EP2257706B1 - Vorrichtung zum fördern von kraftstoff - Google Patents

Vorrichtung zum fördern von kraftstoff Download PDF

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Publication number
EP2257706B1
EP2257706B1 EP08872994.2A EP08872994A EP2257706B1 EP 2257706 B1 EP2257706 B1 EP 2257706B1 EP 08872994 A EP08872994 A EP 08872994A EP 2257706 B1 EP2257706 B1 EP 2257706B1
Authority
EP
European Patent Office
Prior art keywords
pot
jet pump
suction jet
suction
housing
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.)
Active
Application number
EP08872994.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2257706A1 (de
Inventor
Radek Malec
Petr Janis
Zdenek Belda
Juergen Gras
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 EP2257706A1 publication Critical patent/EP2257706A1/de
Application granted granted Critical
Publication of EP2257706B1 publication Critical patent/EP2257706B1/de
Active 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
    • 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators

Definitions

  • the invention relates to a device for conveying fuel according to the preamble of the main claim.
  • EP 1 103 717 A1 DE 10 2004 007319 A1 .
  • DE 195 30 423 A1 EP 0 597 175 A1 and DE 37 19 809 C1 known.
  • the device according to the invention with the characterizing features of the main claim has the advantage that the flow turbulence is reduced and the suction of the suction jet pump is increased by the decrease in gas bubble formation by provided at the bottom of the pot cup inside the suction chamber at the transition into the mixing channel an oblique ramp for low-turbulence flow guidance is.
  • the intake opening and the input into the mixing channel are arranged in different planes, which are connected to one another by means of the oblique ramp according to the invention. Due to the lower flow turbulences in the suction jet pump arise when heated fuel fewer bubbles in the fuel, so that more fuel is conveyed into the storage tank.
  • the suction chamber and the mixing channel are designed on a housing of the suction jet pump, wherein the suction chamber is open to the bottom of the pot.
  • a closed chamber is achieved in this way, which is flow-connected via the suction port to a fuel tank and via the mixing channel with the storage pot.
  • the housing of the suction jet pump has a stepped transition from the suction chamber into the mixing channel, to which the inclined ramp adjoins.
  • the inclined ramp is carried out separately on the bottom of the pot and separately from the housing of the suction jet pump, wherein after the attachment of the housing of the suction jet pump to the bottom of the pot, an inventive suction jet pump is formed with a substantially continuous transition from the suction chamber into the mixing channel.
  • the inclined ramp is made in one piece on the bottom of the pot pot, since the inclined ramp can be produced in this way particularly cost by injection molding together with the storage pot.
  • the pot bottom of the storage cup therefore has a bevel formed on it.
  • the housing of the suction jet pump can be fixed by means of holding means on the bottom of the pot.
  • a receptacle for fixing the suction jet pump is provided on the bottom of the pot, since the housing of the suction jet pump in this way is particularly easy to attach to the bottom of the pot pot.
  • Fig.1 shows in section a device for conveying fuel with a suction jet pump according to the invention.
  • the device for conveying fuel is arranged in a fuel tank 1 and conveyed by means of a delivery unit 2 fuel from the fuel tank 1 druckerhöht via a pressure line 3 to an internal combustion engine 4.
  • the delivery unit 2 is arranged in a storage pot 5, which is sufficient for the delivery unit 2 fuel holds, so that it can suck in fuel even at low levels in the fuel tank 1 and when accelerating, braking, cornering and / or climbing.
  • the storage tank 5 has a pot bottom 6. From the pressure line 3 branches off a tether 8, which drives a suction jet pump 9 for active filling of the storage cup 5.
  • a pressure regulating valve 10 may be provided, which can only flow off fuel from the pressure line 3 into the tapping line 8 from a predetermined pressure in the pressure line 3.
  • a check valve 11 is provided in the pressure line 3, which prevents a backflow of fuel.
  • a mixing channel 16 connects, which is arranged in an imaginary extension of the beam output 14, such that a from the beam exit 14 of the treble line. 8 emerging fluid jet via the suction chamber 15 rectilinearly passes into the mixing channel 16.
  • the mixing channel 16 extends horizontally in the direction of the bottom of the pot. 6
  • the mode of operation of the suction jet pump 9 is sufficiently well known, so that it will be described only briefly here: via the tether 8 and its jet outlet 14, a blowing current is introduced into the suction chamber 15 in the form of a jet.
  • the propulsion jet of the haulage line 8 entrains surrounding fuel from the suction chamber 15 into the mixing channel 16, so that a delivery flow is established via the mixing channel 16 into the storage pot 5.
  • the suction chamber 15 creates a negative pressure, the fuel via a suction port 17 of the suction chamber 15 from the Fuel tank 1 can flow into the suction chamber 15.
  • a valve member 18 is provided, which cooperates with the suction port 17 and forms with this a check valve.
  • the suction chamber 15 and the mixing channel 16 are formed on a housing 19 of the suction jet pump 9, wherein the suction chamber 15 is open to the bottom of the pot 6.
  • the part of the housing 19 with the suction chamber 15 is arranged on the pot bottom 6 and includes the suction port 17 a. Thereby, a closed suction chamber 15 is reached, which is flow-connected via the suction port 17 to the fuel tank 1 and via the mixing channel 16 with the storage cup 5.
  • a portion of the treble line 8 is formed, which opens into the suction chamber 15 with the narrowed jet outlet 14.
  • an oblique ramp 20 for low-turbulence flow guidance is provided on the bottom of the pot 6 of the reservoir cup 5 within the suction chamber 15 at the transition into the mixing channel 16.
  • the oblique ramp 20 reduces the turbulence in the flow, so that less gas bubbles arise within the suction jet pump 9, in particular in so-called hot gasoline.
  • the oblique ramp 20 acts as a so-called deflector and deflects the flow with low turbulence
  • the suction opening 17 and a lower edge 24 facing the bottom of the pot 6 at the intake chamber-side inlet 16.1 into the mixing channel 16 are arranged in different planes, the planes being connected to one another by means of the oblique ramp 20.
  • the ramp ramp 20 rises substantially continuously from the plane with the suction port 17 to the plane with the lower edge 24.
  • the oblique ramp 20 could also be designed to increase in stages in several stages.
  • the oblique ramp 20 is essentially continuous in the bottom of the pot 6.
  • the housing 19 of the suction jet pump 9 itself has a step-shaped transition 23 from the suction chamber 15 in the mixing channel 16, wherein the oblique ramp 20 of the pot bottom 6 and the lower edge 24 at the input 16.1 of the mixing channel 16 after attachment of the housing 19 to the pot bottom. 6 essentially steplessly connect to each other. Seen in the flow direction thus includes at the highest point of the oblique ramp 20 of the mixing channel 16 with the lower edge 24, wherein at the transition between the oblique ramp 20 and the mixing channel 16, a connection gap 21 is formed.
  • the wall thickness of the pot bottom 6 in the region of the oblique ramp 20 is approximately the same as in the rest of the pot bottom. 6
  • the oblique ramp 20 is integrally formed on the pot bottom 6 of the storage cup 5.
  • the oblique ramp 20 could also be a separate part, the am Pot bottom 6 or attached to the housing 19 of the suction jet pump 9. Likewise, it may be provided to form the oblique ramp 20 in one piece on the housing 19 of the suction jet pump 9.
  • the housing 19 is fixed by means of holding means 28 on the bottom of the pot 6.
  • a receptacle 27 for the part of the housing 19 with the suction chamber 15 is provided on the bottom of the pot 6 of the storage pot 5.
  • the receptacle 27 is adapted to the shape of the suction chamber 15, so that the housing 19 can be inserted with the suction chamber 15 in the receptacle 27.
  • the suction jet pump 9 is fixed in the receptacle 27 by means of the holding means 28, for example, locked.
  • the receptacle 27 surrounds the suction opening 17th
  • a coarse filter 30 is formed, which filters the sucked by the suction jet 9 fuel upstream of the suction port 17.
  • Fig.2 shows a section of the pot bottom of the storage pot Fig.1 ,

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)
EP08872994.2A 2008-02-28 2008-12-18 Vorrichtung zum fördern von kraftstoff Active EP2257706B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008000437A DE102008000437A1 (de) 2008-02-28 2008-02-28 Vorrichtung zum Fördern von Kraftstoff
PCT/EP2008/067870 WO2009106185A1 (de) 2008-02-28 2008-12-18 Vorrichtung zum fördern von kraftstoff

Publications (2)

Publication Number Publication Date
EP2257706A1 EP2257706A1 (de) 2010-12-08
EP2257706B1 true EP2257706B1 (de) 2015-02-25

Family

ID=40430033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08872994.2A Active EP2257706B1 (de) 2008-02-28 2008-12-18 Vorrichtung zum fördern von kraftstoff

Country Status (5)

Country Link
US (1) US20110000468A1 (zh)
EP (1) EP2257706B1 (zh)
CN (1) CN101960135B (zh)
DE (1) DE102008000437A1 (zh)
WO (1) WO2009106185A1 (zh)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8726886B2 (en) * 2011-08-24 2014-05-20 Robert Bosch Gmbh Fuel supply system and anti-siphon jet pump
DE102012200588A1 (de) * 2012-01-17 2013-07-18 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff
DE102012210234A1 (de) 2012-06-18 2013-12-19 Robert Bosch Gmbh Reservoir mit Klappenventil
DE102012210995A1 (de) 2012-06-27 2014-01-02 Robert Bosch Gmbh Saugstrahlpumpe mit integriertem Filtermodul
US10787069B2 (en) 2013-03-27 2020-09-29 Scania Cv Ab Hybrid powertrain with a gearbox and method to control the hybrid powertrain
JP6331980B2 (ja) 2014-11-06 2018-05-30 株式会社デンソー 燃料供給装置
CN104791160A (zh) * 2015-04-30 2015-07-22 安徽江淮汽车股份有限公司 一种燃油箱输油管路装置
DE112019005806B4 (de) * 2018-11-20 2024-01-25 Walbro Llc Kraftstoffpumpenanordnung mit elektrischer Motorkraftstoffpumpe und fluidgetriebener Kraftstoffpumpe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719809C1 (de) * 1987-06-13 1988-06-09 Daimler Benz Ag Stautopf fuer Kraftstoffbehaelter

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860714A (en) * 1986-08-20 1989-08-29 Whitehead Engineered Products, Inc. In-tank fuel pump assembly for fuel-injected engines
DE4238040A1 (de) * 1992-11-11 1994-05-19 Vdo Schindling Saugstrahlpumpe zum Fördern von Kraftstoff
US5330475A (en) 1993-11-29 1994-07-19 General Motors Corporation Modular fuel sender for motor vehicle
US5452701A (en) * 1994-05-23 1995-09-26 Walbro Corporation Turbine fuel pump with fuel jet
DE19530423C2 (de) * 1995-08-18 1999-06-02 Mannesmann Vdo Ag Saugstrahlpumpe für den Einsatz in einem Kraftstofftank
US6058911A (en) * 1997-04-07 2000-05-09 Nissan Motor Co., Ltd. Fuel chamber for automotive vehicle
JP3114095B2 (ja) * 1997-10-21 2000-12-04 矢嶋工業株式会社 燃料タンクのリザーバカップ
JP3562558B2 (ja) * 1997-11-25 2004-09-08 株式会社ニフコ 旋回槽構造
ATE291692T1 (de) * 1999-11-23 2005-04-15 Siemens Ag In einem schwalltopf eines kraftstoffbehälters eines kraftfahrzeuges angeordnete fördereinheit
CN1217129C (zh) * 2000-01-31 2005-08-31 夏普公司 液体燃料燃烧装置
FR2818320B1 (fr) * 2000-12-14 2003-07-04 Marwal Systems Dispositif de puisage de carburant pour reservoir de vehicule automobile
DE10138838B4 (de) * 2001-08-14 2006-01-26 Siemens Ag In einem Schwalltopf eines Kraftstoffbehälters eines Kraftfahrzeuges anzuordnende Fördereinheit
US6857859B2 (en) * 2003-02-19 2005-02-22 Siemens Vdo Automotive Corporation Gasket for jet pump assembly of a fuel supply unit
DE102004007319A1 (de) * 2004-02-14 2005-08-25 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff
US8206126B2 (en) * 2006-05-01 2012-06-26 Continental Automotive Systems Us, Inc. Fuel pump with inner channel priming
EP1911962A1 (en) * 2006-09-29 2008-04-16 Inergy Automotive Systems Research (SA) Single piece dual jet pump and fuel system using it

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719809C1 (de) * 1987-06-13 1988-06-09 Daimler Benz Ag Stautopf fuer Kraftstoffbehaelter

Also Published As

Publication number Publication date
DE102008000437A1 (de) 2009-09-03
US20110000468A1 (en) 2011-01-06
CN101960135B (zh) 2013-06-19
WO2009106185A1 (de) 2009-09-03
EP2257706A1 (de) 2010-12-08
CN101960135A (zh) 2011-01-26

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