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EP1813009A1 - Pompe a carburant - Google Patents

Pompe a carburant

Info

Publication number
EP1813009A1
EP1813009A1 EP05794654A EP05794654A EP1813009A1 EP 1813009 A1 EP1813009 A1 EP 1813009A1 EP 05794654 A EP05794654 A EP 05794654A EP 05794654 A EP05794654 A EP 05794654A EP 1813009 A1 EP1813009 A1 EP 1813009A1
Authority
EP
European Patent Office
Prior art keywords
brushes
fuel pump
commutator
stator
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Withdrawn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
EP05794654A
Other languages
German (de)
English (en)
Inventor
Eberhard Geissel
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
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1813009A1 publication Critical patent/EP1813009A1/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Withdrawn legal-status Critical Current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
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
    • H02K5/148—Slidably supported brushes
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/006—Structural associations of commutators
    • 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
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • 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 fuel tank of a motor vehicle with a pump stage driven by an electric motor, with a rotatably mounted shaft supporting a rotor of the pump stage, with a rotor of the electric motor rotatably mounted on the shaft and radially outward
  • the rotor arranged stator and with parallel to the shaft against a commutator biased brushes for contacting zu ⁇ least one arranged on the rotor coil.
  • Such fuel pumps are widely used in today's motor vehicles and are known in practice.
  • two brushes of the electric motor are normally biased against the commutator.
  • the electric motor has axial guides on the side of the commutator facing away from the rotor. These axial guides are usually made of an electrically conductive material and are electrically connected to connecting contacts arranged on a connecting piece covering the fuel pump.
  • the known fuel pump essentially consists of three axially superposed sections, namely the pump stage, the stator and the rotor having section of the electric motor and the connection piece for the electric motor zu ⁇ together.
  • a disadvantage of the known fuel pump is that it has a very large height. However, this is disadvantageous in the case of today ⁇ gen, usually only a very small height having Kraft ⁇ containers, since in such Kraftstoffbe ⁇ containers the known fuel pump can not be mounted.
  • the invention is based on the problem to make a Kraftstoffpum ⁇ pe of the type mentioned so that it has a very low overall height.
  • the length of the fuel pump according to the invention is essentially determined by the length of the rotor of the electric motor with its bearings and by the pump stage.
  • the brushes do not, in contrast to the be ⁇ knew fuel pump to an increase in height as they are ordered to ⁇ adjacent the rotor and at the height of the rotor.
  • the fuel pump according to the invention thereby has a particularly low overall height.
  • the brushes could be radially biased against a barrel commutator.
  • the inventive fuel pump is particularly compact, when the commutator is designed disc-shaped and extends with its outer edge to over the stator and when the brushes are arranged in the stator. By this design, in addition to the axial also the radial dimensions of the electric motor are kept particularly low.
  • the fuel pump of the invention designed to constructive ⁇ tive particularly simple if the brushes are arranged in a pocket of the stator.
  • the assembly of the fuel pump according to the invention is particularly simple if spring elements for biasing the brushes against the commutator are arranged behind the brushes, as seen from the commutator.
  • the spring elements are each formed as a compression spring.
  • magnetic shells of the stator or supports arranged between two magnetic shells support the spring elements for biasing the brushes.
  • the space requirement of the brushes in the region of the stator can be kept particularly low, according to another advantageous development of the invention, when the spring elements engage around the commutator and the brushes.
  • the commutator and the brushes are viewed from the rotor radially outward.
  • the bias of the brush on a particularly small space in the region of the stator In the simplest case, the spring elements are C-shaped in a soan ⁇ view.
  • a housing cover covering the electric motor generally has a large distance from the commutator in the known fuel pumps. According to another advantageous development of the invention, such a distance can be easily avoided if a housing cover aufwei ⁇ a storage for the shaft directly opposite the commutator.
  • FIG. 1 shows a schematic longitudinal section through a fuel pump according to the invention
  • Figure 2 shows schematically a partial section through the erfindungs ⁇ modern fuel pump of Figure 1 along the Li ⁇ never II - II,
  • FIG. 3 schematically shows a partial section through a further embodiment of the fuel pump according to the invention
  • FIG. 4 schematically shows a partial section through a further embodiment of the fuel pump according to the invention.
  • the electric motor 1 shows a fuel pump with a romotor by a Elect ⁇ 1 driven pump stage 2.
  • the electric motor 1 comprises a housing 3 mounted in a stator 4 and a on a shaft 5 rotatably mounted rotor 6.
  • the impeller stage 2 has an impeller 7 arranged on the shaft 5 in a rotationally fixed manner.
  • the impeller 7 rotates between two housing parts 10, 11 having an inlet 8 and an outlet 9.
  • the housing 3 of the fuel pump 2 is the inlet 8 having housing part 10 of the pump stage 2 and connected to a covering the electric motor 1 housing cover 12.
  • the housing cover 12 has an outlet 13 and a La ⁇ delay 14 of one end of the shaft 5.
  • the other end of the shaft 5, a bearing 15 in which the inlet 8 having Ge casing part 10 of the pump stage 2.
  • the pump stage 2 is formed as generally known Side channel pump formed. For a drive of the electric motor 1, the pump stage promotes 2 force ⁇ material from the inlet 8 through the outlet 9 and the electric motor 1 to the outlet 13. At the outlet 13 can be connected a flow line, on the Kraft ⁇ material from a fuel tank is promoted to a Brennkraftmaschi ⁇ ne. To simplify the drawing, the fuel tank, the internal combustion engine and the supply line are not shown.
  • the electric motor 1 has a commutator 16 mounted on the shaft 5 against which two brushes 17 are biased.
  • the commutator 16 is disc-shaped and guided with its outer edge to over the stator 4, in which the brushes 17 are arranged displaceably.
  • the brushes 17 are formed for example as charcoal pins and are biased by Fe ⁇ derettin 18.
  • the spring elements 18 are supported on a support 19 fixed in the housing 3.
  • the commutator 16 is electrically connected to coils of the rotor 6, not shown.
  • the brushes 17 are transferred to the the housing cover 12 arranged connection contacts 20 with electrical ⁇ schem powered.
  • the connection contacts 20 are arranged radially next to the commutator 16 and therefore have no influence on the axial height of the fuel pump.
  • FIG. 2 shows a sectional view through the fuel pump from FIG. 1 along the line II-II in the region of one of the brushes 17. It can be seen here that the brush 17 is guided in a gap between two magnetic shells 21 of the stator 4. The edges of the magnetic shells 21 thus form a guide 22 of the brush 17.
  • FIG. 3 shows, from the perspective shown in FIG. 2, a further embodiment of the fuel pump in which the stator 4 has a pocket 23 for receiving and as a guide 24 of the brush 17.
  • the bottom of the pocket 23 forms a support 25 for supporting the spring element 18th
  • FIG. 4 shows a further embodiment of the fuel pump, in which the commutator 16 is encompassed by a C-shaped spring element 26.
  • One end of the spring element 26 biases the brush 17 against the commutator 16, while the other end is supported on a support 27 of the housing 3 shown in FIG.
  • the spring element 26 is shown rotated in the plane of the drawing.
  • the stator 4 has a recess 28 as a guide 29 of the brush 17th

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Dc Machiner (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne une pompe à carburant comprenant un étage pompe (2) entraîné par un moteur électrique (1). Des brosses (17) destinées à entrer en contact avec un commutateur (16) sont placées radialement à proximité d'un rotor (6). A cet effet, un stator (4) entourant le rotor (6) a des poches destinées à recevoir les brosses (17). Des contacts de connexion (20) électriquement reliés aux brosses (17) sont disposés radialement à proximité du commutateur (16). La pompe à carbourant a une hauteur de construction particulièrement faible.
EP05794654A 2004-11-17 2005-10-05 Pompe a carburant Withdrawn EP1813009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004055441A DE102004055441A1 (de) 2004-11-17 2004-11-17 Kraftstoffpumpe
PCT/EP2005/055000 WO2006053801A1 (fr) 2004-11-17 2005-10-05 Pompe a carburant

Publications (1)

Publication Number Publication Date
EP1813009A1 true EP1813009A1 (fr) 2007-08-01

Family

ID=35406714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05794654A Withdrawn EP1813009A1 (fr) 2004-11-17 2005-10-05 Pompe a carburant

Country Status (6)

Country Link
US (1) US20090101116A1 (fr)
EP (1) EP1813009A1 (fr)
JP (1) JP2008520176A (fr)
CN (1) CN101128971A (fr)
DE (1) DE102004055441A1 (fr)
WO (1) WO2006053801A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117498607B (zh) * 2023-12-29 2024-03-08 常州市一鑫电气有限公司 耐磨损高负载微型有刷电机

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE761245C (de) * 1941-03-15 1953-02-23 Duss & Bender Spezialfabrik Fu Elektromotor fuer Einhandbohrmaschinen
DE1272432B (de) * 1962-01-23 1968-07-11 Gen Precision Inc Gleichstrommotor
US3405293A (en) * 1966-04-19 1968-10-08 Mcculloch Corp Electrical starter for gasoline engines
DE2262569A1 (de) * 1972-12-21 1974-06-27 Bosch Gmbh Robert Foerderaggregat fuer fluessigkeiten
FR2331026A1 (fr) * 1975-11-05 1977-06-03 Mavilor Dynamo tachymetrique
DE2748550C2 (de) * 1977-10-28 1984-01-19 Interelectric AG, 6072 Sachseln Elektrische Maschine
JPS6019496Y2 (ja) * 1979-07-27 1985-06-12 株式会社安川電機 回転電機の電機子
US4591750A (en) * 1984-12-21 1986-05-27 Allied Corporation Compact ring shaped brush motor
JPS6267992U (fr) * 1985-10-21 1987-04-28
DE4341564A1 (de) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
DE9404601U1 (de) * 1994-03-18 1994-06-09 Robert Bosch Gmbh, 70469 Stuttgart Aggregat zum Fördern von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine
JP3623269B2 (ja) * 1994-04-15 2005-02-23 コールモージェン・コーポレーション アキシャル・エアギャップ・モータ
JP3921802B2 (ja) * 1997-12-08 2007-05-30 株式会社デンソー 回転電機
US6075300A (en) * 1998-07-08 2000-06-13 Siemens Canada Limited Combined armature and structurally supportive commutator for electric motors

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006053801A1 *

Also Published As

Publication number Publication date
US20090101116A1 (en) 2009-04-23
JP2008520176A (ja) 2008-06-12
WO2006053801A1 (fr) 2006-05-26
DE102004055441A1 (de) 2006-05-24
CN101128971A (zh) 2008-02-20

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Legal Events

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Owner name: CONTINENTAL AUTOMOTIVE GMBH

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Effective date: 20081210

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18D Application deemed to be withdrawn

Effective date: 20090421