WO2012045508A1 - Dispositif de refoulement de carburant comportant un préfiltre en forme de pot - Google Patents

Dispositif de refoulement de carburant comportant un préfiltre en forme de pot Download PDF

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Publication number
WO2012045508A1
WO2012045508A1 PCT/EP2011/063833 EP2011063833W WO2012045508A1 WO 2012045508 A1 WO2012045508 A1 WO 2012045508A1 EP 2011063833 W EP2011063833 W EP 2011063833W WO 2012045508 A1 WO2012045508 A1 WO 2012045508A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
filter
prefilter
pump
permeable
Prior art date
Application number
PCT/EP2011/063833
Other languages
German (de)
English (en)
Inventor
Karsten Scholz
Michael Kuehn
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 WO2012045508A1 publication Critical patent/WO2012045508A1/fr

Links

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
    • F02M37/22—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
    • F02M37/44—Filters structurally associated with pumps
    • 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

Definitions

  • a fuel delivery device for a fuel tank has a pump, on which a pre-filter is arranged.
  • the prefilter is that during operation of the pump fuel is stored within or in the immediate vicinity of the pre-filter.
  • the idea of the present invention is based on integration of a fuel storage function into the pump pre-filter to enhance exhaust of the fuel from the fuel tank.
  • the fuel delivery device may be provided in a fuel tank and provide fuel to a combustion engine, such as an engine.
  • the pump may be embodied, for example, as an electric fuel pump (EKP), e.g. be attached to the tank flange.
  • EKP electric fuel pump
  • the further can be arranged in the fuel tank such that the lower part of the prefilter is arranged as close as possible or directly to the tank bottom.
  • the pre-filter is attached to the pump and upstream, that is, viewed in the suction direction in front of the pump arranged.
  • the pre-filter is suitable for accumulating or accumulating fuel in the region of the feed pump.
  • the pre-filter can store the fuel while the pump is in operation, that is, for example, the vehicle in which the pump is integrated, is driving. At standstill of the pump, the fuel may possibly leave the area of the pump through the permeable filter fabric.
  • the fuel conveyor thus has a dynamic mode of operation.
  • the prefilter for storing or accumulating fuel may be designed as a prefilter pot.
  • the fuel can be stored inside the pre-filter top.
  • the pre-filter may have a pot or tub shape with a round, oval or polygonal plan or cross section.
  • the wall or the walls of the prefilter pot may be inclined or arched vertically upwards, inwards or outwards.
  • the prefilter has a filter bottom and a filter wall.
  • the filter wall protrudes beyond the filter bottom in the suction direction of the pump. This means that the filter bowl is open at the top, ie in the direction of the tank flange.
  • the filter bottom is located below the pump and the pump is located in or above the prefilter pot.
  • the filter wall has a first outer area and a first inner area.
  • the filter bottom has a second outer area and a second inner area.
  • the first outer region may be a side of the filter wall facing the fuel tank or a part thereof.
  • the second outer region may be a side of the filter bottom facing the fuel tank or a part thereof.
  • the first inner region may be a side of the filter wall facing the interior of the prefilter pot or the pump or a part thereof.
  • the second inner region may be a side of the filter bottom or a part thereof facing the interior of the filter pot or the pump.
  • a cavity may be provided between the first outer region and the first inner region of the filter wall.
  • a cavity may also be provided between the second outer region and the second inner region of the filter bottom.
  • the cavity may for example be partially or completely filled with a support fabric.
  • the pump may be designed to suck from the cavity between the second outer region and the second inner region of the filter bottom.
  • at least the second outer region of the filter bottom is made permeable. Permeability can mean, for example, that the filter fabric is permeable or permeable to the fuel.
  • Both the filter wall, so the first outer and inner regions, as well as the filter bottom, so the second outer and inner regions can be made permeable to fuel.
  • they can consist entirely of filter fabrics or, alternatively, have areas with filter fabric.
  • the second inner region of the filter bottom is not permeable to fuel and the first inner region of the filter wall is permeable to fuel. That is, the inner walls of the prefilter pot are permeable to the fuel, causing the fuel in the
  • the second inner region of the filter bottom ie the inner or upper bottom of the filter cup can be impermeable to the fuel and, for example, have a plate made of metal or plastic.
  • the second inner region of the filter bottom is permeable to fuel, while the first inner region of the filter wall is not permeable to fuel.
  • the fuel can see into the cavity between the second inner and outer regions and thereby filtered. From the cavity, the filtered fuel can be conveyed by means of the pump to the engine, such as an engine.
  • the fuel delivery device has a prefilter cover.
  • the prefilter cover has a
  • the prefilter cap together with the pre-filter bottom and prefilter wall, may form a closed space in which the pump is located and in which the fuel is pumped during pumping, e.g. while driving, is collected.
  • the pre-filter cover can prevent the fuel from spilling out of the prefilter pot.
  • the fuel return of a pressure regulator can be returned to the pre-filter or prefilter pot.
  • a pressure regulator can be arranged in the interior of the filter cup.
  • a line can lead from the pressure regulator into the prefilter pot.
  • the prefilter is designed as a fine mesh filter. According to a further embodiment of the invention, the prefilter is designed as a multi-layer depth filter.
  • the prefilter material may e.g. support fuel delivery due to the capillary effect.
  • a fuel tank with a fuel delivery device described above is presented.
  • the prefilter pot can for example be combined with a storage pot.
  • the prefilter pot form a lower part of a storage pot.
  • the prefilter pot may be formed integrally with a storage pot.
  • the fuel delivery device according to the invention and the fuel tank with the prefilter allow a concentration of the fuel in the inlet region or in the intake of the fuel pump even at low fuel level and critical driving situations such as when accelerating, braking and / or cornering.
  • the design of the prefilter as prefilter pot allows an enlargement of the filter surface and thus a "sucked" surface in the tank, which is the fuel pump for delivering the fuel ready.Thus, for example, can be dispensed with a separate storage pot, resulting in a cost savings an active filling of the storage pot can be dispensed with, for example, by means of a suction jet pump, since a suitable prefilter material and the large filter surface support the fuel delivery, which also leads to a reduction in costs and also to a lower complexity of the fuel delivery device Service life with contaminated fuel allows.
  • Fig. 1 shows a cross section through a fuel tank with a fuel conveyor with a permeable first and second inner region
  • Fig. 2 shows a cross section through a fuel tank with a fuel conveyor with a fully permeable prefilter pot with supporting fabric
  • Fig. 3 shows a cross section through a fuel tank with a fuel conveyor with non-permeable filter walls and a Vorfilterdeckel
  • FIG. 4 shows a cross section through a fuel tank with a fuel delivery device having a permeable first inner region and a non-permeable second inner region
  • FIG. 5 shows a cross section through a fuel tank with a fuel conveyor according to another embodiment of the invention
  • Fig. 6 shows a perspective side view of a fuel conveyor according to another embodiment of the invention
  • Fig. 7 shows a cross section through a fuel conveyor to a tank flange according to another embodiment of the invention
  • a cross section through a fuel tank 3 with a fuel conveyor 1 is shown schematically.
  • the fuel delivery device 1 has a pump 5 and a prefilter 7 designed as a prefilter pot.
  • a pressure regulator 25 is further arranged in the prefilter pot.
  • the pressure regulator 25 may be arranged outside the prefilter pot as in FIG. 5 and connected to the interior of the pot by means of a line.
  • the pump 5 is connected by means of a conduit to a combustion engine 23, such as a motor.
  • the pressure regulator 25 is also connected to the engine 23 and optionally also to the pump 5.
  • the fuel 9, which is not required for the current driving operation, is conducted back into the prefilter pot by means of the pressure regulator 25.
  • the fuel return is indicated by reference numeral 39.
  • the pot-shaped or trough-shaped prefilter 7 has a filter bottom 11 and one or more filter walls 13.
  • the filter wall 13 has a first outer region 15, which corresponds to a filter outer wall, and a first inner region 17, which corresponds to a filter inner wall.
  • the filter walls 13 can be designed as a fuel permeable filter surface or as a non-permeable wall.
  • first inner regions may be permeable to the fuel 9 and the outer regions 15 may be non-permeable.
  • the 9 permeable filter fabric for fuel is shown dotted.
  • the first outer region 15 of the filter wall 13 is shown as not permeable to fuel 9 wall surface, for example made of plastic or metal.
  • the first inner region 17 of the filter wall 13 is permeable to fuel 9.
  • the filter bottom 11 has a second outer region 19, which is closest to the bottom of the tank 3 and rests on it. Furthermore, the filter bottom 11 has a second inner region 21, which is designed, for example, parallel to the second outer region and faces the interior of the prefilter or of the prefilter pot.
  • the filter bottom 11 and the filter wall 13 have a e.g. continuous or contiguous cavity 31 between the individual outer and inner regions. The pump 15 communicates with the cavity 31 and sucks from this filtered fuel 9 from.
  • the pre-filter 7 is shown as a prefilter pot with completely permeable for fuel filter bottom 11 and filter wall 13.
  • the cavity 13 is filled with a support fabric 33.
  • the fuel pump 5 is shown in operation, so that the level of the fuel 9 in the pre-filter 7 is higher than the level of the fuel 9 in the rest of the fuel tank 3. This is partly caused by the fact that the fuel return from the pressure regulator 25th collected in the prefilter pot.
  • a concentration of the fuel 9 is achieved in the output range of the fuel pump, even with low fuel level and critical driving situations.
  • the filter surface of the prefilter is considerably increased by the cup-shaped design of the prefilter 7, which also increases the extractable surface within the fuel tank 3.
  • FIG. 3 shows an exemplary embodiment of the prefilter 7 with filter walls 13 that are impermeable to fuel 9. This can ge in the prefilter pot stored fuel 9 does not flow off laterally and can be sucked in pumping operation through the second outer region 19 directly from the fuel tank 3 or through the second inner region 21 from the interior of the prefilter pot.
  • a prefilter cover 27 is shown.
  • the pre-filter cover covers the pre-filter 7, so that a closed space is formed inside the prefilter pot.
  • the Vorfilterdeckel 27 can prevent spilling out of the fuel, for example, when cornering, braking or driving uphill.
  • the pre-filter cover 27 has a recess 29 into which the pump 5 or a line to the pump 5 can be inserted.
  • the pre-filter cover 27 may have a further recess 29 through which the fuel return 39 and the pressure regulator 25 is in communication with the interior of the prefilter pot.
  • FIG 4 shows an embodiment in which the second inner region 21 of the filter bottom 11 is not permeable to fuel 9 and the pump 5 sucks the fuel 9 from the interior of the prefilter pot 7 through the first inner region 17 of the filter wall 13.
  • Fig. 5 the fuel delivery device 11 is shown during operation of the pump 5.
  • the pump is shown as a "pump on a stick" and is connected by means of a suspension to the tank flange 41.
  • the pressure regulator 25 is arranged outside the prefilter pot 7 and connected by means of a line to the interior of the prefilter pot.
  • the prefilter 7 is covered with a prefilter cover 27 and the pump 5 is inserted into the prefilter pot through a recess 29 in the prefilter cover 27.
  • the cavity between the inner and outer regions of the filter bottom 11 and the filter walls 13 is with a support fabric 33 filled.
  • FIG. 6 another embodiment of the fuel delivery device 1 is shown in perspective.
  • the pump 5 is in communication with a combustion engine 23 and is located partially outside the prefilter 7 designed as a prefilter pot.
  • the filter walls 13 are designed to be non-permeable to fuel 9 in an upper region. In a lower region of the filter walls 13, fuel-permeable and fuel-non-permeable regions alternate.
  • the second Interior region 21, that is, the filter base 11 facing the pump 5, is permeable to fuel.
  • FIG. 7 shows a further cross section through a fuel delivery device 1.
  • the fuel delivery device 1 is in communication with the tank flange 41.
  • the attachment to the tank flange for example, as indicated in Fig. 5, by means of a holder on the pump 5 or as shown in Fig. 7, by means of a holder on the pre-filter. 7 happen.
  • the pre-filter cover 27 is designed such that it surrounds the pump 5 located in the interior of the prefilter pot 7 to the bottom.

Landscapes

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

Abstract

L'invention concerne un dispositif de refoulement de carburant (1) pour un réservoir de carburant (3). Le dispositif de refoulement de carburant (1) présente une pompe (5), sur laquelle est monté un préfiltre (7). Le préfiltre (7) est conçu pour stocker du carburant (9) pendant le fonctionnement de la pompe (5). A cet effet, le préfiltre (7) est par exemple conçu sous forme de préfiltre formant pot, dans lequel est collecté un excédent de carburant (39) provenant d'un régulateur de pression (25).
PCT/EP2011/063833 2010-10-08 2011-08-11 Dispositif de refoulement de carburant comportant un préfiltre en forme de pot WO2012045508A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010042196.0 2010-10-08
DE102010042196A DE102010042196A1 (de) 2010-10-08 2010-10-08 Kraftstoff-Fördereinrichtung mit topfförmigem Vorfilter

Publications (1)

Publication Number Publication Date
WO2012045508A1 true WO2012045508A1 (fr) 2012-04-12

Family

ID=44630041

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/063833 WO2012045508A1 (fr) 2010-10-08 2011-08-11 Dispositif de refoulement de carburant comportant un préfiltre en forme de pot

Country Status (2)

Country Link
DE (1) DE102010042196A1 (fr)
WO (1) WO2012045508A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265525A (zh) * 2014-09-25 2015-01-07 苏州路云机电设备有限公司 一种手持式磨削机用油箱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130614A1 (de) * 1991-09-14 1993-03-18 Bayerische Motoren Werke Ag Traeger, insbesondere fuer eine in einem kraftstoffbehaelter angeordnete kraftstoffpumpe
DE4307949A1 (de) * 1993-03-12 1994-09-15 Bayerische Motoren Werke Ag Kraftstoffbehälter
JP2006194239A (ja) * 2004-12-13 2006-07-27 Aisan Ind Co Ltd 燃料供給装置
DE102005058248A1 (de) * 2005-06-30 2007-01-04 Mitsubishi Denki K.K. Kraftstofffördereinheit
EP1978236A2 (fr) * 2007-04-06 2008-10-08 Aisan Kogyo Kabushiki Kaisha Filtre d'aspiration et dispositif d'alimentation en carburant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130614A1 (de) * 1991-09-14 1993-03-18 Bayerische Motoren Werke Ag Traeger, insbesondere fuer eine in einem kraftstoffbehaelter angeordnete kraftstoffpumpe
DE4307949A1 (de) * 1993-03-12 1994-09-15 Bayerische Motoren Werke Ag Kraftstoffbehälter
JP2006194239A (ja) * 2004-12-13 2006-07-27 Aisan Ind Co Ltd 燃料供給装置
DE102005058248A1 (de) * 2005-06-30 2007-01-04 Mitsubishi Denki K.K. Kraftstofffördereinheit
EP1978236A2 (fr) * 2007-04-06 2008-10-08 Aisan Kogyo Kabushiki Kaisha Filtre d'aspiration et dispositif d'alimentation en carburant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265525A (zh) * 2014-09-25 2015-01-07 苏州路云机电设备有限公司 一种手持式磨削机用油箱

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Publication number Publication date
DE102010042196A1 (de) 2012-04-12

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