EP1664539B1 - Inner gear-wheel pump comprising reinforced channels - Google Patents

Inner gear-wheel pump comprising reinforced channels Download PDF

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Publication number
EP1664539B1
EP1664539B1 EP04766379A EP04766379A EP1664539B1 EP 1664539 B1 EP1664539 B1 EP 1664539B1 EP 04766379 A EP04766379 A EP 04766379A EP 04766379 A EP04766379 A EP 04766379A EP 1664539 B1 EP1664539 B1 EP 1664539B1
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EP
European Patent Office
Prior art keywords
housing
fuel pump
housing parts
fuel
rib
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 - Fee Related
Application number
EP04766379A
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German (de)
French (fr)
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EP1664539A1 (en
Inventor
Holger Barth
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.)
Continental Automotive GmbH
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Continental Automotive GmbH
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Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP1664539A1 publication Critical patent/EP1664539A1/en
Application granted granted Critical
Publication of EP1664539B1 publication Critical patent/EP1664539B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a working according to the gerotor principle fuel pump for delivering fuel from a fuel tank of a motor vehicle with a housing, with a mounted between two housing parts pair of runners, arranged in the housing and elongated designed channels of an inlet and an outlet.
  • Such fuel pumps are often used in particular for the promotion of diesel fuel in today's motor vehicles and are from the US-A-5,219,277 known.
  • the pair of rotors of the fuel pump operating on the gerotor principle has an internal rotor with an external toothing and an external rotor with an internal toothing.
  • the external teeth have one more tooth than the internal teeth.
  • the fulcrum of the inner rotor is offset from the fulcrum of the outer rotor.
  • the channels of the inlet and the outlet are arranged in opposite housing parts. Thus, the fuel pump is flowed through axially.
  • micropump From the EP-A-0 769 621 a micropump has become known for dosing applications. This micropump can be manufactured from almost any materials.
  • a disadvantage of the known fuel pump is that the elongated channels of the inlet and the outlet affect the stability of the housing. Helps in practice one is thus to arrange a stiffening ring made of steel for radial fixation and two ceramic plates or metal plates as the axial boundary of the pair of rotors in the housing parts. As a result, the known fuel pump designed very expensive.
  • the invention is based on the problem, a fuel pump of the type mentioned in such a way that it is particularly simple in design and inexpensive to manufacture.
  • At least one of the channels has at least one rib for stiffening the housing and that at least one of the housing parts is made of plastic and that the housing parts are screwed together, wherein one of the plastic housing parts housings for nuts made of metal Has.
  • the housing in the region of the channel has a particularly high stability.
  • the high stability is of great advantage, in particular at the outlet, since here high forces act perpendicularly on the region of the housing which has the channel of the outlet. A caused by the forces occurring bending of the housing in the region of the channels can be avoided thereby.
  • the housing can be made of a very thin-walled and inexpensive material.
  • the fuel pump according to the invention thus requires no separately mounted stiffening ring, is therefore particularly simple and can also be manufacture particularly inexpensively.
  • the fuel pump according to the invention can be manufactured particularly cost-effectively, because at least one of the housing parts is made of plastic.
  • the low strength compared to the ceramic plates of the known fuel pump made of plastic housing parts is compensated by the ribs in the channels.
  • a compound of the housing parts requires a particularly low design complexity, because the housing parts are screwed together, wherein one of the plastic housing parts has housings for nuts made of metal. The metal nuts ensure sufficient stability of the fuel pump according to the invention.
  • ribs could cover the channels like a grid.
  • the number of ribs can be kept particularly low according to another advantageous embodiment of the invention, when the at least one rib is arranged transversely to the longest extent of the cross section of the channel and mutually opposite, the channel bounding edges of the housing together. Furthermore, thereby the dimensions and thus a throttling effect of the ribs are kept particularly low.
  • the rib is made in one piece with the areas of the housing adjacent to the channels.
  • FIG. 1 shows a sectional view through a conveyor unit for conveying diesel fuel from a fuel tank of a motor vehicle, not shown, to an internal combustion engine with a driven by an electric motor 1 fuel pump 2.
  • the fuel pump 2 has a shaft 3 of the electric motor 1 connected to internal rotor 4, which is equipped with an external rotor 5 forms a pair of runners 6.
  • the external rotor 5 is radially in a ring member 7 and axially mounted between two housing parts 8, 9 of a housing 10.
  • a clutch 11 is arranged, which is rotatably connected to the inner rotor 4.
  • the shaft 3 has a radial bearing with a bush 12 in which the electric motor 1 facing away from the housing part 8 of the fuel pump 2.
  • a pump cover 13 has an intake 14 on.
  • the delivery unit has on its fuel pump 2 remote from the end of a connecting piece 15 for leading to the engine fuel line.
  • the conveyor unit is flowed through axially with the pumped fuel.
  • FIG. 2 shows in an exploded view of the fuel pump 2 from FIG. 1 in that the housing parts 8, 9 each have an elongate channel 16, 17.
  • the in the arrangement close to the electric motor 1 from FIG. 1 provided housing part 9 arranged channel 17 serves as an outlet of the fuel pump 2, while in the arrangement close to the pump cover 13 from FIG. 1 provided housing part 8 arranged channel 16 forms an inlet of the fuel pump 2.
  • the housing parts 8, 9 each have ribs 18, 19, which are arranged transversely to the longest extent of the channels 16, 17.
  • the ribs 18, 19 connect opposite, the respective channel 16, 17 limiting edges of the respective housing part 8, 9.
  • These ribs 18, 19 provide a stability provided in the region of the channels 16, 17, so that the housing parts 8, 9 from Plastic can be made.
  • FIG. 2 shows FIG. 2 in that the housing parts 8, 9 are connected to one another by means of screws 20.
  • the screws 20 are screwed with arranged in one of the housing parts 8 nuts 21 made of steel.
  • the housing part 8 has receptacles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Die Erfindung betrifft eine nach dem Gerotorprinzip arbeitende Kraftstoffpumpe zur Förderung von Kraftstoff aus einem Kraftstoffbehälter eines Kraftfahrzeuges mit einem Gehäuse, mit einem zwischen zwei Gehäuseteilen gelagerten Läuferpaar, mit in dem Gehäuse angeordneten und lang gestreckt gestalteten Kanälen eines Einlasses und eines Auslasses.The invention relates to a working according to the gerotor principle fuel pump for delivering fuel from a fuel tank of a motor vehicle with a housing, with a mounted between two housing parts pair of runners, arranged in the housing and elongated designed channels of an inlet and an outlet.

Solche Kraftstoffpumpen werden insbesondere zur Förderung von Diesel-Kraftstoff in heutigen Kraftfahrzeugen häufig eingesetzt und sind aus der US-A-5,219,277 bekannt. Das Läuferpaar der nach dem Gerotorprinzip arbeitenden Kraftstoffpumpe weist einen Innenläufer mit einer Außenverzahnung und einen Außenläufer mit einer Innenverzahnung auf. Die Außenverzahnung hat dabei einen Zahn mehr als die Innenverzahnung. Der Drehpunkt des Innenläufers ist versetzt zu dem Drehpunkt des Außenläufers. Die Kanäle des Einlasses und des Auslasses sind in gegenüberliegenden Gehäuseteilen angeordnet. Damit wird die Kraftstoffpumpe axial durchströmt.Such fuel pumps are often used in particular for the promotion of diesel fuel in today's motor vehicles and are from the US-A-5,219,277 known. The pair of rotors of the fuel pump operating on the gerotor principle has an internal rotor with an external toothing and an external rotor with an internal toothing. The external teeth have one more tooth than the internal teeth. The fulcrum of the inner rotor is offset from the fulcrum of the outer rotor. The channels of the inlet and the outlet are arranged in opposite housing parts. Thus, the fuel pump is flowed through axially.

Aus der EP-A-0 769 621 ist eine Mikropumpe für Dosieranwendungen bekannt geworden. Diese Mikropumpe lässt sich aus nahezu beliebigen Materialien fertigen.From the EP-A-0 769 621 a micropump has become known for dosing applications. This micropump can be manufactured from almost any materials.

Nachteilig bei der bekannten Kraftstoffpumpe ist, dass die lang gestreckten Kanäle des Einlasses und des Auslasses die Stabilität des Gehäuses beeinträchtigen. In der Praxis behilft man sich damit, einen Versteifungsring aus Stahl zur radialen Fixierung und zwei Keramikplatten oder Metallplatten als axiale Begrenzung des Läuferpaares in den Gehäuseteilen anzuordnen. Hierdurch gestaltet sich die bekannte Kraftstoffpumpe sehr kostenintensiv.A disadvantage of the known fuel pump is that the elongated channels of the inlet and the outlet affect the stability of the housing. Helps in practice one is thus to arrange a stiffening ring made of steel for radial fixation and two ceramic plates or metal plates as the axial boundary of the pair of rotors in the housing parts. As a result, the known fuel pump designed very expensive.

Der Erfindung liegt das Problem zugrunde, eine Kraftstoffpumpe der eingangs genannten Art so weiterzubilden, dass sie besonders einfach aufgebaut und kostengünstig zu fertigen ist.The invention is based on the problem, a fuel pump of the type mentioned in such a way that it is particularly simple in design and inexpensive to manufacture.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass zumindest einer der Kanäle zumindest eine Rippe zur Versteifung des Gehäuses hat und dass zumindest eines der Gehäuseteile aus Kunststoff gefertigt ist und dass die Gehäuseteile miteinander verschraubt sind, wobei eines der aus Kunststoff gefertigten Gehäuseteile Aufnahmen für Muttern aus Metall hat.This problem is inventively solved in that at least one of the channels has at least one rib for stiffening the housing and that at least one of the housing parts is made of plastic and that the housing parts are screwed together, wherein one of the plastic housing parts housings for nuts made of metal Has.

Durch diese Gestaltung vermag die Rippe den Kanal zu versteifen und damit ein Durchbiegen des Gehäuses im Bereich des Kanals zu vermeiden. Hierdurch hat das Gehäuse im Bereich des Kanals eine besonders hohe Stabilität. Die hohe Stabilität ist insbesondere am Auslass von großem Vorteil, da hier hohe Kräfte senkrecht auf den den Kanal des Auslasses aufweisenden Bereich des Gehäuses wirken. Ein von den auftretenden Kräften hervorgerufenes Durchbiegen des Gehäuses im Bereich der Kanäle lässt sich hierdurch vermeiden. Damit lässt sich das Gehäuse aus einem sehr dünnwandigen und kostengünstigen Material fertigen. Die erfindungsgemäße Kraftstoffpumpe benötigt hierdurch keinen separat zu montierenden Versteifungsring, ist daher besonders einfach aufgebaut und lässt sich zudem besonders kostengünstig fertigen. Die erfindungsgemäße Kraftstoffpumpe lässt sich besonders kostengünstig fertigen, weil zumindest eines der Gehäuseteile aus Kunststoff gefertigt ist. Die im Vergleich zu den Keramikplatten der bekannten Kraftstoffpumpe geringe Festigkeit der aus Kunststoff gefertigten Gehäuseteile wird durch die Rippen in den Kanälen ausgeglichen. Eine Verbindung der Gehäuseteile erfordert einen besonders geringen konstruktiven Aufwand, weil die Gehäuseteile miteinander verschraubt sind, wobei eines der aus Kunststoff gefertigten Gehäuseteile Aufnahmen für Muttern aus Metall hat. Die Muttern aus Metall stellen eine ausreichende Stabilität der erfindungsgemäßen Kraftstoffpumpe sicher.This design allows the rib to stiffen the channel and thus avoid bending of the housing in the region of the channel. As a result, the housing in the region of the channel has a particularly high stability. The high stability is of great advantage, in particular at the outlet, since here high forces act perpendicularly on the region of the housing which has the channel of the outlet. A caused by the forces occurring bending of the housing in the region of the channels can be avoided thereby. Thus, the housing can be made of a very thin-walled and inexpensive material. The fuel pump according to the invention thus requires no separately mounted stiffening ring, is therefore particularly simple and can also be manufacture particularly inexpensively. The fuel pump according to the invention can be manufactured particularly cost-effectively, because at least one of the housing parts is made of plastic. The low strength compared to the ceramic plates of the known fuel pump made of plastic housing parts is compensated by the ribs in the channels. A compound of the housing parts requires a particularly low design complexity, because the housing parts are screwed together, wherein one of the plastic housing parts has housings for nuts made of metal. The metal nuts ensure sufficient stability of the fuel pump according to the invention.

Es könnten beispielsweise mehrere Rippen die Kanäle gitterartig überdecken. Die Anzahl der Rippen lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn die zumindest eine Rippe quer zur längsten Erstreckung des Querschnitts des Kanals angeordnet ist und einander gegenüberliegende, den Kanal begrenzende Ränder des Gehäuses miteinander verbindet. Weiterhin werden hierdurch die Abmessungen und damit eine Drosselwirkung der Rippen besonders gering gehalten.For example, several ribs could cover the channels like a grid. The number of ribs can be kept particularly low according to another advantageous embodiment of the invention, when the at least one rib is arranged transversely to the longest extent of the cross section of the channel and mutually opposite, the channel bounding edges of the housing together. Furthermore, thereby the dimensions and thus a throttling effect of the ribs are kept particularly low.

Zur weiteren Verringerung des Montageaufwandes der erfindungsgemäßen Kraftstoffpumpe trägt es bei, wenn die Rippe einstückig mit den an die Kanäle angrenzenden Bereichen des Gehäuses gefertigt ist.To further reduce the assembly cost of the fuel pump according to the invention, it is beneficial if the rib is made in one piece with the areas of the housing adjacent to the channels.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt in

Figur 1
eine Schnittdarstellung durch eine Fördereinheit mit einer erfindungsgemäßen Kraftstoffpumpe,
Figur 2
eine Explosionsdarstellung der erfindungsgemäßen Kraftstoffpumpe aus Figur 1.
The invention allows numerous embodiments. To further clarify its basic principle, one of them is in the drawing and will be described below. This shows in
FIG. 1
a sectional view through a conveyor unit with a fuel pump according to the invention,
FIG. 2
an exploded view of the fuel pump according to the invention FIG. 1 ,

Figur 1 zeigt eine Schnittdarstellung durch eine Fördereinheit zum Fördern von Dieselkraftstoff aus einem nicht dargestellten Kraftstoffbehälter eines Kraftfahrzeuges zu einer Brennkraftmaschine mit einer von einem Elektromotor 1 angetriebenen Kraftstoffpumpe 2. Die Kraftstoffpumpe 2 hat einen mit einer Welle 3 des Elektromotors 1 verbundenen Innenläufer 4, der mit einem Außenläufer 5 ein Läuferpaar 6 bildet. Der Außenläufer 5 ist radial in einem Ringelement 7 und axial zwischen zwei Gehäuseteilen 8, 9 eines Gehäuses 10 gelagert. Auf der Welle 3 des Elektromotors 1 ist eine Kupplung 11 angeordnet, welche drehfest mit dem Innenläufer 4 verbunden ist. Weiterhin hat die Welle 3 ein Radiallager mit einer Buchse 12 in dem dem Elektromotor 1 abgewandten Gehäuseteil 8 der Kraftstoffpumpe 2. Ein Pumpendeckel 13 weist einen Ansaugstutzen 14 auf. Die Fördereinheit hat auf seinem der Kraftstoffpumpe 2 abgewandten Ende einen Anschlussstutzen 15 für eine zu der Brennkraftmaschine führende Kraftstoffleitung. Damit wird die Fördereinheit axial mit dem geförderten Kraftstoff durchströmt. FIG. 1 shows a sectional view through a conveyor unit for conveying diesel fuel from a fuel tank of a motor vehicle, not shown, to an internal combustion engine with a driven by an electric motor 1 fuel pump 2. The fuel pump 2 has a shaft 3 of the electric motor 1 connected to internal rotor 4, which is equipped with an external rotor 5 forms a pair of runners 6. The external rotor 5 is radially in a ring member 7 and axially mounted between two housing parts 8, 9 of a housing 10. On the shaft 3 of the electric motor 1, a clutch 11 is arranged, which is rotatably connected to the inner rotor 4. Furthermore, the shaft 3 has a radial bearing with a bush 12 in which the electric motor 1 facing away from the housing part 8 of the fuel pump 2. A pump cover 13 has an intake 14 on. The delivery unit has on its fuel pump 2 remote from the end of a connecting piece 15 for leading to the engine fuel line. Thus, the conveyor unit is flowed through axially with the pumped fuel.

Figur 2 zeigt in einer Explosionsdarstellung der Kraftstoffpumpe 2 aus Figur 1, dass die Gehäuseteile 8, 9 jeweils einen langgestreckten Kanal 16, 17 aufweisen. Der in dem zur Anordnung nahe des Elektromotors 1 aus Figur 1 vorgesehene Gehäuseteil 9 angeordnete Kanal 17 dient als Auslass der Kraftstoffpumpe 2, während der in dem zur Anordnung nahe des Pumpendeckels 13 aus Figur 1 vorgesehene Gehäuseteil 8 angeordnete Kanal 16 einen Einlass der Kraftstoffpumpe 2 bildet. Die Gehäuseteile 8, 9 weisen jeweils Rippen 18, 19 auf, welche quer zur längsten Erstreckung der Kanäle 16, 17 angeordnet sind. Die Rippen 18, 19 verbinden einander gegenüberliegende, den jeweiligen Kanal 16, 17 begrenzende Ränder des jeweiligen Gehäuseteils 8, 9. Diese Rippen 18, 19 sorgen für eine vorgesehene Stabilität im Bereich der Kanäle 16, 17, so dass die Gehäuseteile 8, 9 aus Kunststoff gefertigt werden können. Weiterhin zeigt Figur 2, dass die Gehäuseteile 8, 9 mittels Schrauben 20 miteinander verbunden sind. Die Schrauben 20 werden mit in einem der Gehäuseteile 8 angeordneten Muttern 21 aus Stahl eingedreht. Das Gehäuseteil 8 hat für die Muttern 21 als Vertiefungen ausgebildete Aufnahmen 22. FIG. 2 shows in an exploded view of the fuel pump 2 from FIG. 1 in that the housing parts 8, 9 each have an elongate channel 16, 17. The in the arrangement close to the electric motor 1 from FIG. 1 provided housing part 9 arranged channel 17 serves as an outlet of the fuel pump 2, while in the arrangement close to the pump cover 13 from FIG. 1 provided housing part 8 arranged channel 16 forms an inlet of the fuel pump 2. The housing parts 8, 9 each have ribs 18, 19, which are arranged transversely to the longest extent of the channels 16, 17. The ribs 18, 19 connect opposite, the respective channel 16, 17 limiting edges of the respective housing part 8, 9. These ribs 18, 19 provide a stability provided in the region of the channels 16, 17, so that the housing parts 8, 9 from Plastic can be made. Further shows FIG. 2 in that the housing parts 8, 9 are connected to one another by means of screws 20. The screws 20 are screwed with arranged in one of the housing parts 8 nuts 21 made of steel. The housing part 8 has receptacles 22 designed as depressions for the nuts 21.

Claims (3)

  1. A gerotor fuel pump for feeding fuel from a fuel tank of a motor vehicle having a housing, having a rotor pair mounted between two housing parts, and having elongated inlet and outlet ducts arranged in the housing,
    characterized in that at least one of the ducts (16, 17) has at least one rib (18, 19) for strengthening the housing (10) and in that at least one of the housing parts (8,9) is produced from plastic and in that the housing parts (8,9) are screwed to one another, with one of the plastic housing parts (8) having receptacles (22) for metal nuts (21).
  2. Fuel pump according to claim 1, characterized in that the at least one rib (18, 19) is arranged transversely with respect to the longest extent of the duct (16, 17) cross section, and connects opposing edges of the housing (10), which delimit the duct (16, 17), to one another.
  3. Fuel pump according to claim 1 or 2, characterized in that the rib (18, 19) is produced in one piece with those regions of the housing (10) which adjoin the ducts (16, 17).
EP04766379A 2003-09-09 2004-07-30 Inner gear-wheel pump comprising reinforced channels Expired - Fee Related EP1664539B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10341841A DE10341841A1 (en) 2003-09-09 2003-09-09 According to the gerotor principle working fuel pump
PCT/EP2004/051671 WO2005026552A1 (en) 2003-09-09 2004-07-30 Inner gear-wheel pump comprising reinforced channels

Publications (2)

Publication Number Publication Date
EP1664539A1 EP1664539A1 (en) 2006-06-07
EP1664539B1 true EP1664539B1 (en) 2008-06-11

Family

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EP04766379A Expired - Fee Related EP1664539B1 (en) 2003-09-09 2004-07-30 Inner gear-wheel pump comprising reinforced channels

Country Status (8)

Country Link
US (1) US20060153706A1 (en)
EP (1) EP1664539B1 (en)
JP (1) JP2007504398A (en)
KR (1) KR20060113652A (en)
CN (1) CN100564878C (en)
DE (2) DE10341841A1 (en)
ES (1) ES2308231T3 (en)
WO (1) WO2005026552A1 (en)

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Also Published As

Publication number Publication date
DE502004007363D1 (en) 2008-07-24
EP1664539A1 (en) 2006-06-07
WO2005026552A1 (en) 2005-03-24
DE10341841A1 (en) 2005-04-07
CN1836107A (en) 2006-09-20
KR20060113652A (en) 2006-11-02
JP2007504398A (en) 2007-03-01
CN100564878C (en) 2009-12-02
ES2308231T3 (en) 2008-12-01
US20060153706A1 (en) 2006-07-13

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