WO2002077426A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
WO2002077426A1
WO2002077426A1 PCT/DE2002/000810 DE0200810W WO02077426A1 WO 2002077426 A1 WO2002077426 A1 WO 2002077426A1 DE 0200810 W DE0200810 W DE 0200810W WO 02077426 A1 WO02077426 A1 WO 02077426A1
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WO
WIPO (PCT)
Prior art keywords
heat exchanger
control valve
heat
flow
cooling
Prior art date
Application number
PCT/DE2002/000810
Other languages
German (de)
French (fr)
Inventor
Roland Schmidt
Gerta Rocklage-Marliani
Dirk Vollmer
Nizar Taghouti
Claude Berling
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 WO2002077426A1 publication Critical patent/WO2002077426A1/en

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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
    • 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
    • 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
    • F01P2025/08—Temperature
    • F01P2025/40—Oil temperature
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater

Definitions

  • the invention is based on a heat exchanger according to the preamble of claim 1.
  • Thermal management of an internal combustion engine and a vehicle i.e. the cooling and heating of units and devices to an optimal operating temperature is of crucial importance for the efficiency and thus for the economy of the “vehicle” system. It is therefore desirable that the devices and units, for example the internal combustion engine of the vehicle, the heating of the passenger compartment reach their optimal operating temperature as quickly as possible and maintain it as far as possible during the entire operation, even in operating areas in which the heat generation in the internal combustion engine is low.
  • a cooling system for a vehicle with an internal combustion engine is known from EP 0 499 071 AI.
  • the cooling system comprises several circuits with assigned heat exchangers.
  • the temperatures of different cooling media are measured and converted into output signals in a central evaluation device processed, through which electrically controllable devices such as speed-controlled pumps, speed-controlled fans, electrically controllable valves and a blind arranged in the air flow path can be controlled.
  • the heat exchanger output or the fan speed is always aligned for all cooling circuits according to the highest demand of one of the cooling circuits.
  • the central heat management ensures that little drive energy is required for pumps and fans to cool and heat the system and that too much thermal energy is not extracted from the system. As a result, the required operating temperatures are quickly reached at startup. Cooling systems of this type are very complex and are composed of a large number of individual components which have to be attached to the vehicle. This is often very difficult due to the cramped installation space.
  • an electrically controllable control valve is arranged on a flow or a return of a heat exchanger, for example a cooler, heating heat exchanger or oil cooler, and combined with this to form a structural unit.
  • a heat exchanger for example a cooler, heating heat exchanger or oil cooler
  • a preassembled heat exchanger unit is produced which can be installed in the motor vehicle with little effort and does not require its own attachment device for the control valve.
  • the logistical effort for the vehicle manufacturer is also reduced.
  • the control valves are controlled in accordance with the requirements of thermal management of an internal combustion engine and a vehicle by a central control unit as a function of the operating and environmental parameters of the internal combustion engine and the cooling circuit.
  • the control valve can advantageously be integrated in the heat exchanger, e.g. by being arranged in a collecting space which serves to distribute the cooling liquid to the cooling channels of the heat exchanger or to collect the cooling liquid after it has passed through the cooling channels.
  • sensors e.g. Temperature sensors and / or pressure sensors can also be integrated in order to record the operating parameters in the vicinity of the control valve.
  • the need-based control of the coolant flows is particularly useful in modern internal combustion engines with further improvements in efficiency, since less heat is generated in these machines, so that in some operating areas a very small amount of heat is available, which is used to heat the passenger compartment, de-icing the windows, and so on Preheating of aggregates and for similar purposes can be used.
  • the control of the coolant circuit of new reciprocating Therefore, internal combustion engines are changing more and more from pure heat dissipation to a targeted heat distribution and at the same time meet the new comfort, consumption and emission requirements.
  • control valves allow continuous adjustment so that the coolant reaches the heat exchangers in precisely metered amounts. According to one embodiment of the invention, therefore, are electrically driven as control valves
  • Proportional valves provided. These valves continuously adjust a hydraulic output variable depending on an electrical input variable. By using proportional valves in a cooling circuit, the flow rate of the coolant through the heat exchanger is constantly adjusted.
  • FIG. 1 is a schematic representation of a cooling circuit of a reciprocating piston internal combustion engine
  • Fig. 2 schematically shows a heat exchanger with a control valve as a structural unit
  • FIG. 3 shows a variant of FIG. 2.
  • An example of a cooling liquid circuit 16 u comprises a cooler 20 which is connected to a water pump 18 via a suction line 30. This conveys cooling liquid through an inlet line 34 into a cylinder block 14 of a reciprocating piston internal combustion engine 10. The cooling liquid passes from the cylinder block 14 into the cylinder head 12 and from there flows back into the cooler 20 via a return flow line 26. The cooler 20 is cooled by airflow. If necessary, a fan 24 becomes active in order to supply the cooler 20 with cooling air.
  • a heating heat exchanger 22 is arranged in which a heating heat exchanger 22 is arranged. With the help of a blower, not shown, this heats up a passenger compartment (not shown) and ventilates and defrosts vehicle windows.
  • the cooling fluid exchanger from heating ⁇ 22 flows to the suction line 30 back.
  • Part of the coolant flow is branched off from the cylinder block 14 and returned to the suction line 30 via an oil cooler line 38, in which an oil cooler 36 is arranged.
  • the oil cooler 36 is connected to an oil circuit 40 of the internal combustion engine 10.
  • a bypass line 28 is provided parallel to the cooler 20, which connects the return flow line 26 to the suction line 30.
  • the flow of the coolant through the cooler 20 is determined by a first control valve 42.
  • a second control valve 44 controls
  • control valve 46 the coolant flow through the oil cooler 36 and a fourth control valve 48 the coolant flow through the bypass line 28.
  • the control valves 42, 44, 46 and 48 which are expediently called
  • an electronic control unit 50 which generally has a microprocessor, as a function of operating parameters, vehicle parameters and environmental parameters, as well as their derivations according to time.
  • control valves 42, 44 and 46 are attached either to a flow 54 or to a return 56 of the associated heat exchanger 20, 22, 36, namely the first control valve 42 on the cooler 20, the second control valve 44 on the heating heat exchanger.
  • Control valves 42, 44, 46 form with the respective heat exchangers 20, 22, 36 a unit, so that they need, no additional ⁇ present hold devices. This also reduces the number of parts and the logistical effort.
  • control valves 42, 44, 46 can also advantageously be integrated in the heat exchanger 20, 22, 36, for example in which they are accommodated in a collecting space 58 of the heat exchangers 20, 22, 36 within the contour of the heat exchangers 20, 22, 36 and thus do not require any additional installation space and no additional holding means.
  • FIG. 2 shows an example of the cooler 20 with the first control valve 42, which is housed on the flow 54.
  • FIG. 3 shows a variant in which the first control valve 42 is accommodated in the collecting space 58 of the cooler 20 and is therefore hardly recognizable from the outside.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention relates to a heat exchanger (20, 22, 36) in a cooling liquid circuit (16) of a motor vehicle, comprising electrically controllable control valves (42, 44, 46). According to the invention, a control valve (42, 44, 46) is arranged at the flow (54) or return (56) of said heat exchanger, said control valve and the heat exchanger forming together one constructional unit.

Description

Wärmetauscherheat exchangers
Stand der TechnikState of the art
Die Erfindung geht von einem Wärmetauscher nach dem Oberbe- griff des Anspruchs 1 aus.The invention is based on a heat exchanger according to the preamble of claim 1.
Das Wärmemanagement einer Brennkraftmaschine und eines Fahrzeugs, d.h. das Kühlen und Erwärmen von Aggregaten und Einrichtungen auf eine optimale Betriebstemperatur, ist für den Wirkungsgrad und damit für die Wirtschaftlichkeit des Systems „Fahrzeug" von entscheidender Bedeutung. Es ist daher wünschenswert, dass die Einrichtungen und Aggregate, z.B. die Brennkraftmaschine des Fahrzeugs, die Heizung des Fahrgastraums, möglichst schnell ihre optimale Betriebstempera- tur erreichen und diese möglichst während des gesamten Betriebs beibehalten, auch in Betriebsbereichen, in denen der Wärmeanfall in der Brennkraftmaschine gering ist.Thermal management of an internal combustion engine and a vehicle, i.e. the cooling and heating of units and devices to an optimal operating temperature is of crucial importance for the efficiency and thus for the economy of the “vehicle” system. It is therefore desirable that the devices and units, for example the internal combustion engine of the vehicle, the heating of the passenger compartment reach their optimal operating temperature as quickly as possible and maintain it as far as possible during the entire operation, even in operating areas in which the heat generation in the internal combustion engine is low.
Aus der EP 0 499 071 AI ist eine Kühlanlage für ein Fahrzeug mit einem Verbrennungsmotor bekannt. Die Kühlanlage umfasst mehrere Kreisläufe mit zugeordneten Wärmetauschern. Die Temperaturen unterschiedlicher Kühlmedien werden gemessen und in einer zentralen Auswerteeinrichtung zu Ausgangssignalen verarbeitet, durch die elektrisch ansteuerbare Einrichtungen wie drehzahlgeregelte Pumpen, drehzahlgeregelte Lüfter, elektrisch ansteuerbare Ventile und eine im Luftströmungsweg angeordnete Jalousie ansteuerbar sind. Die Wärmetauscherlei- stung bzw. die Lüfterdrehzahl wird für alle Kühlkreisläufe stets nach dem höchsten Bedarf eines der Kühlkreisläufe ausgerichtet. Durch das zentrale Wärmemanagement wird erreicht, dass für die Kühlung und Erwärmung des Systems wenig Antriebsenergie für Pumpen und Lüfter aufzuwenden ist und dem System nicht zu viel Wärmeenergie entzogen wird. Infolgedessen werden beim Start schnell die erforderlichen Betriebstemperaturen erreicht. Derartige Kühlsysteme sind sehr komplex und werden aus sehr vielen einzelnen Bauteilen zusammengesetzt, die am Fahrzeug befestigt werden müssen. Dies ist wegen des beengten Bauraums oft sehr schwierig.A cooling system for a vehicle with an internal combustion engine is known from EP 0 499 071 AI. The cooling system comprises several circuits with assigned heat exchangers. The temperatures of different cooling media are measured and converted into output signals in a central evaluation device processed, through which electrically controllable devices such as speed-controlled pumps, speed-controlled fans, electrically controllable valves and a blind arranged in the air flow path can be controlled. The heat exchanger output or the fan speed is always aligned for all cooling circuits according to the highest demand of one of the cooling circuits. The central heat management ensures that little drive energy is required for pumps and fans to cool and heat the system and that too much thermal energy is not extracted from the system. As a result, the required operating temperatures are quickly reached at startup. Cooling systems of this type are very complex and are composed of a large number of individual components which have to be attached to the vehicle. This is often very difficult due to the cramped installation space.
Vorteile der ErfindungAdvantages of the invention
Nach der Erfindung ist an einem Vorlauf oder einem Rücklauf eines Wärmetauschers, beispielsweise eines Kühlers, Heizungswärmetauschers oder Ölkühlers, ein elektrisch ansteuerbares Regelventil angeordnet und mit diesem zu einer Baueinheit zusammengefasst. Durch das Zusammenfassen funktional zusammenwirkender Komponenten wie des Wärmetauschers mit dem elektrisch angetriebenen Regelventil und gegebenenfalls der Sensorik entsteht eine vormontierte Wärmetauschereinheit, die mit geringem Aufwand ins Kraftfahrzeug montiert werden kann und keine eigene Anbauvorrichtung für das Regelventil erfordert. Ferner verringert sich der logistische Aufwand für den Fahrzeughersteller. Die Regelventile werden nach den Vorgaben eines Wärmemanagements einer Brennkraftmaschine und eines Fahrzeugs von einer zentralen Steuereinheit in Abhängigkeit der Betriebs- und Umgebungsparameter der Brennkraftmaschine und des Kühlkreis- laufs angesteuert. Sie bestimmen sehr direkt den Durchfluss durch den Wärmetauscher, so dass die an den einzelnen Wärmequellen, z.B. an der Brennkraftmaschine, einer Klimaanlage, einem Getriebe, einem Turbolader usw., anfallende Wärme bedarfsgerecht nach den bestehenden Prioritäten optimal ver- teilt und überschüssige Wärme abgeführt werden kann. Aus den vorgefertigten Standardkomponenten lassen sich je nach Anwendungsfall mehr oder weniger komplexe Kuhlflussigkeitskreislaufe zusammenstellen.According to the invention, an electrically controllable control valve is arranged on a flow or a return of a heat exchanger, for example a cooler, heating heat exchanger or oil cooler, and combined with this to form a structural unit. By combining functionally interacting components such as the heat exchanger with the electrically driven control valve and possibly the sensor system, a preassembled heat exchanger unit is produced which can be installed in the motor vehicle with little effort and does not require its own attachment device for the control valve. The logistical effort for the vehicle manufacturer is also reduced. The control valves are controlled in accordance with the requirements of thermal management of an internal combustion engine and a vehicle by a central control unit as a function of the operating and environmental parameters of the internal combustion engine and the cooling circuit. They determine the flow through the heat exchanger very directly, so that the heat generated at the individual heat sources, such as the internal combustion engine, an air conditioning system, a gearbox, a turbocharger, etc., is optimally distributed according to the existing priorities and excess heat is dissipated can. Depending on the application, more or less complex cooling fluid circuits can be put together from the prefabricated standard components.
Das Regelventil kann in vorteilhafter Weise in den Wärmetauscher integriert sein, z.B. indem es in einem Sammelraum angeordnet ist, der zum Verteilen der Kühlflüssigkeit auf die Kühlkanäle des Wärmetauschers oder zum Sammeln der Kühlflüssigkeit nach dem Durchlauf durch die Kühlkanäle dient. Gege- benenfalls können Sensoren, z.B. Temperatursensoren und/oder Drucksensoren, ebenfalls integriert werden, um die Betriebsparameter in der Nähe des Regelventils zu erfassen.The control valve can advantageously be integrated in the heat exchanger, e.g. by being arranged in a collecting space which serves to distribute the cooling liquid to the cooling channels of the heat exchanger or to collect the cooling liquid after it has passed through the cooling channels. If necessary, sensors, e.g. Temperature sensors and / or pressure sensors can also be integrated in order to record the operating parameters in the vicinity of the control valve.
Die bedarfsgerechte Regelung der Kühlmittelströme ist beson- ders bei modernen Brennkraftmaschinen mit weiter verbesserten Wirkungsgraden sinnvoll, da bei diesen Maschinen weniger Wärmeleistung anfällt, so dass in einigen Betriebsbereichen eine sehr geringe Wärmemenge zur Verfügung steht, die zum Heizen des Fahrgastraums, Enteisen der Scheiben, zum Vorwär- men von Aggregaten und zu ähnlichen Zwecken genutzt werden kann. Die Regelung des Kühlmittelkreislaufs neuer Hubkolben- brennkraftmaschinen wandelt sich deshalb immer mehr von der reinen Wärmeabfuhr zu einer gezielten Wärmeverteilung und entspricht gleichzeitig den neuen Komfort-, Verbrauchs- und Emissionsanforderungen .The need-based control of the coolant flows is particularly useful in modern internal combustion engines with further improvements in efficiency, since less heat is generated in these machines, so that in some operating areas a very small amount of heat is available, which is used to heat the passenger compartment, de-icing the windows, and so on Preheating of aggregates and for similar purposes can be used. The control of the coolant circuit of new reciprocating Therefore, internal combustion engines are changing more and more from pure heat dissipation to a targeted heat distribution and at the same time meet the new comfort, consumption and emission requirements.
Außerdem ist es bei einem intelligenten Wärmemanagement wichtig, dass die Regelventile eine kontinuierliche Verstellung zulassen, damit das Kühlmittel genau dosiert zu den Wärmetauschern gelangt. Nach einer Ausgestaltung der Erfin- d ng sind deshalb als Regelventile elektrisch angetriebeneIn addition, with intelligent heat management, it is important that the control valves allow continuous adjustment so that the coolant reaches the heat exchangers in precisely metered amounts. According to one embodiment of the invention, therefore, are electrically driven as control valves
Proportionalventile vorgesehen. Diese Ventile verstellen eine hydraulische Ausgangsgröße stetig in Abhängigkeit einer elektrischen Eingangsgröße. Durch den Einsatz von Proportionalventilen in einem Kühlkreislauf wird die Durchflussmenge des Kühlmittels durch den Wärmetauscher stetig verstellt.Proportional valves provided. These valves continuously adjust a hydraulic output variable depending on an electrical input variable. By using proportional valves in a cooling circuit, the flow rate of the coolant through the heat exchanger is constantly adjusted.
Zeichnungdrawing
Weitere Vorteile ergeben sich aus der folgenden Zeichnungs- beschreibung. In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch ein- zeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Es zeigen :Further advantages result from the following description of the drawing. Exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations. Show it :
Fig. 1 eine schematische Darstellung eines Kühlkreislaufs einer Hubkolbenbrennkraftmaschine,1 is a schematic representation of a cooling circuit of a reciprocating piston internal combustion engine,
Fig. 2 einen Wärmetauscher mit einem Regelventil als Baueinheit schematisch dargestellt undFig. 2 schematically shows a heat exchanger with a control valve as a structural unit and
Fig. 3 eine Variante zu Fig. 2.3 shows a variant of FIG. 2.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Ein beispielhaft dargestellter Kuhlflussigkeitskreislauf 16 u fasst einen Kühler 20, der über eine Saugleitung 30 mit einer Wasserpumpe 18 verbunden ist. Diese fördert durch eine Einlassleitung 34 Kühlflüssigkeit in einen Zylinderblock 14 einer Hubkolbenbrennkraftmaschine 10. Die Kühlflüssigkeit gelangt vom Zylinderblock 14 in den Zylinderkopf 12 und strömt von dort über eine Rückströmleitung 26 in den Kühler 20 zurück. Der Kühler 20 wird durch Fahrtwind gekühlt. Im Bedarfsfall wird ein Lüfter 24 aktiv, um den Kühler 20 mit Kühlluft zu versorgen.An example of a cooling liquid circuit 16 u comprises a cooler 20 which is connected to a water pump 18 via a suction line 30. This conveys cooling liquid through an inlet line 34 into a cylinder block 14 of a reciprocating piston internal combustion engine 10. The cooling liquid passes from the cylinder block 14 into the cylinder head 12 and from there flows back into the cooler 20 via a return flow line 26. The cooler 20 is cooled by airflow. If necessary, a fan 24 becomes active in order to supply the cooler 20 with cooling air.
Von der Rück'stromleitung 26 zweigt eine Heizleitung 32 ab, in der ein Heizwärmetauscher 22 angeordnet ist. Dieser sorgt mit Hilfe eines nicht näher dargestellten Gebläses für die Erwärmung eines nicht dargestellten Fahrgastraums sowie zum Belüften und Enteisen von Fahrzeugscheiben. Vom Heizwärme¬ tauscher 22 strömt die Kühlflüssigkeit zur Saugleitung 30 zurück. Vom Zylinderblock 14 wird ein Teil des Kühlmittelstroms abgezweigt und über eine Ölkühlerleitung 38, in der ein Ölkühler 36 angeordnet ist, zur Saugleitung 30 zurückgeführt. Der Ölkühler 36 ist an einen Ölkreislauf 40 der Brennkraft a- 5 schine 10 angeschlossen. Schließlich ist eine Bypassleitung 28 parallel zum Kühler 20 vorgesehen, die die Rückströmleitung 26 mit der Saugleitung 30 verbindet. Der Durchfluss der Kühlflüssigkeit durch den Kühler 20 wird von einem ersten Regelventil 42 bestimmt. Ein zweites Regelventil 44 steuertFrom the return 'flow pipe 26 branches off a heating line 32 in which a heating heat exchanger 22 is arranged. With the help of a blower, not shown, this heats up a passenger compartment (not shown) and ventilates and defrosts vehicle windows. The cooling fluid exchanger from heating ¬ 22 flows to the suction line 30 back. Part of the coolant flow is branched off from the cylinder block 14 and returned to the suction line 30 via an oil cooler line 38, in which an oil cooler 36 is arranged. The oil cooler 36 is connected to an oil circuit 40 of the internal combustion engine 10. Finally, a bypass line 28 is provided parallel to the cooler 20, which connects the return flow line 26 to the suction line 30. The flow of the coolant through the cooler 20 is determined by a first control valve 42. A second control valve 44 controls
10 den Kühlflüssigkeitsdurchfluss durch den Heizwärmetauscher 22, ein drittes Regelventil 46 den Kühlmitteldurchfluss durch den Ölkühler 36 und ein viertes Regelventil 48 den Kühlflüssigkeitsdurchfluss durch die Bypassleitung 28. Die Regelventile 42, 44, 46 und 48, die zweckmäßigerweise als10 the coolant flow through the heat exchanger 22, a third control valve 46 the coolant flow through the oil cooler 36 and a fourth control valve 48 the coolant flow through the bypass line 28. The control valves 42, 44, 46 and 48, which are expediently called
15 elektrisch angetriebene Proportionalventile ausgebildet sind, werden von einer elektronischen Steuereinheit 50, die in der Regel einen Mikroprozessor aufweist, in Abhängigkeit von Betriebsparametern, Fahrzeugparametern und Umgebungsparametern sowie deren Ableitungen nach der Zeit im Sinne ei-15 electrically driven proportional valves are designed, are controlled by an electronic control unit 50, which generally has a microprocessor, as a function of operating parameters, vehicle parameters and environmental parameters, as well as their derivations according to time.
20. nes Wärmemanagements über Signalleitungen 52 angesteuert. Die Regelventile 42, 44 und 46 sind entweder an einem Vorlauf 54 oder an einem Rücklauf 56 des zugeordneten Wärmetauschers 20, 22, 36 angebracht, und zwar das erste Regelventil 42 am Kühler 20, das zweite Regelventil 44 am Heizwärmetau- 20th Nes thermal management controlled via signal lines 52. The control valves 42, 44 and 46 are attached either to a flow 54 or to a return 56 of the associated heat exchanger 20, 22, 36, namely the first control valve 42 on the cooler 20, the second control valve 44 on the heating heat exchanger.
25 scher 22 und das dritte Regelventil 46 am Ölkühler 36. Die25 shear 22 and the third control valve 46 on the oil cooler 36. Die
Regelventile 42, 44, 46 bilden mit den zugehörigen Wärmetauschern 20, 22, 36 eine Baueinheit, so dass sie keine zusätz¬ lichen Haltevorrichtungen benötigen. Ferner wird dadurch die Teilevielfalt und der logistische Aufwand verringert. DieControl valves 42, 44, 46 form with the respective heat exchangers 20, 22, 36 a unit, so that they need, no additional ¬ present hold devices. This also reduces the number of parts and the logistical effort. The
30 Regelventile 42, 44, 46 können auch in vorteilhafter Weise in den Wärmetauscher 20, 22, 36 integriert werden, z.B. in- dem sie in einem Sammelraum 58 der Wärmetauscher 20, 22, 36 innerhalb der Kontur der Wärmetauscher 20, 22, 36 untergebracht sind und somit keinen zusätzlichen Bauraum und keine zusätzlichen Haltemittel beanspruchen.30 control valves 42, 44, 46 can also advantageously be integrated in the heat exchanger 20, 22, 36, for example in which they are accommodated in a collecting space 58 of the heat exchangers 20, 22, 36 within the contour of the heat exchangers 20, 22, 36 and thus do not require any additional installation space and no additional holding means.
Fig. 2 zeigt beispielhaft den Kühler 20 mit dem ersten Regelventil 42, das am Vorlauf 54 untergebracht ist. Fig. 3 zeigt eine Variante, bei der in dem Sammelraum 58 des Kühlers 20 das erste Regelventil 42 untergebracht ist und somit von außen kaum erkennbar ist. Fig. 2 shows an example of the cooler 20 with the first control valve 42, which is housed on the flow 54. FIG. 3 shows a variant in which the first control valve 42 is accommodated in the collecting space 58 of the cooler 20 and is therefore hardly recognizable from the outside.
Bezugs zeichenReference sign
10 Hubkolbenbrennkraftmaschine 50 Steuereinheit10 reciprocating piston internal combustion engine 50 control unit
12 Zylinderkopf 52 Signalleitung12 cylinder head 52 signal line
14 Zylinderblock 54 Vorlauf14 cylinder block 54 flow
16 Kuhlflussigkeitskreislauf 56 Rücklauf16 Cooling liquid circuit 56 Return
18 Wasserpumpe 58 Sammelraum18 Water pump 58 collecting room
20 Kühler20 coolers
22 Heizwärmetauscher22 heat exchangers
24 Lüfter24 fans
26 Rückströmleitung26 return line
28 Bypassleitung28 bypass line
30 Saugleitung ■ 30 suction line ■
32 Heizleitung32 heating cable
34 Einlassleitung34 inlet line
36 Ölkühler36 oil cooler
38 Ölkühlerleitung38 Oil cooler line
40 Ölkreislauf40 oil circuit
42 erstes Regelventil42 first control valve
44 zweites Regelventil44 second control valve
46 drittes Regelventil46 third control valve
48 viertes Regelventil 48 fourth control valve

Claims

Ansprüche Expectations
1. Wärmetauscher (20, 22, 36) in einem Kuhlflussigkeitskreislauf eines Kraftfahrzeugs mit elektrisch ansteuerbaren Regelventilen (42, 46, 48), dadurch gekennzeichnet, dass an seinem Vorlauf (54) oder Rücklauf (56) ein Regelventil (42, 46, 48) angeordnet und mit ihm zu einer Baueinheit zusammen- gefasst ist. •1. Heat exchanger (20, 22, 36) in a cooling liquid circuit of a motor vehicle with electrically controllable control valves (42, 46, 48), characterized in that a control valve (42, 46, 48) is located on its flow (54) or return (56) ) is arranged and combined with it to form a structural unit. •
2 . Wärmetauscher ( 20 , 22 , 36 ) nach Anspruch 1 , dadurch gekennzeichnet , dass das Regelventil ( 42 , 46 , 48 ) ein elektrisch angetriebenes Proportionalventil ist .2nd Heat exchanger (20, 22, 36) according to claim 1, characterized in that the control valve (42, 46, 48) is an electrically driven proportional valve.
3. Wärmetauscher (20, 22, 36) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Regelventil (42, 46, 48) in dem Wärmetauscher (20, 22, 36) integriert ist .3. Heat exchanger (20, 22, 36) according to one of the preceding claims, characterized in that the control valve (42, 46, 48) is integrated in the heat exchanger (20, 22, 36).
4. Wärmetauscher (20, 22, 36) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Regelventil (42, 46, 48) als Dreiwegeventil ausgebildet ist und eine im Wärmetauscher (20, 22, 36) integrierte Bypassleitung <28) steuert. 4. Heat exchanger (20, 22, 36) according to one of the preceding claims, characterized in that the control valve (42, 46, 48) is designed as a three-way valve and controls a bypass line <28) integrated in the heat exchanger (20, 22, 36) ,
PCT/DE2002/000810 2001-03-21 2002-03-06 Heat exchanger WO2002077426A1 (en)

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GB2491595A (en) * 2011-06-07 2012-12-12 Gm Global Tech Operations Inc Engine cooling apparatus comprising a valve provided in a radiator bypass line

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GB2491595A (en) * 2011-06-07 2012-12-12 Gm Global Tech Operations Inc Engine cooling apparatus comprising a valve provided in a radiator bypass line

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