EP1803926B1 - Fuel pump module - Google Patents

Fuel pump module Download PDF

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Publication number
EP1803926B1
EP1803926B1 EP20060127014 EP06127014A EP1803926B1 EP 1803926 B1 EP1803926 B1 EP 1803926B1 EP 20060127014 EP20060127014 EP 20060127014 EP 06127014 A EP06127014 A EP 06127014A EP 1803926 B1 EP1803926 B1 EP 1803926B1
Authority
EP
European Patent Office
Prior art keywords
fuel
fuel pump
pump module
impeller
passage
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.)
Not-in-force
Application number
EP20060127014
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1803926A1 (en
Inventor
Masaki Ueno
Akira Hayashi
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1803926A1 publication Critical patent/EP1803926A1/en
Application granted granted Critical
Publication of EP1803926B1 publication Critical patent/EP1803926B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • 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
    • F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/005—Varying behaviour or the very pump the pumps being of the circumferential flow type
    • 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

Definitions

  • the present invention relates to a fuel tank provided with a fuel pump module of the kind defined in the preamble of claim 1.
  • US 2005/274361 A discloses a fuel tank with a fuel pump module of this kind, wherein the fuel pump module is housed within a reserve cup or subtank contained in the fuel tank.
  • the fuel pump module is provided with an external pressure regulator which is arranged above the fuel pump module.
  • GB-A-1 309 926 discloses a fuel feed pump with roller vanes, which is provided with a pressure regulator in its lower part.
  • the object of the invention is to provide an improved fuel tank provided with a fuel pump module of the initially defined kind.
  • the impeller is attached on the side of one end of an output shaft of a drive motor and the on-demand pressure regulator is provided in the vicinity of a discharge port of the impeller.
  • the fuel pump module is configured by a cylindrical upper case for housing the drive motor and the impeller and a lower case for housing the on-demand pressure regulator, the upper case and the lower case are detachably configured, a snap fitting as a fitting member is formed in the lower case and a stopper fitted to the snap fitting is formed in the upper case.
  • the impeller for pressure-feeding fuel is arranged on the side of the bottom plate of the fuel tank according to the counter flow system, a fuel passage from the inlet of fuel to the discharge port can be greatly reduced. Besides, as a long fuel passage is not required, the loss of pressure due to passage resistance is reduced and the fuel pump module can be small-sized. Further, as a long fuel passage is not required, each part can be simplified and small-sized.
  • the on-demand pressure regulator can be arranged at the lower end of the fuel pump
  • the fuel pump module can be further small-sized.
  • the upper case and the lower case can be detached, the assembly of the fuel pump module and the maintenance of the on-demand pressure regulator and the drive motor are facilitated.
  • the upper case and the lower case can be easily attached or detached without using a separate connecting part such as a screw.
  • Fig. 1 is a sectional view showing a fuel pump module 1 according to one embodiment of the invention.
  • the fuel pump module 1 is a device for pressure-feeding gasoline and others in a fuel tank to a fuel injection system by the torque of a drive motor and is attached so that the substantial whole of the fuel pump module 1 is housed in a substantially circular opening provided to steel plates 12, 13 forming a bottom wall of the fuel tank in this embodiment.
  • the fuel pump module 1 is provided with a cylindrical upper case 4 and a lower case 36 respectively formed by hard resin and others.
  • the drive motor formed by a rotor 8 integrally rotated with an output shaft 6 and a stator 7 arranged inside the upper case 4 is housed.
  • An impeller 9 is fixedly supported at a lower end of the output shaft 6 and can be driven at arbitrary revolution speed by supplying electric power via a power terminal 3 integrated with a lid member 2 arranged on the upper case 4.
  • Electric power is supplied to the power terminal 3 by taking in external electric power by an onboard battery and the like from an electrode 11 provided outside the fuel tank and coupling an electrode 10 integrated with the electrode 11 and the power terminal 3 via a distribution cord (not shown) having a connector at both ends.
  • Fuel taken in from an inlet 15 provided to the upper case 4 according to the drive of the impeller 9 is fed to the impeller 9 via a passage 16.
  • the fuel discharged from the impeller 9 is pressure-fed from a discharge port 18 into a reservoir 37. That is, the impeller 9 practices a counter flow system in which fuel taken in from one side is discharged in the same direction as one side, the inlet 15 and the passage 16 function as an intake passage, and the discharge port 18 and the reservoir 37 function as a discharge passage.
  • the passage 17 communicating with space 23 for housing the rotor 8 is provided and when the impeller 9 is driven, the housing space 23 is filled with the fuel. Therefore, while the impeller 9 is driven, the rotor 8 and others are lubricated by fuel inside the housing space 23.
  • An on-demand pressure regulator 30 for supplying only a required fuel flow rate to control so that pressure generated in a fuel passage 19 is appropriate is arranged between the reservoir 37 and the fuel passage 19.
  • the on-demand pressure regulator 30 housed in the lower case 36 is configured by a spherical valve 31, a pressure regulating member 33 that fixedly supports a shaft touched to the valve 31 and a diaphragm 32, and a spring 34 for applying momentum for always pushing up the pressure regulating member 33 upward in the drawing.
  • the pressure regulating member 33 is pushed up upward in the drawing by the momentum of the spring 34 when the pressure generated in the fuel passage 19 is equal to or lower than a predetermined value.
  • the valve 31 is not touched to a wall of the reservoir 37 because the valve is pushed up upward by the pressure regulating member 33, the reservoir 37 and the fuel passage 19 are communicated with each other.
  • the device is configured so that pressing force depending upon pressure applied to the diaphragm 32 exceeds the momentum of the spring 34 when pressure applied to the fuel passage 19 exceeds the predetermined value, the pressure regulating member 33 is pushed down downward in the drawing, and the valve 31 abuts on the wall of the reservoir 37.
  • the communication of the reservoir 37 and the fuel passage 19 is broken and the supply of fuel to the fuel passage 19 is temporarily stopped.
  • the valve 31 is opened by the momentum of the spring 34 and the supply of fuel is resumed.
  • Fuel pressure-fed into the fuel passage 19 is discharged from a discharge port 22 formed in a holder 21 for connecting the lower case 36 and a fuel hose after the fuel passes a check valve 20.
  • the check valve 20 is provided to prevent the back flow of fuel and hold pressure generated in a passage on the opposite side of the discharge port 22.
  • the upper case 4 and the lower case 36 are configured so that they can be simply detached via a snap fitting structure.
  • a snap fitting 5 as a fitting member is formed in a cylindrical part inside the fuel tank.
  • the snap fitting 5 is configured so that the snap fitting is fitted to a stopper 35 formed on a periphery of the upper case 4, when the upper case 4 is pushed into the lower case 36, widening the snap fitting 5 in a peripheral direction, the stopper 35 is fitted to the snap fitting in a predetermined position, and the upper case 4 and the lower case 36 are connected to each other.
  • detaching work can be performed without using a connecting part such as a screw.
  • Fig. 2 is a sectional view showing an on-demand pressure regulator which can be applied to the fuel pump module according to one embodiment of the invention.
  • the on-demand pressure regulator shown in Fig. 2 may be also used.
  • a passage 50 into which fuel pressure-fed by the drive motor is taken in and a passage 51 for discharging fuel into fuel injection system and others are provided to an upper casing 41 of the on-demand pressure regulator 40.
  • the pressure regulating member 48 When pressure generated in the passage 51 is equal to or lower than a predetermined value, the pressure regulating member 48 is pushed up upward in the drawing by the momentum of the spring 47.
  • the reason therefor is that the momentum of the spring 47 is set so that it is larger than the momentum of the spring 44 and at this time, as the valve 43 is pushed up upward by the shaft 45 and the valve does not abut on a sealing part 49 formed in the upper casing 41, the passage 50, the reservoir 52 and the passage 51 are in communication with each other.
  • the fuel pump module As described above, according to the fuel pump module disclosed in the invention, as the impeller for pressure-feeding fuel is arranged on the side of the bottom plate of the fuel tank according to the counter flow system, the fuel passage from the inlet of the fuel to the discharge port is shortened and as a long fuel passage required when fuel discharged from an upper end of the fuel pump module is led to a lower end of the fuel pump module is not required, the fuel pump module can be small-sized. As the on-demand pressure regulator can be arranged at the lower end of the fuel pump module, the fuel pump module can be further small-sized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP20060127014 2005-12-28 2006-12-22 Fuel pump module Not-in-force EP1803926B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005377403A JP4428573B2 (ja) 2005-12-28 2005-12-28 燃料ポンプモジュール

Publications (2)

Publication Number Publication Date
EP1803926A1 EP1803926A1 (en) 2007-07-04
EP1803926B1 true EP1803926B1 (en) 2012-04-18

Family

ID=37846088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060127014 Not-in-force EP1803926B1 (en) 2005-12-28 2006-12-22 Fuel pump module

Country Status (6)

Country Link
EP (1) EP1803926B1 (enrdf_load_stackoverflow)
JP (1) JP4428573B2 (enrdf_load_stackoverflow)
CN (1) CN100462546C (enrdf_load_stackoverflow)
ES (1) ES2386454T3 (enrdf_load_stackoverflow)
MY (1) MY149677A (enrdf_load_stackoverflow)
TW (1) TW200726906A (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010116793A (ja) * 2008-11-11 2010-05-27 Mitsuba Corp 燃料供給装置
DE102010004614B4 (de) * 2010-01-13 2025-03-13 Vitesco Technologies GmbH Vorrichtung zur Bereitstellung von flüssigem Reduktionsmittel
TWI473739B (zh) * 2012-02-03 2015-02-21 Honda Motor Co Ltd 燃料泵對燃料槽之安裝構造
JP7221121B2 (ja) * 2019-04-18 2023-02-13 愛三工業株式会社 燃料供給装置
US11441523B1 (en) * 2021-04-16 2022-09-13 Delphi Technologies Ip Limited Fuel pump driven by an electric motor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH512671A (de) 1969-05-28 1971-09-15 Bosch Gmbh Robert Aus Pumpe und Elektromotor bestehende Hydraulikeinheit
JPS60212668A (ja) * 1984-04-05 1985-10-24 Nippon Denso Co Ltd モ−タ式燃料ポンプ
US6068454A (en) * 1998-04-06 2000-05-30 Ford Motor Company Fuel pump with helical impeller
EP1059436A1 (en) * 1998-12-28 2000-12-13 Mitsubishi Denki Kabushiki Kaisha Electric fuel pump
US7306715B2 (en) * 2002-08-05 2007-12-11 Denso Corporation Pump module
JP2004360678A (ja) * 2003-05-15 2004-12-24 Denso Corp 燃料ポンプ
JP4948775B2 (ja) 2004-06-14 2012-06-06 愛三工業株式会社 燃料供給装置

Also Published As

Publication number Publication date
TW200726906A (en) 2007-07-16
ES2386454T3 (es) 2012-08-21
CN100462546C (zh) 2009-02-18
JP2007177702A (ja) 2007-07-12
TWI314182B (enrdf_load_stackoverflow) 2009-09-01
MY149677A (en) 2013-09-30
EP1803926A1 (en) 2007-07-04
JP4428573B2 (ja) 2010-03-10
CN1991160A (zh) 2007-07-04

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