EP1537323A1 - Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile - Google Patents

Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile

Info

Publication number
EP1537323A1
EP1537323A1 EP03794796A EP03794796A EP1537323A1 EP 1537323 A1 EP1537323 A1 EP 1537323A1 EP 03794796 A EP03794796 A EP 03794796A EP 03794796 A EP03794796 A EP 03794796A EP 1537323 A1 EP1537323 A1 EP 1537323A1
Authority
EP
European Patent Office
Prior art keywords
housing
fuel
unit
pressure
pump part
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.)
Granted
Application number
EP03794796A
Other languages
German (de)
English (en)
Other versions
EP1537323B1 (fr
Inventor
Peter Schelhas
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 EP1537323A1 publication Critical patent/EP1537323A1/fr
Application granted granted Critical
Publication of EP1537323B1 publication Critical patent/EP1537323B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/048—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing around the moving part of the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention is based on a unit for delivering fuel according to the preamble of the main claim.
  • an electric fuel pump is known in which fuel is sucked directly into a pump part via a suction nozzle.
  • the unit according to the invention with the characterizing features of the main claim has the advantage that the sealing of the housing can be significantly simplified in a simple manner by the drive part of the unit being arranged on the suction side.
  • the fuel is drawn into the pump part via a suction-side connection through the drive part.
  • the pressure builds up in an impeller of the pump part, then the fuel leaves the unit via a check valve. This means that only a small volume of the unit is under a comparatively high pressure built up by the pump part.
  • blades or fins are easy to manufacture and inexpensive to manufacture.
  • FIG. 1 shows an assembly according to the invention for conveying fuel for an “in tank” application
  • FIG. 2 shows an assembly according to the invention for conveying fuel for an “in 1ine” application.
  • the unit 1 according to the invention for example an electric fuel pump, must supply an internal combustion engine with sufficient fuel in all operating states at a necessary pressure.
  • the electric fuel pump forming the unit 1 has a housing 2 consisting of a first housing part 3 and a second housing part 4. Both housing parts 3, 4 are detachably connected to one another, for example by a screw connection, a snap connection or a
  • the first housing part 3 is, for example, ceiling-shaped and the second housing part 4 is, for example, cup-shaped.
  • a tubular input connection 5 with an input channel 6 and electrical connections 7 are arranged on the first housing part 3.
  • the electrical connections 7 are, for example, electrical plug contacts which penetrate the housing part 3 and are electrically connected to an actuator 15.
  • On a bottom 8 of the second A tubular output connection 9 with an output channel 10 is arranged in one part of the housing part 4.
  • the outlet channel 10 has a check valve 13 (only shown schematically) that blocks the cross section of the outlet channel 10 and opens outwards at a predetermined pressure.
  • a pump part 14 is arranged on the side of the housing 2 facing the output connection 9 and the actuator 15, for example an electric motor, is arranged on the side of the pump part 14 facing the input connection 5.
  • Actuator 15 drives pump part 14 with a shaft 16.
  • the pump part 14 can be a flow pump or a positive displacement pump.
  • a flow pump is shown and described for example in DE 40 20 521 AI and a positive displacement pump for example in DE 39 12 965 AI, the contents of DE 40 20 521 AI and
  • the pump part 14 is axially fixed in the second housing part 4 by a holding element 17 on the side facing the input connection 5 in a non-positive or positive manner.
  • the holding element 17 can be fastened to the second housing part 4, for example by screwing, clipping, clamping, gluing or welding.
  • a suction side 20 of the unit 1 faces the input connection 5 and comprises a section of the unit upstream of the pump part 14.
  • a pressure side 21 of the unit 1 faces the outlet connection 9 and comprises a section of the unit downstream of the pump part 14.
  • a sealing element 18 is arranged between the bottom 8 and the pump part 14, which seals the pressure side 21 against the suction side 20 and prevents the fuel from flowing back from the pressure side 21 to the suction side 20.
  • Conveying elements 24 can be arranged on the actuator 15, for example on a rotating armature of the actuator 15, which already effect a so-called pre-delivery to the pump part 14 on the suction side 20 of the pump part 14 and generate a pressure increase and thus avoid hot delivery problems.
  • the conveying elements 24 are, for example, helical blades, lamellae or oblique grooves, as shown for example in DE 91 02 047. Energy is supplied to the fuel by the conveyor elements, which energy is partially converted into pressure energy.
  • the housing 2 is sealed at a parting line 26 between the first housing part 3 and the second housing part 4, for example with a seal 27.
  • the parting line 26 and the seal 27 are arranged on the suction side 20.
  • the parting line 26 is formed by overlapping an edge of the first housing part 3 over the second housing part 4.
  • the seal 27 can be omitted if the unit 1 is installed in a fuel tank 25 (“in tank”), because in this case the non-sealed joint 26 as well as the
  • Input channel 6 fuel is sucked in. If the assembly 1 is arranged outside the fuel tank 25 in a fuel line 22 (“in line”) connected to the outlet connection 9, the seal 27 is necessary, since otherwise air would be sucked into the assembly through the parting line 26 or the risk of there would be unwanted fuel leakage.
  • the electrical connections 7 and their penetration through the first housing part 3 are like the parting line 26 and the Seal 27 arranged on the suction side 20, since their sealing is cheaper to implement on the suction side than on the pressure side due to the lower requirements.
  • the penetration of the electrical connections 7 through the first housing part 3 is in the "in line"
  • the fuel passes from the fuel tank 25 via the input connection 5 past the actuator 15 or through the actuator 15 into the pump part 14.
  • a pressure is built up in the fuel there and the fuel is conveyed into the fuel line 22 via the check valve 10 and the output connection 9.
  • the fuel line 22 leads, for example, to a not shown
  • the check valve 10 prevents a backflow of fuel to the fuel tank 25 and in this way ensures that the pressure in the fuel line 22 adjoining the outlet connection 9 is maintained even when the unit 1 is not delivering.
  • a pressure relief valve 23 is arranged, which opens when the pressure on the pressure side 21 is too high. The fuel can then flow back into the fuel tank 25 from the pressure side 21 via the pressure relief valve 23 in the “in tank” application. In this way, damage to the unit 1 due to a malfunction is avoided.
  • the unit according to FIG. 2 differs from the unit according to FIG. 1 in that the unit 1 is arranged outside of a fuel tank 25. Therefore, the pressure relief valve 23 opens if the pressure on the pressure side 21 is too high and the fuel can flow back to the suction side 20 via a line 29 in the “in line” application. It is also possible to arrange a pressure relief valve 23 within the housing 2 in such a way that the fuel at an excessively high pressure on the pressure side 21 can flow back from the pressure side 21 to the suction side 20. In this way, damage to the unit 1 due to a malfunction is avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Dans les pompes électriques à carburant classiques, le carburant est aspiré directement dans une partie pompe de sorte qu'un carter et un moteur électrique de la pompe électrique à carburant sont soumis à une pression créée par la partie pompe, en aval de cette dernière. Les pompes électriques à carburant actuelles fonctionnant à des pressions relativement élevées, le carter doit être étanchéifié de manière complexe en aval de la partie pompe. L'objectif de l'invention est créer une unité dans laquelle l'étanchéification du carter est considérablement simplifiée, de façon à réduire considérablement les coûts de fabrication. A cet effet, un actionneur (15) est monté sur un côté aspiration (20) du carter (2) de sorte que le carburant est aspiré par l'intermédiaire d'un raccord d'entrée (5) du carter (2) en passant par l'actionneur (15). Etant donné que la pression s'établit tout d'abord dans la partie pompe (14) et que le carburant ressort de l'unité par l'intermédiaire d'un raccord de sortie (9), seul un faible volume de ladite unité reste soumis à une pression relativement élevée.
EP03794796A 2002-09-04 2003-08-22 Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile Expired - Lifetime EP1537323B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10240831 2002-09-04
DE2002140831 DE10240831A1 (de) 2002-09-04 2002-09-04 Aggregat zum Fördern von Kraftstoff aus einem Kraftstofftank zur Brennkraftmaschine eines Kraftfahrzeuges
PCT/DE2003/002818 WO2004025111A1 (fr) 2002-09-04 2003-08-22 Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile

Publications (2)

Publication Number Publication Date
EP1537323A1 true EP1537323A1 (fr) 2005-06-08
EP1537323B1 EP1537323B1 (fr) 2006-07-26

Family

ID=31724321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03794796A Expired - Lifetime EP1537323B1 (fr) 2002-09-04 2003-08-22 Unite servant a acheminer du carburant entre un reservoir de carburant et un moteur a combustion interne d'un vehicule automobile

Country Status (4)

Country Link
EP (1) EP1537323B1 (fr)
JP (1) JP2005537436A (fr)
DE (2) DE10240831A1 (fr)
WO (1) WO2004025111A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008000805A1 (de) 2008-03-25 2009-10-01 Robert Bosch Gmbh Kraftmaschine sowie Verfahren zum Verlängern der Nutzungsdauer von Kraftstoff
DE102014208614A1 (de) * 2014-05-08 2015-11-12 Robert Bosch Gmbh Kraftstoffpumpe
DE102015222106A1 (de) * 2015-11-10 2017-05-11 Robert Bosch Gmbh Kraftstoffpumpe mit Auslassventil im Kolben und einen den Aktor umspülenden Kraftstoffpfad

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2312525A (en) * 1941-09-05 1943-03-02 Curtis Pump Co Pump construction
DE1169297B (de) * 1956-03-08 1964-04-30 Borg Warner Brennstoff-Foerderpumpe mit rotierendem Foerderorgan
FR2141090A5 (fr) * 1971-06-01 1973-01-19 Magneti Marelli Spa
US4213745A (en) * 1978-09-11 1980-07-22 Roberts Samuel A Pump for central heating system
DE3912965A1 (de) * 1989-04-20 1990-10-25 Bosch Gmbh Robert Aggregat zum foerdern von kraftstoff
DE4020521A1 (de) * 1990-06-28 1992-01-02 Bosch Gmbh Robert Peripheralpumpe, insbesondere zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
DE9102047U1 (fr) * 1991-02-21 1992-06-25 Robert Bosch Gmbh, 7000 Stuttgart, De
DE19618452B4 (de) * 1996-05-08 2005-05-12 Robert Bosch Gmbh Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zu einer Brennkraftmaschine
DE19628781A1 (de) * 1996-07-17 1998-01-22 Voith Turbo Kg Pumpaggregat mit einer Antriebskühlung mittels der zu fördernden Flüssigkeit
DE19744599A1 (de) * 1997-10-09 1999-04-15 Volkswagen Ag Hydraulikkreislauf
JP2000018114A (ja) * 1998-06-30 2000-01-18 Mikuni Corp 電子制御燃料噴射装置用燃料供給装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004025111A1 *

Also Published As

Publication number Publication date
WO2004025111A1 (fr) 2004-03-25
DE10240831A1 (de) 2004-03-18
DE50304378D1 (de) 2006-09-07
EP1537323B1 (fr) 2006-07-26
JP2005537436A (ja) 2005-12-08

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