EP2721282B1 - Method of manufacturing of an injector, in particular of an fuel injector for an internal combustion engine - Google Patents

Method of manufacturing of an injector, in particular of an fuel injector for an internal combustion engine Download PDF

Info

Publication number
EP2721282B1
EP2721282B1 EP12728421.4A EP12728421A EP2721282B1 EP 2721282 B1 EP2721282 B1 EP 2721282B1 EP 12728421 A EP12728421 A EP 12728421A EP 2721282 B1 EP2721282 B1 EP 2721282B1
Authority
EP
European Patent Office
Prior art keywords
injector
valve
storage volume
injectors
valve body
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.)
Active
Application number
EP12728421.4A
Other languages
German (de)
French (fr)
Other versions
EP2721282A1 (en
Inventor
Peter Bentele
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2721282A1 publication Critical patent/EP2721282A1/en
Application granted granted Critical
Publication of EP2721282B1 publication Critical patent/EP2721282B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
    • 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

Definitions

  • the present invention relates to a method for producing an injector, in particular a fuel injector for an internal combustion engine, comprising an actuator module dominantly a valve for adjusting a flow of a fluid medium, wherein the valve connects a control chamber for controlling a control piston with a low pressure region.
  • Such an injector is from the DE 10 2007 044 356 A1 known.
  • This injector for injecting fuel into a combustion chamber of an internal combustion engine has an adjustable between a closed position and the fuel flow releasing open position needle body which is actuated by means of a sleeve-shaped valve member having valve, and wherein the valve element cooperates with a arranged on a valve member valve seat.
  • This injector has a pressure pin enclosed by the valve element and separate from the component, and the valve seat is designed as an outer cone. Finally, a space is arranged in a valve body of the injector, which is connected via a channel to the low-pressure region of the injector.
  • the invention is based on the object to provide a method for producing an injector, which is improved in terms of its manufacturing process.
  • control chamber is connected to a storage volume
  • the volume volume length is designed injector independent equal length for different injectors.
  • This embodiment is the knowledge too Due to the fact that, due to design conditions and customer wishes, injectors with different overall lengths are installed, for example in internal combustion engines, the injectors being in particular part of an injection system.
  • Such an injection system has a high-pressure pump, which conveys the fluid medium in the form of fuel in a high-pressure accumulator.
  • This high-pressure accumulator is connected to an injector designed according to the invention, which injects fuel supplied from the high-pressure accumulator into a combustion chamber of the internal combustion engine assigned to the injector.
  • injectors for different internal combustion engines have different overall lengths.
  • the injectors can be standardized with respect to the manufacturing process and thereby the manufacturing cost can be reduced.
  • the manufacturing costs can be reduced since only one drilling tool for producing the storage volume at different lengths of the injectors must be provided.
  • the accuracy of the injection behavior of different injectors can furthermore be better coordinated with each other. As a result, it is possible, for example, to achieve, in particular, simplifications in the control units, which need no longer be adapted differently to the respective injector.
  • the design of the injector control room with a storage volume is based on the following finding: At rest, the closing force is greater than the opening force generated by the fuel inventively embodied injectors.
  • the closing force is varied by a pressure variation in the control chamber, with high pressure in the control room when idle.
  • the control chamber is connected via an inlet channel with a switched inlet throttle with the high-pressure region of the fuel system, while the control chamber is connected via a flow channel with activated outlet throttle controlled via the valve with the low pressure region of the fuel system.
  • the actuator module By actuating the actuator module and thus opening the valve, the pressure in the control chamber is lowered and the control piston, which is designed in particular as a needle body, moves out of a valve seat in a valve body tip of the injector.
  • the storage volume is a memory space connected to the control chamber, which in turn is arranged in a further embodiment, at least largely in a valve body of the injector.
  • all properties associated with a particular injector can be taken into account with regard to the design and the size of the storage volume.
  • the storage space then extends to a valve body paragraph along the valve body surrounding the needle body.
  • a valve body guide projects into the storage space with an end-side section and is guided in this area.
  • injectors with different overall lengths have a uniform volume length y, extending from the valve body shoulder to a shoulder on the injection-side end of the storage volume.
  • the storage volume is also made with different injectors with an identical diameter d, so that the same tool can be used for all applications.
  • the total storage volume of injectors with different lengths is approximately equal.
  • the total storage volume becomes significantly determined by the actual volume of the storage space.
  • a storage compartment determines the total storage volume, the storage compartment being determined by the resulting actual volume from the shoulder to the valve seat, so that the differences in the overall length of the respective injectors with the resulting total storage volumes are not significant fall.
  • the resulting differences can be compensated for example by an adapted Einragtiefe the needle body guide into the storage space.
  • the ratio of the total storage volume of a smallest possible injector to a longest possible injector in the range of 0.8 to 1.2, preferably in the range of 0.95 to 1.05. This embodiment has proved to be particularly advantageous.
  • FIG. 1 shows a fuel injector, which is used in particular in common rail injection systems for self-igniting internal combustion engines.
  • a high-pressure pump supplies fuel to a high-pressure accumulator (rail) and stores it in the high-pressure accumulator.
  • the fuel injector according to the invention is connected to the high-pressure accumulator via a high-pressure line, which is screwed to the connecting piece 1 of the fuel injector.
  • a filter 2 is used, which is intended to keep possible impurities in the fuel from the fuel injector.
  • the supplied via the connecting piece 1 fuel is supplied via an inlet channel 3 with throttle inserted a control chamber 4, which is arranged end of a needle body 5 in a needle body guide 6.
  • the needle body guide 6 is in turn arranged and fixed in a valve body 7 on a valve body paragraph 20, wherein the connecting piece 1 is screwed into the valve body 7.
  • an actuator module 8 is arranged, whose function will be described below.
  • a valve body tip 9 is attached to the valve body 7 by means of a union nut 10.
  • the needle body 5 extends with a needle body tip 11 into the end region of the valve body tip 9 and forms a valve seat 19, from the injection into the needle body tip 11 injection channels 12, by the open state of the needle body. 5 Fuel is injected into the combustion chambers of the internal combustion engine, are shut off by the fuel supply explained below.
  • the inlet channel 3 is connected via a flow channel along the needle body 5 with a space in front of the valve seat 19.
  • a storage space 16 in the valve body 7 surrounding the needle body 5 is turned on.
  • a needle pressure spring chamber 18 a likewise not shown flow connection to the needle body tip 11 subsequent to the valve seat 19.
  • the needle body 5 is further pressed by a arranged in the needle body spring chamber 18 needle body spring 13 in the direction of the valve seat 19 and thus supports the of the in the control chamber 4 prevailing fuel pressure exerted pressure force on the needle body. 5
  • the fuel pressure in the control chamber 4 is reduced until the upcoming fuel pressure the needle body 5 against the force of the needle body spring 13 toward the Control room 4 presses.
  • the control chamber 4 is connected via a flow channel 14 with an activated throttle to a valve 15 actuated by the actuator module 8, wherein the valve 15 is connected on the actuator module side to a low-pressure region of the fuel system. If the valve 15 is moved by the actuator module 8 in its open position, fuel flows from the control chamber 4 via the drain passage 14 through the valve 15 in the low pressure region of the fuel system and the pressure in the control chamber 4 is thus reduced.
  • the throttle in the inlet channel 3 and the outlet channel 14 are tuned so that more fuel can flow through the drain channel 14 as nachströmt through the inlet channel 3 into the control chamber 4.
  • control chamber 4 is connected to the storage space 16, which is arranged around the needle body 5 in the valve body 7.
  • the storage space 16 extends with a large diameter and consequently large volume from the control space 4 to a first shoulder 17 in the valve body 7 (and another storage space further having a smaller diameter over the needle body spring space 18 to the valve seat 19).
  • FIG. 2 two valve body 7 different length injectors are shown.
  • the length y which is defined by the valve body paragraph 20 to the paragraph 17, is the same length in both valve bodies 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Injektors, insbesondere eines Kraftstoffinjektors für eine Brennkraftmaschine, aufweisend ein Aktormodul beherrschend ein Ventil zur Einstellung eines Durchflusses eines fluiden Mediums, wobei das Ventil einen Steuerraum zur Steuerung eines Steuerkolbens mit einem Niederdruckbereich verbindet.The present invention relates to a method for producing an injector, in particular a fuel injector for an internal combustion engine, comprising an actuator module dominantly a valve for adjusting a flow of a fluid medium, wherein the valve connects a control chamber for controlling a control piston with a low pressure region.

Stand der TechnikState of the art

Ein derartiger Injektor ist aus der DE 10 2007 044 356 A1 bekannt. Dieser Injektor zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine weist einen zwischen einer Schließstellung und einer den Kraftstofffluss freigebenden Öffnungsstellung verstellbaren Nadelkörper auf, der mittels eines ein hülsenförmiges Ventilelement aufweisenden Ventils ansteuerbar ist, und wobei das Ventilelement mit einem an einem Bauelement angeordneten Ventilsitz zusammenwirkt. Dieser Injektor weist ein von dem Ventilelement umschlossenen und von dem Bauelement separaten Druckstift auf und der Ventilsitz ist als Außenkonus ausgebildet. Schließlich ist in einem Ventilkörper des Injektors ein Raum angeordnet, der über einen Kanal mit dem Niederdruckbereich des Injektors verbunden ist.Such an injector is from the DE 10 2007 044 356 A1 known. This injector for injecting fuel into a combustion chamber of an internal combustion engine has an adjustable between a closed position and the fuel flow releasing open position needle body which is actuated by means of a sleeve-shaped valve member having valve, and wherein the valve element cooperates with a arranged on a valve member valve seat. This injector has a pressure pin enclosed by the valve element and separate from the component, and the valve seat is designed as an outer cone. Finally, a space is arranged in a valve body of the injector, which is connected via a channel to the low-pressure region of the injector.

Aus der DE 10 2009 046 582 A1 ist weiterhin ein Verfahren zum Herstellen von Kraftstoffeinspritzventilen bekannt, bei dem das Volumen der jeweiligen Steuerräume entsprechend dem gewünschten Öffnungsverhalten angepasst wird.From the DE 10 2009 046 582 A1 Furthermore, a method for producing fuel injection valves is known in which the volume of the respective control chambers is adapted according to the desired opening behavior.

Der Erfindung liegt die Aufgabe zu Grunde, ein Verfahren zur Herstellung eines Injektors bereitzustellen, das hinsichtlich seines Fertigungsprozesses verbessert ist.The invention is based on the object to provide a method for producing an injector, which is improved in terms of its manufacturing process.

Offenbarung der ErfindungDisclosure of the invention Vorteile der ErfindungAdvantages of the invention

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst, wobei der Steuerraum mit einem Speichervolumen verschaltet ist, dessen Volumenraumlänge injektorunabhängig gleich lang für unterschiedliche Injektoren ausgestaltet ist. Dieser Ausgestaltung liegt die Erkenntnis zu Grunde, dass aufgrund von konstruktiven Gegebenheiten und aufgrund von Kundenwünschen Injektoren mit unterschiedlichen Gesamtlängen beispielsweise bei Brennkraftmaschinen verbaut werden, wobei die Injektoren insbesondere Teil eines Einspritzsystems sind. Ein solches Einspritzsystem weist eine Hochdruckpumpe auf, die das fluide Medium in Form von Kraftstoff in einen Hochdruckspeicher fördert. Dieser Hochdruckspeicher ist mit einem erfindungsgemäß ausgestalteten Injektor verschaltet, der aus dem Hochdruckspeicher zugeführten Brennstoff in einem den Injektor zugeordneten Brennraum der Brennkraftmaschine einspritzt. Bedingt durch beispielsweise unterschiedlich konstruierte Zylinderköpfe der Brennkraftmaschine weisen Injektoren für verschiedene Brennkraftmaschinen unterschiedliche Gesamtlängen auf. Dadurch, dass nun die Volumenraumlänge des Speichervolumens bei unterschiedlichen Injektoren gleich lang ausgestaltet ist, können die Injektoren hinsichtlich des Fertigungsprozesses vereinheitlicht und dadurch die Fertigungskosten reduziert werden. Die Fertigungskosten können reduziert werden, da nur ein Bohrwerkzeug zur Fertigung des Speichervolumens bei unterschiedlichen Längen der Injektoren bereitgestellt werden muss. Durch die Vereinheitlichung der Injektoren im Bereich bis einschließlich des Speichervolumens kann weiterhin die Genauigkeit des Einspritzverhaltens unterschiedlicher Injektoren besser aufeinander abgestimmt werden. Dadurch lassen sich beispielsweise insbesondere Vereinfachungen in den Steuergeräten erreichen, die nicht mehr unterschiedlich auf den jeweiligen Injektor abgestimmt werden müssen.This object is achieved by the characterizing features of claim 1, wherein the control chamber is connected to a storage volume, the volume volume length is designed injector independent equal length for different injectors. This embodiment is the knowledge too Due to the fact that, due to design conditions and customer wishes, injectors with different overall lengths are installed, for example in internal combustion engines, the injectors being in particular part of an injection system. Such an injection system has a high-pressure pump, which conveys the fluid medium in the form of fuel in a high-pressure accumulator. This high-pressure accumulator is connected to an injector designed according to the invention, which injects fuel supplied from the high-pressure accumulator into a combustion chamber of the internal combustion engine assigned to the injector. Due to, for example, differently constructed cylinder heads of the internal combustion engine, injectors for different internal combustion engines have different overall lengths. The fact that now the volume space length of the storage volume is designed to be the same length at different injectors, the injectors can be standardized with respect to the manufacturing process and thereby the manufacturing cost can be reduced. The manufacturing costs can be reduced since only one drilling tool for producing the storage volume at different lengths of the injectors must be provided. By standardizing the injectors in the range up to and including the storage volume, the accuracy of the injection behavior of different injectors can furthermore be better coordinated with each other. As a result, it is possible, for example, to achieve, in particular, simplifications in the control units, which need no longer be adapted differently to the respective injector.

Der Ausgestaltung des Injektors Steuerraums mit einem Speichervolumen liegt die folgende Erkenntnis zu Grunde:
Im Ruhezustand ist bei erfindungsgemäß ausgebildeten Injektoren die Schließkraft größer als die durch den Kraftstoff generierte Öffnungskraft. Variiert wird die Schließkraft durch eine Druckvariation im Steuerraum, wobei im Ruhezustand im Steuerraum Hochdruck herrscht. Der Steuerraum ist über einen Zulaufkanal mit einer eingeschalteten Zulaufdrossel mit dem Hochdruckbereich des Kraftstoffsystems verbunden, während der Steuerraum über einen Ablaufkanal mit eingeschalteter Ablaufdrossel gesteuert über das Ventil mit dem Niederdruckbereich des Kraftstoffsystems verschaltet ist. Durch Betätigen des Aktormoduls und einer so bewirkten Öffnung des Ventils wird der Druck im Steuerraum abgesenkt und der Steuerkolben, der insbesondere als Nadelkörper ausgebildet ist, bewegt sich aus einem Ventilsitz in einer Ventilkörperspitze des Injektors. Beim Schließen des Ventils wird der Ablaufkanal geschlossen und durch über den Zulaufkanal nachströmenden Kraftstoff wird der Nadelkörper wieder auf den Ventilsitz bewegt. Die Einspritzung ist somit abgeschlossen. Es ist nun beobachtet worden, dass bei den Öffnungs- und Schließvorgängen der Einspritzkanäle sowie durch die Druckunterschiede im Steuerraum Druckwellen ausgelöst werden, die die Einspritzmengengenauigkeit sowie die Mehrfacheinspritzfähigkeit direkt beeinflussen. Bei sehr kurzen Abständen zwischen zwei Einspritzungen werden bei den bisherigen Injektoren sehr große Mengenwellen erzeugt. Durch den Anbau eines Speichervolumens als sogenanntes "Minirail" an dem Injektor, wobei das Speichervolumen unter Kraftstoffhochdruck steht, werden diese Druckschwingungen gedämpft. Dies hat zur Folge, dass die Mengenwellen zwischen zwei Einspritzungen deutlich reduziert und die Einspritzgenauigkeit erhöht wird. Grundsätzlich ist die Ausbildung und Anordnung des Speichervolumens für die erfindungsgemäße Funktion variierbar. Es hat sich aber als vorteilhaft erwiesen, wenn, das Speichervolumen ein mit dem Steuerraum verschalteter Speicherraum ist, der wiederum in weiterer Ausgestaltung zumindest weitgehend in einen Ventilkörper des Injektors angeordnet ist. Dabei können dann alle einen bestimmten Injektor zugehörigen Eigenschaften hinsichtlich der Ausbildung und der Größe des Speichervolumens berücksichtigt werden.The design of the injector control room with a storage volume is based on the following finding:
At rest, the closing force is greater than the opening force generated by the fuel inventively embodied injectors. The closing force is varied by a pressure variation in the control chamber, with high pressure in the control room when idle. The control chamber is connected via an inlet channel with a switched inlet throttle with the high-pressure region of the fuel system, while the control chamber is connected via a flow channel with activated outlet throttle controlled via the valve with the low pressure region of the fuel system. By actuating the actuator module and thus opening the valve, the pressure in the control chamber is lowered and the control piston, which is designed in particular as a needle body, moves out of a valve seat in a valve body tip of the injector. When closing the valve, the drainage channel is closed and through the Supply channel nachströmenden fuel, the needle body is moved back to the valve seat. The injection is thus completed. It has now been observed that in the opening and closing operations of the injection channels and by the pressure differences in the control chamber pressure waves are triggered, which directly affect the injection quantity accuracy and the multiple injection capability. At very short intervals between two injections very large volume waves are generated in the previous injectors. By mounting a storage volume as a so-called "minirail" on the injector, the storage volume is under high fuel pressure, these pressure oscillations are damped. This has the consequence that the volume waves between two injections significantly reduced and the injection accuracy is increased. In principle, the design and arrangement of the storage volume for the function according to the invention can be varied. However, it has proved to be advantageous if, the storage volume is a memory space connected to the control chamber, which in turn is arranged in a further embodiment, at least largely in a valve body of the injector. In this case, all properties associated with a particular injector can be taken into account with regard to the design and the size of the storage volume.

Dabei ist wiederum in weiterer Ausgestaltung vorgesehen, dass sich der Speicherraum anschließend an einen Ventilkörperabsatz entlang des Ventilkörpers umgebend den Nadelkörper erstreckt. Dabei ragt eine Ventilkörperführung mit einem endseitigen Abschnitt in den Speicherraum hinein und ist in diesem Bereich geführt. Somit lässt sich der Speicherraum ohne aufwendige Änderung eines Injektors in diesen integrieren.In this case, it is again provided in a further embodiment, that the storage space then extends to a valve body paragraph along the valve body surrounding the needle body. In this case, a valve body guide projects into the storage space with an end-side section and is guided in this area. Thus, the memory space can be integrated without costly change of an injector in this.

In Weiterbildung der Erfindung weisen Injektoren mit unterschiedlichen Gesamtlängen eine einheitliche Volumenraumlänge y, sich erstreckend von dem Ventilkörperabsatz bis zu einem Absatz an dem spritzseitigen Ende des Speichervolumens, auf. Dabei ist das Speichervolumen bei unterschiedlichen Injektoren darüber hinaus mit einem identischen Durchmesser d gefertigt, so dass für alle Anwendungsfälle das gleiche Werkzeug verwendet werden kann. Der Durchmesser d entspricht im Bezug zum Außendurchmesser dA des Ventilkörpers etwa d = 0,3 x dA bis d = 0,55 x dA und die Gesamtlänge y entspricht im Bezug zum Durchmesser d etwa y = 6 x d bis y = 9,5 x d.In a development of the invention, injectors with different overall lengths have a uniform volume length y, extending from the valve body shoulder to a shoulder on the injection-side end of the storage volume. The storage volume is also made with different injectors with an identical diameter d, so that the same tool can be used for all applications. The diameter d corresponds in relation to the outer diameter d A of the valve body about d = 0.3 xd A to d = 0.55 xd A and the total length y corresponds in relation to the diameter d about y = 6 xd to y = 9.5 x d.

In weiterer Ausgestaltung der Erfindung ist das Gesamtspeichervolumen von Injektoren mit unterschiedlichen Längen angenähert gleich. Das Gesamtspeichervolumen wird maßgeblich von dem tatsächlichen Volumen des Speicherraums bestimmt. In einem geringen Maße bestimmt zusätzlich ein Speicherteilraum das Gesamtspeichervolumen, wobei der Speicherteilraum durch das sich ergebende tatsächlich Volumen von dem Absatz bis zu dem Ventilsitzbestimmt ist, so dass die Unterschiede in der Gesamtlänge der jeweiligen Injektoren mit den sich daraus ergebenden unterschiedlichen Gesamtspeichervolumen nicht gravierend ins Gewicht fallen. Die sich ergebenden Unterschiede können aber beispielsweise durch eine angepasste Einragtiefe der Nadelkörperführung in den Speicherraum ausgeglichen werden.In a further embodiment of the invention, the total storage volume of injectors with different lengths is approximately equal. The total storage volume becomes significantly determined by the actual volume of the storage space. In addition, to a lesser extent, a storage compartment determines the total storage volume, the storage compartment being determined by the resulting actual volume from the shoulder to the valve seat, so that the differences in the overall length of the respective injectors with the resulting total storage volumes are not significant fall. However, the resulting differences can be compensated for example by an adapted Einragtiefe the needle body guide into the storage space.

In Weiterbildung der Erfindung liegt das Verhältnis der Gesamtspeichervolumen eines kleinstmöglichen Injektors zu einem längst möglichen Injektors im Bereich von 0,8 bis 1,2, vorzugsweise im Bereich von 0,95 bis 1,05. Diese Ausgestaltung hat sich als besonders vorteilhaft erwiesen.In a further development of the invention, the ratio of the total storage volume of a smallest possible injector to a longest possible injector in the range of 0.8 to 1.2, preferably in the range of 0.95 to 1.05. This embodiment has proved to be particularly advantageous.

Zusammenfassend lassen sich durch die erfindungsgemäße Ausgestaltung folgende Vorteile erreichen:

  • Die Fördermenge der Hochdruckpumpe wird minimiert,
  • Die (Neu-) Startfreigabe bei einem niedrigerem Druck erfolgen,
  • Die Werkzeugvielfalt wird minimiert,
  • Es wird eine Verringerung der druckbeaufschlagten Fläche erreicht.
  • Das tdiff-Verhalten des Injektors wird verbessert.
  • Das Gesamtspeichervolumen innerhalb der Injektoren wird unabhängig von der Injektorlänge angenähert vereinheitlicht,
  • Es wird eine Vereinfachung des Fertigungsprozesses erzielt,
  • Der Startfreigabedruck wird unabhängig von der Injektorlänge verbessert und angenähert vereinheitlicht,
  • Es wird eine Steigerung der Druckschwellfestigkeit wegen einer weniger druckbeaufschlagten Fläche erzielt,
  • Die Fähigkeit einer Mehrfacheinspritzung wird erhöht (tdiff-Verhalten) und
  • Die Genauigkeit der Einspritzmengen wird gesteigert (tdiff-Verhalten).
In summary, the following advantages can be achieved by the embodiment according to the invention:
  • The flow rate of the high-pressure pump is minimized
  • The (re) start release takes place at a lower pressure,
  • The variety of tools is minimized,
  • It is achieved a reduction of the pressurized area.
  • The t diff behavior of the injector is improved.
  • The total storage volume within the injectors is approximated approximately independently of the injector length,
  • A simplification of the manufacturing process is achieved
  • The start release pressure is improved independently of the injector length and approximately unified,
  • An increase in pressure swelling strength is achieved because of a less pressurized area,
  • The ability of multiple injection is increased (t diff -behaviour) and
  • The accuracy of the injection quantities is increased (t diff -behaviour).

Weitere vorteilhafte Ausgestaltungen der Erfindung sind der Zeichnungsbeschreibung zu entnehmen, in der ein in den Figuren dargestelltes Ausführungsbeispiel der Erfindung näher beschrieben ist.Further advantageous embodiments of the invention are described in the drawings, in which an illustrated in the figures embodiment of the invention is described in detail.

Kurze Beschreibung der ZeichnungShort description of the drawing

Es zeigen:

Figur 1
einen Längsschnitt durch den erfindungsgemäßen Injektor und
Figur 2
jeweils einen Längsschnitt durch zwei Ventilkörper für unterschiedlich lang ausgebildete Injektoren.
Show it:
FIG. 1
a longitudinal section through the injector according to the invention and
FIG. 2
in each case a longitudinal section through two valve bodies for injectors of different lengths.

Ausführungsform der ErfindungEmbodiment of the invention

Figur 1 zeigt einen Kraftstoffinjektor, der insbesondere bei Common-Rail-Einspritzsystemen für selbstzündende Brennkraftmaschinen eingesetzt wird. Bei einem solchen Common-Rail-Einspritzsystem wird von einer Hochdruckpumpe Kraftstoff einem Hochdruckspeicher (Rail) zugeführt und in dem Hochdruckspeicher gespeichert. Der erfindungsgemäße Kraftstoffinjektor ist mit dem Hochdruckspeicher über eine Hochdruckleitung verbunden, die mit dem Anschlussstutzen 1 des Kraftstoffinjektors verschraubt ist. In dem Anschlussstutzen 1 ist ein Filter 2 eingesetzt, der mögliche Verunreinigungen in dem Kraftstoff von dem Kraftstoffinjektor fernhalten soll. FIG. 1 shows a fuel injector, which is used in particular in common rail injection systems for self-igniting internal combustion engines. In such a common rail injection system, a high-pressure pump supplies fuel to a high-pressure accumulator (rail) and stores it in the high-pressure accumulator. The fuel injector according to the invention is connected to the high-pressure accumulator via a high-pressure line, which is screwed to the connecting piece 1 of the fuel injector. In the connecting piece 1, a filter 2 is used, which is intended to keep possible impurities in the fuel from the fuel injector.

Der über den Anschlussstutzen 1 zugeführte Kraftstoff wird über einen Zulaufkanal 3 mit eingesetzter Drossel einem Steuerraum 4 zugeführt, der endseitig eines Nadelkörpers 5 in einer Nadelkörperführung 6 angeordnet ist. Die Nadelkörperführung 6 ist seinerseits in einen Ventilkörper 7 an einem Ventilkörperabsatz 20 anliegend angeordnet und festgelegt, wobei auch der Anschlussstutzen 1 in dem Ventilkörper 7 eingeschraubt ist. Weiterhin ist benachbart zu der Nadelkörperführung 6 beziehungsweise dem Ventilkörper 7 ein Aktormodul 8 angeordnet, dessen Funktion nachfolgend noch beschrieben wird.The supplied via the connecting piece 1 fuel is supplied via an inlet channel 3 with throttle inserted a control chamber 4, which is arranged end of a needle body 5 in a needle body guide 6. The needle body guide 6 is in turn arranged and fixed in a valve body 7 on a valve body paragraph 20, wherein the connecting piece 1 is screwed into the valve body 7. Furthermore, adjacent to the needle body guide 6 and the valve body 7, an actuator module 8 is arranged, whose function will be described below.

Gegenüberliegend zu dem Steuerraum 4 ist an dem Ventilkörper 7 eine Ventilkörperspitze 9 mittels einer Überwurfmutter 10 befestigt. Der Nadelkörper 5 erstreckt sich mit einer Nadelkörperspitze 11 bis in den endseitigen Bereich der Ventilkörperspitze 9 und bildet einen Ventilsitz 19, von dem in die Nadelkörperspitze 11 eingelassene Einspritzkanäle 12, durch die im geöffneten Zustand des Nadelkörpers 5 Kraftstoff in die Brennräume der Brennkraftmaschine eingespritzt wird, von der nachfolgend erläuterten Kraftstoffzuführung abgesperrt sind.Opposite to the control chamber 4, a valve body tip 9 is attached to the valve body 7 by means of a union nut 10. The needle body 5 extends with a needle body tip 11 into the end region of the valve body tip 9 and forms a valve seat 19, from the injection into the needle body tip 11 injection channels 12, by the open state of the needle body. 5 Fuel is injected into the combustion chambers of the internal combustion engine, are shut off by the fuel supply explained below.

Zur Kraftstoffzuführung zu dem den Einspritzkanälen 12 vorgeschalteten Ventilsitz 19, der von der Nadelkörperspitze 11 und der Ventilkörperspitze 9 gebildet wird, ist der Zulaufkanal 3 über einen Strömungskanal entlang des Nadelkörpers 5 mit einem Raum vor dem Ventilsitz 19 verbunden. In diesen Strömungskanal ist ein Speicherraum 16 in den Ventilkörper 7 umgebend den Nadelkörper 5 eingeschaltet. Weiterhin führt von einem Nadeldruckfederraum 18 eine ebenfalls nicht dargestellte Strömungsverbindung bis zu der Nadelkörperspitze 11 anschließend an den Ventilsitz 19. Der Nadelkörper 5 wird weiterhin von einer in dem Nadelkörperfederraum 18 angeordneten Nadelkörperfeder 13 in Richtung zu dem Ventilsitz 19 gedrückt und unterstützt somit die von dem in den Steuerraum 4 herrschenden Kraftstoffdruck ausgeübte Druckkraft auf den Nadelkörper 5.For fuel supply to the injection ports 12 upstream valve seat 19, which is formed by the needle body tip 11 and the valve body tip 9, the inlet channel 3 is connected via a flow channel along the needle body 5 with a space in front of the valve seat 19. In this flow channel, a storage space 16 in the valve body 7 surrounding the needle body 5 is turned on. Furthermore, from a needle pressure spring chamber 18 a likewise not shown flow connection to the needle body tip 11 subsequent to the valve seat 19. The needle body 5 is further pressed by a arranged in the needle body spring chamber 18 needle body spring 13 in the direction of the valve seat 19 and thus supports the of the in the control chamber 4 prevailing fuel pressure exerted pressure force on the needle body. 5

Um den Nadelkörper 5 und dessen Nadelkörperspitze 11 in die geöffnete Position zur Einspritzung von Kraftstoff durch die Einspritzkanäle 12 zu bewegen, wird der Kraftstoffdruck in den Steuerraum 4 soweit reduziert, bis der anstehende Kraftstoffdruck den Nadelkörper 5 gegen die Kraft der Nadelkörperfeder 13 in Richtung zu dem Steuerraum 4 drückt.In order to move the needle body 5 and the needle body tip 11 in the open position for injection of fuel through the injection channels 12, the fuel pressure in the control chamber 4 is reduced until the upcoming fuel pressure the needle body 5 against the force of the needle body spring 13 toward the Control room 4 presses.

Um den Kraftstoffdruck in dem Steuerraum 4 gezielt zu steuern, ist der Steuerraum 4 über einen Ablaufkanal 14 mit einer eingeschalteten Drossel mit einem von dem Aktormodul 8 betätigten Ventil 15 verbunden, wobei das Ventil 15 aktormodulseitig mit einem Niederdruckbereich des Kraftstoffsystems verschaltet ist. Wird das Ventil 15 von dem Aktormodul 8 in seine offene Position bewegt, strömt Kraftstoff aus dem Steuerraum 4 über den Ablaufkanal 14 durch das Ventil 15 in den Niederdruckbereich des Kraftstoffsystems und der Druck in dem Steuerraum 4 wird folglich reduziert. Dabei sind die Drossel in den Zulaufkanal 3 und dem Ablaufkanal 14 so abgestimmt, dass mehr Kraftstoff durch den Ablaufkanal 14 abströmen kann als durch den Zulaufkanal 3 in den Steuerraum 4 nachströmt.In order to control the fuel pressure in the control chamber 4 specifically, the control chamber 4 is connected via a flow channel 14 with an activated throttle to a valve 15 actuated by the actuator module 8, wherein the valve 15 is connected on the actuator module side to a low-pressure region of the fuel system. If the valve 15 is moved by the actuator module 8 in its open position, fuel flows from the control chamber 4 via the drain passage 14 through the valve 15 in the low pressure region of the fuel system and the pressure in the control chamber 4 is thus reduced. In this case, the throttle in the inlet channel 3 and the outlet channel 14 are tuned so that more fuel can flow through the drain channel 14 as nachströmt through the inlet channel 3 into the control chamber 4.

Bei den Öffnungs- und Schließvorgängen des Ventils 15 sowie der Einspritzkanäle 12 durch den Nadelkörper 5 werden Druckwellen ausgelöst, die die Einspritzmengengenauigkeit und die Mehrfacheinspritzfähigkeit direkt beeinflussen.In the opening and closing operations of the valve 15 and the injection channels 12 through the needle body 5 pressure waves are triggered, which directly affect the injection quantity accuracy and the Mehrfacheinspritzfähigkeit.

Diese Druckwellen breiten sich in dem gesamte zuvor definierten Strömungskanal bis zu dem Ventilsitz 19 und den anschließenden Einspritzkanälen 12 aus.These pressure waves propagate in the entire previously defined flow channel up to the valve seat 19 and the subsequent injection channels 12.

Um diese Druckwellen zumindest zu reduzieren, ist der Steuerraum 4 mit dem Speicherraum 16 verschaltet, der den Nadelkörper 5 umgebend in dem Ventilkörper 7 angeordnet ist. Der Speicherraum 16 erstreckt sich mit einem großen Durchmesser und folglich großen Volumen von dem Steuerraum 4 bis zu einem ersten Absatz 17 in dem Ventilkörper 7 (und ein weiterer Speicherteilraum weiter mit einem geringerem Durchmesser über den Nadelkörperfederraum 18 bis zu dem Ventilsitz 19).To reduce these pressure waves at least, the control chamber 4 is connected to the storage space 16, which is arranged around the needle body 5 in the valve body 7. The storage space 16 extends with a large diameter and consequently large volume from the control space 4 to a first shoulder 17 in the valve body 7 (and another storage space further having a smaller diameter over the needle body spring space 18 to the valve seat 19).

In Figur 2 sind zwei Ventilkörper 7 unterschiedlich langer Injektoren dargestellt. Die Länge y, die von dem Ventilkörperabsatz 20 bis zu dem Absatz 17 definiert ist, ist bei beiden Ventilkörpern 7 gleich lang.In FIG. 2 two valve body 7 different length injectors are shown. The length y, which is defined by the valve body paragraph 20 to the paragraph 17, is the same length in both valve bodies 7.

Claims (8)

  1. Method for producing an injector, in particular a fuel injector for an internal combustion engine, wherein the injector has an actuator module (8) controlling a valve (15) for adjusting a throughflow of a fluid medium, and wherein the valve (15) connects a control chamber (4) for controlling a control piston to a low-pressure region,
    characterized by interconnection of the control chamber (4) with a storage volume, wherein the volume chamber length of the storage volume is designed to be of equal length for injectors of different length, independently of the injector.
  2. Method according to Claim 1,
    characterized in that the storage volume is a storage chamber (16).
  3. Method according to Claim 2,
    characterized in that the storage chamber (16) is arranged in a valve body (7) of the injector.
  4. Method according to Claim 2 or 3,
    characterized in that the storage chamber (16) extends so as to adjoin a valve body shoulder (20), along the valve body (7) and so as to surround the control piston formed as a needle body (5).
  5. Method according to one of the preceding claims,
    characterized in that the total storage volume is greater than 1500 cm3, in particular greater than 2000 cm3.
  6. Method according to one of the preceding claims,
    characterized in that injectors with different overall lengths have a uniform volume chamber length y extending from the valve body shoulder (20) to a shoulder (17).
  7. Method according to one of the preceding claims,
    characterized in that the total storage volume of injectors with different lengths is approximately equal.
  8. Method according to one of the preceding claims,
    characterized in that the ratio of the total storage volume of a smallest possible injector in relation to a longest possible injector lies in the range from 0.8 to 1.2, preferably in the range from 0.95 to 1.05.
EP12728421.4A 2011-06-16 2012-05-23 Method of manufacturing of an injector, in particular of an fuel injector for an internal combustion engine Active EP2721282B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077618A DE102011077618A1 (en) 2011-06-16 2011-06-16 Injector, in particular fuel injector for an internal combustion engine
PCT/EP2012/059614 WO2012171767A1 (en) 2011-06-16 2012-05-23 Injector, in particular fuel injector for an internal combustion engine

Publications (2)

Publication Number Publication Date
EP2721282A1 EP2721282A1 (en) 2014-04-23
EP2721282B1 true EP2721282B1 (en) 2018-07-11

Family

ID=46320897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12728421.4A Active EP2721282B1 (en) 2011-06-16 2012-05-23 Method of manufacturing of an injector, in particular of an fuel injector for an internal combustion engine

Country Status (4)

Country Link
EP (1) EP2721282B1 (en)
CN (1) CN103635684B (en)
DE (1) DE102011077618A1 (en)
WO (1) WO2012171767A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10309311B4 (en) * 2003-03-04 2005-01-05 Siemens Ag Fuel high pressure storage
DE102007002758A1 (en) * 2006-04-04 2007-10-11 Robert Bosch Gmbh fuel injector
DE102007011317A1 (en) * 2007-03-08 2008-09-11 Robert Bosch Gmbh Fuel injector with an improved version of a control valve for controlling a nozzle needle
DE102007044356A1 (en) 2007-09-17 2009-03-19 Robert Bosch Gmbh injector
DE102009046582A1 (en) * 2009-11-10 2011-05-12 Robert Bosch Gmbh Method for manufacturing a fuel injection valve and fuel injection valve
DE102009055129A1 (en) * 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Fuel injector
DE102010003202A1 (en) * 2010-03-24 2011-09-29 Robert Bosch Gmbh Common rail injector with pressure compensated switching valve and additional storage volume

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2721282A1 (en) 2014-04-23
CN103635684A (en) 2014-03-12
CN103635684B (en) 2017-06-20
WO2012171767A1 (en) 2012-12-20
DE102011077618A1 (en) 2012-12-20

Similar Documents

Publication Publication Date Title
EP1485609B1 (en) Device for injecting fuel to stationary internal combustion engines
DE102006009070A1 (en) Fuel-injection valve for air-compressing, auto-igniting internal combustion engines comprises a valve with a corrugated washer partly surrounding the periphery of a bolt section of a valve bolt
EP2339164A1 (en) Pressure-equalised fuel injector with bypass and minimised valve area volumes
DE102008041730A1 (en) Injector with a particle filter arranged in front of the inlet throttle
EP2798194B1 (en) Fuel injection valve for internal combustion engines
WO2013026611A1 (en) Injector for a fluid having a fluid feed
EP1918570B1 (en) Fuel injector with accumulator volume segment
EP1126160B1 (en) Injector for injecting fuel in an internal combustion engine
DE102006015745A1 (en) Fuel injector especially for diesel engine has a solenoid operated valve with a bypass for enhanced switching speed
WO2011117029A1 (en) Common-rail injector having a pressure-balanced control valve and additional reservoir volume
EP1936180B1 (en) Fuel injector valve
DE102015226070A1 (en) fuel injector
EP2721282B1 (en) Method of manufacturing of an injector, in particular of an fuel injector for an internal combustion engine
DE102006033937A1 (en) fuel injector
DE10101358A1 (en) Fuel injection system
DE102008041167A1 (en) Fuel injector for storage-type injector systems for injecting pressurized fuel into combustion chamber of internal combustion engine, has injector housing, which comprises internal high-pressure volume for injecting highly pressurized fuel
DE102009046373A1 (en) Magnetic valve e.g. pressure-balanced valve for use in common rail-injector for injecting diesel into combustion chamber of diesel internal combustion engine, has damping chamber connected with low-pressure area by connection
EP1947324A2 (en) Fuel injector with integrated pressure intensifier
EP2267295A2 (en) Fuel injector
WO2002061266A2 (en) Valve for controlling liquids
DE10326260A1 (en) Fuel injection valve and method for its control
DE10160490A1 (en) Fuel injection device, fuel system and IC engine, has fuel flow rate to injector nozzle modified by buffer chamber in nozzle valve
WO2008055723A1 (en) Fuel injection device
DE102009027709A1 (en) Fuel injection valve
DE102008012637A1 (en) Fuel injector for injecting fuel into combustion chamber of internal-combustion engine, has injector body, which has fuel inlet, injection opening, nozzle needle and nozzle area

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140116

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20170224

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180206

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1017130

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180715

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012013024

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180711

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181111

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181012

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181011

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181011

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012013024

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

26N No opposition filed

Effective date: 20190412

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190523

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181111

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1017130

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190523

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120523

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180711

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230531

Year of fee payment: 12

Ref country code: FR

Payment date: 20230517

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230726

Year of fee payment: 12