EP0893582B1 - Verfahren zur Steuerung einer Kühlmittelpumpe einer Brennkraftmaschine - Google Patents
Verfahren zur Steuerung einer Kühlmittelpumpe einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0893582B1 EP0893582B1 EP98890207A EP98890207A EP0893582B1 EP 0893582 B1 EP0893582 B1 EP 0893582B1 EP 98890207 A EP98890207 A EP 98890207A EP 98890207 A EP98890207 A EP 98890207A EP 0893582 B1 EP0893582 B1 EP 0893582B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant pump
- pump
- motor
- 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.)
- Expired - Lifetime
Links
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 an electrically driven coolant pump for an internal combustion engine, with an electric motor pump unit and electronic control unit for generating a pulse width modulated Control signal for the pump depending on at least one Engine operating parameters, which preferably in the engine management Integrated control unit with an error detector to detect abnormalities Control signals and pump operating states and with a speed controller for the pump speed is connected, the error detector being a Has emergency equipment for the coolant pump.
- An electrically driven coolant pump is known from US Pat. No. 4,836,147 known type, whose electronically commutated DC motor by pulse width modulation from an electronic control unit In Is controlled depending on the temperature of the internal combustion engine. This can reduce the coolant throughput by changing the pump speed be adapted to requirements.
- Other coolant pumps, their Speed control based on pulse width modulation are known from US 5,529,114 A and US 5,309,730 A are known. Emergency facilities in the event of a No signal error values are provided.
- DE 37 38 412 A1 also describes a coolant system for an engine two electrical and one mechanical coolant pump.
- the electrical Coolant pumps can be controlled via an electronic switching device.
- a coolant pump initiates an emergency operation to an emergency operation of the engine. This is after submitting a corresponding Warning signal or an intervention in the engine control an engine operation with reduced performance possible.
- DE 37 02 947 A1 describes a cooling device for a Internal combustion engine with a water pump and a fan, one Electric motor drives the fan or the water pump.
- an emergency program is provided which, if the Temperature sensor or a similar fault with regard to the Temperature signal operates the electric motor at full speed. This is supposed to maximum cooling capacity guaranteed in any case and the cooling system before Protect overheating. Measures in the event of getting stuck the coolant pump are not provided.
- JP 61-083423 A1 deals with a diagnostic device for the detection of Abnormalities during the operation of a cooling water pump. It will unusual increase in engine speed and engine speed Current as an indication of the occurrence of an abnormality, such as Cavitation. Concrete measures for malfunctions in the Water pump, such as getting stuck, running dry or mechanical overload are not provided.
- the emergency program provides that a breakaway program if the coolant pump gets stuck is activated. It is envisaged that the error detector with a Hall sensor is connected to the electric motor pump unit. The coolant pump is monitored for sticking at least during the starting process and if you get stuck, a breakaway program is activated. Furthermore, it can be provided that the emergency program provides for dry running and / or mechanical overload of the electric motor for a predefined one Period is switched off.
- the amount of heat to be dissipated is transferred from the control unit via sensors determined and a pulse width modulated signal for the target speed of the Coolant pump generated depending on the amount of heat to be dissipated.
- the Signal is then checked for errors by comparing it with a predefined one Checked target signal range. If an error value is found in the signal, a Emergency program for the coolant pump started, which is sufficient Cooling of the engine ensured. Does not become an error value of the signal determined, the signal is fed to the speed controller as a setpoint, and the Coolant pump speed regulated. These steps are ongoing or repeated at predefined intervals.
- the emergency program provides that the Coolant pump with the highest cooling capacity in continuous operation enabling speed is operated, it being advantageous if the Emergency device a short circuit for an emergency control signal from the Has electric motor.
- 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 as a function of the control current I receives.
- 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)
Description
Claims (10)
- 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, wobeia) das Signals durch Vergleichen mit einem vordefinierten Sollsignalbereich auf Fehler überprüft wird,b) ein Notfallprogramm für die Kühlmittelpumpe durchgeführt wird, wenn in Schritt a) ein Fehlwert des Signals festgestellt wurde,c) die Drehzahl der Kühlmittelpumpe aufgrund des erzeugten Signales für die Solldrehzahl, geregelt wird, 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 Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Notfallprogramm vorsieht, dass bei Trockenlauf und/oder mechanischer Überiastung 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, wobei 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 Notfalleinrichtung (7b) für die Kühlmittelpumpe aufweist, dadurch gekenn zeichnet, dass die Notfalleinrichtung (7b) eine Losbrechschaltung aufweist, welche bei Steckenbleiben der Kühlmittelpumpe den Elektromotor (1) mit modulierten und/oder oszillierenden Steuersignalen versorgt.
- Kühimittelpumpe nach Anspruch 5, dadurch gekennzeichnet, dass der Fehlerdetektor (7) und der Drehzahlregler (4) in die Elektromotor-Pumpenelnheit (2) integriert sind.
- Kühlmittelpumpe nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Fehlerdetektor (7) mit einem Hall-Sensor (5) am Elektromotor (1) verbunden ist.
- Kühimittelpumpe nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Notfalleinrichtung (7b) eine Kurzschlussschaltung (13) für ein Notsteuersignal des Elektromotors aufweist, um die Kühimittelpumpe mit der die höchste Kühlleistung im Dauerbetrieb ermöglichenden Drehzahl betreiben zu können.
- Kühimittelpumpe nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Notfalleinrichtung (7b) eine Abschaltvorrichtung (14) aufweist, die bei Trockenlauf und/oder mechanischer Überlastung den Elektromotor (1) für eine vordefinierte Zeitdauer abschaltet.
- Kühimittelpumpe 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 EP0893582A2 (de) | 1999-01-27 |
EP0893582A3 EP0893582A3 (de) | 2000-01-05 |
EP0893582B1 true 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) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19842167A1 (de) * | 1998-09-15 | 2000-03-16 | Wilo Gmbh | Füllstandserkennung im Kühlwasserkreislauf eines Verbrennungsmotors |
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 |
DE102006057801B4 (de) * | 2006-12-06 | 2016-12-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Diagostizieren der Funktionsfähigkeit einer Kühlmittelpumpe |
EP2065584B1 (de) * | 2007-11-30 | 2011-08-31 | Perkins Engines Company Limited | Kühlpumpenkavitationsschutzsystem |
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 |
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 |
Family Cites Families (25)
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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 |
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 |
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 |
DE3810174C2 (de) | 1988-03-25 | 1996-09-19 | Hella Kg Hueck & Co | Einrichtung zur Regelung der Kühlmitteltemperatur einer Brennkraftmaschine, insbesondere in Kraftfahrzeugen |
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 |
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 |
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 |
US5529114A (en) * | 1994-06-10 | 1996-06-25 | Northrop Grumman Corporation | Electric vehicle coolant pump assembly |
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
Also Published As
Publication number | Publication date |
---|---|
EP0893582A2 (de) | 1999-01-27 |
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 |
AT502321A8 (de) | 2007-08-15 |
ATE227001T1 (de) | 2002-11-15 |
DE59806097D1 (de) | 2002-12-05 |
AT502321B1 (de) | 2007-06-15 |
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