WO2005026552A1 - Inner gear-wheel pump comprising reinforced channels - Google Patents

Inner gear-wheel pump comprising reinforced channels Download PDF

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Publication number
WO2005026552A1
WO2005026552A1 PCT/EP2004/051671 EP2004051671W WO2005026552A1 WO 2005026552 A1 WO2005026552 A1 WO 2005026552A1 EP 2004051671 W EP2004051671 W EP 2004051671W WO 2005026552 A1 WO2005026552 A1 WO 2005026552A1
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WO
WIPO (PCT)
Prior art keywords
housing
fuel pump
channels
housing parts
fuel
Prior art date
Application number
PCT/EP2004/051671
Other languages
German (de)
French (fr)
Inventor
Holger Barth
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to US10/571,217 priority Critical patent/US20060153706A1/en
Priority to DE502004007363T priority patent/DE502004007363D1/en
Priority to EP04766379A priority patent/EP1664539B1/en
Priority to JP2006525804A priority patent/JP2007504398A/en
Publication of WO2005026552A1 publication Critical patent/WO2005026552A1/en

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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
    • 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
    • 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 on the gerotor principle fuel pump for delivering fuel from a Kraf fuel tank of a motor vehicle with a housing, with a pair of runners mounted between two housing parts, with arranged in the housing and elongated channels of an inlet and an outlet.
  • the pair of rotors of the fuel pump working according to the gerotor principle has an inner rotor with external teeth and an external rotor with internal teeth.
  • the external toothing usually has one more tooth than the internal toothing.
  • the fulcrum of the inner rotor is offset from the fulcrum of the outer race s.
  • the channels of the inlet and the outlet are usually arranged in opposite housing parts. This flows axially through the fuel pump.
  • a disadvantage of the known fuel umpe is that the elongate channels of the inlet and the outlet impair the stability of the housing. In practice, this helps to arrange a steel reinforcement ring for radial fixation and two ceramic plates or metal plates as an axial limitation of the pair of runners in the housing parts. As a result, the known fuel pump is very cost-intensive.
  • the invention is based on the problem of developing a fuel pump of the type mentioned at the outset in such a way that it is particularly simple, constructed and inexpensive to manufacture.
  • At least one of the channels has at least one rib for stiffening the housing.
  • the rib can stiffen the channel and thus prevent the housing from bending in the area of the channel.
  • the housing has a particularly high stability in the region of the channel.
  • the high stability is particularly advantageous at the outlet, since high forces act perpendicularly on the area of the walking housing that has the channel of the outlet. A bending of the housing in the region of the channels caused by the occurring forces can thereby be avoided.
  • This enables the housing to be made from a very thin-walled and inexpensive material.
  • the fuel pump according to the invention does not require a stiffening ring to be installed separately, is therefore of a particularly simple construction and can also be manufactured particularly cost-effectively.
  • the number of ribs can be kept particularly low if the at least one rib is arranged transversely to the longest extension of the cross section of the channel and connects mutually opposite edges of the housing which delimit the channel. Furthermore, the dimensions and thus a throttling effect of the ribs are kept particularly cering. It helps to further reduce the assembly effort of the fuel pump according to the invention if the rib is made in one piece with the regions of the housing adjoining the channels.
  • the fuel pump according to the invention can be manufactured particularly inexpensively if at least one of the housing parts is made of plastic.
  • the compared to the ceramic plates of the known Kra tstoffpumpe low strength of the plastic housing parts is compensated for by the ribs in the channels.
  • a connection of the housing parts requires a particularly low design effort if the housing parts are screwed together, one of the housing parts made of plastic having receptacles for nuts made of metal.
  • the nuts made of metal ensure sufficient stability of the fuel pump according to the invention.
  • FIG. 1 shows a sectional view through a delivery unit with a fuel according to the invention
  • FIG. 2 shows an exploded view of the fuel pump according to the invention from FIG. 1.
  • Figure 1 shows a sectional view through a conveyor unit for conveying diesel fuel from a fuel tank, not shown, of a motor vehicle to one Internal combustion engine with a fuel pump 2 driven by an electric motor 1.
  • the fuel umpe 2 has an inner rotor 4 connected to a shaft 3 of the electric motor 1, which forms an armature pair 6 with an outer rotor 5.
  • the external rotor 5 is mounted radially in a ring element 7 and axially between two housing parts 8, 9 of a housing 10.
  • a clutch 11 is arranged, which is non-rotatably connected to the inner rotor 4.
  • the shaft 3 has a radial bearing with a bushing 12 in the housing part 8 of the fuel pump 2 facing away from the electric motor 1.
  • a pump cover 13 has an intake port 14.
  • the delivery unit has, on its end facing away from the fuel pump 2, a connecting piece 15 for a fuel line leading to the internal combustion engine. The delivered fuel thus flows axially through the delivery unit.
  • FIG. 2 shows in an exploded view of the fuel pump 2 from FIG. 1 that the housing parts 8, 9 each have an elongated channel 16, 17.
  • the channel 17 arranged in the housing part 9 provided for arrangement near the electric motor 1 from FIG. 1 serves as the outlet of the fuel pump 2, while the channel 16 arranged in the housing part 8 provided for arrangement near the pump cover 13 from FIG. 1 serves as an inlet for the fuel pump 2 forms.
  • the housing parts 8, 9 each have ribs 18, 19 which are arranged transversely to the longest extension of the channels 16, 17.
  • the ribs 18, 19 connect mutually opposite edges of the respective housing part 8, 9 delimiting the respective channel 16, 17.
  • These ribs 18, 19 ensure the intended stability in the region of the channels 16, 17, so that the housing parts 8, 9 are made of Plastic can be made.
  • FIG. 2 further shows that the housing parts 8, 9 are connected to one another by means of screws 20.
  • the screws 20 are screwed in with nuts 21 made of steel arranged in one of the housing parts 8.
  • the housing part 8 has recesses 22

Landscapes

  • 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)

Abstract

The invention relates to a gerotor fuel pump (2) comprising ribs (18, 19), which are located in channels (16, 17) that are configured as inlets and outlets and that are situated in housing parts (8, 9). The ribs (18, 19) are positioned transversely to the maximal extension of the cross-sections of the channels (16, 17), producing a high degree of stability in said channels (16, 17). The housing parts (8, 9) are composed of plastic.

Description

Beschreibungdescription
INNENZAHNRADPUMPE MIT VERSTÄRKTEN ÖFFNUNGENINTERNAL GEAR PUMP WITH REINFORCED OPENINGS
Die Erfindung betrifft eine nach dem Gerotorprinzip arbeitende Kraftstoffpumpe zur Förderung von Kraftstoff aus einem Kraf stoffbehälter eines Kraftf hrzeuges mit einem Gehäuse, mit einem zwischen zwei Gehäuseteilen gelagerten Läuferpaar, mit in dem Gehäuse angeordneten und langgestreckt gestalteten Kanälen eines Einlasses und eines Auslasses.The invention relates to a working on the gerotor principle fuel pump for delivering fuel from a Kraf fuel tank of a motor vehicle with a housing, with a pair of runners mounted between two housing parts, with arranged in the housing and elongated channels of an inlet and an outlet.
Solche Kraftstoffpumpen werden insbesondere zur Förderung von Diesel-Kraf stoff in heutigen Kraftf hrzeugen häufig eingesetzt und sind aus der Praxis bekannt. Das Läuferpaar der nach dem Gerotorprinzip arbeitenden Kraftstof pumpe weist einen Innenläufer mit einer Außenverzahnung und einen Außenläufer mit einer Innenverzahnung auf . Die Außenverzahnung hat dabei meist einen Zahn mehr als die Innenverzahnung. Der Drehpunkt des Innenläufers ist versetzt zu dem Drehpunkt des Außenläufe s. Die Kanäle des Einlasses und des Auslasses sind meist in gegenüberliegenden Gehäuseteilen angeordnet . Damit wird die Kraftstoffpumpe axial durchströmt .Such fuel pumps are often used in particular to promote diesel fuel in today's motor vehicles and are known from practice. The pair of rotors of the fuel pump working according to the gerotor principle has an inner rotor with external teeth and an external rotor with internal teeth. The external toothing usually has one more tooth than the internal toothing. The fulcrum of the inner rotor is offset from the fulcrum of the outer race s. The channels of the inlet and the outlet are usually arranged in opposite housing parts. This flows axially through the fuel pump.
Nachteilig bei der bekannten Kraftstoff umpe ist, dass die langgestreckten Kanäle des Einlasses und des Auslasses die Stabilität des Gehäuses beeinträchtigen. In der Praxis behilft man sich damit, einen Verstei ungsring aus Stahl zur radialen Fixierung und zwei Keramikplatten oder Metallplatten als axiale Begrenzung des Lauferpaares in den Gehäuseteilen anzuordnen. Hierdurch gestaltet sich die bekannte Kraftstoffpumpe sehr kostenintensiv. A disadvantage of the known fuel umpe is that the elongate channels of the inlet and the outlet impair the stability of the housing. In practice, this helps to arrange a steel reinforcement ring for radial fixation and two ceramic plates or metal plates as an axial limitation of the pair of runners in the housing parts. As a result, the known fuel pump is very cost-intensive.
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 of developing a fuel pump of the type mentioned at the outset in such a way that it is particularly simple, constructed and inexpensive to manufacture.
Dieses Problem wird erfindungsgemäß dadurch gelöst, dass zumindest einer cler Kanäle zumindest eine Rippe zur Versteifung des Gehäuses ha .This problem is solved according to the invention in that at least one of the channels has at least one rib for stiffening the housing.
Durch diese Gestaltung vermag die Rippe den Kanal zu verstei- fen und damit ein Durchbiegen des Gehäuses im Bereich des Kanals zu vermeicen. 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 Gehtäuses 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.With this design, the rib can stiffen the channel and thus prevent the housing from bending in the area of the channel. As a result, the housing has a particularly high stability in the region of the channel. The high stability is particularly advantageous at the outlet, since high forces act perpendicularly on the area of the walking housing that has the channel of the outlet. A bending of the housing in the region of the channels caused by the occurring forces can thereby be avoided. This enables the housing to be made from a very thin-walled and inexpensive material. As a result, the fuel pump according to the invention does not require a stiffening ring to be installed separately, is therefore of a particularly simple construction and can also be manufactured particularly cost-effectively.
Es könnten beispielsweise mehrere Rippen die Kanäle gitterar- tig überdecken. Die Anzahl der Rippen lässt sich gemäß einer anderen vorteilha ten Weiterbildung der Erfindung besonders gering halten, wenn die zumindest eine Rippe quer zur längsten Erstreckunj 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 cering gehalten. 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 is .For example, several ribs could cover the channels like a lattice. According to another advantageous development of the invention, the number of ribs can be kept particularly low if the at least one rib is arranged transversely to the longest extension of the cross section of the channel and connects mutually opposite edges of the housing which delimit the channel. Furthermore, the dimensions and thus a throttling effect of the ribs are kept particularly cering. It helps to further reduce the assembly effort of the fuel pump according to the invention if the rib is made in one piece with the regions of the housing adjoining the channels.
Die erfindungsgemäße Kraftstoffpumpe lässt sich besonders kostengünstig- fertigen, wenn zumindest eines der Gehäuseteile aus Kunststoff gefertigt ist. Die im Vergleich zu den Keramikplatten der bekannten Kra tstoffpumpe geringe Festigkeit der aus Kunststoff gefertigten Gehäuseteile wird durch die Rippen in den Kanälen ausgeglichen.The fuel pump according to the invention can be manufactured particularly inexpensively if at least one of the housing parts is made of plastic. The compared to the ceramic plates of the known Kra tstoffpumpe low strength of the plastic housing parts is compensated for by the ribs in the channels.
Eine Verbindung der Gehäuseteile erfordert gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einen besonders geringen konstruktiven Aufwand, wenn 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.According to another advantageous development of the invention, a connection of the housing parts requires a particularly low design effort if the housing parts are screwed together, one of the housing parts made of plastic having receptacles for nuts made of metal. The nuts made of metal ensure sufficient stability of the fuel pump according to the invention.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt inThe invention permits numerous embodiments. To further clarify its basic principle, one of these is shown in the drawing and is described below. This shows in
Figur 1 eine Schnittdarstellung durch eine Fördereinheit mit einer er indungsgemäßen Kraftstoff umpe,FIG. 1 shows a sectional view through a delivery unit with a fuel according to the invention,
Figur 2 eine Explosionsdarstellung der erfindungsgemäßen Kraftstoffpumpe aus Figur 1.FIG. 2 shows an exploded view of the fuel pump according to the invention from FIG. 1.
Figur 1 zeigt eine Schnittdarstellung durch eine Fördereinheit zum Förclern von Dieselkra stoff aus einem nicht dargestellten Kraf stoffbehälter eines Kraftfahrzeuges zu einer Brennkraftmaschine mit einer von einem Elektromotor 1 angetriebenen Kraftstoffpumpe 2. Die Kraftstoff umpe 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 is . Weiterhin hat die Welle 3 ein Radiallager mit einer Buchse 12 in dem dem Elektromotor 1 abgewandten Gehäuseteil 8 der Kra tstoffpumpe 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 Kraf stofflei- tun . Damit wird die Fördereinheit axial mit dem geförderten Kraftstoff durchströmt .Figure 1 shows a sectional view through a conveyor unit for conveying diesel fuel from a fuel tank, not shown, of a motor vehicle to one Internal combustion engine with a fuel pump 2 driven by an electric motor 1. The fuel umpe 2 has an inner rotor 4 connected to a shaft 3 of the electric motor 1, which forms an armature pair 6 with an outer rotor 5. The external rotor 5 is mounted radially in a ring element 7 and axially 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 non-rotatably connected to the inner rotor 4. Furthermore, the shaft 3 has a radial bearing with a bushing 12 in the housing part 8 of the fuel pump 2 facing away from the electric motor 1. A pump cover 13 has an intake port 14. The delivery unit has, on its end facing away from the fuel pump 2, a connecting piece 15 for a fuel line leading to the internal combustion engine. The delivered fuel thus flows axially through the delivery unit.
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 angeord- nete 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 Ver iefungen ausgebildete Aufnahmen 22. FIG. 2 shows in an exploded view of the fuel pump 2 from FIG. 1 that the housing parts 8, 9 each have an elongated channel 16, 17. The channel 17 arranged in the housing part 9 provided for arrangement near the electric motor 1 from FIG. 1 serves as the outlet of the fuel pump 2, while the channel 16 arranged in the housing part 8 provided for arrangement near the pump cover 13 from FIG. 1 serves as an inlet for the fuel pump 2 forms. The housing parts 8, 9 each have ribs 18, 19 which are arranged transversely to the longest extension of the channels 16, 17. The ribs 18, 19 connect mutually opposite edges of the respective housing part 8, 9 delimiting the respective channel 16, 17. These ribs 18, 19 ensure the intended stability in the region of the channels 16, 17, so that the housing parts 8, 9 are made of Plastic can be made. FIG. 2 further shows that the housing parts 8, 9 are connected to one another by means of screws 20. The screws 20 are screwed in with nuts 21 made of steel arranged in one of the housing parts 8. The housing part 8 has recesses 22 designed as recesses for the nuts 21.

Claims

Patentansprücheclaims
1. Nach dem Gerotorprinzip arbeitende Kraftstoffpumpe zur Förderung von Kraftstoff aus einem Kraftstof behälter eines Kraftfahrzeuges mit einem Gehäuse, mit einem zwischen zwei Gehäuseteilen gelagerten Läuferpaar, mit in dem Gehäuse angeordneten und langgestreckt gestalteten Kanälen eines Einlasses und eines Auslasses, da dur ch g ek e nn z e i chn e t , dass zumin- dest einer der Kanäle (16, 17) zumindest eine Rippe (18, 19) zur Versteifung des Gehäuses (10) hat.1. Working according to the gerotor principle fuel pump for delivering fuel from a fuel tank of a motor vehicle with a housing, with a pair of runners mounted between two housing parts, with arranged in the housing and elongated channels of an inlet and an outlet, as a result of g ek e It now shows that at least one of the channels (16, 17) has at least one rib (18, 19) for stiffening the housing (10).
2. Kraftstoff umpe nach Anspruch 1, dadur ch ge ke nn z e i chne t , dass die zumindest eine Rippe (18, 19) quer zur längsten Erstreckung des Querschnitts des Kanals (16, 17) angeordnet ist und einander gegenüberliegende, den Kanal (16, 17) begrenzende Ränder des Gehäuses (10) miteinander verbindet.2. The fuel pump according to claim 1, so that the at least one rib (18, 19) is arranged transversely to the longest extent of the cross section of the channel (16, 17) and the channel (16 , 17) bounding edges of the housing (10).
3. Kraftstoffpumpe nach Anspruch 1 oder 2, da dur ch ge ke nn z e i chn e t , dass die Rippe (18, 19) einstückig mit den an die Kanäle (16, 17) angrenzenden Bereichen des Gehäuses (10) gefertigt sind. . Kraftstof pumpe nach zumindest einem der vorhergehenden Ansprüche, da du rc h ge kenn z e i chne t , dass zumindest eines der Gehäuseteile (8, 9) aus Kunststoff gefertigt ist.3. Fuel pump according to claim 1 or 2, since by the use of the rib (18, 19) being made in one piece with the regions of the housing (10) adjoining the channels (16, 17). , Fuel pump according to at least one of the preceding claims, since you are characterized in that at least one of the housing parts (8, 9) is made of plastic.
5. Kraftstof pumpe nach zumindest einem der vorhergehenden Ansprüche , da du r c h g e k enn z e i c hn e t , 5. Fuel pump according to at least one of the preceding claims, since you rchgek enn zeic hn et,
dass die Gehäuseteile (8, 9) miteinander verschraubt sind, wobei eines der aus Kunststoff gefertigten Gehäuseteile (8) Aufnahmen (22) für Muttern (21) aus Metall hat. that the housing parts (8, 9) are screwed together, one of the plastic housing parts (8) having receptacles (22) for nuts (21) made of metal.
PCT/EP2004/051671 2003-09-09 2004-07-30 Inner gear-wheel pump comprising reinforced channels WO2005026552A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/571,217 US20060153706A1 (en) 2003-09-09 2004-07-30 Internal gear-wheel pump comprising reinforced channels
DE502004007363T DE502004007363D1 (en) 2003-09-09 2004-07-30 INTERNAL GEAR PUMP WITH REINFORCED OPENINGS
EP04766379A EP1664539B1 (en) 2003-09-09 2004-07-30 Inner gear-wheel pump comprising reinforced channels
JP2006525804A JP2007504398A (en) 2003-09-09 2004-07-30 Internal gear pump with reinforced opening

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
DE10341841.5 2003-09-09

Publications (1)

Publication Number Publication Date
WO2005026552A1 true WO2005026552A1 (en) 2005-03-24

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PCT/EP2004/051671 WO2005026552A1 (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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JP6418059B2 (en) * 2015-05-12 2018-11-07 株式会社デンソー Fuel pump
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CN1836107A (en) 2006-09-20
EP1664539B1 (en) 2008-06-11
KR20060113652A (en) 2006-11-02
DE10341841A1 (en) 2005-04-07
JP2007504398A (en) 2007-03-01
CN100564878C (en) 2009-12-02
EP1664539A1 (en) 2006-06-07
ES2308231T3 (en) 2008-12-01
US20060153706A1 (en) 2006-07-13
DE502004007363D1 (en) 2008-07-24

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