EP1309791B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1309791B1
EP1309791B1 EP01960142A EP01960142A EP1309791B1 EP 1309791 B1 EP1309791 B1 EP 1309791B1 EP 01960142 A EP01960142 A EP 01960142A EP 01960142 A EP01960142 A EP 01960142A EP 1309791 B1 EP1309791 B1 EP 1309791B1
Authority
EP
European Patent Office
Prior art keywords
armature
fuel injection
injection valve
valve
return spring
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
EP01960142A
Other languages
German (de)
English (en)
Other versions
EP1309791A1 (fr
Inventor
Thomas Sebastian
Matthias Boee
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 EP1309791A1 publication Critical patent/EP1309791A1/fr
Application granted granted Critical
Publication of EP1309791B1 publication Critical patent/EP1309791B1/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
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/066—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • 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
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
    • F02M51/0653—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve
    • F02M51/0657—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto the valve being an elongated body, e.g. a needle valve the body being hollow and its interior communicating with the fuel flow

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • an electromagnetically operable fuel injection valve in which for the electromagnetic actuation an armature cooperates with an electrically energizable magnetic coil and the stroke of the armature is transmitted via a valve needle to a valve closing body.
  • the valve closing body cooperates with a valve seat surface to form a sealing seat.
  • several fuel channels are provided in the anchor several fuel channels are provided. The return of the anchor is done with a return spring.
  • an electromagnetically operable fuel injection valve in which also an armature cooperates with an electrically energizable magnetic coil. The stroke of the armature is transmitted via a valve needle to a valve closing body.
  • a disadvantage of the fuel injection valves known from the above publications is in particular the lack of free flow space for the fuel, which is through the arrangement of the valve needle is conditioned in a recess of the armature.
  • a disadvantage of the fuel injection valves known from the above publications is in particular the lack of free flow space for the fuel, which is through the arrangement of the valve needle is conditioned in a recess of the armature.
  • large pressure differences occur between the armature upper side and the armature underside, since the pressure compensation is hindered.
  • the diameter of holes which are mounted in the armature to allow the fuel to pass through is limited due to the necessary armature pole area and the small amount of space available.
  • a fuel injection valve which has a magnet coil, an armature acted upon in a closing direction by a return spring and a valve needle which is non-positively connected to the armature for actuation of a valve closing body which forms a sealing seat together with a valve seat surface.
  • the anchor has a cup-shaped axial extension as a guide tube with a bottom part, in which at least one opening is formed.
  • the extension as a guide tube is made in one piece with the anchor.
  • the guide tube itself forms a bottom part, which is penetrated in an opening of the valve needle.
  • a return spring for the valve needle is arranged in an inner recess of the guide tube, which is supported on the one hand on the valve needle and on the other hand on an additional attached to an adjusting support flange.
  • the complex construction becomes even more complicated and difficult to assemble by a second return spring for the armature, which is supported on the one hand on a shoulder of the adjusting sleeve and on the other hand on a further additional Abstutzflansch, which in turn must be placed on a shoulder in the anchor.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that the fuel can flow through the anchor unhindered by a large anchor hole and the openings which are mounted in a pot-shaped extension of the armature.
  • the anchor hole has the same diameter as an inner longitudinal opening of the inner pole of the magnetic coil.
  • the pressure difference between the upper side of the armature and the lower side can thereby be reduced to an arbitrarily small value. Due to the larger anchor hole, the effective anchor area can be reduced and thus the residual pressure acting on the anchor can be reduced. This leads to shorter valve opening times and to a reduction of the dispersion in the switching times due to fluctuations in the pressure difference.
  • the corresponding components for implementing this principle are all arranged in the outflow direction after the armature, whereby the flow through the armature is not hindered.
  • a hollow cylindrical valve needle which is arranged axially displaceable in the extension of the armature and is traversed by fuel.
  • the pot-shaped extension of the armature can be formed integrally with this or consist of two separate components.
  • the extension preferably has at least two openings, which accommodates a uniform flow through the extension. However, there are also several or only one opening possible. The openings are accordingly separated from each other by an equal number of Kreissegementen of the hollow cylindrical extension.
  • FIG. 1 shows a sectional, highly schematic sectional view of a longitudinal section through an example of a fuel injection valve 1.
  • the fuel injection valve 1 has a magnetic coil 2 which cooperates with an armature 3.
  • the magnet coil 2 cooperates with an inner pole 4 and an outer pole 5.
  • the outer pole 5 continues downstream in a valve housing 6.
  • the armature 3 has an extension 7, which is formed as a hollow cylinder and is arranged on a downstream side 34 of the armature 3.
  • the extension 7 has a bottom part 24 which terminates the extension 7 downstream.
  • a return spring 9 is arranged in an inner recess 8, which is formed in the armature 3 and the extension 7, .
  • the return spring 9 is brought by an inserted into the inner pole 4 adjustment sleeve 10 in a recess 11 of the inner pole 4 on bias.
  • valve needle 13 is supported.
  • the valve needle 13 is preferably welded to the bottom part 24 of the extension 7.
  • the valve needle 13 has at a downstream end 37 a valve closing body 14 which cooperates with a formed on a valve seat body 15 valve seat surface 16 to a sealing seat.
  • a discharge opening 17 is formed in the valve seat body 15 .
  • the fuel is supplied via a central fuel supply 18, flows through the recess 11 of the inner pole 4 and through the recess 8 of the extension 7 and exits from the extension 7 through openings 20, which are further identified in FIG. 1B. Thereafter, the fuel flows through the valve housing 6 to the sealing seat.
  • the valve closing body 14 In the idle state of the fuel injection valve 1, the valve closing body 14 is held by the bias of the return spring 9 in sealing engagement with the valve seat surface 16. The fuel injection valve 1 is thus closed. If the magnetic coil 2 is supplied with an exciting current, the armature 3 is pulled against the force of the return spring 9 after sufficient buildup of the magnetic field in the direction of the inner pole 4. After passing through an anchor stroke predetermined by the size of a working gap 19, the armature 3 with an inlet-side armature end face 21 strikes against an armature stop 22 formed on the inner pole 4. Fuel flows from the central fuel supply 18 through the recesses 11 and 8 and the openings 20 in the direction of sealing seat.
  • the armature 3 drops after sufficient degradation of the magnetic field by the force of the return spring 9 from the inner pole 4, whereby the valve needle 13 moves in the outflow direction, the valve closing body 14 on the valve seat surface sixteenth touches down and the fuel injection valve 1 is closed.
  • FIG. 1B shows, in an excerpted schematic sectional view, a section through the extension 7 along the line IB-IB in FIG. 1A.
  • the extension 7 is hollow cylindrical in its basic form and consists of several segments 23, preferably at least two, between which there is a corresponding number of openings 20 in the circumferential direction.
  • the segments 23 forming a jacket part of the extension 7 are preferably formed integrally with the bottom part 24 of the extension 7.
  • the return spring 9 is supported on the bottom part 24, the return spring 9 is supported.
  • the valve needle 13 is supported, as described in more detail with reference to FIG. 1A.
  • the fuel which flows in centrally, flows out of the extension 7 through the recess 8 of the extension 7 and through the openings 20.
  • the size of the recess 8 and the openings 20 between the segments 23 ensures that the fuel can flow through the fuel injector 1 without significantly damaging the armature 3.
  • the fuel injection valve 1 can be operated particularly advantageous if the so-called Vorhubhan is used.
  • the armature 3 is first pre-accelerated and undergoes a partial stroke, during which the valve needle 13 is not yet taken. Only after reaching a first anchor stop the valve needle is taken over suitable devices against the force of a second return spring.
  • the magnetic circuit is unaffected by the partial stroke.
  • the diameter of the inner pole. 4 be selected smaller, whereby the effective magnetic pole surface and thus the acting magnetic force can be increased.
  • FIG. 2 shows an example of the fuel injection valve 1 in a partially enlarged sectional view as compared to FIG. 1A.
  • the extension 7 of the armature 3 in the bottom part 24 has a recess 25 which is penetrated by the valve needle 13.
  • the valve needle 13 At its inlet-side end 36, the valve needle 13 has a flange 26 which has a protruding collar 27.
  • the valve needle 13 is preferably welded to the flange 26, but may also be made in one piece with this.
  • the first return spring 9 On the collar 27 of the flange 26, the first return spring 9 is supported. Between the collar 27 and the bottom part 24, a second return spring 28 is clamped.
  • the spring constant of the second return spring 28 is considerably smaller than the spring constant of the first return spring 9, to allow movement of the armature 3 without the valve needle 13.
  • the first return spring 9 presses the valve needle 13 via the collar 27 of the flange 26 to the sealing seat.
  • the armature 3 lies on an armature support 29, which is annular in the valve housing 6 is formed. 2 is energized, the armature 3 moves in the direction of the inner pole 4. At this time, the armature 3 must move only against the force of the second return spring 28, since the spring constant of the second Return spring 28 is so small that the armature 3 is not significantly inhibited in its movement, the valve needle 13, however, still remains at rest.
  • the armature 3 strikes against the armature stop 22 of the inner pole 4 with its inlet-side armature end face 21.
  • the solenoid coil 2 is energized, the fuel injection valve 1 remains in the open position. If the coil current is switched off, the armature 3 drops from the inner pole 4 by the force of the first return spring 9 together with the flange 26 and the valve needle 13 which is non-positively connected with the flange 26. The closing movement takes place in a train over the total stroke, whereby the fuel injection valve 1 can be closed quickly.
  • Fig. 3 shows an excerpt, schematic sectional view of an embodiment of the fuel injection valve 1 according to the invention in connection with the Vorhubtex.
  • valve needle 13 is designed in the present embodiment as a hollow cylinder and thereby assumes the function of only rudimentary trained extension 7.
  • the valve needle 13 has transverse outflow openings 31.
  • the extension 7 of the armature 3 is formed in the present embodiment without bottom part 24, but instead is welded to a sleeve 32 which is penetrated by the valve needle 13.
  • the valve needle 13 has at its inlet end a collar 33, which is pressed by the second return spring 28 which is clamped between the sleeve 32 and the collar 33 against the abströmmatitige anchor end face 34.
  • the first return spring 9 is guided, which is supported on the inlet-side end 36 of the valve needle 13.
  • the sum of the cross-sectional areas of the transverse outflow openings 31 of the valve needle 13 should be greater than or at least equal to the cross-sectional area of the recess 8 of the armature 3.
  • the armature 3 When the magnetic coil 2 is energized, the armature 3, as in the example of FIG. 2, first passes through a preliminary stroke which corresponds to a height of the preliminary stroke gap 30 between the sleeve 32 and the collar 33 of the valve needle 13. Once the sleeve 32 abuts the collar 33, the armature 3 takes against the force of the first return spring 9, the valve needle 13 with. After passing through the Vorhubs or closing the working gap 19 between the inlet-side anchor end face 21 and the anchor stop 22 of the inner pole 4, the armature 3 strikes the inner pole 4. As long as the solenoid coil 2 is energized, the fuel injection valve 1 remains in the open position.
  • the armature 3 drops off the inner pole 4 after sufficient removal of the magnetic field by the force of the first return spring 9, and the fuel injection valve 1 is closed.
  • An inner recess 35 of the valve needle 13 is slightly smaller in diameter than the recess 11 of the inner pole 4 and the recess 8 of the armature 3 formed-This can form a slight back pressure on the collar 33, the operation of the fuel injector, 1 by a slight contribution to the closing force.

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

Claims (6)

  1. Injecteur de carburant (1), en particulier pour des systèmes d'injection de moteurs à combustion interne, comprenant une bobine magnétique (2), un induit (3) sollicité dans une direction de fermeture par un ressort de rappel (9) et une aiguille de soupape (13) liée par complémentarité de forces à l'induit (3) pour actionner un corps de fermeture de soupape (14) qui, conjointement avec une surface de siège de soupape (16), forme un siège d'étanchéité, l'induit (3) présentant un appendice axial (7) en forme de pot avec une partie de fond dans laquelle est formée au moins une ouverture,
    caractérisé en ce que
    la partie de fond est formée par une douille (32) et l'appendice (7) est relié à la douille (32) dans laquelle est disposée de manière mobile l'aiguille de soupape (13), et l'extrémité côté admission (36) de l'aiguille de soupape (13) présente un collet (33) disposé entre une surface frontale d'induit (34) côté écoulement et la douille (32), et entre le collet (33) de l'aiguille de soupape (13) et la douille (32) est disposé un deuxième ressort de rappel (28).
  2. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'induit (3) présente un évidement intérieur (8) dans lequel est placé le ressort de rappel (9).
  3. Injecteur de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    le ressort de rappel (9) prend appui sur le collet (33).
  4. Injecteur de carburant selon la revendication 1,
    caractérisé en ce que
    l'aiguille de soupape (13) a une forme cylindrique creuse et présente au moins deux ouvertures de sortie (31).
  5. Injecteur de carburant selon les revendications 1 à 4,
    caractérisé en ce que
    l'induit (3) coopère avec un pôle intérieur (4) faisant partie du circuit électromagnétique, le pôle intérieur (4) et l'induit (3) présentent chacun un évidement intérieur (11, 8), et le diamètre de l'évidement (8) de l'induit (3) correspond au diamètre de l'évidement (11) du pôle intérieur (4).
  6. Injecteur de carburant selon la revendication 4,
    caractérisé en ce que
    la somme des surfaces de section transversale des ouvertures de sortie (31) est supérieure ou au moins égale à la surface de section transversale de l'évidement (8) de l'induit (3).
EP01960142A 2000-08-10 2001-08-03 Soupape d'injection de carburant Expired - Lifetime EP1309791B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10039077A DE10039077A1 (de) 2000-08-10 2000-08-10 Brennstoffeinspritzventil
DE10039077 2000-08-10
PCT/DE2001/002961 WO2002012712A1 (fr) 2000-08-10 2001-08-03 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1309791A1 EP1309791A1 (fr) 2003-05-14
EP1309791B1 true EP1309791B1 (fr) 2006-06-14

Family

ID=7651995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01960142A Expired - Lifetime EP1309791B1 (fr) 2000-08-10 2001-08-03 Soupape d'injection de carburant

Country Status (5)

Country Link
US (1) US6857584B2 (fr)
EP (1) EP1309791B1 (fr)
JP (1) JP4838482B2 (fr)
DE (2) DE10039077A1 (fr)
WO (1) WO2002012712A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004024533A1 (de) 2004-05-18 2005-12-15 Robert Bosch Gmbh Brennstoffeinspritzventil
ITBO20050295A1 (it) * 2005-04-29 2006-10-30 Magneti Marelli Powertrain Spa Inietore di carburante con attuatore elettromagnetico
US7779854B2 (en) * 2007-01-12 2010-08-24 Caterpillar Inc Valve member to armature coupling system and fuel injector using same
US8387599B2 (en) 2008-01-07 2013-03-05 Mcalister Technologies, Llc Methods and systems for reducing the formation of oxides of nitrogen during combustion in engines
US8561598B2 (en) * 2008-01-07 2013-10-22 Mcalister Technologies, Llc Method and system of thermochemical regeneration to provide oxygenated fuel, for example, with fuel-cooled fuel injectors
EP2166220B1 (fr) * 2008-09-19 2012-02-29 Continental Automotive GmbH Soupape d'injection
JP4935882B2 (ja) * 2009-03-05 2012-05-23 株式会社デンソー 燃料噴射弁
EP2333297B1 (fr) * 2009-12-11 2013-03-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
EP2365205B1 (fr) 2010-03-03 2013-05-15 Continental Automotive GmbH Soupape d'injection
DE102010043097A1 (de) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Druckregelventil
DE102012210424A1 (de) * 2012-06-20 2013-12-24 Robert Bosch Gmbh Einspritzventil
US9115325B2 (en) 2012-11-12 2015-08-25 Mcalister Technologies, Llc Systems and methods for utilizing alcohol fuels
JP6264966B2 (ja) * 2014-03-14 2018-01-24 株式会社デンソー 燃料噴射装置
JP5905046B2 (ja) * 2014-04-23 2016-04-20 日立オートモティブシステムズ株式会社 電磁吸入弁を備えた高圧燃料供給ポンプ
US10690097B2 (en) 2015-08-25 2020-06-23 Hitachi Automotive Systems, Ltd. Electromagnetic valve
EP3153700A1 (fr) * 2015-10-08 2017-04-12 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection, une telle soupape et procédé pour assembler ladite soupape

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408012A1 (de) * 1984-03-05 1985-09-05 Gerhard Dipl.-Ing. Warren Mich. Mesenich Elektromagnetisches einspritzventil
JPS6315373A (ja) * 1986-07-05 1988-01-22 Kan Oteru 楽譜五線検出方式
US4946107A (en) 1988-11-29 1990-08-07 Pacer Industries, Inc. Electromagnetic fuel injection valve
DE4003228A1 (de) * 1990-02-03 1991-08-22 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
DE4125155C1 (fr) * 1991-07-30 1993-02-04 Robert Bosch Gmbh, 7000 Stuttgart, De
US5397055A (en) * 1991-11-01 1995-03-14 Paul; Marius A. Fuel injector system
US5544816A (en) * 1994-08-18 1996-08-13 Siemens Automotive L.P. Housing for coil of solenoid-operated fuel injector
US5570842A (en) 1994-12-02 1996-11-05 Siemens Automotive Corporation Low mass, through flow armature
DE19503821A1 (de) 1995-02-06 1996-08-08 Bosch Gmbh Robert Elektromagnetisch betätigbares Ventil
US5625946A (en) * 1995-05-19 1997-05-06 Siemens Automotive Corporation Armature guide for an electromechanical fuel injector and method of assembly
DE19626576A1 (de) 1996-07-02 1998-01-08 Bosch Gmbh Robert Brennstoffeinspritzventil
JPH10122083A (ja) * 1996-10-15 1998-05-12 Zexel Corp 燃料噴射弁
DE19712589C1 (de) * 1997-03-26 1998-06-04 Bosch Gmbh Robert Brennstoffeinspritzventil und Verfahren zur Herstellung einer Ventilnadel eines Brennstoffeinspritzventils
DE19816315A1 (de) 1998-04-11 1999-10-14 Bosch Gmbh Robert Brennstoffeinspritzventil

Also Published As

Publication number Publication date
US6857584B2 (en) 2005-02-22
JP2004506130A (ja) 2004-02-26
DE10039077A1 (de) 2002-02-21
US20030102386A1 (en) 2003-06-05
DE50110166D1 (de) 2006-07-27
JP4838482B2 (ja) 2011-12-14
WO2002012712A1 (fr) 2002-02-14
EP1309791A1 (fr) 2003-05-14

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