EP0575887A1 - Injection device - Google Patents

Injection device Download PDF

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Publication number
EP0575887A1
EP0575887A1 EP93109661A EP93109661A EP0575887A1 EP 0575887 A1 EP0575887 A1 EP 0575887A1 EP 93109661 A EP93109661 A EP 93109661A EP 93109661 A EP93109661 A EP 93109661A EP 0575887 A1 EP0575887 A1 EP 0575887A1
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EP
European Patent Office
Prior art keywords
nozzle
injection
fuel
nozzle needle
pressure
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Granted
Application number
EP93109661A
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German (de)
French (fr)
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EP0575887B1 (en
Inventor
Reinhard Häfner
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Caterpillar Motoren GmbH and Co KG
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Krupp Mak Maschinenbau GmbH
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Publication of EP0575887A1 publication Critical patent/EP0575887A1/en
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    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/44—Valves, e.g. injectors, with valve bodies arranged side-by-side

Definitions

  • the invention relates to an injection device for internal combustion engines, in particular diesel engines with injection valves for fuel or ignition oil and highly compressed fuel gas.
  • the object of the invention is to provide an injection device for engines with which a particularly favorable injection behavior can be achieved and the injection valves are to be accommodated in a small space.
  • the main advantages achieved with the invention are that the two injection nozzles are combined in one holder and thus an efficient injection system for fuel, gas and fuel or ignition oil is achieved with little space requirement. This is essentially achieved in that instead the large-brewing steel springs use a hydraulic load on the nozzle needles.
  • the diameter of the needles and the diameter of the control pistons can be managed with one and the same hydraulic closing pressure by suitable selection.
  • the fuel to be ignited is always injected in the direction where the ignition source is created by the ignition fuel. This contributes significantly to the good mixing of fuel and air.
  • the desire described in this way can generally hardly be met with two different injection nozzles and, up to now, has been very difficult to achieve with double nozzles or multiple nozzles.
  • the jet positions of gas nozzles and pre-injection nozzles which in turn can also be the main nozzle in pure diesel operation, are so directed that the jets meet spatially in a common plane and a circular line or distance line lying thereon.
  • the two injection nozzles are arranged side by side in a common nozzle holder which is combined with a segment having the double piston device and the corresponding pressure bores and channels via a threaded sleeve which is connected to a connecting element in which the supply channels are arranged.
  • the injection device essentially comprises, in a holder 1, two injection valves 2 and 3, which comprise nozzle needles 4 and 5 and open or close spray holes 36, 37 in nozzle element 35 and 34.
  • One injection valve 2 is for supplying fuel or ignition oil and the other injection valve 3 is designed to supply fuel gas into the cylinder.
  • the holder 1 is connected to a segment 8 via a threaded sleeve 9 with a connecting element 10.
  • this channel 11 and 12 are provided for the supply of a closing pressure S and a control pressure Z in the segment 8, in which the channels are continued.
  • the injection valve 3 has a double-piston device D, which is arranged coaxially to the nozzle needle 5 and can be acted upon by a closing pressure S via the channel 11 and by a control pressure Z via the channel 12.
  • the device D comprises a larger diameter piston 30 and a smaller diameter piston 31 which bears against the nozzle needle 5.
  • the channel 12 enters the control pressure Z, the channel 11 opening into a space 13 at the end of the larger piston 30. Further channels 14 are used to supply fuel gas to the valve 3, which enter an annular space 16 below the nozzle needle 5.
  • the further valve 2 for supplying fuel or ignition oil in the holder 1 comprises the nozzle needle 4, the head 17 of which dips into a space 18 which is connected to a channel 19, via which the nozzle needle 4 can be acted upon by a closing pressure S from the channel 11 .
  • a transverse channel 20 for example a milling, is provided in the parting plane between the connecting element 10 and the segment 8.
  • the supply of the fuel or ignition oil to the Valve 2 takes place in an annular space 21 via a further channel 23.
  • two nozzle needles 4 and 5 are shown.
  • the one nozzle needle 5 instead of the one nozzle needle 5, several of them, e.g. can be arranged concentrically around the nozzle needle 4.
  • the fuel gas which is prestressed under high pressure, flows through the two gas channels 14 into the annular space 16 of the nozzle 5 together with the nozzle needle and acts there on the shoulder 5a of the nozzle needle 5 with the aim of lifting it up.
  • the small piston 31, pressed by the larger piston 30, acts opposite the exhaust gas pressure G on the needle 5 under the closing pressure S supplied via the channel 11.
  • the space 18 above the nozzle needle 4 is connected to the closing pressure channel 11, for example through the transverse channel 20 with the channel 19, so that the needle 4 is held tightly on its seat 32 with respect to the gas pressure of the cylinder. Now the amount of pilot oil or normal Pumped amount of diesel through the channel 23 under the shoulder 4a of the nozzle needle 4, the pressure rising there will move the nozzle needle upward and the ignition oil injection process or the diesel fuel injection process takes place.
  • the ignition oil nozzles 34 and the gas nozzle 35 have spray holes 36 and 37 which are directed in a defined manner and which are each arranged largely uniformly distributed.
  • the gas jets 38 emerging from the spray holes 36 and the fuel jets 39 emerging from the spray holes 37 therefore meet in a common plane E on a circular line K in an area or at a point.
  • the center of the circle M lies between the two nozzle needles 4 and 5, so that the jets meet at approximately the same distance from this center M.

Abstract

The invention proposes an injection system in which two valves (2, 3) and nozzle needles (4, 5) are provided in a single holder (1), the valves and needles being subjected to hydraulic loading and controlled in accordance with the injection process without the use of screws and springs. The two nozzle needles (4, 5) of the valves (2, 3) can be acted upon by a common hydraulic closing pressure (S) which, on the one hand, acts via a double piston arrangement (D) on the nozzle needle (5) in one injection nozzle (35), that for combustion gas, and, on the other hand, acts directly on the nozzle needle (4) in the other injection nozzle (34), which is intended for fuel or ignitable oil. The two pistons (30, 31) of arrangement (D) are subjected to a defined control pressure (Z), which is superimposed on the closing pressure (S) and the combustion-gas pressure (G) during the injection process. The control pressure (Z) is used to move the one nozzle needle (5) into an open and closed position, and the other nozzle needle (4) can be acted upon, for the purpose of opening it counter to the closing pressure (S), by the fuel or ignitable oil fed in via the passage (23). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Einspritzeinrichtung für Brennkraftmaschinen, insbesondere Dieselmotoren mit Einspritzventilen für Kraftstoff bzw. Zündöl und hochverdichtetem Brenngas.The invention relates to an injection device for internal combustion engines, in particular diesel engines with injection valves for fuel or ignition oil and highly compressed fuel gas.

Es sind Ausführungen sowohl bei Zweitakt- als auch bei Viertaktmotoren bekannt, in denen hochverdichtetes Brenngas nahe dem Zünd-OT-Punkt durch Düsen eingespritzt wird, um von einem Zündölstrahl aus einer anderen Düse bzw. einem anderen Düsenteil gezündet zu werden.Designs are known for both two-stroke and four-stroke engines, in which highly compressed fuel gas is injected through nozzles near the ignition TDC point in order to be ignited by a jet of pilot oil from another nozzle or another part of the nozzle.

Aufgabe der Erfindung ist es, eine Einspritzeinrichtung für Motoren zu schaffen, mit dem ein besonders günstiges Einspritzverhalten erzielbar ist und wobei die Einspritzventile auf kleinem Raum unterzubringen sind.The object of the invention is to provide an injection device for engines with which a particularly favorable injection behavior can be achieved and the injection valves are to be accommodated in a small space.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weiter vorteilhafte Merkmale beinhalten die Unteransprüche.This object is achieved by the characterizing features of claim 1. Further advantageous features include the subclaims.

Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, daß die beiden Einspritzdüsen in einem Halter zusammengefaßt sind und somit bei wenig Raumbeanspruchung ein leistungsfähiges Einspritzsystem für Brenn-, Gas- und Kraftstoff- bzw. Zündöl erzielt wird. Dies wird im wesentlichen dadurch erreicht, daß statt der großbrauenden Stahlfedern eine hydraulische Belastung der Düsennadeln verwendet wird.The main advantages achieved with the invention are that the two injection nozzles are combined in one holder and thus an efficient injection system for fuel, gas and fuel or ignition oil is achieved with little space requirement. This is essentially achieved in that instead the large-brewing steel springs use a hydraulic load on the nozzle needles.

Das Problem, betriebssicher den sehr kurzen Zeitquerschnitt zu öffnen, den man braucht, um die richtige Gasmenge ausströmen zu lassen, wird dadurch gelöst, daß mit Hilfe einer gängigen, mit Steuerkanten behafteten Einspritzpumpe den hydraulischen Druck, der auf das Einspritzventil für den Gasbetrieb wirkt, durch ein Doppelkolbensystem abzubauen. Je nach notwendiger Steuerdauer wird der größere der beiden Doppelkolben, entsprechend der in dieser Zeit geförderten Steuermenge mehr oder weniger stark abgehoben, um dann bei Förderende der Steuerpumpe wieder zurückzufallen, um das Steuernadelventil der Gasdüse zu verschließen.The problem of reliably opening the very short time cross section that is required to let the correct amount of gas flow out is solved by using a common injection pump with control edges to reduce the hydraulic pressure that acts on the injection valve for gas operation. dismantled by a double piston system. Depending on the necessary control period, the larger of the two double pistons is more or less lifted off in accordance with the control quantity delivered during this time, in order then to fall back again at the end of the delivery of the control pump in order to close the control needle valve of the gas nozzle.

Um ein möglichst einfaches System für die hydraulische Belastung der beiden Nadeln zu finden, ist durch geeignete Auswahl der Durchmesser der Nadeln und der Durchmesser der Steuerkolben mit ein und demselben hydraulischen Schließdruck auszukommen.In order to find a system for the hydraulic loading of the two needles that is as simple as possible, the diameter of the needles and the diameter of the control pistons can be managed with one and the same hydraulic closing pressure by suitable selection.

Es hat sich weiterhin herausgestellt, daß es vorteilhaft ist, daß der zu entzündende Kraftstoff immer in die Richtung gespritzt wird, wo durch den Zündkraftstoff der Zündherd entsteht. Es trägt dies ganz wesentlich zur guten Vermischung von Kraftstoff und Luft bei. Der so geschilderte Wunsch kann in der Regel kaum mit zwei unterschiedlichen Einspritzdüsen und bisher nur sehr schwierig mit Doppeldüsen oder Mehrfachdüsen dargestellt werden. Erfindungsgemäß wird daher vorgeschlagen, daß die Strahllagen von Gasdüsen und Voreinspritzdüsen, die ihrerseits auch im reinen Dieselbetrieb Hauptdüse sein kann, so gelenkt werden, daß sich die Strahlen räumlich in einer gemeinsamen Ebene und einer darauf liegenden Kreislinie bzw. Abstandslinie treffen.It has also been found that it is advantageous that the fuel to be ignited is always injected in the direction where the ignition source is created by the ignition fuel. This contributes significantly to the good mixing of fuel and air. The desire described in this way can generally hardly be met with two different injection nozzles and, up to now, has been very difficult to achieve with double nozzles or multiple nozzles. According to the invention it is therefore proposed that the jet positions of gas nozzles and pre-injection nozzles, which in turn can also be the main nozzle in pure diesel operation, are so directed that the jets meet spatially in a common plane and a circular line or distance line lying thereon.

Die beiden Einspritzdüsen sind nebeneinander in einem gemeinsamen Düsenhalter angeordnet, der mit einem die Doppelkolbeneinrichtung sowie die entsprechenden Druckbohrungen und Kanäle aufweisendes Segment über eine Gewindehülse zusammengefaßt ist, die mit einem Anschlußelement, in dem die Zuführungskanäle angeordnet sind, verbunden ist.The two injection nozzles are arranged side by side in a common nozzle holder which is combined with a segment having the double piston device and the corresponding pressure bores and channels via a threaded sleeve which is connected to a connecting element in which the supply channels are arranged.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen:

Fig. 1
einen Längsschnitt durch einen Halter mit den beiden Einspritzventilen,
Fig. 2
einen Querschnitt nach der Linie II-II der Fig. 1,
Fig. 3
einen Querschnitt nach der Linie III-III der Fig. 2,
Fig. 4
eine Draufsicht auf ein Strahlbild der Brenngase und der Kraftstoffe bzw. Zündöle und
Fig. 5
eine Vorderansicht des Strahlbildes mit in der Ebene auftreffenden Strahlen.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it:
Fig. 1
a longitudinal section through a holder with the two injection valves,
Fig. 2
2 shows a cross section along the line II-II of FIG. 1,
Fig. 3
3 shows a cross section along the line III-III of FIG. 2,
Fig. 4
a plan view of a spray pattern of the fuel gases and the fuels or ignition oils and
Fig. 5
a front view of the beam image with rays hitting the plane.

Die Einspritzeinrichtung umfaßt im wesentlichen in einem Halter 1 zusammengefaßt zwei Einspritzventile 2 und 3, die Düsennadeln 4 und 5 umfassen und Spritzlöcher 36, 37 im Düsenelement 35 und 34 freigeben bzw. schließen.The injection device essentially comprises, in a holder 1, two injection valves 2 and 3, which comprise nozzle needles 4 and 5 and open or close spray holes 36, 37 in nozzle element 35 and 34.

Das eine Einspritzventil 2 ist zur Zuführung von Brennkraftstoff bzw. Zündöl und das weitere Einspritzventil 3 ist zur Zuführung von Brenngas in den Zylinder ausgelegt.One injection valve 2 is for supplying fuel or ignition oil and the other injection valve 3 is designed to supply fuel gas into the cylinder.

Der Halter 1 ist mit einem Segment 8 über eine Gewindehülse 9 mit einem Anschlußelement 10 verbunden. In diesem sind Kanäle 11 und 12 für die Zuführung von einem Schließdruck S und einem Steuerdruck Z in das Segment 8 vorgesehen, in dem die Kanäle weitergeführt sind.The holder 1 is connected to a segment 8 via a threaded sleeve 9 with a connecting element 10. In this channel 11 and 12 are provided for the supply of a closing pressure S and a control pressure Z in the segment 8, in which the channels are continued.

Das Einspritzventil 3 weist eine Doppelkolbeneinrichtung D auf, die koaxial zur Düsennadel 5 angeordnet ist und einerseits über den Kanal 11 mit einem Schließdruck S und andererseits über den Kanal 12 mit einem Steuerdruck Z beaufschlagbar ist.The injection valve 3 has a double-piston device D, which is arranged coaxially to the nozzle needle 5 and can be acted upon by a closing pressure S via the channel 11 and by a control pressure Z via the channel 12.

Die Einrichtung D umfaßt einen im Durchmesser größeren ersten Kolben 30 und einen im Durchmesser kleineren Kolben 31, der sich an der Düsennadel 5 anliegt.The device D comprises a larger diameter piston 30 and a smaller diameter piston 31 which bears against the nozzle needle 5.

In dem Raum R zwischen den beiden Kolben 30 und 31 tritt der Kanal 12 für den steuerdruck Z ein, wobei der Kanal 11 endseitig des größeren Kolbens 30 in einen Raum 13 einmündet. Weitere Kanäle 14 dienen zur Brenngaszuführung in das Ventil 3, welche in einen Ringraum 16 unterhalb der Düsennadel 5 eintreten.In the space R between the two pistons 30 and 31, the channel 12 enters the control pressure Z, the channel 11 opening into a space 13 at the end of the larger piston 30. Further channels 14 are used to supply fuel gas to the valve 3, which enter an annular space 16 below the nozzle needle 5.

Das weitere Ventil 2 zur Kraftstoff- bzw. Zündölzuführung im Halter 1 umfaßt die Düsennadel 4, deren Kopf 17 in einen Raum 18 eintaucht, der mit einem Kanal 19 verbunden ist, über den die Düsennadel 4 mit einem Schließdruck S aus dem Kanal 11 beaufschlagbar ist. Zur Verbindung dieser beiden Kanäle 11 und 19 ist in der Trennebene zwischen dem Anschlußelement 10 und dem Segment 8 ein Querkanal 20 z.B. eine Fräsung vorgesehen. Die Zuführung des Brennkraftstoffes bzw. Zündöls zum Ventil 2 erfolgt in einem Ringraum 21 über einen weiteren Kanal 23.The further valve 2 for supplying fuel or ignition oil in the holder 1 comprises the nozzle needle 4, the head 17 of which dips into a space 18 which is connected to a channel 19, via which the nozzle needle 4 can be acted upon by a closing pressure S from the channel 11 . To connect these two channels 11 and 19, a transverse channel 20, for example a milling, is provided in the parting plane between the connecting element 10 and the segment 8. The supply of the fuel or ignition oil to the Valve 2 takes place in an annular space 21 via a further channel 23.

Im Halter 1 sind zwei Düsennadeln 4 und 5 dargestellt. Denkbar sind z.B. bei größeren Motoren statt der einen Düsennadel 5 auch mehrere davon, die z.B. konzentrisch um die Düsennadel 4 angeordnet sein können. Durch die zwei Gaskanäle 14 strömt das, unter hohem Druck vorgespannte Brenngas in den Ringraum 16 der Düse 5 samt Düsennadel und wirkt dort auf die Schulter 5a der Düsennadel 5 mit dem Ziel, diese hochzuheben. Im Zwischensegment 8 wirkt der kleine Kolben 31, gepreßt vom größeren Kolben 30, unter dem über den Kanal 11 zugeführten Schließdruck S dem Abgasdruck G entgegengesetzt auf die Nadel 5.In the holder 1, two nozzle needles 4 and 5 are shown. For example, in the case of larger engines, instead of the one nozzle needle 5, several of them, e.g. can be arranged concentrically around the nozzle needle 4. The fuel gas, which is prestressed under high pressure, flows through the two gas channels 14 into the annular space 16 of the nozzle 5 together with the nozzle needle and acts there on the shoulder 5a of the nozzle needle 5 with the aim of lifting it up. In the intermediate segment 8, the small piston 31, pressed by the larger piston 30, acts opposite the exhaust gas pressure G on the needle 5 under the closing pressure S supplied via the channel 11.

Wird nun von einer Steuerpumpe P aus eine Menge von Steueröl über den Kanal 12 und den anschließenden Kanal 12a dem Doppelkolbenzwischenraum R zugeführt, so wird beim Ansteigen des dortigen Druckes sich der größere Kolben 30 vom kleineren Kolben 31 wegbewegen, so daß auf die Düsennadel 5 nur noch eine relativ kleine Kraft wirkt, die aus dem Steueröldruck und der Stirnfläche des kleinen Kolbens 31 entsteht. Es kann dann der anstehende Gasdruck G über die vorgenannte Schulter 5a die Nadel 5 hochheben. Wenn die Steuerpumpe P dann Förderende hat, wird der große Kolben 30 sofort wieder durch den Schließdruck aus der Leitung 11 nach unten gedrückt und die Nadel 5 schließt sich, womit die Gaszufuhr aus der Leitung 14 gestoppt wird.If a quantity of control oil is now supplied from a control pump P via the channel 12 and the subsequent channel 12a to the double-piston space R, the larger piston 30 will move away from the smaller piston 31 when the pressure there increases, so that only the needle 5 still acts a relatively small force, which arises from the control oil pressure and the end face of the small piston 31. The applied gas pressure G can then lift the needle 5 over the aforementioned shoulder 5a. When the control pump P then has the end of delivery, the large piston 30 is immediately pressed down again by the closing pressure from the line 11 and the needle 5 closes, thus stopping the gas supply from the line 14.

Der Raum 18 über der Düsennadel 4 ist mit dem Schließdruckkanal 11 z.B. durch den Querkanal 20 mit dem Kanal 19 verbunden, so daß die Nadel 4 gegenüber dem Gasdruck des Zylinders, dicht auf ihrem Sitz 32 gehalten wird. Wird nun die Zündölmenge oder auch die normale Dieselmenge durch den Kanal 23 unter die Schulter 4a der Düsennadel 4 gepumpt, so wird der dort ansteigende Druck die Düsennadel nach oben bewegen und der Zündöleinspritzvorgang oder der Dieselkraftstoffeinspritzvorgang erfolgt.The space 18 above the nozzle needle 4 is connected to the closing pressure channel 11, for example through the transverse channel 20 with the channel 19, so that the needle 4 is held tightly on its seat 32 with respect to the gas pressure of the cylinder. Now the amount of pilot oil or normal Pumped amount of diesel through the channel 23 under the shoulder 4a of the nozzle needle 4, the pressure rising there will move the nozzle needle upward and the ignition oil injection process or the diesel fuel injection process takes place.

Wie die Figuren 4 und 5 näher zeigen, weisen die Zündöldüsen 34 sowie die Gasdüse 35 definiert gerichtete Spritzlöcher 36 und 37 auf, die jeweils weitgehend gleichmäßig verteilt angeordnet sind. Die aus den Spritzlöchern 36 austretenden Gasstrahlen 38 sowie die aus den Spritzlöchern 37 austretenden Kraftstoffstrahlen 39 treffen deshalb in einer gemeinsamen Ebene E auf einer Kreislinie K in einem Bereich bzw. in einem Punkt zusammen. Der Kreismittelpunkt M liegt zwischen den beiden Düsennadeln 4 und 5, so daß die Strahlen sich in einem etwa gleichen Abstand von diesem Mittelpunkt M treffen.As FIGS. 4 and 5 show in more detail, the ignition oil nozzles 34 and the gas nozzle 35 have spray holes 36 and 37 which are directed in a defined manner and which are each arranged largely uniformly distributed. The gas jets 38 emerging from the spray holes 36 and the fuel jets 39 emerging from the spray holes 37 therefore meet in a common plane E on a circular line K in an area or at a point. The center of the circle M lies between the two nozzle needles 4 and 5, so that the jets meet at approximately the same distance from this center M.

Claims (8)

Einspritzeinrichtung für Brennkraftmaschinen, insbesondere Dieselmotoren mit Einspritzventilen für Kraftstoff bzw. Zündöl und hochverdichtetem Brenngas, dadurch gekennzeichnet, daß die beiden Düsennadeln (4, 5) der Ventile (2, 3) von einem gemeinsamen hydraulischen Schließdruck (S) beaufschlagbar sind, welcher einerseits über eine Doppelkolbeneinrichtung (D) auf die Düsennadel (5) in der einen Einspritzdüse (35) für Brenngas und andererseits unmittelbar auf die Düsennadel (4) in der weiteren Einspritzdüse (34) für Kraftstoff bzw. Zündöl einwirkt und daß die beiden Kolben (30, 31) der Einrichtung (D) einem definierten Steuerdruck (Z) ausgesetzt sind, der dem Schließdruck (S) und dem Brenngasdruck (G) während des Einspritzvorgangs überlagert ist und daß über den Steuerdruck (Z) eine Öffnungs- und Schließstellung der einen Düsennadel (5) einleitbar ist, wobei die weitere Düsennadel (4) zum Öffnen entgegen dem Schließdruck (S) vom über den Kanal (23) zugeführten Kraftstoff bzw. Zündöl beaufschlagbar ist.Injection device for internal combustion engines, in particular diesel engines with injection valves for fuel or ignition oil and highly compressed fuel gas, characterized in that the two nozzle needles (4, 5) of the valves (2, 3) can be acted upon by a common hydraulic closing pressure (S), which on the one hand is controlled by a double piston device (D) acts on the nozzle needle (5) in one injection nozzle (35) for fuel gas and, on the other hand, directly on the nozzle needle (4) in the further injection nozzle (34) for fuel or ignition oil, and that the two pistons (30, 31) the device (D) is exposed to a defined control pressure (Z) which is superimposed on the closing pressure (S) and the fuel gas pressure (G) during the injection process and that an opening and closing position of the one nozzle needle () is via the control pressure (Z) 5) can be introduced, the further nozzle needle (4) being supplied to open against the closing pressure (S) via the channel (23) Fuel or ignition oil can be applied. Einspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Doppelkolbeneinrichtung (D) einen im Durchmesser größeren Kolben (30) aufweist, der mit einem im Durchmesser kleineren Kolben (31) zusammenwirkt, in der Weise, daß der größere Kolben (30) entgegengesetzt des Schließdruckes (S) bewegbar ist und an der Düsennadel (5) anliegt und bei Brenngasbeaufschlagung entgegen dem Steuerdruck (Z) zur Erzielung einer Öffnungsstellung der Düsennadel (5) verschiebbar ist.Injection device according to Claim 1, characterized in that the double piston device (D) has a piston (30) which is larger in diameter and which interacts with a piston (31) which is smaller in diameter, in such a way that the larger piston (30) opposes the closing pressure (S) is movable and rests against the nozzle needle (5) and, when fuel gas is applied, can be displaced against the control pressure (Z) to achieve an open position of the nozzle needle (5). Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß ein den Schließdruck (S) zum größeren Kolben (30) des Einspritzventils (3) führender Kanal (11) über einen Querkanal (20) (Fräsung) mit einem Kanal (19) verbunden ist, der zu dem weiteren Einspritzventil (2) führt.Device according to claim 1 or 2, characterized in that a channel (11) leading the closing pressure (S) to the larger piston (30) of the injection valve (3) is connected to a channel (19) via a transverse channel (20) (milling) , which leads to the further injection valve (2). Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß in einem Düsenhalter (1) zwei Düsennadeln (4, 5) nebeneinander angeordnet sind, wobei die eine Düsennadel (5) zur Gaszuführung und die weitere Düsennadel (4) zur Kraftstoff- bzw. Zündölzuführung ausgeführt ist.Device according to one of claims 1 to 3, characterized in that two nozzle needles (4, 5) are arranged next to one another in a nozzle holder (1), one nozzle needle (5) for supplying gas and the other nozzle needle (4) for fuel or Ignition oil supply is carried out. Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Düsenhalter (1) mit einem die Doppelkolbeneinrichtung (D) sowie die Kanäle (12 und 19) für den Schließ- und Steuerdruck aufweisenden Segment (8) über eine Gewindehülse (9) zusammengehalten ist, die einen Flansch des Düsenhalters (1) hintergreift und mit einem Anschlußelement (10) verbunden ist, das die Zuführkanäle (11, 12) des Schließ- und Steuerdruckes aufweist.Device according to one of claims 1 to 4, characterized in that the nozzle holder (1) with a segment (8) having the double piston device (D) and the channels (12 and 19) for the closing and control pressure via a threaded sleeve (9) is held together, which engages behind a flange of the nozzle holder (1) and is connected to a connecting element (10) which has the supply channels (11, 12) of the closing and control pressure. Einrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß konzentrisch um die Brenngas-Düsennadel (5) mehrere Düsennadeln (4) für den Kraftstoff angeordnet sind.Device according to one of claims 1 to 5, characterized in that a plurality of nozzle needles (4) for the fuel are arranged concentrically around the fuel gas nozzle needle (5). Einrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß mehrere Spritzlöcher (36, 37) in den beiden Einspritzdüsen (35, 34) jeweils gleichmäßig verteilt angeordnet sind und sich die austretenden Strahlen (38, 39) aus der Brenn-Einspritzdüse (5) und der Kraftstoff-Einspritzdüse (35) in einer gemeinsamen Ebene (E) und auf einer gleichen Kreislinie (K) (Abstandslinie) treffen und der Kreis seinen Mittelpunkt (M) zwischen den beiden Einspritzdüsen (34, 35) aufweist.Device according to one of claims 1 to 6, characterized in that a plurality of spray holes (36, 37) in the two injection nozzles (35, 34) are each arranged uniformly distributed and the emerging jets (38, 39) emerge from the combustion injection nozzle ( 5) and the fuel injector (35) in a common plane (E) and on one meet the same circular line (K) (distance line) and the circle has its center point (M) between the two injection nozzles (34, 35). Einrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß ein Raum zwischen dem hinteren Ende der Gas-Düsennadel (5) und dem kleineren Kolben (31) der Einrichtung (D) mit einer Leckbohrung (33) verbunden ist.Device according to one of claims 1 to 7, characterized in that a space between the rear end of the gas nozzle needle (5) and the smaller piston (31) of the device (D) is connected to a leak hole (33).
EP93109661A 1992-06-24 1993-06-17 Injection device Expired - Lifetime EP0575887B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4220619 1992-06-24
DE4220619A DE4220619A1 (en) 1992-06-24 1992-06-24 Injector

Publications (2)

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EP0575887A1 true EP0575887A1 (en) 1993-12-29
EP0575887B1 EP0575887B1 (en) 1997-03-05

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EP (1) EP0575887B1 (en)
DE (2) DE4220619A1 (en)
FI (1) FI104013B1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0787900A2 (en) * 1996-01-30 1997-08-06 Wartsila Diesel International Ltd. OY Injection valve arrangement
WO1999045266A1 (en) 1998-03-03 1999-09-10 L'orange Gmbh Fuel injector for an internal combustion engine
DE19831081C2 (en) * 1998-07-10 2003-09-11 Orange Gmbh Fuel injector for an internal combustion engine
WO2015101406A1 (en) * 2013-12-30 2015-07-09 L'orange Gmbh Dual-fuel fuel injector
DE102016002228A1 (en) * 2016-02-25 2017-08-31 L'orange Gmbh fuel injector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101139179B1 (en) * 2010-07-02 2012-04-26 현대중공업 주식회사 Dual fuel injector valve with pumping nozzle for diesel and gas engine
DE102013203271A1 (en) * 2013-02-27 2014-08-28 Mtu Friedrichshafen Gmbh Injection valve for fuel introduction device of lifting cylinder engine for driving e.g. motor vehicle, has injection hole whose longitudinal central axis is skewed to longitudinal central axis of valve

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GB2130650A (en) * 1982-11-23 1984-06-06 Deutsche Forsch Luft Raumfahrt A diesel fuel and alcohol injection device for a direct injection engine
EP0237071A1 (en) * 1986-03-14 1987-09-16 Societe D'etudes De Machines Thermiques S.E.M.T. Fuel injection device for internal-combustion engines for the injection of two fuels
EP0546985A1 (en) * 1991-12-10 1993-06-16 New Sulzer Diesel Ag Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130650A (en) * 1982-11-23 1984-06-06 Deutsche Forsch Luft Raumfahrt A diesel fuel and alcohol injection device for a direct injection engine
EP0237071A1 (en) * 1986-03-14 1987-09-16 Societe D'etudes De Machines Thermiques S.E.M.T. Fuel injection device for internal-combustion engines for the injection of two fuels
EP0546985A1 (en) * 1991-12-10 1993-06-16 New Sulzer Diesel Ag Fuel injection valve for a reciprocating internal combustion engine optionally operating on diesel oil or on a gaseous fuel

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0787900A2 (en) * 1996-01-30 1997-08-06 Wartsila Diesel International Ltd. OY Injection valve arrangement
EP0787900A3 (en) * 1996-01-30 1998-04-29 Wartsila Diesel International Ltd. OY Injection valve arrangement
WO1999045266A1 (en) 1998-03-03 1999-09-10 L'orange Gmbh Fuel injector for an internal combustion engine
US6328230B1 (en) 1998-03-03 2001-12-11 L'orange Gmbh Fuel injector for an internal combustion engine
DE19808798C2 (en) * 1998-03-03 2003-10-23 Orange Gmbh Fuel injector for an internal combustion engine
AT500797B1 (en) * 1998-03-03 2006-07-15 Orange Gmbh FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE
DE19831081C2 (en) * 1998-07-10 2003-09-11 Orange Gmbh Fuel injector for an internal combustion engine
WO2015101406A1 (en) * 2013-12-30 2015-07-09 L'orange Gmbh Dual-fuel fuel injector
US9803564B2 (en) 2013-12-30 2017-10-31 L'orange Gmbh Dual-fuel fuel injector
DE102016002228A1 (en) * 2016-02-25 2017-08-31 L'orange Gmbh fuel injector
DE102016002228B4 (en) * 2016-02-25 2017-12-14 L'orange Gmbh fuel injector

Also Published As

Publication number Publication date
FI932941A0 (en) 1993-06-24
FI932941A (en) 1993-12-25
DE4220619A1 (en) 1994-01-05
EP0575887B1 (en) 1997-03-05
FI104013B (en) 1999-10-29
FI104013B1 (en) 1999-10-29
DE59305564D1 (en) 1997-04-10

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