[go: up one dir, main page]

DE102007028816A1 - IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves - Google Patents

IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves Download PDF

Info

Publication number
DE102007028816A1
DE102007028816A1 DE102007028816A DE102007028816A DE102007028816A1 DE 102007028816 A1 DE102007028816 A1 DE 102007028816A1 DE 102007028816 A DE102007028816 A DE 102007028816A DE 102007028816 A DE102007028816 A DE 102007028816A DE 102007028816 A1 DE102007028816 A1 DE 102007028816A1
Authority
DE
Germany
Prior art keywords
fuel
internal combustion
combustion engine
engine
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE102007028816A
Other languages
German (de)
Inventor
Jacek Marenin
Karlheinrich Winkelmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE102007028816A priority Critical patent/DE102007028816A1/en
Publication of DE102007028816A1 publication Critical patent/DE102007028816A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0665—Tanks, e.g. multiple tanks
    • 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
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0694—Injectors operating with a plurality of fuels
    • 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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0287—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers characterised by the transition from liquid to gaseous phase ; Injection in liquid phase; Cooling and low temperature storage
    • 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
    • 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
    • F02D19/066—Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
    • 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

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)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Vorrichtung zur Einbringung von Flüssiggas in Flüssigphase (11) in eine Verbrennungskraftmaschine basierend auf einem Ottomotor mit Einspritzung eines Ottokraftstoffes der bei Normaldruck und Normaltemperatur flüssig ist (Normaldruckottokraftstoff) (21) in den Ansaugkanal (43) vor die Einlassventile (44) der Verbrennungskraftmaschine aufweisend einen Flüssiggastank (1), eine, mit diesem in Verbindung stehende, über wenigstens eine Kraftstoffpumpe (12) und eine Kraftstoffvorlaufleitung (3) mit Kraftstoff beschickte Vorrichtung zur Einbringung von Kraftstoff (4) und eine Kraftstoffrücklaufleitung (5) mit einem Kraftstoffdruckregler (6) zum Flüssiggastank (1) hin, dadurch gekennzeichnet, dass jedem Zylinder der Verbrennungskraftmaschine, unabhängig davon, ob diese monovalent ausschließlich mit Flüssiggas in Flüssigphase (11) oder bivalent, das heißt wahlweise mit Flüssiggas in Flüssigphase (11) oder einem Normaldruckottokraftstoff (21) betrieben wird, nur ein Kraftstoffeinspritzventil (42) zugeordnet ist, welches an den originalen Einspritzpunkten des Basisottomotors positioniert ist, welche Einspritzventile (42) dementsprechend von nur einer Kraftstoffrail (41) mit Kraftstoff beschickt werden und dass die Kraftstoffrail (41) über eine Kraftstoffrücklaufleitung (10) mit...contraption for the introduction of LPG in liquid phase (11) in an internal combustion engine based on a gasoline engine with injection of a petrol which at normal pressure and Normal temperature liquid is (normal pressure pilot fuel) (21) in the intake passage (43) having the intake valves (44) of the internal combustion engine a liquefied gas tank (1), one associated with it, via at least one fuel pump (12) and a fuel supply line (3) fed with fuel Device for introducing fuel (4) and a fuel return line (5) with a fuel pressure regulator (6) to the liquefied gas tank (1), thereby characterized in that each cylinder of the internal combustion engine, independently of whether these monovalent exclusively with LPG in liquid phase (11) or bivalent, that is optionally with LPG in liquid phase (11) or a normal pressure pilot fuel (21), only a fuel injection valve (42) is associated, which at the original injection points of the base engine is positioned, which injectors (42) accordingly of only one fuel rail (41) be fueled and that the fuel rail (41) about a fuel return line (10) with ...

Figure 00000001
Figure 00000001

Description

Stand der TechnikState of the art

Die Erfindung beschreibt eine Vorrichtung zur Einbringung von Flüssiggas in Flüssigphase in eine Verbrennungskraftmaschinen, basierend auf einem Ottomotor mit Einspritzung eines Ottokraftstoffes der bei Normaldruck und Normaltemperatur flüssig ist (Normaldruckottokraftstoff) in den Ansaugkanal vor die Einlassventile der Verbrennungskraftmaschine.The Invention describes a device for introducing LPG in liquid phase in an internal combustion engine, based on a gasoline engine with injection of a petrol which at normal pressure and Normal temperature liquid is (normal pressure pilot fuel) into the intake port before the intake valves the internal combustion engine.

Stand der Technik bei der Einbringung von Flüssiggas in Flüssigphase bei Ottomotoren sind Systeme, die zusätzlich zu einem System zur Einspritzung von Ottokraftstoff der bei Normaldruck flüssig ist (Normaldruckottokraftstoff), wie Benzin oder Ethanol, einschließlich der zugehörigen Kraftstoffzuführungseinrichtung, wie Tank, Kraftstoffpumpe, Kraftstoffzuführungsleitung, Kraftstoffdruckregler, ein zweites, paralleles Einspritzsystem, mit eigener Flüssiggasrail und Flüssiggaseinspritzventilen speziell für den Kraftstoff Flüssiggas, aufweisen, das mit einer eigenen, aus einem Flüssiggastank gespeisten, Kraftstoffzuführungseinrichtung, einschließlich Kraftstoffzuführungsleitung versehen ist und auch eine eigene Kraftstoffrücklaufleitung besitzt, welche Flüssiggaseinspritzventile nahe den Einspritzventilen für den Normaldruckottokraftstoff im Ansaugkrümmer der Verbrennungskraftmaschine positioniert werden müssen.was standing the technique of introducing LPG in liquid phase In gasoline engines are systems that in addition to a system for Injection of petrol which is liquid at normal pressure (Normaldruckottokraftstoff), such as gasoline or ethanol, including the associated Fuel supply device, such as tank, fuel pump, fuel supply line, fuel pressure regulator, a second, parallel injection system, with its own liquid gas rail and LPG injection valves especially for the Fuel LPG, equipped with its own, fed from a liquefied gas tank, fuel supply device, including Fuel supply line is provided and also has its own fuel return line, which LPG injectors near the injectors for the normal pressure fuel in the intake manifold of the internal combustion engine must be positioned.

Das Flüssiggaskraftstoffsystem arbeitet analog dem Einspritzsystem für Normaldruckottokraftstoffe. Eine im Flüssiggastank befindliche Kraftstoffpumpe drückt das flüssige Flüssiggas mit einem flüssiggasspezifischen Betriebsdruck, der sich aus dem Verdampfungsdruck des Flüssiggases plus dem Regeldruck des Druckreglers im Kraftstoffrücklauf zusammensetzt, zu den Flüssiggaseinspritzventilen, die von dem Flüssiggassteuergerät angesteuert werden. Überschüssiges Flüssiggas wird über eine Rücklaufleitung zum Flüssiggastank zurückbefördert. Der im Flüssiggaskraftstoffkreislauf installierte Druckregler stellt den Systemdruck ein. Das Flüssiggassteuergerät verwendet die von der Einspritzregelung des Normaldruckkraftstoffes erzeugten und den Einspritzventilen für den Normaldruckkraftstoff zugeleiteten Signale als Eingangssignale für seine eigenen Programme mit denen es die Flüssiggaseinspritzventile steuert.The LPG fuel system works in the same way as the injection system for atmospheric pressure fuels. One in the liquefied gas tank located fuel pump presses the liquid LPG with a liquid gas specific Operating pressure resulting from the evaporation pressure of the liquefied gas plus the control pressure of the pressure regulator in the fuel return, to the LPG injection valves, the controlled by the LPG control unit become. Excess liquid gas will over a return line to the liquefied gas tank conveyed back. Of the in the liquefied petroleum gas cycle installed pressure regulator adjusts the system pressure. The LPG control unit is used those generated by the injection control of the normal pressure fuel and the injectors for the normal pressure fuel fed signals as inputs for his own programs with which it controls the LPG injection valves.

Die Nachteile dieser Systeme liegen zum einen in ihrem Bauaufwand und im zusätzlichen Bauraumbedarf. Es muß die Ansaugbrücke mit zusätzlichen Bohrungen zur Zuführung des Flüssiggases versehen werden, die zusätzliche Einspritzrail und die zusätzlichen Einspritzventile müssen untergebracht werden. Zum anderen wird bei einem bekannten Einspritzsystem durch die Notwendigkeit, die Flüssiggaseinspritzventile über eine Verbindungsleitung an die zugehörigen Ansaugkanäle anzubinden, automatisch eine regelungstechnisch ungünstige „Totstrecke" erzeugt, die die Präzision der Einspritzsteuerung ungünstig beeinflusst.The Disadvantages of these systems are on the one hand in their construction costs and in the additional Space requirement. It must be the Intake with additional Drilling holes provided the liquefied gas be that extra Injection rail and the additional Injectors need be housed. On the other hand, in a known injection system by the need to inject the LPG via a Connecting line to the associated intake ports automatically create a control technically unfavorable "Totstrecke" that the precision the injection control unfavorable affected.

Aufgabe der Erfindung ist es, Flüssiggaseinspritzsysteme der eingangs genannten Art zu vereinfachen und durch die, in den abhängigen Ansprüchen genannten, vorteilhaften Ausführungen dahingehend zu verbessern, dass die genannten Nachteile behoben werden.task The invention is LPG injection systems simplify the type mentioned above and by, in the dependent Claims mentioned, advantageous embodiments to be improved so that the disadvantages mentioned above become.

Diese Aufgabe wird durch eine Vorrichtung und ein Verfahren mit den Merkmalen des Anspruchs 1 einschließlich seiner vorteilhaften Ausführungsformen in den abhängigen Ansprüchen gelöst, indem die Nutzung mindestens der originalen Einspritzpunkte oder gar der Einspritzanlage zur Einspritzung von Normaldruckkraftstoffen zur Einspritzung von Flüssiggas in flüssigem Aggregatzustand den Wegfall zusätzlicher Kraftstoffzuführungsbohrungen einschließlich der regelungstechnisch ungünstigen Totstrecke und, bei Nutzung der originalen Einspritzventile und Einspritzrail, der nachträglich installierten Bauteile Flüssiggaseinspritzventile und Flüssiggasrail mit ihren hydraulischen und elektrischen Verbindungsleitungen ermöglicht. Das spart Montageaufwand, Bauteile und Platz im Motorraum, eliminiert gleichzeitig potentielle Fehlerquellen und erhöht die Präzision der Kraftstoffeinspritzung.These The object is achieved by a device and a method with the features of claim 1 inclusive its advantageous embodiments in the dependent claims solved, by using at least the original injection points or even the injection system for the injection of normal pressure fuels for the injection of liquid gas in liquid State of aggregation the elimination of additional Fuel supply holes including the technically unfavorable Totstrecke and, when using the original injectors and Injection rail, the later installed components LPG injectors and liquefied gas rail enabled with their hydraulic and electrical connection lines. This saves assembly, components and space in the engine compartment, eliminates simultaneously potential sources of error and increases the precision of the fuel injection.

Ein weiterer Vorteil der vorliegenden Erfindung ist, zusätzlich zu der oben erwähnten Vermeidung einer Totstrecke, auch die optimale Position der Einspritzventile. Nachträglich und zusätzlich montierte Einspritzventile zur Einspritzung von Flüssiggas können nur suboptimal positioniert sein, da die werksmäßig eingebauten Einspritzventile zur Einspritzung des Normaldruckottokraftstoffes den optimalen Platz im Zuführungssystem einnehmen. In der Regel ragen werksseitig eingebaute Elektromagnetventile so in das Saugrohr der Verbrennungskraftmaschine, dass der Einspritzstrahl im Bereich vor oder auf den Teller des/der Einlassventils/e eingespritzt wird. Diese optimale Position bleibt zusätzlich eingebauten Flüssiggaseinspritzventilen verwehrt.One Another advantage of the present invention is, in addition to the above mentioned Avoiding a dead-end, also the optimal position of the injectors. later and additionally mounted injectors for injection of LPG can only be positioned suboptimal, since the factory installed injectors for injection of normal pressure fuel the optimum place in the delivery system taking. As a rule, factory installed solenoid valves protrude so in the intake manifold of the internal combustion engine that the injection jet is injected in the area in front of or on the plate of the intake valve (s). This optimal position remains additionally installed LPG injection valves denied.

Im Gegensatz zu dem aktuellen Stand der Technik bei den Kraftstoffzuführungssystemen für Normaldruckottokraftstoff, insbesondere Benzin, die mittlerweile ohne Kraftstoffrücklauf arbeiten, kann bei dem temperatursensibleren Kraftstoff Flüssiggas auf einen kühlenden Kraftstoffkreislauf der die Einspritzventile und die Einspritzrail mit einbezieht nicht verzichtet werden. Deshalb ist es notwendig bei der Verwendung des Kraftstoffes Flüssiggas in Flüssigphase, wo nicht vorhanden, die erfindungsgemäße Herstellung einer Durchströmung vorzugsweise quer durch die Kraftstoffrail, die einen stetigen Fluss kühlenden Kraftstoffes an den Einspritzventilen vorbei sicherstellt.In contrast to the current state of the art in the fuel supply systems for Normaldruckottokraftstoff, especially gasoline, which now operate without fuel return, in the temperature-sensitive fuel LPG on a cooling fuel circuit which includes the injectors and the injection rail can not be waived. Therefore, it is necessary when using the fuel liquid gas in liquid phase, where not present, the inventive production of a flow preferably transversely through the fuel rail, which ensures a steady flow of cooling fuel past the injectors.

Das Verfahren wird im Folgenden anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The Method will be described below with reference to the illustrated in the drawing embodiment explained in more detail.

1 zeigt schematisch ein erfindungsgemäßes Kraftstoffzuführungssystem mit einem Druckregelventil mit Verdampfungsdruckkompensation 6 im Kraftstoffrücklauf 5, einer Kraftstoffeinspritzsteuerung 8 und einem Normaldruckkraftstofftank 2 als Reservetank des Systems. 1 schematically shows a fuel supply system according to the invention with a pressure control valve with evaporation pressure compensation 6 in the fuel return 5 , a fuel injection control 8th and a normal pressure fuel tank 2 as a reserve tank of the system.

In 1 drückt aus einem Flüssiggastank 1 eine Kraftstoffpumpe 12 Flüssiggas aus der Flüssigphase 11, passierend eine Kühlvorrichtung 7 und ein Rückschlagventil 31 in die Kraftstoffrail 41. An die Kraftstoffrail 41 angekoppelt ist die Kraftstoffeinspritzventilgruppe 42 über die der Kraftstoff in die Ansaugkanäle 43 vor die Einlassventile 44 der Verbrennungskraftmaschine eingespritzt wird. Die Kraftstoffeinspritzventilgruppe 42 ist genau an den originalen Einspritzpunkten der Verbrennungskraftmaschine positioniert. Das größere, überschüssige Kraftstoffvolumen fließt durch die Kraftstoffrail 41 an den Kraftstoffeinspritzventilen 42 vorbei und führt dabei Wärme aus ihnen ab.In 1 pushes out of a liquefied gas tank 1 a fuel pump 12 Liquefied gas from the liquid phase 11 Passing a cooler 7 and a check valve 31 in the fuel rail 41 , To the fuel rail 41 coupled is the fuel injector group 42 about the fuel in the intake ports 43 in front of the inlet valves 44 the internal combustion engine is injected. The fuel injector group 42 is positioned exactly at the original injection points of the internal combustion engine. The larger, excess fuel volume flows through the fuel rail 41 at the fuel injection valves 42 passing by and removing heat from them.

Der mechanische Druckregler 6 hält im Zusammenspiel mit der Kraftstoffpumpe(n) 12 den Kraftstoffdruck vor den Kraftstoffeinspritzventilen 42 auf einem durch Federdruck vorgegebenen Druckniveau.The mechanical pressure regulator 6 keeps in interaction with the fuel pump (s) 12 the fuel pressure in front of the fuel injection valves 42 at a pressure level predetermined by spring pressure.

Das Rückschlagventil 31 hat die Funktion zu verhindern, dass nach dem Abstellen des Motors der Betriebsdruck vor den Einspritzventilen 42 in den Flüssiggastank entweicht.The check valve 31 Has the function to prevent after stopping the engine the operating pressure before the injectors 42 escapes into the liquefied gas tank.

Claims (7)

Vorrichtung zur Einbringung von Flüssiggas in Flüssigphase (11) in eine Verbrennungskraftmaschine basierend auf einem Ottomotor mit Einspritzung eines Ottokraftstoffes der bei Normaldruck und Normaltemperatur flüssig ist (Normaldruckottokraftstoff) (21) in den Ansaugkanal (43) vor die Einlassventile (44) der Verbrennungskraftmaschine aufweisend einen Flüssiggastank (1), eine, mit diesem in Verbindung stehende, über wenigstens eine Kraftstoffpumpe (12) und eine Kraftstoffvorlaufleitung (3) mit Kraftstoff beschickte Vorrichtung zur Einbringung von Kraftstoff (4) und eine Kraftstoffrücklaufleitung (5) mit einem Kraftstoffdruckregler (6) zum Flüssiggastank (1) hin, dadurch gekennzeichnet, dass jedem Zylinder der Verbrennungskraftmaschine, unabhängig davon, ob diese monovalent ausschließlich mit Flüssiggas in Flüssigphase (11) oder bivalent, das heißt wahlweise mit Flüssiggas in Flüssigphase (11) oder einem Normaldruckottokraftstoff (21) betrieben wird, nur ein Kraftstoffeinspritzventil (42) zugeordnet ist, welches an den originalen Einspritzpunkten des Basisottomotors positioniert ist, welche Einspritzventile (42) dementsprechend von nur einer Kraftstoffrail (41) mit Kraftstoff beschickt werden und dass die Kraftstoffrail (41) über eine Kraftstoffrücklaufleitung (10) mit einem als hydraulischer Widerstand fungierenden Kraftstoffdruckregler (6) mit dem Flüssiggastank (1) so verbunden ist, dass ein kontinuierlicher, vom aktuellen Kraftstoffbedarf der Verbrennungskraftmaschine unabhängiger, Kraftstofffluss durch die Kraftstoffrail (41) zustande kommt.Device for introducing liquid gas in liquid phase ( 11 ) in an internal combustion engine based on a gasoline engine with injection of a gasoline which is liquid at atmospheric pressure and normal temperature (normal pressure gasoline fuel) ( 21 ) in the intake channel ( 43 ) in front of the intake valves ( 44 ) of the internal combustion engine having a liquefied gas tank ( 1 ), one connected thereto, via at least one fuel pump ( 12 ) and a fuel supply line ( 3 ) Fuel-fed device for introducing fuel ( 4 ) and a fuel return line ( 5 ) with a fuel pressure regulator ( 6 ) to the liquefied gas tank ( 1 ), characterized in that each cylinder of the internal combustion engine, regardless of whether this monovalent exclusively with liquid gas in liquid phase ( 11 ) or bivalent, that is optionally with liquid gas in liquid phase ( 11 ) or a normal pressure fuel ( 21 ), only one fuel injector ( 42 ), which is positioned at the original injection points of the base engine, which injection valves ( 42 ) accordingly of only one fuel rail ( 41 ) are fueled and that the fuel rail ( 41 ) via a fuel return line ( 10 ) with a fuel pressure regulator acting as a hydraulic resistance ( 6 ) with the liquefied gas tank ( 1 ) is connected so that a continuous, independent of the current fuel consumption of the internal combustion engine, fuel flow through the fuel rail ( 41 ) comes about. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Verbrennungskraftmaschine die originale Kraftstoffrail (41) des Basisottomotors nutzt.Apparatus according to claim 1, characterized in that the internal combustion engine, the original fuel rail ( 41 ) of the base engine. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verbrennungskraftmaschine die originalen Kraftstoffeinspritzventile (42) des Basisottomotors nutzt.Method according to one of the preceding claims, characterized in that the internal combustion engine, the original fuel injection valves ( 42 ) of the base engine. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der hydraulische Widerstand (6) ein mechanisch arbeitendes Druckregelventil mit innerer Verdampfungsdruckkompensation ist.Method according to one of the preceding claims, characterized in that the hydraulic resistance ( 6 ) is a mechanical pressure regulating valve with internal evaporation pressure compensation. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein weiterer Kraftstofftank (2), für einen Ottokraftstoff der bei Normaldruck und Normaltemperatur flüssig ist (21), existiert.Method according to one of the preceding claims, characterized in that a further fuel tank ( 2 ), for a gasoline which is liquid at atmospheric pressure and normal temperature ( 21 ) exists. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zusätzliche Kraftstofftank (2) bei monovalentem Betrieb der Verbrennungskraftmaschine mit Flüssiggas in Flüssigphase (11) als Reservekraftstofftank genutzt wird.Method according to one of the preceding claims, characterized in that the additional fuel tank ( 2 ) in monovalent operation of the internal combustion engine with liquid gas in liquid phase ( 11 ) is used as a reserve fuel tank. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass die Förderleitung (24) eines Kraftstofftanks für Normaldruckottokraftstoffe (20), in die Kraftstoffrücklaufleitung (5) oder die Tankanschlussleitung (14) zum Flüssiggastank (1) hin geführt wird.Method according to claim 11, characterized in that the delivery line ( 24 ) of a fuel tank for normal pressure fuels ( 20 ), into the fuel return line ( 5 ) or the tank connection line ( 14 ) to the liquefied gas tank ( 1 ) is led out.
DE102007028816A 2006-11-23 2007-06-20 IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves Withdrawn DE102007028816A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102007028816A DE102007028816A1 (en) 2006-11-23 2007-06-20 IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006055687.9 2006-11-23
DE102006055687 2006-11-23
DE102007028816A DE102007028816A1 (en) 2006-11-23 2007-06-20 IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves

Publications (1)

Publication Number Publication Date
DE102007028816A1 true DE102007028816A1 (en) 2008-05-29

Family

ID=39326519

Family Applications (1)

Application Number Title Priority Date Filing Date
DE102007028816A Withdrawn DE102007028816A1 (en) 2006-11-23 2007-06-20 IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves

Country Status (1)

Country Link
DE (1) DE102007028816A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008053873A1 (en) * 2008-10-30 2010-05-06 Winkelmann, Karlheinrich, Dipl.-Ing. (TH) Internal combustion engine i.e. petrol engine, operating method for motor vehicle, involves adjusting evaporation pressure of fluid phase with turned-off engine at operating temperature in evaporation-critical position for starting engine
DE102008054191A1 (en) 2008-10-31 2010-07-01 Karim, Melike Device for operating internal combustion engine of vehicle, has liquefied petroleum gas supply control unit, where liquefied petroleum gas supply control unit is designed to activate opening of fuel rail
WO2010121306A1 (en) * 2009-04-20 2010-10-28 Dgc Industries Pty Ltd A dual fuel supply system for an indirect-injection system of a diesel engine
WO2011130792A1 (en) * 2010-04-20 2011-10-27 Dgc Industries Pty Ltd A dual fuel supply system for a direct-injection system of a diesel engine with off-board mixing
US8220439B2 (en) 2006-09-25 2012-07-17 DGC Industries Pty. Ltd. Dual fuel system
WO2013087264A1 (en) * 2011-12-16 2013-06-20 Robert Bosch Gmbh Fuel system
WO2013092347A1 (en) * 2011-12-20 2013-06-27 Continental Automotive Gmbh Method and device for controlling the fuel supply of an internal combustion engine operated with liquefied gas
WO2014193236A1 (en) * 2013-05-30 2014-12-04 Indopar B.V. A bi-fuel system and a method for operating such a system
DE102008024561B4 (en) * 2008-05-21 2015-01-08 Vialle Alternative Fuel Systems B.V. Method for operating an internal combustion engine
US9212643B2 (en) 2013-03-04 2015-12-15 Delia Ltd. Dual fuel system for an internal combustion engine

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8220439B2 (en) 2006-09-25 2012-07-17 DGC Industries Pty. Ltd. Dual fuel system
DE102008024561B4 (en) * 2008-05-21 2015-01-08 Vialle Alternative Fuel Systems B.V. Method for operating an internal combustion engine
DE102008053873A1 (en) * 2008-10-30 2010-05-06 Winkelmann, Karlheinrich, Dipl.-Ing. (TH) Internal combustion engine i.e. petrol engine, operating method for motor vehicle, involves adjusting evaporation pressure of fluid phase with turned-off engine at operating temperature in evaporation-critical position for starting engine
DE102008053873B4 (en) * 2008-10-30 2012-08-30 Vialle Alternative Fuel Systems B.V. Internal combustion engine and method for operating an internal combustion engine
DE102008054191A1 (en) 2008-10-31 2010-07-01 Karim, Melike Device for operating internal combustion engine of vehicle, has liquefied petroleum gas supply control unit, where liquefied petroleum gas supply control unit is designed to activate opening of fuel rail
WO2010121306A1 (en) * 2009-04-20 2010-10-28 Dgc Industries Pty Ltd A dual fuel supply system for an indirect-injection system of a diesel engine
WO2010121305A1 (en) * 2009-04-20 2010-10-28 Dgc Industries Pty Ltd A dual fuel supply system for an indirect-injection system of a diesel engine with off-board fuel mixing
CN102549251A (en) * 2009-04-20 2012-07-04 工业私人有限公司 A dual fuel supply system for an indirect-injection system of a diesel engine
US9765707B2 (en) 2009-04-20 2017-09-19 Dgc Industries Pty Ltd Dual fuel supply system for an indirect-injection system of a diesel engine
CN102549251B (en) * 2009-04-20 2016-02-03 工业私人有限公司 For the double fuel supply system of diesel motor indirect injection system
AU2010239143B2 (en) * 2009-04-20 2015-05-07 Dgc Industries Pty Ltd A dual fuel supply system for an indirect-injection system of a diesel engine
WO2011130792A1 (en) * 2010-04-20 2011-10-27 Dgc Industries Pty Ltd A dual fuel supply system for a direct-injection system of a diesel engine with off-board mixing
CN103987945A (en) * 2011-12-16 2014-08-13 罗伯特·博世有限公司 Fuel system
WO2013087264A1 (en) * 2011-12-16 2013-06-20 Robert Bosch Gmbh Fuel system
WO2013092347A1 (en) * 2011-12-20 2013-06-27 Continental Automotive Gmbh Method and device for controlling the fuel supply of an internal combustion engine operated with liquefied gas
US9212643B2 (en) 2013-03-04 2015-12-15 Delia Ltd. Dual fuel system for an internal combustion engine
WO2014193236A1 (en) * 2013-05-30 2014-12-04 Indopar B.V. A bi-fuel system and a method for operating such a system
US9581093B2 (en) 2013-05-30 2017-02-28 Indopar B.V. Bi-fuel system and a method for operating such a system

Similar Documents

Publication Publication Date Title
DE102007028816A1 (en) IC engine with dual fuel including liquid gas with one shared common rail and one set of injector valves
EP3292289B1 (en) Method for operating a water injection device for an internal combustion engine
DE102015208476A1 (en) Apparatus and method for injecting water for an internal combustion engine
EP3346120B1 (en) Water injection device of a combustion engine and method for operating same
DE102010050560A1 (en) High-pressure fuel pump for a direct injection internal combustion engine
EP2459865A1 (en) High pressure injection system having fuel cooling from low pressure region
DE102012113220A1 (en) Return fuel cooling system for an LPI vehicle and control method thereof
DE102011089254B4 (en) Method and device for controlling the fuel supply of an LPG-powered internal combustion engine
WO2012019707A1 (en) Internal combustion engine with liquid and gaseous fuel
EP2080888A2 (en) Automatic fuel detection
DE102014218632A1 (en) Fuel supply device, method for operating a fuel supply device and computer program product
DE10310147B9 (en) Method for supplying LPG to an internal combustion engine, fuel supply system and fuel supply unit
DE102020214434A1 (en) Fuel supply system and method of operating the fuel supply system with a split gas flow to increase the operating range of a gas pressure regulator
DE102008042604A1 (en) Fuel injection system for internal-combustion engine of vehicle, has suction tube injection valve for injecting fuel into suction tube, where injection valve is supplied with fuel via low pressure fuel pump or high pressure fuel pump
DE102017211826B3 (en) Device for injecting water for an internal combustion engine
DE69914069T2 (en) DEVICE AND METHOD FOR RETURNING THE FUEL FOR A DIRECT INJECTION SYSTEM
DE102015014402A1 (en) Method and device for generating a fuel mixture for internal combustion engines
DE102006001616A1 (en) Spark ignited piston internal combustion engine operating method for motor vehicle, involves pumping reserve fuel from fuel tank into gas tank, where fuel tank serves as reserve tank for petrol or normal pressure liquid fuel such as ethanol
DE102009029596B4 (en) Method for controlling an internal combustion engine
DE102017200254A1 (en) Method and apparatus for operating an internal combustion engine with dual fuel metering
DE102010053438A1 (en) Method for switching supply of e.g. petrol and natural gas to internal combustion engine of motor car, involves modifying supply of liquid and gaseous fuel such that fuel is uniformly supplied to engine
DE112022001691T5 (en) FUEL SYSTEM
DE102005026600B4 (en) Internal combustion engine
EP1293654A2 (en) Fuel injection system for an internal combustion engine
AT514107B1 (en) Fuel supply system

Legal Events

Date Code Title Description
8122 Nonbinding interest in granting licences declared
8139 Disposal/non-payment of the annual fee