DE19958189A1 - Cooler for controller attached to engine, has high thermal conductivity base for electronics with cooling channels passing through it upstream of air compressor induction arrangement - Google Patents

Cooler for controller attached to engine, has high thermal conductivity base for electronics with cooling channels passing through it upstream of air compressor induction arrangement

Info

Publication number
DE19958189A1
DE19958189A1 DE1999158189 DE19958189A DE19958189A1 DE 19958189 A1 DE19958189 A1 DE 19958189A1 DE 1999158189 DE1999158189 DE 1999158189 DE 19958189 A DE19958189 A DE 19958189A DE 19958189 A1 DE19958189 A1 DE 19958189A1
Authority
DE
Germany
Prior art keywords
electronics
cooler
air compressor
cooling
upstream
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.)
Withdrawn
Application number
DE1999158189
Other languages
German (de)
Inventor
Rainer Kalass
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Priority to DE1999158189 priority Critical patent/DE19958189A1/en
Publication of DE19958189A1 publication Critical patent/DE19958189A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0239—Electronic boxes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supercharger (AREA)

Abstract

The cooler carries away the loss heat released by the electronics (3) of the controller using a coolant in the form of the induction air for the air compressor. The electronics are mounted on a high thermal conductivity base (6) with cooling channels (7) passing through it upstream of the air compressor induction arrangement and with e.g. cooling ribs (9) for increasing heat transport.

Description

Die Erfindung bezieht sich auf einen Kühler gemäß dem Gattungsbegriff des Patentan­ spruches 1.The invention relates to a cooler according to the generic term of the patent saying 1.

Steuergeräte mit eingebauter Elektronik sind gegen Stöße und höhere Temperaturen empfindlich. Zur Ableitung der in der Elektronik frei werdenden Verlustwärme ist eine Kühlung erforderlich. Zur Kühlung bedient man sich eines Kühlmediums, welches die Wärme aufnimmt und abtransportiert. In der Regel wird bei Brennkraftmaschinen der Treibstoff benutzt. Bei Dieselmotoren ist die Treibstofftemperatur stark von der Last der Brennkraftmaschine und von der augenblicklichen Tankfüllung abhängig. Die ständig umlaufende Spülmenge des Einspritzsystems erzeugt einen ständigen Wärme­ eintrag (Kompressionswärme, Motorabwärme). Dies mit der Folge, daß Kraftstoff­ temperaturen bei Dieselmotoren bis in den dreistelligen Celsiusbereich im Tank nach­ weisbar sind; insbesondere dann, wenn als Einspritzsystem das Common-Rail-System eingesetzt wird. Weiterhin ist eine sichere Dichtheit des Kraftstoffkühlers nur mit hohem Aufwand über die geforderte Lebensdauer erreichbar, da der entkoppelte Kraftstoffkühler Relativbewegungen zum Motor, und damit zu den Kraftstoffleitungen vollführt. Die Druckpulsationen im Kraftstoffsystem sind zu beachten. Darüber hinaus kann der Kraftstoffkühler nicht auf der Saugseite der Kraftstoffvorförderpumpe eingebunden werden, da die zulässige Saughöhe der Pumpe zu beachten ist. Dies bedingt einen hohen Kraftstoffdruck (nach Pumpe) im bisher verwendeten Kühlsystem (DE 197 51 364 A1). Control units with built-in electronics are resistant to shocks and higher temperatures sensitive. To dissipate the heat lost in the electronics is a Cooling required. For cooling one uses a cooling medium which the Absorbs and removes heat. As a rule, the internal combustion engine Used fuel. In diesel engines, the fuel temperature is heavily dependent on the load the internal combustion engine and depending on the current tank filling. The constantly circulating flushing quantity of the injection system generates a constant heat entry (compression heat, engine waste heat). This has the consequence that fuel temperatures in diesel engines up to the three-digit Celsius range in the tank are detectable; especially when the common rail system is used as the injection system is used. Furthermore, the fuel cooler can only be securely sealed high effort can be achieved over the required service life, since the decoupled Fuel cooler Relative movements to the engine, and thus to the fuel lines accomplished. The pressure pulsations in the fuel system must be observed. Furthermore the fuel cooler cannot be on the suction side of the fuel feed pump be involved, since the permissible suction height of the pump must be observed. This causes a high fuel pressure (after pump) in the previously used Cooling system (DE 197 51 364 A1).  

Darüber hinaus ist es bekannt, für die Kühlung die Ansaugluft der Brennkraftmaschine selbst zu nutzen. Das Steuergerät wird zu diesem Zweck in den Ansaugtrakt der Brennkraftmaschine eingebaut. Das Steuergerät kommt dabei im Bereich der Zünd­ schlagebene zu liegen, und die elektronischen Bauteile erfahren dadurch Beschleuni­ gungswerte, denen sie nicht gewachsen sind. Ferner würde bei Motoren mit Abgasrück­ führung in den Ansaugtrakt sehr schnell eine Rußablagerung an den Kühlelementen des Steuergerätes eintreten und die Wärmeabfuhr aus den elektronischen Teilen des Steuergerätes an die Ansaugluft in unkontrollierbarer Weise beeinträchtigen.In addition, it is known for cooling the intake air of the internal combustion engine to use yourself. For this purpose, the control unit is in the intake tract Internal combustion engine installed. The control unit comes in the area of the ignition plane and the electronic components experience acceleration values that they are not up to. Furthermore, engines with exhaust gas return would a soot deposit on the cooling elements very quickly of the control unit enter and the heat dissipation from the electronic parts of the Control unit on the intake air in an uncontrollable manner.

Der Erfindung liegt die Aufgabe zugrunde, die Kühlung so zu gestalten, daß sie unter allen in der Praxis auftretenden Bedingungen auch langfristig zuverlässig arbeitet.The invention has for its object to design the cooling so that it under works reliably in the long term in all conditions that occur in practice.

Die Aufgabe wird erfindungsgemäß nach den kennzeichnenden Merkmalen des Pa­ tentanspruches 1 gelöst.The task is inventively according to the characterizing features of Pa claim 1 solved.

Durch die Verwendung von Luft, welche in der Regel eine Temperatur im Bereich der Umwelttemperatur (in Europa ca. 40°C und in den Tropen ca. 50°C) aufweist, wird stets eine hinreichende Kühlung gewährleistet. Gegenüber Diesel als Kühlmedium ist Luft umweltneutral; es ist also bei undichtem Kühlsystem nicht mit Umweltver­ schmutzung oder gar mit Brandgefahr durch Entzündung des austretenden Treibstoffes zu rechnen.By using air, which is usually a temperature in the range of Environmental temperature (approx. 40 ° C in Europe and approx. 50 ° C in the tropics) sufficient cooling is always guaranteed. Compared to diesel as a cooling medium Air neutral; So if the cooling system is leaky, it is not environmentally friendly dirt or even fire hazard due to ignition of the escaping fuel to count.

Vorteilhafte Ausbildungen des Kühlers können den Ansprüchen 2 und 3 entnommen werden.Advantageous designs of the cooler can be found in claims 2 and 3 become.

Ein Ausführungsbeispiel der Erfindung ist an Hand von Zeichnungen dargestellt.An embodiment of the invention is illustrated with reference to drawings.

Es zeigt:It shows:

Fig. 1 eine Ansicht des Steuergerätes mit integriertem Kühler und Ein­ bindung in die Ansaugung eines Luftpressers, Fig. 1 is a view of the control unit with integrated condenser and a binding in the aspiration of an air compressor,

Fig. 2 einen Querschnitt II-II durch das Steuergerät mit integriertem Kühler. Fig. 2 shows a cross section II-II through the control unit with an integrated cooler.

Fig. 1 zeigt eine Ansicht des Steuergerätes 1 mit integrierten Kühlsystem 2. Die Elektronik ist in Fig. 2 näher dargestellt. Erfindungsgemäß wird dem Kühlsystem 2 Luft zugeführt. Die Luft wird über einen Eintrittsstutzen 4 angesaugt und tritt an einem Austrittsstutzen 5, um einen gewissen Betrag erwärmt, wieder aus. Die aus dem Aus­ trittsstutzen 5 austretende Luft wird von dem hier nicht dargestellten Luftpresser der Brennkraftmaschine angesaugt. Die Führung der Kühlluft innerhalb des Kühlsystems 2 übernehmen Kühlluftkanäle 7. Fig. 1 shows a view of the control device 1 with integrated cooling system 2. The electronics are shown in more detail in Fig. 2. According to the invention, air is supplied to the cooling system 2 . The air is sucked in via an inlet nozzle 4 and exits at an outlet nozzle 5 , warmed by a certain amount. The air emerging from the outlet nozzle 5 is sucked in by the air compressor (not shown here) of the internal combustion engine. The cooling air channels 7 take over the guidance of the cooling air within the cooling system 2 .

Fig. 2 zeigt im Schnitt II-II eine mögliche Ausführungsform des Kühlsystems 2. Die Elektronik 3 ist auf einer Basis 6 montiert, die über eine gute Wärmeleitfähigkeit ver­ fügt, um die in der Elektronik 3 durch Verlust freiwerdende Wärme abzutransportie­ ren. Die Kühlluftkanäle 7 durchdringen das Steuergerät 1. Im dargestellten Beispiel ist das Kühlsystem 2 mit den Kühlkanälen 7 zweiteilig ausgeführt und besteht aus der Basis 6 und einem Deckel 8. Zur Vergrößerung der wärmetauschenden Oberfläche sind die Kühlluftkanäle 7 auf ihrer Innenseite mit Rippen 9 versehen. Um das Steuer­ gerät 1 vor Wärme zu schützen, die von der Brennkraftmaschine 10 abstrahlt, kann es mit einem Isoliermantel 11 umgeben werden. Der Isoliermantel 11 sollte sich auch auf den Eintrittsstutzen 4 und den Austrittsstutzen 5 erstrecken. Der Isoliermantel 11 kann vorteilhafterweise auch die Funktion einer zusätzlichen mechanischen Schwingungs­ dämpfung übernehmen. Zur schwingungstechnischen Entkoppelung ist das Steuergerät 1 über Elastomere 12 mit der Brennkraftmaschinen 10 verbunden. Fig. 2 shows the section II-II of a possible embodiment of the cooling system 2. The electronics 3 is mounted on a base 6 , which has good thermal conductivity in order to remove the heat released in the electronics 3 by loss. The cooling air channels 7 penetrate the control unit 1 . In the example shown, the cooling system 2 with the cooling channels 7 is designed in two parts and consists of the base 6 and a cover 8 . To increase the heat-exchanging surface, the cooling air channels 7 are provided with ribs 9 on their inside. In order to protect the control device 1 from heat emitted by the internal combustion engine 10 , it can be surrounded with an insulating jacket 11 . The insulating jacket 11 should also extend to the inlet connector 4 and the outlet connector 5 . The insulating jacket 11 can advantageously also take on the function of an additional mechanical vibration damping. For vibration-related decoupling, the control unit 1 is connected to the internal combustion engine 10 via elastomers 12 .

Da sich das Kühlmedium Luft vollkommen umweltneutral verhält, ist es leicht einzu­ sehen, daß die Abdichtung des Kühlsystems 2 von untergeordneter Bedeutung ist.Since the cooling medium air is completely environmentally neutral, it is easy to see that the sealing of the cooling system 2 is of secondary importance.

Da die durch den Anschlußstutzen 4 angesaugte Luft (Fig. 1) aus der Ansaugluft der Brennkraftmaschine vor Eintritt in den Verdichter des ATL und noch vor der Ein­ leitung einer Kurbelraumentlüftung entnommen wird ist sie durch einen Ansaug­ luftfilter gereinigt. Eine Verschmutzung der Kühlluftkanäle 7 ist ausgeschlossen, so daß die Kühlung auch langfristig gesehen funktionstüchtig bleibt.Since the air sucked in through the connecting piece 4 ( FIG. 1) from the intake air of the internal combustion engine before it enters the compressor of the ATL and before a line is removed from a crankcase ventilation, it is cleaned by an intake air filter. Contamination of the cooling air ducts 7 is excluded, so that the cooling remains functional even in the long term.

Ein weiterer Vorteil ist darin zu sehen, daß der Anbau des Steuergerätes 1 an die Brennkraftmaschine sehr freizügig gehandhabt werden kann, so daß es an Stellen geringer Schwingungsamplituden angebaut werden kann.Another advantage can be seen in the fact that the attachment of the control unit 1 to the internal combustion engine can be handled very freely, so that it can be installed in places with low vibration amplitudes.

Claims (3)

1. Kühler für motorfestes Steuergerät, bei dem die in einer Elektronik des Steuergeräts freiwerdende Verlustwärme mittels eines Kühlmediums abgeführt wird, dadurch gekennzeichnet, daß als Kühlmedium die An­ saugluft eines Luftpressers dient.1. Cooler for engine-mounted control unit, in which the waste heat released in an electronic unit of the control unit is dissipated by means of a cooling medium, characterized in that the suction air of an air compressor serves as the cooling medium. 2. Kühler nach Anspruch 1, dadurch gekennzeichnet, daß die Elektronik (3) auf einer gut wärmeleitenden Basis (6) montiert ist, daß diese Basis (6) von Kühlluftkanälen (7) durchzogen ist und daß die Kühlluftkanäle (7) stromauf einer Luftpresseransaugung angeordnet sind.2. Cooler according to claim 1, characterized in that the electronics ( 3 ) is mounted on a good heat-conducting base ( 6 ), that this base ( 6 ) of cooling air channels ( 7 ) and that the cooling air channels ( 7 ) upstream of an air compressor suction are arranged. 3. Kühler nach Anspruch 1, dadurch gekennzeichnet, daß die Kühlluftka­ näle (7) oberflächenvergrößernde Strukturen, z. B. Kühlrippen (9) zur Verbesserung des Wärmetransportes aufweisen.3. Radiator according to claim 1, characterized in that the Kühlluftka channels ( 7 ) surface-enlarging structures, for. B. cooling fins ( 9 ) to improve heat transfer.
DE1999158189 1999-12-02 1999-12-02 Cooler for controller attached to engine, has high thermal conductivity base for electronics with cooling channels passing through it upstream of air compressor induction arrangement Withdrawn DE19958189A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999158189 DE19958189A1 (en) 1999-12-02 1999-12-02 Cooler for controller attached to engine, has high thermal conductivity base for electronics with cooling channels passing through it upstream of air compressor induction arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999158189 DE19958189A1 (en) 1999-12-02 1999-12-02 Cooler for controller attached to engine, has high thermal conductivity base for electronics with cooling channels passing through it upstream of air compressor induction arrangement

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DE19958189A1 true DE19958189A1 (en) 2001-06-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20120802U1 (en) * 2001-12-21 2003-02-13 Siemens Ag Housing for electrical and electronic component maintains operating temperature within limits
DE10313355A1 (en) * 2003-03-25 2004-11-04 Siemens Ag Cooler for control device of internal combustion engine, has cooling channel formed from side surface of external wall of component to be cooled
WO2006131428A1 (en) * 2005-06-08 2006-12-14 Siemens Vdo Automotive Ag Electronic controller for a motor vehicle, in particular for a gearbox controller
DE102014103471A1 (en) * 2014-03-14 2015-09-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Electric actuator

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552727A1 (en) * 1975-11-25 1977-05-26 Bosch Gmbh Robert ELECTRICAL DEVICE IN THE ENGINE COMPARTMENT OF A MOTOR VEHICLE
US4631635A (en) * 1984-10-31 1986-12-23 The United States Of America As Represented By The Secretary Of The Air Force Vibration isolated cold plate assembly
EP0103412B1 (en) * 1982-08-12 1987-04-15 Mitsubishi Denki Kabushiki Kaisha Control apparatus for inverters, etc.
DE19517491A1 (en) * 1995-05-12 1996-11-14 Zahnradfabrik Friedrichshafen Cooling for a transmission control
DE19614463A1 (en) * 1996-04-12 1997-10-16 Dolmar Gmbh Electronic control unit for internal combustion engines
DE19716401A1 (en) * 1996-04-19 1997-11-20 Yazaki Corp Thermal radiation structure for a box with an electronic unit
US5715140A (en) * 1996-05-03 1998-02-03 Ford Motor Company Overlay substrate for securing electronic devices in a vehicle
DE19751364A1 (en) * 1997-11-20 1999-05-27 Man Nutzfahrzeuge Ag Decoupling element for shock and temperature sensitive components

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552727A1 (en) * 1975-11-25 1977-05-26 Bosch Gmbh Robert ELECTRICAL DEVICE IN THE ENGINE COMPARTMENT OF A MOTOR VEHICLE
EP0103412B1 (en) * 1982-08-12 1987-04-15 Mitsubishi Denki Kabushiki Kaisha Control apparatus for inverters, etc.
US4631635A (en) * 1984-10-31 1986-12-23 The United States Of America As Represented By The Secretary Of The Air Force Vibration isolated cold plate assembly
DE19517491A1 (en) * 1995-05-12 1996-11-14 Zahnradfabrik Friedrichshafen Cooling for a transmission control
DE19614463A1 (en) * 1996-04-12 1997-10-16 Dolmar Gmbh Electronic control unit for internal combustion engines
DE19716401A1 (en) * 1996-04-19 1997-11-20 Yazaki Corp Thermal radiation structure for a box with an electronic unit
US5715140A (en) * 1996-05-03 1998-02-03 Ford Motor Company Overlay substrate for securing electronic devices in a vehicle
DE19751364A1 (en) * 1997-11-20 1999-05-27 Man Nutzfahrzeuge Ag Decoupling element for shock and temperature sensitive components

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20120802U1 (en) * 2001-12-21 2003-02-13 Siemens Ag Housing for electrical and electronic component maintains operating temperature within limits
DE10313355A1 (en) * 2003-03-25 2004-11-04 Siemens Ag Cooler for control device of internal combustion engine, has cooling channel formed from side surface of external wall of component to be cooled
DE10313355B4 (en) * 2003-03-25 2005-12-15 Siemens Ag cooling arrangement
WO2006131428A1 (en) * 2005-06-08 2006-12-14 Siemens Vdo Automotive Ag Electronic controller for a motor vehicle, in particular for a gearbox controller
US7754977B2 (en) 2005-06-08 2010-07-13 Continental Automotive Gmbh Electronic controller for a motor vehicle, in particular for a gearbox controller
DE102014103471A1 (en) * 2014-03-14 2015-09-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Electric actuator
US9989105B2 (en) 2014-03-14 2018-06-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Electric actuator

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