WO2015090311A1 - Pompe à cylindrée variable - Google Patents

Pompe à cylindrée variable Download PDF

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Publication number
WO2015090311A1
WO2015090311A1 PCT/DE2014/200659 DE2014200659W WO2015090311A1 WO 2015090311 A1 WO2015090311 A1 WO 2015090311A1 DE 2014200659 W DE2014200659 W DE 2014200659W WO 2015090311 A1 WO2015090311 A1 WO 2015090311A1
Authority
WO
WIPO (PCT)
Prior art keywords
variable displacement
displacement pump
pump
rotor
connections
Prior art date
Application number
PCT/DE2014/200659
Other languages
German (de)
English (en)
Inventor
Dominik Herkommer
Markus Baehr
Marco Grethel
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to DE112014005946.3T priority Critical patent/DE112014005946A5/de
Priority to US15/030,732 priority patent/US20160252080A1/en
Priority to CN201480069177.5A priority patent/CN105829711B/zh
Publication of WO2015090311A1 publication Critical patent/WO2015090311A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
    • F04B1/328—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the axis of the cylinder barrel relative to the swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F04B1/2064—Housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/28—Control of machines or pumps with stationary cylinders
    • F04B1/29—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
    • F04B1/295—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/26—Control
    • F04B1/30—Control of machines or pumps with rotary cylinder blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/34—Control not provided for in groups F04B1/02, F04B1/03, F04B1/06 or F04B1/26
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
    • 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
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • 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
    • F04C2/3448—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 with axially movable vanes

Definitions

  • the invention relates to a variable displacement pump with two connections for supplying and discharging a volume flow delivered by the variable displacement pump.
  • the invention further relates to a method for operating such a variable displacement pump.
  • German published patent application DE 199 30 648 A1 discloses an electrohydraulic pressure supply with a variable-speed electric drive motor and a variable displacement pump, the displacement of which can be changed by an adjusting member, with connection lines and consumer connections.
  • the object of the invention is to simplify the provision of independently adjustable volume flows.
  • variable displacement pump with two connections for supplying and discharging a volume flow delivered by the variable displacement pump in that the variable displacement pump has an additional connection for providing an additional volume flow.
  • the hydraulic consumers are, for example, partial clutches of a double clutch.
  • the variable displacement pump is preferably permanently drivingly connected to a drive device, for example an internal combustion engine drive device.
  • the volumetric flows provided at the connection and the additional connection can advantageously be set separately from one another.
  • variable displacement pump is characterized in that the variable displacement pump is adjustable by independently adjustable physical signals so that the volume flows at two of the total of three ports are independently adjustable.
  • One of the connections is a reservoir connection, via which a hydraulic medium to be delivered is sucked in.
  • the hydraulic medium is, for example, hydraulic oil, which is also abbreviated as oil.
  • the two other connections are inputs or outputs of the variable displacement pump.
  • the adjustment can be two-dimensional or three-dimensional.
  • a further preferred embodiment of the variable displacement pump is characterized in that the variable displacement pump is adjustable by independently adjustable physical signals so that the volume flows at two of the total of three ports are reversible with respect to their flow direction. The reversal of the flow direction can be carried out particularly advantageously without reversing the direction of rotation of the delivery pump.
  • the type of adjustment signals depends on the type or design of the variable displacement pump.
  • variable displacement pump is designed as a vane pump or as a radial piston pump.
  • the adjustment is preferably carried out by a displacement of rotor axes against a contour on a pump housing. Different displacement directions determine the volume flow of each pump outlet.
  • variable displacement pump is designed as an axial piston pump.
  • the adjustment of the volume flow preferably results from a tilting of a swash plate or swash plate, which causes an axial movement of the pump piston.
  • two tilting directions affect the volume flows that are provided at the connection and the additional connection.
  • the above-mentioned object is alternatively or additionally achieved in that a volumetric flow is provided in each case at two connections.
  • the two volume flows are separated and independently adjustable.
  • the two independently controllable volume flows can be used, for example, to actuate a double clutch.
  • a preferred embodiment of the method is characterized in that the volume flows provided at the two ports are set independently by independently adjustable physical signals. The type of adjustment depends on the type of variable displacement pump used.
  • Another preferred exemplary embodiment of the method is characterized in that at least one of the volume flows provided at the two connections is reversed with respect to its flow direction. The reversal of the flow direction is particularly advantageous without reversing the direction of rotation of the variable.
  • a further preferred exemplary embodiment of the method is characterized in that the volume flows provided at the two connections are combined to form a third volume flow.
  • the functionality of the variable displacement pump according to the invention can be further increased.
  • Figure 1 is a greatly simplified representation of a variable displacement pump according to a first
  • Figure 2 is a similar view as in Figure 1 with wings additionally shown;
  • Figure 3 shows the variable displacement pump of Figure 2 with lines and arrows illustrating the operation of the variable
  • Figure 4 is a perspective view of a running as axial piston pump
  • Figure 5 shows the variable displacement pump of Figure 4 in a different perspective
  • Figure 6 is a simplified representation of a variable displacement pump designed as a radial piston pump.
  • FIGS. 1 to 3 a variable displacement pump 1 with a housing 3 is shown in simplified form.
  • a rotor 5 is rotatably driven.
  • Figure 1 is indicated by double arrows in the center of the rotor 5, that the rotor 5 is movable in the housing 3 in order to adjust a delivery volume or displacement of the variable displacement pump 1.
  • lines 14 to 17 are indicated in Figure 1 adjustment directions, along which the rotor 5 can be moved in the housing 3.
  • the variable displacement pump 1 has a reservoir connection 10, a connection 11 and an additional connection 12 on the housing 3.
  • the reservoir port 10 allows supply of hydraulic fluid from a hydraulic fluid reservoir (not shown).
  • the two terminals 1 1 and 12 are advantageously separated from each other adjustable.
  • the terminal 1 1 is connected, for example, with a slave cylinder of a first part clutch a double clutch.
  • the terminal 12 is then advantageously connected to a slave cylinder of a second part clutch of the double clutch.
  • the illustrated terminals 10 to 12 represent areas in which the terminals 10 to 12 are provided on the housing 3.
  • the terminals 10 to 12 may be arranged in a lateral surface of the housing 3.
  • the terminals 10 to 12 may also be arranged in an end face or an end face of the housing 3.
  • the rotor has slots for the radially movable arrangement of a total of eight wings 20.
  • the wings 20 are arranged with their radially inner ends in the rotor slots. With their radially outer ends, the wings 20 bear against an inner contour of the housing 3.
  • Figure 3 is indicated by an arrow 19 that the rotor 5 is driven in a clockwise direction.
  • the rotor 5 rotates with the vanes 20 in the housing 3.
  • the displacements indicated in FIGS. 1 and 2 by the double arrows in the center of the rotor 5 can be initiated from outside on the rotor 5 or on the housing 3.
  • the drive of the rotor 5 can be done for example by a fixed coupling with a drive train of a motor vehicle. Even if the shift to adjust the volu- Menströme can be done both through the housing 3 and through the rotor 5, the adjustment will be explained below with reference to a displacement of the rotor 5.
  • Figure 3 In Figure 3 are indicated by dashed lines 21 and 22 axes of movement along which the rotor 5 for adjusting the provided at the terminals 11 and 12 volume flows is movable.
  • Arrows 23 and 24 indicate pumping direction indicators for a first consumer, for example a first partial clutch of a double clutch.
  • the dashed line 21 represents a neutral line for the first consumer.
  • Arrows 25 and 26 indicate pumping direction indicators for a second consumer, for example for a second partial clutch of the double clutch.
  • the dashed line 22 represents a neutral line for the second consumer.
  • the volume flow from the first consumer remains zero.
  • the volume flow from the second consumer remains zero when the rotor 5 is displaced along the dashed line 22.
  • the rotor 5 is located exactly in the middle, as shown in FIG. 3, it is arranged on both neutral lines 21, 22. Then, the volume flow delivered by the variable displacement pump 1, or the two volume flows provided at the connections 11 and 12, are equal to zero, independently of a rotational speed of the rotor 5.
  • variable displacement pump 31 is shown in perspective in various views.
  • the variable displacement pump 31 is designed as an axial piston pump and adjustable in a similar manner as the variable displacement pump 1 described above.
  • the axial piston pump 31 comprises a housing 33 with a disc 34.
  • a revolver 35 corresponds to the rotor (5 in Figure 1) and is rotatably driven.
  • pistons 36 are guided in the axial direction movable back and forth.
  • the pistons 36 are supported by sliding shoes 37 on a swash plate 38.
  • lever 39 are provided, symbolize the axes by which the swash plate 38 can be pivoted to adjust the delivery volume or absorption volume of the variable 31.
  • a reservoir port 40 is provided in the disc 34.
  • a port 41 and an additional port 42 are provided in the disc 34.
  • the volume flows of the variable displacement pump 31 provided at the ports 41 and 42 are displaced by an inclination of the swash plate 38 instead of being displaced.
  • the revolver 35 rotates relative to the disc 34 with the terminals 40 to 42.
  • the revolver 35 also rotates relative to the swash plate 38, wherein the rotating revolver 35 entrains the piston 36.
  • the drive of the revolver 35 is not shown and can be done in various ways.
  • the drive of the revolver 35 may be effected, for example, via a shaft which extends through the swash plate 38 or through the disc 34.
  • the piston 35 can be driven directly via a toothing, which is formed on the revolver 35 itself.
  • the inclination of the swash plate 38 can be adjusted three-dimensionally.
  • the control when adjusting the variable displacement pump 31 is analogous to the previously described adjustment of the vane pump 1. In contrast to the vane pump 1 is not deflected in the axial piston pump 31, but tilted.
  • variable displacement pump 31 The adjustment or adjustment of the variable displacement pump 31 is carried out with a separate mechanism whose connection is shown here only schematically in the form of lever 39.
  • the in the figures 4 and 5 illustrated variable displacement pump 31 includes three pistons 36 in the turret 35. Differently than shown, in the revolver 35 but preferably more than three pistons 36, for example, five and six pistons 36, guided in the axial direction to and fro movable.
  • the axial piston pump 31 is shown from a slightly different perspective with lifted disc 34. Since the disc 34 contains the terminals 40 to 42, the disc 34 is also referred to as a connection plate. The bearing 45 of the swash plate 38 takes place, as shown by way of example in FIG. 5, via a ball geometry.
  • FIG. 6 shows in simplified form a variable displacement pump 51 designed as a radial piston pump.
  • the radial piston pump 51 comprises a housing 53, in which a rotor 55 is rotatably driven in the clockwise direction, as indicated by an arrow in the center of the rotor 55.
  • a total of eight pistons 56 are guided back and forth movable radially outward.
  • the radially aligned pistons 56 are each arranged with their radially inner end in the rotor 55. With their respective radially outer end, the piston 56, optionally with the interposition of sliding shoes, in abutment against an inner contour of the housing 53.
  • the housing 53 comprises in a similar manner as in the vane pump 1 shown in Figures 1 to 3, a reservoir port 60, a port 61 and an additional port 62.
  • the pistons 56 are pressed radially inwards.
  • the adjustment of the volume flows provided at the connections 61 and 62 takes place analogously to the vane pump 1 shown in FIGS. 1 to 3 via a translation between the housing 53 and the rotor 55.

Landscapes

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

Abstract

L'invention concerne une pompe à cylindrée variable dotée de deux raccords pour l'admission et l'évacuation d'un flux volumique refoulé par la pompe à cylindrée variable. L'invention se caractérise en ce que la pompe à cylindrée variable présente un raccord supplémentaire pour disposer d'un flux volumique supplémentaire.
PCT/DE2014/200659 2013-12-18 2014-11-27 Pompe à cylindrée variable WO2015090311A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112014005946.3T DE112014005946A5 (de) 2013-12-18 2014-11-27 Verstellpumpe
US15/030,732 US20160252080A1 (en) 2013-12-18 2014-11-27 Variable displacement pump
CN201480069177.5A CN105829711B (zh) 2013-12-18 2014-11-27 变量泵

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013226374 2013-12-18
DE102013226374.0 2013-12-18

Publications (1)

Publication Number Publication Date
WO2015090311A1 true WO2015090311A1 (fr) 2015-06-25

Family

ID=52396328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2014/200659 WO2015090311A1 (fr) 2013-12-18 2014-11-27 Pompe à cylindrée variable

Country Status (4)

Country Link
US (1) US20160252080A1 (fr)
CN (1) CN105829711B (fr)
DE (1) DE112014005946A5 (fr)
WO (1) WO2015090311A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016201925A1 (de) * 2016-02-09 2017-08-10 Zf Friedrichshafen Ag Flügelzellenpumpe
DE102018006981A1 (de) * 2018-09-04 2020-03-05 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Hydraulische Verdrängerpumpe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752021A (en) * 1953-06-25 1956-07-04 Nils Einar Olzon Improvements in or relating to piston pumps
EP0816678A2 (fr) * 1996-07-03 1998-01-07 Brueninghaus Hydromatik Gmbh Dispositif de commande hydraulique pour la commande d'une pluralité de pompes à déplacement variable
DE19930648A1 (de) 1999-07-02 2001-01-11 Daimler Chrysler Ag Elektrohydraulische Druckversorgung mit verstellbarer Pumpe und regelbarem elektrischem Antrieb
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DE112014005946A5 (de) 2016-10-06
CN105829711B (zh) 2017-12-15

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