DE10013589A1 - Car fuel tank with venting line has insert in venting line which leaves free passage cross section in normal conditions but closes it on contact with liquid fuel - Google Patents
Car fuel tank with venting line has insert in venting line which leaves free passage cross section in normal conditions but closes it on contact with liquid fuelInfo
- Publication number
- DE10013589A1 DE10013589A1 DE2000113589 DE10013589A DE10013589A1 DE 10013589 A1 DE10013589 A1 DE 10013589A1 DE 2000113589 DE2000113589 DE 2000113589 DE 10013589 A DE10013589 A DE 10013589A DE 10013589 A1 DE10013589 A1 DE 10013589A1
- Authority
- DE
- Germany
- Prior art keywords
- insert
- fuel tank
- venting line
- contact
- 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- Withdrawn
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
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03519—Valve arrangements in the vent line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
Die Erfindung betrifft einen Kraftstofftank eines Kraftfahrzeuges, insbesonde re eines Personenkraftwagens, mit einer Entlüftungsleitung, die bei extremer Schräglage oder bei einem Überschlag des Kraftfahrzeuges selbsttätig ver schlossen wird. Zum technischen Umfeld wird lediglich beispielshalber auf die DE 197 05 440 A1 verwiesen.The invention relates to a fuel tank of a motor vehicle, in particular re of a passenger car, with a ventilation line, which in extreme Inclined position or automatically ver at a rollover of the motor vehicle is closed. The technical environment is only mentioned as an example referred to DE 197 05 440 A1.
Üblicherweise besitzen Personenkraftwagen (Pkws) einen einzigen Kraft stofftank, der über ein endseitig mittels eines Deckels verschließbares Ein füllrohr befüllbar ist. In diesem Kraftstofftank mündet ferner zumindest eine Entlüftungsleitung, über die beim Betanken das im Kraftstoffbehälter oder Kraftstofftank vorhandene Kraftstoff-Luftgemisch nach außen gelangen kann. Über diese Entlüftungsleitung wird ferner bei Kraftstoffentnahme aus dem Tank Luft in den Tank nachgesaugt.Passenger cars (passenger cars) usually have a single force fabric tank, which can be closed by means of a lid filling tube is fillable. At least one opens into this fuel tank Vent line via which in the fuel tank or when refueling Existing fuel-air mixture can escape to the outside can. This vent line also turns off when fuel is removed air is sucked into the tank.
Um zu verhindern, daß Kraftstoff aus dem Tank bei einer extremen Schräg lage des Kraftfahrzeuges oder bei einem unfallbedingten Überschlag des selben nach außen in die Umgebung gelangen kann, ist in der Entlüftungs leitung ein sog. Roll-Over-Ventil vorgesehen, welches diese bspw. in den genannten Gefahrensituationen versperrt. Ein derartiges Roll-Over-Ventil ist in der eingangs genannten Schrift gezeigt. To prevent fuel from the tank at an extreme slant location of the motor vehicle or in the event of an accident-related rollover of the the same can get out into the environment is in the vent a so-called roll-over valve is provided, which, for example, in the blocked dangerous situations. Such a roll-over valve is shown in the font mentioned above.
Diese bekannte Roll-Over-Ventiltechnik, zumeist in Form eines schwerkraft geführten Kugelventiles, erfordert einen nicht unerheblichen Aufwand an Montage- und Prozeßtechnik sowie Kosten.This well-known roll-over valve technology, mostly in the form of a gravity guided ball valve, requires a not inconsiderable effort Assembly and process technology as well as costs.
Eine einfachere, neuartige Schutzmaßnahme für derartige Gefahrensituatio nen aufzuzeigen, ist Aufgabe der vorliegenden Erfindung.A simpler, new protective measure for such dangerous situations To show NEN is the object of the present invention.
Die Lösung dieser Aufgabe ist gekennzeichnet durch einen in der Entlüf tungsleitung vorgesehenen Einsatz, der unter üblichen Betriebszuständen einen ausreichenden freien Durchtrittsquerschnitt freigibt, hingegen bei Kontakt mit flüssigem Kraftstoff seine Form und/oder sein Volumen derart verändert, daß die Entlüftungsleitung abgesperrt wird. Vorteilhafte Weiterbil dungen sind Inhalt der Unteransprüche.The solution to this problem is characterized by one in the vent line provided for use under normal operating conditions releases a sufficient free passage cross section, however at Contact with liquid fuel its shape and / or its volume changed that the vent line is shut off. Advantageous training are contents of the subclaims.
Hier wird die Verwendung eines bspw. bzw. bevorzugt ringförmigen oder halbkreisförmigen Einsatzes in der Entlüftungsleitung vorgeschlagen, der im normalen Zustand die Funktion der Entlüftungsleitung in keiner Weise be einträchtigt, d. h. der im normalen Betrieb eine lichte Weite entsprechend den Entlüftungserfordernissen aufweist. Bei Berührung mit flüssigem Kraftstoff hingegen, d. h. in einer der genannten Gefahrensituationen, in denen flüssi ger Kraftstoff aus dem Tank in die Entlüftungsleitung(en) und somit zum be sagten Einsatz gelangt, verformt sich dieser aufgrund des Kontaktes mit flüssigem Kraftstoff derart, daß die Entlüftungsleitung(en) sicher verschlos sen wird/werden. Somit kann dann (im Falle eines Überschlags oder dgl.) kein Kraftstoff über die Entlüftungsleitung(en) aus dem Tank nach außen gelangen.Here the use of a, for example, or preferably annular or semicircular use in the vent line proposed in normal condition the function of the ventilation line in no way be impaired, d. H. which in normal operation has a clear width corresponding to Has ventilation requirements. When in contact with liquid fuel however, d. H. in one of the dangerous situations mentioned, in which liquid fuel from the tank into the vent line (s) and thus to be said insert arrives, it deforms due to the contact with liquid fuel in such a way that the vent line (s) is securely closed will / will. Thus (in the event of a rollover or the like) no fuel to the outside via the vent line (s) from the tank reach.
In diesem Zusammenhang sei darauf hingewiesen, daß mit einem erfin dungsgemäßen Einsatz das bisher übliche Roll-Over-Ventil nicht weiter be nötigt wird. In this context it should be noted that with an invented use according to the invention the roll-over valve which was previously customary is required.
Seine gewünschte Funktion erfüllen, nämlich bei Kontakt mit flüssigem Kraft stoff durch eine Formänderung die Entlüftungsleitung absperren, kann der Einsatz durch eine Formänderung mit oder ohne Volumenänderung. Bei spielsweise kann der Einsatz durch einen Gelpfropfen oder dgl. gebildet sein, wobei das Gelmaterial bei Berührung mit flüssigem Kraftstoff aufquillt und dadurch den zunächst freien Durchtrittsquerschnitt in der Entlüftungs leitung versperrt. Grundsätzlich kann die Formänderung dabei auf einer phy sikalischen oder einer chemischen Reaktion beruhen.Fulfill its desired function, namely when it comes into contact with liquid power Shut off the ventilation line by changing the shape Use through a change in shape with or without volume change. At for example, the insert can be formed by a gel plug or the like be, the gel material swells when in contact with liquid fuel and thereby the initially free passage cross-section in the vent line blocked. Basically, the shape change can be on a phy sical or a chemical reaction.
Bevorzugt ist die Form- und/oder Volumenänderung des Einsatzes reversi bel, d. h. daß dann, wenn der Einsatz nicht weiterhin mit flüssigem Kraftstoff in Kontakt bleibt, der Einsatz wieder seine ursprüngliche Form annimmt, also daß bspw. das Gelmaterial wieder auf seine normale Betriebsgröße schrumpft, so daß die Entlüftungsleitung in diesem unkritischen Zustand selbsttätig wieder freigegeben wird.The change in shape and / or volume of the insert is preferably reversi bel, d. H. that if the insert does not continue with liquid fuel stays in contact, the insert returns to its original shape, so that, for example, the gel material is back to its normal size shrinks, leaving the vent line in this uncritical state released automatically.
Insbesondere durch eine entsprechende Modulierung des den genannten Einsatz bildenden Materials kann der Einsatz im verformten, die Entlüf tungsleitung absperrenden Zustand bei ausreichendem Überdruck durch drückbar sein. Bildlich ausgedrückt kann der absperrende Gelpfropfen durchdrückt werden, um bei extremem Druckanstieg im Kraftstofftank ein Bersten desselben zu verhindern, d. h. unter derart kritischen Zuständen wird die abgesperrte Entlüftungsleitung dann wieder freigegeben.In particular by appropriate modulation of the above Insert forming material can be used in the deformed, the vent line to shut off the line if there is sufficient overpressure be pushable. Figuratively speaking, the blocking plug of gel can to be pushed through in the event of extreme pressure rise in the fuel tank To prevent bursting thereof, d. H. under such critical conditions the blocked vent line is then released again.
Durch die Verwendung eines derartigen Einsatzes wird die Systemsicherheit erhöht. Vorteilhafterweise ist das vorgeschlagene System weitgehend unab hängig von möglicherweise die Funktion beeinträchtigenden Verschmutzun gen. Stets wird in kritischen Situationen ein Austreten von flüssigem Kraft stoff über die Entlüftungsleitung vermieden.By using such an insert, system security becomes elevated. Advantageously, the proposed system is largely independent depending on contamination that may impair its function In critical situations, there is always an escape of liquid power Avoided material via the ventilation line.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000113589 DE10013589A1 (en) | 2000-03-18 | 2000-03-18 | Car fuel tank with venting line has insert in venting line which leaves free passage cross section in normal conditions but closes it on contact with liquid fuel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000113589 DE10013589A1 (en) | 2000-03-18 | 2000-03-18 | Car fuel tank with venting line has insert in venting line which leaves free passage cross section in normal conditions but closes it on contact with liquid fuel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10013589A1 true DE10013589A1 (en) | 2001-09-20 |
Family
ID=7635499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2000113589 Withdrawn DE10013589A1 (en) | 2000-03-18 | 2000-03-18 | Car fuel tank with venting line has insert in venting line which leaves free passage cross section in normal conditions but closes it on contact with liquid fuel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10013589A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4041795A1 (en) * | 1990-12-24 | 1992-07-02 | Jun Johann Hogemann | Throttle for fluid flow vol. control - has flexible, fluid guide tube, whose both open ends are clamped by annular holders |
US5173095A (en) * | 1990-09-12 | 1992-12-22 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel control canister containing absorbent swelling by absorbing liquid fuel |
DE4312374A1 (en) * | 1993-04-17 | 1994-10-20 | Daimler Benz Ag | Ventilation and venting device of a vehicle fuel tank |
EP0869022A2 (en) * | 1997-03-31 | 1998-10-07 | Ford Motor Company | Fuel tank vapour control apparatus |
FR2774951A1 (en) * | 1998-02-19 | 1999-08-20 | Plastic Omnium Cie | Fuel tank with vent system assisting filling and preventing excess internal pressure |
AT3803U1 (en) * | 1999-09-01 | 2000-08-25 | Steyr Daimler Puch Ag | FLOAT VALVE FOR THE FUEL TANK SYSTEM OF A MOTOR VEHICLE |
-
2000
- 2000-03-18 DE DE2000113589 patent/DE10013589A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5173095A (en) * | 1990-09-12 | 1992-12-22 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel control canister containing absorbent swelling by absorbing liquid fuel |
DE4041795A1 (en) * | 1990-12-24 | 1992-07-02 | Jun Johann Hogemann | Throttle for fluid flow vol. control - has flexible, fluid guide tube, whose both open ends are clamped by annular holders |
DE4312374A1 (en) * | 1993-04-17 | 1994-10-20 | Daimler Benz Ag | Ventilation and venting device of a vehicle fuel tank |
EP0869022A2 (en) * | 1997-03-31 | 1998-10-07 | Ford Motor Company | Fuel tank vapour control apparatus |
FR2774951A1 (en) * | 1998-02-19 | 1999-08-20 | Plastic Omnium Cie | Fuel tank with vent system assisting filling and preventing excess internal pressure |
AT3803U1 (en) * | 1999-09-01 | 2000-08-25 | Steyr Daimler Puch Ag | FLOAT VALVE FOR THE FUEL TANK SYSTEM OF A MOTOR VEHICLE |
Non-Patent Citations (3)
Title |
---|
00266208 A * |
06129310 A * |
JP Patent Abstracts of Japan: 57074215 A * |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8130 | Withdrawal |