DE4142016A1 - Plastics fuel tank for vehicle - incorporates second skin with adsorption particles to prevent fuel emissions - Google Patents

Plastics fuel tank for vehicle - incorporates second skin with adsorption particles to prevent fuel emissions

Info

Publication number
DE4142016A1
DE4142016A1 DE19914142016 DE4142016A DE4142016A1 DE 4142016 A1 DE4142016 A1 DE 4142016A1 DE 19914142016 DE19914142016 DE 19914142016 DE 4142016 A DE4142016 A DE 4142016A DE 4142016 A1 DE4142016 A1 DE 4142016A1
Authority
DE
Germany
Prior art keywords
tank
fuel
fuel tank
vehicle
skin
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Withdrawn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
DE19914142016
Other languages
German (de)
Inventor
Hasso Von Bluecher
Ernest De Dr Ruiter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19914142016 priority Critical patent/DE4142016A1/en
Publication of DE4142016A1 publication Critical patent/DE4142016A1/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Withdrawn legal-status Critical Current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
    • B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
    • 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
    • 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
    • B60K2015/03032—Manufacturing of fuel tanks
    • B60K2015/03046—Manufacturing of fuel tanks made from more than one layer

Landscapes

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

Abstract

The system is used to prevent the emission of fuel from the fuel tank of a vehicle. The tank is made of plastics material and the fuel is surrounded by a gas-tight jacket. Adsorbent materials such as active carbon particles are attached to the side of the jacket facing the fuel tank and the space between the jacket and the fuel tank is purged by air drawn through by the engine. USE/ADVANTAGE - Emission-free fuel tank for vehicle has second skin outside inner skin tank which prevents the escape of fuel vapour emissions to the environment.

Description

Der Durchtritt von Kraftstoff durch die Wand des Tanks eines KFZs ist zwar relativ gering, muß aber im Hinblick auf in den nächsten Jahren zu erwartenden ver­ schärften Auflagen reduziert werden.The passage of fuel through the wall of the tank of a motor vehicle is relative low, but must be considered in view of the ver sharpened requirements can be reduced.

Grundsätzlich gibt es zwei Arten von Kraftstofftanks: den Stahlblechtank und den Kunststofftank. Beim Stahlblechtank sind es die diversen Schweißstellen bzw. Schweißnähte, an denen Kraftstoff austreten kann. Bei sorgfältiger Ausführung kann aber die Emission unter 0,1 g 24 h gehalten werden. Materialbedingt kann der Stahlblechtank jedoch nicht leicht einem vorhandenem, unregelmäßig gestal­ teten Platz angepaßt werden. Der Kunststofftank kann dem verfügbaren Platz we­ sentlich leichter angepaßt werden und ist auch erheblich kostengünstiger. Nachtei­ lig hingegen ist die höhere Kraftstoffemission, die durch die Diffusion durch die Tankwand hindurch verursacht wird. Ein wesentlicher Schritt in die gute Richtung ist die Fluorbehandlung der Tankinnenseite, die heute in den Herstellungsprozeß integriert ist. Trotzdem wird es schwierig sein, die zu erwartenden strengeren Auf­ lagen bezüglich Kraftstoffemission zu erfüllen.There are basically two types of fuel tanks: the sheet steel tank and the Plastic tank. In the steel sheet tank, it is the various welding points or Welds where fuel can leak. With careful execution however, the emission can be kept below 0.1 g for 24 hours. May depend on the material the sheet steel tank, however, does not easily shape an existing, irregular shape be adjusted space. The plastic tank can we the available space be adapted much easier and is also considerably cheaper. Night egg lig, however, is the higher fuel emission caused by the diffusion through the Tank wall is caused. An essential step in the right direction is the fluorine treatment of the inside of the tank that is used today in the manufacturing process is integrated. Even so, it will be difficult to anticipate the more stringent upgrades were to be met with regard to fuel emissions.

Es ist die Aufgabenstellung der vorliegenden Erfindung, die Kraftstoffemission des Kunstofftanks bis auf jene eines guten Stahlblechtanks herabzudrücken. Die Auf­ gabe wurde gelöst durch eine außen angebrachte Hülle, die an ihrer zur Tank­ wand gerichteten Seite 0,5 bis mehrere mm große Adsorberteilchen trägt, die den durch die Tankwand diffundierenden Kraftstoff adsorbieren und gleichzeitig als Ab­ standhalter dienen. Diese zweite "Haut" ist an einem Ende nach außen hin offen, am anderen Ende ist eine dünne Leitung, womit etwas Luft abgesaugt wird, die an­ schließend dem Motor zugeführt wird. Die durch die Tankwand diffundierenden Benzindämpfe werden beim Fahren größtenteils direkt abgesaugt, z. T. auch vorü­ bergehend adsorbiert. Im Ruhezustand werden die Kraftstoffdämpfe an den Ad­ sorbern adsorbiert. Beim Fahren kommt es zu Desorption. Wegen der doch gerin­ gen Mengen austretender Dämpfe sind nur geringe Mengen an Adsorbern - meist unter 100 g - nötig. Die Wahl der Adsorber ist wichtig, da einerseits sehr flüchtige Bestandteile adsorbiert werden müssen, aber andererseits auch leicht desorbiert werden müssen. Gute Desorptionseigenschaften sind der Schlüssel zur Wirksam­ keit des Systems. Geeignete Adsorber sind Aktivkohlen mit großen Mikroporen (20- 50 Å) bzw. poröse Polymere mit ähnlichen Porengrößen. Letztere sind meist auf Basis von Styrol und Divinylbenzol hergestellt. Die Adsorption - man könnte auch von Absorption sprechen - findet in den Hohlräumen zwischen den Polymerketten statt. Als "zweite Haut" für den Tank kommen diverse, relativ gasdichte Folien in Frage, die, wie dem Fachmann bekannt, mit einem Kleber bedruckt oder besprüht und anschließend mit Adsorbern bestreut werden. Gasdichte Folien sind beispiels­ weise doppelt gereckte Polyesterfolien bzw. Polyvinylidenfluoridfolien, aber wegen der vorhandenen Adsorber ist eine sehr hohe Gasdichtigkeit nicht unbedingt erfor­ derlich. Gut geeignet sind weiter Materialien, die sich durch Spritz- bzw. Tiefzieh­ verfahren in einer dem Kraftstofftank angepaßten Form verarbeiten lassen. Dem Fachmann stehen viele Möglichkeiten für eine "zweite Haut" zur Verfügung, so daß die hier genannten lediglich als Anregung zu betrachten sind.It is the object of the present invention, the fuel emission of the Push plastic tanks down to those of a good sheet steel tank. The on Gift was solved by an outer shell attached to the tank wall-facing side carries 0.5 to several mm large adsorber particles that the adsorb fuel diffusing through the tank wall and at the same time as Ab stand servants. This second "skin" is open to the outside at one end, at the other end is a thin line that sucks some air out of the on is finally fed to the engine. The diffusing through the tank wall Gasoline vapors are mostly extracted directly while driving, e.g. T. vorü adsorbed continuously. In the idle state, the fuel vapors are sent to the ad adsorbed. Desorption occurs when driving. Because of that There are only small amounts of adsorbers against quantities of escaping vapors - mostly less than 100 g - necessary. The choice of adsorber is important because, on the one hand, it is very volatile Components must be adsorbed, but on the other hand also slightly desorbed Need to become. Good desorption properties are the key to effectiveness  system. Suitable adsorbers are activated carbons with large micropores (20- 50 Å) or porous polymers with similar pore sizes. The latter are mostly up Base made of styrene and divinylbenzene. Adsorption - you could too speak of absorption - takes place in the voids between the polymer chains instead of. Various, relatively gas-tight films come in as the "second skin" for the tank Question that, as known to the person skilled in the art, is printed or sprayed with an adhesive and then sprinkled with adsorbers. Gastight foils are an example wise double-stretched polyester films or polyvinylidene fluoride films, but because the existing adsorber does not necessarily require very high gas tightness such. Materials that are suitable for injection molding or deep drawing are also suitable Have the process processed in a form adapted to the fuel tank. The Those skilled in the art have many options for a "second skin", so that the ones mentioned here are only to be considered as suggestions.

Claims (5)

1. Verfahren zur Verhinderung der durch Durchtritt von Kraftstoff durch den Tank eines Kraftfahrzeugs entstehenden Emission, dadurch gekennzeichnet, daß der Kraftstoff durch eine gasdichte Hülle umgeben ist, an deren dem Tank zu­ gekehrten Seite Adsorber angebracht sind, wobei der Raum zwischen Hülle und Tank durch vom Motor angesaugte Luft gespült wird.1. A method for preventing the emission caused by the passage of fuel through the tank of a motor vehicle, characterized in that the fuel is surrounded by a gas-tight shell, on the side of which the tank is turned to the side, adsorbers are attached, the space between the shell and the tank being air drawn in by the engine is purged. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Adsorberteil­ chen als Abstandhalter wirken und 0,5 bis 5 mm groß sind.2. The method according to claim 1, characterized in that the adsorber part Chen act as a spacer and are 0.5 to 5 mm in size. 3. Verfahren nach einem oder mehreren der vorhergehenden Erfindung da­ durch gekennzeichnet, daß die Adsorber Aktivkohle bzw. poröse Polymere sind mit einen hohen Anteil an Mikroporen mit Durchmessern von 20-50Å besitzen.3. The method according to one or more of the preceding invention characterized in that the adsorber activated carbon or porous polymers are with a high proportion of micropores with diameters of 20-50Å have. 4. Verfahren nach einem oder mehreren der vorhergehenden Erfindung da­ durch gekennzeichnet, daß die gasdichte Hülle aus einer an der Tankwand anliegenden Folie besteht.4. The method according to one or more of the preceding invention characterized in that the gas-tight envelope from a on the tank wall adjacent film is made. 5. Verfahren nach einem oder mehreren der vorhergehenden Erfindung da­ durch gekennzeichnet, daß die gasdichte Hülle aus einem steifen, tiefgezo­ genen Material besteht, dessen Form dem Kraftstofftank angepaßt ist.5. The method according to one or more of the preceding invention characterized in that the gas-tight envelope from a rigid, deep-drawn gene material exists, the shape of which is adapted to the fuel tank.
DE19914142016 1991-12-19 1991-12-19 Plastics fuel tank for vehicle - incorporates second skin with adsorption particles to prevent fuel emissions Withdrawn DE4142016A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914142016 DE4142016A1 (en) 1991-12-19 1991-12-19 Plastics fuel tank for vehicle - incorporates second skin with adsorption particles to prevent fuel emissions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914142016 DE4142016A1 (en) 1991-12-19 1991-12-19 Plastics fuel tank for vehicle - incorporates second skin with adsorption particles to prevent fuel emissions

Publications (1)

Publication Number Publication Date
DE4142016A1 true DE4142016A1 (en) 1993-06-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914142016 Withdrawn DE4142016A1 (en) 1991-12-19 1991-12-19 Plastics fuel tank for vehicle - incorporates second skin with adsorption particles to prevent fuel emissions

Country Status (1)

Country Link
DE (1) DE4142016A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853097A1 (en) * 1998-11-18 2000-05-31 Mannesmann Vdo Ag Fuel tank
WO2000074965A1 (en) * 1999-06-07 2000-12-14 Solvay (Societe Anonyme) Fuel system for a vehicle
DE10139136A1 (en) * 2001-08-09 2003-02-20 Bayerische Motoren Werke Ag Method for operating vehicle fuel tank system with liquid hydrogen involves producing pressure drop to ventilate interior space of capsule and further processing leaking gas
US6571978B1 (en) 1998-10-29 2003-06-03 Kautex Textron Gmbh & Co. Kg. Fuel tank system for a motor vehicle
US6630216B2 (en) 2000-07-28 2003-10-07 Bayer Aktiengesellschaft Molded plastic article comprising a barrier film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6601000U (en) * 1969-02-27 Hansen Neuerburg & Co Gmbh DOUBLE-WALLED STORAGE CONTAINER WITH STEEL OUTER SHEATH AND PLASTIC INNER CONTAINER
DE3908418A1 (en) * 1989-03-15 1990-09-20 Plasma Electronic Gmbh Process for the internal coating of plastic tanks, and device for the coating
DE8816785U1 (en) * 1988-05-27 1990-10-31 Audi AG, 8070 Ingolstadt Dimensionally stable liquid container
DE3913871A1 (en) * 1989-04-27 1990-11-15 Schmidt Holthausen Hans Joachi Vehicular double-walled fuel tank with level indicator - has air vent in rigid outer tank allowing flexible inner tank to adapt to vol. variation
DE4104658A1 (en) * 1991-02-15 1992-08-20 Mehler Vario System Gmbh Folding roof for vehicle with inner lining - has flexible ties to stretch lining around window openings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6601000U (en) * 1969-02-27 Hansen Neuerburg & Co Gmbh DOUBLE-WALLED STORAGE CONTAINER WITH STEEL OUTER SHEATH AND PLASTIC INNER CONTAINER
DE8816785U1 (en) * 1988-05-27 1990-10-31 Audi AG, 8070 Ingolstadt Dimensionally stable liquid container
DE3908418A1 (en) * 1989-03-15 1990-09-20 Plasma Electronic Gmbh Process for the internal coating of plastic tanks, and device for the coating
DE3913871A1 (en) * 1989-04-27 1990-11-15 Schmidt Holthausen Hans Joachi Vehicular double-walled fuel tank with level indicator - has air vent in rigid outer tank allowing flexible inner tank to adapt to vol. variation
DE4104658A1 (en) * 1991-02-15 1992-08-20 Mehler Vario System Gmbh Folding roof for vehicle with inner lining - has flexible ties to stretch lining around window openings

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6571978B1 (en) 1998-10-29 2003-06-03 Kautex Textron Gmbh & Co. Kg. Fuel tank system for a motor vehicle
DE19853097A1 (en) * 1998-11-18 2000-05-31 Mannesmann Vdo Ag Fuel tank
DE19853097C2 (en) * 1998-11-18 2001-02-01 Mannesmann Vdo Ag Fuel tank
EP1002682A3 (en) * 1998-11-18 2001-07-18 Mannesmann VDO Aktiengesellschaft Fuel tank
US6491180B2 (en) 1998-11-18 2002-12-10 Mannesmann Vdo Ag Fuel tank
WO2000074965A1 (en) * 1999-06-07 2000-12-14 Solvay (Societe Anonyme) Fuel system for a vehicle
BE1012708A3 (en) * 1999-06-07 2001-02-06 Solvay Fuel system for vehicle.
US6634342B1 (en) 1999-06-07 2003-10-21 Solvay (Societe Anonyme) Fuel system for a vehicle
US6630216B2 (en) 2000-07-28 2003-10-07 Bayer Aktiengesellschaft Molded plastic article comprising a barrier film
DE10139136A1 (en) * 2001-08-09 2003-02-20 Bayerische Motoren Werke Ag Method for operating vehicle fuel tank system with liquid hydrogen involves producing pressure drop to ventilate interior space of capsule and further processing leaking gas
US7086236B2 (en) 2001-08-09 2006-08-08 Bayerische Motoren Werke Aktiengesellschaft Method for operating a motor vehicle fuel tank system, especially a cryotank system and corresponding tank system; for example, for liquid hydrogen

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8139 Disposal/non-payment of the annual fee