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CN101417608A - Regulating transmission fluid and engine coolant temperatures in a motor vehicle - Google Patents

Regulating transmission fluid and engine coolant temperatures in a motor vehicle Download PDF

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Publication number
CN101417608A
CN101417608A CNA2008101729795A CN200810172979A CN101417608A CN 101417608 A CN101417608 A CN 101417608A CN A2008101729795 A CNA2008101729795 A CN A2008101729795A CN 200810172979 A CN200810172979 A CN 200810172979A CN 101417608 A CN101417608 A CN 101417608A
Authority
CN
China
Prior art keywords
exch
engine coolant
outlet
temperature
oil
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.)
Pending
Application number
CNA2008101729795A
Other languages
Chinese (zh)
Inventor
詹姆士·T·古登
布赖恩·D·比舍普
格里高利·D·加德纳
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of CN101417608A publication Critical patent/CN101417608A/en
Pending legal-status Critical Current

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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

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  • 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

A system for controlling the temperature of a transmission fluid includes a first heat exchanger communicating with a source of engine coolant for transferring heat between the engine coolant and the transmission fluid and including a first outlet through which transmission fluid exits the first heat exchanger, a second heat exchanger through which air may flow for transferring 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.

Description

The transmission oil in the adjusting power actuated vehicle and the temperature of engine coolant
Technical field
Present invention relates in general to regulate the device of the temperature of transmission oil in the power actuated vehicle and engine coolant.
Background technology
The change-speed box cooling system can comprise oil-hydrocooler or oil-air cooler, or comprises both, and it can remove the heat that transmission oil contains, and has certain size to hold the thermal load that produces when turning round under the service conditions of change-speed box in harshness.In order to reduce the change-speed box friction, wish under high relatively temperature, to turn round change-speed box.Higher temperature reduces oil viscosity, and this is for the bigger contribution of internal friction.
The cooling vessel bypass disc is used in the transfer of heat that reduces when not wishing to cool off from transmission oil, so that internal friction can the oily operating temperature to expectation of heating transmission.But the warming-up rate limited influence of cooling vessel bypass disc after for cold start.
Oil-the hydrocooler that is arranged in the temperature booster loop uses engine coolant to come heating transmission, particularly after cold start.This cooling vessel is better than being installed in the oil-hydrocooler in the radiator, and in the oil-hydrocooler in radiator, because temperature control equipment cuts out, the operating temperature that driving engine reaches its expectation does not have cooling system conditioner to flow through before.Provide a kind of solution though be arranged in the oil-hydrocooler in engine coolant loop for light-duty vehicle, but it can not cool off heavy-duty applications, for example heavy duty truck and other tractor trucks, this is because their higher coolant temperature and needs that change-speed box is turned round under the temperature that approaches high-engine coolant temperature.
In addition, when engine coolant is used for heating transmission, the performance of the crew module's temperature booster of having traded off.Heating transmission produces lower coolant temperature, heater performance is reduced and heat delivery is slowed down to the crew module.
Summary of the invention
A kind of system that controls the temperature of transmission oil, comprise with the engine coolant source and being communicated with between engine coolant and transmission oil (being sometimes referred to as oil or ATF (automatic transmission fluid)), to transmit first H Exch of heat, this first H Exch comprises first outlet, leaves first H Exch by the first outlet transmission oil; Air can flow through to transmit second H Exch of heat between transmission oil and air, this second H Exch comprises second import and second outlet, enter second H Exch by the second import transmission oil, leave second H Exch by the second outlet transmission oil; And first bypass disc, this first bypass disc is used for when the temperature of the transmission oil that leaves first outlet is higher than first reference temperature, the connection of opening and closing second import to the second outlet alternatively, and when the temperature of the transmission oil that leaves first outlet is lower than second reference temperature, walk around second H Exch.
As long as the heater core exhaust temperature is lower than the threshold value of expectation, engine coolant side bypass disc is just walked around the ATF H Exch.Then first H Exch almost can be virtually any size, and the temperature increment rate that need not trade off and be lower than this threshold value heater core.Be higher than this temperature threshold, bypass disc will be opened, thereby allow cooling system conditioner to enter first H Exch.
ATF always flows through H Exch.The temperature of the oil that the second bypass disc sensing returns, if this temperature is lower than reference temperature, for example 93.3 ℃ (=200 ℉), and oil will be back to change-speed box, and this is the bypass of any auxiliary cooler in the ATF cooling loop.If the temperature of oil is higher than reference temperature, then the ATF bypass disc is opened, thereby allows oil to flow to auxiliary cooler, is back to change-speed box then.
When system comprised water side bypass, ATF bypass and first H Exch as an assembly, this system provided extra assembling advantage.
According on the other hand, a kind of be used to regulate the transmission oil in the power actuated vehicle with engine coolant source and change-speed box oil sources and the method for temperature of engine coolant are provided.This method may further comprise the steps: first H Exch that is communicated with the engine coolant source is provided, this first H Exch comprises first import and first outlet, enter first H Exch by the first import transmission oil from the change-speed box oil sources, leave first H Exch by the first outlet transmission oil; Use first H Exch between engine coolant and transmission oil, to transmit heat; Second H Exch is provided, and this second H Exch comprises second import and second outlet, enters second H Exch by the second import transmission oil, leaves second H Exch by the second outlet transmission oil; Use second H Exch between transmission oil and ambient air, to transmit heat; When the temperature of the transmission oil that leaves first outlet is higher than first reference temperature, open the connection of second import to the second outlet; And when the temperature of the transmission oil that leaves first outlet is lower than first reference temperature, close the connection of second import to the second outlet.
The field of application of preferred embodiment will become apparent from the specific embodiment, claim and accompanying drawing.Though should be understood that to show the preferred embodiments of the present invention, provide a description and concrete example just in order to illustrate.Variations and modifications to description embodiment and example will become apparent those skilled in the art.
To be more readily understood the present invention with reference to the specific embodiment in conjunction with the drawings.
Description of drawings
Accompanying drawing is the scheme drawing of system that is used to control the temperature of automatic transmission fluid.
The specific embodiment
Automatic transmission with hydraulic torque converter 10 comprises the oil pan tray 12 as the change-speed box oil sources, transmission oil is supplied to the inlet side of transmission pump (not shown) from this oil pan tray 12, carry at transmission pump internal speed changer oil oil circuit from change-speed box after lubricated, and take away heat from power-transfer clutch, bearing, axle, gear and other change-speed box members.
First H Exch or the oil to-water heat exchanger 14 that are communicated with change-speed box oil sources 12 by oil circuit 16 are applicable to the conveying engine coolant and transmit heat between engine coolant and transmission oils.H Exch 14 comprises first import 18 and first outlet 20, enters H Exch 14 by first import, 18 transmission oils from oil circuit 16, leaves H Exch and enters oil circuit 22 by first outlet, 20 transmission oils.
The second H Exch auxiliary cooler 24 comprises passage, can flow through by this passage ambient air, transmits heat between transmission oil and air.H Exch 24 comprises second import 26 and second outlet 30, enters second H Exch by second import, 26 transmission oils through oil circuit 28, leaves second H Exch by second outlet, 30 transmission oils through oil circuit 32.
First bypass disc or ATF bypass disc 34 are provided on oil circuit 22 so that transmission oil leaves H Exch 14 from the outlet 20 of H Exch 14, and first bypass disc 34 comprise the outlet 36, in oil circuit 38, be delivered to change-speed box oil sources 12 by exporting 36 transmission oils.Oil circuit 28,32 is communicated with bypass disc 34 and H Exch 24.
When the temperature of the transmission oil that leaves first outlet 20 was higher than first reference temperature, bypass disc 34 was opened the connection of second import, 26 to second outlets 30.When the temperature of the transmission oil that leaves first outlet 20 was lower than second reference temperature, bypass disc 34 made transmission oil walk around second H Exch 24 and flows directly into change-speed box oil sources 12.When the temperature of the transmission oil that leaves first outlet 20 was higher than first reference temperature, bypass disc 34 was closed the connection of second import, 26 to second outlets 30.
Preferably, first reference temperature is about 93.3 ℃ (=200 ℉), and second reference temperature is about 87.8 ℃ (=190 ℉).Preferably, bypass disc 34 is the bypass discs by the wax motor that is used for the automatic transmission with hydraulic torque converter chiller circuit (wax motor) type of various automakers' manufacturings.
Driving engine 40 comprises chamber 42, it is the engine coolant source, engine coolant is around the combustion chamber circulation of driving engine in chamber 42, and engine coolant is fed to the 3rd H Exch from this chamber 42, it can comprise radiator 44 or heater core 46, maybe can comprise radiator and heater core.The engine coolant loop comprises coolant line 48, and it carries cooling system conditioner to heater core 46 from coolant source (chamber) 42; Coolant line 50, it carries cooling system conditioner from heater core 46; And coolant line 52, it carries cooling system conditioner to chamber 42.
Coolant line 50,52 is carried cooling system conditioner to the second bypass discs or cooling system conditioner bypass disc 54 and is left from second bypass disc 54.When the temperature of the engine coolant that enters second bypass disc 54 is lower than the 3rd reference temperature, the connection between second bypass disc, 54 opening and closing heater cores 46 and the chamber 42, thus cause cooling system conditioner to walk around H Exch 14.When the temperature of the engine coolant that enters bypass disc 54 was higher than the 3rd reference temperature, bypass disc 54 was closed the connection between heater core 46 and the chamber 42.
Preferably, the 3rd reference temperature is about-0.11 ℃ (=30 ℉).Preferably, bypass disc 34 is the composite metal bypass discs that are generally used for walking around radiator.
Preferably, heater core 46 is positioned at crew module 60, and driving engine 40 and radiator 44 are positioned at machinery space 62, and cooling system conditioner bypass disc 54, ATF bypass disc 34 and H Exch 14 are integrated in the assembly 66, and assembly 66 is connected to change-speed box 10 and is positioned at machinery space.Alternatively, cooling system conditioner bypass disc 54 and H Exch 14 are integrated in the assembly, and this assembly is connected to change-speed box 10 and is positioned at machinery space, are auxiliary cooler but ATF bypass disc 34 is positioned at H Exch 24, or in the oil circuit 28,32.
According to the regulation of patent law, preferred embodiment has been described.Yet, should note can also implementing alternate embodiment except the embodiment that specifically describes and illustrate.

Claims (9)

1. system that is used for regulating at the power actuated vehicle with explosive motor and automatic transmission with hydraulic torque converter the temperature of transmission oil and engine coolant comprises:
The engine coolant source;
The change-speed box oil sources;
First H Exch that is communicated with described engine coolant source, described first H Exch comprises first import and first outlet, enter described first H Exch by the described first import transmission oil from described change-speed box oil sources, leave described first H Exch by the described first outlet transmission oil, between engine coolant and transmission oil, to transmit heat;
Second H Exch that air can flow through, described second H Exch comprises second import and second outlet, enter described second H Exch by the described second import transmission oil, leave described second H Exch by the described second outlet transmission oil, between transmission oil and air, to transmit heat;
First bypass disc, described first bypass disc is used for when the temperature of the transmission oil that leaves described first outlet is higher than first reference temperature, open the connection of described second import to described second outlet, and when the temperature of the transmission oil that leaves described first outlet is lower than second reference temperature, close the connection of described second import to described second outlet.
2. the system as claimed in claim 1 is characterized in that, described first H Exch and first bypass disc are connected to change-speed box.
3. the system as claimed in claim 1 is characterized in that, also comprises:
The 3rd H Exch that is communicated with described engine coolant source; And
Second bypass disc, described second bypass disc is used for when the temperature of the engine coolant that enters described second bypass disc is higher than the 3rd reference temperature, open interior engine coolant of described the 3rd H Exch and the connection between the engine coolant in described first H Exch, and when the temperature of the engine coolant that enters described second bypass disc is lower than the 3rd reference temperature, close interior engine coolant of described the 3rd H Exch and the connection between the engine coolant in described first H Exch.
4. the system as claimed in claim 1 is characterized in that, described first H Exch, first bypass disc and second bypass disc are connected to described change-speed box.
5. the system as claimed in claim 1 is characterized in that, described the 3rd H Exch also comprises the heater core of the air in being used for from engine coolant transmission heat to the crew module of vehicle.
6. the system as claimed in claim 1 is characterized in that, described the 3rd H Exch also comprises and is used for transmitting the radiator of heat to ambient air from engine coolant.
7. the system as claimed in claim 1 is characterized in that, described the 3rd H Exch also comprises:
The heater core of the air in being used for from engine coolant transmission heat to the crew module of vehicle; And
Be communicated with described heater core, be used for transmitting the radiator of heat to ambient air from engine coolant.
8. the system as claimed in claim 1 is characterized in that, also is included in the connection between described first outlet and the described change-speed box oil sources.
9. the system as claimed in claim 1 is characterized in that, described first bypass disc also is included in the connection between described first outlet and the described change-speed box oil sources.
CNA2008101729795A 2007-10-23 2008-10-22 Regulating transmission fluid and engine coolant temperatures in a motor vehicle Pending CN101417608A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/876,834 2007-10-23
US11/876,834 US20090101312A1 (en) 2007-10-23 2007-10-23 Regulating Transmission Fluid and Engine Coolant Temperatures in a Motor Vehicle

Publications (1)

Publication Number Publication Date
CN101417608A true CN101417608A (en) 2009-04-29

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US (1) US20090101312A1 (en)
CN (1) CN101417608A (en)
DE (1) DE102008037467B4 (en)
GB (1) GB2455170A (en)

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GB2455170A (en) 2009-06-03
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DE102008037467A1 (en) 2009-05-28
GB0817134D0 (en) 2008-10-29

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