EP1967725A2 - Procédé destiné au fonctionnement d'une pompe à carburant - Google Patents

Procédé destiné au fonctionnement d'une pompe à carburant Download PDF

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Publication number
EP1967725A2
EP1967725A2 EP07023520A EP07023520A EP1967725A2 EP 1967725 A2 EP1967725 A2 EP 1967725A2 EP 07023520 A EP07023520 A EP 07023520A EP 07023520 A EP07023520 A EP 07023520A EP 1967725 A2 EP1967725 A2 EP 1967725A2
Authority
EP
European Patent Office
Prior art keywords
fuel pump
electric motor
rotation
fuel
blocked
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Withdrawn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
EP07023520A
Other languages
German (de)
English (en)
Other versions
EP1967725A3 (fr
Inventor
Arno Wunderlich
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1967725A2 publication Critical patent/EP1967725A2/fr
Publication of EP1967725A3 publication Critical patent/EP1967725A3/fr
Withdrawn legal-status Critical Current

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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
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3082—Control of electrical fuel pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
    • F02D2041/2072—Bridge circuits, i.e. the load being placed in the diagonal of a bridge to be controlled in both directions

Definitions

  • the invention relates to a method for operating a fuel pump.
  • a fuel pump of a motor vehicle which serves to deliver fuel toward an internal combustion engine of the motor vehicle, has an electric motor to drive the fuel pump.
  • a fuel pump is driven in such a way by the electric motor of the same that, to promote fuel in the direction of the internal combustion engine, the energized electric motor drives the fuel pump in a defined direction of rotation.
  • Impurities in the fuel to be delivered by the fuel pump in the direction of the internal combustion engine can lead to a blockage of the fuel pump, in which case no more fuel is conveyed in the direction of the internal combustion engine and as a result the motor vehicle remains lying. So far, it is not possible to eliminate such a blockage of a fuel pump, so that a blocked fuel pump workshop has to be replaced. This is complicated and expensive.
  • the present invention based on the problem to provide a novel method for operating a fuel pump.
  • This problem is solved by a method according to claim 1.
  • the direction of rotation of the fuel pump is changed at least once for a certain period of time.
  • the method according to the invention for operating a fuel pump it is possible for the first time to remove or eliminate the blockage of a fuel pump. Accordingly, if there is a blocked fuel pump, the direction of rotation of the fuel pump is changed at least once for a certain period of time, whereby the blocking of the fuel pump can be eliminated in most cases. Just if, with the method according to the invention, the blocking of a fuel pump can not be eliminated, the same must be exchanged on the workshop side. This can save costs.
  • the direction of rotation of the fuel pump is immediately changed several times in succession for a certain period of time to eliminate by loosening the blocking of the fuel pump.
  • the present invention relates to a method for operating a fuel pump of a motor vehicle.
  • a fuel pump is driven by an electric motor, namely such that the fuel pump for conveying fuel in the direction of an internal combustion engine, when the electric motor is energized, is driven in a defined direction of rotation.
  • a blockage of the fuel pump may occur. Therefore, during operation of the fuel pump according to the block 10 of the signal flow diagram of Fig. 1 , continuously checks whether there is a blockage of the fuel pump. If it is ascertained that there is no blockage of the fuel pump, it is branched back to block 10 in the sense of a loop. If, on the other hand, it is determined that there is a blockage of the fuel pump, the system branches to block 11.
  • block 11 To eliminate or eliminate such a blockage of the fuel pump is proposed according to block 11 according to the invention, that when it is detected that the fuel pump is blocked, the direction of rotation of the fuel pump is changed at least once for a certain period of time. Preferably, if it is detected that the fuel pump is blocked, the direction of rotation of the fuel pump is changed several times in succession for a certain period of time, so as to eliminate by loosening the blocking of the fuel pump. Subsequently, according to block 12, it is checked whether the blockage could be eliminated by the measure according to block 11.
  • block 12 If it is determined in block 12 that the blockage has been eliminated, the system branches back to block 10 and the fuel pump can then be operated again in the defined direction of rotation in order to supply fuel to the internal combustion engine. If, on the other hand, it is determined in block 12 that the blocking has not been eliminated, then branching is made to block 13. In block 13, a message is then generated that the fuel pump must be replaced.
  • a measured value of a pressure sensor which is integrated into the fuel system, evaluated. If the pressure sensor does not produce pressure build-up in the fuel system despite the DC electric motor being energized, it is concluded that a blocked fuel pump is being used.
  • the direction of rotation of the fuel pump is changed either via a relay cooperating with the DC electric motor or via a changed energization of an H-bridge into which the DC electric motor is connected ,
  • the direction of rotation of the fuel pump can be changed several times in succession.
  • the fuel pump is driven by an EC electric motor. Then, when the fuel pump is driven by an EC electric motor, in accordance with the DC electric motor in blocks 10 and 12, a blocked fuel pump can be closed in such a way that, despite the energized EC electric motor, there is no pressure buildup in the fuel system.
  • a Hall sensor integrated, so can be closed in block 10 and 12 by evaluating the measurement signal of the position sensor to a blocked fuel pump.
  • the inventive method can be used in fuel pumps for diesel fuels, gasoline fuels or any other fuels.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
EP07023520A 2007-03-09 2007-12-05 Procédé destiné au fonctionnement d'une pompe à carburant Withdrawn EP1967725A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007011456A DE102007011456A1 (de) 2007-03-09 2007-03-09 Verfahren zum Betreiben einer Kraftstoffpumpe

Publications (2)

Publication Number Publication Date
EP1967725A2 true EP1967725A2 (fr) 2008-09-10
EP1967725A3 EP1967725A3 (fr) 2012-03-21

Family

ID=39402542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07023520A Withdrawn EP1967725A3 (fr) 2007-03-09 2007-12-05 Procédé destiné au fonctionnement d'une pompe à carburant

Country Status (4)

Country Link
US (1) US20080216799A1 (fr)
EP (1) EP1967725A3 (fr)
JP (1) JP2008223762A (fr)
DE (1) DE102007011456A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012011251A1 (de) 2012-06-06 2013-12-12 Man Truck & Bus Ag Vorrichtung mit einem elektromechanischen Relais in einem elektrischen Lastkreis und einem elektrischen Lastkreis und einem elektrischen Steuerkreis
CN107002606B (zh) * 2014-12-22 2019-08-27 大陆汽车有限公司 用于运送并加热介质的传送设备
US20240077044A1 (en) * 2022-09-07 2024-03-07 Woodward, Inc. Methods and systems for motor-driven metering pump

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296718A (en) * 1979-09-17 1981-10-27 General Motors Corporation Diesel engine shutdown control system
DE3304335A1 (de) * 1983-02-09 1984-08-09 Robert Bosch Gmbh, 7000 Stuttgart Steuereinrichtung zum stillsetzen einer brennkraftmaschine
DE3422829A1 (de) * 1984-06-20 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Schaltungsanordnung zur ansteuerung von elektrischen kraftstoffpumpen
JPH0221591Y2 (fr) * 1984-10-30 1990-06-11
JPH04284155A (ja) * 1991-03-12 1992-10-08 Aisan Ind Co Ltd 電動式燃料ポンプの制御装置
JP2003301753A (ja) * 2002-04-08 2003-10-24 Futaba Corp 模型用電動燃料ポンプ
US7036359B2 (en) * 2003-07-31 2006-05-02 Aisan Kogyo Kabushiki Kaisha Failure diagnostic system for fuel vapor processing apparatus
JP4261412B2 (ja) * 2004-04-16 2009-04-30 株式会社日立製作所 内燃機関の燃料供給装置
JP2006029274A (ja) * 2004-07-20 2006-02-02 Toyota Motor Corp 内燃機関の燃料分留装置

Also Published As

Publication number Publication date
JP2008223762A (ja) 2008-09-25
EP1967725A3 (fr) 2012-03-21
US20080216799A1 (en) 2008-09-11
DE102007011456A1 (de) 2008-09-11

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