EP0705971B1 - Device for feeding fuel from a fuel tank of a motor vehicle to its internal combustion engine - Google Patents

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

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Publication number
EP0705971B1
EP0705971B1 EP95112845A EP95112845A EP0705971B1 EP 0705971 B1 EP0705971 B1 EP 0705971B1 EP 95112845 A EP95112845 A EP 95112845A EP 95112845 A EP95112845 A EP 95112845A EP 0705971 B1 EP0705971 B1 EP 0705971B1
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EP
European Patent Office
Prior art keywords
fuel
container
internal combustion
combustion engine
storage tank
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
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EP95112845A
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German (de)
French (fr)
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EP0705971A1 (en
Inventor
Jim Beakley
Joe Crechiolo
John Casari
Jim Scherer
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP0705971A1 publication Critical patent/EP0705971A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M37/10Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106Feeding 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 device for conveying Fuel from a storage tank to the internal combustion engine Motor vehicle according to the preamble of claim 1.
  • Such a device is known from DE 38 27 572.
  • This device has one arranged in the storage tank Container in which a storage space and a suction space are formed are.
  • a conveyor unit is located in the container, draws the fuel from the suction chamber and to the internal combustion engine promotes.
  • There is a valve in the bottom of the container arranged by the suction chamber in a first position separated from the storage space and connected to the storage tank is. The valve is in this first position, if sufficient in the storage tank in the area of the bottom of the container Fuel is present.
  • the suction chamber is separated from the storage tank and connected to the storage space.
  • the valve In this second position the valve is located in the storage tank in the area of the There is no fuel at the bottom of the tank could suck in the conveyor.
  • the container with the bottom is formed in one piece. The container must go to the Installation conditions of the storage tank with regard to its dimensions, in particular its height, to be precisely adjusted, so that it is not possible to use for different storage tanks different installation conditions to the same container use. Rather, it is necessary in the known device a special container for each storage tank to provide, which leads to high manufacturing costs.
  • the device for conveying fuel according to the invention from a storage tank to the internal combustion engine of a motor vehicle has the advantage that the container on easily adapted to different installation conditions can be.
  • a strand profile is made by extrusion manufactured and from this the tubular part separated for the container in the required length.
  • Figure 1 shows a simplified schematic diagram a device for conveying fuel a storage tank for the internal combustion engine of a motor vehicle
  • Figure 2 shows a first embodiment of a in the storage tank arranged container with an arranged in this Conveying unit in spatial representation
  • Figure 3 a second embodiment of the container
  • Figure 4 a valve arranged in the region of the bottom of the container a first position
  • FIG. 5 the valve in a second Position.
  • FIG 1 is a device for delivering fuel from a storage tank 10 to the internal combustion engine 12 Motor vehicle shown.
  • a container 14 arranged in which a conveyor unit 16 is arranged is, which has a pressure port 18 on which one for Internal combustion engine 12 leading pressure line 20 connected is.
  • the delivery unit 16 has one electric drive motor, not shown, which drives a pump, also not shown.
  • the suction side of the delivery unit 16 is connected to a fuel filter 22 connected, which is near the bottom 24th of the storage tank 10 is located.
  • the conveyor unit 16 promotes more fuel to the engine 12 than it consumes and the excess from the engine 12 Unused fuel is sent through a return line 26 returned to the container 14.
  • FIG. 2 is a first embodiment of the container 14, in which a storage space 28 in the container 14 is formed in which the conveyor unit 16 is arranged.
  • the storage space 28 is through the return line 26 fuel flowing back constantly filled with fuel. If the storage space 28 is filled with fuel, so the overflow flows, symbolized in FIG. 2 by an arrow 30, into the storage tank 10.
  • the container 14 has one tubular part 32, which is made of fuel-resistant Plastic consists and is produced by extrusion. Near the bottom 24 of the storage tank 10 is the tubular one Part 32 closed with a bottom part 34 which is tight in the part 32 is inserted.
  • the tubular part 32 can in Cross-section have any shape, for example a round shape as shown in Figure 2.
  • the bottom part 34 is also made of fuel-resistant plastic.
  • the tubular part 32 delimits the storage space 28 and in this is also an in the longitudinal direction of the part 32 extending partial chamber 36 through a wall 38 from Storage space 28 separated.
  • the sub-chamber 36 is over a opening 40 in the bottom part 34 with the storage tank 10 connected so that the fuel in the sub-chamber 36 as well stands high, as is the case in the storage tank 10.
  • a Level transmitter has one arranged in the subchamber 36 Float 42 on which is displaceable on a rod 41 is guided and the level in the storage tank in a suitable Way on a display device in the field of vision of Vehicle driver transmits.
  • the conveyor unit 16 is in the tubular portion 32 of container 14 near bottom portion 34 arranged and fastened in a manner not shown, preferably via vibration-damping elements.
  • the storage tank 10 has an opening 44 through which the Container 14 with the conveyor assembly 16 arranged therein can be introduced.
  • the opening 44 is with a closure part 46 can be closed with which the conveyor unit 16 via electrical lines 45 and a hydraulic line 47 is connected.
  • From the closure part 46 lead outside of the storage tank 10 again electrical lines 48 for connection the delivery unit 16 with a voltage source and hydraulic lines 49 for connection to the internal combustion engine 12 from.
  • From the closure member 46 are inward the storage tank 10 from a plurality of supports 50, on which the tubular Part 32 of the container 14 is attached.
  • the pillars 50 can be inside or outside the tubular part 32 be arranged.
  • the attachment of the container 14 to the Supports 50 can, for example, by screwing Latched or otherwise flown.
  • the length of the tubular part 32 of the container 14 is due to the installation conditions of the storage tank 10 adapted so that the bottom part 34 is arranged near the bottom 24 of the storage tank 10 and the upper end of the tubular part 32 to close to that Closing part 46 reaches.
  • the tubular part 32 will of a long extruded profile in the for the installation conditions separated in the storage tank 10 required length.
  • the bottom part 34 is used to form the container 14 connected to the tubular part 32, for example pressed in, whereby for sealing between the bottom part 34 and the tubular part 32, a sealing ring 33 are used can.
  • the bottom part 34 has a cup-shaped Cylinder 51 on the one hand in the interior of the container 14 protrudes and on the other hand with its pot bottom 52 in Direction to the bottom 24 of the storage tank 10 via the bottom part 34 protrudes.
  • Cylinder 51 closes a bowl-shaped receptacle 54 in which the lower end of the roller-shaped housing the conveyor unit 16 supports.
  • a damping element 56 be arranged between the shot 54 and the housing of the conveyor unit 16 arranged.
  • the conveyor unit 16 has one Intake manifold 58 in the cup-shaped cylinder 51st protrudes, but only so far that a suction space 60 in the Cylinder 51 remains.
  • the suction space 60 is one or a plurality of openings 62 connected to the storage space 28. To do this, it must also be stated that between the tubular Part 32 of the container 14 and the conveyor 16 a gap remains free, through the exiting from the return line 26 Get fuel to the bottom part 34 in the container 14 can.
  • the pot bottom 52 has one or more openings 64, which open into the fuel filter 22.
  • a cup-shaped valve member 66 is arranged in the suction chamber is movable along the wall of the cylinder 51.
  • the Valve member 66 is arranged in the suction chamber 60 so that the bowl bottom facing the pot bottom 52 of the cylinder 51 is.
  • the bowl bottom of the valve member 66 has an opening 68 on, which is arranged so that it approximately with the opening of the suction nozzle 58 of the delivery unit 16 flees.
  • the openings 64 in the pot bottom 52 of the cylinder 51 are arranged so that they are next to the breakthrough 68 remaining remainder of the cup bottom of the valve member 66 are covered when the valve member 66 with its cup bottom rests on the pot base 52.
  • the valve member 66 shown in a first position in which it with his Cup bottom on the end face 69 of the suction nozzle 58 of the conveyor unit 16 is present.
  • valve member 66 With its cup bottom Pot bottom 52 of the cylinder 51, so that there the openings 64 are closed while the openings 62 are released are.
  • the valve member 66 is slightly heavier than the amount of fuel corresponding to its volume.
  • the cylinder 51 and the receptacle 54 for the delivery unit 16 can also be separated from the bottom part 34 as an in the container 14 inserted part may be formed.
  • the device operates as described below.
  • the storage tank 10 is filled with working Pump sucks this from the suction chamber 60 and fuel simultaneously pulls the valve member 66 into its in FIG. 4 First position shown, in which the openings 62nd are closed and the openings 64 are released.
  • the pump to be pumped flows Fuel through the fuel filter 22 through the Openings 66 in the pot bottom 52 and the opening 68 in the Napfêt in the suction chamber 60 and is there from the conveyor unit 16 sucked in and conveyed to the internal combustion engine 12.
  • the valve member 66 occupies this first position for as long as the delivery unit 16 from the suction chamber 60 fuel can suck the fuel filter 22. During this Time becomes the storage space 28 through the return line 26 fuel flowing back.
  • FIG 3 is a second embodiment of the container 114 shown, in which the valve described above is also present.
  • the container 114 also has the tubular part 132, which is made of plastic and is made by extrusion, and also from Plastic existing bottom part 134.
  • the tubular part 132 is essentially circular in cross section, however, has a recess on part of its circumference 131 on.
  • the tubular part 132 is extruded Extruded profile in the for the installation conditions of the Storage tanks 10 required length separated.
  • the fuel filter 122 is attached and between Bottom part 134 and tubular part 132 is a sealing ring 133 clamped.
  • the circumference of the tubular part 132 is a level sensor is arranged, one on an arm 140 arranged float 142, the arm 140 is pivotally mounted.
  • the level sensor is in the area the indentation 131 arranged so that it is only a little over the Extends circumference of the tubular part 132.
  • the level sensor can be anywhere along the tubular part 132 may be arranged.
  • the level sensor 136 transfers the fill level in the storage tank 10 in a more suitable manner Way arranged in the field of vision of the vehicle driver Display device.
  • the conveyor unit 116 is electrical Lines 145 and a hydraulic line 147 with connected to the closure part 146, from which outside the storage tank electric lines 148 and hydraulic lines 149 dissipate. Training in the area of the bottom part 134 arranged valve and the attachment of the container 114 on the supports 150 of the closure member 146 same as described in the first embodiment.
  • the device is a simple adjustment of the container 14,114 to storage tanks 10 with different installation conditions enables.
  • the tubular part 32, 132 can thereby always have the same cross-section and need only to be adjusted in length accordingly.
  • the level sensor can be easily connected to different Storage tanks can be adjusted by placing them in the appropriate position is attached to the tubular part 132.

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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)

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs nach der Gattung des Anspruchs 1.The invention relates to a device for conveying Fuel from a storage tank to the internal combustion engine Motor vehicle according to the preamble of claim 1.

Eine solche Vorrichtung ist durch die DE 38 27 572 bekannt. Diese Vorrichtung weist einen im Vorratstank angeordneten Behälter auf, in dem ein Speicherraum und eine Saugraum gebildet sind. Im Behälter ist ein Förderaggregat abgeordnet, das Kraftstoff aus dem Saugraum ansaugt und zur Brennkraftmaschine fördert. Von der Brennkraftmaschine führt eine Rückführleitung zum Vorratstank zurück, durch die überschüssiger, von der Brennkraftmaschine nicht verbrauchter Kraftstoff zurückfließt und in den Speicherraum des Behälters mündet. Im Bereich des Bodens des Behälters ist ein Ventil angeordnet, durch das in einer ersten Stellung der Saugraum vom Speicherraum getrennt und mit dem Vorratstank verbunden ist. In dieser ersten Stellung befindet sich das Ventil, wenn im Vorratstank im Bereich des Bodens des Behälters genügend Kraftstoff vorhanden ist. In einer zweiten Stellung des Ventils ist der Saugraum vom Vorratstank getrennt und mit dem Speicherraum verbunden. In dieser zweiten Stellung befindet sich das Ventil, wenn im Vorratstank im Bereich des Bodens des Behälters kein Kraftstoff vorhanden ist, den das Förderaggregat ansaugen könnte. Der Behälter mit dem Boden ist dabei einteilig ausgebildet. Der Behälter muß an die Einbaubedingungen des Vorratstanks hinsichtlich seiner Abmessungen, insbesondere seiner Höhe, genau angepaßt sein, so daß es nicht möglich ist, für verschiedene Vorratstanks mit unterschiedlichen Einbaubedingungen den gleichen Behälter zu verwenden. Vielmehr ist es bei der bekannten Vorrichtung erforderlich, für jeden Vorratstank einen besonderen Behälter vorzusehen, was zu hohen Fertigungskosten führt.Such a device is known from DE 38 27 572. This device has one arranged in the storage tank Container in which a storage space and a suction space are formed are. A conveyor unit is located in the container, draws the fuel from the suction chamber and to the internal combustion engine promotes. One leads from the internal combustion engine Return line to the storage tank through which excess, fuel not consumed by the internal combustion engine flows back and into the storage space of the container flows. There is a valve in the bottom of the container arranged by the suction chamber in a first position separated from the storage space and connected to the storage tank is. The valve is in this first position, if sufficient in the storage tank in the area of the bottom of the container Fuel is present. In a second position of the valve, the suction chamber is separated from the storage tank and connected to the storage space. In this second position the valve is located in the storage tank in the area of the There is no fuel at the bottom of the tank Could suck in the conveyor. The container with the bottom is formed in one piece. The container must go to the Installation conditions of the storage tank with regard to its dimensions, in particular its height, to be precisely adjusted, so that it is not possible to use for different storage tanks different installation conditions to the same container use. Rather, it is necessary in the known device a special container for each storage tank to provide, which leads to high manufacturing costs.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs hat demgegenüber den Vorteil, daß der Behälter auf einfache Weise an unterschiedliche Einbaubedingungen angepaßt werden kann. Dabei wird ein Strangprofil durch Extrudieren hergestellt und von diesem wird der rohrförmige Teil für den Behälter in der erforderlichen Länge abgetrennt.The device for conveying fuel according to the invention from a storage tank to the internal combustion engine of a motor vehicle has the advantage that the container on easily adapted to different installation conditions can be. A strand profile is made by extrusion manufactured and from this the tubular part separated for the container in the required length.

In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung angegeben.Advantageous embodiments are in the dependent claims and developments of the invention.

Zeichnungdrawing

Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 eine vereinfachte Prinzipdarstellung einer Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeugs, Figur 2 ein erstes Ausführungsbeispiel eines im Vorratstank angeordneten Behälters mit einem in diesem angeordneten Förderaggregat in raumbildlicher Darstellung, Figur 3 ein zweites Ausführungsbeispiel des Behälters, Figur 4 ein im Bereich des Bodens des Behälters angeordnetes Ventil in einer ersten Stelluung und Figur 5 das Ventil in einer zweiten Stellung.Two embodiments of the invention are in the drawing shown and in the following description explained. Figure 1 shows a simplified schematic diagram a device for conveying fuel a storage tank for the internal combustion engine of a motor vehicle, Figure 2 shows a first embodiment of a in the storage tank arranged container with an arranged in this Conveying unit in spatial representation, Figure 3 a second embodiment of the container, Figure 4 a valve arranged in the region of the bottom of the container a first position and FIG. 5 the valve in a second Position.

Beschreibung der AusführungsbeispieleDescription of the embodiments

In Figur 1 ist eine Vorrichtung zum Fördern von Kraftstoff aus einem Vorratstank 10 zur Brennkraftmaschine 12 eines Kraftfahrzeugs dargestellt. Im Vorratstank 10 ist ein Behälter 14 angeordnet, in dem ein Förderaggregat 16 angeordnet ist, das einen Druckstutzen 18 aufweist, an dem eine zur Brennkraftmaschine 12 führende Druckleitung 20 angeschlossen ist. Während des Betriebs der Brennkraftmaschine 12 fördert das Förderaggregat 16 Kraftstoff aus dem Vorratstank 10 zur Brennkraftmaschine 12. Das Förderaggregat 16 weist einen nicht näher dargestellten elektrischen Antriebsmotor auf, der eine ebenfalls nicht näher dargestellte Pumpe antreibt. Die Saugseite des Förderaggregats 16 ist an einen Kraftstoffilter 22 angeschlossen, welcher sich nahe dem Boden 24 des Vorratstanks 10 befindet. Das Förderaggregat 16 fördert mehr Kraftstoff zur Brennkraftmaschine 12 als diese verbraucht und der überschüssige, von der Brennkraftmaschine 12 nicht verbrauchte Kraftstoff wird über eine Rückführleitung 26 in den Behälter 14 zurückgeführt.In Figure 1 is a device for delivering fuel from a storage tank 10 to the internal combustion engine 12 Motor vehicle shown. In the storage tank 10 is a container 14 arranged in which a conveyor unit 16 is arranged is, which has a pressure port 18 on which one for Internal combustion engine 12 leading pressure line 20 connected is. Promotes during operation of the internal combustion engine 12 the delivery unit 16 fuel from the storage tank 10 for Internal combustion engine 12. The delivery unit 16 has one electric drive motor, not shown, which drives a pump, also not shown. The suction side of the delivery unit 16 is connected to a fuel filter 22 connected, which is near the bottom 24th of the storage tank 10 is located. The conveyor unit 16 promotes more fuel to the engine 12 than it consumes and the excess from the engine 12 Unused fuel is sent through a return line 26 returned to the container 14.

In Figur 2 ist eine erstes Ausführungsbeispiel des Behälters 14 dargestellt, bei dem im Behälter 14 ein Speicherraum 28 gebildet ist, in dem das Förderaggregat 16 angeordnet ist. Der Speicherraum 28 wird durch den durch die Rückführleitung 26 zurückströmenden Kraftstoff ständig mit Kraftstoff gefüllt. Wenn der Speicherraum 28 kraftstoffgefüllt ist, so fließt der Überlauf, in Figur 2 durch einen Pfeil 30 symbolisiert, in den Vorratstank 10. Der Behälter 14 weist einen rohrförmigen Teil 32 auf, der aus kraftstoffbeständigem Kunststoff besteht und durch Extrudieren hergestellt ist. Nahe dem Boden 24 des Vorratstanks 10 ist der rohrförmige Teil 32 mit einem Bodenteil 34 verschlossen, das dicht in den Teil 32 eingesetzt ist. Der rohrförmige Teil 32 kann im Querschnitt eine beliebige Form aufweisen, beispielsweise eine runde Form wie in Figur 2 dargesttellt. Das Bodenteil 34 besteht ebenfalls aus kraftstoffbeständigem Kunststoff. Der rohrförmige Teil 32 begrenzt den Speicherraum 28 und in diesem ist zusätzlich eine sich in Längsrichtung des Teils 32 erstreckende Teilkammer 36 durch eine Wandung 38 vom Speicherraum 28 abgetrennt. Die Teilkammer 36 ist über eine im Bodenteil 34 vorhandene Öffnung 40 mit dem Vorratstank 10 verbunden, so daß in der Teilkammer 36 der Kraftstoff ebenso hoch steht, wie dies im Vorratstank 10 der Fall ist. Ein Füllstandsgeber weist einen in der Teilkammer 36 angeordneten Schwimmer 42 auf, der an einer Stange 41 verschiebbar geführt ist und der den Füllstand im Vorratstank in geeigneter Weise auf eine Anzeigevorrichtung im Sichtbereich des Fahrzeugslenkers überträgt. Das Förderaggregat 16 ist im rohrförmigen Teil 32 des Behälters 14 nahe dem Bodenteil 34 angeordnet und in nicht näher dargestellter Weise befestigt, vorzugsweise über schwingungsdämpfende Elemente.In Figure 2 is a first embodiment of the container 14, in which a storage space 28 in the container 14 is formed in which the conveyor unit 16 is arranged. The storage space 28 is through the return line 26 fuel flowing back constantly filled with fuel. If the storage space 28 is filled with fuel, so the overflow flows, symbolized in FIG. 2 by an arrow 30, into the storage tank 10. The container 14 has one tubular part 32, which is made of fuel-resistant Plastic consists and is produced by extrusion. Near the bottom 24 of the storage tank 10 is the tubular one Part 32 closed with a bottom part 34 which is tight in the part 32 is inserted. The tubular part 32 can in Cross-section have any shape, for example a round shape as shown in Figure 2. The bottom part 34 is also made of fuel-resistant plastic. The tubular part 32 delimits the storage space 28 and in this is also an in the longitudinal direction of the part 32 extending partial chamber 36 through a wall 38 from Storage space 28 separated. The sub-chamber 36 is over a opening 40 in the bottom part 34 with the storage tank 10 connected so that the fuel in the sub-chamber 36 as well stands high, as is the case in the storage tank 10. A Level transmitter has one arranged in the subchamber 36 Float 42 on which is displaceable on a rod 41 is guided and the level in the storage tank in a suitable Way on a display device in the field of vision of Vehicle driver transmits. The conveyor unit 16 is in the tubular portion 32 of container 14 near bottom portion 34 arranged and fastened in a manner not shown, preferably via vibration-damping elements.

Der Vorratstank 10 weist eine Öffnung 44 auf, durch die der Behälter 14 mit dem in diesem angeordneten Förderaggregat 16 eingebracht werden kann. Die Öffnung 44 ist mit einem Verschlußteil 46 verschließbar, mit dem das Förderaggregat 16 über elektrische Leitungen 45 sowie eine hydraulische Leitung 47 verbunden ist. Vom Verschlußteil 46 führen außerhalb des Vorratstanks 10 wieder elektrische Leitungen 48 zur Verbindung des Förderaggregats 16 mit einer Spannungsquelle und hydraulische Leitungen 49 zur Verbindung mit der Brennkraftmaschine 12 ab. Vom Verschlußteil 46 stehen nach innen in den Vorratstank 10 mehrere Stützen 50 ab, an denen der rohrförmige Teil 32 des Behälters 14 befestigt ist. Die Stützen 50 können innerhalb oder außerhalb des rohrförmigen Teils 32 angeordnet sein. Die Befestigung des Behälters 14 an den Stützen 50 kann beispielsweise durch Verschraubung, durch Verrastung oder auf andere Weise erflogen. Die Länge des rohrförmigen Teils 32 des Behälters 14 ist an die Einbauverhältnisse des Vorratstanks 10 angepaßt, so daß das Bodenteil 34 nahe dem Boden 24 des Vorratstanks 10 angeordnet ist und das obere Ende des rohrförmigen Teils 32 bis nahe an das Verschlußteil 46 heranreicht. Der rohrförmige Teil 32 wird von einem langen extrudierten Profil in der für die Einbauverhältnisse im Vorratstank 10 erforderlichen Länge abgetrennt. Zur Bildung des Behälters 14 wird das Bodenteil 34 mit dem rohrförmigen Teil 32 verbunden, beispielsweise eingepreßt, wobei zur Abdichtung zwischen dem Bodenteil 34 und dem rohrförmigen Teil 32 ein Dichtring 33 eingesetzt werden kann.The storage tank 10 has an opening 44 through which the Container 14 with the conveyor assembly 16 arranged therein can be introduced. The opening 44 is with a closure part 46 can be closed with which the conveyor unit 16 via electrical lines 45 and a hydraulic line 47 is connected. From the closure part 46 lead outside of the storage tank 10 again electrical lines 48 for connection the delivery unit 16 with a voltage source and hydraulic lines 49 for connection to the internal combustion engine 12 from. From the closure member 46 are inward the storage tank 10 from a plurality of supports 50, on which the tubular Part 32 of the container 14 is attached. The pillars 50 can be inside or outside the tubular part 32 be arranged. The attachment of the container 14 to the Supports 50 can, for example, by screwing Latched or otherwise flown. The length of the tubular part 32 of the container 14 is due to the installation conditions of the storage tank 10 adapted so that the bottom part 34 is arranged near the bottom 24 of the storage tank 10 and the upper end of the tubular part 32 to close to that Closing part 46 reaches. The tubular part 32 will of a long extruded profile in the for the installation conditions separated in the storage tank 10 required length. The bottom part 34 is used to form the container 14 connected to the tubular part 32, for example pressed in, whereby for sealing between the bottom part 34 and the tubular part 32, a sealing ring 33 are used can.

Im Bereich des Bodenteils 34 ist im Behälter 14 ein Ventil angeordnet, das nachfolgend anhand der Figuren 4 und 5 näher erläutert wird. Das Bodenteil 34 weist einen topfförmigen Zylinder 51 auf, der einerseits in das Innere des Behälters 14 hineinragt und andererseits mit seinem Topfboden 52 in Richtung zum Boden 24 des Vorratstanks 10 über das Bodenteil 34 hinausragt. An das in den Behälter 14 ragende Ende des Zylinders 51 schließt sich eine schalenförmige Aufnahme 54 an, in der sich das untere Ende des walzenförmigen Gehäuses des Förderaggregats 16 abstützt. Zwischen der Aufnahme 54 und dem Gehäuse des Förderaggregats 16 kann ein Dämpfungselement 56 angeordnet sein. Das Förderaggregat 16 weist einen Saugstutzen 58 auf, der in den topfförmigen Zylinder 51 ragt, jedoch nur so weit, daß daß noch ein Saugraum 60 im Zylinder 51 verbleibt. Der Saugraum 60 ist über eine oder mehrere Öffnungen 62 mit dem Speicherraum 28 verbunden. Hierzu ist noch auszuführen, daß zwischen dem rohrförmigen Teil 32 des Behälters 14 und dem Förderaggregat 16 ein Spalt freibleibt, durch den aus der Rückführleitung 26 austretender Kraftstoff bis zum Bodenteil 34 im Behälter 14 gelangen kann. Der Topfboden 52 weist einen oder mehrere Durchbrüche 64 auf, die in den Kraftstoffilter 22 münden. Im Saugraum 60 ist ein napf förmiges Ventilglied 66 angeordnet, das im Saugraum entlang der Wand des Zylinders 51 bewegbar ist. Das Ventilglied 66 ist dabei so im Saugraum 60 angeordnet, daß dessen Napfboden dem Topfboden 52 des Zylinders 51 zugewandt ist. Der Napfboden des Ventilglieds 66 weist einen Durchbruch 68 auf, der so angeordnet ist, daß er annähernd mit der Öffnung des Saugstutzens 58 des Förderaggregats 16 fluchtet. Die Durchbrüche 64 im Topfboden 52 des Zylinders 51 sind so angeordnet, daß sie von dem neben dem Durchbruch 68 verbleibenden Rest des Napfbodens des Ventilglieds 66 verdeckt sind, wenn das Ventilglied 66 mit seinem Napfboden am Topfboden 52 anliegt. In Figur 4 ist das Ventilglied 66 in einer ersten Stellung dargestellt, in der es mit seinem Napfboden an der Stirnseite 69 des Saugstutzens 58 des Förderaggregats 16 anliegt. In dieser ersten Stellung werden durch das Ventilglied 66 die Öffnungen 62 verschlossen, während die Durchbrüche 64 im Topfboden 52 des Zylinders 51 freigegeben sind. In der zweiten, in Figur 5 dargestellten Stellung liegt das Ventilglied 66 mit seinem Napfboden am Topfboden 52 des Zylinders 51 an, so daß dort die Durchbrüche 64 verschlossen sind während die Öffnungen 62 freigegeben sind. Das Ventilgied 66 ist geringfügig schwerer ausgebildet als die seinem Volumen entsprechende Menge an Kraftstoff. Der Zylinder 51 sowie die Aufnahme 54 für das Förderaggregat 16 können auch getrennt vom Bodenteil 34 als ein in den Behälter 14 eingesetztes Teil ausgebildet sein. In the area of the bottom part 34 there is a valve in the container 14 arranged, the following with reference to Figures 4 and 5 is explained. The bottom part 34 has a cup-shaped Cylinder 51 on the one hand in the interior of the container 14 protrudes and on the other hand with its pot bottom 52 in Direction to the bottom 24 of the storage tank 10 via the bottom part 34 protrudes. At the end of the projecting into the container 14 Cylinder 51 closes a bowl-shaped receptacle 54 in which the lower end of the roller-shaped housing the conveyor unit 16 supports. Between the shot 54 and the housing of the conveyor unit 16 can be a damping element 56 be arranged. The conveyor unit 16 has one Intake manifold 58 in the cup-shaped cylinder 51st protrudes, but only so far that a suction space 60 in the Cylinder 51 remains. The suction space 60 is one or a plurality of openings 62 connected to the storage space 28. To do this, it must also be stated that between the tubular Part 32 of the container 14 and the conveyor 16 a gap remains free, through the exiting from the return line 26 Get fuel to the bottom part 34 in the container 14 can. The pot bottom 52 has one or more openings 64, which open into the fuel filter 22. In the suction space 60 a cup-shaped valve member 66 is arranged in the suction chamber is movable along the wall of the cylinder 51. The Valve member 66 is arranged in the suction chamber 60 so that the bowl bottom facing the pot bottom 52 of the cylinder 51 is. The bowl bottom of the valve member 66 has an opening 68 on, which is arranged so that it approximately with the opening of the suction nozzle 58 of the delivery unit 16 flees. The openings 64 in the pot bottom 52 of the cylinder 51 are arranged so that they are next to the breakthrough 68 remaining remainder of the cup bottom of the valve member 66 are covered when the valve member 66 with its cup bottom rests on the pot base 52. In Figure 4, the valve member 66 shown in a first position in which it with his Cup bottom on the end face 69 of the suction nozzle 58 of the conveyor unit 16 is present. Be in this first position the openings 62 are closed by the valve member 66 while the openings 64 in the pot bottom 52 of the cylinder 51 are released. In the second, shown in Figure 5 Position is the valve member 66 with its cup bottom Pot bottom 52 of the cylinder 51, so that there the openings 64 are closed while the openings 62 are released are. The valve member 66 is slightly heavier than the amount of fuel corresponding to its volume. The cylinder 51 and the receptacle 54 for the delivery unit 16 can also be separated from the bottom part 34 as an in the container 14 inserted part may be formed.

Im Betrieb arbeitet die Vorrichtung wie nachfolgend beschrieben. Bei gefülltem Vorratstank 10 mit arbeitender Pumpe saugt diese aus dem Saugraum 60 Kraftstoff an und zieht gleichzeitig das Ventilglied 66 in seine in Figur 4 dargestellte erste Stellung, in welcher die Öffnungen 62 verschlossen sind und die Durchbrüche 64 freigegeben sind. In dieser Stellung des Ventilglieds 66 strömt der zu fördernde Kraftstoff durch den Kraftstoffilter 22 über die Durchbrüche 66 im Topfboden 52 sowie den Durchbruch 68 im Napfboden in den Saugraum 60 und wird dort vom Förderaggregat 16 angesaugt und zur Brennkraftmaschine 12 gefördert. Diese erste Stellung nimmt das Ventilglied 66 ein, solange das Förderaggregat 16 aus dem Saugraum 60 Kraftstoff über den Kraftstoffilter 22 anzusaugen vermag. Während dieser Zeit wird der Speicherraum 28 durch den über die Rückführleitung 26 zurückströmenden Kraftstoff gefüllt.In operation, the device operates as described below. When the storage tank 10 is filled with working Pump sucks this from the suction chamber 60 and fuel simultaneously pulls the valve member 66 into its in FIG. 4 First position shown, in which the openings 62nd are closed and the openings 64 are released. In this position of the valve member 66, the pump to be pumped flows Fuel through the fuel filter 22 through the Openings 66 in the pot bottom 52 and the opening 68 in the Napfboden in the suction chamber 60 and is there from the conveyor unit 16 sucked in and conveyed to the internal combustion engine 12. The valve member 66 occupies this first position for as long as the delivery unit 16 from the suction chamber 60 fuel can suck the fuel filter 22. During this Time becomes the storage space 28 through the return line 26 fuel flowing back.

Wenn jedoch der Vorratstank 10 weitgehend entleert ist und das Kraftfahrzeug sich in einer geneigten Stellung oder in Kurvenfahrt befindet, kann es vorkommen, daß der Kraftstoffilter 22 nicht mehr in Kraftstoff eingetaucht ist. In diesem Betriebszustand ist der im Saugraum 60 bei normalem Betrieb der Vorrichtung herrschende Unterdruck nicht mehr vorhanden, so daß das Ventilglied 66 nach unten in seine zweite Stellung sinkt, in der die Durchbrüche 64 verschlossen und die Öffnungen 68 freigegeben sind. In dieser Stellung des Ventilglieds 66 ist der Saugraum 60 mit dem Speicherraum 28 gefüllt, so daß das Förderaggregat 16 aus dem Speicherraum 28 Kraftstoff ansaugen kann. Die Versorgung der Brennkraftmaschine 12 ist somit solange sichergestellt wie sich Kraftstoff im Speicherraum 28 befindet. Dabei wird das Ventilglied 66 in seiner zweiten Stellung gehalten, da auf dieses der Druck der im Speicherraum 28 vorhandenen Flüssigkeitssäule wirkt. However, if the storage tank 10 is largely empty and the motor vehicle is in an inclined position or in Cornering, it may happen that the fuel filter 22 is no longer immersed in fuel. In this operating state is that in the suction chamber 60 at normal Operation of the device prevailing negative pressure no longer present so that the valve member 66 down into its second position drops, in which the openings 64 are closed and the openings 68 are exposed. In this position of the valve member 66 is the suction space 60 with the storage space 28 filled so that the conveyor unit 16 from the Storage space 28 can suck fuel. The supply of the Internal combustion engine 12 is thus ensured as long as there is fuel in the storage space 28. It will Valve member 66 held in its second position because on this is the pressure of the liquid column present in the storage space 28 works.

In Figur 3 ist ein zweites Ausführungsbeispiel des Behälters 114 dargestellt, bei dem das vorstehend beschriebene Ventil ebenfalls vorhanden ist. Der Behälter 114 weist ebenfalls den rohrförmigen Teil 132 auf, der aus Kunststoff besteht und durch Extrudieren hergestellt ist, und das ebenfalls aus Kunststoff bestehende Bodenteil 134. Der rohrförmige Teil 132 ist im Querschnitt im wesentlichen kreisförmig ausgebildet, weist jedoch an einem Teil seines Umfangs eine Einbuchtung 131 auf. Der rohrförmige Teil 132 ist von einem extrudierten Strangprofil in der für die Einbauverhältnisse des Vorratstanks 10 erforderlichen Länge abgetrennt. Am Bodenteil 134 ist der Kraftstoffilter 122 befestigt und zwischen Bodenteil 134 und rohrförmigem Teil 132 ist ein Dichtring 133 eingespannt. Am Umfang des rohrförmigen Teils 132 ist ein Füllstandsgeber angeordnet, der einen an einem Arm 140 angeordneten Schwimmer 142 aufweist, wobei der Arm 140 schwenkbar gelagert ist. Der Füllstandsgeber ist im Bereich der Einbuchtung 131 angeordnet, so daß er nur wenig über den Umfang des rohrförmigen Teils 132 hinausragt. Der Füllstandsgeber kann an einer beliebigen Position entlang dem rohrförmigen Teil 132 angeordnet sein. Der Füllstandsgeber 136 überträgt den Füllstand im Vorratstank 10 in geeigneter Weise auf eine im Blickfeld des Fahrzeugslenkers angeordnete Anzeigevorrichtung. Das Förderaggregat 116 ist über elektrische Leitungen 145 sowie eine hydraulische Leitung 147 mit dem Verschlußteil 146 verbunden, von dem außerhalb des Vorratstanks elektrische Leitungen 148 und hydraulische Leitungen 149 abführen. Die Ausbildung des im Bereich des Bodenteils 134 angeordneten Ventils und die Befestigung des Behälters 114 an den Stützen 150 des Verschlußteils 146 ist gleich wie beim ersten Ausführungsbeispiel beschrieben.In Figure 3 is a second embodiment of the container 114 shown, in which the valve described above is also present. The container 114 also has the tubular part 132, which is made of plastic and is made by extrusion, and also from Plastic existing bottom part 134. The tubular part 132 is essentially circular in cross section, however, has a recess on part of its circumference 131 on. The tubular part 132 is extruded Extruded profile in the for the installation conditions of the Storage tanks 10 required length separated. On the bottom part 134, the fuel filter 122 is attached and between Bottom part 134 and tubular part 132 is a sealing ring 133 clamped. The circumference of the tubular part 132 is a level sensor is arranged, one on an arm 140 arranged float 142, the arm 140 is pivotally mounted. The level sensor is in the area the indentation 131 arranged so that it is only a little over the Extends circumference of the tubular part 132. The level sensor can be anywhere along the tubular part 132 may be arranged. The level sensor 136 transfers the fill level in the storage tank 10 in a more suitable manner Way arranged in the field of vision of the vehicle driver Display device. The conveyor unit 116 is electrical Lines 145 and a hydraulic line 147 with connected to the closure part 146, from which outside the storage tank electric lines 148 and hydraulic lines 149 dissipate. Training in the area of the bottom part 134 arranged valve and the attachment of the container 114 on the supports 150 of the closure member 146 same as described in the first embodiment.

Bei beiden vorstehend beschriebenen Ausführungsbeispielen der Vorrichtung ist eine einfache Anpassung des Behälters 14,114 an Vorratstanks 10 mit unterschiedlichen Einbauverhältnissen ermöglicht. Der rohrförmige Teil 32,132 kann dabei im Querschnitt immer gleich ausgebildet sein und braucht nur in seiner Länge entsprechend angepaßt zu werden. Auch der Füllstandsgeber kann in einfacher Weise an verschiedene Vorratstanks angepaßt werden, indem er an der geeigneten Position am rohrförmigen Teil 132 befestigt wird.In both embodiments described above the device is a simple adjustment of the container 14,114 to storage tanks 10 with different installation conditions enables. The tubular part 32, 132 can thereby always have the same cross-section and need only to be adjusted in length accordingly. Also the level sensor can be easily connected to different Storage tanks can be adjusted by placing them in the appropriate position is attached to the tubular part 132.

Claims (4)

  1. Device for feeding fuel from a supply tank to the internal combustion engine of a motor vehicle, with a vessel (14; 114) which is arranged in the supply tank (10) and in which there are a storage space (28) and a suction space (60), a feed assembly (16) sucking in from the suction space (60) and feeding fuel to the internal combustion engine (12), with a return conduit (26) leading from the internal combustion engine (12) to the supply tank (10) and opening into the storage space (28), and with a valve (51, 66) which is arranged in the region of the bottom (34) of the vessel (14; 114) and by means of which, in a first position, the suction space (60) is separated from the storage space (28) and connected to the supply tank (10) and by means of which, in a second position, the suction space (60) is separated from the supply tank (10) and connected to the storage space (28), characterized in that the vessel (14; 114) has a tubular part (32; 132) which consists of plastic and which is produced by extrusion and is sealingly connected to the bottom part (34; 134) arranged near the bottom (24) of the supply tank (10).
  2. Device according to Claim 1, characterized in that the bottom part (34; 143) likewise consists of plastic.
  3. Device according to Claim 1 or 2, characterized in that the supply tank (10) has an orifice (44), through which the vessel (14; 114) can be introduced into the supply tank (10) and which can be closed by means of a closure part (46), to which the tubular part (32; 132) of the vessel (14; 114) can be fastened.
  4. Device according to one of Claims 1 to 3, characterized in that the feed assembly (16; 116) is arranged in the vessel (14; 114), and in that the bottom part (34; 134) has a receptacle (54) for the feed assembly (16).
EP95112845A 1994-10-04 1995-08-16 Device for feeding fuel from a fuel tank of a motor vehicle to its internal combustion engine Expired - Lifetime EP0705971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4435508 1994-10-04
DE4435508A DE4435508A1 (en) 1994-10-04 1994-10-04 Device for conveying fuel from a storage tank to the internal combustion engine of a motor vehicle

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EP0705971A1 EP0705971A1 (en) 1996-04-10
EP0705971B1 true EP0705971B1 (en) 1998-06-10

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EP95112845A Expired - Lifetime EP0705971B1 (en) 1994-10-04 1995-08-16 Device for feeding fuel from a fuel tank of a motor vehicle to its internal combustion engine

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BR (1) BR9504274A (en)
DE (2) DE4435508A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6672288B1 (en) * 1997-08-14 2004-01-06 Robert Bosch Gmbh Supply unit
FR2779773B1 (en) * 1998-06-16 2000-09-01 Marwal Systems FUEL GAUGE AND PUMP SYSTEM FOR MOTOR VEHICLE RESERVOIR AND RESERVOIR THUS EQUIPPED
DE10208824A1 (en) * 2002-03-01 2003-09-11 Siemens Ag Fuel delivery unit
DE102004024466A1 (en) * 2004-05-14 2005-12-08 Mann + Hummel Gmbh Fuel module
DE102005000730B4 (en) 2005-01-04 2015-10-22 Continental Automotive Gmbh Fuel tank
KR100923012B1 (en) 2007-11-30 2009-10-22 쌍용자동차 주식회사 Transfer tube assembly of fuel pump module for vehicle
US10634102B2 (en) 2018-09-06 2020-04-28 Trico Group, LLC Fuel pump assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4893647A (en) * 1986-11-07 1990-01-16 Walbro Corporation In-tank fuel reservoir with reservoir fuel level control
US4869225A (en) * 1987-10-26 1989-09-26 Nippondenso Co., Ltd. Fuel supply device for vehicles
DE3827572C2 (en) 1988-08-13 1999-02-11 Bosch Gmbh Robert Device for conveying fuel from a storage tank to the internal combustion engine of a motor vehicle
US5080077A (en) * 1990-06-01 1992-01-14 General Motors Corporation Modular fuel delivery system

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DE59502481D1 (en) 1998-07-16
EP0705971A1 (en) 1996-04-10
DE4435508A1 (en) 1996-04-11
BR9504274A (en) 1996-10-01

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