EP1332284B1 - Brennstoffeinspritzventil - Google Patents
Brennstoffeinspritzventil Download PDFInfo
- Publication number
- EP1332284B1 EP1332284B1 EP01993762A EP01993762A EP1332284B1 EP 1332284 B1 EP1332284 B1 EP 1332284B1 EP 01993762 A EP01993762 A EP 01993762A EP 01993762 A EP01993762 A EP 01993762A EP 1332284 B1 EP1332284 B1 EP 1332284B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- spray
- fuel injection
- injection valve
- valve according
- 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
Links
- 239000000446 fuel Substances 0.000 title claims description 47
- 238000002347 injection Methods 0.000 title claims description 21
- 239000007924 injection Substances 0.000 title claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 20
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 2
- 210000002105 tongue Anatomy 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 238000005485 electric heating Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 description 54
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1853—Orifice plates
- F02M61/186—Multi-layered 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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
-
- 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
- F02M61/166—Selection of particular materials
-
- 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
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7879—Resilient material valve
- Y10T137/7888—With valve member flexing about securement
- Y10T137/7891—Flap or reed
Definitions
- the invention is based on a fuel injector according to the preamble of claim 1.
- DE 32 28 079 A1 describes a fuel injector known to control several spray orifices separately can.
- the fuel injector has two valve needles on, each by a spring against one A prestressing force is applied to the sealing seat. Becomes the one valve needle by a certain advance stroke from her Sealing seat raised, it hits a stop of the other valve needle and takes it on further stroke Valve needle with.
- the two sealing seats of the two Valve needles close different ones Spray orifices at different angles can be aligned.
- the structure is multi-part, and two sealing seats have to be manufactured precisely, which creates high costs.
- Another disadvantage is that only two groups of spray orifices are separated can be controlled and no further selection opening spray openings is possible.
- valve needle acts as on its combustion chamber side Valve closing body trained section with a Valve seat surface together to form a sealing seat, the Separates spray openings from a fuel feed.
- valve needle guided auxiliary also has one Valve closing body with a second Valve seat surface of the fuel injector interacts.
- the fuel injector according to the invention with the Features of claim 1 on the other hand the advantage of an inexpensive and production-technically well implementable solution for the Control to open spray ports to offer, because the No more spray openings for their separate opening require precise sealing seat, but the Spray orifices assigned to a valve section can be opened independently if that respective heating element of the valve section separately from the Valve closing body is controlled. A maximum of everyone can Spray orifices can be selected separately if all Spray openings are each assigned a valve section and the respective heating elements separated from each other are controllable. As soon as the valve closing body opens, only do not spray from their valve sections covered fuel discharge openings.
- the distribution of the fuel in the Jet pattern of the fuel injector through the selection the spray openings are advantageously influenced.
- valve section of the Disc element made of bimetal and the layering of the bimetal so that the valve sections of the disk element, the spray openings when heated cover.
- the heating elements can advantageously be placed on the Valve sections attached electrical heating wires consist.
- Valve sections are selected and opened individually, if there is a separate control line for each of the heating wires is provided.
- valve seat body or the Spray orifice plate from a second bolt circle Spray openings on, radially outside to the first bolt circle located, and are the spray openings of the second Bolt circle correspondingly shaped valve sections of the Assigned disc element.
- the spray openings can advantageously be different Spray angle, opening diameter and axial lengths exhibit.
- Fig. 1 shows a section in a cut Representation of the section of an inventive Fuel injector, the not shown here Combustion chamber facing an internal combustion engine.
- a valve body 1 is, for. B. with a weld 3 an orifice plate 2, the orifices 4 has, connected and forms together with this one Valve seat body 5.
- a valve needle 6 has at its End not shown combustion chamber facing one Valve closing body 7.
- the valve closing body 7 acts with a provided in the valve body 1 z.
- B. frustoconical valve seat surface 8 to a sealing seat 9 together.
- a disc element 10 is on the Spray port plate 2 is arranged and is on the Spray port plate 2 held by the valve body 1.
- the disk element 10 has radially inwardly projecting Valve sections 11, which in a bolt circle 19th arranged outer spray openings 12 at normal Cover operating temperature. On the valve sections 11 heating elements 13 are arranged.
- valve sections 11 are designed as tongues 17 pointing radially towards the center.
- the disk element 10 is off Bimetal formed, the stratification is shaped so that at low temperature the valve sections 11 the outer Spray openings 12 cover when the heating elements 13 do not additionally heat the valve sections 11.
- Fig. 1 shows the fuel injector in the closed Status.
- the heating elements 13 are not controlled, and the Valve sections 11 of the disk element 10 have the normal operating temperature or lower.
- the bimetal will be the valve sections 11 on the circularly arranged outer spray openings 12 pressed and close them. If now the valve needle 6 is lifted out of the sealing seat 9, the fuel only from the uncovered spray openings 4 z. B. an inner bolt circle 18 emerge. This alone Spray openings 4 determine the spray pattern of the Fuel.
- valve body 1 is over the weld 3 with the Spray port plate 2 containing spray ports 4 connected and forms one with it Valve seat body 5.
- the valve needle 6 is with the Valve closing body 7 formed in one piece.
- the Valve closing body 7 interacts with that in valve body 1 molded valve seat surface 8 to form a sealing seat 9 together.
- the disc element 10 is on the Spray port plate 2 is arranged and is on the Spray port plate 2 held by the valve body 1.
- the valve sections 11 with the associated heating elements 13 are over the outer circle forming the second bolt circle 19 Spray openings 12 arranged.
- the fuel injector is in the closed state shown.
- the heating elements 13 heat the Valve sections 11 additionally. This causes them to bend Valve sections 11 from the associated outer Spray openings 12 away and release them. If so Valve needle 6 is lifted out of the sealing seat 9, the Fuel from all uncovered spray openings 4, 12 exit. Shown are two valve sections 11 which release their respective outer spray opening 12.
- the Number of spray openings 12 that can be released separately depends on therefore solely from the possibility of heating elements 13 to be controlled separately. It is advantageous in the period by closing the fuel injector, the Number of spray openings to be opened 12 by actuation the associated heating elements 13 selected. Opening the Fuel injector is then carried out by the Valve needle 6 just as precisely and quickly as with one Fuel injection valve according to the prior art.
- Fig. 3 shows the section plane III-III of Fig. 1.
- spray ports 4 arranged in the Spray port plate 2
- the valve sections 11 cover the outer Spray openings 12.
- the Heating elements 13 On the valve sections 11 are the Heating elements 13 arranged.
- the heating elements 13 are z. B. formed as heating wires that have a common Lead 14 are connected.
- the heating elements 13 can in the present embodiment of the invention for the outside Bolt circle 19 are operated together.
- Fig. 4 shows the detail IV of Fig. 2.
- spray port 4 arranged, which is an outer spray opening 12.
- the Valve section 11 is heated by the heating element 13 and is therefore lifted off the outer spray opening 12.
- the disk element 10 and the valve section 11 fixing Valve body 1 can still be seen with its edge.
- the one out Bimetal valve section 11 has an upper Layer 15 of lower thermal expansion and a lower one Layer 16 of higher thermal expansion.
- the Flow direction of the fuel if that Fuel injector is opened by arrows indicated.
- valve section 11 can also be in a Shape memory alloy executed are, especially one that a so-called Two-way behavior shows. This is the deformation depending on the temperature increase and reversible at Temperature reduction.
- the angle of a Fuel injection cone can be affected overall.
- the embodiment according to the invention advantageously enables a Fuel injector a high switching frequency.
- the inventive design is also inexpensive realize.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- einen Ausschnitt aus einem Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils mit geschlossener Ventilnadel und überdeckten Abspritzöffnungen in einer geschnittenen Darstellung,
- Fig. 2
- den gleichen Ausschnitt wie Fig. 1 mit freigegebenen Abspritzöffnungen,
- Fig. 3
- die Schnittebene III-III in Fig. 1 in Aufsicht, und
- Fig. 4
- den Detailausschnitt IV aus der Fig. 2.
Claims (13)
- Brennstoffeinspritzventil, insbesondere Einspritzventil für Brennstoffeinspritzanlagen von Brennkraftmaschinen, mit einem Ventilschließkörper (7), der mit einer Ventilsitzfläche (8) in einem Ventilsitzkörper (5) zu einem Dichtsitz (9) zusammenwirkt, wobei stromabwärts des Dichtsitzes (9) mehrere Abspritzöffnungen (4, 12) angeordnet sind, die gegenüber einem Brennstoffzulauf durch den Dichtsitz (9) abgedichtet sind,
dadurch gekennzeichnet, daß stromabwärts des Dichtsitzes (9) ein Scheibenelement (10) angeordnet ist, wobei das Scheibenelement (10) zumindest einen Ventilabschnitt (11) hat, der bei einer Temperaturänderung seine Form ändert, der Ventilabschnitt (11) mit einem Heizelement (13) verbunden ist und der Ventilabschnitt (11) eine Abspritzöffnung (12) überdecken kann. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß zumindest der Ventilabschnitt (11) des Scheibenelements (10) aus Bimetall besteht. - Brennstoffeinspritzventil nach Anspruch 2,
dadurch gekennzeichnet, daß durch die Schichtung des Bimetalls die Ventilabschnitte (11) des Scheibenelements (10) bei Erwärmung die Abspritzöffnungen (12) freigeben. - Brennstoffeinspritzventil nach Anspruch 2,
dadurch gekennzeichnet, daß durch die Schichtung des Bimetalls die Ventilabschnitte (11) des Scheibenelements (10) die Abspritzöffnungen (12) bei Erwärmung überdecken. - Brennstoffeinspritzventil nach Anspruch 1,
dadurch gekennzeichnet, daß zumindest der Ventilabschnitt (11) des Scheibenelements (10) aus einer Formgedächtnislegierung, in englischer sprache Shape memory alloy, besteht. - Brennstoffeinspritzventil nach Anspruch 5,
dadurch gekennzeichnet, daß die Formgedächtnislegierung einen Zweiwegeffekt aufweist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß die Heizelemente (13) aus auf den Ventilabschnitten (11) angebrachten elektrischen Heizdrähten bestehen. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, daß die Ventilabschnitte (11) als radial nach innen ausgerichtete Zungen (17) des Scheibenelements (10) ausgebildet sind und ein Teil der Abspritzöffnungen (12) in einem äußeren Lochkreis (19) den Ventilabschnitten (11) des Scheibenelements (10) zugeordnet ist. - Brennstoffeinspritzventil nach Anspruch 8,
dadurch gekennzeichnet, daß die Abspritzöffnungen (4, 12) in einem inneren Lochkreis (18) und einem äußeren Lochkreis (19) am Ventilsitzkörper (5) bzw. an einer Abspritzöffnungsplatte (2) angeordnet sind. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß die Abspritzöffnungen (4,12) unterschiedliche Abspritzwinkel aufweisen. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, daß die Abspritzöffnungen (4,12) unterschiedliche Öffnungsdurchmesser und/oder unterschiedliche axiale Längen aufweisen. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, daß der Ventilschließkörper (7) über eine Ventilnadel (6) mittels eines elektromagnetischen oder piezoelektrischen Aktors betätigbar ist. - Brennstoffeinspritzventil nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß die Abspritzöffnungen (4,12) in einer Abspritzöffnungsplatte (2) eingebracht sind, die fest mit einem den Dichtsitz (9) aufweisenden Ventilkörper (1) verbunden ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10056039 | 2000-11-11 | ||
| DE10056039A DE10056039A1 (de) | 2000-11-11 | 2000-11-11 | Brennstoffeinspritzventil |
| PCT/DE2001/004208 WO2002038947A1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzventil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1332284A1 EP1332284A1 (de) | 2003-08-06 |
| EP1332284B1 true EP1332284B1 (de) | 2004-06-16 |
Family
ID=7663020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01993762A Expired - Lifetime EP1332284B1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzventil |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6814309B2 (de) |
| EP (1) | EP1332284B1 (de) |
| JP (1) | JP2004513296A (de) |
| KR (1) | KR20020063002A (de) |
| DE (2) | DE10056039A1 (de) |
| WO (1) | WO2002038947A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10124745A1 (de) * | 2001-05-21 | 2003-03-27 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
| US20040188550A1 (en) * | 2003-03-25 | 2004-09-30 | Hitachi Unisia Automotive, Ltd. | Fuel injection valve |
| JP2005090233A (ja) * | 2003-09-12 | 2005-04-07 | Hitachi Unisia Automotive Ltd | 燃料噴射弁 |
| FR2869573B1 (fr) * | 2004-04-30 | 2006-06-16 | Conception Et Dev Michelin Sa | Vehicule a carburant gazeux et systeme de purge automatique |
| GB0421387D0 (en) * | 2004-09-25 | 2004-10-27 | Scion Sprays Ltd | Pulsed electrostatic atomiser |
| JP2006152812A (ja) * | 2004-11-25 | 2006-06-15 | Denso Corp | 燃料噴射弁およびその製造方法 |
| JP2006183657A (ja) * | 2004-12-02 | 2006-07-13 | Nissan Motor Co Ltd | インジェクタ |
| DE102006025332A1 (de) * | 2006-05-31 | 2007-12-06 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Reinigung von Ventilen |
| JP2007332804A (ja) * | 2006-06-12 | 2007-12-27 | Nissan Motor Co Ltd | 内燃機関の燃料噴射システムおよび内燃機関の燃料噴射方法 |
| US7669789B2 (en) * | 2007-08-29 | 2010-03-02 | Visteon Global Technologies, Inc. | Low pressure fuel injector nozzle |
| US9878226B2 (en) * | 2014-08-18 | 2018-01-30 | Douglas Nardini | Cleaning device |
| US10639527B2 (en) | 2014-08-18 | 2020-05-05 | Douglas Nardini | Cleaning device |
| EP3587791B1 (de) | 2018-06-21 | 2021-03-24 | Claverham Limited | Durchflussregeldüse |
| KR102614976B1 (ko) | 2021-12-30 | 2023-12-19 | 주식회사 현대케피코 | 분무각과 분무유량조절이 가능한 인젝터 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3048304A1 (de) | 1980-12-20 | 1982-07-29 | Robert Bosch Gmbh, 7000 Stuttgart | "kraftstoffeinspritzduese fuer brennkraftmaschinen" |
| DE3120044A1 (de) | 1981-05-20 | 1982-12-09 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
| DE3228079A1 (de) | 1982-07-28 | 1984-02-02 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoff-einspritzduese fuer brennkraftmaschinen |
| US5140965A (en) * | 1990-04-17 | 1992-08-25 | Hitachi, Ltd. | System for and method of supplying fuel to internal combustion engine |
| US5570841A (en) * | 1994-10-07 | 1996-11-05 | Siemens Automotive Corporation | Multiple disk swirl atomizer for fuel injector |
| US5619177A (en) * | 1995-01-27 | 1997-04-08 | Mjb Company | Shape memory alloy microactuator having an electrostatic force and heating means |
| JPH1172067A (ja) * | 1997-06-24 | 1999-03-16 | Toyota Motor Corp | 内燃機関の燃料噴射弁 |
| JP3164023B2 (ja) * | 1997-06-25 | 2001-05-08 | トヨタ自動車株式会社 | 内燃機関の燃料噴射弁 |
| US6019113A (en) * | 1998-10-26 | 2000-02-01 | General Motors Corporation | Method and apparatus for controlling a shape memory alloy fuel injector |
| US6318641B1 (en) * | 2000-02-11 | 2001-11-20 | Delphi Technologies, Inc. | Shape memory alloy fuel injector small package integral design |
-
2000
- 2000-11-11 DE DE10056039A patent/DE10056039A1/de not_active Withdrawn
-
2001
- 2001-11-12 EP EP01993762A patent/EP1332284B1/de not_active Expired - Lifetime
- 2001-11-12 KR KR1020027008894A patent/KR20020063002A/ko not_active Withdrawn
- 2001-11-12 DE DE50102633T patent/DE50102633D1/de not_active Expired - Fee Related
- 2001-11-12 US US10/169,962 patent/US6814309B2/en not_active Expired - Fee Related
- 2001-11-12 JP JP2002541244A patent/JP2004513296A/ja active Pending
- 2001-11-12 WO PCT/DE2001/004208 patent/WO2002038947A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US20030127543A1 (en) | 2003-07-10 |
| JP2004513296A (ja) | 2004-04-30 |
| KR20020063002A (ko) | 2002-07-31 |
| EP1332284A1 (de) | 2003-08-06 |
| DE10056039A1 (de) | 2002-05-16 |
| WO2002038947A1 (de) | 2002-05-16 |
| US6814309B2 (en) | 2004-11-09 |
| DE50102633D1 (de) | 2004-07-22 |
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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 |
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