EP3636477B1 - Pump device comprising a pump, a combustion engine for driving said pump and a fuel tank - Google Patents

Pump device comprising a pump, a combustion engine for driving said pump and a fuel tank Download PDF

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Publication number
EP3636477B1
EP3636477B1 EP19201860.4A EP19201860A EP3636477B1 EP 3636477 B1 EP3636477 B1 EP 3636477B1 EP 19201860 A EP19201860 A EP 19201860A EP 3636477 B1 EP3636477 B1 EP 3636477B1
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EP
European Patent Office
Prior art keywords
fuel
pump
fuel tank
combustion engine
pump device
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EP19201860.4A
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German (de)
French (fr)
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EP3636477C0 (en
EP3636477A1 (en
Inventor
Florian Sing
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Albert Ziegler GmbH
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Albert Ziegler GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—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
    • 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

Definitions

  • the invention relates to a pump device with a fire extinguishing pump, an internal combustion engine for driving the fire extinguishing pump and a fuel tank which is connected to the internal combustion engine via a fuel line, in the course of which a fuel pump is connected for conveying fuel from the fuel tank to the internal combustion engine.
  • Portable versions of such pumping devices are also known as portable pumps, which can be carried to the respective location and are not permanently installed in a vehicle, especially a fire engine.
  • the pump used in such portable pumps is a fire-fighting centrifugal pump, which can be driven by an internal combustion engine on board the portable pump.
  • portable pumps have the advantage that they can be used away from the emergency vehicle to extract water from open waters.
  • Fuel tanks of portable pumps are designed for self-sufficient operation for one hour at the nominal point. To enable further operation, refueling is required. This is done in the fire service area with standard fuel canisters. For safety reasons, the water supply must be interrupted and the engine switched off. Escaping fuel vapors and overfilling with fuel can lead to dangers or environmental pollution even when the vehicle is switched off, e.g. when engine components are hot.
  • the aim is therefore to create a pumping device of the type mentioned at the beginning which, in comparison to conventional pumping devices, can be operated for longer without interruptions and is therefore safer.
  • the aforementioned disadvantages of the prior art should be avoided.
  • the pump device is characterized in that a return line leading to the fuel tank branches off from a branch of the fuel line between the fuel pump and the combustion engine, in the course of which a jet pump is connected, the suction connection of which can be coupled or is coupled to the fuel replacement tank for sucking in fuel from a separate fuel replacement tank.
  • jet pumps for transferring fuel between fuel tanks permanently installed in vehicles are made, for example, of WO 2014/036447 A1 or EP0228176A1 known.
  • the fuel returned via the return line acts as a driving medium for the jet pump and ensures that fuel is sucked in from the fuel tank. It is possible to refuel while the pumping device is in operation. It is therefore no longer necessary to switch off the combustion engine and thus interrupt the water supply. This is a decisive advantage, especially when fighting fires.
  • the jet pump particularly preferably has a Venturi nozzle.
  • the Venturi nozzle is a relatively simple component and is therefore relatively inexpensive. Furthermore, the Venturi nozzle is reliable and relatively low-maintenance.
  • the jet pump has a jet pump housing with a propellant inlet and a propellant outlet, wherein fuel is used as the propellant.
  • the portable pump unit is a portable pump.
  • a pressure control valve is connected upstream of the return line to regulate the fuel pressure for the engine.
  • the pressure control valve can be used to regulate the fuel pressure for the engine rail.
  • the excess fuel that is not required for the engine is used as a driving medium for the jet pump.
  • a shut-off valve is arranged on the suction connection to shut off the suction connection when the fuel reserve tank is disconnected. This prevents fuel from escaping via the suction connection when the fuel reserve tank is disconnected.
  • the suction connection has a coupling interface to which the fuel replacement tank can be detachably coupled, in particular with the interposition of a suction line.
  • the shut-off valve is designed to be self-closing and assumes a shut-off position as soon as the fuel tank is uncoupled. In this embodiment, it is not necessary to actively switch the shut-off valve to the shut-off position, since the shut-off valve, in particular its valve member, is automatically transferred to the shut-off position when the fuel tank is uncoupled.
  • a fuel filter is integrated into the fuel line.
  • the fuel filter is expediently located in the line branch between the fuel pump and the combustion engine.
  • the fuel tank is assigned a level indicator and/or a level measuring device. This allows the fuel tank level to be checked and the refilling process to be initiated in good time.
  • the fuel replacement tank could remain connected to the suction connection of the jet pump and then a refilling process to be initiated automatically as soon as a certain level is undershot.
  • the shut-off valve can then be designed in such a way that the fuel tank is prevented from being overfilled with fuel by shutting off at a certain maximum level.
  • Continuous refilling would also be conceivable, in such a way that fuel is always returned via the refill line, albeit with a significantly lower flow rate, and the jet pump is therefore always in operation. and draws fuel from the reserve fuel canister, whereby the fuel level remains constant until the reserve fuel tank is empty.
  • the pump device comprises a fuel replacement tank, in particular in the form of a fuel canister.
  • FIG. 1 A preferred embodiment is shown in the drawing and is explained in more detail below.
  • the only figure in the drawing shows: a schematic representation of a preferred embodiment of the pump device according to the invention.
  • the figure shows a preferred embodiment of the pump device 11 according to the invention.
  • the main component of the pump device 11 is a fire extinguishing pump 12, which is described below as an example in the form of a fire extinguishing centrifugal pump.
  • the pump device 11 is a portable pump device 11 in the form of a so-called portable pump. In principle and not according to the invention, however, it would also be possible to use the pump device as a built-in pump, where it is then installed on board an emergency vehicle, in particular a fire engine.
  • the fire-fighting centrifugal pump which is referred to below as pump 12 for the sake of simplicity, has a pump housing (not shown) that encloses a pump chamber.
  • a pump rotor (not shown) is movably received in the pump chamber.
  • a radial impeller is expediently used as the pump rotor, which is driven by an output part, in particular an output shaft, of an internal combustion engine 13 located on board the portable pump.
  • the pump impeller sucks water or, if necessary, a water/foam mixture into the pump chamber via a suction side and releases the sucked-in water at increased pressure via a pressure side, in the case of a radial impeller, in a radial direction.
  • a pressure side in the case of a radial impeller, in a radial direction.
  • Several fire hoses can usually be connected to the pressure side, with jet pipes attached to the free ends, through which extinguishing water can be directed to the source of the fire for firefighting.
  • the combustion engine 13 can be a gasoline engine or a diesel engine.
  • the combustion engine is connected to a fuel tank 15 via a fuel line 14.
  • the fuel tank 15 is located on board the portable pump or the portable pumping device 11.
  • a fuel pump 16 is connected to the fuel line 14 to pump fuel, i.e. diesel or gasoline, from the fuel tank 15 to the combustion engine 13.
  • the fuel pump 16 is arranged outside the fuel tank 15 and a branch of the fuel line 14 arranged on a suction side of the fuel pump 16 extends into the fuel tank 15.
  • a return line 18 leading to the fuel tank 15 is branched off from a line branch 17 of the fuel line 14 between the fuel pump 16 and the internal combustion engine 13, in the course of which a jet pump 19 is switched on, the suction connection 20 of which can be or is coupled to the fuel replacement tank 21 for sucking in fuel from a fuel replacement tank 21 separate from the fuel tank 15.
  • the jet pump shown schematically in the figure as an example has a Venturi nozzle as its main component.
  • a jet pump 19 with a Venturi nozzle is relatively inexpensive because it is made up of few components.
  • the jet pump 19 also comprises a jet pump housing (not shown) which has a propellant inlet 22 and a propellant outlet 23. Fuel flowing back in the return line 18 in the direction of the fuel tank 15 serves as the propellant.
  • the fuel replacement tank which is preferably a fuel canister, is connected to the suction connection 20 of the jet pump.
  • the suction connection 20 is also assigned a shut-off valve 25, with which the suction connection 20 can be shut off when the fuel reserve tank 21 is disconnected.
  • the suction connection 20 of the jet pump 19 has a coupling interface 26 to which the suction line 24, which leads to the fuel reserve tank 21, is detachably attached.
  • shut-off valve 25 is designed to be self-closing and assumes a shut-off position as soon as the fuel replacement tank 21 is disconnected.
  • a pressure control valve 28 is connected to the return line 18 to regulate the fuel pressure in the return line 18.
  • a pressure control valve 28 is selected whose valve member is spring-loaded and which opens from a certain pre-set or pre-set pressure. The pressure on the primary side of the valve is determined and connected to the valve member in such a way that the valve may partially close if the primary pressure is too high and open further if the primary pressure is too low.
  • the spring preload of the spring the pressure can be varied so that the fuel pressure in the return line can be regulated. Excess fuel that is not required is required to operate the jet pump.
  • a fuel filter 29 is connected in the line branch 17 between the fuel pump 16 and the combustion engine 13.
  • a fill level indicator 30 or a fill level measuring device is assigned in the fuel tank 15.
  • the fuel pump 16 sucks fuel from the fuel tank 15 and presses it on the pressure side via the fuel filter 29 through the fuel line 14 to the combustion engine 13, where fuel is then used to operate the combustion engine.
  • the fire-fighting centrifugal pump on board the portable pump is driven by the combustion engine and its output shaft, which in turn sucks in extinguishing water on the suction side and releases it on the pressure side.
  • the fuel level in the fuel tank 15 can be checked using the level indicator 30. If the fuel level falls below a minimum value, the fuel tank 15 needs to be refilled, i.e. refueled. If necessary, this can be determined via an acoustic and/or optical signal.
  • the fuel canister is coupled to the coupling interface 26 via the suction line 24, with the shut-off valve 25 being switched to the open position.
  • the jet pump 19 is operated by fuel flowing back in the return line 18, which in turn sucks fuel from the fuel canister and supplies it to the fuel tank 15.
  • the shut-off valve 25 can be designed in such a way that overfilling of the fuel tank 15 is prevented by closing it at a certain fill level.
  • the fuel replacement tank 21, in particular the fuel canister is coupled to the suction connection 20 of the jet pump via the suction line 24 during operation, so that fuel is automatically and constantly conveyed from the fuel canister into the fuel tank, whereby the filling level of the fuel in the fuel tank 15 is controlled via a remains essentially constant for a certain period of time until the fuel canister is emptied.

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

Description

Die Erfindung betrifft eine Pumpeneinrichtung, mit einer Feuerlöschpumpe, einem Verbrennungsmotor zum Antrieb der Feuerlöschpumpe und einem Kraftstofftank, der mit dem Verbrennungsmotor über eine Kraftstoffleitung verbunden ist, in deren Verlauf eine Kraftstoffpumpe zur Förderung von Kraftstoff aus dem Kraftstofftank zum Verbrennungsmotor eingeschaltet ist.The invention relates to a pump device with a fire extinguishing pump, an internal combustion engine for driving the fire extinguishing pump and a fuel tank which is connected to the internal combustion engine via a fuel line, in the course of which a fuel pump is connected for conveying fuel from the fuel tank to the internal combustion engine.

Pumpeneinrichtungen dieser Art sind bereits seit langem bekannt. Tragbare Ausführungen solcher Pumpeneinrichtungen werden auch als Tragkraftspritzen bezeichnet, die zum jeweiligen Ort getragen werden können und nicht in einem Fahrzeug, insbesondere Feuerwehrfahrzeug, fest eingebaut sind. In der Regel wird als Pumpe derartiger Tragkraftspritzen eine Feuerlöschkreiselpumpe verwendet, die durch einen an Bord der Tragkraftspritze befindlichen Verbrennungsmotor antreibbar ist. Derartige Tragkraftspritzen haben den Vorteil, dass sie entfernt vom Einsatzfahrzeug zur Wasserentnahme aus offenen Gewässern verwendet werden können.Pumping devices of this type have been known for a long time. Portable versions of such pumping devices are also known as portable pumps, which can be carried to the respective location and are not permanently installed in a vehicle, especially a fire engine. As a rule, the pump used in such portable pumps is a fire-fighting centrifugal pump, which can be driven by an internal combustion engine on board the portable pump. Such portable pumps have the advantage that they can be used away from the emergency vehicle to extract water from open waters.

Kraftstofftanks von Tragkraftspritzen sind auf autarken Betrieb für eine Stunde im Nennpunkt ausgelegt. Um einen weiteren Betrieb zu ermöglichen muss nachgetankt werden. Dies geschieht im Feuerwehrbereich mit standardmäßigen Kraftstoffkanistern. Aus sicherheitstechnischen Gründen muss dazu die Wasserversorgung unterbrochen und der Motor abgestellt werden. Entweichende Kraftstoffdämpfe sowie eine Überfüllung von Kraftstoff können auch im abgestellten Zustand z. B. bei heißen Motorkomponenten zu Gefahren bzw. Umweltbelastungen führen.Fuel tanks of portable pumps are designed for self-sufficient operation for one hour at the nominal point. To enable further operation, refueling is required. This is done in the fire service area with standard fuel canisters. For safety reasons, the water supply must be interrupted and the engine switched off. Escaping fuel vapors and overfilling with fuel can lead to dangers or environmental pollution even when the vehicle is switched off, e.g. when engine components are hot.

Aufgabe ist es daher, eine Pumpeneinrichtung der eingangs erwähnten Art zu schaffen, die im Vergleich zu herkömmlichen Pumpeneinrichtungen länger ohne Unterbrechungen und damit sicherer betreibbar ist. Insbesondere sollen die vorgenannten Nachteile aus dem Stand der Technik vermieden werden.The aim is therefore to create a pumping device of the type mentioned at the beginning which, in comparison to conventional pumping devices, can be operated for longer without interruptions and is therefore safer. In particular, the aforementioned disadvantages of the prior art should be avoided.

Diese Aufgabe wird durch eine Pumpeneinreichung mit den Merkmalen des unabhängigen Anspruchs 1 gelöst. Weiterbildungen der Erfindung sind in den Unteransprüchen dargestellt.This object is achieved by a pump application having the features of independent claim 1. Further developments of the invention are presented in the subclaims.

Die erfindungsgemäße Pumpeneinrichtung zeichnet sich dadurch aus, dass von einem Leitungsast der Kraftstoffleitung zwischen der Kraftstoffpumpe und dem Verbrennungsmotor eine zum Kraftstofftank führende Rücklaufleitung abzweigt, in deren Verlauf eine Strahlpumpe eingeschaltet ist, deren Sauganschluss zum Ansaugen von Kraftstoff aus einem bezüglich des Kraftstofftanks separaten Kraftstoffersatztank mit dem Kraftstoffersatztank koppelbar oder gekoppelt ist. Derartige Strahlpumpen zum Umfüllen von Kraftstoff zwischen in Fahrzeugen fest verbauten Kraftstofftanks sind z.B. aus WO 2014/036447 A1 oder EP 0228176 A1 bekannt.The pump device according to the invention is characterized in that a return line leading to the fuel tank branches off from a branch of the fuel line between the fuel pump and the combustion engine, in the course of which a jet pump is connected, the suction connection of which can be coupled or is coupled to the fuel replacement tank for sucking in fuel from a separate fuel replacement tank. Such jet pumps for transferring fuel between fuel tanks permanently installed in vehicles are made, for example, of WO 2014/036447 A1 or EP0228176A1 known.

Der über die Rücklaufleitung zurückgeführte Kraftstoff wirkt also als Treibmedium für die Strahlpumpe und sorgt für ein Ansaugen von Kraftstoff aus dem Kraftstoffersatztank. Es ist möglich, während des Betriebs der Pumpeneinrichtung nachzutanken. Es ist also nicht mehr notwendig, den Verbrennungsmotor abzustellen und damit die Wasserversorgung zu unterbrechen. Insbesondere bei der Brandbekämpfung ist dies ein entscheidender Vorteil.The fuel returned via the return line acts as a driving medium for the jet pump and ensures that fuel is sucked in from the fuel tank. It is possible to refuel while the pumping device is in operation. It is therefore no longer necessary to switch off the combustion engine and thus interrupt the water supply. This is a decisive advantage, especially when fighting fires.

In besonders bevorzugter Weise weist die Strahlpumpe eine Venturi-Düse auf. Die Venturi-Düse ist ein relativ einfach aufgebautes Bauteil, das daher relativ kostengünstig ist. Ferner ist die Venturi-Düse zuverlässig und relativ wartungsarm.The jet pump particularly preferably has a Venturi nozzle. The Venturi nozzle is a relatively simple component and is therefore relatively inexpensive. Furthermore, the Venturi nozzle is reliable and relatively low-maintenance.

Zweckmäßigerweise weist die Strahlpumpe ein Strahlenpumpengehäuse auf, mit einem Treibmitteleinlass und einem Treibmittelauslass, wobei als Treibmittel Kraftstoff verwendet wird.Conveniently, the jet pump has a jet pump housing with a propellant inlet and a propellant outlet, wherein fuel is used as the propellant.

Die ist tragbar ausgebildet, und es handelt sich bei der tragebaren Pumpeneinreichung um eine Tragkraftspritze.It is designed to be portable, and the portable pump unit is a portable pump.

Bei einer Weiterbildung der Erfindung ist vor der Rücklaufleitung ein Druckregelventil zur Regelung des Kraftstoffdrucks für den Motor eingeschaltet. Durch das Druckregelventil lässt sich der Kraftstoffdruck für das Rail des Motors regeln. Der überschüssige Kraftstoff, der für den Motor nicht benötigt wird, wird als Treibmedium für die Strahlpumpe verwendet.In a further development of the invention, a pressure control valve is connected upstream of the return line to regulate the fuel pressure for the engine. The pressure control valve can be used to regulate the fuel pressure for the engine rail. The excess fuel that is not required for the engine is used as a driving medium for the jet pump.

In besonders bevorzugter Weise ist am Sauganschluss ein Absperrventil zur Absperrung des Sauganschlusses bei abgekoppelten Kraftstoffersatztank angeordnet. Dadurch wird verhindert, dass bei abgekoppelten Kraftstoffersatztank Kraftstoff über den Sauganschluss austreten kann.In a particularly preferred manner, a shut-off valve is arranged on the suction connection to shut off the suction connection when the fuel reserve tank is disconnected. This prevents fuel from escaping via the suction connection when the fuel reserve tank is disconnected.

In besonders bevorzugter Weise weist der Sauganschluss eine Kopplungs-Schnittstelle auf, an der der Kraftstoffersatztank insbesondere unter Zwischenschaltung einer Saugleitung lösbar ankoppelbar ist.In a particularly preferred manner, the suction connection has a coupling interface to which the fuel replacement tank can be detachably coupled, in particular with the interposition of a suction line.

Besonders bevorzugt ist das Absperrventil selbstschließend ausgebildet und nimmt eine Absperrstellung ein, sobald der Kraftstoffersatztank abgekoppelt ist. Ein pro aktives Schalten des Absperrventils in die Absperrstellung ist bei dieser Ausgestaltung nicht notwendig, da das Absperrventil, insbesondere dessen Ventilglied bei Abkopplung des Kraftstoffersatztanks automatisch in die Absperrstellung überführt wird.Particularly preferably, the shut-off valve is designed to be self-closing and assumes a shut-off position as soon as the fuel tank is uncoupled. In this embodiment, it is not necessary to actively switch the shut-off valve to the shut-off position, since the shut-off valve, in particular its valve member, is automatically transferred to the shut-off position when the fuel tank is uncoupled.

Bei einer Weiterbildung der Erfindung ist in die Kraftstoffleitung ein Kraftstofffilter eingeschaltet. Zweckmäßigerweise befindet sich der Kraftstofffilter im Leitungsast zwischen Kraftstoffpumpe und Verbrennungsmotor.In a further development of the invention, a fuel filter is integrated into the fuel line. The fuel filter is expediently located in the line branch between the fuel pump and the combustion engine.

Besonders bevorzugt sind dem Kraftstofftank eine Füllstandsanzeige und/oder eine Füllstandsmesseinrichtung zugeordnet. Dadurch lässt sich der Füllstand des Kraftstofftanks kontrollieren und rechtzeitig der Nachfüllvorgang einleiten.Particularly preferably, the fuel tank is assigned a level indicator and/or a level measuring device. This allows the fuel tank level to be checked and the refilling process to be initiated in good time.

Es wäre beispielsweise auch möglich, dass der Kraftstoffersatztank an den Sauganschluss der Strahlpumpe angekoppelt bleibt und dann automatisch einen Nachfüllvorgang eingeleitet wird, sobald ein bestimmter Füllstand unterschritten wird. Das Absperrventil kann dann derart ausgestaltet sein, dass ein Überfüllen des Kraftstofftanks mit Kraftstoff verhindert wird, indem es bei einem bestimmten Maximal-Füllstand absperrt. Ferner wäre auch ein kontinuierliches Nachfüllen denkbar, in derart, dass stets Kraftstoff, wenngleich mit deutlich geringerem Durchfluss, über die Nachüllleitung rückgeführt wird und daher die Strahlpumpe stets in Betrieb ist und Kraftstoff aus dem Kraftstoffersatzkanister ansaugt, wodurch der Füllstand an Kraftstoff solange konstant bleibt bis der Kraftstoffersatztank leer ist.It would also be possible, for example, for the fuel replacement tank to remain connected to the suction connection of the jet pump and then a refilling process to be initiated automatically as soon as a certain level is undershot. The shut-off valve can then be designed in such a way that the fuel tank is prevented from being overfilled with fuel by shutting off at a certain maximum level. Continuous refilling would also be conceivable, in such a way that fuel is always returned via the refill line, albeit with a significantly lower flow rate, and the jet pump is therefore always in operation. and draws fuel from the reserve fuel canister, whereby the fuel level remains constant until the reserve fuel tank is empty.

Bei einer Weiterbildung der Erfindung umfasst die Pumpeneinrichtung einen Kraftstoffersatztank, insbesondere in Form eines Kraftstoffkanisters.In a further development of the invention, the pump device comprises a fuel replacement tank, in particular in the form of a fuel canister.

Ein bevorzugtes Ausführungsbeispiel ist in der Zeichnung dargestellt und wird im Folgenden näher erläutert. Die einzige Figur der Zeichnung zeigt:
eine schematische Darstellung eines bevorzugten Ausführungsbeispiels der erfindungsgemäßen Pumpeneinrichtung. Die Figur zeigt ein bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Pumpeneinrichtung 11. Hauptkomponente der Pumpeneinrichtung 11 ist eine Feuerlöschpumpe 12, die im Folgenden beispielhaft in Form einer Feuerlöschkreiselpumpe beschrieben ist. Die Pumpeneinrichtung 11 ist eine portable Pumpeneinrichtung 11 in Form einer sogenannten Tragkraftspritze. Prinzipiell und nicht erfindungsgemäß wäre es jedoch auch möglich, die Pumpeneinrichtung als Einbaupumpe zu verwenden, wo sie dann an Bord eines Einsatzfahrzeugs, insbesondere Feuerwehrfahrzeug, eingebaut ist.A preferred embodiment is shown in the drawing and is explained in more detail below. The only figure in the drawing shows:
a schematic representation of a preferred embodiment of the pump device according to the invention. The figure shows a preferred embodiment of the pump device 11 according to the invention. The main component of the pump device 11 is a fire extinguishing pump 12, which is described below as an example in the form of a fire extinguishing centrifugal pump. The pump device 11 is a portable pump device 11 in the form of a so-called portable pump. In principle and not according to the invention, however, it would also be possible to use the pump device as a built-in pump, where it is then installed on board an emergency vehicle, in particular a fire engine.

Die Feuerlöschkreiselpumpe, die im Folgenden der Einfachheit halber lediglich als Pumpe 12 bezeichnet wird, besitzt ein Pumpengehäuse (nicht dargestellt), das einen Pumpenraum umschließt. Im Pumpenraum ist ein Pumpenläufer (nicht dargestellt) beweglich aufgenommen. Als Pumpenläufer wird zweckmäßigerweise ein Radiallaufrad verwendet, das von einem Abtriebsteil, insbesondere Abtriebswelle, eines an Bord der Tragkraftspritze befindlichen Verbrennungsmotors 13 angetrieben wird.The fire-fighting centrifugal pump, which is referred to below as pump 12 for the sake of simplicity, has a pump housing (not shown) that encloses a pump chamber. In the pump chamber, a pump rotor (not shown) is movably received. A radial impeller is expediently used as the pump rotor, which is driven by an output part, in particular an output shaft, of an internal combustion engine 13 located on board the portable pump.

Der Pumpenläufer saugt im Betrieb Wasser oder ggf. ein Wasser-/ Schaumgemisch über eine Saugseite in den Pumpenraum und gibt das angesaugte Wasser über eine Druckseite, im Falle eines Radiallaufrads also in radialer Richtung, mit erhöhtem Druck ab. An der Druckseite sind in der Regel mehrere Feuerwehrschläuche anschließbar, an deren freien Enden Strahlrohre befestigt sind, über die Löschwasser gezielt zur Brandbekämpfung an den Brandherd gebracht werden kann.During operation, the pump impeller sucks water or, if necessary, a water/foam mixture into the pump chamber via a suction side and releases the sucked-in water at increased pressure via a pressure side, in the case of a radial impeller, in a radial direction. Several fire hoses can usually be connected to the pressure side, with jet pipes attached to the free ends, through which extinguishing water can be directed to the source of the fire for firefighting.

Bei dem Verbrennungsmotor 13 kann es sich um einen Ottomotor oder einen Dieselmotor handeln.The combustion engine 13 can be a gasoline engine or a diesel engine.

Der Verbrennungsmotor ist über eine Kraftstoffleitung 14 mit einem Kraftstofftank 15 verbunden. Der Kraftstofftank 15 befindet sich an Bord der Tragkraftspritze bzw. der tragbaren Pumpeneinrichtung 11.The combustion engine is connected to a fuel tank 15 via a fuel line 14. The fuel tank 15 is located on board the portable pump or the portable pumping device 11.

In den Verlauf der Kraftstoffleitung 14 ist eine Kraftstoffpumpe 16 zur Förderung von Kraftstoff, also Diesel oder Benzin aus dem Kraftstofftank 15 zum Verbrennungsmotor 13 eingeschaltet. Die Kraftstoffpumpe 16 ist außerhalb des Kraftstofftanks 15 angeordnet und ein an einer Saugseite der Kraftstoffpumpe 16 angeordneter Leitungsast der Kraftstoffleitung 14 ragt in den Kraftstofftank 15.A fuel pump 16 is connected to the fuel line 14 to pump fuel, i.e. diesel or gasoline, from the fuel tank 15 to the combustion engine 13. The fuel pump 16 is arranged outside the fuel tank 15 and a branch of the fuel line 14 arranged on a suction side of the fuel pump 16 extends into the fuel tank 15.

Zum Betreiben des Verbrennungsmotors 13 wird Kraftstoff mittels der Kraftstoffpumpe 16 dem Verbrennungsmotor 13 über die Kraftstoffleitung 14 zugeführt. Dies hat zur Folge, dass sich der Füllstand des Kraftstoffs im Kraftstofftank 15 verringert. Bei herkömmlichen Tragkraftspritzen besteht der Bedarf, einen niedrigen Füllstand des Kraftstoffs in dem Kraftstofftank 15 derart rechtzeitig zu erkennen, dass sich der Kraftstofftank 15 nicht vollständig leert, was zur Folge hätte, dass Luft angesaugt wird und möglicherweise die Kraftstoffpumpe beschädigt wird. Ferner würde der Betrieb des Verbrennungsmotors und somit die Wasserversorgung unterbrochen werden.To operate the internal combustion engine 13, fuel is supplied to the internal combustion engine 13 via the fuel line 14 by means of the fuel pump 16. This results in the level of fuel in the fuel tank 15 being reduced. In conventional portable pumps, there is a need to maintain a low level of fuel in the fuel tank 15 in such a timely manner that the fuel tank 15 does not empty completely, which would result in air being sucked in and possibly damaging the fuel pump. Furthermore, the operation of the combustion engine and thus the water supply would be interrupted.

Bei herkömmlichen Tragkraftspritzen war daher ein rechtzeitiges Nachtanken erforderlich. Hierzu musste der Verbrennungsmotor abgeschaltet werden, was zur Folge hatte, dass die Wasserversorgung unterbrochen wird.With conventional portable pumps, it was therefore necessary to refuel in good time. To do this, the combustion engine had to be switched off, which meant that the water supply was interrupted.

Bei der erfindungsgemäßen Pumpeneinrichtung 11 ist hingegen von einem Leitungsast 17 der Kraftstoffleitung 14 zwischen der Kraftstoffpumpe 16 und dem Verbrennungsmotor 13 eine zum Kraftstofftank 15 führende Rücklaufleitung 18 abgezweigt, in deren Verlauf eine Strahlpumpe 19 eingeschaltet ist, deren Sauganschluss 20 zum Ansaugen von Kraftstoff aus einem bezüglich des Kraftstofftanks 15 separaten Kraftstoffersatztank 21 mit dem Kraftstoffersatztank 21 koppelbar oder gekoppelt ist.In the pump device 11 according to the invention, however, a return line 18 leading to the fuel tank 15 is branched off from a line branch 17 of the fuel line 14 between the fuel pump 16 and the internal combustion engine 13, in the course of which a jet pump 19 is switched on, the suction connection 20 of which can be or is coupled to the fuel replacement tank 21 for sucking in fuel from a fuel replacement tank 21 separate from the fuel tank 15.

Die in der Figur beispielhaft schematisch dargestellte Strahlpumpe weist als Hauptbestandteil eine Venturi-Düse auf. Eine derartige Strahlpumpe 19 mit Venturi-Düse ist relativ kostengünstig, da sie aus wenigen Bauteilen aufgebaut ist. Die Strahlpumpe 19 umfasst ferner ein Strahlpumpengehäuse (nicht dargestellt), das einen Treibmitteleinlass 22 und einen Treibmittelauslass 23 aufweist. Als Treibmittel dient in der Rücklaufleitung 18 in Richtung Kraftstofftank 15 zurückströmender Kraftstoff.The jet pump shown schematically in the figure as an example has a Venturi nozzle as its main component. Such a jet pump 19 with a Venturi nozzle is relatively inexpensive because it is made up of few components. The jet pump 19 also comprises a jet pump housing (not shown) which has a propellant inlet 22 and a propellant outlet 23. Fuel flowing back in the return line 18 in the direction of the fuel tank 15 serves as the propellant.

Wie beispielhaft in der Figur dargestellt, ist der Kraftstoffersatztank, bei dem es sich zweckmäßigerweise um einen Kraftstoffkanister handelt mit dem Sauganschluss 20 der Strahlpumpe gekoppelt. Zweckmäßigerweise wird hierfür eine Saugleitung 24, beispielsweise Saugschlauch, verwendet.As shown in the figure, the fuel replacement tank, which is preferably a fuel canister, is connected to the suction connection 20 of the jet pump. A suction line 24, for example a suction hose, is expediently used for this purpose.

Dem Sauganschluss 20 ist ferner ein Absperrventil 25 zugeordnet, mit dem der Sauganschluss 20 bei abgekoppeltem Kraftstoffersatztank 21 absperrbar ist. Im gezeigten Beispielsfall weist der Sauganschluss 20 der Strahlpumpe 19 eine Kopplungs-schnittstelle 26 auf, an der die Saugleitung 24, die zum Kraftstoffersatztank 21 führt, lösbar befestigt ist.The suction connection 20 is also assigned a shut-off valve 25, with which the suction connection 20 can be shut off when the fuel reserve tank 21 is disconnected. In the example shown, the suction connection 20 of the jet pump 19 has a coupling interface 26 to which the suction line 24, which leads to the fuel reserve tank 21, is detachably attached.

Das Absperrventil 25 ist im gezeigten Beispielsfall selbstschließend ausgebildet und nimmt eine Absperrstellung ein, sobald der Kraftstoffersatztank 21 abgekoppelt ist.In the example shown, the shut-off valve 25 is designed to be self-closing and assumes a shut-off position as soon as the fuel replacement tank 21 is disconnected.

Wie insbesondere schematisch in der Figur gezeigt, ist in die Rücklaufleitung 18 ein Druckregelventil 28 zur Regelung des Kraftstoffdrucks in der Rücklaufleitung 18 eingeschaltet. Im gezeigten Beispielsfall ist ein Druckregelventil 28 gewählt, dessen Ventilglied federbelastet ist und das ab einen bestimmten voreinstellbaren oder voreingestellten Druck öffnet. Der Druck an der Primärseite des Ventils wird ermittelt und dem Ventilglied aufgeschaltet, in der Art, dass das Ventil bei zu hohem Primärdruck ggf. teilweise schließt und bei zu niedrigem Primärdruck weiter öffnet. Durch Änderung der Federvorspannung der Feder, lässt sich der Druck variieren, so dass der Kraftstoffdruck in der Rücklaufleitung geregelt werden kann. Überschüssiger, nicht benötigter Kraftstoff wird zum Betrieb der Strahlpumpe benötigt.As shown schematically in the figure, a pressure control valve 28 is connected to the return line 18 to regulate the fuel pressure in the return line 18. In the example shown, a pressure control valve 28 is selected whose valve member is spring-loaded and which opens from a certain pre-set or pre-set pressure. The pressure on the primary side of the valve is determined and connected to the valve member in such a way that the valve may partially close if the primary pressure is too high and open further if the primary pressure is too low. By changing the spring preload of the spring, the pressure can be varied so that the fuel pressure in the return line can be regulated. Excess fuel that is not required is required to operate the jet pump.

Wie ferner schematisch in der Figur gezeigt, ist im Leitungsast 17 zwischen der Kraftstoffpumpe 16 und im Verbrennungsmotor 13 ein Kraftstofffilter 29 eingeschaltet.As further shown schematically in the figure, a fuel filter 29 is connected in the line branch 17 between the fuel pump 16 and the combustion engine 13.

Um den Füllstand des Kraftstofftanks 15 zu überwachen ist im Kraftstofftank 15 eine Füllstandsanzeige 30 oder eine Füllstandsmesseinrichtung zugeordnet.In order to monitor the fill level of the fuel tank 15, a fill level indicator 30 or a fill level measuring device is assigned in the fuel tank 15.

Im Betrieb der Tragkraftspritze saugt die Kraftstoffpumpe 16 Kraftstoff aus dem Kraftstofftank 15 an und drückt diesen druckseitig über den Kraftstofffilter 29 durch die Kraftstoffleitung 14 zum Verbrennungsmotor 13, wo dann Kraftstoff zum Betrieb des Verbrennungsmotors verbraucht wird. Über den Verbrennungsmotor und dessen Abtriebswelle ist die an Bord der Tragkraftspritze befindliche Feuerlöschkreiselpumpe angetrieben, die ihrerseits saugseitig Löschwasser ansaugt und druckseitig abgibt. Über die Füllstandsanzeige 30 lässt sich der Füllstand an Kraftstoff im Kraftstofftank 15 kontrollieren. Fällt der Füllstand des Kraftstoffs unter einem Minimalwert, so besteht der Bedarf den Kraftstofftank 15 wieder aufzufüllen, d. h. nachzutanken. Gegebenenfalls lässt sich das über ein akustisches und/oder optisches Signal feststellen. In diesem Fall wird der Kraftstoffkanister an der Kopplungs-Schnittstelle 26 über die Saugleitung 24 angekoppelt, wobei das Absperrventil 25 in die Offenstellung geschaltet wird. Über in der Rücklaufleitung 18 zurücklaufenden Kraftstoff wird die Strahlpumpe 19 betrieben, die ihrerseits Kraftstoff aus dem Kraftstoffkanister ansaugt und dem Kraftstofftank 15 zuführt. Das Absperrventil 25 kann derart ausgestaltet sein, dass ein Überfüllen des Kraftstofftanks 15 verhindert wird, indem es ab einem bestimmten Füllstand schließt.When the portable pump is in operation, the fuel pump 16 sucks fuel from the fuel tank 15 and presses it on the pressure side via the fuel filter 29 through the fuel line 14 to the combustion engine 13, where fuel is then used to operate the combustion engine. The fire-fighting centrifugal pump on board the portable pump is driven by the combustion engine and its output shaft, which in turn sucks in extinguishing water on the suction side and releases it on the pressure side. The fuel level in the fuel tank 15 can be checked using the level indicator 30. If the fuel level falls below a minimum value, the fuel tank 15 needs to be refilled, i.e. refueled. If necessary, this can be determined via an acoustic and/or optical signal. In this case, the fuel canister is coupled to the coupling interface 26 via the suction line 24, with the shut-off valve 25 being switched to the open position. The jet pump 19 is operated by fuel flowing back in the return line 18, which in turn sucks fuel from the fuel canister and supplies it to the fuel tank 15. The shut-off valve 25 can be designed in such a way that overfilling of the fuel tank 15 is prevented by closing it at a certain fill level.

Eine andere Variante ist, dass der Kraftstoffersatztank 21 insbesondere der Kraftstoffkanister in Betrieb über die Saugleitung 24 an den Sauganschluss 20 der Strahlpumpe angekoppelt ist, so dass automatisch und stets Kraftstoff vom Kraftstoffkanister in den Kraftstofftank befördert wird, wodurch die Füllhöhe des Kraftstoffs im Kraftstofftank 15 über eine gewisse Zeit, bis der Kraftstoffkanister geleert ist, im Wesentlichen konstant bleibt.Another variant is that the fuel replacement tank 21, in particular the fuel canister, is coupled to the suction connection 20 of the jet pump via the suction line 24 during operation, so that fuel is automatically and constantly conveyed from the fuel canister into the fuel tank, whereby the filling level of the fuel in the fuel tank 15 is controlled via a remains essentially constant for a certain period of time until the fuel canister is emptied.

Bei beiden Betriebsweisen ist es nicht notwendig, den Verbrennungsmotor abzuschalten und damit die Wasserversorgung zu unterbrechen, sondern es kann in Betrieb nachgetankt werden.In both operating modes, it is not necessary to switch off the combustion engine and thus interrupt the water supply, but refueling can be carried out while the vehicle is in operation.

Claims (9)

  1. Pump device having a fire pump (12), an internal combustion engine (13) for driving the fire pump (12) and a fuel tank (15) which is connected to the internal combustion engine (13) via a fuel line (14), along the course of which a fuel pump (16) is engaged to convey fuel from the fuel tank (15) to the internal combustion engine (13), wherein a return line (18) leading to the fuel tank (15) branches off from a branch (17) of the fuel line (14) between the fuel pump (16) and the internal combustion engine (13), along the course of which return line a jet pump (19) is engaged, the suction connection (20) of which is connectable or connected to the auxiliary fuel tank (21) for drawing fuel from an auxiliary fuel tank (21) that is separate in respect of the fuel tank (15),
    wherein the fuel pump (16) is arranged outside the fuel tank (15) and another branch of the fuel line (14) arranged on a suction side of the fuel pump (16) projects into the fuel tank (15) and wherein the pump device (11) is designed to be portable and the portable pump device (11) is a portable fire pump.
  2. Pump device according to Claim 1, characterized in that the jet pump (19) has a Venturi nozzle.
  3. Pump device according to any one of the preceding claims, characterized in that a pressure control valve (28) for regulating fuel pressure for the internal combustion engine (13) is engaged in the return line (18).
  4. Pump device according to any one of the preceding claims, characterized in that a shut-off valve (25) for shutting off the suction connection (20) when the auxiliary fuel tank (21) is disconnected is arranged at the suction connection (20).
  5. Pump device according to any one of the preceding claims, characterized in that the suction connection (20) has a coupling interface (27) to which the auxiliary fuel tank (21) can be detachably connected, particularly with the interposition of a suction line (24).
  6. Pump device according to either one of Claims 4 or 5, characterized in that the shut-off valve (25) has a self-closing design and adopts a closed position as soon as the auxiliary fuel tank (21) is disconnected.
  7. Pump device according to any one of the preceding claims, characterized in that a fuel filter (29) is engaged in the fuel line, particularly in the branch (17) between the fuel pump (16) and the internal combustion engine (13).
  8. Pump device according to any one of the preceding claims, characterized in that a fill level indicator (30) and/or a fill level measuring device is/are associated with the fuel tank (15).
  9. Pump device according to any one of the preceding claims, characterized in that it has an auxiliary fuel tank (21), in particular a fuel canister.
EP19201860.4A 2018-10-11 2019-10-08 Pump device comprising a pump, a combustion engine for driving said pump and a fuel tank Active EP3636477B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018217440.7A DE102018217440B4 (en) 2018-10-11 2018-10-11 Pump device with pump, internal combustion engine for driving the pump and fuel tank

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EP3636477A1 EP3636477A1 (en) 2020-04-15
EP3636477C0 EP3636477C0 (en) 2024-05-01
EP3636477B1 true EP3636477B1 (en) 2024-05-01

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DE (1) DE102018217440B4 (en)
ES (1) ES2981396T3 (en)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186334B (en) * 1959-09-24 1965-01-28 Rheinstahl Hanomag Ag Fire extinguisher
FR2537932A1 (en) * 1982-12-15 1984-06-22 Dev Securite Ste Indle Low speed travel device for a vehicle, the engine of which has to turn at high speed in order to drive equipment, and vehicle fitted with such a device
EP0753423A1 (en) * 1995-07-11 1997-01-15 Rosenbauer International Aktiengesellschaft Fire-fighting vehicle, especially for airports, with at least two drive motors arranged on either side of a longitudinal axis

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT394979B (en) * 1984-12-06 1992-08-10 Rosenbauer Int Gmbh DRIVE ARRANGEMENT FOR A FIREFIGHTER VEHICLE
ES2019064B3 (en) * 1985-12-24 1991-06-01 Ford Motor Co FUEL TANK EQUALIZATION SYSTEM.
US4930537A (en) * 1989-06-02 1990-06-05 Paccar Inc. Vehicle multiple-tank fuel system
DE4227121A1 (en) 1992-08-17 1994-02-24 Kloeckner Humboldt Deutz Ag Fuel tank layout for farm tractor - uses two tanks connected by pipe fed by jet pump which has inlet connected to return pipe
JP4019873B2 (en) 2001-10-12 2007-12-12 日産自動車株式会社 Rudder angle ratio control device
JP2008546944A (en) * 2005-06-21 2008-12-25 ダイムラー・アクチェンゲゼルシャフト Fuel supply device
WO2014036447A1 (en) * 2012-08-30 2014-03-06 Robert Bosch Gmbh Fuel supply system and method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1186334B (en) * 1959-09-24 1965-01-28 Rheinstahl Hanomag Ag Fire extinguisher
FR2537932A1 (en) * 1982-12-15 1984-06-22 Dev Securite Ste Indle Low speed travel device for a vehicle, the engine of which has to turn at high speed in order to drive equipment, and vehicle fitted with such a device
EP0753423A1 (en) * 1995-07-11 1997-01-15 Rosenbauer International Aktiengesellschaft Fire-fighting vehicle, especially for airports, with at least two drive motors arranged on either side of a longitudinal axis

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Publication number Publication date
DE102018217440B4 (en) 2020-06-18
EP3636477C0 (en) 2024-05-01
PL3636477T3 (en) 2024-09-09
EP3636477A1 (en) 2020-04-15
ES2981396T3 (en) 2024-10-08
DE102018217440A1 (en) 2020-04-16

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