EP2218901B1 - Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen - Google Patents

Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen Download PDF

Info

Publication number
EP2218901B1
EP2218901B1 EP09425057A EP09425057A EP2218901B1 EP 2218901 B1 EP2218901 B1 EP 2218901B1 EP 09425057 A EP09425057 A EP 09425057A EP 09425057 A EP09425057 A EP 09425057A EP 2218901 B1 EP2218901 B1 EP 2218901B1
Authority
EP
European Patent Office
Prior art keywords
bushing
anchor
manufacturing
flange
open
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
EP09425057A
Other languages
English (en)
French (fr)
Other versions
EP2218901A1 (de
Inventor
Mario Ricco
Sergio Stucchi
Raffaele Ricco
Onofrio De Michele
Marcello Gargano
Carlo Mazzarella
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.)
Centro Ricerche Fiat SCpA
Original Assignee
Centro Ricerche Fiat SCpA
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 Centro Ricerche Fiat SCpA filed Critical Centro Ricerche Fiat SCpA
Priority to EP09425057A priority Critical patent/EP2218901B1/de
Priority to AT09425057T priority patent/ATE514857T1/de
Publication of EP2218901A1 publication Critical patent/EP2218901A1/de
Application granted granted Critical
Publication of EP2218901B1 publication Critical patent/EP2218901B1/de
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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • 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
    • 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
    • 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
    • F02M63/0075—Stop members in valves, e.g. plates or disks limiting the movement of armature, valve or spring
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8084—Fuel injection apparatus manufacture, repair or assembly involving welding or soldering
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8092—Fuel injection apparatus manufacture, repair or assembly adjusting or calibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/066—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other

Definitions

  • the present invention relates to a method for manufacturing an open/close element for servo valves of a fuel injector, in which the open/close element comprises a bushing designed to move for a certain axial travel along a fixed stem for opening and closing said servo valve.
  • the invention moreover relates to an open/close element manufactured applying the aforesaid method.
  • the discharge duct of the servo valve gives out onto a lateral surface of the stem in such a way that, in the closing position, the bushing is subject to a substantially zero axial pressure. Consequently, the servo valve is of a balanced type and requires relatively small forces for its displacement.
  • the bushing is brought into the closing position by a corresponding spring and is controlled, against the action of the spring, for opening the servo valve by an anchor, generally a disk-shaped anchor, actuated by an electric actuator.
  • the aim of the invention is to provide a method for manufacturing an open/close element for servo valves of the type described above that will solve the problems referred to above and presents a high reliability and a limited cost.
  • the above purpose is achieved by a method for manufacturing an open/close element for servo valves of a fuel injector, as defined in Claim 1.
  • a hollow body or casing of a fuel injector for an internal-combustion engine in particular a diesel engine.
  • the casing 2 extends along a longitudinal axis and terminates with a nozzle or nebulizer (not visible in the figure) for injection of the fuel at a high pressure.
  • the casing 2 has an axial cavity 34, housed in which is a dosage servo valve 5 comprising a valve body 7 having an axial hole axially slidable in which is a rod for control of the injection (not visible in Figure 1 either).
  • This rod is controlled by the pressure of the fuel in a control chamber, which is contained in the valve body 7 and is not visible in Figure 1 either.
  • Housed in a portion of the cavity 34 is an electric actuator 15, comprising an electromagnet 16, designed to control an anchor 17 in the form of a notched disk.
  • the electromagnet 16 comprises a magnetic core 19, which has a polar surface 20 perpendicular to the axis 3 of the casing 2 and is held in position by a support or jacket 21.
  • the electric actuator 15 has an axial cavity 22 in communication with the discharge of the servo valve 5 towards the usual fuel tank.
  • a helical compression spring 23 housed in the cavity 22 is a helical compression spring 23, pre-loaded so as to exert an action of thrust on the anchor 17 in a direction opposite to the attraction exerted by the electromagnet 16.
  • the spring 23 acts on the anchor 17 through an intermediate body, designated as a whole by 12a, which comprises a flange 24 made in a single piece with a pin 12 for guiding one end of the spring 23.
  • a thin lamina 13 made of non-magnetic material is located between a plane top surface 17a of the anchor 17 and the polar surface 20 of the core 19, in order to guarantee a certain gap between the anchor 17 and the core 19.
  • the valve body 7 comprises a flange 33, housed in the cavity 34, which is kept fixed, in a fluid-tight way, against a shoulder not visible in the figure by a threaded ring nut 36 screwed on an internal thread 37 of the cavity 34.
  • the anchor 17 is associated to a bushing 41, guided axially by an axial stem 38, which is made in a single piece with the flange 33 of the valve body 7 and extends in cantilever fashion from the flange 33 itself towards the cavity 22.
  • the stem 38 has a cylindrical lateral surface 39, which guides axial sliding of the bushing 41.
  • the bushing 41 has a cylindrical internal surface 40, coupled to the lateral surface 39 of the stem 38 substantially in a fluid-tight way, for example with a diametral play of less than 4 ⁇ m, or else by means of interposition of annular seal elements.
  • the control chamber of the body 7 has an outlet duct 43 for the fuel, made axially inside the flange 33 and the stem 38.
  • the duct 43 is in communication with at least one substantially radial stretch of duct 44.
  • two or more radial stretches 44 can be provided, set at constant angular distances apart, which give out into an annular chamber 46, formed by a groove of the lateral surface 39 of the stem 38.
  • two stretches 44 are provided, inclined in the direction of the anchor 17.
  • the annular chamber 46 is obtained in an axial position adjacent to the flange 33 and is opened/closed by a terminal portion of the bushing 41, which forms the open/close element 47 for said annular chamber 46 and hence also for the radial stretches of duct 44.
  • the open/close element 47 is consequently made in a single piece with the bushing 41 and co-operates with a corresponding stop for closing the servo valve 5.
  • the open/close element 47 terminates with a stretch having an internal frustum conical surface 45 flared downwards and designed to stop against a frustum conical joint 49 between the flange 33 and the stem 38.
  • the joint 49 has two frustum conical surface portions 49a and 49b, separated by an annular groove 50, which has a cross section shaped substantially like a right angle.
  • the frustum conical surface 45 of the open/close element 47 engages in a fluid-tight way the frustum conical surface portion 49a, against which it stops in the closing position.
  • the closing position of the open/close element 47 requires a greater travel of the bushing 41 towards the joint 49, once again defining as maximum diameter of the surface the diameter of the cylindrical stretch of the annular groove 50.
  • the anchor 17 is made of a magnetic material and is formed by a distinct piece, i.e., a piece separate from the bushing 41. It has a central portion 56 having a plane bottom surface 57, and a notched annular portion 58, with cross section tapered outwards.
  • the central portion 56 has an axial hole 59, by means of which the anchor 17 engages with a certain radial play along an axial portion of the bushing 41 formed by a collar 61, obtained on a flange 60 of the bushing 41.
  • the collar 61 has a smaller diameter than the bushing 41 and hence also than the flange 60.
  • the flange 24 of the intermediate body 12a has a plane surface 65, designed to engage a surface 17a of the anchor 17 opposite to the surface 57.
  • the bushing 41 is made in a single piece with a first stop element of the anchor 17, defined by a shoulder 62, formed between the collar 61 and the flange 60 of the bushing 41.
  • the intermediate body 12a comprises an axial pin 63 for connection of the bushing 41, which is made in a single piece with the flange 24 and must be fixed rigidly to the bushing 41 so that the surface 65 of the flange 24 of the intermediate body 12a is fixed with respect to the bushing 41.
  • connection pin 63 is designed to be housed in a corresponding seat 40a of the bushing 41, which has a diameter slightly greater than the internal surface 40 of the bushing 41 in order to reduce the portion to be ground so as to ensure fluid tightness with the surface 39 of the stem 38.
  • the intermediate body 12a is provided with an axial hole 64.
  • connection pin 63 extends axially from the plane surface 65 of the flange 24 in a direction opposite to the guide pin 12.
  • the shoulder 62 is located in a position such as to create an axial play of a pre-set amount for the anchor 17 to enable a relative axial displacement between the anchor 17 and the bushing 41.
  • the distance or space between the surface 65 of the flange 24 and the shoulder 62 of the bushing 41 defines the housing of the anchor 17.
  • the plane surface 65 of the flange 24 bears upon an end surface or edge 66 of the collar 61 of the bushing 41 so that the housing of the anchor 17 is uniquely defined.
  • the anchor 17 rests against the shoulder 62 in the position indicated in Figure 1 .
  • the surface 65 of the flange 24 projects from the lamina 13 downwards by a distance equal to a certain travel, or lift, of the open/close element 47.
  • the bushing 41 can be drawn axially by the anchor 17 upwards when it engages the flange 24.
  • the anchor 17 can, however, perform a travel greater than the travel of the bushing 41, performing along the collar 61 an overtravel equal to the aforesaid play, between the two stop elements represented by the shoulder 62 of the bushing 41 and by the surface 65 of the flange 24.
  • the spring 23 acts on the body 12a and held the open/close element 47 with its frustum conical surface 45 against the frustum conical portion 49a of the joint 49 so that the servo valve 5 is closed.
  • the anchor 17 is detached from the lamina 13 and rests against the shoulder 62.
  • the annular chamber 46 there is hence set up a pressure of the fuel, the value of which is equal to the supply pressure of the injector.
  • the electromagnet 16 is energized to perform an opening stroke of the servo valve 5
  • the core 19 attracts the anchor 17, which at the start performs a loadless travel until it is brought into contact with the surface 65 of the flange 24, without affecting the displacement of the bushing 41.
  • the action of the electromagnet 16 on the anchor 17 overcomes the force of the spring 23 and, via the flange 24 and the fixing pin 63, draws the bushing 41 towards the core 19 so that the open/close element 47 opens the servo valve 5.
  • the flange 24, with the surface 65 draws the anchor 17 along with it, which hence moves together with the bushing 41.
  • the open/close element 47 strikes, with its conical surface 45, against the frustum conical surface portion 49a of the joint 49 of the valve body 7.
  • the open/close element 47 rebounds, overcoming the action of the spring 23. Instead, the anchor 17 continues its travel towards the valve body 7, recovering the play that is formed between the plane surface 57 of the portion 56 of the anchor 17 and the shoulder 62 of the flange 60. After a certain time from the first impact of the open/close element 47, the anchor 17 continues its travel towards the valve body 7 until there is an impact of the plane surface 57 of the portion 56 against the shoulder 62 of the bushing 41. As a result of this impact, the rebounds of the bushing 41 are markedly reduced or even eliminated.
  • the intermediate body 12a is fixed on the bushing 41 by welding the flange 24 on the edge 66 of the bushing 41 with a purposely provided autogenous welding device 70, schematically indicated with dashed lines in Figure 1 .
  • the flange 24 is provided with at least one substantially radial notch 71 or with a plurality of radial notches 71, angularly set at the same distance apart from one another.
  • two diametrally opposite notches 71 are provided.
  • Each notch 71 has two parallel walls 72 connected by a wall 73 perpendicular to the walls 72.
  • the two parallel walls 72 are set at a distance so as to enable access of the welding device 70 on the edge 66 of the bushing 41, along the edge of the surfaces 72 and 73 of the notch 71.
  • the distance between the walls 72 can be chosen substantially equal to the thickness of the flange 24, for example in the region of 3 mm.
  • the phasing of the intermediate body 12a can be performed automatically in any known way.
  • the anchor 17 is provided with the central guide hole 59, and the bushing 41 is provided with a guide portion 61 and the shoulder 62.
  • the intermediate body 12a is provided with the flange 24 for supporting the spring 23 and with the radial notches 71.
  • the intermediate body 12a can also be provided with the two pins 12 and 63, respectively, for guiding the end of the spring 23 and for insertion in the bushing 41.
  • the anchor 17 is inserted on the collar 61 of the bushing 41, and the fixing pin 63 is inserted into the hole 40a of the bushing so as to bring the flange 24 into contact with the edge 66 of the bushing 41.
  • the radial play between the fixing pin 63 with respect to the hole 40a can be in the region of 0.1 mm.
  • the flange 24 is welded on said edge 66, in a position corresponding to the notches 71, i.e., along the edge of the walls 72 and 73 of each notch 71 in contact with the edge 66.
  • the anchor 17 has a constant thickness for the two portions 56 and 58, whilst the shoulder 62 is not made on a flange, but on the thickness of the bushing 41.
  • a ring of calibrated thickness 55 Inserted between the bottom surface 57 of the anchor 17 and the shoulder 62 of the bushing 41 is a ring of calibrated thickness 55, which can be chosen from a series of modular classes of calibrated thicknesses in order to adjust the additional travel of the anchor 17, i.e., the relative play between the two stop elements.
  • the pin 63 of the intermediate body 12a and the anchor 17 is fitted on the bushing 41, it is necessary to fit the ring of chosen calibrated thickness 55 on the collar 61.
  • the bushing 41 has an annular flange 74 projecting outwards, which forms an stop element for the anchor 17 made in a single piece with the bushing 41.
  • a bottom surface 75 of the flange 74 (see also Figure 6 ) is designed to engage a shoulder 76 formed by an annular depression 77 of the plane top surface 17a of the anchor 17.
  • the central portion 56 of the anchor 17 can here slide on an axial portion 82 of the bushing 41, adjacent to the flange 74.
  • the flange 74 has a top surface that forms the end edge 80 of the bushing 41 and is in contact with the surface 65 of the flange 24.
  • the annular depression 77 has a depth greater than the thickness of the edge 74 to enable the whole travel of the anchor 17 towards the core 19 of the electromagnet 16.
  • the shoulder 76 of the anchor 17 is normally held in contact with the plane surface 75 of the flange 74 by a compression spring 52, located between the plane surface of the portion 56 of the anchor 17 and a depression 51 in the top surface of the flange 33 of the valve body 7.
  • the spring 52 is pre-loaded so as to exert a force far smaller than that of the spring 23, but sufficient to keep the anchor 17 with the shoulder 76 in contact with the bottom surface 75 of the flange 74 of the bushing 41.
  • the other stop element of the travel of the anchor 17 is fixed with respect to the bushing 41 and is designed to stop the anchor 17 in the travel towards the closing position of the servo valve 5.
  • Said stop element is represented herein by a C-shaped ring 78, housed in an annular groove 79 of the bushing 41 itself and is designed to block the anchor 17 on the bushing 41.
  • a ring 81 which has a calibrated thickness and can be chosen from a series of classes of modular thickness for adjusting the additional travel of the anchor 17 with respect to the bushing 41.
  • a bottom surface of the ring 81 is kept in contact with the top surface of the C-shaped ring 78.
  • the play between the anchor 17 and the bushing 41 is formed here by the difference of the distance between the surface 75 of the flange 74 and a top surface 85 of the ring 81, with the thickness of the anchor 17 itself.
  • the intermediate body 12a is connected to the bushing 41 by means of welding, performed by means of the welding device that acts in a position corresponding to radial notches 71 of the flange 24 on the surface of the flange 44 of the coil 41, as in the case of the two variants of Figures 1-4 .
  • the method for manufacturing the open/close element of Figures 5 and 6 differs from that of Figures 1-4 in that the anchor 17 must be mounted on the bushing 41 after welding of the flange 24 on the edge 80. In fact, the bushing 41 thus welded can be slid into the hole 59 of the anchor 17 and into the hole of the ring 81, which is subsequently blocked on the bushing 41 by means of the C-shaped ring 78. In this way, there does not exist the minimum risk of thermal alteration of the anchor 17 during the process of welding.
  • the method for manufacturing the open/close element 47 of the servo valves 5 according to the invention is characterized by the following steps:
  • the advantages of the manufacturing method according to the invention emerge clearly as compared to the known art.
  • the welding operation can be performed in view.
  • the weld does not cause any variation of the external profile of the bushing 41 and of the flange 24, and above all does not cause any variation of the surface 17a of the anchor 17 so that the entire travel of the anchor 17 itself is not precluded.
  • the shoulder 62 can be represented by a C-shaped ring mounted removably on the bushing, or one or both of the rings 78 and 81 mounted removably on the bushing 41.
  • a ring can be provided of a thickness chosen from classes of modular thickness for adjusting the travel of the anchor 17.
  • These modular shims can be of a C-shaped type that can be fitted on the collar 61 after insertion of the anchor 17.
  • the ring 55 can be replaced with a ring of a C-shaped type.
  • a step for the positioning of the C-shaped ring after the process of welding is necessary.
  • the advantage of said solution is not only that of enabling adjustment of the size of the housing for the anchor 17 after welding, but also that of performing the welding operation with the anchor 17 at a sufficient distance from the notch 71, there thus being reduced the risk of thermal alteration of the anchor 17 itself.
  • the shim ring 81 can be of a C-shaped type, which can be inserted after welding. In both of the variants of Figures 4 and 6 , said insertion can be performed in the assembly step, after measurement of the effective value of the housing of the anchor 17.
  • the shim rings 55 and 81 can be eliminated.

Landscapes

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

Claims (18)

  1. Verfahren zur Herstellung eines Öffnungs-/Schließelements für ein Servoventil (5) einer Kraftstoffeinspritzvorrichtung, wobei das Öffnungs-/Schließelement (47) einstückig mit einer Hülse (41) hergestellt ist, die dazu konstruiert ist, sich um eine bestimmte axiale Strecke entlang eines feststehenden Schafts (38) zu bewegen, um das Servoventil (5) zu öffnen/schließen; wobei ein Ableitungskanal (43, 44) des Servoventils (5) zu einer Seitenfläche (39) des Schafts (38) hinausführt, wobei eine Feder (23) dazu ausgelegt ist, die Hülse (41) in der Schließposition zu halten, in der die Hülse (41) einem im Wesentlichen Null betragenden axialen Druck ausgesetzt ist; wobei die Hülse (41) unter der Steuerung eines Ankers (17) beweglich ist, der von einem elektrischen Stellglied (15) entgegen der Wirkung der Feder (23) betätigt wird; wobei der Anker (17) mit einer zentralen Bohrung (59) versehen und axial um eine Strecke beweglich ist, die größer ist als die bestimmte Strecke;
    wobei das Verfahren die folgenden Schritte umfasst:
    - die Hülse (41) wird mit einem Führungsabschnitt (61, 82) versehen, der dazu ausgelegt ist, die zentrale Bohrung (59) in Eingriff zu nehmen, und zwar für eine relative Verschiebung des Ankers (17) zwischen zwei Anschlagelementen (62, 65; 75, 78), wobei die Hülse (41) mit mindestens einem (62, 75) der Anschlagelemente (62, 65; 75, 78) ausgestattet ist;
    - ein Zwischenkörper (12a) wird bereitgestellt, der einen Flansch (24) zur Halterung der Feder (23) umfasst;
    - am Flansch (24) wird mindestens eine radiale Ausklinkung (71) vorgesehen;
    - der Zwischenkörper (12a) wird an der Hülse (41) angeordnet, um den Flansch (24) in Kontakt mit einem Rand (66, 80) der Hülse (41) zu bringen; und
    - der Flansch (24) wird an dem Rand (66, 80) an einer Stelle angeschweißt, die der mindestens einen Ausklinkung (71) entspricht, so dass eine Schweißverbindung im Sichtbereich zwischen der Hülse (41) und dem Zwischenkörper (12a) hergestellt wird.
  2. Herstellungsverfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Zwischenkörper (12a) darüber hinaus mit einem Verbindungsstift (63), der in die Hülse (41) eingesteckt werden kann, und einem Führungsstift (12) zum Führen eines Endes der Feder (23) versehen ist, wobei der Führungsstift (12) koaxial zum Verbindungsstift (63) und diesem entgegengesetzt ist.
  3. Herstellungsverfahren nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass der Flansch (24) mit einer Reihe von Ausklinkungen (71) versehen ist, die in denselben Winkelabständen voneinander angeordnet sind.
  4. Herstellungsverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ausklinkung (71) zwei parallele Seiten (72) hat, die durch eine querverlaufende Seite (73) verbunden sind, wobei die parallelen Seiten in einem Abstand angesetzt sind, um ein Anschweißen eines Rands der Seiten (72, 73) am Rand (66, 80) mittels einer Autogenschweißvorrichtung (70) zu ermöglichen.
  5. Herstellungsverfahren nach Anspruch 4, dadurch gekennzeichnet, dass die parallelen Seiten (72) in einem Abstand von mindestens 2 mm voneinander entfernt angesetzt sind.
  6. Herstellungsverfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eines der Anschlagelemente (62, 74) einstückig mit der Hülse (41) hergestellt ist.
  7. Herstellungsverfahren nach Anspruch 6, dadurch gekennzeichnet, dass das integrale Anschlagelement durch eine Schulter (62) der Hülse (41) definiert ist, wobei der Anker (17) vor dem Schweißen am Führungsabschnitt (61) angebracht wird.
  8. Herstellungsverfahren nach Anspruch 7, dadurch gekennzeichnet, dass der Führungsabschnitt durch einen Bund (61) der Hülse (41) gebildet ist, der zwischen der Schulter (62) und dem Rand (66) der Hülse (41) angeordnet ist, wobei das andere der Anschlagelemente durch den Flansch (24) gebildet ist.
  9. Herstellungsverfahren nach Anspruch 8, dadurch gekennzeichnet, dass ein Ring (55) mit einer aus Klassen modularer Dicken ausgewählten Dicke zwischen der Schulter (62) und dem Anker (17) angeordnet ist.
  10. Herstellungsverfahren nach Anspruch 8, dadurch gekennzeichnet, dass ein abnehmbarer Ring (78) mit einer aus Klassen modularer Dicken ausgewählten Dicke zwischen der Schulter (62) und dem Anker (17) angeordnet ist, wobei der Ring von einer C-förmigen Art ist.
  11. Herstellungsverfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das einstückige Anschlagelement durch einen Flansch (74) der Hülse (41) gebildet ist, auf dem der Rand (80) aufliegt.
  12. Herstellungsverfahren nach Anspruch 11, dadurch gekennzeichnet, dass das andere der Anschlagelemente einen abnehmbaren Ring (78) umfasst, der dazu ausgelegt ist, den Anker (17) an der Hülse (41) zu arretieren, wobei der Anker (17) nach dem Schweißen am Führungsabschnitt (82) angebracht wird.
  13. Herstellungsverfahren nach Anspruch 12, dadurch gekennzeichnet, dass der Führungsabschnitt (82) zwischen dem Flansch (74) der Hülse (41) und dem abnehmbaren Ring (78) angeordnet ist.
  14. Herstellungsverfahren nach Anspruch 12 oder Anspruch 13, dadurch gekennzeichnet, dass es sich bei dem abnehmbaren Ring um einen C-förmigen Ring (78) handelt, der in einer Ringnut (79) der Hülse (41) angeordnet ist.
  15. Herstellungsverfahren nach Anspruch 14, dadurch gekennzeichnet, dass der C-förmige Ring (78) dazu ausgelegt ist, eine aus Klassen modularer Dicke ausgewählte ringförmige Beilagscheibe (81) zu haltern, wobei die ringförmige Beilagscheibe (81) vor dem C-förmigen Ring (78) an der Hülse (41) angebracht wird.
  16. Herstellungsverfahren nach Anspruch 14 oder Anspruch 15, dadurch gekennzeichnet, dass der C-förmige Ring (78) nach dem Einstecken des Ankers (17) in die Nut (79) eingesteckt wird.
  17. Herstellungsverfahren nach Anspruch 9 oder 15, dadurch gekennzeichnet, dass der C-förmige Ring (55, 81) nach dem Einstecken des Ankers (17) eingesteckt wird.
  18. Öffnungs-/Schließelement für ein Servoventil einer Kraftstoffeinspritzvorrichtung, das unter Anwendung des Verfahrens nach einem der vorhergehenden Ansprüche hergestellt ist.
EP09425057A 2009-02-16 2009-02-16 Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen Active EP2218901B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09425057A EP2218901B1 (de) 2009-02-16 2009-02-16 Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen
AT09425057T ATE514857T1 (de) 2009-02-16 2009-02-16 Verfahren zur herstellung eines öffnen/shliessen- elements für servoventile in kraftstoffineinspritzdüsen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09425057A EP2218901B1 (de) 2009-02-16 2009-02-16 Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen

Publications (2)

Publication Number Publication Date
EP2218901A1 EP2218901A1 (de) 2010-08-18
EP2218901B1 true EP2218901B1 (de) 2011-06-29

Family

ID=40810675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09425057A Active EP2218901B1 (de) 2009-02-16 2009-02-16 Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen

Country Status (2)

Country Link
EP (1) EP2218901B1 (de)
AT (1) ATE514857T1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9359985B2 (en) 2014-09-04 2016-06-07 Caterpillar Inc. Fluid injector actuator with resilient armature overtravel feature

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5299776A (en) * 1993-03-26 1994-04-05 Siemens Automotive L.P. Impact dampened armature and needle valve assembly
DE10133450A1 (de) * 2001-07-10 2003-01-30 Bosch Gmbh Robert Magnetventil mit Steck-Drehverbindung
DE602005021310D1 (de) * 2005-03-14 2010-07-01 Fiat Ricerche Verstellbares Dosierservoventil eines Einspritzventils sowie dessen Verstellungsverfahren
DE102006021741A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
EP2025921B1 (de) * 2007-07-30 2009-10-14 C.R.F. Società Consortile per Azioni Einspritzdüse mit ausgeglichenem Messservoventil für einen Verbrennungsmotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9359985B2 (en) 2014-09-04 2016-06-07 Caterpillar Inc. Fluid injector actuator with resilient armature overtravel feature

Also Published As

Publication number Publication date
EP2218901A1 (de) 2010-08-18
ATE514857T1 (de) 2011-07-15

Similar Documents

Publication Publication Date Title
EP1707798B1 (de) Verstellbares Dosierservoventil eines Einspritzventils sowie dessen Verstellungsverfahren
EP2318686B1 (de) Kraftstoffeinspritzservoventil
US7784711B2 (en) Metering servovalve and fuel injector for an internal combustion engine
US7740187B2 (en) Internal combustion engine fuel injector
KR100957199B1 (ko) 내연기관용, 평형 미터링 서보 밸브를 가진 연료 분사기
US6126094A (en) Internal combustion engine fuel injector
US7513445B2 (en) Metering solenoid valve for a fuel injector
US6793158B2 (en) Internal combustion engine fuel injector
EP1845256B1 (de) Kraftstoffinjektor für Verbrennungsmotoren mit einstellbarem Dosierservoventil
EP1284358B1 (de) Verbrennungsmotorskraftstoffeinspritzventil und Verfahren zu dessen Herstellung
EP2218902B1 (de) Verfahren zur Herstellung eines Öffnen/Schliessen-Elements für ausgeglichene Servoventile von Kraftstoffeinspritzdüsen
EP2218901B1 (de) Verfahren zur Herstellung eines Öffnen/Shliessen-Elements für Servoventile in Kraftstoffineinspritzdüsen
EP2218904B1 (de) Verfahren zur Herstellung eines Kraftstoffeinspritzservoventils
EP2218903B1 (de) Verfahren zur Herstellung eines Kraftstoffeinspritzservoventils
EP3230580B1 (de) Regelventilanordnung
EP2221470B1 (de) Verfahren zur Herstellung eines Kraftstoffeinspritzservoventils
JP7013181B2 (ja) 燃料噴射装置
US20090179089A1 (en) Variable shim for setting stroke on fuel injectors

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: 20090914

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): 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 SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

AKX Designation fees paid

Designated state(s): 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 SE SI SK TR

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): 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 SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602009001684

Country of ref document: DE

Effective date: 20110908

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20110629

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

Ref country code: HR

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

Effective date: 20110629

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: 20110629

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: 20110629

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: 20110929

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

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: 20110629

Ref country code: AT

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: 20110629

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: 20110629

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: 20110930

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: 20110629

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110629

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: 20110629

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: 20110629

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: 20111031

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: 20111029

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: 20110629

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: 20110629

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: 20110629

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: 20110629

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

26N No opposition filed

Effective date: 20120330

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

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: 20110629

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602009001684

Country of ref document: DE

Effective date: 20120330

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 NON-PAYMENT OF DUE FEES

Effective date: 20120229

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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: 20120216

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: 20110629

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

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: 20111010

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

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: 20110929

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: 20110629

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20130216

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: 20130228

Ref country code: LI

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

Effective date: 20130228

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: 20130216

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: 20110629

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

Ref country code: LU

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

Effective date: 20120216

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

Effective date: 20090216

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

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

Ref country code: FR

Payment date: 20170224

Year of fee payment: 9

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

Ref country code: IT

Payment date: 20170202

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: 20170428

Year of fee payment: 9

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602009001684

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20181031

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

Ref country code: DE

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

Effective date: 20180901

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: 20180228

Ref country code: IT

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

Effective date: 20180216