EP1651855B1 - Dispositif d'injection de carburant - Google Patents

Dispositif d'injection de carburant Download PDF

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Publication number
EP1651855B1
EP1651855B1 EP04738649A EP04738649A EP1651855B1 EP 1651855 B1 EP1651855 B1 EP 1651855B1 EP 04738649 A EP04738649 A EP 04738649A EP 04738649 A EP04738649 A EP 04738649A EP 1651855 B1 EP1651855 B1 EP 1651855B1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
piston
actuator
chamber
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
EP04738649A
Other languages
German (de)
English (en)
Other versions
EP1651855A1 (fr
Inventor
Friedrich Boecking
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 EP1651855A1 publication Critical patent/EP1651855A1/fr
Application granted granted Critical
Publication of EP1651855B1 publication Critical patent/EP1651855B1/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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0043—Two-way valves

Definitions

  • the invention relates to a fuel injection device according to the preamble of patent claim 1.
  • Such a fuel injection device is, for example, by the DE 100 44 120 A known.
  • the aforementioned DE 100 44 120 A discloses a fuel injector including an injector, a high pressure fuel injecting line to the injector under high pressure, and a pilot valve controlling the pressure in a control chamber of the injector connected to the high pressure line, the movable valve member of which is actuatable by an actuator via a hydraulic coupler having two a piston of the coupler having cooperating pistons, wherein the seat of the movable valve member having a clear cross-sectional area f3, wherein the pistons are arranged parallel to each other, wherein the outer piston is mechanically coupled with a piston surface f4 to the actuator via a rod with a cross-sectional area f5 , and wherein the inner piston, which has a piston surface f2, actuates the control valve via a rod with a smaller cross-sectional area f1 than f2.
  • the associated hydraulic chambers are connected via a compensation chamber to the leakage line, ie at low pressure. Low pressure acts on the inner piston in the second hydraulic chamber and high
  • a control valve is known in which the direction of closing movement of a movable valve member coincides with the direction of fuel flowing out of a control chamber, so that the control valve is at least partially force balanced because of the high pressure on the second piston.
  • the fuel injection device according to the invention for internal combustion engines with the characterizing features of claim 1 has the opposite advantage that a CR injector is provided with piezoelectric actuator, in which a large valve cross-section is possible. As a result, the opening and closing of the injection valve can be done faster.
  • the integrated coupler allows a short overall length of the device. The coupler is supported by CR printing.
  • FIG. 1 An embodiment of the fuel injection device according to the invention is shown in the drawing and will be explained in more detail in the following description. It shows the single figure the essential components of a fuel injection device according to the invention with an injection valve and a control valve and a hydraulic coupler.
  • the fuel injection device 1 is supplied from a pressure accumulator (common rail) 3 with fuel at high pressure via a high-pressure line 5, from which fuel passes via an injection line 6 to an injection valve 9.
  • An internal combustion engine normally has a plurality of such injectors, and for the sake of simplicity only one is shown.
  • the injection valve 9 has a valve needle (valve piston, nozzle needle) 11, which closes with a conical valve sealing surface 12 in its closed position injection openings 13, is to be injected through the fuel into the interior of a combustion chamber of the internal combustion engine.
  • the fuel enters the area of the nozzle needle via an annular nozzle chamber 14, from which it allows to exert a pressure in the opening direction of the nozzle needle via a control surface 15 formed as a pressure shoulder. When said pressure exerts a force in the opening direction on the valve needle, which overcomes this opening counteracting forces, so the valve opens.
  • An actuator 31 serves to control the opening and closing of the injection openings. It generates a deflection and a force for actuating further elements as a function of an activation at a mechanical output.
  • it is an electrically actuated actuator.
  • it is an actuator which has a piezoelectric element, namely a piezoelectric actuator.
  • the actuator assumes a lengthy configuration or a shortened configuration depending on an electrical drive in the vertical direction of the drawing and thus in its longitudinal direction.
  • an actuator is provided with such a construction, which assumes a patentede configuration when energized (connected to a DC power supply), without energization occupies a shortened configuration.
  • the actuator forms a capacitive load and absorbs no power loss during continuous power.
  • the piezoelectric actuator by a clamping device, for. As spring so pretension that contained in the actuator piezoelectric elements are always subjected to pressure. This is known to those skilled in the art and therefore will not be referred to hereinafter. While the upper end of the piezoelectric actuator is anchored in the injection device in a manner not visible in the drawing, the lower end of the piezoelectric actuator is used to ultimately use its force and movement to open and close the injection ports.
  • a hydraulic coupler 38 is provided for its coupling, which has a piston 39 coupled to the piezoelectric actuator and a further piston 40. In the present application is generally by the coupler, an enlargement of the path of the further piston 40 in comparison to the path of the piston 39 (by appropriate choice of the hydraulically effective piston surfaces) necessary. The construction and operation of the hydraulic coupler will be described below.
  • the sink If the not directly connected to the piezoelectric actuator piston 40 of the hydraulic coupler opens a control valve 41 (or exhaust valve), the sinks Pressure in a fuel-filled control chamber 43, in which engages the upper end portion of the nozzle needle.
  • the control chamber 43 is filled with fuel under pressure via an inlet throttle 47, and when the control valve 41 is open, fuel flows out of the control chamber 43 via an outlet throttle 49.
  • the outflow of fuel is assisted by forces that tend to move the nozzle needle 11 to its open position.
  • a movable valve piece 51 sealingly abuts a valve seat 53 when the control valve 41 is closed and is mechanically coupled to the piston 40.
  • the outflowing with the valve piece 51 open from the control chamber control amount is discharged through a leakage channel 55.
  • the pistons 39 and 40 are in the example parallel to each other and into each other, manufacturing technology advantageous coaxial with each other (integrated coupler). The way in which they are coupled together is explained below.
  • an arrow is shown, which indicates the movement of this piston when the actuator performs a movement in the drawing down.
  • an arrow is shown, which indicates the movement of this piston when the piston 39 carries out the movement indicated by its arrow.
  • the movable valve piece 51 is formed substantially conically with a cylindrical extension. In particular, it rests against the valve seat 53 with the conical part in the closed state.
  • the valve piece 51 is biased by a guided by the cylindrical extension compression spring 54 in the direction of its valve seat 53. In its blocking position, it has been moved "out", namely in the direction of high pressure in the control chamber 43 to a region of lower pressure (leakage pressure).
  • the exhaust valve is therefore referred to in this case as an A-valve.
  • the valve seat 53 facing side of the Valve piece 51 is rigidly connected to an actuating part which is connected to the hydraulic coupler.
  • the connection with the piston 37 is advantageous tensile strength for a particularly fast closing.
  • the actuator 31 is connected to the piston 39 by a rod 61 having a diameter d5.
  • the piston 40 is connected to the movable valve member 51 to be actuated by a rod 63 having a diameter d1.
  • the outer piston 39 has an annular piston surface with an area size f4, the inner piston 40 has a diameter d2 (and therefore an area size 0.25 x ⁇ x d2 2 ).
  • the clear diameter of the valve seat 53 where the movable valve member abuts against it is d3.
  • Guide gaps 65 and 67 which serve to slide the pistons and through which a coupler volume is filled with fuel, are formed in the area of the outer cylindrical surface of the outer piston (opposite to a housing, not shown) and in the area of mutual sliding of the two pistons.
  • the other end region of the inner piston 40 projects into a filling space 71-2, which is filled with CR pressure via an annular groove 71 'via a channel 71 "in the piston 39.
  • the booster chamber 72 is filled 72 is penetrated by the rod 63.
  • the filling space 71-1 is penetrated by the rod 61.
  • the pistons 39 and 40 move in opposite directions and because of the desired path ratio from the actuator to the control valve at different speeds.
  • CR pressure pressure of the pressure accumulator or common rail
  • the valve member 51 is closed by the pressure in the booster chamber 72 with a proportional to (d2 2 - d1 2 ) force.
  • the filling space 71-2 is filled with CR pressure, as a result of which the seat diameter d3 of the valve part 51 can be selected to be very large, since the piston 40 largely compensates for this surface with its rear side located in the filling space 71-2.
  • the invention provides an advantageous A-valve servo-injector with CR pressure assist for very fast opening and closing of the injector.
  • the coupler ensures a short overall length.
  • An important feature of the invention is that at the rear (as opposed to the side of the booster chamber) of the piston directly connected to the control valve 40 rail pressure is applied, which supports the actuation of the control valve and the valve member 51 in the locked state of the control chamber 43rd counteracts acting pressure.
  • the force to be supplied by the actuator for closing the valve is therefore smaller than the known one.
  • a valve 51 is provided with a larger diameter d3 than the known one, which permits faster opening and closing allows the injection valve, because the flow increase and decrease in this is greater than in the known smaller A-valve.
  • a compression spring 75 in the filling chamber 71-2 pushes the pistons apart and ensures good contact of the coupler on the actuator 31 and with the valve closed 51 of the valve seat 53.
  • the invention also covers embodiments in which the high pressure fuel is not supplied by a high pressure accumulator but by a pump (e.g., unit injector) associated with the injector which also feeds the charge space.
  • a pump e.g., unit injector

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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)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un dispositif d'injection de carburant (1) comprenant : une soupape d'injection (9) ; une conduite (5) acheminant du carburant haute pression à la soupape d'injection (9), lors du fonctionnement du dispositif ; et une soupape de régulation (41) qui régule la pression dans une chambre de commande (43) de la soupape d'injection, communiquant avec ladite conduite (5). La partie mobile (51) de ladite soupape de régulation peut être actionnée par un actionneur (31) par l'intermédiaire d'un coupleur hydraulique (38). Les pistons (39, 40) sont emboîtés l'un dans l'autre de manière parallèle. Une chambre de multiplication (72) est située aux extrémités des pistons qui font face à l'actionneur (31). Une chambre de remplissage (71-2) est située à l'intérieur du piston extérieur (39) et communique avec ladite conduite (5). La direction du mouvement de fermeture de la partie de soupape mobile (51) coïncide avec la direction dans laquelle le carburant sort de la chambre de régulation (43), de sorte que la force exercée sur la soupape de régulation est au moins partiellement compensée en raison de la pression agissant sur l'autre piston (40) dans la chambre de remplissage (71-2).

Claims (1)

  1. Dispositif d'injection de carburant (1) comprenant une soupape d'injection (9), une conduite haute pression (5) acheminant du carburant à haute pression à la soupape d'injection (9) pendant le fonctionnement, et une soupape de commande (41) commandant la pression dans une chambre de commande (43) de la soupape d'injection connectée à la conduite haute pression (5), dont la partie de soupape mobile (51) peut être actionnée par un actionneur (31) par le biais d'un coupleur hydraulique (38), qui présente deux pistons (39, 40) coopérant avec un volume de couplage du coupleur, le siège (53) de la partie de soupape mobile (51) présentant une surface en section transversale intérieure f3, les pistons (39, 40) étant disposés l'un dans l'autre et parallèlement l'un à l'autre, le piston extérieur (39) étant accouplé mécaniquement par une surface de piston f4 à l'actionneur (31) par le biais d'une tige (61) avec une surface en section transversale f5, et le piston intérieur (40), qui présente une surface de piston f2, actionnant la soupape de commande (41) par le biais d'une tige (63) avec une surface en section transversale f1 plus petite que f2,
    caractérisé en ce que
    le piston extérieur (39) limite avec son extrémité tournée vers l'actionneur (31) un premier espace de remplissage haute pression (71-1), qui est connecté à la conduite haute pression (5),
    en ce qu'à l'intérieur du piston extérieur (39) est prévu un deuxième espace de remplissage haute pression (71-2), qui est connecté à la conduite haute pression (5), en ce qu'à l'extrémité des pistons (39, 40) opposée à l'actionneur (31) est disposé un espace multiplicateur (72) qui est connecté par le biais de fentes de guidage (65, 67) aux deux espaces de remplissage haute pression (71-1, 71-2),
    et en ce que la direction du mouvement de fermeture de la partie de soupape mobile (51) coïncide avec la direction du carburant sortant de la chambre de commande (43), de sorte que la soupape de commande (41) soit au moins partiellement équilibrée en force grâce à la haute pression agissant sur le piston intérieur (40) dans le deuxième espace de remplissage haute pression (71-2).
EP04738649A 2003-07-24 2004-06-09 Dispositif d'injection de carburant Expired - Lifetime EP1651855B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10333697A DE10333697A1 (de) 2003-07-24 2003-07-24 Kraftstoffeinspritzvorrichtung
PCT/DE2004/001197 WO2005010340A1 (fr) 2003-07-24 2004-06-09 Dispositif d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1651855A1 EP1651855A1 (fr) 2006-05-03
EP1651855B1 true EP1651855B1 (fr) 2010-01-27

Family

ID=34088792

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738649A Expired - Lifetime EP1651855B1 (fr) 2003-07-24 2004-06-09 Dispositif d'injection de carburant

Country Status (7)

Country Link
US (1) US7275520B2 (fr)
EP (1) EP1651855B1 (fr)
JP (1) JP2007506888A (fr)
KR (1) KR20060041263A (fr)
DE (2) DE10333697A1 (fr)
TW (1) TW200504281A (fr)
WO (1) WO2005010340A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4270294B2 (ja) * 2007-03-05 2009-05-27 株式会社デンソー 燃料噴射弁
JP4674603B2 (ja) * 2007-11-22 2011-04-20 株式会社デンソー インジェクタ
US7665445B2 (en) * 2008-04-18 2010-02-23 Caterpillar Inc. Motion coupler for a piezoelectric actuator
DE102008001331A1 (de) * 2008-04-23 2009-10-29 Robert Bosch Gmbh Kompakte Einspritzvorrichtung mit Flachanker-Luftsteller
ATE546636T1 (de) * 2009-08-26 2012-03-15 Delphi Tech Holding Sarl Kraftstoffeinspritzdüse
DE102012209965A1 (de) 2012-06-14 2013-12-19 Robert Bosch Gmbh Verfahren zum Betreiben eines Ventils
EP2882955B1 (fr) * 2012-08-08 2017-01-04 Volvo Lastvagnar AB Système de commande de débit
DE102014211334B3 (de) * 2014-06-13 2015-08-27 Continental Automotive Gmbh Verfahren zur Charakterisierung eines hydraulischen Koppelelementes eines Piezo-Injektors

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732802A1 (de) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE19742073A1 (de) * 1997-09-24 1999-03-25 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
JPH11193763A (ja) 1997-12-26 1999-07-21 Nippon Soken Inc 内燃機関の燃料噴射弁とその駆動方法
DE19860678A1 (de) * 1998-12-29 2000-07-06 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
GB9905896D0 (en) * 1999-03-16 1999-05-05 Lucas Ind Plc Fuel injector arrangement
DE19949528A1 (de) * 1999-10-14 2001-04-19 Bosch Gmbh Robert Doppelschaltendes Steuerventil für einen Injektor eines Kraftstoffeinspritzsystems für Brennkraftmaschinen mit hydraulischer Verstärkung des Aktors
DE19951144A1 (de) 1999-10-23 2001-04-26 Bosch Gmbh Robert Injektor für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen mit hydraulischer Vorspannung des Druckübersetzers
DE10029629A1 (de) 2000-06-15 2002-01-03 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10031580A1 (de) * 2000-06-29 2002-01-17 Bosch Gmbh Robert Druckgesteuertes Steuerteil für Common-Rail-Injektoren
DE10044120A1 (de) 2000-09-07 2002-04-04 Bosch Gmbh Robert Common-Rail-System
US20030062026A1 (en) 2000-09-07 2003-04-03 Friedrich Boecking Common rail system
DE10101802A1 (de) 2001-01-17 2002-07-18 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10118054A1 (de) 2001-04-11 2002-10-17 Bosch Gmbh Robert Hydraulische Arbeitsmaschine
DE10118053A1 (de) * 2001-04-11 2002-10-24 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10157411A1 (de) * 2001-11-23 2003-06-26 Bosch Gmbh Robert Injektor zur Hochdruckeinspritzung von Kraftstoff
DE10337574A1 (de) * 2003-08-14 2005-03-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen

Also Published As

Publication number Publication date
US20060219805A1 (en) 2006-10-05
TW200504281A (en) 2005-02-01
US7275520B2 (en) 2007-10-02
DE502004010708D1 (de) 2010-03-18
KR20060041263A (ko) 2006-05-11
WO2005010340A1 (fr) 2005-02-03
EP1651855A1 (fr) 2006-05-03
DE10333697A1 (de) 2005-02-24
JP2007506888A (ja) 2007-03-22

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