EP2040949A1 - Fuel container for a motor vehicle - Google Patents

Fuel container for a motor vehicle

Info

Publication number
EP2040949A1
EP2040949A1 EP07787309A EP07787309A EP2040949A1 EP 2040949 A1 EP2040949 A1 EP 2040949A1 EP 07787309 A EP07787309 A EP 07787309A EP 07787309 A EP07787309 A EP 07787309A EP 2040949 A1 EP2040949 A1 EP 2040949A1
Authority
EP
European Patent Office
Prior art keywords
separator
carbon filter
activated carbon
fuel tank
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07787309A
Other languages
German (de)
French (fr)
Inventor
Bernd Rumpf
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2040949A1 publication Critical patent/EP2040949A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • B60K15/035—Fuel tanks characterised by venting means
    • 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
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0854—Details of the absorption canister
    • 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
    • F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters
    • 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
    • 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
    • F02M37/20—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 characterised by means for preventing vapour lock
    • 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
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • B60K2015/03509—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with a droplet separator in the vent line
    • 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
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K2015/03542—Mounting of the venting means
    • B60K2015/03557—Mounting of the venting means comprising elements of the venting device integrated in the fuel tank, e.g. vapor recovery means

Definitions

  • the invention relates to a fuel tank with a chamber for collecting fuel for a motor vehicle with a venting device, with an activated carbon filter and with a fuel delivery unit for promoting ⁇ fuel, wherein the venting device has a separator for separating liquid fuel and gases.
  • Such fuel tanks usually have a plurality of individual, on the outside of the fuel tank mounted vent lines and are known in the practice.
  • the separate rator for the separation of liquid fuel and gases is frequently ⁇ arranges a filler neck of the fuel tank.
  • the activated carbon filter is usually arranged on or in the fuel tank and connected via a further vent line to the separator.
  • a disadvantage of the known fuel tank is that it is very bulky and that the arrangement of arranged outside of the fuel tank components of the vent ⁇ device promotes diffusion of fuel into the environment.
  • the invention is based on the problem, a Kraftstoffbe ⁇ container of the type mentioned in such a way that it is constructed very compact and largely prevents the escape of fuel into the environment.
  • the separator and the activated carbon filter are designed as a structural unit and that the structural unit is disposed within the chamber.
  • the separator and the activated carbon filter are designed as a structural unit and that the structural unit is disposed within the chamber.
  • the fuel tank according to the invention is made particularly compact if the structural unit of the separator and Ak ⁇ tivkohlefilter has a common vessel with a dividing wall for separating the activated carbon filter from the separator.
  • the penetration of fuel into the activated carbon filter can be reliably avoided if the separator and the activated carbon filter are connected via a valve and if that
  • Valve is formed as a roll-over valve and / or splash valve from ⁇ .
  • the valve may, for example, have a float element which, on contact with liquid fuel, closes the connection of the separator to the activated carbon filter.
  • the design of the valve as a roll-over valve prevents leakage of fuel through the activated carbon filter during the rollover of the fuel tank according to the invention having motor vehicle.
  • venting requires according to another advantageous embodiment of the invention only a few components to be mounted when the separator is connected to venting ducts guided in lateral areas of the chamber.
  • a discharge of liquid fuel from the separator designed according to another advantageous embodiment of the invention is particularly simple when in the separator, a suction jet pump is arranged and when the suction jet pump opens into the chamber.
  • Fuel tank contributes when a level sensor is arranged on the structural unit of separator and activated carbon filter.
  • a regeneration of the activated carbon filter in response to a designated event can be carried out easily according to another advantageous embodiment of the invention, if in the connection of the separator and the activated carbon filter, a switchable regeneration valve is arranged and when the regeneration valve is designed for selectively closing or releasing the connection.
  • the activated carbon filter on a guided by the flange line with the environment and with a regeneration line with an internal combustion engine of the motor vehicle is connectable.
  • FIG. 1 is a schematic sectional view through a fuel tank according to the invention
  • FIG. 2 is a view of a venting device with a fuel delivery unit of the fuel tank of Figure 1,
  • FIG. 3 is a schematic sectional view through a structural unit of ventilation device and activated carbon filter with adjacent areas of the fuel tank of Figure 1.
  • a fuel delivery unit 4 and a Ent ⁇ venting device 5 is arranged in the fuel ⁇ tank 1, a fuel delivery unit 4 and a Ent ⁇ venting device 5 is arranged in the fuel ⁇ tank 1, a fuel delivery unit 4 and a Ent ⁇ venting device 5 is arranged in the fuel ⁇ tank 1, a fuel delivery unit 4 and a Ent ⁇ venting device 5 is arranged , The venting means 5 has a close to the fuel delivery unit 4 is arrange ⁇ th vessel 6 and leading in lateral regions of the main chamber 2 of the fuel tank vent lines 1. 7
  • the vent line 7 may also be provided with further, not shown, leading for example in the filler neck 3 vent lines.
  • the fuel delivery unit 4 is biased against the bottom of the fuel tank 1 and is supported on a flange 9 closing a mounting opening 8.
  • FIG. 2 shows a perspective view of the fuel delivery unit 4 from FIG. 2 with the container 6 of the venting device 5.
  • the container 6 of the venting device 5 is fastened to the fuel delivery unit 4 and supports a fill level sensor 10.
  • the container 6 of the venting device 5 connected via a leading into the environment line 11 and a regeneration line 12 to the flange 9.
  • the regeneration line 12 is guided, for example, to an intake manifold, not shown, of the internal combustion engine.
  • Figure 3 shows in a sectional view through the container 6 of the venting device 5 that in the container 6, an activated carbon filter 13 is arranged.
  • the activated carbon filter 13 and the venting device 5 thus form a prefabricatable structural unit, which can be inserted through the mounting opening 8 into the fuel tank 1.
  • a partition wall 14 for separating a Separa ⁇ sector 15 of the activated carbon filter 13.
  • the separator 15 separates fuel from gases and has a suction jet pump 16.
  • the suction jet pump 16 is from the fuel delivery unit 4 of Figure 1 via a filter 17th and a check valve 18 and supplied with fuel as working fluid in the separator 15 promotes accumulated fuel into the Kraftstoffbenzol ⁇ ter 1.
  • valve 19 is designed as a roll-over valve and prevents in a rollover of the motor vehicle leakage of fuel from the fuel tank 1 ⁇ through the activated carbon filter 13 and the lead from the activated carbon filter 13 into the environment line 11. It continues to be Valve 19 is designed as a surge protection valve and prevents, for example, when cornering a sloshing of fuel accumulated in the separator 15 in the activated carbon filter 13. Furthermore, in the connection of the separator 15 with the activated carbon filter 13, a regeneration valve 20 is arranged. This regeneration valve 20 can be closed when the activated carbon filter 13 is regenerated. Furthermore, Figure 3 shows that the container 6 of the structural Unit of separator 13 and activated carbon filter 13 is spaced from the flange 9.

Abstract

A fuel container (1) for a motor vehicle has a structural unit of a separator (15) from a ventilation device (5) and an activated carbon filter (13). The structural unit is arranged in a chamber (2) for the collection of fuel and has a common container (6) for the retention of the separator (15) and the activated carbon filter (13). The container (6) is mounted on a fuel conveyance unit (4).

Description

Beschreibungdescription
Kraftstoffbehälter für ein KraftfahrzeugFuel tank for a motor vehicle
Die Erfindung betrifft einen Kraftstoffbehälter mit einer Kammer zum Sammeln von Kraftstoff für ein Kraftfahrzeug mit einer Entlüftungseinrichtung, mit einem Aktivkohlefilter und mit einer Kraftstoff-Fördereinheit zur Förderung von Kraft¬ stoff, wobei die Entlüftungseinrichtung einen Separator zur Trennung von flüssigem Kraftstoff und Gasen hat.The invention relates to a fuel tank with a chamber for collecting fuel for a motor vehicle with a venting device, with an activated carbon filter and with a fuel delivery unit for promoting ¬ fuel, wherein the venting device has a separator for separating liquid fuel and gases.
Solche Kraftstoffbehälter weisen in der Regel eine Vielzahl von einzelnen, außen am Kraftstoffbehälter montierten Entlüftungsleitungen auf und sind aus der Praxis bekannt. Der Sepa- rator zur Trennung von flüssigem Kraftstoff und Gasen wird häufig an einem Einfüllstutzen des Kraftstoffbehälters ange¬ ordnet. Der Aktivkohlefilter ist meist am oder im Kraftstoffbehälter angeordnet und über eine weitere Entlüftungsleitung mit dem Separator verbunden.Such fuel tanks usually have a plurality of individual, on the outside of the fuel tank mounted vent lines and are known in the practice. The separate rator for the separation of liquid fuel and gases is frequently ¬ arranges a filler neck of the fuel tank. The activated carbon filter is usually arranged on or in the fuel tank and connected via a further vent line to the separator.
Nachteilig bei dem bekannten Kraftstoffbehälter ist, dass er sehr sperrig ist und dass die Anordnung von außerhalb des Kraftstoffbehälters angeordneten Bauteilen der Entlüftungs¬ einrichtung eine Diffusion von Kraftstoff in die Umgebung be- günstigt.A disadvantage of the known fuel tank is that it is very bulky and that the arrangement of arranged outside of the fuel tank components of the vent ¬ device promotes diffusion of fuel into the environment.
Der Erfindung liegt das Problem zugrunde, einen Kraftstoffbe¬ hälter der eingangs genannten Art so weiterzubilden, dass er besonders kompakt aufgebaut ist und ein Entweichen von Kraft- Stoff in die Umgebung weitgehend verhindert.The invention is based on the problem, a Kraftstoffbe ¬ container of the type mentioned in such a way that it is constructed very compact and largely prevents the escape of fuel into the environment.
Dieses Problem wird erfindungsgemäß dadurch gelöst, dass der Separator und der Aktivkohlefilter als bauliche Einheit ausgebildet sind und dass die bauliche Einheit innerhalb der Kammer angeordnet ist. Durch diese Gestaltung lassen sich sämtliche, mit flüssigem oder gasförmigem Kraftstoff in Verbindung stehende Teile der Entlüftungseinrichtung innerhalb des erfindungsgemäßen Kraftstoffbehälters anordnen. Hierdurch gestaltet sich der Kraft- Stoffbehälter besonders kompakt. Weiterhin wird dank der Erfindung das Entweichen von Kraftstoffdämpfen in die Umgebung besonders gering gehalten.This problem is inventively solved in that the separator and the activated carbon filter are designed as a structural unit and that the structural unit is disposed within the chamber. By this design, all, with liquid or gaseous fuel related parts of the venting can be arranged within the fuel tank according to the invention. This makes the fuel tank particularly compact. Furthermore, the escape of fuel vapors into the environment is kept particularly low thanks to the invention.
Die Montage des erfindungsgemäßen Kraftstoffbehälters gestal- tet sich besonders einfach, wenn die bauliche Einheit aus Se¬ parator und Aktivkohlefilter an der Kraftstoff-Fördereinheit befestigt ist. Weiterhin lassen sich hierdurch die bauliche Einheit aus Separator und Aktivkohlefilter und die Kraft¬ stoff-Fördereinheit durch eine einzige Montageöffnung in den erfindungsgemäßen Kraftstoffbehälter einsetzen.The installation of the fuel container of the invention gestal- tet particularly simple when the structural unit comprising Se ¬ parator and activated carbon filter is fixed to the fuel delivery unit. Furthermore, this makes it possible to use the structural unit of separator and activated carbon filter and the fuel delivery unit ¬ through a single mounting hole in the fuel tank according to the invention.
Der erfindungsgemäße Kraftstoffbehälter gestaltet sich besonders kompakt, wenn die bauliche Einheit aus Separator und Ak¬ tivkohlefilter einen gemeinsamen Behälter mit einer Trennwand zur Trennung des Aktivkohlefilters von dem Separator hat.The fuel tank according to the invention is made particularly compact if the structural unit of the separator and Ak ¬ tivkohlefilter has a common vessel with a dividing wall for separating the activated carbon filter from the separator.
Ein Eindringen von Kraftstoff in den Aktivkohlefilter lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung zuverlässig vermeiden, wenn der Separator und der Ak- tivkohlefilter über ein Ventil verbunden sind und wenn dasIn accordance with another advantageous development of the invention, the penetration of fuel into the activated carbon filter can be reliably avoided if the separator and the activated carbon filter are connected via a valve and if that
Ventil als Roll-Over-Ventil und/oder Schwallschutzventil aus¬ gebildet ist. Zur Ausbildung als Schwallschutzventil kann das Ventil beispielsweise ein Schwimmerelement aufweisen, welches beim Kontakt mit flüssigem Kraftstoff die Verbindung des Se- parators mit dem Aktivkohlefilter schließt. Die Ausbildung des Ventils als Roll-Over-Ventil verhindert ein Auslaufen von Kraftstoff durch den Aktivkohlefilter beim Überschlag des den erfindungsgemäßen Kraftstoffbehälter aufweisenden Kraftfahrzeuges .Valve is formed as a roll-over valve and / or splash valve from ¬ . To form a surge protection valve, the valve may, for example, have a float element which, on contact with liquid fuel, closes the connection of the separator to the activated carbon filter. The design of the valve as a roll-over valve prevents leakage of fuel through the activated carbon filter during the rollover of the fuel tank according to the invention having motor vehicle.
Die Entlüftungseinrichtung benötigt gemäß einer anderen vorteilhaften Weiterbildung der Erfindung nur besonders wenige zu montierende Bauteile, wenn der Separator mit in seitliche Bereiche der Kammer geführten Entlüftungsleitungen verbunden ist.The venting requires according to another advantageous embodiment of the invention only a few components to be mounted when the separator is connected to venting ducts guided in lateral areas of the chamber.
Ein Abführen von flüssigem Kraftstoff aus dem Separator gestaltet sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders einfach, wenn in dem Separator eine Saugstrahlpumpe angeordnet ist und wenn die Saugstrahlpumpe in die Kammer mündet .A discharge of liquid fuel from the separator designed according to another advantageous embodiment of the invention is particularly simple when in the separator, a suction jet pump is arranged and when the suction jet pump opens into the chamber.
Zur Verringerung von Kraftstoffemissionen trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn die bauliche Einheit aus Separator und Aktivkohlefilter von einem eine Montageöffnung im Kraftstoffbehälter ver- schließenden Flansch beabstandet ist. Weiterhin lässt sich hierdurch die bauliche Einheit besonders einfach durch die Montageöffnung in den erfindungsgemäßen Kraftstoffbehälter einführen .To reduce fuel emissions, it contributes, according to another advantageous embodiment of the invention, when the structural unit of separator and activated carbon filter from a mounting opening in the fuel tank-closing flange is spaced. Furthermore, this makes it possible to introduce the structural unit particularly easily through the mounting opening in the fuel tank according to the invention.
Zur weiteren Vereinfachung der Montage des erfindungsgemäßenTo further simplify the assembly of the invention
Kraftstoffbehälters trägt es bei, wenn ein Füllstandssensor an der baulichen Einheit aus Separator und Aktivkohlefilter angeordnet ist.Fuel tank contributes when a level sensor is arranged on the structural unit of separator and activated carbon filter.
Eine Regeneration des Aktivkohlefilters in Abhängigkeit von einem vorgesehenen Ereignis lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach durchführen, wenn in der Verbindung des Separators und des Aktivkohlefilters ein schaltbares Regenerationsventil angeordnet ist und wenn das Regenerationsventil zum wahlweisen Verschließen oder Freigeben der Verbindung ausgebildet ist. Durch diese Gestaltung wird eine Beeinflussung der Regeneration des Aktivkohlefilters durch Gasaustausch mit dem Separator zuverlässig vermieden.A regeneration of the activated carbon filter in response to a designated event can be carried out easily according to another advantageous embodiment of the invention, if in the connection of the separator and the activated carbon filter, a switchable regeneration valve is arranged and when the regeneration valve is designed for selectively closing or releasing the connection. By this design, an influence on the regeneration of the activated carbon filter by gas exchange with the separator is reliably avoided.
Zur weiteren Vereinfachung der Regeneration des Aktivkohlefilters trägt es bei, wenn der Aktivkohlefilter über eine durch den Flansch geführte Leitung mit der Umgebung und mit einer Regenerationsleitung mit einer Brennkraftmaschine des Kraftfahrzeuges verbindbar ist.To further simplify the regeneration of the activated carbon filter, it helps if the activated carbon filter on a guided by the flange line with the environment and with a regeneration line with an internal combustion engine of the motor vehicle is connectable.
Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigen in:The invention allows numerous embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. These show in:
Fig. 1 schematisch eine Schnittdarstellung durch einen erfindungsgemäßen Kraftstoffbehälter,1 is a schematic sectional view through a fuel tank according to the invention,
Fig. 2 eine Ansicht auf eine Entlüftungseinrichtung mit einer Kraftstoff-Fördereinheit des Kraftstoffbe- hälters aus Figur 1,2 is a view of a venting device with a fuel delivery unit of the fuel tank of Figure 1,
Fig. 3 schematisch eine Schnittdarstellung durch eine bauliche Einheit aus Entlüftungseinrichtung und Aktivkohlefilter mit angrenzenden Bereichen des Kraftstoffbehälters aus Figur 1.3 is a schematic sectional view through a structural unit of ventilation device and activated carbon filter with adjacent areas of the fuel tank of Figure 1.
Figur 1 zeigt einen Kraftstoffbehälter 1 für ein Kraftfahrzeug zur Versorgung einer nicht dargestellten Brennkraftmaschine mit Kraftstoff mit einer Kammer 2 zum Sammeln von Kraftstoff und mit einem Einfüllstutzen 3. In dem Kraftstoff¬ behälter 1 ist eine Kraftstoff-Fördereinheit 4 und eine Ent¬ lüftungseinrichtung 5 angeordnet. Die Entlüftungseinrichtung 5 hat einen nahe an der Kraftstoff-Fördereinheit 4 angeordne¬ ten Behälter 6 und in seitliche Bereiche der Hauptkammer 2 des Kraftstoffbehälters 1 führende Entlüftungsleitungen 7.1 shows a fuel tank 1 for a motor vehicle for supplying an internal combustion engine with fuel, not shown, with a chamber 2 for collecting fuel and with a filler neck 3. In the fuel ¬ tank 1, a fuel delivery unit 4 and a Ent ¬ venting device 5 is arranged , The venting means 5 has a close to the fuel delivery unit 4 is arrange ¬ th vessel 6 and leading in lateral regions of the main chamber 2 of the fuel tank vent lines 1. 7
Die Entlüftungsleitung 7 kann auch mit weiteren, nicht dargestellten, beispielsweise in den Einfüllstutzen 3 führenden Entlüftungsleitungen versehen sein. Die Kraftstoff-Fördereinheit 4 ist gegen den Boden des Kraftstoffbehälters 1 vor- gespannt und stützt sich an einem eine Montageöffnung 8 verschließenden Flansch 9 ab. Figur 2 zeigt perspektivisch die Kraftstoff-Fördereinheit 4 aus Figur 2 mit dem Behälter 6 der Entlüftungseinrichtung 5. Der Behälter 6 der Entlüftungseinrichtung 5 ist an der Kraftstoff-Fördereinheit 4 befestigt und haltert einen Füllstands- sensor 10. Weiterhin ist der Behälter 6 der Entlüftungseinrichtung 5 über eine in die Umgebung führende Leitung 11 und über eine Regenerierleitung 12 mit dem Flansch 9 verbunden. Die Regenerierleitung 12 ist beispielsweise zu einem nicht dargestellten Ansaugstutzen der Brennkraftmaschine geführt.The vent line 7 may also be provided with further, not shown, leading for example in the filler neck 3 vent lines. The fuel delivery unit 4 is biased against the bottom of the fuel tank 1 and is supported on a flange 9 closing a mounting opening 8. FIG. 2 shows a perspective view of the fuel delivery unit 4 from FIG. 2 with the container 6 of the venting device 5. The container 6 of the venting device 5 is fastened to the fuel delivery unit 4 and supports a fill level sensor 10. Furthermore, the container 6 of the venting device 5 connected via a leading into the environment line 11 and a regeneration line 12 to the flange 9. The regeneration line 12 is guided, for example, to an intake manifold, not shown, of the internal combustion engine.
Figur 3 zeigt in einer Schnittdarstellung durch den Behälter 6 der Entlüftungseinrichtung 5, dass in dem Behälter 6 ein Aktivkohlefilter 13 angeordnet ist. Der Aktivkohlefilter 13 und die Entlüftungseinrichtung 5 bilden damit eine vormon- tierbare bauliche Einheit, welche durch die Montageöffnung 8 in den Kraftstoffbehälter 1 eingesetzt werden kann. In dem Behälter 6 ist eine Trennwand 14 zur Trennung eines Separa¬ tors 15 von dem Aktivkohlefilter 13. Der Separator 15 trennt Kraftstoff von Gasen und hat eine Saugstrahlpumpe 16. Die Saugstrahlpumpe 16 wird von der Kraftstoff-Fördereinheit 4 aus Figur 1 über einen Filter 17 und ein Rückschlagventil 18 mit Kraftstoff als Treibmittel versorgt und fördert in dem Separator 15 angesammelten Kraftstoff in den Kraftstoffbehäl¬ ter 1. Der Separator 15 ist mit dem Aktivkohlefilter 13 über ein Ventil 19 verbunden. Das Ventil 19 ist als Roll-Over- Ventil ausgebildet und verhindert bei einem Überschlag des Kraftfahrzeuges ein Auslaufen von Kraftstoff aus dem Kraft¬ stoffbehälter 1 durch den Aktivkohlefilter 13 und die von dem Aktivkohlefilter 13 in die Umgebung führende Leitung 11. Wei- terhin ist das Ventil 19 als Schwallschutzventil ausgebildet und verhindert beispielsweise bei Kurvenfahrt ein Schwappen von in dem Separator 15 angesammeltem Kraftstoff in den Aktivkohlefilter 13. Weiterhin ist in der Verbindung des Separators 15 mit dem Aktivkohlefilter 13 ein Regenerationsventil 20 angeordnet. Dieses Regenerationsventil 20 lässt sich schließen, wenn der Aktivkohlefilter 13 regeneriert wird. Weiterhin zeigt Figur 3, dass der Behälter 6 der baulichen Einheit aus Separator 13 und Aktivkohlefilter 13 von dem Flansch 9 beabstandet ist. Figure 3 shows in a sectional view through the container 6 of the venting device 5 that in the container 6, an activated carbon filter 13 is arranged. The activated carbon filter 13 and the venting device 5 thus form a prefabricatable structural unit, which can be inserted through the mounting opening 8 into the fuel tank 1. In the container 6 is a partition wall 14 for separating a Separa ¬ sector 15 of the activated carbon filter 13. The separator 15 separates fuel from gases and has a suction jet pump 16. The suction jet pump 16 is from the fuel delivery unit 4 of Figure 1 via a filter 17th and a check valve 18 and supplied with fuel as working fluid in the separator 15 promotes accumulated fuel into the Kraftstoffbehäl ¬ ter 1. the separator 15 is connected to the activated carbon filter 13 via a valve 19th The valve 19 is designed as a roll-over valve and prevents in a rollover of the motor vehicle leakage of fuel from the fuel tank 1 ¬ through the activated carbon filter 13 and the lead from the activated carbon filter 13 into the environment line 11. It continues to be Valve 19 is designed as a surge protection valve and prevents, for example, when cornering a sloshing of fuel accumulated in the separator 15 in the activated carbon filter 13. Furthermore, in the connection of the separator 15 with the activated carbon filter 13, a regeneration valve 20 is arranged. This regeneration valve 20 can be closed when the activated carbon filter 13 is regenerated. Furthermore, Figure 3 shows that the container 6 of the structural Unit of separator 13 and activated carbon filter 13 is spaced from the flange 9.

Claims

Patentansprüche claims
1. Kraftstoffbehälter für ein Kraftfahrzeug mit einer Kammer zum Sammeln von Kraftstoff mit einer Entlüftungseinrich- tung, mit einem Aktivkohlefilter und mit einer Kraftstoff-Fördereinheit zur Förderung von Kraftstoff, wobei die Entlüftungseinrichtung einen Separator zur Trennung von flüssigem Kraftstoff und Gasen hat, dadurch gekennzeichnet, dass der Separator (15) und der Aktiv- kohlefilter (13) als bauliche Einheit ausgebildet sind und dass die bauliche Einheit innerhalb der Kammer (2) angeordnet ist.A fuel tank for a motor vehicle having a chamber for collecting fuel with a venting device, with an activated carbon filter and with a fuel delivery unit for conveying fuel, the venting device having a separator for separating liquid fuel and gases, characterized in that the separator (15) and the active carbon filter (13) are designed as a structural unit and that the structural unit is arranged inside the chamber (2).
2. Kraftstoffbehälter nach Anspruch 1, dadurch gekenn- zeichnet, dass die bauliche Einheit aus Separator (15) und Aktivkohlefilter (13) an der Kraftstoff-Fördereinheit (4) befestigt ist.2. Fuel tank according to claim 1, characterized in that the structural unit of separator (15) and activated carbon filter (13) is attached to the fuel delivery unit (4).
3. Kraftstoffbehälter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die bauliche Einheit aus Sepa¬ rator (15) und Aktivkohlefilter (13) einen gemeinsamen Behälter (6) mit einer Trennwand (14) zur Trennung des Aktivkohlefilters (13) von dem Separator (15) hat.3. Fuel tank according to claim 1 or 2, characterized in that the structural unit of Sepa ¬ generator (15) and activated carbon filter (13) has a common container (6) with a partition (14) for separating the activated carbon filter (13) from the separator (15).
4. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Separator (15) und der Aktivkohlefilter (13) über ein Ventil (19) verbunden sind und dass das Ventil (19) als Roll-Over-Ventil und/oder Schwallschutzventil ausgebildet ist.4. Fuel tank according to at least one of the preceding claims, characterized in that the separator (15) and the activated carbon filter (13) via a valve (19) are connected and that the valve (19) as a roll-over valve and / or splash valve is trained.
5. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Separator (15) mit in seitliche Bereiche der Kammer (2) geführten Entlüftungsleitungen (7) verbunden ist. 5. Fuel tank according to at least one of the preceding claims, characterized in that the separator (15) with in lateral areas of the chamber (2) guided vent lines (7) is connected.
6. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Separator (15) eine Saugstrahlpumpe (16) angeordnet ist und dass die Saugstrahlpumpe (16) in die Kammer (2) mündet .6. Fuel tank according to at least one of the preceding claims, characterized in that in the separator (15), a suction jet pump (16) is arranged and that the suction jet pump (16) opens into the chamber (2).
7. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die bauliche Einheit aus Separator (15) und Aktivkohlefilter (13) von einem eine Montageöffnung (8) im Kraftstoffbe¬ hälter (1) verschließenden Flansch (9) beabstandet ist.7. Fuel tank according to at least one of the preceding claims, characterized in that the structural unit of separator (15) and activated carbon filter (13) by a mounting opening (8) in Kraftstoffbe ¬ container (1) closing the flange (9) is spaced.
8. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Füllstandssensor (10) an der baulichen Einheit aus Separator (15) und Aktivkohlefilter (13) angeordnet ist.8. Fuel tank according to at least one of the preceding claims, characterized in that a level sensor (10) on the structural unit of separator (15) and activated carbon filter (13) is arranged.
9. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in der Verbindung des Separators (15) und des Aktivkohlefil¬ ters (13) ein schaltbares Regenerationsventil (20) ange¬ ordnet ist und dass das Regenerationsventil (20) zum wahlweisen Verschließen oder Freigeben der Verbindung ausgebildet ist.9. Fuel tank according to at least one of the preceding claims, characterized in that in the connection of the separator (15) and the Aktivkohlefil ¬ age (13) a switchable regeneration valve (20) is arranged ¬ and that the regeneration valve (20) for selectively closing or releasing the connection is formed.
10. Kraftstoffbehälter nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Aktivkohlefilter (13) über eine durch den Flansch (9) geführte Leitung (11) mit der Umgebung und mit einer Rege- nerationsleitung (12) mit einer Brennkraftmaschine des Kraftfahrzeuges verbindbar ist. 10. Fuel tank according to at least one of the preceding claims, characterized in that the activated carbon filter (13) via a through the flange (9) guided line (11) with the environment and with a regeneration line (12) with an internal combustion engine of the motor vehicle connectable is.
EP07787309A 2006-07-11 2007-07-10 Fuel container for a motor vehicle Withdrawn EP2040949A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006032311A DE102006032311A1 (en) 2006-07-11 2006-07-11 Fuel tank for a motor vehicle
PCT/EP2007/057034 WO2008006827A1 (en) 2006-07-11 2007-07-10 Fuel container for a motor vehicle

Publications (1)

Publication Number Publication Date
EP2040949A1 true EP2040949A1 (en) 2009-04-01

Family

ID=38596797

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Country Status (7)

Country Link
US (1) US20090321444A1 (en)
EP (1) EP2040949A1 (en)
JP (1) JP5021738B2 (en)
KR (1) KR20090033340A (en)
CN (1) CN101489816B (en)
DE (1) DE102006032311A1 (en)
WO (1) WO2008006827A1 (en)

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Also Published As

Publication number Publication date
DE102006032311A1 (en) 2008-01-24
US20090321444A1 (en) 2009-12-31
CN101489816A (en) 2009-07-22
KR20090033340A (en) 2009-04-02
JP5021738B2 (en) 2012-09-12
WO2008006827A1 (en) 2008-01-17
JP2009542519A (en) 2009-12-03
CN101489816B (en) 2013-06-12

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