GB2455170A - Motor vehicle transmission fluid and engine coolant temperature regulating apparatus - Google Patents
Motor vehicle transmission fluid and engine coolant temperature regulating apparatus Download PDFInfo
- Publication number
- GB2455170A GB2455170A GB0817134A GB0817134A GB2455170A GB 2455170 A GB2455170 A GB 2455170A GB 0817134 A GB0817134 A GB 0817134A GB 0817134 A GB0817134 A GB 0817134A GB 2455170 A GB2455170 A GB 2455170A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat exchanger
- transmission fluid
- engine coolant
- temperature
- transmission
- 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- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 69
- 239000002826 coolant Substances 0.000 title claims abstract description 51
- 239000012530 fluid Substances 0.000 title claims abstract description 51
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 5
- 239000003570 air Substances 0.000 claims abstract description 9
- 239000012080 ambient air Substances 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000013529 heat transfer fluid Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001010 compromised effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- 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
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/08—Arrangements of lubricant coolers
-
- 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
-
- 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
- F01P2060/08—Cabin heater
-
- 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
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Details Of Gearings (AREA)
Abstract
An apparatus for regulating the temperature of transmission fluid (e.g. oil or ATF) from an automatic transmission 10 and engine coolant in a vehicle comprises a source of engine coolant 42, a source of transmission fluid 12, a first heat exchanger 14 for transferring heat between the engine coolant and the transmission fluid, and a second heat exchanger 24 for transferring heat between the transmission fluid and a further heat transfer fluid, such as air. A bypass valve 34 places the first heat exchanger into fluid communication with the second heat exchanger when the temperature of the transmission fluid exiting the first heat exchanger is greater than a first reference temperature, and bypasses the second heat exchanger when the temperature of the transmission fluid exiting the first heat exchanger is less than a second reference temperature. Preferably, a third heat exchanger is provided, comprising a radiator 44 and/or a heater core 46, where the radiator may transfer heat from the engine coolant to ambient air, and the heater core may transfer heat from the engine coolant to air in a passenger compartment of the vehicle.
Description
REGULATING TRANSMISSION FLUID AND ENGINE COOLANT
TEMPERATURES IN A MOTOR VEHICLE
This invention relates generally to apparatus for regulating the temperature of transmission fluid and engine coolant in a motor vehicle. A transmission cooling system may include an oil-to-water cooler or an oil-to-air cooler, or both of these, which remove heat contained in the transmission oil and are sized to accommodate a heat load produced when the transmission is operating under severe duty conditions. To reduce transmission friction, it is desirable to run the transmission at a relatively high temperature. The higher temperature reduces oil viscosity, which is one of the larger contributors to internal friction.
A cooler bypass valve may be used to reduce heat transfer from the transmission oil when cooling is not desired, so that internal friction can warm the transmission oil to the desired operating temperature. But cooler bypass valves have limited effect on warm up rates after a cold start.
An oil-to-water cooler located in the heater loop uses engine coolant to heat the transmission, especially after cold starts. This cooler has an advantage over an oil-to-water cooler installed in the radiator, in which no coolant flows until the engine reaches its desired operating temperature due to a closed thermostat. Although the oil-to-water cooler located in the engine coolant loop provides a solution for light duty vehicles, it is not capable of cooling heavier duty applications, such heavy duty trucks and other towing vehicles, due to their high coolant temperatures and a need for the transmission to run at temperatures close to the maximum engine coolant temperature.
Furthermore, performance of the passenger compartment heater is compromised when engine coolant is used to heat the transmission. Warming the transmission causes a lower colant temperature, which reduces heater performance and slows delivery of heat to the passenger compartment.
According to the present invention there is provided an apparatus in accordance with Claim I. In one embodiment, an apparatus or system for controlling the temperature of a transmission fluid includes a first heat exchanger communicating with a source of engine coolant for transfering heat between the engine coolant and the transmission fluid (sometimes called oil or ATF) and including a first outlet through which transmission fluid exits the first heat exchanger, a second heat exchanger through which air may flow for transfelTing heat between the transmission fluid and the air and including a second inlet through which transmission fluid enters the second heat exchanger, and second outlet through which transmission fluid exits the second heat exchanger, and a first bypass valve for alternately opening and closing the second inlet and the second outlet when a temperature of transmission fluid exiting the first outlet is greater than a first reference temperature, and for bypassing the second heat exchanger when the temperature of transmission fluid exiting the first outlet is less than the second reference temperature.
In one embodiment, the engine coolant side bypass valve bypasses the ATF heat exchanger whenever the heat core discharge temperature is below a desired threshold. Then the first heat exchanger can be nearly any size without compromising the rate at which temperature of the heater core increases below that threshold. Above that temperature threshold, the bypass valve will open, thereby admitting coolant into the first heat exchanger.
in one embodiment, ATF always flows through the heat exchanger. The second bypass valve senses the return oil temperature and, that temperature is below a reference temperature, e.g. 2000 F, it will return to the transmission, which is a bypass to any auxiliary cooler in the ATF cooling loop. If the oil temperature is greater than the reference temperature, the ATF bypass valve opens, thereby admitting oil to flow to the auxiliary cooler, then return to the transmission.
The system may provide additional packaging advantages when including the water-side bypass, ATF-bypass and first heat exchanger as one assembly.
The scope of applicability of the preferred embodiment will become apparent from the following detailed description, claims and drawings. It should be understood, that the description and specific examples, although indicating preferred embodiments of the invention, are given by way of illustration only. Various changes and modifications to the described embodiments and examples will become apparent to those skilled in the art.
The invention will he more readily understood by reference to the following description, taken with the accompanying drawing, in which: The figure is a schematic diagram of a system for controlling the temperature of automatic transmission fluid.
An automatic transmission 10 includes a oil sump 12, which is a source of transmission fluid, from which transmission fluid is supplied to the intake side of a tralismission pump (not shown) and into which fluid is delivered from the hydraulic circuit of the transmission after the fluid lubricates and carries heat from the clutches, bearings, shafts, gears and other components of the transmission.
A first heat exchanger 14, which communicates with the source of transmission fluid 12 through an oil line 16, is adapted to carry engine coolant and to transfer heat between the engine coolant and the transmission fluid. Heat exchanger 14 includes a first inlet 18 through which transmission fluid enters heat exchanger 14 from line 16. and a first outlet 20 through which transmission fluid exits the heat exchanger and enters a line 22.
A second heat exchanger 24 includes a passageway through which ambient air may flow, transfering heat between the transmission fluid and the air. Heat exchanger 24 includes a second inlet 26, through which transmission fluid enters the second heat exchanger through an oil line 28, and a second outlet 30, through which transmission fluid exits the second heat exchanger through an oil line 32.
A first bypass valve 34 is supplied through line 22 with transmission fluid exiting heat exchanger 14 at outlet 20 and includes an outlet 36, through which transmission fluid is carried in oil line 38 to the fluid source 12. Oil lines 28, 32 provide communication between bypass valve 34 and heat exchanger 24.
Bypass valve 34 opens communication through the second iiilet 26 and second outlet 30 when the temperature of transmission fluid exiting the first outlet is greater than a first reference temperature. Bypass valve 34 causes transmission fluid to bypass second heat exchanger 24 and to flow directly into fluid source 12 when the temperature of transmission fluid exiting the first outlet 20 is lower than a second reference temperature. This bypass valve 34 closes communication through the second inlet 26 and second outlet 30 when the temperature of transmission fluid exiting the first outlet 20 is greater than the first reference temperature.
Preferably the first reference temperature is about 200°F, and the second reference temperature is about 190°F. Preferably bypass valve 34 is a bypass valve of the wax motor type that is used in automatic transmission cooler loops by various automotive manufacturers.
Engine 40 includes a chamber 42, i.e., a source of engine coolant, in which engine coolant circulates around the combustion chambers of the engine and from which engine coolant is supplied to a third heat exchanger, which may include a radiator 44, or a heater core 46. or both the radiator and heater core. An engine coolant circuit includes coolant line 48, which carries coolant from the coolant source 42 to heater core 46: a coolant line 50, which carries coolant from the heater core 46; and coolant line 52, which carries coolant to the engine 42.
Coolant lines 50, 52 carry coolant to and from a second bypass valve 54. The second bypass valve 54 opens and closes communication between heater core 46 and engine 42 when the temperature of engine coolant entering bypass valve 54 is less than a third reference temperature, which results in the coolant bypassing heat exchanger 14. Bypass valve 54 closes communication between heater core 46 and engine 42 when the temperature of the engine coolant entering valve 54 is greater than the third reference temperature.
Preferably the third reference temperature is about 30°F. Preferably bypass valve 34 is a bimetal bypass valve used frequently to bypass the radiator.
Preferably heater core 46 is located in a passenger compartment 60, engine 40 and radiator 44 are located in an engine compartment 62, and coolant bypass valve 34, ATF bypass valve 54 and heat exchanger 14 are incorporated in a subassembly 64, which is attached to the transmission 10 and located in the engine compartment. Alternatively, coolant bypass valve 54 and heat exchanger 14 are incorporated in a subassembly, which is attached to the transmission 10 and located in the engine compartment, but the ATF bypass valve 34 is located in either heat exchanger 24, i.e., the auxiliary cooler, or in lines 28, 32.
In accordance with the provisions of the patent statutes, the preferred embodiment has been described. However, it should be noted that the alternate embodiments can be practiced otherwise than as specifically illustrated and described.
Claims (10)
1. An apparatus for regulating the temperature of transmission fluid and engine coolant in a motor vehicle having an internal combustion engine and automatic transmission, the apparatus compising: a source of engine coolant; a source of transmission fluid; a first heat exchanger communicating with the source of engine coolant, including a first inlet through which transmission fluid enters the first heat exchanger from the source of transmission fluid, and a first outlet through which transmission fluid exits the first heat exchanger. for transfering heat between the engine coolant and the transmission fluid; a second heat exchanger through which air may flow, including a second inlet through which transmission fluid enters the second heat exchanger, and second outlet 1 5 through which transmission fluid exits the second heat exchanger, for transferring heat between the transmission fluid and the air; a first bypass valve for opening communication through the second inlet and the second outlet when a temperature of transmission fluid exiting the first outlet is greater than a first reference temperature, and for closing communication through the second inlet and the second outlet when the temperature of transmission fluid exiting the first outlet is less than a second reference temperature.
2. The apparatus of claim I wherein the first heat exchanger and the first bypass valve are connected to the transmission.
3. The apparatus of claim I or 2 further comprising: a third heat exchanger communicating with the source of engine coolant; and a second bypass valve for opening communication between the engine coolant in the third heat exchanger and the engine coolant in the first heat exchanger when a temperature of engine coolant entering the second bypass valve is greater than a third reference temperature, and closing communication between the engine coolant in the third heat exchanger and the engine coolant in the first heat exchanger when the temperature of said engine coolant entering the second bypass valve is less than the third reference temperature.
4. The apparatus of claim 3 wherein the second bypass valve is connected to the transmission.
5. The apparatus of claim 3 or 4 wherein the third heat exchanger comprises a heater core for transferring heat from the engine coolant to air in a passenger compartment of the vehicle.
6. The apparatus of any of claims 3 to 5 wherein the third heat exchanger comprises a radiator for transferring heat from the engine coolant to ambient air.
7. The apparatus of claim 6 wherein the radiator communicates with the heater core.
8. The apparatus of any preceding claim further comprising a connection between the first outlet and the source of transmission fluid.
9. The apparatus of any preceding claim wherein the first bypass valve further includes a connection between the first outlet and the source of transmission fluid.
10. An apparatus substantially as hereinbefore described and illustrated in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/876,834 US20090101312A1 (en) | 2007-10-23 | 2007-10-23 | Regulating Transmission Fluid and Engine Coolant Temperatures in a Motor Vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0817134D0 GB0817134D0 (en) | 2008-10-29 |
| GB2455170A true GB2455170A (en) | 2009-06-03 |
Family
ID=39951833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0817134A Withdrawn GB2455170A (en) | 2007-10-23 | 2008-09-19 | Motor vehicle transmission fluid and engine coolant temperature regulating apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20090101312A1 (en) |
| CN (1) | CN101417608A (en) |
| DE (1) | DE102008037467B4 (en) |
| GB (1) | GB2455170A (en) |
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT506086B1 (en) * | 2008-03-11 | 2009-06-15 | Bhdt Gmbh | COOLING DEVICE FOR A WORKFLUID |
| US8919520B2 (en) * | 2008-11-05 | 2014-12-30 | Ford Global Technologies, Llc | Transmission with durability enhancement techniques |
| US8409055B2 (en) * | 2009-11-11 | 2013-04-02 | Ford Global Technologies, Llc | Powertrain thermal management system |
| US8205709B2 (en) | 2010-05-21 | 2012-06-26 | Ford Global Technologies, Llc. | Transmission fluid warming and cooling system |
| US8631772B2 (en) * | 2010-05-21 | 2014-01-21 | Ford Global Technologies, Llc | Transmission fluid warming and cooling method |
| US8783433B2 (en) | 2010-10-02 | 2014-07-22 | Ford Global Technologies, Llc | Dry-clutch transmission with cooling techniques |
| US8463495B2 (en) * | 2010-12-01 | 2013-06-11 | GM Global Technology Operations LLC | Method for controlling exhaust gas heat recovery systems in vehicles |
| US8965628B2 (en) | 2010-11-16 | 2015-02-24 | Ford Global Technologies, Llc | Powertrain thermal management system for a dry-clutch transmission |
| US20120181001A1 (en) * | 2011-01-14 | 2012-07-19 | Gregory Alan Marsh | Thermal management systems and methods |
| DE102011100803A1 (en) | 2011-05-06 | 2012-11-08 | Audi Ag | clutch transmission |
| KR101316463B1 (en) * | 2011-06-09 | 2013-10-08 | 현대자동차주식회사 | Integrated Heat Management System in Vehicle and Heat Management Method thereof |
| US9022176B2 (en) * | 2011-10-14 | 2015-05-05 | Gm Global Technology Operations, Llc | Temperature management system for transmission |
| CA2900119A1 (en) * | 2013-03-15 | 2014-09-18 | Dana Canada Corporation | Valve system configurations for warming and cooling transmission fluid |
| US9796244B2 (en) * | 2014-01-17 | 2017-10-24 | Honda Motor Co., Ltd. | Thermal management system for a vehicle and method |
| US9835060B2 (en) * | 2014-01-27 | 2017-12-05 | Ford Global Technologies, Llc | Thermostatic bypass valve |
| US9759114B2 (en) | 2014-06-17 | 2017-09-12 | Ford Global Technologies, Llc | Selective powertrain heating system |
| US9964019B2 (en) * | 2014-11-19 | 2018-05-08 | Ford Global Technologies, Llc | Method and system for a dual loop coolant system |
| JP6311622B2 (en) * | 2015-02-04 | 2018-04-18 | トヨタ自動車株式会社 | Vehicle thermal management system |
| DE102016203212A1 (en) | 2015-03-02 | 2016-09-08 | Ford Global Technologies, Llc | Method for operating a heat exchanger arrangement in a motor vehicle and heat exchanger arrangement for a motor vehicle |
| DE102015203648B3 (en) * | 2015-03-02 | 2016-03-31 | Ford Global Technologies, Llc | Method for operating a heat exchanger arrangement in a motor vehicle and heat exchanger arrangement for a motor vehicle |
| DE202015101010U1 (en) | 2015-03-02 | 2015-03-20 | Ford Global Technologies, Llc | Heat exchanger arrangement for a motor vehicle |
| US10473209B2 (en) | 2015-07-29 | 2019-11-12 | Zhejiang Sanhua Automotive Components Co., Ltd. | Heat exchange device |
| CN106402356B (en) * | 2015-07-29 | 2019-12-06 | 浙江三花汽车零部件有限公司 | heat exchange device |
| CN106402355B (en) * | 2015-07-29 | 2020-03-17 | 浙江三花汽车零部件有限公司 | Heat exchange device |
| US10253679B2 (en) * | 2015-08-04 | 2019-04-09 | Honda Motor Co., Ltd. | Vehicle thermal management system, and methods of use and manufacture thereof |
| WO2017139462A1 (en) * | 2016-02-12 | 2017-08-17 | Borgwarner Inc. | Coolant system for engine transmission |
| WO2017190037A1 (en) * | 2016-04-28 | 2017-11-02 | Continental Automotive Systems, Inc | Thermal management of a system for transmission active warm up and internal electronics cooling |
| CN105782421A (en) * | 2016-06-01 | 2016-07-20 | 姜恩松 | Wet dual-clutch transmission oil temperature auxiliary control system and control method |
| US10690233B2 (en) * | 2016-07-27 | 2020-06-23 | Ford Global Technologies, Llc | Bypass control for U-flow transmission oil coolers |
| WO2018053082A1 (en) * | 2016-09-19 | 2018-03-22 | Borgwarner Inc. | Integrated heat exchanger and coolant control valve and method of operating the same |
| US10222134B2 (en) * | 2016-10-06 | 2019-03-05 | Ford Global Technologies, Llc | Dual loop cooling system energy storage and reuse |
| US10520075B2 (en) * | 2017-05-31 | 2019-12-31 | Mahle International Gmbh | Apparatus for controlling the temperature of an oil cooler in a motor vehicle |
| CN111183277B (en) | 2017-10-06 | 2022-06-28 | 达纳加拿大公司 | Active warm-up system and method |
| JP6984308B2 (en) * | 2017-10-23 | 2021-12-17 | いすゞ自動車株式会社 | Thermal control device |
| CN110925402A (en) * | 2019-12-17 | 2020-03-27 | 泸州容大智能变速器有限公司 | Heating and cooling system applied to automatic gearbox and operation method thereof |
| CN111692325A (en) * | 2020-06-30 | 2020-09-22 | 潍柴动力股份有限公司 | Vehicle, power assembly thereof, gearbox lubricating system and lubricating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264318A (en) * | 1998-03-19 | 1999-09-28 | Calsonic Corp | Temperature adjusting device for transmission oil |
| US6427640B1 (en) * | 2000-10-11 | 2002-08-06 | Ford Global Tech., Inc. | System and method for heating vehicle fluids |
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| US20060060345A1 (en) * | 2003-01-15 | 2006-03-23 | Behr Gmbh & Co. Kg | Cooling circuit, especially for a motor vehicle transmission |
| US20060060346A1 (en) * | 2004-08-30 | 2006-03-23 | Toyota Jidosha Kabushiki Kaisha | Heat exchanger structure of automatic transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5991515A (en) * | 1992-11-10 | 1999-11-23 | Adobe Systems Incorporated | Method and apparatus for compressing and decompressing data prior to display |
| US5568842A (en) * | 1994-09-02 | 1996-10-29 | Otani; Akesama | Oil control unit for high-performance vehicles |
| DE19756180A1 (en) * | 1997-12-17 | 1999-06-24 | Hyundai Motor Co Ltd | Cooler for automatic gear fluid for vehicle |
| DE60325436D1 (en) * | 2002-03-27 | 2009-02-05 | Calsonic Kansei Corp | Cooling device of a water-cooled Brennkraftmascine and transmission oil cooler module |
| US20040045749A1 (en) * | 2002-09-06 | 2004-03-11 | Ford Global Technologies, Inc. | Cooling system and method for a hybrid electric vehicle |
| JP4196802B2 (en) * | 2003-10-07 | 2008-12-17 | 株式会社デンソー | Cooling water circuit |
| CN2864546Y (en) * | 2005-11-30 | 2007-01-31 | 北汽福田汽车股份有限公司 | Radiator and vehicle mounted same |
-
2007
- 2007-10-23 US US11/876,834 patent/US20090101312A1/en not_active Abandoned
-
2008
- 2008-09-19 GB GB0817134A patent/GB2455170A/en not_active Withdrawn
- 2008-10-17 DE DE102008037467.9A patent/DE102008037467B4/en not_active Expired - Fee Related
- 2008-10-22 CN CNA2008101729795A patent/CN101417608A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264318A (en) * | 1998-03-19 | 1999-09-28 | Calsonic Corp | Temperature adjusting device for transmission oil |
| US6427640B1 (en) * | 2000-10-11 | 2002-08-06 | Ford Global Tech., Inc. | System and method for heating vehicle fluids |
| US20020128107A1 (en) * | 2001-03-09 | 2002-09-12 | Jatco Transtechnology Ltd. | Cooling system for working fluid used in automatic transmission of automotive vehicle |
| US20060060345A1 (en) * | 2003-01-15 | 2006-03-23 | Behr Gmbh & Co. Kg | Cooling circuit, especially for a motor vehicle transmission |
| US20060060346A1 (en) * | 2004-08-30 | 2006-03-23 | Toyota Jidosha Kabushiki Kaisha | Heat exchanger structure of automatic transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090101312A1 (en) | 2009-04-23 |
| DE102008037467A1 (en) | 2009-05-28 |
| DE102008037467B4 (en) | 2014-11-27 |
| CN101417608A (en) | 2009-04-29 |
| GB0817134D0 (en) | 2008-10-29 |
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