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EP1136689B1 - Device for supplying fuel - Google Patents

Device for supplying fuel Download PDF

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Publication number
EP1136689B1
EP1136689B1 EP01104331A EP01104331A EP1136689B1 EP 1136689 B1 EP1136689 B1 EP 1136689B1 EP 01104331 A EP01104331 A EP 01104331A EP 01104331 A EP01104331 A EP 01104331A EP 1136689 B1 EP1136689 B1 EP 1136689B1
Authority
EP
European Patent Office
Prior art keywords
fuel
bypass line
delivery device
fuel filter
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01104331A
Other languages
German (de)
French (fr)
Other versions
EP1136689A3 (en
EP1136689A2 (en
Inventor
Bernd Rumpf
Dieter Keller
Christian Kochsmeier
Peter-Andreas Löw
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 AG, Siemens Corp filed Critical Siemens AG
Publication of EP1136689A2 publication Critical patent/EP1136689A2/en
Publication of EP1136689A3 publication Critical patent/EP1136689A3/en
Application granted granted Critical
Publication of EP1136689B1 publication Critical patent/EP1136689B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • 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
    • F02M37/36—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 with bypass means
    • 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
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm

Definitions

  • the invention relates to a conveyor for conveying of fuel from a fuel tank to one Internal combustion engine of a motor vehicle with a feed pump and with one connected to the feed pump Flow line and with one arranged in the flow line Fuel filter.
  • Such conveyors are used in today's motor vehicles frequently used and are known from practice (e.g. DE 19716979).
  • the fuel filter to reduce one Escape of fuel into the environment within the Fuel tank arranged.
  • the fuel filter must therefore have a service opening in the fuel tank be opened. Through the service opening and the seal escapes from the fuel tank however, a large amount of fuel in the area.
  • the invention is based on the problem of a conveyor of the type mentioned in such a way that a promotion of fuel after adding the Fuel filter reliably secured with dirt and that there is an escape of fuel into the environment largely prevented.
  • the supply line is one that leads past the fuel filter Has bypass line and that means for sealing the bypass line in the basic state and release the bypass line after a specified period of use or Consumption stage of the fuel filter are provided.
  • the fuel bypassed the fuel filter can be according to another advantageous development simply filter the invention when in the bypass line a second fuel filter is arranged.
  • the number of sealing points on the outside of the fuel tank can be advantageous according to another Keep further development of the invention particularly low, if the bypass line and that through the fuel filter leading area of the flow line inside the fuel tank are merged.
  • the outside of the fuel tank another Position the fuel filter if the bypass line and the area of the supply line leading through the fuel filter one connection on the outside of each Have fuel tank and if the bypass line has a blind closure.
  • the means for closing and releasing the bypass line are designed according to another advantageous Further development of the invention is structurally particularly simple, if they have a changeover valve arranged in the supply line exhibit.
  • the changeover valve can be operated manually, for example if there is no fuel supply.
  • the control of the means for locking and releasing the bypass line requires a particularly low one construction effort if the means to close and Release the bypass line from the pressure upstream of the fuel filter are controllable.
  • the changeover valve is designed according to another advantageous further development of the invention is particularly constructive easy if it's a longitudinally slidable Has closing body.
  • the switching valve can be controlled manually, for example or electrically controlled.
  • the control of the changeover valve however requires according to another advantageous development of the invention a particularly little effort if the movement of the closing body in Dependence of the pressure of the feed pump is controllable.
  • the switching valve can be advantageous according to another Development of the invention with particularly little Control construction effort electrically or manually, if the changeover valve has a rotatable closing body.
  • Figure 1 shows an upper portion of a fuel tank 1 with a conveyor 2.
  • the conveyor 2 has a feed pump 3 for conveying Fuel into an internal combustion engine, not shown leading flow line 4.
  • the lead pipe 4 penetrates one inserted into an assembly opening 5 Flange 6.
  • Inside the flow line 4 is a fuel filter 7 is arranged.
  • the fuel filter 7 is parallel to one to one on the outside of the Flange 6 located blind closure 8 guided bypass line 9 arranged.
  • FIG. 2 shows a conveyor 11, in which in the around the first fuel filter 7 bypass line 9 a second fuel filter 12 is arranged. Seen in the flow direction after the fuel filters 7, 12 is a switching valve 13 which is optional one or the other fuel filter 7, 12 with the area outside the fuel tank the flow line 4 connects. This can help clogging the first fuel filter 7, the switching valve 13 can be controlled so that the second Fuel filter 12 is flowed through with fuel.
  • a switching valve 13 Seen in the flow direction after the fuel filters 7, 12 is a switching valve 13 which is optional one or the other fuel filter 7, 12 with the area outside the fuel tank the flow line 4 connects. This can help clogging the first fuel filter 7, the switching valve 13 can be controlled so that the second Fuel filter 12 is flowed through with fuel.
  • Figure 3 shows a conveyor 14 in which a changeover valve 15 seen in the flow direction before Fuel filter 7 is arranged.
  • the Switching valve can optionally fuel over the Fuel filter 7 or through the bypass line 16 through direct a second fuel filter 17.
  • the second fuel filter 17 can initially be omitted and this only after switching the switching valve 15 in the outside of the fuel tank 1 Mount the area of the flow line 4.
  • the conveyor 14 can also Provide multiple changeover valves, not shown, and two or more bypass lines with or without arranged therein Have fuel filters.
  • FIG. 4 shows a changeover valve 18 as it is in the conveying devices 11, 14 used according to Figures 2 and 3 can be.
  • the switching valve 18 has one with the feed pump 3 shown in FIGS. 2 and 3 connected port 19, one to the first fuel filter 7 leading connector 20 and a connector 21 for the bypass line 9, 16.
  • a closing body 22 is longitudinally movable arranged, which is the terminal 21 of the bypass line 9, 16 can either lock or release.
  • the closing body 22 has an external thread 23 and is in an internal thread 24 of the connection 19 of the feed pump 3 screwed in. Through an opening 25 is a slot 26 of the closing body 22 for attaching a not shown Turning tool accessible.
  • Figure 5 shows a changeover valve 27 as it is in the conveyor 14 from Figure 3 can be used.
  • the connection can be made 21 of the bypass line 16 from a longitudinally movable Release or close the closing body 28.
  • the pressure in the connection increases 19 of the feed pump 3.
  • the closing body 28 will then by the pressure of the feed pump 3 against the Force of the spring 29 moves until the terminal 21 of the bypass line 16 is released.
  • FIG. 6 shows a changeover valve 31 as it is in the conveying devices 11, 14 from Figures 2 and 3 used can be.
  • this changeover valve 31 is the Connection 19 for the feed pump 3 arranged centrally. From this connection 19 lead with the first fuel filter 7 connected connector 20 and connector 21 the bypass line 9, 16 away.
  • a rotatable Closing body 32 allows connection 19 of the feed pump 3 optionally with the other two connections 20, 21 connect.
  • the control of the closing body 32 can either electrical or manual.

Landscapes

  • 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)
  • Pipeline Systems (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Filtration Of Liquid (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine Fördereinrichtung zum Fördern von Kraftstoff aus einem Kraftstoffbehälter zu einer Brennkraftmaschine eines Kraftfahrzeuges mit einer Förderpumpe und mit einer mit der Förderpumpe verbundenen Vorlaufleitung und mit einem in der Vorlaufleitung angeordneten Kraftstoffilter.The invention relates to a conveyor for conveying of fuel from a fuel tank to one Internal combustion engine of a motor vehicle with a feed pump and with one connected to the feed pump Flow line and with one arranged in the flow line Fuel filter.

Solche Fördereinrichtungen werden in heutigen Kraftfahrzeugen häufig eingesetzt und sind aus der Praxis bekannt (z.B. DE 19716979). Hierbei ist der Kraftstoffilter zur Verringerung eines Entweichens von Kraftstoff in die Umwelt innerhalb des Kraftstoffbehälters angeordnet. Bei einem Austausch des Kraftstoffilters muß daher eine Serviceöffnung des Kraftstoffbehälters geöffnet werden. Durch die Serviceöffnung und die Abdichtung gegenüber dem Kraftstoffbehälter entweicht jedoch eine große Menge an Kraftstoff in die Umgebung.Such conveyors are used in today's motor vehicles frequently used and are known from practice (e.g. DE 19716979). Here is the fuel filter to reduce one Escape of fuel into the environment within the Fuel tank arranged. When the The fuel filter must therefore have a service opening in the fuel tank be opened. Through the service opening and the seal escapes from the fuel tank however, a large amount of fuel in the area.

Der Erfindung liegt das Problem zugrunde, eine Fördereinrichtung der eingangs genannten Art so zu gestalten, daß eine Förderung von Kraftstoff nach einer Zusetzung des Kraftstoffilters mit Schmutz zuverlässig sichergestellt ist und daß sie ein Entweichen von Kraftstoff in die Umgebung weitgehend verhindert.The invention is based on the problem of a conveyor of the type mentioned in such a way that a promotion of fuel after adding the Fuel filter reliably secured with dirt and that there is an escape of fuel into the environment largely prevented.

Dieses Problem wird erfindungsgemäß dadurch gelöst, daß die Vorlaufleitung eine an dem Kraftstoffilter vorbeigeführte Bypass-Leitung hat und daß Mittel zum Verschließen der Bypass-Leitung im Grundzustand und Freigeben der Bypass-Leitung nach einer vorgesehenen Gebrauchsdauer oder Verbrauchsstadium des Kraftstoffilters vorgesehen sind.This problem is solved according to the invention in that the supply line is one that leads past the fuel filter Has bypass line and that means for sealing the bypass line in the basic state and release the bypass line after a specified period of use or Consumption stage of the fuel filter are provided.

Durch diese Gestaltung verbleibt der mit Schmutz zugesetzte Kraftstoffilter einfach innerhalb des Kraftstoffbehälters. Der Kraftstoff wird anschließend an dem Kraftstoffilter vorbeigeleitet. Deshalb wird eine zuverlässige Förderung von Kraftstoff sichergestellt. Eine Serviceöffnung des Kraftstoffbehälters ist daher nicht erforderlich. Hierdurch wird ein Entweichen von Kraftstoff in die Umgebung weitgehend vermieden.This design leaves the dirt clogged Simply put the fuel filter inside the fuel tank. The fuel is then on the fuel filter bypasses. That is why it becomes reliable Promotion of fuel ensured. A service opening the fuel tank is therefore not necessary. This will prevent fuel from escaping into the Environment largely avoided.

Der an dem Kraftstoffilter vorbeigeleitete Kraftstoff läßt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach filtern, wenn in der Bypass-Leitung ein zweiter Kraftstoffilter angeordnet ist.The fuel bypassed the fuel filter can be according to another advantageous development simply filter the invention when in the bypass line a second fuel filter is arranged.

Zur weiteren Verringerung des Entweichens des Kraftstoffs trägt es bei, wenn die Mittel zum Verschließen und Freigeben der Bypass-Leitung zur Anordnung innerhalb des Kraftstoffbehälters vorgesehen sind.To further reduce fuel leakage it helps if the means of locking and releasing the bypass line for arrangement within the Fuel tank are provided.

Die Anzahl der Dichtstellen an der Außenseite des Kraftstoffbehälters läßt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn die Bypass-Leitung und der durch den Kraftstoffilter führende Bereich der Vorlaufleitung innerhalb des Kraftstoffbehälters zusammengeführt sind.The number of sealing points on the outside of the fuel tank can be advantageous according to another Keep further development of the invention particularly low, if the bypass line and that through the fuel filter leading area of the flow line inside the fuel tank are merged.

Bei mit Schmutz zugesetztem Kraftstoffilter läßt sich an der Außenseite des Kraftstoffbehälters ein weiterer Kraftstoffilter anordnen, wenn die Bypass-Leitung und der durch den Kraftstoffilter führende Bereich der Vorlaufleitung jeweils einen Anschluß auf der Außenseite des Kraftstoffbehälters aufweisen und wenn die Bypass-Leitung einen Blindverschluß hat. Durch diese Gestaltung wird ein Entweichen von Kraftstoff in die Umwelt während der gesamten Betriebsdauer des innerhalb des Kraftstoffbehälters angeordneten Kraftstoffilters besonders gering gehalten. Um die Belastung der Umwelt mit Kraftstoff besonders gering zu halten, können selbstverständlich auch mehrere Kraftstoffilter in dem Kraftstoffbehälter angeordnet sein. Die mit dem Blindverschluß versehene Bypass-Leitung dient ausschließlich dazu, bei einem Zusetzen aller im Kraftstoffbehälter angeordneter Kraftstoffilter ein Auswechseln des Kraftstoffbehälters zu vermeiden.If the fuel filter is clogged with dirt, the outside of the fuel tank another Position the fuel filter if the bypass line and the area of the supply line leading through the fuel filter one connection on the outside of each Have fuel tank and if the bypass line has a blind closure. With this design, a Escape of fuel into the environment throughout Operating time of the inside the fuel tank arranged fuel filter kept particularly low. To fuel the environment in particular can of course also be kept low multiple fuel filters arranged in the fuel tank his. The bypass line provided with the blind plug serves only when all are clogged Fuel filter arranged in the fuel tank to avoid changing the fuel tank.

Die Mittel zum Verschließen und Freigeben der Bypass-Leitung gestalten sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung konstruktiv besonders einfach, wenn sie ein in der Vorlaufleitung angeordnetes Umschaltventil aufweisen.The means for closing and releasing the bypass line are designed according to another advantageous Further development of the invention is structurally particularly simple, if they have a changeover valve arranged in the supply line exhibit.

Das Umschaltventil kann beispielsweise manuell betätigt werden, wenn die Förderung von Kraftstoff ausbleibt. Eine spontane Unterbrechung der Förderung von Kraftstoff läßt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach durch Mittel zur Betätigung des Umschaltventils nach einer vorgesehenen Zeitspanne oder einem vorgesehenen Kilometerstand des Kraftfahrzeuges vermeiden. The changeover valve can be operated manually, for example if there is no fuel supply. A spontaneous interruption of fuel delivery leaves according to another advantageous development of the Invention simply by means of actuating the changeover valve after a scheduled period of time or Avoid the intended mileage of the motor vehicle.

Die Steuerung der Mittel zum Verschließen und Freigeben der Bypass-Leitung erfordert einen besonders geringen baulichen Aufwand, wenn die Mittel zum Verschließen und Freigeben der Bypass-Leitung von dem Druck vor dem Kraftstoffilter ansteuerbar sind.The control of the means for locking and releasing the bypass line requires a particularly low one construction effort if the means to close and Release the bypass line from the pressure upstream of the fuel filter are controllable.

Das Umschaltventil gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung konstruktiv besonders einfach, wenn es einen längsverschieblich gestalteten Schließkörper aufweist.The changeover valve is designed according to another advantageous further development of the invention is particularly constructive easy if it's a longitudinally slidable Has closing body.

Die Steuerung des Umschaltventils kann beispielsweise manuell oder elektrisch gesteuert erfolgen. Die Ansteuerung des Umschaltventils erfordert jedoch gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einen besonders geringen Aufwand, wenn die Bewegung des Schließkörpers in Abhängigkeit des Druckes der Förderpumpe steuerbar ist.The switching valve can be controlled manually, for example or electrically controlled. The control of the changeover valve however requires according to another advantageous development of the invention a particularly little effort if the movement of the closing body in Dependence of the pressure of the feed pump is controllable.

Das Umschaltventil läßt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung mit besonders geringem baulichen Aufwand elektrisch oder manuell ansteuern, wenn das Umschaltventil einen drehbaren Schließkörper aufweist.The switching valve can be advantageous according to another Development of the invention with particularly little Control construction effort electrically or manually, if the changeover valve has a rotatable closing body.

Die Erfindung läßt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind mehrere davon in der Zeichnung dargestellt und werden nachfolgend beschrieben. Diese zeigt in

Fig.1
eine schematische Darstellung einer erfindungsgemäßen Fördereinrichtung mit einem einzigen Kraftstoffilter,
Fig.2
eine weitere Ausführungsform der erfindungsgemäßen Fördereinrichtung mit abwechselnd umschaltbaren Kraftstoffiltern,
Fig.3
eine weitere Ausführungsform der erfindungsgemäßen Fördereinrichtung mit einzeln ansteuerbaren Kraftstoffiltern,
Fig.4
eine Schnittdarstellung durch ein Umschaltventil der Fördereinrichtung aus Figur 2 oder 3,
Fig.5
ein druckbetätigtes Umschaltventil der Fördereinrichtung aus Figur 3,
Fig.6
eine weitere Darstellung eines Umschaltventils der Fördereinrichtung aus Figur 2 oder 3.
The invention allows numerous embodiments. To further clarify its basic principle, several of them are shown in the drawing and are described below. This shows in
Fig.1
1 shows a schematic illustration of a delivery device according to the invention with a single fuel filter,
Fig.2
another embodiment of the delivery device according to the invention with alternately switchable fuel filters,
Figure 3
another embodiment of the delivery device according to the invention with individually controllable fuel filters,
Figure 4
3 shows a sectional illustration through a changeover valve of the conveying device from FIG. 2 or 3,
Figure 5
3 shows a pressure-actuated changeover valve of the conveying device from FIG. 3,
Figure 6
a further illustration of a changeover valve of the conveyor device from FIG. 2 or 3.

Figur 1 zeigt einen oberen Teilbereich eines Kraftstoffbehälters 1 mit einer Fördereinrichtung 2. Die Fördereinrichtung 2 weist eine Förderpumpe 3 zum Fördern von Kraftstoff in eine zu einer nicht dargestellten Brennkraftmaschine führende Vorlaufleitung 4 auf. Die Vorlaufleitung 4 durchdringt einen in eine Montageöffnung 5 eingesetzten Flansch 6. Innerhalb der Vorlaufleitung 4 ist ein Kraftstoffilter 7 angeordnet. Der Kraftstoffilter 7 ist parallel zu einer bis zu einem auf der Außenseite des Flansches 6 befindlichen Blindverschluß 8 geführten Bypass-Leitung 9 angeordnet.Figure 1 shows an upper portion of a fuel tank 1 with a conveyor 2. The conveyor 2 has a feed pump 3 for conveying Fuel into an internal combustion engine, not shown leading flow line 4. The lead pipe 4 penetrates one inserted into an assembly opening 5 Flange 6. Inside the flow line 4 is a fuel filter 7 is arranged. The fuel filter 7 is parallel to one to one on the outside of the Flange 6 located blind closure 8 guided bypass line 9 arranged.

Nach einem Zusetzten des Kraftstoffilters 7 mit Schmutz kann der Blindverschluß 8 geöffnet und der außerhalb des Kraftstoffbehälters 1 befindliche Bereich der Vorlaufleitung 4 an der um den Kraftstoffilter 7 vorbeigeführten Bypass-Leitung 9 angeschlossen werden. Zusätzlich kann auf der Außenseite des Flansches 6 ein in der Zeichnung strichpunktiert dargestellter Kraftstoffilter 10 montiert werden. Der durch den innerhalb des Kraftstoffbehälters 1 angeordneten Kraftstoffilter 7 hindurchgeführte Bereich der Vorlaufleitung 4 muß dann selbstverständlich verschlossen werden. Hierdurch wird der von dem Schmutz zugesetzte Kraftstoffilter 7 von dem Kraftstoff umströmt. Hierfür ist es nicht erforderlich, den Flansch 6 von dem Kraftstoffbehälter 1 zu trennen. Der Flansch 6 kann daher beispielsweise mit dem Kraftstoffbehälter 1 gasdicht verschweißt oder verklebt werden.After clogging the fuel filter 7 with dirt can the blind fastener 8 open and the outside of the Fuel tank 1 area of the flow line 4 past the fuel filter 7 Bypass line 9 are connected. In addition can on the outside of the flange 6 in the drawing Dashed dashed fuel filter 10 mounted become. The inside of the fuel tank 1 arranged fuel filter 7 passed area the flow line 4 must then of course be closed become. This will add to the dirt The fuel filter 7 flows around the fuel. For this it is not necessary to remove the flange 6 from the Separate fuel tank 1. The flange 6 can therefore welded gas-tight to the fuel tank 1, for example or be glued.

Figur 2 zeigt eine Fördereinrichtung 11, bei der in der um den ersten Kraftstoffilter 7 herumgeführten Bypass-Leitung 9 ein zweiter Kraftstoffilter 12 angeordnet ist. In Strömungsrichtung gesehen nach den Kraftstoffiltern 7, 12 ist ein Umschaltventil 13 angeordnet, welches wahlweise den einen oder den anderen Kraftstoffilter 7, 12 mit dem außerhalb des Kraftstoffbehälters befindlichen Bereich der Vorlaufleitung 4 verbindet. Hierdurch kann bei einem Zusetzen des ersten Kraftstoffilters 7 das Umschaltventil 13 angesteuert werden, so daß der zweite Kraftstoffilter 12 mit Kraftstoff durchströmt wird.Figure 2 shows a conveyor 11, in which in the around the first fuel filter 7 bypass line 9 a second fuel filter 12 is arranged. Seen in the flow direction after the fuel filters 7, 12 is a switching valve 13 which is optional one or the other fuel filter 7, 12 with the area outside the fuel tank the flow line 4 connects. This can help clogging the first fuel filter 7, the switching valve 13 can be controlled so that the second Fuel filter 12 is flowed through with fuel.

Figur 3 zeigt eine Fördereinrichtung 14, bei der ein Umschaltventil 15 in Strömungsrichtung gesehen vor dem Kraftstoffilter 7 angeordnet ist. Durch ein Ansteuern des Umschaltventils läßt sich wahlweise Kraftstoff über den Kraftstoffilter 7 oder über die Bypass-Leitung 16 durch einen zweiten Kraftstoffilter 17 leiten. Alternativ dazu kann man den zweiten Kraftstoffilter 17 zunächst weglassen und diesen erst nach einem Umschalten des Umschaltventils 15 in dem außerhalb des Kraftstoffbehälters 1 befindlichen Bereich der Vorlaufleitung 4 montieren. Selbstverständlich kann die Fördereinrichtung 14 auch nicht dargestellte Mehrfach-Umschaltventile vorsehen und zwei oder mehr Bypass-Leitungen mit oder ohne darin angeordneten Kraftstoffiltern aufweisen. Figure 3 shows a conveyor 14 in which a changeover valve 15 seen in the flow direction before Fuel filter 7 is arranged. By controlling the Switching valve can optionally fuel over the Fuel filter 7 or through the bypass line 16 through direct a second fuel filter 17. Alternatively the second fuel filter 17 can initially be omitted and this only after switching the switching valve 15 in the outside of the fuel tank 1 Mount the area of the flow line 4. Of course, the conveyor 14 can also Provide multiple changeover valves, not shown, and two or more bypass lines with or without arranged therein Have fuel filters.

Figur 4 zeigt ein Umschaltventil 18, wie es in den Fördereinrichtungen 11, 14 nach den Figuren 2 und 3 eingesetzt werden kann. Das Umschaltventil 18 hat einen mit der in den Figuren 2 und 3 dargestellten Förderpumpe 3 verbundenen Anschluß 19, einen zu dem ersten Kraftstofffilter 7 führenden Anschluß 20 und einen Anschluß 21 für die Bypass-Leitung 9, 16. In dem zu der Förderpumpe 3 führenden Anschluß 19 ist ein Schließkörper 22 längsbeweglich angeordnet, welcher den Anschluß 21 der Bypass-Leitung 9, 16 wahlweise verschließen oder freigeben kann. Hierfür hat der Schließkörper 22 ein Außengewinde 23 und ist in ein Innengewinde 24 des Anschlusses 19 der Förderpumpe 3 eingedreht. Durch eine Öffnung 25 ist ein Schlitz 26 des Schließkörpers 22 zum Ansetzen eines nicht dargestellten Drehwerkzeuges zugänglich.FIG. 4 shows a changeover valve 18 as it is in the conveying devices 11, 14 used according to Figures 2 and 3 can be. The switching valve 18 has one with the feed pump 3 shown in FIGS. 2 and 3 connected port 19, one to the first fuel filter 7 leading connector 20 and a connector 21 for the bypass line 9, 16. In the to the feed pump 3rd leading connection 19, a closing body 22 is longitudinally movable arranged, which is the terminal 21 of the bypass line 9, 16 can either lock or release. For this purpose, the closing body 22 has an external thread 23 and is in an internal thread 24 of the connection 19 of the feed pump 3 screwed in. Through an opening 25 is a slot 26 of the closing body 22 for attaching a not shown Turning tool accessible.

Figur 5 zeigt ein Umschaltventil 27, wie es in der Fördereinrichtung 14 aus Figur 3 eingesetzt werden kann. Wie bei dem Umschaltventil 18 aus Figur 4 läßt sich der Anschluß 21 der Bypass-Leitung 16 von einem längsbeweglichen Schließkörper 28 freigeben oder verschließen. In der eingezeichneten Stellung ist der Schließkörper 28 von einer Feder 29 gegen einen Anschlag 30 in die den Anschluß 21 der Bypass-Leitung 16 verschließende Stellung vorgespannt. Bei einem Zusetzen des in Figur 3 dargestellten ersten Kraftstoffilters 7 steigt der Druck in dem Anschluß 19 der Förderpumpe 3 an. Der Schließkörper 28 wird anschließend von dem Druck der Förderpumpe 3 gegen die Kraft der Feder 29 bewegt, bis der Anschluß 21 der Bypass-Leitung 16 freigegeben ist.Figure 5 shows a changeover valve 27 as it is in the conveyor 14 from Figure 3 can be used. How with the changeover valve 18 from FIG. 4, the connection can be made 21 of the bypass line 16 from a longitudinally movable Release or close the closing body 28. In the drawn position is the closing body 28 of a Spring 29 against a stop 30 in the connection 21 of the bypass line 16 biased closed position. When clogging of that shown in Figure 3 first fuel filter 7, the pressure in the connection increases 19 of the feed pump 3. The closing body 28 will then by the pressure of the feed pump 3 against the Force of the spring 29 moves until the terminal 21 of the bypass line 16 is released.

Figur 6 zeigt ein Umschaltventil 31, wie es in den Fördereinrichtungen 11, 14 aus den Figuren 2 und 3 eingesetzt werden kann. Bei diesem Umschaltventil 31 ist der Anschluß 19 für die Förderpumpe 3 zentrisch angeordnet. Von diesem Anschluß 19 führen der mit dem ersten Kraftstoffilter 7 verbundene Anschluß 20 und der Anschluß 21 der Bypass-Leitung 9, 16 weg. Mittels eines drehbaren Schließkörpers 32 läßt sich der Anschluß 19 der Förderpumpe 3 wahlweise mit den beiden anderen Anschlüssen 20, 21 verbinden. Die Ansteuerung des Schließkörpers 32 kann wahlweise elektrisch oder manuell erfolgen.FIG. 6 shows a changeover valve 31 as it is in the conveying devices 11, 14 from Figures 2 and 3 used can be. In this changeover valve 31 is the Connection 19 for the feed pump 3 arranged centrally. From this connection 19 lead with the first fuel filter 7 connected connector 20 and connector 21 the bypass line 9, 16 away. By means of a rotatable Closing body 32 allows connection 19 of the feed pump 3 optionally with the other two connections 20, 21 connect. The control of the closing body 32 can either electrical or manual.

Claims (11)

  1. Delivery device for delivering fuel from a fuel tank (1) to an internal combustion engine of a motor vehicle, having a delivery pump (3) and having a flow line (4) which is connected to the delivery pump and having a fuel filter (7) which is arranged in the flow line (4), characterized in that the flow line (4) has a bypass line (9, 16) which is conducted past the fuel filter (7), and characterized in that means are provided for closing the bypass line (9, 16) in the original state and opening up the bypass line (9, 16) after a designated period of use or stage of wear of the fuel filter (7).
  2. Delivery device according to Claim 1, characterized in that a second fuel filter (12, 17) is arranged in the bypass line (9, 16).
  3. Delivery device according to Claim 1 or 2, characterized in that the means for closing and opening up the bypass line (9, 16) are intended for arrangement within the fuel tank (1).
  4. Delivery device according to at least one of the preceding claims, characterized in that the bypass line (9, 16) and that region of the flow line (4) which leads through the fuel filter (7) are brought together within the fuel tank (1).
  5. Delivery device according to at least one of the preceding claims, characterized in that the bypass line (9) and that region of the flow line (4) which leads through the fuel filter (7) each have a connection on the outside of the fuel tank (1), and characterized in that the bypass line (9) has a blind plug (8).
  6. Delivery device according to at least one of the preceding claims, characterized in that the means for closing and opening up the bypass line (9, 16) have a switch-over valve (13, 15, 18, 27, 31) arranged in the flow line (4).
  7. Delivery device according to at least one of the preceding claims, characterized by means for actuating the switch-over valve (13, 15, 18, 27, 31) after a designated time interval or a designated kilometre reading of the motor vehicle.
  8. Delivery device according to at least one of the preceding claims, characterized in that the means for closing and opening up the bypass line (16) can be activated by the pressure upstream of the fuel filter (7).
  9. Delivery device according to at least one of the preceding claims, characterized in that the switch-over valve (13, 15, 18, 27) has a closing body (22, 28) which is designed such that it can be displaced longitudinally.
  10. Delivery device according to at least one of the preceding claims, characterized in that the movement of the closing body (22, 28) can be controlled as a function of the pressure of the delivery pump (3).
  11. Delivery device according to at least one of the preceding claims, characterized in that the switch-over valve (31) has a rotatable closing body (32).
EP01104331A 2000-03-21 2001-02-23 Device for supplying fuel Expired - Lifetime EP1136689B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10013905 2000-03-21
DE10013905A DE10013905A1 (en) 2000-03-21 2000-03-21 Conveying device for conveying fuel

Publications (3)

Publication Number Publication Date
EP1136689A2 EP1136689A2 (en) 2001-09-26
EP1136689A3 EP1136689A3 (en) 2002-07-10
EP1136689B1 true EP1136689B1 (en) 2003-05-02

Family

ID=7635719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01104331A Expired - Lifetime EP1136689B1 (en) 2000-03-21 2001-02-23 Device for supplying fuel

Country Status (5)

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US (1) US6422213B2 (en)
EP (1) EP1136689B1 (en)
AU (1) AU2327201A (en)
BR (1) BR0101097A (en)
DE (2) DE10013905A1 (en)

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US6817344B2 (en) * 2002-12-30 2004-11-16 Caterpillar Inc Fuel supply system
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DE202006002952U1 (en) * 2006-02-22 2007-07-05 Mann + Hummel Gmbh fluid system
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IT1403896B1 (en) * 2010-12-29 2013-11-08 Tommasi REMOTE CONTROL DEVICE TO INTERCEPT NAFTA, OIL AND WATER FILTERS, PARTICULARLY FOR THE NAVAL, INDUSTRIAL AND AUTOMOTIVE SECTOR.
FR2996603B1 (en) * 2012-10-04 2014-11-14 Peugeot Citroen Automobiles Sa FUEL FILTRATION SYSTEM
SE539340C2 (en) * 2015-07-02 2017-07-11 Scania Cv Ab Fuel system for an internal combustion engine

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Also Published As

Publication number Publication date
US20010027781A1 (en) 2001-10-11
DE50100201D1 (en) 2003-06-05
DE10013905A1 (en) 2001-09-27
BR0101097A (en) 2001-11-06
US6422213B2 (en) 2002-07-23
EP1136689A3 (en) 2002-07-10
AU2327201A (en) 2001-09-27
EP1136689A2 (en) 2001-09-26

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