EP1642020B1 - Dispositif pour acheminer du carburant contenu dans un reservoir a un moteur a combustion interne - Google Patents

Dispositif pour acheminer du carburant contenu dans un reservoir a un moteur a combustion interne Download PDF

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Publication number
EP1642020B1
EP1642020B1 EP04731128A EP04731128A EP1642020B1 EP 1642020 B1 EP1642020 B1 EP 1642020B1 EP 04731128 A EP04731128 A EP 04731128A EP 04731128 A EP04731128 A EP 04731128A EP 1642020 B1 EP1642020 B1 EP 1642020B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
prefilter
fuel
line
filter
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 - Lifetime
Application number
EP04731128A
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German (de)
English (en)
Other versions
EP1642020A1 (fr
Inventor
Hans-Peter Braun
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1642020A1 publication Critical patent/EP1642020A1/fr
Application granted granted Critical
Publication of EP1642020B1 publication Critical patent/EP1642020B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles

Definitions

  • the invention relates to a device according to the preamble of the main claim. It is already a device for conveying fuel from a reservoir to an internal combustion engine from the DE 102 20 169 A1 known, which has a suction jet pump with a nozzle.
  • the disadvantage is that the nozzle clogged easily as soon as the smallest impurities enter a nozzle opening of the nozzle. This leads to a failure of the device and a stoppage of the vehicle, since a fuel pump to the internal combustion engine promoting delivery pump gets no more fuel supplied from the reservoir.
  • the device according to the invention with the characterizing features of the main claim has the advantage that the production costs are reduced in a simple manner by the nozzle is integrally connected to the pre-filter.
  • the nozzle is pressed with the prefilter in a nozzle portion of the tether, clipped, welded or glued, since this is a particularly favorable mounting solution.
  • the nozzle with the prefilter by injection molding and made of plastic, since the nozzle can be produced in this way is particularly inexpensive.
  • the pre-filter has a mesh width of 0.5 millimeters, since contaminants present in the treble line can be filtered out in this way in a particularly effective manner.
  • the nozzle is designed in the form of a cover with a cylinder section and a bottom section, the bottom section having a nozzle opening.
  • the pre-filter is arranged in an annular manner on the end face of the cylinder section facing away from the nozzle opening, since the nozzle and the prefilter can be produced particularly easily by means of injection molding in this way.
  • the treble line is angled in a nozzle section with respect to the drive line upstream of the nozzle and the pre-filter and thereby forms a stop, to which the nozzle with the integrated pre-filter during assembly is inserted.
  • the nozzle has a nozzle opening with a diameter of 0.6 to 2.5 millimeters.
  • the drawing shows an inventive device for conveying fuel from a reservoir to an internal combustion engine of a motor vehicle.
  • the device according to the invention has a fuel delivery module 2 arranged in a storage container 1.
  • a fuel 3 is stored in the reservoir 1.
  • the fuel delivery module 2 consists of an example cup-shaped storage container 4, in which a feed pump 7 is arranged, the fuel sucks, for example via a pre-filter 8 and a suction line 9 from the storage tank 4 and pressure increases via a pressure line 10 to an internal combustion engine 11 promotes.
  • the storage container 4 stores enough fuel to ensure that the fuel supply to the engine 11 is ensured by the feed pump 7, even if, for example, by cornering and consequent sloshing of the fuel in the reservoir 1, no fuel in the storage container 4 is promoted.
  • the storage container 4 is arranged with its bottom of the pot 5 near a tank bottom 6 of the reservoir 1.
  • the feed pump 7 is for example a flow pump, which is electrically driven by an actuator, for example an armature of an electric motor.
  • the prefilter 8 protects the device downstream of the prefilter 8 from coarse dirt particles contained in the fuel.
  • a check valve 14 and downstream of the check valve 14 a main filter 15 is arranged, which filters out the fine dirt particles contained in the fuel.
  • the check valve 14 prevents fuel with the delivery pump 7 is switched off from the pressure line 10 from the downstream of the check valve 14 via the pressure line upstream of the check valve 14, the feed pump 7, the suction line 9 and the pre-filter 8 back into the storage container 4. In this way, the pressure built up by the feed pump 7 in the pressure line 10 is maintained over a certain time even when the feed pump 7 is switched off.
  • a branch line 16 is provided on the pressure line 10, which opens into the storage container 4.
  • the branch line 16 has a pressure regulating valve 17.
  • the pressure regulating valve 17 opens and allows fuel to flow from the pressure line 10 via the branch line 16 into the storage container 4. In this way, the pressure in the pressure line 10 drops again below the predetermined pressure, so that the pressure control valve 17 closes and can no longer flow fuel through the branch line 16 into the storage tank 4.
  • the pressure in the pressure line 10 downstream of the check valve 14 is regulated to a constant value.
  • At least one suction jet pump 20 is provided in the storage container 4, which conveys fuel from the storage container 1 into the storage container 4.
  • a suction jet pump is for example from the DE 198 56 298 C1 known.
  • the Treb Arthur.21 may have a throttle for limiting the flow line 34 flowing through the flow.
  • the nozzle 22 is integrally connected to a second pre-filter 23 and has a nozzle opening 24 which opens into a suction chamber 27 and has, for example, a diameter of 0.6 to 2.5 millimeters.
  • the nozzle 22 with the pre-filter 23 is made for example by injection molding.
  • the nozzle 22 can also be joined together in one piece by means of gluing or welding to the prefilter 23.
  • the one-piece design of the nozzle 22 and the second pre-filter 23, the manufacturing cost of the two parts are lowered and simplifies the assembly.
  • the second pre-filter 23 dirt particles from the fuel of the haulage line 21 are filtered out, so that the nozzle 22 is not blocked.
  • a clogged nozzle 22 would cause no more fuel would be promoted by the ejector 20 in the storage tank 4, so that the level would fall in the storage tank 4 after some time and the pump 7 would not be supplied with enough fuel. Especially at low level in the reservoir 1, this would cause the vehicle to remain lying down.
  • the nozzle 22 is formed lid-shaped with a cylindrical portion 22.1 and a bottom portion 22.2.
  • a recess 22.3 forming a storage space is arranged, which is bounded by the cylinder portion 22.1 and the bottom portion 22.2.
  • the nozzle opening 24 is provided in the bottom portion 22.2 of the nozzle 22, for example, arranged centrally to the treble line 21 and connects the storage space 22.3 of the nozzle 22 with the suction chamber 27th
  • the second pre-filter 23 is annular on the cylinder portion 22.1 on the bottom portion 22.2 disposed opposite side of the nozzle 22 and like the nozzle 22 made of plastic.
  • the second pre-filter 23 has, for example, a mesh size of 0.5 millimeters, but can expressly have other mesh sizes.
  • the second prefilter 23 is designed to be open, for example, on its end face facing away from the cylinder section 22.1 in order to be able to demould the nozzle 22 together with the prefilter 23 after an injection process.
  • the second pre-filter 23 has radially inside a passage 23.1, which is connected to the storage space 22.1.
  • the nozzle 22 is arranged together with the second pre-filter 23 at one of the reservoir 1 facing the end of the brake line 21 in an example cylindrical nozzle portion 25 of the tether 21, wherein the nozzle 22 is provided downstream of the second pre-filter 23.
  • the nozzle section 25 of the haulage line 21 opens into the suction chamber 27 with an outlet opening 26.
  • the nozzle 22 with the prefilter 23 is clipped, glued, pressed or welded, for example, into the nozzle section 25, the nozzle 22 sealingly abutting the circumference of the nozzle section 25.
  • the remote from the cylinder portion 22.1 open end side of the second pre-filter 23 is sealed, for example, from one of the output port 26 opposite channel wall 28 of the nozzle portion 25. In this way, it is ensured that the entire fuel of the brake line 21 upstream of the second pre-filter 23 flows through the second pre-filter 23 and thus filtered and can not bypass the second pre-filter 23 in the short circuit or leakage.
  • the open end face of the second prefilter 23 facing away from the cylinder section 22.1 can also be closed in another way, for example by a filter wall attached to the second prefilter 23 by gluing or welding.
  • the nozzle 22 with the second prefilter 23 engages with the prefilter 23 in the nozzle portion 25 of the treble line 21 to the channel wall 28, so that the second pre-filter 23 abuts the channel wall 28 facing end face on the channel wall 28.
  • the nozzle section 25 of the treble line 21 is designed, for example, angled with respect to the treble line 21 upstream of the nozzle section 25, in order to form the channel wall 28 in a simple manner.
  • the angled and the suction chamber 27 facing part of the brake line 21 forms the nozzle portion 25.
  • the channel wall 28 has, for example, a cylindrical centering shoulder 30 which engages on the remote from the cylinder portion 22.1 open end of the second prefilter 23 in the second pre-filter 23 and the nozzle 22nd centered with the second prefilter 23 in the nozzle section 25.
  • the suction chamber 27 is formed by a recess 31 in the bottom of the pot 5 and is connected via a suction port 29 to the reservoir 1.
  • the suction chamber 27 is bounded by the bottom of the pot 5, the nozzle 22, the suction port 29 and a mixing channel 33 provided downstream of the suction chamber 27.
  • the mixing channel 33 extends from an inlet opening 33.1 of the mixing channel 33 connected to the suction chamber 27, for example in the horizontal direction.
  • a suction jet pump with horizontally extending mixing channel is also referred to as horizontally arranged suction jet pump.
  • the mixing channel 33 opens at one of the inlet opening 33.1 facing away from the end of the mixing channel 33 via another, closing in the direction of reservoir 1 check valve, such as a shield valve 34, in the storage container 4.
  • the mixing channel 33 has at the input port 33.1 For example, the end facing away from a diffuser section 35, in which the mixing channel 33 in the flow direction, for example, transversely to the plane, expanded.
  • the umbrella valve 34 is provided, for example, in the bottom of the pot 5 at the end of the mixing channel 33 facing away from the inlet opening 33.1.
  • the shield valve 34 consists of at least one valve opening 36 and a valve opening 36 covering elastic shield 37, which is made for example of rubber.
  • the elastic shield 37 bends elastically in the direction away from the bottom of the pot 5 and thereby opens the valve opening 36.
  • the elastic shield 37 bends again back to its original position and closes the valve opening 36th
  • fuel is injected via the pressure line 10, the haulage line 21, the second pre-filter 23, the passage 23.1, the storage space 22.3 and the nozzle opening 24 of the nozzle 22 as a propulsion jet into the suction chamber 27.
  • the propulsion jet entrains fuel in the flow direction upon entry into the suction chamber 27, so that a negative pressure is created in the suction chamber 27, which allows additional fuel to flow from the reservoir 1 into the suction chamber 27.
  • the fuel of the propulsion jet and the fuel entrained by the propulsion jet passes via an inlet opening 33.1 of the mixing channel 33 into the mixing channel 33 and via the opened valve opening 36 of the umbrella valve 34 into the storage container 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Filtration Of Liquid (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetic Heads (AREA)
  • Jet Pumps And Other Pumps (AREA)

Claims (8)

  1. Dispositif pour transporter du carburant d'un réservoir à un moteur à combustion interne d'un véhicule automobile, comprenant une conduite d'entraînement d'une pompe à jet aspirant présentant un préfiltre et une buse, la buse (22) étant connectée d'une seule pièce au préfiltre (23), la buse (22) étant réalisée en forme de couvercle avec une portion de cylindre (22.1) et une portion de fond (22.2), la portion de fond (22.2) présentant une ouverture de buse (24), caractérisé en ce que le préfiltre (23) est disposé sous forme annulaire au niveau du côté frontal de la portion de cylindre (22.1) opposé à l'ouverture de buse (24).
  2. Dispositif selon la revendication 1, caractérisé en ce que la buse (22) est pressée, enclipsée, soudée ou collée avec le préfiltre (23) dans une portion de buse (25) de la conduite d'entraînement (21).
  3. Dispositif selon la revendication 1, caractérisé en ce que la buse (22) est fabriquée avec le préfiltre (23) par moulage par injection.
  4. Dispositif selon la revendication 1, caractérisé en ce que la buse (22) est fabriquée avec le préfiltre (23) en plastique.
  5. Dispositif selon la revendication 1, caractérisé en ce que le préfiltre (23) présente une largeur de maille de 0,5 mm.
  6. Dispositif selon la revendication 1, caractérisé en ce que le côté frontal du préfiltre (23) opposé à la portion de cylindre (22.1) s'applique hermétiquement contre une paroi de canal (28) de la conduite d'entraînement (21).
  7. Dispositif selon la revendication 1, caractérisé en ce que la conduite d'entraînement (21) est coudée dans une portion de buse (25) par rapport à la conduite d'entraînement en amont de la buse (22) et du préfiltre (23).
  8. Dispositif selon la revendication 1, caractérisé en ce que l'ouverture de buse (24) présente un diamètre de 0,6 à 2,5 mm.
EP04731128A 2003-06-30 2004-05-05 Dispositif pour acheminer du carburant contenu dans un reservoir a un moteur a combustion interne Expired - Lifetime EP1642020B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329265A DE10329265A1 (de) 2003-06-30 2003-06-30 Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine
PCT/DE2004/000947 WO2005001278A1 (fr) 2003-06-30 2004-05-05 Dispositif pour acheminer du carburant contenu dans un reservoir a un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1642020A1 EP1642020A1 (fr) 2006-04-05
EP1642020B1 true EP1642020B1 (fr) 2009-10-28

Family

ID=33521173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04731128A Expired - Lifetime EP1642020B1 (fr) 2003-06-30 2004-05-05 Dispositif pour acheminer du carburant contenu dans un reservoir a un moteur a combustion interne

Country Status (4)

Country Link
EP (1) EP1642020B1 (fr)
AT (1) ATE447102T1 (fr)
DE (2) DE10329265A1 (fr)
WO (1) WO2005001278A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075230A1 (de) * 2011-05-04 2012-11-08 Robert Bosch Gmbh Strahlpumpe zum Fördern von Kraftstoff
DE102012210995A1 (de) 2012-06-27 2014-01-02 Robert Bosch Gmbh Saugstrahlpumpe mit integriertem Filtermodul

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0681933B2 (ja) 1986-03-13 1994-10-19 日本電装株式会社 燃料供給ポンプ装置
US4860714A (en) * 1986-08-20 1989-08-29 Whitehead Engineered Products, Inc. In-tank fuel pump assembly for fuel-injected engines
FR2727159A1 (fr) * 1994-11-22 1996-05-24 Marwal Systems Systeme d'alimentation en carburant pour moteur a combustion interne, notamment de type diesel
DE19856298C1 (de) * 1998-12-07 2000-02-17 Bosch Gmbh Robert Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeuges
DE10119553B4 (de) * 2001-04-21 2005-06-23 Siemens Ag Saugstrahlpumpe und Verfahren zur Herstellung einer Düse für eine Saugstrahlpumpe
GB2375086B (en) 2001-05-05 2004-10-20 Visteon Global Tech Inc In-tank fuel supply unit
DE10138838B4 (de) * 2001-08-14 2006-01-26 Siemens Ag In einem Schwalltopf eines Kraftstoffbehälters eines Kraftfahrzeuges anzuordnende Fördereinheit
DE10260473A1 (de) * 2002-12-21 2004-07-15 Adam Opel Ag Kraftstoffzufuhrsystem für die Zufuhr von Kraftstoff sowie Saugstrahlpumpe hierfür
DE10303390A1 (de) 2003-01-29 2004-08-05 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeugs

Also Published As

Publication number Publication date
WO2005001278A1 (fr) 2005-01-06
DE502004010301D1 (de) 2009-12-10
DE10329265A1 (de) 2005-01-20
ATE447102T1 (de) 2009-11-15
EP1642020A1 (fr) 2006-04-05

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