyeu de rotor rotatif et non déplaçable (24) raccordé de manière conjointement rotative à l'anneau de rotor (22) et comprenant une pluralité de chambres coulissantes (26), d'une pluralité d'éléments de coulissement (30) pouvant coulisser radialement à l'intérieur des chambres coulissantes de moyeu de rotor (26), d'une pluralité de palettes de pendule (28, 28') conjointement rotatives avec l'anneau de rotor (22, 22') et le moyeu de rotor (24) et séparant fluidiquement une pluralité de compartiments de pompage rotatifs (32a-e), chaque palette de pendule (28, 28') étant articulée de façon pivotante au niveau de l'anneau de rotor (22, 22') et au niveau d'un élément de coulissement (30), et chaque élément de coulissement (30) étant doté d'une partie de transfert de force (34) permettant d'assurer un transfert de force entre le moyeu de rotor (24) et une palette de pendule (28, 28').
PCT/EP2018/055350 2018-03-05 2018-03-05 Pompe de lubrification à palettes de pendule variables WO2019170217A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112018007222.3T DE112018007222T5 (de) 2018-03-05 2018-03-05 Variable Pendelschieber-Schmiermittelpumpe
PCT/EP2018/055350 WO2019170217A1 (fr) 2018-03-05 2018-03-05 Pompe de lubrification à palettes de pendule variables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/055350 WO2019170217A1 (fr) 2018-03-05 2018-03-05 Pompe de lubrification à palettes de pendule variables

Publications (1)

Publication Number Publication Date
WO2019170217A1 true WO2019170217A1 (fr) 2019-09-12

Family

ID=61691446

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/055350 WO2019170217A1 (fr) 2018-03-05 2018-03-05 Pompe de lubrification à palettes de pendule variables

Country Status (2)

Country Link
DE (1) DE112018007222T5 (fr)
WO (1) WO2019170217A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010024222A1 (de) 2010-04-07 2011-10-13 Volkswagen Ag Drehschieberpumpenvorrichtung, insbesondere für mindestens einen Hydraulikkreislauf eines automatischen oder automatisierten Getriebes eines Kraftfahrzeugs
DE102011077096A1 (de) * 2011-06-07 2012-12-13 Mahle International Gmbh Pendelschieberpumpe
WO2014111318A2 (fr) * 2013-01-18 2014-07-24 Mahle International Gmbh Compresseur à spirales
DE102013218018A1 (de) 2013-09-10 2015-03-12 Mahle International Gmbh Pendelschieberzellenpumpe, insbesondere Ölpumpe
WO2016198091A1 (fr) * 2015-06-08 2016-12-15 Pierburg Pump Technology Gmbh Pompe de lubrification à dispositif de coulissement à pendule variable
EP3249156A1 (fr) * 2016-05-24 2017-11-29 Robert Bosch GmbH Machine, en particulier pompe de pression d'huile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010024222A1 (de) 2010-04-07 2011-10-13 Volkswagen Ag Drehschieberpumpenvorrichtung, insbesondere für mindestens einen Hydraulikkreislauf eines automatischen oder automatisierten Getriebes eines Kraftfahrzeugs
DE102011077096A1 (de) * 2011-06-07 2012-12-13 Mahle International Gmbh Pendelschieberpumpe
WO2014111318A2 (fr) * 2013-01-18 2014-07-24 Mahle International Gmbh Compresseur à spirales
DE102013218018A1 (de) 2013-09-10 2015-03-12 Mahle International Gmbh Pendelschieberzellenpumpe, insbesondere Ölpumpe
WO2016198091A1 (fr) * 2015-06-08 2016-12-15 Pierburg Pump Technology Gmbh Pompe de lubrification à dispositif de coulissement à pendule variable
EP3249156A1 (fr) * 2016-05-24 2017-11-29 Robert Bosch GmbH Machine, en particulier pompe de pression d'huile

Also Published As

Publication number Publication date
DE112018007222T5 (de) 2020-11-26

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