EP2241532B1 - Brennstoffabgabeeinheit und Verfahren zur Steuerung einer solchen Brennstoffabgabeeinheit - Google Patents

Brennstoffabgabeeinheit und Verfahren zur Steuerung einer solchen Brennstoffabgabeeinheit Download PDF

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Publication number
EP2241532B1
EP2241532B1 EP09157988A EP09157988A EP2241532B1 EP 2241532 B1 EP2241532 B1 EP 2241532B1 EP 09157988 A EP09157988 A EP 09157988A EP 09157988 A EP09157988 A EP 09157988A EP 2241532 B1 EP2241532 B1 EP 2241532B1
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EP
European Patent Office
Prior art keywords
fuel dispensing
vapour
fuel
dispensing unit
recovery system
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.)
Not-in-force
Application number
EP09157988A
Other languages
English (en)
French (fr)
Other versions
EP2241532A1 (de
Inventor
Bengt I. Larsson
Marie Håkansson
Mattias Mårtensson
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.)
Wayne Fueling Systems Sweden AB
Original Assignee
Dresser Wayne AB
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 Dresser Wayne AB filed Critical Dresser Wayne AB
Priority to EP09157988A priority Critical patent/EP2241532B1/de
Priority to PT09157988T priority patent/PT2241532E/pt
Priority to ES09157988T priority patent/ES2376825T3/es
Priority to AT09157988T priority patent/ATE533728T1/de
Publication of EP2241532A1 publication Critical patent/EP2241532A1/de
Application granted granted Critical
Publication of EP2241532B1 publication Critical patent/EP2241532B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B67D7/04—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
    • B67D7/0496—Performance test devices therefor

Definitions

  • the invention relates to a fuel dispensing unit for dispensing fuel to motor vehicles.
  • the present invention also relates to a method for controlling such a fuel dispensing unit.
  • vapour recovery is achieved, for instance, by arranging a vapour suction nozzle next to the fuel dispensing nozzle of a pistol grip for filling the tank with fuel. Vapour is then removed from the tank during filling, at a certain rate, which is often controlled by the standard rate of at which fuel is dispensed to the tank. Because of the importance of having a vapour recovery system that is intact, several methods for detecting possible malfunctions within the vapour recovery system and even the location of the malfunctions are available on the market today. A fuelling method according to the preamble of claim 1 is known from US 6 244 310 .
  • EP-1,995,209 discloses a method for control of a vapour recovery system for recovering vapour from a motor vehicle tank, said method comprising the steps of measuring a vapour recovery flow rate through a first vapour path between a fuel dispensing nozzle and a vapour tank and including a vapour pump and a flow rate measuring means, characterised in that a second flow rate is measured through a second path one end of which is connected to the first path downstream of the fuel dispensing nozzle and upstream of the flow rate measuring means and the vapour pump, and comparing the measured vapour recovery flow rate with the second flow rate in order to detect malfunction of the vapour recovery system.
  • a method for controlling a fuel dispensing unit having at least two fuel dispensing nozzles which are connected to a vapour recovery system comprising detecting a malfunction in the vapour recovery system of said fuel dispensing unit, and identifying the location of the malfunction.
  • the method is characterized in that after a predetermined number of successive malfunctions at the same location, at least one fuel dispensing nozzles in the fuel dispensing unit is adjusted. This is advantageous in that since only the fuel dispensing nozzles affected by the malfunction are shut off, the fuel dispensing unit may still function in a satisfying manner while the malfunction is attended. In this way, the customers will be satisfied and the financial losses for the owner of the fuel dispensing unit are minimized.
  • the at least one fuel dispensing nozzle effected by the successive malfunctions may be adjusted by a rectified vapour recovery regulation. This is advantageous in that the entire fuel dispensing unit will still be usable for a customer during this adjustment.
  • Another advantagous is that if only one fuel dispensing nozzle is affected by the successive malfunctions, then only this one fuel dispensing nozzle is adjusted while the remaining nozzles of the fuel dispensing unit are left unadjusted.
  • the at least one fuel dispensing nozzle effected by the successive malfunctions may be adjusted by being shut off. If the at least one fuel dispensing nozzle effected by the successive malfunctions cannot be adjusted in a simple manner, it will be shut off in order to prevent fuel vapour from leaking out into the surronding environment. This is a way to ensure a safe and reliable fuel dispensing unit with regard to the surronding environment.
  • One fuel dispensing nozzle may be shut off if the successive malfunctions are located at this fuel dispensing nozzle. This is advantageous in that the entire fuel dispensing unit will be functioning as usual, except for this one fuel dispensing nozzle which is shut off under a short period until being cleaned or repaired. The inconveniences for the customers using the fuel dispensing unit and the financial losses for the owner due to the shut off fuel dispensing nozzle are thus minimized.
  • a plurality of fuel dispensing nozzles may be shut off if the successive malfunctions are located downstream from the fuel dispensing nozzles.
  • downstream from the fuel dispensing nozzles is meant further down in the vapour recovery system at a location where all of the fuel dispensing nozzles connected to the vapour recovery system are affected by the malfunction, e.g. by a vapour pump. If the malfunction is located in a part within the vapour recovery system concerning a plurality of fuel dispensing nozzles, accordingly, all of the effected fuel dispensing nozzles will be shut off until the malfunction has been attended to.
  • the predetermined number of successive malfunctions may be 5-15, preferably 8-12, and more preferable about 10. This is advantageous in that the malfunction will established in a certain and reliable manner.
  • the invention relates to a fuel dispensing unit for dispensing fuel to motor vehicles, comprising at least two fuel dispensing nozzles for dispensing fuel to a motor vehicle tank, a vapour recovery system connected to the fuel dispensing nozzles for recovering fuel vapour from the motor vehicle tank, and a control system for detecting a malfunction and identifying its location in said vapour recovery system.
  • the fuel dispensing unit is characterized in that said control system is adapted to execute the method described above. This is advantageous in that since only the fuel dispensing nozzles affected by the malfunction are shut off, the fuel dispensing unit may still function in a satisfying manner while the malfunction is attended to. In this way, the customers stay satisfied and the financial losses for the owner of the fuel dispensing unit are minimized.
  • Fig. 1 illustrates a fuel dispensing unit 1, having four hose storage spaces 2 on each opposing side of the fuel dispensing unit 1, an electrical cabinet 3 containing all the electronics for the fuel dispensing unit 1, a hydraulic cabinet 4 containing fuel dispensing means (not shown), e.g. fuel metering means, valves, vapour recovery system etc, and a column 5 extending vertically between and separating the electrical cabinet 3 and the hydraulic cabinet 4 from the hose storage spaces 2.
  • the fuel dispensing unit 1 is connected to an underground reservoir (not shown) containing fuel.
  • the fuel When filling up the tank of a motor vehicle, the fuel is pumped from the underground reservoir by means of a pump (not shown) which is located in the hydraulic cabinet 4, and from there to the column 5 and out to a fuel dispensing nozzle 6 via a hose (not shown).
  • a pump not shown
  • the hose When filling-up does not take place, the hose is accommodated in a hose storage place 2 and the fuel dispensing nozzle 6 is inserted in a nozzle boot (not shown).
  • a first embodiment of a vapour recovery system 7 conveys fuel vapour from a motor vehicle tank 8 to a vapour tank 9 along a first vapour path 10.
  • One end of the vapour path 10 is arranged via a valve 11 within a fuel dispensing nozzle 6.
  • Each fuel dispensing nozzle 6 comprises a valve 11.
  • a vapour pump 12, a valve 13, a damper 14 and a flow rate measuring means 15 are arranged in the first vapour path 10.
  • a second path 16 is at one end connected to the first vapour path 10, and the other end is an open end connected to the atmosphere.
  • a valve 17 is arranged in the second path 16.
  • the damper 14 is preferably incorporated in the first vapour path 10 in order to reduce variations in vapour flow so that the vapour pump 12 is exposed to a uniform vapour flow.
  • the damper 14 can be of a simple construction, e.g. a fixed volume.
  • valve 17 During the filling-up of a vehicle, the valve 17 is closed.
  • the valve 11 belonging to the fuel dispensing nozzle 6 being used as well as valve 13 are open and the vapour pump 12 is activated. Vapour is thereby drawn from the motor vehicle tank 8 through the valve 11.
  • the vapour enters the flow rate measuring means 15, flows through the damper 14 and is accumulated in the vapour tank 9.
  • the flow rate measuring means 15 measures the flow rate of vapour.
  • the measured flow rate is compared to a reference flow rate corresponding to the actual speed of the vapour pump 12.
  • a comparing means (not shown) is connected to the flow rate measuring means 15 and the vapour pump 12 so that a specific pump speed corresponds to a specific reference flow rate.
  • the valve 11 is closed and the fuel dispensing nozzle 6 is detached from the motor vehicle tank 8. If the measured vapour flow rate equals the reference flow rate, or lies within a predetermined interval from the reference volume, the vapour recovery system 7 is considered to operate satisfactory and no further action is needed. If the measured flow rate lies outside the predetermined range, the vapour recovery system 7 is considered to malfunction and the built-in control of the vapour recovery system 7 is activated.
  • the valve 17 is opened, and the vapour pump 12 draws air from the open end of the second path 16 through the second path 16, the flow rate measuring means 15, the damper 14, the valve 13 and down to the vapour tank 9.
  • the flow rate measuring means 15 measures a new flow rate of air, and the measured new flow rate is compared to a new reference flow rate corresponding to the actual speed of the vapour pump 12. If the measured new flow rate lies within a predetermined range, the vapour recovery system 7 is considered to malfunction upstream of where the second path 16 connects to the first path 10. If the measured new flow rate lies outside the predetermined range, the vapour recovery system 7 is considered to malfunction downstream of where the second path 16 connects to the first path 10. Information related to any of these conclusions is e.g.
  • a control system 18 electrically connected (as indicated by the dashed line in Fig. 2 ) to the flow rate measuring means 15.
  • Further equipment (not shown) is used to let an operator receive said information. Such equipment may e.g. enable wireless transmission of the information to a server. Malfunction as described above may e.g. be a result of dust particles which have been drawn into the first vapour path 10 via the fuel dispensing nozzle 6.
  • the flow rate measuring means 15, the damper 14, the valve 13 and the fuel pump 12 may be arranged in another order along the first vapour path 10 than is shown in Fig. 2 . Further components may also be arranged in the first vapour path 10 in order to enhance the function or efficiency of the vapour recovery system 7.
  • no reference flow rate is provided.
  • the valve 11 is closed and the fuel dispensing nozzle 6 is detached from the motor vehicle tank 8.
  • the built-in control of the vapour recovery system is activated whereby the valve 17 is opened, and the vapour pump 12, operating at the same speed as during the previously performed filling-up, draws air from the open end of the second path 16 through the second path 16, the flow rate measuring means 15, the damper 14, the valve 13 and down to the vapour tank 9.
  • the flow rate measuring means 15 measures a new flow rate of air.
  • a malfunction of the vapour recovery system is considered to be present somewhere in the first path upstream of where the second path is connected. Such malfunction may e.g. be an effect of a constriction in the first vapour path, e.g. in the fuel dispensing nozzle.
  • the built-in control is activated after each filling-up, or after a predetermined number-of filling-ups. In one method, the built-in control is activated when necessary, i.e. after an indication of a malfunction in the vapour recovery system 7.
  • a fuel dispensing unit 100 is shown schematically.
  • the fuel dispensing unit 100 has a fuel dispensing means 50 and a vapour recovery system 7.
  • the fuel dispensing means 50 has a fuel pump 54 that draws fuel from a fuel tank 58, via a fuel path 52 through a flow meter 56 and to a fuel dispensing nozzle 6.
  • the fuel dispensing nozzle 6 is connected to a motor vehicle tank 8.
  • the fuel pump 54 is activated, and the flow meter 56 measures a volume of dispensed fuel.
  • the flow meter 56 and the fuel pump 54 are connected to control means (not shown) for adjusting the speed of the fuel pump 54.
  • the measured volume of dispensed fuel is transmitted to a second control means (not shown) for adjusting the speed of the vapour pump 12.
  • the fuel tank 58 and the vapour tank 9 can be arranged as one single unit.
  • a plurality of fuel dispensing nozzles 6, each having a valve 11, may be connected to the fuel dispensing means 50 and the vapour recovery system 7.
  • the valve 11 has two separate valves, one positioned inside the fuel path 52 and one positioned inside the vapour path 10.
  • the two valves arranged in the valve 11 are automatically closed when the fuel dispensing nozzle 6 is put in a vertical direction, i.e. after filling-up is finished.
  • the vapour recovery system 7 enables the built-in control to be performed when said valves 11 are closed i.e. at any time before or after filling-up.
  • the control system 18 which is electrically connected to the flow rate measuring means 15. If a predetermined number of successive malfunctions, e.g. 10, are detected at the same location, the fuel dispensing nozzles 6 affected by the malfunction will be adjusted. Accordingly, if the successive malfunctions are located at one fuel dispensing nozzle 6 or its valve 11, thereby only affecting this one fuel dispensing nozzle 6, it will be adjusted while the other fuel dispensing nozzles 6 of the fuel dispensing unit 1 remain unadjusted.
  • a malfunction considered to be located at the fuel dispensing nozzle 6 could actually depend on a clogging of the coaxial vapour recovery path within the fuel dispensing hose. However, if the successive malfunctions are located downstream of the second path 16 and thereby affects a plurality of fuel dispensing nozzles 6, they will all be adjusted.
  • the fuel dispensing nozzles 6 may be adjusted by a rectified vapour recovery regulation or by being shut off.
  • the vapour recovery system 7 may e.g. be regulated by means of the pump 12 or the valve 13, e.g. by the speed of the pump 12 being increased or the opening of the valve 13 being increased so that the vapour flow rate is increased.
  • the predetermined number of successive malfunctions may be 5-15, preferably 8-12, and more preferable about 10.
  • each vapour recovery system 7 is connected to four different fuel dispensing nozzles 6, respectively (see Fig. 2 ). If a malfunction is detected concerning one of the fuel dispensing nozzles 6 or its valve 11, i.e. upstream of the second path 16, a predetermined number of times, e.g. 3 times, the fuel dispensing nozzle 6 will be adjusted by means of a rectified vapour recovery regulation.
  • the vapour recovery regulation is rectified by means of the valve 13, which is opened to a larger extent than the default value such that the suction from the pump 12 increases when the affected fuel dispensing nozzle 6 is used. Accordingly, the adjustment will only apply for this one fuel dispensing nozzle 6 affected by the detected malfunction.
  • vapour recovery system 7 If a malfunction is detected in the vapour recovery system 7 downstream of the second path 16, one possible cause may be liquid in the vapour recovery system 7. Since all of the fuel dispensing nozzles 6 connected to the vapour recovery system 7 will be affected by such an event, an indication of liquid in the vapour recovery system 7 could be that all of its connected fuel dispensing nozzles 6 starts to malfunction.
  • the built-in control of the vapour recovery system 7 is activated.
  • the valve 17 is opened, and the vapour pump 12 draws air from the open end of the second path 16 through the second path 16, the flow rate measuring means 15, the damper 14, the valve 13 and down to the vapour tank 9. This way, the vapour recovery system 7 will be emptied from possible liquids.
  • a fuel dispensing unit is provided, which is adapted to execute the method according the above described features.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (7)

  1. Verfahren zur Steuerung einer Kraftstoffabgabeeinheit, die mindestens zwei Kraftstoffabgabedüsen aufweist, welche mit einem Dampfrückgewinnungssystem verbunden sind, umfassend:
    Erkennen einer Funktionsstörung in dem
    Dampfrückgewinnungssystem der Kraftstoffabgabeeinheit, und
    Identifizieren des Ortes der Funktionsstörung,
    dadurch gekennzeichnet, dass
    nach einer vorbestimmten Anzahl von aufeinanderfolgenden Funktionsstörungen an derselben Stelle mindestens eine Kraftstoffabgabedüse in der Kraftstoffabgabeeinheit verstellt wird.
  2. Verfahren nach Anspruch 1, wobei die mindestens eine Kraftstoffabgabedüse, die von den aufeinanderfolgenden Funktionsstörungen betroffen ist, durch eine korrigierte Dampfrückgewinnungsregelung verstellt wird.
  3. Verfahren nach Anspruch 1 oder 2, wobei die mindestens eine Kraftstoffabgabedüse, die von den aufeinanderfolgenden Funktionsstörungen betroffen ist, verstellt wird, indem sie abgeschaltet wird.
  4. Verfahren nach einem der Ansprüche 1-3, wobei eine Kraftstoffabgabedüse abgeschaltet wird, falls der Ort der aufeinanderfolgenden Funktionsstörungen diese Kraftstoffabgabedüse ist.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei mehrere Kraftstoffabgabedüsen abgeschaltet werden, falls der Ort der aufeinanderfolgenden Funktionsstörungen sich stromabwärts der Kraftstoffabgabedüsen befindet.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei die vorbestimmte Anzahl von aufeinanderfolgenden Funktionsstörungen 5-15, vorzugsweise 8-12 und stärker bevorzugt etwa 10 beträgt.
  7. Kraftstoffabgabeeinheit (1) zum Abgeben von Kraftstoff an Kraftfahrzeuge, welche umfasst:
    mindestens zwei Kraftstoffabgabedüsen (6) zum Abgeben von Kraftstoff an einen Kraftfahrzeugtank (8),
    ein mit den Kraftstoffabgabedüsen verbundenes Dampfrückgewinnungssystem (7) zum Rückgewinnen von Kraftstoffdampf von dem Kraftfahrzeugtank (8), und
    ein Steuerungssystem (18) zum Erkennen einer Funktionsstörung und Identifizieren ihres Ortes in dem Dampfrückgewinnungssystem (7),
    dadurch gekennzeichnet, dass das Steuerungssystem (18) dazu eingerichtet ist, das Verfahren gemäß den Ansprüchen 1-6 auszuführen.
EP09157988A 2009-04-15 2009-04-15 Brennstoffabgabeeinheit und Verfahren zur Steuerung einer solchen Brennstoffabgabeeinheit Not-in-force EP2241532B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09157988A EP2241532B1 (de) 2009-04-15 2009-04-15 Brennstoffabgabeeinheit und Verfahren zur Steuerung einer solchen Brennstoffabgabeeinheit
PT09157988T PT2241532E (pt) 2009-04-15 2009-04-15 Unidade de distribuição de combustível e um método para o controlo de uma tal unidade de distribuição de combustível
ES09157988T ES2376825T3 (es) 2009-04-15 2009-04-15 Una unidad de dosificación de combustible, y un método para controlar una unidad de dosificación de combustible de este tipo
AT09157988T ATE533728T1 (de) 2009-04-15 2009-04-15 Brennstoffabgabeeinheit und verfahren zur steuerung einer solchen brennstoffabgabeeinheit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09157988A EP2241532B1 (de) 2009-04-15 2009-04-15 Brennstoffabgabeeinheit und Verfahren zur Steuerung einer solchen Brennstoffabgabeeinheit

Publications (2)

Publication Number Publication Date
EP2241532A1 EP2241532A1 (de) 2010-10-20
EP2241532B1 true EP2241532B1 (de) 2011-11-16

Family

ID=42026078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09157988A Not-in-force EP2241532B1 (de) 2009-04-15 2009-04-15 Brennstoffabgabeeinheit und Verfahren zur Steuerung einer solchen Brennstoffabgabeeinheit

Country Status (4)

Country Link
EP (1) EP2241532B1 (de)
AT (1) ATE533728T1 (de)
ES (1) ES2376825T3 (de)
PT (1) PT2241532E (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU752463B2 (en) * 1998-08-25 2002-09-19 Marconi Commerce Systems Inc. Fuel delivery system
FR2796636B1 (fr) * 1999-07-23 2002-01-04 Solutions Serv Syst France Procede de controle du bon fonctionnement du systeme de recuperation de vapeur emise dans une installation de distribution de carburant ainsi qu'installation permettant la mise en oeuvre de ce procede
EP1995209A1 (de) 2007-05-24 2008-11-26 Dresser Wayne Aktiebolag Dampfrückgewinnungsystem, Verfahren zu dessen Steuerung und Kraftstoffabgabevorrichtung

Also Published As

Publication number Publication date
EP2241532A1 (de) 2010-10-20
ES2376825T3 (es) 2012-03-20
PT2241532E (pt) 2012-02-08
ATE533728T1 (de) 2011-12-15

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