DE3201443A1 - Drive unit, especially for motor vehicles - Google Patents

Drive unit, especially for motor vehicles

Info

Publication number
DE3201443A1
DE3201443A1 DE19823201443 DE3201443A DE3201443A1 DE 3201443 A1 DE3201443 A1 DE 3201443A1 DE 19823201443 DE19823201443 DE 19823201443 DE 3201443 A DE3201443 A DE 3201443A DE 3201443 A1 DE3201443 A1 DE 3201443A1
Authority
DE
Germany
Prior art keywords
heat exchanger
combustion engine
internal combustion
drive unit
motor vehicles
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Withdrawn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
DE19823201443
Other languages
German (de)
Inventor
Frank Dipl.-Ing. 7050 Waiblingen Rüger
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19823201443 priority Critical patent/DE3201443A1/en
Publication of DE3201443A1 publication Critical patent/DE3201443A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • 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
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • 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
    • F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105—Using two or more pumps
    • 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
    • F01P2037/00—Controlling
    • F01P2037/02—Controlling starting
    • 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
    • F01P2050/00—Applications
    • F01P2050/02—Marine engines
    • F01P2050/06—Marine engines using liquid-to-liquid heat exchangers
    • 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
    • F01P2060/045—Lubricant cooler for transmissions
    • 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
    • F01P2060/16—Outlet manifold

Abstract

Heat exchangers are assigned to a drive unit, especially for motor vehicles, which comprises an internal combustion engine and a transmission unit. In order to incorporate the transmission unit into a cooling system, the temperature of the transmission unit can be influenced by at least one heat exchanger.

Description

"Antriebseinheit, insbesondere für Kraftfahrzeuge""Drive unit, especially for motor vehicles"

Die Erfindung bezieht sich auf eine Antriebseinheit nach dem Oberbegriff des Patentanspruches 1.The invention relates to a drive unit according to the preamble of claim 1.

Antriebseinheiten der gattungsgemäßen Art, bei denen die Wärmetauscher in das Kühlsystem des Kraftfahrzeuges mit einbezogen sind, sind grundsätzlich bekannt. So offenbart z.B. die DE-OS 25 53 174 ein Kühlsystem mit der Besonderheit, daß der Kühlkreislauf der Brennkraftmaschine und der Kreislauf der Heizflüssigkeit voneinander strömungsmäßig getrennt sind. In dem Heizflüssigkeitskreislauf liegt ein Abgas- Flü ssigkei ts-Wärmetauscher, so daß sofort nach dem Starten der Brennkraftmaschine die Wärme der heißen Abgase an einen der Aufheizung des Fahrzeuginnenraumes dienenden Flüssigkeits-Luft-Wärmetauscher abgegeben wird. Außerdem ist während dieser Betriebsphase der Maschine, also bei kalter Brennkraftmaschine, über ein Thermostatventil der übliche Kühler der Brennkraftmaschine überbrückt, so daß der in wärmeaustauschender Verbindung mit dem Heizflüssigkeitskreislauf stehende Kühlflüssigkeitskreislauf verkleinert und demgemäß nur eine geringere Kühlflüssigkeitsmenge aufzuheizen ist. Sobald die Brennkraftmaschine im Betrieb warm geworden ist, erfolgt auch eine Wärmeabgabe seitens der Kühlflüssigkeit an den Heizflüssigkeitskreislauf, so daß dann ein Heizen des Fahrzeuginnenraumes unter Benutzung der Wärme sowohl der Abgase als auch der Kühlflüssigkeit auftritt. Die Getriebeeinheit bleibt von diesem Kühlsystem jedoch unbeeinflußt.Drive units of the generic type in which the heat exchangers are included in the cooling system of the motor vehicle are known in principle. For example, DE-OS 25 53 174 discloses a cooling system with the peculiarity that the Cooling circuit of the internal combustion engine and the circuit of the heating fluid from each other are separated in terms of flow. In the heating fluid circuit there is an exhaust gas Liquid heat exchanger, so that immediately after starting the internal combustion engine the heat of the hot exhaust gases to one used to heat the vehicle interior Liquid-air heat exchanger is delivered. In addition, it is during this operating phase the machine, i.e. when the internal combustion engine is cold, via a thermostatic valve usual cooler of the internal combustion engine bridged, so that the in heat exchanging Coolant circuit connected to the heating fluid circuit and accordingly only a smaller amount of coolant is to be heated. As soon as the internal combustion engine is warm in operation has become also a heat transfer on the part of the cooling liquid to the heating liquid circuit, so that then a heating of the vehicle interior using the heat both the exhaust gases as well as the coolant occurs. The gear unit remains from However, this cooling system is unaffected.

Aufgabe der Erfindung ist es, die Getriebeeinheit einer Antriebseinheit der eingangs genannten Art in ein Kühlsystem einzubeziehen.The object of the invention is to provide the gear unit of a drive unit to be included in a cooling system of the type mentioned above.

Erfindungsgemäß wird diese Aufgabe durch die gekennzeichneten Merkmale des Patentanspruches 1 gelöst.According to the invention, this object is achieved by the features identified of claim 1 solved.

Weitere Merkmale der Erfindung beinhalten die Unteransprüche.Further features of the invention are contained in the subclaims.

Durch das erfindungsgemäße Einbeziehen der Getriebeeinheit in ein Kühlsystem wird die Warmlaufphase der Getriebeeinheit erheblich verkürzt, wodurch eine sich auch auf den Kraftstoffverbrauch günstig auswirkende Verringerung der Reib leistung in der Getriebeeinheit erzielt wird. Darüberhinaus kann nach dem Erreichen einer bestimmten Betriebstemperatur der Getriebeeinheit bzw. des darin befindlichen Öles diese konstant gehalten werden.By including the gear unit according to the invention in a Cooling system, the warm-up phase of the transmission unit is shortened considerably, whereby a reduction in the fuel consumption that also has a positive effect Friction performance in the gear unit is achieved. In addition, after reaching a certain operating temperature of the transmission unit or the one located therein Oil these are kept constant.

In der Zeichnung, die eine beispielsweise Ausführungsform der Erfindung zeigt, ist ein Kühlsystem einer Antriebseinheit eines Kraftfahrzeuges dargestellt.In the drawing, which shows an example embodiment of the invention shows a cooling system of a drive unit of a motor vehicle is shown.

Eine Brennkraftmaschine 1 ist mit einem durch einen Wasserkühler gebildeten Wärmetauscher 2 durch eine Kühlwasser-Rücklaufleitung 3 und eine Kühlwasser-Zuführleitung 4 verbunden, in der eine Wasserpumpe 5 angeordnet ist. Eine mit 6 bezeichnete Kurzschlußleitung wird durch ein Thermostatven- til 7 beeinflußt. Die Kühlwasser-Zuführleitung 4 ist mit der Brennkraftmaschine 1 auch über eine Heizwasser-Rücklaufleitung 8, einen Wärmetauscher 9 und eine Heizwasser-Zuführlei tung 10 verbunden, in der ein Thermostatventil 11 angeordnet ist. Der Wärmetauscher 9 wirkt mit einer ein Achsgetriebe 12 und ein Wechselgetriebe 13 umfassenden Getriebeeinheit47 zusammen, wobei der Wärmetauscher 9 einen dem Wechselgetriebe 13 zugeordneten Wärmetauscher 14 und einen dem Achsgetriebe 12 zugeordneten Wärmetauscher 15 umfaßt.An internal combustion engine 1 is formed with a water cooler Heat exchanger 2 through a cooling water return line 3 and a cooling water supply line 4 connected, in which a water pump 5 is arranged. A short-circuit line denoted by 6 is controlled by a thermostat valve til 7 influenced. The cooling water supply line 4 is connected to the internal combustion engine 1 via a heating water return line 8, a heat exchanger 9 and a Heizwasser-Zuführlei device 10 connected, in which a Thermostatic valve 11 is arranged. The heat exchanger 9 acts with an axle drive 12 and a gear unit 47 comprising a change gearbox 13, the Heat exchanger 9, a heat exchanger 14 assigned to the change gear 13 and a the axle drive 12 associated heat exchanger 15 includes.

Während der Warmlaufphase der Brennkraftmaschine 1 sind die Thermostatventile 7 und 11 geschlossen. Die Wasserpumpe 5 wälzt das Kühlmedium durch die Kühlwasser-Zuführleitung 4, den Kühlmantel der Brennkraftmaschine 1, die Kühlwasser-Rücklaufleitung 3, die Kurzschlußleitung 6 und das Thermostatventil 7 um. Ist eine Kühlwassertemperatur von ca. 650 C erreicht, öffnet das Thermostatventil 11 den Zufluß des Kühlwassers zu dem Wärmetauscher 9, so daß das Wechselgetriebe 13 und das Achsgetriebe 12 erwärmt werden.During the warm-up phase of the internal combustion engine 1, the thermostatic valves are 7 and 11 closed. The water pump 5 circulates the cooling medium through the cooling water supply line 4, the cooling jacket of the internal combustion engine 1, the cooling water return line 3, the Short-circuit line 6 and the thermostatic valve 7 to. Is a cooling water temperature of approx. 650 C reached, the thermostatic valve 11 opens the inflow of the cooling water to the heat exchanger 9, so that the change gear 13 and the axle gear 12 are heated will.

Bei einem zu großen Druckabfall in der Heizwasser-Zuführleitung 10 und dem Wärmetauscher 9 kann es von Vorteil sein, eine vom Thermostatventil 11 gesteuerte U*wälzpumpe 16 in der Heizwasser-Zuführleitung 10 vorzusehen.If the pressure drop in the heating water supply line 10 is too great and the heat exchanger 9, it may be advantageous to have a thermostatic valve 11 controlled U * circulating pump 16 to be provided in the heating water supply line 10.

Erreicht das Kühlwasser eine Temperatur, die größer als 870 C ist, verschließt das Thermostatventil 7 die Kurzschlußleitung 6. Das Kühlwasser fließt vom Kühlmantel der Brennkraftmaschine 1 durch die Kühlwasser-Rücklaufleitung 3, den Wärmetauscher 2 und die Kühlwasser-Zuführleitung 4 wieder zum Kühlmantel der Brennkraftmaschine 1 zurück.If the cooling water reaches a temperature that is greater than 870 C, the thermostatic valve 7 closes the short-circuit line 6. The cooling water flows from the cooling jacket of the internal combustion engine 1 through the cooling water return line 3, the heat exchanger 2 and the cooling water supply line 4 back to the cooling jacket of the Internal combustion engine 1 back.

Gleichzeitig fließt das Kühlwasser vom Kühlmantel der Brennkraftmaschine 1 durch die Heizwasser-Zuführleitung 10, den Wärmetauscher 9 und die Heizwasser-Rücklaufleitung 8 zur Kühlwasser-Zuführleitung 4, so daß nun die Getriebeeinheit 17 zur Aufrechterhaltung einer optimalen Betriebstemperatur gekühlt wird.At the same time, the cooling water flows from the cooling jacket of the internal combustion engine 1 through the heating water supply line 10, the heat exchanger 9 and the heating water return line 8 to the cooling water supply line 4, so that now the Gear unit 17 cooled to maintain an optimal operating temperature will.

Die Erfindung ist nicht ausschließlich auf einen Wärmetauscher beschränkt, der an ein Kühlsystem einer Brennkraftmaschine angeschlossen ist. Vielmehr kann die Ertär-Dung der Getriebeeinheit auch durch die abgaswärme einer Brennkraftmaschine erfolgen, in einer sinnvollen Kombination der Abgaswärme und des Kühlsystemes, oder durch einen elektrisch betriebenen Wärmetauscher.The invention is not limited exclusively to a heat exchanger, which is connected to a cooling system of an internal combustion engine. Rather can the grounding of the gear unit also through the exhaust gas heat of an internal combustion engine take place in a sensible combination of the exhaust gas heat and the cooling system, or through an electrically operated heat exchanger.

LeerseiteBlank page

Claims (3)

anspruche 1. Antriebseinheit, insbesonders für Kraftfahrzeuge, die eine Brennkraftmaschine und eine Getriebeeinheit umfaßt und der Wärmetauscher zugeordnet sind, d a -d u r c h g e k e n n z e i c h n e t, daß die Temperatur der Getriebeeinheit (17) durch wenigstens einen Wärmetauscher (9) beeinflußbar ist.Claims 1. Drive unit, especially for motor vehicles that an internal combustion engine and a gear unit and associated with the heat exchanger are, that the temperature of the transmission unit (17) can be influenced by at least one heat exchanger (9). 2. Antriebseinheit nach Anspruch 1, wobei die Brennkraftmaschine eine flüssigkeitsgekühlte Brennkraftmaschine ist, d a d u r c h g e k e n n z e i c h n e t, daß der Wärmetauscher (9) an den Kühlkreislauf der Brennkraftmaschine (i) angeschlossen ist.2. Drive unit according to claim 1, wherein the internal combustion engine is a is a liquid-cooled internal combustion engine, d u r c h g e k e n n n z e i c h n e t that the heat exchanger (9) is connected to the cooling circuit of the internal combustion engine (i) connected. 3. Antriebseinheit nach Anspruch 1, wobei die Getriebeeinheit ein Wechselgetriebe und ein chsgetriebe umfaßt, d a d u r c h g e k e n n z e i c h n e t, daß die Temperatur des Wechselgetrieben (13) durch einen Wärmetauscher (14) und die Temperatur des Achsgetriebes (12) durch einen Wärmetauscher (15) beeinflußbar ist.3. Drive unit according to claim 1, wherein the gear unit is a Change-speed transmission and a ch-transmission includes, d u r c h g e n n n z e i c h n e t that the temperature of the gearbox (13) through a heat exchanger (14) and the temperature of the axle drive (12) can be influenced by a heat exchanger (15) is.
DE19823201443 1982-01-19 1982-01-19 Drive unit, especially for motor vehicles Withdrawn DE3201443A1 (en)

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Application Number Priority Date Filing Date Title
DE19823201443 DE3201443A1 (en) 1982-01-19 1982-01-19 Drive unit, especially for motor vehicles

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DE19823201443 DE3201443A1 (en) 1982-01-19 1982-01-19 Drive unit, especially for motor vehicles

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DE3201443A1 true DE3201443A1 (en) 1983-05-19

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3403435A1 (en) * 1983-02-22 1984-08-30 Nissan Motor Co., Ltd., Yokohama, Kanagawa Transmission having a device for temperature control of a lubricating fluid
US5024377A (en) * 1990-01-19 1991-06-18 Frank Harrison Vehicle heating system
US5325448A (en) * 1987-11-16 1994-06-28 Canon Kabushiki Kaisha Image treatment method and apparatus with error dispersion and controllable quantization
EP0736703A1 (en) * 1995-04-05 1996-10-09 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Device for influencing the oil temperature in vehicle transmissions
EP0787929A2 (en) 1996-02-01 1997-08-06 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Device for temperature controlling of transmission oil of a motor vehicle
EP0785379A3 (en) * 1996-01-16 1998-07-01 Eaton Corporation Transmission cooling system
DE19912327A1 (en) * 1999-03-19 2000-09-21 Zahnradfabrik Friedrichshafen Method and device for lubricating a transmission of a motor vehicle
DE10006708A1 (en) * 2000-02-15 2001-08-23 Man Nutzfahrzeuge Ag Supporting ease of changing of manually operated hydrostatic gear change involves switching on heating element in gear change housing for external temperature of about 0 degrees C
BE1014087A3 (en) * 1998-03-27 2003-04-01 Caterpillar Inc Cooling system for a machine.
US6871703B2 (en) 2001-11-24 2005-03-29 Daimlerchrysler Ag Method and device for controlling the operating temperature of a hydraulic operating medium of a drive unit of a vehicle
EP1348846A3 (en) * 2002-03-27 2006-01-18 Calsonic Kansei Corporation Water-cooled type engine cooling apparatus and transmission oil cooler module
EP1873421A1 (en) * 2006-06-27 2008-01-02 GM Global Technology Operations, Inc. Method and apparatus for improving vehicle fuel economy
WO2008094110A1 (en) * 2007-01-30 2008-08-07 Scania Cv Ab Arrangement for heating oil in a gearbox
DE102007031788A1 (en) 2007-07-07 2009-01-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle gearbox oil heating, on a cold start, has an exhaust gas flow channel with a valve to set the flow through a heat exchanger at the oil sump
DE102010009508A1 (en) 2010-02-26 2011-09-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle, particularly all-wheel-drive motor vehicle, has combustion engine and cooling system for combustion engine, where cooling system has cooler and pipes for guiding cooling water
EP2915686A1 (en) * 2014-03-03 2015-09-09 CNH Industrial Belgium nv Work vehicle with traction gearbox cooling

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3403435A1 (en) * 1983-02-22 1984-08-30 Nissan Motor Co., Ltd., Yokohama, Kanagawa Transmission having a device for temperature control of a lubricating fluid
US5325448A (en) * 1987-11-16 1994-06-28 Canon Kabushiki Kaisha Image treatment method and apparatus with error dispersion and controllable quantization
US5024377A (en) * 1990-01-19 1991-06-18 Frank Harrison Vehicle heating system
EP0736703A1 (en) * 1995-04-05 1996-10-09 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Device for influencing the oil temperature in vehicle transmissions
DE19512783A1 (en) * 1995-04-05 1996-10-10 Bayerische Motoren Werke Ag Device for influencing the transmission oil temperature in motor vehicles
CN1075004C (en) * 1996-01-16 2001-11-21 易通公司 Transmission cooling system
EP0785379A3 (en) * 1996-01-16 1998-07-01 Eaton Corporation Transmission cooling system
EP0787929A2 (en) 1996-02-01 1997-08-06 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Device for temperature controlling of transmission oil of a motor vehicle
EP0787929A3 (en) * 1996-02-01 1998-07-15 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Device for temperature controlling of transmission oil of a motor vehicle
US5960872A (en) * 1996-02-01 1999-10-05 Bayerische Motoren Werke Aktiengesellschaft Device for stabilizing the temperature of the transmission oil of a motor vehicle
BE1014087A3 (en) * 1998-03-27 2003-04-01 Caterpillar Inc Cooling system for a machine.
DE19912327A1 (en) * 1999-03-19 2000-09-21 Zahnradfabrik Friedrichshafen Method and device for lubricating a transmission of a motor vehicle
DE10006708A1 (en) * 2000-02-15 2001-08-23 Man Nutzfahrzeuge Ag Supporting ease of changing of manually operated hydrostatic gear change involves switching on heating element in gear change housing for external temperature of about 0 degrees C
US6871703B2 (en) 2001-11-24 2005-03-29 Daimlerchrysler Ag Method and device for controlling the operating temperature of a hydraulic operating medium of a drive unit of a vehicle
EP1348846A3 (en) * 2002-03-27 2006-01-18 Calsonic Kansei Corporation Water-cooled type engine cooling apparatus and transmission oil cooler module
US8042609B2 (en) 2006-06-27 2011-10-25 GM Global Technology Operations LLC Method and apparatus for improving vehicle fuel economy
EP1873421A1 (en) * 2006-06-27 2008-01-02 GM Global Technology Operations, Inc. Method and apparatus for improving vehicle fuel economy
CN101617103B (en) * 2007-01-30 2012-01-11 斯堪尼亚有限公司 Arrangement for heating oil in a gearbox
WO2008094110A1 (en) * 2007-01-30 2008-08-07 Scania Cv Ab Arrangement for heating oil in a gearbox
US8100106B2 (en) 2007-01-30 2012-01-24 Scania Cv Ab (Publ) Arrangement for heating oil in a gearbox
DE102007031788A1 (en) 2007-07-07 2009-01-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle gearbox oil heating, on a cold start, has an exhaust gas flow channel with a valve to set the flow through a heat exchanger at the oil sump
DE102010009508A1 (en) 2010-02-26 2011-09-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle, particularly all-wheel-drive motor vehicle, has combustion engine and cooling system for combustion engine, where cooling system has cooler and pipes for guiding cooling water
DE102010009508B4 (en) 2010-02-26 2023-01-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Motor vehicle with cooled front axle drive
EP2915686A1 (en) * 2014-03-03 2015-09-09 CNH Industrial Belgium nv Work vehicle with traction gearbox cooling
BE1022074B1 (en) * 2014-03-03 2016-02-15 Cnh Industrial Belgium Nv VEHICLE WITH COOLING FOR TRACTION GEARBOX
US9487075B2 (en) 2014-03-03 2016-11-08 Cnh Industrial America Llc Work vehicle with traction gearbox cooling

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