CN110925402A - Heating and cooling system applied to automatic gearbox and operation method thereof - Google Patents
Heating and cooling system applied to automatic gearbox and operation method thereof Download PDFInfo
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- CN110925402A CN110925402A CN201911297863.9A CN201911297863A CN110925402A CN 110925402 A CN110925402 A CN 110925402A CN 201911297863 A CN201911297863 A CN 201911297863A CN 110925402 A CN110925402 A CN 110925402A
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
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- 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
- F16H57/0416—Air cooling or ventilation
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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
The invention discloses a temperature rising and reducing system applied to an automatic gearbox and an operation method thereof, and the temperature rising and reducing system comprises a temperature control reversing valve, a gearbox cooler, a heat exchanger and pipelines thereof, wherein the temperature control reversing valve is provided with an inlet and two outlets, and the heat exchanger is provided with two groups of inlets and outlets which are respectively and correspondingly communicated; the inlet of the temperature control reversing valve is connected with the gearbox, the outlet of the temperature control reversing valve is connected with the inlet of a gearbox cooler, the outlet of the temperature control reversing valve is connected with the inlet of a heat exchanger, the outlet of the heat exchanger is connected with the gearbox, the inlet of the heat exchanger is also connected with the outlet of the gearbox cooler, and the inlet of the heat exchanger and the outlet of the heat exchanger are both connected with the engine. The problem of when the gearbox oil temperature was very low, lubricated effect was poor, after the oil temperature rose to a certain degree, the lubricated oil film destroyed, lost lubrication action, influenced the gearbox life-span is solved.
Description
Technical Field
The invention relates to the technical field of thermal management of a power assembly of a passenger vehicle, in particular to a temperature rising and reducing system applied to an automatic gearbox and an operation method thereof.
Background
The automatic gearbox consists of a hydraulic torque converter, a gear and a hydraulic control system, and achieves speed and torque changing through a combination mode of hydraulic transmission and the gear. To achieve a high quality gear torque converter, the temperature of the transmission oil is critical.
When the engine is cold started, the oil temperature of the gearbox is very low, the viscosity of the oil is too high, and the lubricating effect of the gearbox is very poor; with the operation of the automatic gearbox, certain power loss is converted into heat energy, so that the oil temperature of the gearbox is increased. If the oil temperature reaches a certain degree, the performance of lubricating oil can be changed, the viscosity is reduced, the aging deterioration is accelerated, the carbonization of certain components and the like can lose the lubricating effect under the action of load pressure if a lubricating oil film is damaged, so that the meshing tooth surface of a gear or the surface of a bearing is damaged, equipment faults are caused, and the service life of the gearbox is greatly influenced. Therefore, controlling the temperature of the transmission is a necessary condition to ensure a long-lasting and reliable operation of the transmission.
Disclosure of Invention
Technical problem to be solved
Based on the problems, the invention provides a temperature rising and reducing system applied to an automatic gearbox and an operation method thereof, so that the oil temperature of the gearbox is quickly raised and is not too high, and the reliability of the gearbox is improved.
(II) technical scheme
Based on the technical problem, the invention provides a temperature rising and reducing system applied to an automatic gearbox, which comprises a temperature control reversing valve, a gearbox cooler, a heat exchanger and pipelines thereof, wherein the temperature control reversing valve is provided with an inlet and two outlets, and the heat exchanger is provided with two groups of inlets and outlets which are respectively and correspondingly communicated; the inlet of the temperature control reversing valve is connected with the gearbox, the outlet of the temperature control reversing valve is connected with the inlet of a gearbox cooler, the outlet of the temperature control reversing valve is connected with the inlet of a heat exchanger, the outlet of the heat exchanger is connected with the gearbox, the inlet of the heat exchanger is also connected with the outlet of the gearbox cooler, and the inlet of the heat exchanger and the outlet of the heat exchanger are both connected with the engine.
Furthermore, when the temperature of the gearbox cooling liquid is lower than the set temperature II, the inlet of the temperature control reversing valve is communicated with the outlet II, and when the temperature of the gearbox cooling liquid is higher than the set temperature II, the inlet of the temperature control reversing valve is communicated with the outlet I.
Further, two flow-through circuits are included:
the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: engines, heat exchangers, engines;
the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, gearbox cooler, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: engine, heat exchanger, engine.
Preferably, the gearbox cooler is an air-cooled cooler, i.e. an oil air cooler, mounted in front of the engine compartment.
Preferably, the cooling liquid adopted by the engine is cooling water, the heat dissipation liquid adopted by the gearbox is heat dissipation oil, and the heat exchanger is an oil-water heat exchanger.
Preferably, when the temperature of the gearbox cooling liquid is lower than the set temperature, the temperature-controlled reversing valve is closed, and when the temperature of the gearbox cooling liquid is higher than the set temperature two, the temperature-controlled reversing valve is opened.
Preferably, the first set temperature is 70-78 ℃, and the second set temperature is 80-90 ℃.
An operation method of a heat dissipation system applied to an automatic gearbox and a matched engine thereof comprises the following steps:
s1, when the temperature of the gearbox cooling liquid is lower than the set temperature, the system enters the step S2; when the temperature of the gearbox cooling liquid is higher than the set temperature II, the system enters step S3;
s2, heating mode: the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: the engine cooling liquid assists the cooling liquid of the gearbox to heat;
s3, cooling mode: the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, gearbox cooler, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: the engine cooling liquid assists the cooling liquid of the gearbox to cool if the liquid temperature of the gearbox is higher than that of the engine; and if the engine liquid temperature is higher than the gearbox liquid temperature, the cooling liquid of the gearbox assists the cooling of the engine cooling liquid.
Further, the method further comprises:
when the temperature of the gearbox cooling fluid is higher than the first set temperature and lower than the second set temperature, the system keeps the original working mode until the temperature of the gearbox cooling fluid reaches the critical temperature of the other working mode.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
(1) when the temperature of the heat-dissipating liquid of the gearbox is higher, the heat-dissipating liquid of the gearbox is cooled by a gearbox cooler and then exchanges heat with the engine coolant in the heat exchanger, the heat-dissipating system of the gearbox and the engine heat-dissipating system are combined to exchange heat and mutually restrain, so that the overall heat-dissipating power of the power assembly is increased, the heat-dissipating speed is accelerated, the balance of the liquid temperature of the engine and the liquid temperature of the gearbox is also considered, the condition that one of the two temperatures is too high is avoided, and the gearbox is more durable and reliable;
(2) according to the invention, when the temperature of the cooling liquid of the gearbox is lower through the temperature control reversing valve, the cooling liquid does not flow through the gearbox cooler and exchanges heat with the engine cooling liquid in the heat exchanger, so that the temperature rise speed of the gearbox is higher, the reliability of the gearbox is better, the energy utilization rate is higher, and the consumption of the cooling liquid of the gearbox is relatively lower due to the higher temperature rise speed;
(3) the invention not only solves the heat dissipation of the automatic gearbox, but also solves the heat dissipation of the engine under the condition of insufficient heat dissipation power under the condition of high load, so that the liquid temperature of the gearbox and the liquid temperature of the engine can be kept within the allowable range, even the optimal temperature range;
(4) the heat exchanger directly exchanges heat between the gearbox cooling fluid and the engine cooling fluid, and compared with a method for transferring heat by a heat conducting part, the heat loss is less, and the energy utilization rate is higher.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a schematic structural diagram of a temperature raising and reducing system applied to an automatic transmission according to an embodiment of the present invention;
FIG. 2 is a flowchart of an operation method of a temperature raising and reducing system applied to an automatic transmission according to an embodiment of the present invention;
in the figure: 1: an engine; 2: a gearbox; 3: a temperature controlled reversing valve; 4: an oil air cooler; 5: an oil-water heat exchanger.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention discloses a temperature rising and reducing system applied to an automatic gearbox, which comprises a temperature control reversing valve 3, a gearbox cooler, a heat exchanger and pipelines thereof, wherein the temperature control reversing valve 3 is provided with an inlet and two outlets, the heat exchanger is provided with two groups of inlets and outlets which are respectively and correspondingly communicated, the inlet of the temperature control reversing valve 3 is connected with a gearbox 2, the outlet I of the temperature control reversing valve 3 is connected with the inlet of the gearbox cooler, the outlet II of the temperature control reversing valve 3 is connected with the inlet II of the heat exchanger, the outlet II of the heat exchanger is connected with the gearbox 2, the inlet II of the heat exchanger is also connected with the outlet of the gearbox cooler, and the inlet I and the outlet I of the heat exchanger are both connected with an engine. The temperature control reversing valve 3 controls the heat dissipation liquid of the gearbox to have two flow directions:
when the temperature of the gearbox cooling liquid is lower than the set temperature, the inlet and the outlet of the temperature control reversing valve 3 are communicated, and the flowing sequence of the gearbox cooling liquid is as follows: gearbox 2, temperature control reversing valve 3, heat exchanger, gearbox 2, simultaneously, the flow order of engine coolant liquid is: an engine 1, a heat exchanger, and an engine 1; the first set temperature is 70-78 ℃.
When the temperature of the gearbox cooling liquid is higher than the set temperature two, the inlet and the outlet of the temperature control reversing valve 3 are communicated, and the flow sequence of the gearbox cooling liquid is as follows: gearbox 2, temperature-sensing switching-over valve 3, gearbox cooler, heat exchanger, gearbox 2, simultaneously, the flow order of engine coolant liquid is: an engine 1, a heat exchanger, and an engine 1; the set temperature two is 80-90 ℃.
Further explained by a specific embodiment, the engine 1 is cooled by cooling water, and the gearbox 2 is cooled by cooling oil, so that the heat exchanger is an oil-water heat exchanger 5, two groups of correspondingly communicated inlets and outlets of the oil-water heat exchanger 5 are respectively a gearbox oil inlet and outlet, an engine cooling water inlet and outlet, and the engine cooling water and the gearbox cooling oil exchange heat in the part to achieve the effect that the outlet water temperature and the outlet oil temperature are basically the same;
the gearbox cooler adopts an air-cooled cooler, namely an oil air cooler 4, and is arranged in front of the engine cabin. The high-temperature gearbox oil and air exchange heat through the wind speed generated by the running of the vehicle, the higher the vehicle speed is, the better the cooling effect of the oil air cooler 4 is, the heat dissipation power of the oil air cooler 4 can be determined by tests of heat dissipation requirements of different vehicle types, and generally, the temperature of the gearbox oil after flowing through the oil air cooler 4 is about 50 ℃;
when the oil temperature of the gearbox is lower than the set temperature, the temperature control reversing valve 3 is closed, and an inlet of the temperature control reversing valve is communicated with a second outlet; when the oil temperature of the gearbox is higher than the set temperature II, the temperature control reversing valve 3 is opened, and an inlet of the temperature control reversing valve is communicated with the outlet I; the first set point temperature is typically 77 deg.C and the second set point temperature is typically 83.5 deg.C.
The specific operation method of the system is shown in fig. 2, and comprises the following steps:
s1, when the temperature of the gearbox radiating oil is lower than the set temperature of 77 ℃, the system enters the step S2; when the temperature of the radiating oil of the gearbox is higher than the set temperature of two 83.5 ℃, the system enters step S3;
s2, heating mode: the inlet and the outlet of the temperature control reversing valve 3 are communicated, and the flow sequence of the heat dissipation oil of the gearbox is as follows: gearbox 2, temperature control reversing valve 3, oil-water heat exchanger 5, gearbox 2, simultaneously, engine cooling water flows through in order: the engine 1, the oil-water heat exchanger 5 and the engine 1, wherein engine cooling water assists the temperature rise of the heat dissipation oil of the gearbox;
s3, cooling mode: the inlet and the outlet of the temperature control reversing valve 3 are communicated, and the flow sequence of the heat dissipation oil of the gearbox is as follows: gearbox 2, temperature-sensing switching-over valve 3, oily forced air cooler 4, oily-water heat exchanger 5, gearbox 2, simultaneously, the flow order of engine cooling water is: the engine 1, the oil-water heat exchanger 5 and the engine 1 comprise two states in a cooling mode:
if the oil temperature of the gearbox is higher than the water temperature of the engine, namely the gearbox 2 is under a severe heating working condition, the cooling water of the engine can be used for radiating the gearbox oil at the moment; if the water temperature of the engine is higher than the oil temperature of the gearbox, namely the engine 1 is under the working condition of serious heating, the cooling oil of the gearbox can cool the cooling water of the engine at the moment; namely, the engine 1 and the gearbox 2 cool each other.
If the temperature of the gearbox cooling oil is between the first set temperature and the second set temperature, the original mode of the system is kept until the oil temperature reaches the critical temperature of the other mode, when the temperature of the gearbox cooling oil is 70 ℃, the system enters the heating mode of step S2, the heating mode is kept after the oil temperature is heated to the first set temperature of 77 ℃, the heating is continued until the oil temperature is higher than the second set temperature of 83.5 ℃, and the cooling mode of step S3 is entered; and with the continuous work of the gearbox, the temperature of the radiating oil of the gearbox is 95 ℃, the system enters a step S3 temperature reduction mode, the temperature reduction mode is kept after the oil temperature is reduced to a set temperature of two 83.5 ℃, the temperature is continuously reduced until the oil temperature is lower than a set temperature of one 77 ℃, and the step S2 temperature increase mode is entered.
By combining the working condition of vehicle operation, when the vehicle is started in a cold state or in a low-temperature environment, the oil temperature of the gearbox and the water temperature of the engine are both low, the temperature control reversing valve 3 controls the heat dissipation oil of the gearbox not to flow through the oil air cooler 4 for cooling, the heat dissipation oil directly exchanges heat with the cooling water of the engine in the oil-water heat exchanger 5, the temperature of the heat dissipation oil and the cooling water of the engine is raised together, the working temperature can be reached as soon as possible, and the warm-.
When the vehicle runs normally, the optimal oil temperature of the gearbox works at about 90 ℃, the temperature-controlled reversing valve 3 controls the radiating oil of the gearbox to flow through the oil air cooler 4 firstly, and the radiating oil and the cooling water of the engine carry out heat exchange in the oil-water heat exchanger 5 after being cooled, so that the oil temperature and the water temperature are controlled at the optimal working temperature; the ideal temperature of the oil temperature of the gearbox is about 90 ℃, the engine cooling system is provided with an active cooling fan, the cooling power and the cooling effect are superior to the passive cooling of the gearbox, the cooling water temperature of the engine is kept between 85 ℃ and 90 ℃ and is coincided with the optimal oil temperature of the gearbox, and the heat exchanger is utilized to enable the gearbox 2 to control the oil temperature to be at the ideal level by virtue of the active cooling system of the engine 1.
When the vehicle is in an extremely hot environment or under a high-power limit working condition, the oil temperature of the gearbox and the water temperature of the engine are both increased, the temperature-controlled reversing valve 3 controls the radiating oil of the gearbox to flow through the oil air cooler 4 firstly, and the radiating oil and the cooling water of the engine exchange heat in the oil-water heat exchanger 5 after being cooled, so that the oil temperature and the water temperature are controlled not to be too high and are always lower than the alarm temperature, the alarm temperature is about 20-50 ℃ higher than the ideal temperature, and different engines and gearboxes can be set differently.
In summary, the heating and cooling system applied to the automatic transmission and the operation method thereof have the following advantages:
(1) when the temperature of the gearbox cooling oil is high, the gearbox cooling oil is cooled by the oil air cooler and then exchanges heat with engine cooling water in the oil-water heat exchanger, a gearbox cooling system and an engine cooling system are combined to exchange heat and are mutually restrained, the overall cooling power of a power assembly is increased, the cooling speed is accelerated, the balance of the engine water temperature and the gearbox oil temperature is also considered, the condition that one of the engine water temperature and the gearbox oil temperature is too high is avoided, and the transmission is more durable and reliable;
(2) according to the invention, when the temperature of the heat dissipating oil of the gearbox is lower through the temperature control reversing valve, the heat dissipating oil does not flow through the oil air cooler and exchanges heat with the engine cooling water in the oil-water heat exchanger, so that the gearbox has the advantages of higher temperature rising speed, better reliability of the gearbox, higher energy utilization rate and relatively lower oil consumption due to the higher temperature rising speed;
(3) the invention not only solves the heat dissipation of the automatic gearbox, but also solves the heat dissipation of the engine under the condition of insufficient heat dissipation power under the condition of high load, so that the oil temperature of the gearbox and the water temperature of the engine can be kept in the allowable range, even in the optimal temperature range;
(4) the heat-dissipating oil of the gearbox directly exchanges heat with the cooling water of the engine in the oil-water heat exchanger, and compared with a method for transferring heat by a heat-conducting component, the heat-dissipating oil of the gearbox has less heat loss and higher energy utilization rate;
(5) the gearbox cooler adopts an air-cooled cooler, is arranged in front of an engine compartment, and exchanges heat between high-temperature gearbox oil and air through the wind speed generated by vehicle running.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (9)
1. A temperature rising and reducing system applied to an automatic gearbox is characterized by comprising a temperature control reversing valve, a gearbox cooler, a heat exchanger and pipelines thereof, wherein the temperature control reversing valve is provided with an inlet and two outlets, and the heat exchanger is provided with two groups of inlets and outlets which are respectively and correspondingly communicated; the inlet of the temperature control reversing valve is connected with the gearbox, the outlet of the temperature control reversing valve is connected with the inlet of a gearbox cooler, the outlet of the temperature control reversing valve is connected with the inlet of a heat exchanger, the outlet of the heat exchanger is connected with the gearbox, the inlet of the heat exchanger is also connected with the outlet of the gearbox cooler, and the inlet of the heat exchanger and the outlet of the heat exchanger are both connected with the engine.
2. The system according to claim 1, wherein when the temperature of the transmission fluid is lower than the set temperature, the inlet of the thermostatic reversing valve is communicated with the second outlet, and when the temperature of the transmission fluid is higher than the set temperature, the inlet of the thermostatic reversing valve is communicated with the first outlet.
3. The system of claim 1, comprising two flow-through circuits:
the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: engines, heat exchangers, engines;
the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, gearbox cooler, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: engine, heat exchanger, engine.
4. A warming and cooling system for an automatic transmission as claimed in claim 1, wherein said transmission cooler is an air-cooled type cooler (oil air cooler) installed in front of the engine compartment.
5. The system according to claim 1, wherein the cooling fluid used by the engine is cooling water, the cooling fluid used by the transmission is cooling oil, and the heat exchanger is an oil-water heat exchanger.
6. The system according to claim 1, wherein the thermostatic reversing valve is closed when the temperature of the transmission cooling fluid is lower than a predetermined temperature, and the thermostatic reversing valve is opened when the temperature of the transmission cooling fluid is higher than a predetermined temperature.
7. The warming and cooling system for the automatic gearbox according to claim 2 or 6, wherein the first set temperature is 70-78 ℃ and the second set temperature is 80-90 ℃.
8. An operation method of the heat dissipation system applied to the automatic gearbox and the matched engine thereof according to any one of claims 1-7, characterized by comprising the following steps:
s1, when the temperature of the gearbox cooling liquid is lower than the set temperature, the system enters the step S2; when the temperature of the gearbox cooling liquid is higher than the set temperature II, the system enters step S3;
s2, heating mode: the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: the engine cooling liquid assists the cooling liquid of the gearbox to heat;
s3, cooling mode: the inlet and the outlet of the temperature control reversing valve are communicated, and the flowing sequence of the heat dissipation liquid of the gearbox is as follows: gearbox, control by temperature change switching-over valve, gearbox cooler, heat exchanger, gearbox, simultaneously, the flow order of engine coolant liquid is: the engine cooling liquid assists the cooling liquid of the gearbox to cool if the liquid temperature of the gearbox is higher than that of the engine; and if the engine liquid temperature is higher than the gearbox liquid temperature, the cooling liquid of the gearbox assists the cooling of the engine cooling liquid.
9. The method of claim 8, wherein the method further comprises:
when the temperature of the gearbox cooling fluid is higher than the first set temperature and lower than the second set temperature, the system keeps the original working mode until the temperature of the gearbox cooling fluid reaches the critical temperature of the other working mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911297863.9A CN110925402A (en) | 2019-12-17 | 2019-12-17 | Heating and cooling system applied to automatic gearbox and operation method thereof |
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| CN201911297863.9A CN110925402A (en) | 2019-12-17 | 2019-12-17 | Heating and cooling system applied to automatic gearbox and operation method thereof |
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| CN110925402A true CN110925402A (en) | 2020-03-27 |
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Cited By (1)
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| CN112196987A (en) * | 2020-10-30 | 2021-01-08 | 吉林大学 | Active air-cooling lubricating device for gearbox |
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2019
- 2019-12-17 CN CN201911297863.9A patent/CN110925402A/en active Pending
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| JPH11264318A (en) * | 1998-03-19 | 1999-09-28 | Calsonic Corp | Temperature adjusting device for transmission oil |
| US20090101312A1 (en) * | 2007-10-23 | 2009-04-23 | Gooden James T | Regulating Transmission Fluid and Engine Coolant Temperatures in a Motor Vehicle |
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