EP0893582A2 - Verfahren zur Steuerung einer Kühlmittelpumpe einer Brennkraftmaschine - Google Patents
Verfahren zur Steuerung einer Kühlmittelpumpe einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0893582A2 EP0893582A2 EP98890207A EP98890207A EP0893582A2 EP 0893582 A2 EP0893582 A2 EP 0893582A2 EP 98890207 A EP98890207 A EP 98890207A EP 98890207 A EP98890207 A EP 98890207A EP 0893582 A2 EP0893582 A2 EP 0893582A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant pump
- electric motor
- pump
- signal
- speed
- 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
- 239000002826 coolant Substances 0.000 title claims abstract description 43
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/14—Safety means against, or active at, failure of coolant-pumps drives, e.g. shutting engine down; Means for indicating functioning of coolant pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
- F01P2031/36—Failure of coolant pump
Definitions
- the invention relates to a method for controlling a coolant pump of an internal combustion engine, the amount of heat to be removed from at least one engine operating parameter determined and by means of pulse width modulation a control signal for the target speed of the Coolant pump is generated depending on the amount of heat to be dissipated. Furthermore, the invention relates to an electrically driven coolant pump for an internal combustion engine, with an electric motor pump unit and an electronic control unit for determination a pulse width modulated control signal for the pump depending at least an engine operating parameter.
- DE 37 38 412 A1 describes a coolant system for an engine with two electrical and a mechanical coolant pump.
- the electric coolant pumps are controllable via an electronic switching device. If a coolant pump fails, a Emergency operation initiated to maintain an emergency operation of the engine. This is after a corresponding warning signal has been issued or an intervention in the engine management system engine operation with reduced power possible.
- DE 38 10 174 A1 describes a device for regulating the coolant temperature Internal combustion engine described, the control of the coolant temperature depending the load and the speed of the internal combustion engine. There are no suggestions too remove an emergency program for the coolant pump in the event of malfunctions in pump operation perform.
- control unit with an error detector to detect abnormal control signals and pump operating conditions and with one Speed controller for the pump speed is connected, the error detector being an emergency device for the coolant pump.
- the control unit uses sensors to determine and dissipate the amount of heat to be dissipated a pulse-width-modulated signal for the setpoint speed of the coolant pump depending the amount of heat to be dissipated.
- the signal is then compared for errors by comparison checked with a predefined target signal range. If an incorrect value is found An emergency program for the coolant pump is started in the signal, which is sufficient Cooling of the engine ensured. If no faulty value of the signal is found, the signal is fed as a setpoint to the speed controller, and the speed of the Coolant pump shut down. These steps are carried out continuously or at predefined intervals repeated.
- the emergency program provides that the coolant pump with which the highest cooling capacity is operated in continuous operation, it is advantageous if the emergency device is a short-circuit for an emergency control signal of the electric motor.
- the error detector with a Hall sensor is connected to the electric motor pump unit.
- the coolant pump is monitored at least during the starting process for getting stuck and in the event If you get stuck, a breakaway program is activated.
- the emergency program provides that the dry run and / or mechanical overload of the Electric motor is switched off for a predefined period of time.
- the electronic circuits for generation the control signal on the one hand and for speed control and error detection on the other are arranged spatially separated, preferably the error detector and the speed controller are integrated in the electric motor pump unit.
- the electric motor 1 of the motor-pump unit 2, equipped with a winding protection contact, is supplied with current I via a gate 3.
- the gate 3 receives the control voltage U of a speed controller 4, to which n due to a speed setpoint a voltage reference U soll generated.
- a speed actual value n is fed back to the speed controller 4 via a Hall probe 5. Should the difference between n and n is a new command value U to be formed.
- the speed setpoint n target is determined on the basis of a pulse width modulated control signal PWM generated by an electronic control unit 6 having a pulse width modulator.
- the control unit 6 can be integrated in the engine management of the internal combustion engine.
- the control unit 6 calculates the required heat dissipation on the basis of engine operating parameters of the internal combustion engine, such as coolant temperature, crankshaft speed, cylinder pressure or the like, and generates the pulse-width-modulated signal PWM therefrom, which is supplied to the speed controller 4 as the speed setpoint n target.
- the signal PWM is also connected to a voltage level 30 ("pull-up terminal").
- the pulse width modulated signal PWM and the speed reference value determined therefrom further the diagnostic part 1 is supplied to an error detector 7, which moreover, the actual speed is still n of the Hall probe 5, as well as a shunt 8 and a digital / analog converter 9 is still a monitoring control voltage U k receives as a function of the control current 1.
- the error detector 7 checks in predefined by a clock 10 time periods, if any errors in the pulse width modulated signal PWM, n is the actual speed or the control voltage U present.
- the clock 10 is initiated and monitored via a monitoring circuit 11 and supplied with energy via a low-voltage source 12, which is connected to the ground 31 of the vehicle and the terminal 15 (positive pole) of the vehicle.
- An emergency device 7b of the error detector 7 is connected to a first short-circuit actuator 13 in connection, which occurs when the pulse width modulated signal PWM fails or faulty signal performs an emergency program and creates a short circuit while supplying the electric motor 1 with the control voltage U which is the highest Cooling capacity enabled in continuous operation.
- seizure of the motor-pump unit 2 is determined via the emergency device 7b of the error detector 7 and the Hall transmitter 5.
- a breakaway program is started via the error detector 7, which modifies the control voltage in a suitable manner between a minimum and a maximum value via the actuators 13 and 14, so that the motor 1 generates a sufficiently high breakaway torque.
- a high breakaway torque is particularly possible when the electric motor 1 is a synchronous motor. This also simplifies control.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims (12)
- Verfahren zur Steuerung einer Kühlmittelpumpe einer Brennkraftmaschine, wobei die abzuführende Wärmemenge aus zumindest einem Motorbetriebsparameter bestimmt und mittels Pulsweitenmodulation ein Steuersignal für die Solldrehzahl der Kühlmittelpumpe in Abhängigkeit der abzuführenden Wärmemenge erzeugt wird, gekennzeichnet durch folgende Schritte:a) Überprüfen des Signals auf Fehler durch Vergleichen mit einem vordefinierten Sollsignalbereich,b) Durchführen eines Notfallprogrammes für die Kühlmittelpumpe, wenn in Schritt a) ein Fehlwert des Signals festgestellt wurde.c) Regelung der Drehzahl der Kühlmittelpumpe aufgrund des erzeugten Signales für die Solldrehzahl, wenn in Schritt a) kein Fehlwert des Signales festgestellt wurde.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Schritte a) bis c) in vordefinierten Abständen wiederholt werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Notfallprogramm vorsieht, daß die Kühlmittelpumpe mit der die höchste Kühlleistung im Dauerbetrieb ermöglichenden Drehzahl betrieben wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Notfallprogramm vorsieht, daß im Falle des Steckenbleibens der Kühlmittelpumpe ein Losbrechprogramm aktiviert wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Notfallprogramm vorsicht, daß bei Trockenlauf und/oder mechanischer Überlastung der Elektromotor für eine vordefinierte Zeitdauer abgeschaltet wird.
- Elektrisch angetriebene Kühlmittelpumpe für eine Brennkraftmaschine, mit einer Elektromotor-Pumpeneinheit (2) und einer elektronischen Steuereinheit (6) zur Erzeugung eines pulsweitenmodulierten Steuersignales (PWM) für die Pumpe in Abhängigkeit zumindest eines Motorbetriebsparameters, dadurch gekennzeichnet, daß die vorzugsweise in das Motormanagement integrierte Steuereinheit (6) mit einem Fehlerdetektor (7) zur Erkennung von abnormen Steuersignalen und Pumpenbetriebszuständen und mit einem Drehzahlregler (4) für die Pumpendrehzahl (n) verbunden ist, wobei der Fehlerdetektor (7) eine Notfallcinrichtung (7b) für die Kühlmittelpumpe aufweist.
- Kühlmittelpumpe nach Anspruch 6, dadurch gekennzeichnet, daß der Fehlerdetektor (7) und der Drehzahlregler (4) in die Elektromotor-Pumpeneinheit (2) integriert sind.
- Kühlmittelpumpe nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der Fehlerdetektor (7) mit einem Hall-Sensor (5) am Elektromotor (1) verbunden ist.
- Kühlmittelpumpe nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß die Notfalleinrichtung (7b) eine Kurzschlußschaltung (13) für ein Notsteuersignal des Elektromotors aufweist, um die Kühlmittelpumpe mit der die höchste Kühlleistung im Dauerbetrieb ermöglichenden Drehzahl betreiben zu können.
- Kühlmittelpumpe nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die Notfalleinrichtung (7b) eine Abschaltvorrichtung (14) aufweist, die bei Trockenlauf und/oder mechanischer Übersetzung den Elektromotor (1) für eine vordefinierte Zeitdauer abschaltet.
- Kühlmittelpumpe nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß die Notfalleinrichtung (7b) eine Losbrechschaltung aufweist, welche bei Steckenbleiben der Kühlmittelpumpe den Elektromotor (1) mit modulierten und/oder oszillierenden Steuersignalen versorgt.
- Kühlmittelpumpe nach einem der Ansprüche 6 bis 11, dadurch gekennzeichnet, daß der Elektromotor (1) ein synchronlaufender Motor ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT125197 | 1997-07-23 | ||
AT125197 | 1997-07-23 | ||
AT1251/97 | 1997-07-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0893582A2 true EP0893582A2 (de) | 1999-01-27 |
EP0893582A3 EP0893582A3 (de) | 2000-01-05 |
EP0893582B1 EP0893582B1 (de) | 2002-10-30 |
Family
ID=3509869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98890207A Expired - Lifetime EP0893582B1 (de) | 1997-07-23 | 1998-07-16 | Verfahren zur Steuerung einer Kühlmittelpumpe einer Brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6216645B1 (de) |
EP (1) | EP0893582B1 (de) |
AT (2) | AT502321B8 (de) |
DE (1) | DE59806097D1 (de) |
ES (1) | ES2183316T3 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19842167A1 (de) * | 1998-09-15 | 2000-03-16 | Wilo Gmbh | Füllstandserkennung im Kühlwasserkreislauf eines Verbrennungsmotors |
EP2065584A1 (de) * | 2007-11-30 | 2009-06-03 | Perkins Engines Company Limited | Kühlpumpenkavitationsschutzsystem |
DE102006057801B4 (de) * | 2006-12-06 | 2016-12-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Diagostizieren der Funktionsfähigkeit einer Kühlmittelpumpe |
DE102021118806B3 (de) | 2021-07-21 | 2022-10-13 | Pierburg Pump Technology Gmbh | Verfahren zur Steuerung einer elektrisch angetriebenen Fluidpumpe für ein Fahrzeug und eine elektrisch angetriebene Fluidpumpe für ein Fahrzeug |
DE102023126073A1 (de) * | 2023-09-26 | 2025-03-27 | Schaeffler Technologies AG & Co. KG | Verfahren zum Pumpenbetrieb, Fluidpumpe und Hydraulikvorrichtung |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10154926A1 (de) * | 2001-11-08 | 2003-05-22 | Daimler Chrysler Ag | Kühlmittelkreislauf für eine Brennkraftmaschine |
JP4557756B2 (ja) * | 2005-03-11 | 2010-10-06 | トヨタ自動車株式会社 | 電動機の冷却装置およびその制御方法並びに冷却装置の起動時の異常判定方法 |
US8997847B2 (en) | 2010-09-10 | 2015-04-07 | Ford Global Technologies, Llc | Cooling in a liquid-to-air heat exchanger |
JP6148787B2 (ja) * | 2014-03-06 | 2017-06-14 | 日立オートモティブシステムズ株式会社 | 内燃機関の制御装置及び冷却装置の制御方法 |
KR20160069097A (ko) * | 2014-12-05 | 2016-06-16 | 현대자동차주식회사 | 엔진의 전동식 워터펌프 진단방법 |
JP6819551B2 (ja) * | 2017-11-17 | 2021-01-27 | トヨタ自動車株式会社 | 冷却システム |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3738412A1 (de) | 1987-11-12 | 1989-05-24 | Bosch Gmbh Robert | Vorrichtung und verfahren zur motorkuehlung |
US4836147A (en) | 1987-12-14 | 1989-06-06 | Ford Motor Company | Cooling system for an internal combustion engine |
DE3810174A1 (de) | 1988-03-25 | 1989-10-05 | Hella Kg Hueck & Co | Einrichtung zur regelung der kuehlmitteltemperatur einer brennkraftmaschine, insbesondere in kraftfahrzeugen |
US5309730A (en) | 1993-05-28 | 1994-05-10 | Honeywell Inc. | Thermostat for a gas engine heat pump and method for providing for engine idle prior to full speed or shutdown |
US5529114A (en) | 1994-06-10 | 1996-06-25 | Northrop Grumman Corporation | Electric vehicle coolant pump assembly |
Family Cites Families (20)
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US3970907A (en) * | 1974-04-17 | 1976-07-20 | Hobart Corporation | Pulsating torque apparatus and method |
US4026480A (en) * | 1974-04-17 | 1977-05-31 | Hobart Corporation | Jam breaking method for comminuting device |
CA1066711A (en) * | 1974-08-26 | 1979-11-20 | Hoffmann-La Roche Limited | Thiophene derivatives |
US4506218A (en) * | 1981-01-12 | 1985-03-19 | Rotron Incorporated | Condition sensing arrangement for ac machines |
JPS57193716A (en) * | 1981-05-22 | 1982-11-29 | Mazda Motor Corp | Cooler for engine |
US4553187A (en) * | 1983-09-14 | 1985-11-12 | Allen-Bradley Company | Overcurrent detection device |
JPS6183423A (ja) * | 1984-09-29 | 1986-04-28 | Nissan Motor Co Ltd | 内燃機関の沸騰冷却装置におけるポンプ異常診断装置 |
US4669426A (en) * | 1986-01-29 | 1987-06-02 | Nissan Motor Co., Ltd. | Cooling system for automotive engine or the like |
DE3702947C2 (de) * | 1987-01-31 | 1995-02-23 | Behr Thomson Dehnstoffregler | Kühleinrichtung für eine Brennkraftmaschine |
DE3711392C1 (de) * | 1987-04-04 | 1989-01-12 | Behr Thomson Dehnstoffregler | Kuehleinrichtung fuer eine Brennkraftmaschine und Verfahren zur Steuerung einer solchen Kuehleinrichtung |
US4828088A (en) * | 1987-05-18 | 1989-05-09 | Eaton Corporation | Closed loop pulse modulated viscous fan control |
CA1304480C (en) * | 1987-12-28 | 1992-06-30 | Shuji Katoh | Engine room-cooling control system |
US5079488A (en) * | 1988-02-26 | 1992-01-07 | General Electric Company | Electronically commutated motor driven apparatus |
US4843288A (en) * | 1988-03-28 | 1989-06-27 | Rigidyne Corporation | Phase locked motor control system for multiple disk drive units |
DE4215266C1 (de) * | 1992-02-14 | 1993-04-29 | Grundfos A/S, Bjerringbro, Dk | |
US5390632A (en) * | 1992-02-19 | 1995-02-21 | Honda Giken Kogyo Kabushiki Kaisha | Engine cooling system |
US5577890A (en) * | 1994-03-01 | 1996-11-26 | Trilogy Controls, Inc. | Solid state pump control and protection system |
US5506484A (en) * | 1994-06-10 | 1996-04-09 | Westinghouse Electric Corp. | Digital pulse width modulator with integrated test and control |
US5627758A (en) * | 1994-06-10 | 1997-05-06 | Northrop Grumman Corporation | Vector control board for an electric vehicle propulsion system motor controller |
DE19539656A1 (de) * | 1995-10-25 | 1997-04-30 | Klein Schanzlin & Becker Ag | Verfahren zum Anlaufen drehzahlveränderlicher elektrischer Antriebe |
-
1998
- 1998-07-16 EP EP98890207A patent/EP0893582B1/de not_active Expired - Lifetime
- 1998-07-16 ES ES98890207T patent/ES2183316T3/es not_active Expired - Lifetime
- 1998-07-16 AT AT0801906A patent/AT502321B8/de not_active IP Right Cessation
- 1998-07-16 AT AT98890207T patent/ATE227001T1/de not_active IP Right Cessation
- 1998-07-16 DE DE59806097T patent/DE59806097D1/de not_active Expired - Lifetime
-
1999
- 1999-10-28 US US09/429,318 patent/US6216645B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3738412A1 (de) | 1987-11-12 | 1989-05-24 | Bosch Gmbh Robert | Vorrichtung und verfahren zur motorkuehlung |
US4836147A (en) | 1987-12-14 | 1989-06-06 | Ford Motor Company | Cooling system for an internal combustion engine |
DE3810174A1 (de) | 1988-03-25 | 1989-10-05 | Hella Kg Hueck & Co | Einrichtung zur regelung der kuehlmitteltemperatur einer brennkraftmaschine, insbesondere in kraftfahrzeugen |
US5309730A (en) | 1993-05-28 | 1994-05-10 | Honeywell Inc. | Thermostat for a gas engine heat pump and method for providing for engine idle prior to full speed or shutdown |
US5529114A (en) | 1994-06-10 | 1996-06-25 | Northrop Grumman Corporation | Electric vehicle coolant pump assembly |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19842167A1 (de) * | 1998-09-15 | 2000-03-16 | Wilo Gmbh | Füllstandserkennung im Kühlwasserkreislauf eines Verbrennungsmotors |
US6272923B1 (en) | 1998-09-15 | 2001-08-14 | Pierburg Aktiengesellschaft | Determining fill level of engine cooling system |
DE102006057801B4 (de) * | 2006-12-06 | 2016-12-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Diagostizieren der Funktionsfähigkeit einer Kühlmittelpumpe |
EP2065584A1 (de) * | 2007-11-30 | 2009-06-03 | Perkins Engines Company Limited | Kühlpumpenkavitationsschutzsystem |
DE102021118806B3 (de) | 2021-07-21 | 2022-10-13 | Pierburg Pump Technology Gmbh | Verfahren zur Steuerung einer elektrisch angetriebenen Fluidpumpe für ein Fahrzeug und eine elektrisch angetriebene Fluidpumpe für ein Fahrzeug |
DE102023126073A1 (de) * | 2023-09-26 | 2025-03-27 | Schaeffler Technologies AG & Co. KG | Verfahren zum Pumpenbetrieb, Fluidpumpe und Hydraulikvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
EP0893582A3 (de) | 2000-01-05 |
ES2183316T3 (es) | 2003-03-16 |
US6216645B1 (en) | 2001-04-17 |
AT502321A1 (de) | 2007-02-15 |
AT502321B8 (de) | 2007-08-15 |
EP0893582B1 (de) | 2002-10-30 |
AT502321A8 (de) | 2007-08-15 |
ATE227001T1 (de) | 2002-11-15 |
DE59806097D1 (de) | 2002-12-05 |
AT502321B1 (de) | 2007-06-15 |
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