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EP1642019B1 - Device for supplying fuel from a reservoir to an internal combustion engine - Google Patents

Device for supplying fuel from a reservoir to an internal combustion engine Download PDF

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Publication number
EP1642019B1
EP1642019B1 EP04731127A EP04731127A EP1642019B1 EP 1642019 B1 EP1642019 B1 EP 1642019B1 EP 04731127 A EP04731127 A EP 04731127A EP 04731127 A EP04731127 A EP 04731127A EP 1642019 B1 EP1642019 B1 EP 1642019B1
Authority
EP
European Patent Office
Prior art keywords
throttle
filter
prefilter
fuel
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
EP04731127A
Other languages
German (de)
French (fr)
Other versions
EP1642019A1 (en
Inventor
Hans-Peter Braun
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1642019A1 publication Critical patent/EP1642019A1/en
Application granted granted Critical
Publication of EP1642019B1 publication Critical patent/EP1642019B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel
    • 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
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump

Definitions

  • the invention relates to a device according to the preamble of the main claim.
  • German patent application 103 03 390 For example, an apparatus for conveying fuel has already been proposed, in which a pre-filter and a throttle are provided separately in a drive line of a suction jet pump. The separate assembly of pre-filter and throttle in the treble line is complicated and expensive.
  • the DE 195 04 217 A1 shows a device for conveying fuel with a flow-fed Treb effet, which has a throttle for restricting the flow. Dirt particles from the fuel and the device can clog the throttle and thereby cause the vehicle to stall.
  • a device for conveying fuel is in US 6,474,310 given.
  • the device according to the invention with the characterizing features of the main claim has the advantage that the manufacturing cost can be reduced and the assembly of the prefilter and the throttle in the treble line is simplified by the throttle is integrally connected to a pre-filter.
  • the throttle has a throttle opening with an area that results in a circular design of a diameter of 0.6 to 1 millimeter, and the prefilter filter openings, wherein the area of a filter opening is smaller than the area of the throttle opening. This ensures that all dirt particles that could clog the throttle opening are filtered out upstream of the throttle opening.
  • the prefilter is designed as a filter pot with a filter bottom and a peripheral wall, wherein filter openings are provided in the filter bottom and / or in the peripheral wall, since in this way the largest possible filter surface is achieved, which is not susceptible to clogging.
  • the throttle is designed as a cover in which a throttle opening is provided, as this represents a particularly simple embodiment variant.
  • the filter cup and the cover are connected to one another via connecting webs, since the connecting webs provide a sufficient distance between the pre-filter and the throttle, so that both the fuel flowing over the filter bottom and the fuel flowing over the peripheral wall can flow to the throttle opening ,
  • FIG.1 shows in simplified form a device according to the invention for conveying fuel, Fig.2 on average, a throttle with integrated pre-filter and Fig. 3 a three-dimensional view of the embodiment according to Fig.2 ,
  • Fig.1 shows an inventive device for conveying fuel from a reservoir to an internal combustion engine of a motor vehicle.
  • the device according to the invention has a fuel delivery module 2 arranged in a storage container 1.
  • a fuel 3 is stored in the reservoir 1.
  • the fuel delivery module 2 consists of an example cup-shaped storage container 4, in which a feed pump 7 is arranged, the fuel sucks, for example via a filter 8 and a suction line 9 from the storage tank 4 and pressure increases via a pressure line 10 to an internal combustion engine 11 promotes.
  • the storage container 4 stores enough fuel to ensure that the fuel supply to the engine 11 is ensured by the feed pump 7, even if, for example, by cornering and consequent sloshing of the fuel in the reservoir 1, no fuel in the storage container 4 is promoted.
  • the storage container 4 is arranged with its bottom of the pot 5 near a tank bottom 6 of the reservoir 1.
  • the feed pump 7 is for example a flow pump, which is electrically driven by an actuator, for example an armature of an electric motor.
  • the filter 8 protects the device downstream of the filter 8 from coarse dirt particles contained in the fuel.
  • a check valve 14 and downstream of the check valve 14 a main filter 15 is arranged, which filters out the fine dirt particles contained in the fuel.
  • the check valve 14 prevents fuel with the delivery pump 7 is switched off from the pressure line 10 from downstream of the check valve 14 via the pressure line upstream of the check valve 14, the feed pump 7, the suction line 9 and the filter 8 back into the storage container 4. In this way, the pressure built up by the feed pump 7 in the pressure line 10 is maintained over a certain time even when the feed pump 7 is switched off.
  • a branch line 16 is provided on the pressure line 10, which opens into the storage container 4.
  • the branch line 16 has a pressure regulating valve 17.
  • the pressure regulating valve 17 opens and allows fuel to flow from the pressure line 10 via the branch line 16 into the storage container 4. In this way, the pressure in the pressure line 10 drops again below the predetermined pressure, so that the pressure control valve 17 closes and can no longer flow fuel through the branch line 16 into the storage tank 4.
  • the pressure in the pressure line 10 downstream of the check valve 14 is regulated to a constant value.
  • At least one suction jet pump 20, which conveys fuel from the storage container 1 into the storage container 4, is provided on the storage container 4.
  • a suction jet pump is for example from the DE 198 56 298 C1 the content of which is expressly intended to be part of the disclosure of this application.
  • a drive line 21 extends to a nozzle 22 of the suction jet pump 20th
  • a pre-filter 23 and downstream of the pre-filter 23, a throttle 24 is arranged.
  • the pre-filter 23 protects the throttle 24 from dirt particles that could clog the throttle 24.
  • the throttle 24 limits the volume flowing through the tapping line 21.
  • the throttle 24 is integrally connected to the prefilter 23. The prefilter 23 is thereby integrated into the throttle 24.
  • the nozzle 22 is arranged on an end of the haulage line 21 facing the storage container 1, for example clamped on or in the haulage line 21, clipped, glued or welded.
  • the nozzle 22 has a nozzle opening 28 opening into a suction chamber 27.
  • the suction chamber 27 is formed by a recess 25 in the bottom of the pot 5 and connected via a suction port 19 with the reservoir 1.
  • the suction chamber 27 is bounded by the bottom of the pot 5, the nozzle 22, the suction port 19 and a downstream of the suction chamber 27 provided mixing channel 29, starting from the suction chamber 27 for example, horizontally in the direction of the tank bottom 6 runs.
  • a suction jet pump with horizontally extending mixing channel is also referred to as horizontally arranged suction jet pump, a suction jet pump with vertically running mixing channel, however, referred to as standing arranged suction jet pump.
  • the mixing channel 29 opens at a the storage container 4 facing the end of the mixing channel 29 via another, closing in the direction of reservoir 1 check valve, for example, a shield valve 30, in the storage container 4.
  • the mixing channel 29 has at the end of the storage container 4 end, for example, a diffuser section 31st on, in which the mixing channel 29 extends in the flow direction, for example transversely to the plane of the drawing.
  • fuel is injected via the pressure line 10, the haulage line 21 and the nozzle opening 28 of the nozzle 22 as a propulsion jet into the suction chamber 27.
  • the propulsion jet entrains fuel in the flow direction upon entry into the suction chamber 27, so that a negative pressure is created in the suction chamber 27, which allows additional fuel to flow from the reservoir 1 into the suction chamber 27.
  • the fuel of the propulsion jet and the fuel entrained by the propulsion jet passes into the mixing vessel 29 via an inlet opening 37 of the mixing channel 29 and into the storage vessel 4 via a valve opening 35 of the umbrella valve 30.
  • Fig.2 shows on average the throttle with integrated pre-filter.
  • the arranged in the brake line 21 choke 24 is, for example, lid-shaped as a lid 40, wherein in the lid 40 a lid 40 penetrating the throttle opening 41 is provided.
  • the throttle opening 41 is arranged, for example, centric to the treble line 21 and has a diameter of 0.6 to 1 millimeter, for example, in a circular design, but can expressly have a different diameter and other shapes with different surface contents.
  • the area of the throttle opening 41 is selected, for example, to correspond to the area of a circular formation having a diameter of 0.6 to 1 millimeter.
  • the cover 40 has at its periphery an annular collar 44 which engages in the direction of the nozzle 22.
  • the pre-filter 23 is arranged, which, for example, is cup-shaped as a filter cup 43.
  • the filter cup 43 consists of a filter bottom 46 and a peripheral wall 47, wherein the filter bottom 46 and the peripheral wall 47 include a filter chamber 48 which is open on the side facing away from the filter bottom 46 and fluidly connected to the tapping line 21.
  • the filter bottom 46 and the peripheral wall 47 are for example flat, but may also be curved.
  • the filter bottom 46 and the cover 40 are opposite each other, wherein the filter bottom 46, for example, parallel to the cover 40 or obliquely is arranged to cover 40.
  • the filter cup 43 is, for example, quadrangular, triangular, rectangular, polygonal, circular or oval and tapers, for example, in the flow direction.
  • filter openings 49 of any shape are provided, wherein a filter opening 49 each has a smaller surface area than the throttle opening 41. This ensures that all dirt particles that could clog the throttle opening 41, in the pre-filter 23 upstream of the throttle opening 41 are filtered out.
  • the filter openings 49 have a diameter of 0.5 millimeters, for example, in a circular design. But there are also expressly circular filter openings 49 with a diameter other than 0.5 millimeters possible.
  • filter openings 49 By provided on the filter cup 43 filter openings 49, a large filter area is formed, so that the pre-filter 23 is insensitive to clogging. If dirt particles settle in or on a filter opening 49 and thereby clog, many more filter openings 49 are still permeable to fuel.
  • a disc-shaped shoulder 51 On a filter base 46 facing away from the pot edge 50 of the filter cup 43, a disc-shaped shoulder 51 is provided, which engages radially outward to a Treb effetdung 53 of the treble line 21.
  • the pre-filter 23 is flush with the shoulder 51 and the throttle 24 with the collar 44 of the lid 40 or with a collar 44 annularly circumferential sealing lip 45 to the Treb effetdung 53 of the tether 21, so that a leak, the pre-filter 23 and the throttle 24 bypasses as a bypass current is avoided.
  • the peripheral wall 47 is radially spaced from the cable wall 53.
  • the cover 40 of the throttle 24 and the cup-shaped prefilter 23 are integrally connected to each other, for example, two connecting webs 54.
  • the Connecting webs 54 extend from the upper side 42 of the cover 40, starting vertically or inclined upwards and are connected, for example, with the circumferential wall 47 and / or the filter bottom 46. By the connecting webs 54, the cover 40 is spaced with the throttle opening 41 to the filter cup 43.
  • the shoulder 51, the top 42 of the lid 40, the Treb effetswandung 53 and the peripheral wall 47 include a storage space 55 a.
  • the filter chamber 48 and the storage space 55 are fluidly connected to one another via the filter openings 49.
  • the fuel of the treble line 21 upstream of the prefilter 23 flows into the filter chamber 48, via the filter openings 49 in the filter bottom 46 and / or in the circumferential wall 47 in the storage space 55. In the storage space 55, the fuel flows in the direction of the throttle opening 41.
  • the over the filter openings 49 of the peripheral wall 47 flowing fuel has another flow path to the throttle opening 41 as the over the filter openings 49 of the filter bottom 46 flowing fuel.
  • the distance between the filter base 46 and the cover 40 must be sufficiently large.
  • the flow is constricted upstream of the throttle opening 41 and passes jet-shaped through the throttle opening 41 in the direction of the nozzle 22.
  • the throttle opening 41 of the throttle 24 has the function of a Duchflußbeskyrs.
  • the throttle 24 with the pre-filter 23 is made for example by injection molding.
  • the throttle 24 may also be integrally joined by gluing or welding with the prefilter 23.
  • the one-piece design of the throttle 24 and the pre-filter 23, the manufacturing cost of the two parts are lowered and simplifies the assembly.
  • From the pre-filter 23 upstream of the throttle 24 dirt particles from the fuel of the brake line 21 and derived from the manufacturing process of the device dirt particles are filtered out, so that the throttle 24 is not clogged.
  • a clogged throttle 24 would cause no more fuel would be promoted by the ejector 20 into the storage tank 4, so that the level in the storage tank 4 would drop after some time and the feed pump 7 would not be supplied with sufficient fuel. Especially at low level in the reservoir 1, this would cause the vehicle to remain lying.
  • the throttle 24 with integrated pre-filter 23 is made as a separate component, in particular made of plastic, provided in the treble line 21.
  • the throttle opening 41 can be manufactured with high accuracy and without disturbing Trenngrate. Design changes for the adaptation of the flow line 21 flowing through the flow rate are therefore only required on the separate throttle 24 and not on the fuel delivery module 2 itself.
  • nozzle 22 upstream throttle 24 By the nozzle 22 upstream throttle 24, a multi-stage pressure drop is achieved, so that the throttle opening 41 of the throttle 24 and the nozzle opening 28 of the nozzle 22 can be selected to be larger than a single-stage pressure drop only at the nozzle 22 without throttle 24. In this way It is achieved that the nozzle 22 and the throttle 24 are cheaper to produce by injection molding and occurring flow noise can be reduced.
  • the throttle 24 is arranged with the pre-filter 23, for example, near the pressure line 10 and at a standing arranged suction jet pump 20, for example, near the nozzle 22.
  • Fig. 3 shows a three-dimensional view of the embodiment according to Fig.2 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Filtration Of Liquid (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Magnetic Heads (AREA)

Abstract

A fuel delivery device in which a preliminary filter and a throttle are provided in a drive line of a suction jet pump. The throttle is integrally formed with or connected to a preliminary filter to thereby reduce the manufacturing costs and simplify installation.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Vorrichtung nach der Gattung des Hauptanspruchs.The invention relates to a device according to the preamble of the main claim.

In der nicht vorveröffentlichten deutschen Patentanmeldung 103 03 390 ist bereits eine Vorrichtung zum Fördern von Kraftstoff vorgeschlagen worden, bei der ein Vorfilter und eine Drossel in einer Treibleitung einer Saugstrahlpumpe separat vorgesehen sind. Die separate Montage von Vorfilter und Drossel in der Treibleitung ist aufwendig und teuer.In the not previously published German patent application 103 03 390 For example, an apparatus for conveying fuel has already been proposed, in which a pre-filter and a throttle are provided separately in a drive line of a suction jet pump. The separate assembly of pre-filter and throttle in the treble line is complicated and expensive.

Die DE 195 04 217 A1 zeigt eine Vorrichtung zum Fördern von Kraftstoff mit einer vorlaufgespeisten Treibleitung, die zur Durchflußbegrenzung eine Drossel aufweist. Schmutzpartikel aus dem Kraftstoff und der Vorrichtung können die Drossel verstopfen und dadurch ein Liegenbleiben des Fahrzeugs verursachen. Ein weiteres Beispiel für eine Vorrichtung zum Fördern von Kraftstoff ist in US-6 474 310 gegeben.The DE 195 04 217 A1 shows a device for conveying fuel with a flow-fed Trebleitung, which has a throttle for restricting the flow. Dirt particles from the fuel and the device can clog the throttle and thereby cause the vehicle to stall. Another example of a device for conveying fuel is in US 6,474,310 given.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Vorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß die Herstellungskosten verringert werden und die Montage des Vorfilters und der Drossel in der Treibleitung vereinfacht wird, indem die Drossel einteilig mit einem Vorfilter verbunden ist.The device according to the invention with the characterizing features of the main claim has the advantage that the manufacturing cost can be reduced and the assembly of the prefilter and the throttle in the treble line is simplified by the throttle is integrally connected to a pre-filter.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Vorrichtung möglich.The measures listed in the dependent claims advantageous refinements and improvements of the main claim device are possible.

Besonders vorteilhaft ist, wenn die Drossel mit dem Vorfilter mittels Spritzguß hergestellt ist, da dies ein besonders kostengünstiges Herstellungsverfahren ist.It is particularly advantageous if the throttle is produced with the pre-filter by means of injection molding, since this is a particularly cost-effective production process.

Sehr vorteilhaft ist es, wenn die Drossel mit dem Vorfilter in die Treibleitung gepreßt, geclipst, geklebt oder geschweißt ist, da dies besonders einfache Montagelösungen sind.It is very advantageous if the throttle is pressed, clipped, glued or welded to the prefilter in the treeline, since these are particularly simple mounting solutions.

In einer vorteilhaften Ausgestaltung hat die Drossel eine Drosselöffnung mit einem Flächeninhalt, der sich bei kreisförmiger Ausbildung aus einem Durchmesser von 0,6 bis 1 Millimeter ergibt, und der Vorfilter Filteröffnungen, wobei der Flächeninhalt einer Filteröffnung jeweils kleiner ist als der Flächeninhalt der Drosselöffnung. Dadurch ist sichergestellt, daß alle Schmutzpartikel, die die Drosselöffnung verstopfen könnten, stromauf der Drosselöffnung herausgefiltert werden.In an advantageous embodiment, the throttle has a throttle opening with an area that results in a circular design of a diameter of 0.6 to 1 millimeter, and the prefilter filter openings, wherein the area of a filter opening is smaller than the area of the throttle opening. This ensures that all dirt particles that could clog the throttle opening are filtered out upstream of the throttle opening.

Auch vorteilhaft ist, wenn der Vorfilter als Filtertopf mit einem Filterboden und einer Umfangswandung ausgebildet ist, wobei in dem Filterboden und/oder in der Umfangswandung Filteröffnungen vorgesehen sind, da auf diese Weise eine möglichst große Filterfläche erzielt wird, die unanfällig gegen Verstopfen ist.It is also advantageous if the prefilter is designed as a filter pot with a filter bottom and a peripheral wall, wherein filter openings are provided in the filter bottom and / or in the peripheral wall, since in this way the largest possible filter surface is achieved, which is not susceptible to clogging.

Desweiteren vorteilhaft ist, wenn sich der Filtertopf in Strömungsrichtung verjüngt, da die Strömung auf diese Weise beschleunigt wird.Furthermore, it is advantageous if the filter bowl tapers in the flow direction, since the flow is accelerated in this way.

Darüber hinaus vorteilhaft ist, wenn die Drossel als Deckel ausgebildet ist, in dem eine Drosselöffnung vorgesehen ist, da dies eine besonders einfache Ausführungsvariante darstellt.Moreover, it is advantageous if the throttle is designed as a cover in which a throttle opening is provided, as this represents a particularly simple embodiment variant.

Vorteilhaft ist, wenn der Filtertopf und der Deckel über Verbindungsstege miteinander verbunden sind, da die Verbindungsstege einen ausreichenden Abstand zwischen dem Vorfilter und der Drossel schaffen, so daß sowohl der über den Filterboden als auch der über die Umfangswandung strömende Kraftstoff strömungsgünstig zu der Drosselöffnung gelangen kann.It is advantageous if the filter cup and the cover are connected to one another via connecting webs, since the connecting webs provide a sufficient distance between the pre-filter and the throttle, so that both the fuel flowing over the filter bottom and the fuel flowing over the peripheral wall can flow to the throttle opening ,

Außerdem vorteilhaft ist, wenn der Vorfilter mit einer Schulter und die Drossel mit einem Kragen bündig innerhalb der Treibleitung an einer Treibleitungswandung anliegen, da auf diese Weise eine Leckage des Kraftstoffs am Vorfilter und an der Drossel vorbei vermieden wird.It is also advantageous if the prefilter with a shoulder and the throttle abut flush with the inside of the treble line to a Trebleitungswandung, as in this way a leakage of the fuel on the pre-filter and the throttle is avoided over.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Fig.1 zeigt vereinfacht im Schnitt eine erfindungsgemäße Vorrichtung zum Fördern von Kraftstoff, Fig.2 im Schnitt eine Drossel mit integriertem Vorfilter und Fig. 3 eine dreidimensionale Ansicht des Ausführungsbeispiels gemäß Fig.2.An embodiment of the invention is shown in simplified form in the drawing and explained in more detail in the following description. Fig.1 shows in simplified form a device according to the invention for conveying fuel, Fig.2 on average, a throttle with integrated pre-filter and Fig. 3 a three-dimensional view of the embodiment according to Fig.2 ,

Beschreibung des AusführungsbeispielsDescription of the embodiment

Fig.1 zeigt eine erfindungsgemäße Vorrichtung zum Fördern von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine eines Kraftfahrzeugs. Fig.1 shows an inventive device for conveying fuel from a reservoir to an internal combustion engine of a motor vehicle.

Die erfindungsgemäße Vorrichtung weist ein in einem Vorratsbehälter 1 angeordnetes Kraftstofffördermodul 2 auf. In dem Vorratsbehälter 1 ist beispielsweise ein Kraftstoff 3 gespeichert.The device according to the invention has a fuel delivery module 2 arranged in a storage container 1. In the reservoir 1, for example, a fuel 3 is stored.

Das Kraftstofffördermodul 2 besteht aus einem beispielsweise topfförmigen Speicherbehälter 4, in dem eine Förderpumpe 7 angeordnet ist, die Kraftstoff beispielsweise über einen Filter 8 und eine Saugleitung 9 aus dem Speicherbehälter 4 ansaugt und druckerhöht über eine Druckleitung 10 zu einer Brennkraftmaschine 11 fördert. Der Speicherbehälter 4 bevorratet ausreichend viel Kraftstoff, damit eine Kraftstoffversorgung der Brennkraftmaschine 11 durch die Förderpumpe 7 sichergestellt ist, auch wenn, beispielsweise durch eine Kurvenfahrt und dadurch bedingte Schwappbewegungen des Kraftstoffs im Vorratsbehälter 1, kein Kraftstoff in den Speicherbehälter 4 gefördert wird. Der Speicherbehälter 4 ist mit seinem Topfboden 5 nahe einem Tankboden 6 des Vorratsbehälters 1 angeordnet.The fuel delivery module 2 consists of an example cup-shaped storage container 4, in which a feed pump 7 is arranged, the fuel sucks, for example via a filter 8 and a suction line 9 from the storage tank 4 and pressure increases via a pressure line 10 to an internal combustion engine 11 promotes. The storage container 4 stores enough fuel to ensure that the fuel supply to the engine 11 is ensured by the feed pump 7, even if, for example, by cornering and consequent sloshing of the fuel in the reservoir 1, no fuel in the storage container 4 is promoted. The storage container 4 is arranged with its bottom of the pot 5 near a tank bottom 6 of the reservoir 1.

Die Förderpumpe 7 ist beispielsweise eine Strömungspumpe, die elektrisch von einem Aktor, beispielsweise einem Anker eines Elektromotors, angetrieben wird.The feed pump 7 is for example a flow pump, which is electrically driven by an actuator, for example an armature of an electric motor.

Der Filter 8 schützt die Vorrichtung stromab des Filters 8 vor im Kraftstoff enthaltenen groben Schmutzpartikeln.The filter 8 protects the device downstream of the filter 8 from coarse dirt particles contained in the fuel.

In der Druckleitung 10 ist beispielsweise ein Rückschlagventil 14 und stromab des Rückschlagventils 14 ein Hauptfilter 15 angeordnet, der die im Kraftstoff enthaltenen feinen Schmutzpartikel herausfiltert. Das Rückschlagventil 14 verhindert, daß Kraftstoff bei abgeschalteter Förderpumpe 7 aus der Druckleitung 10 von stromab des Rückschlagventils 14 über die Druckleitung nach stromauf des Rückschlagventils 14, die Förderpumpe 7, die Saugleitung 9 und den Filter 8 in den Speicherbehälter 4 zurückläuft. Auf diese Weise bleibt der von der Förderpumpe 7 aufgebaute Druck in der Druckleitung 10 auch bei abgeschalteter Förderpumpe 7 über eine gewisse Zeit erhalten.In the pressure line 10, for example, a check valve 14 and downstream of the check valve 14, a main filter 15 is arranged, which filters out the fine dirt particles contained in the fuel. The check valve 14 prevents fuel with the delivery pump 7 is switched off from the pressure line 10 from downstream of the check valve 14 via the pressure line upstream of the check valve 14, the feed pump 7, the suction line 9 and the filter 8 back into the storage container 4. In this way, the pressure built up by the feed pump 7 in the pressure line 10 is maintained over a certain time even when the feed pump 7 is switched off.

Stromab des Hauptfilters 15 ist an der Druckleitung 10 eine Zweigleitung 16 vorgesehen, die in den Speicherbehälter 4 mündet. Die Zweigleitung 16 weist ein Druckregelventil 17 auf. Wenn der Druck in der Druckleitung 10 und damit in der Zweigleitung 16 einen vorbestimmten Druck überschreitet, öffnet das Druckregelventil 17 und läßt Kraftstoff aus der Druckleitung 10 über die Zweigleitung 16 in den Speicherbehälter 4 strömen. Auf diese Weise sinkt der Druck in der Druckleitung 10 wieder unter den vorbestimmten Druck ab, so daß das Druckregelventil 17 schließt und keinen Kraftstoff mehr über die Zweigleitung 16 in den Speicherbehälter 4 abströmen läßt. Mittels des Druckregelventils 17 wird der Druck in der Druckleitung 10 stromab des Rückschlagventils 14 auf einen konstanten Wert geregelt.Downstream of the main filter 15, a branch line 16 is provided on the pressure line 10, which opens into the storage container 4. The branch line 16 has a pressure regulating valve 17. When the pressure in the pressure line 10 and thus in the branch line 16 exceeds a predetermined pressure, the pressure regulating valve 17 opens and allows fuel to flow from the pressure line 10 via the branch line 16 into the storage container 4. In this way, the pressure in the pressure line 10 drops again below the predetermined pressure, so that the pressure control valve 17 closes and can no longer flow fuel through the branch line 16 into the storage tank 4. By means of the pressure regulating valve 17, the pressure in the pressure line 10 downstream of the check valve 14 is regulated to a constant value.

Damit der Speicherbehälter 4 nicht von der Förderpumpe 7 leer gesaugt wird, muß laufend Kraftstoff aus dem Vorratsbehälter 1 in den Speicherbehälter 4 nachströmen. Dazu ist an dem Speicherbehälter 4 wenigstens eine Saugstrahlpumpe 20 vorgesehen, die Kraftstoff aus dem Vorratsbehälter 1 in den Speicherbehälter 4 fördert.So that the storage tank 4 is not sucked empty by the feed pump 7, fuel must flow continuously from the storage tank 1 into the storage tank 4. For this purpose, at least one suction jet pump 20, which conveys fuel from the storage container 1 into the storage container 4, is provided on the storage container 4.

Eine Saugstrahlpumpe ist beispielsweise aus der DE 198 56 298 C1 bekannt, wobei deren Inhalt ausdrücklich Teil der Offenbarung dieser Anmeldung sein soll.A suction jet pump is for example from the DE 198 56 298 C1 the content of which is expressly intended to be part of the disclosure of this application.

Von der Druckleitung 10 aus, im Bereich stromab der Förderpumpe 7 und stromauf des Rückschlagventils 14, verläuft eine Treibleitung 21 zu einer Düse 22 der Saugstrahlpumpe 20.From the pressure line 10, in the region downstream of the feed pump 7 and upstream of the check valve 14, a drive line 21 extends to a nozzle 22 of the suction jet pump 20th

In der Treibleitung 21 ist ein Vorfilter 23 und stromab des Vorfilters 23 eine Drossel 24 angeordnet. Der Vorfilter 23 schützt die Drossel 24 vor Schmutzpartikeln, die die Drossel 24 verstopfen könnten. Die Drossel 24 begrenzt den über die Treibleitung 21 fließenden Volumenstrom. Erfindungsgemäß ist die Drossel 24 einteilig mit dem Vorfilter 23 verbunden. Der Vorfilter 23 ist dadurch in die Drossel 24 integriert.In the treble line 21, a pre-filter 23 and downstream of the pre-filter 23, a throttle 24 is arranged. The pre-filter 23 protects the throttle 24 from dirt particles that could clog the throttle 24. The throttle 24 limits the volume flowing through the tapping line 21. According to the invention, the throttle 24 is integrally connected to the prefilter 23. The prefilter 23 is thereby integrated into the throttle 24.

Die Düse 22 ist an einem dem Vorratsbehälter 1 zugewandten Ende der Treibleitung 21 angeordnet, beispielsweise an oder in die Treibleitung 21 geklemmt, geclipst, geklebt oder geschweißt. Die Düse 22 weist eine in einen Saugraum 27 mündende Düsenöffnung 28 auf. Der Saugraum 27 ist durch eine Einbuchtung 25 im Topfboden 5 gebildet und über eine Ansaugöffnung 19 mit dem Vorratsbehälter 1 verbunden. Der Saugraum 27 ist begrenzt durch den Topfboden 5, die Düse 22, die Ansaugöffnung 19 und einen stromab des Saugraums 27 vorgesehenen Mischkanal 29, der vom Saugraum 27 ausgehend beispielsweise horizontal in Richtung des Tankbodens 6 verläuft. Eine Saugstrahlpumpe mit horizontal verlaufendem Mischkanal wird auch als liegend angeordnete Saugstrahlpumpe, eine Saugstrahlpumpe mit vertikal verlaufendem Mischkanal dagegen als stehend angeordnete Saugstrahlpumpe bezeichnet. Der Mischkanal 29 mündet an einem dem Speicherbehälter 4 zugewandten Ende des Mischkanals 29 über ein weiteres, in Richtung Vorratsbehälter 1 schließendes Rückschlagventil, beispielsweise ein Schirmventil 30, in den Speicherbehälter 4. Der Mischkanal 29 weist an dem dem Speicherbehälter 4 zugewandten Ende beispielsweise einen Diffusorabschnitt 31 auf, in dem sich der Mischkanal 29 in Strömungsrichtung, beispielsweise quer zur Zeichenebene, erweitert.The nozzle 22 is arranged on an end of the haulage line 21 facing the storage container 1, for example clamped on or in the haulage line 21, clipped, glued or welded. The nozzle 22 has a nozzle opening 28 opening into a suction chamber 27. The suction chamber 27 is formed by a recess 25 in the bottom of the pot 5 and connected via a suction port 19 with the reservoir 1. The suction chamber 27 is bounded by the bottom of the pot 5, the nozzle 22, the suction port 19 and a downstream of the suction chamber 27 provided mixing channel 29, starting from the suction chamber 27 for example, horizontally in the direction of the tank bottom 6 runs. A suction jet pump with horizontally extending mixing channel is also referred to as horizontally arranged suction jet pump, a suction jet pump with vertically running mixing channel, however, referred to as standing arranged suction jet pump. The mixing channel 29 opens at a the storage container 4 facing the end of the mixing channel 29 via another, closing in the direction of reservoir 1 check valve, for example, a shield valve 30, in the storage container 4. The mixing channel 29 has at the end of the storage container 4 end, for example, a diffuser section 31st on, in which the mixing channel 29 extends in the flow direction, for example transversely to the plane of the drawing.

Bei Betrieb der Förderpumpe 7 wird Kraftstoff über die Druckleitung 10, die Treibleitung 21 und die Düsenöffnung 28 der Düse 22 als ein Treibstrahl in den Saugraum 27 eingespritzt. Bekannterweise reißt der Treibstrahl beim Eintritt in den Saugraum 27 Kraftstoff in Strömungsrichtung mit, so daß im Saugraum 27 ein Unterdruck entsteht, der weiteren Kraftstoff aus dem Vorratsbehälter 1 in den Saugraum 27 nachströmen läßt. Der Kraftstoff des Treibstrahls und der von dem Treibstrahl mitgerissene Kraftstoff gelangt über eine Eingangsöffnung 37 des Mischkanals.29 in den Mischkanal 29 und über eine Ventilöffnung 35 des Schirmventils 30 in den Speicherbehälter 4.During operation of the feed pump 7, fuel is injected via the pressure line 10, the haulage line 21 and the nozzle opening 28 of the nozzle 22 as a propulsion jet into the suction chamber 27. As is known, the propulsion jet entrains fuel in the flow direction upon entry into the suction chamber 27, so that a negative pressure is created in the suction chamber 27, which allows additional fuel to flow from the reservoir 1 into the suction chamber 27. The fuel of the propulsion jet and the fuel entrained by the propulsion jet passes into the mixing vessel 29 via an inlet opening 37 of the mixing channel 29 and into the storage vessel 4 via a valve opening 35 of the umbrella valve 30.

Fig.2 zeigt im Schnitt die Drossel mit integriertem Vorfilter. Fig.2 shows on average the throttle with integrated pre-filter.

Bei der Vorrichtung nach Fig.2 sind die gegenüber der Vorrichtung nach Fig.1 gleichbleibenden oder gleichwirkenden Teile durch die gleichen Bezugszeichen gekennzeichnet.In the device according to Fig.2 are the opposite to the device according to Fig.1 Constant or equivalent parts by the same reference numerals.

Die in der Treibleitung 21 angeordnete Drossel 24 ist beispielsweise deckelförmig als Deckel 40 ausgebildet, wobei in dem Deckel 40 eine den Deckel 40 durchdringende Drosselöffnung 41 vorgesehen ist. Die Drosselöffnung 41 ist beispielsweise zentrisch zur Treibleitung 21 angeordnet und hat beispielsweise bei kreisförmiger Ausbildung einen Durchmesser von 0,6 bis 1 Millimeter, kann aber ausdrücklich auch einen anderen Durchmesser und andere Formen mit anderen Flächeninhalten aufweisen. Bei den anderen Formen ist der Flächeninhalt der Drosselöffnung 41 beispielsweise so gewählt, daß er dem Flächeninhalt einer kreisförmiger Ausbildung mit einem Durchmesser von 0,6 bis 1 Millimeter entspricht.The arranged in the brake line 21 choke 24 is, for example, lid-shaped as a lid 40, wherein in the lid 40 a lid 40 penetrating the throttle opening 41 is provided. The throttle opening 41 is arranged, for example, centric to the treble line 21 and has a diameter of 0.6 to 1 millimeter, for example, in a circular design, but can expressly have a different diameter and other shapes with different surface contents. In the other forms, the area of the throttle opening 41 is selected, for example, to correspond to the area of a circular formation having a diameter of 0.6 to 1 millimeter.

Der Deckel 40 weist an seinem Umfang einen ringförmigen Kragen 44 auf, der in Richtung Düse 22 greift. An der der Förderpumpe 7 zugewandten Oberseite 42 des Deckels 40 ist der Vorfilter 23 angeordnet, der beispielsweise topfförmig als Filtertopf 43 ausgebildet ist. Der Filtertopf 43 besteht aus einem Filterboden 46 und einer Umfangswandung 47, wobei der Filterboden 46 und die Umfangswandung 47 einen Filterraum 48 einschließen, der auf der dem Filterboden 46 abgewandten Seite offen und mit der Treibleitung 21 strömungsverbunden ist. Der Filterboden 46 und die Umfangswandung 47 sind beispielsweise eben ausgebildet, können aber auch gewölbt sein. Der Filterboden 46 und der Deckel 40 liegen einander gegenüber, wobei der Filterboden 46 beispielsweise parallel zum Deckel 40 oder auch schräg zum Deckel 40 angeordnet ist. Der Filtertopf 43 ist beispielsweise viereckförmig, dreieckförmig, rechteckförmig, vieleckförmig, kreisförmig oder oval ausgeführt und verjüngt sich beispielsweise in Strömungsrichtung. In dem Filterboden 46 und/ oder in der Umfangswandung 47 des Filtertopfes 43 sind Filteröffnungen 49 beliebiger Form vorgesehen, wobei eine Filteröffnung 49 jeweils einen kleineren Flächeninhalt hat als die Drosselöffnung 41. Dadurch ist sichergestellt, daß alle Schmutzpartikel, die die Drosselöffnung 41 verstopfen könnten, im Vorfilter 23 stromauf der Drosselöffnung 41 herausgefiltert werden. Die Filteröffnungen 49 haben beispielsweise bei kreisförmiger Ausbildung einen Durchmesser von 0,5 Millimetern. Es sind aber ausdrücklich auch kreisförmige Filteröffnungen 49 mit einem anderen Durchmesser als 0,5 Millimeter möglich. Durch die am Filtertopf 43 vorgesehenen Filteröffnungen 49 wird eine große Filterfläche gebildet, so daß der Vorfilter 23 unempfindlich gegen Verstopfen ist. Wenn sich Schmutzpartikel in oder an einer Filteröffnung 49 festsetzen und dadurch verstopfen, sind immer noch viele weitere Filteröffnungen 49 durchlässig für Kraftstoff. An einem dem Filterboden 46 abgewandten Topfrand 50 des Filtertopfes 43 ist eine scheibenförmige Schulter 51 vorgesehen, die radial nach außen bis an eine Treibleitungwandung 53 der Treibleitung 21 greift. Der Vorfilter 23 liegt mit der Schulter 51 und die Drossel 24 mit dem Kragen 44 des Deckels 40 oder mit einer an dem Kragen 44 ringförmig umlaufenden Dichtlippe 45 bündig an der Treibleitungswandung 53 der Treibleitung 21 an, so daß eine Leckage, die den Vorfilter 23 und die Drossel 24 als Bypaßstrom umgeht, vermieden wird.The cover 40 has at its periphery an annular collar 44 which engages in the direction of the nozzle 22. On the upper side 42 of the cover 40 facing the delivery pump 7, the pre-filter 23 is arranged, which, for example, is cup-shaped as a filter cup 43. The filter cup 43 consists of a filter bottom 46 and a peripheral wall 47, wherein the filter bottom 46 and the peripheral wall 47 include a filter chamber 48 which is open on the side facing away from the filter bottom 46 and fluidly connected to the tapping line 21. The filter bottom 46 and the peripheral wall 47 are for example flat, but may also be curved. The filter bottom 46 and the cover 40 are opposite each other, wherein the filter bottom 46, for example, parallel to the cover 40 or obliquely is arranged to cover 40. The filter cup 43 is, for example, quadrangular, triangular, rectangular, polygonal, circular or oval and tapers, for example, in the flow direction. In the filter bottom 46 and / or in the peripheral wall 47 of the filter cup 43 filter openings 49 of any shape are provided, wherein a filter opening 49 each has a smaller surface area than the throttle opening 41. This ensures that all dirt particles that could clog the throttle opening 41, in the pre-filter 23 upstream of the throttle opening 41 are filtered out. The filter openings 49 have a diameter of 0.5 millimeters, for example, in a circular design. But there are also expressly circular filter openings 49 with a diameter other than 0.5 millimeters possible. By provided on the filter cup 43 filter openings 49, a large filter area is formed, so that the pre-filter 23 is insensitive to clogging. If dirt particles settle in or on a filter opening 49 and thereby clog, many more filter openings 49 are still permeable to fuel. On a filter base 46 facing away from the pot edge 50 of the filter cup 43, a disc-shaped shoulder 51 is provided, which engages radially outward to a Trebleitungwandung 53 of the treble line 21. The pre-filter 23 is flush with the shoulder 51 and the throttle 24 with the collar 44 of the lid 40 or with a collar 44 annularly circumferential sealing lip 45 to the Trebleitungswandung 53 of the tether 21, so that a leak, the pre-filter 23 and the throttle 24 bypasses as a bypass current is avoided.

Die Umfangswandung 47 ist radial beabstandet zu der Treibleitungswandung 53. Der Deckel 40 der Drossel 24 und der topfförmige Vorfilter 23 sind über beispielsweise zwei Verbindungsstege 54 einteilig miteinander verbunden. Die Verbindungsstege 54 verlaufen von der Oberseite 42 des Deckels 40 ausgehend senkrecht oder geneigt nach oben und sind beispielsweise mit der Umfangswandung 47 und/oder dem Filterboden 46 verbunden. Durch die Verbindungsstege 54 ist der Deckel 40 mit der Drosselöffnung 41 beabstandet zu dem Filtertopf 43. Die Schulter 51, die Oberseite 42 des Deckels 40, die Treibleitungswandung 53 und die Umfangswandung 47 schließen einen Stauraum 55 ein. Der Filterraum 48 und der Stauraum 55 sind über die Filteröffnungen 49 miteinander strömungsverbunden.The peripheral wall 47 is radially spaced from the cable wall 53. The cover 40 of the throttle 24 and the cup-shaped prefilter 23 are integrally connected to each other, for example, two connecting webs 54. The Connecting webs 54 extend from the upper side 42 of the cover 40, starting vertically or inclined upwards and are connected, for example, with the circumferential wall 47 and / or the filter bottom 46. By the connecting webs 54, the cover 40 is spaced with the throttle opening 41 to the filter cup 43. The shoulder 51, the top 42 of the lid 40, the Trebleitungswandung 53 and the peripheral wall 47 include a storage space 55 a. The filter chamber 48 and the storage space 55 are fluidly connected to one another via the filter openings 49.

Der Kraftstoff der Treibleitung 21 stromauf des Vorfilters 23 strömt in den Filterraum 48, über die Filteröffnungen 49 in dem Filterboden 46 und /oder in der Umfangswandung 47 in den Stauraum 55. Im Stauraum 55 strömt der Kraftstoff in Richtung Drosselöffnung 41. Der über die Filteröffnungen 49 der Umfangswandung 47 strömende Kraftstoff hat einen weiteren Strömungsweg zur Drosselöffnung 41 als der über die Filteröffnungen 49 des Filterbodens 46 strömende Kraftstoff. Damit der über die Filteröffnungen 49 der Umfangswandung 47 strömende Kraftstoff strömungsgünstig zur Drosselöffnung 41 gelangt, muß der Abstand zwischen dem Filterboden 46 und dem Deckel 40 ausreichend groß gewählt werden. Die Strömung wird stromauf der Drosselöffnung 41 eingeschnürt und gelangt strahlförmig durch die Drosselöffnung 41 in Richtung Düse 22. Die Drosselöffnung 41 der Drossel 24 hat die Funktion eines Duchflußbegrenzers. Durch die entsprechende Auslegung des Durchmessers der Drosselöffnung 41 wird der über die Treibleitung 21 und durch die Drosselöffnung 41 strömende Volumenstrom eingestellt.The fuel of the treble line 21 upstream of the prefilter 23 flows into the filter chamber 48, via the filter openings 49 in the filter bottom 46 and / or in the circumferential wall 47 in the storage space 55. In the storage space 55, the fuel flows in the direction of the throttle opening 41. The over the filter openings 49 of the peripheral wall 47 flowing fuel has another flow path to the throttle opening 41 as the over the filter openings 49 of the filter bottom 46 flowing fuel. In order for the fuel flowing via the filter openings 49 of the circumferential wall 47 to flow to the throttle opening 41, the distance between the filter base 46 and the cover 40 must be sufficiently large. The flow is constricted upstream of the throttle opening 41 and passes jet-shaped through the throttle opening 41 in the direction of the nozzle 22. The throttle opening 41 of the throttle 24 has the function of a Duchflußbegrenzers. By the appropriate design of the diameter of the throttle opening 41 of the flowing via the haulage line 21 and through the throttle opening 41 volume flow is adjusted.

Die Drossel 24 mit dem Vorfilter 23 ist beispielsweise mittels Spritzguß hergestellt. Die Drossel 24 kann auch mittels Kleben oder Schweißen mit dem Vorfilter 23 einteilig zusammengefügt sein. Durch die einteilige Ausbildung von der Drossel 24 und dem Vorfilter 23 werden die Herstellungskosten der beiden Teile gesenkt und die Montage vereinfacht. Von dem Vorfilter 23 stromauf der Drossel 24 werden Schmutzpartikel aus dem Kraftstoff der Treibleitung 21 und vom Herstellungsprozeß der Vorrichtung stammende Schmutzpartikel herausgefiltert, so daß die Drossel 24 nicht verstopft. Eine verstopfte Drossel 24 würde dazu führen, daß kein Kraftstoff mehr von der Saugstrahlpumpe 20 in den Speicherbehälter 4 gefördert würde, so daß der Füllstand im Speicherbehälter 4 nach gewisser Zeit absinken würde und die Förderpumpe 7 nicht mit ausreichend viel Kraftstoff versorgt wäre. Besonders bei niedrigem Füllstand im Vorratsbehälter 1 hätte dies ein Liegenbleiben des Fahrzeugs zur Folge.The throttle 24 with the pre-filter 23 is made for example by injection molding. The throttle 24 may also be integrally joined by gluing or welding with the prefilter 23. The one-piece design of the throttle 24 and the pre-filter 23, the manufacturing cost of the two parts are lowered and simplifies the assembly. From the pre-filter 23 upstream of the throttle 24 dirt particles from the fuel of the brake line 21 and derived from the manufacturing process of the device dirt particles are filtered out, so that the throttle 24 is not clogged. A clogged throttle 24 would cause no more fuel would be promoted by the ejector 20 into the storage tank 4, so that the level in the storage tank 4 would drop after some time and the feed pump 7 would not be supplied with sufficient fuel. Especially at low level in the reservoir 1, this would cause the vehicle to remain lying.

Die Drossel 24 mit integriertem Vorfilter 23 ist als separates Bauteil, insbesondere aus Kunststoff gefertigt, in der Treibleitung 21 vorgesehen. Auf diese Weise kann die Drosselöffnung 41 mit hoher Genauigkeit und ohne störende Trenngrate gefertigt werden. Konstruktive Änderungen zur Anpassung des über die Treibleitung 21 strömenden Volumenstroms sind daher nur an der separaten Drossel 24 und nicht am Kraftstofffördermodul 2 selbst erforderlich.The throttle 24 with integrated pre-filter 23 is made as a separate component, in particular made of plastic, provided in the treble line 21. In this way, the throttle opening 41 can be manufactured with high accuracy and without disturbing Trenngrate. Design changes for the adaptation of the flow line 21 flowing through the flow rate are therefore only required on the separate throttle 24 and not on the fuel delivery module 2 itself.

Durch die der Düse 22 vorgeschalteten Drossel 24 wird ein mehrstufiger Druckabfall erreicht, so daß die Drosselöffnung 41 der Drossel 24 und die Düsenöffnung 28 der Düse 22 größer gewählt werden kann als bei einem einstufigen Druckabfall nur an der Düse 22 ohne Drossel 24. Auf diese Weise wird erreicht, daß die Düse 22 und die Drossel 24 mittels Spritzguß billiger herstellbar sind und auftretende Strömungsgeräusche verringert werden.By the nozzle 22 upstream throttle 24, a multi-stage pressure drop is achieved, so that the throttle opening 41 of the throttle 24 and the nozzle opening 28 of the nozzle 22 can be selected to be larger than a single-stage pressure drop only at the nozzle 22 without throttle 24. In this way It is achieved that the nozzle 22 and the throttle 24 are cheaper to produce by injection molding and occurring flow noise can be reduced.

Bei einer liegend angeordneten Saugstrahlpumpe 20 ist die Drossel 24 mit dem Vorfilter 23 beispielsweise nahe der Druckleitung 10 und bei einer stehend angeordneten Saugstrahlpumpe 20 beispielsweise nahe der Düse 22 angeordnet.In a horizontally disposed suction jet pump 20, the throttle 24 is arranged with the pre-filter 23, for example, near the pressure line 10 and at a standing arranged suction jet pump 20, for example, near the nozzle 22.

Fig. 3 zeigt eine dreidimensionale Ansicht des Ausführungsbeispiels gemäß Fig.2. Fig. 3 shows a three-dimensional view of the embodiment according to Fig.2 ,

Claims (10)

  1. Device for conveying fuel out of a storage tank to an internal combustion engine of a motor vehicle, with a throttle arranged in a propulsion line for a suction jet pump, characterized in that the throttle (24) is connected in one part with a prefilter (23).
  2. Device according to Claim 1, characterized in that the throttle (24), together with the prefilter (23), is produced by means of injection-moulding.
  3. Device according to Claim 1, characterized in that the throttle (24), together with the prefilter (23), is pressed, snapped, glued or welded into the propulsion line.
  4. Device according to Claim 1, characterized in that the throttle (24) has a throttle orifice (41) having an area which, in a circular design, results from a diameter of 0.6 to 1 millimetre.
  5. Device according to Claim 1, characterized in that the prefilter (23) has filter orifices (49), the area of a filter orifice (49) being in each case smaller than the area of a throttle orifice (41) of the throttle (24).
  6. Device according to Claim 1, characterized in that the prefilter (23) is designed as a filter bowl (43) with a filter bottom (46) and with a circumferential wall (47), the filter orifices (49) being provided in the filter bottom (46) and/or in the circumferential wall (47).
  7. Device according to Claim 6, characterized in that the filter bowl (43) tapers in the direction of flow.
  8. Device according to Claim 1, characterized in that the throttle (24) is designed as a cover (40) in which a throttle orifice (41) is provided.
  9. Device according to Claims 6 and 8, characterized in that the filter bowl (43) and the cover (40) are connected to one another via connecting webs (54).
  10. Device according to Claim 1, characterized in that the prefilter (23) bears with a shoulder (51) and the throttle (24) with a collar (44) flush against a propulsion-line wall (53) of the propulsion line (21).
EP04731127A 2003-06-30 2004-05-05 Device for supplying fuel from a reservoir to an internal combustion engine Expired - Lifetime EP1642019B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329268A DE10329268A1 (en) 2003-06-30 2003-06-30 Device for conveying fuel from a reservoir to an internal combustion engine
PCT/DE2004/000946 WO2005001277A1 (en) 2003-06-30 2004-05-05 Device for supplying fuel from a reservoir to an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1642019A1 EP1642019A1 (en) 2006-04-05
EP1642019B1 true EP1642019B1 (en) 2010-11-10

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US (1) US7281524B2 (en)
EP (1) EP1642019B1 (en)
JP (1) JP4778421B2 (en)
AT (1) ATE487872T1 (en)
DE (2) DE10329268A1 (en)
WO (1) WO2005001277A1 (en)

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JP4616672B2 (en) * 2005-03-14 2011-01-19 カヤバ工業株式会社 Filter integrated orifice, slow return valve, hydraulic drive unit
US7690362B2 (en) * 2005-10-14 2010-04-06 Continental Automotive Systems Us, Inc. Flange mounted valve manifold
JP5896129B2 (en) * 2012-02-09 2016-03-30 三菱自動車工業株式会社 Reservoir cup device for vehicle fuel tank
DE102012210995A1 (en) 2012-06-27 2014-01-02 Robert Bosch Gmbh Jet pump for fuel transfer module for fuel tank of car, has orifice provided in housing of jet pump, and filter module for filtering fuel, where filter module is installed in supply line to close orifice provided opposite to nozzle
DE102013212267A1 (en) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Fuel delivery system with partial pressure relief valve to drive line of a suction jet pump
DE102014209097A1 (en) * 2014-05-14 2015-11-19 Robert Bosch Gmbh Device for conveying fuel for a motor vehicle
DE102015011864B4 (en) * 2015-09-10 2019-02-07 Audi Ag Suction jet pump device, suction jet pump mounting set, method for producing at least one suction jet pump device and fluid tank arrangement

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JPH0681933B2 (en) * 1986-03-13 1994-10-19 日本電装株式会社 Fuel supply pump device
FR2727159A1 (en) * 1994-11-22 1996-05-24 Marwal Systems Fuel injection and supply circuit for Diesel IC engine
DE19504217C2 (en) 1995-02-09 2002-11-14 Bosch Gmbh Robert Device for conveying fuel from a storage tank to the internal combustion engine of a motor vehicle
JPH09303232A (en) * 1996-05-09 1997-11-25 Toyota Motor Corp Injection pipe connecting structure of common rail type diesel engine
DE19740057C1 (en) * 1997-09-12 1999-01-21 Mannesmann Vdo Ag Fuel feed circuit for motor vehicle engine
JP3765170B2 (en) * 1997-10-14 2006-04-12 株式会社デンソー Fuel supply device
DE10006622A1 (en) * 2000-02-15 2001-08-16 Bosch Gmbh Robert Device for supplying a motor vehicle's internal combustion engine with fuel has a feeder unit driven by an electric motor to feed fuel from a reservoir to an internal combustion engine, also pressure-limiting and reverse flow valves.
DE10260473A1 (en) * 2002-12-21 2004-07-15 Adam Opel Ag Fuel supply system for the supply of fuel and suction jet pump therefor
DE10303390A1 (en) * 2003-01-29 2004-08-05 Robert Bosch Gmbh Arrangement for transporting fuel from tank to vehicle combustion engine, has suction jet pump mixing channel perpendicular to supply tank top at least approximately coaxially above non-return valve

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JP4778421B2 (en) 2011-09-21
WO2005001277A1 (en) 2005-01-06
DE502004011873D1 (en) 2010-12-23
JP2007506890A (en) 2007-03-22
US20070089714A1 (en) 2007-04-26
ATE487872T1 (en) 2010-11-15
US7281524B2 (en) 2007-10-16
EP1642019A1 (en) 2006-04-05
DE10329268A1 (en) 2005-01-20

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