EP1875063B1 - Dispositif pour acheminer du carburant d'un reservoir de carburant au moteur a combustion d'un vehicule automobile - Google Patents

Dispositif pour acheminer du carburant d'un reservoir de carburant au moteur a combustion d'un vehicule automobile Download PDF

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Publication number
EP1875063B1
EP1875063B1 EP06708436A EP06708436A EP1875063B1 EP 1875063 B1 EP1875063 B1 EP 1875063B1 EP 06708436 A EP06708436 A EP 06708436A EP 06708436 A EP06708436 A EP 06708436A EP 1875063 B1 EP1875063 B1 EP 1875063B1
Authority
EP
European Patent Office
Prior art keywords
fuel
chambers
storage reservoir
storage container
walls
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
EP06708436A
Other languages
German (de)
English (en)
Other versions
EP1875063A1 (fr
Inventor
Hans-Peter Braun
Thomas Wieland
Matthias Kirner
Claudio Nakao
Martin Beyer
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 EP1875063A1 publication Critical patent/EP1875063A1/fr
Application granted granted Critical
Publication of EP1875063B1 publication Critical patent/EP1875063B1/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
    • F02M37/04—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
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
    • 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
    • F02M37/22—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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • F02M37/0058—Returnless fuel systems, i.e. the fuel return lines are not entering the fuel tank

Definitions

  • the invention relates to a device according to the preamble of the main claim according to the document EP 1 186 772 ,
  • a device for pumping fuel out of the US 5,080,077 known with an arranged in a storage tank suction jet pump, which promotes fuel via a suction port in a bottom of the storage container from a reservoir into the storage container.
  • the intake opening is preceded by a filter fabric which filters out the dirt contained in the fuel of the reservoir, so that they can not affect the functioning of downstream of the intake valves.
  • the disadvantage is that the filter fabric increasingly clogged with heavily contaminated fuel and thereby generates an increasing pressure loss, so that with the same power of the ejector increasingly less fuel is conveyed into the storage tank.
  • the device according to the invention with the characterizing features of the main claim has the advantage that in a simple manner an alternative separation of the dirt particles from the fuel of the reservoir is provided by on and / or in the bottom of the storage container on one of the feed pump facing inside more , to the storage container open towards chambers for the separation of dirt particles contained in the fuel are provided, wherein the feed pump is arranged such that the fuel exiting from the feed pump flows over the chambers.
  • the chambers are arranged one behind the other in the flow direction of the fuel emerging from the feed pump, since in this way the particles are deposited particularly well in the chambers.
  • chambers are arranged side by side in the flow direction of the fuel exiting from the feed pump, since in this way the separation effect is even further improved.
  • the chambers are formed by protruding from the bottom of the storage container walls, as this embodiment is particularly easy and inexpensive to produce by injection molding.
  • the chambers are formed by at least two guide walls, which are interconnected by a plurality of transverse to the flow direction separating walls, since this embodiment can be particularly simple and inexpensive to produce by injection molding.
  • the storage container forms one of the guide walls, since in this way it is ensured that almost the entire fuel sucked from the storage container flows over the chambers and is cleaned of dirt particles.
  • the delivery unit is a suction jet pump.
  • the delivery unit is arranged such that the emerging from an outlet of the delivery unit in the storage tank fuel jet obliquely on a peripheral wall of the storage container, since the fuel jet is not divided in this way, but conforms to the peripheral wall and at this flows along. As a result, almost the entire amount of fuel sucked in flows over the chambers, so that sufficient cleaning of the sucked-in fuel is ensured.
  • FIG.1 a schematic view of the device according to the invention and Fig.2 a storage container with a feed pump.
  • the device is used for example for conveying fuel from a storage container 1 in a storage container 2 and from there via a delivery unit 3 to an internal combustion engine 4 of a motor vehicle.
  • the delivery unit 3 is arranged in the storage container 1, the storage container 2 and in the storage container 2, the delivery unit 3 is arranged.
  • the delivery unit 3 is for example a flow pump or a displacement pump.
  • the example cup-shaped storage container 2 stores enough fuel to ensure a fuel supply to the engine 4 is ensured by the delivery unit 3, even if, for example, by cornering and consequent sloshing of the fuel in the reservoir 1, no fuel in the storage tank 2 is promoted.
  • the delivery unit 3 sucks, for example via a pre-filter 5 and a suction line 6 fuel from the storage tank 2 and delivers the fuel via an outlet port 7 in a pressure line 8, which leads to the internal combustion engine 4.
  • the pre-filter 5 protects the device downstream of the prefilter 5 from coarse dirt particles contained in the fuel.
  • a check valve 9 and downstream of the check valve 9 a main filter 10 is provided in the pressure line 8.
  • the check valve 9 prevents fuel with switched-off delivery unit 3 from the pressure line 8 downstream of the check valve 9 after upstream of the check valve 9, by the delivery unit 3, the suction line 6 and the pre-filter 5 runs back into the storage container 2.
  • the main filter 10 filters the contained in the fuel fine dirt particles and protects in this way, for example, the injectors of the engine from clogging.
  • the pressure regulating valve 14 opens and allows fuel from the pressure line 8 to flow back into the storage container 2 via the overpressure line 13. In this way, the pressure in the pressure line 8 drops again below the predetermined pressure and the pressure control valve 14 closes again.
  • a treble line 15 Downstream of the delivery unit 3 and upstream of the check valve 9 branches off from the pressure line 8 a treble line 15 from, for example, serves to feed and drive a feed pump, for example, a so-called suction jet pump 16 with fuel from the pressure line 8.
  • the suction jet pump 16 may be expressly fed by fuel from the pressure relief line 13 or from a not shown, returned by the internal combustion engine 4 in the reservoir 1 return line. So that the storage container 2 is not sucked empty by the delivery unit 3, the suction jet pump 16 promotes fuel from the reservoir 1 via a suction port 17 into the storage container 2. The sucked fuel is conveyed together with the so-called propulsion jet of the treble line 15 in the storage container 2.
  • a throttle element 21 is provided in order to set and limit the volume flow flowing over the haulage line 15. So that the throttle element 21 can not clog, another pre-filter 22 is provided in the third brake line 15 upstream of the throttle element 21.
  • a suction jet pump is for example from the DE 198 56 298 C1 the content of which is expressly intended to be part of the disclosure of this application.
  • the storage container 2 is, for example, cup-shaped with an axis 20 (FIG. Fig.2 ) and has a bottom 23.
  • the suction jet pump 16 is arranged for example on the bottom 23.
  • the fuel sucked in via the intake opening 17 is cleaned by filters of dirt particles. These filters increasingly clog so that the pressure loss of the filters increases and with the same power of the ejector increasingly less fuel is sucked into the storage container 2.
  • this filter can be dispensed with by providing an alternative deposition of the dirt particles. In this way, the pressure loss in the region of the intake opening 17 remains constant, so that at the same power of the ejector 16 always the same amount of fuel is conveyed into the storage container 2.
  • a plurality of chambers 24 for separating dirt particles contained in the fuel of the storage container 1 are provided on and / or in the bottom 23 of the storage container 2 on an inner side 19 facing the suction jet pump 16.
  • the chambers 24 are formed on their bottom 23 remote from the top to the storage container 2 out.
  • the shape of the chambers 24 is arbitrary.
  • the suction jet pump 16 is arranged according to the invention such that the fuel exiting the suction jet pump 16 into the storage tank 2 flows over the chambers 24.
  • the chambers 24 are arranged one behind the other in a flow direction 26 of the fuel emerging from the ejector 16 into the storage container 2. It can also be provided, in addition to arrange further chambers 24 in this flow direction 26 side by side.
  • the chambers 24 are arranged, for example, part-ring shape behind one another, but can also be connected in a straight line or connected in any other form in series.
  • the chambers 24 are formed for example by projecting from the bottom 23 of the storage container 2 walls 25. In another embodiment, however, the chambers 24 may also be formed by depressions in the bottom 23.
  • the guided from the suction jet pump 16 into the storage container 2 via the chambers 24 away fuel is slowed down by the chambers 24.
  • the chambers 24 each represent a dead water area for the flow in which vortex form.
  • dirt particles are deposited, for example by the slowing of the flow and the vortex formation in the chambers 24 due to their inertia and settle at the bottom of the individual chambers 24.
  • the volume of the chambers 24 is designed such that there is a sufficiently large capacity for receiving dirt particles and the Do not completely fill chambers 24 within the average life of a vehicle.
  • the capacity of the chambers 24 is significantly greater than the filtering solutions of the prior art.
  • Fig. 2 shows a section of the device according to Fig.1 , in which, however, only the storage container, the suction jet pump and the chambers are shown.
  • the chambers 24 are formed by, for example, two spaced apart guide walls 28, between which a plurality of transverse to the flow direction 26 extending and spaced apart partition walls 30 are arranged, which connect the guide walls 28, for example.
  • the guide walls 28 are for example arcuate and extend at least approximately in the same direction.
  • the guide walls can expressly have any shape.
  • the dividing walls 30 extend in the axial direction with respect to the axis 20 of the storage cup 2, for example, to the bottom 23 of the storage container 2, so that separate chambers 24 are formed.
  • the chambers 24 are arranged radially outward with respect to the axis 20 so that they adjoin a peripheral wall 29 of the storage container 2. In this way, the chambers 24 are bounded radially outward by the storage container 2, which forms one of the guide walls 28 with the peripheral wall 29.
  • the other guide wall 28 is disposed radially inwardly of the peripheral wall 29 and spaced therefrom.
  • the height of the guide walls 28 measured in the axial direction with respect to the axis 20 of the storage container 2 is, for example, greater than the height of the dividing walls 30 measured in the same direction, but may also be the same.
  • the part of the guide walls 28 above the dividing walls 30 serves to guide the flow of the fuel emerging from the suction jet pump 16 via the chambers 24.
  • the height of the dividing walls 30 arranged one behind the other increases in the flow direction 26 from one dividing wall 30 to the next.
  • the height of the radially inner guide wall 28 in the flow direction 26 increases continuously, for example.
  • the height of the dividing walls 30 and at least one guide wall 28 can also be constant or even decrease in the flow direction 26.
  • the suction jet pump 16 has an inlet 33 for the fuel of the treble line 15 and an outlet 34, also referred to as a mixing channel, in the storage container 2. Through the intake opening 17 in the bottom 23, fuel is sucked from the reservoir 1 into the suction jet pump 16, which passes together with the fuel of the treble line 15 through the outlet 34 into the storage container 2 and then flows away between the guide walls 28 via the chambers 24.
  • the suction jet pump 16 is arranged, for example, such that the fuel jet emerging from the outlet 34 is directed towards the chambers 24, wherein the outlet 34 of the suction jet pump 16 is provided as close as possible to the chambers 24. In this way it is ensured that almost the entire amount of fuel sucked from the reservoir 1 flows through the chambers 24 and is cleaned of dirt particles.
  • the suction jet pump 16 is arranged, for example, such that the fuel jet exiting from the outlet 34 is aligned obliquely to the peripheral wall 29, so that it conforms to the peripheral wall 29 of the storage container 2, flows along this along between the guide walls 28 and the dividing walls 30 with the chambers 24 flows over.

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  • 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)

Claims (10)

  1. Dispositif pour amener du carburant d'un réservoir de carburant à un moteur à combustion interne d'un véhicule automobile, comprenant une pompe d'alimentation disposée dans un récipient de stockage, qui refoule du carburant hors du réservoir de carburant dans le récipient de stockage, le récipient de stockage présentant un fond, plusieurs chambres (24) ouvertes vers le récipient de stockage (2) étant prévues sur et/ou dans le fond (23) du récipient de stockage (2) sur un côté intérieur (19) tourné vers la pompe d'alimentation (16), pour séparer les particules de saleté contenues dans le carburant, la pompe d'alimentation (16) étant disposée de telle sorte que le carburant sortant de la pompe d'alimentation (16) s'écoule au-dessus des chambres (24).
  2. Dispositif selon la revendication 1, caractérisé en ce que les chambres (24) sont disposées les unes derrière les autres dans la direction d'écoulement (26) du carburant sortant de la pompe d'alimentation (16).
  3. Dispositif selon la revendication 2, caractérisé en ce que des chambres (24) supplémentaires sont disposées les unes à côté des autres dans la direction d'écoulement (26).
  4. Dispositif selon la revendication 1, caractérisé en ce que les chambres (24) sont formées par des parois (25) saillant depuis le fond (23) du récipient de stockage (2).
  5. Dispositif selon la revendication 1, caractérisé en ce que les chambres (24) sont réalisées sous forme de renfoncements dans le fond (23) du récipient de stockage (2).
  6. Dispositif selon la revendication 1, caractérisé en ce que les chambres (24) sont formées par au moins deux parois de guidage (28) qui sont connectées l'une à l'autre par plusieurs parois de séparation (30) s'étendant transversalement à la direction d'écoulement (26).
  7. Dispositif selon la revendication 6, caractérisé en ce que le récipient de stockage (2) forme l'une des parois de guidage (28).
  8. Dispositif selon la revendication 6, caractérisé en ce que la hauteur des parois de guidage (28) et/ou des parois de séparation (30), mesurée dans la direction axiale du récipient de stockage (2), augmente dans la direction d'écoulement (26).
  9. Dispositif selon la revendication 1, caractérisé en ce que l'unité d'alimentation (16) est une pompe à jet aspirant.
  10. Dispositif selon la revendication 1, caractérisé en ce que l'unité d'alimentation (16) est disposée de telle sorte que le jet de carburant sortant par une sortie (34) de l'unité d'alimentation (16) dans le récipient de stockage (2) parvienne obliquement sur une paroi périphérique (29) du récipient de stockage (2).
EP06708436A 2005-04-21 2006-02-22 Dispositif pour acheminer du carburant d'un reservoir de carburant au moteur a combustion d'un vehicule automobile Expired - Fee Related EP1875063B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005018469A DE102005018469A1 (de) 2005-04-21 2005-04-21 Vorrichtung zum Fördern von Kraftstoff aus einem Kraftstofftank zur Brennkraftmaschine eines Kraftfahrzeuges
PCT/EP2006/060161 WO2006111435A1 (fr) 2005-04-21 2006-02-22 Dispositif pour acheminer du carburant d'un reservoir de carburant au moteur a combustion d'un vehicule automobile

Publications (2)

Publication Number Publication Date
EP1875063A1 EP1875063A1 (fr) 2008-01-09
EP1875063B1 true EP1875063B1 (fr) 2009-01-28

Family

ID=36294150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06708436A Expired - Fee Related EP1875063B1 (fr) 2005-04-21 2006-02-22 Dispositif pour acheminer du carburant d'un reservoir de carburant au moteur a combustion d'un vehicule automobile

Country Status (6)

Country Link
EP (1) EP1875063B1 (fr)
CN (1) CN101163877B (fr)
BR (1) BRPI0606448A2 (fr)
DE (2) DE102005018469A1 (fr)
RU (1) RU2397358C2 (fr)
WO (1) WO2006111435A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008007204B4 (de) * 2008-02-01 2018-04-19 Robert Bosch Gmbh Saugstrahlpumpe
JP5571366B2 (ja) 2009-12-04 2014-08-13 愛三工業株式会社 フィルタ装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225929C2 (de) * 1982-07-10 1994-01-20 Bosch Gmbh Robert Kraftstoffbehälter für Brennkraftmaschinen, insbesondere von Kraftfahrzeugen
JP4374789B2 (ja) * 2000-09-06 2009-12-02 三菱電機株式会社 燃料供給装置
DE10125142A1 (de) * 2001-05-22 2002-12-05 Siemens Ag Förderpumpe
TW558605B (en) * 2002-02-08 2003-10-21 Mitsubishi Electric Corp Fuel filter and fuel supply device
DE10237050B3 (de) * 2002-08-09 2004-04-15 Siemens Ag Saugstrahlpumpe
DE102004041768B4 (de) * 2003-09-08 2013-04-11 Robert Bosch Gmbh Fliehkraftabscheider
DE102004021919A1 (de) * 2004-05-04 2005-12-01 Robert Bosch Gmbh Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine

Also Published As

Publication number Publication date
EP1875063A1 (fr) 2008-01-09
BRPI0606448A2 (pt) 2009-06-30
RU2007142646A (ru) 2009-05-27
CN101163877B (zh) 2010-04-21
CN101163877A (zh) 2008-04-16
DE502006002751D1 (de) 2009-03-19
RU2397358C2 (ru) 2010-08-20
WO2006111435A1 (fr) 2006-10-26
DE102005018469A1 (de) 2006-11-02

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