EP1119701B1 - Device for an arrangement inside a fuel tank for supplying and filtering fuel - Google Patents

Device for an arrangement inside a fuel tank for supplying and filtering fuel Download PDF

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Publication number
EP1119701B1
EP1119701B1 EP99957849A EP99957849A EP1119701B1 EP 1119701 B1 EP1119701 B1 EP 1119701B1 EP 99957849 A EP99957849 A EP 99957849A EP 99957849 A EP99957849 A EP 99957849A EP 1119701 B1 EP1119701 B1 EP 1119701B1
Authority
EP
European Patent Office
Prior art keywords
filter
exterior housing
carrier part
pump
fuel
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
EP99957849A
Other languages
German (de)
French (fr)
Other versions
EP1119701A1 (en
Inventor
Hans Gebert
Horst Schneider
Jim Siekmann
Hans Waibel
Rüdiger Walter
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.)
Kautex Textron GmbH and Co KG
Mahle Filtersysteme GmbH
Original Assignee
Kautex Textron GmbH and Co KG
Mahle Filtersysteme GmbH
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 Kautex Textron GmbH and Co KG, Mahle Filtersysteme GmbH filed Critical Kautex Textron GmbH and Co KG
Publication of EP1119701A1 publication Critical patent/EP1119701A1/en
Application granted granted Critical
Publication of EP1119701B1 publication Critical patent/EP1119701B1/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
    • F02M37/04—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
    • F02M37/103—Mounting pumps 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
    • F02M37/18—Feeding by means of driven pumps characterised by provision of main and auxiliary pumps
    • 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
    • F02M37/34—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 by the filter structure, e.g. honeycomb, mesh or fibrous
    • 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
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • 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
    • Y10T137/794—With means for separating solid material from the fluid
    • Y10T137/7976—Plural separating elements
    • 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
    • Y10T137/794—With means for separating solid material from the fluid
    • Y10T137/8085—Hollow strainer, fluid inlet and outlet perpendicular to each other
    • 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
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural
    • Y10T137/86139—Serial
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86187—Plural tanks or compartments connected for serial flow
    • Y10T137/8622—Plural top-to-bottom connected tanks
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86292—System with plural openings, one a gas vent or access opening
    • Y10T137/86324—Tank with gas vent and inlet or outlet
    • 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
    • Y10T137/8593—Systems
    • Y10T137/86348—Tank with internally extending flow guide, pipe or conduit

Definitions

  • the invention relates to a device for an arrangement within a fuel tank with pumps and filters for conveying and filtering fuel supplying an internal combustion engine according to the preamble of patent claim 1.
  • a solution to this problem is a generic device with the characterizing features of claim 1.
  • a particularly simple and inexpensive construction of the device according to the invention is achieved in that the filters, including their inserts, are firmly integrated into the housing and support parts, in such a way that a non-destructive exchange is not possible.
  • Such filters are therefore designed as permanent filters, the means that the service life of the filter should be based on that of the tank in which the device is used. If the filter on a motor vehicle tank is to be replaced in such a device, the entire housing and carrier complex of a generic device designed according to the invention must be replaced.
  • a filter-pump device for arrangement within a fuel tank, for example of a motor vehicle has an outer housing 1 in the form of a cup closed at the bottom by a base plate 2 placed on it.
  • the closure of the base plate 2 on the outer housing 1 will be discussed in more detail below.
  • a carrier part 3 Inserted into the outer housing 1 is a carrier part 3, which is also cup-shaped and has an annular flange 4 which projects radially outward at the open end. All parts described so far are preferably made of plastic. In the exemplary embodiment described, these parts actually consist of plastic.
  • a pump unit 5 with a first and a second pump is mounted in the carrier part 3.
  • the first pump sucks Fuel through an opening 6 in the carrier part 3 and the second pump through an opening 7 in the carrier part 3. Outside the carrier part 3, the openings 6 and 7 are connected to suction spaces 8 and 9, respectively.
  • the suction chamber 8 is connected via a first filter 10 to an area outside the outer housing 1. With an arrangement of the outer housing 1 in a motor vehicle tank, this area is the tank space.
  • the suction chamber 9 is connected via a second filter 11 to the upper inner region of the outer housing 1, which is designed as an overflow container 12. Fuel overflowing from the overflow tank 12 enters the tank interior when the outer housing 1 is installed in a tank.
  • Fuel conveyed by the first pump reaches the overflow tank 12.
  • the flow path of fuel conveyed in this way is indicated in the drawing in FIG. 1 by flow arrows S.
  • Fuel delivered by the second pump of the pump unit 5 reaches the injection nozzles of an internal combustion engine, for example a motor vehicle, through a line 13 indicated by a dot-dash line.
  • the second filter 11 is constructed as follows.
  • the use of the second filter 11 is a ring filter element 14 made of sheet material folded in a zigzag shape. With one end face, this ring filter element is 14 firmly and tightly connected to the ring flange 4 of the support member 3. The connection is provided in that the ring filter element 14 is plasticized into the ring flange 4 made of plastic. The technique of such plasticizing is known per se in filters, which is why no further explanation is required. On the opposite end face, the ring filter element 14 is sealed with an annular disc 15, which is also connected to the sheet material of the ring filter element 1 via plasticization.
  • a sealing ring 16 is integrally formed on the ring disk 15 of the ring filter element 14, which sealingly engages in an annular groove 17 in the outer housing 1.
  • the structure of the first filter 10 is as follows.
  • this first filter 10 is in turn a ring filter element 18 consisting of folded sheet material, which is sealed with its one end face in a circumferentially shaped step 19 of the outer housing 1. The opposite end is sealed by a base plate 2 and also via a plasticizing connection.
  • a latching connection is provided between the bottom of the carrier part 3 and the bottom plate 2 by means of interlocking latching elements 20 on the bottom of the carrier part 3 on the one hand and the bottom plate 2 on the other.
  • a radial sealing ring 20 is provided between these two parts.
  • the base plate 2 is connected to one another via interlocking latching means 21 provided on this and the carrier part 3.
  • the carrier part 3 is anchored in the outer housing 1, since the base plate 2 is firmly connected to this housing via the ring filter element 18.
  • fuel is drawn by arrows P from the first pump of the pump unit 5 through the first filter 10 and is conveyed into the overflow tank 12.
  • the second pump of the pump unit 5 draws fuel through the second filter 11 from the overflow tank 12 and delivers this fuel under a predetermined pressure to the injection device of an internal combustion engine.
  • the function of the first filter 10 is, in particular, to filter out coarser dirt particles from the fuel before the first pump of the pump unit 5.
  • the second filter 11 is a fine-pored filter compared to the first filter 10.
  • the size of the filter surfaces of both filters 10 and 11 can be varied.
  • the filter area of the first filter can, for example, take up about two thirds and the filter area of the second one third of the total filter area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtration Of Liquid (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Description

Die Erfindung betrifft eine Einrichtung für eine Anordnung innerhalb eines Kraftstofftankes mit Pumpen und Filtern zum Fördern und Filtern von einem Verbrennungsmotor zuführendem Kraftstoff nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for an arrangement within a fuel tank with pumps and filters for conveying and filtering fuel supplying an internal combustion engine according to the preamble of patent claim 1.

Eine solche aus US-A-5,218,942 bekannte Einrichtung soll aufbau- und funktionsmäßig vereinfacht und verbessert werden. Das gleiche gilt gegenüber einer gattungsähnlichen Einrichtung nach DE 195 35 668 A.Such a device known from US-A-5,218,942 is to be simplified and improved in terms of structure and function. The same applies to a generic device according to DE 195 35 668 A.

Eine Lösung dieses Problems stellt eine gattungsgemäße Einrichtung mit den kennzeichnenden Merkmalen des Patentanspruchs 1 dar.A solution to this problem is a generic device with the characterizing features of claim 1.

Zweckmäßige und vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Appropriate and advantageous embodiments of the invention are the subject of the dependent claims.

Ein besonders einfacher und kostengünstiger Aufbau der erfindungsgemäßen Einrichtung wird dadurch erreicht, daß die Filter einschließlich ihrer Einsätze in die Gehäuse- und Trägerteile fest integriert werden und zwar in einer solchen Weise, daß ein zerstörungsfreier Austausch nicht möglich ist. Derartige Filter sind daher als Dauerfilter auszubilden, das heißt die Lebensdauer der Filter ist auf diejenige des Tankes, in die die Einrichtung eingesetzt wird, dem Prinzip nach auszulegen. Falls ein Austausch der Filter an einem Kraftfahrzeugtank bei einer solchen Einrichtung erfolgen soll, muß der gesamte Gehäuse- und Trägerkomplex einer nach der Erfindung ausgestalteten gattungsgemäßen Einrichtung ausgetauscht werden.A particularly simple and inexpensive construction of the device according to the invention is achieved in that the filters, including their inserts, are firmly integrated into the housing and support parts, in such a way that a non-destructive exchange is not possible. Such filters are therefore designed as permanent filters, the means that the service life of the filter should be based on that of the tank in which the device is used. If the filter on a motor vehicle tank is to be replaced in such a device, the entire housing and carrier complex of a generic device designed according to the invention must be replaced.

Ein nachfolgend im einzelnen erläutertes Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention explained in detail below is shown in the drawing.

Es zeigen

Fig. 1
einen Schnitt durch eine Filter-Pumpen-Einrichtung für Kraftstoff zur Anordnung innerhalb eines Kraftstofftankes,
Fig. 2
eine Ansicht der Einrichtung nach Fig. 1 von oben in Richtung des Pfeiles II,
Fig. 3
eine Ansicht der Einrichtung nach Fig. 1 von unten in Richtung des Pfeiles III,
Fig. 4
eine Ansicht eines in die Einrichtung nach Fig. 1 einsetzbaren Trägerteiles,
Fig. 5
einen Schnitt durch das Trägerteil nach Linie V-V in Fig. 4,
Fig. 6
eine Ansicht auf das Trägerteil nach dem Pfeil VI in Fig. 4,
Fig. 7
eine Ansicht auf das Trägerteil nach Fig. 6 von oben in Richtung des Pfeiles VII,
Fig. 8
eine Ansicht des Trägerteiles nach Fig. 6 von unten in Richtung des Pfeiles VIII,
Fig. 9
einen Schnitt durch eine Bodenplatte des Außengehäuses der Einrichtung nach Fig. 1 nach Linie IX-IX in Fig. 10 vor einer Befestigung innerhalb der Einrichtung nach Fig. 1,
Fig. 10
eine Ansicht auf die Bodenplatte nach Fig. 9 in Richtung des Pfeiles X.
Show it
Fig. 1
2 shows a section through a filter-pump device for fuel for arrangement within a fuel tank,
Fig. 2
1 from the top in the direction of arrow II,
Fig. 3
1 from below in the direction of arrow III,
Fig. 4
2 shows a view of a carrier part that can be inserted into the device according to FIG. 1,
Fig. 5
3 shows a section through the carrier part according to line VV in FIG. 4,
Fig. 6
4 shows a view of the carrier part according to arrow VI in FIG. 4,
Fig. 7
6 from above in the direction of arrow VII,
Fig. 8
6 from below in the direction of arrow VIII,
Fig. 9
2 shows a section through a base plate of the outer housing of the device according to FIG. 1 along line IX-IX in FIG. 10 before being fastened within the device according to FIG. 1,
Fig. 10
9 in the direction of arrow X.

Eine Filter-Pumpen-Einrichtung zur Anordnung innerhalb eines Kraftstofftankes beispielsweise eines Kraftfahrzeuges besitzt ein Außengehäuse 1 in der Form eines unten durch eine aufgesetzte Bodenplatte 2 verschlossenen Bechers. Auf den Verschluß der Bodenplatte 2 an dem Außengehäuse 1 wird weiter unten noch näher eingegangen werden.A filter-pump device for arrangement within a fuel tank, for example of a motor vehicle, has an outer housing 1 in the form of a cup closed at the bottom by a base plate 2 placed on it. The closure of the base plate 2 on the outer housing 1 will be discussed in more detail below.

In das Außengehäuse 1 eingesetzt ist ein Trägerteil 3, das ebenfalls becherförmig ausgebildet ist, und einen an dem offenen Ende nach radial außen abstehenden Ringflansch 4 besitzt. Alle bisher beschriebenen Teile bestehen vorzugsweise aus Kunststoff. Bei dem beschriebenen Ausführungsbeispiel bestehen diese Teile tatsächlich aus Kunststoff.Inserted into the outer housing 1 is a carrier part 3, which is also cup-shaped and has an annular flange 4 which projects radially outward at the open end. All parts described so far are preferably made of plastic. In the exemplary embodiment described, these parts actually consist of plastic.

In dem Trägerteil 3 gelagert ist eine Pumpeneinheit 5 mit einer ersten und einer zweiten Pumpe. Die erste Pumpe saugt Kraftstoff durch eine Öffnung 6 in dem Trägerteil 3 und die zweite Pumpe durch eine Öffnung 7 in dem Trägerteil 3 an. Außerhalb des Trägerteiles 3 sind die Öffnungen 6 und 7 mit Ansaugräumen 8 bzw. 9 verbunden.A pump unit 5 with a first and a second pump is mounted in the carrier part 3. The first pump sucks Fuel through an opening 6 in the carrier part 3 and the second pump through an opening 7 in the carrier part 3. Outside the carrier part 3, the openings 6 and 7 are connected to suction spaces 8 and 9, respectively.

Der Ansaugraum 8 ist über ein erstes Filter 10 mit einem außerhalb des Außengehäuse 1 liegenden Bereich verbunden. Dieser Bereich ist bei einer Anordnung des Außengehäuses 1 in einem Kraftfahrzeugtank der Tankraum.The suction chamber 8 is connected via a first filter 10 to an area outside the outer housing 1. With an arrangement of the outer housing 1 in a motor vehicle tank, this area is the tank space.

Der Ansaugraum 9 ist über ein zweites Filter 11 mit dem oberen Innenbereich des Außengehäuses 1 verbunden, der als ein Überlaufbehälter 12 ausgebildet ist. Aus dem Überlaufbehälter 12 überlaufender Kraftstoff gelangt bei in einem Tank eingebautem Außengehäuse 1 in den Tankinnenraum.The suction chamber 9 is connected via a second filter 11 to the upper inner region of the outer housing 1, which is designed as an overflow container 12. Fuel overflowing from the overflow tank 12 enters the tank interior when the outer housing 1 is installed in a tank.

Von der ersten Pumpe geförderter Kraftstoff gelangt in den Überlaufbehälter 12. Der Strömungsweg derart geförderten Kraftstoffes ist in der Zeichnung in Fig. 1 mit Strömungspfeilen S angedeutet.Fuel conveyed by the first pump reaches the overflow tank 12. The flow path of fuel conveyed in this way is indicated in the drawing in FIG. 1 by flow arrows S.

Von der zweiten Pumpe der Pumpeneinheit 5 geförderter Kraftstoff gelangt durch eine strichpunktiert angedeutete Leitung 13 zu den Einspritzdüsen eines Verbrennungsmotors beispielsweise eines Kraftfahrzeuges.Fuel delivered by the second pump of the pump unit 5 reaches the injection nozzles of an internal combustion engine, for example a motor vehicle, through a line 13 indicated by a dot-dash line.

Das zweite Filter 11 ist wie folgt aufgebaut.The second filter 11 is constructed as follows.

Der Einsatz des zweiten Filters 11 ist ein aus zick-zack-förmig gefaltetem Bahnenmaterial bestehendes Ringfilterelement 14. Mit seiner einen Stirnseite ist dieses Ringfilterelement 14 fest und dicht mit dem Ringflansch 4 des Trägerteiles 3 verbunden. Die Verbindung ist dadurch gegeben, daß das Ringfilterelement 14 in den aus Kunststoff bestehenden Ringflansch 4 einplastifiziert ist. Die Technik eines solchen Einplastifizierens ist bei Filtern an sich bekannt, weshalb es hierzu keiner weiteren Erläuterungen bedarf. Auf der gegenüberliegenden Stirnseite ist das Ringfilterelement 14 mit einer Ringscheibe 15 gedichtet, die ebenfalls mit dem Bahnenmaterial des Ringfilterelementes 1 über eine Plastifizierung verbunden ist.The use of the second filter 11 is a ring filter element 14 made of sheet material folded in a zigzag shape. With one end face, this ring filter element is 14 firmly and tightly connected to the ring flange 4 of the support member 3. The connection is provided in that the ring filter element 14 is plasticized into the ring flange 4 made of plastic. The technique of such plasticizing is known per se in filters, which is why no further explanation is required. On the opposite end face, the ring filter element 14 is sealed with an annular disc 15, which is also connected to the sheet material of the ring filter element 1 via plasticization.

An die Ringscheibe 15 des Ringfilterelementes 14 ist ein Dichtring 16 angeformt, der in eine Ringnut 17 in dem Außengehäuse 1 dichtend eingreift.A sealing ring 16 is integrally formed on the ring disk 15 of the ring filter element 14, which sealingly engages in an annular groove 17 in the outer housing 1.

Der Aufbau des ersten Filters 10 stellt sich wie folgt dar.The structure of the first filter 10 is as follows.

Der Einsatz dieses ersten Filters 10 ist wiederum ein aus gefaltetem Bahnenmaterial bestehendes Ringfilterelement 18, das mit seiner einen Stirnseite in eine umlaufend gestaltete Stufe 19 des Außengehäuses 1 dicht einplastifiziert ist. Die gegenüberliegende Stirnseite ist über eine Bodenplatte 2 dicht verschlossen und zwar ebenfalls über eine Plastifizierverbindung.The use of this first filter 10 is in turn a ring filter element 18 consisting of folded sheet material, which is sealed with its one end face in a circumferentially shaped step 19 of the outer housing 1. The opposite end is sealed by a base plate 2 and also via a plasticizing connection.

Um dem Trägerteil 3 innerhalb des Außengehäuses 1 eine axial fixierte Lage zu geben, ist zwischen dem Boden des Trägerteiles 3 und der Bodenplatte 2 eine Rastverbindung vorgesehen mittels ineinandergreifender Rastelemente 20 an einerseits dem Boden des Trägerteils 3 und andererseits der Bodenplatte 2.In order to give the carrier part 3 an axially fixed position within the outer housing 1, a latching connection is provided between the bottom of the carrier part 3 and the bottom plate 2 by means of interlocking latching elements 20 on the bottom of the carrier part 3 on the one hand and the bottom plate 2 on the other.

Um den Ansaugraum 9 zwischen dem Trägerteil 3 und dem Außengehäuse 1 an der Stelle, an der diese beiden Teile im unteren Bereich der Gesamteinrichtung aneinanderstoßen, dicht gestalten zu können, ist dort zwischen diesen beiden Teilen ein Radialdichtring 20 vorgesehen.In order to be able to make the suction space 9 between the carrier part 3 and the outer housing 1 tight at the point at which these two parts abut in the lower region of the overall device, a radial sealing ring 20 is provided between these two parts.

Die Bodenplatte 2 ist über an dieser und dem Trägerteil 3 vorgesehene ineinandergreifende Rastmittel 21 miteinander verbunden. Durch diese Verbindung ist das Trägerteil 3 in dem Außengehäuse 1 verankert, da die Bodenplatte 2 über das Ringfilterelement 18 fest mit diesem Gehäuse verbunden ist.The base plate 2 is connected to one another via interlocking latching means 21 provided on this and the carrier part 3. Through this connection, the carrier part 3 is anchored in the outer housing 1, since the base plate 2 is firmly connected to this housing via the ring filter element 18.

Die Funktion der vorstehend beschriebenen Filter-Pumpen-Einrichtung ist wie folgt.The function of the filter-pump device described above is as follows.

Aus dem Kraftstofftank wird durch Pfeile P angedeutet Kraftstoff von der ersten Pumpe der Pumpeneinheit 5 durch das erste Filter 10 angesaugt und in den Überlaufbehälter 12 gefördert.From the fuel tank, fuel is drawn by arrows P from the first pump of the pump unit 5 through the first filter 10 and is conveyed into the overflow tank 12.

Aus dem Überlaufbehälter 12 saugt die zweite Pumpe der Pumpeneinheit 5 Kraftstoff durch das zweite Filter 11 hindurch an und fördert diesen Kraftstoff unter vorgegebenem Druck an die Einspritzeinrichtung eines Verbrennungsmotors.The second pump of the pump unit 5 draws fuel through the second filter 11 from the overflow tank 12 and delivers this fuel under a predetermined pressure to the injection device of an internal combustion engine.

Die Funktion des ersten Filters 10 besteht insbesondere darin, gröbere Schmutzpartikel aus dem Kraftstoff noch vor der ersten Pumpe der Pumpeneinheit 5 auszufiltern. Das zweite Filter 11 ist ein gegenüber dem ersten Filter 10 feinporigeres Filter. Die Größe der Filterflächen beider Filter 10 und 11 kann variiert werden. Dabei kann die Filterfläche des ersten Filters beispielsweise etwa zwei Drittel und die Filterfläche des zweiten ein Drittel der gesamten Filterfläche einnehmen.The function of the first filter 10 is, in particular, to filter out coarser dirt particles from the fuel before the first pump of the pump unit 5. The second filter 11 is a fine-pored filter compared to the first filter 10. The size of the filter surfaces of both filters 10 and 11 can be varied. The filter area of the first filter can, for example, take up about two thirds and the filter area of the second one third of the total filter area.

Claims (7)

  1. A device with a bowl-shaped exterior housing (1) for an arrangement inside a fuel tank, provided with pumps and filters (10, 11) for conveying and filtering fuel that is fed to an internal combustion engine, whereby the fuel is pumped from the bottom region of the tank with a first pump through a first filter (10) into a collector chamber and fuel is conveyed from said collector chamber by means of a second pump through a second filter (11) to the internal combustion engine, whereby the two pumps are arranged in a pump unit (5),
    whereby
    - the collector chamber is arranged vertically above the pump unit (5) and the filters (10, 11) with respect to the fitting position of the device and is embodied as an open overflow container (12);
    - the second filter (11) is integrated in a carrier part (3) for the pump unit (5), said filter (11) being insertable in the lower region of the bowl-shaped exterior housing (1) and in this position is firmly connectable with said bowl-shaped exterior housing (1);
    - the upper region of the exterior housing (1) is configured as the overflow container (12);
    - fuel present in the overflow container (12) can flow out of it through the second filter (11) into an aspirating chamber (9) of the second pump of the pump unit (5);
    - fuel present outside the exterior housing (1) of the tank can flow through the first filter (10) to an aspirating chamber (8) of the first pump of the pump unit (5);
    characterised by the following features:
    - the filter inserts of both filters (10, 11) are arranged as a first and second ring filter element, one on top of the other, with the first filter (10) radially encompassing the lower region of the exterior housing (1), and the second filter (11) radially encompassing the upper region of the carrier part (3);
    - between an aspirating aperture of the second pump and an outlet aperture of the second filter (11) there is a closed aspirating chamber (9), closely delimited by the carrier part (3) and the exterior housing (1), with the aspirating aperture of the second pump being sealed off against a pass-through aperture (7) in the carrier part (3);
    - between an aspirating aperture of the first pump and an outlet aperture of the first filter (10) there is a closed aspirating chamber (8), closely delimited by the carrier part (3) and the exterior housing (1), with the aspirating aperture of the first pump being sealed off against a pass-through aperture (6) in the carrier part (3);
    - the pass-through apertures (6, 7) of the carrier part (3), said pass-through apertures (6, 7) being tightly connected to the aspirating apertures of the two pumps of the pump unit (5), are situated in the lower region of the exterior housing (1);
    - the carrier part (3) is bowl-shaped with a bottom, and a second filter (11) arranged in the upper exterior region, with the longitudinal region not covered by the second filter (11) being able to be slid into the exterior housing (1), with seals (16) and (20) being provided in the upper and lower region for a tight seat against the exterior housing (1).
  2. A device according to claim 1, characterised in that the filters (10, 11) are arranged coaxially, one on top of the other.
  3. A device according to claim 1 or 2, characterised in that the carrier part (3) in the lower region of the exterior housing (1) is non-positively engageable by a catch arrangement.
  4. A device according to one of the preceding claims, characterised in that the ring filter elements (14 and 18) of the filters (10 or 11 respectively) are made of web material folded in a concertina shape which at least on one face is firmly and tightly connected to a region of the carrier part (3) or the exterior housing (1) respectively.
  5. A device according to claim 4, characterised in that the ring filter element (14) of the second filter (11) comprises a cover at the face which is not directly connected to the carrier part (3), said cover being connected to the carrier part (3) only via said ring filter element (14), and with said cover being tightly connectable to the exterior housing (1).
  6. A device according to claim 4 or 5, characterised in that the face of the first ring filter element (18), said face not being directly connected to the exterior housing (1), is firmly and tightly connected to a bottom plate (2), with the centre of this bottom plate (2) forming a joined bottom of the exterior housing (1).
  7. A device according to claim 6, characterised in that, the bottom plate (2), as the bottom of the exterior housing (1), can engage the carrier part (3) by means of a catch arrangement.
EP99957849A 1998-10-09 1999-10-02 Device for an arrangement inside a fuel tank for supplying and filtering fuel Expired - Lifetime EP1119701B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19846616A DE19846616A1 (en) 1998-10-09 1998-10-09 Installation for arrangement within fuel tank with pumps and filters for delivery and filtration of fuel fed to internal combustion engine with collection chamber situated above pumps and filters
DE19846616 1998-10-09
PCT/DE1999/003189 WO2000022294A1 (en) 1998-10-09 1999-10-02 Device for an arrangement inside a fuel tank for supplying and filtering fuel

Publications (2)

Publication Number Publication Date
EP1119701A1 EP1119701A1 (en) 2001-08-01
EP1119701B1 true EP1119701B1 (en) 2002-02-27

Family

ID=7883969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99957849A Expired - Lifetime EP1119701B1 (en) 1998-10-09 1999-10-02 Device for an arrangement inside a fuel tank for supplying and filtering fuel

Country Status (5)

Country Link
US (1) US6505641B1 (en)
EP (1) EP1119701B1 (en)
DE (2) DE19846616A1 (en)
ES (1) ES2173762T3 (en)
WO (1) WO2000022294A1 (en)

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CN111608907B (en) * 2020-05-13 2021-04-27 东风汽车集团有限公司 Modularization gearbox electric oil pump

Also Published As

Publication number Publication date
ES2173762T3 (en) 2002-10-16
EP1119701A1 (en) 2001-08-01
DE19846616A1 (en) 2000-04-13
US6505641B1 (en) 2003-01-14
DE59900914D1 (en) 2002-04-04
WO2000022294A1 (en) 2000-04-20

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