EP2476890A1 - Supply device with a fuel transport device and use of such a supply device - Google Patents
Supply device with a fuel transport device and use of such a supply device Download PDFInfo
- Publication number
- EP2476890A1 EP2476890A1 EP12000153A EP12000153A EP2476890A1 EP 2476890 A1 EP2476890 A1 EP 2476890A1 EP 12000153 A EP12000153 A EP 12000153A EP 12000153 A EP12000153 A EP 12000153A EP 2476890 A1 EP2476890 A1 EP 2476890A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- supply device
- line
- pressure
- biasing means
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 148
- 238000004146 energy storage Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002981 blocking agent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0041—Means for damping pressure pulsations
-
- 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 F02M39/00Â -Â 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 F02M39/00Â -Â 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
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
Definitions
- the EP 1 387 079 A1 describes a common-rail fuel injection system with a high-pressure pump, which supplies the rail system with fuel via a flow rate control, to which in turn fuel injectors for fuel injection of each cylinder of an internal combustion engine are connected.
- the high-pressure pump is supplied with fuel via a low-pressure feed pump, wherein the low-pressure feed pump draws fuel from a tank and forwards it via a fuel filter to the high-pressure pump.
- the operating pressure in the rail system is regulated by means of an electronic control unit.
- the DE 197 41 297 A1 shows a fuel supply system of an internal combustion engine. Fuel is pumped out of a tank promoted a distribution unit. Between the pump and the distributor unit, a spring-loaded pressure accumulator for the fuel is provided. The accumulator is controlled by a valve connected in parallel with the pump.
- From the DE 10 2005 059 160 A1 shows a fuel system for an internal combustion engine, in which fuel is conveyed from a tank to a distribution bar by two feed pumps connected in series. Between the feed pumps, a check valve and a spring-loaded pressure accumulator are provided.
- the invention has for its object to provide a supply device with a fuel delivery device whose performance is improved.
- the supply device comprises a fuel delivery device for a fuel collector, in particular for a common rail injection device of an internal combustion engine, and at least one fuel tank, is conveyed from the fuel via a fuel line to the fuel pickup. It is a pretensioner for the hydraulic biasing of the fuel in the fuel line in the direction of the fuel sampler, wherein the biasing means is provided in addition to a biasing side with an energy storage such that fuel injected at a presettable pressure is stored at this pressure level in the biasing means.
- a drive unit is provided, which controls a connection line between the biasing device and the fuel line such that at least the connection line is partially blocked or released.
- the energy store is formed from a compressible medium in the form of a gas supply.
- the fuel delivery device has at least one first delivery unit and a second delivery unit.
- the first conveyor unit delivers fuel in a charging cycle to a biasing side of the biasing device, which emits fuel in a discharge cycle under bias in the assignable fuel line again.
- a biasing side of the biasing device which emits fuel in a discharge cycle under bias in the assignable fuel line again.
- a branch line may be provided, which opens onto the energy storage side of the biasing device.
- Fig.1 is shown in a schematic circuit diagram as a whole designated 1 supply device with a fuel delivery device 3 for conveying fuel for a fuel pickup 5.
- the fuel collector 5 is in the in the Fig.1 to 5 shown embodiments of the supply device 1 shown as a common rail injection device 7 for a diesel internal combustion engine not shown in detail.
- the supply device 1 has a fuel tank 9, is conveyed from the fuel via a fuel line 11 to the fuel pickup 5. Further, to the supply device 1 is a biasing means 13 belonging to the hydraulic bias of the fuel in the fuel line 11 in the direction of the fuel pickup fifth
- a first conveyor unit 15 is introduced, which supplies fuel in a charging cycle to a biasing side 17 of the biasing device 13.
- the biasing device 13 further comprises an energy storage 19, which serves to stockpiled fuel fed on the biasing side 17 with a predetermined elevated pressure level in the biasing device 13.
- the biasing means 13 is connected between the first and the second conveyor unit in the fuel line 11.
- the first delivery unit 15 provides lower pressure fuel and the second delivery unit 21 High pressure fuel is available to the fuel pickup 5.
- a drive unit 23 is provided which controls a connection line 25 between the biasing means 13 and the fuel line 11 so that at least the connection line 25 is partially blocked or released is.
- the drive unit 23 is formed from a valve 33, in particular from a 2/2-way switching valve.
- the first conveyor unit 15 is designed as a low pressure pump and the second conveyor unit 21 is formed as a high pressure pump.
- the respective delivery unit in particular in the form of the high-pressure pump could also be a pressure booster (not shown) occur.
- blocking means 35 are introduced in the form of a check valve 37 in the fuel line 11.
- a branch line 41 is provided, which comes from a fuel return line 39 from the fuel pickup 5 coming to the side with the energy storage 19 of the biasing device 13.
- the energy storage 19 may be supported in its effect on the biasing side 17 of the hydraulic accumulator 27.
- a fuel filter device 43 is introduced into the fuel line 11.
- a bypass line 51 bridging the valve 23 is introduced into the connection line 25.
- one of the fuel line 11 in the direction of the hydraulic accumulator 27 überstömbares check valve 53 is mounted.
- the check valve 53 can ensure the charging cycle of the hydraulic accumulator 27 independently of the respective switching position of the valve element 45.
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
Description
Die Erfindung betrifft eine Versorgungsvorrichtung mit einer Kraftstofffördereinrichtung für einen Kraftstoffabnehmer, insbesondere für eine Common-Rail-Einspritzeinrichtung einer Verbrennungskraftmaschine, mit den Merkmalen im Oberbegriff von Anspruch 1. Die Erfindung betrifft ferner eine Verwendung einer dahingehenden Versorgungsvorrichtung.The invention relates to a supply device with a fuel delivery device for a fuel collector, in particular for a common rail injection device of an internal combustion engine, with the features in the preamble of
Zur Kraftstoffversorgung von Brennräumen, insbesondere von selbstzündenden Verbrennungskraftmaschinen, wie Dieselmotoren, können druckgesteuerte oder hubgesteuerte Kraftstoffeinspritzeinrichtungen eingesetzt werden. Als Kraftstoffeinspritzeinrichtungen kommen Pumpen-DüsenEinrichtungen oder Pumpen-Leitungs-Einrichtungen, wie Speichereinspritzsysteme (Common-Rail) zum Einsatz. Derartige Common-Rail-Einspritzsysteme ermöglichen den Einspritzdruck an die jeweilige Last und die Drehzahl der betreffenden Verbrennungskraftmaschine anzupassen. Zur Erzielung hoher spezifischer Leistungen derartiger Verbrennungskraftmaschinen und zur Minimierung der Emissionen dahingehender Verbrennungskraftmaschinen ist ein möglichst hoher Einspritzdruck angestrebt. Der Kraftstoff für derartige Kraftstoffeinspritzeinrichtungen wird in an sich bekannter Weise mit Versorgungsvorrichtungen mit einer Kraftstofffördereinrichtung von einem Kraftstoffbehälter mit Hilfe einer Kraftstoffpumpe über eine Kraftstoffleitung an den dahingehenden, als Common-Rail-Einspritzeinrichtung gebildeten Kraftstoffabnehmer gefördert.For fuel supply of combustion chambers, in particular self-igniting internal combustion engines, such as diesel engines, pressure-controlled or stroke-controlled fuel injection devices can be used. As fuel injectors, there are used pump-nozzle devices or pump-line devices, such as common-rail systems. Such common rail injection systems make it possible to adapt the injection pressure to the respective load and the speed of the relevant internal combustion engine. In order to achieve high specific performance of such internal combustion engines and to minimize the emissions of such internal combustion engines, the highest possible injection pressure is desired. The fuel for such fuel injectors is in a conventional manner with supply devices with a fuel delivery from a fuel tank by means of a fuel pump via a fuel line to the pertinent, formed as a common rail injection device funded Kraftstoffabnehmer.
Die
Die
Die
Die
The
Aus der
Die bekannten Versorgungsvorrichtungen mit einer Kraftstofffördereinrichtung sind insbesondere in Bezug auf den Druckaufbau in ihrer Kraftstoffleitung verbesserungswürdig. Dadurch ist ein Kaltstartverhalten einer Verbrennungskraftmaschine, die von einer Common-Rail-Einspritzeinrichtung mit Kraftstoff versorgt wird, verbessert.The known supply devices with a fuel delivery device are in particular in need of improvement in relation to the pressure build-up in their fuel line. As a result, a cold start behavior of an internal combustion engine, which is supplied by a common rail injector with fuel, improved.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Versorgungsvorrichtung mit einer Kraftstofffördereinrichtung anzugeben, deren Betriebsverhalten verbessert ist.Based on this prior art, the invention has for its object to provide a supply device with a fuel delivery device whose performance is improved.
Die Aufgabe wird mit einer Versorgungsvorrichtung mit den Merkmalen des Patentanspruchs 1 in seiner Gesamtheit und mit einer Verwendung einer Versorgungsvorrichtung für eine Verbrennungskraftmaschine gemäß dem Patentanspruch 11 gelöst.The object is achieved with a supply device having the features of
Die erfindungsgemäße Versorgungsvorrichtung umfasst eine Kraftstofffördereinrichtung für einen Kraftstoffabnehmer, insbesondere für eine Common-Rail-Einspritzeinrichtung einer Verbrennungskraftmaschine, und zumindest einem Kraftstoffbehälter, aus dem Kraftstoff über eine Kraftstoffleitung an den Kraftstoffabnehmer gefördert ist. Es ist eine Vorspanneinrichtung zur hydraulischen Vorspannung des Kraftstoffs in der Kraftstoffleitung in Richtung des Kraftstoffabnehmers vorhanden, wobei die Vorspanneinrichtung neben einer Vorspannseite mit einem Energiespeicher derart versehen ist, dass mit vorgebbarem Druck eingespeister Kraftstoff auf diesem Druckniveau in der Vorspanneinrichtung bevorratet ist. Für das Durchführen eines Lade- und/oder Entladezyklus zwischen der Vorspanneinrichtung und der Kraftstoffleitung ist eine Ansteuereinheit vorgesehen, die eine Verbindungsleitung zwischen der Vorspanneinrichtung und der Kraftstoffleitung derart ansteuert, dass zumindest die Verbindungsleitung teilweise gesperrt oder freigegeben ist. Der Energiespeicher ist aus einem kompressiblen Medium in Form eines Gasvorrates gebildet. Die Kraftstofffördereinrichtung weist mindestens eine erste Fördereinheit und eine zweite Fördereinheit auf.The supply device according to the invention comprises a fuel delivery device for a fuel collector, in particular for a common rail injection device of an internal combustion engine, and at least one fuel tank, is conveyed from the fuel via a fuel line to the fuel pickup. It is a pretensioner for the hydraulic biasing of the fuel in the fuel line in the direction of the fuel sampler, wherein the biasing means is provided in addition to a biasing side with an energy storage such that fuel injected at a presettable pressure is stored at this pressure level in the biasing means. For performing a charging and / or discharging cycle between the biasing device and the fuel line, a drive unit is provided, which controls a connection line between the biasing device and the fuel line such that at least the connection line is partially blocked or released. The energy store is formed from a compressible medium in the form of a gas supply. The fuel delivery device has at least one first delivery unit and a second delivery unit.
Durch die erfindungsgemäße Vorspanneinrichtung ist gewährleistet, dass in der dahingehenden Kraftstoffleitung ständig ein Kraftstoffdruck anliegt, der geeignet ist, einen Kraftstoffabnehmer und vorzugsweise eine Kraftstoffhochdruckquelle mit Kraftstoff auf einem geeigneten Druckniveau zu versorgen. Insbesondere Druckschwankungen des Kraftstoffdrucks in der dahingehenden Einspritzeinrichtung beim Start einer Verbrennungskraftmaschine sind dadurch sicher vermieden. Insgesamt lassen sich dadurch neben einem verbesserten Startverhalten der Verbrennungskraftmaschine Emissionen der Verbrennungskraftmaschine reduzieren. Durch die Ansteuereinheit ist zudem ein Mittel geschaffen, um in Abhängigkeit von den verschiedenen Betriebsphasen des Kraftstoffabnehmers Kraftstoff der Vorspanneinrichtung zuzuführen oder von dieser zu entnehmen.By the biasing device according to the invention ensures that in the pertinent fuel line constantly a fuel pressure is applied, which is adapted to supply a fuel pickup and preferably a high-pressure fuel source with fuel at a suitable pressure level. In particular, pressure fluctuations of the fuel pressure in the pertinent injector at the start of an internal combustion engine are thereby avoided. Overall, emissions of the internal combustion engine can thereby be reduced in addition to an improved starting behavior of the internal combustion engine. In addition, a means is provided by the drive unit for supplying fuel to or from the biasing device as a function of the different operating phases of the fuel pickup.
Vorteilhaft liefert die erste Fördereinheit in einem Ladezyklus Kraftstoff auf eine Vorspannseite der Vorspanneinrichtung, die in einem Entladezyklus Kraftstoff unter Vorspannung in die zuordenbare Kraftstoffleitung wieder abgibt. Durch diese konstruktive Maßnahme kann sowohl während des Betriebs der Verbrennungskraftmaschine als auch vor oder nach dem Betrieb der Verbrennungskraftmaschine Kraftstoff auf eine Vorspannseite der Vorspanneinrichtung gefördert und auch wieder entnommen werden. Die Vorspanneinrichtung bewirkt über die hydraulische Vorspannung des Kraftstoffs in der Kraftstoffleitung hinaus somit eine Einspeisemöglichkeit von Kraftstoff in die dahingehende Kraftstoffleitung.Advantageously, the first conveyor unit delivers fuel in a charging cycle to a biasing side of the biasing device, which emits fuel in a discharge cycle under bias in the assignable fuel line again. Through this constructive measure, both during operation the internal combustion engine as well as before or after the operation of the internal combustion engine fuel is conveyed to a biasing side of the biasing device and also removed again. The biasing device thus causes via the hydraulic bias of the fuel in the fuel line also a feed possibility of fuel in the pertinent fuel line.
Die Vorspann-einrichtung kann zwischen der ersten und zweiten Fördereinheit in die Kraftstoffleitung eingebracht sein. Die erste Fördereinheit kann hierbei Kraftstoff mit niedrigerem Druck und die zweite Fördereinheit Kraftstoff mit hohem Druck dem Kraftstoffabnehmer zur Verfügung stellen. Auf diese Weise ist eingangsseitig der zweiten Fördereinheit Kraftstoff auf einem definierten Druckniveau anliegend vorhanden. Kavitation in der zweiten Fördereinheit wird durch diese konstruktive Maßnahme verhindert.The biasing device may be incorporated in the fuel line between the first and second delivery units. In this case, the first delivery unit can provide fuel at a lower pressure and the second delivery unit can provide fuel at high pressure to the fuel collector. In this way, the input side of the second delivery unit fuel is present at a defined pressure level fitting. Cavitation in the second conveyor unit is prevented by this structural measure.
In einem besonders vorteilhaften Ausführungsbeispiel der Versorgungsvorrichtung ist die Vorspanneinrichtung aus einem Hydrospeicher gebildet, vorzugsweise in Form eines Membran-, Kolben- oder Balgspeichers. Durch die Wahl der Hydrospeicher-Bauarten lassen sich grundsätzlich verschiedene Druckniveaus in der Kraftstoffförderleitung erzielen oder auch die Gesamtkosten der Versorgungsvorrichtung gestalten.In a particularly advantageous embodiment of the supply device, the biasing device is formed from a hydraulic accumulator, preferably in the form of a membrane, piston or bellows. By choosing the hydraulic accumulator types, it is basically possible to achieve different pressure levels in the fuel delivery line or to design the overall costs of the supply device.
Die Ansteuereinheit kann als Ventil, insbesondere als 2/2-Wege-Schaltventil ausgebildet sein. Auch durch diese konstruktive Maßnahme lassen sich die Herstellungskosten der Versorgungsvorrichtung vorteilhaft gestalten.The drive unit can be designed as a valve, in particular as a 2/2-way switching valve. Also by this constructive measure, the manufacturing cost of the supply device can make advantageous.
Die genannte erste und zweite Fördereinheit kann als Niederdruckpumpe bzw. Hochdruckpumpe ausgebildet sein. Um einen unerwünschten Kraftstofffluss von der Vorspanneinrichtung über die erste Fördereinheit hinweg zu verhindern, sind vorteilhaft Blockiermittel vorgesehen, insbesondere in Form eines Rückschlagventils, die eine ungewollte Rückströmung des Kraftstoffs in Richtung der ersten Fördereinheit verhindern.Said first and second delivery unit may be formed as a low pressure pump or high pressure pump. In order to prevent unwanted fuel flow from the biasing means across the first conveyor unit, blocking means are advantageously provided, in particular in FIG Form of a check valve, which prevent unwanted backflow of the fuel in the direction of the first conveyor unit.
In einer Kraftstoffrücklaufleitung von dem Kraftstoffabnehmer in Richtung des Kraftstoffbehälters kann eine Abzweigleitung vorgesehen sein, die auf die Energiespeicherseite der Vorspanneinrichtung mündet.In a fuel return line from the fuel collector in the direction of the fuel tank, a branch line may be provided, which opens onto the energy storage side of the biasing device.
Zwischen der ersten Fördereinheit und dem Blockiermittel kann eine Kraftstofffiltereinrichtung vorgesehen sein, um vorgefilterten Kraftstoff der zweiten Fördereinheit zuführen zu können.A fuel filter device may be provided between the first conveyor unit and the blocking means in order to be able to supply prefiltered fuel to the second conveyor unit.
Zur Verbesserung der Kaltstarteigenschaften der Verbrennungskraftmaschine wird vorteilhaft mit Beginn des Startvorganges und mit Beginn des Betriebs der ersten Fördereinheit die Vorspanneinrichtung in den Entladezyklus geschaltet. Die Vorspanneinrichtung unterstützt somit sowohl in Bezug auf die Druckbeaufschlagung von Kraftstoff in der Kraftstoffförderleitung als auch in Bezug auf die Förderung von Kraftstoff in der Kraftstoffförderleitung die erste Fördereinheit. Insbesondere wird über die Vorspanneinrichtung das Common-Rail-System unmittelbar mit Kraftstoff versorgt, auch wenn die jeweilige Fördereinheit aufgrund des Kaltstartvorganges nur eine geringe Förderleistung aufbringen kann. Insoweit dient die Vorspanneinrichtung als eine Art Überbrückung, bis die normale Hochdruckversorgung sichergestellt ist.To improve the cold start characteristics of the internal combustion engine, the biasing device is advantageously switched into the discharge cycle at the beginning of the starting process and at the beginning of the operation of the first conveying unit. The biasing device thus assists both the pressurization of fuel in the fuel delivery line and the delivery of fuel in the fuel delivery line to the first delivery unit. In particular, the common rail system is directly supplied with fuel via the biasing device, even if the respective delivery unit can only apply a low delivery rate due to the cold start process. In that regard, the biasing device serves as a kind of bridging until the normal high pressure supply is ensured.
Im Folgenden wird die erfindungsgemäße Versorgungsvorrichtung anhand verschiedener Ausführungsbeispiele nach der Zeichnung näher beschrieben. Dabei zeigt die
- Fig.1
- einen schematischen Schaltplan eines ersten Ausführungsbeispiels der Versorgungsvorrichtung für eine Kraftstoffförderein- richtung für einen Kraftstoffabnehmer in Form einer Common-Rail-Einspritzeinrichtung einer Dieselbrennkraftmaschine; und
- Fig.2 bis 5
- weitere Ausführungsbeispiele eines jeweiligen schematischen Schaltplans einer Versorgungsvorrichtung mit einer Kraftstofffördereinrichtung.
- Fig.1
- 1 is a schematic circuit diagram of a first exemplary embodiment of the supply device for a fuel delivery unit; direction for a fuel collector in the form of a common rail injector of a diesel engine; and
- 2 to 5
- Further embodiments of a respective schematic circuit diagram of a supply device with a fuel delivery device.
In der
In der Kraftstoffleitung 11 ist eine erste Fördereinheit 15 eingebracht, die in einem Ladezyklus Kraftstoff auf eine Vorspannseite 17 der Vorspanneinrichtung 13 liefert. Die Vorspanneinrichtung 13 weist ferner einen Energiespeicher 19 auf, der dazu dient, eingespeisten Kraftstoff auf der Vorspannseite 17 mit einem vorgebbaren erhöhten Druckniveau in der Vorspanneinrichtung 13 zu bevorraten. Wie die
Die Vorspanneinrichtung 13 ist in den gezeigten Ausführungsbeispielen aus einem Hydrospeicher 27 gebildet, der in Form eines Membranspeichers (vgl.
In den gezeigten Ausführungsbeispielen ist die Ansteuereinheit 23 aus einem Ventil 33, insbesondere aus einem 2/2-Wege-Schaltventil gebildet. Die erste Fördereinheit 15 ist als Niederdruckpumpe ausgebildet und die zweite Fördereinheit 21 als Hochdruckpumpe ausgebildet. Anstelle der jeweiligen Fördereinheit, insbesondere in Form der Hochdruckpumpe könnte auch ein Druckübersetzer (nicht dargestellt) treten. Um eine Rückströmung von Kraftstoff aus der Vorspanneinrichtung 13 in Richtung auf die erste Fördereinheit 15 zu verhindern, sind Blockiermittel 35 in Form eines Rückschlagventils 37 in die Kraftstoffleitung 11 eingebracht. Wie die
Zur Filterung des Kraftstoffs, welcher in Richtung auf die zweite Fördereinheit 21 mit Hilfe der ersten Fördereinheit 15 gefördert ist, ist zwischen dem Blockiermittel 35 und der ersten Fördereinheit 15 eine Kraftstofffiltereinrichtung 43 in die Kraftstoffleitung 11 eingebracht.For filtering the fuel, which is conveyed in the direction of the
Neben den verschiedenen Bauarten des Hydrospeichers 27 unterscheiden sich die Ausführungsbeispiele in den
In dem in
Die gezeigte Versorgungsvorrichtung 1 kann insoweit zur Verbesserung der Kaltstarteigenschaften einer nicht gezeigten Verbrennungskraftmaschine, von der lediglich die Common-Rail-Einspritzeinrichtung 7 in Form von einer Hochdruck-Verteilerleiste 55, an der vier Kraftstoffinjektoren 57 angeschlossen sind, beitragen, indem spätestens mit Beginn des Startvorganges der Verbrennungskraftmaschine und dem Betrieb der ersten Fördereinheit 15 die Vorspanneinrichtung 13 durch die jeweilige Ansteuereinheit 23 in einen Entladezyklus geschaltet wird. Eine weitere Kraftstofffiltereinrichtung 59 ist zwischen dem Kraftstoffbehälter 9 und der ersten Fördereinheit 15 vorgesehen, um den Tankinhalt vor Zufuhr zu der dahingehenden Niederdruckpumpe 15 abzureinigen.The
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE201110008484 DE102011008484A1 (en) | 2011-01-13 | 2011-01-13 | Supply device with a fuel conveyor and use of a pertinent supply device |
Publications (2)
Publication Number | Publication Date |
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EP2476890A1 true EP2476890A1 (en) | 2012-07-18 |
EP2476890B1 EP2476890B1 (en) | 2018-08-29 |
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EP12000153.2A Active EP2476890B1 (en) | 2011-01-13 | 2012-01-12 | Supply device with a fuel transport device and use of such a supply device |
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EP (1) | EP2476890B1 (en) |
DE (1) | DE102011008484A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015024649A1 (en) * | 2013-08-22 | 2015-02-26 | Hydac Filtertechnik Gmbh | Fuel supply system |
WO2015034415A1 (en) * | 2013-09-04 | 2015-03-12 | Scania Cv Ab | Fuel system for a combustion engine, combustion engine with such a fuel system, vehicle with such a fuel system, and method for damping pressure fluctuations in a fuel system |
WO2017001103A1 (en) * | 2015-06-29 | 2017-01-05 | Robert Bosch Gmbh | Fuel tank |
WO2017021583A1 (en) * | 2015-08-06 | 2017-02-09 | Wärtsilä Finland Oy | Fuel injection system and method for operating a piston engine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014222417B4 (en) | 2014-11-03 | 2022-03-17 | Vitesco Technologies GmbH | fuel delivery unit |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19741297A1 (en) | 1997-09-19 | 1999-03-25 | Pierburg Ag | Fuel supply system for IC engines |
DE19910970A1 (en) | 1999-03-12 | 2000-09-28 | Bosch Gmbh Robert | Fuel injector |
DE19957591A1 (en) * | 1999-04-01 | 2000-10-12 | Mitsubishi Electric Corp | Fuel supply system for direct injection petrol (gasoline) engine, with resonator as pressure pulsation suppression device |
US20020078928A1 (en) * | 2000-12-27 | 2002-06-27 | Mitsubishi Denki Kabushiki Kaisha | Variable delivery type fuel supply apparatus |
DE10149412C1 (en) * | 2001-10-06 | 2003-02-06 | Bosch Gmbh Robert | Device for deadening compressive pulsations in a fluid system like a fuel system for an ICE has a casing, a hollow area with an intermittent working area linked to a flow path for a liquid system and intermittent preload devices for gas. |
EP1387079A1 (en) | 2002-07-30 | 2004-02-04 | Magneti Marelli Powertrain S.p.A. | Fuel injection system of the common rail type with a variable flow-rate pump |
DE10247210A1 (en) | 2002-10-10 | 2004-04-22 | Robert Bosch Gmbh | Fuel injection unit for internal combustion engines has filter element connected in series to one chamber of pressure intensifier and to flow lines for filling of at least one chamber of pressure intensifier |
DE102005059160A1 (en) | 2005-12-12 | 2007-06-14 | Robert Bosch Gmbh | Fuel system for an internal combustion engine |
-
2011
- 2011-01-13 DE DE201110008484 patent/DE102011008484A1/en not_active Withdrawn
-
2012
- 2012-01-12 EP EP12000153.2A patent/EP2476890B1/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19741297A1 (en) | 1997-09-19 | 1999-03-25 | Pierburg Ag | Fuel supply system for IC engines |
DE19910970A1 (en) | 1999-03-12 | 2000-09-28 | Bosch Gmbh Robert | Fuel injector |
DE19957591A1 (en) * | 1999-04-01 | 2000-10-12 | Mitsubishi Electric Corp | Fuel supply system for direct injection petrol (gasoline) engine, with resonator as pressure pulsation suppression device |
US20020078928A1 (en) * | 2000-12-27 | 2002-06-27 | Mitsubishi Denki Kabushiki Kaisha | Variable delivery type fuel supply apparatus |
DE10149412C1 (en) * | 2001-10-06 | 2003-02-06 | Bosch Gmbh Robert | Device for deadening compressive pulsations in a fluid system like a fuel system for an ICE has a casing, a hollow area with an intermittent working area linked to a flow path for a liquid system and intermittent preload devices for gas. |
EP1387079A1 (en) | 2002-07-30 | 2004-02-04 | Magneti Marelli Powertrain S.p.A. | Fuel injection system of the common rail type with a variable flow-rate pump |
DE10247210A1 (en) | 2002-10-10 | 2004-04-22 | Robert Bosch Gmbh | Fuel injection unit for internal combustion engines has filter element connected in series to one chamber of pressure intensifier and to flow lines for filling of at least one chamber of pressure intensifier |
DE102005059160A1 (en) | 2005-12-12 | 2007-06-14 | Robert Bosch Gmbh | Fuel system for an internal combustion engine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015024649A1 (en) * | 2013-08-22 | 2015-02-26 | Hydac Filtertechnik Gmbh | Fuel supply system |
WO2015034415A1 (en) * | 2013-09-04 | 2015-03-12 | Scania Cv Ab | Fuel system for a combustion engine, combustion engine with such a fuel system, vehicle with such a fuel system, and method for damping pressure fluctuations in a fuel system |
WO2017001103A1 (en) * | 2015-06-29 | 2017-01-05 | Robert Bosch Gmbh | Fuel tank |
WO2017021583A1 (en) * | 2015-08-06 | 2017-02-09 | Wärtsilä Finland Oy | Fuel injection system and method for operating a piston engine |
Also Published As
Publication number | Publication date |
---|---|
DE102011008484A1 (en) | 2012-07-19 |
EP2476890B1 (en) | 2018-08-29 |
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