DE102014223129A1 - Method for producing a vehicle - Google Patents
Method for producing a vehicle Download PDFInfo
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- DE102014223129A1 DE102014223129A1 DE102014223129.9A DE102014223129A DE102014223129A1 DE 102014223129 A1 DE102014223129 A1 DE 102014223129A1 DE 102014223129 A DE102014223129 A DE 102014223129A DE 102014223129 A1 DE102014223129 A1 DE 102014223129A1
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- Germany
- Prior art keywords
- fuel tank
- autofrettage
- fuel
- vehicle
- pressure
- 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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- 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
- B60K15/03006—Gas tanks
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
- F17C1/04—Protecting sheathings
- F17C1/06—Protecting sheathings built-up from wound-on bands or filamentary material, e.g. wires
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- 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
- B60K2015/03309—Tanks specially adapted for particular fuels
- B60K2015/03315—Tanks specially adapted for particular fuels for hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0604—Liners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0619—Single wall with two layers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/068—Special properties of materials for vessel walls
- F17C2203/0695—Special properties of materials for vessel walls pre-constrained
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/224—Press-fitting; Shrink-fitting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/011—Improving strength
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Abstract
Bei einem Verfahren nach der Erfindung wird ein Fahrzeug hergestellt, mit wenigstens einem Kraftstoffbehälter, der als Druckbehälter zur Speicherung eines Kraftstoffes ausgebildet ist und aus einem metallischen Liner besteht, der außen mit Faserverbundwerkstoff verstärkt, nach dem Aushärten des Matrixwerkstoffes wenigstens einer Autofrettage-Behandlung durch Innendruckerhöhung unterworfen wird. Das Verfahren ist dadurch gekennzeichnet, dass der Kraftstoffbehälter wenigstens vor seiner letzten Autofrettage-Behandlung in das Fahrzeug eingebaut wird.In a method according to the invention, a vehicle is produced, with at least one fuel tank, which is designed as a pressure vessel for storing a fuel and consists of a metallic liner reinforced with fiber composite outside, after curing of the matrix material at least one autofrettage treatment by internal pressure increase is subjected. The method is characterized in that the fuel tank is installed in the vehicle at least before its last autofrettage treatment.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Fahrzeugs, insbesondere eines Kraftfahrzeugs, mit einem Drucktank für Wasserstoff, nach dem Oberbegriff des ersten Anspruchs.The invention relates to a method for producing a vehicle, in particular a motor vehicle, with a pressure tank for hydrogen, according to the preamble of the first claim.
Es ist bereits bekannt, Wasserstoff als Kraftstoff für Kraftfahrzeuge zu verwenden und diesen dazu in einem Drucktank unter Überdruck zu speichern. Derartige Drucktanks können aus Stahl oder Aluminium bestehen. Für einen höheren Fülldruck kann zum Beispiel ein solcher, im Wesentlichen zylindrischer Tank durch einen Faserverbundwerkstoff mit beispielsweise Glas- und/oder Kohlenstofffasern umwickelt werden.It is already known to use hydrogen as a fuel for motor vehicles and to store this in a pressure tank under pressure. Such pressure tanks may be made of steel or aluminum. For example, for a higher inflation pressure, such a substantially cylindrical tank may be wrapped by a fiber composite with, for example, glass and / or carbon fibers.
Ein solcher Hochdruckbehälter ist aus der
Wird also der Druckbehälter durch seinen Inhalt bedruckt, wird zunächst eine Druckvorspannung im Liner aus der Autofrettage ausgeglichen und erst bei weiter ansteigendem Innendruck die Behälterwandung nach außen hin auf Zug beansprucht.Thus, if the pressure vessel is printed by its contents, first a pressure bias in the liner from the autofrettage is compensated and only when the internal pressure continues to increase does the container wall become stressed towards the outside.
Bei der Herstellung eines solchen Druckbehälters ist es üblich, dass für eine Behälterserie werkstoffabhängig ein fester Autofrettagedruck festgelegt und für alle Behälter dieser Serie angewandt wird. In Werkstoffnormen wird dazu für die Streckgrenze ein vom Werkstoff erfüllbarer Mindestwert angegeben, der für eine Auslegung gegen Versagen benötigt wird. Bei der Autofrettage wird eine bestimmte plastische Dehnung angestrebt. Der optimale Grad der Qualitätsverbesserung durch die Autofrettage wird also durch eine solche Vorbestimmung des maximalen Autofrettagedrucks erzielt, mit dem die höchstmögliche Vorspannung im Liner durch Plastifizierung erzeugt werden kann. Das Resultat hängt dabei in erster Linie von der tatsächlichen Streckgrenze des Linerwerkstoffes ab, da durch eine diese annähernd überschreitende Belastung bei der Autofrettage der Wert der späteren Vorspannung im Liner bestimmt wird.In the production of such a pressure vessel, it is common for a container series material-dependent fixed a fixed autofrettage and applied to all containers of this series. In material standards, the yield strength is given a minimum value that can be met by the material and is required for design against failure. Autofrettage aims at a certain plastic elongation. The optimal degree of quality improvement by the autofrettage is thus achieved by such a predetermination of the maximum autofrettage pressure, with which the highest possible bias in the liner can be generated by plasticization. The result depends primarily on the actual yield strength of the liner material, since the value of the later bias in the liner is determined by an approximately exceeding stress in autofrettage.
Typ-3 Druckbehälter für Kraftfahrzeuge werden bei ihrer Autofrettage-Behandlung als Komponente üblicherweise durch Wasser oder ein Wasser-Glycol Gemisch beim hydraulischen Autofrettageprozess mit einem Mehrfachen des Betriebsdruckes soweit bedruckt, dass das metallische Linermaterial plastifiziert. Aufgrund der elastischen Eigenschaften des umgebenden CFKs steht der Liner danach unter Vorspannung, was die Lebensdauer des Kraftstoffbehälters erhöht. Im Zeitraum bis zum Einbau ins Kraftfahrzeug jedoch ist der Kraftstoffbehälter aufgrund der Vorspannung nahe an der Druckfließgrenze des Linermaterials und reagiert empfindlich auf hohe Temperaturen, da diese die Vorspannung abbauen und so den Konditionierungszustand beeinflussen können.Type-3 pressure vessels for motor vehicles are usually printed in their autofrettage treatment as component usually by water or a water-glycol mixture in the hydraulic autofrettage process at a multiple of the operating pressure that plasticized the metallic liner material. Due to the elastic properties of the surrounding CFRP, the liner is then biased, which increases the life of the fuel tank. However, in the period up to installation in the motor vehicle, the fuel tank is close to the pressure fluid limit of the liner material due to the bias and is sensitive to high temperatures, as these can reduce the preload and thus affect the conditioning state.
Der Erfindung liegt deshalb die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Kraftfahrzeugs mit einem Kraftstoffbehälter der eingangs genannten Art so weiter zu entwickeln, dass dieses oben genannten Nachteil vermeidet.The invention is therefore based on the object, so to develop a method for producing a motor vehicle with a fuel tank of the type mentioned that avoids this disadvantage mentioned above.
Die Aufgabe wird durch die Merkmale und Verfahrensschritte des ersten Anspruchs gelöst. Bevorzugte Ausgestaltungen der Erfindung beschreiben die abhängigen Ansprüche.The object is achieved by the features and method steps of the first claim. Preferred embodiments of the invention describe the dependent claims.
Bei einem Verfahren nach der Erfindung wird ein Fahrzeug hergestellt, mit wenigstens einem Kraftstoffbehälter, der als Druckbehälter zur Speicherung eines Kraftstoffes ausgebildet ist und aus einem metallischen Liner besteht, der außen mit Faserverbundwerkstoff verstärkt, nach dem Aushärten des Matrixwerkstoffes wenigstens einer Autofrettage-Behandlung durch Innendruckerhöhung unterworfen wird. Das Verfahren ist dadurch gekennzeichnet, dass der Kraftstoffbehälter wenigstens vor seiner letzten Autofrettage-Behandlung in das Fahrzeug eingebaut wird.In a method according to the invention, a vehicle is produced, with at least one fuel tank, which is designed as a pressure vessel for storing a fuel and consists of a metallic liner reinforced with fiber composite outside, after curing of the matrix material at least one autofrettage treatment by internal pressure increase is subjected. The method is characterized in that the Fuel tank is installed at least before his last autofrettage treatment in the vehicle.
Das hat den Vorteil, dass ein Kraftstoffbehälter in ein Kraftfahrzeug eingebaut wird, der der Autofrettage-Behandlung noch nicht oder noch nicht abschließend unterzogen wurde. Es kann so während einer eventuellen Lagerungszeit des Kraftstoffbehälters kein Rückfließvorgang im Linerwerkstoff stattfinden, da dieser noch nicht bis an seine Streckgrenze verformt wurde.This has the advantage that a fuel tank is installed in a motor vehicle, the autofrettage treatment has not or not yet been finalized. It can take place during a possible storage time of the fuel tank no return flow in the liner material, since this has not yet been deformed to its yield point.
Bevorzugte Verfahrensgestaltungen sehen vor, dass die Innendruckerhöhung für die Autofrettage-Behandlung des Kraftstoffbehälters in diesem durch eine Befüllung mit tiefkaltem Medium, insbesondere Kraftstoff erfolgt. Dabei ist „tiefkalt” so zu verstehen, dass das Medium eine Temperatur besitzt, die durchaus im kryogenen Bereich angesiedelt ist oder zum Beispiel im Temperaturbereich zwischen 20 Kelvin und 200 Kelvin, bevorzugt zwischen 30 Kelvin und 80 Kelvin. Eine solche einzige oder letzte Autofrettagebehandlung des Kraftstoffbehälters mit Kraftstoff in kryogenem Zustand, insbesondere bei der Erstbetankung des Kraftfahrzeugs, hat den Vorteil, dass durch die tiefe Temperatur der Liner schrumpft und die Verstärkung des CFKs entfällt, wodurch sich der Liner bei wesentlich geringeren Drücken plastisch verformen lässt. Das CFK erfährt bei gleicher Konditionierung weniger Dehnung, was die Vorspannung verringert. Auch kann der Kraftstoffbehälter im verbauten Zustand konditioniert werden, da der Druck niedriger ist und die Peripherie entsprechend nicht auf den sonst sehr hohen Druck ausgelegt sein muss, wodurch die Empfindlichkeit bzgl. hoher Temperaturen entfällt. Der Autofrettage-Prozess kann bei der Herstellung der Kraftfahrzeugs integriert werden, insbesondere bei der Initialbetankung, was eine Verfolgung und damit Kontrolle des Prozesses ermöglicht.Preferred process designs provide that the internal pressure increase for the autofrettage treatment of the fuel tank in this takes place by filling with cryogenic medium, in particular fuel. Here, "cryogenic" is to be understood as meaning that the medium has a temperature which is certainly located in the cryogenic range or, for example, in the temperature range between 20 Kelvin and 200 Kelvin, preferably between 30 Kelvin and 80 Kelvin. Such a single or last Autofrettagebehandlung the fuel tank with fuel in a cryogenic state, especially in the first refueling of the motor vehicle, has the advantage that shrinks by the low temperature of the liner and eliminates the gain of CFKs, causing the liner plastically deform at significantly lower pressures leaves. The CFRP undergoes less stretching with the same conditioning, which reduces the preload. Also, the fuel tank can be conditioned in the installed state, since the pressure is lower and the periphery must not be designed accordingly to the otherwise very high pressure, whereby the sensitivity with respect to high temperatures is eliminated. The Autofrettage process can be integrated in the production of the motor vehicle, in particular during the initial refueling, which enables tracking and thus control of the process.
Ebenso können vorteilhafterweise alle Autofrettage-Behandlungen des Kraftstoffbehälters durch Befüllung mit tiefkaltem Kraftstoff, insbesondere nach dessen Einbau ins Kraftfahrzeug, erfolgen. Oder es wird alternativ nur eine einzige Autofrettage-Behandlung des Kraftstoffbehälters, insbesondere durch Befüllung mit tiefkaltem Medium Kraftstoff, insbesondere mit Kraftstoff und bevorzugt mit Wasserstoff, durchgeführt. Bevorzugt wird zur Umwicklung des Liners Faserverbundwerkstoff aus Kohlenstofffasern und/oder Glasfasern verwendet. Dabei kann der Matrixwerkstoff ein duroplastischer oder ein thermoplastischer Kunststoff sein. Und vorteilhafterweise ist der Drucktank ein Typ 3 Druckbehälter, das heißt, ein komplett umwickelter metallischer Zylinder mit einem Dom auf jeder Seite. Die Verstärkungsfasern werden bevorzugt in einem Wickelverfahren aufgebracht, wobei dann die Vorspannung auf den Liner mittels einer Faserwickelmaschine aufgebracht werden kann.Likewise, advantageously all autofrettage treatments of the fuel tank by filling with tiefkaltem fuel, especially after its installation in the motor vehicle, take place. Or it is alternatively only a single autofrettage treatment of the fuel tank, in particular by filling with cryogenic medium fuel, in particular with fuel and preferably with hydrogen performed. Fiber-composite material made of carbon fibers and / or glass fibers is preferably used for wrapping the liner. In this case, the matrix material may be a duroplastic or a thermoplastic material. And advantageously, the pressure tank is a Type 3 pressure vessel, that is, a completely wrapped metallic cylinder with a dome on each side. The reinforcing fibers are preferably applied in a winding process, in which case the bias can be applied to the liner by means of a fiber winding machine.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102013003207 A1 [0003] DE 102013003207 A1 [0003]
Claims (7)
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DE102014223129.9A DE102014223129A1 (en) | 2014-11-12 | 2014-11-12 | Method for producing a vehicle |
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DE102014223129.9A DE102014223129A1 (en) | 2014-11-12 | 2014-11-12 | Method for producing a vehicle |
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DE102014223129A1 true DE102014223129A1 (en) | 2016-05-12 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017212424A1 (en) * | 2017-07-20 | 2019-01-24 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for producing a cryogenic pressure vessel |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102013003207A1 (en) | 2013-02-26 | 2014-09-11 | Mt Aerospace Ag | Process for the production of high-pressure tanks, in particular for use in the cryogenic sector |
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Patent Citations (1)
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DE102013003207A1 (en) | 2013-02-26 | 2014-09-11 | Mt Aerospace Ag | Process for the production of high-pressure tanks, in particular for use in the cryogenic sector |
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DE102017212424A1 (en) * | 2017-07-20 | 2019-01-24 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for producing a cryogenic pressure vessel |
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