EP1370762B1 - Kraftstoffeinspritzeinrichtung - Google Patents
Kraftstoffeinspritzeinrichtung Download PDFInfo
- Publication number
- EP1370762B1 EP1370762B1 EP02727209A EP02727209A EP1370762B1 EP 1370762 B1 EP1370762 B1 EP 1370762B1 EP 02727209 A EP02727209 A EP 02727209A EP 02727209 A EP02727209 A EP 02727209A EP 1370762 B1 EP1370762 B1 EP 1370762B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- fuel
- injector
- injection device
- 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
Links
Images
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
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding 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
- 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
- F02M47/04—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure using fluid, other than fuel, for injection-valve actuation
- F02M47/043—Fluid pressure acting on injection-valve in the period of non-injection to keep it closed
-
- 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
- F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
-
- 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
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
Definitions
- the invention relates to a fuel injection device according to the preamble of claim 1
- the fuel injection according to the invention can be both stroke controlled as well as pressure controlled.
- a stroke-controlled fuel injection that the opening and closing of the injection opening by means of a sliding Valve member due to the hydraulic interaction of the pressures in one Nozzle space and takes place in a control room.
- a pressure drop within the Control chamber causes a stroke of the valve member.
- the deflecting of the valve member by an actuator actuator, actuator
- a pressure controlled fuel injection is characterized by in the Nozzle chamber of an injector prevailing fuel pressure the valve member against the Action of a closing force (spring) moves, so that the injection port for a Injection of the fuel from the nozzle chamber is released into the cylinder.
- the pressure with the fuel from the nozzle chamber into a cylinder one Internal combustion engine outlet, referred to as injection pressure, while under a system pressure the pressure is understood to be below the fuel within the pressure
- Fuel injection device is available or stockpiled.
- Fuel metering means a defined amount of fuel for injection provide. Leakage is an amount of fuel to be understood during the event Operation of the fuel injector occurs (e.g., a pilot leak), not used for injection and fed back to the fuel tank. The Pressure level of this leakage may have a stand pressure, the Fuel is then relaxed to the pressure level of the fuel tank.
- the fuel pressure of the hydraulic oil operated pressure booster (1st system pressure)
- another 2nd (lower) fuel system pressure generated for injection can be used.
- the 2nd system pressure is in one if necessary Accumulator stored and is constantly on the injector. It can be one flexible Einspritzverlaufsformung and a multiple injection shown become. For generating a separate high pressure pump can be used. But it is also possible, the fuel pressure with a central pressure booster to create.
- the 2nd system pressure can also be stored a subset of the fuel compressed by the DV.
- the fuel pressure is set higher than the oil pressure in the accumulator chamber then acts on a piston of the local pressure booster a hydraulic Restoring force.
- the necessary return spring can be reduced or even omitted. This results in a large space advantage, especially at Integration of the booster in the injector is important.
- a supply container 2 for a working medium for example hydraulic oil
- a reservoir 3 is used for fuel.
- a high-pressure pump 4 conveys the working fluid hydraulic oil into a central pressure storage chamber 5, in which the hydraulic oil is compressed and stored at an adjustable system pressure of approximately 50 bar to 250 bar. By the pressure storage chamber 5 so a working medium high pressure source is provided.
- a low-pressure fuel pump 6 delivers fuel 3 via a supply line 7 into a pressure chamber 8 of a pressure booster 9.
- Each injector 10 is assigned a local pressure booster 9.
- the control of the pressure booster 9 can be carried out by a supply line 12 can be connected to a primary chamber 13 of the booster 9 either to an oil return 14 or to the pressure storage chamber 5.
- the pressure chamber 8 is connected via a check valve 15 with a nozzle chamber 16 of the injector 10, so that a pressure build-up in the nozzle chamber 16 can take place.
- a connected to the accumulator chamber 5 control chamber 17 of the injector 10 can be connected by means of a 2/2-way valve 18 and a pressure relief throttle 19 with an oil return 20 , so that the pressure in the control chamber 17 can be influenced.
- the injection takes place via a fuel metering with the aid of a nozzle needle 21, which is axially displaceable in a guide bore and which cooperates with a valve seat surface on the injector housing of the injector 10.
- a pressure surface pointing in the opening direction of the nozzle needle 21 is exposed to the pressure prevailing there, which is supplied to the nozzle chamber 16 via the feed line 22 .
- Coaxial with a valve spring 23 also engages the nozzle needle 21 to a pressure piece 24 , which limits the control chamber 17.
- the control chamber 17 has from the fuel pressure port ago an inlet with a first throttle 25 and a drain over the oil return 20 and the 2/2-way valve 18th
- the nozzle chamber 16 is placed over an annular gap between the nozzle needle 21st and the guide bore continues to the valve seat surface of the injector housing. about the pressure in the control chamber 17, the pressure piece 24 in the closing direction pressurized.
- the control of the injector 10 is hydraulically by the interaction of the Pressures in the nozzle chamber 16 and in the control chamber 17 (with appropriate design the pressure surfaces).
- the valve 18 When the valve 18 is open, the pressure in the control chamber 17 and the nozzle needle 21 releases the injection openings.
- the injection begins. at closed valve 18 is built in the control chamber 17 again a rail pressure and the nozzle needle 21 closes the injection opening.
- each injector 10 is assigned a respective local pressure booster 9.
- the pressure booster 9 comprises the 3/2-way valve 11 for driving, a check valve and a piston 26.
- the movable piston 26 separates the connectable to the pressure accumulator 5 primary chamber 13 of a connected to the at least one injector 10 and filled with fuel pressure chamber 8.
- the piston 26 can be pressurized at one end.
- a differential space 27 is depressurized by means of a leakage line, so that the piston 26 can be moved to reduce the volume of the pressure chamber 8.
- the piston 26 is moved in the compression direction, so that the fuel in the pressure chamber 8 is compressed and the control chamber 17 and a nozzle chamber 16 is supplied.
- a check valve prevents the return of compressed fuel into the fuel tank.
- a suitable area ratio in the primary chamber 13 and the pressure chamber 8 an increased pressure can be generated. If the primary chamber 13 is connected by means of the valve 11 to the leakage line 14, the return of the piston 26 and the refilling of the pressure chamber 8 takes place.
- one or more springs can be provided. By means of the pressure intensification thus a first fuel system pressure will be generated.
- the nozzle chamber 16 and a local pressure accumulator space 28 remain under pressure when the pressure intensifier is relieved of pressure by valve 11. This is a constant fuel pressure at the injector 10. An injection at any time is possible, even if the pressure booster 9 is not activated and thus compresses no fuel in the compression chamber 8. A second low fuel system pressure is generated which can be used for injection. If necessary, the pressure level in the pressure storage chamber 28 can be adjusted to a desired pressure by means of a pressure relief valve 29 . The pressure in the accumulator chamber 28 can be reduced via the valve 29 to its opening pressure. Thus, preferably, a low pressure level of about 300 to 500 bar can be set. This can then be z. B.
- the size of the pressure storage chamber 28 must be designed according to the desired injection curve.
- the local pressure storage space is used only for a small pre-injection and a short boot phase. Then it can be very small and possibly represented by the existing lines and rooms.
- FIG. 3 shows another control of the pressure booster 9 with a 2/2-way valve 31 in a fuel injector 32 .
- the piston 26 is not completely hydraulically pressure compensated in the deactivated state when resetting. An increased spring force compensates for this.
- a second (lower) fuel system pressure is provided which provides a baseline fuel pressure in the system.
- the second fuel system pressure is generated by a high-pressure fuel pump 39 . If required, this second fuel system pressure can be stored in a central pressure accumulator 33.
- the second fuel system pressure is to the pressure chamber 8 and the nozzle chamber 16th connected.
- the nozzle chamber 16 is therefore always at fuel pressure applied.
- This fuel pressure can be used for an injection at any time can be used and can thus be used e.g. for a pre-injection or a boot phase to be used.
- a pressure control may be provided for pressure accumulator 33. Will the 2. System pressure selected higher than the oil pressure of the working fluid, then learns the Piston a hydraulic restoring force and it can with space problems on a return spring can be dispensed with.
- a fuel injection device 35 according to FIG. 5 corresponds to that in FIG. 4. Instead of the hydraulic oil, fuel is used to control the injector 10.
- a central pressure booster 36 can also be used (fuel injection device 37 of FIG. 6 ).
- a pressure storage space 33 can also be used for pressure control and / or vibration damping.
- Fig. 7 shows a further circuit possibility, wherein the 3/2-way valve 11 is provided for controlling the pressure booster 9 of a fuel injection device 38 having a central pressure storage space 33.
- the piston experiences a hydraulic restoring force and it can be dispensed with space problems on a return spring.
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)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- die Verwendung von Hydrauliköl zur Betätigung eines lokalen Druckverstärkers und zur Ansteuerung eines Injektors;
- Fig. 2
- die Verwendung von Hydrauliköl zur Betätigung des lokalen Druckverstärkers und von Kraftstoff zur Ansteuerung des Injektors;
- Fig. 3
- eine andere Ansteuerung des Druckverstärkers bei Verwendung von Hydrauliköl zur Betätigung des lokalen Druckverstärkers und zur Ansteuerung des Injektors;
- Fig.4
- die Verwendung von Hydrauliköl zur Betätigung des lokalen Druckverstärkers und zur Ansteuerung des an einen zentralen Druckspeicherraum angeschlossenen Injektors;
- Fig. 5
- die Verwendung von Hydrauliköl zur Betätigung des lokalen Druckverstärkers und von Kraftstoff zur Ansteuerung des an einen zentralen Druckspeicherraum angeschlossenen Injektors;
- Fig. 6
- die Verwendung eines zentralen Druckverstärkers;
- Fig. 7
- eine weitere Ansteuerung des lokalen Druckverstärkers.
Claims (7)
- Kraftstoffeinspritzeinrichtung (1; 30; 32; 34; 35; 37; 38) für Brennkraftmaschinen mit mindestens einem hubgesteuerten Injektor (10), wobei zwischen dem mindestens einen Injektor (10) und einer Arbeitsmedium-Hochdruckquelle (5) ein einen beweglichen Kolben (26) aufweisender, dem Injektor (10) zugeordneter lokaler Druckverstärker (9) geschaltet ist, wobei der bewegliche Kolben (26) eine an die Arbeitsmedium-Hochdruckquelle (5) anschließbare Primärkammer (13) von einer mit dem mindestens einen Injektor (10) verbundenen und mit Kraftstoff gefüllten Druckkammer (8) trennt, wobei der Druckverstärker (9) einen ersten Kraftstoff-Systemdruck im Injektor (10) erzeugt, der zur Einspritzung verwendet wird, dadurch gekennzeichnet, dass die Kraftstoffeinspritzeinrichtung (1; 30; 32; 34; 35; 37; 38) Mittel zur Bereitstellung eines weiteren, zweiten Kraftstoff-Systemdrucks aufweist, welche zur Einspritzung ohne Aktivierung des Druckverstärkers (9) verwendet werden können.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass Mittel zur Erzeugung des zweiten Kraftstoff-Systemdrucks aus dem vom Druckverstärker (9) komprimierten ersten Kraftstoff-Systemdruck vorgesehen sind.
- Kraftstoffeinspritzeinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass separate lokale Speicher zur Bereitstellung des zweiten Kraftstoffdrucks für jeden Injektor (10) vorgesehen sind.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Mittel zur Bereitstellung des zweiten Kraftstoffdrucks gemeinsam für alle Injektoren (10) vorgesehen sind.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass ein zentraler Speicher für den zweiten Kraftstoffdruck vorgesehen ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass eine Hochdruckpumpe zur Erzeugung des zweiten zentralen Kraftstoffdrucks vorgesehen ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass ein Druckverstärker zur Erzeugung des zweiten Kraftstoffdrucks vorgesehen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10112154 | 2001-03-14 | ||
DE10112154A DE10112154A1 (de) | 2001-03-14 | 2001-03-14 | Kraftstoffeinspritzeinrichtung |
PCT/DE2002/000860 WO2002073024A1 (de) | 2001-03-14 | 2002-03-12 | Kraftstoffeinspritzeinrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1370762A1 EP1370762A1 (de) | 2003-12-17 |
EP1370762B1 true EP1370762B1 (de) | 2005-08-17 |
Family
ID=7677361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02727209A Expired - Lifetime EP1370762B1 (de) | 2001-03-14 | 2002-03-12 | Kraftstoffeinspritzeinrichtung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6814057B2 (de) |
EP (1) | EP1370762B1 (de) |
JP (1) | JP2004518872A (de) |
DE (2) | DE10112154A1 (de) |
WO (1) | WO2002073024A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE390555T1 (de) * | 2003-06-20 | 2008-04-15 | Delphi Tech Inc | Kraftstoffsystem |
JP4088600B2 (ja) * | 2004-03-01 | 2008-05-21 | トヨタ自動車株式会社 | 増圧式燃料噴射装置の補正方法 |
DE102004010760A1 (de) * | 2004-03-05 | 2005-09-22 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit Nadelhubdämpfung |
DE102004053422A1 (de) * | 2004-11-05 | 2006-05-11 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung |
JP5120655B2 (ja) * | 2005-07-18 | 2013-01-16 | ガンサー−ハイドロマグ アーゲー | 内燃機関用の蓄圧式噴射システム |
US20080047527A1 (en) * | 2006-08-25 | 2008-02-28 | Jinhui Sun | Intensified common rail fuel injection system and method of operating an engine using same |
US7717359B2 (en) | 2007-05-09 | 2010-05-18 | Sturman Digital Systems, Llc | Multiple intensifier injectors with positive needle control and methods of injection |
NL2002384C2 (nl) | 2008-03-03 | 2011-04-04 | Vialle Alternative Fuel Systems Bv | Inrichting en werkwijze voor een verbrandingsmotor met directe inspuiting met twee brandstoffen. |
US20100012745A1 (en) * | 2008-07-15 | 2010-01-21 | Sturman Digital Systems, Llc | Fuel Injectors with Intensified Fuel Storage and Methods of Operating an Engine Therewith |
EP2341234A3 (de) * | 2009-12-31 | 2012-02-22 | Indopar B.V. | Direkteinspritzungs-Zweifachbrennstoffsystem für Verbrennungsmotoren |
NL2006992C2 (en) | 2011-06-24 | 2013-01-02 | Indopar B V | Method of switching from a liquefied gas fuel to a liquid fuel being provided to a direct injection combustion engine, and direct injection bi-fuel system for such an engine. |
KR20130027996A (ko) * | 2011-09-08 | 2013-03-18 | 바르질라 스위츠랜드 리미티드 | 내연기관용 연료 분사 시스템, 연료 분사 방법 및 내연기관 |
US9181890B2 (en) | 2012-11-19 | 2015-11-10 | Sturman Digital Systems, Llc | Methods of operation of fuel injectors with intensified fuel storage |
JP6562028B2 (ja) * | 2017-04-11 | 2019-08-21 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
DE102016105625B4 (de) * | 2015-03-30 | 2020-10-08 | Toyota Jidosha Kabushiki Kaisha | Kraftstoffeinspritzvorrichtung für Brennkraftmaschine |
US10738749B1 (en) | 2019-01-18 | 2020-08-11 | Pratt & Whitney Canada Corp. | Method of using heat from fuel of common-rail injectors |
US10865728B2 (en) * | 2019-01-18 | 2020-12-15 | Pratt & Whitney Canada Corp. | Method of using backflow from common-rail fuel injector |
DE102021200154A1 (de) * | 2021-01-11 | 2022-07-14 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoffeinspritzvorrichtung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5655769U (de) * | 1979-10-05 | 1981-05-14 | ||
JPS57124073A (en) * | 1981-01-24 | 1982-08-02 | Diesel Kiki Co Ltd | Fuel injection device |
JPH0199948U (de) * | 1987-12-24 | 1989-07-05 | ||
CH689281A5 (de) * | 1994-02-03 | 1999-01-29 | Christian Dipl-Ing Eth Mathis | Kraftstoffeinspritzanlage fuer eine Brennkraftmaschine, insbesondere fuer einen Dieselmotor, sowie ein Verfahren zur Ueberwachung derselben. |
JP2885076B2 (ja) * | 1994-07-08 | 1999-04-19 | 三菱自動車工業株式会社 | 蓄圧式燃料噴射装置 |
US5931139A (en) * | 1997-10-14 | 1999-08-03 | Caterpillar Inc. | Mechanically-enabled hydraulically-actuated electronically-controlled fuel injection system |
US6092509A (en) * | 1998-11-19 | 2000-07-25 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Accumulator type fuel injection system |
DE19910970A1 (de) * | 1999-03-12 | 2000-09-28 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
DE19939421A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Kombiniertes hub-/druckgesteuertes Kraftstoffeinspritzverfahren und -system für eine Brennkraftmaschine |
DE19939420B4 (de) * | 1999-08-20 | 2004-12-09 | Robert Bosch Gmbh | Kraftstoffeinspritzverfahren und -system für eine Brennkraftmaschine |
DE19939422A1 (de) * | 1999-08-20 | 2001-03-01 | Bosch Gmbh Robert | Kraftstoffeinspritzsystem für eine Brennkraftmaschine |
DE10065103C1 (de) * | 2000-12-28 | 2002-06-20 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung |
-
2001
- 2001-03-14 DE DE10112154A patent/DE10112154A1/de not_active Ceased
-
2002
- 2002-03-12 US US10/276,148 patent/US6814057B2/en not_active Expired - Fee Related
- 2002-03-12 DE DE50203953T patent/DE50203953D1/de not_active Expired - Lifetime
- 2002-03-12 WO PCT/DE2002/000860 patent/WO2002073024A1/de active IP Right Grant
- 2002-03-12 EP EP02727209A patent/EP1370762B1/de not_active Expired - Lifetime
- 2002-03-12 JP JP2002572258A patent/JP2004518872A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
US20030183198A1 (en) | 2003-10-02 |
DE10112154A1 (de) | 2002-09-26 |
EP1370762A1 (de) | 2003-12-17 |
US6814057B2 (en) | 2004-11-09 |
WO2002073024A1 (de) | 2002-09-19 |
DE50203953D1 (de) | 2005-09-22 |
JP2004518872A (ja) | 2004-06-24 |
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