EP2507503A1 - Fuel injection device with quantity difference control for an electric pre-supply pump - Google Patents

Fuel injection device with quantity difference control for an electric pre-supply pump

Info

Publication number
EP2507503A1
EP2507503A1 EP10761005A EP10761005A EP2507503A1 EP 2507503 A1 EP2507503 A1 EP 2507503A1 EP 10761005 A EP10761005 A EP 10761005A EP 10761005 A EP10761005 A EP 10761005A EP 2507503 A1 EP2507503 A1 EP 2507503A1
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel
injection device
fuel injection
pump
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.)
Granted
Application number
EP10761005A
Other languages
German (de)
French (fr)
Other versions
EP2507503B1 (en
Inventor
Friedrich Boecking
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
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2507503A1 publication Critical patent/EP2507503A1/en
Application granted granted Critical
Publication of EP2507503B1 publication Critical patent/EP2507503B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • 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
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
    • 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
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/0215—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by draining or closing fuel conduits
    • 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
    • F02M37/041—Arrangements for driving gear-type pumps

Definitions

  • the invention is based on a fuel injection device according to the preamble of claim 1.
  • the prefeed pump is designed as an external gear pump and is driven via the drive shaft of the high-pressure pump, wherein the amount of fuel supplied to the high-pressure pump is regulated via a separate metering unit.
  • a safety valve is provided, which prevents a break in the pipe or the filter in the event of overpressure, and a venting valve for venting the delivery pipe.
  • the delivery rate is controlled via a differential quantity valve which at the same time also assumes the safety function and ventilation function.
  • the differential quantity valve is arranged, for example, in front of a pressure-side fuel filter.
  • the known volume control by means of a metering unit according to the invention can be switched to an example quantity-controlled electric prefeed pump (eg gear pump).
  • Advantage of this solution according to the invention is the same quality as in a regulated electric fuel pump, but safety and ventilation valves are saved, especially since the differential valve has the same expense as a metering unit.
  • the single FIGURE shows an embodiment of the fuel injection device according to the invention.
  • the fuel injector 10 for an internal combustion engine shown in the figure includes a fuel tank 11, a high-pressure fuel pump 12, and a fuel feed pump (eg, gear pump) 13 having a controlled electric drive 13a and fuel from the fuel tank 11 to the high-pressure pump 12 promotes.
  • the high-pressure pump 12 conveys fuel under high pressure into a high-pressure accumulator ("common rail") 14, to which in turn fuel injection valves (injectors) 15 are connected, which inject the fuel into the combustion chamber of the internal combustion engine regulated, which is connected to a leading back into the fuel tank 1 1 fuel return line 17.
  • the prefeed pump 3 is controlled by the pressure prevailing in its pressure-side conveying line 18 fuel pressure (discharge pressure) or on the delivered amount of fuel (flow rate.)
  • fuel pressure discharge pressure
  • flow rate flow rate
  • the pressure or quantity-controlled prefeed pump 13 regulates the conveyed total fuel quantity A, which is forced through the filter 19.
  • filter 19 and high-pressure pump 12 passes from the pressure-side counsellei Device 18 from a purge line 20, whereby the filtered fuel amount is divided into a flow rate B and a purge amount C.
  • the flow B is from the High-pressure pump 2 is conveyed under high pressure into the high-pressure accumulator 14, while the purge amount C is used to rinse the high-pressure pump 12 and is guided back into the fuel tank 1 1 via the fuel return line 17.
  • the exact total amount A through the filter 19 is controlled by a differential quantity valve 21 with an adjustable valve cross-section, through which the pressure-side delivery line 18 between pre-feed pump 13 and filter 19 is connected to the return line 17.
  • the differential quantity valve 21 is electrically actuated, for example, via an accelerator pedal 22 and, in the exemplary embodiment shown, is designed as a magnetic valve with a magnetic drive 23 which actuates the valve closing element (ball) 24 of the differential quantity valve 21 and thus adjusts the valve cross section.
  • the valve closing element 24 is biased in the closing direction via a closing spring 25 and is automatically opened independently of the magnetic drive 23 if the pressure prevailing in the pressure-side conveying line 18 is sufficient to control the valve closing element 24 against the action of the closing spring 25.
  • the differential quantity valve 21 thus opens at an overpressure in the pressure-side delivery line 18, e.g. due to a clogged filter 19, and thus takes over the safety function of a pressure relief valve.
  • the differential quantity valve 21 can be opened electrically for venting and consequently also takes over the venting function of a venting device not shown here in detail. Separate safety and ventilation valves are not required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

In a fuel injection device (10) for an internal combustion engine comprising a fuel pre-supply pump (13), which delivers fuel from a fuel tank (11) via a delivery line (18) on the pressure side to a high pressure fuel pump (12), the pre-supply pump (13) comprises a drive (13a) that is independent of the high pressure pump (12), in particular an electric drive. According to the invention, the delivery line (18) on the pressure side is connected via an electrically actuated quantity difference valve (21) having an adjustable valve cross-section to a return line (17).

Description

Beschreibung  description
Titel title
Kraftstoffeinspritzvorrichtunq mit Differenzmenqenreqelunq bei elektrischer Vorförderpumpe Die Erfindung geht aus von einer Kraftstoffeinspritzvorrichtung nach der Gattung des Anspruchs 1 .  The invention is based on a fuel injection device according to the preamble of claim 1.
Bekannt sind Kraftstoffeinspritzsysteme mit einem zwischen Vorförderpumpe und Hochdruckpumpe angeordneten druckseitigen Kraftstoff-Filter. Die Vorförderpum- pe ist als Außenzahnradpumpe ausgebildet und wird über die Antriebswelle der Hochdruckpumpe angetrieben, wobei die der Hochdruckpumpe zugeführte Kraftstoffmenge über eine separate Zumesseinheit geregelt wird. Zwischen der Vorförderpumpe und dem Filter sind ein Sicherheitsventil, das bei Überdruck einen Bruch der Leitung oder des Filters verhindert, und ein Entlüftungsventil zum Entlüf- ten der Förderleitung vorgesehen. Are known fuel injection systems with a pre-feed pump and high-pressure pump arranged pressure side fuel filter. The prefeed pump is designed as an external gear pump and is driven via the drive shaft of the high-pressure pump, wherein the amount of fuel supplied to the high-pressure pump is regulated via a separate metering unit. Between the priming pump and the filter, a safety valve is provided, which prevents a break in the pipe or the filter in the event of overpressure, and a venting valve for venting the delivery pipe.
Vorteile der Erfindung Advantages of the invention
Erfindungsgemäß wird die Fördermenge über ein Differenzmengenventil gesteu- ert, das gleichzeitig auch die Sicherheitsfunktion und Entlüftungsfunktion übernimmt. Das Differenzmengenventil ist beispielsweise vor einem druckseitigen Kraftstoff-Filter angeordnet. Die bekannte Mengenregelung mittels einer Zumesseinheit kann erfindungsgemäß auf eine z.B. mengengeregelte elektrische Vorförderpumpe (z.B. Zahnradpumpe) umgestellt werden. Vorteil dieser erfindungsge- mäßen Lösung ist die gleiche Qualität wie bei einer geregelten Elektrokraftstoff- pumpe, wobei aber Sicherheits- und Entlüftungsventile eingespart werden, zumal das Differenzmengenventil den gleichen Aufwand wie eine Zumesseinheit hat. Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstands der Erfindung sind der Beschreibung, der Zeichnung und den Ansprüchen entnehmbar. According to the invention, the delivery rate is controlled via a differential quantity valve which at the same time also assumes the safety function and ventilation function. The differential quantity valve is arranged, for example, in front of a pressure-side fuel filter. The known volume control by means of a metering unit according to the invention can be switched to an example quantity-controlled electric prefeed pump (eg gear pump). Advantage of this solution according to the invention is the same quality as in a regulated electric fuel pump, but safety and ventilation valves are saved, especially since the differential valve has the same expense as a metering unit. Further advantages and advantageous embodiments of the subject invention are the description, the drawings and claims removed.
Zeichnungen drawings
Nachstehend wird die Erfindung anhand eines in der Zeichnung stark schematisiert wiedergegebenen Ausführungsbeispiels näher erläutert. The invention will be explained in more detail with reference to a highly schematically illustrated in the drawing embodiment.
Die einzige Figur zeigt ein Ausführungsbeispiel der erfindungsgemäßen Kraftstoff- einspritzvorrichtung. The single FIGURE shows an embodiment of the fuel injection device according to the invention.
Beschreibung des Ausführungsbeispiels Description of the embodiment
Die in der Figur gezeigte Kraftstoffeinspritzvorrichtung 10 für eine Brennkraftma- schine umfasst einen Kraftstofftank 11 , eine Kraftstoff-Hochdruckpumpe 12 und eine Kraftstoff-Vorförderpumpe (z.B. Zahnradpumpe) 13, die einen geregelten elektrischen Antrieb 13a aufweist und Kraftstoff aus dem Kraftstofftank 1 1 zu der Hochdruckpumpe 12 fördert. Die Hochdruckpumpe 12 fördert Kraftstoff unter hohem Druck in einen Hochdruckspeicher („Common Rail") 14, an den wiederum Kraftstoffeinspritzventile (Injektoren) 15 angeschlossen sind, die den Kraftstoff in den Brennraum der Brennkraftmaschine einspritzen. Der Druck im Hochdruckspeicher 14 wird über ein Druckregelventil 16 geregelt, das an eine zurück in den Kraftstofftank 1 1 führende Kraftstoff-Rücklaufleitung 17 angeschlossen ist. Die Vorförderpumpe 3 ist über den in ihrer druckseitigen Förderleitung 18 herrschenden Kraftstoffdruck (Förderdruck) oder über die geförderte Kraftstoffmenge (Fördermenge) geregelt. In dieser von der Vorförderpumpe 13 zu der Hochdruckpumpe 12 führenden druckseitigen Förderleitung 18 ist ein Kraftstoff-Filter 19 angeordnet. Die druck- bzw. mengengeregelte Vorförderpumpe 13 regelt die geför- derte Kraftstoff-Gesamtmenge A, die durch den Filter 19 gedrückt wird. Zwischen Filter 19 und Hochdruckpumpe 12 geht von der druckseitigen Förderleitung 18 eine Spülleitung 20 ab, wodurch die gefilterte Kraftstoffmenge in eine Fördermenge B und in eine Spülmenge C aufgeteilt wird. Die Fördermenge B wird von der Hochdruckpumpe 2 unter hohem Druck in den Hochdruckspeicher 14 gefördert, während die Spülmenge C zum Spülen der Hochdruckpumpe 12 dient und über die Kraftstoff-Rücklaufleitung 17 zurück in den Kraftstofftank 1 1 geführt wird. Die genaue Gesamtmenge A durch den Filter 19 wird über ein Differenzmengen- ventil 21 mit verstellbarem Ventilquerschnitt gesteuert, durch das die druckseitige Förderleitung 18 zwischen Vorförderpumpe 13 und Filter 19 an die Rücklaufleitung 17 angeschlossen ist. Das Differenzmengenventil 21 wird z.B. über ein Gaspedal 22 elektrisch angesteuert und ist im gezeigten Ausführungsbeispiel als Magnet- ventil mit einem Magnetantrieb 23 ausgebildet, der das Ventilschließelement (Kugel) 24 des Differenzmengenventils 21 betätigt und damit den Ventilquerschnitt verstellt. Je weiter das Gaspedal 22 heruntergedrückt wird, desto weniger weit ist das Differenzmengenventil 21 geöffnet und desto geringer ist die über das Diffe- renzmengenventil 21 zurück in den Kraftstofftank 1 1 zurückströmende Kraftstoff- menge. Bei vollständig heruntergedrücktem Gaspedal 22 ist das Differenzmengenventil 21 geschlossen und die zum Filter 19 geförderte Gesamtmenge A somit maximal. The fuel injector 10 for an internal combustion engine shown in the figure includes a fuel tank 11, a high-pressure fuel pump 12, and a fuel feed pump (eg, gear pump) 13 having a controlled electric drive 13a and fuel from the fuel tank 11 to the high-pressure pump 12 promotes. The high-pressure pump 12 conveys fuel under high pressure into a high-pressure accumulator ("common rail") 14, to which in turn fuel injection valves (injectors) 15 are connected, which inject the fuel into the combustion chamber of the internal combustion engine regulated, which is connected to a leading back into the fuel tank 1 1 fuel return line 17. The prefeed pump 3 is controlled by the pressure prevailing in its pressure-side conveying line 18 fuel pressure (discharge pressure) or on the delivered amount of fuel (flow rate.) In this of the prefeed pump 13 is arranged a fuel filter 19. The pressure or quantity-controlled prefeed pump 13 regulates the conveyed total fuel quantity A, which is forced through the filter 19. Between filter 19 and high-pressure pump 12 passes from the pressure-side Förderlei Device 18 from a purge line 20, whereby the filtered fuel amount is divided into a flow rate B and a purge amount C. The flow B is from the High-pressure pump 2 is conveyed under high pressure into the high-pressure accumulator 14, while the purge amount C is used to rinse the high-pressure pump 12 and is guided back into the fuel tank 1 1 via the fuel return line 17. The exact total amount A through the filter 19 is controlled by a differential quantity valve 21 with an adjustable valve cross-section, through which the pressure-side delivery line 18 between pre-feed pump 13 and filter 19 is connected to the return line 17. The differential quantity valve 21 is electrically actuated, for example, via an accelerator pedal 22 and, in the exemplary embodiment shown, is designed as a magnetic valve with a magnetic drive 23 which actuates the valve closing element (ball) 24 of the differential quantity valve 21 and thus adjusts the valve cross section. The further the accelerator pedal 22 is depressed, the less far the differential quantity valve 21 is open and the lower the quantity of fuel flowing back into the fuel tank 11 via the differential quantity valve 21. When the accelerator pedal 22 is fully depressed, the differential quantity valve 21 is closed and the total quantity A conveyed to the filter 19 is thus maximum.
Das Ventilschließelement 24 ist über eine Schließfeder 25 in Schließrichtung vor- gespannt und wird unabhängig vom Magnetantrieb 23 automatisch geöffnet, wenn der in der druckseitigen Förderleitung 18 herrschende Druck ausreicht, das Ventilschließelement 24 gegen die Wirkung der Schließfeder 25 aufzusteuern. Das Differenzmengenventil 21 öffnet somit bei einem Überdruck in der druckseitigen Förderleitung 18, z.B. aufgrund eines verstopften Filters 19, und übernimmt folglich die Sicherheitsfunktion eines Überdruckventils. Das Differenzmengenventil 21 kann zur Entlüftung elektrisch geöffnet werden und übernimmt folglich auch die Entlüftungsfunktion einer hier nicht näher gezeigten Entlüftungseinrichtung. Separate Sicherheits- und Entlüftungsventile sind nicht erforderlich. The valve closing element 24 is biased in the closing direction via a closing spring 25 and is automatically opened independently of the magnetic drive 23 if the pressure prevailing in the pressure-side conveying line 18 is sufficient to control the valve closing element 24 against the action of the closing spring 25. The differential quantity valve 21 thus opens at an overpressure in the pressure-side delivery line 18, e.g. due to a clogged filter 19, and thus takes over the safety function of a pressure relief valve. The differential quantity valve 21 can be opened electrically for venting and consequently also takes over the venting function of a venting device not shown here in detail. Separate safety and ventilation valves are not required.

Claims

Patentansprüche claims
1 . Kraftstoffeinspritzvorrichtung (10) für eine Brennkraftmaschine, mit einer Kraftstoff-Vorförderpumpe (13), die Kraftstoff aus einem Kraftstofftank (1 1 ) über eine druckseitige Förderleitung (18) zu einer Kraftstoff- Hochdruckpumpe (12) fördert, 1 . A fuel injection device (10) for an internal combustion engine, with a fuel prefeed pump (13), the fuel from a fuel tank (1 1) via a pressure-side delivery line (18) promotes to a high-pressure fuel pump (12),
dadurch gekennzeichnet,  characterized,
dass die Vorförderpumpe (13) einen von der Hochdruckpumpe (12) unabhängigen, insbesondere elektrischen Antrieb (13a) aufweist und dass die druckseitige Förderleitung (18) über ein elektrisch angesteuertes Differenzmengenventil (21 ) mit verstellbarem Ventilquerschnitt an eine Rücklaufleitung (17) angeschlossen ist.  in that the prefeed pump (13) has an electric drive (13a), which is independent of the high-pressure pump (12), and in that the pressure-side delivery line (18) is connected to a return line (17) via an electrically actuated differential quantity valve (21) with an adjustable valve cross-section.
2. Kraftstoffeinspritzvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass in der druckseitigen Förderleitung (18) ein Kraftstoff-Filter (19) angeordnet ist und die druckseitige Förderleitung (18) zwischen der Vorförderpumpe (13) und dem Filter (19) über das Differenzmengenventil (21 ) an die Rücklaufleitung (17) angeschlossen ist. 2. Fuel injection device according to claim 1, characterized in that in the pressure-side delivery line (18) a fuel filter (19) is arranged and the pressure-side delivery line (18) between the prefeed pump (13) and the filter (19) via the differential quantity valve (19). 21) is connected to the return line (17).
3. Kraftstoffeinspritzvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Vorförderpumpe (13) über den in ihrer druckseitigen Förderleitung (18) herrschenden Kraftstoffdruck druckgeregelt oder über die geförderte Kraftstoffmenge mengengeregelt ist. 3. Fuel injection device according to claim 1 or 2, characterized in that the prefeed pump (13) via the pressure in its pressure-side conveying line (18) prevailing fuel pressure or volume controlled by the amount of fuel delivered.
4. Kraftstoffeinspritzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Differenzmengenventil (21 ) vom Gaspedal (22) angesteuert ist. 4. Fuel injection device according to one of the preceding claims, characterized in that the differential quantity valve (21) from the accelerator pedal (22) is driven.
5. Kraftstoffeinspritzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Ventilschließelement (24) des Diffe- renzmengenventils (21 ) in seine geschlossene Ventilstellung durch eine Schließfeder (25) vorgespannt ist und durch einen in der Förderleitung (18) herrschenden Überdruck aufsteuerbar ist. 5. Fuel injection device according to one of the preceding claims, characterized in that a valve closing element (24) of the differential Renzmengeventils (21) is biased in its closed valve position by a closing spring (25) and can be controlled by a in the delivery line (18) prevailing overpressure.
6. Kraftstoffeinspritzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Differenzmengenventil (21 ) als Magnetventil mit einem elektrisch angesteuerten Magnetantrieb (23) ausgebildet ist. 6. Fuel injection device according to one of the preceding claims, characterized in that the differential quantity valve (21) is designed as a solenoid valve with an electrically actuated magnetic drive (23).
7. Kraftstoffeinspritzvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an die Hochdruckpumpe (12) hochdrucksei- tig ein Hochdruckspeicher (14) angeschlossen ist, dessen Druck über ein Druckregelventil (16) geregelt ist, welches an die Rücklaufleitung (17) angeschlossen ist. 7. Fuel injection device according to one of the preceding claims, characterized in that the high-pressure pump (12) hochdrucksei- term a high-pressure accumulator (14) is connected, whose pressure via a pressure control valve (16) is controlled, which is connected to the return line (17) ,
EP10761005.7A 2009-12-02 2010-10-04 Fuel injection device with quantity difference control for an electric pre-supply pump Not-in-force EP2507503B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910047376 DE102009047376A1 (en) 2009-12-02 2009-12-02 Fuel injection device with differential quantity control in the case of an electric prefeed pump
PCT/EP2010/064710 WO2011067008A1 (en) 2009-12-02 2010-10-04 Fuel injection device with quantity difference control for an electric pre-supply pump

Publications (2)

Publication Number Publication Date
EP2507503A1 true EP2507503A1 (en) 2012-10-10
EP2507503B1 EP2507503B1 (en) 2015-07-01

Family

ID=43014928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10761005.7A Not-in-force EP2507503B1 (en) 2009-12-02 2010-10-04 Fuel injection device with quantity difference control for an electric pre-supply pump

Country Status (5)

Country Link
EP (1) EP2507503B1 (en)
CN (1) CN102770658B (en)
DE (1) DE102009047376A1 (en)
IN (1) IN2012DN02867A (en)
WO (1) WO2011067008A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015016656A1 (en) 2015-12-19 2017-06-22 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) A method of making a coated hot worked cured body and a body made by the method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010043374A1 (en) * 2010-11-04 2012-05-10 Robert Bosch Gmbh Fuel injection system of an internal combustion engine, and method for controlling the selbigen
DE102013218697A1 (en) * 2013-09-18 2015-03-19 Robert Bosch Gmbh Delivery system for a fluid
IT201700052993A1 (en) * 2017-05-16 2018-11-16 Bosch Gmbh Robert PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE
CN113074068A (en) * 2021-04-02 2021-07-06 浙江吉利控股集团有限公司 Fuel supply system for vehicle, control method of fuel supply system and vehicle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0270720A1 (en) * 1986-12-12 1988-06-15 Regie Nationale Des Usines Renault Variable-delivery pump
DE3911559A1 (en) * 1989-04-08 1990-10-11 Bosch Gmbh Robert CONTROL DEVICE FOR STOPPING AN INTERNAL COMBUSTION ENGINE
DE19549108A1 (en) * 1995-12-29 1997-07-03 Bosch Gmbh Robert High-pressure fuel generation system for a fuel injection system used in internal combustion engines
WO1999043941A2 (en) * 1998-02-27 1999-09-02 Stanadyne Automotive Corp. Diesel pump fuel inlet metering using proportional control valve
DE10318941A1 (en) * 2003-04-26 2004-11-11 Robert Bosch Gmbh Fuel system for internal combustion engine has choke device whose choke effect can be varied arranged between first fuel pump with variable delivery rate and second fuel pump feeding storage device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011067008A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015016656A1 (en) 2015-12-19 2017-06-22 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) A method of making a coated hot worked cured body and a body made by the method

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DE102009047376A1 (en) 2011-06-09
WO2011067008A1 (en) 2011-06-09
IN2012DN02867A (en) 2015-07-24
CN102770658A (en) 2012-11-07
CN102770658B (en) 2015-01-28
EP2507503B1 (en) 2015-07-01

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