DE102010061048A1 - Method for ventilating fuel tank of tank system in combustion engine of motor car, involves utilizing energy generated by exhausting and burning of fuel storing components for charging vehicle battery - Google Patents
Method for ventilating fuel tank of tank system in combustion engine of motor car, involves utilizing energy generated by exhausting and burning of fuel storing components for charging vehicle battery Download PDFInfo
- Publication number
- DE102010061048A1 DE102010061048A1 DE201010061048 DE102010061048A DE102010061048A1 DE 102010061048 A1 DE102010061048 A1 DE 102010061048A1 DE 201010061048 DE201010061048 DE 201010061048 DE 102010061048 A DE102010061048 A DE 102010061048A DE 102010061048 A1 DE102010061048 A1 DE 102010061048A1
- Authority
- DE
- Germany
- Prior art keywords
- combustion engine
- absorption element
- vehicle battery
- fuel
- internal combustion
- 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- Withdrawn
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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
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
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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
- 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
- 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
- B60K2015/03514—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with vapor recovery means
-
- 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
- B60K2015/03561—Venting means working at specific times
Abstract
Description
Die Erfindung bezieht sich auf Verfahren zur Kraftstofftank-Entlüftung nach Anspruch 1 sowie auf eine Vorrichtung zur Durchführung des Verfahrens nach Patentanspruch 3.The invention relates to methods for fuel tank venting according to claim 1 and to an apparatus for carrying out the method according to
Gattungsgemäße Verfahren und/oder Vorrichtungen sind aus dem Stand der Technik bekannt.Generic methods and / or devices are known from the prior art.
Die
Die
Die
Gattungsgemäße Vorrichtungen umfassen zumeist ein Tanksystem mit einer Brennkraftmaschine, umfassend einen Kraftstofftank zur Befüllung mit Kraftstoff. Dem Kraftstofftank ist dabei ein Filterelement zugeordnet, um die Kraftstoffdämpfe aufzunehmen, die beim Ausdampfen des Kraftstoffs – auch im Stillstand des Kraftfahrzeuges – auftreten. Jedoch kann das Filterelement nur eine bestimmte Menge an Kraftstoffdämpfen aufnehmen. Um zu verhindern, dass das Filterelement „durchbricht” und so Kraftstoffdämpfe in die Umgebung gelangen, muss das Filterelement regelmäßig „gespült” werden. Dazu werden die im Filterelement aufgenommenen Kraftstoffdämpfe von der laufenden Brennkraftmaschine angesaugt und verbrannt. Dies ist jedoch nicht möglich, wenn das Kraftfahrzeug längere Zeit abgestellt ist, die Brennkraftmaschine also stillsteht.Generic devices usually comprise a tank system with an internal combustion engine, comprising a fuel tank for filling with fuel. The fuel tank is assigned a filter element in order to absorb the fuel vapors which occur during the evaporation of the fuel - even when the motor vehicle is at a standstill. However, the filter element can only absorb a certain amount of fuel vapors. In order to prevent the filter element "breaks through" and so fuel vapors escape into the environment, the filter element must be "flushed" regularly. For this purpose, the fuel vapors contained in the filter element are sucked by the running internal combustion engine and burned. However, this is not possible if the motor vehicle is parked for a long time, so the engine is stationary.
Die Aufgabe der Erfindung besteht darin, ein hinsichtlich des Standes der Technik verbessertes Verfahren sowie eine Vorrichtung zur Kraftstofftank-Entlüftung bereitzustellen, welche(s) eine zuverlässige Reduzierung und/oder Beseitigung aufgenommener Kraftstoffdämpfe ermöglicht.The object of the invention is to provide a prior art improved method and apparatus for fuel tank venting which enables reliable reduction and / or elimination of ingested fuel vapors.
Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 sowie mit einer Vorrichtung mit den Merkmalen des Patentanspruchs 3 gelöst.This object is achieved by a method with the features of claim 1 and with a device having the features of
Weitere vorteilhafte Merkmale beinhalten die Unteransprüche.Further advantageous features include the subclaims.
Erfindungsgemäß wird ein Verfahren zur Kraftstofftank-Entlüftung, insbesondere in einem durch eine Brennkraftmaschine angetriebenen Kraftfahrzeug, über ein gasförmige Kraftstoffbestandteile speicherndes Absorptionselement, wobei während längerer Stillstandszeiten zweitweise die gespeicherten Kraftstoffbestandteile mit Hilfe eines zusätzlichen Servoaggregates abgesaugt und verbrannt werden und die dabei gewonnene Energie zur Absaugung und Verbrennung der jeweils gespeicherten Kraftstoffbestandteile und/oder zur Nachladung der Fahrzeugbatterie benutzt wird, vorgeschlagen. Vorgesehen ist, dass bei längeren Stillstandszeiten des Kraftfahrzeuges das zusätzliche Servoaggregat gestartet werden kann, um die im Absorptionselement aufgenommenen Kraftstoffdämpfe anzusaugen und zu verbrennen. Das Absorptionselement kann somit während längerer Stillstandszeiten durch Starten des zusätzlichen Servoaggregats gereinigt bzw. gespült werden.According to the invention, a method for fuel tank venting, in particular in a driven by an internal combustion engine motor vehicle, via a gaseous fuel constituents storing absorption element, wherein during prolonged downtime, the stored fuel components are secondarily sucked with the aid of an additional servo unit and burned and the energy thereby obtained for suction and Combustion of the respectively stored fuel components and / or used for recharging the vehicle battery is proposed. It is envisaged that during longer downtimes of the motor vehicle, the additional servo unit can be started to absorb the fuel vapors contained in the absorption element and burn. The absorption element can thus be cleaned or rinsed during prolonged downtime by starting the additional servo unit.
Beispielsweise kann vorgesehen sein, dass bei längeren Stillstandszeiten eine Absaugung und Verbrennung der gespeicherten Kraftstoffbestandteile nur in gewissen Zeitabständen als Teil der Gesamt-Stillstandzeit im Sinne eines Mindestladezustandes der Fahrzeugbatterie und/oder einer Vermeidung eines „Durchbruchs” des Absorptionselements erfolgt.For example, it may be provided that for longer downtime extraction and combustion of the stored fuel components takes place only at certain intervals as part of the total downtime in terms of a minimum state of charge of the vehicle battery and / or avoiding a "breakthrough" of the absorption element.
Die Erfindung betrifft ferner eine Vorrichtung zur Durchführung der beschriebenen Verfahrensschritte, welche eine zusätzliche, die von dem Absorptionselement gespeicherten Kraftstoffbestandteile absaugenden und verbrennenden, Klein-Brennkraftmaschine vorsieht. Die Klein-Brennkraftmaschine fungiert hierbei als zusätzliches Servoaggregat, mit dessen Hilfe die im Absorptionselement gespeicherten Kraftstoffbestandteile abgesaugt und verbrannt werden können. Der Begriff Klein-Brennkraftmaschine bedeutet hierbei, dass es sich betreffend der Leistung und/oder Dimensionierung der Klein-Brennkraftmaschine, um eine im Vergleich zur Antriebs-Brennkraftmaschine wesentlich kleiner dimensionierte Brennkraftmaschine handelt.The invention further relates to a device for carrying out the described method steps, which provides an additional, the internal combustion engine stored by the absorption element stored fuel components and burning, small. The small internal combustion engine acts as an additional servo unit, with the help of which the fuel components stored in the absorption element are sucked off and can be burned. The term "small internal combustion engine" means in this case that, with regard to the power and / or dimensioning of the small internal combustion engine, it is a considerably smaller internal combustion engine compared to the internal combustion engine.
Eine Ausführungsform der Erfindung sieht einen mit der Klein-Brennkraftmaschine in Antriebsverbindung bringbaren Generator vor. Über den an die zusätzliche Klein-Brennkraftmaschine mechanisch gekoppelten Generator kann dann, bei Betrieb der Klein-Brennkraftmaschine, Strom erzeugt werden, um die Fahrzeugbatterie aufzuladen, welche sich im Stillstand des Kraftfahrzeuges langsam entlädt. Denn auch bei Nichtbenutzung entlädt sich die Batterie ständig in geringem Maß selbst. Ist sie in ein Fahrzeug eingebaut, steht fast die gesamte Elektroanlage des Fahrzeuges unter Spannung, wobei es immer kleinere Verbraucher (Uhr, Alarmanlage) oder Kriechströme geben kann, die zusätzlich zur Entladung führen. Insbesondere kann der Generator ausgelegt sein, um eine Ladespannung zwischen 12 Volt und 14 Volt für die Fahrzeugbatterie zu generieren. Der Generator befindet sich bevorzugt, jedoch keinesfalls zwingend, in räumlicher Nähe zur Klein-Brennkraftmaschine und/oder Fahrzeugbatterie, um einen einfacheren Anschluss an die entsprechenden Bauteile zu gewährleisten.An embodiment of the invention provides a generator which can be brought into driving connection with the small internal combustion engine. When the small internal combustion engine is operating, power can be generated via the generator mechanically coupled to the additional small internal combustion engine in order to charge the vehicle battery, which discharges slowly when the motor vehicle is at a standstill. Even when not in use, the battery is constantly discharging itself to a small extent. If it is installed in a vehicle, almost the entire electrical system of the vehicle is under voltage, and there may be smaller and smaller consumers (clock, alarm) or creepage currents, in addition to the discharge to lead. In particular, the generator may be configured to generate a charging voltage between 12 volts and 14 volts for the vehicle battery. The generator is preferably, but by no means compulsorily, in close proximity to the small internal combustion engine and / or vehicle battery in order to ensure a simpler connection to the corresponding components.
Eine weitere Ausführungsform der Erfindung sieht eine Ansaugverbindung zwischen der Klein-Brennkraftmaschine und dem Absorptionselement vor. Mittels der Ansaugverbindung kann das Absorptionselement von den gespeicherten Kraftstoffdämpfen gereinigt bzw. gespült werden, um einen „Durchbruch” des befrachteten Absorptionselements zu verhindern.Another embodiment of the invention provides a suction connection between the small internal combustion engine and the absorption element. By means of the suction connection, the absorption element can be cleaned or rinsed from the stored fuel vapors in order to prevent a "breakthrough" of the loaded absorption element.
Beispielsweise kann als Absorptionselement ein Aktivkohlefilter zum Einsatz kommen. Als Aktivkohlefilter werden Filter bezeichnet, die Aktivkohle enthalten. Zweck ist das Filtern von unerwünschten Stoffen wie Staub, Schwermetallen oder giftigen Chemikalien aus Flüssigkeiten oder Gasen.For example, an activated carbon filter can be used as the absorption element. Activated carbon filters are filters that contain activated carbon. The purpose is to filter unwanted substances such as dust, heavy metals or toxic chemicals from liquids or gases.
Das vorgeschlagene Verfahren bzw. die vorgeschlagene Vorrichtung sorgt somit zum einen dafür, dass das Absorptionselement nicht durchbricht, und zum anderen dafür, dass die Fahrzeugbatterie stets ausreichend geladen ist.The proposed method or the proposed device thus ensures on the one hand that the absorption element does not break through, and on the other hand ensures that the vehicle battery is always sufficiently charged.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die einzige Zeichnung ein Ausführungsbeispiel der Erfindung beschrieben ist. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein.Further advantages, features and details of the invention will become apparent from the following description in which with reference to the single drawing an embodiment of the invention is described. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination.
Die Erfindung wird nachfolgend mit Bezug auf die einzige Figur näher erläutert.The invention will be explained in more detail with reference to the single figure.
Es zeigt:It shows:
Fig. eine schematisch dargestellte Vorrichtung zur Kraftstofftank-Entlüftung.Fig. A schematically illustrated device for fuel tank venting.
Die einzige Figur zeigt eine Vorrichtung V zur Kraftstofftank-Entlüftung.The single figure shows a device V for fuel tank venting.
Die Vorrichtung V umfasst eine Brennkraftmaschine
Der Generator
Die Klein-Brennkraftmaschine
Das Absorptionselement
Diese Funktion übernimmt die mit dem Absorptionselement
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 10248193 A1 [0003] DE 10248193 A1 [0003]
- DE 102004013232 A1 [0004] DE 102004013232 A1 [0004]
- DE 102008052759 A1 [0005] DE 102008052759 A1 [0005]
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010061048 DE102010061048A1 (en) | 2010-12-06 | 2010-12-06 | Method for ventilating fuel tank of tank system in combustion engine of motor car, involves utilizing energy generated by exhausting and burning of fuel storing components for charging vehicle battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010061048 DE102010061048A1 (en) | 2010-12-06 | 2010-12-06 | Method for ventilating fuel tank of tank system in combustion engine of motor car, involves utilizing energy generated by exhausting and burning of fuel storing components for charging vehicle battery |
Publications (1)
Publication Number | Publication Date |
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DE102010061048A1 true DE102010061048A1 (en) | 2012-06-06 |
Family
ID=46082925
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Application Number | Title | Priority Date | Filing Date |
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DE201010061048 Withdrawn DE102010061048A1 (en) | 2010-12-06 | 2010-12-06 | Method for ventilating fuel tank of tank system in combustion engine of motor car, involves utilizing energy generated by exhausting and burning of fuel storing components for charging vehicle battery |
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DE (1) | DE102010061048A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3043277A1 (en) * | 2015-10-29 | 2017-05-05 | Valeo Systemes De Controle Moteur | SYSTEM FOR GENERATING ELECTRIC ENERGY FOR A MOTOR VEHICLE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248193A1 (en) | 2002-10-16 | 2004-04-29 | Robert Bosch Gmbh | Removal of unburned fuel from vehicle engine following turning-off to reduce emissions, continues engine rotation using electric motor to remove it |
DE102004013232A1 (en) | 2004-03-18 | 2005-10-20 | Daimler Chrysler Ag | Method and device for operating an internal combustion engine with turbocharging |
DE102008052759A1 (en) | 2008-10-22 | 2010-04-29 | Bayerische Motoren Werke Aktiengesellschaft | Operating method for tank ventilation system of motor vehicle driven by internal-combustion engine, involves guiding tank ventilation line by adsorption storage element, where tank ventilation line outgoes fuel tank storing fuel |
-
2010
- 2010-12-06 DE DE201010061048 patent/DE102010061048A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10248193A1 (en) | 2002-10-16 | 2004-04-29 | Robert Bosch Gmbh | Removal of unburned fuel from vehicle engine following turning-off to reduce emissions, continues engine rotation using electric motor to remove it |
DE102004013232A1 (en) | 2004-03-18 | 2005-10-20 | Daimler Chrysler Ag | Method and device for operating an internal combustion engine with turbocharging |
DE102008052759A1 (en) | 2008-10-22 | 2010-04-29 | Bayerische Motoren Werke Aktiengesellschaft | Operating method for tank ventilation system of motor vehicle driven by internal-combustion engine, involves guiding tank ventilation line by adsorption storage element, where tank ventilation line outgoes fuel tank storing fuel |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3043277A1 (en) * | 2015-10-29 | 2017-05-05 | Valeo Systemes De Controle Moteur | SYSTEM FOR GENERATING ELECTRIC ENERGY FOR A MOTOR VEHICLE |
EP3165391A1 (en) * | 2015-10-29 | 2017-05-10 | Valeo Systemes de Controle Moteur | System for generating electric power for a motor vehicle |
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