WO2011067180A1 - Procédé pour faire fonctionner un système de carburant et dispositif pour modifier une pression dans un système de carburant - Google Patents

Procédé pour faire fonctionner un système de carburant et dispositif pour modifier une pression dans un système de carburant Download PDF

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Publication number
WO2011067180A1
WO2011067180A1 PCT/EP2010/068292 EP2010068292W WO2011067180A1 WO 2011067180 A1 WO2011067180 A1 WO 2011067180A1 EP 2010068292 W EP2010068292 W EP 2010068292W WO 2011067180 A1 WO2011067180 A1 WO 2011067180A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
pressure
fuel system
fuel tank
tank
Prior art date
Application number
PCT/EP2010/068292
Other languages
German (de)
English (en)
Inventor
Anton Angermaier
Thomas Beiderbeck
Original Assignee
Avl Software And Functions Gmbh
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 Avl Software And Functions Gmbh filed Critical Avl Software And Functions Gmbh
Priority to EP10779832.4A priority Critical patent/EP2507499B1/fr
Publication of WO2011067180A1 publication Critical patent/WO2011067180A1/fr

Links

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
    • 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
    • F02M25/0809—Judging failure of purge control system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/003—Adding fuel vapours, e.g. drawn from engine fuel reservoir
    • F02D41/0032—Controlling the purging of the canister as a function of the engine operating conditions
    • F02D41/0035—Controlling the purging of the canister as a function of the engine operating conditions to achieve a special effect, e.g. to warm up the catalyst
    • F02D41/0037—Controlling the purging of the canister as a function of the engine operating conditions to achieve a special effect, e.g. to warm up the catalyst for diagnosing the engine
    • 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
    • F02M2025/0845—Electromagnetic valves
    • 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
    • F02M37/0082—Devices inside the fuel tank other than fuel pumps or filters

Definitions

  • the invention relates to a method for operating a fuel system of a vehicle with electric drive, in which a pressure within a fuel tank of the fuel system can change situation-related.
  • the invention relates to an apparatus for varying a pressure in a fuel system comprising substantially a fuel tank for storing fuel on an electric vehicle, a fuel filling device for filling fuel in the fuel tank, and a filter device for filtering fuel gases.
  • Tank leak diagnosis in a tank ventilation device essentially consisting of a fuel tank, a storage tank for fuel vapors and an opening into an intake manifold of an internal combustion engine of a vehicle tank vent valve, the memory having a vent line with a shut-off immediately after stopping the engine, a negative pressure in the tank ventilation device Closing the shut-off valve and opening the tank venting valve to generate in order then to detect a vacuum reduction with the tank vent valve closed at predetermined times, whereby a tank leak diagnosis can be performed in the tank venting device. It is an object of the invention to further develop methods for operating a fuel system of a vehicle.
  • the object of the invention is achieved by a method for operating a fuel system of a vehicle with electric drive, in which a pressure within a
  • Fuel tank of the fuel system can change situation, the process is characterized in that the pressure is observed within the fuel tank and changed as needed depending on a model-related and / or pre-calculated reference pressure.
  • a closure valve which is preferably arranged in front of a filter device for fuel gases, is opened and the pressure within the fuel tank is changed via the filter device.
  • the fuel gases in particular hydrocarbon gases, can be filtered by means of the filter device and thus advantageously do not enter the environment but remain in the fuel system.
  • An advantageous variant of the method provides in this context that upon reaching a model-related and / or pre-calculated reference pressure, a tank opening of the fuel system is released for opening, whereby a pressure measurement within the fuel system can be dispensed with.
  • the closure valve is opened and the pressure within a fuel tank is changed.
  • a pressure can be calculated model that takes into account pressure changes within the fuel tank due to, for example, the number of gas discharges and their amount or outgassing at the last refueling.
  • the measured pressure and the modeled pressure can be compared and it can be determined whether or not there is a leak.
  • an overpressure or underpressure can be generated in the fuel tank in order subsequently to be able to carry out an active pressure test. If no critical pressure change takes place within a certain time interval, a leakage within the fuel system can be excluded.
  • the fuel system in particular a filter device of the fuel system, is cleaned of fuel gases, in particular of hydrocarbons.
  • the filter device of the fuel system is purged and cleaned with ambient air and the pressure within a fuel tank is changed.
  • an activated carbon filter insert can be regenerated particularly well.
  • the state of fullness of the activated carbon filter cartridge may be calculated cumulatively or alternatively based on the number of gas discharges and the associated hydrocarbon content modeled.
  • the features with regard to the third operating state are also advantageous without the other features of the invention, since these features advantageously continue known methods for operating a fuel system.
  • the pressure within the fuel system in particular within a fuel tank, can be changed in different ways. Often it is already sufficient to open a corresponding valve to effect a pressure change, in particular a pressure reduction. Cumulatively or alternatively, it is advantageous if the change in pressure within the fuel system is carried out by means of commissioning a range extender. In this case, for example, parts of the fuel vapors formed can be burned with the range extender in almost any desired manner. In this respect, the pressure within the fuel system can advantageously be adjusted system-internally by means of the range extender without the need for an immediate pressure equalization with the environment.
  • a situation-related pressure can also be set by means of the range extender as a function of a model-related and / or predicted reference pressure.
  • the term "situation-related pressure” describes the possibility of being able to change the pressure within the fuel system with regard to certain operating situations in a required manner, whereby this situational pressure can be adjusted as a function of a model-related and / or predicted reference pressure
  • range extender preferably describes an internal combustion engine specially tuned to a vehicle with an electric drive, which does not serve as the primary drive for the present vehicle ,
  • a generator for generating electrical energy is operated by means of the range extender, in order to either supply a storage device for electrical energy or to supply the electric drive of the present vehicle directly with electrical energy.
  • the present fuel system may be provided with any suitable components, such as the fuel tank, a fuel filler, filter devices, shut-off valves, and the like. It is understood that the individual components of the present fuel system are fluidly connected to one another by means of a suitable conduit system.
  • the fuel system is designed here in terms of pressure as a closed system.
  • the object of the invention is also a device for varying a pressure in a fuel system, in particular for carrying out the present method according to one of the explained features, comprising essentially a fuel tank for storing fuel on a vehicle with electric drive, a fuels inf ü 11th a device for filling fuel into the fuel tank and a filter device for filtering fuel gases, the device comprising a device for controlling and / or regulating the present method according to one of the explained features.
  • the present device can be made particularly compact and lightweight, so that it can be advantageously used on a large number of electric-powered vehicles.
  • the device also comprises a device for comparing a current pressure with a model-related and / or pre-calculated reference pressure, wherein this comparison device may be part of the device for controlling and / or regulating.
  • the apparatus further includes a pressure sensor for detecting a current pressure within the fuel system so that the current pressure within the fuel tank system is always known.
  • the device for controlling and / or regulating comprises a vehicle control unit (VCU), a hybrid control unit (HCU) and / or a range extender control unit (RECU).
  • VCU vehicle control unit
  • HCU hybrid control unit
  • RECU range extender control unit
  • the present device comprises a range extender
  • an overpressure within the fuel system can be reduced and a tank opening of the fuel system can be released for opening upon reaching a model-related and / or predicted reference pressure.
  • the range extender is put into operation shortly before refueling in order to advantageously reduce excess pressure within the fuel system. so that a fuel cap can then be opened.
  • the overpressure is reduced to ambient pressure or slightly above it. This process can be used if, for example, the closure valve can not be opened due to a malfunction.
  • the object of the invention is also achieved by using a range extender of an electric vehicle to reduce overpressure in a fuel system of the electric vehicle.
  • a release of the tank opening or a relevant fuel filler flap can thus be made structurally particularly simple by means of a differential pressure measurement, in particular by means of a single pressure sensor.
  • a further variant of the method provides that a vacuum is generated within the fuel system with the aid of the range extender and a leakage diagnosis with respect to the fuel system can be carried out as a function of a model-related and / or predicted reference pressure. If a corresponding negative pressure within the fuel system is generated by means of the range extender, a leakage diagnosis can be carried out in a manner known per se by measuring the pressure conditions within the fuel system over a suitable period of time. Preferably, the pressures measured in this case are compared with model-related and / or precalculated reference pressures in order to be able to advantageously obtain indications of a leakage within the fuel system. It is understood that one or more pressure sensors may be provided at almost any location within the fuel system.
  • Such a pressure sensor is preferably associated with the fuel tank in order to be able to carry out a particularly accurate leak diagnosis in the region of the fuel tank.
  • the object of the invention is also achieved by use of a range extender of an electric vehicle for generating a negative pressure in a fuel system of the vehicle with electric drive.
  • the fuel system in particular a filter device of the fuel system, of fuel gases, in particular of hydrocarbons, can be cleaned.
  • the range extender may remain inoperative for a longer period of time, whereby fuel vapors arising in the fuel system can not be dissipated by combustion in the internal combustion engine, as is usual in an internal combustion engine-driven motor vehicle.
  • the fuel vapors may leak into the environment due to a pressure increase when the range extender is not used for a long period of electric driving.
  • the object of the invention is also achieved by using a range extender of a vehicle with electric drive for cleaning in particular a fuel filter device of a fuel system of the vehicle with electric drive.
  • a fuel gas line closure valve is arranged in a fuel gas line upstream of the filter device, in particular between the filter device and the fuel tank.
  • a fuel supply closing valve is arranged in a fuel supply line in front of the range extender, in particular between the range extender and the fuel tank.
  • FIG. 1 schematically shows a device arrangement for carrying out the method sequences from FIGS. 2 and 3;
  • FIG. 2 schematically shows a first flow chart for an exemplary procedure of a
  • FIG. 3 schematically shows another flow chart for an exemplary method sequence of activating a fuel cap of a fuel refilling port with respect to a fuel system of an electric drive vehicle with a range extender.
  • the device 1 shown in FIG. 1 for setting a pressure 2 in a fuel system 3 comprises a range extender 4 with an engine control unit 5 (ECU) in the form of an internal combustion engine 6 with a generator 7 for generating electrical energy for a prime mover of one here not shown electric drive of a vehicle also not shown here.
  • ECU engine control unit 5
  • the device 1 comprises a fuel tank 8 for storing fuel 9, a fuel filling device 10 with a mechanically and / or electrically lockable tank lid 11, a filter device 12 for filtering fuel gases 13 with an activated carbon filter insert 14.
  • the range extender 4 is fluidly connected to the fuel tank 8 on the one hand via a fuel supply line 15 and on the other hand via a fuel gas supply line 16.
  • a fuel supply closing valve 17 In the fuel gas supply line 16 is located on the range extender 4, a fuel supply closing valve 17, by means of which the range extender 4 if required by Kraftstoffgaszu- line 16 can be fluidly separated. This is particularly advantageous if, in particular, the methods or method variants described above are to be carried out without intervention of the range extender 4.
  • the fuel gas supply line 16 is flanged to a fuel gas discharge line 18, which leads from the fuel tank 8 to the filter device 12.
  • a fuel gas line closure valve 19 is advantageously arranged so that the filter device 12 can be fluidically separated from the fuel gas discharge line 18. This is particularly advantageous if, for example, in the fuel tank 8, possibly adjusted by means of the range extender 4, a certain pressure and pressure equalization with the atmosphere via the filter device 12 should be avoided.
  • Pressure sensor 21 is provided, by means of the pressure sensor 21 generally a pressure 2 measured within the fuel system 3 and can be indicated for example at an evaluation device 22.
  • the device 1 has a device 23 for controlling and / or regulating, by means of which additionally the currently measured pressure 2 can be compared with a model-related and / or pre-calculated reference pressure, by means of which in particular the operation of the range extender 4 are coordinated can. But also a control of the valves 17 and 19 and the control of the tank lid 1 1 can be taken over by the device 23.
  • the device 23 is connected via corresponding data lines 24 (here explicitly numbered between the engine control unit 5 and the device 23) to the individual components.
  • the device 23 can be realized, for example, by means of a vehicle control unit (VCU), a range extender control unit (RECU) and / or a hybrid control unit (HCU), as indicated in this exemplary embodiment.
  • VCU vehicle control unit
  • RECU range extender control unit
  • HCU hybrid control unit
  • the first flowchart 30 shown by way of example in FIG. 2 starts with a tank diagnostic request 31, as a result of which a service query 32 regarding the range
  • Extenders 4 is made. If the operating query 32 is affirmative, ie, the operation of the range extender 4 is confirmed, a negative pressure is generated in a following step 33 and tested according to a comparison query 34, if the current pressure 2 coincides with a model-related and / or pre-calculated reference pressure. In another test query 35 is checked whether there is a critical pressure deviation in this regard. If such a critical pressure deviation is determined, a
  • an emergency diagnosis 39 is carried out, in particular for compliance with specific regulations in an alternative subsequent step. If the urgency diagnosis 39 remains negative, in a next step 40, the system waits until the pressure 2 within the fuel system 3 rises. Subsequently, the operation query 32 again.
  • the range extender 4 is started in an alternative step 41. Subsequently, the operation query 32 again.
  • the further flow chart 50 explained in FIG. 3 starts with a tank activity 51, in consequence of which an overpressure diagnosis 52 with regard to the fuel tank 8 is made. If there is no overpressure 2, an evaporation valve 19 is then activated in a next method step 53, and in a subsequent step 54, a tank lid closure of the tank lid 11 is released. During the actual refueling process, in a further step 55, fuel gases 13 are filtered through the filter device 12 and released into the atmosphere.
  • an evaporation valve 19 is subsequently also activated in the next method step 53, and in a subsequent step 57 the fuel gases 13 are filtered through the filter device 12 and released into the atmosphere. Subsequently, the previously described steps 54, 55 and 56 can be initiated or made.
  • saturation of the activated carbon filter insert 14 in dependence on a current tank pressure 2, a current fill level of the fuel tank 8, a current temperature, etc. is determined in a parallel step 58.
  • a notification request 60 regarding a range extender operation and an activated charcoal filter cleaner is sent to the engine control unit 5 at a next vehicle use.
  • an alternative notification request 61 regarding activated charcoal filter cleaning is sent to the engine control unit 5 during a next range extender operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

Afin de perfectionner des procédés connus de fonctionnement de système de carburant d'un véhicule, l'invention propose un procédé pour le fonctionnement d'un système de carburant d'un véhicule avec entraînement électronique, avec lequel une pression à l'intérieur d'un réservoir de carburant du système de carburant peut être modifiée de façon spécifique à la situation, le procédé se caractérisant par le fait que la pression à l'intérieur du réservoir de carburant est observée et modifiée éventuellement en fonction d'une pression de référence spécifique au modèle et/ou calculée à l'avance.
PCT/EP2010/068292 2009-12-05 2010-11-26 Procédé pour faire fonctionner un système de carburant et dispositif pour modifier une pression dans un système de carburant WO2011067180A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10779832.4A EP2507499B1 (fr) 2009-12-05 2010-11-26 Procédé pour faire fonctionner un système de carburant et dispositif pour modifier une pression dans un système de carburant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009057227.9A DE102009057227B4 (de) 2009-12-05 2009-12-05 Verfahren zum Betreiben eines Kraftstoffsystems
DE102009057227.9 2009-12-05

Publications (1)

Publication Number Publication Date
WO2011067180A1 true WO2011067180A1 (fr) 2011-06-09

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ID=43629678

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/068292 WO2011067180A1 (fr) 2009-12-05 2010-11-26 Procédé pour faire fonctionner un système de carburant et dispositif pour modifier une pression dans un système de carburant

Country Status (3)

Country Link
EP (1) EP2507499B1 (fr)
DE (1) DE102009057227B4 (fr)
WO (1) WO2011067180A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159890A1 (fr) * 2012-04-28 2013-10-31 Audi Ag Procédé pour détecter une fuite dans un dispositif de dégazage de réservoir d'un véhicule à moteur et véhicule à moteur associé
CN107791853A (zh) * 2017-10-27 2018-03-13 北京昊天昊城市环境管理集团有限公司 用于续航的供电方法
US11815051B2 (en) * 2019-02-13 2023-11-14 Bayerische Motoren Werke Aktiengesellschaft Method for actuating a dosing valve, tank ventilation system, and motor vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011106008B4 (de) 2011-06-30 2018-10-31 Audi Ag Verfahren zum Betreiben eines Kraftstoffsystems sowie Kraftstoffsystem
DE102011106006B4 (de) 2011-06-30 2019-05-16 Audi Ag Verfahren zum Betreiben eines Kraftstoffsystems sowie Kraftstoffsystem
DE102020103619A1 (de) 2020-02-12 2021-08-12 Volkswagen Aktiengesellschaft Kraftstofftanksystem, Kraftfahrzeug und Verfahren zum Betreiben eines Kraftstofftanksystems

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US20030079533A1 (en) * 1997-09-05 2003-05-01 Siemens Canada Limited Initialization method for an automotive evaporative emission leak detection system
US20050234631A1 (en) * 2004-04-19 2005-10-20 Denso Corporation Electronic control unit for vehicles
US20070267232A1 (en) * 2006-05-22 2007-11-22 Fuji Jukogyo Kabushiki Kaisha Diagnostic control device for a hybrid vehicle
DE102006034076A1 (de) 2006-07-24 2008-01-31 Robert Bosch Gmbh Verfahren zur Tankleckdiagnose in einer Tankentlüftungsvorrichtung
US20080271718A1 (en) * 2007-05-03 2008-11-06 Ford Global Technologies, Llc Method for Fuel Vapor Canister Purging
US7448367B1 (en) * 2007-07-13 2008-11-11 Gm Global Technology Operations, Inc. Evaporative emission control in battery powered vehicle with gasoline engine powered generator

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DE19913440A1 (de) * 1999-03-25 2000-10-05 Bayerische Motoren Werke Ag Tankentlüftungssystem bei einem Kraftstofftank für Brennkraftmaschinen in Kraftfahrzeugen
DE10138379B4 (de) * 2000-08-12 2004-02-05 Ford Global Technologies, LLC (n.d.Ges.d. Staates Delaware), Dearborn Verfahren und Vorrichtung zur Zustandsdiagnose eines Kraftstofftanks
US6557534B2 (en) * 2001-01-03 2003-05-06 Ford Global Technologies, Inc. Canister purge strategy for a hybrid electric vehicle
JP4238835B2 (ja) * 2005-03-18 2009-03-18 トヨタ自動車株式会社 自動車及びその制御方法
DE102007002188B4 (de) * 2007-01-16 2012-12-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Hybrid-Fahrzeug
DE102007031347A1 (de) * 2007-07-05 2009-01-15 Bayerische Motoren Werke Aktiengesellschaft Betriebsverfahren für ein wahlweise von einer Brennkraftmaschine und/oder von einem weiteren Motor antreibbares Kraftfahrzeug
DE102007039830A1 (de) * 2007-08-23 2009-02-26 Robert Bosch Gmbh Ventilkontrolle bei Betankung von Drucktanks

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Publication number Priority date Publication date Assignee Title
US20030079533A1 (en) * 1997-09-05 2003-05-01 Siemens Canada Limited Initialization method for an automotive evaporative emission leak detection system
US20050234631A1 (en) * 2004-04-19 2005-10-20 Denso Corporation Electronic control unit for vehicles
US20070267232A1 (en) * 2006-05-22 2007-11-22 Fuji Jukogyo Kabushiki Kaisha Diagnostic control device for a hybrid vehicle
DE102006034076A1 (de) 2006-07-24 2008-01-31 Robert Bosch Gmbh Verfahren zur Tankleckdiagnose in einer Tankentlüftungsvorrichtung
US20080271718A1 (en) * 2007-05-03 2008-11-06 Ford Global Technologies, Llc Method for Fuel Vapor Canister Purging
US7448367B1 (en) * 2007-07-13 2008-11-11 Gm Global Technology Operations, Inc. Evaporative emission control in battery powered vehicle with gasoline engine powered generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159890A1 (fr) * 2012-04-28 2013-10-31 Audi Ag Procédé pour détecter une fuite dans un dispositif de dégazage de réservoir d'un véhicule à moteur et véhicule à moteur associé
CN107791853A (zh) * 2017-10-27 2018-03-13 北京昊天昊城市环境管理集团有限公司 用于续航的供电方法
US11815051B2 (en) * 2019-02-13 2023-11-14 Bayerische Motoren Werke Aktiengesellschaft Method for actuating a dosing valve, tank ventilation system, and motor vehicle

Also Published As

Publication number Publication date
EP2507499A1 (fr) 2012-10-10
DE102009057227A1 (de) 2011-06-09
DE102009057227B4 (de) 2016-09-01
EP2507499B1 (fr) 2017-12-20

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