EP1012473B1 - Disque de turbulence et soupape d'injection de carburant equipee de ce dernier - Google Patents

Disque de turbulence et soupape d'injection de carburant equipee de ce dernier Download PDF

Info

Publication number
EP1012473B1
EP1012473B1 EP99924737A EP99924737A EP1012473B1 EP 1012473 B1 EP1012473 B1 EP 1012473B1 EP 99924737 A EP99924737 A EP 99924737A EP 99924737 A EP99924737 A EP 99924737A EP 1012473 B1 EP1012473 B1 EP 1012473B1
Authority
EP
European Patent Office
Prior art keywords
swirl
fuel injection
disc
injection valve
layer
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.)
Expired - Lifetime
Application number
EP99924737A
Other languages
German (de)
English (en)
Other versions
EP1012473A1 (fr
Inventor
Petra Heinbuch
Frank Schatz
Armin Glock
Ralf Trutschel
Gottfried Flik
Guenter Dantes
Detlef Nowak
Joerg Heyse
Thomas Schittny
Juergen Hackenberg
Ronald Glas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1012473A1 publication Critical patent/EP1012473A1/fr
Application granted granted Critical
Publication of EP1012473B1 publication Critical patent/EP1012473B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1853—Orifice plates
    • 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
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • 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
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices

Definitions

  • the invention relates to a swirl disk according to the preamble of claim 1 and a fuel injector with a swirl disk according to the preamble of claim 23.
  • a fuel injector is already known from WO 96/11335, at the downstream end of which a multi-disc atomizing attachment with a swirl preparation is arranged.
  • This atomizing attachment is also provided on the valve seat support downstream of a disk-shaped guide element installed in a valve seat carrier and a valve seat, an additional support element holding the atomizing attachment in a defined position.
  • the atomizing attachment is designed with two or four disks, the individual disks being made from stainless steel or silicon. Accordingly, conventional machining processes such as eroding, punching or etching are used in the manufacture of the opening geometries in the panes.
  • Each individual disc of the atomizing attachment is manufactured separately, after which, in accordance with the desired number of disks, all of the same size disks are stacked on top of one another to form the complete atomizing attachment.
  • the swirl disk according to the invention with the characterizing features of claim 1 has the advantage that it is inexpensive to manufacture in a particularly simple manner.
  • a particular advantage is that the swirl disks can be produced in a reproducible manner extremely precisely in large numbers at the same time (high batch capability).
  • Such swirl disks are very shatterproof and easy to assemble, for example on injection valves or other spray nozzles of liquids of any kind.
  • the use of multilayer electroplating allows extremely great freedom of design, since the contours of the opening areas (inlet areas, swirl channels, swirl chamber, outlet opening) in the Swirl plate are freely selectable. This flexible design is particularly advantageous in comparison to silicon wafers, where the contours that can be achieved due to the crystal axes are strictly specified (truncated pyramids).
  • Metallic deposition has the advantage of a very large variety of materials, especially when compared to the production of silicon wafers.
  • a wide variety of metals with their different magnetic properties and hardness can be used in the micro-electroplating used to manufacture the swirl discs.
  • the different hardnesses of the different metals can be used in a particularly advantageous manner in that a sealing material area is created.
  • the upstream layer represents a cover layer that completely covers the swirl chamber of a middle swirl generation layer.
  • the swirl generation layer is formed by one or more material areas which, on account of their contouring and their geometric position relative to one another, define the contours of the swirl chamber and the swirl channels.
  • the material areas can have very different shapes depending on the desired contouring of the swirl channels, for example web-like or spiral.
  • the contours of the swirl chamber, the cover layer and the outlet opening can also be designed flexibly, with particular inclined, for example motor-specific, spray patterns and spray shapes being able to be generated by asymmetries of certain opening contours.
  • the swirl disk is designed in such a way that the material areas are shaped so that they differ from one another in such a way that all swirl channels have a different orientation with respect to the axis of symmetry of the swirl disk. Seen over the circumference of the swirl disk, the swirl channels run in such a way that their radial orientations and their tangential swirl orientations continuously change in opposite directions. In a structurally very simple manner, such a design ensures that a swirling, rotationally symmetrical hollow cone spray is sprayed with a uniform distribution over the circumference of the hollow cone. Without subsequent, mechanically manufactured components, sprays inclined to the axis of symmetry can be produced with the above-mentioned properties.
  • the fuel injector according to the invention with the characterizing features of claim 23 has the advantage that with it a very high atomization quality fuel to be sprayed and a jet or spray molding adapted to the respective requirements (for example installation conditions, engine configurations, cylinder shapes, spark plug position) is achieved.
  • a very high atomization quality fuel to be sprayed and a jet or spray molding adapted to the respective requirements for example installation conditions, engine configurations, cylinder shapes, spark plug position
  • FIG. 1 shows a fuel injector that can be equipped with a swirl disk, in section
  • FIG. 2 shows a schematic diagram as a top view of a swirl disk according to the invention
  • FIG. 3 shows a section along the line III-III in FIG. 2
  • FIG. 4 shows a first exemplary embodiment of a multilayer electroplating swirl disk
  • FIG. 5 6 shows a third embodiment of a swirl disk
  • FIG. 7 shows a fourth embodiment of a swirl disk
  • FIG. 8 shows a fifth embodiment of a swirl disk
  • FIG. 9 shows a sixth embodiment of a swirl disk
  • FIG. 10 shows a seventh embodiment of a swirl disk
  • FIG. 12 a ninth exemplary embodiment of a swirl disc
  • FIGS. 4 to 11 likewise being “glass” principle representations which emphasize the opening contours as plan views of the swirl discs.
  • the electromagnetically actuated valve shown in the form of an example in FIG Injection valve for fuel injection systems of mixture-compressing, spark-ignition internal combustion engines has a tubular, largely hollow cylindrical core 2, which is at least partially surrounded by a magnetic coil 1 and serves as the inner pole of a magnetic circuit.
  • the fuel injection valve is particularly suitable as a high-pressure injection valve for the direct injection of fuel into a combustion chamber of an internal combustion engine.
  • an injection valve for gasoline or diesel application, for direct or intake manifold injection
  • These swirl disks can also be used in inkjet printers, on nozzles for spraying liquids of any kind or in inhalers are used.
  • the swirl disks according to the invention are generally suitable for producing fine sprays with swirl components.
  • a stepped coil body 3 made of plastic takes up the winding of the magnetic coil 1 and, in conjunction with the core 2 and an annular, non-magnetic intermediate part 4 with an L-shaped cross section partially surrounded by the magnetic coil 1, enables a particularly compact and short structure of the injection valve in the area of the magnetic coil 1.
  • a continuous longitudinal opening 7 is provided in the core 2 and extends along a longitudinal valve axis 8.
  • the core 2 of the magnetic circuit also serves as a fuel inlet connection, the longitudinal opening 7 representing a fuel supply channel.
  • the Magnetic coil 1 With the core 2 above the Magnetic coil 1 is firmly connected to an outer metal (e.g. ferritic) housing part 14, which closes the magnetic circuit as an outer pole or outer guide element and completely surrounds the magnetic coil 1 at least in the circumferential direction.
  • a fuel filter 15 is provided on the inlet side, which ensures that those fuel components are filtered out which, because of their size, could cause blockages or damage in the injection valve.
  • the fuel filter 15 is, for. B. fixed by pressing in the core 2.
  • the core 2 forms with the housing part 14 the inlet-side end of the fuel injector, the upper housing part 14, for example, just extending beyond the magnetic coil 1 as seen downstream in the axial direction.
  • a lower tubular housing part 18 connects tightly and firmly, which, for. B. an axially movable valve part consisting of an armature 19 and a rod-shaped valve needle 20 or an elongated valve seat support 21 encloses or receives.
  • the movable valve part could e.g. also have the shape of a flat disc with an integrated anchor.
  • the two housing parts 14 and 18 are, for. B. firmly connected to each other with a circumferential weld.
  • the lower housing part 18 and the largely tubular valve seat support 21 are firmly connected to each other by screwing; Welding, soldering or flanging are also possible joining methods.
  • the sealing between the housing part 18 and the valve seat carrier 21 takes place, for. B. by means of a sealing ring 22.
  • the valve seat support 21 has An inner through opening 24 extends concentrically to the longitudinal axis 8 of the valve over its entire axial extent.
  • the valve seat support 21 surrounds a disc-shaped valve seat element 26 fitted in the through opening 24 with a frustoconically tapering valve seat surface 27.
  • the z. B. arranged rod-shaped, a largely circular cross-section valve needle 20; which has a valve closing section 28 at its downstream end.
  • This, for example, conically tapering valve closing section 28 interacts in a known manner with the valve seat surface 27 provided in the valve seat element 26.
  • the valve seat element 26 Downstream of the valve seat surface 27, the valve seat element 26 is followed by a swirl disk 30 according to the invention, which is produced by means of multilayer electroplating and comprises three metallic layers deposited on one another.
  • the injection valve is actuated electromagnetically in a known manner.
  • the electromagnetic circuit with the magnet coil 1, the core 2, the housing parts 14 and 18 and the armature serves to axially move the valve needle 20 and thus to open against the spring force of a return spring 33 arranged in the longitudinal opening 7 of the core 2 or to close the injection valve 19.
  • the armature 19 is with the valve closing section 28 facing away from the end of the valve needle 20 z. B. connected by a weld and aligned to the core 2.
  • Valve needle 20 during its axial movement with armature 19 along valve longitudinal axis 8 serves on the one hand a guide opening 34 provided in valve seat carrier 21 at the end facing armature 19 and on the other hand a disk-shaped guide element 35 with a dimensionally accurate guide opening 36 arranged upstream of valve seat element 26.
  • Armature 19 is during its axial movement surrounded by the intermediate part 4.
  • another excitable actuator e.g. a piezo stack can be used in a comparable fuel injection valve or the actuation of the axially movable valve part can be carried out by means of hydraulic pressure or servo pressure.
  • An adjusting sleeve 38 inserted, pressed or screwed into the longitudinal opening 7 of the core 2 is used to adjust the spring preload of the return spring 33 which bears against the adjusting sleeve 38 with its upstream side and which is supported with its opposite side on the armature 19 by means of a centering piece 39.
  • One or more bore-like flow channels 40 are provided in the armature 19, through which the fuel can pass from the longitudinal opening 7 in the core 2 via connecting channels 41 formed downstream of the flow channels 40 near the guide opening 34 in the valve seat carrier 21 and into the through opening 24.
  • the stroke of the valve needle 20 is predetermined by the installation position of the valve seat element 26.
  • An end position of the valve needle 20 is when the solenoid 1 is not excited by the contact of the valve closing section 28 on the Valve seat surface 27 of the valve seat element 26 is fixed, while the other end position of the valve needle 20 when the magnet coil 1 is excited results from the contact of the armature 19 on the downstream end face of the core 2.
  • the surfaces of the components in the latter stop area are chromed, for example.
  • the electrical contacting of the magnetic coil 1 and thus its excitation takes place via contact elements 43, which are provided outside of the coil former 3 with a plastic encapsulation 44.
  • the plastic encapsulation 44 can also extend over further components (eg housing parts 14 and 18) of the fuel injector.
  • An electrical connecting cable 45 runs out of the plastic encapsulation 44, via which the energization of the magnetic coil 1 takes place.
  • the plastic encapsulation 44 projects through the upper housing part 14, which is interrupted in this area.
  • the through opening 24 of the valve seat support 21 is, for example, stepped twice.
  • a first shoulder 49 serves as a contact surface for a helical compression spring 50, for example.
  • the second stage 51 creates an enlarged installation space for the three disk-shaped elements 35, 26 and 30.
  • the compression spring 50 enveloping the valve needle 20 tensions the guide element 35 in the valve seat carrier 21, since its side opposite the shoulder 49 presses against the guide element 35.
  • an outlet opening 53 is introduced in the valve seat element 26, through which the opening on the valve seat surface 27 is open when the valve is open fuel flowing along flows to subsequently enter the swirl disk 30.
  • the swirl disk 30 is present, for example, in a recess 54 of a disk-shaped holding element 55, the holding element 55 being fixedly connected to the valve seat carrier 21, for example by means of welding, gluing or by jamming.
  • the mounting variant of the swirl disk 30 shown in FIG. 1 is only shown in a simplified manner and shows only one of many mounting options that can be varied. What is decisive is the basic arrangement of the micro-electroplated swirl disk 30 downstream of the valve seat surface 27.
  • a central outlet opening 56 is formed in the holding element 55 downstream of the depression 54 facing the valve seat, through which the now swirling fuel leaves the fuel injection valve.
  • FIG. 2 shows a schematic diagram of a swirl disk 30 according to the invention
  • Figure 3 shows a section along the line III-III in Figure 2.
  • a plan view of the swirl disk 30 is shown in FIG. 2, in which all layers of the swirl disk 30 become clear on account of a “glass” representation.
  • the layer structure in the axial direction is particularly clearly identified in FIG. 3, which is ultimately an enlarged illustration of the swirl disk region from FIG. 1.
  • FIG. 3 different hatchings were chosen for the individual layers deposited, although it should be emphasized that the swirl disks 30 are one-piece components, since the individual layers are deposited directly on top of one another and are not added subsequently.
  • the layers of the spiral plate 30 are successively galvanically deposited, so that the subsequent layer is firmly connected to the layer below due to galvanic adhesion.
  • the swirl disk 30 has an outer diameter such that it is tight with little play in a receiving opening on the fuel injector, e.g. can be fitted into the recess 54 of the holding element 55 or into an opening of the valve seat support 21.
  • the swirl disk 30 is formed from three galvanically separated planes, layers or layers, which consequently follow one another axially in the installed state.
  • the three layers of the swirl disk 30 are referred to below according to their function with cover layer 60, swirl generation layer 61 and bottom layer 62.
  • the upper cover layer 60 has a smaller outer diameter than the two layers 61, 62 following it educated.
  • Swirl disks 30 can also be produced in the manner according to the invention with more than three layers, the structure of the layers 60, 61, 62 described above also looking in a comparable manner in these cases, but e.g. on the cover layer 60, a fourth structural layer (not shown) has also grown, which can be expedient for certain installation conditions and for flow reasons.
  • the upper cover layer 60 represents a closed metallic layer which has no opening areas for flow through, but which is due to its smaller size Diameter is surrounded by an annular flow region 67.
  • a complex opening contour is provided in the swirl generation layer 61, which extends over the entire axial thickness of this layer 61.
  • the opening contour of the middle layer 61 is formed by an inner swirl chamber 68 and by a plurality of swirl channels 66 opening into the swirl chamber 68.
  • the middle layer 61 has a largely square swirl chamber 68 and four swirl channels 66.
  • the swirl channels 66 for example, each running perpendicular to the adjacent swirl channels 66, open tangentially into the swirl chamber 68.
  • the swirl channels 66 are only partially covered, since the outer ends facing away from the swirl chamber 68 form the inlet regions 65 which are open towards the top.
  • the tangential opening of the swirl channels 66 into the swirl chamber 68 imparts an angular momentum to the fuel, which is thus retained in a central circular outlet opening 69 of the lower bottom layer 62.
  • the diameter of the outlet opening 69 is, for example, significantly smaller than the opening width of the swirl chamber 68 located directly above it. This increases the swirl intensity generated in the swirl chamber 68.
  • the fuel is sprayed out in a hollow cone by centrifugal force.
  • the starting point for the process is a flat and stable carrier plate, which, for. B. can consist of metal (titanium, steel), silicon, glass or ceramic.
  • at least one auxiliary layer is initially applied to the carrier plate.
  • it is a Electroplating start layer (e.g. TiCuTi, CrCuCr, Ni), which is required for electrical conduction for the later micro-electroplating.
  • the application of the auxiliary layer happens z. B. by sputtering or by electroless metal deposition.
  • a photoresist photoresist
  • the thickness of the photoresist should correspond to the thickness of the metal layer that is to be realized in the subsequent electroplating process, that is to say the thickness of the lower bottom layer 62 of the swirl disk 30.
  • the resist layer can consist of one or more layers of a photostructurable film or a liquid resist (polyimide, Photoresist). If an optional sacrificial layer is to be galvanized into the lacquer structures created later, the thickness of the photoresist must be increased by the thickness of the sacrificial layer.
  • the metal structure to be realized is to be transferred inversely in the photoresist using a photolithographic mask. One possibility is to expose the photoresist directly over the mask by means of UV exposure (circuit board exposer or semiconductor exposer) (UV depth lithography) and then to develop it.
  • the negative structure ultimately created in the photoresist to the later layer 62 of the swirl disk 30 is galvanically filled with metal (eg Ni, NiCo, NiFe, NiW, Cu) (metal deposition). Due to the electroplating, the metal fits closely to the contour of the negative structure, so that the specified contours reproduce in it in a true-to-form manner become.
  • metal eg Ni, NiCo, NiFe, NiW, Cu
  • the steps from the optional application of the auxiliary layer must be repeated in accordance with the number of layers desired, so that three electroplating steps are carried out on a three-layer swirl disk 30.
  • Different metals can also be used for the layers of a swirl disk 30, but these can only be used in a new electroplating step.
  • the cover layer 60 of the swirl disk 30 metal is deposited both on the conductive material areas 61 ′ and on the non-conductive photoresist in the area of the swirl channels 66 and the swirl chamber 68.
  • a starting layer metallization is applied to the resist of the preceding middle layer 61.
  • the remaining photoresist is removed from the metal structures by wet-chemical stripping.
  • the swirl disks 30 can be detached from the substrate and separated.
  • the sacrificial layer is selectively etched away from the substrate and the swirl disc 30, as a result of which the swirl discs 30 can be lifted off the carrier plate and separated.
  • FIGS. 4 to 12 show nine exemplary embodiments of multilayer electroplating swirl disks 30, wherein these figures, like FIG. 2, are "glass" schematic diagrams that emphasize the opening contours. Depending on the desired use, these different embodiments can be used to generate conventional rotationally symmetrical ones Spray cones, but also of flat jet images or inclined asymmetrical jet images are used.
  • FIG. 4 shows a swirl disk 30, which in turn has the three layers 60, 61 and 62.
  • the upper cover layer 60 and the lower base layer 62 are shaped in a manner comparable to FIG. 2, that is to say with a circular contour, the base layer 62 having a larger outside diameter and a central outlet opening 69.
  • the middle swirl generation layer 61 differs from that shown in FIG. While in the exemplary embodiment according to FIG. 2, the four material regions 61 ′ spaced apart from one another in the circumferential direction, between which the contours of the swirl channels 65 and the swirl chamber 68 result, originate from the outer edge of the swirl disk 30, the material regions 61 ′ of the swirl generation layer 61 according to FIG. 4 each formed web-like and spaced from the outer edge of the swirl disk 30.
  • the four material areas 61 ' are largely perpendicular to the respectively adjacent material areas 61' and form the swirl channels 66 covered by the cover layer 60 at a defined distance from one another.
  • the ends 70 of the material areas 61 'which radially delimit the swirl chamber 68 are rounded off, for example, in a blade-shaped manner, so that the contour of the material areas 61 'already serves to generate the swirl of the fuel to be sprayed off and a circular swirl chamber 68 is formed.
  • the ends 71 of the material regions 61 'opposite the inner ends 70 are also rounded, for example, on their outer contour, as a result of which a joining diameter is specified with which the swirl disk 30 can be inserted and fastened in a simple manner, for example in an opening of a fuel injection valve.
  • the outlet opening 69 can also be made eccentrically in the bottom layer 62, as is the outlet opening 69a indicated by a dash-dot line in FIG. 4 shows.
  • a possible desired unequal distribution over the circumference of the hollow or full cone can also be achieved with such a design variant, so that there is asymmetry in several respects.
  • FIGS. 5 and 6 show swirl disks 30 which have elliptical outlet openings 69 in the bottom layer 62.
  • a swirl disk 30 designed in this way can be used to generate swirled flat jet images.
  • the swirl disk 30 according to FIG. 5 has a rotationally symmetrical swirl chamber 68; the swirl disk 30 according to FIG. 6, on the other hand, has an elliptical swirl chamber 68 which is adapted to the contour of the outlet opening 69 and ensures a particularly uniform flow.
  • FIGS. 7 and 8 illustrate swirl disks 30 with spiral-shaped material areas 61 'of the swirl generation layer 61.
  • the swirl channels 66 point in particular in the example shown in FIG Flow direction a cross-sectional narrowing to reduce flow losses, since the narrowest point is limited to a short run length.
  • the geometry of the spray cone formed downstream of the outlet opening 69 is determined by the swirl speed of the fluid. Higher swirl speeds result in spray cones with larger spray angles.
  • the swirl speeds can also be set by the ratio of the diameter of the swirl chamber 68 and the outlet opening 69 and by the swirl channel cross section.
  • An essential point of the present invention is to have found geometries for the swirl disk 30 with which the above-mentioned goal can be achieved very easily.
  • the swirl disk 30 produced by means of multilayer electroplating has only largely vertical walls due to the production technology, with which the walls are still insulated when viewed in isolation no oblique spray seems possible.
  • an asymmetrical spraying is ensured by the asymmetry in the contouring in at least one of the layers of the swirl disk 30, and it is also advantageous that downstream, precision-engineered components can be dispensed with in which of course would be easy to insert an oblique spray hole.
  • downstream components such as spray perforated disks are conceivable (see FIG. 12).
  • FIG. 9 shows a swirl disk 30 according to the invention, with which, despite the vertical walls of all opening areas, a spray can be produced which is inclined at an angle to the symmetry axis of the swirl disk 30 and, for example, has a uniform distribution over the circumference of the hollow cone.
  • Four material regions 61 ' are provided in the middle swirl generation layer 61, all of which have a different contour.
  • Four swirl channels 66 are formed between the material areas 61 ', which are characterized by a different position with respect to the swirl chamber 68 due to the contour differences of the material areas 61' and are therefore identified by I to IV. With their alignment in the fluid to be sprayed, the four swirl channels 66 have to produce ratios of different sizes between the swirl speed and radial speed components.
  • the radial speed component continuously decreases from swirl channel 66-I to swirl channel 66-IV, while the swirl speed component continuously increases from swirl channel 66-I to swirl channel 66-IV.
  • the outlet opening 69 is at this Example elliptical and as short as possible in the axial direction. While the first swirl channel 66-I is largely aligned with the center of the elliptical outlet opening 69, this radial alignment decreases clockwise in the example according to FIG. 9 until the fourth swirl channel 66-IV is directed tangentially past the outlet opening 69.
  • FIG. 9 In the exemplary embodiment shown in FIG.
  • a spray to be sprayed out would emerge obliquely inclined to the left between the swirl channels 66-III and 66-IV in a spraying direction into the plane of the drawing.
  • This beam alignment is indicated by an arrow and ⁇ , where ⁇ indicates an angle of the spray to the axis of symmetry of the swirl disk 30.
  • a rotationally symmetrical hollow cone spray with a uniform distribution over the hollow cone circumference only represents a spray form for the oblique spray described in more detail here, but also the other spray forms already listed in the introduction to the description, i.e. also those that have uneven distributions and streaks corresponding asymmetrical contouring can be generated in the swirl disk 30.
  • a first special feature is that the two lower layers 61 and 62 have an outer diameter of the same size, the middle swirl generation layer 61 only having a single contiguous material region 61 'includes.
  • the swirl channels 66 which largely open tangentially into the swirl chamber 68, are therefore not connected to the outer circumference of the swirl disk 30 with their inlet regions 65 facing away from the swirl chamber 68. Rather, there remains between the inlet regions 65 of the swirl channels 66 and the outer circumference of the swirl disk 30 a peripheral edge region of the material region 61 '.
  • FIG. 10 shows that a different number of swirl channels 66 (for example six) can also be produced with the multilayer electroplating.
  • the swirl channels 66 In addition to the design of the inlet areas 65 with a largely rectangular or square contour, it may also be advantageous to design the swirl channels 66 with their inlet areas 65 bent in a hook shape (not shown).
  • the fuel flowing into the inlet regions 65 can enter the swirl channels 66 with little turbulence, as a result of which a largely trouble-free swirl can be generated.
  • the inflow cross-section of the inlet regions 65 which is determined in the plane of the drawing and which is decisively determined by the overlap of the cover layer 60, is smaller than the swirl channel cross-section which results perpendicular to the plane of the drawing and is determined by the height and width of the swirl channel 66 becomes.
  • the inlet regions 65 are thus a pre-throttle and the flow-determining cross section of the swirl disk 30.
  • FIG. 11 shows one of the innumerable possible exemplary embodiments of a swirl disk 30 which can be produced with the multilayer electroplating and which, in addition to the material areas 61 ′ for forming the swirl channels 66 and for defining the contour and size of the swirl chamber 68, further material areas 61 ′′ within the swirl chamber 68 in of the swirl generation layer 61.
  • These additional Material areas 61 ′′ can be arranged in a targeted manner in such a way that a spray which is inclined at an angle to the axis of symmetry of the swirl disk 30 is sprayed, in the example shown in FIG. 11 in the direction indicated by the arrow and ⁇ .
  • Such oblique spraying is achieved by placing one or more sickle-shaped or arc-shaped (FIG.
  • any contours of the material areas 61 ′′ can be generated in the swirl chamber 68.
  • FIG. 12 shows an exemplary embodiment for a special choice of material for the individual layers 60, 61, 62 of the swirl disk 30.
  • multilayer electroplating it is possible without problems to deposit different metals (Ni, NiCo, NiFe, NiW, Cu) on one another, but within one electroplating step only one metal is deposited.
  • an advantageous sealing of the swirl disk 30 can be achieved when installed in a spray device, in particular on a fuel injector.
  • the cover layer 60 and the bottom layer 62 are constructed from a harder electroplating material (eg NiCo)
  • the middle swirl generation layer 61 is deposited from a softer electroplating material (eg Ni).
  • both layers 60 and 62 give the swirl disk 30 a high stability, which is required, for example, in high-pressure injection valves due to the high pressure load.
  • the swirl generation layer 61 has a further outer annular material region 75.
  • the material area 75 runs continuously around the circumference of the swirl disk 30 and serves as a sealing element. Since the upper cover layer 60 has a smaller diameter than the layers 61 and 62 underneath, the outer material region 75 is uncovered at the top. With this material area 75, the swirl disk 30 lies, for example, in a recess in the valve seat element 26, as illustrated in FIG. 12.
  • the soft material (Ni) of the region 75 allows a large compression path with relatively low mechanical stresses within the material region 75. The compression path allows the upper sealing surface of the material region 75 to form-fit against the surface of the hard valve seat element 26, thereby ensuring the sealing function. In such an embodiment, separate sealing elements can advantageously be dispensed with.
  • a sufficient permanent contact pressure of the material region 75 on the valve seat element 26 is achieved, for example, by arranging a spray perforated disk 76 downstream of the swirl disk 30, which is fixedly connected to the valve seat element 26, for example with a weld seam 77, and supports the swirl disk 30.
  • the spray hole disk 76 has, for example, a spray hole 78 which is inclined at an angle to the longitudinal axis 8 of the valve in order to implement the oblique spraying which has already been mentioned several times.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (49)

  1. Disque de rotation, notamment pour un injecteur, réalisé en une matière métallique avec un passage total pour un fluide, comprenant au moins une zone d'entrée (65) et au moins un orifice de sortie (69), cet orifice de sortie (69) étant réalisé dans la couche de fond inférieure (62), au moins deux canaux de rotation (66) qui débouchent dans une chambre de rotation (68), la chambre de rotation (68) étant prévue dans la couche intermédiaire (61) générant la rotation,
    caractérisé par
    - une couche supérieure comme couche formant couvercle (60) constituant une couche fermée sans contour d'ouverture sur toute la surface de sa section,
    - la couche de couverture (60) recouvrant complètement la chambre de rotation (68) qui se situe en dessous et
    - des couches du disque de rotation (30) réalisées les unes sur les autres par dépôt électrolytique de métal, en particulier par électrolyse multicouche pour réaliser un accrochage direct.
  2. Disque de rotation selon la revendication 1,
    caractérisé en ce que
    la couche intermédiaire (61) générant la rotation est formée par plusieurs zones de matière (61') écartées les unes des autres dans la direction périphérique et qui du fait de leur position géométrique respective prédéfinissent les contours de la chambre de rotation (68) et des canaux de rotation (66).
  3. Disque de rotation selon la revendication 2,
    caractérisé par
    quatre zones de matière (61') formant la couche (61) générant la rotation pour constituer entre elles une chambre de rotation (68) et quatre canaux de rotation (66).
  4. Disque de rotation selon les revendications 2 ou 3,
    caractérisé en ce que
    les zones de matière (61') s'étendent du diamètre extérieur de la couche de fond (62) inférieure, vers l'intérieur, jusqu'à la chambre de rotation (68).
  5. Disque de rotation selon les revendications 2 ou 3,
    caractérisé en ce que
    les zones de matière (61') s'étendent à distance de la périphérie extérieure de la couche de fond inférieur (62), cette distance fixant le diamètre extérieur de l'ensemble du disque de rotation (30).
  6. Disque de rotation selon la revendication 5.
    caractérisé en ce que
    les zones de matière (61') sont réalisées en forme d'entretoises.
  7. Disque de rotation selon la revendication 5 ou 6,
    caractérisé en ce que
    les zones de matière (61') sont arrondies en forme d'aubes à leur extrémité (70) tournée vers la chambre de rotation (68).
  8. Disque de rotation selon l'une des revendications 3 à 7,
    caractérisé en ce que
    les zones de matière (61') sont disposées pour délimiter une chambre de rotation (68) de forme circulaire, elliptique, ou polygonale ou une forme mixte.
  9. Disque de rotation selon la revendication 4 ou 5,
    caractérisé en ce que
    les zones de matière (61') sont en spirale.
  10. Disque de rotation selon la revendication 9,
    caractérisé en ce que
    les canaux de rotation (66) définis entre les zones de matière (61') ont un rétrécissement de section dans la direction de l'écoulement.
  11. Disque de rotation selon la revendication 2,
    caractérisé en ce que
    les zones de matière (61') ont une forme qui diffère l'une de l'autre pour que tous les canaux de rotation (66) ont une direction différente par rapport à l'axe de symétrie du disque de rotation (30).
  12. Disque de rotation selon la revendication 11,
    caractérisé en ce que
    vus dans leur direction périphérique, les canaux de rotation (66) sont dirigés pour que leur direction radiale et leur direction tangentielle de rotation varient en continu de façon opposée.
  13. Disque de rotation selon la revendication 1,
    caractérisé en ce que
    la couche intermédiaire (61), générant la rotation, est formée par une unique zone de matière (61'), cohérente, qui prédéfinit par sa géométrie, le contour de la chambre de rotation (68) et celui des canaux de rotation (66).
  14. Disque de rotation selon la revendication 13,
    caractérisé en ce que
    la zone de matière (61') est réalisée avec le même diamètre extérieur que la couche de fond inférieure (62).
  15. Disque de rotation selon les revendications 13 ou 14,
    caractérisé en ce que
    les canaux de rotation (66) ont à leur extrémité opposée à la chambre de rotation (68), des zones d'entrée (65) écartées par une zone de bord périphérique de la zone de matière (61') écartée de la périphérie extérieure du disque de rotation (30).
  16. Disque de rotation selon les revendications 15,
    caractérisé en ce que
    la section d'entrée horizontale de la zone d'entrée (65) libre, non couverte, est inférieure à la plus petite section verticale de chaque canal de rotation (66) du disque de rotation (30).
  17. Disque de rotation selon l'une des revendications précédentes,
    caractérisé par
    des zones de matière (61") pour influencer l'écoulement à l'intérieur de la chambre de rotation (68).
  18. Disque de rotation selon l'une des revendications précédentes,
    caractérisé en ce qu'
    on utilise au moins deux matériaux différents pour réaliser les couches (60, 61, 62).
  19. Disque de rotation selon la revendication 18,
    caractérisé en ce que
    la couche de couverture (60) et la couche de fond (62) sont en une matière galvanique plus dure que la couche intermédiaire (61) générant la rotation.
  20. Disque de rotation selon l'une des revendications précédentes,
    caractérisé par
    au moins un orifice de sortie (69) dans la couche de fond (62), cet orifice étant de forme circulaire, elliptique, ou polygonale ou une forme mixte.
  21. Disque de rotation selon l'une des revendications précédentes,
    caractérisé par
    au moins un orifice de sortie (69) prévu dans la couche de fond (62) au milieu ou de façon décentrée par rapport à l'axe de symétrie du disque de rotation (30).
  22. Disque de rotation selon l'une des revendications précédentes,
    caractérisé en ce que
    la couche de recouvrement (60), supérieure, a un diamètre extérieur plus petit que la couche de fond inférieure (62).
  23. Injecteur de carburant pour un système d'injection de carburant d'un moteur à combustion interne, notamment pour l'injection directe de carburant dans la chambre de combustion d'un moteur à combustion interne, comprenant un axe longitudinal d'injecteur (8), un actionneur (1, 2, 3, 14, 18, 19), une partie de soupape (20). mobile pour ouvrir et fermer l'injecteur en coopérant avec un siège de soupape (27) fixe prévu sur un élément de siège de soupape (26), ainsi qu'un disque de rotation (30) en aval du siège de soupape (27), ce disque ayant une structure à plusieurs couches en au moins une matière métallique et qui présente à la fois au moins une zone d'entrée (65) et au moins une zone de sortie (69), au moins la zone de sortie (69) étant réalisée dans la couche de fond inférieure (62) en comportant une chambre de rotation (68) et au moins deux canaux de rotation (66) débouchant dans la chambre en amont de l'orifice de sortie (69),
    caractérisé en ce que
    - le disque de rotation (30) comporte une couche supérieure comme couche de couverture (60) constituant sur toute la surface de sa section une couche fermée sans contour d'ouverture,
    - la couche de couverture (60) couvre complètement la chambre de rotation (68) située en dessous et
    - les couches du disque de rotation (30) sont réalisées par dépôt métallique par électrolyse, notamment par électrolyse multicouche, pour être accrochées directement les unes aux autres.
  24. Injecteur de carburant selon la revendication 23.
    caractérisé en ce que
    la couche intermédiaire (61) du disque de rotation (60) qui génère la rotation est formée par plusieurs zones de matière (61') écartées les unes des autres dans la direction périphérique et qui forment, par leur position géométrique respective, le contour de la chambre de rotation (68) et celui des canaux de rotation (66).
  25. Injecteur de carburant selon la revendication 24,
    caractérisé en ce que
    quatre zones de matière (61') forment la couche générant la rotation (61) pour constituer entre elles une chambre dc rotation (68) et quatre canaux de rotation (66).
  26. Injecteur de carburant selon les revendications 24 ou 25,
    caractérisé en ce que
    les zones de matière (61') s'étendent à partir du diamètre extérieur de la couche de fond inférieure (62) vers l'intérieur vers la chambre de rotation (68).
  27. Injecteur de carburant selon la revendication 24 ou 25,
    caractérisé en ce que
    les zones de matière (61') s'étendent à une certaine distance de la périphérie extérieure de la couche de fond inférieure (62) fixant le diamètre extérieur de l'ensemble du disque de rotation (30).
  28. Injecteur de carburant selon la revendication 27,
    caractérisé en ce que
    les zones de matière (61') sont réalisées en forme d'entretoises.
  29. Injecteur de carburant selon les revendications 27 ou 28,
    caractérisé en ce que
    les zones de matière (61') ont des extrémités (70) tournées vers la chambre de rotation (68) qui sont arrondies en forme d'aubes.
  30. Injecteur de carburant selon l'une des revendications 25 à 29,
    caractérisé en ce que
    les zones de matière (61') sont disposées pour délimiter une chambre de rotation (68) de forme circulaire, elliptique ou polygonale ou une forme mixte.
  31. Injecteur de carburant selon la revendication 26 ou 27,
    caractérisé en ce que
    les zones de matière (61') sont en forme de spirale.
  32. Injecteur de carburant selon la revendication 31.
    caractérisé en ce que
    les canaux de rotation (66) entre les zones de matière (61') ont un rétrécissement de section dans la direction de l'écoulement.
  33. Injecteur de carburant selon la revendication 24,
    caractérisé en ce que
    les zones de matière (61') ont une forme qui diffère l'une de l'autre pour que tous les canaux de rotation (66) présentent un alignement différent par rapport à l'axe de symétrie du disque de rotation (30).
  34. Injecteur de carburant selon la revendication 33,
    caractérisé en ce que
    les canaux de rotation (66) ont une périphérie telle que leur direction radiale et leur direction de rotation tangentielle varient en continu de façon opposée.
  35. Injecteur de carburant selon la revendication 23,
    caractérisé par
    une couche intermédiaire (61) du disque de rotation (30) qui génère la rotation et qui est formée par une seule zone de matière cohérente (61') dont la géométrie prédéfinit le contour de la chambre de rotation (68) et des canaux de rotation (66).
  36. Injecteur de carburant selon la revendication 35,
    caractérisé en ce que
    la zone de matière (61') a le même diamètre extérieur que la couche de fond inférieure (62).
  37. Injecteur de carburant selon la revendication 35 ou 36,
    caractérisé en ce que
    les canaux de rotation (66) ont des zones d'entrée (65) à leur extrémité opposée à celle de la chambre de rotation (68), et ces zones d'entrée sont écartées par une zone de bord périphérique de la zone de matière (61') par rapport à la périphérie extérieure du disque de rotation (30).
  38. Injecteur de carburant selon la revendication 37,
    caractérisé en ce que
    la section d'entrée horizontale de la zone d'entrée libre (65) non couverte est inférieure à la plus petite section verticale de chaque canal de rotation (66) du disque de rotation (30).
  39. Injecteur de carburant selon l'une des revendications 23 à 38,
    caractérisé par
    des zones de matière (61") pour influencer l'écoulement à l'intérieur de la chambre de rotation (68).
  40. Injecteur de carburant selon l'une des revendications 23 à 39,
    caractérisé en ce qu'
    on utilise au moins deux matériaux différents pour la réalisation des couches (60, 61, 62).
  41. Injecteur de carburant selon la revendication 40,
    caractérisé en ce que
    la couche de couverture (60) et la couche de fond (62) sont réalisées en une matière d'électrolyse plus dure que la couche intermédiaire (61) générant la rotation.
  42. Injecteur de carburant selon l'une des revendications 23 à 41,
    caractérisé en ce qu'
    au moins un orifice de sortie (69) de la couche de fond (62) a une forme circulaire, elliptique ou polygonale ou une forme mixte.
  43. Injecteur de carburant selon l'une des revendications 23 à 42,
    caractérisé en ce qu'
    au moins un orifice de sortie (69) de la couche de fond (62) est réalisé au milieu ou de manière excentrée par rapport à l'axe de symétrie du disque de rotation (30).
  44. Injecteur de carburant selon l'une des revendications 23 à 43,
    caractérisé en ce que
    la couche de couverture supérieure (60) a un diamètre extérieur plus petit que la couche de fond inférieure (62).
  45. Injecteur de carburant selon l'une des revendications 23 à 44,
    caractérisé en ce que
    le disque de rotation (30) est réalisé avec au moins une zone de matière (75) pour que cette zone de matière (75) assure l'étanchéité par rapport au siège de soupape (26).
  46. Injecteur de carburant selon l'une des revendications 23 à 45,
    caractérisé en ce que
    le disque de rotation (30) est fixé par soudage, collage ou serrage, à un élément de fixation (55) prévu en aval de l'élément formant siège de soupape (26).
  47. Injecteur de carburant selon la revendication 46,
    caractérisé en ce que
    l'élément de fixation (55) est une pastille à orifice d'éjection (76).
  48. Injecteur de carburant selon l'une des revendications 23 à 45,
    caractérisé en ce que
    le disque de rotation (30) est fixé par soudage, collage ou serrage, à un support de siège de soupape (21).
  49. Injecteur de carburant selon l'une des revendications 23 à 48,
    caractérisé par
    plusieurs disques de rotation (30) assemblés en un paquet en sandwich.
EP99924737A 1998-04-08 1999-04-01 Disque de turbulence et soupape d'injection de carburant equipee de ce dernier Expired - Lifetime EP1012473B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19815775 1998-04-08
DE19815775A DE19815775A1 (de) 1998-04-08 1998-04-08 Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe
PCT/DE1999/000983 WO1999053195A1 (fr) 1998-04-08 1999-04-01 Disque de turbulence et soupape d'injection de carburant equipee de ce dernier

Publications (2)

Publication Number Publication Date
EP1012473A1 EP1012473A1 (fr) 2000-06-28
EP1012473B1 true EP1012473B1 (fr) 2003-09-10

Family

ID=7864011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99924737A Expired - Lifetime EP1012473B1 (fr) 1998-04-08 1999-04-01 Disque de turbulence et soupape d'injection de carburant equipee de ce dernier

Country Status (6)

Country Link
US (1) US6695229B1 (fr)
EP (1) EP1012473B1 (fr)
JP (1) JP2002504206A (fr)
KR (1) KR20010012982A (fr)
DE (2) DE19815775A1 (fr)
WO (1) WO1999053195A1 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10048935A1 (de) * 2000-10-04 2002-04-11 Bosch Gmbh Robert Brennstoffeinspritzventil
DE10118276A1 (de) 2001-04-12 2002-10-17 Bosch Gmbh Robert Brennstoffeinspritzventil
US7191961B2 (en) * 2002-11-29 2007-03-20 Denso Corporation Injection hole plate and fuel injection apparatus having the same
JP4154317B2 (ja) * 2003-04-25 2008-09-24 トヨタ自動車株式会社 燃料噴射弁
US7438241B2 (en) * 2004-11-05 2008-10-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7124963B2 (en) * 2004-11-05 2006-10-24 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7198207B2 (en) * 2004-11-05 2007-04-03 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7185831B2 (en) * 2004-11-05 2007-03-06 Ford Motor Company Low pressure fuel injector nozzle
US7168637B2 (en) 2004-11-05 2007-01-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7104475B2 (en) * 2004-11-05 2006-09-12 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7051957B1 (en) * 2004-11-05 2006-05-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7137577B2 (en) * 2004-11-05 2006-11-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
DE102005023793B4 (de) * 2005-05-19 2012-01-12 Ulrich Schmid Vorrichtung zur Drallerzeugung in einem Kraftstoffeinspritzventil
JP5730024B2 (ja) * 2011-01-12 2015-06-03 三菱日立パワーシステムズ株式会社 噴霧ノズル及び噴霧ノズルを有する燃焼装置
JP2012215135A (ja) * 2011-04-01 2012-11-08 Hitachi Automotive Systems Ltd 燃料噴射弁
KR20130071909A (ko) * 2011-12-21 2013-07-01 두산인프라코어 주식회사 와류 분사형 노즐을 구비한 커먼 레일 인젝터
JP5852463B2 (ja) * 2012-02-14 2016-02-03 日立オートモティブシステムズ株式会社 燃料噴射弁
JP2014173477A (ja) * 2013-03-08 2014-09-22 Hitachi Automotive Systems Ltd 燃料噴射弁
JP5978154B2 (ja) * 2013-03-08 2016-08-24 日立オートモティブシステムズ株式会社 燃料噴射弁
DE102013212191A1 (de) * 2013-06-26 2014-12-31 Robert Bosch Gmbh Verfahren und Vorrichtung zum Einblasen eines gasförmigen Mediums
US9573146B2 (en) * 2013-08-15 2017-02-21 Delavan Inc Double swirl chamber swirlers
GB2528954B (en) * 2014-08-07 2017-05-24 Clyde Process Ltd Adjustable multi-hole orifice plate in a pneumatic conveying apparatus
CN109862967B (zh) * 2016-09-13 2021-10-08 品谱股份有限公司 涡旋壶淋浴头引擎
DE102018203065A1 (de) * 2018-03-01 2019-09-05 Robert Bosch Gmbh Verfahren zur Herstellung eines Injektors
US11015559B2 (en) 2018-07-27 2021-05-25 Ford Global Technologies, Llc Multi-hole fuel injector with twisted nozzle holes
US10808668B2 (en) 2018-10-02 2020-10-20 Ford Global Technologies, Llc Methods and systems for a fuel injector
DE102023117145A1 (de) * 2023-06-29 2025-01-02 Lechler Gmbh Sprühdüse, Anordnung mit einer Sprühdüse und Verfahren zum Herstellen einer Sprühdüse
US12454916B2 (en) 2023-12-14 2025-10-28 Collins Engine Nozzles, Inc. Multi-component swirl valves

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014487A1 (fr) * 1997-09-16 1999-03-25 Robert Bosch Gmbh Disque perfore ou disque de pulverisation et soupape injectrice dotee d'un tel disque perfore ou disque de pulverisation

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1440705A (en) * 1919-08-09 1923-01-02 Henry W Sumner Spray nozzle
US4040396A (en) 1974-03-28 1977-08-09 Diesel Kiki Co., Ltd. Fuel injection valve for internal combustion engine
GB8515847D0 (en) * 1985-06-22 1985-07-24 Lucas Ind Plc Fuel injection nozzle
DE3943005A1 (de) * 1988-12-28 1990-07-05 Hitachi Ltd Elektromagnetische einspritzventilvorrichtung
US5435884A (en) * 1993-09-30 1995-07-25 Parker-Hannifin Corporation Spray nozzle and method of manufacturing same
US5570841A (en) 1994-10-07 1996-11-05 Siemens Automotive Corporation Multiple disk swirl atomizer for fuel injector
DE19607288A1 (de) 1995-03-29 1996-10-02 Bosch Gmbh Robert Verfahren zur Herstellung einer Lochscheibe
WO1996030645A1 (fr) * 1995-03-29 1996-10-03 Robert Bosch Gmbh Procede de fabrication d'un disque perfore
CN1144943C (zh) * 1995-03-29 2004-04-07 罗伯特·博施有限公司 尤其用于喷油嘴的孔板
JPH10502130A (ja) * 1995-03-29 1998-02-24 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 特に噴射弁に用いられる孔付板
DE19639506A1 (de) * 1996-09-26 1998-04-02 Bosch Gmbh Robert Lochscheibe und Ventil mit einer Lochscheibe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999014487A1 (fr) * 1997-09-16 1999-03-25 Robert Bosch Gmbh Disque perfore ou disque de pulverisation et soupape injectrice dotee d'un tel disque perfore ou disque de pulverisation

Also Published As

Publication number Publication date
DE19815775A1 (de) 1999-10-14
KR20010012982A (ko) 2001-02-26
WO1999053195A1 (fr) 1999-10-21
DE59906940D1 (de) 2003-10-16
EP1012473A1 (fr) 2000-06-28
US6695229B1 (en) 2004-02-24
JP2002504206A (ja) 2002-02-05

Similar Documents

Publication Publication Date Title
EP1012473B1 (fr) Disque de turbulence et soupape d'injection de carburant equipee de ce dernier
EP1003966B1 (fr) Soupape d'injection de carburant
EP1019629A1 (fr) Disque diffuseur et soupape d'injection de carburant equipee de ce dernier
EP1336048A1 (fr) Soupape d'injection de carburant
EP0862690B1 (fr) Disque perfore et soupape munie d'un disque perfore
EP0914556B1 (fr) Soupape d'injection de carburant
EP1228306B1 (fr) Soupape d'injection de carburant avec element tourbillonnaire
DE19815800A1 (de) Brennstoffeinspritzventil
EP1313942B1 (fr) Rondelle de turbulence, notamment pour soupapes d'injection de carburant
DE19607288A1 (de) Verfahren zur Herstellung einer Lochscheibe
EP1012472A1 (fr) Soupape d'injection de carburant et procede de montage de ladite soupape
EP0939858B1 (fr) Disque perfore ou disque de pulverisation et soupape injectrice dotee d'un tel disque perfore ou disque de pulverisation
EP1399669B1 (fr) Soupape d'injection de carburant
EP1012471B1 (fr) Soupape d'injection de carburant
DE10048936A1 (de) Drallscheibe und Brennstoffeinspritzventil mit Drallscheibe
EP1379777A1 (fr) Soupape d'injection de carburant
DE102006047137A1 (de) Lochscheibe, Brennstoffeinspritzventil mit einer Lochscheibe und Verfahren zur Herstellung einer Lochscheibe
DE10118272A1 (de) Brennstoffeinspritzventil

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: 20000425

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

17Q First examination report despatched

Effective date: 20020828

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCINTILLA AG, DIREKTION

REF Corresponds to:

Ref document number: 59906940

Country of ref document: DE

Date of ref document: 20031016

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20031224

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: 20040401

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

Ref country code: LI

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

Effective date: 20040430

Ref country code: CH

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

Effective date: 20040430

ET Fr: translation filed
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: 20040614

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: 20041103

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20041231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: IT

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

Effective date: 20050401