EP2205850A1 - Pompe à carburant destinée à transporter du carburant d'un réservoir vers un moteur à combustion interne - Google Patents

Pompe à carburant destinée à transporter du carburant d'un réservoir vers un moteur à combustion interne

Info

Publication number
EP2205850A1
EP2205850A1 EP08804632A EP08804632A EP2205850A1 EP 2205850 A1 EP2205850 A1 EP 2205850A1 EP 08804632 A EP08804632 A EP 08804632A EP 08804632 A EP08804632 A EP 08804632A EP 2205850 A1 EP2205850 A1 EP 2205850A1
Authority
EP
European Patent Office
Prior art keywords
rotor
fuel pump
impeller
fuel
pump according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08804632A
Other languages
German (de)
English (en)
Inventor
Johannes Deichmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2205850A1 publication Critical patent/EP2205850A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/048—Arrangements for driving regenerative pumps, i.e. side-channel pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps
    • F04D5/003—Regenerative pumps of multistage type
    • F04D5/006—Regenerative pumps of multistage type the stages being axially offset
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2793—Rotors axially facing stators
    • H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the invention relates to a fuel pump for conveying fuel from a reservoir to an internal combustion engine having a housing, at least one impeller arranged in the housing, wherein the impeller has at least one ring of spaced-apart blades, an electric motor driving the impeller via a shaft, which is designed as an axial field motor and has a rotor and a stator, the rotor of which has permanent magnets and that the permanent magnets opposite windings supporting bobbins at a distance from the rotor axis and at regular angular intervals are fixedly arranged in the housing.
  • a fuel pump with a small overall length is known from DE 196 17 495 Al.
  • Form this fuel pump the rotor of the electric motor and the impeller of the pump a one-piece assembly.
  • the radially inner rotor carries the windings.
  • the impeller connects radially to the outside of the rotor.
  • the windings on the rotor opposite permanent magnets are arranged on both sides of the rotor, which form the stator of the electric motor.
  • the pump housing which receives the impeller with the blade rings, adjoins the permanent magnets radially on the outside.
  • a disadvantage of this design of an axial field motor is the large diameter of the rotor, which is due to the size of the windings, which in turn to achieve a predetermined torque of the
  • the diameter of the fuel pump can not be increased arbitrarily due to the predetermined openings in the reservoir.
  • the invention is therefore based on the object to provide a fuel pump with improved efficiency with small dimensions.
  • the object is achieved in that the bobbin are arranged with respect to their longitudinal alignment parallel to the shaft of the electric motor.
  • the diameter of the coil arrangement can be substantially smaller than in the case of an arrangement of the coils on the rotor.
  • a fuel pump constructed in this way therefore has a substantially smaller outer diameter, which lies approximately in the range of previously used fuel pumps.
  • the fuel pump according to the invention can be used in existing conveyor units.
  • the arrangement of the bobbin designed with little effort when the stator has radially extending walls, wherein chambers are formed by the walls, and at least one coil body carrying the windings is arranged in a chamber.
  • the stator forms a part of the housing.
  • Turbulences in the region of the permanent magnets are avoided in a particularly simple embodiment if the permanent magnets are arranged in the rotor in such a way that they terminate with the respective side surface of the rotor.
  • the rotor consists of a rotor disk on which the permanent magnets are arranged.
  • the performance of the fuel pump can be increased if the rotor consists of two rotor disks, which are arranged in the axial extent on both sides of the coil assembly, so that they include the coil assembly.
  • the impeller is arranged in the flow direction in front of the rotor.
  • This has the advantage that the electric motor can be pre-assembled and tested as an assembly before it is installed in the fuel pump. If the fuel pump has a front and a main pump stage, an advantageous embodiment is that two wheels are provided, wherein the electric motor is disposed between the wheels.
  • the fuel pump according to the invention requires in axial
  • the impeller can be arranged both radially inwardly and radially outwardly with respect to the permanent magnets. If the impeller is arranged in the radially outer region of a rotor disk, an annular impeller has formed proved to be advantageous.
  • the impeller may be formed in this case both as a side channel or peripheral wheel, while it is formed at a relation to the permanent magnet radially inner arrangement as a 9.kanalrad.
  • the rotor as a rotor disk, which is formed in its radially outer region as an impeller of a peripheral or side channel pump and, viewed in the flow direction, to arrange a further pump impeller in front of the rotor disk.
  • the rotor has two rotor disks, which are arranged in the axial extent to both sides of the coil arrangement, wherein the impellers are annular and are each arranged in the radially outer region of a rotor disk, so that the rotor disks and the wheels form a structural unit.
  • the pumping stage can be designed as a separate impeller or in a structural unit with a rotor.
  • the provision of several pump stages can also be used to supply a plurality of consumers or to fill a reservoir, in particular a baffle.
  • a pump stage for conveying fuel to the internal combustion engine of the motor vehicle, while the other pump stage promotes fuel to drive a suction jet pump is used.
  • a suction jet pump Since the fuel requirement of a suction jet pump is substantially lower than that of an internal combustion engine, according to a further embodiment it is advantageous to use only a portion of the conveyed force at several pump stages. amount of material to supply a pumping stage of the suction jet pump, while the remaining amount of fuel is supplied to the internal combustion engine.
  • stator For cooling the electric motor, it is beneficial if the stator is designed in such a way that the fuel conveyed by an impeller located upstream of the coil arrangement flows through the coil arrangement.
  • the supply of the fuel to the coil assembly designed with little effort, when the outlet of the upstream in the flow direction of the coil assembly and the coil assembly are connected to a channel.
  • the channel may have an oblique or an angled course with respect to the shaft of the electric motor.
  • Such a channel profile can be produced by simple means.
  • stator which is designed in such a way that the fuel conveyed by an impeller located upstream of the coil arrangement flows around the stator forming the housing with the coil arrangement. In this way, the coil assembly is not cooled directly from the fuel but via the heat output to the stator.
  • the cooling can be reinforced with a stator made of a good thermal conductivity material.
  • Such a fuel guide in the fuel pump can be achieved with a channel arranged in the stator for the fuel, wherein the channel is arranged in the region of the coil assembly parallel to the coil assembly.
  • distribution device allows a division of the funded fuel flow, so that a partial flow through the Coil arrangement and a partial flow of the coil assembly is passed over.
  • such a distribution device can also be used to divide the fuel flow in such a way that a part is directed to a first consumer, in particular an ejector pump, and the remaining part to a second consumer, in particular a second pumping stage or the internal combustion engine.
  • FIG. 1 shows an exploded view of a fuel pump with two impellers
  • FIGS. 2a-c further embodiments with separate impellers
  • Figures 3a-d further embodiments with integrated
  • FIGS. 4a-c further embodiments with a plurality of coil arrangements.
  • the fuel pump 1 shown in Figure 1 consists of a first housing cover 2 having an inlet port 3, is sucked through the fuel from the fuel pump 1.
  • the first housing cover 2 has on the side facing away from the inlet nozzle 3 an annular channel 4 with a semicircular cross-section, which is connected to the inlet nozzle 3 and extends over 330 °.
  • a first rotor 5 Opposite the channel 4, a first rotor 5 is arranged.
  • the first rotor 5 has a first impeller 6 forming ring 7, arranged on the two sides in each case a ring 8 of blade chambers 9 bounding blades 10 is.
  • Four magnets 11 in the form of a circular ring are connected to the first rotor 5 on the side facing away from the first housing cover 2.
  • the first rotor 5 has a central bore 12 in which a shaft 13 is arranged rotationally fixed.
  • a stator 14 connects to the first rotor 5.
  • the stator 14 has a central bore 15.
  • a bearing bush 19 for the shaft 13 is inserted into the bore 15.
  • concentric six chambers 16 are arranged at the same angular distance from each other, in each of which a
  • Coil 17 is arranged.
  • the chambers 16 are separated from one another in the axial extent by chamber walls.
  • the bobbin 17 are aligned so that they are arranged in their longitudinal extent parallel to the shaft 13 of the electric motor. On the bobbins 17 is one each
  • Winding 18 arranged.
  • the bobbins 17 with the windings 18 are arranged concentrically so that they face the magnet 11 of the first rotor 5.
  • stator 14 In its radially outer region, the stator 14 has on its side facing the first rotor 5 side 22 a shoulder 20 which is formed such that the ring 7, which forms the first impeller 6, is received therein.
  • the shoulder 20 has a part-ring-shaped channel 21 which corresponds in arrangement and design to the channel 4 of the first housing cover 2, so that the first housing cover 2, the ring 7 and the shoulder 20 form a side channel pumping stage.
  • the partially annular channel 21 in the stator 14 has in the conveying direction at its end an outlet 23 which extends in the radially outer region of the stator 14 as a channel 23a to an inlet 23b.
  • the stator 14 has a side 24 of the same construction with a shoulder 25 for receiving a second impeller 26 and a partially annular channel 27.
  • the partially annular channel 27 begins at the inlet, not shown, and also extends over an angular range of 330 °.
  • the second impeller 26, which is formed by a ring 28, corresponds to the structure of the impeller 6 with arranged on both sides of wreaths 29 of blade chambers 30 bounding the blades 31.
  • the second impeller 26 forms a structural unit with a second rotor 32.
  • the second rotor 32 with the magnets 33 corresponds in terms of construction and arrangement to the bobbins 17 with the windings 18 to the first rotor 5.
  • the fuel pump 1 On the side facing away from the magnets 33 of the second rotor 32, the fuel pump 1 is closed by a second housing cover 34, which corresponds in its construction to the first housing cover 2. Due to the compact design, the fuel pump 1 has an axial length of 35mm and a diameter of 70mm.
  • a separate impeller 6 is arranged on the shaft 13. In the flow direction behind a first rotor 5 and a second rotor 32 are arranged. Between the two rotors 5, 32, the bobbin 17 are arranged with winding 18. Impeller 6 and rotor 5 are separate components.
  • the structure of the fuel pump 1 in Figure 2b corresponds to the structure of Figure 2a. Only after the second rotor 32 is a second impeller 26 arranged as an additional component. By the second impeller 32, which is a second pump stage, the internal combustion engine is supplied with fuel. The funded by the first impeller 6 fuel is used to drive a suction jet pump, not shown.
  • FIG. 2c shows a fuel pump 1 with only one rotor 5, to which coil body 17 with winding 18 adjoin in the flow direction.
  • an impeller 6 is arranged on the side facing away from the rotor 5 of the bobbin 17.
  • Such a fuel pump 1 requires due to the simple structure of a small space and is suitable with the one impeller 6 for lower requirements.
  • FIG. 3 a shows such a fuel pump 1 as a schematic representation. The construction corresponds to the fuel pump 1 of the pump of FIG. 1.
  • FIG. 3b shows a fuel pump 1, which differs from the fuel pump according to FIG. 3a in that the running wheels 6, 26 are arranged radially inward with respect to the rotors 5, 32.
  • Figure 3c shows a fuel pump 1 with only a rotor 5 and an impeller 6. This fuel pump 1 is characterized by a smaller footprint.
  • the fuel pump 1 in Figure 3d has two rotors 5, 32 and an impeller 6, wherein the impeller 6 with the first rotor 5 forms a structural unit.
  • FIGS. 4a-c Fuel pumps for higher demands are shown in FIGS. 4a-c.
  • the fuel pump 1 in Figure 4a has three rotors 5, 32, 35 between which bobbin 17, 36 are arranged with windings 18, 37, wherein the bobbin 17, 36 are aligned in their longitudinal direction parallel to the rotor axis.
  • the fuel pump 1 has an impeller 6, which forms a structural unit with the first rotor 5.
  • the impeller 6 is arranged according to Figure 1 as a ring radially outward on the first rotor 5.
  • the fuel pump 1 in Figure 4b has two wheels 6, 26 according to the wheels in Figure 1. Both wheels 6, 26 promote fuel to the internal combustion engine, not shown.
  • part of the fuel delivered by the first impeller 6 is supplied to a suction jet pump (not shown) as a drive.
  • the fuel pump 1 in Figure 4c builds on the fuel pump 1 of Figure 4b, wherein the third rotor 35 also forms a structural unit with an impeller 38 analogous to the rotors 5, 32.
  • the invention is not limited to impellers with a ring of blade chambers limiting blades on each side of the impeller and the corresponding part-annular channels in the housing cover and stator.
  • the impellers with the corresponding channels may also have a plurality of concentrically arranged rings of blades bounding blade chambers or more, preferably two, arranged on a pitch circle diameter, corresponding channels have.
  • the at least one ring of blade chambers limiting blades can be arranged only on one side of an impeller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une pompe à carburant (1) destinée à transporter du carburant d'un réservoir vers un moteur à combustion interne, comportant un carter; au moins une roue à aubes(6, 26) disposée dans le carter, présentant au moins une couronne d'aubes (10, 31) espacées les unes par rapport aux autres; et un moteur électrique entraînant la roue à aubes au moyen d'un arbre (13), conçu en tant que moteur à champ axial, présentant un rotor (5, 32) et un stator (14). Le rotor est pourvu d'aimants permanents (11, 33) et des corps de bobine (17) portant des enroulements (18) sont disposés fixes dans le stator, en face des aimants permanents, à distance de l'axe de rotor, et à des angles réguliers. Les corps de bobine (17) sont disposés parallèles à l'arbre du moteur électrique en ce qui concerne leur orientation longitudinale.
EP08804632A 2007-09-27 2008-09-24 Pompe à carburant destinée à transporter du carburant d'un réservoir vers un moteur à combustion interne Withdrawn EP2205850A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007046580 2007-09-27
PCT/EP2008/062719 WO2009043765A1 (fr) 2007-09-27 2008-09-24 Pompe à carburant destinée à transporter du carburant d'un réservoir vers un moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP2205850A1 true EP2205850A1 (fr) 2010-07-14

Family

ID=40293901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08804632A Withdrawn EP2205850A1 (fr) 2007-09-27 2008-09-24 Pompe à carburant destinée à transporter du carburant d'un réservoir vers un moteur à combustion interne

Country Status (5)

Country Link
EP (1) EP2205850A1 (fr)
JP (1) JP2010540823A (fr)
KR (1) KR20100058649A (fr)
BR (1) BRPI0817529A2 (fr)
WO (1) WO2009043765A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2537233A4 (fr) * 2010-03-22 2016-07-13 Regal Beloit Corp Machine électrique à flux axial et procédés d'assemblage associés
WO2015104818A1 (fr) * 2014-01-09 2015-07-16 三菱電機株式会社 Module de pompe à carburant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844802A1 (de) * 1998-09-30 2000-04-13 Pierburg Ag Elektrische Brennstoffpumpe für Brennkraftmaschinen
US6280157B1 (en) * 1999-06-29 2001-08-28 Flowserve Management Company Sealless integral-motor pump with regenerative impeller disk
WO2003016718A1 (fr) * 2001-08-21 2003-02-27 Advanced Rotary Systems, Llc Pompe motorisee integree
JP2005325688A (ja) * 2004-05-12 2005-11-24 Aisan Ind Co Ltd 燃料ポンプ
JP2007166693A (ja) * 2005-12-09 2007-06-28 Aisan Ind Co Ltd アキシャル型モータと燃料ポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009043765A1 *

Also Published As

Publication number Publication date
JP2010540823A (ja) 2010-12-24
KR20100058649A (ko) 2010-06-03
WO2009043765A1 (fr) 2009-04-09
BRPI0817529A2 (pt) 2019-09-24

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