EP1490591A1 - Device for damping vibrations on fuel injection systems having a high-pressure accumulating space - Google Patents
Device for damping vibrations on fuel injection systems having a high-pressure accumulating spaceInfo
- Publication number
- EP1490591A1 EP1490591A1 EP02798274A EP02798274A EP1490591A1 EP 1490591 A1 EP1490591 A1 EP 1490591A1 EP 02798274 A EP02798274 A EP 02798274A EP 02798274 A EP02798274 A EP 02798274A EP 1490591 A1 EP1490591 A1 EP 1490591A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- pressure collecting
- spring
- spring body
- closing element
- 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
Links
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
- F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
- F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
-
- 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
- F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps
Definitions
- High-pressure plenum rooms are used today in injection systems for injecting fuel into the combustion chambers of air-compressing ner internal combustion engines.
- the high-pressure plenums which are usually configured in tubular form with a thicker wall, include throttle valves which are arranged on pressure pipe connections. By means of the throttle valves, the returning pressure waves generated at the end of the injection process, which can occur in the fuel injector when the nozzle is closed, are damped.
- DE 196 50 865 AI discloses a solenoid valve for controlling the fuel pressure in the control pressure chamber of an injection valve, for example in the injector of a common rail injection system.
- the movement of a valve piston is controlled via the fuel pressure in the control pressure chamber, with which an injection opening of the injection valve is opened and closed again.
- the solenoid valve has an electromagnet arranged in a housing part, a movable armature and a control valve member which is moved by the closing spring and is acted on by the closing arm and which cooperates with a valve seat of the solenoid valve and thus controls the fuel outflow from the control pressure chamber.
- the pressure relief of the control chamber causes a movement of a nozzle needle within the injector body in the opening direction, while a pressurization of the control pressure chamber causes the nozzle needle to close, which is the cause of the pressure pulsations that occur, i.e. is the returning pressure waves.
- DE 197 08 104 AI also shows a solenoid valve for controlling the fuel pressure in the control pressure chamber of an injection valve.
- This valve is also one in the injector T Common rail injection system used.
- the solenoid valve has an electromagnet arranged in a housing part, a movable armature and a control valve member which is moved with the armature and is acted upon by a closing spring in the closing direction and which cooperates with a valve seat of the magnetic valve and thus controls the fuel outflow from the control pressure chamber.
- the armature of the solenoid valve is designed in two parts with an armature bolt and an armature plate mounted on the armature bolt so as to be slidable.
- the two-part design reduces the mass to be braked effectively and thus the bounce behavior of the anchor.
- the armature plate which is movable relative to the armature pin, can swing back in a disadvantageous manner after the solenoid valve has closed on the armature pin and in this way trigger pressure pulsations which occur, that is, returning pressure waves when the injection valve member is closed.
- the solution according to the invention provides a vibration damping valve which is integrated into the interior of the high-pressure collection space (common rail).
- the vibration damping valve proposed according to the invention is further preassembled and securely arranged in the interior of the high-pressure collecting space (common rail).
- the solution proposed according to the invention is used, there are no changes / reworking of existing line systems, be it leading to the high-pressure collection room and it can be used regardless of type according to the modular system.
- Another advantage of the proposed vibration damping valve lies in its considerably lower manufacturing costs compared to the backflow throttle element of the literature references cited at the beginning.
- the closing element of the vibration damping valve advantageously acts on the sealing point of the high-pressure accumulation space (common rail) to the high-pressure line to the injector, and consequently on the point at which returning pressure waves or pressure wave reflections, which occur when an injection valve element is closed, e.g. a nozzle needle occur at the end of the injection process, can run back into the high-pressure collecting chamber (common rail).
- the one-piece closing / spring elements can be produced in a variant-specific manner at considerably lower manufacturing costs, compared to the backflow throttle elements known from the prior art.
- FIG. 1 shows a first embodiment variant of the solution according to the invention, in which a closing element is loaded on a prestressed retaining pin spring,
- FIG. 2 shows a further embodiment of the proposed according to the invention
- Figure 3 shows a third embodiment, which can be mounted in the axial direction into the interior of the high-pressure collecting space (common rail) and
- Figure 4 is a perspective view of a one-piece closing element for integration into a tubular cavity of the high-pressure collecting space with spring tongues punched out on the closing element.
- FIG. 1 shows a first embodiment variant of the solution according to the invention, in which a closing element is received pretensioned on a retaining bolt.
- An illustrated in Figure 1 Hochschersammeiraum 1 essentially circular cavity formed by 'an inner wall 2.
- the one outer wall of the Hochdrucksammeiraumes 1 is as shown in Figure 1 in defining a r "ear-shaped with reference numerals.
- the transverse axis 4 of the Hochdrucksammeiraumes extends in hori- zontal direction, the vertical axis 5 of the Hochdracksammellraum.es extends perpendicular to the transverse axis ..
- the longitudinal axis 6 of the high-pressure collecting space 1 extends in the plane of the drawing at the point of cross axis 4 and vertical axis 5.
- the wall 7 of the Hochdmcksammelraum.es is in a wall thickness 8
- the wall thickness 8 is designed accordingly in order to control the high pressures occurring in the interior of the high-pressure collecting space 1.
- a screw-in connection 11 is screwed into this, with a corresponding external thread section, on which a high-pressure line, not shown in FIG. 1, extending to the corresponding injector of a combustion chamber of an internal combustion engine is received.
- the screw-in connection 11 acts on a disk-like configured component 12, which comprises a first cone 13, which is supported on a conical seat 18 formed on a shoulder 17 of a high-pressure line connection 15.
- the screw-in connection 11 is supported on the upper annular end of the disk-shaped component 12.
- a vibration damping valve is provided according to the solution proposed according to the invention, which essentially on Closing element 19 and a spring body 25 or 32, 40 acting on the closing element via a shaft 22.
- an essentially disk-like configured closing element 19 is shown, the outer contour of which corresponds essentially to the course of the seat surface of the seat 28, in which a bore runs through the wall 7 of the high-pressure collecting chamber 1.
- the closing element 19 comprises a rod-shaped shaft 22, which at its end projecting into the inner space of the high-pressure collecting space 1 is formed with a thrust bearing 27 for receiving a spring body 25.
- the closing element 19 is connected to the shaft 22, which serves as a retaining bolt, via a locking ring 24.
- At least one throttle-like return flow opening 20 is formed, which allows fuel to flow back when the pressure waves return to the high-pressure collection chamber 1 and thus back-flow of fuel via the high-pressure line connection 15 via its longitudinal bore 16 into the interior of the high-pressure collection room 1 allowed without this - caused essentially by the throttling action of the backflow opening 20 - by high pressure peaks.
- the closing element 19 is essentially a disk-like embodiment and the shaft 22 serving as a retaining bolt is two separate components which are captively connected to one another via a circlip or a differently designed fastening element 24 ,
- the abutment 27 formed at the lower end of the shaft 22 serving as a retaining bolt supports one turn of a spring body 25.
- the spring body 25 is supported in accordance with its conical contour 26 with a larger diameter on the inner wall 2 of the high-pressure accumulation chamber 1, compared to the diameter with which the spring body 25 on the abutment 27 in the lower region of the one serving as a retaining bolt Shaft 22 is added.
- the conical contour 26 of the spring body 25 also facilitates the assembly of the spring body 25 through the bore in the wall 7 of the high-pressure collecting space, which runs coaxially to the vertical axis 5 of the high-pressure collecting space 1.
- a corresponding number of vibration damping valves 19, 22, 25 is arranged along the longitudinal direction 6 of the high-pressure collecting space 1 depending on the number of high-pressure line connections 15, which is used according to the number of cylinders of the internal combustion engine to be supplied with fuel, all of which are independent of one another by individual ones Federkö ⁇ er 25 with a conical contour 26 to simplify assembly in the interior of the high-pressure chamber 1, are biased.
- the spring element that applies the closing force of the vibration damping valve according to the embodiment variant in FIG. 1 is integrated into the interior of the high-pressure collecting space, so that existing interfaces such as e.g. the inside diameter of the high-pressure collecting space 1, the sealing point to the high-pressure line connection 15 and the attachment of the high-pressure line to the high-pressure line connection 15 can be maintained unchanged.
- the closing element 19 according to the solution of the vibration damping valve proposed according to the invention is placed directly on the sealing point 23, 28 below the high-pressure line connection 15.
- the connection of the closing element 19 and the shaft 22 serving as a retaining bolt can be achieved either by a fastening element 24 designed as a circlip or by welding, cabinets , Crushing and similar joining techniques can be made.
- the shaft 22 and the spring body 25 provided with a conical contour 26 are mounted from the outside through the bore running coaxially to the vertical axis 5. If, for reasons of space or for reasons of assembly, the shank 22 serving as a retaining bolt is longer than necessary later on, it can be shortened after the assembly (compare dashed representation of the shank 22 within the longitudinal bore 16 in FIG. 1).
- FIG. 2 shows a further embodiment variant of the vibration damping valve proposed according to the invention with an alternative spring body geometry, the spring element being formed in one piece.
- connection piece 9 for the connection of the high-pressure line via the screw-in connection 11 and the fastening of the high-pressure line connection 15 to the outer wall 3 of the high-pressure collection space 1
- the closing element 19 and the shaft 22 serving as a retaining bolt are formed in one piece.
- a thickening 34 is formed, which serves as a support point for a pair of spring tongues 32, 33.
- the one-piece spring body 30 according to the embodiment variant of the vibration damping valve in FIG.
- the second spring tongue 33 is configured as a U-profile which is open to the interior of the high-pressure collection chamber.
- the spring tongues 32 and 33 which extend on both sides of the shaft 22 of the vibration damping valve that extends into the interior of the high-pressure collection chamber 1, can be punched out or bent out in a particularly simple manner in terms of production technology.
- the spring tongue ends 57 of the first spring tongue 32 and the second spring tongue 33 are based on a widening of the extension 34 in the lower region of the shaft 22.
- the first spring tongue 32 or the second spring tongue 33 can be provided with an S-shaped profile 37 to improve the spring action.
- the one-piece spring body 30 By supporting the first spring tongue or the second spring tongue 33 on the abutment 34, the one-piece spring body 30 is brought about to effect a sealing seat 31 on the upper region of the inner wall 2 of the high-pressure collecting space 1.
- the one-piece spring body 30 is therefore mounted to be movable relative to the shaft 22 of the vibration damping valve according to the embodiment variant shown in FIG.
- the breakout points at which the spring tongues 32, 33 are bent out in the direction of the open side of the one-piece spring body formed as a U-profile are identified by reference numeral 36.
- the closing element 19 of the vibration damping valve in the embodiment according to FIG. 2 can also be provided with a non-return opening 20 on the side of the circumference analogously to the design of the closing element 19 according to the embodiment variant of the solution according to the invention shown in FIG.
- all the spring elements are accordingly connected to one another as seen in the longitudinal direction 6 of the high-pressure collecting space 1.
- the one-piece spring body 30 is inserted during assembly in the axial direction, ie in the direction of the longitudinal axis 6 in the interior of the high-pressure collecting space 1.
- the one-piece spring body 30 can be formed into an axial length that is specifically matched to the overall length of the high-pressure collecting chamber 1, whereby type-specific one-piece spring bodies 30 are set, depending on the number of cylinders of the internal combustion engine to be supplied with fuel by the high-pressure collecting chamber 1 and depending on the distance of the high-pressure connections 15 in the longitudinal direction of the high-pressure collecting space 1.
- the one-piece spring body 30 When mounting in the interior of the high-pressure collecting space 1, the one-piece spring body 30 is inserted in the longitudinal direction in the interior of the high-pressure inserted collection space, the spring tongues 32, 33, which have an S-shaped course 37, can be pushed back by means of an auxiliary tool and on the shaft 22, which protrude at intervals from one another corresponding to the spacing of the high-pressure line connections 15 into the interior of the high-pressure collecting space 1 become.
- a sealing point 31 is formed, which effectively dampens the pressure waves or pressure wave reflections returning from the injector when an injection valve closes when pressure peaks occur inside the high-pressure collecting space 1 when entering via the axial bore below the closing element 19.
- the one-piece spring element 30 can, for. B. as a sheet profile made of steel with spring properties.
- the spring tongues 32, 33 can also be provided with a contour 37 other than an S-shaped contour in order to adjust the edges which bring about the sealing seat 31 on the inner wall 2 of the high-pressure collecting space guarantee. It is essential that the spring tongue ends 57 of the spring tongues 32, 33 lying opposite one another are supported on the abutment 34 at the lower end of the shaft 22, which penetrates the axial bore of the high-pressure collecting chamber, and thus both pull the closing element 19 into the seat 28 and also the sealing body 31 formed in one piece in this embodiment of the vibration damping valve proposed according to the invention in its sealing seat 31 in the upper region of the high-pressure plenum.
- FIG. 3 shows a further embodiment variant of the vibration damping valve proposed according to the invention, which can be mounted in the axial direction in the high-pressure collecting chamber (common rail).
- a closing element 19 is located above a bore in the wall 7 of the high-pressure collecting chamber 1, from which a shaft 22 serving as a retaining bolt is located in the interior of the high-pressure collecting chamber 1 extends.
- the shaft 22 is enclosed by a guide 43, which can be designed to project partially into the interior of the high-pressure collecting space 1, that is to say over the inner wall 2 thereof.
- the closing element 19 of the variant of the vibration damping valve shown in FIG. 3 can also be provided on its outer circumference with at least one return flow opening. be provided 20, which acts as a throttle.
- the lower end of the shaft 22, which protrudes into the interior of the high-pressure plenum 1, carries, as shown in FIGS. 1 and 2, an abutment 34, on which, in this embodiment variant, a ring-shaped, one-piece spring body 40 is supported.
- the one-piece, ring-shaped spring body 30 extends in a ring along the wall 2 of the high-pressure plenum 1 and encompasses the area of each high-pressure connection 15 via the slotted spring arms 42, seen in the direction of the longitudinal axis 6 of the high-pressure plenum 1, the ends 57 of which above the abutment 34 Support the lower end of the shaft 22.
- the slotted spring arms 42 merge into an annular section 41, the lateral surface of which is designed in accordance with the contour of the inner wall 2 of the high-pressure plenum 1.
- the ring-shaped, one-piece spring body 40 is designed to spring over.
- the slotted spring arms 42 can be bent in the direction of the two arrows shown in FIG. 3, so that the spring body, ie the ends 57 of the slotted spring arms 42 above the abutment 34 at the bottom Can snap end of the shaft 22.
- the guide 43 by which the shaft 22 is enclosed, facilitates the assembly, wherein the guide 43 can be arranged as three or more on the shaft 22 offset from one another by 120.degree. C. or offset by 90.degree to facilitate the annular, one-piece spring body 40.
- each of the 4, 6 or 8 fuel injectors can be used to terminate their injection processes with regard to pressure waves or pressure wave reflections via the respective high-pressure lines to the high-pressure connections 15 of the high-pressure plenum 1 run back, which can lead to a pressure peak in the interior of the high-pressure plenum 1 (common rail).
- the vibration damping valve proposed according to the invention in accordance with the sketched embodiment variant in FIGS. 1, 2 or 3, the mechanical Effects of pressure peaks returning to the high-pressure collection space can be reduced by backflow openings 20 ii upper area of the closing element 19, since the at least one backflow opening 20 provided on the outer contour of the seat 23, 28 acts as a throttle.
- FIG. 4 shows a perspective view of a one-part closing element for integration into the high-pressure collection chamber, which is essentially of tubular cross section and has spring tongues punched out.
- the one-piece spring body 30 shown in FIG. 4 extends over an axial length 50, which corresponds to the length of the high-pressure collecting space 1, in which the one-piece spring body 30 is inserted in the axial direction correspondingly from its longitudinal axis 6.
- spring tongues 32 and 33 are punched out in the one-piece spring body 30.
- These spring tongues rest with their ends 57 above the abutment 34 (see illustration according to FIG. 3) and thus press the sealing edges 54 against the angled corners of the one-piece spring element designed as a U-profile 55 against the inner wall 2 of the high-pressure collecting space 1 (see illustration according to FIG Figure 2.
- the side surfaces of the one-piece spring body 30 obtained as a U-profile 55 are identified by reference numerals 52 and 53 and shorter than the web connecting the side surfaces 52 and 53 to one another.
- the spring tongues 32 and 33 which can run in an S-shaped contour 37 or can have a contour that enables another resilient setting, are supported with their spring tongue ends 57 on the abutment 34 and thus form a sealing seat on the upper side of the high-pressure plenum chamber 1 in each case High-pressure line connection 15.
- the one-piece spring body 30 can be formed in a type-specific length 50, the distance 56 and the number of punching points 51 for the downwardly extending spring tongues 32 and 33 according to FIG
- the number of vibration damping valves is directed, ie according to the number of high-pressure line connections 15, which are each formed on the upper side of wall 7 of high-pressure collecting chamber 1 in the embodiment variants of the vibration damping valve shown in FIGS. 1, 2 and 3. 1021
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10212876A DE10212876A1 (en) | 2002-03-22 | 2002-03-22 | Device for vibration damping in fuel injection systems with a high-pressure plenum |
DE10212876 | 2002-03-22 | ||
PCT/DE2002/004567 WO2003081021A1 (en) | 2002-03-22 | 2002-12-13 | Device for damping vibrations on fuel injection systems having a high-pressure accumulating space |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1490591A1 true EP1490591A1 (en) | 2004-12-29 |
EP1490591B1 EP1490591B1 (en) | 2005-07-13 |
Family
ID=28050765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02798274A Expired - Lifetime EP1490591B1 (en) | 2002-03-22 | 2002-12-13 | Device for damping vibrations on fuel injection systems having a high-pressure accumulating space |
Country Status (5)
Country | Link |
---|---|
US (1) | US7040292B2 (en) |
EP (1) | EP1490591B1 (en) |
JP (1) | JP4177268B2 (en) |
DE (2) | DE10212876A1 (en) |
WO (1) | WO2003081021A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4357362B2 (en) * | 2004-05-19 | 2009-11-04 | 臼井国際産業株式会社 | Joint structure of branch connection for common rail |
DE102005026993A1 (en) * | 2005-06-10 | 2006-12-14 | Robert Bosch Gmbh | High-pressure storage chamber body with high-pressure throttles |
FR2889729B1 (en) * | 2005-08-09 | 2007-10-19 | Usui Kokusai Sangyo Kk | JOINT STRUCTURE OF CONNECTING CONNECTOR FOR COMMON RAIL |
JP5455013B2 (en) * | 2009-03-24 | 2014-03-26 | 臼井国際産業株式会社 | High pressure fuel injection pipe having connecting head and method of manufacturing the same |
DE102018204702A1 (en) * | 2018-03-28 | 2019-10-02 | Robert Bosch Gmbh | Fuel distributor for internal combustion engines |
DE102018207760A1 (en) * | 2018-05-17 | 2019-11-21 | Robert Bosch Gmbh | Fuel distributor for internal combustion engines |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4336781A (en) * | 1980-04-28 | 1982-06-29 | Stanadyne, Inc. | Fuel injection pump snubber |
DE3341575C2 (en) * | 1983-11-17 | 1996-06-05 | Bosch Gmbh Robert | Pressure valve for fuel injection pumps |
US4964391A (en) * | 1989-05-30 | 1990-10-23 | Walbro Corporation | Check valve for engine fuel delivery systems |
DE69218326T2 (en) * | 1991-01-14 | 1997-08-28 | Denso Corp | PRESSURE ACCUMULATING FUEL INJECTOR |
GB9416798D0 (en) * | 1994-08-19 | 1994-10-12 | Lucas Ind Plc | Delivery valve |
DE69619949T2 (en) * | 1995-12-19 | 2002-11-14 | Nippon Soken | Reservoir fuel injection device |
DE19706591A1 (en) * | 1997-02-20 | 1998-08-27 | Bosch Gmbh Robert | Pressure valve |
IT1306311B1 (en) * | 1998-07-01 | 2001-06-04 | Magneti Marelli Spa | COUPLING SYSTEM BETWEEN ENGINE HEAD, INJECTOR AND FUEL COLLECTOR. |
JP4093387B2 (en) * | 1999-08-24 | 2008-06-04 | ヤマハマリン株式会社 | Fuel injection engine |
US6463909B2 (en) * | 2000-01-25 | 2002-10-15 | Usui Kokusai Sangyo Kaisha Limited | Common rail |
JP4061803B2 (en) * | 2000-01-26 | 2008-03-19 | 株式会社デンソー | Accumulated fuel injection system |
US6830034B2 (en) * | 2000-02-07 | 2004-12-14 | Siemens Automotive Corporation | Fuel injector and fuel rail check valves |
JP2002371941A (en) * | 2001-06-18 | 2002-12-26 | Denso Corp | Fuel injection pump |
-
2002
- 2002-03-22 DE DE10212876A patent/DE10212876A1/en not_active Withdrawn
- 2002-12-13 WO PCT/DE2002/004567 patent/WO2003081021A1/en active IP Right Grant
- 2002-12-13 DE DE50203648T patent/DE50203648D1/en not_active Expired - Lifetime
- 2002-12-13 EP EP02798274A patent/EP1490591B1/en not_active Expired - Lifetime
- 2002-12-13 US US10/508,552 patent/US7040292B2/en not_active Expired - Fee Related
- 2002-12-13 JP JP2003578727A patent/JP4177268B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03081021A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20050178363A1 (en) | 2005-08-18 |
DE10212876A1 (en) | 2003-10-23 |
WO2003081021A1 (en) | 2003-10-02 |
EP1490591B1 (en) | 2005-07-13 |
DE50203648D1 (en) | 2005-08-18 |
US7040292B2 (en) | 2006-05-09 |
JP4177268B2 (en) | 2008-11-05 |
JP2005520979A (en) | 2005-07-14 |
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