EP1327066B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1327066B1
EP1327066B1 EP01986742A EP01986742A EP1327066B1 EP 1327066 B1 EP1327066 B1 EP 1327066B1 EP 01986742 A EP01986742 A EP 01986742A EP 01986742 A EP01986742 A EP 01986742A EP 1327066 B1 EP1327066 B1 EP 1327066B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
valve
threaded rod
injection valve
seat body
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
EP01986742A
Other languages
German (de)
English (en)
Other versions
EP1327066A2 (fr
Inventor
Hubert Stier
Joerg Heyse
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 EP1327066A2 publication Critical patent/EP1327066A2/fr
Application granted granted Critical
Publication of EP1327066B1 publication Critical patent/EP1327066B1/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
    • 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
    • F02M61/1846—Dimensional characteristics of discharge orifices
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • 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
    • 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

Definitions

  • the invention relates to a fuel injection valve according to the preamble of claim 1.
  • Fuel injection valves having a spin-generating element downstream of a sealing seat are e.g. from DE 31 21 572 A1 or JP 59 015 668 A known.
  • a cylindrical component is pressed, which has grooves in the cylinder jacket surface, which connect the two cylinder end sides together.
  • the grooves are spirally arranged and act on the fuel flow with the fuel injection valve open with a twist.
  • the grooves can be adapted in terms of their cross section and their pitch.
  • the metering of the injected fuel is also adjusted via the grooves, which are supplemented by the valve seat body to closed swirl ducts.
  • Another fuel injection valve is known from US 4,520,962. Downstream of a ball valve is a rod, in the surface grooves are introduced.
  • grooves are also arranged spirally to produce a twist and are supplemented by the valve seat body to closed swirl channels. Downstream immediately followed by a cone-shaped extended injection opening.
  • a disadvantage of the said fuel injection valves is the complicated production of the cylindrical swirl insert.
  • the introduction of individual spiral grooves is costly and time consuming.
  • most machining machining technologies are used, which require reworking due to the formation of burrs when introducing the grooves.
  • the fuel injection valve according to the invention according to the characterizing feature of claim 1 has the advantage that an inexpensive component for generating a swirl flow can be used by the formation of swirl ducts through the threads of a threaded rod.
  • the swirl insert can be cut to length by long threaded rods with the required number of threads.
  • the center axis of the bore for receiving the swirl insert against the central axis of the fuel injection valve may include a non-zero angle.
  • the homogenization of the swirl in the fuel flow can be influenced and thus a change of the spray pattern can be achieved.
  • the reduction in the flow cross-section towards the ejection opening causes an increase in the twist.
  • the fuel injection valve 1 is embodied in the form of a fuel injection valve 1 for fuel injection systems of mixture-compression spark-ignition internal combustion engines.
  • the fuel injection valve 1 is suitable in particular for the direct injection of fuel into a combustion chamber, not shown, of an internal combustion engine.
  • the fuel injection valve 1 consists of a nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is in operative connection with a valve closing body 4, which cooperates with a arranged on a valve seat body 5 valve seat surface 6 to a sealing seat.
  • this is an electromagnetically actuated fuel injection valve 1, which has an ejection opening 7.
  • the nozzle body 2 is sealed by a seal 8 against the outer pole 9 of a magnetic coil 10.
  • the magnetic coil 10 is encapsulated in a coil housing 11 and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10.
  • the inner pole 13 and the outer pole 9 are separated by a gap 26 and are based on a connecting member 29 from.
  • the magnetic coil 10 is energized via a line 19 from a via an electrical plug contact 17 can be supplied with electric current.
  • the plug contact 17 is surrounded by a plastic casing 18, which may be molded on the inner pole 13.
  • valve needle 3 is guided in a valve needle guide 14, which is designed disk-shaped.
  • armature 20 On the other side of the dial 15 there is an armature 20. This is connected via a flange 21 non-positively with the valve needle 3 in connection, which is connected for example via a weld 22 to the flange 21.
  • a return spring 23 On the flange 21, a return spring 23 is supported, which is brought in the present design of the fuel injection valve 1 by a sleeve 24 to bias.
  • valve needle guide 14 and in the armature 20 run fuel channels 30a, 30b.
  • the fuel is supplied via a central fuel supply 16 and filtered by a filter element 25.
  • fuel passages 30 c which extend between the valve closing body 4 and the valve seat body 5 along flats 32 on the valve closing body 4, the fuel is conducted to the sealing seat.
  • the fuel injection valve 1 is sealed by a seal 28 against a manifold, not shown.
  • the armature 20 In the idle state of the fuel injection valve 1, the armature 20 is acted upon via the flange 21 on the valve needle 3 of the return spring 23 counter to its stroke direction so that the valve closing body 4 is held on the valve seat 6 in sealing engagement and the valve closing body 4 in its downstream hubbeskynden end position located. Upon excitation of the magnetic coil 10, this builds up a magnetic field, which moves the armature 20 against the spring force of the return spring 23 in the stroke direction. The armature 20 takes the flange 21, which is welded to the valve needle 3, and thus the valve needle 3 also in the stroke direction. The valve closing body 4 in operative connection with the valve needle 3 lifts off from the valve seat surface 6 and the fuel reaching the valve sealing seat flows through swirl channels 33 into a swirl chamber 34, from there to the spray opening 7 and is sprayed off.
  • the armature 20 falls after sufficient degradation of the magnetic field by the pressure of the return spring. 23 on the flange 21 from the inner pole 13, whereby the valve needle 3 moves against the stroke direction. As a result, the valve closing body 4 is seated on the valve seat surface 6, and the fuel injection valve 1 is closed.
  • an inventive fuel injection valve 1 Downstream of the sealing seat, a bore 35 is introduced into the valve seat body 5, in which a threaded rod 36 is pressed, downstream of which a cone-shaped taper 37 connects to the bore 35, which opens into the spray opening 7.
  • the center axis 38 of the introduced into the valve seat body 5 bore 35 is preferably inclined relative to the central axis 39 of the fuel injection valve 1 to a non-zero angle.
  • the diameter of the Bore 35 corresponds to the outer diameter of the threaded rod 36 to be pressed.
  • the threads of the threaded rod 36 are closed by the bore 35 of the valve seat body 5 to swirl channels 33. It runs at least two complete threads in the bore 35.
  • the use of threaded rods 36 of different pitches allows changing the swirl generation at the same outer diameter of the threaded rod 36 and thus increases the proportion identical to manufacturing components in the manufacture of the fuel injection valve 1.
  • the threaded rod 36 is of Upstream side into the valve seat body 5 is pressed until its downstream end face 40 b is in contact with the conical taper 37.
  • the cone-shaped taper 37 forms, bounded upstream of the downstream end face 40 b of the threaded rod 36, a swirl chamber 34 and opens downstream into the spray opening 7.
  • the swirl chamber 34 is connected through the swirl channels 33 with a cavity formed upstream of the threaded rod 36. With the fuel injector 1 open, fuel enters the swirl chamber 34, where the swirl is evened out and amplified by the narrowing of the cross-section.
  • a second embodiment of a fuel injection valve 1 according to the invention is shown.
  • the threaded rod 36 is pressed from the downstream side into the valve seat body 5.
  • the ejection opening 7 is arranged in a spray perforated disk 42, which is e.g. is fixed to the downstream side of the valve seat body 5 by welding.
  • the valve seat body 5, downstream of the sealing seat has an overflow bore 43, the diameter of which is smaller than the core diameter of the threaded rod 36 to be pressed in, and whose central axis is preferably connected to the Central axis 38 of a downstream adjoining bore 35 is identical and includes a non-zero angle with the central axis 39 of the fuel injection valve 1.
  • the diameter of the bore 35 corresponds to the outer diameter of the threaded rod 36 to be pressed in.
  • the downstream end of the bore 35 exits the valve seat body 5 on the downstream side.
  • the downstream side of the valve seat body 5 has in the region of the bore 35 has a preferably flat surface 44, the surface normal with the central axis of the bore 35 is identical.
  • the spray perforated disk 42 is attached to the valve seat body 5 e.g. attached by welding.
  • the upstream side 41 of the spray perforated disk 42 which is in contact with the surface 44 of the valve seat body 5 has a shape corresponding to the valve seat body 5.
  • the ejection opening 7 is introduced so that the central axis of the ejection opening 7 is identical to the central axis 38 of the bore 35 in order to achieve a symmetrical Abspritzsent.
  • the diameter of the ejection opening 7 is smaller than the diameter of the bore 35 and preferably also smaller than the core diameter of the threaded rod 36.
  • the spray perforated disk 42 can be inexpensively e.g. be produced as a stamped part.
  • the pressed-in threaded rod 36 is shorter than the bore 35. Between the upstream end face 40 a of the threaded rod 36 and the upstream end of the bore 35, a cavity 45 is formed whose height by the distance of the upstream end face 40 a of the threaded rod and the upstream end of the bore 35th is determined.
  • the adjustment of the metered amount of the fuel can on the press-in depth of the threaded rod 36th be made whose position determines the height H of the cavity 45.
  • the swirl chamber 34 Downstream of the threaded rod 36, the swirl chamber 34 is arranged, which is formed between the downstream end face 40 b of the threaded rod 36 and the upstream side 41 of the spray perforated disk 42.
  • the swirl formed in the fuel flow is uniformed in the swirl chamber 34 before the fuel flows through the spray opening 7 and is sprayed into the combustion chamber, not shown, of an internal combustion engine.
  • the center axes of the bores 35, 43 and the spray orifice 7 may be different from each other in terms of position and angle.
  • the preparation of the twist of the fuel flow can be realized by the use of threaded rods 36 whose threads differ in terms of the ratio of core and outer diameter and / or pitch. Likewise, the influence of different lengths of the threaded rods 36 and the associated different number of swirl-forming threads can be used.

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

Claims (10)

  1. Injecteur de carburant (1) pour systèmes d'injection de carburant de moteurs à combustion interne, comprenant un corps de fermeture de soupape (4) en liaison active avec une aiguille de soupape (3) et coopérant avec une surface de siège de soupape (6) d'un corps de siège de soupape (5) pour former un siège d'étanchéité, et un élément générateur de turbulences en aval du siège d'étanchéité dans le corps de siège de soupape (5), et une ouverture d'injection (7), l'élément générateur de turbulences étant une tige filetée (36),
    caractérisé en ce que
    la tige filetée (36) est fabriquée sans copeaux par roulage et la longueur de la tige filetée (36) enfoncée comprend au moins deux pas de filet complets de sorte que dans la direction axiale, plusieurs pas de filet assurent l'étanchéité par rapport au corps de siège de soupape.
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'axe central (38) de la tige filetée (36) fait avec l'axe central (39) de l'injecteur de carburant (1) un angle différent de zéro.
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce qu'
    une chambre de turbulence (34) délimitée dans la direction axiale par la face frontale (40b) aval de la tige filetée (36) et par le corps de siège de soupape (5) est raccordée en aval de la tige filetée (36).
  4. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce qu'
    une chambre de turbulence (34) délimitée dans la direction axiale par la face frontale (40b) aval de la tige filetée (36) et par la face (47) d'une pastille perforée (42) est raccordée en aval de la tige filetée (36).
  5. Injecteur de carburant selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    l'extension radiale de l'ouverture d'injection (7) est inférieure au diamètre extérieur de la tige filetée (36).
  6. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    l'ouverture d'injection (7) est aménagée dans la pastille perforée (42).
  7. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    la tige filetée (36) peut être enfoncée dans un alésage (35) du corps de siège de soupape (5) depuis le côté amont du corps de siège de soupape (5).
  8. Injecteur de carburant selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    la tige filetée (36) peut être enfoncée dans un alésage (35) du corps de siège de soupape (5) depuis le côté aval du corps de siège de soupape (5).
  9. Injecteur de carburant selon la revendication 8,
    caractérisé en ce qu'
    un espace creux (45) dont la section transversale d'écoulement la plus étroite définit le dosage de la quantité de carburant à injecter est formé en aval d'un alésage de trop-plein (43), dont le diamètre est inférieur au diamètre de noyau de la tige filetée (36), entre la face frontale (40a) aval de la tige filetée (36) et le corps de siège de soupape (5).
  10. Injecteur de carburant selon la revendication 9,
    caractérisé en ce que
    la section transversale d'écoulement la plus étroite de l'espace creux est définie par la surface F d'une enveloppe du cylindre à F=H*2Rπ, H étant la distance axiale entre la face frontale amont (40a) et l'extrémité amont de l'alésage (35), et R le rayon de l'alésage de trop-plein (43).
EP01986742A 2000-10-10 2001-10-10 Soupape d'injection de carburant Expired - Lifetime EP1327066B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10050055A DE10050055A1 (de) 2000-10-10 2000-10-10 Brennstoffeinspritzventil
DE10050055 2000-10-10
PCT/DE2001/003846 WO2002031343A2 (fr) 2000-10-10 2001-10-10 Soupape d"injection de carburant

Publications (2)

Publication Number Publication Date
EP1327066A2 EP1327066A2 (fr) 2003-07-16
EP1327066B1 true EP1327066B1 (fr) 2006-06-28

Family

ID=7659217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01986742A Expired - Lifetime EP1327066B1 (fr) 2000-10-10 2001-10-10 Soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6851629B2 (fr)
EP (1) EP1327066B1 (fr)
JP (1) JP2004511699A (fr)
DE (2) DE10050055A1 (fr)
RU (1) RU2002117416A (fr)
WO (1) WO2002031343A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4528701B2 (ja) * 2005-09-13 2010-08-18 日立オートモティブシステムズ株式会社 噴射弁及びオリフィスの加工方法
US8225602B2 (en) * 2009-06-11 2012-07-24 Stanadyne Corporation Integrated pump and injector for exhaust after treatment
US20100314470A1 (en) * 2009-06-11 2010-12-16 Stanadyne Corporation Injector having swirl structure downstream of valve seat
CN102913310A (zh) * 2011-08-05 2013-02-06 广西玉柴机器股份有限公司 一种提高氮氧化物转化率的scr后处理喷嘴
JP5811979B2 (ja) * 2012-09-24 2015-11-11 株式会社デンソー 燃料噴射弁
CN109550607A (zh) * 2019-01-30 2019-04-02 钱滋勒贸易(上海)有限公司 一种低压喷嘴
US20220056874A1 (en) * 2020-08-19 2022-02-24 Cummins Inc. Fuel injector having nozzle spray holes with grooves
CN115523313B (zh) * 2022-09-06 2023-08-25 泗洪智工精密机械有限公司 一种电控喷油器的燃油控制阀

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186883A (en) * 1978-05-08 1980-02-05 Essex Group, Inc. Electromagnetic fuel injection valve with swirl means
US4487369A (en) * 1982-01-11 1984-12-11 Essex Group, Inc. Electromagnetic fuel injector with improved discharge structure
JPH11267955A (ja) * 1998-11-02 1999-10-05 Denso Corp 流体噴射弁のニードルの研削方法

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
GB137134A (en) * 1919-01-29 1920-01-08 Tom Latham Improvements in spray valves for diesel engines
US2981483A (en) * 1960-02-26 1961-04-25 Nord Aviation Injector having a high flow rate ratio
FR1358593A (fr) * 1963-03-07 1964-04-17 Tecalemit Injecteur perfectionné pour l'alimentation des moteurs à combustion interne
JPS57126554A (en) 1981-01-30 1982-08-06 Hitachi Ltd Electro magnetic fuel jet valve
DE3121572A1 (de) 1981-05-30 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart "einspritzventil"
JPS5915668A (ja) * 1982-07-19 1984-01-26 Hitachi Ltd 電磁気燃料噴射弁
SU1359463A1 (ru) * 1986-05-20 1987-12-15 Запорожский индустриальный институт Карбюратор дл двигател внутреннего сгорани
DE4200709A1 (de) * 1992-01-14 1993-07-15 Bosch Gmbh Robert Kraftstoffeinspritzduese fuer brennkraftmaschinen
US5484108A (en) * 1994-03-31 1996-01-16 Siemens Automotive L.P. Fuel injector having novel multiple orifice disk members
US6330981B1 (en) * 1999-03-01 2001-12-18 Siemens Automotive Corporation Fuel injector with turbulence generator for fuel orifice

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186883A (en) * 1978-05-08 1980-02-05 Essex Group, Inc. Electromagnetic fuel injection valve with swirl means
US4487369A (en) * 1982-01-11 1984-12-11 Essex Group, Inc. Electromagnetic fuel injector with improved discharge structure
JPH11267955A (ja) * 1998-11-02 1999-10-05 Denso Corp 流体噴射弁のニードルの研削方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31) *

Also Published As

Publication number Publication date
JP2004511699A (ja) 2004-04-15
DE50110357D1 (de) 2006-08-10
US20030111562A1 (en) 2003-06-19
RU2002117416A (ru) 2004-04-10
US6851629B2 (en) 2005-02-08
WO2002031343A2 (fr) 2002-04-18
DE10050055A1 (de) 2002-04-18
WO2002031343A3 (fr) 2002-07-18
EP1327066A2 (fr) 2003-07-16

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