EP1460033B1 - Vorrichtung und Verfahren zur Kraftstoffdampf-Rückgewinnung - Google Patents

Vorrichtung und Verfahren zur Kraftstoffdampf-Rückgewinnung Download PDF

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Publication number
EP1460033B1
EP1460033B1 EP04445017A EP04445017A EP1460033B1 EP 1460033 B1 EP1460033 B1 EP 1460033B1 EP 04445017 A EP04445017 A EP 04445017A EP 04445017 A EP04445017 A EP 04445017A EP 1460033 B1 EP1460033 B1 EP 1460033B1
Authority
EP
European Patent Office
Prior art keywords
vapour
fuel
motor vehicle
vehicle tank
volume
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.)
Expired - Lifetime
Application number
EP04445017A
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English (en)
French (fr)
Other versions
EP1460033A1 (de
Inventor
Bengt I. Larsson
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
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Filing date
Publication date
Application filed by Dresser Wayne AB filed Critical Dresser Wayne AB
Publication of EP1460033A1 publication Critical patent/EP1460033A1/de
Application granted granted Critical
Publication of EP1460033B1 publication Critical patent/EP1460033B1/de
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
    • B67D7/0478—Vapour recovery systems constructional features or components
    • B67D7/048—Vapour flow control means, e.g. valves, pumps
    • B67D7/0482—Vapour flow control means, e.g. valves, pumps using pumps driven at different flow rates
    • B67D7/0486—Pumps driven in response to electric signals indicative of pressure, temperature or liquid flow

Definitions

  • the present invention relates to a fuel dispensing device and method according to the preamble of claim 1 and 4, respectively, see GB 2 352 437 A.
  • vapour recovery is for instance achieved by arranging a vapour suction nozzle next to the fuel dispensing nozzle which is used for filling the tank with fuel. Vapour is then removed from the tank during the filling, at a certain rate, often controlled by the standard rate of the fuel dispensed to the tank.
  • vapour suction means when the vapour suction means are exposed to wear and lose their original adjustment, for instance due to leakage in a vapour pump, or when the fuel for some reason is dispensed at a different rate, the amount of fuel dispensed to the tank differs from the amount of vapour removed from the tank through the vapour suction nozzle. This can lead to an unwanted discharge of vapour into the air.
  • a method for checking the correct operation of a vapour recovery system which generates an alarm if the vapour delivery rate differs more than a certain amount from the liquid delivery rate.
  • the present invention relates to a device for recovering vapour from a motor vehicle tank according to claim 1, with preferred embodiments in claims 2-3, and to a method according to claim 4.
  • a fuel dispensing device for dispensing fuel to a motor vehicle tank comprises fuel dispensing means and vapour recovery means for recovering vapour from the motor vehicle tank, wherein the fuel dispensing.means comprises fuel flow rate measuring means for measuring the amount of dispensed fuel, and the vapour recovery means comprises vapour flow rate measuring means for measuring the amount of vapour recovered from the motor vehicle tank and adjusting means for adjusting the amount of vapour recovered from the motor vehicle tank, wherein the adjusting means are arranged to, at a predetermined periodicity, receive a fuel measuring value from the fuel flow rate measuring means, compare the fuel measuring value with a vapour measuring value from the vapour flow rate measuring means, and adjust the flow of vapour from the motor vehicle tank so that the volume of the vapour recovered from the motor vehicle tank is equal to the volume of the fuel dispensed to the motor vehicle tank.
  • the fuel flow rate measuring means are arranged to measure the fuel flow rate, and, only for each time interval where the fuel flow rate is above a predetermined value
  • vapour flow rate measuring means cannot be made to measure equally precise in all flow rate intervals, but can be made to measure reasonably precisely in a certain flow rate interval.
  • the periodicity can be determined by a predetermined volume of fuel dispensed to the motor vehicle tank, or the fuel flow rate measuring means can be arranged to also measure the number of separate refuelling events of motor vehicles tanks and the periodicity be determined by a predetermined number of separate refuelling events.
  • Fig. 1 is a schematic view of a fuel dispensing device.
  • the fuel dispensing device 1 in Fig. 1 comprises a fuel dispensing nozzle 2 with a fuel outlet 3 and a vapour inlet 4.
  • a fuel tank 5, a fuel pump 6 and fuel fow rate measuring means 7 are provided in the fuel dispensing device 1.
  • the fuel dispensing device 1 comprises a vapour tank 8, vapour flow rate measuring means 9, a vapour pump 10, a fuel line 12, a vapour line 13 and adjusting means 14.
  • a motor vehicle tank 11 is also shown in Fig. 1
  • Fuel is fed from the fuel tank 5, by means of the fuel pump 6, via the fuel line 12 and the fuel outlet 3, to the motor vehicle tank 11.
  • the output from the fuel flow rate measuring means 7 is used to indicate the amount of fuel dispensed to the motor vehicle tank 11 on a display (not shown) on the fuel dispensing device 1 and is further used for calculating the fuel cost for the filling up of the motor vehicle tank 11.
  • vapour is displaced by the fuel.
  • the vapour is sucked into the vapour inlet 4 by means of the vapour pump 10, via the vapour line 13, into the vapour tank 8. It is possible that the vapour tank 8 and the fuel tank 5 is the same tank, i.e. that the vapour is recovered to the fuel tank 5 instead of to a separate vapour tank 8.
  • the amount of vapour recovered from the motor vehicle tank 11 is determined by the vapour flow rate measuring means 9.
  • the adjusting means 14 are arranged to adjust the vapour pump 10 so that a desired volume of vapour is recovered from the motor vehicle tank.
  • vapour flow rate meters When designing vapour flow rate meters it is difficult, if not impossible to make it measuring the vapour flow correctly in a large flow rate interval. The measuring of the vapour flow rate is often inaccurate and so is of course also the measure of the volume. However, it is often possible to build a vapour flow rate measuring means which will measure with good accuracy in a certain limited flow rate interval, for instance 25-40 l/min. Therefore, according to an embodiment of the invention, the volume of the vapour and the volume of the fuel are only measured in a certain fuel flow rate interval, for instance above 25 1/min. The fuel flow rate during normal refuelling is most of the time, with exception from the first and the last part of the refuelling where it is lower, about 35-40 l/min.
  • the fuel flow rate is used for deciding the flow interval since the fuel flow rate measuring means, as opposed to the vapour flow rate measuring means, are very accurate.
  • the volume of vapour and the volume of fuel during a certain set of time intervals where the fuel flow rate was above 25 l/min is then compared by the adjusting means 14, and the vapour pump 10 is adjusted so that the volume of fuel and the volume of vapour during the measured time intervals is the same. For instance, the total volume when the fuel flow was above 25 l/min during three different filling-up instances can be used for the comparison and calibration of the vapour pump. Any measuring errors will then have less impact on the result.
  • the calibration of the vapour pump can be made at the beginning of a filling event, during such an event or between two successive events.
  • an alarm or indicator which indicates, for instance to the owner of the fuel distribution device, that an adjustment of the vapour pump has been made, is made or will be made.
  • the alarm can also be arranged to be activated when there has been a number of consecutive comparisons of the vapour volume and the fuel volume where there were discrepancies which lead to an adjustment of the vapour pump. This can be useful for the owner or the fuel distribution device when determining if the fuel distribution device needs servicing.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • 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)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Gas Separation By Absorption (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Claims (4)

  1. Kraftstoff-Zapfvorrichtung (1) zum Zapfen von Kraftstoff in einen Kraftfahrzeugtank (11), umfassend eine Kraftstoff-Zapfeinrichtung und eine Kraftstoffdampf-Rückgewinnungseinrichtung zur Rückgewinnung von Kraftstoffdampf aus dem Kraftfahrzeugtank, wobei die Kraftstoff-Zapfeinrichtung eine Kraftstoffdurchflussmenge-Messeinrichtung (7) zum Messen der Menge des gezapften Kraftstoffes umfasst und die Kraftstoffdampf-Rückgewinnungseinrichtung eine Kraftstoffdampfdurchstömmenge-Messeinrichtung (9) zum Messen der Menge des aus dem Kraftfahrzeugtank (11) zurückgewonnenen Kraftstoffdampfes und eine Einstelleinrichtung (14) zum Einstellen der Menge des aus dem Kraftfahrzeugtank (11) zurückgewonnenen Kraftstoffdampfes umfasst, wobei die Einstelleinrichtung (14) eingerichtet ist, zu einer vorgegebenen Periodizität einen Kraftstoff-Messwert von der Kraftstoffdurchflussmenge-Messeinrichtung (7) zu empfangen, den Kraftstoff-Messwert mit einem Kraftstoffdampf-Messwert von der Kraftstoffdampfdurchströmmenge-Messeinrichtung (9) zu vergleichen und den Strom des Kraftstoffdampfes aus dem Kraftfahrzeugtank (11) so einzustellen, dass das Volumen des aus dem Kraftfahrzeugtank (11) zurückgewonnenen Kraftstoffdampfes gleich dem Volumen des in den Kraftfahrzeugtank (11) gezapften Kraftstoffes ist, dadurch gekennzeichnet, dass die Kraftstoffdurchflussmenge-Messeinrichtung (7) eingerichtet ist, die Kraftstoffdurchflussmenge zu messen und nur für jedes Zeltintervall, in dem die Kraftstoffdurchflussmenge über einem Sollwert ist, das während dieses Zeitintervalls gezapfte Kraftstoffvolumen zu messen, und die Kraftstoffdampfdurchströmmenge-Messeinrichtung (9) eingerichtet ist, das Volumen des aus dem Kraftfahrzeugtank (11) zurückgewonnenen Kraftstoffdampfes nur während dieses Zeitintervalls zu messen, und wobei die Einstelleinrichtung (14) eingerichtet ist, um den aus dem Kraftfahrzeugtank (11) zurückgewonnenen Strom des Kraftstoffdampfes so einzustellen, dass das während einer vorgegebenen Gruppe von Zeitintervallen aus dem Kraftfahrzeugtank zurückgewonnene Gesamtvolumen des Kraftstoffdampfes gleich dem Gesamtvolumen des während derselben Gruppe von Zeitintervallen gezapften Kraftstoffes ist.
  2. Kraftstoff-Zapfvorrichtung nach Anspruch 1, wobei die Periodizität durch ein vor gegebenes Volumen von in den Kraftfahrzeugtank (11) gezapftem Kraftstoff bestimmt wird.
  3. Kraftstoff-Zapfvorrichtung nach Anspruch 1, wobei die Kraftstoffdurchflussmenge-Messeinrichtung (7) eingerichtet ist, um außerdem die Anzahl von einzeinen Auftankereignissen von Kraftfahrzeugtanks zu messen, und die Periodizität durch eine vorgegebene Anzahl von einzeinen Auftankereignissen bestimmt wird.
  4. Verfahren zur Rückgewinnung von Kraftstoffdampf aus einem Kraftfahrzeugtank (11) in Verbindung mit in den Kraftfahrzeugtank (11) gezapftem Kraftstoff, die folgenden Schritte umfassend:
    Messen des Volumens des in den Kraftfahrzeugtank (11) gezapften Kraftstoffes.
    Messen des Volumens des zurückgewonnenen Kraftstofldampfes.
    Vergleichen des Kraftstoffvolumens und des Kraftstoffdampfvolumens mit einer vorgegebenen Periodizität und dem Ergebnis des Vergleichs entsprechend
    Einstellen des Stroms von Kraftstoffdampf aus dem Kraftfahrzeugtank (11) so, dass die Volumina gleich sind,
    gekennzeichnet durch die Schritte
    Messen des Kraftstoffdurchflusses und nur für jedes Zeitintervall, in dem der Kraftstoffdurchfluss über einem Sollwert ist, Messen des während dieses Zeitintervalls gezapften Kraftstoffvolumens,
    Messen des aus dem Kraftfahrzeugtank (11) nur in diesem Zeitintervall zurückgewonnenen Kraftstoffdampfvolumens und
    Einstellen des aus dem Kraftfahrzeugtank (11) zurückgewonnenen Kraftstoffdampfstroms so, dass das Gesamtvolumen des aus dem Kraftfahrzeugtank (11) während einer vorgegebenen Gruppe von Zeitintervallen zurückgewonnenen Kraftstoffdampfes gleich dem Gesamtvolumen des während derselben Gruppe von Zeitintervallen gezapften Kraftstoffes ist.
EP04445017A 2003-03-20 2004-02-24 Vorrichtung und Verfahren zur Kraftstoffdampf-Rückgewinnung Expired - Lifetime EP1460033B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0300754 2003-03-20
SE0300754A SE526321C2 (sv) 2003-03-20 2003-03-20 Anordning och förfarande för ångåterföring

Publications (2)

Publication Number Publication Date
EP1460033A1 EP1460033A1 (de) 2004-09-22
EP1460033B1 true EP1460033B1 (de) 2006-04-26

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EP04445017A Expired - Lifetime EP1460033B1 (de) 2003-03-20 2004-02-24 Vorrichtung und Verfahren zur Kraftstoffdampf-Rückgewinnung

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EP (1) EP1460033B1 (de)
AT (1) ATE324348T1 (de)
DE (1) DE602004000719T2 (de)
SE (1) SE526321C2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE372954T1 (de) 2005-06-29 2007-09-15 Dresser Wayne Ab Gasrückführungssystem für kraftstoff mit temperatur-sensor und verfahren
EP2391577A4 (de) 2009-01-28 2012-11-14 Fuel Transfer Technologies Inc Düse zur verwendung in einem überlauffreien flüssigkeitsabgabesystem

Family Cites Families (9)

* 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
US5417256A (en) * 1993-10-04 1995-05-23 Gilbarco, Inc. Centralized vacuum assist vapor recovery system
DK0954508T3 (da) * 1997-01-21 2001-10-08 Gen Signal Uk Ltd Dampgenindvindingssystem til udleveringsanlæg for brændstof
FR2777878B1 (fr) * 1998-04-24 2000-06-30 Schlumberger Ind Sa Procede de recuperation de vapeurs emises au cours d'une distribution de liquide
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
US6170539B1 (en) * 1999-09-29 2001-01-09 Mokori Commerce Systems Inc. Vapor recovery system for fuel dispenser
US6460579B2 (en) * 1999-11-17 2002-10-08 Gilbarco Inc. Vapor flow and hydrocarbon concentration sensor for improved vapor recovery in fuel dispensers
SE523480C2 (sv) * 1999-11-26 2004-04-20 Dresser Wayne Ab Ångåterföringsanordning för en bränsletankningsanläggning

Also Published As

Publication number Publication date
SE0300754D0 (sv) 2003-03-20
DE602004000719T2 (de) 2006-09-14
EP1460033A1 (de) 2004-09-22
SE0300754L (sv) 2004-09-21
DE602004000719D1 (de) 2006-06-01
SE526321C2 (sv) 2005-08-23
ATE324348T1 (de) 2006-05-15

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