WO2010076004A1 - Fuel metering device for an internal combustion engine - Google Patents

Fuel metering device for an internal combustion engine Download PDF

Info

Publication number
WO2010076004A1
WO2010076004A1 PCT/EP2009/009268 EP2009009268W WO2010076004A1 WO 2010076004 A1 WO2010076004 A1 WO 2010076004A1 EP 2009009268 W EP2009009268 W EP 2009009268W WO 2010076004 A1 WO2010076004 A1 WO 2010076004A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
pressure
pressure mixing
tank
brennstoffzumesseinrichtung
Prior art date
Application number
PCT/EP2009/009268
Other languages
German (de)
French (fr)
Inventor
Alfred Luhmann
Original Assignee
Alfred Luhmann
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 Alfred Luhmann filed Critical Alfred Luhmann
Publication of WO2010076004A1 publication Critical patent/WO2010076004A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/081—Adjusting the fuel composition or mixing ratio; Transitioning from one fuel to the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/10—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous
    • F02D19/105—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels peculiar to compression-ignition engines in which the main fuel is gaseous operating in a special mode, e.g. in a liquid fuel only mode for starting
    • 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
    • F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • F02M43/04—Injectors peculiar thereto
    • 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
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0265—Pumps feeding common rails
    • F02M63/027—More than one high pressure pump feeding a single common rail
    • 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
    • F02M37/0076—Details of the fuel feeding system related to the fuel tank
    • F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the invention relates to a fuel metering device for, in particular, a self-igniting air-compressing internal combustion engine having a first fuel pump for delivering a first fuel such as a diesel fuel and a second fuel pump for supplying a second fuel, in particular a liquefied petroleum gas (LPG) fuel.
  • a first fuel pump for delivering a first fuel such as a diesel fuel
  • a second fuel pump for supplying a second fuel, in particular a liquefied petroleum gas (LPG) fuel.
  • LPG liquefied petroleum gas
  • Fuel metering devices for the supply of fuel mixtures are known. For example, it is known from DE 10 2004 011 414 A1, by injection of a fuel mixture from fuels of different properties of diesel engine combustion with the combustion of the same volume Otto Motors to gain advantages in terms of performance and emissions of fuels.
  • the fuel metering device of the type mentioned above is characterized in that the pressure mixing tank a Dampfdruck- buffer space, which is connectable to a vapor return line, which opens into the vapor pressure space of the fuel tank of the second fuel.
  • the level inside the pressure mixing tank is to be secured by level sensors, but also by appropriate fuel metering pumps.
  • a self-priming, but outside the tank, calibrated and load-controlled and controlled by a level sensor fuel pump are preferably provided for the second fuel, which promotes the second fuel via a universal mixing nozzle in the mixing vessel.
  • This mixing vessel is under a controlled pressure.
  • the first fuel such as a diesel fuel can be promoted via a universal mixing nozzle in the pressure mixing vessel.
  • the universal nozzle takes over by the flow velocity of the LPG - A -
  • the mixing is maintained constantly with the engine running by the introduced return quantities.
  • the fuel mixture is supplied via a high-pressure pump to the conventional injection system of the internal combustion engine.
  • Such external high-pressure pumps are not susceptible to interference and easy to replace. This does not require a suction of the tank contents.
  • Each fuel can be controlled, calibrated, and weighed to achieve the same composition within the blender, resulting in consistent combustion and uniform emissions even with temperature-dependent fuel density.
  • the provided level sensors is always a constant filling of the pressure mixing tank to achieve. Via provided pressure sensors it is ensured that in the pressure mixing tank matching pressure conditions are present. Should there be a malfunction within the supply line from the fuel tank of the second fuel, or should it come to, for example, a fuel oil tank of the second fuel, it should be ensured by providing valves that the entire distance for the second fuel is shut off. In this case, the fuel pump for the first fuel (diesel pump) takes over the sole supply of the pressure mixing tank, so that even in this case a malfunction of the internal combustion engine can not occur.
  • the pressure mixing tank receives a temperature sensor, which can shut off the LPG fuel supply at excessive temperature.
  • the fuel pump for the diesel fuel takes the sole supply of the pressure mixing tank, so that the system can cool down without malfunction. If a sufficiently low temperature level is reached, the LPG fuel supply can reconnect.
  • the Brennstoffzumess raised according to the present invention is particularly suitable to be additionally grown in conventional internal combustion engines.
  • commercial vehicles and e.g. Retrofit buses with such a metering device in order to change to a two-fuel mixing operation can.
  • the associated construction costs are kept within narrow limits.
  • a universal mixing nozzle is preferably provided on the underside of the universal pressure container, at which coming from below all filling and return lines opening into the pressure mixing container are connected. This ensures a continuous mixing of the two specifically unequal heavy fuels.
  • FIGS. 1 and 2 each show a system diagram, with FIG. 2 showing more closely the pressure mixing container.
  • the fuel metering device which comprises an LPG tank 2, which is acted upon by a relatively low overpressure and comprises a vapor pressure chamber 2.1, and a diesel tank 3, is generally illustrated at 1.
  • the fuel passes first (bypassing a high pressure pump 8) via the strand 9 to a pressure mixing vessel 11.
  • the fuels of LPG and diesel are mixed, wherein within the pressure vessel 11, a vapor pressure buffer room 12 is formed.
  • a pressure sensor is provided within the vapor pressure buffer chamber 12, which releases the line 13 when an adjustable overpressure is exceeded, which in turn opens to the vapor pressure chamber 2.1 of the LPG tank 2 out.
  • the fuel mixture passes via the line 14 and the already mentioned high-pressure pump 8 (for example with an operating pressure of 1,600 bar) to the injection system of an internal combustion engine, generally designated 15. a truck.
  • Unconsumed (mixed) fuel can in turn be supplied via the line 16 and the bypass valve 10 to the vapor pressure buffer chamber 12 of the pressure mixing tank 11.
  • a universal mixing nozzle 17 is provided at the coming from below all incoming in the pressure mixing tank 11 filling and return lines are connected. As a result, a turbulence in the pressure mixing tank 11 is to be carried out while the internal combustion engine is running. After downtime, the engine can be started with diesel fuel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The invention relates to a fuel metering device (1) for a compression-ignition in particular, air-compressing internal combustion engine having a first fuel pump (5) for delivering a first fuel such as a diesel fuel, and having a second fuel pump (4) for feeding a second fuel, in particular a liquefied petroleum gas (LPG) fuel, wherein the first fuel and the second fuel each can be drawn from a tank (2, 3) and supplied to a pressure mixing tank (11), wherein a mixed fuel can be fed from the pressure mixing tank (11) by means of a high-pressure pump (8) to the injection system (15) of the internal combustion engine, and wherein the injection system (15) comprises a return line (10) controlled by a pressure and bypass valve, by means of which excess mixed fuel in the injection system (15) can be fed to the pressure mixing tank (11). In order to provide a fuel metering device having reduced operating risks, said device is characterized in that the pressure mixing tank (11) comprises a vapor pressure buffer chamber (12) that can be connected to a vapor return line opening into the vapor chamber (2.1) of the tank (2) of the second fuel.

Description

Brennstoffzumesseinrichtung für eine Brennkraftmaschine Brennstoffzumesseinrichtung for an internal combustion engine
Die Erfindung bezieht sich auf eine Brennstoffzumesseinrichtung für insbesondere eine selbstzündende, luftverdichtende Brennkraftmaschine mit einer ersten Kraftstoffpumpe zur Förderung eines ersten Kraftstoffes wie einen Dieselkraftstoff sowie mit einer zweiten Kraftstoffpumpe zur Zuführung eines zweiten Kraftstoffes, insbesondere eines Liquified-Petroleum-Gas (LPG)-Kraftstoffes, wobei der erste Kraftstoff und der zweite Kraftstoff jeweils einem Tank entnehmbar und einem Druckmischbehälter zuführbar sind und wobei aus dem Druckmischbehälter ein Mischkraftstoff über eine Hochdruckpumpe dem Einspritzsystem der Brennkraftmaschine zuführbar ist.The invention relates to a fuel metering device for, in particular, a self-igniting air-compressing internal combustion engine having a first fuel pump for delivering a first fuel such as a diesel fuel and a second fuel pump for supplying a second fuel, in particular a liquefied petroleum gas (LPG) fuel. wherein the first fuel and the second fuel are each removable from a tank and a pressure mixing container can be fed and wherein from the pressure mixing vessel a mixed fuel via a high-pressure pump to the injection system of the internal combustion engine can be fed.
Brennstoffzumesseinrichtungen für die Zuführung von Kraftstoffgemischen sind bekannt. So ist es beispielsweise aus der DE 10 2004 011 414 A1 bekannt, durch die Einspritzung eines Kraftstoffgemisches aus Kraftstoffen unterschiedlicher Eigenschaften der dieselmotorischen Verbrennung mit der Gleichraumverbrennung des Otto-Motors zu kombinieren, um daraus Vorteile hinsichtlich Leistung und Emissionen von Kraftstoffen zu gewinnen.Fuel metering devices for the supply of fuel mixtures are known. For example, it is known from DE 10 2004 011 414 A1, by injection of a fuel mixture from fuels of different properties of diesel engine combustion with the combustion of the same volume Otto Motors to gain advantages in terms of performance and emissions of fuels.
Aus dieser Druckschrift ist bekannt, eine Brennungskraftmaschine so auszustatten, dass eine Kraftstoffmischung von einem unter einem relativ geringem Überdruck flüssig zu haltenden LPG-Kraftstoff und einem Dieselkraftstoff direkt in den Brennraum eingespritzt wird, wobei die Brennungskraftmaschine als luftverdichtende Brennkraftmaschine ausgebildet ist und zwei Kraftstofftanks für die beiden Kraftstoffe aufweist. Den beiden Tanks ist ein Druckmischbehälter nachgeordnet, von dem das Kraftstoffgemisch über eine Hochdruckpumpe dem Einspritzsystem der Brennkraftmaschine zugeführt wird.From this document is known to equip an internal combustion engine so that a fuel mixture is injected from a liquid to be held under a relatively low pressure LPG fuel and a diesel fuel directly into the combustion chamber, wherein the internal combustion engine is designed as an air-compressing internal combustion engine and two fuel tanks for the has two fuels. The two tanks downstream of a pressure mixing vessel, from which the fuel mixture is fed via a high pressure pump to the injection system of the internal combustion engine.
Bei der DE 10 2004 011 414 ist vorgesehen, dass die Kraftstoffpumpen innerhalb des jeweiligen Kraftstofftankes vorgesehen sind, wodurch sich keine Reparaturmöglichkeit an den Kraftstoffpumpen bei einem vollen Tank ergibt. Zudem ist ein Druckmischbehälter vorgesehen, der randvoll gefüllt ist, so dass kein Ausdehnungsraum vorhanden ist, womit eine erhebliche Berstgefahr einhergeht.In DE 10 2004 011 414 it is provided that the fuel pumps are provided within the respective fuel tank, resulting in no possibility of repair to the fuel pump at a full tank. In addition, a pressure mixing container is provided, which is filled to the brim, so that no expansion space is present, which is associated with a significant risk of bursting.
Es ist Aufgabe der vorliegenden Erfindung, eine Brennstoffzumesseinrichtung zur Verfügung zu stellen, mit der sicher ein Kraftstoffgemisch aus dem ersten und zweiten Kraftstoff für den verbrennungsmotorischen Betrieb zur Verfügung zu stellen ist.It is an object of the present invention to provide a fuel metering device that is safe to provide a fuel mixture of the first and second fuels for internal combustion engine operation.
Zur Lösung dieser Aufgabe zeichnet sich die Brennstoffzumesseinrichtung der eingangs genannten Art dadurch aus, dass der Druckmischbehälter einen Dampfdruck- pufferraum aufweist, der an eine Dampfrückführleitung anschließbar ist, die in den Dampfdruckraum des Kraftstofftanks des zweiten Kraftstoffes mündet.To solve this problem, the fuel metering device of the type mentioned above is characterized in that the pressure mixing tank a Dampfdruck- buffer space, which is connectable to a vapor return line, which opens into the vapor pressure space of the fuel tank of the second fuel.
Damit ist eine Brennstoffzumesseinrichtung zur Verfügung gestellt, mit der sicherzustellen ist, dass überschüssiger Mischkraftstoff vom Einspritzsystem wieder dem Druckmischbehälter zuzuführen ist, wobei jedoch gleichwohl immer ein so hinreichender Dampfdruckpufferraum zur Verfügung steht, z. B. gesteuert über Füllstandssensoren, dass bei Anfall eines Überdruckes sich dieser Dampfdruckraum zum Kraftstofftank des zweiten Kraftstoffes (z.B. dem LPG-Kraftstoff) öffnet. Dabei kann das Dampfdruckpufferraumvolumen ca. 25 % des Volumens des Druckmischbehälters ausmachen. Etwaige Berstgefahren sind damit so gut wie ausgeschlossen.This is a Brennstoffzumesseinrichtung provided to ensure that excess mixed fuel from the injection system is to be fed back to the pressure mixing vessel, but nevertheless always such a sufficient vapor pressure buffer space is available, for. B. Controlled by level sensors, that upon the occurrence of an overpressure, this vapor pressure space to the fuel tank of the second fuel (for example, the LPG fuel) opens. In this case, the vapor pressure buffer chamber volume can make up about 25% of the volume of the pressure mixing container. Any risk of bursting is thus virtually eliminated.
Der Füllstand innerhalb des Druckmischbehälters ist durch Füllstandsensoren zu sichern, aber auch durch entsprechende Kraftstoffdosierpumpen. Dazu sind vorzugsweise für den zweiten Kraftstoff eine selbstansaugende, jedoch außerhalb des Tanks liegende, kalibrierte sowie lastgesteuerte und von einem Füllstandssensor gesteuerte Kraftstoffpumpe vorgesehen, die den zweiten Kraftstoff über eine Universalmischdüse in den Mischbehälter fördert. Dieser Mischbehälter steht unter einem gesteuerten Druck. Über eine weitere Kraftstoffpumpe, die ebenfalls außerhalb des Tankes liegt und ebenfalls selbstansaugend, kalibriert, lastenabhängig und Füllstandssensor gesteuert ist, kann der erste Kraftstoff, beispielsweise ein Dieselkraftstoff über eine Universalmischdüse in den Druckmischbehälter gefördert werden. Die Universaldüse übernimmt durch die Strömungsgeschwindigkeit des LPG- - A -The level inside the pressure mixing tank is to be secured by level sensors, but also by appropriate fuel metering pumps. For this purpose, a self-priming, but outside the tank, calibrated and load-controlled and controlled by a level sensor fuel pump are preferably provided for the second fuel, which promotes the second fuel via a universal mixing nozzle in the mixing vessel. This mixing vessel is under a controlled pressure. About another fuel pump, which is also outside the tank and also self-priming, calibrated, load-dependent and level sensor is controlled, the first fuel, such as a diesel fuel can be promoted via a universal mixing nozzle in the pressure mixing vessel. The universal nozzle takes over by the flow velocity of the LPG - A -
Kraftstoffs und des Dieselkraftstoffs die Durchmischung. Die Durchmischung wird bei laufendem Motor ständig durch die eingeleiteten Rücklaufmengen aufrecht erhalten. Von dem Druckmischbehälter wird das Kraftstoffgemisch über eine Hochdruckpumpe dem herkömmlichen Einspritzsystem der Brennkraftmaschine zugeführt. Derartige außenliegende Hochdruckpumpen sind störunanfällig und auch einfach zu tauschen. Dazu bedarf es nicht einer Absaugung des Tankinhaltes. Der jeweilige Kraftstoff lässt sich geregelt, kalibriert und gewogen zufördern, wodurch eine gleiche Zusammensetzung innerhalb des Druckmischbehälters zu erzielen ist, was zu einer gleichmäßigen Verbrennung und zu gleichmäßigen Abgaswerten auch bei temperaturabhängiger Dichte der Kraftstoffe führt.Fuel and diesel fuel the mix. The mixing is maintained constantly with the engine running by the introduced return quantities. From the pressure mixing tank, the fuel mixture is supplied via a high-pressure pump to the conventional injection system of the internal combustion engine. Such external high-pressure pumps are not susceptible to interference and easy to replace. This does not require a suction of the tank contents. Each fuel can be controlled, calibrated, and weighed to achieve the same composition within the blender, resulting in consistent combustion and uniform emissions even with temperature-dependent fuel density.
Durch die vorgesehenen Füllstandssensoren ist immer eine gleichbleibende Füllung des Druckmischbehälters zu erzielen. Über vorgesehene Drucksensoren ist sichergestellt, dass im Druckmischbehälter übereinstimmende Druckverhältnisse vorliegen. Sollte es zu einer Funktionsstörung innerhalb der Zuleitung aus dem Kraftstofftank des zweiten Kraftstoffes kommen oder sollte es beispielsweise zu einem ieer- gefahrenen Kraftstofftank des zweiten Kraftstoffes kommen, ist durch vorgesehene Ventile sicherzustellen, dass die gesamte Strecke für den zweiten Kraftstoff abzuschalten ist. In diesem Fall übernimmt die Kraftstoffpumpe für den ersten Kraftstoff (Dieselpumpe) die alleinige Versorgung des Druckmischbehälters, so dass auch in diesem Falle eine Betriebsstörung der Brennkraftmaschine nicht eintreten kann.Due to the provided level sensors is always a constant filling of the pressure mixing tank to achieve. Via provided pressure sensors it is ensured that in the pressure mixing tank matching pressure conditions are present. Should there be a malfunction within the supply line from the fuel tank of the second fuel, or should it come to, for example, a fuel oil tank of the second fuel, it should be ensured by providing valves that the entire distance for the second fuel is shut off. In this case, the fuel pump for the first fuel (diesel pump) takes over the sole supply of the pressure mixing tank, so that even in this case a malfunction of the internal combustion engine can not occur.
Zusätzlich erhält der Druckmischbehälter einen Temperatursensor, der bei überhöhter Temperatur die LPG-Kraftstoffzuführung abschalten kann. In diesem Fall über- nimmt die Kraftstoffpumpe für den Dieselkraftstoff die alleinige Versorgung des Druckmischbehälters, so dass ohne Betriebsstörung die Anlage abkühlen kann. Ist ein hinreichend niedriger Temperaturlevel erreicht, kann sich die LPG- Kraftstoffversorgung wieder zuschalten.In addition, the pressure mixing tank receives a temperature sensor, which can shut off the LPG fuel supply at excessive temperature. In this case, The fuel pump for the diesel fuel takes the sole supply of the pressure mixing tank, so that the system can cool down without malfunction. If a sufficiently low temperature level is reached, the LPG fuel supply can reconnect.
Die Brennstoffzumesseinrichtung nach der vorliegenden Erfindung ist insbesondere auch geeignet, bei herkömmlichen Brennkraftmaschinen zusätzlich angebaut zu werden. So lassen sich Nutzfahrzeuge und z.B. Omnibusse mit einer derartigen Zumesseinrichtung nachrüsten, um auf einen Zweibrennstoffmischbetrieb umsteigen zu können. Der damit einhergehende Bauaufwand hält sich in engen Grenzen.The Brennstoffzumesseinrichtung according to the present invention is particularly suitable to be additionally grown in conventional internal combustion engines. Thus, commercial vehicles and e.g. Retrofit buses with such a metering device in order to change to a two-fuel mixing operation can. The associated construction costs are kept within narrow limits.
Des weiteren ist an der Unterseite des Druckuniversalbehälters bevorzugtermaßen eine Universalmischdüse vorgesehen, an der von unten kommend alle in den Druckmischbehälter mündenden Füll- und Rücklaufleitungen angeschlossen sind. Damit ist eine kontinuierliche Durchmischung der beiden spezifisch ungleich schweren Kraftstoffe gewährleistet.Furthermore, a universal mixing nozzle is preferably provided on the underside of the universal pressure container, at which coming from below all filling and return lines opening into the pressure mixing container are connected. This ensures a continuous mixing of the two specifically unequal heavy fuels.
Zur weiteren Erläuterung der Erfindung wird auf weitere Unteransprüche, die nachfolgende Beschreibung und die Zeichnung verwiesen. In der Zeichnung sind schematisch mit entsprechender Beschriftung die Anlagenkomponenten dargestellt. Die Fig. 1 und 2 zeigen jeweils ein Anlagenschema, wobei aus Fig. 2 näher der Druckmischbehälter hervorgeht. In der Fig. 1 ist allgemein mit 1 die Brennstoffzumesseinrichtung veranschaulicht, die einen LPG-Tank 2, der mit einem relativ geringen Überdruck beaufschlagt ist und einen Dampfdruckraum 2.1 umfasst, und einen Dieseltank 3 aufweist. Über lastabhängig gesteuerte Dosierpumpen 4 und 5 und über Rückschlagventile 6 und 7 gelangt der Kraftstoff zunächst (unter Umgehung einer Hochdruckpumpe 8) über den Strang 9 zu einem Druckmischbehälter 11. Dort werden die Kraftstoffe aus LPG und Diesel gemischt, wobei innerhalb des Druckbehälters 11 ein Dampfdruckpufferraum 12 ausgebildet ist. Im Einzelnen nicht näher dargestellt ist innerhalb des Dampfdruckpufferraumes 12 ein Drucksensor vorgesehen, der bei Überschreiten eines einstellbaren Überdruckes die Leitung 13 freigibt, die ihrerseits zu dem Dampfdruckraum 2.1 des LPG-Tanks 2 hin öffnet.To further explain the invention, reference is made to further subclaims, the following description and the drawings. In the drawing, the system components are shown schematically with appropriate labeling. FIGS. 1 and 2 each show a system diagram, with FIG. 2 showing more closely the pressure mixing container. In FIG. 1, the fuel metering device, which comprises an LPG tank 2, which is acted upon by a relatively low overpressure and comprises a vapor pressure chamber 2.1, and a diesel tank 3, is generally illustrated at 1. About load-dependent controlled metering pumps 4 and 5 and check valves 6 and 7, the fuel passes first (bypassing a high pressure pump 8) via the strand 9 to a pressure mixing vessel 11. There, the fuels of LPG and diesel are mixed, wherein within the pressure vessel 11, a vapor pressure buffer room 12 is formed. Specifically, not shown in detail, a pressure sensor is provided within the vapor pressure buffer chamber 12, which releases the line 13 when an adjustable overpressure is exceeded, which in turn opens to the vapor pressure chamber 2.1 of the LPG tank 2 out.
Von dem Dampfdruckbehälter 11 gelangt das Kraftstoffgemisch über die Leitung 14 und die schon erwähnte Hochdruckpumpe 8 (z.B. mit einem Betriebsdruck von 1.600 bar) zum allgemein mit 15 bezifferten Einspritzsystem einer Brennkraftmaschine z.B. eines LKW's. Nicht verbrauchter (Misch)-Kraftstoff kann über die Leitung 16 und das Bypassventil 10 wiederum dem Dampfdruckpufferraum 12 des Druckmischbehälters 11 zugeführt werden.From the vapor pressure vessel 11, the fuel mixture passes via the line 14 and the already mentioned high-pressure pump 8 (for example with an operating pressure of 1,600 bar) to the injection system of an internal combustion engine, generally designated 15. a truck. Unconsumed (mixed) fuel can in turn be supplied via the line 16 and the bypass valve 10 to the vapor pressure buffer chamber 12 of the pressure mixing tank 11.
An der Unterseite des Druckzumischbehälters 11 ist eine Universalmischdüse 17 vorgesehen, an der von unten kommend alle in den Druckmischbehälter 11 eingehenden Füll- und Rücklaufleitungen angeschlossen sind. Dadurch ist eine Verwirbe- lung im Druckmischbehälter 11 bei laufender Brennkraftmaschine zu vollziehen. Nach Stillstandzeiten kann die Brennkraftmaschine mit Dieselkraftstoff gestartet werden. On the underside of the Druckzumischbehälters 11 a universal mixing nozzle 17 is provided at the coming from below all incoming in the pressure mixing tank 11 filling and return lines are connected. As a result, a turbulence in the pressure mixing tank 11 is to be carried out while the internal combustion engine is running. After downtime, the engine can be started with diesel fuel.

Claims

Patentansprüche: claims:
1. Brennstoffzumesseinrichtung (1) für insbesondere eine selbstzündende, luftverdichtende Brennkraftmaschine mit einer ersten Kraftstoffpumpe (5) zur Förderung eines ersten Kraftstoffes wie einen Dieselkraftstoff sowie mit einer zweiten Kraftstoffpumpe (4) zur Zuführung eines zweiten Kraftstoffes, insbesondere eines Liqui- fied-Petroleum-Gas (LPG)-Kraftstoffes, wobei der erste Kraftstoff und der zweite Kraftstoff jeweils einem Tank (2, 3) entnehmbar und einem Druckmischbehälter (1 1 ) aufgebbar sind, wobei aus dem Druckmischbehälter (11) ein Mischkraftstoff über eine Hochdruckpumpe (8) dem Einspritzsystem (15) der Brennkraftmaschine zuführbar ist, und wobei das Einspritzsystem (15) eine von einem Druck- und Bypass- ventil gesteuerte Rückführleitung (10) aufweist, über die im Einspritzsystem (15) ü- berschüssiger Mischkraftstoff dem Druckmischbehälter (11 ) zuführbar ist, dadurch gekennzeichnet, dass der Druckmischbehälter (11) einen Dampfdruckpufferraum (12) aufweist, der an eine Dampfrückführleitung anschließbar ist, die in den Dampfdruckraum (2.1 ) des Kraftstofftankes (2) des zweiten Kraftstoffes mündet. 1. A fuel metering device (1) for in particular a self-igniting, air-compressing internal combustion engine having a first fuel pump (5) for conveying a first fuel such as a diesel fuel and a second fuel pump (4) for supplying a second fuel, in particular a liquefied petroleum Gas (LPG) fuel, wherein the first fuel and the second fuel in each case a tank (2, 3) removable and a pressure mixing vessel (1 1) are aufbar, wherein from the pressure mixing vessel (11) a mixed fuel via a high-pressure pump (8) the Injection system (15) of the internal combustion engine can be supplied, and wherein the injection system (15) controlled by a pressure and bypass valve return line (10) via which in the injection system (15) surplus superfluous fuel to the pressure mixing vessel (11) can be fed , characterized in that the pressure mixing vessel (11) has a vapor pressure buffer space (12), d it is connectable to a vapor return line, which opens into the vapor pressure chamber (2.1) of the fuel tank (2) of the second fuel.
2. Brennstoffzumesseinrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der zweite Kraftstoff über ein Tauchrohr und ein Magnetventil über eine selbstansaugende, außen liegende kalibrierte, lastabhängig und von einem Füllstandssensor gesteuerte Kraftstoffpumpe (4) dem Druckmischbehälter (11) zuführbar ist.2. Brennstoffzumesseinrichtung according to claim 1, characterized in that the second fuel via a dip tube and a solenoid valve via a self-priming, external calibrated, load-dependent and controlled by a level sensor fuel pump (4) to the pressure mixing vessel (11) can be fed.
3. Brennstoffzumesseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der erste Kraftstoff über eine außen liegende, selbstansaugende, kalibrierte, lastabhängig und von einem Füllstandsensor gesteuerte Kraftstoffpumpe (5) dem Druckmischbehälter zuführbar ist.3. Brennstoffzumesseinrichtung according to claim 1 or 2, characterized in that the first fuel via an external, self-priming, calibrated, load-dependent and controlled by a level sensor fuel pump (5) is supplied to the pressure mixing container.
4. Brennstoffzumesseinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Druckmischbehälter (11) mit zumindest zwei Füllstandssensoren versehen ist, die einen minimalen und einen maximalen Füllstand steuern.4. Brennstoffzumesseinrichtung according to one of claims 1 to 3, characterized in that the pressure mixing container (11) is provided with at least two level sensors, which control a minimum and a maximum level.
5. Brennstoffzumesseinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Druckmischbehälter (11 ) einen Drucksensor aufweist, der mit einer Steuereinrichtung in Verbindung steht, um die Zuführung des zweiten Kraftstoffes bei einer Funktionsstörung oder bei nicht mehr ausreichend vorgehaltenem zweiten Kraftstoff abzuschalten.5. Brennstoffzumesseinrichtung according to one of claims 1 to 4, characterized in that the pressure mixing container (11) has a pressure sensor which is in communication with a control device to switch off the supply of the second fuel in a malfunction or no longer sufficiently held second fuel ,
6. Brennstoffzumesseinrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Druckmischbehälter (1 1 ) einen Temperatursensor aufweist, der mit einer Steuereinrichtung in Verbindung steht, die bei Überschreiten einer vor- gebbaren Maximaltemperatur die Kraftstoffzuführung aus dem LPG-Kraftstofftank abschaltet.6. Brennstoffzumesseinrichtung according to any one of claims 1 to 5, characterized in that the pressure mixing container (1 1) has a temperature sensor which is in communication with a control device which, when exceeding a maximum fuel temperature shuts off the fuel supply from the LPG fuel tank.
7. Brennstoffzumesseinrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass dem Druckmischbehälter (1 1 ) ein Sicherheitsventil zugeordnet ist, das mit einer Steuereinrichtung in Wirkverbindung steht, die bei Überschreiten eines vorgebbaren Druckes die Dampf rücklaufleitung (13) in den Tank (2) des zweiten Kraftstoffes öffnet.7. Brennstoffzumesseinrichtung according to any one of claims 1 to 6, characterized in that the pressure mixing tank (1 1) is associated with a safety valve, which is in operative connection with a control device which, when a predetermined pressure is exceeded, the steam return line (13) into the tank (13). 2) of the second fuel opens.
8. Brennstoffzumesseinrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass eine Universalmischdüse an der Unterseite des Druckmischbehälters (11) vorgesehen ist, an der von unten kommend alle in den Druckmischbehälter (11 ) eingehenden Füll- und Rücklaufleitungen angeschlossen sind. 8. Brennstoffzumesseinrichtung according to one of claims 1 to 7, characterized in that a universal mixing nozzle on the underside of the pressure mixing vessel (11) is provided at the coming from below all in the pressure mixing vessel (11) incoming filling and return lines are connected.
PCT/EP2009/009268 2008-12-29 2009-12-24 Fuel metering device for an internal combustion engine WO2010076004A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008063278.3 2008-12-29
DE102008063278A DE102008063278B4 (en) 2008-12-29 2008-12-29 Brennstoffzumesseinrichtung for an internal combustion engine

Publications (1)

Publication Number Publication Date
WO2010076004A1 true WO2010076004A1 (en) 2010-07-08

Family

ID=41818949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/009268 WO2010076004A1 (en) 2008-12-29 2009-12-24 Fuel metering device for an internal combustion engine

Country Status (2)

Country Link
DE (1) DE102008063278B4 (en)
WO (1) WO2010076004A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108343534A (en) * 2018-04-09 2018-07-31 西华大学 A kind of activity control compression-ignition engine variable fuel feed system
CN110735737A (en) * 2018-07-20 2020-01-31 罗伯特·博世有限公司 Storage tank, fuel delivery device and method for regulating the pressure in a storage tank
US20220298980A1 (en) * 2021-03-22 2022-09-22 Hyundai Motor Company Apparatus and method for charging lpg fuel of bi-fuel vehicle

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010024635A1 (en) 2010-06-22 2011-12-22 A. Luhmann Gmbh Brennstoffzumesseinrichtung for an internal combustion engine
NL2006542C2 (en) 2011-04-05 2012-10-08 Vialle Alternative Fuel Systems Bv DIESEL ENGINE FOR LPG-DIESEL-MIXTURE.
ITBO20110192A1 (en) * 2011-04-13 2012-10-14 Marco Ciaccini POWER SUPPLY SYSTEM FOR ENDOTHERMAL MOTORS WITH SPONTANEOUS IGNITION BY LIQUEFIED PETROLEUM GAS (LPG)
DE102011082039A1 (en) * 2011-09-02 2013-03-07 Man Diesel & Turbo Se Reciprocating internal combustion engine and method for operating a reciprocating internal combustion engine
AU2014361752B2 (en) * 2013-12-12 2017-12-07 Mosaic Technology Development Pty Ltd Vehicle fuel system
EP3168445B1 (en) 2015-11-16 2019-05-22 Krzysztof Lapinski Dual fuel system for powering combustion engines
DE102016206106A1 (en) * 2016-04-12 2017-10-12 Hydrogenious Technologies Gmbh Storage device for hydrogen carrier medium, system comprising such a storage device and method for storing hydrogen carrier medium
DE102018216176A1 (en) * 2018-09-21 2020-03-26 Robert Bosch Gmbh Fuel delivery device for an internal combustion engine
CH716420A1 (en) * 2019-07-18 2021-01-29 Liebherr Machines Bulle Sa Method for conditioning a liquid fuel gas for high pressure injection into an internal combustion engine.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6035837A (en) * 1998-11-06 2000-03-14 Siemens Automotive Corporation Bi-fuel liquid injection system for an internal combustion engine
DE102004011414A1 (en) 2003-10-05 2005-04-28 Karlheinrich Winkelmann Internal combustion engine has fuel mixture during engine running created continuously in dosing and mixing valve and mixing ratio of fuels can be simultaneously influenced through control unit
GB2407620A (en) * 2003-07-29 2005-05-04 Thomas Tsoi Hei Ma Vehicle direct-injection i.c. engine fuelled by a premixed solution of LPG and gasoline
WO2009098728A1 (en) * 2008-02-06 2009-08-13 Icomet Spa System for supply of lpg/ammonia for direct-injection petrol or diesel engines

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0388957A (en) * 1989-08-22 1991-04-15 New Zealand Government Fuel feeder and controller of compressed ignition engine
US6711893B2 (en) * 2001-03-27 2004-03-30 Toyota Jidosha Kabushiki Kaisha Fuel supply apparatus for an internal combustion engine
USRE45413E1 (en) * 2005-11-26 2015-03-17 Exen Holdings, Llc Multi fuel co-injection system for internal combustion and turbine engines
WO2008036999A1 (en) * 2006-09-25 2008-04-03 Dgc Industries Pty Ltd A dual fuel system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6035837A (en) * 1998-11-06 2000-03-14 Siemens Automotive Corporation Bi-fuel liquid injection system for an internal combustion engine
GB2407620A (en) * 2003-07-29 2005-05-04 Thomas Tsoi Hei Ma Vehicle direct-injection i.c. engine fuelled by a premixed solution of LPG and gasoline
DE102004011414A1 (en) 2003-10-05 2005-04-28 Karlheinrich Winkelmann Internal combustion engine has fuel mixture during engine running created continuously in dosing and mixing valve and mixing ratio of fuels can be simultaneously influenced through control unit
WO2009098728A1 (en) * 2008-02-06 2009-08-13 Icomet Spa System for supply of lpg/ammonia for direct-injection petrol or diesel engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108343534A (en) * 2018-04-09 2018-07-31 西华大学 A kind of activity control compression-ignition engine variable fuel feed system
CN108343534B (en) * 2018-04-09 2023-08-18 西华大学 Variable fuel supply system of active control compression ignition engine
CN110735737A (en) * 2018-07-20 2020-01-31 罗伯特·博世有限公司 Storage tank, fuel delivery device and method for regulating the pressure in a storage tank
CN110735737B (en) * 2018-07-20 2023-10-20 罗伯特·博世有限公司 Storage tank, fuel delivery device and method for regulating pressure in storage tank
US20220298980A1 (en) * 2021-03-22 2022-09-22 Hyundai Motor Company Apparatus and method for charging lpg fuel of bi-fuel vehicle
US11761389B2 (en) * 2021-03-22 2023-09-19 Hyundai Motor Company Apparatus and method for charging LPG fuel of bi-fuel vehicle

Also Published As

Publication number Publication date
DE102008063278A1 (en) 2010-07-01
DE102008063278B4 (en) 2011-01-20

Similar Documents

Publication Publication Date Title
DE102008063278B4 (en) Brennstoffzumesseinrichtung for an internal combustion engine
EP2791490B1 (en) Fuel system
EP2126323B1 (en) Device for feeding a liquid additive into an internal combustion engine
DE10146051B4 (en) Fuel direct injection
EP2459865B1 (en) High pressure injection system having fuel cooling from low pressure region
EP2115292B1 (en) Feed device for a liquid additive for an internal combustion engine
EP2635792A1 (en) High-pressure fuel pump for an internal combustion engine having direct injection
EP2643183A2 (en) Tank arrangement having a mechanical pressure regulator, and vehicle
DE102006054463A1 (en) Bivalent, spark-ignition internal combustion engine i.e. four-cylinder engine, operating method, involves injecting liquid and gaseous fuel in selected operating area of engine and implementing operation of engine with fuel
DE102015208415A1 (en) Refueling with two fuels
DE102011010508B4 (en) Method and device for detecting the quality of fuel in a fuel tank of an internal combustion engine
DE102010024635A1 (en) Brennstoffzumesseinrichtung for an internal combustion engine
DE10361665B4 (en) Gasoline direct injection system
DE102016226316B4 (en) LPG tank cooling system of a dual fuel vehicle
DE102010040453A1 (en) Exhaust gas aftertreatment system and method for metering a medium into the exhaust gas line of an internal combustion engine
EP1689998B1 (en) Device for feeding fuel from a reservoir to an internal combustion engine and method for detecting pressure
DE102016124520B4 (en) LPG filling system of a bi-fuel vehicle
DE10144195B4 (en) Method for operating a fuel injection system, and fuel injection system for this purpose
DE102015014402A1 (en) Method and device for generating a fuel mixture for internal combustion engines
DE102016101018B4 (en) Fuel supply system and control unit
DE102011076669A1 (en) Fuel injection system i.e. common-rail injection system, for injecting diesel fuel in self-ignition internal combustion engine, has emulsification device arranged between low-pressure system and high-pressure system
DE202007011214U1 (en) Multi-fuel engine
WO2020064482A1 (en) Injection system for an internal combustion engine
DE102017220261A1 (en) Fuel delivery device for an internal combustion engine
DE102018217453A1 (en) Fuel pump

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09808933

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 09808933

Country of ref document: EP

Kind code of ref document: A1