EP2816219A1 - Control valve for a fuel injector - Google Patents

Control valve for a fuel injector Download PDF

Info

Publication number
EP2816219A1
EP2816219A1 EP14163848.6A EP14163848A EP2816219A1 EP 2816219 A1 EP2816219 A1 EP 2816219A1 EP 14163848 A EP14163848 A EP 14163848A EP 2816219 A1 EP2816219 A1 EP 2816219A1
Authority
EP
European Patent Office
Prior art keywords
guide
control valve
valve
valve sleeve
undercut
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.)
Granted
Application number
EP14163848.6A
Other languages
German (de)
French (fr)
Other versions
EP2816219B1 (en
Inventor
Christian Kramer
Markus Raithel
Stephan Stone
Roland Muenzel
Matthias Horn
Stephan Amelang
Andreas Rettich
Christian Faltin
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 EP2816219A1 publication Critical patent/EP2816219A1/en
Application granted granted Critical
Publication of EP2816219B1 publication Critical patent/EP2816219B1/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
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F02M63/0042—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing combined with valve seats of the lift valve type
    • 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
    • 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"
    • 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
    • F02M63/0073—Pressure balanced valves
    • 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
    • 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
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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

Definitions

  • the invention relates to a pressure-balanced control valve for a fuel injector of an internal combustion engine having the features of the preamble of claim 1.
  • a pressure compensated control valve for a fuel injector is off DE 10 2007 047 425 A1 known, in which a valve sleeve is guided axially movable on a guide pin.
  • the valve sleeve switchably limits a valve chamber to the outside, which is connected to a control chamber of a nozzle needle of the fuel injector via a drain hole.
  • a closing spring By a closing spring, the valve sleeve is pressed against a valve seat formed on a valve seat and thereby closes the valve chamber with respect to a low-pressure chamber.
  • a solenoid is actuated, the valve sleeve lifts off the valve seat due to electromagnetic forces.
  • About valve chamber and drain hole so the control chamber is connected to the low-pressure chamber, the pressure in the control chamber drops and the nozzle needle lifts from the nozzle needle seat and are injection openings in the combustion chamber of an internal combustion engine free.
  • a pressure balanced control valve for a fuel injector known in which a valve sleeve is guided axially movably on a guide pin.
  • the valve sleeve switchably limits a valve chamber to the outside, which is connected via bores in the guide pin with a control chamber of a nozzle needle of the fuel injector.
  • the valve sleeve has an annular groove, wherein the annular groove adjoins a sealing surface which cooperates with a valve seat of the guide pin.
  • the fuel injection valve according to the invention with the features of claim 1 minimizes wear between the guide pin and the valve sleeve. This is achieved in that in the guide region in which a guide surface of the valve sleeve and a guide surface of the guide pin cooperate, an undercut is formed in the guide surface of the valve sleeve.
  • the resulting leadership of the valve sleeve is divided into two areas along the longitudinal axis of the guide pin, and at the two ends of the guide portion each have a defined length is maintained at which contact between the guide pin and the valve sleeve is possible. A deflection of the guide pin can then have no punctual contact of the guide pin with the valve sleeve in the middle of the guide area result.
  • the defined lengths remain constant at the ends of the guide region over the entire stroke of the valve sleeve. If it then comes to a tilting or a deflection of the guide pin, the tribology is in the contact guide pin to valve sleeve more robust.
  • the undercut is formed, viewed axially, at least approximately in the middle of the guide region. This results in equally large resulting guides of the valve sleeve at the two ends of the guide area. The avoidance of the punctual contact of the guide pin with the valve sleeve in deflection of the guide pin is optimized.
  • the undercut is formed radially encircling.
  • a rotation of guide pin or valve sleeve about its longitudinal axis has it no negative effects on wear anymore; a rotation is not required.
  • the undercut is viewed in longitudinal section as a concave arc.
  • the contour of the concave arc can thus be adapted to a potential deflection of the guide pin on its bulging side. With a deflection of the guide pin, it would then come on its bulging side to an approximately constant gap height between the guide surfaces of the guide pin and valve sleeve. A uniform lubricating film structure would be the result and thus minimized solid contact and minimized wear in the two guide surfaces.
  • a preferred value for the height of the concave arc is 1 ⁇ m to 10 ⁇ m.
  • the undercut is viewed in longitudinal section as a rectangle. Compared with the embodiment with a concave arc of the rectangular undercut is easier to manufacture and the two leakage paths at the ends of the guide area are subjected to smaller manufacturing tolerances.
  • the flanks of the rectangular undercut are preferably provided with radii or chamfers.
  • a preferred value for the height of the rectangle is 10 ⁇ m.
  • a preferred value for the length of the rectangular undercut is 1 ⁇ 4 to 1 ⁇ 3 of the length of the entire guide area.
  • the undercut is preferably arranged in the middle of the guide region, so that the two remaining leakage paths at the two ends of the guide region are of equal length.
  • Fig. 1 schematically shows the essential parts of a control valve 30 according to the invention in longitudinal section, which is arranged in the injector body 50 of a fuel injector 100 .
  • the control valve 30 has a valve sleeve 1, a guide pin 2, a valve piece 3 and a closing spring 5 .
  • the closing spring 5 presses the valve sleeve 1 against a formed on the valve member 3 valve seat 4.
  • a force can be applied to the valve sleeve 1, by lifting the valve sleeve 1 from the valve seat 4, and so a gap frees .
  • a force can be applied to the valve sleeve 1, by lifting the valve sleeve 1 from the valve seat 4, and so a gap frees .
  • fuel from a control chamber 7, which is bounded by the valve piece 3 on the side facing away from the valve sleeve 1 , via a valve disposed in the 3 piece bore 8 and flow through the released gap in the low-pressure chamber 9 , which surrounds the valve sleeve 1 and connected to the not shown return system of the fuel injector 100 .
  • the opening movement of a not shown nozzle needle of the fuel injector 100 can be controlled.
  • the valve sleeve 1 is guided over a guide region 15 on the guide pin 2 .
  • the guide portion 15 has on the one hand, the valve sleeve 1, a guide surface of the valve sleeve 11 and the other part of the guide pins 2, a guide surface of the guide pin 12.
  • the guide surface of the valve sleeve 11, an undercut 20 is formed so that upon bending of the guide pin 2, a contact between the valve sleeve 1 and guide pin 2 in the middle of the guide portion 15 is avoided.
  • valve sleeve 1 is additionally guided in the appropriately designed valve piece 3 .
  • Fig. 2a shows an advantageous embodiment of the formed in the valve sleeve 1 undercut 20 as a concave arc with the height h.
  • the undercut 20 is formed over most of the guide portion 15 .
  • the processing of the undercut 20 is incorporated into an existing grinding process for the guide surface of the valve sleeve 11 .
  • the height h of the concave arc is ideally 1 .mu.m to 10 .mu.m.
  • Fig. 2b shows a further advantageous embodiment of the undercut 20 as a rectangle with chamfers 21, formed in the guide surface of the valve sleeve 11.
  • the undercut 20 of the guide portion 15 is divided into three sections 15a, 15b and 15c .
  • the portion 15b indicates the undercut 20, on which there can be no contact between the valve sleeve 1 and the guide pin 2 when the guide pin 2 deflects.
  • the partial regions 15a and 15c designate the two ends of the guide region 15, whose lengths remain constant over the entire stroke of the valve sleeve 1 .
  • the rectangular undercut 20 is preferably arranged at least approximately in the middle of the guide region 15 , extends over 1 ⁇ 4 to 1 ⁇ 3 the length of the guide region 15 and has a height h of approximately 10 ⁇ m.

Abstract

Steuerventil (30) für einen Kraftstoffinjektor (100), das in einem Injektorkörper (50) angeordnet ist, mit einer im Steuerventil (30) angeordneten Ventilhülse (1), die axial beweglich auf einem Führungsbolzen (2) innerhalb eines Führungsbereichs (15) geführt ist, in dem eine Führungsfläche der Ventilhülse (11) und eine Führungsfläche des Führungsbolzens (12) zusammenwirken. Die Führungsfläche der Ventilhülse (11) weist einen Hinterstich (20) auf.Control valve (30) for a fuel injector (100) which is arranged in an injector body (50) with a valve sleeve (1) arranged in the control valve (30), which is guided axially movably on a guide pin (2) within a guide region (15) is, in which a guide surface of the valve sleeve (11) and a guide surface of the guide pin (12) cooperate. The guide surface of the valve sleeve (11) has an undercut (20).

Description

Die Erfindung betrifft ein druckausgeglichenes Steuerventil für einen Kraftstoffinjektor einer Brennkraftmaschine mit den Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a pressure-balanced control valve for a fuel injector of an internal combustion engine having the features of the preamble of claim 1.

Stand der TechnikState of the art

Ein druckausgeglichenes Steuerventil für einen Kraftstoffinjektor ist aus DE 10 2007 047 425 A1 bekannt, bei dem eine Ventilhülse auf einem Führungsbolzen axial beweglich geführt ist. Die Ventilhülse begrenzt schaltbar eine Ventilkammer nach außen, die mit einem Steuerraum einer Düsennadel des Kraftstoffinjektors über eine Ablaufbohrung verbunden ist. Durch eine Schließfeder wird die Ventilhülse gegen einen an einem Ventilstück ausgebildeten Ventilsitz gepresst und verschließt dadurch die Ventilkammer gegenüber einem Niederdruckraum. Bei Betätigung einer Magnetspule hebt die Ventilhülse aufgrund elektromagnetischer Kräfte vom Ventilsitz ab. Über Ventilkammer und Ablaufbohrung wird so der Steuerraum mit dem Niederdruckraum verbunden, der Druck im Steuerraum fällt ab und die Düsennadel hebt vom Düsennadelsitz ab und gibt Einspritzöffnungen in den Brennraum einer Brennkraftmaschine frei.A pressure compensated control valve for a fuel injector is off DE 10 2007 047 425 A1 known, in which a valve sleeve is guided axially movable on a guide pin. The valve sleeve switchably limits a valve chamber to the outside, which is connected to a control chamber of a nozzle needle of the fuel injector via a drain hole. By a closing spring, the valve sleeve is pressed against a valve seat formed on a valve seat and thereby closes the valve chamber with respect to a low-pressure chamber. When a solenoid is actuated, the valve sleeve lifts off the valve seat due to electromagnetic forces. About valve chamber and drain hole so the control chamber is connected to the low-pressure chamber, the pressure in the control chamber drops and the nozzle needle lifts from the nozzle needle seat and are injection openings in the combustion chamber of an internal combustion engine free.

Desweiteren ist aus DE 10 2006 055 548 A1 ein druckausgeglichenes Steuerventil für einen Kraftstoffinjektor bekannt, bei dem eine Ventilhülse auf einem Führungsbolzen axial beweglich geführt ist. Die Ventilhülse begrenzt schaltbar eine Ventilkammer nach außen, die über Bohrungen im Führungsbolzen mit einem Steuerraum einer Düsennadel des Kraftstoffinjektors verbunden ist. Die Ventilhülse weist eine Ringnut auf, wobei sich die Ringnut an eine Dichtfläche anschließt, die mit einem Ventilsitz des Führungsbolzens zusammenwirkt. Durch eine Schließfeder wird die Ventilhülse schaltbar gegen den Ventilsitz des Führungsbolzens gepresst und verschließt dadurch die Ventilkammer gegenüber einem Niederdruckraum. Bei Betätigung einer Magnetspule hebt die Ventilhülse aufgrund elektromagnetischer Kräfte vom Ventilsitz ab.Furthermore, it is off DE 10 2006 055 548 A1 a pressure balanced control valve for a fuel injector known in which a valve sleeve is guided axially movably on a guide pin. The valve sleeve switchably limits a valve chamber to the outside, which is connected via bores in the guide pin with a control chamber of a nozzle needle of the fuel injector. The valve sleeve has an annular groove, wherein the annular groove adjoins a sealing surface which cooperates with a valve seat of the guide pin. By a closing spring, the valve sleeve is pressed against the valve seat of the guide pin switchable and thereby closes the valve chamber against a low-pressure chamber. When a solenoid is actuated, the valve sleeve lifts off the valve seat due to electromagnetic forces.

Bei den Steuerventilen aus DE 10 2007 047 425 A1 und DE 10 2006 055 548 A1 kann es aufgrund von Belagsbildungen im Führungsbereich an Führungsbolzen und/oder Ventilhülse, verursacht z. B. von Alterungspolymerbestandteilen oder Bioanteilen im Kraftstoff, zu Funktionsbeeinträchtigungen kommen.Off at the control valves DE 10 2007 047 425 A1 and DE 10 2006 055 548 A1 it may be due to deposits in the guide area on guide pin and / or valve sleeve caused z. B. from aging polymer constituents or bio-proportions in the fuel, to functional impairments.

Zur Vermeidung der Auswirkungen dieser Belagsbildungen ist aus DE 10 2011 004 186 A1 bekannt, dass die Belagsbildung im Führungsbereich zwischen einem Führungselement und einem Bolzen reduziert wird. Dies wird erreicht, indem die Oberfläche des Bolzens im Führungsbereich strukturiert ausgeführt ist.To avoid the effects of this deposit formation is off DE 10 2011 004 186 A1 It is known that the deposit formation in the guide area between a guide element and a bolt is reduced. This is achieved by the surface of the bolt in the guide area is structured.

Aufgrund der gestiegenen Anforderungen eines Kraftstoffinjektors hinsichtlich der höheren Drücke des eingespritzten Kraftstoffs kann es jedoch zunehmend zu einer Durchbiegung des Führungsbolzens kommen. Die Folge ist, dass zusätzlich zur Belagsbildung erhöhte Verschleißgefahr in der Mitte des Führungsbereichs sowohl an Führungsbolzen als auch an Ventilhülse besteht.Due to the increased demands of a fuel injector with regard to the higher pressures of the injected fuel, however, bending of the guide pin may increasingly occur. The consequence is that in addition to the formation of deposits there is an increased risk of wear in the middle of the guide area both on the guide pin and on the valve sleeve.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Kraftstoffeinspritzventil mit den Merkmalen des Patentanspruchs 1 minimiert den Verschleiß zwischen Führungsbolzen und Ventilhülse. Dies wird dadurch erreicht, dass im Führungsbereich, in dem eine Führungsfläche der Ventilhülse und eine Führungsfläche des Führungsbolzens zusammenwirken, in der Führungsfläche der Ventilhülse ein Hinterstich ausgebildet ist.The fuel injection valve according to the invention with the features of claim 1 minimizes wear between the guide pin and the valve sleeve. This is achieved in that in the guide region in which a guide surface of the valve sleeve and a guide surface of the guide pin cooperate, an undercut is formed in the guide surface of the valve sleeve.

Somit unterteilt sich die resultierende Führung der Ventilhülse in zwei Bereiche entlang der Längsachse des Führungsbolzens, und an den beiden Enden des Führungsbereichs bleibt jeweils eine definierte Länge erhalten, an der ein Kontakt zwischen Führungsbolzen und Ventilhülse möglich ist. Eine Durchbiegung des Führungsbolzens kann dann keine punktuelle Berührung des Führungsbolzens mit der Ventilhülse in der Mitte des Führungsbereichs zur Folge haben.Thus, the resulting leadership of the valve sleeve is divided into two areas along the longitudinal axis of the guide pin, and at the two ends of the guide portion each have a defined length is maintained at which contact between the guide pin and the valve sleeve is possible. A deflection of the guide pin can then have no punctual contact of the guide pin with the valve sleeve in the middle of the guide area result.

Wegen der Ausbildung des Hinterstichs an der Ventilhülse und nicht am Führungsbolzen selbst bleiben die definierten Längen an den Enden des Führungsbereichs über den gesamten Hub der Ventilhülse konstant. Kommt es dann zu einer Verkippung oder einer Durchbiegung des Führungsbolzens, ist die Tribologie im Kontakt Führungsbolzen zu Ventilhülse robuster.Because of the formation of the undercut on the valve sleeve and not on the guide pin itself, the defined lengths remain constant at the ends of the guide region over the entire stroke of the valve sleeve. If it then comes to a tilting or a deflection of the guide pin, the tribology is in the contact guide pin to valve sleeve more robust.

Weiterhin bleiben aufgrund der Ausbildung des Hinterstichs an der Ventilhülse die beiden Leckagepfade an den beiden Enden des Führungsbereichs konstant.Furthermore, due to the formation of the undercut on the valve sleeve, the two leakage paths at the two ends of the guide region remain constant.

In einer ersten Ausführungsform ist der Hinterstich axial betrachtet zumindest näherungsweise in der Mitte des Führungsbereichs ausgebildet. Dadurch entstehen gleich große resultierende Führungen der Ventilhülse an den beiden Enden des Führungsbereichs. Die Vermeidung der punktuellen Berührung des Führungsbolzens mit der Ventilhülse bei Durchbiegung des Führungsbolzens ist so optimiert.In a first embodiment, the undercut is formed, viewed axially, at least approximately in the middle of the guide region. This results in equally large resulting guides of the valve sleeve at the two ends of the guide area. The avoidance of the punctual contact of the guide pin with the valve sleeve in deflection of the guide pin is optimized.

In einer weiteren Ausführungsform ist der Hinterstich radial umlaufend ausgebildet. Eine Rotation von Führungsbolzen oder Ventilhülse um ihre Längsachse hat damit keine negativen Auswirkungen mehr auf den Verschleiß; eine Verdrehsicherung ist nicht erforderlich.In a further embodiment, the undercut is formed radially encircling. A rotation of guide pin or valve sleeve about its longitudinal axis has it no negative effects on wear anymore; a rotation is not required.

In einer weiteren Ausführungsform ist der Hinterstich im Längsschnitt betrachtet als konkaver Bogen ausgeführt. Die Kontur des konkaven Bogens kann so einer potenziellen Durchbiegung des Führungsbolzens auf seiner ausbeulenden Seite angepasst werden. Bei einer Durchbiegung des Führungsbolzens würde es dann auf seiner ausbeulenden Seite zu einer annähernd konstanten Spalthöhe zwischen den Führungsflächen von Führungsbolzen und Ventilhülse kommen. Ein gleichmäßiger Schmierfilmaufbau wäre die Folge und damit auch minimierter Festkörperkontakt und minimierter Verschleiß in den beiden Führungsflächen. Ein bevorzugter Wert für die Höhe des konkaven Bogens ist 1 µm bis 10 µm.In a further embodiment, the undercut is viewed in longitudinal section as a concave arc. The contour of the concave arc can thus be adapted to a potential deflection of the guide pin on its bulging side. With a deflection of the guide pin, it would then come on its bulging side to an approximately constant gap height between the guide surfaces of the guide pin and valve sleeve. A uniform lubricating film structure would be the result and thus minimized solid contact and minimized wear in the two guide surfaces. A preferred value for the height of the concave arc is 1 μm to 10 μm.

In einer weiteren Ausführungsform ist der Hinterstich im Längsschnitt betrachtet als Rechteck ausgeführt. Gegenüber der Ausführungsform mit konkavem Bogen ist der rechteckige Hinterstich einfacher zu fertigen und die beiden Leckagepfade an den Enden des Führungsbereiches sind mit kleineren Fertigungstoleranzen beaufschlagt. Die Flanken des rechteckigen Hinterstichs werden vorzugsweise mit Radien oder Fasen versehen. Ein bevorzugter Wert für die Höhe des Rechtecks ist 10 µm. Ein bevorzugter Wert für die Länge des rechteckigen Hinterstichs ist ¼ bis ⅓ der Länge des gesamten Führungsbereichs. Vorzugsweise ist der Hinterstich in der Mitte des Führungsbereichs angeordnet, so dass die beiden verbleibenden Leckagepfade an den beiden Enden des Führungsbereichs gleich lang sind.In a further embodiment, the undercut is viewed in longitudinal section as a rectangle. Compared with the embodiment with a concave arc of the rectangular undercut is easier to manufacture and the two leakage paths at the ends of the guide area are subjected to smaller manufacturing tolerances. The flanks of the rectangular undercut are preferably provided with radii or chamfers. A preferred value for the height of the rectangle is 10 μm. A preferred value for the length of the rectangular undercut is ¼ to ⅓ of the length of the entire guide area. The undercut is preferably arranged in the middle of the guide region, so that the two remaining leakage paths at the two ends of the guide region are of equal length.

Zeichnungdrawing

  • Fig. 1 zeigt einen Längsschnitt durch ein erfindungsgemäßes Steuerventil, wobei nur die wesentlichen Bereiche schematisch gezeigt sind. Fig. 1 shows a longitudinal section through a control valve according to the invention, wherein only the essential areas are shown schematically.
  • Fig. 2a zeigt einen Längsschnitt durch eine Ausführungsform der Ventilhülse, in dem der Hinterstich als konkaver Bogen ausgebildet ist. Fig. 2a shows a longitudinal section through an embodiment of the valve sleeve, in which the undercut is formed as a concave arc.
  • Fig.2b zeigt einen Längsschnitt durch eine Ausführungsform der Ventilhülse, in dem der Hinterstich als Rechteck mit Fasen in der Führungsfläche der Ventilhülse ausgebildet ist. 2b shows a longitudinal section through an embodiment of the valve sleeve, in which the undercut is formed as a rectangle with chamfers in the guide surface of the valve sleeve.
Beschreibungdescription

Fig. 1 zeigt schematisch die wesentlichen Teile eines erfindungsgemäßen Steuerventils 30 im Längsschnitt, das im Injektorkörper 50 eines Kraftstoffinjektors 100 angeordnet ist. Das Steuerventil 30 weist eine Ventilhülse 1, einen Führungsbolzen 2, ein Ventilstück 3 und eine Schließfeder 5 auf. Fig. 1 schematically shows the essential parts of a control valve 30 according to the invention in longitudinal section, which is arranged in the injector body 50 of a fuel injector 100 . The control valve 30 has a valve sleeve 1, a guide pin 2, a valve piece 3 and a closing spring 5 .

Die Schließfeder 5 drückt die Ventilhülse 1 gegen einen am Ventilstück 3 ausgebildeten Ventilsitz 4. Durch einen nicht dargestellten Aktor, z.B. einen Magneten, kann auf die Ventilhülse 1 eine Kraft aufgebracht werden, durch die die Ventilhülse 1 vom Ventilsitz 4 abhebt und so einen Spalt freigibt. Beispielsweise kann so unter Hochdruck stehender Kraftstoff von einem Steuerraum 7, der vom Ventilstück 3 auf der der Ventilhülse 1 abgewandten Seite begrenzt wird, über eine im Ventilstück 3 angeordnete Bohrung 8 und über den freigegebenen Spalt in den Niederdruckraum 9 fließen, der die Ventilhülse 1 umgibt und mit dem nicht dargestellten Rücklaufsystem des Kraftstoffinjektors 100 verbunden ist. Auf diese Weise kann z.B. die Öffnungsbewegung einer nicht dargestellten Düsennadel des Kraftstoffinjektors 100 gesteuert werden.The closing spring 5 presses the valve sleeve 1 against a formed on the valve member 3 valve seat 4. By means of a not shown actuator such as a magnet, a force can be applied to the valve sleeve 1, by lifting the valve sleeve 1 from the valve seat 4, and so a gap frees , For example, under high pressure fuel from a control chamber 7, which is bounded by the valve piece 3 on the side facing away from the valve sleeve 1 , via a valve disposed in the 3 piece bore 8 and flow through the released gap in the low-pressure chamber 9 , which surrounds the valve sleeve 1 and connected to the not shown return system of the fuel injector 100 . In this way, for example, the opening movement of a not shown nozzle needle of the fuel injector 100 can be controlled.

Die Ventilhülse 1 wird über einen Führungsbereich 15 auf dem Führungsbolzen 2 geführt. Über den Führungsbereich 15 weist einerseits die Ventilhülse 1 eine Führungsfläche der Ventilhülse 11 auf und andererseits der Führungsbolzen 2 eine Führungsfläche des Führungsbolzens 12. Erfindungsgemäß ist an der Führungsfläche der Ventilhülse 11 ein Hinterstich 20 ausgebildet, so dass bei Biegung des Führungsbolzens 2 ein Kontakt zwischen Ventilhülse 1 und Führungsbolzen 2 in der Mitte des Führungsbereichs 15 vermieden wird.The valve sleeve 1 is guided over a guide region 15 on the guide pin 2 . About the guide portion 15 has on the one hand, the valve sleeve 1, a guide surface of the valve sleeve 11 and the other part of the guide pins 2, a guide surface of the guide pin 12. According to the invention the guide surface of the valve sleeve 11, an undercut 20 is formed so that upon bending of the guide pin 2, a contact between the valve sleeve 1 and guide pin 2 in the middle of the guide portion 15 is avoided.

In anderen Ausgestaltungen wird die Ventilhülse 1 zusätzlich im entsprechend ausgebildeten Ventilstück 3 geführt.In other embodiments, the valve sleeve 1 is additionally guided in the appropriately designed valve piece 3 .

Fig. 2a zeigt eine vorteilhafte Ausführung des in der Ventilhülse 1 ausgebildeten Hinterstichs 20 als konkaver Bogen mit der Höhe h. Der Hinterstich 20 ist über den größten Teil des Führungsbereichs 15 ausgebildet. Vorzugsweise wird die Bearbeitung des Hinterstichs 20 in einen bestehenden Schleifprozess für die Führungsfläche der Ventilhülse 11 eingebunden. Die Höhe h des konkaven Bogens beträgt dabei idealerweise 1 µm bis 10 µm. Fig. 2a shows an advantageous embodiment of the formed in the valve sleeve 1 undercut 20 as a concave arc with the height h. The undercut 20 is formed over most of the guide portion 15 . Preferably, the processing of the undercut 20 is incorporated into an existing grinding process for the guide surface of the valve sleeve 11 . The height h of the concave arc is ideally 1 .mu.m to 10 .mu.m.

Fig. 2b zeigt eine weitere vorteilhafte Ausführung des Hinterstichs 20 als Rechteck mit Fasen 21, ausgebildet in der Führungsfläche der Ventilhülse 11. Durch den Hinterstich 20 wird der Führungsbereich 15 in drei Teilbereiche 15a, 15b und 15c unterteilt. Der Teilbereich 15b kennzeichnet den Hinterstich 20, an dem es bei Durchbiegung des Führungsbolzens 2 zu keinem Kontakt zwischen Ventilhülse 1 und Führungsbolzen 2 kommen kann. Die Teilbereiche 15a und 15c kennzeichnen die beiden Enden des Führungsbereichs 15, deren Längen über den gesamten Hub der Ventilhülse 1 konstant bleiben. Bei Anlage der Ventilhülse 1 an den Ventilsitz 4 des Ventilstücks 3 wird der Leckagepfad vom unter Hochdruck stehenden Steuerraum 7 in den Niederdruckraum 9 über die summierte Länge der beiden Teilbereiche 15a und 15c bestimmt. Fig. 2b shows a further advantageous embodiment of the undercut 20 as a rectangle with chamfers 21, formed in the guide surface of the valve sleeve 11. By the undercut 20 of the guide portion 15 is divided into three sections 15a, 15b and 15c . The portion 15b indicates the undercut 20, on which there can be no contact between the valve sleeve 1 and the guide pin 2 when the guide pin 2 deflects. The partial regions 15a and 15c designate the two ends of the guide region 15, whose lengths remain constant over the entire stroke of the valve sleeve 1 . When the valve sleeve 1 abuts against the valve seat 4 of the valve piece 3 , the leakage path from the high-pressure control chamber 7 into the low-pressure chamber 9 is determined over the summed length of the two partial regions 15a and 15c .

Vorzugsweise ist der rechteckige Hinterstich 20 zumindest näherungsweise in der Mitte des Führungsbereichs 15 angeordnet, verläuft über ¼ bis ⅓ der Länge des Führungsbereichs 15 und besitzt eine Höhe h von ca. 10 µm.The rectangular undercut 20 is preferably arranged at least approximately in the middle of the guide region 15 , extends over ¼ to ⅓ the length of the guide region 15 and has a height h of approximately 10 μm.

Claims (10)

Steuerventil 30 für einen Kraftstoffinjektor 100, das in einem Injektorkörper 50 angeordnet ist, mit einer im Steuerventil 30 angeordneten Ventilhülse 1, die axial beweglich auf einem Führungsbolzen 2 innerhalb eines Führungsbereichs 15 geführt ist, in dem eine Führungsfläche der Ventilhülse 11 und eine Führungsfläche des Führungsbolzens 12 zusammenwirken
dadurch gekennzeichnet,
dass die Führungsfläche der Ventilhülse 11 einen Hinterstich 20 aufweist.Control valve 30 for a fuel injector 100, which is arranged in an injector 50 , with a valve disposed in the control valve 30 1, which is guided axially movable on a guide pin 2 within a guide portion 15 in which a guide surface of the valve sleeve 11 and a guide surface of the guide pin 12 interact
characterized,
that the guide surface of the valve sleeve 11 has a undercut 20th Steuerventil 30 nach Anspruch 1, dadurch gekennzeichnet, dass der Hinterstich 20 zumindest näherungsweise in der Mitte des Führungsbereichs 15 ausgebildet ist.Control valve 30 according to claim 1, characterized in that the undercut 20 is formed at least approximately in the middle of the guide portion 15 . Steuerventil 30 nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Hinterstich 20 radial umlaufend ist.Control valve 30 according to claim 1 or 2, characterized in that the undercut 20 is radially encircling. Steuerventil 30 nach Anspruch 3, dadurch gekennzeichnet, dass der Hinterstich 20 im Längsschnitt als konkaver Bogen ausgeführt ist.Control valve 30 according to claim 3, characterized in that the undercut 20 is designed in longitudinal section as a concave arc. Steuerventil 30 nach Anspruch 4, dadurch gekennzeichnet, dass der konkave Bogen über den größten Teil des Führungsbereichs 15 verläuft.Control valve 30 according to claim 4, characterized in that the concave arc extends over the largest part of the guide region 15 . Steuerventil 30 nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass der konkave Bogen eine Höhe h von 1 µm bis 10 µm besitzt.Control valve 30 according to claim 4 or 5, characterized in that the concave arc has a height h of 1 .mu.m to 10 .mu.m. Steuerventil 30 nach Anspruch 3, dadurch gekennzeichnet, dass der Hinterstich 20 im Längsschnitt im Wesentlichen als Rechteck ausgeführt ist.Control valve 30 according to claim 3, characterized in that the undercut 20 is executed in longitudinal section substantially as a rectangle. Steuerventil 30 nach Anspruch 7, dadurch gekennzeichnet, dass das Rechteck an beiden Übergängen zur Führungsfläche der Ventilhülse 11 Radien oder Fasen 21 aufweist.Control valve 30 according to claim 7, characterized in that the rectangle has at both transitions to the guide surface of the valve sleeve 11 radii or chamfers 21 . Steuerventil 30 nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass das Rechteck über ¼ bis ⅓ der Länge des Führungsbereichs 15 verläuft.Control valve 30 according to claim 7 or 8, characterized in that the rectangle over ¼ to ⅓ the length of the guide portion 15 extends. Steuerventil 30 nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das Rechteck eine Höhe h von 5 µm bis 20 µm, vorzugsweise 10 µm, besitzt.Control valve 30 according to any one of claims 7 to 9, characterized in that the rectangle has a height h of 5 microns to 20 microns, preferably 10 microns.
EP14163848.6A 2013-06-21 2014-04-08 Control valve for a fuel injector Active EP2816219B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310211855 DE102013211855A1 (en) 2013-06-21 2013-06-21 Control valve for a fuel injector

Publications (2)

Publication Number Publication Date
EP2816219A1 true EP2816219A1 (en) 2014-12-24
EP2816219B1 EP2816219B1 (en) 2018-10-10

Family

ID=50440556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14163848.6A Active EP2816219B1 (en) 2013-06-21 2014-04-08 Control valve for a fuel injector

Country Status (2)

Country Link
EP (1) EP2816219B1 (en)
DE (1) DE102013211855A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202488A1 (en) * 2015-06-16 2016-12-22 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
WO2017089011A1 (en) * 2015-11-24 2017-06-01 Robert Bosch Gmbh Fuel injector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015203515A1 (en) * 2015-02-27 2016-09-01 Robert Bosch Gmbh Partial pressure compensated pressure control valve for a high-pressure accumulator
DE102015204515A1 (en) * 2015-03-12 2016-09-15 Robert Bosch Gmbh Control valve for a fuel injector

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021741A1 (en) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Fuel injector with pressure compensated control valve
DE102006055548A1 (en) 2006-11-24 2008-05-29 Robert Bosch Gmbh fuel injector
DE102007013245A1 (en) * 2007-03-20 2008-09-25 Robert Bosch Gmbh Pressure compensated switching valve
DE102007040248A1 (en) * 2007-08-27 2009-03-05 Robert Bosch Gmbh Control valve for a fuel injector
DE102007047425A1 (en) 2007-10-04 2009-04-09 Robert Bosch Gmbh Control valve for a fuel injector
DE102009029009A1 (en) * 2009-08-31 2011-03-03 Robert Bosch Gmbh Injector for injecting fuel
DE102011004186A1 (en) 2011-02-16 2012-08-16 Robert Bosch Gmbh Fuel injection component has element, which is arranged in bore of guide element, where element has structured surface in area between inlet area and outlet area of bore

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021741A1 (en) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Fuel injector with pressure compensated control valve
DE102006055548A1 (en) 2006-11-24 2008-05-29 Robert Bosch Gmbh fuel injector
DE102007013245A1 (en) * 2007-03-20 2008-09-25 Robert Bosch Gmbh Pressure compensated switching valve
DE102007040248A1 (en) * 2007-08-27 2009-03-05 Robert Bosch Gmbh Control valve for a fuel injector
DE102007047425A1 (en) 2007-10-04 2009-04-09 Robert Bosch Gmbh Control valve for a fuel injector
DE102009029009A1 (en) * 2009-08-31 2011-03-03 Robert Bosch Gmbh Injector for injecting fuel
DE102011004186A1 (en) 2011-02-16 2012-08-16 Robert Bosch Gmbh Fuel injection component has element, which is arranged in bore of guide element, where element has structured surface in area between inlet area and outlet area of bore

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016202488A1 (en) * 2015-06-16 2016-12-22 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
WO2017089011A1 (en) * 2015-11-24 2017-06-01 Robert Bosch Gmbh Fuel injector

Also Published As

Publication number Publication date
DE102013211855A1 (en) 2014-12-24
EP2816219B1 (en) 2018-10-10

Similar Documents

Publication Publication Date Title
EP1004066A1 (en) Electromagnetic hydraulic valve
EP2906815B1 (en) Valve for a pump
EP1567765B1 (en) Injection valve
DE102005059169A1 (en) Fuel injector with directly actuatable injection valve member
EP2816219B1 (en) Control valve for a fuel injector
EP3822475B1 (en) Valve for metering a fluid
WO2008061844A1 (en) Fuel injector
WO2016034402A1 (en) Proportional valve that can be actuated electromagnetically
DE102008035087B4 (en) Injector
WO2012113588A1 (en) Valve for a component of a fuel injection system, and fuel injector
WO2011141247A1 (en) Control valve of a fuel injection valve
DE10152268A1 (en) Injector
EP2630361B1 (en) Fuel injector
DE102008042531A1 (en) Valve arrangement for fuel high pressure injection, comprises electromagnets, anchor, sliding sleeve and housing provided with spraying holes, where interior element divides interior space of housing
DE102004010759A1 (en) Common rail injector
EP2824310A1 (en) Fuel injector valve for combustion engines
DE10050599B4 (en) Injection valve with a pump piston
DE10029297A1 (en) Valve for controling liquids has piezo actuator, dual piston hydraulic converter, valve closure element and spring element directly coupled to second piston of hydraulic converter
DE102010062077A1 (en) Valve device with an at least partially cylindrical movement element
DE102015214269A1 (en) Electromagnetically operated suction valve for a high-pressure pump and high-pressure pump
EP2957760A1 (en) Nozzle assembly for a fuel injector and fuel injector
EP2016276B1 (en) Fuel-injector with optimised return pipe
DE102012205696A1 (en) Fuel injector, particularly common rail injector, for injecting fuel into combustion chamber, has high-pressure chamber divided two subspaces by separating element that is movably arranged with nozzle needle in longitudinal axis direction
DE102007038138A1 (en) Control valve for a fuel injector
EP2256332A2 (en) Fuel injector with pressure intensifier piston

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: 20140408

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

AX Request for extension of the european patent

Extension state: BA ME

R17P Request for examination filed (corrected)

Effective date: 20150624

RBV Designated contracting states (corrected)

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

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: 20170714

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: 20180706

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

Ref country code: AT

Ref legal event code: REF

Ref document number: 1051536

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181015

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: 502014009673

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20181010

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: 20181010

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

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: 20181010

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: 20190210

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: 20190110

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: 20181010

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: 20181010

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: 20181010

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: 20181010

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: 20181010

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: 20190110

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: 20190210

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: 20190111

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: 20181010

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: 20181010

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: 20181010

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502014009673

Country of ref document: DE

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

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: 20181010

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: 20181010

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: 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: 20181010

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: 20181010

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: 20181010

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: 20181010

26N No opposition filed

Effective date: 20190711

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: 20181010

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190430

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

Effective date: 20190408

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

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: 20181010

Ref country code: LU

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

Effective date: 20190408

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: 20190408

Ref country code: LI

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

Effective date: 20190430

Ref country code: CH

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

Effective date: 20190430

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: 20190430

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: 20181010

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

Ref country code: IE

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

Effective date: 20190408

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1051536

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190408

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: 20190408

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: 20181010

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

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: 20181010

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: 20140408

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: 20181010

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

Ref country code: IT

Payment date: 20220429

Year of fee payment: 9

Ref country code: FR

Payment date: 20220420

Year of fee payment: 9

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

Ref country code: DE

Payment date: 20220627

Year of fee payment: 9

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502014009673

Country of ref document: DE

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

Ref country code: FR

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

Effective date: 20230430

Ref country code: DE

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

Effective date: 20231103