DE102016209546A1 - Fuel injection valve - Google Patents
Fuel injection valve Download PDFInfo
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- DE102016209546A1 DE102016209546A1 DE102016209546.3A DE102016209546A DE102016209546A1 DE 102016209546 A1 DE102016209546 A1 DE 102016209546A1 DE 102016209546 A DE102016209546 A DE 102016209546A DE 102016209546 A1 DE102016209546 A1 DE 102016209546A1
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- Prior art keywords
- fuel injection
- injection valve
- damping
- valve according
- valve
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
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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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
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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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from injectors
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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
- 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
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
- F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
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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
- 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
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0071—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059 characterised by guiding or centering means in valves including the absence of any guiding means, e.g. "flying arrangements"
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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
- 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
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
- F02M63/008—Hollow valve members, e.g. members internally guided
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/28—Details of throttles in fuel-injection apparatus
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9015—Elastomeric or plastic materials
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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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9053—Metals
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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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/003—Valve inserts containing control chamber and valve piston
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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
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
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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
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0043—Two-way valves
Abstract
Kraftstoffeinspritzventil mit einem Injektorgehäuse (1), in welchem ein Hochdruckbereich (29) und ein Niederdruckbereich (13) ausgebildet ist, wobei das Kraftstoffeinspritzventil eine Düsennadel (5), welche zum Öffnen und Schließen wenigstens einer Einspritzöffnung (6) mit einem Dichtsitz (11) zusammenwirkt, und ein Steuerventil (30) aufweist. Dieses Steuerventil (30) kann Kraftstoff aus einem in dem Hochdruckbereich (29) ausgebildeten Steuerraum (8) in den Niederdruckbereich (13) absteuern. Im Niederdruckbereich (13) ist dabei ein Dämpfungselement (21) zur Dämpfung von Druckschwingungen angeordnet.Fuel injection valve with an injector housing (1), in which a high-pressure area (29) and a low-pressure area (13) is formed, wherein the fuel injection valve has a nozzle needle (5), which is used to open and close at least one injection opening (6) with a sealing seat (11). cooperates, and a control valve (30). This control valve (30) can control fuel from a control chamber (8) formed in the high-pressure region (29) into the low-pressure region (13). In the low pressure region (13) while a damping element (21) is arranged for damping of pressure oscillations.
Description
Die Erfindung betrifft ein Kraftstoffeinspritzventil, wie es vorzugsweise zur Einspritzung von Kraftstoff direkt in einen Brennraum einer Brennkraftmaschine Verwendung findet. The invention relates to a fuel injection valve, as it is preferably used for the injection of fuel directly into a combustion chamber of an internal combustion engine.
Stand der TechnikState of the art
Bei den heutigen Common-Rail-Injektoren wird Kraftstoff aus einem Hochdruckspeicher (Rail) den Kraftstoffeinspritzventilen über eine Hochdruckleitung zugeführt, wobei das Öffnen und Schließen der Einspritzöffnungen des Injektors in der Regel über einen Aktor, beispielsweise einen Piezo-Aktor oder einen Magnetaktor, gesteuert wird.In today's common rail injectors fuel from a high pressure accumulator (rail) is supplied to the fuel injection valves via a high pressure line, wherein the opening and closing of the injection openings of the injector is usually controlled by an actuator, such as a piezo actuator or a magnetic actuator ,
Common-Rail-Injektoren haben den Vorteil, dass das Einspritzverhalten sehr präzise über den Aktor gesteuert werden kann, sodass auch komplexe, für die Verbrennung besonders günstige Einspritzverläufe realisiert werden können. Somit kann der Einspritzvorgang optimiert werden, was wiederum zu einer Reduzierung von Schadstoffemissionen beiträgt.Common Rail injectors have the advantage that the injection behavior can be controlled very precisely via the actuator, so that even complex, for the combustion particularly favorable injection curves can be realized. Thus, the injection process can be optimized, which in turn contributes to a reduction of pollutant emissions.
In Common-Rail-Injektoren treten jedoch durch das periodische Öffnen und Schließen der Einspritzöffnungen Druckschwingungen auf. Diese können die Schaltperformance des Kraftstoffeinspritzventils beeinträchtigen, denn sie führen zu Prellern beim Schließverhalten und damit zu einem Düsensitzverschleiß. Darüber hinaus variiert durch die Preller der zeitliche Abstand der einzelnen Einspritzungen, wodurch die Realisierung von Mehrfacheinspritzungen beeinträchtigt werden kann. Druckschwingungen in Common-Rail Systemen haben daher negative Auswirkungen auf das Betriebsverhalten des gesamten Einspritzsystems der Brennkraftmaschine und reduzieren die Lebensdauer der einzelnen Injektoren.In common rail injectors, however, pressure oscillations occur due to the periodic opening and closing of the injection openings. These can affect the switching performance of the fuel injection valve, because they lead to bouncing in the closing behavior and thus to a nozzle seat wear. In addition, varied by the Preller the time interval of the individual injections, whereby the realization of multiple injections can be affected. Pressure oscillations in common-rail systems therefore have negative effects on the operating behavior of the entire injection system of the internal combustion engine and reduce the life of the individual injectors.
In der
Vorteile der ErfindungAdvantages of the invention
Der Erfindung liegt die Aufgabe zugrunde, ein Kraftstoffeinspritzventil, insbesondere einen Common-Rail-Injektor, nach dem Oberbegriff des Anspruch 1 auf eine Weise weiterzubilden, dass Druckschwingungen innerhalb des Kraftstoffeinspritzventils reduziert werden und somit das Einspritzverhalten des Injektors nicht mehr beeinträchtigt wird. Dadurch können stabile Mehrfacheinspritzungen realisiert werden.The invention has the object of developing a fuel injection valve, in particular a common rail injector, according to the preamble of claim 1 in a manner that pressure oscillations are reduced within the fuel injection valve and thus the injection behavior of the injector is no longer impaired. As a result, stable multiple injections can be realized.
Die Aufgabe wird bei dem erfindungsgemäßen Kraftstoffeinspritzventil dadurch gelöst, dass das Kraftstoffeinspritzventil ein Injektorgehäuse umfasst, in welchem ein Hochdruckbereich und ein Niederdruckbereich ausgebildet sind. Außerdem weist das Kraftstoffeinspritzventil eine Düsennadel auf, welche zum Öffnen und Schließen wenigstens einer Einspritzöffnung mit einem Dichtsitz zusammenwirkt. Des Weiteren weist das Kraftstoffeinspritzventil ein Steuerventil auf, welches Kraftstoff aus einem in dem Hochdruckbereich ausgebildeten Steuerraum in den Niederdruckbereich absteuern kann. Im Niederdruckbereich ist dabei ein Dämpfungselement zur Dämpfung von Druckschwingungen angeordnet.The object is achieved in the case of the fuel injection valve according to the invention in that the fuel injection valve comprises an injector housing in which a high-pressure region and a low-pressure region are formed. In addition, the fuel injection valve has a nozzle needle which cooperates with a sealing seat for opening and closing at least one injection opening. Furthermore, the fuel injection valve has a control valve, which can divert fuel from a control chamber formed in the high-pressure region into the low-pressure region. In the low pressure region while a damping element for damping pressure oscillations is arranged.
Die Dämpfung der Druckschwingungen im Niederdruckbereich führt im Betrieb zu einer verbesserten Kleinstmengenfähigkeit und zu einer reduzierten Rücklaufgegendrucksensibilität, da bei jedem neuen Öffnungsvorgang genau definierte Bedingungen herrschen und Druckschwingungen aus vorangegangenen Einspritzvorgängen bereits abgeklungen sind. Außerdem wird die Tendenz zu einer möglichen akustischen Kavitation verringert, da diese maßgeblich von der Amplitudengröße der Druckschwingungen hervorgerufen wird: Dabei bilden Druckschwingungen dampfgefüllte Hohlräume im Kraftstoff oder lösen diese auf. The damping of the pressure oscillations in the low-pressure region leads to improved micro-quantity capability and to reduced retrace backpressure sensitivity during operation, since precisely defined conditions prevail with each new opening process and pressure oscillations from previous injection processes have already subsided. In addition, the tendency to a possible acoustic cavitation is reduced, since this is mainly caused by the amplitude size of the pressure oscillations: In this case, pressure oscillations form vapor-filled cavities in the fuel or dissolve them.
Bei Verwendung von Magnetaktoren führt der Einsatz des Dämpfungselements außerdem zu einer Reduzierung der Druckschwingungen auf den Magnetanker. Druckschwingungen, welche von der Halteplatte des Magnetankers auf den sich bewegenden Magnetanker reflektiert werden, beeinträchtigen das Einspritzverhalten des Injektors, da es das Magnetsteuerventil kurzzeitig in eine Sitzdrosselung zwingt. Deshalb wird üblicherweise zur Vorbeugung solcher kurzzeitig auftretender Drosselungen ein größerer Magnetankerhub eingestellt. Dies erübrigt sich jedoch bei Verwendung eines Dämpfungselements zur Dämpfung von Druckschwingungen gemäß Anspruch 1 und erlaubt damit schnellere Schaltzeiten.When using magnetic actuators, the use of the damping element also leads to a reduction of the pressure oscillations on the armature. Pressure oscillations, which are reflected by the holding plate of the armature on the moving armature affect the injection behavior of the injector, as it forces the solenoid control valve briefly in a seat throttling. Therefore, a larger magnet armature stroke is usually set to prevent such short-term throttling. However, this is unnecessary when using a damping element for damping pressure oscillations according to claim 1 and thus allows faster switching times.
In einer ersten vorteilhaften Weiterbildung der Erfindung ist es vorgesehen, dass das Dämpfungselement als eine einen Dämpfungsraum begrenzende und abdichtende Membran ausgebildet ist. Die Membran ist vorzugsweise aus einem Metall, vorzugsweise in Wellenform, hergestellt, um die Druckschwingungen aufzunehmen. Dabei kann die Membran beispielsweise an den Dämpfungsraum angeschweißt werden. Diese Schweißnaht muss jedoch so angebracht werden, dass kein Kraftstoff in den Dämpfungsraum eindringen kann. Andernfalls kann die Dämpfungsfunktion nicht über die gesamte Lebensdauer des Kraftstoffeinspritzventils gewährleistet werden. Der Dämpfungsraum ist dabei mit einem Gas, vorzugsweise Luft, gefüllt. Es ist jedoch auch möglich, alternativ den Dämpfungsraum mit PA(Polyamid)-Schaum oder einem anderen Kunststoffschaum zu füllen. Für Kraftstoff ist es in diesem Fall schwer möglich, in diesen geschlossenporigen Schaum einzudringen und die Dämpfungseigenschaften bleiben erhalten. PA-Schaum behält seine Festigkeit bis zu Temperaturen von 210 Grad Celsius und ist daher für einen Einsatz in einem Kraftstoffeinspritzventil geeignet.In a first advantageous embodiment of the invention, it is provided that the damping element is designed as a damping chamber defining and sealing membrane. The membrane is preferably made of a metal, preferably in a wave form, to accommodate the pressure oscillations. In this case, the membrane, for example, to the damping chamber be welded. However, this weld must be installed so that no fuel can penetrate into the damping chamber. Otherwise, the damping function can not be guaranteed over the entire service life of the fuel injection valve. The damping chamber is filled with a gas, preferably air. However, it is also possible alternatively to fill the damping chamber with PA (polyamide) foam or another plastic foam. For fuel, it is difficult in this case to penetrate into this closed-cell foam and the damping properties are retained. PA foam maintains its strength up to temperatures of 210 degrees Celsius and is therefore suitable for use in a fuel injection valve.
In einer weiteren vorteilhaften Weiterbildung umfasst das Injektorgehäuse des Kraftstoffeinspritzventils einen Ventilkörper und einen Düsenkörper, in welchen ein Ventilstück angeordnet ist. Dabei umfasst das Ventilstück eine Verbindung in Form einer Ablaufdrossel von dem Hochdruckbereich in den Niederdruckbereich. In dem Ventilstück ist vorteilhafterweise das Dämpfungselement zum Dämpfen von Druckschwingungen angeordnet. Es ist dabei in dem Teil des Dämpfungselements angeordnet, welches dem Niederdruckbereich zugewandt ist. Vorteilhafterweise kann das Dämpfungselement auch als ein zylinderförmiges Einlegeteil ausgebildet sein, welches direkt im Niederdruckbereich zwischen dem Ventilstück und einem Ventilspannelement angeordnet ist.In a further advantageous development, the injector housing of the fuel injection valve comprises a valve body and a nozzle body, in which a valve piece is arranged. In this case, the valve piece comprises a connection in the form of a discharge throttle from the high-pressure region into the low-pressure region. In the valve piece, the damping element is advantageously arranged for damping pressure oscillations. It is arranged in the part of the damping element, which faces the low-pressure region. Advantageously, the damping element can also be designed as a cylindrical insert part, which is arranged directly in the low-pressure region between the valve piece and a valve clamping element.
Weiterhin weist das als Magnetventil ausgebildete Steuerventil des Kraftstoffeinspritzventils eine Magnetspule auf. Dabei umfasst das Steuerventil einen Ankerbolzen und einen Magnetanker. Somit kann bei Betätigung des Steuerventils über die Magnetspule der Magnetanker bewegt werden, wodurch mittels Druckveränderungen im Kraftstoffeinspritzventil der Öffnungsvorgang der Düsennadel eingeleitet wird.Furthermore, the solenoid valve designed as a control valve of the fuel injection valve on a magnetic coil. In this case, the control valve comprises an anchor bolt and a magnet armature. Thus, upon actuation of the control valve via the magnetic coil of the armature can be moved, whereby the opening process of the nozzle needle is initiated by means of pressure changes in the fuel injection valve.
In einer weiteren vorteilhaften Ausgestaltung des Erfindungsgedankens ist es vorgesehen, dass das Ventilstück einen der Düsennadel abgewandten als Hohlzylinder ausgebildeten Endbereich aufweist, in dem der Magnetanker geführt ist. Vorteilhafterweise weist das Ventilstück außerdem einen der Düsennadel zugewandten Endbereich auf, in welchem der dichtsitzabgewandte Endbereich der Düsennadel geführt ist.In a further advantageous embodiment of the inventive concept, it is provided that the valve piece has a nozzle needle facing away from designed as a hollow cylinder end portion in which the armature is guided. Advantageously, the valve piece also has an end region facing the nozzle needle, in which the end region of the nozzle needle facing away from the sealing seat is guided.
In einer weiteren Ausgestaltung der Erfindung ist es vorteilhafterweise vorgesehen, dass der Düsenkörper einen im Hochdruckbereich ausgebildeten Hochdruckraum begrenzt, in welchem die Düsennadel aufgenommen ist. In dem Hochdruckraum ist eine Rückstellfeder angeordnet, welche sich einerseits an einem Absatz der Düsennadel und andererseits an dem Düsenkörper abstützt. Die Rückstellfeder beaufschlagt die Düsennadel mit einer Kraft in Richtung der wenigstens einen Einspritzöffnung.In a further embodiment of the invention, it is advantageously provided that the nozzle body defines a high-pressure area formed in the high pressure area, in which the nozzle needle is received. In the high-pressure chamber, a return spring is arranged, which is supported on the one hand on a shoulder of the nozzle needle and on the other hand on the nozzle body. The return spring acts on the nozzle needle with a force in the direction of the at least one injection opening.
Zeichnungendrawings
In der Zeichnung ist ein erfindungsgemäßes Kraftstoffeinspritzventil dargestellt. Es zeigt inIn the drawing, an inventive fuel injection valve is shown. It shows in
Beschreibung des AusführungsbeispielsDescription of the embodiment
Bei Betätigung des Steuerventils
Während des Betriebs des Kraftstoffeinspritzventils, beispielsweise durch die Bewegung des Magnetankers
Das Dämpfungselement
In der
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102007025617 A1 [0005, 0005] DE 102007025617 A1 [0005, 0005]
Claims (15)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016209546.3A DE102016209546A1 (en) | 2016-06-01 | 2016-06-01 | Fuel injection valve |
EP17715133.9A EP3464871B1 (en) | 2016-06-01 | 2017-04-03 | Fuel injection valve |
CN201780033827.4A CN109312702A (en) | 2016-06-01 | 2017-04-03 | Fuel injection valve |
KR1020187034655A KR102303559B1 (en) | 2016-06-01 | 2017-04-03 | fuel injection valve |
PCT/EP2017/057806 WO2017207134A1 (en) | 2016-06-01 | 2017-04-03 | Fuel injection valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016209546.3A DE102016209546A1 (en) | 2016-06-01 | 2016-06-01 | Fuel injection valve |
Publications (1)
Publication Number | Publication Date |
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DE102016209546A1 true DE102016209546A1 (en) | 2017-12-07 |
Family
ID=58464564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102016209546.3A Withdrawn DE102016209546A1 (en) | 2016-06-01 | 2016-06-01 | Fuel injection valve |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3464871B1 (en) |
KR (1) | KR102303559B1 (en) |
CN (1) | CN109312702A (en) |
DE (1) | DE102016209546A1 (en) |
WO (1) | WO2017207134A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018202916A1 (en) * | 2018-02-27 | 2019-08-29 | Robert Bosch Gmbh | fuel injector |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115163342B (en) * | 2022-07-06 | 2024-01-09 | 一汽解放汽车有限公司 | Injector and power device |
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DE10052604A1 (en) * | 2000-10-24 | 2002-05-02 | Bosch Gmbh Robert | Solenoid valve for control of injection valve of IC engine with solenoid and movable armature and control valve element working together with valve seat for opening/closing fuel |
DE102007025617A1 (en) | 2007-06-01 | 2008-12-04 | Robert Bosch Gmbh | Fuel injector with low wear |
DE102010042622A1 (en) * | 2010-10-19 | 2012-04-19 | Robert Bosch Gmbh | Fuel injector, in particular common rail injector |
DE102012220031A1 (en) * | 2012-11-02 | 2014-05-08 | Robert Bosch Gmbh | Fuel injector for internal combustion engine, has one throttle gap that is formed in area of spill compound, where another throttle gap is provided in spill compound besides former throttle gap |
DE102014219199A1 (en) * | 2014-09-23 | 2016-03-24 | Robert Bosch Gmbh | fuel injector |
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US6237570B1 (en) * | 1997-10-09 | 2001-05-29 | Denso Corporation | Accumulator fuel injection apparatus |
DE102004034672A1 (en) * | 2004-07-17 | 2006-02-16 | Robert Bosch Gmbh | Fuel injection device for an internal combustion engine |
DE102007043538A1 (en) * | 2007-09-12 | 2009-03-19 | Robert Bosch Gmbh | Injector with hydraulic damper |
DE102008000695A1 (en) * | 2008-03-17 | 2009-09-24 | Robert Bosch Gmbh | Impact damping mechanism for magnetic valve of internal combustion engine, has radial projection arranged at valve needle, and stop washer movably arranged between two lifting stops with respect to valve needle |
DE102008000929A1 (en) * | 2008-04-02 | 2009-10-08 | Robert Bosch Gmbh | Hydraulic damping |
DE102008001281A1 (en) * | 2008-04-21 | 2009-10-22 | Robert Bosch Gmbh | injector |
DE102011078564A1 (en) * | 2011-07-04 | 2013-01-10 | Robert Bosch Gmbh | Control valve for a fuel injector and fuel injector |
DE102013003104A1 (en) * | 2013-02-25 | 2014-08-28 | L'orange Gmbh | Fuel injector for use with diesel fuel in fuel injection device of fuel injection system, has pressure shock absorber that is arranged in leakage flow path to attenuate pressure waves, which run through leakage flow path to actuator chamber |
FR3017905B1 (en) * | 2014-02-24 | 2018-12-07 | Delphi International Operations Luxembourg S.A R.L. | FUEL INJECTOR |
-
2016
- 2016-06-01 DE DE102016209546.3A patent/DE102016209546A1/en not_active Withdrawn
-
2017
- 2017-04-03 WO PCT/EP2017/057806 patent/WO2017207134A1/en unknown
- 2017-04-03 EP EP17715133.9A patent/EP3464871B1/en active Active
- 2017-04-03 CN CN201780033827.4A patent/CN109312702A/en active Pending
- 2017-04-03 KR KR1020187034655A patent/KR102303559B1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10052604A1 (en) * | 2000-10-24 | 2002-05-02 | Bosch Gmbh Robert | Solenoid valve for control of injection valve of IC engine with solenoid and movable armature and control valve element working together with valve seat for opening/closing fuel |
DE102007025617A1 (en) | 2007-06-01 | 2008-12-04 | Robert Bosch Gmbh | Fuel injector with low wear |
DE102010042622A1 (en) * | 2010-10-19 | 2012-04-19 | Robert Bosch Gmbh | Fuel injector, in particular common rail injector |
DE102012220031A1 (en) * | 2012-11-02 | 2014-05-08 | Robert Bosch Gmbh | Fuel injector for internal combustion engine, has one throttle gap that is formed in area of spill compound, where another throttle gap is provided in spill compound besides former throttle gap |
DE102014219199A1 (en) * | 2014-09-23 | 2016-03-24 | Robert Bosch Gmbh | fuel injector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102018202916A1 (en) * | 2018-02-27 | 2019-08-29 | Robert Bosch Gmbh | fuel injector |
Also Published As
Publication number | Publication date |
---|---|
CN109312702A (en) | 2019-02-05 |
KR20190014508A (en) | 2019-02-12 |
EP3464871A1 (en) | 2019-04-10 |
KR102303559B1 (en) | 2021-09-23 |
WO2017207134A1 (en) | 2017-12-07 |
EP3464871B1 (en) | 2020-12-23 |
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