EP2274509A1 - Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle - Google Patents

Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle

Info

Publication number
EP2274509A1
EP2274509A1 EP09731247A EP09731247A EP2274509A1 EP 2274509 A1 EP2274509 A1 EP 2274509A1 EP 09731247 A EP09731247 A EP 09731247A EP 09731247 A EP09731247 A EP 09731247A EP 2274509 A1 EP2274509 A1 EP 2274509A1
Authority
EP
European Patent Office
Prior art keywords
speed
drive device
drive
critical
cooling fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09731247A
Other languages
German (de)
French (fr)
Other versions
EP2274509B1 (en
Inventor
Yannick Mougey
Trudpert Meier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2274509A1 publication Critical patent/EP2274509A1/en
Application granted granted Critical
Publication of EP2274509B1 publication Critical patent/EP2274509B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • F01P7/048—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using electrical drives
    • 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/64—Number of revolutions

Definitions

  • the invention relates to a method and a device for operating a drive device.
  • a method and an apparatus for operating a drive device in the form of an engine cooling fan for the internal combustion engine of a motor vehicle are known.
  • the engine cooling fan is used to apply an airflow to an engine radiator and thus to cool the cooling liquid heated by the internal combustion engine and circulated between the internal combustion engine and the engine radiator and to dissipate the heat of the combustion process from the internal combustion engine into the environment.
  • the drive of the engine cooling fan in modern vehicles by a DC motor In order to reduce the energy expenditure for this electric drive, its power is adapted to the combustion heat to be dissipated by the internal combustion engine at the present time. In the simplest case, this happens because the engine cooling fan is only switched on as soon as the air flow generated by the driving situation is no longer sufficient for engine cooling, and then operated at a fixed rotational speed, which in all conceivable driving and environmental situations sufficient engine cooling guaranteed.
  • Energetically more favorable is a control in which the power of the engine cooling fan during driving is continuously adapted to the actually required cooling capacity.
  • the control device of the engine cooling fan (Fan Control Module FCM) used for this purpose is capable of changing the rotational speed of the electric drive of the engine cooling fan over a wide speed range, for example from 0 to 3,000 min -1
  • the setpoint speed n SO required for the current driving operation In the process, the engine control unit of the engine defines the internal control unit (ECU) and sends it as PWM (pulse wave modulation) signal to the engine cooling fan.
  • the engine cooling fan is a source of noise and, as such, is taken into account in determining the noise requirements at the vehicle level. In critical speed ranges, the engine cooling fan may possibly produce an increased noise level due to resonance alone or in its environment. Also, the electric drive of the engine fan may cause vibrations corresponding to the natural frequency of the engine cooling fan or its environment.
  • the object of the invention is to optimize the operating behavior of the drive device, in particular with regard to the development of noise and other vibrations. Disclosure of the invention
  • the object is achieved in a drive device of the type mentioned above in that when operating the drive means, the lower and the upper limit speed of a critical speed range of the drive means are determined that further the target speed of the drive means is determined and that the operation of the drive means with one of the limit speeds takes place if the setpoint speed is within the critical speed range.
  • the drive device is operated over a long period of time in a speed range in which their environment or they themselves are stimulated to natural oscillations, which are undesirable as noise and / or vibration. If it is necessary to pass through the critical speed range to reach one of the limit speeds, this is done quickly, so that the resulting impairments are minimized.
  • the method is used when the drive device is an electric drive.
  • the speed change can be done in a particularly simple manner by adjusting the electrical voltage.
  • the method according to the invention is used with particular advantage in the drive of an engine cooling fan, in particular for cooling an internal combustion engine.
  • the inertia of the cooling system promotes a waiver of operating in a critical speed range.
  • the noise requirements of motor vehicles and other devices with internal combustion engines are usually particularly high.
  • the determination of the critical speed range can in principle also take place during the operation of the drive device, for example by regularly driving through the entire speed range and determine the noise or vibrations occurring.
  • the upper and / or lower limit rotational speeds are preferably determined in advance, for example by a laboratory test with a suitably equipped vehicle. The thus determined upper and / or lower limit speed can then be electronically stored in a simple manner.
  • the setpoint speed of the drive device is determined after a special training at intervals, in particular in periodic recurrence of, for example, 5 to 15 seconds. By comparing the target rotational speed at a first time with the target rotational speed at a subsequent time, it is possible to determine whether the requirements for the power of the drive device increase or decrease. This criterion can be used to determine whether the drive device should be operated at the upper limit speed or the lower limit speed to avoid the critical speed.
  • the drive device is preferably operated at the lower limit speed, provided that the target speed is in the critical speed range and the specific target speed at a first time is greater than the bestimm ⁇ setpoint speed at the subsequent time.
  • the power requirement thus decreases with time, so that it is to be expected that the speed request will soon be below the lower limit speed in any case.
  • the drive device is operated so far with the energetically favorable lower limit speed.
  • the drive means is preferably operated for energy considerations with the lower limit speed, if the target speed is in the critical speed range and corresponds to the specific target speed at a first time of the specific target speed at the subsequent time, the power requirement so with the time neither increases nor decreases.
  • the drive means is operated at the upper limit speed, provided that the setpoint speed is in the critical speed range and the specific setpoint speed is smaller at a first time than the specific setpoint speed at the subsequent time.
  • the increase in the required power is thus counteracted by the fact that the drive device is already operated at a positive gradient of the number of revolutions by the upper limit speed.
  • a suitable device for carrying out the method is characterized by a drive means, means for determining the desired speed of the drive means and means for comparing the target speed with a certain critical speed range.
  • these means can be generated in a simple manner by adapting the usual control devices of the vehicle, internal combustion engine and / or engine cooling fan.
  • the existing means can also be adapted to store a predetermined critical speed range, for example, by storing the critical speed range in the existing there electronic data storage.
  • FIG. 1 shows the representation of a motor vehicle according to the invention
  • FIG. 2 is a diagram showing the data transmission from the internal combustion engine to the engine cooling fan
  • FIG. 3 is a graph of demanded and measured noise levels versus engine coolant fan speed; and FIG. 4 is a flowchart for controlling the engine cooling fan drive.
  • the motor vehicle 1 shown in FIG. 1 has an internal combustion engine 2 and an engine radiator 3, which are connected to one another via coolant lines 4, 4 'and form a cooling circuit.
  • An impeller pump not shown, circulates the cooling liquid in the cooling circuit.
  • an engine cooling fan 5 with an electric drive 6 is arranged in the area of the engine radiator 3. This increases depending on its speed, the air flow through the engine radiator 3 and thus improves the heat dissipation from the engine radiator 3 in the environment.
  • the internal combustion engine 2 is equipped with an electronic controller 7 (ECU) which manages the data and processes required to operate the internal combustion engine 2 and other vehicle systems (eg, airbag system). This data also includes the temperature of the coolant and the resulting power demand on the engine cooling fan 5.
  • the central controller 7 (ECU) in turn communicates with the controller 8 (FCM) of the engine cooling fan 5 via a bus system.
  • Fig. 2 shows the transmission and conversion of the data in detail.
  • the target speed risoii determined by the controller 7 (ECU) of the internal combustion engine 2 is sent as a coded signal to the controller 8 (FCM) of the engine cooling fan 5.
  • the controller 8 provides on the basis of this speed request, a voltage V which is required for operating the drive 6 of the engine cooling fan 5 with the required setpoint speed n SO ⁇ .
  • the noise emissions (in dB (A)) increase with increasing speed n (in min -1 ) when the engine cooling fan 5 is operating, even if the total noise level is substantially below the dashed line limit specified by the vehicle manufacturer [r ⁇ ; n 2] is critical speed ranges may exist in which an increase in noise emission occurs due to resonance in the exemplary embodiment is the critical speed range. [r ⁇ ; n 2] n by the lower limit rotational speed ni and the upper limit speed 2 defined and experimentally determined.
  • the flowchart shown in FIG. 4 represents the decision-making chain for largely avoiding this increased noise emission.
  • the corresponding queries can in principle be generated in the controller 7 of the internal combustion engine 2, in the controller 8 of the engine cooling fan 5 (as described below) or in another Control module of the motor vehicle 1 done, which provides appropriate capacity.
  • the setpoint speed risoii determined by the controller 7 of the internal combustion engine 2 is then checked by the controller 8 of the engine cooling fan 5 to determine whether it is above the lower limit speed ni, below the upper limit speed n 2 and thus within the critical speed range [r ⁇ ; n 2 ] lies. If this is not the case (result: no), the speed request is forwarded unchanged.
  • the drive 6 of the engine cooling fan 5 is thus supplied with the voltage V, which is required to operate with the setpoint speed n SO ⁇ .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

The invention relates to a method and a device for operating a drive device. According to the invention, it is provided that the lower speed limit (n1) and the upper speed limit (n2) of a critical speed range [n1; n2] of the drive device are determined when operating the drive device, that the target speed (nsoll) of the drive device is determined and that the operation of the drive device is done at one of the speed limits if the target speed is within the critical speed range. Through this procedure, it is for example avoided that the drive device is operated in a speed range in which the environment of the drive device or the device itself is excited into characteristic vibrations that are undesirable noise and/or vibrations.

Description

Beschreibung description
Titeltitle
Verfahren und Vorrichtung zum Betreiben einer Antriebseinrichtung, insbe- sondere eines Motorkühlgebläses eines KraftfahrzeugsMethod and device for operating a drive device, in particular an engine cooling fan of a motor vehicle
Technisches GebietTechnical area
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Betreiben einer Antriebseinrichtung.The invention relates to a method and a device for operating a drive device.
Stand der TechnikState of the art
Aus der Praxis sind ein Verfahren und eine Vorrichtung zum Betreiben einer Antriebseinrichtung in Form eines Motorkühlgebläses für den Verbrennungsmotor eines Kraftfahrzeugs bekannt. Das Motorkühlgebläse dient dazu, einen Motorkühler mit einem Luftstrom zu beaufschlagen und damit die vom Verbrennungsmotor erhitzte und zwischen Verbrennungsmotor und Motorkühler umgewälzte Kühlflüssigkeit abzukühlen und Wärme des Verbren- nungsprozesses aus dem Verbrennungsmotor in die Umgebung abzuführen.From practice, a method and an apparatus for operating a drive device in the form of an engine cooling fan for the internal combustion engine of a motor vehicle are known. The engine cooling fan is used to apply an airflow to an engine radiator and thus to cool the cooling liquid heated by the internal combustion engine and circulated between the internal combustion engine and the engine radiator and to dissipate the heat of the combustion process from the internal combustion engine into the environment.
Üblicherweise erfolgt der Antrieb des Motorkühlgebläses bei modernen Fahrzeugen durch einen Gleichstrommotor. Um den Energieaufwand für diesen elektrischen Antrieb zu verringern, wird dessen Leistung an die zum gegen- wärtigen Zeitpunkt vom Verbrennungsmotor abzuführende Verbrennungswärme angepasst. Im einfachsten Fall geschieht dies dadurch, dass das Motorkühlgebläse nur dann zugeschaltet wird, sobald der durch die Fahrsituation erzeugte Luft- strom zur Motorkühlung nicht mehr ausreicht, und dann mit einer festgeleg- ten Drehzahl betrieben wird, welche bei allen denkbaren Fahr- und Umgebungssituationen eine ausreichende Motorkühlung gewährleistet.Usually, the drive of the engine cooling fan in modern vehicles by a DC motor. In order to reduce the energy expenditure for this electric drive, its power is adapted to the combustion heat to be dissipated by the internal combustion engine at the present time. In the simplest case, this happens because the engine cooling fan is only switched on as soon as the air flow generated by the driving situation is no longer sufficient for engine cooling, and then operated at a fixed rotational speed, which in all conceivable driving and environmental situations sufficient engine cooling guaranteed.
Energetisch günstiger ist jedoch eine Steuerung, bei welcher die Leistung des Motorkühlgebläses während des Fahrbetriebs kontinuierlich an die tat- sächlich erforderliche Kühlleistung angepasst wird. Das hierzu eingesetzte Steuergerät des Motorkühlgebläses (Fan Control Module FCM) ist in der Lage, die Drehzahl des elektrischen Antriebs des Motorkühlgebläses über einen weiten Drehzahlbereich, beispielsweise von 0 bis 3.000 min"1, zu verändern. Die für den aktuellen Fahrbetrieb erforderliche Solldrehzahl nSOιι wird dabei im Fahrzeugsteuergerät (ECU) vom Motormanagement des Verbrennungsmotors definiert und als PWM (Pulswellenmodulation)-Signal an das Motorkühlgebläse übermittelt. Die Umsetzung der Drehzahlanforderung in eine elektrische Spannung für den Antrieb des Motorkühlgebläses findet dann im Steuergerät des Motorkühlgebläses statt.Energetically more favorable, however, is a control in which the power of the engine cooling fan during driving is continuously adapted to the actually required cooling capacity. The control device of the engine cooling fan (Fan Control Module FCM) used for this purpose is capable of changing the rotational speed of the electric drive of the engine cooling fan over a wide speed range, for example from 0 to 3,000 min -1 The setpoint speed n SO required for the current driving operation In the process, the engine control unit of the engine defines the internal control unit (ECU) and sends it as PWM (pulse wave modulation) signal to the engine cooling fan.
Das Motorkühlgebläse ist eine Geräuschquelle und wird als solche bei der Festlegung der Geräuschanforderungen auf Fahrzeugebene berücksichtigt. In kritischen Drehzahlbereichen kann das Motorkühlgebläse dabei gegebenenfalls infolge Resonanz für sich alleine oder in seiner Umgebung einen erhöhten Geräuschpegel erzeugen. Auch der elektrische Antrieb des Motorgebläses kann Schwingungen verursachen, welche der Eigenfrequenz des Motorkühlgebläses oder seiner Umgebung entsprechen.The engine cooling fan is a source of noise and, as such, is taken into account in determining the noise requirements at the vehicle level. In critical speed ranges, the engine cooling fan may possibly produce an increased noise level due to resonance alone or in its environment. Also, the electric drive of the engine fan may cause vibrations corresponding to the natural frequency of the engine cooling fan or its environment.
Der Erfindung liegt die Aufgabe zugrunde, das Betriebsverhalten der An- triebseinrichtung insbesondere hinsichtlich der Entwicklung von Geräuschen und sonstigen Schwingungen zu optimieren. Offenbarung der ErfindungThe object of the invention is to optimize the operating behavior of the drive device, in particular with regard to the development of noise and other vibrations. Disclosure of the invention
Die Aufgabe wird bei einer Antriebseinrichtung der eingangs genannten Art dadurch gelöst, dass beim Betreiben der Antriebseinrichtung die untere und die obere Grenzdrehzahl eines kritischen Drehzahlbereichs der Antriebseinrichtung bestimmt werden, dass ferner die Solldrehzahl der Antriebseinrichtung bestimmt wird und dass das Betreiben der Antriebseinrichtung mit einer der Grenzdrehzahlen erfolgt, sofern die Solldrehzahl im kritischen Drehzahlbereich liegt.The object is achieved in a drive device of the type mentioned above in that when operating the drive means, the lower and the upper limit speed of a critical speed range of the drive means are determined that further the target speed of the drive means is determined and that the operation of the drive means with one of the limit speeds takes place if the setpoint speed is within the critical speed range.
Durch dieses Vorgehen wird beispielsweise vermieden, dass die Antriebseinrichtung über einen längeren Zeitraum in einem Drehzahlbereich betrieben wird, in welchem ihre Umgebung oder sie selber zu Eigenschwingungen angeregt werden, welche als Geräusche und/oder Vibrationen unerwünscht sind. Falls es erforderlich wird, den kritischen Drehzahlbereich zum Erreichen einer der Grenzdrehzahlen zu durchfahren, geschieht dies zügig, so dass die dabei auftretenden Beeinträchtigungen möglichst gering sind.By this procedure is avoided, for example, that the drive device is operated over a long period of time in a speed range in which their environment or they themselves are stimulated to natural oscillations, which are undesirable as noise and / or vibration. If it is necessary to pass through the critical speed range to reach one of the limit speeds, this is done quickly, so that the resulting impairments are minimized.
Vorzugsweise wird das Verfahren dann angewandt, wenn die Antriebsein- richtung ein elektrischer Antrieb ist. Bei Gleichstrommotoren kann die Drehzahländerung auf besonders einfache Weise durch Anpassung der elektrischen Spannung erfolgen.Preferably, the method is used when the drive device is an electric drive. In DC motors, the speed change can be done in a particularly simple manner by adjusting the electrical voltage.
Das erfindungsgemäße Verfahren wird mit besonderem Vorteil bei dem An- trieb eines Motorkühlgebläses eingesetzt, insbesondere zur Kühlung eines Verbrennungsmotors. Die Trägheit des Kühlsystems begünstigt einen Verzicht auf das Betreiben in einem kritischen Drehzahlbereich. Ferner sind die Anforderungen an die Geräuschentwicklung von Kraftfahrzeugen und anderen Einrichtungen mit Verbrennungsmotoren üblicherweise besonders hoch. Die Bestimmung des kritischen Drehzahlbereichs kann grundsätzlich auch während des Betreibens der Antriebseinrichtung erfolgen, beispielsweise durch regelmäßiges Durchfahren des kompletten Drehzahlbereichs und ermitteln der dabei auftretenden Geräusche oder Schwingungen. Bei Syste- men, deren Resonanzverhalten sich mit der Zeit nicht oder nur unbedeutend ändert, werden die obere und/oder untere Grenzdrehzahl jedoch bevorzugt vorab ermittelt, beispielsweise durch einen Laborversuch mit einem entsprechend ausgestatteten Fahrzeug. Die so bestimmte obere und/oder untere Grenzdrehzahl kann dann auf einfache Weise elektronisch gespeichert wer- den.The method according to the invention is used with particular advantage in the drive of an engine cooling fan, in particular for cooling an internal combustion engine. The inertia of the cooling system promotes a waiver of operating in a critical speed range. Furthermore, the noise requirements of motor vehicles and other devices with internal combustion engines are usually particularly high. The determination of the critical speed range can in principle also take place during the operation of the drive device, for example by regularly driving through the entire speed range and determine the noise or vibrations occurring. For systems whose resonance behavior does not change or only insignificantly changes with time, however, the upper and / or lower limit rotational speeds are preferably determined in advance, for example by a laboratory test with a suitably equipped vehicle. The thus determined upper and / or lower limit speed can then be electronically stored in a simple manner.
Die Solldrehzahl der Antriebseinrichtung wird nach einer besonderen Ausbildung in Zeitabständen bestimmt, insbesondere in periodischer Wiederkehr von beispielsweise 5 bis 15 Sekunden. Durch einen Vergleich der Solldreh- zahl zu einem ersten Zeitpunkt mit der Solldrehzahl zu einem nachfolgenden Zeitpunkt lässt sich feststellen, ob die Anforderungen an die Leistung der Antriebseinrichtung zunehmen oder abnehmen. Dieses Kriterium lässt sich dahingehend nutzen, ob zur Vermeidung der kritischen Drehzahl die Antriebseinrichtung mit der oberen Grenzdrehzahl oder der unteren Grenzdreh- zahl zu betreiben ist.The setpoint speed of the drive device is determined after a special training at intervals, in particular in periodic recurrence of, for example, 5 to 15 seconds. By comparing the target rotational speed at a first time with the target rotational speed at a subsequent time, it is possible to determine whether the requirements for the power of the drive device increase or decrease. This criterion can be used to determine whether the drive device should be operated at the upper limit speed or the lower limit speed to avoid the critical speed.
So wird die Antriebseinrichtung bevorzugt mit der unteren Grenzdrehzahl betrieben, sofern die Solldrehzahl im kritischen Drehzahlbereich liegt und die bestimmte Solldrehzahl zu einem ersten Zeitpunkt größer ist als die bestimm- te Solldrehzahl zu dem nachfolgenden Zeitpunkt. Die Leistungsanforderung nimmt also mit der Zeit ab, so dass zu erwarten ist, dass die Drehzahlanforderung ohnehin in Kürze unterhalb der unteren Grenzdrehzahl liegen wird. Die Antriebseinrichtung wird bis dahin also mit der energetisch günstigeren unteren Grenzdrehzahl betrieben.Thus, the drive device is preferably operated at the lower limit speed, provided that the target speed is in the critical speed range and the specific target speed at a first time is greater than the bestimm¬ setpoint speed at the subsequent time. The power requirement thus decreases with time, so that it is to be expected that the speed request will soon be below the lower limit speed in any case. The drive device is operated so far with the energetically favorable lower limit speed.
Ebenfalls wird die Antriebseinrichtung aus energetischen Erwägungen vorzugsweise mit der unteren Grenzdrehzahl betrieben, sofern die Solldrehzahl im kritischen Drehzahl bereich liegt und die bestimmte Solldrehzahl zu einem ersten Zeitpunkt der bestimmten Solldrehzahl zu dem nachfolgenden Zeitpunkt entspricht, die Leistungsanforderung also mit der Zeit weder zu- noch abnimmt.Also, the drive means is preferably operated for energy considerations with the lower limit speed, if the target speed is in the critical speed range and corresponds to the specific target speed at a first time of the specific target speed at the subsequent time, the power requirement so with the time neither increases nor decreases.
Mit Vorteil ist weiterhin vorgesehen, dass die Antriebseinrichtung mit der oberen Grenzdrehzahl betrieben wird, sofern die Solldrehzahl im kritischen Drehzahlbereich liegt und die bestimmte Solldrehzahl zu einem ersten Zeitpunkt kleiner ist als die bestimmte Solldrehzahl zu dem nachfolgenden Zeit- punkt. Dem Anstieg der geforderten Leistung wird somit dadurch entgegen gewirkt, dass die Antriebseinrichtung bei einem positiven Gradienten der Drehanzahlforderung bereits mit der oberen Grenzdrehzahl betrieben wird.Advantageously, it is further provided that the drive means is operated at the upper limit speed, provided that the setpoint speed is in the critical speed range and the specific setpoint speed is smaller at a first time than the specific setpoint speed at the subsequent time. The increase in the required power is thus counteracted by the fact that the drive device is already operated at a positive gradient of the number of revolutions by the upper limit speed.
Eine zur Durchführung des Verfahrens geeignete Vorrichtung zeichnet sich durch eine Antriebseinrichtung, Mittel zur Bestimmung der Solldrehzahl der Antriebseinrichtung und Mittel zum Vergleich der Solldrehzahl mit einem bestimmten kritischen Drehzahlbereich aus. Bei einem Kraftfahrzeug können diese Mittel auf einfache Weise durch Adaption der üblichen Steuergeräte von Fahrzeug, Verbrennungsmotor und/oder Motorkühlgebläse erzeugt wer- den.A suitable device for carrying out the method is characterized by a drive means, means for determining the desired speed of the drive means and means for comparing the target speed with a certain critical speed range. In the case of a motor vehicle, these means can be generated in a simple manner by adapting the usual control devices of the vehicle, internal combustion engine and / or engine cooling fan.
Die vorhandenen Mittel können ferner auch zur Speicherung eines vorab festgelegten kritischen Drehzahlbereichs angepasst werden, beispielsweise durch Speicherung des kritischen Drehzahlbereichs in den dort vorhandenen elektronischen Datenspeichern.The existing means can also be adapted to store a predetermined critical speed range, for example, by storing the critical speed range in the existing there electronic data storage.
Kurzbeschreibung der ZeichnungenBrief description of the drawings
Die Figuren stellen am Beispiel eines Motorkühlgebläses eines Kraftfahr- zeugs schematisch die Durchführung des erfindungsgemäßen Verfahrens und die dabei eingesetzten Mittel dar. Es zeigen: Fig. 1 die Darstellung eines erfindungsgemäß ausgestatteten Kraftfahrzeugs,The figures illustrate the example of an engine cooling fan of a motor vehicle schematically the implementation of the method according to the invention and the means employed therein. 1 shows the representation of a motor vehicle according to the invention,
Fig. 2 ein Diagramm mit der Darstellung der Datenübertragung vom Verbrennungsmotor zum Motorkühlgebläse,2 is a diagram showing the data transmission from the internal combustion engine to the engine cooling fan,
Fig. 3 eine graphische Darstellung des geforderten und des gemessenen Geräuschpegels über die Drehzahl des Motorkühlgebläses, und Fig. 4 ein Flussdiagramm zur Steuerung des Antriebs des Motorkühlgebläses.3 is a graph of demanded and measured noise levels versus engine coolant fan speed; and FIG. 4 is a flowchart for controlling the engine cooling fan drive.
Beschreibung von AusführungsformenDescription of embodiments
Das in Fig. 1 gezeigt Kraftfahrzeug 1 weist einen Verbrennungsmotor 2 und einen Motorkühler 3 auf, die über Kühlmittelleitungen 4, 4' miteinander ver- bunden sind und einen Kühlkreislauf ausbilden. Eine nicht dargestellte Flügelradpumpe wälzt die Kühlflüssigkeit im Kühlkreislauf um. Im Bereich des Motorkühlers 3 ist ein Motorkühlgebläse 5 mit einem elektrischen Antrieb 6 angeordnet. Dieses erhöht in Abhängigkeit von seiner Drehzahl den Luftstrom durch den Motorkühler 3 und verbessert damit die Wärmeabfuhr aus dem Motorkühler 3 in die Umgebung.The motor vehicle 1 shown in FIG. 1 has an internal combustion engine 2 and an engine radiator 3, which are connected to one another via coolant lines 4, 4 'and form a cooling circuit. An impeller pump, not shown, circulates the cooling liquid in the cooling circuit. In the area of the engine radiator 3, an engine cooling fan 5 with an electric drive 6 is arranged. This increases depending on its speed, the air flow through the engine radiator 3 and thus improves the heat dissipation from the engine radiator 3 in the environment.
Der Verbrennungsmotor 2 ist mit einer elektronischen Steuerung 7 (ECU) ausgestattet, welche die zum Betreiben des Verbrennungsmotors 2 und anderer Fahrzeugsysteme (z. B. Airbagsystem) erforderlichen Daten und Pro- zesse verwaltet. Zu diesen Daten gehören auch die Temperatur des Kühlmittels und die sich daraus ergebende Leistungsanforderung an das Motorkühlgebläse 5. Die zentrale Steuerung 7 (ECU) kommuniziert ihrerseits über ein Bussystem mit der Steuerung 8 (FCM) des Motorkühlgebläses 5.The internal combustion engine 2 is equipped with an electronic controller 7 (ECU) which manages the data and processes required to operate the internal combustion engine 2 and other vehicle systems (eg, airbag system). This data also includes the temperature of the coolant and the resulting power demand on the engine cooling fan 5. The central controller 7 (ECU) in turn communicates with the controller 8 (FCM) of the engine cooling fan 5 via a bus system.
Fig. 2 zeigt die Übermittlung und Umwandlung der Daten im Einzelnen. Die von der Steuerung 7 (ECU) des Verbrennungsmotors 2 bestimmte Solldrehzahl risoii wird als codiertes Signal zur Steuerung 8 (FCM) des Motorkühlgebläses 5 geleitet. Die Steuerung 8 stellt auf Grundlage dieser Drehzahlanforderung eine Spannung V bereit, welche zum Betreiben des Antriebs 6 des Motorkühlgebläses 5 mit der geforderten Solldrehzahl nSOιι erforderlich ist.Fig. 2 shows the transmission and conversion of the data in detail. The target speed risoii determined by the controller 7 (ECU) of the internal combustion engine 2 is sent as a coded signal to the controller 8 (FCM) of the engine cooling fan 5. The controller 8 provides on the basis of this speed request, a voltage V which is required for operating the drive 6 of the engine cooling fan 5 with the required setpoint speed n SO ιι.
Wie aus Fig. 3 ersichtlich, nehmen die Geräuschemissionen (in dB(A)) beim Betreiben des Motorkühlgebläses 5 mit steigender Drehzahl n (in min"1) zu. Auch wenn der Geräuschpegel insgesamt im Wesentlichen unter der gestrichelt dargestellten, vom Fahrzeughersteller spezifizierten Grenze liegt, können kritische Drehzahlbereiche [rπ; n2] bestehen, in denen infolge Resonanz eine Erhöhung der Geräuschemission auftritt. Im Ausführungsbeispiel ist der kritische Drehzahlbereich [rπ; n2] durch die untere Grenzdrehzahl ni und die obere Grenzdrehzahl n2 definiert und wird experimentell ermittelt.As can be seen from Fig. 3, the noise emissions (in dB (A)) increase with increasing speed n (in min -1 ) when the engine cooling fan 5 is operating, even if the total noise level is substantially below the dashed line limit specified by the vehicle manufacturer [rπ; n 2] is critical speed ranges may exist in which an increase in noise emission occurs due to resonance in the exemplary embodiment is the critical speed range. [rπ; n 2] n by the lower limit rotational speed ni and the upper limit speed 2 defined and experimentally determined.
Das in Fig. 4 gezeigte Flussdiagramm stellt die Entscheidungskette zur weitgehenden Vermeidung dieser erhöhten Geräuschemission dar. Die entsprechenden Abfragen können grundsätzlich in der Steuerung 7 des Verbren- nungsmotors 2, in der Steuerung 8 des Motorkühlgebläses 5 (wie nachfolgend beschrieben) oder auch in einem anderen Steuerungsmodul des Kraftfahrzeugs 1 erfolgen, welches entsprechende Kapazitäten bereitstellt.The flowchart shown in FIG. 4 represents the decision-making chain for largely avoiding this increased noise emission. The corresponding queries can in principle be generated in the controller 7 of the internal combustion engine 2, in the controller 8 of the engine cooling fan 5 (as described below) or in another Control module of the motor vehicle 1 done, which provides appropriate capacity.
Die von der Steuerung 7 des Verbrennungsmotors 2 bestimmte Solldrehzahl risoii wird von der Steuerung 8 des Motorkühlgebläses 5 daraufhin geprüft, ob sie oberhalb der unteren Grenzdrehzahl ni, unterhalb der oberen Grenzdrehzahl n2 und damit innerhalb des kritischen Drehzahlbereichs [rπ; n2] liegt. Ist dies nicht der Fall (Ergebnis: nein), wird die Drehzahlanforderung unverändert weitergeleitet. Der Antrieb 6 des Motorkühlgebläses 5 wird somit mit der Spannung V versorgt, welche zum Betreiben mit der Solldrehzahl nSOιι erforderlich ist. Befindet sich die Solldrehzahl nSOιι hingegen zwischen der unteren Grenzdrehzahl ni und der oberen Grenzdrehzahl n2 und damit innerhalb des kritischen Drehzahlbereichs [rπ; n2] (Ergebnis: ja), wird im nächsten Verfahrensschritt ermittelt, ob der Gradient der Drehzahlanforderung positiv ist (Δ nSOιι = (risoii (tk+i) - nSOιι (tk)) > 0). In diesem Fall steigt die geforderte Solldrehzahl nSOιι von einer Bestimmung zum Zeitpunkt tk zur zeitlich nachfolgenden Bestimmung zum Zeitpunkt tk+i an. Trifft dieses zu (Ergebnis: ja), wird als korrigierte Solldrehzahl nSOιι koπ- die obere Grenzdrehzahl n2 festgelegt und der Antrieb 6 des Motorkühlgebläses 5 infolge des anwachsenden Kühlleistungsbedarfs bereits mit einer etwas zu hohen Spannung versorgt.The setpoint speed risoii determined by the controller 7 of the internal combustion engine 2 is then checked by the controller 8 of the engine cooling fan 5 to determine whether it is above the lower limit speed ni, below the upper limit speed n 2 and thus within the critical speed range [rπ; n 2 ] lies. If this is not the case (result: no), the speed request is forwarded unchanged. The drive 6 of the engine cooling fan 5 is thus supplied with the voltage V, which is required to operate with the setpoint speed n SO ιι. The target speed n is SO ιι contrast between the lower limit rotational speed ni and the upper limit rotational speed n 2 and thus within the critical speed range [rπ; n 2 ] (result: yes), it is determined in the next method step whether the gradient of the speed request is positive (Δ n SO ιι = (risoii (tk + i) - n SO ιι (tk))> 0). In this case, the required target speed n SO ιι increases from a determination at the time t k to the time-subsequent determination at the time t k + i. If this is the case (result: yes), the upper limit speed n 2 is set as the corrected setpoint speed n SO and the drive 6 of the engine cooling fan 5 is already supplied with a slightly too high voltage as a result of the increasing cooling power requirement.
Ist der Gradient der Drehzahlanforderung hingegen gleich Null oder negativ (Ergebnis: nein), wird als korrigierte Solldrehzahl nSOιi korr in Erwartung eines gleichbleibenden oder sinkenden Kühlleistungsbedarfs die untere Grenzdreh- zahl ni festgelegt. Sollte sich die sich nun einstellende Kühlleistung als zu gering erweisen, wird sich bei den nachfolgenden Bestimmungen ein positiver Gradient der Drehzahlanforderung einstellen und die Grenzdrehzahl auf den oberen Wert n2 angehoben. Ein geeigneter Algorithmus verhindert, dass die korrigierte Solldrehzahl nS0n korr in schneller Folge zwischen den Grenz- drehzahl ni und n2 schwankt.Is the gradient of the speed requirement, however, zero or negative (result NO), as the corrected target rotational speed n SO corr ιi in anticipation of a constant or decreasing cooling requirement Grenzdreh- the lower speed Ni set. If the now set cooling performance proves to be too low, a positive gradient of the speed requirement will be set in the following determinations and the limit speed will be raised to the upper value n 2 . A suitable algorithm prevents the corrected setpoint speed n S0 n corr fluctuates in rapid succession between the limit speed ni and n 2 .
In Abwandlung dieser Verfahrensabfolge ist grundsätzlich auch denkbar, als korrigierte Solldrehzahl nS0n korr stets die untere Grenzdrehzahl ni vorzusehen, sofern die geforderte Solldrehzahl nSOιι im kritischen Drehzahlbereich [rπ; n2] liegt, und die Kühlleistung erst dann anzuheben, wenn die Solldrehzahl risoii die obere Grenzdrehzahl n2 überschreitet. Ebenso ist vorstellbar, stets mit einem Überschuss an Kühlleistung zu arbeiten, sofern die geforderte Solldrehzahl nSOιι im kritischen Drehzahlbereich [rπ; n2] liegt, in diesem Fall als korrigierte Solldrehzahl nSOιι korr also die obere Grenzdrehzahl n2 einzustel- len. In a modification of this sequence of processes, it is also conceivable to always provide the lower limit speed ni as the corrected setpoint speed n S0 n corr, provided that the required setpoint speed n SO ιι in the critical speed range [rπ; n 2 ], and to increase the cooling power only when the target speed risoii exceeds the upper limit speed n 2 . It is also conceivable always to work with an excess of cooling power, provided that the required setpoint speed n SO ιι in the critical speed range [rπ; n 2 ] lies, in this case, as the corrected setpoint speed n SO ιι korr so set the upper limit speed n 2 len.

Claims

Ansprüche claims
1. Verfahren zum Betreiben einer Antriebseinrichtung, mit den Schritten: Bestimmen der unteren und oberen Grenzdrehzahl (ni, n2) eines kritischen Drehzahlbereichs [rπ; n2] der Antriebseinrichtung, Bestimmen der Solldrehzahl (nson) der Antriebseinrichtung,A method of operating a drive device, comprising the steps of: determining the lower and upper limit speeds (ni, n 2 ) of a critical speed range [rπ; n 2 ] of the drive device, determining the setpoint speed (n so n) of the drive device,
Betreiben der Antriebseinrichtung mit einer Grenzdrehzahl (ni, n2), sofern die SolldrehzahlOperating the drive device with a limiting speed (ni, n 2 ), if the target speed
(nSOιι) im kritischen Drehzahlbereich [rπ; n2] liegt.(n SO ιι) in the critical speed range [rπ; n 2 ] lies.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Antriebseinrichtung ein elektrischer Antrieb (6) ist.2. The method according to claim 1, characterized in that the drive device is an electric drive (6).
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Antriebseinrichtung der Antrieb (6) eines Motorkühlgebläses (5) ist.3. The method according to claim 1 or 2, characterized in that the drive means is the drive (6) of an engine cooling fan (5).
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass das Mo- torkühlgebläse (5) zur Kühlung eines Verbrennungsmotors (2), insbesondere eines Kraftfahrzeugs, dient.4. The method according to claim 3, characterized in that the motor torkühlgebläse (5) for cooling an internal combustion engine (2), in particular a motor vehicle, is used.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die untere und/oder obere Grenzdrehzahl (ni, n2) vorab festgelegt werden.5. The method according to any one of the preceding claims, characterized in that the lower and / or upper limit speed (ni, n 2 ) are set in advance.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die untere und/oder obere Grenzdrehzahl (ni, n2), elektronisch gespeichert werden.6. The method according to claim 5, characterized in that the lower and / or upper limit speed (ni, n 2 ) are stored electronically.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Solldrehzahl nSOιι in vorzugsweise periodisch wiederkehrenden Zeitabständen (tk, tk+i) bestimmt wird. 7. The method according to any one of the preceding claims, characterized in that the setpoint speed n SO ιι in preferably periodically recurring time intervals (t k , t k + i) is determined.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Antriebseinrichtung mit der unteren Grenzdrehzahl (ni) betrieben wird, sofern die Solldrehzahl (nson) im kritischen Drehzahlbereich [rπ; n2] liegt und die be- stimmte Solldrehzahl (nSOιι) zu einem ersten Zeitpunkt (tk) größer ist als die bestimmte Solldrehzahl (nSOιι) zu dem nachfolgenden Zeitpunkt (tk+i).8. The method according to claim 7, characterized in that the drive device with the lower limit speed (ni) is operated, provided that the target speed (n so n) in the critical speed range [rπ; n 2 ] and the specified target speed (n SO ιι) at a first time (t k ) is greater than the specific target speed (n SO ιι) at the subsequent time (t k + i).
9. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Antriebseinrichtung mit der unteren Grenzdrehzahl ni betrieben wird, sofern die Solldrehzahl (nson) im kritischen Drehzahlbereich [rπ; n2] liegt und die bestimmte Solldrehzahl (nSOιι) zu einem ersten Zeitpunkt (tk) der bestimmten Solldrehzahl (nSOιι) zu dem nachfolgenden Zeitpunkt (tk+i) entspricht.9. The method according to claim 7 or 8, characterized in that the drive device is operated with the lower limit speed ni, provided that the setpoint speed (n so n) in the critical speed range [rπ; n 2 ] and the specified setpoint speed (n SO ιι) at a first time (t k ) of the specific setpoint speed (n SO ιι) at the subsequent time (t k + i) corresponds.
10. Verfahren nach Anspruch 7 bis 9, dadurch gekennzeichnet, dass die Antriebseinrichtung mit der oberen Grenzdrehzahl n2 betrieben wird, sofern die Solldrehzahl (nSOιι) im kritischen Drehzahlbereich [rπ; n2] liegt und die bestimmte Solldrehzahl (nSOιι) zu einem ersten Zeitpunkt (tk) kleiner ist als die bestimmte Solldrehzahl (nSOιι) zu dem nachfolgenden Zeitpunkt (tk+i).10. The method according to claim 7 to 9, characterized in that the drive means is operated at the upper limit speed n 2 , provided that the setpoint speed (n SO ιι) in the critical speed range [rπ; n 2 ] and the specific target speed (n SO ιι) at a first time (t k ) is smaller than the specific target speed (n SO ιι) at the subsequent time (t k + i).
11. Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Antriebseinrichtung, Mittel zur Bestimmung der Solldrehzahl der Antriebseinrichtung und Mittel zum Vergleich der Solldrehzahl (nson) mit einem bestimmten kritischen Drehzahlbereich [ni; n2].11. A device for carrying out the method according to any one of the preceding claims, characterized by a drive means, means for determining the desired speed of the drive means and means for comparing the target speed (n so n) with a certain critical speed range [ni; n 2 ].
12. Vorrichtung nach Anspruch 11 , gekennzeichnet durch Mittel zur Speicherung eines vorab festgelegten kritischen Drehzahlbereichs [rπ; n2].12. The device according to claim 11, characterized by means for storing a predetermined critical speed range [rπ; n 2 ].
13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Mit- tel zur Speicherung des kritischen Drehzahlbereichs einen elektronischen13. The apparatus according to claim 12, characterized in that the means for storing the critical speed range an electronic
Datenspeicher umfassen. Include data storage.
EP09731247A 2008-04-07 2009-03-25 Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle Not-in-force EP2274509B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008001024A DE102008001024A1 (en) 2008-04-07 2008-04-07 Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle
PCT/EP2009/053479 WO2009124842A1 (en) 2008-04-07 2009-03-25 Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle

Publications (2)

Publication Number Publication Date
EP2274509A1 true EP2274509A1 (en) 2011-01-19
EP2274509B1 EP2274509B1 (en) 2012-05-16

Family

ID=40756943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09731247A Not-in-force EP2274509B1 (en) 2008-04-07 2009-03-25 Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle

Country Status (5)

Country Link
US (1) US8825285B2 (en)
EP (1) EP2274509B1 (en)
JP (1) JP5523441B2 (en)
DE (1) DE102008001024A1 (en)
WO (1) WO2009124842A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8985068B2 (en) * 2010-07-22 2015-03-24 Robert Bosch Gmbh Systems and methods for avoiding resonances excited by rotating components
US9551275B2 (en) * 2014-08-07 2017-01-24 Caterpillar Inc. Cooling system having pulsed fan control

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62260591A (en) * 1986-03-14 1987-11-12 Daikin Ind Ltd Revolving speed controller for blowing fan
US5584371A (en) * 1995-08-31 1996-12-17 Eaton Corporation Viscous fan drive system logic
DE19638064C2 (en) * 1996-09-18 1998-08-20 Voith Turbo Kg Method for controlling switching operations in a vehicle transmission
JP3833361B2 (en) 1997-10-01 2006-10-11 本田技研工業株式会社 Engine waste heat supply device
JP3823481B2 (en) * 1997-10-06 2006-09-20 株式会社デンソー Automotive cooling system
JP4204137B2 (en) * 1999-04-22 2009-01-07 株式会社小松製作所 Drive control device for cooling fan
JP2001193460A (en) 2000-01-07 2001-07-17 Fuji Heavy Ind Ltd Rotational speed control device for motor-driven cooling fan
EP1316695B1 (en) * 2001-11-30 2006-12-20 BorgWarner Inc. Fan control of a cooling system of an internal combustion engine
JP2004044507A (en) 2002-07-12 2004-02-12 Toyota Motor Corp Controlling equipment of electric motor fan mounted inside vehicle
CN101253315B (en) 2005-08-29 2011-04-13 株式会社小松制作所 Control device for hydraulically driven fan
JP2007065871A (en) * 2005-08-30 2007-03-15 Toshiba Corp Information-processing device and fan-control method
US8985068B2 (en) * 2010-07-22 2015-03-24 Robert Bosch Gmbh Systems and methods for avoiding resonances excited by rotating components

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009124842A1 *

Also Published As

Publication number Publication date
EP2274509B1 (en) 2012-05-16
JP5523441B2 (en) 2014-06-18
WO2009124842A1 (en) 2009-10-15
US8825285B2 (en) 2014-09-02
DE102008001024A1 (en) 2009-10-08
US20110040445A1 (en) 2011-02-17
JP2011516784A (en) 2011-05-26

Similar Documents

Publication Publication Date Title
DE112011102914B4 (en) Control for regenerating an aftertreatment device in a vehicle with hybrid drive
DE102012220529B4 (en) DYNAMIC TUNING OF ENGINE AUTOSTOP CRITERIA
DE102006001201B4 (en) Method for controlling a battery charging operation
DE102015218825A1 (en) Control system for the air conditioning of a vehicle
DE102013222418B4 (en) PROCESS FOR CONTROLLING A COOLANT PUMP IN THE SHUTTER OPERATION
DE102015213768B3 (en) A method for determining a torque accuracy of a torque transmitted from a belt-driven starter generator of an internal combustion engine to the internal combustion engine, computing unit and machine-readable storage medium
DE102013200539A1 (en) Internal combustion engines CONTROL SYSTEM
DE10332231A1 (en) Arrangement and method for power-based idle speed control
DE102012112794A1 (en) Method for determining a fuel fraction in oil
EP2507103B1 (en) Method and device for controlling hybrid functions in a motor vehicle
DE102008054451A1 (en) Method and device for operating a drive train for a vehicle
EP2274509B1 (en) Method and device for operating a drive device, in particular an engine cooling fan of a motor vehicle
EP1308610B1 (en) Method and device for controlling a cooling system of an internal combustion engine
DE102010025225A1 (en) Magnetic coupling control method for air conditioning apparatus utilized in motor car, involves controlling and/or adjusting energization value of coupling between specified upper and lower values in start position
EP2791751B1 (en) Control device for a radiator fan, radiator fan arrangement and method
DE102013003512B4 (en) Power supply in an on-board network for a compressor in an air supply system
DE102015208374A1 (en) Method for operating a hybrid drive in a motor vehicle with regenerative catalyst
DE102013225487B4 (en) A method of controlling the temperature of a controller of a compressor assembly for an air conditioning system in a vehicle
WO2017202676A1 (en) Automatic optimization of an operating parameter of an electric machine
DE102010017392A1 (en) Enhanced electrical operation activating method for e.g. motor car, involves performing preconditioning of traction battery of motor vehicle by increase of temperature of traction battery when control element is operated by driver
DE102009056783B4 (en) Method and device for determining a simplified modeled coolant temperature value for a cooling circuit of an internal combustion engine
DE102008049803B4 (en) Temperature control of a coolant with optimized utilization of a residual stress capability of an engine
DE102010021404A1 (en) Method for operating automatic start-stop-system for motor vehicle for use with drive train, involves driving motor vehicle by internal combustion engine, where speed gradient is reduced by retardation of ignition angle
DE102009056575B4 (en) Method and device for determining a modeled temperature value in an internal combustion engine and method for plausibility of a temperature sensor
DE102017218333A1 (en) Method and device for controlling a camshaft adjuster

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20101108

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20110627

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 558213

Country of ref document: AT

Kind code of ref document: T

Effective date: 20120615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009003555

Country of ref document: DE

Effective date: 20120726

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20120516

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Effective date: 20120530

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120916

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120816

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120817

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20130219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120827

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009003555

Country of ref document: DE

Effective date: 20130219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120816

BERE Be: lapsed

Owner name: ROBERT BOSCH G.M.B.H.

Effective date: 20130331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130325

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130325

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 558213

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130325

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20090325

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20120516

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140325

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20180326

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20190321

Year of fee payment: 11

Ref country code: FR

Payment date: 20190326

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190520

Year of fee payment: 11

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190326

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502009003555

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200325