WO2000043665A1 - Dispositif d'alimentation en carburant - Google Patents

Dispositif d'alimentation en carburant Download PDF

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Publication number
WO2000043665A1
WO2000043665A1 PCT/DE1999/003778 DE9903778W WO0043665A1 WO 2000043665 A1 WO2000043665 A1 WO 2000043665A1 DE 9903778 W DE9903778 W DE 9903778W WO 0043665 A1 WO0043665 A1 WO 0043665A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
pump
delivery device
stage
housing
Prior art date
Application number
PCT/DE1999/003778
Other languages
German (de)
English (en)
Inventor
Kurt Frank
Ingo Richter
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 WO2000043665A1 publication Critical patent/WO2000043665A1/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
    • F02M37/048—Arrangements for driving regenerative pumps, i.e. side-channel 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
    • F02M37/04—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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps

Definitions

  • the invention relates to a delivery device for fuel according to the preamble of the main claim.
  • Delivery devices for fuel of the generic type are already known, in which the fuel is delivered from a fuel tank, for example, to an injection system of the internal combustion engine of a motor vehicle.
  • Such a delivery device is described in DE 44 44 854 AI, in which the delivery pump is driven by an electric motor and the fuel flows through a pre-filter in front of the delivery pump and is guided under the delivery pressure through a main filter after the delivery pump.
  • These components are arranged in a filter bowl with a removable cover, the electric motor and the feed pump is in a central chamber and the main filter is in an annular chamber arranged concentrically around it.
  • the feed device for fuel described at the outset is advantageously further developed with the features of the characterizing part of the main claim according to the invention in that the feed pump and the electric motor are designed as disk-shaped electric pumps which, in a first approximation, form the bottom of a housing into which fuel can be pumped in a simple manner .
  • the electric motor of the disk-shaped electric pump can preferably be an electronically commutated motor which is attached radially on the outside to the pump impeller. This can be achieved inexpensively with a relatively simple construction, the flat design advantageously making a large housing volume available as a reservoir above the disk-shaped electric pump.
  • the disk-shaped electric pump carries out a two-stage pumping process with which the fuel is sucked from the fuel tank in the first stage and is pumped into the reservoir located above the disk-shaped electric pump in the housing.
  • the fuel is conveyed from the reservoir to the outlet of the delivery device and from there in a preferred exemplary embodiment via a fuel line to the injection valves of an internal combustion engine.
  • the stages for the pumping processes are formed by means of separate pumping chambers in the pump impeller, which in turn are each associated with inputs and outputs on the disc-shaped electric pump are provided for the flowing fuel.
  • the delivery module can be equipped with at least one filter element in the fuel flow, the filter element in the fuel flow being arranged according to the invention in an advantageous manner between the first and the second stage.
  • the second stage of the pumping process in particular is very well protected against dirt and therefore also against wear and blocking.
  • the necessary filter effect can also, possibly additionally, be achieved by arranging a filter device which is attached after the second stage before the exit of the conveyor device.
  • a well-known hollow cylindrical filter element in a filter bowl can be easily sealed with the inlet to a correspondingly shaped nozzle at the respective outlet on the disk-shaped electric pump.
  • the first stage of the pumping process can advantageously also be protected from contamination in a manner known per se with a prefilter in the fuel flow from the tank bottom area to the entrance of the first stage of the feed pump.
  • a check valve can be arranged according to the invention in this fuel flow, before or after the pre-filter. It is particularly advantageous here to attach the check valve after the pre-filter, which can be designed as a sieve, in order to minimize the risk of contamination here too.
  • Figure 1 is a conveyor with a two-stage disc-shaped electric pump
  • Figure 2 shows a detailed section through the electric pump of Figure 1 with a check valve
  • Figure 3 shows an embodiment of a conveyor with a filter device after the first stage
  • Figure 4 shows an embodiment of a conveyor with a filter device after the second stage.
  • FIG. 1 shows the basic structure of a delivery device 1 for fuel, a section of which shows a fuel tank 2 into which the delivery device 1 with a tank flange 3 is inserted from above. On the tank flange 3 there is a connecting piece 4 for a delivery line, not shown here, which leads to the internal combustion engine of a motor vehicle and transports the fuel according to arrows 5.
  • the funding agencies Direction 1 has a housing 6 acting as a reservoir for fuel, in which a disk-shaped electric pump 7 is located in the lower bottom region.
  • the electric pump 7 is designed in two stages and draws in the fuel from the bottom area of the fuel tank 2, possibly via a prefilter according to FIG. 2.
  • the electric pump has an electronically commutated motor 8 on the outer edge of the pump impeller 9.
  • the first pump stage is formed here by a pump chamber 10, through which the fuel is conveyed from an inlet 11 to an outlet 12 when the electric pump 7 is operating.
  • the reservoir in the interior of the housing 6 can thus be filled.
  • the second pump stage is formed by a pump chamber 13, through which the fuel is conveyed from an inlet 14 to an outlet 15 during operation of the electric pump 7.
  • a connecting line 16, which leads to the connecting piece 4 of the conveying device 1, can thus be supplied with fuel.
  • the electronically commutated motor 8 is supplied with the necessary electrical energy via connecting lines 17, which lead to a connection 18 in the tank flange 3.
  • a conventionally constructed check valve 20 is connected in front of the inlet 11 of the first pump chamber 10 in order to prevent the reservoir in the housing 6 from draining over the disk-shaped electric pump 7 during long shutdown phases.
  • the housing 6 is closed at this point with a sieve 21 as a prefilter to the tank 2 towards the bottom, here the check valve 20 lies between the sieve 21 and the input 11 of the first pump stage.
  • an extension of the representation according to FIG. 1 has a filter device 22 which is sealingly connected to the outlet 12 of the first pump chamber 10.
  • the fuel delivered in the first pump stage thus initially reaches the outer upstream position of a hollow cylindrical filter element 23 and flows through this filter element 23 according to arrows 24.
  • the fuel cleaned by the filter element 23 reaches the reservoir of the housing 6 through a central outlet 25 of the filter device 22 and from there in the manner explained with reference to FIG. 1 to the connecting piece 4 of the conveying device 1.
  • a filter device 26 is present, which is connected to the outlet 15 of the second pump chamber 13 in a sealing manner.
  • the fuel delivered in the second pump stage thus also reaches the outer upstream position of the hollow cylindrical filter element 23 and flows through this filter element 23 according to the arrows 24.
  • the fuel cleaned by the filter element 23 then passes through a central outlet 27 of the filter device 26 via a Connection line 28 to the connecting piece 4 of the conveyor device 1.

Abstract

L'invention concerne un dispositif d'alimentation en carburant comprenant une pompe de circulation (7) entraînée par un moteur électrique (8), et un carter (6) prévu pour loger le moteur électrique (8) et la pompe de circulation (7) à l'intérieur d'un réservoir de carburant (2), de telle façon que le carburant soit alimenté à partir de la zone du fond du réservoir (2) dans le carter (6), puis vers une tubulure de raccordement (4) du dispositif d'alimentation (1), caractérisé en ce que la pompe de circulation et le moteur électrique (8) sont disposés sous forme d'une pompe électrique (7) en forme de disque, à deux étages, au fond du carter (6). De préférence, le carburant est pompé dans le premier étage, à partir du réservoir (2), dans le réservoir formé dans le carter (6) et, dans le deuxième étage, à partir du réservoir vers la tubulure de raccordement (4).
PCT/DE1999/003778 1999-01-20 1999-11-27 Dispositif d'alimentation en carburant WO2000043665A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902072.8 1999-01-20
DE1999102072 DE19902072C1 (de) 1999-01-20 1999-01-20 Fördereinrichtung für Kraftstoff

Publications (1)

Publication Number Publication Date
WO2000043665A1 true WO2000043665A1 (fr) 2000-07-27

Family

ID=7894814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/003778 WO2000043665A1 (fr) 1999-01-20 1999-11-27 Dispositif d'alimentation en carburant

Country Status (2)

Country Link
DE (1) DE19902072C1 (fr)
WO (1) WO2000043665A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195494A (en) * 1992-02-27 1993-03-23 Walbro Corporation Fuel delivery system with outlet pressure regulation
DE4341564A1 (de) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
EP0702142A1 (fr) * 1994-09-15 1996-03-20 Marwal Systems Ensemble de pompage incorporant un régulateur de pression, pour réservoir de carburant de véhicule automobile et réservoir ainsi équipé
DE4444854A1 (de) 1994-12-16 1996-06-20 Bosch Gmbh Robert Förderaggregat
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
DE19725941A1 (de) * 1997-06-19 1998-12-24 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19811893A1 (de) * 1998-03-18 1999-09-23 Bosch Gmbh Robert Mehrstufige Seitenkanalpumpe für Kraftstoff für ein Kraftfahrzeug
DE19824135A1 (de) * 1998-05-29 1999-12-09 Bosch Gmbh Robert Förderaggregat für Kraftstoff

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4239488C2 (de) * 1992-11-25 2001-06-28 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195494A (en) * 1992-02-27 1993-03-23 Walbro Corporation Fuel delivery system with outlet pressure regulation
DE4341564A1 (de) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
EP0702142A1 (fr) * 1994-09-15 1996-03-20 Marwal Systems Ensemble de pompage incorporant un régulateur de pression, pour réservoir de carburant de véhicule automobile et réservoir ainsi équipé
DE4444854A1 (de) 1994-12-16 1996-06-20 Bosch Gmbh Robert Förderaggregat
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
DE19725941A1 (de) * 1997-06-19 1998-12-24 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19811893A1 (de) * 1998-03-18 1999-09-23 Bosch Gmbh Robert Mehrstufige Seitenkanalpumpe für Kraftstoff für ein Kraftfahrzeug
DE19824135A1 (de) * 1998-05-29 1999-12-09 Bosch Gmbh Robert Förderaggregat für Kraftstoff

Also Published As

Publication number Publication date
DE19902072C1 (de) 2000-07-20

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