EP0536159A1 - Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir. - Google Patents

Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir.

Info

Publication number
EP0536159A1
EP0536159A1 EP91909637A EP91909637A EP0536159A1 EP 0536159 A1 EP0536159 A1 EP 0536159A1 EP 91909637 A EP91909637 A EP 91909637A EP 91909637 A EP91909637 A EP 91909637A EP 0536159 A1 EP0536159 A1 EP 0536159A1
Authority
EP
European Patent Office
Prior art keywords
channel
chamber
delivery
unit according
impeller
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
EP91909637A
Other languages
German (de)
English (en)
Other versions
EP0536159B1 (fr
Inventor
Ulrich Kemmner
Kurt Frank
Michael Niederkofler
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 EP0536159A1 publication Critical patent/EP0536159A1/fr
Application granted granted Critical
Publication of EP0536159B1 publication Critical patent/EP0536159B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F04D5/003—Regenerative pumps of multistage type
    • F04D5/005—Regenerative pumps of multistage type the stages being radially offset
    • 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
    • F02M37/20—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 characterised by means for preventing vapour lock
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/001—Preventing vapour lock
    • F04D9/002—Preventing vapour lock by means in the very pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/01—Materials digest

Definitions

  • the invention relates to an aggregate according to the type of the main claim.
  • a delivery unit is already known (DE-OS 35 09 374), in which this bore is arranged directly in the delivery channel and is provided with an elastic valve flap which remains in its open position during gas delivery, but in the case of fuel change from the "tougher” medium the spring force is deformed and the channel-side mouth of the bore closes.
  • Such a structure requires a particularly complex assembly of the valve flap.
  • the open valve flap will graze the impeller of the feed pump, causing undesirable noises and ultimately being destroyed.
  • the conveyor unit according to the invention with the characterizing features of the main claim has the advantage that there are no moving components that are subject to wear during operation.
  • the assembly of such parts is also eliminated.
  • the measures listed in the subclaims allow advantageous further developments and improvements of the delivery unit specified in the main claim.
  • FIG. 1 shows a schematic illustration of an arrangement with a fuel delivery tank, a fuel delivery unit and an internal combustion engine of a motor vehicle
  • FIG. 2 shows a partial longitudinal section through the delivery unit according to FIG. 1 in an enlarged view, along the line II-II in FIG. 3
  • FIG 3 shows a section through a pump chamber cover belonging to the conveyor unit according to FIG. 2, on the suction opening side, along the line III-III.
  • FIG. 1 shows a fuel storage tank 10 in which a fuel delivery unit 12 is arranged.
  • a pressure line 16 which leads to an internal combustion engine 18, is connected to a pressure connection 14 of the fuel delivery unit 12.
  • the fuel delivery unit 12 sucks fuel from the storage tank 10 via a suction nozzle 13 and delivers it the fuel to the internal combustion engine 18.
  • the fuel delivery unit 12 is equipped with an electric drive motor 20 (FIG. 2), the motor armature 22 of which is seated on an armature shaft 24.
  • the armature shaft 24 penetrates at one end 26 a partition wall 28 which separates a space 30 in which the electric motor 20 is located from a feed pump 32.
  • the feed pump 32 is designed as a flow pump.
  • Your impeller 34 is rotatably connected to the end 26 of the armature shaft 24.
  • the impeller 34 is arranged in a pump chamber 36 which is delimited on the one hand by the partition wall 28 to the drive motor 20 and on the other hand by a cover 38 in which the suction nozzle 13 is located.
  • the feed pump is designed as a two-stage flow pump. However, this is meaningless with regard to the invention, because the invention can also be applied to a single-stage flow pump without difficulty.
  • the impeller 34 which has an inner, first ring 40 of vanes, rotates in the pump chamber 36. In its peripheral area, the impeller 34 has a second ring 42 of vanes.
  • the second ring 42 consists of two partial rings, each of which is formed on one of the two end faces 44, 46 of the substantially circular-cylindrical impeller 34.
  • the two partial wing rings of the second wing ring 42 have been given the reference numbers 51 and 53 in FIG.
  • the partition wall 28 is fixedly connected to a housing part 54 which surrounds the conveyor assembly 12.
  • the pump chamber 36 is closed by the cover 38. This is held in its receptacle by an inwardly shaped edge 56 of the housing part 54.
  • a first, inner conveying channel 50 extends counterclockwise from a suction opening 58 in the suction nozzle 13 to an intermediate channel 60 which extends essentially radially.
  • a second or outer delivery channel 52 connects to the intermediate channel 60. This extends along an edge shoulder 62 of the cover 38 to close to the intermediate channel 60
  • Corresponding conveyor channels 50, 52 are arranged in the dividing wall 28. Viewed in the radial direction, the two conveyor channels 50 and 52 are spaced apart from one another, so that a separating surface 64 remains between them the separating surfaces 64 of the dividing wall 28 and the cover 38 also lie opposite one another. 1, which has the pressure connection 14.
  • Figure 3 further shows that three bores 70 are arranged in the separating surface 64 of the cover 48, which lead from the pump chamber 36 to the suction side of the pump 32. These bores 70 therefore connect the Pump chamber with an area of the system in which there is low pressure piel the tank interior.
  • These three degassing bores 70 are arranged one behind the other in the running direction (arrow 72) of the impeller 34 in a groove-like groove 74 which extends essentially between the two delivery channels 50 and 52 in the direction of rotation arrow 72.
  • the two delivery channels 50 and 52 thus extend from the suction opening 58 to the pressure opening 68, the cover 38 having the suction opening 58 and the partition 28 having the pressure opening 68.
  • the hydraulic connection between the gegen ⁇ each other in the axial direction lying similar conveying channels is done once by the ⁇ between the wings of the first ring 40 existing openings or remaining annular gap by a between the edge of shoulder 62 and the outer circumferential surface of the impeller 34 76.
  • the course of the groove-like groove 74 can also be made clear by the fact that part of the groove 74 is in Direction of rotation (arrow 72) and another part of the groove 74 extends counter to this direction of rotation of the impeller 34.
  • the two pump chamber 36 in the axial direction of the Rades 34 bounding walls 28 and ⁇ are made of plastic in the embodiment.
  • the groove-like groove 74 is formed in the cover 38.
  • the conveyor unit according to the invention works as follows:
  • the feed pump 32 sucks fuel from the storage tank 10 via the suction opening 58 and presses it in the direction of arrow 72 through the first feed channel 50 and the intermediate channel 60 into the outer feed channel 52, from where from which fuel enters the space 30 of the drive motor 20 via the pressure opening 68 and leaves it via the pressure port 14.
  • gas bubbles mentioned occur, for example, through cavitation, which takes place in certain areas of the feed pump. Such gas bubbles can also be present in that the pump has been completely emptied and the feed pump now initially conveys this air. In all cases, it should be avoided that the gas bubbles remain in the system, reach the internal combustion engine 18 via the pressure line 16 and interfere with their operation.

Abstract

On propose un organe servant à alimenter le moteur à combustion interne (18) d'un véhicule à moteur avec du carburant provenant d'un réservoir (10). L'organe d'alimentation (12) comprend une pompe d'alimentation disposée à l'intérieur du réservoir et se présentant sous la forme d'une pompe d'écoulement, dont la roue à ailettes (34) tournante, de forme essentiellement cylindrique circulaire, est disposée dans une chambre (36) correspondante, également cylindrique circulaire, et, dans une au moins des deux parois de la chambre, un canal d'alimentation (50) approximativement circulaire, de section en forme d'encoche, s'étend d'une ouverture d'aspiration (58) aboutissant à la chambre jusqu'à une ouverture sous pression (68) partant de celle-ci et cette paroi avant de la chambre est traversée, au niveau de l'ouverture sous pression, par un orifice (70) qui relie la chambre à une zone basse pression du circuit. On obtient, d'une manière simple, une extraction particulièrement fiable des bulles de gaz à l'extérieur de la pompe et donc de la section d'alimentation, par le fait que cet orifice est situé dans une surface étanche (64) qui délimite transversalement le canal d'alimentation relativement à l'axe de rotation de la roue à ailettes.
EP91909637A 1990-06-28 1991-05-27 Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir Expired - Lifetime EP0536159B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4020520A DE4020520A1 (de) 1990-06-28 1990-06-28 Aggregat zum foerdern von kraftstoff vom vorratstank zur brennkraftmaschine eines kraftfahrzeuges
DE4020520 1990-06-28
PCT/DE1991/000449 WO1992000449A1 (fr) 1990-06-28 1991-05-27 Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir

Publications (2)

Publication Number Publication Date
EP0536159A1 true EP0536159A1 (fr) 1993-04-14
EP0536159B1 EP0536159B1 (fr) 1994-08-31

Family

ID=6409210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91909637A Expired - Lifetime EP0536159B1 (fr) 1990-06-28 1991-05-27 Organe pour l'alimentation du moteur a combustion interne d'un vehicule a moteur avec du carburant provenant d'un reservoir

Country Status (5)

Country Link
US (1) US5338151A (fr)
EP (1) EP0536159B1 (fr)
JP (1) JP3027186B2 (fr)
DE (2) DE4020520A1 (fr)
WO (1) WO1992000449A1 (fr)

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KR960001631B1 (ko) * 1991-05-14 1996-02-03 미쓰비시덴키가부시키가이샤 원주류식(圓周流式) 액체펌프
DE4322370C2 (de) * 1992-07-08 1998-10-29 Mannesmann Vdo Ag Flüssigkeitspumpe
GB9220991D0 (en) * 1992-10-06 1992-11-18 Dowty Defence Lubrication system
DE4240592A1 (de) * 1992-12-03 1994-06-09 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs
DE4240593A1 (de) * 1992-12-03 1994-06-09 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs
DE4318122C2 (de) * 1993-06-01 2002-01-17 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs
US5413457A (en) * 1994-07-14 1995-05-09 Walbro Corporation Two stage lateral channel-regenerative turbine pump with vapor release
DE4428254A1 (de) * 1994-08-10 1996-02-15 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
EP0735271B1 (fr) * 1995-03-31 2002-06-19 BITRON S.p.A. Pompe à carburant du type à écoulement latéral pour véhicule
JP3388946B2 (ja) * 1995-06-23 2003-03-24 愛三工業株式会社 燃料ポンプ装置
US5580213A (en) * 1995-12-13 1996-12-03 General Motors Corporation Electric fuel pump for motor vehicle
US5596970A (en) * 1996-03-28 1997-01-28 Ford Motor Company Fuel pump for an automotive fuel delivery system
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US8128821B2 (en) 2006-06-14 2012-03-06 Fluid Equipment Development Company, Llc Reverse osmosis system with control based on flow rates in the permeate and brine streams
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Also Published As

Publication number Publication date
JP3027186B2 (ja) 2000-03-27
DE59102760D1 (de) 1994-10-06
JPH05508459A (ja) 1993-11-25
EP0536159B1 (fr) 1994-08-31
DE4020520A1 (de) 1992-01-02
US5338151A (en) 1994-08-16
WO1992000449A1 (fr) 1992-01-09

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