DE4400919A1 - Fuel suction from two chamber saddle tank - Google Patents

Fuel suction from two chamber saddle tank

Info

Publication number
DE4400919A1
DE4400919A1 DE19944400919 DE4400919A DE4400919A1 DE 4400919 A1 DE4400919 A1 DE 4400919A1 DE 19944400919 DE19944400919 DE 19944400919 DE 4400919 A DE4400919 A DE 4400919A DE 4400919 A1 DE4400919 A1 DE 4400919A1
Authority
DE
Germany
Prior art keywords
fuel
tank
pump
line
chamber
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.)
Withdrawn
Application number
DE19944400919
Other languages
German (de)
Inventor
Klaus Gebert
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Priority to DE19944400919 priority Critical patent/DE4400919A1/en
Publication of DE4400919A1 publication Critical patent/DE4400919A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation
    • 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
    • F02M37/0094—Saddle tanks; Tanks having partition walls
    • 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
    • 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
    • F04F10/00—Siphons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • B60K2015/03131—Systems for filling dual tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • B60K2015/03138—Pumping means between the compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • B60K2015/03144—Fluid connections between the tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
    • B60K2015/03151—Mechanical connection between the tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A device provides fuel suction from two tank chambers, the chambers being divided via a separating wall. One of these chambers has a fuel pump, which supplies fuel from this chamber and via a supply line to the engine. Both tank chambers (5,6) are connected via a connecting supply (10) passing through the separating wall (4), which ends shortly before the tank floor. The connecting supply has a branch (11) at its highest point, which is connected to an electric pump or to the vacuum chamber (12) of an injection pump (13). This pump uses overflow fuel returned from the engine via return line (14).

Description

Die Erfindung betrifft eine Vorrichtung zur Brenn­ stoffabsaugung aus zwei unterhalb einer Trennwand nicht verbundene Tankkammern eines Satteltanks, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for burning fabric suction from two below a partition unconnected tank chambers of a saddle tank, according to the preamble of claim 1.

Um den Nutzraum von Kraftfahrzeugen zu vergrößern, werden Brennstofftanks über Antriebsbauteile oder Auspuffrohrteile des Fahrzeuges angeordnet, wobei hierfür der Tank im Bodenbereich Aushöhlungen auf­ weist, die Trennwände bilden zwischen beiderseits der Aushöhlungen bestehende Tankkammern, die aus baulichen oder sicherheitsrelevanten Gründen keine tiefer liegenden Verbindungsleitungen aufweisen sol­ len.To increase the usable space of motor vehicles, are fuel tanks via drive components or Exhaust pipe parts of the vehicle arranged, wherein for this, the tank hollows out in the bottom area points, the partitions form between on both sides of the hollows existing tank chambers that are made of constructional or security-related reasons none have lower-lying connecting lines len.

Es ist somit erforderlich, Maßnahmen zu treffen, die sicherstellen, daß kein ungenutzter Brennstoff in den bestehenden Tankkammern verbleibt.It is therefore necessary to take measures which ensure that no unused fuel remains in the existing tank chambers.

Eine bekannte Vorrichtung sieht hierfür vor, daß in der Tankkammer ohne Brennstoffpumpe eine Saug­ strahlpumpe angeordnet ist, die von der Brennstoff­ rücklaufmenge, d. h., der von dem Kraftfahr­ zeugmotor nicht benötigten Überschußmenge, gespeist wird (DE-C2-39 40 060).A known device provides for this that the tank chamber without a fuel pump a suction jet pump is arranged by the fuel return quantity, d. that is, from the motor vehicle Waste motor not required excess quantity, fed (DE-C2-39 40 060).

Nachteilig ist bei dieser Vorrichtung, daß die Füllstandsanzeige über in jeder Tankkammer angeord­ nete Tankgeber erfolgen muß, deren Einzelanzeige in verknüpfter Form als Gesamtfüllstandsanzeige ausge­ geben wird.The disadvantage of this device is that the Level indicator arranged in each tank chamber Nete fuel sender must be made, the individual display in linked form as total level indicator will give.

Eine solche Konstruktion erfordert demnach, daß zwei Tankgeber sowie eine Verknüpfungsschaltung vorgesehen sein müssen, was sehr kostspielig und kompliziert ist.Such a construction therefore requires that two fuel sensors and a logic circuit must be provided, which is very expensive and is complicated.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine gattungsgemäße Vorrichtung derart zu gestalten, daß eine Entleerung der beiden Tankkam­ mern erreichbar wird, wobei nur ein Tankgeber ein­ gesetzt werden soll, womit auch die Verknüpfungs­ schaltung überflüssig wird.Proceeding from this, the object of the invention based on such a generic device shape that an emptying of the two tank came mern is reachable, whereby only one fuel gauge should be set, with which the link circuit becomes superfluous.

Diese Aufgabe ist durch die im Kennzeichen des Pa­ tentanspruchs 1 angegebenen Merkmale gelöst. Vor­ teilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This task is characterized by the characteristics of Pa Features specified 1 solved. Before partial developments of the invention are in the Subclaims specified.

Ein Ausführungsbeispiel der Erfindung ist schema­ tisch in der Zeichnung dargestellt und wird nach­ folgend mit Angabe von erreichbaren Vorteilen be­ schrieben.An embodiment of the invention is schematic table shown in the drawing and is after following with indication of achievable advantages wrote.

Diese zeigt:This shows:

Fig. 1 eine Vorrichtung zur Brennstoffabsaugung; Figure 1 shows a device for fuel extraction.

Fig. 2 eine Einzelheit aus Fig. 1. FIG. 2 shows a detail from FIG. 1.

Die Fig. 1 zeigt einen Brennstofftank 1 mit einer Aushöhlung 2 im Bodenbereich 3, wodurch Trennwände 4 gebildet sind zwischen beiderseits der Aushöhlung 2 bestehende Tankkammern 5, 6. Diese weisen aus baulichen oder sicherheitsrelevanten Gründen keine tiefer liegenden Verbindungsleitungen auf. Fig. 1 shows a fuel tank 1 with a cavity 2 in the bottom region 3, thereby forming partition walls 4 between both sides of the cavity 2 existing tank chambers 5, 6. For structural or safety-related reasons, these do not have any lower-lying connecting lines.

In der rechten Tankkammer 5 ist eine übliche Brenn­ stoffpumpe 7 angeordnet, die ganz oder teilweise vom Brennstoff umspült ist. Diese Brennstoffpumpe 7 weist eine Ansaugleitung 8 auf, die Brennstoff aus der rechten Tankkammer 5 absaugen soll. In der ge­ zeigten Ausführung ist die Brennstoffpumpe 7 in ei­ nem bekannten Schlingertopf 9 angeordnet. Eine Ver­ bindungsleitung 10, die über die Trennwand 4 hinweg in die linke Tankkammer 6 einmündet, verbindet die beiden Tankkammern 5, 6 und mündet in jeder Kammer kurz vor dem Tankboden aus. In the right tank chamber 5 , a conventional fuel pump 7 is arranged, which is wholly or partially surrounded by the fuel. This fuel pump 7 has an intake line 8 which is intended to extract fuel from the right tank chamber 5 . In the embodiment shown, the fuel pump 7 is arranged in a known tumbler 9 . A Ver connecting line 10 , which opens over the partition 4 into the left tank chamber 6 , connects the two tank chambers 5 , 6 and opens out in each chamber just before the tank bottom.

Die Verbindungsleitung 10 weist an ihrer höchsten Stelle einen Leitungsabzweig 11 auf, der mit einer Vakuumkammer 12 einer Strahlpumpe 13 verbunden ist, wobei die Strahlpumpe 13 unter Ausnutzung der über eine Rücklaufleitung 14 von der Brennkraftmaschine zurückströmenden Brennstoffüberschußmenge fördert.The connecting line 10 has at its highest point a line branch 11 , which is connected to a vacuum chamber 12 of a jet pump 13 , the jet pump 13 conveying the excess fuel quantity flowing back from the internal combustion engine via a return line 14 .

Durch diese Maßnahme erfolgt über die mit Brenn­ stoff gefüllte Verbindungsleitung 10 ein Ausgleich des Füllstandes beider Tankkammern 5, 6 über die bekannte Saugheberwirkung. Bei einer in der Verbin­ dungsleitung 10 einsetzenden Gasansammlung, die an deren höchster Stelle erfolgt, wird diese durch den in der Vakuumkammer 12 der Strahlpumpe 13 herr­ schenden Unterdruck abgesaugt und über vorgesehene Leitungen 15, 16 in eine oder beide Tankkammern 5, 6 gefördert. Unabhängig von einer dabei erfolgenden Brennstoffabsaugung erfolgt über die Verbindungs­ leitung 10 ein Niveauausgleich.This measure takes place via the fuel-filled connecting line 10, a compensation of the level of both tank chambers 5 , 6 via the known suction lifter effect. When in the connec tion line 10 gas accumulation, which takes place at its highest point, this is sucked off by the negative pressure prevailing in the vacuum chamber 12 of the jet pump 13 and conveyed via lines 15 , 16 into one or both tank chambers 5 , 6 . Regardless of a fuel extraction taking place via the connecting line 10 is level compensation.

Vorteilhafterweise kann vorgesehen sein, wie in Fig. 2 vergrößert dargestellt ist, daß der Lei­ tungsabzweig 11 durch ein auf den Brennstoffdruck in diesem Abzweig 11 reagierendes Ventil 17 geöff­ net oder geschlossen ist, wobei das Ventil als Schwimmerventil oder als Elektroventil, das auf ei­ nem Schwimmerschalter reagiert, ausgebildet ist.Is advantageously may be provided as shown in FIG. 2, shown enlarged in that the Lei is tung branching 11 or closed by means responsive to the fuel pressure in the junction 11 of valve 17 geöff net, wherein the valve as a float valve or electric valve which nem on ei Float switch responds, is trained.

Mit dieser Maßnahme wird die Verbindungsleitung 10 bei Stillstand der Brennkraftmaschine und außer Be­ trieb befindlicher Strahlpumpe 13 nicht belüftet, so daß ein Niveauausgleich auch bei Fahrzeugstill­ stand, zum Beispiel beim Betanken, stattfinden kann.With this measure, the connecting line 10 is not ventilated when the internal combustion engine is at a standstill and the jet pump 13 is not in operation, so that a level compensation was also at a standstill, for example when refueling.

Um übermäßigen Druckaufbau in der Brennstoffrück­ laufleitung 14 zu verhindern, kann vorgesehen sein, daß die Rücklaufleitung 14 einen in die Tankkammer 5 mit Brennstoffpumpe 7 führenden Abzweig 18 auf­ weist, der durch ein Druckventil 19 kontrolliert wird und vorteilhafterweise, wie bereits beschrie­ ben, in einen Schlingertopf 9 einmündet, in dem die Brennstoffpumpe 7 angeordnet ist.In order to prevent excessive pressure build-up in the fuel return line 14 , it can be provided that the return line 14 has a branch 18 leading into the tank chamber 5 with fuel pump 7 , which is controlled by a pressure valve 19 and advantageously, as already described, in one Schlingertopf 9 opens, in which the fuel pump 7 is arranged.

Die Erfindung beruht auf der Überlegung, daß kommu­ nizierende Röhren im gefüllten Zustand auch ober­ halb eines Flüssigkeitsspiegels angeordnet funk­ tionieren. Der Beginn des Niveauausgleichs wird durch Füllen der Verbindungsleitung 10 mit Brenn­ stoff durch Absaugen der Gase am höchsten Punkt der Verbindungsleitung 10 ausgelöst. Diese Absaugung sorgt auch dafür, daß im Heißbetrieb anfallende Gase oder ein Austauchen der Leitungsenden aus dem Brennstoff nicht zum Ausfall der Verbindung führen.The invention is based on the consideration that communicating tubes in the filled state also function above half of a liquid level. The start of level compensation is triggered by filling the connecting line 10 with fuel by suctioning off the gases at the highest point of the connecting line 10 . This extraction also ensures that gases that occur during hot operation or that the line ends emerge from the fuel do not lead to the failure of the connection.

Auf diese Weise kann ein zweiter Tankgeber und eine zweite Einfüllöffnung im Tank mit allen Komponenten entfallen, da es nun möglich ist, den Satteltank durch eine einzige Einfüllöffnung zu befüllen. Dies bringt Kostenvorteile und erleichtert ein Bestehen von Sicherheitstests. Das abgesaugte Volumen (Flüssigkeit und Gas) wird entweder auf die beiden Tankkammern gleichmäßig aufgeteilt oder unter­ schiedlich, um der Strömung in der Ver­ bindungsleitung 10 eine Vorzugsrichtung zu geben.In this way, a second tank sensor and a second fill opening in the tank with all components can be dispensed with, since it is now possible to fill the saddle tank through a single fill opening. This brings cost advantages and makes it easier to pass security tests. The extracted volume (liquid and gas) is either divided equally between the two tank chambers or under different to give the flow in the connecting line 10 a preferred direction.

Die Absaugvorrichtung kann sich wahlweise auf der Aushöhlung 2 - wie dargestellt - oder alternativ als Funktionseinrichtung in einem Tankdeckel befinden. Wegen der Systemträgheit in der Anzeige sollte die Füllstandsanzeige etwas stärker gedämpft werden. Die vorgeschlagene Saugstrahlpumpe wird vorteilhaft über das Druckventil 19 mit einem kostanten Druck und einer geringen Fördermenge betrieben. Die Strahlpumpe 13 wird vorteilhaft so ausgelegt, daß ein hoher Unterdruck und ein schlechtes Flüssigkeitsfördervermögen entsteht. Der Unterdruck zu der Verbindungsleitung 10 kann über das Schwim­ mer- oder Elektroventil abgeschaltet werden, sobald die Verbindungsleitung 10 gefüllt ist.The suction device can optionally be located on the cavity 2 - as shown - or alternatively as a functional device in a tank cap. Due to the system inertia in the display, the level indicator should be dampened somewhat more. The proposed suction jet pump is advantageously operated via the pressure valve 19 with a high pressure and a low delivery rate. The jet pump 13 is advantageously designed in such a way that a high negative pressure and poor liquid delivery capacity are created. The vacuum to the connecting line 10 can be switched off via the float or electro valve as soon as the connecting line 10 is filled.

Die Gasabsaugung kann alternativ über eine elektri­ sche Pumpe erfolgen. In diesem Falle ist es mög­ lich, die elektrische Pumpe während des Betankens einzuschalten, um ein Niveauausgleich zu beschleu­ nigen. Eine entsprechende Schaltung könnte durch einen Schalter am Tankdeckel aktiviert werden. Die Einschaltdauer kann durch eine Zeitschaltung be­ grenzt werden.The gas extraction can alternatively via an electri cal pump. In this case it is possible Lich, the electric pump while refueling switch on to accelerate leveling nigen. A corresponding circuit could be used a switch on the fuel cap can be activated. The Duty cycle can be by a timer be limited.

Claims (6)

1. Vorrichtung zur Brennstoffabsaugung aus zwei unterhalb einer Trennwand nicht verbundene Tankkammern eines Satteltanks, wobei in einer die­ ser Tankkammern eine Brennstoffpumpe angeordnet ist und aus dieser Tankkammer Brennstoff über eine Lei­ tung absaugt und der Brennkraftmaschine zugeführt wird, dadurch gekennzeichnet, daß beide Tankkammern (5, 6) durch eine die Trennwand (4) überragende Verbindungsleitung (10) verbunden sind, die in je­ der Tankkammer (5, 6) kurz vor dem Kammerboden en­ det, und daß die Verbindungsleitung (10) an ihrer höchsten Stelle einen Leitungsabzweig (11) auf­ weist, der mit dem Einlaß einer Elektropumpe oder mit einer Vakuumkammer (12) einer Strahlpumpe (13) verbunden ist, wobei die Strahlpumpe (13) unter Ausnutzung der über eine Rücklaufleitung (14) von der Brennkraftmaschine zurückströmenden Brennstoff­ überschußmenge fördert.1.Device for fuel extraction from two non-connected tank chambers of a saddle tank, a fuel pump being arranged in one of these tank chambers, and fuel being sucked out of this tank chamber via a line and being fed to the internal combustion engine, characterized in that both tank chambers ( 5 , 6 ) are connected by a connecting line ( 10 ) projecting above the partition ( 4 ), which det in each of the tank chamber ( 5 , 6 ) shortly before the chamber floor, and that the connecting line ( 10 ) has a line branch ( 11 ) has, which is connected to the inlet of an electric pump or to a vacuum chamber ( 12 ) of a jet pump ( 13 ), the jet pump ( 13 ) conveying excess fuel by utilizing the fuel flowing back via a return line ( 14 ) from the internal combustion engine. 2. Vorrichtung nach Anspruch 1, dadurch ge­ kennzeichnet, daß der Leitungsabzweig (11) durch ein auf den Brennstoffdruck in diesem Abzweig (11) reagierendes Ventil (17) geöffnet oder geschlossen ist.2. Device according to claim 1, characterized in that the line branch (11) is opened or closed by means responsive to the fuel pressure in this branch (11) valve (17) closed. 3. Vorrichtung nach Anspruch 2, dadurch ge­ kennzeichnet, daß das Ventil (17) als Schwimmerven­ til oder als Elektroventil, das auf einen Schwimmerschalter reagiert, ausgebildet ist.3. Apparatus according to claim 2, characterized in that the valve ( 17 ) is designed as a Schwimmerven valve or as an electric valve which responds to a float switch. 4. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Rück­ laufleitung (14) einen in die Tankkammer (5) mit Brennstoffpumpe (7) führenden Abzweig (18) auf­ weist, der durch ein Druckventil (19) kontrolliert wird. 4. Device according to one of the preceding claims, characterized in that the return line ( 14 ) in the tank chamber ( 5 ) with fuel pump ( 7 ) leading branch ( 18 ), which is controlled by a pressure valve ( 19 ). 5. Vorrichtung nach Anspruch 4, dadurch ge­ kennzeichnet, daß der Abzweig (18) in einen Schlingertopf (9) einmündet, in dem die Brennstoff­ pumpe (7) angeordnet ist.5. The device according to claim 4, characterized in that the branch ( 18 ) opens into a swirl pot ( 9 ) in which the fuel pump ( 7 ) is arranged. 6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die elektrische Pumpe während des Betankens durch einen am Tankdeckel befindli­ chen Schalter eingeschaltet und durch eine Zeit­ schaltung ausgeschaltet wird.6. The device according to claim 1, characterized characterized in that the electric pump during refueling through a located on the fuel cap Chen switch turned on and by a time circuit is turned off.
DE19944400919 1994-01-14 1994-01-14 Fuel suction from two chamber saddle tank Withdrawn DE4400919A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944400919 DE4400919A1 (en) 1994-01-14 1994-01-14 Fuel suction from two chamber saddle tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944400919 DE4400919A1 (en) 1994-01-14 1994-01-14 Fuel suction from two chamber saddle tank

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DE4400919A1 true DE4400919A1 (en) 1995-07-20

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DE19944400919 Withdrawn DE4400919A1 (en) 1994-01-14 1994-01-14 Fuel suction from two chamber saddle tank

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002038409A1 (en) * 2000-11-08 2002-05-16 Kautex Textron Gmbh. & Co. Kg. Fuel tank
DE102004021649A1 (en) * 2004-05-03 2005-12-01 Bayerische Motoren Werke Ag Saddle tank especially for motorcycles has baffle element inside tank and with upper surface which with regard to direction of gravity force is located above uppermost point of connecting pipe and extends downwards towards tank wall
DE102005049277A1 (en) * 2005-09-28 2007-03-29 Siemens Ag Mixing tube for use in ejector pump, has pipeline section attached to outlet end, and connected with outlet end in single-piece, where outlet end has inner outline which is designed as diffuser
DE19727227B4 (en) * 1996-07-01 2008-04-24 Walbro Corp., Cass City Fuel supply means
EP2664778A1 (en) * 2011-01-12 2013-11-20 Toyota Jidosha Kabushiki Kaisha Fuel supply device
CN104081036A (en) * 2012-02-02 2014-10-01 丰田自动车株式会社 Fuel supply device
DE102019112741B3 (en) * 2019-05-15 2020-05-20 Ktm Ag Fuel tank arrangement with at least two separate tank bodies

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19727227B4 (en) * 1996-07-01 2008-04-24 Walbro Corp., Cass City Fuel supply means
WO2002038409A1 (en) * 2000-11-08 2002-05-16 Kautex Textron Gmbh. & Co. Kg. Fuel tank
DE10055355C2 (en) * 2000-11-08 2003-07-10 Kautex Textron Gmbh & Co Kg Fuel tank
US6607005B2 (en) 2000-11-08 2003-08-19 Kautex Textron Gmbh & Co. Kg Fuel tank
DE102004021649A1 (en) * 2004-05-03 2005-12-01 Bayerische Motoren Werke Ag Saddle tank especially for motorcycles has baffle element inside tank and with upper surface which with regard to direction of gravity force is located above uppermost point of connecting pipe and extends downwards towards tank wall
DE102005049277A1 (en) * 2005-09-28 2007-03-29 Siemens Ag Mixing tube for use in ejector pump, has pipeline section attached to outlet end, and connected with outlet end in single-piece, where outlet end has inner outline which is designed as diffuser
EP2664778A1 (en) * 2011-01-12 2013-11-20 Toyota Jidosha Kabushiki Kaisha Fuel supply device
EP2664778A4 (en) * 2011-01-12 2014-09-24 Toyota Motor Co Ltd Fuel supply device
CN104081036A (en) * 2012-02-02 2014-10-01 丰田自动车株式会社 Fuel supply device
EP2811145A4 (en) * 2012-02-02 2016-02-17 Toyota Motor Co Ltd Fuel supply device
CN104081036B (en) * 2012-02-02 2017-02-22 丰田自动车株式会社 Fuel supply device
DE102019112741B3 (en) * 2019-05-15 2020-05-20 Ktm Ag Fuel tank arrangement with at least two separate tank bodies
US10981615B2 (en) 2019-05-15 2021-04-20 Ktm Ag Fuel tank arrangement with at least two separate tank bodies

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