EP2228531A2 - Conduite de carburant - Google Patents

Conduite de carburant Download PDF

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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
Authority
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.)
Withdrawn
Application number
EP10002060A
Other languages
German (de)
English (en)
Inventor
Marc Dr. Van Hooren
Andreas Seyler
Wilfried ZÜLCH
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.)
Veritas AG
Original Assignee
Veritas AG
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 Veritas AG filed Critical Veritas AG
Publication of EP2228531A2 publication Critical patent/EP2228531A2/fr
Withdrawn legal-status Critical Current

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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
    • F02M37/0011—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
    • 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
    • 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.

Landscapes

  • 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)
EP10002060A 2009-03-09 2010-03-01 Conduite de carburant Withdrawn EP2228531A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009012311A DE102009012311A1 (de) 2009-03-09 2009-03-09 Kraftstoffleitung

Publications (1)

Publication Number Publication Date
EP2228531A2 true EP2228531A2 (fr) 2010-09-15

Family

ID=42229091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10002060A Withdrawn EP2228531A2 (fr) 2009-03-09 2010-03-01 Conduite de carburant

Country Status (3)

Country Link
US (1) US20100227099A1 (fr)
EP (1) EP2228531A2 (fr)
DE (1) DE102009012311A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3205493B2 (fr) 2016-02-10 2025-07-02 Veritas Ag Tuyau souple pour un fluide et procédé de production d'un tel tuyau
FR3062446B1 (fr) * 2017-02-02 2020-07-31 Tristone Flowtech Solutions Tfs Conduite de circulation de fluide pour vehicule automobile, son procede de fabrication et son utilisation en tant que tuyau de refroidissement de fluide moteur de vehicule automobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1443205A2 (fr) 2003-01-29 2004-08-04 Hitachi Unisia Automotive Ltd. Système d'alimentation en carburant pour moteur à combustion interne et tube de transfert d'élément combustible
EP1635101A1 (fr) 2004-09-08 2006-03-15 Nobel Plastiques Conduite multicouche PA/PO-PA/TPE-E
EP1942296A1 (fr) 2006-12-22 2008-07-09 Ems-Chemie Ag Ligne hydraulique, en particulier ligne de couplage et son procédé de fabrication

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US4952636A (en) * 1987-12-31 1990-08-28 E. I. Du Pont De Nemours And Company Modified polytetrafluoroethylene resins and blends thereof
DE4238605C2 (de) * 1992-11-17 1995-02-02 Rasmussen Gmbh Flexible Fluidleitung
DE4330855C1 (de) * 1993-09-11 1994-10-13 Technoflow Tube Systems Gmbh Verwendung eines Kunststoffrohres als crashgesicherte Kraftfahrzeug-Kraftstoffleitung
US5622210A (en) * 1995-06-12 1997-04-22 Lsp Products Group, Inc. Flexible hose with composite core
DE19637276A1 (de) * 1996-09-13 1998-03-19 Bosch Gmbh Robert Kraftstoffördereinrichtung für Kraftfahrzeuge
US6102011A (en) * 1998-11-07 2000-08-15 Uis, Inc. In-tank fuel delivery system for marine vessels
JP2001165383A (ja) * 1999-12-13 2001-06-22 Toyoda Gosei Co Ltd 燃料ホースおよび燃料ホースの製造方法
US6508275B1 (en) * 2000-03-15 2003-01-21 Salflex Polymers Ltd. Flexible fuel filler pipe
JP2001336688A (ja) * 2000-05-30 2001-12-07 Tokai Rubber Ind Ltd 樹脂ホースの接続方法およびそれを用いた樹脂ホースの接続構造
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
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JP2006234131A (ja) * 2005-02-28 2006-09-07 Toyoda Gosei Co Ltd 蛇腹チューブ
JP2007046772A (ja) * 2005-07-13 2007-02-22 Toyoda Gosei Co Ltd 樹脂パイプおよび樹脂成形品
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WO2008041645A1 (fr) * 2006-09-29 2008-04-10 Daikin Industries, Ltd. Réservoir de carburant et son procédé de production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1443205A2 (fr) 2003-01-29 2004-08-04 Hitachi Unisia Automotive Ltd. Système d'alimentation en carburant pour moteur à combustion interne et tube de transfert d'élément combustible
EP1635101A1 (fr) 2004-09-08 2006-03-15 Nobel Plastiques Conduite multicouche PA/PO-PA/TPE-E
EP1942296A1 (fr) 2006-12-22 2008-07-09 Ems-Chemie Ag Ligne hydraulique, en particulier ligne de couplage et son procédé de fabrication

Also Published As

Publication number Publication date
US20100227099A1 (en) 2010-09-09
DE102009012311A1 (de) 2010-09-16

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