EP2146083A1 - Fuel supply system for a motor vehicle - Google Patents

Fuel supply system for a motor vehicle Download PDF

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Publication number
EP2146083A1
EP2146083A1 EP09100337A EP09100337A EP2146083A1 EP 2146083 A1 EP2146083 A1 EP 2146083A1 EP 09100337 A EP09100337 A EP 09100337A EP 09100337 A EP09100337 A EP 09100337A EP 2146083 A1 EP2146083 A1 EP 2146083A1
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EP
European Patent Office
Prior art keywords
fuel
box
channel
sieve
delivery device
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
EP09100337A
Other languages
German (de)
French (fr)
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EP2146083B1 (en
Inventor
Jens Rauber
Klaus Ruppert
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Continental Automotive GmbH
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Continental Automotive GmbH
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Publication date
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Publication of EP2146083A1 publication Critical patent/EP2146083A1/en
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    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank

Definitions

  • the invention relates to a fuel delivery device for a motor vehicle with a delivery unit for drawing fuel from a fuel tank, with a suction line for sucking fuel from a bottom region of the fuel tank, with a fuel filter connected to the suction line, with a box arranged at the bottom of the fuel tank Fuel filter and with a connecting piece for connecting the fuel filter to the suction line, wherein the box is designed like a sieve.
  • the fuel filter connected to the suction line serves as a coarse filter for prefiltering the fuel sucked in via the suction line and is preferably arranged at the lowest point of the fuel tank.
  • the known from practice fuel filter has a closed with a bottom plate cup-shaped member as a box.
  • the bottom plate is held by a provided with projections edge of the cup-shaped member at a distance from the bottom of the fuel tank.
  • the bottom plate and the cup-shaped member are provided with a plurality of openings for the production of the coarse filter. This allows filtered through the openings filtered fuel.
  • a disadvantage of the known fuel delivery device is that the assembly of the fuel filter is very complicated.
  • the bottom and the cup-shaped component require close tolerances because they must be without gaps. A flow of unfiltered fuel between the bottom and the cup-shaped component must be avoided become. As a result, the production of the fuel filter designed very complex.
  • the invention is based on the problem of further developing a fuel delivery device of the type mentioned above so that it is particularly simple in construction and inexpensive to manufacture.
  • the box is designed to be open on one side and connected to the connecting piece channel that the box rests with its open side on the bottom of the fuel tank and that a first sieve to the box and a second sieve to the Channel is arranged and that the first sieve and the second sieve are made in one piece from plastic.
  • the fuel filter can be particularly easy to manufacture in a single step of plastic injection molding. A rework or assembly before installation in the fuel tank is avoided thanks to the invention. As a result, only one tool is required for the manufacture of the fuel filter, resulting in a particularly simple production of the fuel filter.
  • the connection of the duct to the spigot is made straight, so that the shape of the duct and the spigot is created by a cylindrical core inserted into a mold.
  • the fuel filter has a high filtering effect if the box has a plurality of first openings for producing the first screen, the channel has a plurality of second openings for producing the second screen and if the screens are arranged one behind the other in the flow direction of the fuel.
  • a particularly large filter surface on the second sieve can be according to another advantageous embodiment of the invention simply generate when the channel is disposed in a wall of a longitudinal side of the box and is closed at its end facing away from the connecting piece end.
  • the second openings could, for example, be incorporated into the channel after the fuel filter has been manufactured.
  • it contributes, according to another advantageous embodiment of the invention, when the channel on its inside facing the inside of the box has a plurality of transverse to its longest extent transverse ribs for limiting the second openings.
  • These transverse ribs can be easily manufactured in the manufacture of the fuel filter by means of a correspondingly shaped mold.
  • the channel has on its inside a plurality of parallel to its longest extension extending longitudinal ribs for limiting the second openings.
  • the longitudinal ribs can be easily generated by means of a run through the connecting piece core in the manufacture of the fuel filter. A rework after production is thereby avoided.
  • the second openings of the second screen are particularly numerous and very small in design, when the transverse ribs and the longitudinal ribs are connected to one another at crossing points.
  • the fuel filter is particularly compact according to another advantageous embodiment of the invention, when projecting from the channel receiving wall of the box a peripheral edge and when in the assembled state of the fuel filter, the peripheral edge rests on the bottom of the fuel tank. As a result, the edge holds the channel at a distance to the bottom of the fuel tank. This forms below the channel a collecting space for the prefiltered from the first filter fuel. Clogging of the second, arranged on the channel sieve is thanks to the invention kept particularly low.
  • the fuel filter can be produced in a particularly cost-effective manner from injection-molded plastic, if opposing regions of the peripheral edge are designed to be parallel or slightly pointing away from one another.
  • the connecting piece is made in one piece with the first wire and the second wire and has a Christmas tree profile for attaching the suction line.
  • FIG. 1 shows a fuel conveyor 1 for conveying fuel from a fuel tank 2 of a motor vehicle with a arranged in the fuel tank 2 conveyor unit 3.
  • the conveyor unit 3 has a arranged in a surge pot 4 fuel pump 5.
  • the fuel pump 5 sucks fuel from the swirl pot 4 and promotes this to an internal combustion engine 6 of the motor vehicle.
  • the suction pump 7 sucks fuel through a suction line 8 and promotes the sucked fuel into the swirl pot 4.
  • the suction line 8 is guided to a remote from the swirl pot 4 fuel filter 9.
  • the fuel filter 9 is biased against a bottom 10 of the fuel tank 2 and serves for prefiltering of the fuel.
  • a plurality of fuel filters 9 provided with suction lines 8 may be arranged in the fuel tank 2.
  • the delivery unit 3 has, as a rule, further filters, not shown, for the fine filtering of the fuel pumped by the fuel pump 5 to the internal combustion engine 6.
  • FIG. 2 shows in an enlarged perspective view of the fuel filter 9 from FIG. 1 ,
  • the fuel filter 9 has a protruding from a box 11 connecting piece 12.
  • the connecting piece 12 is used to connect the in FIG. 1 shown suction line 8 and has a Christmas tree profile 13.
  • the box 11 has a first screen 14 with a plurality of first openings 15.
  • FIG. 3 shows the fuel filter 9 from FIG. 2 in a sectional view along the line III - III with adjacent areas of the bottom 10 of in FIG. 1
  • a channel 17 with a second sieve 18 is arranged in one Wall 16 of the box 11 .
  • the second screen 18 has a plurality of second openings 19.
  • On the inside of the channel 17 a plurality of longitudinal ribs 20 are arranged in the longitudinal direction.
  • On the bottom 10 of the fuel tank 2 side facing the channel 17 has transverse ribs 21.
  • the transverse ribs 21 and the longitudinal ribs 20 are interconnected at their crossing points and define the second openings 19 of the second screen 18.
  • the channel 17 has a plurality of stiffening ribs 22 on.
  • FIG. 4 shows the fuel filter 9 in a view from the side of the bottom 10 of the in FIG. 1 It can be seen that the channel 17 extends over the entire length of the box 11 and is closed at its end facing away from the connecting piece 12.
  • the box 11 is designed to be open on the side facing the bottom 10 and has a peripheral edge 23 on which a part of the first openings 15 is arranged in a U-shape.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The system has a supplying unit for supplying fuel, and a fuel filter casing (11) arranged at a base of a fuel tank. A connection fitting (12) connects a fuel filter (9) at an intake line, and the fuel filter casing is opened on one side. The fuel filter casing has a channel connected with the connection fitting and is prestressed against the base of the fuel tank with the opened side. The fuel filter has two filter units (14), which are provided at the fuel filter casing and the channel, respectively and are made of plastic as a single piece.

Description

Die Erfindung betrifft eine Kraftstofffördereinrichtung für ein Kraftfahrzeug mit einer Fördereinheit zum Ansaugen von Kraftstoff aus einem Kraftstoffbehälter, mit einer Saugleitung zum Ansaugen von Kraftstoff aus einem Bodenbereich des Kraftstoffbehälters, mit einem an der Saugleitung angeschlossenen Kraftstofffilter, mit einem an dem Boden des Kraftstoffbehälters angeordneten Kasten des Kraftstofffilters und mit einem Anschlussstutzen zum Anschluss des Kraftstofffilters an die Saugleitung, wobei der Kasten siebartig gestaltet ist.The invention relates to a fuel delivery device for a motor vehicle with a delivery unit for drawing fuel from a fuel tank, with a suction line for sucking fuel from a bottom region of the fuel tank, with a fuel filter connected to the suction line, with a box arranged at the bottom of the fuel tank Fuel filter and with a connecting piece for connecting the fuel filter to the suction line, wherein the box is designed like a sieve.

Solche Kraftstofffördereinrichtungen werden in heutigen Kraftfahrzeugen häufig eingesetzt und sind aus der Praxis bekannt. Der an der Saugleitung angeschlossene Kraftstofffilter dient als Grobfilter zur Vorfilterung des über die Saugleitung angesaugten Kraftstoffs und wird vorzugsweise an der tiefsten Stelle des Kraftstoffbehälters angeordnet.Such fuel delivery devices are widely used in today's motor vehicles and are known in practice. The fuel filter connected to the suction line serves as a coarse filter for prefiltering the fuel sucked in via the suction line and is preferably arranged at the lowest point of the fuel tank.

Der aus der Praxis bekannte Kraftstofffilter hat ein mit einer Bodenplatte verschlossenes topfförmiges Bauteil als Kasten. Die Bodenplatte wird von einem mit Vorsprüngen versehenen Rand des topfförmigen Bauteils auf Abstand zu dem Boden des Kraftstoffbehälters gehalten. Zudem sind die Bodenplatte und das topfförmige Bauteil mit einer Vielzahl von Öffnungen zur Erzeugung des Grobfilters versehen. Damit lässt sich über die Öffnungen gefilterter Kraftstoff ansaugen.The known from practice fuel filter has a closed with a bottom plate cup-shaped member as a box. The bottom plate is held by a provided with projections edge of the cup-shaped member at a distance from the bottom of the fuel tank. In addition, the bottom plate and the cup-shaped member are provided with a plurality of openings for the production of the coarse filter. This allows filtered through the openings filtered fuel.

Nachteilig bei der bekannten Kraftstofffördereinrichtung ist jedoch, dass sich die Montage des Kraftstofffilters sehr aufwändig gestaltet. Zudem benötigen der Boden und das topfförmige Bauteil enge Toleranzen da sie spaltfrei aneinander liegen müssen. Ein Vorbeiströmen von ungefiltertem Kraftstoff zwischen dem Boden und dem topfförmigen Bauteil muss vermieden werden. Hierdurch gestaltet sich die Fertigung des Kraftstofffilters sehr aufwändig.However, a disadvantage of the known fuel delivery device is that the assembly of the fuel filter is very complicated. In addition, the bottom and the cup-shaped component require close tolerances because they must be without gaps. A flow of unfiltered fuel between the bottom and the cup-shaped component must be avoided become. As a result, the production of the fuel filter designed very complex.

Der Erfindung liegt das Problem zugrunde, eine Kraftstofffördereinrichtung der eingangs genannten Art so weiter zu bilden, dass sie besonders einfach aufgebaut und kostengünstig zu fertigen ist.The invention is based on the problem of further developing a fuel delivery device of the type mentioned above so that it is particularly simple in construction and inexpensive to manufacture.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass der Kasten einseitig offen gestaltet ist und einen mit dem Anschlussstutzen verbundenen Kanal hat, dass der Kasten mit seiner offenen Seite auf dem Boden des Kraftstoffbehälters aufliegt und dass ein erstes Sieb an dem Kasten und ein zweites Sieb an dem Kanal angeordnet ist und dass das erste Sieb und das zweite Sieb einstückig aus Kunststoff gefertigt sind.This problem is inventively solved in that the box is designed to be open on one side and connected to the connecting piece channel that the box rests with its open side on the bottom of the fuel tank and that a first sieve to the box and a second sieve to the Channel is arranged and that the first sieve and the second sieve are made in one piece from plastic.

Durch diese Gestaltung lässt sich der Kraftstofffilter besonders einfach in einem Arbeitsgang aus Kunststoff im Spritzgussverfahren fertigen. Eine Nacharbeit oder eine Montage vor dem Einbau im Kraftstoffbehälter wird dank der Erfindung vermieden. Hierdurch wird zur Fertigung des Kraftstofffilters nur ein Werkzeug benötigt, was zu einer besonders einfachen Fertigung des Kraftstofffilters führt. Vorzugsweise ist die Verbindung des Kanals mit dem Anschlussstutzen gerade gestaltet, so dass die Form des Kanals und des Anschlussstutzens von einem in eine Werkzeugform eingeführten, zylindrischen Kern erzeugt wird.With this design, the fuel filter can be particularly easy to manufacture in a single step of plastic injection molding. A rework or assembly before installation in the fuel tank is avoided thanks to the invention. As a result, only one tool is required for the manufacture of the fuel filter, resulting in a particularly simple production of the fuel filter. Preferably, the connection of the duct to the spigot is made straight, so that the shape of the duct and the spigot is created by a cylindrical core inserted into a mold.

Der Kraftstofffilter weist gemäß einer vorteilhaften Weiterbildung der Erfindung eine hohe Filterwirkung auf, wenn der Kasten mehrere erste Öffnungen zur Erzeugung des ersten Siebes, der Kanal mehrere zweite Öffnungen zur Erzeugung des zweiten Siebes hat und wenn die Siebe in Strömungsrichtung des Kraftstoffs hintereinander angeordnet sind.According to an advantageous development of the invention, the fuel filter has a high filtering effect if the box has a plurality of first openings for producing the first screen, the channel has a plurality of second openings for producing the second screen and if the screens are arranged one behind the other in the flow direction of the fuel.

Eine besonders große Filterfläche an dem zweiten Sieb lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach erzeugen, wenn der Kanal in einer Wandung einer Längsseite des Kastens angeordnet ist und an seinem von dem Anschlussstutzen abgewandten Ende geschlossen ist.A particularly large filter surface on the second sieve can be according to another advantageous embodiment of the invention simply generate when the channel is disposed in a wall of a longitudinal side of the box and is closed at its end facing away from the connecting piece end.

Die zweiten Öffnungen könnten beispielsweise nach der Fertigung des Kraftstofffilters in den Kanal eingearbeitet werden. Zur Vereinfachung der Fertigung des Kraftstofffilters trägt es jedoch gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn der Kanal an seiner der Innenseite des Kastens zugewandten Außenseite eine Vielzahl von quer zu seiner längsten Erstreckung verlaufende Querrippen zur Begrenzung der zweiten Öffnungen hat. Diese Querrippen lassen sich einfach bei der Fertigung des Kraftstofffilters mittels einer entsprechend gestalteten Werkzeugform fertigen.The second openings could, for example, be incorporated into the channel after the fuel filter has been manufactured. However, to simplify the manufacture of the fuel filter, it contributes, according to another advantageous embodiment of the invention, when the channel on its inside facing the inside of the box has a plurality of transverse to its longest extent transverse ribs for limiting the second openings. These transverse ribs can be easily manufactured in the manufacture of the fuel filter by means of a correspondingly shaped mold.

Zur Vereinfachung der Fertigung des zweiten Siebes des Kraftstofffilters trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn der Kanal an seiner Innenseite mehrere parallel zu seiner längsten Erstreckung verlaufende Längsrippen zur Begrenzung der zweiten Öffnungen hat. Durch diese Gestaltung lassen sich die Längsrippen mittels eines durch den Anschlussstutzen geführten Kerns bei der Fertigung des Kraftstofffilters einfach erzeugen. Eine Nacharbeit nach der Fertigung wird hierdurch vermieden.To simplify the production of the second screen of the fuel filter, it contributes according to another advantageous embodiment of the invention, when the channel has on its inside a plurality of parallel to its longest extension extending longitudinal ribs for limiting the second openings. By this design, the longitudinal ribs can be easily generated by means of a run through the connecting piece core in the manufacture of the fuel filter. A rework after production is thereby avoided.

Die zweiten Öffnungen des zweiten Siebes sind gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders zahlreich und sehr klein gestaltet, wenn die Querrippen und die Längsrippen an Kreuzungspunkten miteinander verbunden sind.According to another advantageous development of the invention, the second openings of the second screen are particularly numerous and very small in design, when the transverse ribs and the longitudinal ribs are connected to one another at crossing points.

Der Kraftstofffilter gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders kompakt, wenn von der den Kanal aufnehmenden Wandung des Kastens ein umlaufender Rand absteht und wenn im montierten Zustand des Kraftstofffilters der umlaufende Rand auf dem Boden des Kraftstoffbehälters aufliegt. Hierdurch hält der Rand den Kanal auf Abstand zu dem Boden des Kraftstoffbehälters. Damit bildet sich unterhalb des Kanals ein Sammelraum für den vom ersten Sieb vorgefilterten Kraftstoff. Ein Verstopfen des zweiten, am Kanal angeordneten Siebes wird dankt der Erfindung besonders gering gehalten.The fuel filter is particularly compact according to another advantageous embodiment of the invention, when projecting from the channel receiving wall of the box a peripheral edge and when in the assembled state of the fuel filter, the peripheral edge rests on the bottom of the fuel tank. As a result, the edge holds the channel at a distance to the bottom of the fuel tank. This forms below the channel a collecting space for the prefiltered from the first filter fuel. Clogging of the second, arranged on the channel sieve is thanks to the invention kept particularly low.

Der Kraftstofffilter lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders kostengünstig aus Kunststoff im Spritzgussverfahren fertigen, wenn einander gegenüberstehende Bereiche des umlaufenden Randes parallel oder geringfügig voneinander weg weisend gestaltet sind.According to another advantageous development of the invention, the fuel filter can be produced in a particularly cost-effective manner from injection-molded plastic, if opposing regions of the peripheral edge are designed to be parallel or slightly pointing away from one another.

Zur weiteren Vereinfachung der Fertigung des Kraftstofffilters trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn der Anschlussstutzen einstückig mit dem ersten Sieb und dem zweiten Sieb gefertigt ist und ein Tannenbaumprofil zum Aufstecken der Saugleitung hat.To further simplify the manufacture of the fuel filter, it contributes according to another advantageous embodiment of the invention, when the connecting piece is made in one piece with the first wire and the second wire and has a Christmas tree profile for attaching the suction line.

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

Fig. 1
schematisch eine erfindungsgemäße Kraftstofffördereinrichtung,
Fig. 2
eine vergrößerte perspektivische Darstellung eines Kraftstofffilters der erfindungsgemäßen Kraftstofffördereinrichtung aus Figur 1,
Fig. 3
eine Schnittdarstellung durch den Kraftstofffilter aus Figur 2 entlang der Linie III - III mit einem angrenzenden Bereich des Bodens des Kraftstoffbehälters,
Fig. 4
den Kraftstofffilter aus Figur 2 in einer perspektivischen Ansicht von einem Boden eines Kraftstoffbehälters.
The invention allows numerous embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. This shows in
Fig. 1
schematically a fuel delivery device according to the invention,
Fig. 2
an enlarged perspective view of a fuel filter of the fuel conveyor according to the invention from FIG. 1 .
Fig. 3
a sectional view through the fuel filter FIG. 2 along the line III-III with an adjacent area of the bottom of the fuel tank,
Fig. 4
the fuel filter off FIG. 2 in a perspective view of a bottom of a fuel tank.

Figur 1 zeigt eine Kraftstofffördereinrichtung 1 zum Fördern von Kraftstoff aus einem Kraftstoffbehälter 2 eines Kraftfahrzeuges mit einer in dem Kraftstoffbehälter 2 angeordneten Fördereinheit 3. Die Fördereinheit 3 hat eine in einem Schwalltopf 4 angeordnete Kraftstoffpumpe 5. Die Kraftstoffpumpe 5 saugt Kraftstoff aus dem Schwalltopf 4 an und fördert diesen zu einer Brennkraftmaschine 6 des Kraftfahrzeuges. Weiterhin fördert die Kraftstoffpumpe 5 Kraftstoff als Treibmittel zu einer Saugstrahlpumpe 7. Die Saugstrahlpumpe 7 saugt Kraftstoff über eine Saugleitung 8 an und fördert den angesaugten Kraftstoff in den Schwalltopf 4. Die Saugleitung 8 ist zu einem von dem Schwalltopf 4 entfernt angeordneten Kraftstofffilter 9 geführt. Der Kraftstofffilter 9 ist gegen einen Boden 10 des Kraftstoffbehälters 2 vorgespannt und dient der Vorfilterung des Kraftstoffs. Selbstverständlich können mehrere mit Kraftstofffiltern 9 versehene Saugleitungen 8 in dem Kraftstoffbehälter 2 angeordnet sein. Die Fördereinheit 3 weist in der Regel weitere, nicht dargestellte Filter zur Feinfilterung des von der Kraftstoffpumpe 5 zu der Brennkraftmaschine 6 geförderten Kraftstoffs auf. FIG. 1 shows a fuel conveyor 1 for conveying fuel from a fuel tank 2 of a motor vehicle with a arranged in the fuel tank 2 conveyor unit 3. The conveyor unit 3 has a arranged in a surge pot 4 fuel pump 5. The fuel pump 5 sucks fuel from the swirl pot 4 and promotes this to an internal combustion engine 6 of the motor vehicle. The suction pump 7 sucks fuel through a suction line 8 and promotes the sucked fuel into the swirl pot 4. The suction line 8 is guided to a remote from the swirl pot 4 fuel filter 9. The fuel filter 9 is biased against a bottom 10 of the fuel tank 2 and serves for prefiltering of the fuel. Of course, a plurality of fuel filters 9 provided with suction lines 8 may be arranged in the fuel tank 2. The delivery unit 3 has, as a rule, further filters, not shown, for the fine filtering of the fuel pumped by the fuel pump 5 to the internal combustion engine 6.

Figur 2 zeigt in einer vergrößerten perspektivischen Ansicht den Kraftstofffilter 9 aus Figur 1. Der Kraftstofffilter 9 weist einen von einem Kasten 11 abstehenden Anschlussstutzen 12 auf. Der Anschlussstutzen 12 dient zum Anschluss der in Figur 1 dargestellten Saugleitung 8 und hat ein Tannenbaumprofil 13. Der Kasten 11 weist ein erstes Sieb 14 mit einer Vielzahl von ersten Öffnungen 15 auf. FIG. 2 shows in an enlarged perspective view of the fuel filter 9 from FIG. 1 , The fuel filter 9 has a protruding from a box 11 connecting piece 12. The connecting piece 12 is used to connect the in FIG. 1 shown suction line 8 and has a Christmas tree profile 13. The box 11 has a first screen 14 with a plurality of first openings 15.

Figur 3 zeigt den Kraftstofffilter 9 aus Figur 2 in einer Schnittdarstellung entlang der Linie III - III mit angrenzenden Bereichen des Bodens 10 des in Figur 1 dargestellten Kraftstoffbehälters 2. Hierbei ist zu erkennen, dass in einer Wandung 16 des Kastens 11 ein Kanal 17 mit einem zweiten Sieb 18 angeordnet ist. Das zweite Sieb 18 weist eine Vielzahl von zweiten Öffnungen 19 auf. Auf der Innenseite des Kanals 17 sind in Längsrichtung mehrere Längsrippen 20 angeordnet. Auf der dem Boden 10 des Kraftstoffbehälters 2 zugewandten Seite hat der Kanal 17 Querrippen 21. Die Querrippen 21 und die Längsrippen 20 sind an ihren Kreuzungspunkten miteinander verbunden und begrenzen die zweiten Öffnungen 19 des zweiten Siebes 18. An der Außenseite weist der Kanal 17 mehrere Versteifungsrippen 22 auf. FIG. 3 shows the fuel filter 9 from FIG. 2 in a sectional view along the line III - III with adjacent areas of the bottom 10 of in FIG. 1 It can be seen that in one Wall 16 of the box 11 a channel 17 with a second sieve 18 is arranged. The second screen 18 has a plurality of second openings 19. On the inside of the channel 17 a plurality of longitudinal ribs 20 are arranged in the longitudinal direction. On the bottom 10 of the fuel tank 2 side facing the channel 17 has transverse ribs 21. The transverse ribs 21 and the longitudinal ribs 20 are interconnected at their crossing points and define the second openings 19 of the second screen 18. On the outside, the channel 17 has a plurality of stiffening ribs 22 on.

Figur 4 zeigt den Kraftstofffilter 9 in einer Ansicht von der Seite des Bodens 10 des in Figur 1 dargestellten Kraftstoffbehälters 2. Hierbei ist zu erkennen, dass sich der Kanal 17 über die gesamte Länge des Kastens 11 erstreckt und an seinem dem Anschlussstutzen 12 abgewandten Ende geschlossen ist. Der Kasten 11 ist auf der dem Boden 10 zugewandten Seite hin offen gestaltet und weist einen umlaufenden Rand 23 auf, an dem ein Teil der ersten Öffnungen 15 U-förmig angeordnet ist. FIG. 4 shows the fuel filter 9 in a view from the side of the bottom 10 of the in FIG. 1 It can be seen that the channel 17 extends over the entire length of the box 11 and is closed at its end facing away from the connecting piece 12. The box 11 is designed to be open on the side facing the bottom 10 and has a peripheral edge 23 on which a part of the first openings 15 is arranged in a U-shape.

Claims (9)

Kraftstofffördereinrichtung für ein Kraftfahrzeug mit einer Fördereinheit zum Ansaugen von Kraftstoff aus einem Kraftstoffbehälter, mit einer Saugleitung zum Ansaugen von Kraftstoff aus einem Bodenbereich des Kraftstoffbehälters, mit einem an der Saugleitung angeschlossenen Kraftstofffilter, mit einem an dem Boden des Kraftstoffbehälters angeordneten Kasten des Kraftstofffilters und mit einem Anschlussstutzen zum Anschluss des Kraftstofffilters an die Saugleitung, wobei der Kasten siebartig gestaltet ist,
dadurch gekennzeichnet, dass der Kasten (11) einseitig offen gestaltet ist und einen mit dem Anschlussstutzen (12) verbundenen Kanal (17) hat, dass der Kasten (11) mit seiner offenen Seite auf dem Boden (10) des Kraftstoffbehälters (2) aufliegt und dass ein erstes Sieb (14) an dem Kasten (11) und ein zweites Sieb (18) an dem Kanal (17) angeordnet ist und dass das erste Sieb (14) und das zweite Sieb (18) einstückig aus Kunststoff gefertigt sind.A fuel delivery system for a motor vehicle having a delivery unit for drawing fuel from a fuel tank, having a suction line for drawing fuel from a bottom portion of the fuel tank, having a fuel filter connected to the suction pipe, having a box of the fuel filter disposed at the bottom of the fuel tank, and having a Connecting piece for connecting the fuel filter to the suction line, wherein the box is designed sieve-like,
characterized in that the box (11) is designed to be open on one side and has a connection (12) connected to the channel (17) that the box (11) rests with its open side on the bottom (10) of the fuel tank (2) and that a first sieve (14) is arranged on the box (11) and a second sieve (18) on the channel (17) and that the first sieve (14) and the second sieve (18) are made in one piece from plastic. Kraftstofffördereinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Kasten (11) mehrere erste Öffnungen (15) zur Erzeugung des ersten Siebes (14) und der Kanal (17) mehrere zweite Öffnungen (19) zur Erzeugung des zweiten Siebes (18) hat und dass die Siebe (14, 18) in Strömungsrichtung des Kraftstoffs hintereinander angeordnet sind.Fuel delivery device according to claim 1, characterized in that the box (11) has a plurality of first openings (15) for producing the first screen (14) and the channel (17) has a plurality of second openings (19) for producing the second screen (18) and the sieves (14, 18) are arranged one behind the other in the flow direction of the fuel. Kraftstofffördereinrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass der Kanal (17) in einer Wandung (16) einer Längsseite des Kastens (11) angeordnet ist und an seinem von dem Anschlussstutzen (12) abgewandten Ende geschlossen ist.Fuel delivery device according to claim 1 or 2,
characterized in that the channel (17) is arranged in a wall (16) of a longitudinal side of the box (11) and is closed at its end remote from the connecting piece (12). Kraftstofffördereinrichtung nach Anspruch 2 oder 3,
dadurch gekennzeichnet, dass der Kanal (17) an seiner der Innenseite des Kastens (11) zugewandten Außenseite eine Vielzahl von quer zu seiner längsten Erstreckung verlaufende Querrippen (21) zur Begrenzung der zweiten Öffnungen (19) hat.Fuel delivery device according to claim 2 or 3,
characterized in that the channel (17) on its inside of the box (11) facing the outside has a plurality of transverse to its longest extension transverse ribs (21) for defining the second openings (19). Kraftstofffördereinrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Kanal (17) an seiner Innenseite mehrere parallel zu seiner längsten Erstreckung verlaufende Längsrippen (20) zur Begrenzung der zweiten Öffnungen (19) hat.Fuel delivery device according to one of claims 2 to 4, characterized in that the channel (17) has on its inside a plurality of parallel to its longest extension extending longitudinal ribs (20) for limiting the second openings (19). Kraftstofffördereinrichtung nach Anspruch 4 und 5, dadurch gekennzeichnet, dass die Querrippen (21) und die Längsrippen (20) an Kreuzungspunkten miteinander verbunden sind.Fuel delivery device according to claim 4 and 5, characterized in that the transverse ribs (21) and the longitudinal ribs (20) are interconnected at points of intersection. Kraftstofffördereinrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass von der den Kanal (17) aufnehmenden Wandung (16) des Kastens (11) ein umlaufender Rand (23) absteht und dass im montierten Zustand des Kraftstofffilters (9) der umlaufende Rand (23) auf dem Boden (10) des Kraftstoffbehälters (2) aufliegt.Fuel delivery device according to one of claims 3 to 6, characterized in that from the channel (17) receiving the wall (16) of the box (11) projects a peripheral edge (23) and that in the mounted state of the fuel filter (9) of the peripheral edge (23) on the bottom (10) of the fuel tank (2) rests. Kraftstofffördereinrichtung nach Anspruch 7, dadurch gekennzeichnet, dass einander gegenüberstehende Bereiche des umlaufenden Randes (23) parallel oder geringfügig voneinander weg weisend gestaltet sind.Fuel delivery device according to claim 7, characterized in that opposing regions of the peripheral edge (23) are designed parallel or slightly away from each other. Kraftstofffördereinrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Anschlussstutzen (12) einstückig mit dem ersten Sieb (18) und dem zweiten Sieb (18) gefertigt ist und ein Tannenbaumprofil (13) zum Aufstecken der Saugleitung (8) hat.Fuel delivery device according to one of the preceding claims, characterized in that the connecting piece (12) is made in one piece with the first sieve (18) and the second sieve (18) and has a Christmas tree profile (13) for attaching the suction line (8).
EP09100337A 2008-07-14 2009-06-15 Fuel supply system for a motor vehicle Active EP2146083B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008033057A DE102008033057A1 (en) 2008-07-14 2008-07-14 Fuel delivery device for a motor vehicle

Publications (2)

Publication Number Publication Date
EP2146083A1 true EP2146083A1 (en) 2010-01-20
EP2146083B1 EP2146083B1 (en) 2011-02-23

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ID=41217793

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Application Number Title Priority Date Filing Date
EP09100337A Active EP2146083B1 (en) 2008-07-14 2009-06-15 Fuel supply system for a motor vehicle

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EP (1) EP2146083B1 (en)
AT (1) ATE499521T1 (en)
BR (1) BRPI0904854B8 (en)
DE (2) DE102008033057A1 (en)
ES (1) ES2360754T3 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609905A1 (en) * 1986-03-24 1987-10-01 Alois Ferch Filter for fuels
DE4236490C1 (en) * 1992-10-29 1994-05-19 Stihl Maschf Andreas Fuel suction head in tank - has plastics housing for filter element inserted through end opening
US6807952B1 (en) * 2003-07-22 2004-10-26 Ti Group Automotive Systems, L.L.C. Fuel tank and fuel flow control device
WO2005085623A1 (en) * 2004-03-03 2005-09-15 Siemens Aktiengesellschaft Delivery unit
DE102007018357A1 (en) * 2006-04-27 2007-10-31 Aisan Kogyo K.K., Obu Fuel injection system for a hydraulic or pneumatic control system, has a housing with two side openings and further side with further opening, switch valve, throttle return valve and work valve with compact structure

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618649A1 (en) * 1996-05-09 1997-11-13 Bosch Gmbh Robert Fuel delivery device of a motor vehicle
JP4215679B2 (en) * 2004-04-16 2009-01-28 株式会社ミツバ Filter for washer pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3609905A1 (en) * 1986-03-24 1987-10-01 Alois Ferch Filter for fuels
DE4236490C1 (en) * 1992-10-29 1994-05-19 Stihl Maschf Andreas Fuel suction head in tank - has plastics housing for filter element inserted through end opening
US6807952B1 (en) * 2003-07-22 2004-10-26 Ti Group Automotive Systems, L.L.C. Fuel tank and fuel flow control device
WO2005085623A1 (en) * 2004-03-03 2005-09-15 Siemens Aktiengesellschaft Delivery unit
DE102007018357A1 (en) * 2006-04-27 2007-10-31 Aisan Kogyo K.K., Obu Fuel injection system for a hydraulic or pneumatic control system, has a housing with two side openings and further side with further opening, switch valve, throttle return valve and work valve with compact structure

Also Published As

Publication number Publication date
DE502009000391D1 (en) 2011-04-07
BRPI0904854B1 (en) 2020-02-11
DE102008033057A1 (en) 2010-01-21
ES2360754T3 (en) 2011-06-08
ATE499521T1 (en) 2011-03-15
BRPI0904854A2 (en) 2011-02-08
EP2146083B1 (en) 2011-02-23
BRPI0904854B8 (en) 2023-01-17

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