EP1882095B1 - Conveying device comprising a fuel pump - Google Patents

Conveying device comprising a fuel pump Download PDF

Info

Publication number
EP1882095B1
EP1882095B1 EP06755239.8A EP06755239A EP1882095B1 EP 1882095 B1 EP1882095 B1 EP 1882095B1 EP 06755239 A EP06755239 A EP 06755239A EP 1882095 B1 EP1882095 B1 EP 1882095B1
Authority
EP
European Patent Office
Prior art keywords
fuel pump
fuel
control unit
power consumption
internal combustion
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.)
Ceased
Application number
EP06755239.8A
Other languages
German (de)
French (fr)
Other versions
EP1882095A1 (en
Inventor
Bernd Rumpf
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.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP1882095A1 publication Critical patent/EP1882095A1/en
Application granted granted Critical
Publication of EP1882095B1 publication Critical patent/EP1882095B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • 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
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
    • 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
    • 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

Definitions

  • the invention relates to a conveyor with a fuel pump for supplying an internal combustion engine of a motor vehicle with fuel and with a device for supplying the fuel pump with electric current.
  • Such conveyors are often used in today's vehicles and are therefore known.
  • Today's fuel pumps see zBdie EP 0,735,260 A2
  • demand will be regulated according to the demand for fuel of the internal combustion engine.
  • the means for supplying the fuel pump with electric current provides a designated current and a voltage provided, optionally in an appropriate timing to the fuel pump.
  • fuel pumps are subject to natural wear over their lifetime and can also become dirty. This reduces the efficiency of the fuel pump, which results in an increase in the electrical power consumption at the same hydraulic power output of the fuel pump.
  • a particularly powerful fuel pump is used.
  • a power dip of the internal combustion engine is avoided after wear or contamination of the fuel pump.
  • the use of the particularly powerful fuel pump has the disadvantage that the conveyor thereby has very large dimensions and is expensive and thereby increases the power consumption.
  • the invention is based on the problem, a conveyor of the type mentioned in such a way that the use of a particularly powerful fuel pump can be avoided.
  • the conveyor according to the invention does not require a particularly powerful fuel pump.
  • Another advantage of the conveyor according to the invention is that, for example, in a power dip of the internal combustion engine, the error can be limited in a particularly simple manner. Thanks to the monitoring device can be determined whether the cause of the power dip can be, for example, in the pollution and / or wear of the fuel pump.
  • the conveyor according to the invention is structurally particularly simple if the monitoring device is arranged in a control unit supplying the fuel pump with electric current. In addition, the conveyor according to the invention thereby has a particularly small number of components.
  • the comparison between the power consumption and the delivered Hydraulic power easily determine when the controller is connected to a fuel-determining engine control unit of the internal combustion engine. Since the engine control unit in any case determines the fuel consumption of the internal combustion engine, it can transmit this demand to the control unit supplying the fuel pump with electric current. The controller then supplies the fuel pump with sufficient current and voltage until the demand demanded by the engine control unit is met.
  • the comparison of the currently supplied current or voltage with corresponding values of the new condition of the fuel pump is a measure of the actual wear of the fuel pump.
  • the current wear or contamination of the fuel pump can be determined according to another advantageous embodiment of the invention in each operating state of the fuel pump when the controller has a memory for a fuel pump characteristic of the power consumption of the fuel pump in response to the need to promote fuel to the internal combustion engine ,
  • the determination of the current wear of the fuel pump requires according to another advantageous embodiment of the invention, a particularly low construction costs, if the control unit is designed to determine the deviation of the required for the required fuel demand power consumption of the fuel pump from the stored fuel pump characteristic.
  • This design allows the detection of wear or contamination of the fuel pump before the need for fuel of the engine at full load by the fuel pump can no longer be met.
  • the determined deviation of the current power consumption with the stored fuel pump characteristic is preferably stored and can be read out as part of an engine test.
  • the assembly of the conveyor according to the invention is particularly simple when the control unit is disposed within the conveyor, preferably in a flange to be inserted into the fuel tank.
  • FIG. 1 schematically shows a conveyor 1 for supplying an internal combustion engine 2 of a motor vehicle with fuel from a fuel tank 3.
  • the conveyor 1 has a arranged in a swirl pot 4 fuel pump 5.
  • the swirl pot 4 is biased against the bottom of the fuel tank 3.
  • the fuel pump 5 delivers the fuel from the swirl pot 4 via a flow line 6 to the internal combustion engine 2.
  • An engine control unit 7 determines depending on the operating condition of the motor vehicle, the need of the internal combustion engine 2 to fuel and with a fuel pump 5 with electric Power supplying control unit 8 connected.
  • the control unit 8 has a memory 9 for a fuel pump characteristic.
  • the fuel pump characteristic indicates what power consumption the fuel pump 5 has in the amount of fuel to be delivered.
  • the control unit 8 determines the required voltage or the required current for the fuel pump 5 from the fuel pump characteristic. Furthermore, the control unit 8 has a monitoring device 10, with which is compared the power consumption of the fuel pump 5 is sufficient to promote the required amount of fuel.
  • the control unit 8 is also connected to a diagnostic display 11, which has, for example, a control lamp on a dashboard of the motor vehicle, and to a diagnostic socket 12.
  • the diagnostic socket 12 can be used to read out the values of the monitoring device 10 and the state of wear or fouling state of the fuel pump 5 with a corresponding diagnostic device, not shown.
  • control unit 8 may be arranged in a flange 13 to be inserted into the fuel tank 3.
  • FIG. 2 shows a flowchart for driving and monitoring of the fuel pump 5 from FIG. 1 .
  • the engine control unit 7 determines the fuel demand of the internal combustion engine 2 and transmits the fuel demand to the control unit 8.
  • the control unit 8 determines the power consumption of the fuel pump 5 in a step S2 based on a stored or learned fuel pump characteristic and the fuel demand and supplies the Fuel pump 5 according to the intended power consumption with electrical current, the electrical voltage or current pulses.
  • a step S3 it is detected whether the demand of the internal combustion engine 2 is covered by fuel. If so, the controller 8 waits for a change in the request of the engine control unit 7.
  • the supply of the fuel pump 5 is increased with electric current in a step S4.
  • the deviation of the power consumption of the fuel pump 5 from the fuel pump characteristic is determined by the monitoring device 10 in a step S5.
  • the determined deviation is a measure of the wear or the contamination of the fuel pump 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Description

Die Erfindung betrifft eine Fördereinrichtung mit einer Kraftstoffpumpe zur Versorgung einer Brennkraftmaschine eines Kraftfahrzeuges mit Kraftstoff und mit einer Einrichtung zur Versorgung der Kraftstoffpumpe mit elektrischem Strom.The invention relates to a conveyor with a fuel pump for supplying an internal combustion engine of a motor vehicle with fuel and with a device for supplying the fuel pump with electric current.

Solche Fördereinrichtungen werden in heutigen Kraftfahrzeugen häufig ingesetzt und sind daher bekannt. Heutige Kraftstoffpumpen, siehe z.B.die EP 0.735.260 A2 , werden künftig bedarfsabhängig nach dem Bedarf an Kraftstoff der Brennkraftmaschine geregelt. Die Einrichtung zur Versorgung der Kraftstoffpumpe mit elektrischem Strom liefert einen vorgesehenen Strom und eine vorgesehene Spannung gegebenenfalls in einer vorgesehenen Taktung zu der Kraftstoffpumpe. Jedoch unterliegen Kraftstoffpumpen einem natürlichen Verschleiß über die Lebensdauer und können zudem verschmutzen. Hierdurch sinkt der Wirkungsgrad der Kraftstoffpumpe, was sich in einer Erhöhung der elektrischen Leistungsaufnahme bei gleicher hydraulischer Leistungsabgabe der Kraftstoffpumpe auswirkt.Such conveyors are often used in today's vehicles and are therefore known. Today's fuel pumps, see zBdie EP 0,735,260 A2 In the future, demand will be regulated according to the demand for fuel of the internal combustion engine. The means for supplying the fuel pump with electric current provides a designated current and a voltage provided, optionally in an appropriate timing to the fuel pump. However, fuel pumps are subject to natural wear over their lifetime and can also become dirty. This reduces the efficiency of the fuel pump, which results in an increase in the electrical power consumption at the same hydraulic power output of the fuel pump.

Um eine Verminderung der hydraulischen Leistungsabgabe bei gleicher elektrischer Leistungsaufnahme der Kraftstoffpumpe auszugleichen, wird meist eine besonders leistungsstarke Kraftstoffpumpe eingesetzt. Hierdurch wird ein Leistungseinbruch der Brennkraftmaschine nach einem Verschleiß oder einer Verschmutzung der Kraftstoffpumpe vermieden. Der Einsatz der besonders leistungsstarken Kraftstoffpumpe hat jedoch den Nachteil, dass die Fördereinrichtung hierdurch sehr große Abmessungen aufweist und kostenintensiv ist und hierdurch die Stromaufnahme ansteigt.To compensate for a reduction of the hydraulic power output with the same electrical power consumption of the fuel pump, usually a particularly powerful fuel pump is used. As a result, a power dip of the internal combustion engine is avoided after wear or contamination of the fuel pump. However, the use of the particularly powerful fuel pump has the disadvantage that the conveyor thereby has very large dimensions and is expensive and thereby increases the power consumption.

Der Erfindung liegt das Problem zugrunde, eine Fördereinrichtung der eingangs genannten Art so weiterzubilden, dass sich der Einsatz einer besonders leistungsstarken Kraftstoffpumpe vermeiden lässt.The invention is based on the problem, a conveyor of the type mentioned in such a way that the use of a particularly powerful fuel pump can be avoided.

Dieses Problem wird erfindungsgemäß gelöst durch eine Überwachungseinrichtung zur Überwachung der Leistungsaufnahme der Kraftstoffpumpe bei vorgesehener hydraulischer Leistungsabgabe.This problem is inventively solved by a monitoring device for monitoring the power consumption of the fuel pump at the proposed hydraulic power output.

Durch diese Gestaltung lässt sich eine nachlassende hydraulische Leistung bei vorgesehener Leistungsaufnahme der Kraftstoffpumpe über die Lebensdauer oder bei einer Verschmutzung erfassen. Die Überwachung der Leistungsaufnahme der Kraftstoffpumpe stellt damit sicher, dass die durch Verschleiß oder Verschmutzung verminderte hydraulische Leistungsabgabe einfach erfasst wird. Dank der Erfindung lässt sich daher eine für die vorgesehene hydraulische Leistungsabgabe erforderliche Kraftstoffpumpe einsetzen und bei Verschleiß oder Verschmutzung reinigen oder auswechseln. Daher benötigt die erfindungsgemäße Fördereinrichtung keine besonders leistungsstarke Kraftstoffpumpe. Ein weiterer Vorteil der erfindungsgemäßen Fördereinrichtung besteht darin, dass beispielsweise bei einem Leistungseinbruch der Brennkraftmaschine der Fehler auf besonders einfache Weise eingegrenzt werden kann. Dank der Überwachungseinrichtung kann festgestellt werden, ob die Ursache des Leistungseinbruchs beispielsweise in der Verschmutzung und/oder dem Verschleiß der Kraftstoffpumpe liegen kann.By this design, a declining hydraulic power at the intended power consumption of the fuel pump over the life or in case of contamination can be detected. Monitoring the power consumption of the fuel pump thus ensures that the reduced hydraulic power output due to wear or contamination is easily detected. Thanks to the invention can therefore be used for the intended hydraulic power output required fuel pump and clean or replace if worn or dirty. Therefore, the conveyor according to the invention does not require a particularly powerful fuel pump. Another advantage of the conveyor according to the invention is that, for example, in a power dip of the internal combustion engine, the error can be limited in a particularly simple manner. Thanks to the monitoring device can be determined whether the cause of the power dip can be, for example, in the pollution and / or wear of the fuel pump.

Die erfindungsgemäße Fördereinrichtung gestaltet sich konstruktiv besonders einfach, wenn die Überwachungseinrichtung in einem die Kraftstoffpumpe mit elektrischem Strom versorgenden Steuergerät angeordnet ist. Zudem weist die erfindungsgemäße Fördereinrichtung hierdurch eine besonders geringe Anzahl an Bauteilen auf.The conveyor according to the invention is structurally particularly simple if the monitoring device is arranged in a control unit supplying the fuel pump with electric current. In addition, the conveyor according to the invention thereby has a particularly small number of components.

Bei bedarfsgeregelten Kraftstoffpumpen lässt sich der Vergleich zwischen der Leistungsaufnahme und der abgegebenen hydraulischen Leistung gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach ermitteln, wenn das Steuergerät mit einem den Bedarf an Kraftstoff ermittelnden Motorsteuergerät der Brennkraftmaschine verbunden ist. Da das Motorsteuergerät ohnehin den Bedarf der Brennkraftmaschine an Kraftstoff ermittelt, kann es diesen Bedarf an das die Kraftstoffpumpe mit elektrischem Strom versorgende Steuergerät übermitteln. Das Steuergerät versorgt anschließend die Kraftstoffpumpe mit ausreichend Strom und Spannung, bis der von dem Motorsteuergerät geforderte Bedarf gedeckt ist. Der Vergleich des aktuell gelieferten Stroms oder der Spannung mit entsprechenden Werten von dem Neuzustand der Kraftstoffpumpe ist ein Maß für den aktuellen Verschleiß der Kraftstoffpumpe.For demand-controlled fuel pumps, the comparison between the power consumption and the delivered Hydraulic power according to another advantageous embodiment of the invention easily determine when the controller is connected to a fuel-determining engine control unit of the internal combustion engine. Since the engine control unit in any case determines the fuel consumption of the internal combustion engine, it can transmit this demand to the control unit supplying the fuel pump with electric current. The controller then supplies the fuel pump with sufficient current and voltage until the demand demanded by the engine control unit is met. The comparison of the currently supplied current or voltage with corresponding values of the new condition of the fuel pump is a measure of the actual wear of the fuel pump.

Der aktuelle Verschleiß oder die Verschmutzung der Kraftstoffpumpe lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung in jedem Betriebszustand der Kraftstoffpumpe ermitteln, wenn das Steuergerät einen Speicher für eine Kraftstoffpumpen-Kennlinie der Leistungsaufnahme der Kraftstoffpumpe in Abhängigkeit von dem zu fördernden Bedarf an Kraftstoff der Brennkraftmaschine aufweist.The current wear or contamination of the fuel pump can be determined according to another advantageous embodiment of the invention in each operating state of the fuel pump when the controller has a memory for a fuel pump characteristic of the power consumption of the fuel pump in response to the need to promote fuel to the internal combustion engine ,

Die Ermittlung des aktuellen Verschleißes der Kraftstoffpumpe erfordert gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einen besonders geringen baulichen Aufwand, wenn das Steuergerät zur Ermittlung der Abweichung der für den zu fördernden Bedarf an Kraftstoff erforderlichen Leistungsaufnahme der Kraftstoffpumpe von der abgespeicherten Kraftstoffpumpen-Kennlinie ausgebildet ist. Diese Gestaltung ermöglicht die Erfassung des Verschleißes oder der Verschmutzung der Kraftstoffpumpe bereits bevor der Bedarf an Kraftstoff der Brennkraftmaschine bei Volllast durch die Kraftstoffpumpe nicht mehr gedeckt werden kann. Die ermittelte Abweichung der aktuellen Leistungsaufnahme mit der abgespeicherten Kraftstoffpumpen-Kennlinie wird vorzugsweise abgespeichert und kann im Rahmen eines Motortestes ausgelesen werden.The determination of the current wear of the fuel pump requires according to another advantageous embodiment of the invention, a particularly low construction costs, if the control unit is designed to determine the deviation of the required for the required fuel demand power consumption of the fuel pump from the stored fuel pump characteristic. This design allows the detection of wear or contamination of the fuel pump before the need for fuel of the engine at full load by the fuel pump can no longer be met. The determined deviation of the current power consumption with the stored fuel pump characteristic is preferably stored and can be read out as part of an engine test.

Eine sofortige Meldung des Erreichens der Verschleißgrenze oder des zulässigen Verschmutzungsgrades der Kraftstoffpumpe lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung einfach erzeugen, wenn das Steuergerät zur Übermittlung der Abweichung der Leistungsaufnahme mit der abgespeicherten Kraftstoffpumpen-Kennlinie mit einer Diagnoseanzeige und/oder einer Diagnosebuchse verbunden ist.An immediate message of reaching the wear limit or the permissible degree of contamination of the fuel pump can be easily generated according to another advantageous embodiment of the invention, when the control unit for communicating the deviation of the power consumption with the stored fuel pump characteristic is connected to a diagnostic indicator and / or a diagnostic socket ,

Die Montage der erfindungsgemäßen Fördereinrichtung gestaltet sich besonders einfach, wenn das Steuergerät innerhalb der Fördereinrichtung, vorzugsweise in einem in den Kraftstoffbehälter einzusetzenden Flansch angeordnet ist.The assembly of the conveyor according to the invention is particularly simple when the control unit is disposed within the conveyor, preferably in a flange to be inserted into the fuel tank.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt in

Fig. 1
schematisch eine erfindungsgemäße Fördereinrichtung zur Versorgung einer Brennkraftmaschine eines Kraftfahrzeuges mit Kraftstoff,
Fig. 2
ein Flussdiagramm zur Überwachung einer Leistungsaufnahme einer Kraftstoffpumpe der erfindungsgemäßen Fördereinrichtung aus Figur 1.
The invention allows numerous embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. This shows in
Fig. 1
FIG. 2 schematically shows a conveying device according to the invention for supplying an internal combustion engine of a motor vehicle with fuel, FIG.
Fig. 2
a flowchart for monitoring a power consumption of a fuel pump of the conveyor according to the invention from FIG. 1 ,

Figur 1 zeigt schematisch eine Fördereinrichtung 1 zur Versorgung einer Brennkraftmaschine 2 eines Kraftfahrzeuges mit Kraftstoff aus einem Kraftstoffbehälter 3. Die Fördereinrichtung 1 hat eine in einem Schwalltopf 4 angeordnete Kraftstoffpumpe 5. Der Schwalltopf 4 ist gegen den Boden des Kraftstoffbehälters 3 vorgespannt. Die Kraftstoffpumpe 5 fördert den Kraftstoff aus dem Schwalltopf 4 über eine Vorlaufleitung 6 zu der Brennkraftmaschine 2. Ein Motorsteuergerät 7 ermittelt in Abhängigkeit von dem Betriebszustand des Kraftfahrzeuges den Bedarf der Brennkraftmaschine 2 an Kraftstoff und ist mit einem die Kraftstoffpumpe 5 mit elektrischem Strom versorgenden Steuergerät 8 verbunden. Das Steuergerät 8 weist einen Speicher 9 für eine Kraftstoffpumpen-Kennlinie auf. Die Kraftstoffpumpen-Kennlinie gibt an, welche Leistungsaufnahme die Kraftstoffpumpe 5 bei der zu fördernden Menge an Kraftstoff hat. Da die zu fördernde Menge an Kraftstoff dem Kraftstoffbedarf der Brennkraftmaschine 2 entspricht, ermittelt das Steuergerät 8 aus der Kraftstoffpumpen-Kennlinie die erforderliche Spannung oder den erforderlichen Strom für die Kraftstoffpumpe 5. Weiterhin hat das Steuergerät 8 eine Überwachungseinrichtung 10, mit der verglichen wird, ob die Leistungsaufnahme der Kraftstoffpumpe 5 zur Förderung der erforderlichen Menge an Kraftstoff ausreicht. Das Steuergerät 8 ist zudem mit einer Diagnoseanzeige 11, welches beispielsweise eine Kontrolllampe auf einem Armaturenbrett des Kraftfahrzeuges hat, und mit einer Diagnosebuchse 12 verbunden. Über die Diagnosebuchse 12 lassen sich mit einem entsprechenden, nicht dargestellten Diagnosegerät die Werte der Überwachungseinrichtung 10 und der Verschleißzustand oder Verschmutzungszustand der Kraftstoffpumpe 5 auslesen. FIG. 1 schematically shows a conveyor 1 for supplying an internal combustion engine 2 of a motor vehicle with fuel from a fuel tank 3. The conveyor 1 has a arranged in a swirl pot 4 fuel pump 5. The swirl pot 4 is biased against the bottom of the fuel tank 3. The fuel pump 5 delivers the fuel from the swirl pot 4 via a flow line 6 to the internal combustion engine 2. An engine control unit 7 determines depending on the operating condition of the motor vehicle, the need of the internal combustion engine 2 to fuel and with a fuel pump 5 with electric Power supplying control unit 8 connected. The control unit 8 has a memory 9 for a fuel pump characteristic. The fuel pump characteristic indicates what power consumption the fuel pump 5 has in the amount of fuel to be delivered. Since the amount of fuel to be delivered corresponds to the fuel demand of the internal combustion engine 2, the control unit 8 determines the required voltage or the required current for the fuel pump 5 from the fuel pump characteristic. Furthermore, the control unit 8 has a monitoring device 10, with which is compared the power consumption of the fuel pump 5 is sufficient to promote the required amount of fuel. The control unit 8 is also connected to a diagnostic display 11, which has, for example, a control lamp on a dashboard of the motor vehicle, and to a diagnostic socket 12. The diagnostic socket 12 can be used to read out the values of the monitoring device 10 and the state of wear or fouling state of the fuel pump 5 with a corresponding diagnostic device, not shown.

In einer alternativen, nicht dargestellten Ausführungsform kann das Steuergerät 8 in einem in den Kraftstoffbehälter 3 einzusetzenden Flansch 13 angeordnet sein.In an alternative embodiment, not shown, the control unit 8 may be arranged in a flange 13 to be inserted into the fuel tank 3.

Figur 2 zeigt ein Flussdiagramm zur Ansteuerung und Überwachung der Kraftstoffpumpe 5 aus Figur 1. In einem ersten Schritt S1 ermittelt das Motorsteuergerät 7 den Kraftstoffbedarf der Brennkraftmaschine 2 und übermittelt den Kraftstoffbedarf an das Steuergerät 8. Das Steuergerät 8 ermittelt in einem Schritt S2 anhand einer abgespeicherten oder gelernten Kraftstoffpumpen-Kennlinie und dem Kraftstoffbedarf die Leistungsaufnahme der Kraftstoffpumpe 5 und versorgt die Kraftstoffpumpe 5 entsprechend der vorgesehenen Leistungsaufnahme mit elektrischem Strom, der elektrischen Spannung oder Stromimpulsen. In einem Schritt S3 wird erfasst, ob der Bedarf der Brennkraftmaschine 2 an Kraftstoff gedeckt ist. Ist dies der Fall, wartet das Steuergerät 8 auf eine Änderung der Anforderung des Motorsteuergerätes 7. Sofern der Bedarf der Brennkraftmaschine 2 an Kraftstoff nicht gedeckt ist, wird die Versorgung der Kraftstoffpumpe 5 mit elektrischem Strom in einem Schritt S4 erhöht. Gleichzeitig wird von der Überwachungseinrichtung 10 in einem Schritt S5 die Abweichung der Leistungsaufnahme der Kraftstoffpumpe 5 von der Kraftstoffpumpen-Kennlinie ermittelt. Die ermittelte Abweichung ist ein Maß für den Verschleiß oder die Verschmutzung der Kraftstoffpumpe 5. In einem Schritt S6 wird verglichen, ob die Abweichung einen vorgesehenen Schwellwert überschreitet. Wenn dies der Fall ist, wird die Diagnoseanzeige 11 aktiviert und eine Meldung abgespeichert, welche über die Diagnosebuchse 12 ausgelesen werden kann. Wird der vorgesehene Schwellwert nicht überschritten, wartet das Steuergerät 8 wieder auf eine Änderung der Anforderung des Motorsteuergerätes 7 FIG. 2 shows a flowchart for driving and monitoring of the fuel pump 5 from FIG. 1 , In a first step S1, the engine control unit 7 determines the fuel demand of the internal combustion engine 2 and transmits the fuel demand to the control unit 8. The control unit 8 determines the power consumption of the fuel pump 5 in a step S2 based on a stored or learned fuel pump characteristic and the fuel demand and supplies the Fuel pump 5 according to the intended power consumption with electrical current, the electrical voltage or current pulses. In a step S3, it is detected whether the demand of the internal combustion engine 2 is covered by fuel. If so, the controller 8 waits for a change in the request of the engine control unit 7. If the demand of the internal combustion engine 2 is not covered in fuel, the supply of the fuel pump 5 is increased with electric current in a step S4. At the same time, the deviation of the power consumption of the fuel pump 5 from the fuel pump characteristic is determined by the monitoring device 10 in a step S5. The determined deviation is a measure of the wear or the contamination of the fuel pump 5. In a step S6, it is compared whether the deviation exceeds a prescribed threshold value. If this is the case, the diagnostic display 11 is activated and a message is stored, which can be read via the diagnostic socket 12. If the intended threshold value is not exceeded, the control unit 8 again waits for a change in the request of the engine control unit 7

Claims (3)

  1. Delivery device (1) having a fuel pump (5) for supplying an internal combustion engine (2) of a motor vehicle with fuel, having a device for supplying the fuel pump (5) with electric current, and having a monitoring device (10) for monitoring the power consumption of the fuel pump (5) for a specified hydraulic power output, wherein the monitoring device (10) is arranged in a control unit (8) which supplies the fuel pump (5) with electric current, characterized in that the control unit (8) has a memory (9) for a fuel pump characteristic curve of the power consumption of the fuel pump (5) as a function of the quantity of fuel which is required by the internal combustion engine (2) and is to be delivered, in that the control unit (8) is designed to determine the deviation of the power consumption of the fuel pump (5) necessary for the required quantity of fuel to be delivered from the stored fuel pump characteristic curve, and in that, in order to transfer the deviation of the power consumption with the stored fuel pump characteristic curve, the control unit (8) is connected to a diagnostic display (11) and/or a diagnostic socket (12).
  2. Delivery device according to Claim 1, characterized in that the control unit (8) is connected to an engine control unit (7) of the internal combustion engine (2) which determines the required quantity of fuel.
  3. Delivery device according to Claim 1 or 2, characterized in that the control unit (8) is arranged inside the delivery device (1), preferably in a flange (13) which is to be inserted into the fuel container (3).
EP06755239.8A 2005-05-19 2006-05-18 Conveying device comprising a fuel pump Ceased EP1882095B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005023189A DE102005023189A1 (en) 2005-05-19 2005-05-19 Conveyor with a fuel pump
PCT/EP2006/062404 WO2006122963A1 (en) 2005-05-19 2006-05-18 Conveying device comprising a fuel pump

Publications (2)

Publication Number Publication Date
EP1882095A1 EP1882095A1 (en) 2008-01-30
EP1882095B1 true EP1882095B1 (en) 2013-07-17

Family

ID=36707342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06755239.8A Ceased EP1882095B1 (en) 2005-05-19 2006-05-18 Conveying device comprising a fuel pump

Country Status (6)

Country Link
US (1) US7784446B2 (en)
EP (1) EP1882095B1 (en)
JP (1) JP5108753B2 (en)
KR (1) KR20080011436A (en)
DE (1) DE102005023189A1 (en)
WO (1) WO2006122963A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007912A1 (en) * 2007-02-14 2008-08-21 Siemens Ag delivery unit
US7980120B2 (en) * 2008-12-12 2011-07-19 GM Global Technology Operations LLC Fuel injector diagnostic system and method for direct injection engine
US7950371B2 (en) * 2009-04-15 2011-05-31 GM Global Technology Operations LLC Fuel pump control system and method
JP5054795B2 (en) * 2010-03-23 2012-10-24 日立オートモティブシステムズ株式会社 Fuel supply control device for internal combustion engine
TW201344442A (en) * 2012-04-25 2013-11-01 Hon Hai Prec Ind Co Ltd Vehicle control system
US9528519B2 (en) * 2012-10-12 2016-12-27 Continental Automotive Systems, Inc. Pressure control by phase current and initial adjustment at car line
US20140130778A1 (en) * 2014-01-21 2014-05-15 Caterpillar Inc. Method of operating engine
DE102016203652A1 (en) * 2016-03-07 2017-09-07 Robert Bosch Gmbh Method for operating an electric fuel pump
US10253718B2 (en) * 2016-11-23 2019-04-09 GM Global Technology Operations LLC Method and apparatus for controlling fuel pressure

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756291A (en) * 1987-04-27 1988-07-12 Ford Motor Company Pressure control for the fuel system of an internal combustion engine
DE3840912C2 (en) 1987-12-18 2000-04-06 Volkswagen Ag Fuel supply for a motor vehicle internal combustion engine with a safety device in the event of a crash
US5291578A (en) * 1992-06-15 1994-03-01 First Switch, Inc. Apparatus for controlling a vehicle fuel pump
US5499538A (en) * 1994-03-03 1996-03-19 Ford Motor Company On-board detection of fuel pump malfunction
US5505180A (en) 1995-03-31 1996-04-09 Ford Motor Company Returnless fuel delivery mechanism with adaptive learning
US5715797A (en) * 1995-06-28 1998-02-10 Nippondenso Co., Ltd. Fuel supply system for internal combustion engine and method of adjusting it
DE19617496C2 (en) 1996-05-02 2002-06-20 Siemens Ag Fuel Feed System
JPH11315768A (en) * 1998-04-30 1999-11-16 Mitsubishi Electric Corp Fuel supply system of internal combustion engine
FR2781012B1 (en) * 1998-07-13 2001-02-16 Magneti Marelli France OBJECTIVE PRESSURE DRIVEN ELECTRIC PUMP FUEL SUPPLY CIRCUIT FOR INTERNAL COMBUSTION ENGINE
US6213100B1 (en) 1999-04-28 2001-04-10 Walbro Corporation Multi-function fuel pump module
DE19948514A1 (en) 1999-10-08 2001-04-19 Alfmeier Praez Ag Fuel removal device for fuel tank of car has flange forming component carrying valve and its adjusting drive, valve and its adjusting drive being on flange under side
DE10002613A1 (en) 2000-01-22 2001-07-26 Volkswagen Ag Fuel supply for a motor vehicle internal combustion engine
US6609501B2 (en) * 2001-04-12 2003-08-26 Walbro Corporation Fuel pressure regulation system
DE10153396A1 (en) * 2001-11-01 2003-05-28 Siemens Ag Device for controlling an electric fuel pump
DE10162989C1 (en) * 2001-12-20 2003-10-09 Siemens Ag Circuit for regulating injection system fuel pump, derives adaptive component of desired delivery volume from integral component if integral component above threshold for defined time
JP3833540B2 (en) * 2002-01-09 2006-10-11 三菱電機株式会社 Fuel supply device for internal combustion engine
JP2004190508A (en) * 2002-12-09 2004-07-08 Hitachi Unisia Automotive Ltd Diagnostic system of fuel pump for internal combustion engine
US6935317B2 (en) * 2003-01-31 2005-08-30 Siemens Vdo Automotive Corporation Fuel supply and diagnostics module
JP2005155602A (en) * 2003-11-07 2005-06-16 Denso Corp Fuel supply device

Also Published As

Publication number Publication date
US7784446B2 (en) 2010-08-31
KR20080011436A (en) 2008-02-04
JP2008540926A (en) 2008-11-20
US20080276909A1 (en) 2008-11-13
DE102005023189A1 (en) 2006-11-23
EP1882095A1 (en) 2008-01-30
WO2006122963A1 (en) 2006-11-23
JP5108753B2 (en) 2012-12-26

Similar Documents

Publication Publication Date Title
EP1882095B1 (en) Conveying device comprising a fuel pump
DE102011086291A1 (en) Control method of a hybrid ship propulsion and hybrid propulsion system
DE112010002707T5 (en) BATTERY CHARGE / DISCHARGE CONTROL DEVICE
EP3298260B1 (en) Injection system for an internal combustion engine and internal combustion engine having such an injection system
EP3008325B1 (en) Fuel supply system
DE112010005355T5 (en) Control device for an internal combustion engine
DE102013102194A1 (en) Drive device for a moving in a fluid vehicle
EP1419949A1 (en) Compressor arrangement with a supplementary compressor, in particular for heavy-duty vehicles
DE10342178B4 (en) On-board network with several on-board network circuits and method for supplying electrical consumers in a vehicle
DE102017114843A1 (en) Fail-safe device
DE3901498A1 (en) LOAD DETECTING SYSTEM FOR A MOTOR DRIVEN GENERATOR
WO2012055917A1 (en) Hydraulic arrangement
DE102010039102A1 (en) Supply device, internal combustion engine, generator unit, method for supplying an exhaust system of an internal combustion engine with a solution containing reducing agent and control device
DE102015201315B3 (en) Power control device for a consumer in a vehicle
EP3014099A1 (en) Fuel delivery system with partial pressure relief valve on the drive line of a suction jet pump
DE102005055004A1 (en) Method for controlling the electrical system of a motor vehicle
DE102015000330A1 (en) Power system of a vehicle, vehicle equipped therewith and corresponding method
DE102006018736A1 (en) Method for operating combustion engine using multi-fuels, requires injection of specified portions of different first and second fuels
DE102017210503B4 (en) Emergency running method for controlling a fuel pump
DE102011005662A1 (en) Operating method for electric fuel pump of fuel supply system of internal combustion engine of motor vehicle, involves supplying fuel from fuel tank, particularly of internal combustion engine to consumer
DE102009028115A1 (en) Fuel injection system and method for operating a fuel injection system
DE102018202084A1 (en) Electric energy system with fuel cells
DE102015012047A1 (en) Method for starting a fuel cell system
EP1537318B1 (en) Method for operating an internal combustion engine
DE102012017675A1 (en) Method for operating fuel conveying device for internal combustion engine of motor car, involves determining default power of load as a function of temperature of control device and ambient temperature

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20071025

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VDO AUTOMOTIVE AG

17Q First examination report despatched

Effective date: 20080326

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CONTINENTAL AUTOMOTIVE GMBH

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006013038

Country of ref document: DE

Effective date: 20130912

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20131028

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20140422

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006013038

Country of ref document: DE

Effective date: 20140422

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20140518

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140518

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502006013038

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006013038

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20200528

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20210531

Year of fee payment: 16

Ref country code: FR

Payment date: 20210520

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006013038

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006013038

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200518

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221201