WO2015104818A1 - Module de pompe à carburant - Google Patents

Module de pompe à carburant Download PDF

Info

Publication number
WO2015104818A1
WO2015104818A1 PCT/JP2014/050225 JP2014050225W WO2015104818A1 WO 2015104818 A1 WO2015104818 A1 WO 2015104818A1 JP 2014050225 W JP2014050225 W JP 2014050225W WO 2015104818 A1 WO2015104818 A1 WO 2015104818A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
fuel pump
pump
stator
pump module
Prior art date
Application number
PCT/JP2014/050225
Other languages
English (en)
Japanese (ja)
Inventor
智幸 湧永
敏夫 小森
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2014/050225 priority Critical patent/WO2015104818A1/fr
Priority to JP2015556677A priority patent/JPWO2015104818A1/ja
Publication of WO2015104818A1 publication Critical patent/WO2015104818A1/fr

Links

Images

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
    • F02M37/14—Feeding by means of driven pumps the pumps being combined with other apparatus
    • 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
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks
    • 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
    • F02M2037/082—Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets

Definitions

  • the present invention relates to a fuel pump module that is held in an opening of a fuel tank of a motorcycle or the like and sends fuel out of the fuel tank.
  • a conventional fuel pump using a brushless motor has a stator part formed by covering a core made of a magnetic material around which a coil is wound with a resin material, and is rotatably disposed on the inner peripheral side of the core.
  • the rotor portion that rotates by receiving the magnetic field formed in the core when the coil is energized, the impeller fixed to the rotating shaft of the rotor, the pump case that rotatably accommodates the impeller, and the pump case on the outer peripheral side
  • the fuel pump is fixed to the container by holding the stator part and holding the stator part and covering the opening provided in the container.
  • the stator portion has a bearing holding portion that holds a bearing that is rotatably fitted to and supported by one end of the rotating shaft, and the shaft
  • the holding portion is formed by molding, and the flange portion is formed integrally with the stator portion when the stator portion is molded, and a suction filter is attached to the suction port of the fuel pump (for example, , See Patent Document 1).
  • the conventional fuel pump is configured as described above, and is configured to circulate fluid in the gap between the stator portion and the rotor portion.
  • this structure since the heat conduction distance between the winding and the fluid flow path is long and resin having poor heat conduction is usually used, there is a problem that the power loss increases due to the temperature rise of the winding. .
  • this conventional structure has a problem that the rotational resistance is large because the rotor portion rotates in the fluid.
  • a fuel pump module includes a stator portion in which a coil is wound in a winding groove of a stator core, a rotor portion that is rotatably supported in the stator portion, and a cylindrical shape that is formed on the inner peripheral surface of the stator.
  • a motor portion having a yoke to which the portion is fixed, and a pump portion that feeds fuel by an impeller that is driven to rotate by engaging with the rotor portion, and in the winding groove of the stator portion,
  • a through-hole flow path serving as a fluid passage through which fuel flows is provided.
  • the heat conduction distance between the winding and the fluid flow path can be shortened, an increase in the temperature of the winding can be suppressed.
  • the winding resistance value can be kept small, the power loss in the winding can be kept low, and the fuel pump efficiency can be increased.
  • the magnetic circuit of the stator core constituting the magnetic circuit is not narrowed, the performance of the fuel pump does not deteriorate.
  • the flow resistance is small and the stirring loss can be eliminated.
  • FIG. 1 It is an external appearance perspective view of the fuel pump module in Embodiment 1 of this invention. It is a longitudinal cross-sectional view of the fuel pump module in FIG. 1 is a perspective view of a fuel pump in Embodiment 1.
  • FIG. 2 is an exploded perspective view of a fuel pump in Embodiment 1.
  • FIG. It is a top view of the stator part of FIG. It is the top view which attached the coil to FIG.
  • FIG. 4 is a cross-sectional view taken along line AA of the fuel pump in FIG. 3.
  • FIG. 1 is an external perspective view of a fuel pump module according to Embodiment 1 of the present invention.
  • a fuel pump module 101 is an insulating resin comprising an upper case 1a, a discharge pipe 1b to which a fuel hose to an injector (not shown) and the like are connected, a return pipe 1c, and a connector 1d by integral molding.
  • a flange 1 is provided.
  • the fuel pump module 1 is fixed to the flange 1 and the upper case 1a to form a filter case 51.
  • the fuel pump module 1 is engaged with the lower case 2 formed of an insulating resin and the lower case 2 by, for example, snap fitting.
  • a pump holder 3 that holds a fuel pump, which will be described later, a suction filter 4 that is inserted through an opening of the pump holder 3 and is fitted into a suction port of the fuel pump, and is attached to a side surface of the lower case 2.
  • the liquid level detector 5 is provided with a float 5a for detecting the oil level of the fuel in the fuel tank.
  • the lead wire 6 from the connector 1d is provided for driving connected to the fuel pump, for signals connected to the liquid level detector 5, and for grounding to be described later.
  • FIG. 2 is a longitudinal sectional view of the fuel pump module of FIG.
  • the fuel pump module 101 is accommodated in the fuel tank 99 of the vehicle so that the flange 1 closes the opening 99 a of the fuel tank 99.
  • the fuel 100 sucked from the fuel tank 99 by the fuel pump 7 is supplied to the injector (not shown) side through the high-pressure filter 8 included in the upper case 1a.
  • the suction filter 4 the contaminants in the fuel tank 99 are removed, and those that cannot be removed can be captured by the high-pressure filter 8. Further, the pressure of the fuel supplied to the injector is maintained at a predetermined value by the pressure regulator 9.
  • surplus fuel is discharged from the pressure regulator 9 via the return pipe 1 c and reaches the suction filter 4.
  • a cushion rubber 13 is provided to discharge the surplus fuel and to hold the fuel pump 7 in the pump holder 3.
  • the assembly procedure of the fuel pump module 101 will be described.
  • the high-pressure filter 8 By inserting the high-pressure filter 8 from the lower side on the paper surface of the upper case 1a and bringing it into contact with the ceiling of the upper case 1a, the high-pressure filter 8 and the discharge pipe 1b communicate with each other, and the upper case 1a and the high-pressure filter 8 The lower end surfaces are flush with each other.
  • the lower case 2 By attaching the lower case 2 to the lower end surface by, for example, hot plate, not only the upper case 1a and the lower case 2 are fixed, but also the high pressure filter 8 is fixed. What is formed by fixing the lower case 2 is called a filter case 51.
  • the pressure regulator 9 is liquid-tightly fitted to the return flow path end 2 a of the lower case 2 through the O-ring 11. Thereafter, the engagement hole 3c of the pump holder 3 is engaged with the engagement protrusion 2b, whereby the lower case 2 (filter case 51) and the pump holder 3 are snap-fit engaged. As a result of this engagement, the pressure regulator 9 is held by the pump holder 3, and the connection pipe 12 that is attached to the discharge port 7 c of the fuel pump 7 is liquid-tightly connected to the fuel suction port 2 c provided in the lower case 2. Will be fitted. The fuel inlet 2c communicates with the element 8a. As a result, a fuel flow path from the suction filter 4 to the discharge pipe 1b is secured. By attaching the liquid level detector 5 to this and connecting the lead wire 6 to the connector 1d, the fuel pump module 101 described in FIG. 1 is assembled.
  • the high pressure filter 8 and the pressure regulator 9 are incorporated in the fuel pump module 101.
  • the present invention is not necessarily limited to this, and either one or both of the high-pressure filter 8 and the pressure regulator 9 are disposed outside the fuel tank 99, that is, between the fuel pump module 101 and the injector. Also good.
  • FIG. 3 is a perspective view of the fuel pump in the first embodiment.
  • FIG. 4 is a longitudinal sectional view of the fuel pump in FIG.
  • FIG. 5 is an exploded perspective view of the fuel pump in FIG.
  • the fuel pump 7 is, for example, an in-tank pump that is mounted in a fuel tank of a vehicle or the like.
  • the fuel pump 7 sucks fuel in the fuel tank and supplies it to an engine that is a fuel consuming device.
  • the fuel pump 7 includes a pump unit 50 that boosts the intake fuel and a motor unit 60 including a stator unit 61 that drives the pump unit 50.
  • the pump unit 50 includes a pump cover 14, a pump base 16, and an impeller (rotating member) 20.
  • the pump base 16 and the pump cover 14 are formed by die-casting aluminum, for example.
  • the pump base 16 and the pump cover 14 constitute one casing member (not numbered).
  • An impeller (rotating member) 20 is rotatably accommodated inside the casing member.
  • the motor unit 60 constitutes a direct current motor, and includes a stator unit 61 and a rotor unit 40.
  • the pump base 16 is press-fitted and fixed inside one end of the yoke 10.
  • a pump cover 14 is fixed to one end of the yoke 10 by caulking or the like while covering the pump base 16.
  • a bearing 25 is fitted in the center of the pump base 16.
  • a thrust bearing 26 is press-fitted and fixed at the center of the pump cover 14.
  • the cylindrical yoke 10 that houses the motor unit 60 and the pump unit 50 has thin portions 21 and 22 on both ends in the axial direction, and has a thick portion 23 between the thin portions 21 and 22. .
  • the thin portions 21 and 22 are caulking and fixing the pump cover 14 and the cover-out 18.
  • 6 is a schematic plan view of the stator portion 61 of FIG. 4, and
  • FIG. 7 is a plan view in which the coil 61b is attached to FIG. In FIG. 6 and FIG. 7, illustration of the rotor unit 40 is omitted, and only the stator unit 61 is illustrated.
  • FIG. 8 is a cross-sectional view taken along line AA of the fuel pump in FIG.
  • the motor unit 60 employs a brushless motor. As shown in FIG.
  • the motor part 60 is fitted in the center with a stator core 61a made of a magnetic material, a stator part 61 made of a coil 61b wound around the stator core 61a, and a plastic magnet 40a molded into a cylindrical shape.
  • the rotor portion 40 is composed of a shaft 41 inserted.
  • the stator portion 61 switches the magnetic poles formed in the circumferential direction on the inner peripheral surface of the stator core 61a by controlling the current flowing in the coil 61b wound around the stator core 61a.
  • the rotor portion 40 in which the shaft 41 is rotatably supported by the thrust bearing 26 is rotatably installed on the inner periphery of the stator core 61a, and forms magnetic poles that are alternately different in the rotation direction on the outer peripheral surface facing the stator core 61a. Is so magnetized.
  • the stator core 61a is formed by fixing a plurality of magnetic steel plates laminated in the axial direction.
  • the stator core 61a is provided with an insulator 61c made of an insulating material so as to cover the surface thereof.
  • a coil 61b is wound around the insulator 61c.
  • the coil 61b is supplied with a three-phase alternating current from a control device (not shown) and, for example, star-connected so as to generate a rotating magnetic field in the circumferential direction, and will be described later with three load terminals 63a, 63b, 63c (see FIG. 3). It is connected to the.
  • the load terminals 63a, 63b, and 63c are engaged with the stator terminals 64a, 64b, and 64c, and power is supplied to the stator.
  • Stator core 61a, stator portion 61 including coil 61b, and load terminals 63a, 63b, 63c electrically connected to coil 61b are molded by being integrally inserted with a thermoplastic resin such as polyacetal resin, for example. .
  • a thermoplastic resin such as polyacetal resin, for example.
  • the through-hole flow path 70 of the stator portion 61 is formed, for example, by inserting a metal rod into a portion of the winding groove 61d where the coil 61b is not wound and filling the resin material, and then extracting the metal rod. Alternatively, it can also be formed by, for example, drilling a through hole with a drill after filling the winding groove 61d with resin.
  • By forming the through-hole flow path 70 by covering the surface of the coil 61b with resin the unevenness of the through-hole flow path 70 is small, so there is an effect that the fluid resistance is reduced and consequently the fluid resistance can be reduced.
  • a plurality of through-hole flow paths 70 are provided. For example, in FIG.
  • twelve through-hole flow paths 70 are provided in the winding groove 61d.
  • the through-hole flow path 70 may be provided in all the winding grooves 61d, or may be partially provided in a part of the winding grooves 61d.
  • the shape of the through-hole channel 70 is, for example, a tube shape.
  • concentric flow path grooves 71 connected through the through-hole flow path 70 are respectively provided on the upper surface and the lower surface of the resin-molded stator portion 61.
  • a large number of blade grooves are formed in the outer peripheral edge portion of the impeller (rotating member) 20 formed in a disk shape.
  • the impeller (rotating member) 20 is rotated together with the shaft 41 of the rotor unit 40 by the rotation of the rotor unit 40, a pressure difference is generated by the fluid frictional force before and after the blade groove of the impeller (rotating member) 20, and this is caused by a large number of blades.
  • the fuel in the pump flow path 14a is pressurized by repeating in the groove.
  • the fuel is discharged from the fuel pump 7 to the engine side through the groove 71, the through-hole flow path 70, the flow path groove 71 on the upper surface of the stator 61, and the fuel passage 19 of the cover-out 18.
  • the flange 1 includes a discharge pipe 1b for sending pressurized fuel to an engine (not shown) via a fuel pipe (not shown), and a connector 1d for supplying power to the coil 61b, for example, PPS (Poly Phenylene Sulfide) It is formed by integral molding with a thermoplastic resin material such as resin or POM (polyacetal or polyoxymethylene) resin.
  • the flange 1 is formed in a flat plate shape orthogonal to the axial direction (vertical direction in FIG. 1), is fitted into the circular opening 99 a of the fuel tank 99, and the flat plate portion is connected to the outer surface of the fuel tank 99.
  • the gasket 17 is fixed to the fuel tank 99 by fastening with a fixing bracket (not shown) or the like in a state where the packing 17 is sandwiched between the two.
  • a drive current is supplied from the control circuit (not shown) to the coil 61b through the lead wire 6 and the load terminals 63a, 63b, 63c from the connector 1d, and a rotating magnetic field is generated on the facing surface of the stator unit 61 facing the rotor unit 40.
  • the rotor part 40 rotates following the rotating magnetic field of the stator part 61, the impeller (rotating member) 20 engaged with the shaft 41 of the rotor part 40 also rotates, and the swirl flow in the C-shaped pump flow path 14a. Will occur.
  • the fuel 100 in the fuel tank 99 flows in from the suction port 14b provided in the pump cover 14 via the suction filter 4, and is increased in pressure while flowing in the pump flow path 14a by the rotation of the impeller (rotating member) 20. Pumped to the part 60 side (above the pump part 50 in FIG. 5).
  • the fuel 100 pumped to the motor unit 60 side passes through the through-hole channel 70 provided in the winding groove 61 d of the stator unit 61 and is supplied to the fuel passage 1 e formed in the flange 1 through the high-pressure filter 8. .
  • the fuel flowing into the fuel passage 1e is adjusted to a desired pressure by the pressure regulator 9 and discharged from the discharge pipe 1b to an internal combustion engine such as a vehicle engine (not shown).
  • the motor unit 60 in FIG. 4 is an inner rotor type in which the rotor unit 40 is disposed on the inner side of the stator unit 61, but an outer rotor type in which the rotor unit 40 is disposed on the outer side of the stator unit 61 may be configured similarly. Can do. In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.

Landscapes

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

Abstract

La présente invention se rapporte à un module de pompe à carburant conçu de sorte qu'une augmentation de la température de fils de bobinage soit supprimée et de sorte que l'efficacité d'une pompe à carburant soit améliorée. Un module de pompe à carburant est doté : d'une section moteur (60) possédant des sections stator (61) qui sont formées par des enroulements de bobinage (61b) dans des rainures de bobinage (61d) dans des noyaux (61a) de stator, la section moteur (60) comportant également une section rotor (40) qui est supportée rotative dans les sections stator (61), la section moteur (60) comportant en outre une culasse (10) qui a une forme cylindrique et qui a les sections stator (61) fixées à la surface périphérique intérieure de la culasse (10) ; et d'une section pompe (50) destinée à acheminer le carburant à l'aide d'un impulseur (20) en prise avec la section rotor (40) et entraîné et mis en rotation. Des passages d'écoulement (70) à trous traversants servant de passages de fluide par lesquels s'écoule le carburant sont disposés dans les rainures de bobinage (61d) dans les sections stator (61).
PCT/JP2014/050225 2014-01-09 2014-01-09 Module de pompe à carburant WO2015104818A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2014/050225 WO2015104818A1 (fr) 2014-01-09 2014-01-09 Module de pompe à carburant
JP2015556677A JPWO2015104818A1 (ja) 2014-01-09 2014-01-09 燃料ポンプモジュール

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/050225 WO2015104818A1 (fr) 2014-01-09 2014-01-09 Module de pompe à carburant

Publications (1)

Publication Number Publication Date
WO2015104818A1 true WO2015104818A1 (fr) 2015-07-16

Family

ID=53523668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/050225 WO2015104818A1 (fr) 2014-01-09 2014-01-09 Module de pompe à carburant

Country Status (2)

Country Link
JP (1) JPWO2015104818A1 (fr)
WO (1) WO2015104818A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826734A (zh) * 2019-03-28 2019-05-31 众恒汽车部件有限公司 酒精燃料摩托车油泵总成

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0354365U (fr) * 1989-06-01 1991-05-27
JPH10271738A (ja) * 1997-03-21 1998-10-09 Shibaura Eng Works Co Ltd ポンプ用モータ
US6068454A (en) * 1998-04-06 2000-05-30 Ford Motor Company Fuel pump with helical impeller
JP2007127013A (ja) * 2005-11-02 2007-05-24 Denso Corp 燃料ポンプ
JP2010540823A (ja) * 2007-09-27 2010-12-24 コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツング タンクから内燃機関に燃料を圧送するための燃料ポンプ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0354365U (fr) * 1989-06-01 1991-05-27
JPH10271738A (ja) * 1997-03-21 1998-10-09 Shibaura Eng Works Co Ltd ポンプ用モータ
US6068454A (en) * 1998-04-06 2000-05-30 Ford Motor Company Fuel pump with helical impeller
JP2007127013A (ja) * 2005-11-02 2007-05-24 Denso Corp 燃料ポンプ
JP2010540823A (ja) * 2007-09-27 2010-12-24 コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツング タンクから内燃機関に燃料を圧送するための燃料ポンプ

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109826734A (zh) * 2019-03-28 2019-05-31 众恒汽车部件有限公司 酒精燃料摩托车油泵总成
CN109826734B (zh) * 2019-03-28 2024-01-05 众恒汽车部件有限公司 酒精燃料摩托车油泵总成

Also Published As

Publication number Publication date
JPWO2015104818A1 (ja) 2017-03-23

Similar Documents

Publication Publication Date Title
JP6476002B2 (ja) 電子制御装置、電動機用制御装置及び電動流体ポンプ
US8622722B2 (en) Fuel pump
JP4623217B2 (ja) 燃料供給ポンプ
US7560839B2 (en) Electric motor and fuel pump having the same
US20050074343A1 (en) Electrically driven motors and pumps having such motors
JP5672510B2 (ja) ブラシレスモータ、および、それを用いた燃料ポンプ
JP4696855B2 (ja) 燃料ポンプ
US20050220641A1 (en) Fuel pump, fuel supply equipment using fuel pump and method for manufacturing fuel pump
JP2012031808A (ja) 燃料ポンプ
JP5488654B2 (ja) 燃料ポンプ
US20070122300A1 (en) Electric fuel pump
JP4305951B2 (ja) 燃料ポンプ
JP2012031807A (ja) 燃料ポンプ
US7814889B2 (en) Electric fuel pump
JP2007159191A (ja) 電動機
US5971687A (en) Fuel pump and method of manufacturing the same
WO2015104818A1 (fr) Module de pompe à carburant
US10408219B2 (en) Fuel pump
JP2007187145A (ja) 燃料ポンプ
JP4158154B2 (ja) 電動機およびそれを用いた燃料ポンプ
JP2015151985A (ja) 電動流体ポンプ
JP2005204387A (ja) 整流子とそれを用いた電動機および燃料ポンプ
US20160369818A1 (en) Fuel pump
JPH07259676A (ja) 電動式燃料ポンプ
JP4711232B2 (ja) 燃料ポンプおよびその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14878004

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2015556677

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14878004

Country of ref document: EP

Kind code of ref document: A1