EP3359805B1 - Fluid-injection device for internal combustion engines - Google Patents

Fluid-injection device for internal combustion engines Download PDF

Info

Publication number
EP3359805B1
EP3359805B1 EP16781708.9A EP16781708A EP3359805B1 EP 3359805 B1 EP3359805 B1 EP 3359805B1 EP 16781708 A EP16781708 A EP 16781708A EP 3359805 B1 EP3359805 B1 EP 3359805B1
Authority
EP
European Patent Office
Prior art keywords
valve needle
spring element
valve
spring
injection device
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
EP16781708.9A
Other languages
German (de)
French (fr)
Other versions
EP3359805B8 (en
EP3359805A1 (en
Inventor
Dejan Jovovic
Anatoliy Lyubar
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.)
Vitesco Technologies GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP3359805A1 publication Critical patent/EP3359805A1/en
Application granted granted Critical
Publication of EP3359805B1 publication Critical patent/EP3359805B1/en
Publication of EP3359805B8 publication Critical patent/EP3359805B8/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
    • F02M63/007—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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • F02M63/0022—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures the armature and the valve being allowed to move relatively to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs

Definitions

  • the invention relates to a fluid injection device for internal combustion engines, as is known, for example, for direct fuel injection in self-igniting internal combustion engines.
  • a fuel injection valve is known in which the valve needle is guided in a middle section with very little clearance in the pressure chamber.
  • lateral slits are provided on the valve needle.
  • the components, in particular the valve needle and the pressure chamber must be worked very precisely, which leads to increased costs in the production, since the machining of the inside of a bore is always associated with great effort.
  • valve needle a precise guidance of the valve needle is sought in order to achieve a high accuracy in the metering of the fuel and a symmetrical atomization of the fuel.
  • a precise guidance of the valve needle reduces the wear on the valve seat.
  • DE 10 2008 012 356 A1 discloses a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine.
  • EP 1 431 569 A2 discloses a fuel injector, in particular for direct injection of fuel into a combustion chamber of an internal combustion engine.
  • DE 100 24 703 A1 discloses an injection assembly for a fuel rail injection system of an internal combustion engine.
  • a fluid injection device for internal combustion engines is specified, in particular a fluid injector.
  • the fluid injection device is exemplified example, a fuel injection device, in particular a fuel injector.
  • the fluid injector includes a valve body in which a valve needle is slidably disposed along a longitudinal axis of the valve body and cooperates with a valve seat to expose or close a fluid outlet.
  • the fluid outlet is a fuel outlet.
  • the fluid injection device has at least one spring element as a guide of the valve needle, which is arranged between the valve body and the valve needle and by means of which the valve needle is supported on the valve body.
  • the spring element is arranged in the radial direction between the valve needle and a circumferential side wall of the valve body.
  • the spring element in particular bridges the radial gap between the valve needle and the side wall.
  • the circumferential side wall delimits the cavity of the valve body, through which fluid flows from an inlet of the fluid injector to the fluid outlet and in which the valve needle is arranged, in particular in the radial direction.
  • the spring element is compressible in particular in the radial direction.
  • the fact that the spring element constitutes a guide of the valve needle is understood in particular to mean that the spring element prevents or at least largely prevents tilting of the valve needle with respect to the longitudinal axis during operation of the fluid injection device.
  • the valve needle is centered by means of the spring element with respect to the longitudinal axis and guided axially.
  • valve needle is therefore not directly guided by rigid body and in particular not directly by housing parts, but for guiding serves at least one spring element, which in turn is connected to the valve body.
  • the needle does not have to be guided without play. Rather, the at least one spring element conveys management forces-in particular radially directed management forces-between the valve needle and the valve body. If the spring element is designed such that these guiding forces are symmetrical, precise guidance of the valve needle is possible.
  • a valve body is understood as meaning a housing part or a component fixedly connected to a housing part of the fluid injection device, which surrounds the fluid-filled interior space in the lower area of the fluid injection device - which is in particular the cavity of the valve body - and on the valve body the valve needle is guided.
  • a support of the valve needle on the valve body by the spring element is understood here and below that a force transmission from the valve needle to the valve body and vice versa by the spring element is possible.
  • the spring element exerts restoring forces on the valve needle, which effect a centered guidance of the valve needle.
  • the restoring forces expediently act on the valve needle, in particular in the radial direction.
  • the spring element in particular the radial restoring forces opposing forces on the valve body, in particular on its side wall. Emotional can exert the spring element in one embodiment, in addition axial restoring forces on the valve needle.
  • the at least one spring element has a bias, in the fully assembled state of the fluid injection device and regardless of the position of the valve, i. from the position of the valve needle.
  • the spring element is biased in the radial direction. For example, it is compressed in the radial direction in the radial gap between the valve needle and the side wall of the valve body clamped.
  • the bias also prevents over time a particular radial clearance between the spring and the valve body or the valve needle is formed, which would prevent safe guidance of the valve needle.
  • the at least one spring element is designed as a round helical spring and is supported with its inner circumference on the valve needle and with its outer circumference on the valve body, or the at least one spring element is designed as a spider spring.
  • the spring element has the outer contours of a torus, which is formed by a helical spring.
  • the coil spring has a torus as an envelope.
  • the turns of the helical spring may conveniently be wound around a curved and closed centerline, especially about a circular centerline, which is particularly the centerline of the torus.
  • the center line is expediently only an imaginary line.
  • Such a spring element is suitable to effect a symmetrical restoring force on the valve needle and thus a secure guidance.
  • the spring element has an inner circumference, with which it is supported on the valve needle, and a number of struts, with which it is supported on the valve body.
  • a spider spring is understood in particular a spring having an annular base body and a plurality of spring struts, which extend from the main body radially outward.
  • the main body preferably has a passage, in particular a central opening, which defines the inner periphery, and through which the valve needle extends.
  • the struts are preferably bent so that they not only extend radially outwards from the base body, but at the same time extend axially beyond the base body.
  • Such a spring element is also suitable for effecting a symmetrical restoring force and thus reliable guidance of the valve needle. It is very easy to install.
  • At least two spring elements are provided, which are designed as helical springs and spaced along the circumference of the valve needle between the valve needle and the valve body are arranged, in particular opposite each other.
  • the degree of symmetry of the forces acting on the valve needle forces can be increased by the fact that more spring elements along the circumference of the valve needle are arranged, for example 3, 4, 5 or 6 spring elements which are distributed symmetrically in particular in the circumferential direction.
  • a guide of the valve needle can be achieved by means of particularly simple components.
  • Fuel can easily pass through both a coil spring and a spider spring. A particularly large hydraulic diameter can be achieved, so that no further Means are required for a fuel passage through the interior of the fluid injection device.
  • At least one first spring element on a side facing the fluid outlet
  • the first and second spring members are adjacent opposite axial ends of the valve needle.
  • a guide of the valve needle at at least two points, namely at the top and bottom of the valve needle is provided.
  • the leadership is thus particularly stable.
  • the risk of tilting the valve needle is particularly low.
  • a first round coil spring may be provided on a portion of the valve needle facing the fluid outlet and a second round coil spring on a portion of the valve needle remote from the fluid outlet.
  • various spring elements may be used, such as a round coil spring on a portion of the valve needle facing the fluid outlet, and a spider spring on a portion of the valve needle remote from the fluid outlet.
  • At least one spring element is arranged on a middle section of the valve needle between a section facing the fluid outlet and a section of the valve needle remote from the fluid outlet.
  • the geometric center of gravity of the spring element relative to the geometric center of gravity of the valve needle by 30% or less, in particular by 20% or less of the axial extent of the valve needle is arranged offset in the axial direction. This spring element allows a guide of the valve needle in the central portion, so that a particularly accurate axial guidance of the valve needle can be achieved.
  • This guide can be provided as a sole guide of the valve needle, in particular if a guide of the valve needle is realized in any other section anyway by the geometry of the fluid injection device, for example on Valve seat.
  • the guide in the middle section of the valve needle may also be provided in addition to a guide on a portion of the valve needle facing the fluid outlet and on a portion of the valve needle remote from the fluid outlet.
  • the at least one spring element can be welded or otherwise firmly connected to an outer wall of the valve needle and / or an inner wall of the valve body.
  • a round coil spring may be welded at its inner periphery to the valve needle and / or at its outer periphery to the valve body.
  • a spider spring may be welded at its inner periphery to the valve needle and / or to its struts with the valve body.
  • the at least one spring element can also be welded only to the valve needle or the valve body and slide along the valve body or the valve needle.
  • the at least one spring element is formed of a corrosion-resistant spring steel, wherein the corrosion resistance refers to the fuel used, with which the spring element is in contact.
  • FIG. 1 shows a fluid injection device 1 according to a first embodiment of the invention.
  • the present fluid injection apparatus 1 is, for example, a fuel injector, in particular for injecting fuel into the intake tract of an internal combustion engine.
  • a urea injector for injecting a urea solution for the exhaust aftertreatment.
  • the fluid injection device 1 has a valve 3 with a valve needle 5, a ball-shaped tip 7 and a valve seat 9. In the closed state, the tip 7 is pressed by the force of a return spring 30 on the valve seat 9 and thus closes the nozzle 11.
  • a valve housing - the valve body 13 - surrounds the valve 3 and the nozzle shaft 15, which is formed as a cavity within the valve body 13 and is filled with fuel during operation.
  • the nozzle 11 forms a fluid outlet of the fluid injector 1, i. present e.g. a fuel outlet.
  • an inlet chamber 19 which is formed by the inlet tube 18 and which is in flow communication with the nozzle shaft 15.
  • a filter 29 is arranged for the fuel, the positioning of the bias of the return spring 30 is adjustable.
  • the inlet chamber 19 and the nozzle stem 15 are filled with the fuel to be injected.
  • the fluid injection device 1 To inject the To allow fuel through the nozzle 11, the fluid injection device 1 to an electromagnetic actuator.
  • the electromagnetic actuator comprises a coil 21, an armature 23, a pole piece 25 and a non-magnetic sleeve 27 which is pressed onto one end of the pole piece 25.
  • the armature 23 is displaceable in the longitudinal direction of the fluid injection device 1 and in the present case firmly connected to the valve needle 5. So he takes the valve needle 5 with it when it moves axially.
  • the fluid injection device 1 has a guide of the valve needle 5 by a spring element 17, which is arranged within the nozzle shaft 15.
  • the spring element 17 is designed as a round helical spring, whose windings are wound around a closed, imaginary center line circulating around the longitudinal axis 34 in a circular manner.
  • FIG. 2 shows a detail of the fluid injection device 1 with the spring element 17 in detail. In this case, only half of the fluid injection device 1 above the longitudinal axis 34 is shown for the sake of simplicity.
  • the overall diameter of the spring element 17 is slightly larger than the diameter of the nozzle shaft 15, so that it can be introduced into the nozzle shaft 15 with a slight bias. Its inner diameter may be slightly smaller in the relaxed state than the outer diameter of the valve needle 5, so that it is also biased relative to the valve needle 5.
  • the spring element 17 is after insertion into the nozzle shaft 15 in the radial gap 16 between the valve needle 5 and a circumferential about the longitudinal axis 34
  • Side wall 14 of the valve body 13 is arranged. It is supported with its inner circumference on the valve needle 5 and with its outer circumference on the valve body 13. Thus, it bridges the radial gap between the valve needle 5 and the valve body 13 and exerts radially inwardly directed restoring forces on the valve needle 5.
  • the spring element 17 exerts radially outwardly directed opposing forces on the side wall 14 of the valve body 13 in the region of the nozzle shaft.
  • the valve needle 5 is centered in the region of the nozzle shaft 15 on the longitudinal axis 34 and axially guided by the spring element 17.
  • a round coil spring is provided as a guide of the valve needle 5.
  • This spring element 17 is arranged in a portion of the valve needle facing the fluid outlet, namely in the axial end region of the valve needle 5 immediately in front of the tip 7.
  • FIGS. 1 and 2 Further guides of the valve needle by spring elements 17 are in the FIGS. 1 and 2 not shown.
  • the end facing away from the tip 7 of the valve needle 5 is guided axially by means of the armature 23.
  • the armature 23 may be in sliding contact with the sleeve 27 and / or the valve body 3.
  • FIG. 3 shows a schematic diagram of a section of a fluid injection device 1 according to another embodiment of the invention, with the first embodiment according to the FIGS. 1 and 2 could be combined.
  • a spring element 17 is disposed at a portion of the valve needle 5 remote from the fluid outlet.
  • the spring element 17 is also formed in this embodiment as a round coil spring. It is welded in the points marked with P with the valve needle 5 and with the valve body 13. Such a welding of the spring element 17 can also in the in the FIGS. 1 and 2 However, for the sake of clarity, it is not shown.
  • the spring element 17 is inserted under prestress in the valve body 13. It therefore exerts radial forces indicated by the arrows 32 on the valve needle 5 or the side wall 14 of the valve body 13. These forces cause an axial guidance of the valve needle 5 in the valve body 13 and center the valve needle 5, in particular on the longitudinal axis 34.
  • FIG. 4 shows a spring element 17, which is used in a further embodiment of the fluid injection device 1 in plan view along the longitudinal axis 34th
  • the spring element 17 is formed in this embodiment as a spider spring and has an annular base body 33 with an inner circumference 35 which surrounds a passage 37. From the annular base body 33 spring struts 36 extend outwards. In addition, the struts 36 are bent so that they extend away from the main body 33 in the axial direction and protrude axially beyond this. Present, the struts 36 have a C-shaped curve (see Fig. 5 ).
  • FIG. 5 shows the fluid injection device 1 according to an embodiment of the invention with the in FIG. 4
  • the spring element 17 is arranged such that the valve needle 5 extends through the passage 37 and the inner circumference 35 of the spring element 17 rests against the valve needle 5. Along the inner circumference 35, the spring element 17 is welded to the valve needle 5.
  • the spring element 17 With its struts 36, the spring element 17 is supported on the valve body 13. Since the spring element 17 is introduced under bias in the valve body 13, it exercises in the basis of FIG. 3 explained manner forces on the valve body 13 and the valve needle 5, which cause a guide of the valve needle 5.
  • valve needle is in all embodiments shown along the longitudinal axis 34 movable as far as it is necessary for the opening and closing of the valve.
  • spring elements 17 in the form of round coil springs and in the form of spider springs or differently designed spring elements can be combined with each other so that one of the spring elements 17 is arranged on a section of the nozzle needle 5 facing the fluid outlet and at least one further, differently designed spring element 17 on one from the fluid outlet remote portion of the nozzle needle 5 is arranged.

Description

Die Erfindung betrifft eine Fluid-Einspritzvorrichtung für Brennkraftmaschinen, wie sie beispielsweise für die Kraftstoffdirekteinspritzung in selbstzündenden Brennkraftmaschinen bekannt ist.The invention relates to a fluid injection device for internal combustion engines, as is known, for example, for direct fuel injection in self-igniting internal combustion engines.

Aus der DE 100 24 703 A1 ist ein Kraftstoffeinspritzventil bekannt, bei dem die Ventilnadel in einem mittleren Abschnitt mit sehr geringem Spiel im Druckraum geführt ist. Um ein Hindurchtreten von Kraftstoff zu ermöglichen, sind seitliche Anschliffe an der Ventilnadel vorgesehen. Bei einer derartigen Bauform müssen die Bauteile, insbesondere die Ventilnadel und der Druckraum, sehr präzise gearbeitet werden, was zu erhöhten Kosten in der Herstellung führt, da die Bearbeitung der Innenseite einer Bohrung stets mit hohem Aufwand verbunden ist.From the DE 100 24 703 A1 a fuel injection valve is known in which the valve needle is guided in a middle section with very little clearance in the pressure chamber. To allow passage of fuel, lateral slits are provided on the valve needle. In such a design, the components, in particular the valve needle and the pressure chamber, must be worked very precisely, which leads to increased costs in the production, since the machining of the inside of a bore is always associated with great effort.

Eine präzise Führung der Ventilnadel wird jedoch angestrebt, um eine hohe Genauigkeit in der Dosierung des Kraftstoffs sowie eine symmetrische Zerstäubung des Kraftstoffs zu erzielen. Zudem verringert eine präzise Führung der Ventilnadel den Verschleiß am Ventilsitz.However, a precise guidance of the valve needle is sought in order to achieve a high accuracy in the metering of the fuel and a symmetrical atomization of the fuel. In addition, a precise guidance of the valve needle reduces the wear on the valve seat.

DE 10 2008 012 356 A1 offenbart eine Kraftstoffeinspritzvorrichtung zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine. EP 1 431 569 A2 offenbart ein Brennstoffeinspritzventil, insbesondere zum direkten Einspritzen von Brennstoff in einen Brennraum einer Brennkraftmaschine. DE 100 24 703 A1 offenbart eine Einspritzanordnung für ein Kraftstoff-Spreichereinspritzsystem einer Verbrennungsmaschine. DE 10 2008 012 356 A1 discloses a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine. EP 1 431 569 A2 discloses a fuel injector, in particular for direct injection of fuel into a combustion chamber of an internal combustion engine. DE 100 24 703 A1 discloses an injection assembly for a fuel rail injection system of an internal combustion engine.

Es ist eine Aufgabe der vorliegenden Erfindung, eine Fluid-Einspritzvorrichtung für Brennkraftmaschinen anzugeben, die eine präzise Führung der Ventilnadel aufweist, gleichzeitig jedoch robust und kostengünstig ist.It is an object of the present invention to provide a fluid injection device for internal combustion engines, which has a precise guidance of the valve needle, but at the same time is robust and inexpensive.

Diese Aufgabe wird gelöst durch den Gegenstand des unabhängigen Anspruchs. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.This object is solved by the subject matter of the independent claim. Advantageous embodiments and modifications of the invention are the subject of the dependent claims.

Gemäß einem Aspekt der Erfindung wird eine Fluid-Einspritzvorrichtung für Brennkraftmaschinen angegeben, insbesondere ein Fluidinjektor. Die Fluid-Einspritzvorrichtung ist beispiels weise eine Kraftstoffeinspritzeinrichtung, insbesondere ein Kraftstoffinjektor.According to one aspect of the invention, a fluid injection device for internal combustion engines is specified, in particular a fluid injector. The fluid injection device is exemplified example, a fuel injection device, in particular a fuel injector.

Die Fluid-Einspritzvorrichtung weist einen Ventilkörper auf, in dem eine Ventilnadel entlang einer Längsachse des Ventilkörpers verschiebbar angeordnet ist und mit einem Ventilsitz zusammenwirkt, um einen Fluidauslass freizugeben oder zu verschließen. Im Fall einer Kraftstoffeinspritzeinrichtung ist der Fluidauslass ein Kraftstoffauslass. Die Fluid-Einspritzvorrichtung weist zumindest ein Federelement als Führung der Ventilnadel auf, das zwischen dem Ventilkörper und der Ventilnadel angeordnet ist und mittels dessen sich die Ventilnadel am Ventilkörper abstützt.The fluid injector includes a valve body in which a valve needle is slidably disposed along a longitudinal axis of the valve body and cooperates with a valve seat to expose or close a fluid outlet. In the case of a fuel injector, the fluid outlet is a fuel outlet. The fluid injection device has at least one spring element as a guide of the valve needle, which is arranged between the valve body and the valve needle and by means of which the valve needle is supported on the valve body.

Insbesondere ist das Federelement in radialer Richtung zwischen der Ventilnadel und einer umlaufenden Seitenwand des Ventilkörpers angeordnet. Das Federelement überbückt insbesondere den radialen Spalt zwischen der Ventilnadel und der Seitenwand. Die umlaufende Seitenwand begrenzt insbesondere den Hohlraum des Ventilkörpers, durch den Fluid von einem Einlass des Fluidinjektors zum Fluid-Auslass strömt und in dem die Ventilnadel angeordnet ist, und zwar insbesondere in radialer Richtung.In particular, the spring element is arranged in the radial direction between the valve needle and a circumferential side wall of the valve body. The spring element in particular bridges the radial gap between the valve needle and the side wall. In particular, the circumferential side wall delimits the cavity of the valve body, through which fluid flows from an inlet of the fluid injector to the fluid outlet and in which the valve needle is arranged, in particular in the radial direction.

Das Federelement ist insbesondere in radialer Richtung komprimierbar. Darunter, dass das Federelement eine Führung der Ventilnadel darstellt, wird insbesondere verstanden, dass das Federelement ein Verkippen der Ventilnadel gegenüber der Längsachse im Betrieb der Fluid-Einspritzvorrichtung verhindert oder zumindest weitgehend verhindert. Vorzugsweise ist die Ventilnadel mittels des Federelements bezüglich der Längsachse zentriert und axial geführt.The spring element is compressible in particular in the radial direction. The fact that the spring element constitutes a guide of the valve needle is understood in particular to mean that the spring element prevents or at least largely prevents tilting of the valve needle with respect to the longitudinal axis during operation of the fluid injection device. Preferably, the valve needle is centered by means of the spring element with respect to the longitudinal axis and guided axially.

Die Ventilnadel wird demnach nicht direkt durch starre Körper und insbesondere nicht direkt durch Gehäuseteile geführt, sondern zur Führung dient zumindest ein Federelement, das wiederum mit dem Ventilkörper verbunden ist.The valve needle is therefore not directly guided by rigid body and in particular not directly by housing parts, but for guiding serves at least one spring element, which in turn is connected to the valve body.

Das hat den Vorteil, dass eine besonders hohe Genauigkeit bei der Herstellung der Bauteile nicht erforderlich ist. Die Nadel muss nicht spielfrei geführt werden. Vielmehr vermittelt das zumindest eine Federelement Führungskräfte - insbesondere radial gerichtete Führungskräfte - zwischen der Ventilnadel und dem Ventilkörper. Wenn das Federelement derart ausgestaltet wird, dass diese Führungskräfte symmetrisch sind, ist eine präzise Führung der Ventilnadel möglich.This has the advantage that a particularly high accuracy in the manufacture of the components is not required. The needle does not have to be guided without play. Rather, the at least one spring element conveys management forces-in particular radially directed management forces-between the valve needle and the valve body. If the spring element is designed such that these guiding forces are symmetrical, precise guidance of the valve needle is possible.

Diese Lösung ist aufgrund des vorhandenen Spiels der Bauteile verhältnismäßig kostengünstig. Zudem ist die Kraftstoffzuführung zum Fluidauslass unproblematisch. Insbesondere ist mittels des Federelements ein besonders großer hydraulischer Durchmesser des Hohlraums des Ventilkörpers im Bereich der Führung erzielbar. Dadurch wird zudem eine größere Designfreiheit der Fluid-Einspritzvorrichtung erzielt. Insbesondere kann beispielsweise auf die Ausbildung von axialen Fluid-Kanälen im Bereich der Führung - z.B. mittels Abflachungen der Ventilnadel oder der Seitenwand des Ventilkörpers - verzichtet sein.This solution is relatively inexpensive due to the existing play of the components. In addition, the fuel supply to the fluid outlet is not a problem. In particular, a particularly large hydraulic diameter of the cavity of the valve body in the region of the guide can be achieved by means of the spring element. This also achieves greater design freedom of the fluid injector. In particular, for example, the formation of axial fluid channels in the region of the guide - e.g. by flattening the valve needle or the side wall of the valve body - be omitted.

Unter einem Ventilkörper wird hier und im Folgenden ein Gehäuseteil oder ein fest mit einem Gehäuseteil der Fluid-Einspritzvorrichtung verbundenes Bauteil verstanden, das den fluid-gefüllten Innenraum im unteren Bereich der Fluid-Einspritzvorrichtung - das ist insbesondere der Hohlraum des Ventilkörpers - umgibt und an dem die Ventilnadel geführt wird.Here, and hereinafter, a valve body is understood as meaning a housing part or a component fixedly connected to a housing part of the fluid injection device, which surrounds the fluid-filled interior space in the lower area of the fluid injection device - which is in particular the cavity of the valve body - and on the valve body the valve needle is guided.

Unter einer Abstützung der Ventilnadel am Ventilkörper durch das Federelement wird hier und im Folgenden verstanden, dass eine Kraftübertragung von der Ventilnadel auf den Ventilkörper und umgekehrt durch das Federelement möglich ist. Insbesondere übt das Federelement Rückstellkräfte auf die Ventilnadel aus, die eine zentrierte Führung der Ventilnadel bewirken. Die Rückstellkräfte wirken zweckmäßig insbesondere in radialer Richtung auf die Ventilnadel. Zugleich übt das Federelement insbesondere den radialen Rückstellkräften entgegengesetzte Kräfte auf den Ventilkörper, insbesondere auf dessen Seitenwand aus. Bewegt kann das Federelement bei einer Ausgestaltung zusätzlich axiale Rückstellkräfte auf die Ventilnadel ausüben.A support of the valve needle on the valve body by the spring element is understood here and below that a force transmission from the valve needle to the valve body and vice versa by the spring element is possible. In particular, the spring element exerts restoring forces on the valve needle, which effect a centered guidance of the valve needle. The restoring forces expediently act on the valve needle, in particular in the radial direction. At the same time exerts the spring element in particular the radial restoring forces opposing forces on the valve body, in particular on its side wall. Emotional can exert the spring element in one embodiment, in addition axial restoring forces on the valve needle.

Gemäß einer Ausführungsform der Erfindung weist das zumindest eine Federelement eine Vorspannung auf, und zwar im fertig montierten Zustand der Fluid-Einspritzvorrichtung und unabhängig von der Stellung des Ventils, d.h. von der Position der Ventilnadel. Insbesondere ist das Federelement in radialer Richtung vorgespannt. Beispielsweise ist es in radialer Richtung komprimiert in dem radialen Spalt zwischen der Ventilnadel und der Seitenwand des Ventilkörpers eingespannt.According to one embodiment of the invention, the at least one spring element has a bias, in the fully assembled state of the fluid injection device and regardless of the position of the valve, i. from the position of the valve needle. In particular, the spring element is biased in the radial direction. For example, it is compressed in the radial direction in the radial gap between the valve needle and the side wall of the valve body clamped.

Das hat den Vorteil, dass eine symmetrische Rückstellkraft und eine sichere Führung der Ventilnadel erreicht werden kann. Die Vorspannung verhindert auch, dass im Laufe der Zeit ein insbesondere radiales Spiel zwischen der Feder und dem Ventilkörper bzw. der Ventilnadel entsteht, das eine sichere Führung der Ventilnadel verhindern würde.This has the advantage that a symmetrical restoring force and reliable guidance of the valve needle can be achieved. The bias also prevents over time a particular radial clearance between the spring and the valve body or the valve needle is formed, which would prevent safe guidance of the valve needle.

Gemäß der Erfindung ist das zumindest eine Federelement als runde Schraubenfeder ausgebildet und stützt sich mit seinem inneren Umfang an der Ventilnadel und mit seinem äußeren Umfang am Ventilkörper ab, oder das zumindest eine Federelement ist als Spinnenfeder ausgebildet.According to the invention, the at least one spring element is designed as a round helical spring and is supported with its inner circumference on the valve needle and with its outer circumference on the valve body, or the at least one spring element is designed as a spider spring.

Ist das zumindest eine Federelement als runde Schraubenfeder ausgebildet, weist das Federelement die äußeren Konturen eines Torus auf, der durch eine Schraubenfeder gebildet ist. Anders ausgedrückt hat die Schraubenfeder einen Torus als Einhüllende. Die Windungen der Schraubenfeder können zweckmäßig um eine gekrümmte und geschlossene Mittellinie - insbesondere um eine kreisförmige Mittellinie - herum gewickelt sein, welche insbesondere die Mittellinie des Torus ist. Die Mittellinie ist dabei zweckmäßigerweise nur eine gedachte Linie. Ein derartiges Federelement ist geeignet, eine symmetrische Rückstellkraft auf die Ventilnadel und somit eine sichere Führung zu bewirken.If the at least one spring element is designed as a round helical spring, the spring element has the outer contours of a torus, which is formed by a helical spring. In other words, the coil spring has a torus as an envelope. The turns of the helical spring may conveniently be wound around a curved and closed centerline, especially about a circular centerline, which is particularly the centerline of the torus. The center line is expediently only an imaginary line. Such a spring element is suitable to effect a symmetrical restoring force on the valve needle and thus a secure guidance.

Ist das zumindest eine Federelement als Spinnenfeder ausgebildet, weist das Federelement einen inneren Umfang auf, mit dem es sich an der Ventilnadel abstützt, sowie eine Anzahl von Federbeinen, mit denen es sich am Ventilkörper abstützt. Unter einer Spinnenfeder wird dabei insbesondere eine Feder mit einem ringförmigen Grundkörper und einer Mehrzahl von Federbeinen verstanden, die sich von dem Grundkörper radial nach außen erstrecken. Der Grundkörper hat vorzugsweise einen Durchlass, insbesondere eine zentrale Öffnung, welcher den inneren Umfang definiert, und durch welchen sich die Ventilnadel erstreckt. Die Federbeine sind vorzugsweise gebogen, so dass sie sich insbesondere von dem Grundkörper nicht nur radial nach außen erstecken sondern zugleich axial über den Grundkörper hinaus erstrecken.If the at least one spring element is designed as a spider spring, the spring element has an inner circumference, with which it is supported on the valve needle, and a number of struts, with which it is supported on the valve body. Under a spider spring is understood in particular a spring having an annular base body and a plurality of spring struts, which extend from the main body radially outward. The main body preferably has a passage, in particular a central opening, which defines the inner periphery, and through which the valve needle extends. The struts are preferably bent so that they not only extend radially outwards from the base body, but at the same time extend axially beyond the base body.

Auch ein derartiges Federelement ist geeignet, eine symmetrische Rückstellkraft und somit eine sichere Führung der Ventilnadel zu bewirken. Es ist besonders einfach montierbar.Such a spring element is also suitable for effecting a symmetrical restoring force and thus reliable guidance of the valve needle. It is very easy to install.

Gemäß einer weiteren Ausführungsform sind zumindest zwei Federelemente vorgesehen, die als Schraubenfedern ausgebildet sind und entlang des Umfanges der Ventilnadel voneinander beabstandet zwischen der Ventilnadel und dem Ventilkörper angeordnet sind, insbesondere einander gegenüberliegend.According to a further embodiment, at least two spring elements are provided, which are designed as helical springs and spaced along the circumference of the valve needle between the valve needle and the valve body are arranged, in particular opposite each other.

Bei dieser Ausführungsform kann der Grad der Symmetrie der auf die Ventilnadel wirkenden Kräfte dadurch erhöht werden, dass mehr Federelemente entlang des Umfangs der Ventilnadel angeordnet werden, zum Beispiel 3, 4, 5 oder 6 Federelemente die insbesondere in Umfangsrichtung symmetrisch verteilt sind. Auf diese Weise kann eine Führung der Ventilnadel mittels besonders einfach ausgebildeter Bauteile erzielt werden.In this embodiment, the degree of symmetry of the forces acting on the valve needle forces can be increased by the fact that more spring elements along the circumference of the valve needle are arranged, for example 3, 4, 5 or 6 spring elements which are distributed symmetrically in particular in the circumferential direction. In this way, a guide of the valve needle can be achieved by means of particularly simple components.

Sowohl durch eine Schraubenfeder als auch durch eine Spinnenfeder kann Kraftstoff problemlos hindurchtreten. Ein besonders großer hydraulischer Durchmesser ist erzielbar, so dass keine weiteren Einrichtungen für eine Kraftstoffpassage durch den Innenraum der Fluid-Einspritzvorrichtung notwendig sind.Fuel can easily pass through both a coil spring and a spider spring. A particularly large hydraulic diameter can be achieved, so that no further Means are required for a fuel passage through the interior of the fluid injection device.

Gemäß einer Ausführungsform der Erfindung sind zumindest ein erstes Federelement an einem dem Fluidauslass zugewandtenAccording to one embodiment of the invention, at least one first spring element on a side facing the fluid outlet

Abschnitt der Ventilnadel und zumindest ein zweites Federelement in einem von dem Fluidauslass entfernten Abschnitt der Ventilnadel angeordnet. Insbesondere sind das erste und das zweite Federelement entgegengesetzten axialen Enden der Ventilnadel benachbart.Section of the valve needle and arranged at least a second spring element in a remote from the fluid outlet portion of the valve needle. In particular, the first and second spring members are adjacent opposite axial ends of the valve needle.

Bei dieser Ausführungsform ist eine Führung der Ventilnadel an mindestens zwei Punkten, nämlich oben und unten an der Ventilnadel, vorgesehen. Die Führung ist somit besonders stabil. Die Gefahr eines Verkippens der Ventilnadel ist besonders gering. Beispielsweise kann eine erste runde Schraubenfeder an einem dem Fluidauslass zugewandten Abschnitt der Ventilnadel vorgesehen sein und eine zweite runde Schraubenfeder an einem von dem Fluidauslass entfernten Abschnitt der Ventilnadel. Es können jedoch auch verschiedenartige Federelemente verwendet werden, beispielsweise eine runde Schraubenfeder an einem den Fluid-auslass zugewandten Abschnitt der Ventilnadel und eine Spinnenfeder an einem von dem Fluidauslass entfernten Abschnitt der Ventilnadel.In this embodiment, a guide of the valve needle at at least two points, namely at the top and bottom of the valve needle is provided. The leadership is thus particularly stable. The risk of tilting the valve needle is particularly low. For example, a first round coil spring may be provided on a portion of the valve needle facing the fluid outlet and a second round coil spring on a portion of the valve needle remote from the fluid outlet. However, various spring elements may be used, such as a round coil spring on a portion of the valve needle facing the fluid outlet, and a spider spring on a portion of the valve needle remote from the fluid outlet.

Gemäß einer weiteren Ausführungsform der Erfindung ist zumindest ein Federelement an einem mittleren Abschnitt der Ventilnadel zwischen einem dem Fluidauslass zugewandten Abschnitt und einem von dem Fluidauslass entfernten Abschnitt der Ventilnadel angeordnet. Insbesondere ist der geometrische Schwerpunkt des Federelements gegenüber dem geometrischen Schwerpunkt der Ventilnadel um 30 % oder weniger, insbesondere um 20% oder weniger der axialen Ausdehnung der Ventilnadel in axialer Richtung versetzt angeordnet. Dieses Federelement ermöglicht eine Führung der Ventilnadel im mittleren Abschnitt, so dass eine besonders genaue axiale Führung der Ventilnadel erzielbar ist.According to a further embodiment of the invention, at least one spring element is arranged on a middle section of the valve needle between a section facing the fluid outlet and a section of the valve needle remote from the fluid outlet. In particular, the geometric center of gravity of the spring element relative to the geometric center of gravity of the valve needle by 30% or less, in particular by 20% or less of the axial extent of the valve needle is arranged offset in the axial direction. This spring element allows a guide of the valve needle in the central portion, so that a particularly accurate axial guidance of the valve needle can be achieved.

Diese Führung kann als alleinige Führung der Ventilnadel vorgesehen sein, insbesondere wenn eine Führung der Ventilnadel in einem anderen Abschnitt ohnehin durch die Geometrie der Fluid-Einspritzvorrichtung verwirklicht wird, beispielsweise am Ventilsitz. Die Führung in dem mittleren Abschnitt der Ventilnadel kann jedoch auch zusätzlich zu einer Führung an einem dem Fluidauslass zugewandten Abschnitt der Ventilnadel und an einem von dem Fluidauslass entfernten Abschnitt der Ventilnadel vorgesehen sein.This guide can be provided as a sole guide of the valve needle, in particular if a guide of the valve needle is realized in any other section anyway by the geometry of the fluid injection device, for example on Valve seat. However, the guide in the middle section of the valve needle may also be provided in addition to a guide on a portion of the valve needle facing the fluid outlet and on a portion of the valve needle remote from the fluid outlet.

Das zumindest eine Federelement kann mit einer Außenwand der Ventilnadel und/oder einer Innenwand des Ventilkörpers verschweißt oder anderweitig fest verbunden sein. Beispielsweise kann eine runde Schraubenfeder an ihrem inneren Umfang mit der Ventilnadel und/oder an ihrem äußeren Umfang mit dem Ventilkörper verschweißt sein. Eine Spinnenfeder kann an ihrem inneren Umfang mit der Ventilnadel und/oder an ihren Federbeinen mit dem Ventilkörper verschweißt sein. Das zumindest eine Federelement kann jedoch auch lediglich mit der Ventilnadel oder dem Ventilkörper verschweißt sein und an dem Ventilkörper bzw. der Ventilnadel entlang gleiten.The at least one spring element can be welded or otherwise firmly connected to an outer wall of the valve needle and / or an inner wall of the valve body. For example, a round coil spring may be welded at its inner periphery to the valve needle and / or at its outer periphery to the valve body. A spider spring may be welded at its inner periphery to the valve needle and / or to its struts with the valve body. However, the at least one spring element can also be welded only to the valve needle or the valve body and slide along the valve body or the valve needle.

Gemäß einer Ausführungsform der Erfindung ist das zumindest eine Federelement aus einem korrosionsbeständigen Federstahl ausgebildet, wobei sich die Korrosionsbeständigkeit auf den verwendeten Kraftstoff bezieht, mit dem das Federelement in Berührung steht.According to one embodiment of the invention, the at least one spring element is formed of a corrosion-resistant spring steel, wherein the corrosion resistance refers to the fuel used, with which the spring element is in contact.

Im Folgenden wird die Erfindung anhand von exemplarischen Ausführungsbeispielen und unter Bezugnahme auf die beigefügten schematischen Zeichnungen näher erläutert.

Figur 1
zeigt einen Längsschnitt durch eine Fluid-Einspritzvorrichtung gemäß einer ersten Ausführungsform der Erfindung,
Figur 2
zeigt ein Detail der Fluid-Einspritzvorrichtung gemäß Figur 1,
Figur 3
zeigt ein Detail einer Fluid-Einspritzvorrichtung gemäß einer weiteren Ausführungsform der Erfindung,
Figur 4
zeigt ein Federelement für eine Fluid-Einspritzvorrichtung gemäß einer weiteren Ausführungsform der Erfindung und
Figur 5
zeigt einen Längsschnitt durch einen Ausschnitt einer Fluid-Einspritzvorrichtung mit dem Federelement gemäß Figur 4.
In the following the invention will be explained in more detail by means of exemplary embodiments and with reference to the attached schematic drawings.
FIG. 1
shows a longitudinal section through a fluid injection device according to a first embodiment of the invention,
FIG. 2
shows a detail of the fluid injection device according to FIG. 1 .
FIG. 3
shows a detail of a fluid injection device according to another embodiment of the invention,
FIG. 4
shows a spring element for a fluid injection device according to another embodiment of the invention and
FIG. 5
shows a longitudinal section through a section of a fluid injection device with the spring element according to FIG. 4 ,

Figur 1 zeigt eine Fluid-Einspritzvorrichtung 1 gemäß einer ersten Ausführungsform der Erfindung. Die vorliegende Fluid-Einspritzvorrichtung 1 gemäß der vorliegenden Ausführungsform ist beispielsweise ein Kraftstoffinjektor, insbesondere zur Einspritzen von Kraftstoff in den Ansaugtrakt eines Verbrennungsmotors. Alternativ kann es sich auch um einen Harnstoffinjektor zur Einspritzung einer Harnstofflösung für die Abgasnachbehandlung handeln. FIG. 1 shows a fluid injection device 1 according to a first embodiment of the invention. The present fluid injection apparatus 1 according to the present embodiment is, for example, a fuel injector, in particular for injecting fuel into the intake tract of an internal combustion engine. Alternatively, it can also be a urea injector for injecting a urea solution for the exhaust aftertreatment.

Die Fluid-Einspritzvorrichtung 1 weist ein Ventil 3 mit einer Ventilnadel 5, einer als Kugel ausgebildeten Spitze 7 und einem Ventilsitz 9 auf. Im geschlossenen Zustand ist die Spitze 7 durch die Kraft einer Rückstellfeder 30 auf dem Ventilsitz 9 gedrückt und verschließt somit die Düse 11. Ein Ventilgehäuse - der Ventilkörper 13 - umgibt das Ventil 3 sowie den Düsenschaft 15, der als Hohlraum innerhalb des Ventilkörpers 13 ausgebildet ist und im Betrieb mit Kraftstoff gefüllt ist.The fluid injection device 1 has a valve 3 with a valve needle 5, a ball-shaped tip 7 and a valve seat 9. In the closed state, the tip 7 is pressed by the force of a return spring 30 on the valve seat 9 and thus closes the nozzle 11. A valve housing - the valve body 13 - surrounds the valve 3 and the nozzle shaft 15, which is formed as a cavity within the valve body 13 and is filled with fuel during operation.

Die Düse 11 bildet einen Fluidauslass der Fluid-Einspritzvorrichtung 1, d.h. vorliegend z.B. einen Kraftstoffauslass.The nozzle 11 forms a fluid outlet of the fluid injector 1, i. present e.g. a fuel outlet.

Auf der dem Fluidauslass abgewandten Seite des Düsenschafts 15 schließt sich an diesen eine Einlasskammer 19 an, die durch das Einlassrohr 18 gebildet ist und die mit dem Düsenschaft 15 in Fließverbindung steht. In der Einlasskammer 19 ist ein Filter 29 für den Kraftstoff angeordnet, über dessen Positionierung die Vorspannung der Rückstellfeder 30 einstellbar ist.On the side facing away from the fluid outlet side of the nozzle shaft 15 is followed by an inlet chamber 19, which is formed by the inlet tube 18 and which is in flow communication with the nozzle shaft 15. In the inlet chamber 19, a filter 29 is arranged for the fuel, the positioning of the bias of the return spring 30 is adjustable.

Im Betrieb sind die Einlasskammer 19 und der Düsenschaft 15 mit dem einzuspritzenden Kraftstoff gefüllt. Um ein Einspritzen des Kraftstoffs durch die Düse 11 zu ermöglichen, weist die Fluid-Einspritzvorrichtung 1 eine elektromagnetische Betätigungsvorrichtung auf.In operation, the inlet chamber 19 and the nozzle stem 15 are filled with the fuel to be injected. To inject the To allow fuel through the nozzle 11, the fluid injection device 1 to an electromagnetic actuator.

Die elektromagnetische Betätigungsvorrichtung umfasst eine Spule 21, einen Anker 23, ein Polstück 25 sowie eine nichtmagnetische Hülse 27, die auf ein Ende des Polstücks 25 aufgepresst ist. Der Anker 23 ist in Längsrichtung der Fluid-Einspritzvorrichtung 1 verschiebbar und vorliegend fest mit der Ventilnadel 5 verbunden. So nimmt er die Ventilnadel 5 mit, wenn er sich axial bewegt. Die Ventilnadel 5 gibt bei einer Verschiebung in einer Richtung weg vom Ventilsitz 9 die Düse 11 frei und ermöglicht dadurch den Austritt von Fluid - d.h. vorliegend z.B. Kraftstoff oder Harnstofflösung - durch die Düse 11.The electromagnetic actuator comprises a coil 21, an armature 23, a pole piece 25 and a non-magnetic sleeve 27 which is pressed onto one end of the pole piece 25. The armature 23 is displaceable in the longitudinal direction of the fluid injection device 1 and in the present case firmly connected to the valve needle 5. So he takes the valve needle 5 with it when it moves axially. The valve needle 5, when displaced in a direction away from the valve seat 9, releases the nozzle 11, thereby allowing the escape of fluid - i. present e.g. Fuel or urea solution - through the nozzle 11.

Die Fluid-Einspritzvorrichtung 1 weist eine Führung der Ventilnadel 5 durch ein Federelement 17 auf, das innerhalb des Düsenschafts 15 angeordnet ist. Bei der gezeigten Ausführungsform ist das Federelement 17 als runde Schraubenfeder ausgebildet, deren Windungen um eine um die Längsachse 34 kreisförmig umlaufende, geschlossene, gedachte Mittellinie gewickelt sind.The fluid injection device 1 has a guide of the valve needle 5 by a spring element 17, which is arranged within the nozzle shaft 15. In the embodiment shown, the spring element 17 is designed as a round helical spring, whose windings are wound around a closed, imaginary center line circulating around the longitudinal axis 34 in a circular manner.

Figur 2 zeigt einen Ausschnitt der Fluid-Einspritzvorrichtung 1 mit dem Federelement 17 im Detail. Dabei ist der Einfachheit halber lediglich die Hälfte der Fluid-Einspritzvorrichtung 1 oberhalb der Längsachse 34 gezeigt. FIG. 2 shows a detail of the fluid injection device 1 with the spring element 17 in detail. In this case, only half of the fluid injection device 1 above the longitudinal axis 34 is shown for the sake of simplicity.

Im entspannten Zustand ist der Gesamtdurchmesser des Federelements 17 etwas größer als der Durchmesser des Düsenschafts 15, so dass es mit einer leichten Vorspannung in den Düsenschaft 15 eingebracht werden kann. Sein Innendurchmesser kann im entspannten Zustand etwas kleiner sein als der Außendurchmesser der Ventilnadel 5, so dass es auch gegenüber der Ventilnadel 5 vorgespannt ist. Das Federelement 17 ist nach dem Einbringen in den Düsenschaft 15 in dem radialen Spalt 16 zwischen der Ventilnadel 5 und einer um die Längsachse 34 umlaufenden Seitenwand 14 des Ventilkörpers 13 angeordnet. Es stützt sich mit seinem inneren Umfang an der Ventilnadel 5 ab und mit seinem äußeren Umfang am Ventilkörper 13. So überbrückt es den radialen Spalt zwischen der Ventilnadel 5 und dem Ventilkörper 13 und übt radial einwärts gerichtete Rückstellkräfte auf die Ventilnadel 5 aus. Entsprechend übt das Federelement 17 radial auswärts gerichtete Gegenkräfte auf die Seitenwand 14 des Ventilkörpers 13 im Bereich des Düsenschafts aus. Mittels der Rückstellkräfte ist die Ventilnadel 5 im Bereich des Düsenschafts 15 auf der Längsachse 34 zentriert und durch das Federelement 17 axial geführt.In the relaxed state, the overall diameter of the spring element 17 is slightly larger than the diameter of the nozzle shaft 15, so that it can be introduced into the nozzle shaft 15 with a slight bias. Its inner diameter may be slightly smaller in the relaxed state than the outer diameter of the valve needle 5, so that it is also biased relative to the valve needle 5. The spring element 17 is after insertion into the nozzle shaft 15 in the radial gap 16 between the valve needle 5 and a circumferential about the longitudinal axis 34 Side wall 14 of the valve body 13 is arranged. It is supported with its inner circumference on the valve needle 5 and with its outer circumference on the valve body 13. Thus, it bridges the radial gap between the valve needle 5 and the valve body 13 and exerts radially inwardly directed restoring forces on the valve needle 5. Accordingly, the spring element 17 exerts radially outwardly directed opposing forces on the side wall 14 of the valve body 13 in the region of the nozzle shaft. By means of the restoring forces, the valve needle 5 is centered in the region of the nozzle shaft 15 on the longitudinal axis 34 and axially guided by the spring element 17.

Gemäß der in den Figuren 1 und 2 gezeigten ersten Ausführungsform ist lediglich eine runde Schraubenfeder als Führung der Ventilnadel 5 vorgesehen. Dieses Federelement 17 ist in einem dem Fluidauslass zugewandten Abschnitt der Ventilnadel angeordnet, nämlich im axialen End-Bereich der Ventilnadel 5 unmittelbar vor der Spitze 7.According to the in the FIGS. 1 and 2 shown first embodiment, only a round coil spring is provided as a guide of the valve needle 5. This spring element 17 is arranged in a portion of the valve needle facing the fluid outlet, namely in the axial end region of the valve needle 5 immediately in front of the tip 7.

Weitere Führungen der Ventilnadel durch Federelemente 17 sind in den Figuren 1 und 2 nicht dargestellt. Beispielsweise ist das von der Spitze 7 abgewandte Ende der Ventilnadel 5 jedoch mittels des Ankers 23 axial geführt. Dazu kann der Anker 23 in gleitendem Kontakt mit der Hülse 27 und/oder dem Ventilkörper 3 sein.Further guides of the valve needle by spring elements 17 are in the FIGS. 1 and 2 not shown. For example, the end facing away from the tip 7 of the valve needle 5 is guided axially by means of the armature 23. For this purpose, the armature 23 may be in sliding contact with the sleeve 27 and / or the valve body 3.

Figur 3 zeigt eine Prinzipskizze eines Ausschnitts einer Fluid-Einspritzvorrichtung 1 gemäß einer weiteren Ausführungsform der Erfindung, die mit der ersten Ausführungsform gemäß den Figuren 1 und 2 kombiniert werden könnte. FIG. 3 shows a schematic diagram of a section of a fluid injection device 1 according to another embodiment of the invention, with the first embodiment according to the FIGS. 1 and 2 could be combined.

Bei dieser Ausführungsform ist ein Federelement 17 an einem von dem Fluidauslass entfernten Abschnitt der Ventilnadel 5 angeordnet. Das Federelement 17 ist in dieser Ausführungsform ebenfalls als runde Schraubenfeder ausgebildet. Sie ist in den mit P gekennzeichneten Punkten mit der Ventilnadel 5 sowie mit dem Ventilkörper 13 verschweißt. Eine derartige Verschweißung des Federelements 17 kann auch bei der in den Figuren 1 und 2 gezeigten ersten Ausführungsform vorgesehen sein, ist jedoch der Übersichtlichkeit halber nicht dargestellt.In this embodiment, a spring element 17 is disposed at a portion of the valve needle 5 remote from the fluid outlet. The spring element 17 is also formed in this embodiment as a round coil spring. It is welded in the points marked with P with the valve needle 5 and with the valve body 13. Such a welding of the spring element 17 can also in the in the FIGS. 1 and 2 However, for the sake of clarity, it is not shown.

Das Federelement 17 ist unter Vorspannung in den Ventilkörper 13 eingefügt. Es übt daher durch die Pfeile 32 angedeutete radialen Kräfte auf die Ventilnadel 5 bzw. die Seitenwand 14 des Ventilkörpers 13 aus. Diese Kräfte bewirken eine axiale Führung der Ventilnadel 5 in dem Ventilkörper 13 und zentrieren die Ventilnadel 5 insbesondere auf der Längsachse 34.The spring element 17 is inserted under prestress in the valve body 13. It therefore exerts radial forces indicated by the arrows 32 on the valve needle 5 or the side wall 14 of the valve body 13. These forces cause an axial guidance of the valve needle 5 in the valve body 13 and center the valve needle 5, in particular on the longitudinal axis 34.

Figur 4 zeigt ein Federelement 17, das in einer weiteren Ausführungsform der Fluid-Einspritzvorrichtung 1 verwendet wird in Draufsicht entlang der Längsachse 34. FIG. 4 shows a spring element 17, which is used in a further embodiment of the fluid injection device 1 in plan view along the longitudinal axis 34th

Das Federelement 17 ist in dieser Ausführungsform als Spinnenfeder ausgebildet und weist einen ringförmigen Grundkörper 33 mit einem inneren Umfang 35 auf, der einen Durchlass 37 umgibt. Von dem ringförmigen Grundkörper 33 aus erstrecken sich Federbeine 36 nach außen. Zudem sind die Federbeine 36 gebogen, so dass sie sich in axialer Richtung vom Grundkörper 33 weg erstrecken und axial über diesen hinaus ragen. Vorliegende haben die Federbeine 36 einen C-förmig gebogenen Verlauf (siehe Fig. 5) .The spring element 17 is formed in this embodiment as a spider spring and has an annular base body 33 with an inner circumference 35 which surrounds a passage 37. From the annular base body 33 spring struts 36 extend outwards. In addition, the struts 36 are bent so that they extend away from the main body 33 in the axial direction and protrude axially beyond this. Present, the struts 36 have a C-shaped curve (see Fig. 5 ).

Figur 5 zeigt die Fluid-Einspritzvorrichtung 1 gemäß einer Ausführungsform der Erfindung mit dem in Figur 4 gezeigten Federelement 17. Das Federelement 17 ist derart angeordnet, dass sich die Ventilnadel 5 durch den Durchlass 37 erstreckt und der innere Umfang 35 des Federelements 17 an der Ventilnadel 5 anliegt. Entlang des inneren Umfangs 35 ist das Federelement 17 mit der Ventilnadel 5 verschweißt. FIG. 5 shows the fluid injection device 1 according to an embodiment of the invention with the in FIG. 4 The spring element 17 is arranged such that the valve needle 5 extends through the passage 37 and the inner circumference 35 of the spring element 17 rests against the valve needle 5. Along the inner circumference 35, the spring element 17 is welded to the valve needle 5.

Mit seinen Federbeinen 36 stützt sich das Federelement 17 am Ventilkörper 13 ab. Da das Federelement 17 unter Vorspannung in den Ventilkörper 13 eingebracht ist, übt es in der anhand von Figur 3 erläuterten Weise Kräfte auf den Ventilkörper 13 sowie die Ventilnadel 5 aus, die eine Führung der Ventilnadel 5 bewirken.With its struts 36, the spring element 17 is supported on the valve body 13. Since the spring element 17 is introduced under bias in the valve body 13, it exercises in the basis of FIG. 3 explained manner forces on the valve body 13 and the valve needle 5, which cause a guide of the valve needle 5.

Beispielsweise aufgrund der Elastizität der Federelemente 17 ist die Ventilnadel bei allen gezeigten Ausführungsformen entlang der Längsachse 34 soweit beweglich, wie es für das Öffnen und Schließen des Ventils erforderlich ist.For example, due to the elasticity of the spring elements 17, the valve needle is in all embodiments shown along the longitudinal axis 34 movable as far as it is necessary for the opening and closing of the valve.

Die verschiedenen gezeigten Ausführungsformen sind miteinander kombinierbar. So können beispielsweise Federelemente 17 in Form runder Schraubenfedern und in Form von Spinnenfedern oder anders gestaltete Federelemente miteinander kombiniert werden, so dass eines der Federelemente 17 an einem dem Fluidauslass zugewandten Abschnitt der Düsennadel 5 angeordnet ist und zumindest ein weiteres, anders gestaltetes Federelement 17 an einem vom Fluidauslass entfernt gelegenen Abschnitt der Düsennadel 5 angeordnet ist.The various embodiments shown can be combined with one another. For example, spring elements 17 in the form of round coil springs and in the form of spider springs or differently designed spring elements can be combined with each other so that one of the spring elements 17 is arranged on a section of the nozzle needle 5 facing the fluid outlet and at least one further, differently designed spring element 17 on one from the fluid outlet remote portion of the nozzle needle 5 is arranged.

Claims (10)

  1. Fluid injection device (1) for internal combustion engines, having a valve body (13) in which a valve needle (5) is arranged so as to be displaceable along a longitudinal axis (34) of the valve body (13) and interacts with a valve seat (9) in order to open up or close off a fluid outlet, wherein the fluid injection device (1) has at least one spring element (17) which is arranged in a radial direction between the valve body (13) and the valve needle (5) and by means of which the valve needle (5) is supported on the valve body (13), such that the valve needle (5) is guided by means of the spring element (17) in order to at least substantially prevent tilting of the valve needle (5) relative to the longitudinal axis (34) during the operation of the fluid injection device (1),
    characterized in that
    the at least one spring element (17) is formed as a circular helical spring with a closed, curved central line about which the windings of the helical spring are wound, and the valve needle (5) is supported by means of the spring element (17) on the valve body (13) by virtue of the spring element (17) being supported with its inner circumference on the valve needle (5) and with its outer circumference on the valve body (13),
    or in that
    the at least one spring element (17) is formed as a spider-type spring and has an inner circumference (35), by means of which it is supported on the valve needle (5), and a number of spring legs (36), by means of which it is supported on the valve body (13) .
  2. Fluid injection device (1) according to the preceding claim, wherein the spring element (17) is arranged in a radial direction between the valve needle (5) and a side wall (14), encircling the longitudinal axis (34), of the valve body (13) and bridges the radial gap (16) between the valve needle (5) and the side wall (14).
  3. Fluid injection device (1) according to one of the preceding claims, wherein the valve needle (5) is centered with respect to the longitudinal axis (34), and axially guided, by means of the spring element.
  4. Fluid injection device (1) according to one of the preceding claims, wherein the at least one spring element (17) is preloaded in a radial direction.
  5. Fluid injection device (1) according to Claims 2 and 4, wherein, at opposite sides of the gap (16), the spring element (17) exerts oppositely directed radial forces on the valve needle (5) and on the valve body.
  6. Fluid injection device (1) according to one of the preceding claims, which has a multiplicity of spring elements (17) as a guide of the valve needle (5), which spring elements are arranged in a radial direction between the valve body (13) and the valve needle (5) and by means of which spring elements the valve needle (5) is supported on the valve body (13), wherein at least two of the spring elements (17) are formed as helical springs and are arranged, spaced apart from one another along the circumference of the valve needle (5), between the valve needle (5) and the valve body (13).
  7. Fluid injection device (1) according to one of the preceding claims, which has a multiplicity of spring elements (17) as a guide of the valve needle (5), which spring elements are arranged in a radial direction between the valve body (13) and the valve needle (5) and by means of which spring elements the valve needle (5) is supported on the valve body (13), wherein at least a first spring element (17) is arranged on a section of the valve needle (5) facing toward the fluid outlet, and at least a second spring element (17) is arranged on a section of the valve needle (5) remote from the fluid outlet.
  8. Fluid injection device (1) according to one of the preceding claims, wherein the spring element (17) or at least one of the spring elements (17) is arranged on a central section of the valve needle (5) between a section of the valve needle (5) facing toward the fluid outlet and a section of the valve needle (5) remote from the fluid outlet.
  9. Fluid injection device (1) according to one of the preceding claims, wherein the at least one spring element (17) is welded to the valve needle (5) and/or to an inner surface of the valve body (13).
  10. Fluid injection device (1) according to one of the preceding claims, wherein the at least one spring element (17) is formed from a corrosion-resistant spring steel.
EP16781708.9A 2015-10-09 2016-10-05 Fluid-injection device for internal combustion engines Active EP3359805B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015219646.1A DE102015219646A1 (en) 2015-10-09 2015-10-09 Fluid injection device for internal combustion engines
PCT/EP2016/073764 WO2017060285A1 (en) 2015-10-09 2016-10-05 Fluid-injection device for internal combustion engines

Publications (3)

Publication Number Publication Date
EP3359805A1 EP3359805A1 (en) 2018-08-15
EP3359805B1 true EP3359805B1 (en) 2019-07-31
EP3359805B8 EP3359805B8 (en) 2019-12-18

Family

ID=57136841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16781708.9A Active EP3359805B8 (en) 2015-10-09 2016-10-05 Fluid-injection device for internal combustion engines

Country Status (6)

Country Link
US (1) US10570864B2 (en)
EP (1) EP3359805B8 (en)
KR (1) KR102082588B1 (en)
CN (1) CN108138734B (en)
DE (1) DE102015219646A1 (en)
WO (1) WO2017060285A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015219646A1 (en) 2015-10-09 2017-04-13 Continental Automotive Gmbh Fluid injection device for internal combustion engines

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139276A (en) * 1988-04-25 1992-08-18 Peter J. Balsells Canted coil spring radially loaded while in a cavity
US4906109A (en) 1988-06-20 1990-03-06 Peter J. Balsells Spring loaded guide ring
JPH0742865U (en) * 1993-12-31 1995-08-11 株式会社京浜精機製作所 Electromagnetic fuel injection valve
US5642862A (en) * 1995-07-28 1997-07-01 Siemens Automotive Corporation Fuel injection valve having a guide diaphragm and method for assembling
DE19736684A1 (en) * 1997-08-22 1999-02-25 Bosch Gmbh Robert Fuel injector for internal combustion engine
DE19927900A1 (en) * 1999-06-18 2000-12-21 Bosch Gmbh Robert Fuel injection valve for direct injection IC engine has movement of armature limited by opposing stops attached to valve needle one of which is provided by spring element
DE10024703A1 (en) 2000-05-18 2001-11-22 Bosch Gmbh Robert Injection arrangement for fuel storage injection system has valve unit blocking auxiliary channel and outlet path in alternation
US6739575B2 (en) 2002-06-06 2004-05-25 Caterpillar Inc Piezoelectric valve system
DE10259800A1 (en) * 2002-12-19 2004-07-01 Robert Bosch Gmbh Fuel injector
DE102007044877B4 (en) * 2007-09-20 2011-06-01 Compact Dynamics Gmbh Fluid injection valve
DE102008012356A1 (en) * 2008-03-03 2009-09-10 Robert Bosch Gmbh Fuel injection device for internal combustion engine, has guide sleeve with guide- and/or center region deformed by prestressing force such that desired guide tolerance is adjusted between valve element and guide- and/or center region
EP2123899B1 (en) * 2008-05-23 2011-10-26 Delphi Technologies, Inc. Fuel injector with a solenoid actuator
CN103261664B (en) * 2010-12-20 2015-08-26 丰田自动车株式会社 Fuelinjection nozzle
DE102011076665A1 (en) * 2011-05-30 2012-12-06 Robert Bosch Gmbh Nozzle assembly for a fuel injector and fuel injector
EP2568157A1 (en) * 2011-09-08 2013-03-13 Delphi Technologies Holding S.à.r.l. Injection Nozzle
DE102015219646A1 (en) 2015-10-09 2017-04-13 Continental Automotive Gmbh Fluid injection device for internal combustion engines

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
CN108138734B (en) 2020-10-02
CN108138734A (en) 2018-06-08
EP3359805B8 (en) 2019-12-18
US20180306152A1 (en) 2018-10-25
DE102015219646A1 (en) 2017-04-13
US10570864B2 (en) 2020-02-25
EP3359805A1 (en) 2018-08-15
WO2017060285A1 (en) 2017-04-13
KR20180063889A (en) 2018-06-12
KR102082588B1 (en) 2020-02-27

Similar Documents

Publication Publication Date Title
EP3535486B1 (en) Fuel injection valve for injecting a gaseous and / or liquid fuel
DE102005061410A1 (en) Electromagnetically operated valve comprises axle together with core and plastic coil body in which coil is wound
DE19949814A1 (en) Pressure regulating valve for a storage fuel injection system for internal combustion engines
EP3374625B1 (en) Electromagnetically actuatable intake valve for a high-pressure pump, and high-pressure pump
EP3359805B1 (en) Fluid-injection device for internal combustion engines
DE102014217441A1 (en) Electromagnetically actuated proportional valve
EP1366283B1 (en) Fuel injection valve comprising an adjusting bush
EP3380715B1 (en) Fuel injector
WO2011042296A1 (en) Fuel injection valve and production thereof
DE102009002484A1 (en) Injection valve for an exhaust aftertreatment device
EP2643619B1 (en) Valve device having a movement element which is cylindrical at least in sections
EP3387247B1 (en) Electromagnetically actuatable inlet valve and high-pressure pump having an inlet valve
DE102007050819A1 (en) Electromagnetically actuated valve
EP2957760B1 (en) Nozzle assembly for a fuel injector and fuel injector
DE10142974B4 (en) Fuel injector
EP1105641B1 (en) Fuel injection valve
EP2986839B1 (en) Solenoid valve having improved opening and closing behaviour
DE102011082666A1 (en) Fuel injector, particularly for common-rail-injection system, has nozzle needle, which closes nozzle hole assembly in nozzle body in closed position, where nozzle needle is arranged in high-pressure chamber in nozzle body
DE102008005535A1 (en) Injector, particularly common rail injector, for injecting fuel into combustion chamber of internal combustion engine, has injection valve element which is adjustable between closing position and opening position
EP3303817B1 (en) Common-rail-injector
EP2955366B1 (en) Nozzle assembly for a fuel injector and fuel injector
DE102014212343A1 (en) fuel injector
DE102011077464A1 (en) Fuel injector for an internal combustion engine
EP2627891A2 (en) Fuel injection device
DE102011089354A1 (en) Fuel injection valve for internal combustion engines

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20180509

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
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: 20190226

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: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502016005834

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1161166

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190815

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: CH

Ref legal event code: PK

Free format text: BERICHTIGUNG B8

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20190731

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: CPT GROUP GMBH

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: VITESCO TECHNOLOGIES GMBH

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: 20190731

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: 20190731

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: 20190731

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: 20191031

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: 20190731

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: 20191202

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: 20190731

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: 20191031

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

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: 20191130

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: 20191101

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: 20190731

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: 20190731

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: 20190731

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: 20190731

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: 20190731

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: 20190731

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: 20190731

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: 20190731

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: 20190731

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

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: 20190731

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: 20190731

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: 20190731

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: 20200224

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: 20190731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502016005834

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE

Ref country code: DE

Ref legal event code: R097

Ref document number: 502016005834

Country of ref document: DE

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

PG2D Information on lapse in contracting state deleted

Ref country code: IS

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: 20191031

Ref country code: LU

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

Effective date: 20191005

Ref country code: LI

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

Effective date: 20191031

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: 20191030

26N No opposition filed

Effective date: 20200603

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20191031

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: 20191031

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: 20190731

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: 20191005

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: 20190731

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: 20161005

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: 20190731

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502016005834

Country of ref document: DE

Owner name: VITESCO TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: VITESCO TECHNOLOGIES GMBH, 30165 HANNOVER, DE

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: 20190731

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1161166

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211005

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: 20211005

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20230427 AND 20230503

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

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

Ref country code: GB

Payment date: 20231020

Year of fee payment: 8

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

Ref country code: IT

Payment date: 20231026

Year of fee payment: 8

Ref country code: FR

Payment date: 20231026

Year of fee payment: 8

Ref country code: DE

Payment date: 20231031

Year of fee payment: 8