EP2228531A2 - Fuel line - Google Patents
Fuel line Download PDFInfo
- Publication number
- EP2228531A2 EP2228531A2 EP10002060A EP10002060A EP2228531A2 EP 2228531 A2 EP2228531 A2 EP 2228531A2 EP 10002060 A EP10002060 A EP 10002060A EP 10002060 A EP10002060 A EP 10002060A EP 2228531 A2 EP2228531 A2 EP 2228531A2
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- EP
- European Patent Office
- Prior art keywords
- fuel
- fuel line
- tpv
- tank
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1397—Single layer [continuous layer]
Definitions
- the invention relates to a fuel line for conveying fuel from and / or into a fuel tank.
- Tank lines in particular Intanktechnischen be used in fuel tanks for motor vehicles and used to promote fuel from the tank to the fuel pump.
- a time and cost saving installation is desired.
- a fuel line which has a good resistance to aggressive media from the outside and also good resistance to fuels inside, is in the EP 1 635 101 A described.
- the line has a complex structure of five layers, comprising 3 main layers and 2 adhesion promoter layers, wherein a main layer is formed as an intermediate layer of PA 6.
- the EP 1 942 296 A shows a fluid conduit for hydrocarbonaceous, pressurized fluids. Due to the mechanical properties, which are the focus of this application, this cable is made of PA 6.10. In particular, the processing speed in the extrusion is relatively high and is about 20 m / min, making it particularly economical. However, practice has shown that PA-based materials can not be permanently exposed to fuel.
- the object is to propose a fuel line for the promotion of fuel from one and / or in a fuel tank (tank line), which is both easy to process and has good mechanical properties, as well as a high chemical resistance.
- the invention provides the fuel line for conveying fuel from and / or into a fuel tank according to claim 1, wherein the fuel line consists essentially of F-TPV.
- the material F-TPV comprises a thermoplastic matrix of a continuous phase fluorothermoplastic in which dynamically vulcanized elastomer particles of fluororubber are dispersed, the vulcanized domains forming the soft phase.
- fluorothermoplastics for example, e.g. Ethylene-tetrafluoroethylene (ETFE), ethylene-perfluoroethylene-propylene (EFEP), perfluoroethylene-propylene (FEP), ethylene-chlorotrifluoroethylene (ECTFE), etc.
- Suitable fluorinated rubber are copolymers and terpolymers of vinylidene fluoride (VDF), tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) with a content of 10 to 60% by weight, depending on the desired product property (modulus, rigidity / flexibility) with a fluorine content of approx 66% - 71%, whereby the corresponding product properties can vary within wide limits.
- VDF vinylidene fluoride
- TFE tetrafluoroethylene
- HFP hexafluoropropylene
- the production but also the disposal of the fuel line according to the invention can be substantially simplified, because essentially only one material to provide ready to process and dispose of later, resulting in economic and, above all, environmentally beneficial.
- the fuel line according to the invention can be carried out in particular in a completely flushed with fuel state (in-tank application) on the face resistant to fuels of various kinds and quality, so that the risk of delamination is significantly reduced.
- the fuel line consists of more than 90% by weight, preferably more than 95% by weight, preferably more than 99% by weight, of F-TPV. If the proportion of a material other than F-TPV is less than 10%, the risk of a malfunction of the fuel line is minimal, even in the case of sustained exposure to aggressive fuels. A certain proportion of a material other than F-TPV may even be desirable, for example to reduce the overall cost of the fuel line or to provide the fuel line with certain functional sections.
- the fuel line is designed as a single-layer F-TPV monotube.
- the fuel line comprises a single, continuous from the inner circumference to the outer periphery of the fuel line layer, which consists of 100% F-TPV.
- the production designed especially easy.
- the fuel line according to this design form due to the single-layer structure has no layer boundaries and thus no weaknesses in terms of delamination.
- the fuel line is at least partially formed as a smooth tube.
- Smooth pipe sections are particularly stable and kink resistant due to the constant cross-sectional shape. It may be desirable to provide the fuel line with smooth-tube sections at suitable locations in order, for example, to reduce the flow-through cross-section of the pipeline, for example. B. by buckling of the fuel line to prevent.
- the fuel line is at least partially formed as a corrugated pipe. Due to corrugated pipe sections, the fuel line can be specifically equipped with high flexibility and high kink resistance, so that the fuel line can also run along strongly curved lines, without the risk of reducing the flow-through cross-section is, for. B. due to a buckling of the fuel line.
- a preferred aspect of the invention relates to a fuel tank with a fuel line according to one of the preceding embodiments, wherein the fuel line is at least partially within the fuel tank.
- the advantages of the fuel line according to the invention are particularly evident, because the fuel acts both on the inner circumference and on the outer circumference of the fuel line.
- the fuel line terminates in the fuel tank.
- the advantages of the fuel line according to the invention are even more apparent.
- the inner layers of a multilayer fuel line are inevitably exposed to the fuel, so that in the multilayer fuel line there is always the risk of delamination originating from the layer boundaries.
- the fuel line according to the invention consists essentially of F-TPV, which is highly resistant to fuels of various kinds and quality, a delamination of the fuel line can also and especially be prevented when the end face of the fuel line is exposed to the fuel.
- the fuel line extends from a port on the tank wall into the fuel tank.
- the fuel line is 100% F-TPV and the material F-TPV exposed on the inner circumference, on the outer circumference and on the front side of the fuel line, because the fuel on the inner circumference, on the outer circumference and acting on the front side of the fuel line.
- a further fuel line extends from a port on the tank wall outside of the fuel tank, wherein the further fuel line has at least one inner layer of F-TPV.
- the material F-TPV is exposed only on the inner periphery because the fuel acts on the inner circumference of the fuel pipe but not on the outer circumference or the end face of the fuel line, so that there is no danger of delamination of the fuel line from the front side.
- the single-layer F-TPV monotube made of solid material may be more expensive than a fuel line with only one inner layer of F-TPV, so that dividing the fuel line on the tank wall makes sense for cost reasons.
- FIG. 1 shows a perspective view of the fuel line 1 according to the invention, which is provided in particular for the promotion of fuel from one and / or in a fuel tank.
- the fuel line 1 according to the invention is characterized in that it consists essentially of F-TPV, which means in the context of this invention that the Fuel line 1 to more than 90 wt .-%, preferably more than 95 wt .-%, preferably more than 99 wt .-%, consists of F-TPV. Particularly preferred is the case that the fuel line 1 to 100 wt .-% consists of F-TPV and is formed as a single layer F-TPV monotube.
- the fuel line 1 can not delaminate, in particular due to the material F-TPV, which is particularly resistant to a wide variety of fuels, as a result of which the risk of functional failures is considerably reduced.
- Material F-TPV for the tank applications described in this invention comprises a thermoplastic matrix of a fluorothermoplastic, e.g. Ethylene-tetrafluoroethylene (ETFE), ethylene-perfluoroethylene-propylene (EFEP), perfluoroethylene-propylene (FEP), ethylene-chlorotrifluoroethylene (ECTFE), etc. as a continuous phase, in which dynamically vulcanized fluororubber (FPM) elastomer particles are dispersed, with the vulcanized domains of FPM being the soft phase form.
- a fluorothermoplastic e.g. Ethylene-tetrafluoroethylene (ETFE), ethylene-perfluoroethylene-propylene (EFEP), perfluoroethylene-propylene (FEP), ethylene-chlorotrifluoroethylene (ECTFE), etc.
- FPM dynamically vulcanized fluororubber
- Suitable fluorinated rubber are copolymers and terpolymers of vinylidene fluoride (VDF), tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) (fluorine content of 66% to 71%) with a content of 10 to 60% by weight, depending on the desired product property (modulus, Stiffness / flexibility and the corresponding product properties can vary within wide limits).
- VDF vinylidene fluoride
- TFE tetrafluoroethylene
- HFP hexafluoropropylene
- fuel line 1 is a single layer over the entire length between two end faces 10 formed as F-TPV monotube and comprises a single, from the inner circumference Ui to the outer circumference Ua continuous layer, which consists of 100% F-TPV, so that the material F -PV on the inner circumference Ui, on the outer circumference Ua and on the end faces 10 of the fuel line 1 is exposed. Since there are no layer boundaries, there is no risk of delamination.
- the fuel line 1 comprises a corrugated pipe section 11, which is arranged between two smooth pipe sections 12.
- the fuel line 1 may be formed at least in sections as a smooth tube and at least partially as a corrugated pipe.
- An outer diameter of the fuel line 1 is, for example, between 5 and 20 mm, preferably between 8 and 12 mm, preferably 10 mm.
- a wall thickness of the fuel line 1 is, for example, between 0.5 and 5 mm, preferably between 1 and 3 mm, preferably 2 mm.
- FIG. 2 shows a fuel tank 2 according to the invention with an internal fuel line 1 according to the invention, which is formed in one layer as F-TPV monotube.
- the Fuel line 1 extends from a port 3 on the tank wall 20 into the fuel tank 2 and terminates in the fuel tank 2.
- another fuel line 4 extends outside the fuel tank 2 to a fuel pump (not shown), wherein the further fuel line 4 has an inner layer of F-TPV and the remaining layers of this fuel line 4 consist of a different material from F-TPV.
- An embodiment of the fuel line 4 made of F-TPV solid material is not required because the fuel outside the fuel tank 2 acts neither on an outer periphery nor on the end faces of the fuel line 4 directly.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
Die Erfindung betrifft eine Kraftstoffleitung zur Förderung von Kraftstoff aus einem und/oder in einen Kraftstofftank.The invention relates to a fuel line for conveying fuel from and / or into a fuel tank.
Tankleitungen, insbesondere Intankleitungen werden in Kraftstofftanks für Kraftfahrzeuge eingesetzt und zur Förderung von Kraftstoff aus dem Tank zur Kraftstoffpumpe verwendet. Aus dieser besonderen Verwendung heraus ergibt sich die Anforderung an die Rohre bzw. Leitungen, dass sowohl die Innenseite als auch die Außenseite kraftstoffbeständig ausgeführt sein muß. Darüber hinaus ist eine zeit- und kostensparende Montage erwünscht.Tank lines, in particular Intankleitungen be used in fuel tanks for motor vehicles and used to promote fuel from the tank to the fuel pump. For this particular use, the requirement for the pipes or lines, that both the inside and the outside must be made fuel-resistant results. In addition, a time and cost saving installation is desired.
Aus der Druckschrift
Eine Kraftstoffleitung, welche eine gute Beständigkeit gegen aggressive Medien von außen und eine ebenfalls gute Beständigkeit gegenüber Kraftstoffen innen aufweist, ist in der
Die
Von daher besteht die Aufgabe, eine Kraftstoffleitung zur Förderung von Kraftstoff aus einem und/oder in einen Kraftstofftank (Tankleitung) vorzuschlagen, die sowohl gut verarbeitbar ist und gute mechanische Eigenschaften aufweist, als auch eine hohe chemische Beständigkeit besitzt.Therefore, the object is to propose a fuel line for the promotion of fuel from one and / or in a fuel tank (tank line), which is both easy to process and has good mechanical properties, as well as a high chemical resistance.
Um die vorstehend genannte Aufgabe zu lösen, stellt die Erfindung die Kraftstoffleitung zur Förderung von Kraftstoff aus einem und/oder in einen Kraftstofftank nach Anspruch 1 bereit, wobei die Kraftstoffleitung im wesentlichen aus F-TPV besteht. Das Material F-TPV umfasst eine thermoplastische Matrix aus einem Fluorthermoplast als kontinuierliche Phase, darin dispergiert dynamisch vulkanisierte Elastomerpartikel aus Fluorkautschuk, wobei die vulkanisierten Domänen die Weichphase bilden. Als Fluorthermoplast können bspw. z.B. Ethylen-Tetrafluorethylen (ETFE), Ethylen-Perfluorethylenpropylen (EFEP), Perfluorethylenpropylen (FEP), Ethylen-Chlorotrifluoroethylen (ECTFE) etc. eingesetzt werden. Als Fluorkautschuk kommen Co- und Terpolymere aus Vinylidenfluorid (VDF), Tetrafluorethylen (TFE) und Hexafluorpropylen (HFP) in Frage mit einem Gehalt von 10 bis 60 Gew.% je nach gewünschter Produkteigenschaft (Modul, Steifigkeit/Flexibilität) bei einem Fluorgehalt von ca. 66% - 71 %, wobei die korrespondierenden Produkteigenschaften in weiten Grenzen variieren können. Das Material hat sich in Versuchen als hoch beständig gegenüber Kraftstoffen verschiedenster Art und Güte erwiesen. Im Gegensatz zu herkömmlichen Lösungsansätzen, die insbesondere Mehrschichtrohre vorsehen, kann nicht nur die Fertigung sondern auch die Entsorgung der erfindungsgemäßen Kraftstoffleitung wesentlich vereinfacht werden, weil im wesentlichen nur ein einziges Material bereit zu stellen, zu verarbeiten und später auch zu entsorgen ist, was sich in ökonomischer und vor allem in ökologischer Hinsicht als vorteilhaft herausstellt. Die erfindungsgemäße Kraftstoffleitung kann insbesondere in einem voll mit Kraftstoff umspülten Zustand (In-Tank-Anwendung) an der Stirnfläche beständig gegenüber Kraftstoffen verschiedenster Art und Güte ausgeführt werden, so dass die Gefahr der Delamination erheblich verringert wird.In order to achieve the above object, the invention provides the fuel line for conveying fuel from and / or into a fuel tank according to
Es kann sich als vorteilhaft erweisen, wenn die Kraftstoffleitung zu mehr als 90 Gew.-%, vorzugsweise zu mehr als 95 Gew.-%, bevorzugt zu mehr als 99 Gew.-%, aus F-TPV besteht. Sofern der Anteil eines von F-TPV verschiedenen Materials unter 10% liegt, ist die Gefahr eines Funktionsausfalls der Kraftstoffleitung auch bei dauerhafter Einwirkung von aggressiven Kraftstoffen minimal. Ein gewisser Anteil eines von F-TPV verschiedenen Materials kann sogar wünschenswert sein, bspw. um die Gesamtkosten der Kraftstoffleitung zu verringern oder um die Kraftstoffleitung mit bestimmten Funktionsabschnitten auszustatten.It may prove advantageous if the fuel line consists of more than 90% by weight, preferably more than 95% by weight, preferably more than 99% by weight, of F-TPV. If the proportion of a material other than F-TPV is less than 10%, the risk of a malfunction of the fuel line is minimal, even in the case of sustained exposure to aggressive fuels. A certain proportion of a material other than F-TPV may even be desirable, for example to reduce the overall cost of the fuel line or to provide the fuel line with certain functional sections.
Es kann sich als hilfreich erweisen, wenn die Kraftstoffleitung einschichtig als F-TPV-Monorohr ausgebildet ist. Dabei umfasst die Kraftstoffleitung eine einzige, vom Innenumfang bis zum Außenumfang der Kraftstoffleitung durchgehende Schicht, die zu 100% aus F-TPV besteht. Bei dieser Ausführung der Kraftstoffleitung gestaltet sich die Fertigung besonders einfach. Außerdem verfügt die Kraftstoffleitung nach dieser Gestaltungsform aufgrund der Einschichtstruktur über keinerlei Schichtgrenzen und damit auch über keinerlei Schwachstellen im Hinblick auf Delamination.It may prove helpful if the fuel line is designed as a single-layer F-TPV monotube. In this case, the fuel line comprises a single, continuous from the inner circumference to the outer periphery of the fuel line layer, which consists of 100% F-TPV. In this embodiment of the fuel line, the production designed especially easy. In addition, the fuel line according to this design form due to the single-layer structure has no layer boundaries and thus no weaknesses in terms of delamination.
Es kann sich als nützlich erweisen, wenn die Kraftstoffleitung zumindest abschnittsweise als Glattrohr ausgebildet ist. Glattrohrabschnitte sind aufgrund der konstanten Querschnittsform besonders stabil und knickbeständig. Es kann wünschenswert sein, die Kraftstoffleitung an geeigneten Stellen mit Glattrohrabschnitten zu versehen, um bspw. eine Verringerung des durchströmbaren Leitungsquerschnitts, z. B. durch Einknicken der Kraftstoffleitung, zu verhindern.It may prove useful if the fuel line is at least partially formed as a smooth tube. Smooth pipe sections are particularly stable and kink resistant due to the constant cross-sectional shape. It may be desirable to provide the fuel line with smooth-tube sections at suitable locations in order, for example, to reduce the flow-through cross-section of the pipeline, for example. B. by buckling of the fuel line to prevent.
Es kann sich als praktisch erweisen, wenn die Kraftstoffleitung zumindest abschnittsweise als Wellrohr ausgebildet ist. Aufgrund von Wellrohrabschnitten kann die Kraftstoffleitung gezielt mit hoher Flexibilität bei gleichzeitig hoher Knickbeständigkeit ausgestattet werden, so dass die Kraftstoffleitung auch entlang stark gekrümmter Linien verlaufen kann, ohne dass die Gefahr der Verringerung des durchströmbaren Leitungsquerschnitts besteht, z. B. aufgrund eines Einknickens der Kraftstoffleitung.It may prove to be practical if the fuel line is at least partially formed as a corrugated pipe. Due to corrugated pipe sections, the fuel line can be specifically equipped with high flexibility and high kink resistance, so that the fuel line can also run along strongly curved lines, without the risk of reducing the flow-through cross-section is, for. B. due to a buckling of the fuel line.
Ein bevorzugter Aspekt der Erfindung betrifft einen Kraftstofftank mit einer Kraftstoffleitung nach einer der vorangegangenen Ausführungen, wobei die Kraftstoffleitung zumindest abschnittsweise innerhalb des Kraftstofftanks liegt. Bei dieser sog. In-Tank-Anwendung kommen die Vorteile der erfindungsgemäßen Kraftstoffleitung besonders deutlich zum Vorschein, weil der Kraftstoff sowohl auf den Innenumfang als auch auf den Außenumfang der Kraftstoffleitung einwirkt.A preferred aspect of the invention relates to a fuel tank with a fuel line according to one of the preceding embodiments, wherein the fuel line is at least partially within the fuel tank. In this so-called in-tank application, the advantages of the fuel line according to the invention are particularly evident, because the fuel acts both on the inner circumference and on the outer circumference of the fuel line.
Es kann sich als vorteilhaft erweisen, wenn die Kraftstoffleitung im Kraftstofftank endet. Bei dieser Ausführung kommen die Vorteile der erfindungsgemäßen Kraftstoffleitung noch deutlicher zum Vorschein. Gerade an der Stirnseite sind die inneren Schichten einer mehrschichtigen Kraftstoffleitung zwangsläufig dem Kraftstoff ausgesetzt, so dass bei der mehrschichtigen Kraftstoffleitung immer die Gefahr einer von den Schichtgrenzen ausgehenden Delamination besteht. Weil die erfindungsgemäße Kraftstoffleitung jedoch im wesentlichen aus F-TPV besteht, welches in hohem Maße beständig gegenüber Kraftstoffen verschiedenster Art und Güte ist, kann eine Delamination der Kraftstoffleitung auch und vor allem dann verhindert werden, wenn die Stirnseite der Kraftstoffleitung dem Kraftstoff ausgesetzt ist.It may prove advantageous if the fuel line terminates in the fuel tank. In this embodiment, the advantages of the fuel line according to the invention are even more apparent. Especially at the front side, the inner layers of a multilayer fuel line are inevitably exposed to the fuel, so that in the multilayer fuel line there is always the risk of delamination originating from the layer boundaries. However, because the fuel line according to the invention consists essentially of F-TPV, which is highly resistant to fuels of various kinds and quality, a delamination of the fuel line can also and especially be prevented when the end face of the fuel line is exposed to the fuel.
Es kann sich als hilfreich erweisen, wenn das Material F-TPV am Innenumfang, am Außenumfang und/oder an der Stirnseite der Kraftstoffleitung exponiert ist. Bei dieser Ausführung bestehen keinerlei Schwachstellen an den Teilen der Kraftstoffleitung, auf welche der Kraftstoff einwirkt und von welchen eine Delamination der Kraftstoffleitung ausgehen könnte.It may prove helpful if the material F-TPV is exposed on the inner circumference, on the outer circumference and / or on the front side of the fuel line. In this embodiment, there are no weak points on the parts of the fuel line, which acts on the fuel and from which could be a delamination of the fuel line.
Es kann sich als vorteilhaft erweisen, wenn sich die Kraftstoffleitung ausgehend von einem Anschluss an der Tankwand in den Kraftstofftank erstreckt. Insbesondere im Tank ist es von Nutzen, wenn die Kraftstoffleitung zu 100% aus F-TPV besteht und das Material F-TPV am Innenumfang, am Außenumfang und an der Stirnseite der Kraftstoffleitung exponiert ist, weil der Kraftstoff auf den Innenumfang, auf den Außenumfang und auf die Stirnseite der Kraftstoffleitung einwirkt.It may prove advantageous if the fuel line extends from a port on the tank wall into the fuel tank. In particular, in the tank, it is useful if the fuel line is 100% F-TPV and the material F-TPV exposed on the inner circumference, on the outer circumference and on the front side of the fuel line, because the fuel on the inner circumference, on the outer circumference and acting on the front side of the fuel line.
Es kann sich als praktisch erweisen, wenn sich eine weitere Kraftstoffleitung ausgehend von einem Anschluss an der Tankwand außerhalb des Kraftstofftanks erstreckt, wobei die weitere Kraftstoffleitung zumindest eine Innenschicht aus F-TPV aufweist. Außerhalb des Tanks, wenn der Kraftstoff im Inneren der Kraftstoffleitung zu einer Kraftstoffpumpe oder dgl. geführt wird, ist es ausreichend, wenn das Material F-TPV nur am Innenumfang exponiert ist, weil der Kraftstoff nur auf den Innenumfang der Kraftstoffleitung einwirkt, nicht aber auf den Außenumfang oder die Stirnseite der Kraftstoffleitung, so dass die Gefahr einer von der Stirnseite ausgehenden Delamination der Kraftstoffleitung nicht besteht. Das aus Vollmaterial gefertigte, einschichtige F-TPV-Monorohr ist ggf. teurer als eine Kraftstoffleitung mit nur einer Innenschicht aus F-TPV, so dass eine Teilung der Kraftstoffleitung an der Tankwand aus Kostengründen durchaus sinnvoll erscheint.It may prove practical if a further fuel line extends from a port on the tank wall outside of the fuel tank, wherein the further fuel line has at least one inner layer of F-TPV. Outside the tank, when the fuel inside the fuel pipe is led to a fuel pump or the like, it is sufficient if the material F-TPV is exposed only on the inner periphery because the fuel acts on the inner circumference of the fuel pipe but not on the outer circumference or the end face of the fuel line, so that there is no danger of delamination of the fuel line from the front side. The single-layer F-TPV monotube made of solid material may be more expensive than a fuel line with only one inner layer of F-TPV, so that dividing the fuel line on the tank wall makes sense for cost reasons.
- Figur 1FIG. 1
- zeigt eine perspektivische Ansicht einer erfindungsgemäßen Kraftstoffleitung.shows a perspective view of a fuel line according to the invention.
- Figur 2FIG. 2
- zeigt eine schematische Ansicht eines erfindungsgemäßen Kraftstofftanks mit der erfindungsgemäßen Kraftstoffleitung.shows a schematic view of a fuel tank according to the invention with the fuel line according to the invention.
Das Material F-TPV für die im Rahmen dieser Erfindung beschriebenen Tank-Anwendungen umfasst eine thermoplastische Matrix aus einem Fluorthermoplast z.B. Ethylen-Tetrafluorethylen (ETFE), Ethylen-Perfluorethylenpropylen (EFEP), Perfluorethylenpropylen (FEP), Ethylen-Chlorotrifluoroethylen (ECTFE) etc. als kontinuierliche Phase, darin dispergiert dynamisch vulkanisierte Elastomerpartikel aus Fluorkautschuk (FPM), wobei die vulkanisierten Domänen aus FPM die Weichphase bilden. Als Fluorkautschuk kommen Co- und Terpolymere aus Vinylidenfluorid (VDF), Tetrafluorethylen (TFE) und Hexafluorpropylen (HFP) in Frage (Fluorgehalt von 66% - 71%) mit einem Gehalt von 10 bis 60 Gew.% je nach gewünschter Produkteigenschaft (Modul, Steifigkeit/Flexibilität und die korrespondierenden Produkteigenschaften können in weiten Grenzen variieren).Material F-TPV for the tank applications described in this invention comprises a thermoplastic matrix of a fluorothermoplastic, e.g. Ethylene-tetrafluoroethylene (ETFE), ethylene-perfluoroethylene-propylene (EFEP), perfluoroethylene-propylene (FEP), ethylene-chlorotrifluoroethylene (ECTFE), etc. as a continuous phase, in which dynamically vulcanized fluororubber (FPM) elastomer particles are dispersed, with the vulcanized domains of FPM being the soft phase form. Suitable fluorinated rubber are copolymers and terpolymers of vinylidene fluoride (VDF), tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) (fluorine content of 66% to 71%) with a content of 10 to 60% by weight, depending on the desired product property (modulus, Stiffness / flexibility and the corresponding product properties can vary within wide limits).
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Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102009012311A DE102009012311A1 (en) | 2009-03-09 | 2009-03-09 | Fuel line |
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EP2228531A2 true EP2228531A2 (en) | 2010-09-15 |
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EP10002060A Withdrawn EP2228531A2 (en) | 2009-03-09 | 2010-03-01 | Fuel line |
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US (1) | US20100227099A1 (en) |
EP (1) | EP2228531A2 (en) |
DE (1) | DE102009012311A1 (en) |
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---|---|---|---|---|
ES2701951T3 (en) | 2016-02-10 | 2019-02-26 | Veritas Ag | Hose for a fluid and procedure of production of said hose |
FR3062446B1 (en) * | 2017-02-02 | 2020-07-31 | Tristone Flowtech Solutions Tfs | AUTOMOTIVE VEHICLE FLUID CIRCULATION DUCT, ITS MANUFACTURING PROCESS AND ITS USE AS A MOTOR VEHICLE ENGINE FLUID COOLING PIPE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1443205A2 (en) | 2003-01-29 | 2004-08-04 | Hitachi Unisia Automotive Ltd. | Fuel supply system for internal combustion engine and fuel transfer tube |
EP1635101A1 (en) | 2004-09-08 | 2006-03-15 | Nobel Plastiques | Multilayer polymer pipe |
EP1942296A1 (en) | 2006-12-22 | 2008-07-09 | Ems-Chemie Ag | Hydraulic line, in particular coupling line and method for its production |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4952636A (en) * | 1987-12-31 | 1990-08-28 | E. I. Du Pont De Nemours And Company | Modified polytetrafluoroethylene resins and blends thereof |
DE4238605C2 (en) * | 1992-11-17 | 1995-02-02 | Rasmussen Gmbh | Flexible fluid line |
DE4330855C1 (en) * | 1993-09-11 | 1994-10-13 | Technoflow Tube Systems Gmbh | Use of a plastics pipe as a crash-protected motor-vehicle fuel line |
US5622210A (en) * | 1995-06-12 | 1997-04-22 | Lsp Products Group, Inc. | Flexible hose with composite core |
DE19637276A1 (en) * | 1996-09-13 | 1998-03-19 | Bosch Gmbh Robert | Fuel feed device for motor vehicles |
US6102011A (en) * | 1998-11-07 | 2000-08-15 | Uis, Inc. | In-tank fuel delivery system for marine vessels |
JP2001165383A (en) * | 1999-12-13 | 2001-06-22 | Toyoda Gosei Co Ltd | Fuel hose and manufacturing method |
US6508275B1 (en) * | 2000-03-15 | 2003-01-21 | Salflex Polymers Ltd. | Flexible fuel filler pipe |
JP2001336688A (en) * | 2000-05-30 | 2001-12-07 | Tokai Rubber Ind Ltd | Connecting method for resin hose, and connecting structure for resin hose using the method |
US20050155662A1 (en) * | 2002-06-03 | 2005-07-21 | Tao Nie | Low-cost, low permeation multi-layer tubing having intermediate polymeric alloy layer |
US7156125B2 (en) * | 2003-09-15 | 2007-01-02 | Teleflex Fluid Systems, Inc. | Coaxial hose assembly and method of making same |
US7413697B2 (en) * | 2004-06-21 | 2008-08-19 | Freudenberg-Nok General Partnership | Pre-molding heat treatment of dynamic vulcanizates of fluorocarbon elastomers |
US7357424B2 (en) * | 2004-11-03 | 2008-04-15 | Parker-Hannifin Corporation | Plastic guard for airbrake tubing and coils |
US20060099368A1 (en) * | 2004-11-08 | 2006-05-11 | Park Edward H | Fuel hose with a fluoropolymer inner layer |
WO2006057332A1 (en) * | 2004-11-26 | 2006-06-01 | Daikin Industries, Ltd. | Thermoplastic polymer composition |
JP2006234131A (en) * | 2005-02-28 | 2006-09-07 | Toyoda Gosei Co Ltd | Bellows tube |
JP2007046772A (en) * | 2005-07-13 | 2007-02-22 | Toyoda Gosei Co Ltd | Resin pipe and resin mold article |
US20080023093A1 (en) * | 2006-07-27 | 2008-01-31 | Dayco Products, Llc | Method for manufacturing a hose |
EP2067648B1 (en) * | 2006-09-29 | 2016-10-26 | Daikin Industries, Ltd. | Fuel tank and method for producing the same |
-
2009
- 2009-03-09 DE DE102009012311A patent/DE102009012311A1/en not_active Ceased
-
2010
- 2010-03-01 EP EP10002060A patent/EP2228531A2/en not_active Withdrawn
- 2010-03-08 US US12/719,570 patent/US20100227099A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1443205A2 (en) | 2003-01-29 | 2004-08-04 | Hitachi Unisia Automotive Ltd. | Fuel supply system for internal combustion engine and fuel transfer tube |
EP1635101A1 (en) | 2004-09-08 | 2006-03-15 | Nobel Plastiques | Multilayer polymer pipe |
EP1942296A1 (en) | 2006-12-22 | 2008-07-09 | Ems-Chemie Ag | Hydraulic line, in particular coupling line and method for its production |
Also Published As
Publication number | Publication date |
---|---|
DE102009012311A1 (en) | 2010-09-16 |
US20100227099A1 (en) | 2010-09-09 |
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