EP1568653A2 - Système de contrôle de ventilation pour citernes de carburants - Google Patents

Système de contrôle de ventilation pour citernes de carburants Download PDF

Info

Publication number
EP1568653A2
EP1568653A2 EP05003703A EP05003703A EP1568653A2 EP 1568653 A2 EP1568653 A2 EP 1568653A2 EP 05003703 A EP05003703 A EP 05003703A EP 05003703 A EP05003703 A EP 05003703A EP 1568653 A2 EP1568653 A2 EP 1568653A2
Authority
EP
European Patent Office
Prior art keywords
measuring
measuring device
storage tank
flow
gas
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Withdrawn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
EP05003703A
Other languages
German (de)
English (en)
Other versions
EP1568653A3 (fr
Inventor
Stefan Kunter
Wolfgang Dr. Schrittenlacher
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.)
Fafnir GmbH
Original Assignee
Fafnir 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 Fafnir GmbH filed Critical Fafnir GmbH
Publication of EP1568653A2 publication Critical patent/EP1568653A2/fr
Publication of EP1568653A3 publication Critical patent/EP1568653A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
    • B67D7/3227—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid relating to venting of a container during loading or unloading
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
    • B67D7/0476—Vapour recovery systems
    • B67D7/0478—Vapour recovery systems constructional features or components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/78—Arrangements of storage tanks, reservoirs or pipe-lines

Definitions

  • the invention relates to a ventilation mast monitoring system for Gas stations.
  • Fuels are usually stored in storage tanks that lie in the ground. Such a storage tank is one with connected to the ground outstanding ventilation mast, above the ever according to the pressure conditions prevailing in the storage tank gas (in particular a fuel / air mixture) emerge from the storage tank or air can enter the storage tank.
  • the pressure in the storage tank may vary, e.g. if after filling the Storage tanks of fuel to the temperature of the soil cools.
  • the fuel delivery rate not with the gas delivery rate of the gas recirculation system matches, it comes to pressure fluctuations in the storage tank.
  • causes can be e.g. Error in the gas recirculation system or refueling operations on motor vehicles involving fuel vapor be held with on-board resources (ORVR).
  • Ventilation masts are often in their upper one End area provided with a throttle or a vapor recovery valve.
  • a throttle has a high flow resistance and reduces therefore the gas flow through the ventilation mast, while a vapor recovery valve as a pressure relief valve in both directions acts, so that gas can only flow through the ventilation mast, when an overpressure in the storage tank is a predetermined value exceeds or a negative pressure falls below a predetermined value.
  • a ventilation mast monitoring system can be used become.
  • Such a system is described in EP 0 985 634 B1.
  • the ventilation mast with a vapor recovery valve, a check valve, a flow meter and a Hydrocarbon sensor serving mass spectrometer provided.
  • the measured data are processed and allowed in a control in particular, to recognize an ORVR vehicle during refueling and adjust the gas recycle to it.
  • the flow meter of the previously known ventilation tower monitoring system is a conventional device in its measuring dynamics is limited and e.g. can no longer capture quantitatively if when filling the storage tank a large amount of gas through the Ventilation mast escapes because the vapor recovery hose accidentally was not connected, for returning the refueling out of the storage tank displaced gas serves in the tanker.
  • the ventilation tower monitoring system for gas stations contains a thermal flow measuring device that a heater and a lying in the flow path, on the temperature of the heater responsive temperature sensor having.
  • This flow measuring device is designed to the over the ventilation mast of a storage tank of a gas station emerging from the storage tank or in the storage tank to capture incoming gas flow.
  • a hydrocarbon measuring device the set up the direction of the over the ventilation mast emerging from the storage tank or entering the storage tank Gas volume flow to capture.
  • suitable thermal flow measuring device is known from DE 199 13 968 A1 known.
  • the measuring principle is based on the fact that the in the influence of the heater lying temperature sensor for a given heat output with a large gas volume flow (ie at higher flow) is better cooled than at low Gas volume flow and consequently a correspondingly lower Temperature displays.
  • the temperature difference between the temperature sensor and the ambient temperature kept constant and the power supplied to the heater is detected; at rising Gas volume flow must also increase the heating power to to keep the temperature difference at the preselected value.
  • the power supplied to the heater is thus a measure of the flow to be measured.
  • Such a thermal flow measuring device has a large measurement dynamics, i. she is capable of a gas flow to quantify, by several orders of magnitude can vary.
  • the flow measuring device a dynamic range of at least 2 l / min to 1200 l / min; the measurement dynamics can be even greater.
  • High gas volume flows in the order of 1000 l / min occur mainly then when, when filling the storage tank, the vapor recovery hose not connected, as explained above.
  • the flow measuring device preferably assigned to at least two measuring ranges. These measuring ranges can be set by specifying a fixed temperature difference between the temperature of the temperature sensor and the Ambient temperature be selectable, with each of the heater supplied power is a measure of the measured Flow is. It is used to measure small gas flow rates a higher temperature difference switched than to measure large Gas volume flows, so that the heater supplied Performance in the two measuring ranges generally not too much is different.
  • the flowmeter can be calibrated by measurements be calibrated.
  • Ventilation mast monitoring system includes the hydrocarbon meter a thermal conductivity measuring cell.
  • the Thermal conductivity measuring cell preferably has a measuring cell housing, a heater and a temperature of this Heating device responsive temperature sensor.
  • the measuring cell housing is provided with at least one opening to enter of gas from the gas flowing through the ventilation mast in the measuring cell housing is set up.
  • thermal conductivity measuring cell is also known from DE 199 13 968 A1.
  • this is Thermal conductivity measuring cell similar to the flow measuring device built up.
  • the temperature sensor is not in the Flow path of the gas flowing through the ventilation mast, but has only one opening to this flow path, so the gas can slowly enter the measuring cell housing, without while dissipating heat by convection.
  • the temperature sensor is therefore determined by the heat conduction of the gas in the measuring cell housing cooled. This allows the determination of the thermal conductivity of the gas above the temperature of the temperature sensor or the heating power, as in DE 199 13 968 A1 closer explained.
  • hydrocarbons and air Gas mixture can be measured from the measured thermal conductivity to conclude the concentration of hydrocarbons.
  • the preferred hydrocarbon measuring device of the invention Systems thus allows a quantitative determination of Hydrocarbon concentration in the through the ventilation mast flowing gas mixture.
  • those of the hydrocarbon measuring device allow one measurement output Statement about the direction of the flow in the ventilation mast: If the hydrocarbon concentration is high, ie above of a given threshold (threshold), the Gas come from the storage tank and flows accordingly into the environment. If, on the other hand, the hydrocarbon concentration is low, the gas must essentially be air which is sucked by a negative pressure in the storage tank. To the Direction of flow through the ventilation mast as fast as possible To recognize the hydrocarbon measuring device should be close installed at the top of the ventilation tower.
  • the thermal flow measuring device and the preferred Hydrocarbon measuring device of the system according to the invention have a simple basic structure, work accurately and are inexpensive.
  • the system further a pressure measuring device that is adapted to the To detect pressure in the storage tank. If the pressure known is the emission of hydrocarbons from the Storage tank with the aid of the measured values for the gas volume flow and calculate the hydrocarbon concentration (see below).
  • the Measurement of pressure fluctuations in the storage tank can also for the Analysis of refueling operations and control of gas recirculation be beneficial. Such smaller pressure fluctuations occur in particular, when a vapor recovery valve on the ventilation mast not yet responsive and therefore no gas through the ventilation mast flows.
  • the system may include a temperature measuring device, which is adapted to the temperature in the storage tank capture.
  • the temperature in the storage tank determined via the vapor pressure curve the vapor pressure of the fuel and Accordingly, the hydrocarbon concentration in the gas phase over ' the fuel level of the storage tank. If this hydrocarbon concentration is known, may be a suitable limit be specified for the hydrocarbon concentration, the needed to follow the direction of passing through the ventilation mast Gas volume flow to determine, as explained above.
  • the Vapor pressure curves of summer and winter fuel are different, which in an evaluation in a control device can be taken into account.
  • the inventive System a control device which is adapted to supplied by measuring devices of the system measuring signals receive and process.
  • This control device is preferably a separate component that contains a calculator and / or can be connected to a computer.
  • the control electronics of connected measuring devices e.g. the thermal flow measuring device
  • the control device be joined to form a unit. It is but also possible, the respective control electronics near the individual measuring devices or in these measuring devices to integrate.
  • control device Preferably run in the control device or the associated Calculator control, regulation and Ausireprogramme starting to the to operate individual measuring devices and the obtained thereof Evaluate measured data.
  • control device may be configured to receive one of the flow meter detected gas flow as in the storage tank entering to process, if that of the Hydrocarbon measuring device detected hydrocarbon concentration falls below a predetermined limit.
  • This Limit value is preferably determined by means of the temperature in the Storage tank set, as already explained above.
  • the control device can also be adapted to the Hydrocarbon measuring device to activate when the gas volume flow above a predetermined threshold. In this way, dynamic effects can be caused by an unwanted Avoid heating up.
  • emitted measurement signals are evaluated.
  • a build-up in the storage tank pressure recognize it early and it is statements about the behavior when filling the storage tank possible.
  • Another application is the detection of too low pressure in the storage tank due to frequent ORVR refueling where the gas recirculation is switched off.
  • the control device is adapted to from the level measuring device Evaluate or process emitted measurement signals, because they allow conclusions about the causes of Pressure changes. So the level drops with a removal of Fuel, and very slowly. In contrast, he rises at one Filling the storage tank relatively quickly, so it because of a certain delay of pressure equalization over the Gas swing hose of the tanker to a usually stronger Pressure rise in the storage tank comes.
  • the tank content measurement allows a distinction between this pressure increase and the Case that the gas recirculation has too high a flow rate and thereby builds up an additional pressure in the storage tank.
  • California regulations are the allowed Pressure limits in the storage tank differently, depending on whether normal tank operation is present or a filling of the storage tank he follows; also for this is the by a tank content measurement information gained useful.
  • the control device may further comprise the measurement signals of the flow measuring device, the hydrocarbon measuring device and
  • the pressure measuring device process the emission of hydrocarbons from the storage tank. Because from the product of the hydrocarbon concentration, the total pressure and the volume flow can be by means of the current Measured values the instantaneous emission of hydrocarbons per Calculate the time unit from the storage tank. By integration over time the total emission, e.g. the loss on hydrocarbons with unconnected vapor recovery hose during a filling process of the storage tank. Instead of The measured pressure can also be approximated by the atmospheric pressure be used, but the accuracy is reduced.
  • the control device is adapted to a Alarm signal, if at least one of measurement signals of the Flow measuring device, the hydrocarbon measuring device and optionally the pressure-measuring device of particular value lies outside predetermined error limits. Limits, about for permissible emissions, are usually provided by lawmakers specified.
  • the measuring signals can be in the control device or convert an associated computer and convert, if necessary using further quantities or parameters (e.g. Calibration parameters), so that a comparison with a respective Limit value is possible.
  • a storage tank 1 which is located in the soil 2 stores liquid fuel.
  • the fuel level is 3.
  • the storage tank 1 can therefore be subjected to pressure but it can also create a negative pressure in it.
  • One Pressure equalization takes place via a ventilation mast 4.
  • At petrol stations are usually several storage tanks via a connecting line connected together, and this connection line is on connected to the ventilation mast, so that a ventilation mast for sufficient number of storage tanks. For the sake of simplicity, is in Figure 1, however, only the one storage tank 1 with the ventilation mast 4 drawn.
  • the ventilation mast 4 is at its end with its vapor recovery valve 6 provided when exceeding a predetermined overpressure in the storage tank 1 responds, so that gas from the storage tank 1 can escape, but also enter the storage tank 1 air leaves as soon as a specified negative pressure falls below becomes.
  • the pressure in the storage tank 1 can therefore only within vary according to given limits.
  • the ventilation mast 4 also have a throttle or simply with an opening in his Be provided upper end region.
  • a motor vehicle is refueled via a pump 10, wherein a Dispensing valve 12 is inserted into the tank neck of the motor vehicle becomes.
  • the fuel from the storage tank 1 via a Line 14 transported by means of a fuel pump 16.
  • the funded amount of fluid determines a counter 18.
  • the fuel exits at 20 from the nozzle 12 and flows into the Tank of the motor vehicle.
  • the amount of gas delivered is determined by gas flow monitoring 28 monitors, so if necessary e.g. the drive motor 25 is driven can be to the capacity of the gas pump 24 at adjust the amount of liquid delivered per unit time.
  • the pressure in the storage tank 1 during operation The system is not constant, but may be subject to fluctuations.
  • the cause of such fluctuations may be e.g. Changes in the Temperature of the fuel in the storage tank 1, defects in the Gas recirculation or refueling of ORVR vehicles.
  • the gas shuttle valve 6 escapes gas (essentially Hydrocarbons or a hydrocarbon / air mixture) the storage tank 1 or it enters gas (essentially air) in the storage tank 1 a.
  • gas essentially Hydrocarbons or a hydrocarbon / air mixture
  • the ventilation mast 4 with a ventilation mast monitoring 30 provided.
  • the ventilation mast monitoring 30 is located near the upper end of the ventilation tower 4.
  • the ventilation tower monitoring 30 contains in a common housing a thermal flow measuring device, the emerging from the storage tank 1 or entering into the storage tank 1 incoming gas flow, and a hydrocarbon measuring device used in the Location is the hydrocarbon concentration in the by the Ventilation mast 4 to detect flowing gas mixture.
  • a control device which is not shown in FIG. 1, the ventilation tower monitoring 30 forms a ventilation tower monitoring system.
  • the thermal flow measuring device constructed as explained above and in the DE 199 13 968 A1.
  • the hydrocarbon measuring device has in the embodiment a thermal conductivity measuring cell, whose principle was also explained at the beginning.
  • DE 199 13 968 A1 contains also a description of this thermal conductivity measuring cell.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
EP05003703A 2004-02-27 2005-02-21 Système de contrôle de ventilation pour citernes de carburants Withdrawn EP1568653A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004009643 2004-02-27
DE102004009643A DE102004009643A1 (de) 2004-02-27 2004-02-27 Lüftungsmast-Überwachungssystem für Tankstellen

Publications (2)

Publication Number Publication Date
EP1568653A2 true EP1568653A2 (fr) 2005-08-31
EP1568653A3 EP1568653A3 (fr) 2008-05-14

Family

ID=34745302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05003703A Withdrawn EP1568653A3 (fr) 2004-02-27 2005-02-21 Système de contrôle de ventilation pour citernes de carburants

Country Status (4)

Country Link
US (1) US7258001B2 (fr)
EP (1) EP1568653A3 (fr)
CA (1) CA2495507A1 (fr)
DE (1) DE102004009643A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2116506A1 (fr) * 2008-05-07 2009-11-11 Dresser Wayne Aktiebolag Régulation de récupération de vapeur

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806314A1 (fr) * 2006-01-09 2007-07-11 Nestec S.A. Appareil et méthode pour soutirer une boisson avec entrée d'air côntrolée
TWI440830B (zh) * 2012-01-18 2014-06-11 Finetek Co Ltd Liquid level sensor
GB2533936B (en) 2015-01-07 2017-10-25 Homeserve Plc Flow detection device
GB201501935D0 (en) 2015-02-05 2015-03-25 Tooms Moore Consulting Ltd And Trow Consulting Ltd Water flow analysis
USD800591S1 (en) 2016-03-31 2017-10-24 Homeserve Plc Flowmeter
CN107585261B (zh) * 2017-06-30 2019-05-10 沪东中华造船(集团)有限公司 一种lng船透气桅顶部冰区防寒用蒸汽加热管路

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719806A1 (de) * 1996-05-13 1998-01-22 Dresser Ind Benzinzapf- und Dampfrückgewinnungsvorrichtung und -verfahren
EP0985634A1 (fr) * 1998-09-09 2000-03-15 Gilbarco Inc. Dispositif de surveillance des vapeurs d'essence dans une station service
FR2823191A1 (fr) * 2001-04-06 2002-10-11 Tokheim Services France Procede de controle de la teneur en hydrocarbures d'une vapeur circulant dans une installation equipee d'un systeme d'aspiration de vapeur

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5040577A (en) 1990-05-21 1991-08-20 Gilbarco Inc. Vapor recovery system for fuel dispenser
US5156199A (en) 1990-12-11 1992-10-20 Gilbarco, Inc. Control system for temperature compensated vapor recovery in gasoline dispenser
US5320077A (en) * 1992-03-05 1994-06-14 Nippondenso Co., Ltd. Fuel control system for internal combustion engine
US5450883A (en) 1994-02-07 1995-09-19 Gilbarco, Inc. System and method for testing for error conditions in a fuel vapor recovery system
US5782275A (en) 1996-05-17 1998-07-21 Gilbarco Inc. Onboard vapor recovery detection
US6026866A (en) 1997-08-11 2000-02-22 Gilbarco Inc. Onboard vapor recovery detection nozzle
NZ337450A (en) 1998-08-25 2001-01-26 Marconi Commerce Sys Inc Fuel delivery system with control system to determine whether vapour recovery is operating outside of acceptable limits
IT1310013B1 (it) 1999-03-05 2002-02-05 Logitron Srl Dispositivo di blocco per erogatori di carburante
US6240982B1 (en) * 1999-07-20 2001-06-05 Parker Hannifin Corporation Gasoline vapor recovery system
US6460579B2 (en) 1999-11-17 2002-10-08 Gilbarco Inc. Vapor flow and hydrocarbon concentration sensor for improved vapor recovery in fuel dispensers
US6386246B2 (en) 1999-11-17 2002-05-14 Marconi Commerce Systems Inc. Vapor flow and hydrocarbon concentration sensor for improved vapor recovery in fuel dispensers
US6276310B1 (en) * 2000-01-07 2001-08-21 Ford Global Technologies, Inc. Fuel additive dosing method and system for onboard vehicle use
US6336479B1 (en) 2000-02-07 2002-01-08 Marconi Commerce Systems Inc. Determining vapor recovery in a fueling system
US6325112B1 (en) 2000-02-11 2001-12-04 Marconi Commerce Systems Inc. Vapor recovery diagnostic system
US6357493B1 (en) 2000-10-23 2002-03-19 Marconi Commerce Systems Inc. Vapor recovery system for a fuel dispenser
US6347649B1 (en) 2000-11-16 2002-02-19 Marconi Commerce Systems Inc. Pressure sensor for a vapor recovery system
US6644360B1 (en) 2002-05-06 2003-11-11 Gilbarco Inc. Membrane and sensor for underground tank venting system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19719806A1 (de) * 1996-05-13 1998-01-22 Dresser Ind Benzinzapf- und Dampfrückgewinnungsvorrichtung und -verfahren
EP0985634A1 (fr) * 1998-09-09 2000-03-15 Gilbarco Inc. Dispositif de surveillance des vapeurs d'essence dans une station service
FR2823191A1 (fr) * 2001-04-06 2002-10-11 Tokheim Services France Procede de controle de la teneur en hydrocarbures d'une vapeur circulant dans une installation equipee d'un systeme d'aspiration de vapeur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2116506A1 (fr) * 2008-05-07 2009-11-11 Dresser Wayne Aktiebolag Régulation de récupération de vapeur

Also Published As

Publication number Publication date
CA2495507A1 (fr) 2005-08-27
US7258001B2 (en) 2007-08-21
US20050188776A1 (en) 2005-09-01
EP1568653A3 (fr) 2008-05-14
DE102004009643A1 (de) 2005-09-15

Similar Documents

Publication Publication Date Title
DE112010005176B4 (de) Brenngas-tankstelle, brenngas-einfüllsystem und brenngas-zufuhrverfahren
EP0559854B1 (fr) Procede et dispositif pour controler la capacite fonctionnelle d'un systeme de degazage du reservoir
EP1568653A2 (fr) Système de contrôle de ventilation pour citernes de carburants
EP3019846B1 (fr) Dispositif et procédé de mesure en continu de la consommation dynamique de carburant d'un moteur à combustion interne
DE60005306T2 (de) Prüfung von kraftstoffdampfrückgewinnungsanlagen
EP0429569A1 (fr) Reservoir a liquides avec dispositif de mesure hydrostatique du niveau
DE19540884A1 (de) Verfahren und Anlage zum Messen des Volumens durchströmender Flüssigkeiten
WO2008119588A1 (fr) Procédé de diagnostic d'une soupape d'arrêt
EP3899476B1 (fr) Procédé de détection et de prévention de fuite
DE2834213C2 (de) Vorrichtung zum Messen des Flüssigkeitspegels in einem Fahrzeugtank
EP1464932A2 (fr) Procédé pour la mesure continue de la consommation dynamique de liquid, régulateur de pression et dispositif pour la mesure continue de la consommation dynamique de liquid
EP1923349B1 (fr) Procédé destiné à la détermination des taux de retours de gaz sur des distributeurs d'essence
DE10031813C2 (de) Verfahren und Vorrichtung zum Bestimmen des Durchflusses eines Gasgemisches
DE112012005026T5 (de) Verfahren zum Ermitteln einer Leckage in einem Dampfmanagementsystem eines Kraftstoffsystems eines Kraftfahrzeugs sowie Dampfmanagementsysteme für ein Kraftfahrzeug mit Mitteln zum Ermitteln von Leckagen
DE3873526T2 (de) Durchflussmessvorrichtung.
DE102010023742A1 (de) Verfahren und Vorrichtung zum Erfassen von Flüssigkeit in einer Gasrückführungsleitung
DE10046921C1 (de) Verfahren und Vorrichtung zum Bestimmen von Fluidmengen
EP2918894B1 (fr) Dispositif et procédé de blocage de sécurité d'installations à gaz liquéfié
DE4434216C2 (de) Verfahren zur Diagnose von Kraftstoffleckagen
DE3723943A1 (de) Einrichtung zur messung und ueberwachung der in einen tank ueber das tankfuellrohr einstroemenden fluessigkeitsmenge und der dadurch aus dem tank- be- und entlueftungsorgan ausstroemenden gas/dampfgemisch-menge
DE69202841T2 (de) Kraftstoffabgabevorrichtung.
DE602005002472T2 (de) Gasrückführungssystem für Kraftstoff mit Temperatur-Sensor und Verfahren
DE602004000719T2 (de) Vorrichtung und Verfahren zur Kraftstoffdampf-Rückgewinnung
DE102005045974A1 (de) Verfahren zum Überwachen von Vorgängen auf einer Tankstelle
EP3572649A1 (fr) Procédé de fonctionnement d'un système d'entraînement d'un véhicule automobile, système d'entraînement et véhicule automobile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1074036

Country of ref document: HK

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

AKX Designation fees paid
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20081115

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1074036

Country of ref document: HK