EP1831536B1 - Dispositif de transport destine au transport de carburant a partir d'un reservoir de carburant - Google Patents

Dispositif de transport destine au transport de carburant a partir d'un reservoir de carburant Download PDF

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Publication number
EP1831536B1
EP1831536B1 EP05794479A EP05794479A EP1831536B1 EP 1831536 B1 EP1831536 B1 EP 1831536B1 EP 05794479 A EP05794479 A EP 05794479A EP 05794479 A EP05794479 A EP 05794479A EP 1831536 B1 EP1831536 B1 EP 1831536B1
Authority
EP
European Patent Office
Prior art keywords
fuel
delivery device
jet pump
swirl pot
valve
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.)
Expired - Fee Related
Application number
EP05794479A
Other languages
German (de)
English (en)
Other versions
EP1831536A1 (fr
Inventor
Lothar Dickenscheid
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 EP1831536A1 publication Critical patent/EP1831536A1/fr
Application granted granted Critical
Publication of EP1831536B1 publication Critical patent/EP1831536B1/fr
Expired - Fee Related 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
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • 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
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86187—Plural tanks or compartments connected for serial flow
    • Y10T137/86196—Separable with valved-connecting passage

Definitions

  • the invention relates to a conveyor for conveying fuel from a fuel tank to an internal combustion engine of a motor vehicle with a fuel pump, with a bottom valve having swirl pot and with a suction jet pump, wherein a suction port of the suction jet pump is connected to the fuel tank.
  • Such conveyors are commonly used in today's vehicles and are known in practice (see, for example, the DE-A-100.28.458 ,
  • the fuel pump usually promotes fuel from the swirl pot via a flow line to the internal combustion engine.
  • the suction jet pump is supplied with fuel as blowing agent via fuel returned by the internal combustion engine or via a branch of the supply line.
  • the suction jet pump is used to pump fuel from the fuel tank into the swirl pot.
  • the promotion of the ejector only starts when fuel from the surge pot can be promoted by the fuel pump.
  • a disadvantage of the known conveyor is that at a Treatmentbe spallung or refilling after a complete emptying of the fuel tank, a large amount of fuel must be poured into the fuel tank, so that the swirl pot is also filled. Only then can the fuel pump suck in fuel and operate the ejector pump. For a very large area of the bottom of the fuel tank, the initial charge requires several liters of fuel. In practice it has been shown that for the initial filling a level of 18 mm in the fuel tank is required for the fuel pump to prime fuel.
  • the invention is based on the problem of minimizing the amount of fuel that is necessary in the initial filling.
  • the fuel pump is able to directly suck in fuel via the suction connection of the suction jet pump and the mixing tube from the fuel tank.
  • the suction pressure is sufficient when the fuel pump.
  • An operation of the suction jet pump is not required for this purpose.
  • the ejector pump is also supplied with fuel as propellant. In practice, it has been found that with the conveyor according to the invention for a delivery of fuel, a filling level of 3 mm in the fuel tank is sufficient.
  • the fuel pump can suck fuel directly out of the baffle when in a connection of the mixing tube with the swirl pot an opening into the swirl pot overflow valve is arranged.
  • the control of the overflow valve as a function of the level in the swirl pot is particularly simple according to another advantageous embodiment of the invention, when the spill valve has a float arranged in the swirl pot and from the float above a designated level in the swirl pot in the open position and below the intended level can be switched into the closed position.
  • connection of the baffle with the suction port of the fuel pump is opened according to another advantageous embodiment of the invention even at low levels in the swirl pot when the float of the spill valve is located near the bottom of the baffle. This ensures that when the fuel tank is empty almost all of the fuel from the swirl pot can be sucked by the fuel pump.
  • the filling of the surge pot reliably ensured when the spill valve is designed as a pressure relief valve, which is high in relation to the pressure in the bottom region of the surge pot Pressure in the mixing tube opens. As a result, excess fuel conveyed by the suction jet pump flows via the overflow valve into the surge pot.
  • the optional leadership promoted by the ejector and via the bottom valve inflowing fuel to the fuel pump requires according to another advantageous embodiment of the invention has a particularly low design Effort when a mixing chamber is arranged in the bottom region of the surge pot when the mixing chamber has a nozzle of the suction jet pump and a connection for the mixing tube of the suction jet pump and when the bottom valve opens into the mixing chamber.
  • the overflow valve could for example also be arranged on the mixing chamber.
  • An intake of fuel from the surge pot by the suction jet pump can be according to another advantageous embodiment of the invention simply prevent when the overflow valve is arranged on the mixing tube.
  • the bottom valve and / or the overflow valve can briefly control large flow cross sections if the bottom valve and / or the overflow valve have a plate-shaped component covering an opening.
  • Another advantage of this design is that the bottom valve or the overflow require thereby a particularly small space.
  • the leadership of the plate-shaped member of the bottom valve and / or the spill valve according to another advantageous embodiment of the invention requires a particularly low structural complexity when the plate-shaped member is connected to a guide shaft.
  • fine-meshed filter elements allow passage of fuel, but block or restrict passage of air and are well known in fuel delivery systems. In general, such fine mesh filter elements also a coating of Teflon on. Furthermore, when the fuel tank is empty, intake of air due to the design of the suction jet pump with low power is avoided. A correspondingly low-power suction jet pump can not suck in air.
  • the filter element also allows an exclusive flow of fuel and prevents in case of leakage of the overflow valve or with an empty swirl pot penetration of air into the mixing tube.
  • suction jet pump is arranged next to the fuel pump.
  • FIG. 1 shows a fuel tank 1 in a sectional view with a swirl pot 2 arranged therein.
  • a fuel pump 3 is arranged, which fuel via a flow line 4 to an internal combustion engine 5 promotes a motor vehicle.
  • a suction jet pump 6 is arranged, which is supplied via a connected to the flow line 4 branch 7 with fuel as a propellant.
  • the suction jet pump 6 has a nozzle 9 opening into a mixing chamber 8 and is in FIG. 2 shown greatly enlarged.
  • the mixing chamber 8 has a connection 10 for a mixing tube 11 and a bottom valve 12.
  • the mixing tube 11 leads to the in FIG. 1
  • the flow-side end of the mixing tube 11 forms a suction port 13 of the fuel pump 3.
  • the bottom valve 12 has a valve body 14, which closes or releases an opening 15 in the bottom of the swirl pot 2.
  • the mixing tube 11 has an overflow valve 17, which closes or releases a passage 19 leading to the swirl pot 2 with a valve body 18.
  • the opening 15 in the bottom of the swirl pot 2 forms a suction connection 16.
  • the valve body 18 of the overflow valve 17 is connected to a float 20.
  • the bottom valve 12 and the overflow valve 17 are each covered by a fine-meshed filter element 21, 22.
  • the valve bodies 14, 18 of the overflow valve 17 and the bottom valve 12 each have a plate-shaped component 23, 24 and a guide shaft 25, 26 connected to the plate-shaped component 23, 24, through which the movement of the plate-shaped component 23, 24 is guided.
  • the valve body 14, 18 are each made entirely of rubber-elastic material, close in the rest position, the respective opening 15, 19 and are moved away at a corresponding differential pressure from the opening 15, 19.
  • the overflow valve 17 is also moved by the float 20 at a corresponding level in the swirl pot 2 in the open position.
  • Fuel pump 3 promotes fuel from the mixing tube 11 in the flow line 4, passes through the branch 7 fuel to the suction jet pump 6.
  • the suction jet pump 6 sucks fuel through the bottom valve 12 and promotes this in the mixing tube 11 to the fuel pump 3.
  • the Fuel pump 3 with empty baffle 2 and a very small amount of fuel in the fuel tank 1 suck fuel. If more fuel is conveyed by the suction jet pump 6 than consumes the fuel pump 3, excess fuel passes through the overflow valve 17 into the swirl pot 2.
  • the float 20 also moves the overflow valve 17 into the open position.
  • the fine mesh filter elements 21, 22 are coated with Teflon, for example, and are exclusively permeable to fuel and prevent the passage of air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (13)

  1. Dispositif de transfert permettant de transférer du carburant provenant d'un réservoir à carburant vers un moteur à combustion interne d'un véhicule automobile, comportant une pompe à carburant, un pot de compensation comportant une soupape de fond et une pompe à jet aspirant, où un raccordement d'aspiration de la pompe à jet aspirant est raccordé au réservoir à carburant, caractérisé par le fait qu'un raccordement d'aspiration (13) de la pompe à carburant (3) est raccordé directement à un tube mélangeur (11) de la pompe à jet aspirant (6).
  2. Dispositif de transfert selon la revendication 1, caractérisé par le fait que la soupape de fond (12) est placée dans le raccordement d'aspiration (16) de la pompe à jet aspirant (6) et est commandée en position ouverte par une dépression dans le raccord d'aspiration (16) de la pompe à jet aspirant (6) par rapport à la pression au fond du réservoir à carburant (1) et en position fermée lorsque la pression est équilibrée.
  3. Dispositif de transfert selon la revendication 1 ou 2, caractérisé par le fait qu'une soupape de trop-plein (17) débouchant dans le pot de compensation (2) est placée dans une liaison entre le tube mélangeur (11) et le pot de compensation (2).
  4. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la soupape de trop-plein (17) a un flotteur (20) placé dans le pot de compensation (2) et que le flotteur (20) la commande en position ouverte au-dessus d'un niveau de remplissage prévu dans le pot de compensation (2) et en position fermée au-dessous du niveau de remplissage prévu.
  5. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que le flotteur (20) de la soupape de trop-plein (17) est placé près du fond du pot de compensation (2).
  6. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la soupape de trop-plein (17) est conçue comme soupape de surpression qui ouvre lorsque la pression dans le tube mélangeur (11) est supérieure à la pression dans la zone du fond du pot de compensation (2).
  7. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait qu'un compartiment mélangeur (8) est placé dans la zone du fond du pot de compensation (2), que le compartiment mélangeur (8) comporte un gicleur (9) de la pompe à jet aspirant (6) et un raccordement (10) pour le tube mélangeur (11) de la pompe à jet aspirant (6) et que la soupape de fond (12) débouche dans le compartiment mélangeur (8).
  8. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la soupape de trop-plein (17) est placée sur le tube mélangeur (11).
  9. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la soupape de fond (12) et/ou la soupape de surpression (17) comportent un composant (23, 24) en forme de plateau qui recouvre une ouverture (15, 19).
  10. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que le composant (23, 24) en forme de plateau est lié à une tige de guidage (25, 26).
  11. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la soupape de fond (12) est recouverte par un élément de filtrage (21) à trame fine.
  12. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la soupape de surpression (17) est recouverte par un élément de filtrage (22) à trame fine.
  13. Dispositif de transfert selon au moins l'une des revendications précédentes, caractérisé par le fait que la pompe à jet aspirant (6) est placée près de la pompe à carburant (3).
EP05794479A 2004-11-17 2005-10-10 Dispositif de transport destine au transport de carburant a partir d'un reservoir de carburant Expired - Fee Related EP1831536B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410055442 DE102004055442A1 (de) 2004-11-17 2004-11-17 Fördereinrichtung zur Förderung von Kraftstoff aus einem Kraftstoffbehälter
PCT/EP2005/055117 WO2006053803A1 (fr) 2004-11-17 2005-10-10 Dispositif de transport destine au transport de carburant a partir d'un reservoir de carburant

Publications (2)

Publication Number Publication Date
EP1831536A1 EP1831536A1 (fr) 2007-09-12
EP1831536B1 true EP1831536B1 (fr) 2008-06-11

Family

ID=35457527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05794479A Expired - Fee Related EP1831536B1 (fr) 2004-11-17 2005-10-10 Dispositif de transport destine au transport de carburant a partir d'un reservoir de carburant

Country Status (5)

Country Link
US (1) US7658181B2 (fr)
EP (1) EP1831536B1 (fr)
DE (2) DE102004055442A1 (fr)
ES (1) ES2308557T3 (fr)
WO (1) WO2006053803A1 (fr)

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DE102006035027A1 (de) * 2006-07-28 2008-01-31 GM Global Technology Operations, Inc., Detroit Flüssigkeitsbehälter
DE102006035033A1 (de) 2006-07-28 2008-01-31 GM Global Technology Operations, Inc., Detroit Venturidüse
KR100985415B1 (ko) * 2010-01-15 2010-10-06 주식회사 코아비스 연료펌프모듈
KR101075796B1 (ko) * 2011-06-14 2011-10-24 주식회사 코아비스 디젤연료 공급용 연료펌프모듈
US8726886B2 (en) 2011-08-24 2014-05-20 Robert Bosch Gmbh Fuel supply system and anti-siphon jet pump
NL2009328C2 (en) * 2012-08-16 2014-02-18 Vialle Alternative Fuel Systems Bv Assembly for buffering a liquefied petroleum gas in a liquefied petroleum gas storage and storage bag therefore.
JP2014202088A (ja) * 2013-04-02 2014-10-27 ヤマハ発動機株式会社 燃料供給装置及び鞍乗型車両
DE112019005806B4 (de) * 2018-11-20 2024-01-25 Walbro Llc Kraftstoffpumpenanordnung mit elektrischer Motorkraftstoffpumpe und fluidgetriebener Kraftstoffpumpe
US10865728B2 (en) * 2019-01-18 2020-12-15 Pratt & Whitney Canada Corp. Method of using backflow from common-rail fuel injector

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Also Published As

Publication number Publication date
DE102004055442A1 (de) 2006-05-24
US20090064973A1 (en) 2009-03-12
ES2308557T3 (es) 2008-12-01
DE502005004428D1 (de) 2008-07-24
US7658181B2 (en) 2010-02-09
WO2006053803A1 (fr) 2006-05-26
EP1831536A1 (fr) 2007-09-12

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