EP1335128A2 - Soupape hydraulique à haute pression, notamment pour un dispositif d'injection de carburant d'un moteur - Google Patents

Soupape hydraulique à haute pression, notamment pour un dispositif d'injection de carburant d'un moteur Download PDF

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Publication number
EP1335128A2
EP1335128A2 EP03001990A EP03001990A EP1335128A2 EP 1335128 A2 EP1335128 A2 EP 1335128A2 EP 03001990 A EP03001990 A EP 03001990A EP 03001990 A EP03001990 A EP 03001990A EP 1335128 A2 EP1335128 A2 EP 1335128A2
Authority
EP
European Patent Office
Prior art keywords
valve
valve member
pressure chamber
pressure
sealing surface
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.)
Granted
Application number
EP03001990A
Other languages
German (de)
English (en)
Other versions
EP1335128A3 (fr
EP1335128B1 (fr
Inventor
Nestor Rodriguez-Amaya
Walter Egler
Christoph Hollmann
Hubert Greif
Godehard Nentwig
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 EP1335128A2 publication Critical patent/EP1335128A2/fr
Publication of EP1335128A3 publication Critical patent/EP1335128A3/fr
Application granted granted Critical
Publication of EP1335128B1 publication Critical patent/EP1335128B1/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
    • 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
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating 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
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
    • 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
    • F02M63/0045—Three-way valves
    • 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
    • F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion

Definitions

  • the invention relates to a valve for controlling a Connection in a high pressure fluid system, in particular a fuel injection device for a Internal combustion engine according to the preamble of claim 1.
  • Such a valve is known from EP 0 840 003 A.
  • This valve is used to control a connection in a Fuel injection device for an internal combustion engine.
  • the valve has a valve member that is directed towards it Longitudinal axis is guided, which is in a pressure chamber protrudes and that in the pressure room at a cross to his Longitudinally arranged end face a sealing surface having.
  • the valve member cooperates with its sealing surface a valve seat arranged transversely to its longitudinal axis for Closing an opening surrounded by the valve seat towards the pressure room together.
  • the pressure room prevails high pressure and the opening leads to one Relief chamber, the connection through the valve member the pressure chamber with the relief chamber and thus the pressure is controlled in the pressure room.
  • valve according to the invention with the features according to claim 1 has the advantage that the functionality of the valve also over a long service life of the valve is ensured.
  • the valve thus has a total low leakage, but over the period of use remains at least approximately constant.
  • the training according to claim 3 enables easy formation of the passages.
  • the Training according to claim 4 enables a low Flow velocity of those flowing out of the pressure chamber Liquid.
  • By training according to claim 6 achieved that the flow rate of the outflowing Liquid is at least approximately constant.
  • Training according to claim 7 enables easy production of Valve member.
  • FIG. 1 shows a Fuel injection device for an internal combustion engine in a longitudinal section in a simplified representation with a Valve
  • Figure 2 shows the valve in an enlarged view a longitudinal section
  • Figure 3 shows the valve in a cross section along line III-III in Figure 2 and Figure 4 one in Figure 2 with IV designated section of the valve in an enlarged Presentation.
  • FIG. 1 is a fuel injection device for a Internal combustion engine of a motor vehicle shown.
  • the Internal combustion engine is preferably a self-igniting Internal combustion engine.
  • the fuel injector is preferably designed as a so-called pump-nozzle unit and points for each cylinder of the internal combustion engine a high pressure fuel pump 10 and one with this connected fuel injector 12, the one form a common unit.
  • the Fuel injection device also as a so-called pump-line-nozzle system be trained in which the High pressure fuel pump and the fuel injection valve each cylinder arranged separately and over a line are connected.
  • the High-pressure fuel pump 10 has a pump body 14 a cylinder bore 16 in which a pump piston 18 is tightly led, at least indirectly by one Cam 20 counter to a camshaft of the internal combustion engine the force of a return spring 19 in one stroke is driven.
  • the pump piston 18 is limited in the Cylinder bore 16 a pump working space 22, in which Delivery stroke of the pump piston 18 fuel under high pressure is compressed.
  • the pump work space 22 becomes fuel from a fuel tank 24 of the motor vehicle fed.
  • the fuel injection valve 12 has one with the Pump body 14 connected valve body 26, the can be formed in several parts, and in the one Injection valve member 28 in a bore 30 is guided longitudinally.
  • the valve body 26 instructs its the combustion chamber of the cylinder of the internal combustion engine facing end region at least one, preferably several Injection openings 32 on.
  • the injection valve member 28 has at its end area facing the combustion chamber for example, approximately conical sealing surface 34, which with one in the valve body 26 in its facing the combustion chamber End region trained valve seat 36 cooperates from after or after which the injection openings 32 discharge.
  • valve body 26 in the Valve body 26 is between the injection valve member 28 and an annular space 38 toward the bore 30 toward the valve seat 36 available, the one facing away from the valve seat 36 End area through a radial expansion of the bore 30 in a pressure chamber 40 surrounding the injection valve member 28 transforms.
  • the injection valve member 28 has the level of Pressure chamber 40 by reducing a cross section Pressure shoulder 42 on.
  • Injector member 28 engages a biased one Closing spring 44 through which the injection valve member 28 is pressed towards the valve seat 36.
  • the closing spring 44 is arranged in a spring chamber 46 of the valve body 26, the connects to the bore 30.
  • the bore 48 forms a control pressure chamber 52 through the control piston 50 is limited as a movable wall.
  • the control piston 50 is supported by a diameter smaller piston rod 51 on the injection valve member 28 and may be connected to the injector member 28.
  • the Spool 50 may be integral with the injector member 28 is formed, but is for reasons of assembly preferably as a separate part with the injection valve member 28 connected.
  • the control valve 68 can as in Figure 1 shown to be designed as a 2/2-way valve.
  • the Circuit of the control valve 68 between its two Switch positions are carried out by an actuator 69 for example an electromagnet can be against one Return spring.
  • a second electrically operated control valve 70 is provided to control the pressure in the control pressure chamber 52 .
  • the second control valve 70 is a 3/2-way valve trained that switchable between two switch positions is. In a first switching position of the control valve 70 through this the control pressure chamber 52 with the Pump work space 22 connected and from the relief space 24 separated and in a second switching position of the Control valve 70 is through this the control pressure chamber 52 from Pump working space 22 separately and with the relief space 24 connected.
  • a throttle point 63 In the connection 62 of the control pressure chamber 52 with the pump work chamber 22 is a throttle point 63 provided and in the connection 64 of the control pressure chamber 52 with the relief chamber 24 is a throttle point 65 intended.
  • the throttle point 63 can be in the connection 62 upstream of the control valve 70 or as in FIG.
  • control valve 70 has an actuator 71, which can be an electromagnet, and through which the control valve 70 against a return spring can be switched between its two switch positions can.
  • the two control valves 68, 70 are replaced by one driven electronic control device 67.
  • the second control valve 70 is subsequently based on the Figures 2 and 3 explained in more detail.
  • the control valve 70 has a valve member 72 which in the direction of its longitudinal axis 73 is slidably guided over a shaft 74 and with an enlarged in diameter compared to the shaft 74 End region 75 protrudes into a valve pressure chamber 77.
  • In the Valve pressure chamber 77 opens on the one hand the connection 62 to Pump workspace 22 and on the other hand the connection 64 to Relief chamber 24.
  • the connection 62 runs as one between the shaft 74 and a bore surrounding it 76 trained annular gap.
  • the bore 76 is in the Smaller diameter than the valve pressure chamber 77.
  • connection 64 opens into an opening 78 in the Valve pressure chamber 77 and is surrounded by an area 79 which across, preferably at least approximately perpendicular to Longitudinal axis 73 of the valve member 72 and one Valve seat forms.
  • the valve member 72 faces the valve seat 79 towards an at least approximately cylindrical extension 80 whose end face forms a sealing surface 81 which is transverse, preferably at least approximately perpendicular to the longitudinal axis 73 of the valve member 72 extends.
  • the approach 80 has one smaller diameter than the end portion 75 of the Valve member 72, the diameter of the neck 80th however, is larger than that of the opening 78.
  • Within the Approach 80 has a depression 82 on the end face, so that the sealing surface 81 is annular.
  • the inner shoulder 81 of the valve member 72 is of one another at least approximately cylindrical outer approach 83 surrounded with a larger diameter.
  • a sealing surface 81 surrounding Annular surface 84 formed in the direction of the longitudinal axis 73 of the valve member 72 offset from the sealing surface 81 is so that the sealing surface 81 opposite the annular surface 84th protrudes by a dimension A towards the valve seat 79.
  • the Annular surface 84 extends transversely to the longitudinal axis 73 of the Valve member 72, preferably at least approximately perpendicular to the longitudinal axis 73.
  • Between the inner shoulder 80 and the outer approach 83 is also opposite the front Annular surface 84 formed recessed annular groove 85.
  • breakthroughs 86 are provided, preferably at least approximately radially to the longitudinal axis 73 of the Valve member 72 extend.
  • the openings 86 represent one Connection between the the jacket of the inner neck 80th surrounding valve pressure chamber 77 and the depression 82 within the approach 80 ago.
  • the breakthroughs are 86 preferably as starting from the sealing surface 81, in the Approach 80 grooves formed.
  • a conical transition surface 87 is provided which one forms the second valve seat.
  • the valve member 72 in Valve pressure chamber 77 is preferably at least approximately pressure balanced so that the valve member 72 in essentially no resulting compressive force in the direction its longitudinal axis 73 results.
  • valve member 72 In the second switching position of the control valve 70 that is Valve member 72 with its sealing surface 81 on valve seat 79 with the annular surface 84 at a distance A from the valve seat 79 is arranged so that between this and the valve seat 79 an annular gap-shaped flow cross section remains free.
  • the second sealing surface 88 of the valve member 72 is in the second switching position at a distance from the second valve seat 87 arranged so that there is 77 high pressure in the valve pressure chamber. Fuel from the valve pressure chamber 77 can flow through the Flow cross section and the openings 86 in the valve member 72 into the depression 82 and from this via the opening 78 and the connection 64 flow into the relief chamber 24.
  • the control valve 70 thus has a defined leakage, the leakage by appropriate choice of the number and the cross-sectional area of the openings 86 is kept small becomes.
  • the flow of the valve pressure chamber 77 outflowing fuel through the flow cross section between the annular surface 84 and the valve seat 79 doing so with low flow velocity, whereby preferably forms a laminar flow.
  • the Flow velocity at the openings 86 is there also low, so that there is no erosion on the valve member 72 or occurs at the valve seat.
  • FIG 4 is a modified version of the Control valve 70 shown, in which the annular surface 84 of the Valve member 72 not perpendicular to the longitudinal axis 73 of the Valve member 72 extends such that this starting from its radially inner edge to its radial approaches the outer edge of the valve seat 79 and thus the Distance A decreases.
  • the ring surface 84 can at least be approximately conical.
  • the Annular surface 84 is so conical that the Flow cross section between the annular surface 84 and the Valve seat 79 with its sealing surface 81 on valve seat 79 adjacent valve member 72 over the radial course of the Annular surface 84 is at least approximately constant.
  • the Flow cross section is through a Cylinder surface formed, which is the product of the Extent, which is the product of twice the radius and ⁇ , and the distance A results. This ensures that the Flow rate of the fuel at least approximately is constant and there is no acceleration of the flow.
  • the annular surface 84 can also be curved his.
  • the Control device To end the pre-injection, the Control device the second control valve 70 in its first Switch position brought so that the control pressure chamber 52 from Relief chamber 24 separately and with the pump work chamber 22 connected is.
  • the first control valve 68 remains in its closed position. Builds up in the control pressure chamber 52 high pressure as in the pump workspace 22, so that on the control piston 50 a large compressive force in the closing direction acts and the injection valve member 28 in its Closed position is moved.
  • the second one Control valve 70 through the control device 67 in its brought second switching position, so that the control pressure chamber 52 connected to the relief chamber 24 and from Pump work space 22 is separated.
  • the Fuel injector 12 then opens as a result of reduced pressure on the control piston 50 and that Injector valve member 28 moves into its Open position.
  • the second one Control valve 70 through the control device 67 in its brought the first switching position so that the control pressure chamber 52nd separated from the relief chamber 24 and with the Pump work space 22 is connected and located in this High pressure builds up and on the control piston 50th Acting force, the fuel injection valve 12 is closed becomes.
  • another one can Post-injection to which the second control valve 70 occurs is brought into its second switching position.
  • the second control valve 70 again brought into its first switching position and / or the first Control valve 68 opened.
  • a control valve 70 configured as described above can also be used with other fuel injectors or High pressure fluid systems to control a connection be used.
  • the control valve 70 can also be used as a 2/2-way valve, as a 2/3-way valve or as a 3/3-way valve be trained.

Landscapes

  • 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)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)
EP03001990A 2002-02-08 2003-01-31 Soupape hydraulique à haute pression, notamment pour un dispositif d'injection de carburant d'un moteur Expired - Lifetime EP1335128B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10205218 2002-02-08
DE10205218A DE10205218A1 (de) 2002-02-08 2002-02-08 Ventil zur Steuerung einer Verbindung in einem Hochdruckflüssigkeitssystem, insbesondere einer Kraftstoffeinspitzeinrichtung für eine Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP1335128A2 true EP1335128A2 (fr) 2003-08-13
EP1335128A3 EP1335128A3 (fr) 2004-10-20
EP1335128B1 EP1335128B1 (fr) 2006-01-04

Family

ID=27588489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03001990A Expired - Lifetime EP1335128B1 (fr) 2002-02-08 2003-01-31 Soupape hydraulique à haute pression, notamment pour un dispositif d'injection de carburant d'un moteur

Country Status (4)

Country Link
US (1) US6820594B2 (fr)
EP (1) EP1335128B1 (fr)
JP (1) JP4335544B2 (fr)
DE (2) DE10205218A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1476655B1 (fr) * 2002-02-12 2005-06-15 Robert Bosch Gmbh Systeme d'injection de carburant pour un moteur a combustion interne

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE524416C2 (sv) * 2002-04-23 2004-08-03 Volvo Lastvagnar Ab Bränsleinsprutningssystem
US7100573B2 (en) * 2002-04-23 2006-09-05 Volvo Lastvagnar Ab Fuel injection system
WO2004072470A1 (fr) * 2003-02-12 2004-08-26 Robert Bosch Gmbh Systeme de pompe d'injection de carburant comportant un mecanisme de post-injection haute pression
US7520266B2 (en) * 2006-05-31 2009-04-21 Caterpillar Inc. Fuel injector control system and method
JP2008208814A (ja) * 2007-02-28 2008-09-11 Nissan Diesel Motor Co Ltd ユニットインジェクタの燃料噴射制御方法およびその制御装置
CN202493731U (zh) * 2010-11-01 2012-10-17 艾默生过程管理调节技术公司 流体调节器
US9004452B2 (en) 2010-11-01 2015-04-14 Emerson Process Management Regulator Technologies, Inc. Valve bodies having integral boost reducing capability
DE102012102651B3 (de) * 2012-03-27 2013-07-18 Jenoptik Robot Gmbh Prüfvorrichtung und Prüfverfahren für ein Verkehrsüberwachungsgerät mit einem Laserscanner
EP2669503A1 (fr) * 2012-05-29 2013-12-04 Delphi Technologies Holding S.à.r.l. Injecteur de carburant
US10982635B2 (en) 2012-05-29 2021-04-20 Delphi Technologies Ip Limited Fuel injector and method for controlling the same
US20140060481A1 (en) * 2012-08-29 2014-03-06 GM Global Technology Operations LLC Method and apparatus of producing laminar flow through a fuel injection nozzle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2336653A (en) * 1942-02-06 1943-12-14 Honeywell Regulator Co Valve
US3857542A (en) * 1972-06-06 1974-12-31 Westinghouse Electric Corp Noise suppressing throttle valve
US4941447A (en) * 1989-02-21 1990-07-17 Colt Industries Inc. Metering valve
DE4001435A1 (de) * 1990-01-19 1991-07-25 Kloeckner Humboldt Deutz Ag Steuerventil
SE466114B (sv) * 1990-05-14 1991-12-16 Tetra Pak Holdings Sa Reglerkaegla
SE508979C2 (sv) * 1996-07-11 1998-11-23 Tac Ab Ventilkägla, ventil och sätt att framställa en ventilkägla
GB9622335D0 (en) * 1996-10-26 1996-12-18 Lucas Ind Plc Injector arrangement
US6152158A (en) * 1999-03-26 2000-11-28 Hu; Zhimin Gaseous wave pressure regulator and its energy recovery system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1476655B1 (fr) * 2002-02-12 2005-06-15 Robert Bosch Gmbh Systeme d'injection de carburant pour un moteur a combustion interne

Also Published As

Publication number Publication date
JP2003239822A (ja) 2003-08-27
EP1335128A3 (fr) 2004-10-20
US6820594B2 (en) 2004-11-23
DE50302088D1 (de) 2006-03-30
US20040079335A1 (en) 2004-04-29
EP1335128B1 (fr) 2006-01-04
JP4335544B2 (ja) 2009-09-30
DE10205218A1 (de) 2003-10-30

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