EP0865574B1 - Soupape d'injection de carburant et son procede de fabrication - Google Patents

Soupape d'injection de carburant et son procede de fabrication Download PDF

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Publication number
EP0865574B1
EP0865574B1 EP97923728A EP97923728A EP0865574B1 EP 0865574 B1 EP0865574 B1 EP 0865574B1 EP 97923728 A EP97923728 A EP 97923728A EP 97923728 A EP97923728 A EP 97923728A EP 0865574 B1 EP0865574 B1 EP 0865574B1
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EP
European Patent Office
Prior art keywords
valve
fuel injection
plastic
sleeve
injection valve
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
EP97923728A
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German (de)
English (en)
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EP0865574A1 (fr
Inventor
Stefan Maier
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0865574A1 publication Critical patent/EP0865574A1/fr
Application granted granted Critical
Publication of EP0865574B1 publication Critical patent/EP0865574B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • 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
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • 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
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
    • 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
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus

Definitions

  • the invention is based on a fuel injector according to the preamble of claim 1 and a method for Manufacture of a fuel injector according to the Genus of claim 10.
  • a valve needle with an armature extends in the axial direction, which is passed through the sleeve.
  • the firm connections the sleeve with the core and the valve seat body are z. B. achieved by welding.
  • the core and the non-magnetic Sleeve together delimit an inner valve part to the outside, which is manufactured and adjusted separately and later the Interior of the fuel injector forms.
  • This inner The valve part is ultimately one of several others Individual components in the assembled state of the Injector surrounded, at least one cup-shaped Housing part, a magnetic coil with. Bobbin, a cup-shaped coil housing and a plug part required become.
  • the arrangement and design of the many, the Individual parts surrounding the valve part are relative consuming. It also needs a variety of connections between the outer individual parts and the inner valve part getting produced.
  • From DE-OS 43 10 819 is also a Fuel injector known which one non-magnetic thin-walled sleeve as valve seat support having.
  • the entire, pre-set Fuel injector, including the sleeve largely enclosed with a plastic encapsulation that starting from the core in the axial direction over the Magnet coil until the downstream termination of the Injector extends.
  • the deep-drawn sleeve has only a very small wall thickness ( ⁇ 0.3 mm) to the magnetic flux with the lowest possible losses over the to guide non-magnetic sleeve.
  • To overmold the Injector valves with plastic are high encapsulation pressures (up to 350 bar) required to deform the sleeve can lead, whereby assembly and functional problems of the Injector can occur.
  • the fuel injector according to the invention with the characterizing features of claim 1 has the advantage that it can be assembled inexpensively in a simple manner is.
  • this simplified assembly of the Fuel injector achieved in that two Main parts of the injection valve, a valve part and a Plastic part, made separately and can be set.
  • the inner valve part is in advantageously with a non-magnetic, thin-walled sleeve, whose Use a cost saving compared to known valves brings, because material savings are possible and on the Joining to connect individual components is partially omitted can be.
  • the outer Plastic part has an inner through opening, in which the valve part can be used very easily and by a simple, yet secure snap connection can be attached is.
  • the production of the Snap connection by engaging, snapping or Clip a locking element on the plastic part into a groove on the outer circumference of the valve part.
  • the locking elements can to have the most varied contours, e.g. B. angular or be rounded.
  • FIG. 1 shows it fuel injector according to the invention
  • Figure 2 a outer tubular plastic part
  • Figure 3 an inner Valve part
  • the parts of Figures 2 and 3 assembled and connected to one another according to a fuel injector Figure 1 result.
  • Electromagnetically actuated valve in the form of a Injector for fuel injection systems from mixture-compressing, spark-ignition internal combustion engines has one surrounded by a magnetic coil 1, as Fuel inlet connector serving tubular core 2.
  • a in the radial direction stepped bobbin 3 takes one Winding the solenoid 1 on and allows in Connection with the core 2 a particularly compact structure of the injection valve in the area of the solenoid coil 1.
  • the Magnetic coil 1 is at least with its coil body 3 one, for example designed as a bracket and as Surrounding ferromagnetic element serving guide element 5, that the magnetic coil 1 at least in the circumferential direction partially surrounds and with its upper end 6 on the core 2 is applied.
  • the at least one guide element 5 is of this type graduated that an axially parallel Main section 7 and the upper end 6 by a radial extending connecting section 8 are connected.
  • the Connection section 8 provides a lid of the Magnetic coil area upwards.
  • To close the magnetic circuit is the guide element 5 at its lower Late 9 z. B. with a cross-section L-shaped guide ring 9th for example by one or more welding spots connected after the limitation of the magnetic coil area below or in the downstream direction.
  • the the magnetic flux conductive parts guide element 5 and Guide ring 10 enclose the bobbin 3 wound magnetic coil 1 at least partially pot-shaped.
  • a lower core end 15 of the core 2 which is somewhat has a smaller outer diameter than the inlet side serving as the fuel inlet upper end of the core 2 concentric to a valve longitudinal axis 16 tightly as a Connecting part-serving tubular and thin-walled sleeve 18, for example by welding, connected and surrounding the core end 15 with an upper sleeve section 19 partially axial.
  • the bobbin 3 overlaps the Sleeve section 19 of the sleeve 18 at least partially axially.
  • the coil body 3 has namely over its entire axial Extension a larger inner diameter than that Diameter of the sleeve 18 in its upper sleeve section 19th
  • the tubular sleeve 18 from, for example non-magnetic steel extends downstream with a lower sleeve section 20 to the downstream Completion of the fuel injector, the lower Sleeve section 20 a slightly smaller diameter has the diameter of the upper sleeve section 19.
  • the diameter reduction in the form of a small paragraph 23 is located in the area of the upper end of the Leitring 10, since the Leitring 10 a minimally smaller Has inner diameter than the inner diameter of the Bobbin 3. This configuration contributes to the safe Assembly of the injector, which will be detailed later is described.
  • the sleeve 18 is thus over its entire axial length tubular.
  • the sleeve 18 forms over her total axial extent with a through opening 21 apart from paragraph 23 largely constant diameter, which runs concentrically to the valve longitudinal axis 16.
  • an anchor 24 With their sleeve section downstream of paragraph 23 surrounds the sleeve 18 an anchor 24 and further downstream a valve seat body 25.
  • Cup-shaped spray disk 26 is from the sleeve 18 in Circumferential direction also enclosed, the fixed Connection of valve seat body 25 and spray orifice plate 26 z.
  • B. realized by a circumferential dense weld is.
  • the sleeve 18 is thus not only a connecting part, but it also fulfills holding or carrier functions, especially for the valve seat body 25, so that the sleeve 18 really is valve seat support.
  • a z. B. tubular valve needle 28 arranged at its downstream, the Spray hole 26 facing end 29 with a z.
  • the injection valve is actuated in a known manner Way electromagnetic.
  • a return spring 33 or closing the injection valve serves the electromagnetic circuit with the magnetic coil 1, the core 2, the at least one guide element 5, the guide ring 10 and the anchor 24.
  • the anchor 24 is with the Valve closing body 30 facing away from the end of the valve needle 28 z. B. connected by a weld and on the core 2nd aligned.
  • Guide opening 34 of the valve seat body 25 is used for guiding the valve closing body 30 during the axial movement of the valve needle 28 with the armature 24 along the valve longitudinal axis 16.
  • the armature 24 during the axial movement in the sleeve 18th guided.
  • the spherical valve closing body 30 acts with one tapered in the direction of flow Valve seat surface 35 of the valve seat body 25 together, the in the axial direction downstream of the guide opening 34 is trained.
  • the cup-shaped spray hole disk 26 has in addition to a bottom part 41 on which the Valve seat body 25 is attached and in the at least one, for example four, by eroding or stamping molded spray openings 42 run one circumferential downstream holding edge 43.
  • the Holding edge 43 is bent conically downstream, so that this is determined by the through opening 21 inner wall of the sleeve 18 abuts, with a radial Pressure is present.
  • the Holding edge 43 of the spray plate 26 At its downstream end is the Holding edge 43 of the spray plate 26 with the wall of the Sleeve 18, for example, by a circumferential and dense z. B. connected by a laser generated weld. An immediate flow of the fuel into a Intake pipe of the internal combustion engine outside the Spray openings 42 is through the welds on the Spray plate
  • the insertion depth of the valve seat body 25 with the Spray plate 26 in the sleeve 18 is among other things decisive for the stroke of the valve needle 28.
  • the an end position of the valve needle 28 when not excited Solenoid coil 1 through the contact of the valve closing body 30 on the valve seat surface 35 of the valve seat body 25 fixed while the other end position of the Valve needle 28 with solenoid 1 excited by the system of the armature 24 at the core end 15 results.
  • the Stroke adjustment by moving the axially with little Oversized core 2 in the upper sleeve section 19 of the sleeve 18.
  • the core 2 is in the corresponding desired position subsequently firmly with the sleeve 18th connected, wherein a laser weld on the circumference of the sleeve 18th makes sense.
  • the interference of the press fit can also be chosen large enough so that the occurring Forces can be absorbed and complete Tightness is guaranteed, resulting in a weld can be dispensed with.
  • the injector is completely set and assembled largely surrounded by a plastic jacket 50, which itself starting from the core 2 in the axial direction over the Solenoid coil 1 until the sleeve 18 is terminated downstream extends, to this plastic jacket 50 co-molded electrical connector 51 belongs.
  • About the electrical connector 51 takes place electrical contacting of the magnetic coil 1 and thus its Excitement.
  • it is the Plastic jacket 50 around a tubular plastic part that significantly better known from plastic extrusion Fuel injectors differs.
  • FIG 2 is an outer tubular plastic part 60 with the solenoid assembly shown mainly from the plastic jacket 50 with the Connector 51 is formed.
  • This plastic part 60 consists specifically of the magnetic coil 1, which the windings the magnetic coil 1 carrying coil body 3 made of plastic, the at least one z. B. bow-shaped guide element 5, the Guide ring 10 and this as a solenoid assembly identifiable arrangement in the circumferential direction to the outside completely enclosing plastic jacket 50.
  • the tubular plastic jacket 50 includes the conventional trained connector 51, for example two Has contact pins 52, the electrical excitation of the Serve solenoid 1. These contact pins 52 extend out of the bobbin 3 up to the connector 51.
  • the plastic jacket 50 is shaped so that an axial extending inner through opening 54 is formed.
  • the inner through opening 54 of the plastic part 60 not completely due to the inside diameter of the Plastic jacket 50 set, but also by the Inner diameter of the upper end 6 of the guide element 5, the Inner diameter of the bobbin 3 and the Inner diameter of the guide ring 10.
  • the diameter of the Through opening 54 through the plastic of the Plastic sheath 50 set, the inner diameter of the upstream of the solenoid 1 Opening area 55 is larger than the inside diameter of the downstream of the solenoid 1 opening area 56th
  • the plastic jacket 50 encloses the solenoid assembly not only in the circumferential direction and in the axial direction, but it also extends in the area of at least a guide element 5 between such a guide element 5 and the magnet coil 1 or the coil body 3.
  • the plastic jacket 50 on the through opening 54 executed such that one in the Through opening 54 protruding, z. B. by 360 ° circumferential locking element 58 the cross section of the Through opening 54 slightly reduced.
  • This locking element 58 can in the form of a circumferential nose, an inner bead or an inner collar and an angular or have a rounded contour.
  • the outer contour of the plastic jacket 50 is the adjusted the desired installation conditions, z. B. on an annular groove 59 at the lower end of the plastic jacket 50 is provided, into which a sealing ring 62 ( Figure 1) can be inserted is.
  • valve part 70 comprises mainly the components core 2, fuel filter 40, Adjustment sleeve 39, return spring 33, valve needle 28 with Valve closing body 30, armature 24, sleeve 18 and Valve seat body 25 with spray hole disk 26.
  • the individual Components work together in the manner described above or are in accordance with those previously made with reference to FIG Explanations linked.
  • the thin-walled sleeve 18 (wall thickness z. B. 0.3 mm) for example by deep drawing, where as a non-magnetic material, e.g. B. a rust-proof CrNi steel is used.
  • Sheet metal deep drawn part sleeve 18 serves, as already mentioned, due to their great extent to include the Valve seat body 25, the spray plate 26, the Valve needle 28 with the armature 24, the return spring 33 and at least partially of core 2 and consequently also of Stop area of anchor 24 and core 2 to limit the Stroke.
  • the sleeve 18 has at its upper axial end for example, a slightly radially outward curve Peripheral edge 64.
  • the peripheral edge 64 arises from the Separate the material overflow during deep drawing and serves the Establishing a secure locking connection in the Injector.
  • valve part 70 After adjusting the stroke and assembling the individual components to valve part 70, the complete valve part 70 is in the Through opening 54 of the plastic part 60 from the upper Opening area 55 inserted here.
  • the valve part 70 and the plastic part 60 go when desired accordingly Insertion length a fixed locking connection.
  • Locking element 58 of the plastic part 60 in a between the Circumferential edge 64 of the sleeve 18 and an outer core shoulder 65 formed groove 66 a. It can be an intervention act snapping or clipping.
  • the groove 66 can also at another point on the circumference of the core 2 be trained.
  • the geometries of the locking element 58 or the groove 66 are provided so that an absolute secure, slip-free connection is created. A release the connection without additional tools is no longer possible.
  • This type of assembly has the great advantage that the high required for plastic molding Overmolding pressure (up to 350 bar) does not cause deformation of the thin-walled sleeve 18 can lead because this is only subsequently together with the entire valve part 70 in Plastic part 60 is integrated.

Claims (11)

  1. Injecteur de carburant pour une installation d'injection de carburant d'un moteur à combustion interne, ayant un axe longitudinal comprenant : un noyau tubulaire (2), une bobine électromagnétique, au moins un élément conducteur (5, 10) fermant le circuit électromagnétique, un organe d'obturation de soupape qui fait partie d'une aiguille (28) mobile axialement suivant l'axe longitudinal de l'injecteur et coopérant avec un siège de soupape prévu sur un organe formant siège de soupape, un manchon (18) non magnétique, à paroi mince, s'étendant axialement, et dans lequel l'aiguille se déplace axialement, ce manchon étant relié solidairement au noyau, le noyau et le manchon (18) délimitant ensemble la partie injecteur, vers l'extérieur, et au moins un enrobage injecté de matière plastique qui entoure au moins partiellement l'injecteur,
    caractérisé en ce que
    a) l'injection de matière plastique est réalisée sous la forme d'une enveloppe de matière plastique (50) entourant au moins partiellement la bobine électromagnétique (1) et a.u moins l'élément conducteur (5, 10), cette enveloppe formant ainsi une pièce en matière plastique (60) fabriquée séparément,
    b) la pièce en matière plastique (60) comporte un passage traversant intérieur (54), et
    c) la partie formant injecteur (70) fabriquée séparément, est dans l'orifice traversant (54), reliée solidairement à la pièce en matière plastique (60) par une liaison d'accrochage.
  2. Injecteur de carburant selon revendication 1,
    caractérisé par
    au moins un élément d'accrochage (58) prévu dans l'orifice traversant (54) de la pièce en matière plastique (60).
  3. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    la périphérie de la partie formant injecteur (70) comporte au moins une rainure (66).
  4. Injecteur de carburant selon les revendications 2 ou 3,
    caractérisé par
    l'engagement, l'accrochage ou l'enclipsage d'au moins un élément d'accrochage (58) dans au moins une rainure (66) réalisant la liaison d'accrochage solidaire.
  5. Injecteur de carburant selon les revendications 2 ou 4,
    caractérisé en ce que
    l'élément d'accrochage (58) est un bec d'accrochage périphérique qui vient en saillie dans l'orifice traversant (54).
  6. Injecteur de carburant selon les revendications 2 ou 4,
    caractérisé par
    au moins un élément d'accrochage (58) ayant plusieurs becs d'accrochage répartis à la périphérie de l'orifice traversant (54).
  7. Injecteur de carburant selon les revendications 1 ou 3,
    caractérisé en ce que
    le manchon (18) présente à son extrémité supérieure, un bord périphérique (64) qui délimite partiellement une rainure (66) à la périphérie extérieure de la partie formant injecteur (70).
  8. Injecteur de carburant selon les revendications 1 ou 3,
    caractérisé en ce qu'
    au moins une rainure (66) est prévue à la périphérie du noyau (2).
  9. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    le manchon (18) de la partie formant injecteur (70) est une pièce en tôle réalisée par emboutissage profond.
  10. Procédé de fabrication d'un injecteur de carburant pour une installation d'injection de carburant dans un moteur à combustion interne comprenant un axe longitudinal (16), un noyau tubulaire (2), une bobine électromagnétique (1), au moins un élément conducteur (5, 10) fermant le circuit électromagnétique, un organe d'obturation de soupape (30) qui fait partie d'une aiguille (28) mobile axialement le long de l'axe longitudinal (16) de l'injecteur et coopérant avec un siège de soupape prévu sur un organe (25) formant siège de soupape, un manchon non magnétique (18) à paroi minces, s'étendant axialement, dans lequel se déplace axialement l'aiguille (28), ce manchon étant relié solidairement au noyau (2), le noyau (2) et le manchon (18) délimitant ensemble vers l'extérieur, une partie formant injecteur (70) et un enrobage en matière plastique (50) qui entoure au moins partiellement l'injecteur, selon l'une des revendications 1 à 9, procédé selon lequel dans une étape on réalise la partie d'injecteur (70), séparément,
    caractérisé en ce que
    dans une autre étape du procédé on réalise séparément la pièce en matière plastique (60) avec injection de matière plastique, sous la forme d'une enveloppe en matière plastique (50) comprenant la bobine électromagnétique (1) et au moins un élément conducteur (5,10) entouré au moins partiellement par l'enveloppe en matière plastique (50), cette pièce en matière plastique (60) ayant un orifice traversant intérieur (54) et
    dans une étape de procédé finale on relie la partie formant injecteur (70) à l'orifice traversant (54) par une liaison d'accrochage solidaire avec la pièce en matière plastique (60),
    l'objet ainsi réalisé étant un injecteur de carburant selon l'une des revendications 1 à 9.
  11. Procédé de fabrication d'un injecteur de carburant selon la revendication 10,
    caractérisé en ce que
    la liaison par accrochage est réalisée par l'introduction, l'accrochage ou l'enclipsage de la partie formant injecteur (70) dans la pièce en matière plastique (60).
EP97923728A 1996-08-02 1997-04-08 Soupape d'injection de carburant et son procede de fabrication Expired - Lifetime EP0865574B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19631280A DE19631280A1 (de) 1996-08-02 1996-08-02 Brennstoffeinspritzventil und Verfahren zur Herstellung
DE19631280 1996-08-02
PCT/DE1997/000710 WO1998005861A1 (fr) 1996-08-02 1997-04-08 Soupape d'injection de carburant et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0865574A1 EP0865574A1 (fr) 1998-09-23
EP0865574B1 true EP0865574B1 (fr) 2002-02-20

Family

ID=7801628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97923728A Expired - Lifetime EP0865574B1 (fr) 1996-08-02 1997-04-08 Soupape d'injection de carburant et son procede de fabrication

Country Status (9)

Country Link
US (1) US6012655A (fr)
EP (1) EP0865574B1 (fr)
JP (1) JP3737130B2 (fr)
KR (1) KR100482905B1 (fr)
CN (1) CN1078668C (fr)
DE (2) DE19631280A1 (fr)
ES (1) ES2172788T3 (fr)
RU (1) RU2177074C2 (fr)
WO (1) WO1998005861A1 (fr)

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DE59706434D1 (de) 2002-03-28
JP3737130B2 (ja) 2006-01-18
WO1998005861A1 (fr) 1998-02-12
DE19631280A1 (de) 1998-02-05
EP0865574A1 (fr) 1998-09-23
KR19990063902A (ko) 1999-07-26
CN1078668C (zh) 2002-01-30
ES2172788T3 (es) 2002-10-01
CN1198199A (zh) 1998-11-04
RU2177074C2 (ru) 2001-12-20
JPH11513101A (ja) 1999-11-09
KR100482905B1 (ko) 2005-07-25
US6012655A (en) 2000-01-11

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