EP1048610A2 - Verfahren und Vorrichtung zum Betanken - Google Patents

Verfahren und Vorrichtung zum Betanken Download PDF

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Publication number
EP1048610A2
EP1048610A2 EP99850055A EP99850055A EP1048610A2 EP 1048610 A2 EP1048610 A2 EP 1048610A2 EP 99850055 A EP99850055 A EP 99850055A EP 99850055 A EP99850055 A EP 99850055A EP 1048610 A2 EP1048610 A2 EP 1048610A2
Authority
EP
European Patent Office
Prior art keywords
fuel
gas flow
vehicle
return conduit
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Withdrawn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
EP99850055A
Other languages
English (en)
French (fr)
Other versions
EP1048610A3 (de
Inventor
Bengt 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
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
Publication of EP1048610A2 publication Critical patent/EP1048610A2/de
Publication of EP1048610A3 publication Critical patent/EP1048610A3/de
Withdrawn legal-status Critical Current

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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

Definitions

  • the present invention relates generally to devices and a method for controlling a gas flow in connection with refuelling.
  • a so-called gas return conduit is therefore coaxially arranged inside or outside the hose which conducts fuel from a fuel container via the fuel dispenser to the car.
  • the gas return conduit conducts a corresponding volume of gas back to the fuel container.
  • this volume of gas consists of between 70% and 100% of saturated fuel vapours, i.e. different types of hydrocarbons.
  • charcoal canisters In the normal driving of a car, additional fuel vapours form in the tank, for instance, as the fuel splashes to and fro. To prevent these vapours from being passed directly to the surroundings, so-called charcoal canisters are now installed in new cars.
  • a charcoal canister can fundamentally be described as a charcoal filter which is in contact with the fuel tank, the car engine and the ambient air. Fuel vapours from the tank are discharged to the ambient air through the charcoal canister, a large amount of the hydrocarbons getting caught in the filter. When air from the surroundings is injected into the engine, also this air passes through the charcoal filter and absorbs a large amount of the hydrocarbons that have previously got caught in the filter but are now entrained to the engine to be burnt. This means that cars that are equipped with charcoal canisters are more environmentally friendly than cars without a charcoal canister.
  • a liquid seal is positioned between the filling hole and the tank of the car to prevent the fuel vapours from being discharged to the surroundings this way during the refuelling. Instead the vapours are forced out through the charcoal canister. Therefore clean air from the surroundings will be sucked back via the gas return conduit into the fuel container when filling up cars equipped with a charcoal canister.
  • This air contains extremely small amounts of hydrocarbons. Liquid fuel in the fuel container will therefore be dissolved in the air until this has become saturated. During this process, the air in the fuel container expands. With a view to preventing positive pressure, the extra volume of fuel vapours is discharged through a valve to the ambient air. Consequently part of the environmentally friendly effect which was to be achieved by using charcoal canisters will be lost.
  • An object of the present invention therefore is to provide a simple solution to the problems above in connection with refuelling, environmental aspects being taken into consideration as much as possible while at the same time the authorities' requirements are satisfied.
  • the invention is based on the idea that it should be possible to use the same fuel dispensing device for vehicles with or without a charcoal canister by the return of gas to the fuel container being controlled depending on whether the vehicle has a charcoal canister or not.
  • control can be carried out with the aid of a gas flow control means for controlling the gas flow in the gas return conduit, said gas flow control means being actuatable, by magnetic interaction, with the aid of a means in the vehicle.
  • the gas flow control means can keep the gas return conduit essentially open in vehicles without a charcoal canister and essentially closed in vehicles having a charcoal canister.
  • An advantage of this arrangement is that the fuel dispensing device can control the return of gas to the fuel container automatically without the person filling up the car making any operation, thus achieving increased reliability. Since the actuation made by the gas flow control means occurs in a contactless manner, also the risk of mechanical problems decreases. Owing to the use of magnetic interaction, neither mechanical nor electric switches need be used, which is a great advantage in the environment where the invention is to be used.
  • the gas flow control means comprises a movable component which, under the action of the means in the vehicle, is movable from a first to a second position for controlling the gas flow in the gas return conduit.
  • This action could be both direct, i.e. directly move the movable component, or indirect, i.e. move a second component that activates the movable component. If one chooses to provide all vehicles having a charcoal canister with a means that actuates the gas flow control means, the gas return conduit is open in the first position of the movable component and closed in the second position.
  • the movable component is enclosed in an enlarged portion of the gas return conduit.
  • the gas return conduit is essentially circular in cross-section, the enlarged portion is formed of a radial expansion along a section of the gas return conduit.
  • the movable component is a ball of a magnetic material since this enables easy shutting-off of the conduit, without necessitating special consideration of the geometry.
  • magnetic material is here meant ferromagnetic or ferrimagnetic materials.
  • the gas flow control means is preferably accommodated in the delivery nozzle, i.e. that part of the device which, when refuelling, is positioned closest to the filling hole of the vehicle.
  • the gas flow in the gas return conduit is controlled with the aid of a magnetic means which is adapted to be mounted in the vehicle and to actuate the gas flow control means by magnetic interaction, so that the conductibility of the gas return conduit changes.
  • the invention also concerns vehicles which comprise a magnetic means for controlling the gas flow in the gas return conduit.
  • vehicles equipped with a charcoal canister are provided with a magnetic means which actuates the gas flow control means so that the gas return conduit is essentially closed.
  • vehicles which are not equipped with a charcoal canister are provided with a magnetic means which instead actuates the gas flow control means to essentially open the gas return conduit. This variant is probably more convenient since this type of vehicle is likely to be less common in the future.
  • the magnetic means in the vehicle consists of a permanent magnet which is mounted adjacent to the fuel filling hole of the vehicle. This results in a device which is both inexpensive and extremely easy to mount.
  • the invention can also be described as a method of controlling, when filling a vehicle with fuel, the gas flow in a gas return conduit for returning fuel vapours to a fuel container, comprising the step of actuating, by magnetic interaction, a gas flow control means in the device for filling the vehicle with fuel, so that the conductibility of the gas return conduit changes.
  • Fig. 1 illustrates a car 1 with a fuel tank 2, a charcoal canister 3 and a permanent magnet 4 which is arranged in connection with the fuel filling hole 5.
  • fuel is conducted to the tank 2 of the car through a hose 6 from the fuel container 7 via the fuel dispenser 8.
  • the fuel container 7 has a valve 9 to compensate for the positive or negative pressure generated in the tank 7.
  • Fig. 2 is a cross-sectional view of the hose 6 along line A-A in Fig. 1, said hose 6 having a casing 10 which encloses a duct 11 which conducts fuel to the car 1, and a coaxially arranged gas return conduit 12.
  • Fig. 3 is a schematic view of the charcoal canister 3 which consists of a charcoal filter 13 and has a connection 14 to the fuel tank, a connection 15 for sucking in air from the surroundings and a connection 16 to the engine.
  • Fig. 4 is a schematic cross-sectional view of that part of the fuel hose 6 in which the gas flow control means 17 is arranged.
  • the gas flow control means 17 comprises a radial expansion 18 of a portion of the gas return conduit 12, said portion 18 being positioned in the delivery nozzle, i.e. that part of the hose 6 which is in contact with the car 1 during filling up.
  • the expanded portion 18 contains a piece of mesh 19 and a movable component in the form of a ball 12 of a magnetic material which in Fig. 4 is drawn in the position where it essentially closes the gas return conduit 12 for returning gas.
  • a vehicle equipped with a charcoal canister 3 is provided with a permanent magnet 4 in the vicinity of the fuel filling hole 5.
  • the magnet 4 is arranged so that when the delivery nozzle is inserted in the filling hole 5, attraction arises between the magnet 4 and the ball 20 in the gas flow control means 17.
  • the ball 20 which normally is in a position between the indicated position and the piece of mesh 19 in Fig. 4 moves to the indicated position and thus shuts off the gas return conduit 12.
  • a car 1 which is not equipped with a charcoal canister 3 is provided with a permanent magnet 4 in the vicinity of the fuel filling hole 5.
  • the magnet 4 is arranged so that when the delivery nozzle is inserted into the filling hole 5, repulsion arises between the magnet 4 and the ball 20 in the gas flow control means 17.
  • the ball 20 which in this case normally is in the indicated position in Fig. 4 then moves away therefrom and opens the gas return conduit 12.
  • the gas flow control means can be designed in various ways.
  • the magnet in the car need not, for instance, directly actuate the gas flow control means but can instead actuate a mechanical switch which closes and opens the gas return conduit.
  • the positioning of the magnet in the car and of the gas flow control means may also vary.
  • a further alternative solution is that a mechanically actuatable gas flow control means is arranged in that part of the fuel dispensing device which is in contact with the car during filling up.
  • the area around the fuel filling hole of the vehicle, or the filling hole itself, is designed in such manner that when, during filling up, the delivery nozzle of the fuel filling is inserted into the filling hole, the gas flow control means is actuated mechanically, either directly or indirectly by the vehicle, the return of gas to the fuel container being controlled.
  • a conceivable embodiment to achieve this function could be a bellows which is arranged around the front part of the delivery nozzle and which is in contact with a gas flow control means in the gas return conduit. When the bellows is pushed together, the conductibility of the gas return conduit changes as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP99850055A 1998-04-01 1999-04-01 Verfahren und Vorrichtung zum Betanken Withdrawn EP1048610A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9801143A SE9801143L (sv) 1998-04-01 1998-04-01 Anordningar och sätt vid bränslepåfyllning
SE9801143 1999-04-01

Publications (2)

Publication Number Publication Date
EP1048610A2 true EP1048610A2 (de) 2000-11-02
EP1048610A3 EP1048610A3 (de) 2001-01-31

Family

ID=20410821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99850055A Withdrawn EP1048610A3 (de) 1998-04-01 1999-04-01 Verfahren und Vorrichtung zum Betanken

Country Status (2)

Country Link
EP (1) EP1048610A3 (de)
SE (1) SE9801143L (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114933275A (zh) * 2022-04-28 2022-08-23 烟台杰瑞石油装备技术有限公司 一种连续加油控制系统及方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5562133A (en) * 1994-06-24 1996-10-08 Hiesky Corporation Fuel dispensing nozzle
US5782275A (en) * 1996-05-17 1998-07-21 Gilbarco Inc. Onboard vapor recovery detection

Also Published As

Publication number Publication date
SE9801143L (sv) 1999-10-02
EP1048610A3 (de) 2001-01-31
SE9801143D0 (sv) 1998-04-01

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