EP2240680B1 - Pompe à jet - Google Patents

Pompe à jet Download PDF

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Publication number
EP2240680B1
EP2240680B1 EP08872005.7A EP08872005A EP2240680B1 EP 2240680 B1 EP2240680 B1 EP 2240680B1 EP 08872005 A EP08872005 A EP 08872005A EP 2240680 B1 EP2240680 B1 EP 2240680B1
Authority
EP
European Patent Office
Prior art keywords
suction
jet pump
valve member
suction jet
opening
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
EP08872005.7A
Other languages
German (de)
English (en)
Other versions
EP2240680A1 (fr
Inventor
Pavel Smid
Radek Malec
Karsten Scholz
Jiri Kadlec
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2240680A1 publication Critical patent/EP2240680A1/fr
Application granted granted Critical
Publication of EP2240680B1 publication Critical patent/EP2240680B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/02Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025Feeding by means of a liquid fuel-driven jet pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46Arrangements of nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M37/10Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • Y10T137/86035Combined with fluid receiver
    • Y10T137/86043Reserve or surge receiver
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • Y10T137/86075And jet-aspiration type pump
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • Y10T137/86171With pump bypass
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/87571Multiple inlet with single outlet
    • Y10T137/87587Combining by aspiration
    • Y10T137/87643With condition responsive valve

Definitions

  • the invention relates to a suction jet pump according to the preamble of the main claim.
  • suction jet pump from the DE 103 03 390 A1 known, with a tether, which opens via a jet outlet in a suction chamber, wherein the suction chamber has a cooperating with a valve member suction port through which fluid can be sucked into the suction chamber.
  • the valve member forms an intake valve together with the intake opening.
  • the suction jet pump is driven by a drive current flowing over the drive line.
  • the suction jet pump is arranged in a storage container and sucks fuel from a fuel tank into the storage tank. At low levels in the fuel tank, it may happen that some air is sucked in and passed into the storage tank, which leads to a foaming in the storage tank. However, the foam with its large volume displaces fuel, which can lead to a partial emptying of the storage container. This effect is also called dynamic leakage.
  • a characteristic of the suction jet pump which represents the intake volume flow as a function of the driving current, runs comparatively steeply. Strong foaming occurs only from a critical negative pressure field in the intake of the suction jet pump, which is referred to below as the foam boundary.
  • a suction jet pump is known, with a drive line, which has upstream of the jet outlet, a pressure relief valve, which can flow fuel from a predetermined pressure in the lead line via a valve outlet directly into the storage tank.
  • suction jet pump is off EP 0 806 318 A2 known.
  • the suction jet pump according to the invention with the characterizing features of the main claim has the advantage that the foam formation is avoided or at least reduced by the treble line has a bypass opening opening into the suction chamber, which is arranged such that its bypass flow acts on the valve member. In this way one becomes additional, directly dependent on the drive current flow resistance produced at the intake, so that the characteristic of the ejector runs flatter than in the prior art.
  • the suction jet pump can thus be designed so that their suction or their intake flow in the desired drive current range is above the minimum power and below the foam limit.
  • the bypass opening is arranged in the region above the valve member.
  • the tether with an end portion extends into the suction chamber, wherein the bypass opening is provided in the end portion.
  • valve member is provided in sections in the suction chamber, since in this way the liquid flowing through the bypass opening can best act on the valve member.
  • valve member umbrella-shaped since such a valve is particularly inexpensive to manufacture, reliably seals and has a large effective area for the flow of the bypass opening.
  • the drawing shows in section an inventive suction jet pump.
  • the suction jet pump has a drive line 1, which opens via a jet outlet 2 into a suction chamber 3.
  • the jet output 2 is designed, for example, narrows nozzle-shaped.
  • a mixing channel 4 is arranged, which is arranged in an imaginary extension of the jet outlet 2, such that a fluid jet emerging from the jet outlet 2 of the haulage 1 passes straight through the suction chamber 3 into the mixing channel 4.
  • the cross sections of the beam exit 2 and the mixing channel 4 therefore overlap in the projection.
  • a blowing current is introduced into the suction chamber 3 in the form of a jet.
  • the motive flow is any liquid, but could in principle also be a gas.
  • the propulsion jet of the haulage line 1 entrains surrounding fluid from the suction chamber 3 into the mixing channel 4. This creates a negative pressure in the suction chamber 3, which allows fluid to flow into the suction chamber 3 via a suction opening 5 of the suction chamber 3 from the vicinity of the suction jet pump.
  • a valve member 6 is provided, which cooperates with the suction port 5 and forms a check valve with this.
  • the valve member 6 is designed umbrella-shaped according to the embodiment, but may also be arbitrarily different, for example T-shaped, double-T-shaped, conical, spherical, disc-shaped or cylindrical.
  • the valve member 6 may be elastic or rigid.
  • the treble line 1 has a bypass opening 10 opening into the suction chamber 3, which is arranged such that its bypass flow acts directly or indirectly on the valve member 6.
  • the bypass flow acts on the valve member 6 in a closing manner, ie opposite to the opening direction of the check valve.
  • the bypass opening 10 is directed onto the valve member 6 such that the jet or the flow of the bypass opening 10 strikes the valve member 6. At least it is provided that the volume flow of the bypass opening 10, the valve member 6 flows over and thereby exerts flow forces on this.
  • the bypass opening 10 is designed and arranged such that its bypass flow exerts such a high force on the valve member 6 that the valve member 6 is movable in the direction of its valve seat.
  • the bypass opening 10 may be designed such that the valve member 6 is completely closable by means of the bypass flow of the bypass opening 10.
  • the diameter of the bypass opening 10 must be smaller than that of the line output 2 of the treble line. 1
  • suction jet pump which represents the volume flow drawn in via the suction opening 5 as a function of the blowing current, is thereby flatter than in the prior art.
  • the suction jet pump can thereby be designed so that their suction power in the desired drive current range is above the minimum power and below the critical foam limit. Due to the construction according to the invention, foam formation downstream of the mixing channel 4 is avoided or at least reduced by suction of air. It is achieved a self-regulating suction jet pump.
  • the tether 1 extends with a section 1.1 into the suction chamber 3, wherein the bypass opening 10 is located in the section 1.1. Upstream of the section 1.1, for example, a 1.2 relative to the section angled section is executed, wherein the bypass opening 10 is arranged for example in the region of the bend.
  • the bypass opening 10 is formed, for example, on the bottom 14 of the section 1.1 facing the bottom.
  • the suction opening 5 is provided at the bottom 14 in the region below the bypass opening 10.
  • the bypass opening 10 has an axis 10. 1 which is aligned with the intake opening 5 or the valve member 6 and can run perpendicular or obliquely with respect to the floor 14.
  • the axis 10. 1 can be aligned with the axis of the intake opening 5.
  • the suction opening 5 can also be arranged offset to the bypass opening 10.
  • the suction jet pump is provided in a pot-shaped storage container 11, which is arranged in a storage container 12.
  • the suction chamber 3 of the suction jet pump is designed, for example, open on one side and rests with the open side on a bottom 14 of the storage container 11, whereby the open side of the suction chamber 3 is closed.
  • the suction port 5 of the suction chamber 3 is provided according to the embodiment on the bottom 14 of the storage container 11, but could also be embodied on the housing of the suction jet pump.
  • the check valve formed from the suction port 5 and the valve member 6 prevents backflow of liquid from the storage tank 11 via the mixing channel 4 and the suction chamber 3 back into the reservoir 12th
  • the mixing channel 4 extends horizontally in the direction of the bottom 14 of the storage container 11.
  • the suction jet pump In the suction jet pump according to the invention, a portion of the drive current flows via the jet outlet 2 and a remaining part of the drive current via the bypass opening 10 respectively into the suction chamber 3.
  • the part flowing through the bypass opening 10 generates at the check valve an additional flow resistance or pressure loss, the value of the amount of fuel is dependent.
  • the larger the drive current the greater the pressure loss generated.
  • the bypass flow of the bypass opening 10 is sucked in and, as well as the suction flow sucked in via the suction opening 5, flows with the flow of the propelling jet via the mixing channel 4 into the storage vessel 11.
  • the suction jet pump according to the invention Fig.1 can be used, for example, in a device for conveying fuel.
  • This has, for example, a delivery unit 16, which sucks fuel from the storage tank 11 and pressure increases via a pressure line 17 to a Internal combustion engine 18 promotes.
  • the treble line 1 branches off, wherein a pressure control valve 19 may be provided, which only from a predetermined pressure fuel from the pressure line 17 can flow into the haulage line 1.
  • the storage tank 11 holds for the delivery unit 16 sufficient fuel, so that it can suck fuel even at low levels in the fuel tank 12 and when accelerating, braking, cornering and / or driving uphill.
  • a partial emptying of the storage container 11 is avoided by sucking air and thereby causing foaming.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (6)

  1. Pompe à jet avec une conduite motrice (1), qui débouche dans une chambre d'aspiration (3) par une sortie de jet (2), dans laquelle la chambre d'aspiration (3) présente une ouverture d'aspiration (5) coopérant avec un organe de soupape (6), à travers laquelle du fluide peut être aspiré dans la chambre d'aspiration (3), caractérisée en ce que la conduite motrice (1) présente une ouverture de dérivation (10) débouchant dans la chambre d'aspiration (3), qui est disposée de telle manière que son courant de dérivation agisse sur l'organe de soupape (6).
  2. Pompe à jet selon la revendication 1, caractérisée en ce que l'ouverture de dérivation (10) est disposée dans la région située au-dessus de l'organe de soupape (6) .
  3. Pompe à jet selon la revendication 1, caractérisée en ce que la conduite motrice (1) pénètre avec une partie d'extrémité (1.1) dans la chambre d'aspiration (3), dans laquelle l'ouverture de dérivation (10) est prévue dans la partie d'extrémité (1.1).
  4. Pompe à jet selon la revendication 1, caractérisée en ce que l'organe de soupape (6) est prévu en partie dans la chambre d'aspiration (3).
  5. Pompe à jet selon la revendication 1, caractérisée en ce que l'organe de soupape (6) est réalisé en forme de parapluie, de sphère, de disque ou de cylindre.
  6. Dispositif pour transporter du carburant avec une pompe à jet selon l'une quelconque des revendications précédentes.
EP08872005.7A 2008-02-01 2008-12-09 Pompe à jet Not-in-force EP2240680B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008007204.4A DE102008007204B4 (de) 2008-02-01 2008-02-01 Saugstrahlpumpe
PCT/EP2008/067068 WO2009095132A1 (fr) 2008-02-01 2008-12-09 Pompe à jet

Publications (2)

Publication Number Publication Date
EP2240680A1 EP2240680A1 (fr) 2010-10-20
EP2240680B1 true EP2240680B1 (fr) 2017-11-01

Family

ID=40380499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872005.7A Not-in-force EP2240680B1 (fr) 2008-02-01 2008-12-09 Pompe à jet

Country Status (5)

Country Link
US (1) US8511340B2 (fr)
EP (1) EP2240680B1 (fr)
CN (1) CN101932820B (fr)
DE (1) DE102008007204B4 (fr)
WO (1) WO2009095132A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8459960B2 (en) * 2009-02-09 2013-06-11 Robert Bosch Gmbh Jet pump assembly
DE102010031548A1 (de) * 2010-07-20 2012-01-26 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff
CH704875B1 (de) 2011-04-16 2015-05-15 Schwanden Kunststoff Ejektorpumpe für einen Treibstofftank.
DE102011075230A1 (de) * 2011-05-04 2012-11-08 Robert Bosch Gmbh Strahlpumpe zum Fördern von Kraftstoff
KR102135841B1 (ko) 2011-05-10 2020-07-22 코닌클리케 필립스 엔.브이. 높은 다이내믹 레인지 이미지 신호의 생성 및 처리
US8726886B2 (en) * 2011-08-24 2014-05-20 Robert Bosch Gmbh Fuel supply system and anti-siphon jet pump
EP3063415A1 (fr) * 2013-10-18 2016-09-07 Ellehammer A/S Pompe à éjecteur
JP2015148214A (ja) 2014-02-07 2015-08-20 京三電機株式会社 バルブ構造体及び燃料供給装置
JP6287749B2 (ja) * 2014-10-13 2018-03-07 株式会社デンソー ジェットポンプ及びその製造方法、並びに燃料供給装置
WO2017165863A1 (fr) * 2016-03-25 2017-09-28 Chien-Hua Wang Dispositif du type buse
DE102017203877A1 (de) * 2017-03-09 2018-09-13 Polytec Plastics Germany Gmbh & Co. Kg Geschaltete Saugstrahlpumpe
EP3505772B1 (fr) * 2017-12-29 2021-04-07 TI Automotive Technology Center GmbH Agencement de pompe à jet aspirant
US11401953B2 (en) * 2018-04-30 2022-08-02 Eaton Intelligent Power Limited Fluid conduit and method of making same
WO2020106430A1 (fr) * 2018-11-20 2020-05-28 Walbro Llc Ensemble pompe à carburant doté d'une pompe à carburant à moteur électrique et d'une pompe à carburant entraînée par un fluide
DE102021105492A1 (de) * 2021-03-08 2022-09-08 Bayerische Motoren Werke Aktiengesellschaft Ansaugkammer und Saugstrahlpumpe

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US5667366A (en) 1995-12-01 1997-09-16 Vernay Laboratories, Inc. Jet pump including flexible venturi
DE19618649A1 (de) * 1996-05-09 1997-11-13 Bosch Gmbh Robert Kraftstoffördereinrichtung eines Kraftfahrzeuges
FR2769054B1 (fr) * 1997-10-01 2001-12-07 Marwal Systems Pompe a jet comprenant un gicleur de section variable
DE19828934C2 (de) 1998-06-29 2002-09-19 Bosch Gmbh Robert Vorrichtung zur Kraftstoff-Förderung mittels einer Kraftstoff-Fördereinheit
DE19856298C1 (de) * 1998-12-07 2000-02-17 Bosch Gmbh Robert Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeuges
DE10027650A1 (de) * 2000-06-03 2002-08-29 Siemens Ag Kraftstoffördereinheit
DE10129437A1 (de) 2001-06-19 2003-01-02 Bosch Gmbh Robert Kraftstoffversorgungseinrichtung für ein Kraftfahrzeug
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US6951208B2 (en) * 2003-10-22 2005-10-04 Siemens Vdo Automotive Corporation Fuel delivery system with flow re-director for improved re-priming sequence
DE102005018469A1 (de) * 2005-04-21 2006-11-02 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff aus einem Kraftstofftank zur Brennkraftmaschine eines Kraftfahrzeuges
EP2016275B1 (fr) 2006-05-01 2011-11-02 Continental Automotive Systems US, Inc. Pompe à carburant avec amorçage de canal intérieur

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Also Published As

Publication number Publication date
US8511340B2 (en) 2013-08-20
WO2009095132A1 (fr) 2009-08-06
DE102008007204A1 (de) 2009-08-06
CN101932820A (zh) 2010-12-29
DE102008007204B4 (de) 2018-04-19
US20100319793A1 (en) 2010-12-23
EP2240680A1 (fr) 2010-10-20
CN101932820B (zh) 2013-08-21

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