WO2014177360A1 - Dc drive - Google Patents

Dc drive Download PDF

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Publication number
WO2014177360A1
WO2014177360A1 PCT/EP2014/057320 EP2014057320W WO2014177360A1 WO 2014177360 A1 WO2014177360 A1 WO 2014177360A1 EP 2014057320 W EP2014057320 W EP 2014057320W WO 2014177360 A1 WO2014177360 A1 WO 2014177360A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
controller
drive
valve
temperature
Prior art date
Application number
PCT/EP2014/057320
Other languages
German (de)
French (fr)
Inventor
Friedrich Atschreiter
Andreas Auinger
Clemens Gamsjäger
Christoph Höfer
Gernot Philipp
Gerd Schlager
Original Assignee
Magna Powertrain Ag & Co Kg
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 Magna Powertrain Ag & Co Kg filed Critical Magna Powertrain Ag & Co Kg
Publication of WO2014177360A1 publication Critical patent/WO2014177360A1/en

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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • 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
    • 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
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves

Definitions

  • the present invention relates to a DC drive for a cooling system of a motor vehicle of the type of claim 1.
  • One application of a DC motor within a motor vehicle is thermal management - the drive of an adjustable valve within a cooling system.
  • An adjustable by means of electric drive and motor control coolant flow is known from DE 10 2005 038 185 A1, DE 103 14 526 A1, DE 103 36 955 A1.
  • a fan system and a method for controlling a fan motor is known from DE 10 2005 016 452 A1.
  • a motor with commutator is acted upon by a control unit at a predetermined time regardless of the desired cooling capacity with respect to the control manipulated variable increased makesstellulate for a certain period of time. This counteracts an impurity of the commutator.
  • An electromotive control of the coolant requirement of an internal combustion engine is shown in DE 10 2004 058 864 A1. With increased cooling demand, an additional valve is switched.
  • a circuit for the control of water supply systems is described in DE 101 51 227 C1.
  • An AC motor is driven by utilizing information from the past time history of an input signal.
  • the water pump can work better.
  • the DC drive according to the invention for the cooling system of a motor vehicle is decided by the controller by evaluating the motor current and in the past supplied control signals, which cooling strategy is to be executed.
  • a cooling strategy is selected and carried out in which the drives, which have a negative effect on the life of the commutator, of the motor, can be kept low.
  • the drives which have a negative effect on the life of the commutator, of the motor, can be kept low.
  • Conventional valve timing results in a high frequency of activation since the control attempts to maintain a predetermined high engine temperature via the motor-driven valve.
  • an evaluation of the engine-supplied control takes place, with the aim of determining the present driving situation of the motor vehicle, the operating situation of the internal combustion engine.
  • the engine control system is changed over to a cooling strategy, which manages with a lower control frequency.
  • the city cycle is regulated to an overall lower engine temperature level, which reduces the switching frequency, since the control thresholds, in which an immediate opening of the valve would be necessary, can be set comparatively high.
  • the temperature in the cooling circuit is kept comparatively low (for example due to a higher permissible temperature drop in the cooling circuit). Detection occurs e.g. by means of a timer which, after a predetermined time window, evaluates the number of actuations and, on this basis, makes a cycle decision in the ECU.
  • the figure shows a sequence of the procedure according to the invention, which is carried out by a controller.
  • the controller is in signal communication with a DC motor and causes via appropriate circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The present invention relates to a DC drive for a cooling system of a motor vehicle, consisting of a commuted DC motor, a valve for influencing the coolant flow of an internal combustion engine, which valve ca be actuated by the DC motor, and a controller which can be supplied with a temperature value of the coolant to be controlled by the valve. The controller is connected to a circuit by means of signals to control the motor according to predetermined target temperature values. The target temperature can be selected by means of the control as a function of the switching frequency of the DC motor.

Description

Gleichstromantrieb  DC drive
Die vorliegende Erfindung betrifft einen Gleichstromantrieb für ein Kühlsystem eines Kraftfahrzeuges der Art von Anspruch 1 . The present invention relates to a DC drive for a cooling system of a motor vehicle of the type of claim 1.
Gleichstromantriebe, Antriebsmotore mit klassischer, mechanischer Kommutierung sind kostengünstiger als Motoren mit elektronischer Kommutierung, bürsten- lose Gleichstrommotoren. Nachteil bei mechanisch kommutierten Motoren ist jedoch die geringere Lebensdauer. DC drives, drive motors with classic, mechanical commutation are less expensive than motors with electronic commutation, brushless DC motors. Disadvantage of mechanically commutated motors, however, is the shorter life.
Eine erhöhte Lebensdauer erhält ein Gleichstrommotor durch eine entsprechende Überdimensionierung. Dies bedingt jedoch wiederum höhere Kosten. An extended life is given to a DC motor by an appropriate over-dimensioning. However, this in turn requires higher costs.
Eine Anwendung eines Gleichstrommotors innerhalb eines Kraftfahrzeuges ist das Thermalmanagement - der Antrieb eines verstellbaren Ventils innerhalb eines Kühlsystems. Ein mittels elektrischem Antrieb und Motorsteuerung verstellbarer Kühlmittelstrom ist aus der DE 10 2005 038 185 A1 , der DE 103 14 526 A1 , der DE 103 36 955 A1 bekannt. One application of a DC motor within a motor vehicle is thermal management - the drive of an adjustable valve within a cooling system. An adjustable by means of electric drive and motor control coolant flow is known from DE 10 2005 038 185 A1, DE 103 14 526 A1, DE 103 36 955 A1.
Ein Lüftersystem sowie ein Verfahren zur Steuerung eines Lüftermotors ist aus der DE 10 2005 016 452 A1 bekannt. Ein Motor mit Kommutator wird von einer Steuereinheit zu einem vorbestimmten Zeitpunkt unabhängig von der gewünschten Kühlleistung mit einer gegenüber der Regel-Stellgröße erhöhten Reinigungsstellgröße für eine bestimmte Zeitdauer beaufschlagt. Dies wirkt einer Verpestung des Kommutators entgegen. Eine elektromotorische Steuerung des Kühlmittelbedarfs einer Brennkraftmaschine zeigt die DE 10 2004 058 864 A1 . Bei erhöhtem Kühlbedarf wird ein Zusatzventil geschaltet. A fan system and a method for controlling a fan motor is known from DE 10 2005 016 452 A1. A motor with commutator is acted upon by a control unit at a predetermined time regardless of the desired cooling capacity with respect to the control manipulated variable increased Reinigungsstellgröße for a certain period of time. This counteracts an impurity of the commutator. An electromotive control of the coolant requirement of an internal combustion engine is shown in DE 10 2004 058 864 A1. With increased cooling demand, an additional valve is switched.
Eine Schaltung für die Steuerung von Wasserversorgungsanlagen beschreibt die DE 101 51 227 C1 . Ein Wechselstrommotor wird unter Ausnutzung von Informationen aus dem zurückliegenden Zeitverlauf eines Eingangssignals angesteuert. Die Wasserpumpe kann so optimaler arbeiten. A circuit for the control of water supply systems is described in DE 101 51 227 C1. An AC motor is driven by utilizing information from the past time history of an input signal. The water pump can work better.
Es ist eine Aufgabe der vorliegenden Erfindung, einen Gleichstromantrieb in gegenüber den bekannten Lösungen verbesserter Form zu schaffen. It is an object of the present invention to provide a DC drive in an improved form over known solutions.
Die Lösung der vorstehend genannten Aufgabe erfolgt durch einen Gleichstro- mantrieb mit den Merkmalen des Anspruchs 1 . Weiterbildungen ergeben sich aus den Unteransprüchen. The solution to the above object is achieved by a direct current drive with the features of claim 1. Further developments emerge from the subclaims.
Der erfindungsgemäße Gleichstromantrieb für das Kühlsystem eines Kraftfahrzeuges wird durch die Steuerung durch Auswertung der dem Motor aktuell und in der Vergangenheit zugeführten Steuersignale entschieden, welche Kühlungsstrategie ausgeführt werden soll. Es wird eine Kühlstrategie gewählt und ausgeführt, bei welcher die sich negativ auf die Lebensdauer des Kommutators, des Motors auswirkenden Ansteuerungen verringert, gering gehalten werden können. Im Stadtzyklus oder innerhalb eines Staus besteht ein erhöhter Kühlungsbedarf. Insbesondere, da die Fahrtwind Wirkung im Wärmetauschersystem fehlt bzw. wegen der geringen Geschwindigkeit sehr eingeschränkt ist. Bei einer herkömmlichen Ventilsteuerung ergibt sich eine hohe Häufigkeit in der Ansteuerung, da die Steuerung über das motorgetriebene Ventil eine vorgegebene hohe Motortempe- ratur zu halten versucht. Erfindungsgemäß erfolgt eine Auswertung der dem Motor zugeführten Ansteue- rung, mit dem Ziel, die vorliegende Fahrsituation des Kraftfahrzeuges, die Betriebssituation des Verbrennungsmotors zu ermitteln. Bei einer erhöhten Ansteue- rung, Häufigkeit von Ventilbetätigungen, insbesondere in Verbindung mit der Ermittlung der Fahrgeschwindigkeit und ggf. weiterer Signale des Fahrzeuges, der Motorsteuerung wird auf eine Kühlstrategie gewechselt, welche mit einer geringeren Steuerhäufigkeit auskommt. Im Falle des Stadtzyklus wird auf ein insgesamt niedrigeres Motortemperaturniveau geregelt, was die Schalthäufigkeit reduziert, da die Regelschwellen, bei der ein sofortiges Öffnen des Ventils nötig wäre, vergleichsweise hoch angesetzt werden kann. The DC drive according to the invention for the cooling system of a motor vehicle is decided by the controller by evaluating the motor current and in the past supplied control signals, which cooling strategy is to be executed. A cooling strategy is selected and carried out in which the drives, which have a negative effect on the life of the commutator, of the motor, can be kept low. In the city cycle or within a congestion, there is an increased need for cooling. In particular, since the wind is missing effect in the heat exchanger system or is very limited because of the low speed. Conventional valve timing results in a high frequency of activation since the control attempts to maintain a predetermined high engine temperature via the motor-driven valve. According to the invention, an evaluation of the engine-supplied control takes place, with the aim of determining the present driving situation of the motor vehicle, the operating situation of the internal combustion engine. In the case of an increased activation, frequency of valve actuations, in particular in connection with the determination of the driving speed and possibly further signals of the vehicle, the engine control system is changed over to a cooling strategy, which manages with a lower control frequency. In the case of the city cycle is regulated to an overall lower engine temperature level, which reduces the switching frequency, since the control thresholds, in which an immediate opening of the valve would be necessary, can be set comparatively high.
Bei der erfindungsgemäßen Lösung wird somit auf Basis der relevanten Aktuie- rungen entschieden, welche Strategie verfolgt wird. Bei der im Beispiel genannten erhöhten Lastwechselzahl (Stadtzyklus und Stausituation) wird die Temperatur im Kühlkreis vergleichsweise niedrig gehalten (z.B. durch höheren zulässigen Temperaturabfall im Kühlkreislauf). Die Detektion erfolgt z.B. mittels Timer welcher, nach einem vorgegeben Zeitfenster die Anzahl der Aktuierungen auswertet und auf dieser Basis einen Zyklenentscheid in der ECU trifft. In the solution according to the invention, it is thus decided which strategy is pursued on the basis of the relevant actuations. In the case of the increased load change number (city cycle and congestion situation) mentioned in the example, the temperature in the cooling circuit is kept comparatively low (for example due to a higher permissible temperature drop in the cooling circuit). Detection occurs e.g. by means of a timer which, after a predetermined time window, evaluates the number of actuations and, on this basis, makes a cycle decision in the ECU.
Durch diese Maßnahme wird die Betriebszeit des Aktuators, des das Ventil treibenden Motors, abhängig von der Zyklenhäufigkeit, stark verringert, was signifikanten Einfluss auf dessen Baugröße und Kosten hat. By this measure, the operating time of the actuator, the valve driving motor, depending on the cycle frequency, greatly reduced, which has a significant impact on its size and cost.
Die Figur zeigt einen Ablauf des erfindungsgemäßen Vorgehens, welches von einer Steuerung ausgeführt wird. Die Steuerung steht mit einem Gleichstrommotor in Signalverbindung und bewirkt über entsprechende Schaltungen dessen The figure shows a sequence of the procedure according to the invention, which is carried out by a controller. The controller is in signal communication with a DC motor and causes via appropriate circuits
Bestromung - in Abhängigkeit von Temperatursignalen , der Temperatur des Kühlmittels. Es erfolgt eine Detektion der Aktuierungshäufigkeit DAH, eine Feststellung, wie häufig und/oder wie lange der Motor bestromt, das Ventil geöffnet und geschlossen bzw. die Ventilposition verändert wird. Ist bei gegebener Aktuierungshäufigkeit eine Änderung der Temperaturregelungsstrategie dahingehend möglich, dass die Aktuierungshäufigkeit gesenkt werden kann, so wird von einer gegebenen Regelstrategie RS1 auf eine alternative Regelstrategie RS2 gewechselt. Diese regelt insgesamt auf ein niedrigeres Temperaturniveau, so dass das Ventil weniger oft verstellt werden muss. Dies hat seinen Grund darin, da die Regelschwelle um die einzuhaltende Soll-Temperatur bei einer niedrigeren Motortemperatur größer gewählt sein kann. Energizing - depending on temperature signals, the temperature of the coolant. There is a detection of the Aktuierungshäufigkeit DAH, a statement of how often and / or how long the motor is energized, the valve is opened and closed or the valve position is changed. If, given the frequency of actuation, a change in the temperature control strategy is possible to the effect that the frequency of actuation can be reduced, then a change is made from a given control strategy RS1 to an alternative control strategy RS2. This regulates on the whole to a lower temperature level, so that the valve must be adjusted less often. This is due to the fact that the control threshold may be greater by the target temperature to be maintained at a lower engine temperature.

Claims

Ansprüche claims
1 . Gleichstromantrieb für ein Kühlsystem eines Kraftfahrzeuges, bestehend aus einem Gleichstrommotor mit Kommutierung, einem vom Gleichstrommotor betätigbaren Ventil zur Beeinflussung des Kühlmittelstromes einer Verbrennungskraftmaschine, einer Steuerung, der ein Temperaturwert des vom Ventil zu steuernden Kühlmittels zufürbar ist, wobei die Steuerung mit einer Schaltung in Sig- nalverbindung steht, um den Motor entsprechend vorgegebener Soll- Temperaturwerte anzusteuern, wobei durch die Steuerung die Soll-Temperatur in Abhängigkeit der Schalthäufigkeit des Gleichstrommotors wählbar ist. 1 . DC drive for a cooling system of a motor vehicle, comprising a DC motor with commutation, a DC motor operable valve for influencing the coolant flow of an internal combustion engine, a controller to which a temperature value of the valve to be controlled coolant zufürbar, the controller with a circuit in Sig Nalverbindung stands to control the motor according to predetermined setpoint temperature values, the desired temperature as a function of the switching frequency of the DC motor can be selected by the controller.
2. Gleichstromantrieb nach Anspruch , 2. DC drive according to claim,
durch die Steuerung wird eine Soll-Temperatur gewählt, deren Regelstrategie eine minimierte Anzahl von Schalthäufigkeiten ermöglicht. The controller selects a setpoint temperature whose control strategy allows a minimized number of switching frequencies.
3. Gleichstromantrieb nach Anspruch 1 oder 2, 3. DC drive according to claim 1 or 2,
durch die Steuerung wird die Betriebssituation der Verbrennungskraftmaschine, des Fahrzeuges bestimmt und in deren Abhängigkeit eine Soll-Temperatur gewählt. by the controller, the operating situation of the internal combustion engine, the vehicle is determined and selected in dependence of a target temperature.
4. Gleichstromantrieb wenigstens nach Anspruch 1 , 4. DC drive at least according to claim 1,
durch die Steuerung erfolgt eine Auswertung der zur Regelung auf eine gegebene Soll-Temperatur ausgeführten Schalthäufigkeiten. the controller performs an evaluation of the switching frequencies executed for regulation to a given nominal temperature.
PCT/EP2014/057320 2013-04-30 2014-04-10 Dc drive WO2014177360A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102013207968.0 2013-04-30
DE102013207968 2013-04-30
DE102013210288.7 2013-06-04
DE201310210288 DE102013210288B3 (en) 2013-04-30 2013-06-04 Direct current drive for cooling system of motor vehicle, has direct current motor with commutation, valve for influencing coolant flow of internal combustion engine, and controller which feeds temperature value of coolant by valve

Publications (1)

Publication Number Publication Date
WO2014177360A1 true WO2014177360A1 (en) 2014-11-06

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ID=51019343

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PCT/EP2014/057320 WO2014177360A1 (en) 2013-04-30 2014-04-10 Dc drive

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DE (1) DE102013210288B3 (en)
WO (1) WO2014177360A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889211A2 (en) * 1997-07-02 1999-01-07 Nippon Thermostat Co., Ltd. Cooling control system and cooling control method for engine
DE10105666A1 (en) * 2000-02-10 2001-09-06 Denso Corp Cooling device for a liquid-cooled internal combustion engine
DE10151227C1 (en) 2001-10-16 2003-06-18 Hans Gustat Circuit for controlling water supply systems, especially domestic or similar local systems, has controller controlling electrical power fed to alternating current motor via rising edge controller
DE10314526A1 (en) 2003-03-31 2004-10-21 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Coolant pump, in particular flow-cooled electrical coolant pump with integrated directional valve, and method therefor
DE10336955A1 (en) 2003-08-07 2005-02-24 Robert Bosch Gmbh Method and device for controlling an electric fan motor
GB2406393A (en) * 2003-09-25 2005-03-30 Detroit Diesel Corp Controlling cooling fan for compression ignition internal combustion engine
DE102004058864A1 (en) 2004-12-06 2006-06-08 Att Automotivethermotech Gmbh Motor vehicle`s cooling and heating circuit operating method, involves reducing pressure difference in heat exchanger circuit or current branches, so that auxiliary valve is closed during reduced cooling or heating requirements
DE102005016452A1 (en) 2005-04-11 2006-10-12 Robert Bosch Gmbh Fan system and method for controlling a fan motor
DE102005038185A1 (en) 2005-08-12 2007-02-15 Daimlerchrysler Ag Controller for coolant flow in internal combustion engine has sealing element that completely interrupts coolant flow through basic engine in closed position and fully enables it in open position

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3915966B2 (en) * 2001-10-15 2007-05-16 日本サーモスタット株式会社 Control method of electronic control thermostat

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0889211A2 (en) * 1997-07-02 1999-01-07 Nippon Thermostat Co., Ltd. Cooling control system and cooling control method for engine
DE10105666A1 (en) * 2000-02-10 2001-09-06 Denso Corp Cooling device for a liquid-cooled internal combustion engine
DE10151227C1 (en) 2001-10-16 2003-06-18 Hans Gustat Circuit for controlling water supply systems, especially domestic or similar local systems, has controller controlling electrical power fed to alternating current motor via rising edge controller
DE10314526A1 (en) 2003-03-31 2004-10-21 Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt Coolant pump, in particular flow-cooled electrical coolant pump with integrated directional valve, and method therefor
DE10336955A1 (en) 2003-08-07 2005-02-24 Robert Bosch Gmbh Method and device for controlling an electric fan motor
GB2406393A (en) * 2003-09-25 2005-03-30 Detroit Diesel Corp Controlling cooling fan for compression ignition internal combustion engine
DE102004058864A1 (en) 2004-12-06 2006-06-08 Att Automotivethermotech Gmbh Motor vehicle`s cooling and heating circuit operating method, involves reducing pressure difference in heat exchanger circuit or current branches, so that auxiliary valve is closed during reduced cooling or heating requirements
DE102005016452A1 (en) 2005-04-11 2006-10-12 Robert Bosch Gmbh Fan system and method for controlling a fan motor
DE102005038185A1 (en) 2005-08-12 2007-02-15 Daimlerchrysler Ag Controller for coolant flow in internal combustion engine has sealing element that completely interrupts coolant flow through basic engine in closed position and fully enables it in open position

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