EP2578529B1 - Procédé et dispositif de transfer du carburant depuis le réservoir de carburant d'un véhicule automobile - Google Patents

Procédé et dispositif de transfer du carburant depuis le réservoir de carburant d'un véhicule automobile Download PDF

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Publication number
EP2578529B1
EP2578529B1 EP12185622.3A EP12185622A EP2578529B1 EP 2578529 B1 EP2578529 B1 EP 2578529B1 EP 12185622 A EP12185622 A EP 12185622A EP 2578529 B1 EP2578529 B1 EP 2578529B1
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EP
European Patent Office
Prior art keywords
fuel
motor vehicle
control device
fuel tank
diagnostic test
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.)
Active
Application number
EP12185622.3A
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German (de)
English (en)
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EP2578529A1 (fr
Inventor
Klaus Treiber
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP2578529A1 publication Critical patent/EP2578529A1/fr
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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
    • 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

Definitions

  • the invention relates to a method and a device for conveying fuel from the fuel tank of a motor vehicle.
  • Such pumping may e.g. by introducing a suction device into the fuel filler neck or in a service opening, which is present for example in the vehicle interior
  • the invention provides a method and apparatus for extracting fuel from the fuel tank of a motor vehicle, which in a simple manner enables complete draining of the fuel tank without requiring an additional service opening.
  • An inventive method for conveying fuel from the fuel tank of a motor vehicle includes the steps to connect a diagnostic tester with a control unit of the motor vehicle and control the control unit of the motor vehicle by the diagnostic test device such that the control unit drives the fuel pump of the motor vehicle, so that this fuel from the Fuel tank promotes.
  • a diagnostic test device for motor vehicles, which have a fuel tank and a control unit, is designed for electrical connection to the control unit and is able to control the control unit such that it drives the fuel pump of the motor vehicle in such a way that the fuel pump receives fuel from the fuel tank of the motor vehicle promotes.
  • An inventive method and a device enable the user or vehicle mechanic to easily and conveniently remove fuel from the fuel tank of a motor vehicle and to completely empty the fuel tank of the motor vehicle when needed.
  • so-called saddle tanks which can be emptied only with difficulty using the previously known methods, can be completely emptied.
  • the emptying of the fuel tank is also not prevented or made difficult by a possibly to prevent fuel theft in the fuel filler neck built Absaugêt.
  • On the access to a usually difficult to access service opening which requires, for example, the expansion of the rear seat, parts of the interior trim and / or the carpet can be dispensed with.
  • the fuel tank can also without lift, z. As in the breakdown service on the road, and emptied on the costly and time-consuming expansion of a filled fuel tank to empty it outside the vehicle, can be dispensed with.
  • An object of the invention is to prevent overheating of the fuel pump. This object is solved by the features of claims 1 and 9.
  • the emptying of the fuel tank runs off automatically after the start, so that the fuel tank emptying can also be performed by less intensively trained workshop personnel and workshop personnel can perform other activities during the fuel tank emptying.
  • the method prior to driving the controller, includes connecting an output of the fuel pump, eg, with a hose, to an external container to convey the fuel removed from the fuel tank to the external container.
  • the from the fuel tank withdrawn fuel can be collected in the external container and optionally reused or disposed of properly. Pollution of the environment by the fuel removed from the fuel tank is reliably avoided.
  • the controller is driven so that it drives the fuel pump for at least a defined period of time. Characterized in that the fuel pump is driven only over a defined and limited period of time, dry running, overheating and the resulting possible damage or destruction of the fuel pump is reliably prevented.
  • the defined period is preferably 30 seconds when the fuel pump is driven periodically and 120 seconds when the fuel pump is continuously driven. Driving for such limited periods reliably prevents damage to the fuel pump by dry running and / or overheating.
  • the fuel pump is periodically driven for a number of predetermined periods of preferably 30 seconds each to allow for complete draining of the fuel tank while avoiding dry running and / or overheating of the fuel pump.
  • the amount of fuel delivered from the fuel tank during a defined period of time is determined, for example, by measuring the flow rate through the drain of the fuel pump or the weight gain of the external reservoir into which the fuel drawn from the fuel tank is directed. Determining the amount of fuel delivered in a defined period of time and taken out of the fuel tank makes it possible to check the correct functioning of the fuel pump.
  • An inventive diagnostic test device and the method according to the invention can be used in addition to the emptying of the fuel tank and for checking the function of the fuel pump.
  • the device reads a fuel tank fill signal from the controller of the motor vehicle and controls the controller in response to the read fuel fill signal.
  • the evaluation of the fuel filling signal takes place, for example, in the diagnostic test device, so that no additional intelligence in the control unit is required and the method with conventional control devices, as they are currently installed in motor vehicles, can be performed.
  • the fuel tank fill signal is available, for example, on the CAN bus of the motor vehicle in a manufacturer-specific protocol or in a standardized OBD software.
  • the fuel pump is preferably repeatedly cycled until the fuel tank fill signal indicates that fuel is no longer in the fuel tank.
  • a device according to the invention (diagnostic test device) 4 is, as in the Fig. 1 shown electrically connected via a first single or multi-pole data line 10 to the control unit 8 in the interior of a motor vehicle 2.
  • the diagnostic test device 4 may additionally be connected via further connecting lines 9 to other components of the motor vehicle 2.
  • the diagnostic test device 4 is connected, for example, to the power supply to the battery 3 of the motor vehicle 2.
  • the diagnostic test device 4 is connected to an input and output device 6, which is designed to enable the input of data into the diagnostic test device 4 and to display the results of the diagnostic test.
  • the input and output device 6 may be formed, for example, as a portable computer (laptop). However, other embodiments of such input and output device 6 are possible as long as they allow the input and output of data in and out of the diagnostic test device 4.
  • Fig. 2 shows a schematic representation of the operation of the invention.
  • Fuel is stored in a fuel tank 16 shown schematically and may be removed from the fuel tank 16 via a fuel extraction line 18.
  • a fuel extraction line 18 In the fuel extraction line 18, a preferably electrically driven fuel pump 14 is provided, which takes the fuel through the fuel extraction line 18 from the fuel tank 16 during operation and outputs under elevated pressure in a fuel pressure line 20.
  • the fuel pump 14 is actuated via a control line 12 from the control unit 8 of the motor vehicle 2.
  • the fuel pressure line is one in which Fig. 2 not shown, injection device of the engine of the motor vehicle 2 connected to supply the latter during operation the necessary fuel.
  • the fuel pressure line 20 e.g. by a hose connected to an external reservoir 22 adapted to receive fuel taken from the fuel tank 16.
  • a flow meter 24 is provided, which makes it possible to measure the amount of fuel flowing through the fuel pressure line 20.
  • a measuring device may be provided, which measures, for example, based on the level of the fuel in the external container 22 or the weight gain of the external container 22, which taken from the fuel tank 16 and introduced into the external container 22 amount of fuel.
  • control unit 8 as already in the Fig. 1 shown connected via a first data line 10 with a diagnostic test device 4 according to the invention.
  • the control unit 8 controls the diagnostic test device 4 by appropriate signals on the data line 10, the control unit 8 such that the control unit 8 via the further control line 12, the fuel pump 14 drives such that this fuel through the fuel extraction line 18 from the Removing fuel tank 16 and outputs through the fuel pressure line 20 into the external container 22.
  • the fuel pump 14 is operated without the engine of the motor vehicle 2 is in operation.
  • the amount of fuel flowing through the fuel pressure line 20 is optionally measured by the flow meter 24 and the measurement result is reported back to the diagnostic test device 4.
  • the diagnostic test device 4 can in particular be designed so that it controls the control unit 8 such that it drives the fuel pump 14 periodically at intervals of approximately 30 seconds.
  • the diagnostic test device 4 the control unit 8 to control so that it drives the fuel pump once over a longer period of, for example 120s.
  • a level sensor 26 is provided which outputs a level signal to the control unit 8.
  • the fuel level signal is evaluated by the controller 8, or preferably by the diagnostic tester 4, and the operation of the fuel pump 14 is stopped when the fuel level signal indicates that the fuel tank 16 is completely depleted. Dry running and overheating of the fuel pump 14 is reliably prevented.
  • the operation of the fuel pump 14 is stopped when the flow meter 24 detects that fuel is no longer flowing through the fuel pressure line 20, so that the fuel pump 14 runs dry and there is a risk that the fuel pump 14 is overheated and damaged.
  • connection between the diagnostic test device 4 and the control unit 8 is preferably via the standard interface, which is also used for diagnostic purposes for connecting the diagnostic test device 4 to the control unit 8. At the control unit 8 so no changes must be made.
  • the method according to the invention can also be carried out with a diagnostic test device 4 according to the invention in conjunction with control devices 8 already installed in motor vehicles 2, without the motor vehicles 2 or the control devices 8 installed therein having to be retrofitted or replaced.
  • the user is preferably referred to before the start of the tank emptying function by the diagnostic test device 4 via the input and output device 6 on the safety regulations to be complied with regard to component protection, accident prevention and environmental protection.
  • the depletion of the fuel tank 16 is not started until the user confirms that he has read the displayed safety instructions.
  • An inventive method and a device according to the invention allow both the measurement of the delivery rate of the fuel pump 14 for diagnostic purposes as well as a partial or complete emptying of the fuel tank 16, without the need for mechanical intervention in the motor vehicle 2 are required. This will also allow small workshops to expand their range of diagnostics products and to offer the functions of tank emptying and fuel pump diagnostics.
  • the invention provides a comfortable and safe tank emptying function and at the same time a fuel flow rate measurement both for workshops and for mobile (breakdown) auxiliary forces available.
  • Used car, leasing and car rental companies and car recyclers can easily and conveniently pump off excess or incorrectly fueled fuel, eliminating the need for time-consuming and expensive garage visits.

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  • 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)

Claims (10)

  1. Procédé pour transférer du carburant depuis le réservoir de carburant (16) d'un véhicule automobile (2) qui présente un réservoir de carburant (16), une pompe à carburant (14) et un appareil de commande (8), le procédé incluant la connexion d'un appareil de test diagnostic (4) à l'appareil de commande (8) du véhicule automobile (2) et la commande de l'appareil de commande (8) par l'appareil de test diagnostic (4) de telle sorte que l'appareil de commande (8) entraîne la pompe à carburant (14) du véhicule automobile (2) de telle sorte que la pompe à carburant (14) transfère du carburant depuis le réservoir de carburant (16) du véhicule automobile (2) par une conduite de pression de carburant (20), caractérisé en ce que le fonctionnement de la pompe à carburant (14) est arrêté lorsqu'un appareil de mesure de débit (24) dans la conduite de pression de carburant (20) établit que plus aucun carburant ne s'écoule à travers la conduite de pression de carburant (20).
  2. Procédé selon la revendication 1, dans lequel le procédé inclut, avant la commande de l'appareil de commande (8), la connexion d'une sortie de la pompe à carburant (14) à un réservoir externe (22).
  3. Procédé selon la revendication 1 ou 2, dans lequel l'appareil de test diagnostic (4) commande l'appareil de commande (8) pendant au moins un intervalle de temps défini.
  4. Procédé selon la revendication 3, dans lequel l'intervalle de temps défini est de 30 secondes ou de 120 secondes.
  5. Procédé selon la revendication 3 ou 4, dans lequel l'appareil de test diagnostic (4) commande l'appareil de commande (8) de manière périodique pendant un certain nombre d'intervalles de temps définis.
  6. Procédé selon l'une quelconque des revendications 3 à 5, dans lequel le procédé inclut la détermination de la quantité de carburant transférée pendant un intervalle de temps défini.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'appareil de diagnostic lit un signal de remplissage du réservoir de carburant dans l'appareil de commande (8) et commande l'appareil de commande (8) en fonction du signal de remplissage du réservoir de carburant.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel l'appareil de commande (8) est commandé jusqu'à ce que et/ou suffisamment souvent pour que le réservoir de carburant (16) soit complètement vidé.
  9. Appareil de test diagnostic (4) pour un véhicule automobile (2) comprenant un réservoir de carburant (16) et un appareil de commande (8), l'appareil de test diagnostic (4) étant réalisé pour la connexion électrique à l'appareil de commande (8) du véhicule automobile (2), l'appareil de test diagnostic (4) étant réalisé de manière à commander l'appareil de commande (8) de telle sorte qu'il entraîne une pompe à carburant (14) du véhicule automobile (2), afin de transférer du carburant depuis le réservoir de carburant (16) du véhicule automobile (2) par une conduite de pression de carburant (20), caractérisé en ce que le fonctionnement de la pompe à carburant (14) est arrêté lorsqu'un appareil de mesure de débit (24) dans la conduite de pression de carburant (20) établit que plus aucun carburant ne s'écoule à travers la conduite de pression de carburant (20).
  10. Appareil de test diagnostic (4) selon la revendication 9, réalisé de manière à mettre en oeuvre un procédé selon l'une quelconque des revendications 2 à 8.
EP12185622.3A 2011-10-06 2012-09-24 Procédé et dispositif de transfer du carburant depuis le réservoir de carburant d'un véhicule automobile Active EP2578529B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011084074A DE102011084074A1 (de) 2011-10-06 2011-10-06 Verfahren und Vorrichtung zum Fördern von Kraftstoff aus dem Kraftstofftank eines Kraftfahrzeugs

Publications (2)

Publication Number Publication Date
EP2578529A1 EP2578529A1 (fr) 2013-04-10
EP2578529B1 true EP2578529B1 (fr) 2015-02-25

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Application Number Title Priority Date Filing Date
EP12185622.3A Active EP2578529B1 (fr) 2011-10-06 2012-09-24 Procédé et dispositif de transfer du carburant depuis le réservoir de carburant d'un véhicule automobile

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EP (1) EP2578529B1 (fr)
DE (1) DE102011084074A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505123B1 (en) 2000-07-24 2003-01-07 Weatherbank, Inc. Interactive weather advisory system
EP3225680A1 (fr) * 2016-03-29 2017-10-04 Per Tunestal Méthode à reconditionner un moteur à allumage par compression

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10247173A1 (de) * 2002-10-10 2004-04-22 Daimlerchrysler Ag Gekammerter Kraftstoffbehälter für Kraftfahrzeuge
US7171995B2 (en) * 2005-01-25 2007-02-06 Eshenour Richard E Fuel-recovery system and method
GB0525134D0 (en) * 2005-12-09 2006-01-18 Itt Mfg Enterprises Inc Refuelling pumps
US20090283174A1 (en) * 2008-05-16 2009-11-19 Mitchell Steven C Fuel reclamation device
WO2011094711A1 (fr) * 2010-01-29 2011-08-04 Jej Holdings Llc. Appareil et procédé de récupération de carburant

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DE102011084074A1 (de) 2013-04-11

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