EP0536159B1 - Assembly for feeding fuel from the fuel tank of a motor vehicle to its internal combustion engine - Google Patents

Assembly for feeding fuel from the fuel tank of a motor vehicle to its internal combustion engine Download PDF

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Publication number
EP0536159B1
EP0536159B1 EP91909637A EP91909637A EP0536159B1 EP 0536159 B1 EP0536159 B1 EP 0536159B1 EP 91909637 A EP91909637 A EP 91909637A EP 91909637 A EP91909637 A EP 91909637A EP 0536159 B1 EP0536159 B1 EP 0536159B1
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EP
European Patent Office
Prior art keywords
delivery
chamber
passage
pump
unit
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 - Lifetime
Application number
EP91909637A
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German (de)
French (fr)
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EP0536159A1 (en
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
Priority to DE4020520A priority Critical patent/DE4020520A1/en
Priority to DE4020520 priority
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PCT/DE1991/000449 priority patent/WO1992000449A1/en
Publication of EP0536159A1 publication Critical patent/EP0536159A1/en
Application granted granted Critical
Publication of EP0536159B1 publication Critical patent/EP0536159B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00Pumps with circumferential or transverse flow
    • F04D5/002Regenerative pumps
    • F04D5/003Regenerative pumps of multistage type
    • F04D5/005Regenerative pumps of multistage type the stages being radially offset
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/04Feeding by means of driven pumps
    • F02M37/048Arrangements for driving regenerative pumps, i.e. side-channel pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/20Apparatus 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00Pumps with circumferential or transverse flow
    • F04D5/002Regenerative pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00Priming; Preventing vapour lock
    • F04D9/001Preventing vapour lock
    • F04D9/002Preventing vapour lock by means in the very pump
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00Priming; Preventing vapour lock
    • F04D9/02Self-priming pumps
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00Pumps
    • Y10S417/01Materials digest

Abstract

The proposal is for an assembly for feeding fuel from the fuel tank (10) to the internal combustion engine (18) of a motor vehicle. The feed assembly (12) comprises a feed pump arranged in the fuel tank and taking the form of a full-flow pump whose substantially cylindrical rotary impeller (34) is arranged in a correspondingly cylindrical pump chamber (36) and where at least one approximately annular feed channel (50) grooved in cross-section extends in at least one of the two chamber front walls from a suction aperture (58) opening into the pump chamber to a pressure aperture (68) leading therefrom and this chamber front wall is pierced in the region of the pressure aperture by a drilling (70) connecting the pump chamber with a region of the system in which underpressure prevails. Particularly reliable removal of gas bubbles from the pump and hence from the feed path is obtained in a simple manner in that this drilling is in a sealing surface (64) radially limiting the feed channel in relation to the axis of rotation of the impeller.

Description

    Stand der TechnikState of the art
  • Die Erfindung betrifft eine Kraftstoffpumpe, wobei das Förderaggregat mit dem Inneren des Tanks über eine Entlüftungsbohrung verbunden ist. Es ist schon ein Förderaggregat bekannt (DE-A-35 09 374), bei dem diese Bohrung direkt im Förderkanal angeordnet und mit einer elastischen Ventilklappe versehen ist, welche bei Gasförderung in ihrer Offenstellung verharrt, bei Kraftstofförderung jedoch von dem "zäheren" Medium gegen die Federkraft verformt wird und die kanalseitige Mündung der Bohrung verschließt. Ein derartiger Aufbau erfordert jedoch eine besonders aufwendige Montage der Ventilklappe. Auch besteht die Gefahr, daß bei Gasförderung die offene Ventilklappe am Flügelrad der Förderpumpe streift, dabei unerwünschte Geräusche verursacht und schließlich zerstört wird.The invention relates to a fuel pump, the delivery unit being connected to the interior of the tank via a vent hole. A delivery unit is already known (DE-A-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 against the "tougher" medium when delivering fuel the spring force is deformed and the channel-side mouth of the bore closes. Such a structure, however, requires a particularly complex assembly of the valve flap. There is also the risk that when gas is being pumped, the open valve flap will graze the impeller of the feed pump, causing undesirable noises and ultimately being destroyed.
  • Aus der GB-A-2 134 598 ist ferner ein Förderaggregat bekannt, wobei keine beweglichen, während des Betriebs einen Verschleiß unterworfenen Bauelemente vorhanden sind. Auch die Montage solcher Teile entfällt. Die Erfindung geht aus von einem Aggregat dieser Gattung. Die kennzeichnenden Merkmale von Anspruch 1 sorgen für eine wirksamere Entlüftung.A conveyor assembly is also known from GB-A-2 134 598, wherein there are no movable components which are subject to wear during operation. The assembly of such parts is also eliminated. The invention is based on an aggregate of this type. The characterizing features of claim 1 ensure more effective ventilation.
  • Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Förderaggregats möglich. Besonders vorteilhaft ist es, bei einem Förderaggregat dessen Flügelrand einen ersten und einen zweiten Kranz von Flügeln hat, von denen der zweite Flügelkranz einen größeren Radius als der erste Flügelkranz aufweist und sich in der Kammer-Stirnwand zwei, dem jeweiligen Flügelkranz zugeordnete Förderkanäle befinden, von denen der innere Förderkanal über einen Zwischenkanal mit dem äußeren Förderkanal verbunden ist, sowie die Saugöffnung am inneren und die Drucköffnung am äußeren Förderkanal angeordnet sind, sich die Bohrung in einem Bereich der Dichtfläche befindet, welcher sich zumindest im wesentlichen zwischen den beiden Förderkanälen erstreckt.The measures listed in the subclaims allow advantageous developments and improvements of the delivery unit specified in the main claim. It is particularly advantageous in the case of a conveyor unit whose wing edge has a first and a second ring of wings, of which the second wing ring has a larger radius than the first wing ring and there are two conveying channels associated with the respective wing ring in the front wall of the chamber which the inner delivery channel is connected to the outer delivery channel via an intermediate channel, and the suction opening on the inner and the pressure opening on the outer delivery channel are arranged, the bore is located in a region of the sealing surface which extends at least substantially between the two delivery channels.
  • Zeichnungdrawing
  • Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine schematische Darstellung einer Anordnung mit einem Kraftstoffördertank, einem Kraftstofförderaggregat und einer Brennkraftmaschine eines Kraftfahrzeuges, Figur 2 einen Teil-Längsschnitt durch das Förderaggregat gemäß Figur 1 in vergrößerter Darstellung, entlang der Linie II-II in Figur 3 und Figur 3 einen Schnitt durch einen zum Förderaggregat gemäß Figur 2 gehörenden, saugöffnungsseitigen Pumpenkammerdeckel, entlang der Linie III-III.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. 1 shows a schematic representation 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 and FIG Section through a pump chamber cover belonging to the delivery unit according to FIG. 2, along the line III-III.
  • Beschreibung des AusführungsbeispielsDescription of the embodiment
  • Figur 1 zeigt einen Kraftstoffvorratstank 10, in dem ein Kraftstofförderaggregat 12 angeordnet ist. An einem Druckstutzen 14 des Kraftstofförderaggregats 12 ist eine Druckleitung 16 angeschlossen, die zu einer Brennkraftmaschine 18 führt. Während des Betriebs der Brennkraftmaschine 18 saugt das Kraftstofförderaggregat 12 über einen Saugstutzen 13 Kraftstoff aus dem Vorratstank 10 und fördert den Kraftstoff zur Brennkraftmaschine 18. Das Kraftstofförderaggregat 12 ist mit einem elektrischen Antriebsmotor 20 ausgestattet (Figur 2), dessen Motoranker 22 auf einer Ankerwelle 24 sitzt. Die Ankerwelle 24 durchdringt mit ihrem einen Ende 26 eine Trennwand 28, welche einen Raum 30, in welchem sich der Elektromotor 20 befindet, von einer Förderpumpe 32 trennt. Die Förderpumpe 32 ist als Strömungspumpe ausgebildet. Ihr Flügelrad 34 ist drehfest mit dem Ende 26 der Ankerwelle 24 verbunden. Das Flügelrad 34 ist in einer Pumpenkammer 36 angeordnet, welche einerseits durch die Trennwand 28 zum Antriebsmotor 20 hin und andererseits durch einen Deckel 38 begrenzt ist, in welchem sich der Saugstutzen 13 befindet. Beim Ausführungsbeispiel ist die Förderpumpe als zweistufige Strömungspumpe ausgebildet. Dies ist jedoch im Hinblick auf die Erfindung bedeutungslos, weil die Erfindung auch ohne Schwierigkeiten bei einer einstufigen Strömungspumpe angewendet werden kann. In der Pumpenkammer 36 läuft das Flügelrad 34 um, welches einen inneren, ersten Kranz 40 von Flügeln aufweist. In seinem peripheralen Bereich hat das Flügelrad 34 einen zweiten Kranz 42 von Flügeln. Dabei besteht der zweite Kranz 42 aus zwei Teilkränzen, von denen jeder an einer der beiden Stirnflächen 44, 46 des im wesentlichen kreiszylinderförmigen Flügelrads 34 ausgebildet ist. Die beiden Teilflügelkränze des zweiten Flügelkranzes 42 sind in Figur 2 mit den Bezugszahlen 51 und 53 versehen worden. Die Trennwand 28 ist fest mit einem Gehäuseteil 54 verbunden, welches das Förderaggregat 12 umschließt. Auf der von der Trennwand 28 abgewandten Seite des Flügelrades 34 ist die Pumpenkammer 36 durch den Deckel 38 verschlossen. Dieser wird in seiner Aufnahme durch einen nach innen geformten Rand 56 des Gehäuseteils 54 gehalten. Wie Figur 3 zeigt, erstreckt sich ein erster, innerer Förderkanal 50 von einer im Saugstutzen 13 befindlichen Saugöffnung 58 aus im Gegenuhrzeigersinn bis zu einem Zwischenkanal 60, der sich im wesentlichen radial erstreckt. An den Zwischenkanal 60 schließt sich ein zweiter oder äußerer Förderkanal 52 an. Dieser erstreckt sich entlang einer Randschulter 62 des Deckels 38 bis nahe dem Zwischenkanal 60. Auch in der Trennwand 28 sind entsprechende Förderkanäle 50, 52 angeordnet. In radialer Richtung gesehen liegen die beiden Förderkanäle 50 und 52 mit Abstand voneinander, so daß zwischen diesen eine Trennfläche 64 verbleibt. Da in Achsrichtung gesehen die beiden Förderkanäle 50 und die beiden Förderkanäle 52 einander gegenüberliegen, liegen sich auch die Trennflächen 64 der Trennwand 28 und des Deckels 38 einander gegenüber. Im Bereich des Auslaufs 66 des Förderkanals 52 im Deckel 38 liegt diesem in der Trennwand 28 eine Drucköffnung 68 gegenüber, welche den Förderkanal 52 mit dem Raum 30 verbindet, der, wie Figur 1 zeigt, den Druckstutzen 14 aufweist. Weiter zeigt Figur 3, daß in der Trennfläche 64 des Deckels 38 drei Bohrungen 70 angeordnet sind, welche von der Pumpenkammer 36 aus zur Saugseite der Pumpe 32 führen. Diese Bohrungen 70 verbinden also die Pumpenkammer mit einem Bereich des Systems, in welchem Niederdruck herrscht. Dieser Bereich ist beim Ausführungsbeispiel der Tankinnenraum. Diese drei Entgasungsbohrungen 70 sind in Laufrichtung (Pfeil 72) des Laufrades 34 gesehen hintereinander in einer rinnenartigen Nut 74 angeordnet, die sich im wesentlichen zwischen den beiden Förderkanälen 50 und 52 in Drehrichtung Pfeil 72 erstreckt. Die beiden Förderkanäle 50 und 52 erstrecken sich also ausgehend von der Saugöffnung 58 zur Drucköffnung 68, wobei der Deckel 38 die Saugöffnung 58 und die Trennwand 28 die Drucköffnung 68 aufweisen. Die hydraulische Verbindung zwischen den einander in Achsrichtung gegenüberliegenden gleichartigen Förderkanälen geschieht einmal durch die zwischen den Flügeln des ersten Kranzes 40 vorhandenen Durchbrüche bzw. durch einen zwischen der Randschulter 62 und der äußeren Mantelfläche des Flügelrades 34 verbleibenden Ringspalt 76. Wenn man davon ausgeht, daß die Erfindung auch mit nur einer einzigen Bohrung 70 relaisierbar ist und diese einzige Bohrung durch die mittlere Bohrung in Figur 3 dargestellt ist, kann der Verlauf der rinnenartigen Nut 74 auch dadurch deutlich gemacht werden, daß sich ein Teil der Nut 74 in Umlaufrichtung (Pfeil 72) und ein anderer Teil der Nut 74 sich entgegen dieser Umlaufrichtung des Flügelrades 34 erstreckt. Die beiden die Pumpenkammer 36 in Achsrichtung des Laufrades 34 begrenzenden Wände 28 und 38 sind beim Ausführungsbeispiel aus Kunststoff hergestellt. Dabei ist die rinnenartige Nut 74 in den Deckel 38 eingeformt.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. During the operation of the internal combustion engine 18, 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. In the exemplary embodiment, 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 provided with 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. On the side of the impeller 34 facing away from the partition wall 28, 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. As FIG. 3 shows, 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 delivery channels 50, 52 are arranged in the partition wall 28. Seen in the radial direction, the two delivery channels 50 and 52 are spaced from one another, so that a separating surface 64 remains between them. As seen in the axial direction, the two delivery channels 50 and the two delivery channels 52 lie opposite one another, the separating surfaces 64 of the dividing wall 28 and of the cover 38 also lie opposite one another. In the area of the outlet 66 of the delivery channel 52 in the cover 38, there is a pressure opening 68 in the partition 28 opposite it, which connects the delivery channel 52 to the space 30, which, as shown in FIG. 1, has the pressure port 14. FIG. 3 also shows that three bores 70 are arranged in the separating surface 64 of the cover 38, which lead from the pump chamber 36 to the suction side of the pump 32. These bores 70 thus connect the pump chamber to an area of the system in which there is low pressure. In the exemplary embodiment, this area is 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 similar conveying channels opposite each other in the axial direction occurs once through the openings between the wings of the first ring 40 or through an annular gap 76 remaining between the edge shoulder 62 and the outer circumferential surface of the impeller 34. If one assumes that the Invention can also be relayed with only a single bore 70 and this single bore is represented by the central bore in FIG. 3, the course of the groove-like groove 74 can also be made clear by the fact that part of the groove 74 extends in the circumferential direction (arrow 72) and another part of the groove 74 extends against this direction of rotation of the impeller 34. The two the pump chamber 36 in the axial direction of the impeller 34 bounding walls 28 and 38 are made of plastic in the embodiment. The groove-like groove 74 is formed in the cover 38.
  • Im Betrieb arbeitet das erfindungsgemäße Förderaggregat wie folgt:In operation, the conveyor unit according to the invention works as follows:
  • Wenn das Flügelrad 34 durch den Elektromotor 20 angetrieben wird, saugt die Förderpumpe 32 über die Saugöffnung 58 Kraftstoff aus dem Vorratstank 10 an und drückt diesen in Richtung des Pfeiles 72 durch den ersten Förderkanal 50 und den Zwischenkanal 60 in den äußeren Förderkanal 52, von wo aus der Kraftstoff über die Drucköffnung 68 in den Raum 30 des Antriebsmotors 20 eintritt und diesen über den Druckstutzen 14 verläßt. Zwischen den beiden Stirnflächen des Flügelrades 34 und den diesen zugewandten Wänden 38, 28 sind geringfügige Radialspalte vorhanden, über die im Förderkanal 50, 60, 52 vorhandene Gasblasen in Richtung der Pfeile 78 aus den Förderkanälen gedrückt und von der rinnenartigen Nut 74 aufgenommen werden. Von dort aus verlassen die Gasblasen die Pumpenkammer 36 über die Bohrungen 70. Die angesprochenen Gasblasen treten beispielsweise durch Kavitation auf, welche in bestimmten Bereichen der Förderpumpe stattfindet. Auch können solche Gasblasen dadurch vorhanden sein, daß die Pumpe völlig entleert gewesen ist und die Förderpumpe zunächst nun diese Luft fördert. In allen Fällen soll vermieden werden, daß die Gasblasen in dem System verbleiben, über die Druckleitung 16 zur Brennkraftmaschine 18 gelangen und deren Betrieb stören.When the impeller 34 is driven by the electric motor 20, 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 delivery channel 50 and the intermediate channel 60 into the outer delivery 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. There are slight radial gaps between the two end faces of the impeller 34 and the walls 38, 28 facing them, via which gas bubbles present in the delivery channel 50, 60, 52 are pressed out of the delivery channels in the direction of the arrows 78 and received by the channel-like groove 74. From there, the gas bubbles leave the pump chamber 36 via the bores 70. The 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.

Claims (7)

  1. Unit for delivering fuel from the storage tank (10) to the internal combustion engine (18) of a motor vehicle, having a delivery pump (32) which is arranged in the storage tank, is configured as a flow pump and whose essentially circular-cylindrical, rotationally driven vane wheel (34) is arranged in a correspondingly circular-cylindrical pump chamber (36) and, in at least one of the two chamber end walls (28 and 38), at least one approximately annular, in cross-section groove-type delivery passage (50, 60, 52) extends from a suction opening (58), which opens into the pump chamber, to a pressure opening leading out of this pump chamber and this chamber end wall is penetrated, in the region of the pressure opening, by a hole (70) which connects the pump chamber (36) to a region of the system in which low pressure is present, the hole (70) being located in a sealing surface (64) which bounds the delivery passage (50, 60, 52) in the radial direction referred to the axis of rotation of the vane wheel (34), characterized in that a gutter-type passage (74) is arranged in the sealing surface (64) and, starting from the hole (70), extends partially in the rotational direction (arrow 72) and partially against the rotational direction of the vane wheel (34).
  2. Unit according to Claim 1, characterized in that further holes (70) are arranged in the gutter-type passage (74).
  3. Unit according to one of Claims 1 or 2, in which the vane wheel has a first and a second ring of vanes, of which the second ring has a larger radius than the vane ring and two delivery passages associated with the respective vane ring are located in the chamber end wall, of which two delivery passages the inner delivery passage is connected via an intermediate passage to the outer delivery passage and the suction opening is arranged on the inner delivery passage and the pressure opening is arranged on the outer delivery passage, characterized in that the hole (70) is located in a region of the sealing surface (64) which extends at least essentially between the two delivery passages (50, 52).
  4. Unit according to Claim 3, characterized in that the gutter-type passage (74) extends in the radial direction between the two delivery passages (50, 52) as far as the region of the intermediate passage (60).
  5. Unit according to one of Claims 1 to 4, characterized in that the chamber wall is formed on a cover (38) which bounds the pump chamber (36) at one end and is manufactured from plastic, preferably injected.
  6. Unit according to Claim 5, characterized in that the gutter-type passage (74) is formed in the end wall of the cover (38).
  7. Unit according to one of Claims 1 to 6, characterized in that the hole (70) connects a region of higher pressure in the pump chamber (36) with the space enclosed by the storage tank (10).
EP91909637A 1990-06-28 1991-05-27 Assembly for feeding fuel from the fuel tank of a motor vehicle to its internal combustion engine Expired - Lifetime EP0536159B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE4020520A DE4020520A1 (en) 1990-06-28 1990-06-28 AGGREGATE FOR PROCESSING FUEL FROM THE STORAGE TANK TO THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
DE4020520 1990-06-28
PCT/DE1991/000449 WO1992000449A1 (en) 1990-06-28 1991-05-27 Assembly for feeding fuel from the fuel tank of a motor vehicle to its internal combustion engine

Publications (2)

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

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EP91909637A Expired - Lifetime EP0536159B1 (en) 1990-06-28 1991-05-27 Assembly for feeding fuel from the fuel tank of a motor vehicle to its internal combustion engine

Country Status (5)

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

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960001631B1 (en) * 1991-05-14 1996-02-03 미쓰비시덴키가부시키가이샤 Circumferential flow type liquid pump
DE4322370C2 (en) * 1992-07-08 1998-10-29 Mannesmann Vdo Ag Liquid pump
GB9220991D0 (en) * 1992-10-06 1992-11-18 Dowty Defence Lubrication system
DE4240592A1 (en) * 1992-12-03 1994-06-09 Bosch Gmbh Robert Fuel supply unit from storage tank to IC engine - has opening to relief chamber close to suction side wall and has same radial extension as suction opening
DE4240593A1 (en) * 1992-12-03 1994-06-09 Bosch Gmbh Robert Unit supplying fuel via fuel pump to IC engine - has relief channel located close to end of suction opening and extends radially of delivery element
DE4318122C2 (en) * 1993-06-01 2002-01-17 Bosch Gmbh Robert Unit for delivering fuel from a storage tank to the internal combustion engine of a motor vehicle
US5413457A (en) * 1994-07-14 1995-05-09 Walbro Corporation Two stage lateral channel-regenerative turbine pump with vapor release
DE4428254A1 (en) * 1994-08-10 1996-02-15 Bosch Gmbh Robert Fuel pump with chambered wheel and feed and degassing channels
ES2179152T3 (en) * 1995-03-31 2003-01-16 Bitron Spa PERIPHERAL FUEL PUMP FOR AUTOMOBILE VEHICLES.
JP3388946B2 (en) * 1995-06-23 2003-03-24 愛三工業株式会社 Fuel pump device
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
US5718208A (en) * 1996-09-16 1998-02-17 Ford Motor Company Fuel vapor management system
US6382172B1 (en) * 1997-03-21 2002-05-07 Mitsubishi Heavy Industries, Ltd. Fuel tank and general purpose engine equipped with the same
US6116851A (en) * 1997-07-16 2000-09-12 Fluid Equipment Development Company, Llc Channel-type pump
DE19748448C2 (en) * 1997-11-03 1999-12-09 Mannesmann Vdo Ag Peripheral pump
CN100373057C (en) * 1998-04-14 2008-03-05 三菱电机株式会社 Cycular-flowing type fluid pump
US6227819B1 (en) 1999-03-29 2001-05-08 Walbro Corporation Fuel pumping assembly
US6231318B1 (en) 1999-03-29 2001-05-15 Walbro Corporation In-take fuel pump reservoir
WO2002044407A2 (en) 2000-11-30 2002-06-06 Ses Europe N.V. Glyphosate resistant transgenic sugar beet characterised by a specific transgene insertion (t227-1), methods and primers for the detection of said insertion
US6527505B2 (en) * 2000-12-11 2003-03-04 Visteon Global Technologies, Inc. Regenerative fuel pump flow chamber
US6547515B2 (en) * 2001-01-09 2003-04-15 Walbro Corporation Fuel pump with vapor vent
DE10200579B4 (en) * 2002-01-09 2013-06-06 Hilge Gmbh & Co. Kg Self-priming centrifugal pump
JP2004293526A (en) * 2003-03-28 2004-10-21 Denso Corp Fuel pump
DE10341840B4 (en) * 2003-09-09 2006-12-28 Siemens Ag Fuel delivery unit
US7632060B2 (en) * 2005-01-24 2009-12-15 Ford Global Technologies, Llc Fuel pump having dual flow channel
JP4753659B2 (en) * 2005-08-11 2011-08-24 三菱電機株式会社 Fuel pump
JP2007056812A (en) * 2005-08-25 2007-03-08 Matsushita Electric Works Ltd Pump and liquid supply device equipped with same
US8016545B2 (en) 2006-06-14 2011-09-13 Fluid Equipment Development Company, Llc Thrust balancing in a centrifugal pump
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
US20080105617A1 (en) * 2006-06-14 2008-05-08 Eli Oklejas Two pass reverse osmosis system
US8529761B2 (en) 2007-02-13 2013-09-10 Fluid Equipment Development Company, Llc Central pumping and energy recovery in a reverse osmosis system
US8147692B2 (en) * 2008-01-04 2012-04-03 Fluid Equipment Development Company, Llc Batch-operated reverse osmosis system with multiple membranes in a pressure vessel
US7892429B2 (en) 2008-01-28 2011-02-22 Fluid Equipment Development Company, Llc Batch-operated reverse osmosis system with manual energization
US7559315B1 (en) 2008-02-11 2009-07-14 Ford Global Technologies, Llc Regenerative fuel pump
US8710406B2 (en) * 2008-09-19 2014-04-29 Conair Corporation Safety device and method for electric heating appliances
US8529191B2 (en) * 2009-02-06 2013-09-10 Fluid Equipment Development Company, Llc Method and apparatus for lubricating a thrust bearing for a rotating machine using pumpage
EP2441918A1 (en) * 2010-10-18 2012-04-18 Siemens Aktiengesellschaft Gas turbine annular diffuser
SG11201406705PA (en) 2012-04-20 2014-11-27 Fluid Equipment Dev Co Llc Reverse osmosis system with energy recovery devices
US9975089B2 (en) 2016-10-17 2018-05-22 Fluid Equipment Development Company, Llc Method and system for performing a batch reverse osmosis process using a tank with a movable partition
US10801512B2 (en) 2017-05-23 2020-10-13 Vector Technologies Llc Thrust bearing system and method for operating the same

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2369440A (en) * 1943-06-12 1945-02-13 Curtis Pump Co Self-lubricated and cooled pump and motor assembly
US3128710A (en) * 1960-09-19 1964-04-14 Oscar C Blomgren Gear pump
DE3118534A1 (en) * 1981-05-09 1983-02-24 Bosch Gmbh Robert PUMP FOR PROCESSING FUEL FROM A STORAGE TANK TO AN INTERNAL COMBUSTION ENGINE
US4508492A (en) * 1981-12-11 1985-04-02 Nippondenso Co., Ltd. Motor driven fuel pump
DE3303352A1 (en) * 1983-02-02 1984-08-02 Bosch Gmbh Robert AGGREGATE FOR PROMOTING FUEL, PREFERABLY FROM A STORAGE TANK FOR THE INTERNAL COMBUSTION ENGINE, ESPECIALLY A MOTOR VEHICLE
JPH0361038B2 (en) * 1983-10-05 1991-09-18 Nippon Denso Co
US4692092A (en) * 1983-11-25 1987-09-08 Nippondenso Co., Ltd. Fuel pump apparatus for internal combustion engine
JPS61175297A (en) * 1985-01-31 1986-08-06 Automob Antipollut & Saf Res Center Motor fuel pump for vehicle
DE3509374A1 (en) * 1985-03-15 1986-09-25 Bosch Gmbh Robert DEVICE FOR PROMOTING FUEL FROM A STORAGE TANK TO THE INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE
US4784587A (en) * 1985-06-06 1988-11-15 Nippondenso Co., Ltd. Pump apparatus
JPH0472078B2 (en) * 1987-03-12 1992-11-17 Honda Motor Co Ltd
JPS63263293A (en) * 1987-04-17 1988-10-31 Mitsubishi Electric Corp In-tank type fuel pump
US4854830A (en) * 1987-05-01 1989-08-08 Aisan Kogyo Kabushiki Kaisha Motor-driven fuel pump
US5024578A (en) * 1989-10-10 1991-06-18 General Motors Corporation Regenerative pump with two-stage stripper
US5192184A (en) * 1990-06-22 1993-03-09 Mitsuba Electric Manufacturing Co., Ltd. Fuel feed pump

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DE59102760D1 (en) 1994-10-06
JP3027186B2 (en) 2000-03-27
WO1992000449A1 (en) 1992-01-09
DE4020520A1 (en) 1992-01-02
JPH05508459A (en) 1993-11-25
US5338151A (en) 1994-08-16
EP0536159A1 (en) 1993-04-14

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