EP2123141A2 - Control appliance for using in the engine compartment or in the transmission of a motor vehicle and cooling system for such a control appliance - Google Patents

Control appliance for using in the engine compartment or in the transmission of a motor vehicle and cooling system for such a control appliance

Info

Publication number
EP2123141A2
EP2123141A2 EP08734392A EP08734392A EP2123141A2 EP 2123141 A2 EP2123141 A2 EP 2123141A2 EP 08734392 A EP08734392 A EP 08734392A EP 08734392 A EP08734392 A EP 08734392A EP 2123141 A2 EP2123141 A2 EP 2123141A2
Authority
EP
European Patent Office
Prior art keywords
control device
transmission
engine
transmission fluid
line section
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.)
Ceased
Application number
EP08734392A
Other languages
German (de)
French (fr)
Inventor
Andreas VÖGERL
Gerhard Bauer
Jürgen Henniger
Uwe Trenner
Helmut Karrer
Alexander Wenk
Marion Gebhardt
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.)
Conti Temic Microelectronic GmbH
Original Assignee
Conti Temic Microelectronic 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 Conti Temic Microelectronic GmbH filed Critical Conti Temic Microelectronic GmbH
Publication of EP2123141A2 publication Critical patent/EP2123141A2/en
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20845—Modifications to facilitate cooling, ventilating, or heating for automotive electronic casings
    • H05K7/20872—Liquid coolant without phase change
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
    • F16H61/0006—Electronic control units for transmission control, e.g. connectors, casings or circuit boards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature

Definitions

  • Control unit for use in the engine compartment or in the transmission of a motor vehicle and cooling arrangement for such a control unit
  • the invention relates to a control unit for use in the engine compartment or in the transmission of a motor vehicle according to the preamble of claim 1. Furthermore, the invention relates to a cooling arrangement for such a control device.
  • control units in particular engine control units or transmission control units, are installed on site on the engine or in the transmission in order to save space.
  • control units as regards their tightness, mechanical robustness and temperature resistance, very high.
  • Gear oil reaches in known engines temperatures up to, for example, 155 ° C.
  • engine or transmission fluid in particular oil, which is present in an engine or transmission fluid reservoir of an automobile engine, has a temperature which is significantly below the temperature limit for typical electronic components.
  • About the line section for the engine or transmission fluid such Motor standing. Transmission fluid are guided. Due to the thermal coupling to the housing portion for the electronic components having control means a temperature of the control device is ensured, which keeps the temperature of the control device below its temperature limit. A failure of the control device due to higher temperatures is thereby reliably prevented. Effort for a passive cooling of the control unit can be reduced or avoided altogether.
  • Cooling of the engine or transmission fluid to ensure that this fluid in the delivery section has a sufficiently low temperature can be achieved by appropriate guidance of the fluid over a sufficiently long fluid path in which the fluid has sufficient opportunity to dispense Has heat.
  • a fluid path can be designed in particular spirally.
  • An embodiment according to claim 2 allows a compact Gescousean- order with the line section.
  • a design of the line section according to claim 3 allows a cost-effective design of this and a simple installation.
  • the main body of the line section can simultaneously represent the base plate, which further increases the compactness of the structure of the housing of the control unit.
  • Materials for the main body and / or the lid according to claim 4 have been found to be particularly suitable for guiding engine or transmission fluid with a typical temperature of 120 0 C.
  • the advantages of a cooling arrangement according to claim 5 correspond to those which have already been explained above with reference to the control unit.
  • the engine or transmission fluid pump ensures a safe and special steady flow of engine or transmission fluid through the line section of the housing of the controller.
  • a fluid cooler according to claim 6 ensures a further cooling effect by the engine or transmission fluid, so that it can enter with even lower temperature in the line section of the housing of the control unit.
  • the oil present in the engine compartment or in the transmission can preferably be used according to claim 7.
  • Fig. 1 shows schematically an oil circuit with associated components of a motor vehicle
  • FIG. 2 shows a perspective exploded view of components of a gearbox control unit for use in the engine compartment of the motor vehicle according to FIG. 1;
  • Fig. 3 shows the components of the transmission control unit according to Fig. 2 with the lid mounted.
  • Fig. 1 shows schematically an oil circuit 1 of a motor vehicle.
  • a part of the oil circuit 1 serves as a cooling arrangement for a control unit 2, which is used in an engine compartment of the motor vehicle.
  • a control unit 2 which is used in an engine compartment of the motor vehicle.
  • the control unit 2 can also be used as an engine control unit.
  • the cooling arrangement has a transmission fluid reservoir in the form of an oil sump 3.
  • a transmission fluid pump 4 is used for pumping transmission fluid 5 through a transmission fluid circuit schematically represented in FIG. 1 by arrows.
  • a transmission fluid supply line 6 shown schematically by an arrow in FIG. 1 is connected to an inlet opening 7 of a line section 8 of a housing 9 of the control device 2.
  • a housing section 10 for a control device of the control device 2 that is to say in particular for control electronics.
  • Housing section 10 is mounted.
  • the line section 8 is partially formed by the base plate 11.
  • the line section 8 can also be placed as a separate part on the base plate 11.
  • the line section 8 is designed in two parts with a base body 12 and a lid 13.
  • the base plate 11 is a part of the base body 12 and integrally formed thereon.
  • the cover 13 is fluid-tightly mounted on the base body 12, wherein a leak rate is permissible up to a predetermined tolerance limit.
  • the cover 13 is fluid-tightly connected to the main body 12 in particular by welding, caulking or screwing.
  • the base body 12 and the cover 13 may be made of aluminum, cast or plastic.
  • the inlet opening 7 is embodied in the cover 13 and is in fluid communication with a fluid passage section 14 in the main body 12.
  • the base body 12 has an outlet opening 15, which is also in fluid communication with the channel section 14.
  • Getriebefluid- derivative 16 is in fluid communication with the outlet port 15 of the line section 8.
  • the Getriebefluid- derivative 16 is in turn connected to the oil sump 3 in fluid communication.
  • a fluid cooler 17 is arranged between the transmission fluid pump 4 and the inlet port 7, arranged.
  • the transmission fluid 5 is therefore oil, in particular gear oil.
  • the control unit 2 is mounted on a transmission 18 shown schematically in FIG. Also, the transmission 18 is supplied with the transmission fluid 5. In this case, temperatures of up to 155.degree. C. occur in the gearbox 18, to which the control unit 2 is also exposed. With the transmission fluid 5 also indicated schematically in FIG. 1 clutch 19 is still supplied.
  • a cooling of the control unit 2 is effected as follows: From the oil sump 3, the transmission fluid 5 is conveyed by means of the transmission fluid pump 4 through the fluid cooler 17 to the clutch 19. A part of the conveyed transmission fluid 5 is pumped via the transmission fluid supply line 6 into the inlet opening 7 of the line section 8. The transmission fluid 5 flows through the line section 8 along the housing section 10 of the housing 9 of the control device 2 and flows out of the channel section 14 through the outlet opening 15. In order to favor the transmission fluid flow between the inlet opening and the outlet opening 15, can in the channel section 14 a fireplace effect can be used. The outflowing transmission fluid 5 returns via the Geretefluid- derivative 16 back into the oil sump 3.
  • the transmission fluid 5 has a maximum temperature of about 120 0 C, which is not exceeded. This, compared to the transmission temperatures cooler oil therefore leads to a cooling of the control device in the housing portion 10 of the controller 2. So it is an active Geretefluidkühlung, in particular an active oil cooling, realized.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention relates to a control appliance (2) for using in the engine compartment or in the transmission of a motor vehicle. Said control appliance (2) has a housing (9) comprising a housing section (10) for a control device. Said housing (9) also has a line section (8) for the motor or transmission fluid (5). The line section (8) is thermally coupled to the housing section (10) for the control device. Such a control appliance (2) and a cooling system therefor ensure that the electronic components in the control appliance are cooled such that a pre-determined temperature threshold for the electronic components is not exceeded.

Description

Steuergerät zum Einsatz im Motorraum oder im Getriebe eines Kraftfahrzeugs sowie Kühlanordnung für ein derartiges Steuergerät Control unit for use in the engine compartment or in the transmission of a motor vehicle and cooling arrangement for such a control unit
Die Erfindung betrifft ein Steuergerät zum Einsatz im Motorraum oder im Getriebe eines Kraftfahrzeugs nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung eine Kühlanordnung für ein derartiges Steuergerät.The invention relates to a control unit for use in the engine compartment or in the transmission of a motor vehicle according to the preamble of claim 1. Furthermore, the invention relates to a cooling arrangement for such a control device.
Im Kraftfahrzeugbau sind Steuergeräte, insbesondere Motorsteuergeräte oder Getriebesteuergeräte, vor Ort am Motor oder im Getriebe verbaut, um Platz zu sparen. Dadurch sind die Anforderungen an die Steuergeräte, was deren Dichtheit, mechanische Robustheit und Temperaturbelastbarkeit angeht, sehr hoch. Getriebeöl erreicht bei bekannten Motoren Temperaturen bis zu beispielsweise 155 ° C.In the automotive industry, control units, in particular engine control units or transmission control units, are installed on site on the engine or in the transmission in order to save space. As a result, the requirements for the control units, as regards their tightness, mechanical robustness and temperature resistance, very high. Gear oil reaches in known engines temperatures up to, for example, 155 ° C.
Es ist eine Aufgabe der vorliegenden Erfindung, elektronische Bauteile in Steuergeräten, die derartigen Temperaturen ausgesetzt werden, so zu kühlen, dass eine vorgegebene Temperaturgrenze für die elektronischen Bauteile nicht überschritten wird.It is an object of the present invention to cool electronic components in control devices that are exposed to such temperatures so that a predetermined temperature limit for the electronic components is not exceeded.
Diese Aufgabe ist erfmdungsgemäß gelöst durch ein Steuergerät mit den im Anspruch 1 angegebenen Merkmalen.This object is achieved according to the invention by a control unit having the features specified in claim 1.
Erfindungsgemäß wurde erkannt, dass Motor- bzw. Getriebefluid, insbe- sondere Öl, das in einem Motor- bzw. Getriebefluid-Reservoir eines Kraftfahrzeugmotors vorliegt, eine Temperatur aufweist, die deutlich unter der Temperaturgrenze für typische elektronische Bauteile liegt. Über den Leitungsabschnitt für das Motor- bzw. Getriebefluid kann derartiges Motorbzw. Getriebefluid geführt werden. Aufgrund der thermischen Ankopplung an den Gehäuseabschnitt für die die elektronischen Bauteile aufweisende Steuereinrichtung wird eine Temperierung der Steuereinrichtung gewährleistet, die die Temperatur der Steuereinrichtung unter deren Temperaturgrenze hält. Ein Ausfall der Steuereinrichtung bedingt durch höhere Tem- peraturen ist dadurch sicher verhindert. Aufwand für eine passive Kühlung des Steuergerätes kann reduziert oder ganz vermieden werden. Eine Kühlung des Motor- bzw. Getriebefluids, damit gewährleistet ist, dass dieses Fluid im Leiτungsabschnitt eine ausreichend niedrige Temperatur hat, kann durch eine entsprechende Führung des Fluids über einen ausreichend lan- gen Fluidweg erreicht werden, in dem das Fluid ausreichend Gelegenheit zur Abgabe von Wärme hat. Ein derartiger Fluidweg kann insbesondere spiralförmig gestaltet sein.According to the invention, it was recognized that engine or transmission fluid, in particular oil, which is present in an engine or transmission fluid reservoir of an automobile engine, has a temperature which is significantly below the temperature limit for typical electronic components. About the line section for the engine or transmission fluid such Motorbzw. Transmission fluid are guided. Due to the thermal coupling to the housing portion for the electronic components having control means a temperature of the control device is ensured, which keeps the temperature of the control device below its temperature limit. A failure of the control device due to higher temperatures is thereby reliably prevented. Effort for a passive cooling of the control unit can be reduced or avoided altogether. Cooling of the engine or transmission fluid to ensure that this fluid in the delivery section has a sufficiently low temperature can be achieved by appropriate guidance of the fluid over a sufficiently long fluid path in which the fluid has sufficient opportunity to dispense Has heat. Such a fluid path can be designed in particular spirally.
Eine Ausführung nach Anspruch 2 ermöglicht eine kompakte Gehäusean- Ordnung mit dem Leitungsabschnitt.An embodiment according to claim 2 allows a compact Gehäusean- order with the line section.
Eine Gestaltung des Leitungsabschnitts nach Anspruch 3 erlaubt eine kostengünstige Ausführung von diesem sowie eine einfache Montage. Der Grundkörper des Leitungsabschnitts kann gleichzeitig die Grundplatte dar- stellen, was die Kompaktheit des Aufbaus des Gehäuses des Steuergeräts nochmals erhöht.A design of the line section according to claim 3 allows a cost-effective design of this and a simple installation. The main body of the line section can simultaneously represent the base plate, which further increases the compactness of the structure of the housing of the control unit.
Materialien für den Grundkörper und/oder den Deckel nach Anspruch 4 haben sich zur Führung von Motor- bzw. Getriebefluid mit einer typischen Temperatur von 120 0 C als besonders geeignet herausgestellt.Materials for the main body and / or the lid according to claim 4 have been found to be particularly suitable for guiding engine or transmission fluid with a typical temperature of 120 0 C.
Die Vorteile einer Kühlanordnung nach Anspruch 5 entsprechen denen, die vorstehend unter Bezugnahme auf das Steuergerät bereits erläutert wurden. Die Motor- bzw. Getriebefluidpumpe gewährleistet einen sicheren und ins- besondere stetigen Durchfluss von Motor- bzw. Getriebefluid durch den Leitungsabschnitt des Gehäuses des Steuergeräts.The advantages of a cooling arrangement according to claim 5 correspond to those which have already been explained above with reference to the control unit. The engine or transmission fluid pump ensures a safe and special steady flow of engine or transmission fluid through the line section of the housing of the controller.
Ein Fluidkühler nach Anspruch 6 gewährleistet eine weitere Kühlwirkung durch das Motor- bzw. Getriebefluid, sodass dieses mit nochmals niedrigerer Temperatur in den Leitungsabschnitt des Gehäuses des Steuergeräts eintreten kann.A fluid cooler according to claim 6 ensures a further cooling effect by the engine or transmission fluid, so that it can enter with even lower temperature in the line section of the housing of the control unit.
Als kühlendes Motor- bzw. Getriebefluid kann vorzugsweise das im Mo- torraum oder im Getriebe in der Regel vorhandene Öl gemäß Anspruch 7 eingesetzt werden.As cooling engine or transmission fluid, the oil present in the engine compartment or in the transmission, as a rule, can preferably be used according to claim 7.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. In dieser zeigen:An embodiment of the invention will be explained in more detail with reference to the drawing. In this show:
Fig. 1 schematisch einen Ölkreislauf mit hierzu gehörenden Komponenten eines Kraftfahrzeugs;Fig. 1 shows schematically an oil circuit with associated components of a motor vehicle;
Fig. 2 in einer perspektivischen Explosionsdarstellung Komponen- ten eines Getriebesteuergeräts zum Einsatz im Motorraum des Kraftfahrzeugs nach Fig. 1; und2 shows a perspective exploded view of components of a gearbox control unit for use in the engine compartment of the motor vehicle according to FIG. 1; and
Fig. 3 die Komponenten des Getriebesteuergeräts nach Fig. 2 mit montiertem Deckel.Fig. 3 shows the components of the transmission control unit according to Fig. 2 with the lid mounted.
Fig. 1 zeigt schematisch einen Ölkreislauf 1 eines Kraftfahrzeugs. Ein Teil des Ölkreislaufs 1 dient als Kühlanordnung für ein Steuergerät 2, welches in einem Motorraum des Kraftfahrzeugs zum Einsatz kommt. Beim Steu- ergerät 2 handelt es sich insbesondere um ein Getriebesteuergerät. Das Steuergerät 2 kann aber auch als Motorsteuergerät zum Einsatz kommen.Fig. 1 shows schematically an oil circuit 1 of a motor vehicle. A part of the oil circuit 1 serves as a cooling arrangement for a control unit 2, which is used in an engine compartment of the motor vehicle. In the tax Ergerät 2 is in particular a transmission control unit. The control unit 2 can also be used as an engine control unit.
Die Kühlanordnung hat ein Getriebefluid-Reservoir in Form eines Ölsump- fes 3. Eine Getriebefhiidpumpe 4 dient zum Umpumpen von Getriebefluid 5 durch einen schematisch in der Fig. 1 durch Pfeile dargestellten Getrie- befluidkreislauf. Eine schematisch durch einen Pfeil in der Fig. 1 dargestellte Getriebefluid-Zuleitung 6 ist mit einer Einlassöffhung 7 eines Leitungsabschnitts 8 eines Gehäuses 9 des Steuergeräts 2 verbunden. Ther- misch an den Leitungsabschnitt 8 ist ein Gehäuseabschnitt 10 für eine Steuereinrichtung des Steuergeräts 2, also insbesondere für eine Steuerelektronik, angekoppelt.The cooling arrangement has a transmission fluid reservoir in the form of an oil sump 3. A transmission fluid pump 4 is used for pumping transmission fluid 5 through a transmission fluid circuit schematically represented in FIG. 1 by arrows. A transmission fluid supply line 6 shown schematically by an arrow in FIG. 1 is connected to an inlet opening 7 of a line section 8 of a housing 9 of the control device 2. Theremixed to the line section 8 is a housing section 10 for a control device of the control device 2, that is to say in particular for control electronics.
Details zum Aufbau des Leitungsabschnitts 8 zeigen die Fig. 2 und 3. Teil des Gehäuses 9 ist eine Grandplatte 11, an der die Steuereinrichtung imDetails of the structure of the line section 8 show the Fig. 2 and 3. Part of the housing 9 is a grand plate 11 to which the control device in
Gehäuseabschnitt 10 montiert ist. Der Leitungsabschnitt 8 ist bereichsweise durch die Grundplatte 11 gebildet. Alternativ kann der Leitungsabschnitt 8 auch als separates Teil auf die Grundplatte 11 aufgesetzt werden. Der Leitungsabschnitt 8 ist zweiteilig mit einem Grundkörper 12 und einem De- ekel 13 ausgeführt. Die Grundplatte 11 ist ein Bestandteil des Grundkörpers 12 und an diesen angeformt. Der Deckel 13 ist fluiddicht auf den Grundkörper 12 aufgesetzt, wobei bis zu einer vorgegebenen Toleranzgrenze eine Leckrate zulässig ist. Der Deckel 13 wird mit dem Grandkörper 12 fluiddicht insbesondere durch Verschweißen, Verstemmen oder Verschrauben verbunden. Der Grundkörper 12 und der Deckel 13 können aus Aluminium, Guss oder Kunststoff ausgeführt sein.Housing section 10 is mounted. The line section 8 is partially formed by the base plate 11. Alternatively, the line section 8 can also be placed as a separate part on the base plate 11. The line section 8 is designed in two parts with a base body 12 and a lid 13. The base plate 11 is a part of the base body 12 and integrally formed thereon. The cover 13 is fluid-tightly mounted on the base body 12, wherein a leak rate is permissible up to a predetermined tolerance limit. The cover 13 is fluid-tightly connected to the main body 12 in particular by welding, caulking or screwing. The base body 12 and the cover 13 may be made of aluminum, cast or plastic.
Die Einlassöffnung 7 ist im Deckel 13 ausgeführt und steht mit einem FIu- idkanalabschnitt 14 im Grandkörper 12 in Fluidverbindung. An einer der Einlassöffnung 7 gegenüber liegenden Seite des Deckels 13 weist der Grundkörper 12 eine Auslassöffnung 15 auf, die ebenfalls in Fluidverbin- dung mit dem Kanalabschnitt 14 steht.The inlet opening 7 is embodied in the cover 13 and is in fluid communication with a fluid passage section 14 in the main body 12. At one of the Inlet opening 7 opposite side of the lid 13, the base body 12 has an outlet opening 15, which is also in fluid communication with the channel section 14.
Eine in der Fig. 1 durch einen weiteren Pfeil angedeutete Getriebefluid- Ableitung 16 steht mit der Auslassöffnung 15 des Leitungsabschnitts 8 in Fluidverbindung. Die Getriebefluid- Ableitung 16 steht wiederum mit dem Ölsumpf 3 in Fluidverbindung. Zwischen der Getriebefluidpumpe 4 und der Einlassöffnung 7 ist ein Fluidkühler 17 angeordnet.A in Fig. 1 indicated by a further arrow Getriebefluid- derivative 16 is in fluid communication with the outlet port 15 of the line section 8. The Getriebefluid- derivative 16 is in turn connected to the oil sump 3 in fluid communication. Between the transmission fluid pump 4 and the inlet port 7, a fluid cooler 17 is arranged.
Beim dargestellten Ausführungsbeispiel handelt es sich beim Getriebefluid 5 also um Öl, insbesondere um Getriebeöl.In the illustrated embodiment, the transmission fluid 5 is therefore oil, in particular gear oil.
Das Steuergerät 2 ist an einem in der Fig. 1 schematisch dargestellten Ge- triebe 18 montiert. Auch das Getriebe 18 wird mit dem Getriebefluid 5 versorgt. Dabei treten im Getriebe 18 Temperaturen bis zu 155 ° C auf, denen auch das Steuergerät 2 ausgesetzt ist. Mit dem Getriebefluid 5 wird weiterhin eine ebenfalls schematisch in der Fig. 1 angedeutete Kupplung 19 versorgt.The control unit 2 is mounted on a transmission 18 shown schematically in FIG. Also, the transmission 18 is supplied with the transmission fluid 5. In this case, temperatures of up to 155.degree. C. occur in the gearbox 18, to which the control unit 2 is also exposed. With the transmission fluid 5 also indicated schematically in FIG. 1 clutch 19 is still supplied.
Eine Kühlung des Steuergeräts 2 erfolgt folgendermaßen: Aus dem Ölsumpf 3 wird mithilfe der Getriebefluidpumpe 4 das Getriebefluid 5 durch den Fluidkühler 17 zur Kupplung 19 hingefördert. Ein Teil des geförderten Getriebefluids 5 wird über die Getriebefluid-Zuleitung 6 in die Einlassöff- nung 7 des Leitungsabschnitts 8 gepumpt. Das Getriebefluid 5 strömt durch den Leitungsabschnitt 8 am Gehäuseabschnitt 10 des Gehäuses 9 des Steuergeräts 2 entlang und strömt aus dem Kanalabschnitt 14 durch die Auslassöffnung 15 heraus. Um den Getriebefluidfluss zwischen der Einlassöffnung und der Auslassöffmmg 15 zu begünstigen, kann im Kanalabschnitt 14 eine Kaminwirkung genutzt werden. Das ausströmende Getriebefluid 5 gelangt über die Getriebefluid- Ableitung 16 wieder in den Ölsumpf 3 zurück. Im Ölsumpf 3 hat das Getriebefluid 5 eine maximale Temperatur von ca. 120 0 C, die nicht überschritten wird. Dieses, im Vergleich zu den Getriebetemperaturen kühlere Öl führt daher zu einer Kühlung der Steuereinrichtung im Gehäuseabschnitt 10 des Steuergeräts 2. Es wird also eine aktive Getriebefluidkühlung, insbesondere eine aktive Ölkühlung, realisiert. A cooling of the control unit 2 is effected as follows: From the oil sump 3, the transmission fluid 5 is conveyed by means of the transmission fluid pump 4 through the fluid cooler 17 to the clutch 19. A part of the conveyed transmission fluid 5 is pumped via the transmission fluid supply line 6 into the inlet opening 7 of the line section 8. The transmission fluid 5 flows through the line section 8 along the housing section 10 of the housing 9 of the control device 2 and flows out of the channel section 14 through the outlet opening 15. In order to favor the transmission fluid flow between the inlet opening and the outlet opening 15, can in the channel section 14 a fireplace effect can be used. The outflowing transmission fluid 5 returns via the Getriebefluid- derivative 16 back into the oil sump 3. In the oil sump 3, the transmission fluid 5 has a maximum temperature of about 120 0 C, which is not exceeded. This, compared to the transmission temperatures cooler oil therefore leads to a cooling of the control device in the housing portion 10 of the controller 2. So it is an active Getriebefluidkühlung, in particular an active oil cooling, realized.

Claims

Patentansprtiche Patentansprtiche
1. Steuergerät (2) zum Einsatz im Motorraum oder im Getriebe eines Kraftfahrzeugs - mit einem Gehäuse (9), welches einen Gehäuseabschnitt (10) für eine Steuereinrichtung aufweist,1. Control device (2) for use in the engine compartment or in the transmission of a motor vehicle - with a housing (9), which has a housing portion (10) for a control device,
- dadurch gekennzeichnet, dass das Gehäuse (9) weiterhin einen Leitungsabschnitt (8) für ein Motor- bzw. Getriebefluid (5) umfasst, welcher thermisch am Gehäuseabschnitt (10) für die Steuereinrich- tung angekoppelt ist,- characterized in that the housing (9) further comprises a line section (8) for a motor or transmission fluid (5), which is thermally coupled to the housing section (10) for the control device,
2. Steuergerät nach Anspruch 1, dadurch gekennzeichnet, dass das Gehäuse (9) eine Grundplatte (11) aufweist, an der die Steuereinrichtung montiert ist, wobei der Leitungsabschnitt (8) zumindest bereichsweise durch die Grundplatte (11) gebildet ist.2. Control device according to claim 1, characterized in that the housing (9) has a base plate (11) on which the control device is mounted, wherein the line section (8) at least partially by the base plate (11) is formed.
3. Steuergerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Leitungsabschnitt (8) zweiteilig mit einem Grandkörper (12) und einem Deckel (13) ausgeführt ist.3. Control device according to claim 1 or 2, characterized in that the line section (8) is designed in two parts with a Grandkörper (12) and a lid (13).
4. Steuergerät nach Ansprach 3, dadurch gekennzeichnet, dass der Grundkörper (12) und/oder der Deckel (13) aus Aluminium, Guss oder Kunststoff ausgeführt sind.4. Control device according to spoke 3, characterized in that the base body (12) and / or the lid (13) made of aluminum, cast or plastic are executed.
5. Kühlanordnung für ein Steuergerät (2) nach einem der Ansprüche 1 bis 45. Cooling arrangement for a control device (2) according to one of claims 1 to 4
- mit einem Motor- bzw. Getriebefluid-Reservoir (3), - mit einer Motor- bzw. Getriebefluidpumpe (4) zum Umpumpen des Motor- bzw. Getriebefluids (5) vom Motor- bzw. Getriebefluid- Reservoir (3) durch einen Motor- bzw. Getriebefluidkreislauf,with a motor or transmission fluid reservoir (3), with an engine or transmission fluid pump (4) for pumping the engine or transmission fluid (5) from the engine or transmission fluid reservoir (3) through an engine or transmission fluid circuit,
- wobei eine Motor- bzw. Getriebefluid-Zuleitung (6) mit einem Ein- lass (7) des Leitungsabschnitts (8) des Steuergeräts (2) verbunden ist,wherein an engine or transmission fluid supply line (6) is connected to an inlet (7) of the line section (8) of the control device (2),
- wobei eine Motor- bzw. Getriebefluid- Ableitung (16) mit einem Auslass (15) des Leitungsabschnitts (8) des Steuergeräts (2) verbunden ist.- Wherein a motor or Getriebefluid- derivative (16) with an outlet (15) of the line section (8) of the control device (2) is connected.
6. Kühlanordnung nach Anspruch 5, dadurch gekennzeichnet, dass zwischen dem Einlass (7) des Leitungsabschnitts (8) und dem Motor- bzw. Getriebefluid-Reservoir (3) ein Fluidkühler (17) angeordnet ist.6. Cooling arrangement according to claim 5, characterized in that between the inlet (7) of the line section (8) and the engine or transmission fluid reservoir (3), a fluid cooler (17) is arranged.
7. Kühlanordnung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass das als Motor- bzw. Getriebefluid (5) Öl, insbesondere Getriebeöl, eingesetzt wird. 7. Cooling arrangement according to claim 5 or 6, characterized in that the engine or transmission fluid (5) oil, in particular transmission oil, is used.
EP08734392A 2007-03-20 2008-03-14 Control appliance for using in the engine compartment or in the transmission of a motor vehicle and cooling system for such a control appliance Ceased EP2123141A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007014276 2007-03-20
PCT/DE2008/000453 WO2008113332A2 (en) 2007-03-20 2008-03-14 Control appliance for using in the engine compartment or in the transmission of a motor vehicle and cooling system for such a control appliance

Publications (1)

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EP2123141A2 true EP2123141A2 (en) 2009-11-25

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EP08734392A Ceased EP2123141A2 (en) 2007-03-20 2008-03-14 Control appliance for using in the engine compartment or in the transmission of a motor vehicle and cooling system for such a control appliance

Country Status (5)

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US (1) US20100101512A1 (en)
EP (1) EP2123141A2 (en)
JP (1) JP5305205B2 (en)
DE (1) DE112008000230A5 (en)
WO (1) WO2008113332A2 (en)

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Also Published As

Publication number Publication date
WO2008113332A2 (en) 2008-09-25
JP2010521617A (en) 2010-06-24
US20100101512A1 (en) 2010-04-29
DE112008000230A5 (en) 2009-10-15
WO2008113332A3 (en) 2009-01-29
JP5305205B2 (en) 2013-10-02

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