CN114810321A - Cooling liquid temperature control method and device of engine with TMM and vehicle - Google Patents
Cooling liquid temperature control method and device of engine with TMM and vehicle Download PDFInfo
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- CN114810321A CN114810321A CN202110742630.6A CN202110742630A CN114810321A CN 114810321 A CN114810321 A CN 114810321A CN 202110742630 A CN202110742630 A CN 202110742630A CN 114810321 A CN114810321 A CN 114810321A
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000000110 cooling liquid Substances 0.000 title abstract description 28
- 239000002826 coolant Substances 0.000 claims abstract description 58
- 230000008859 change Effects 0.000 claims abstract description 26
- 238000004590 computer program Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 11
- 210000000476 body water Anatomy 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001816 cooling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
- 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
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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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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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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Abstract
The embodiment of the application relates to the technical field of automobiles, in particular to a method and a device for controlling the temperature of cooling liquid of an engine with a TMM valve body and a vehicle. When an engine is cooled, periodically detecting a first temperature of engine coolant in a current period, subtracting the target temperature of the engine coolant in the current period from the first temperature of the engine coolant, determining a first temperature difference value in the current period, determining a target opening of a valve body in a Thermal Management Module (TMM) according to the first temperature difference value, then obtaining a second temperature difference value in a previous period, obtaining a comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value, judging a change trend of the temperature by combining the target temperature and the first temperature difference value of the current period, and compensating the target opening of the valve body, so that the adjustment of the temperature of the engine coolant is more accurate, and the optimal target coolant temperature is achieved.
Description
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to a method and a device for controlling the temperature of cooling liquid of an engine with a TMM (thermal management module) and a vehicle.
Background
The energy-saving and environment-friendly heat management system is energy-saving and environment-friendly, is not only a requirement for relieving the contradiction of fuel supply, reducing exhaust emission and improving the atmospheric environment, but also a requirement for harmonizing the automobile society in the future, and along with the tightening of the country on oil consumption and emission control, for example, the average fuel consumption of a new automobile is reduced to 4.0 liter/hundred kilometers in 2025, more and more technologies begin to be popularized, wherein a heat management module TMM of an engine is a technology which is arranged at a water outlet or a water return port of engine cooling liquid, the flow passing through the engine is different under different sectional areas, and the opening of a valve body in the TMM is adjusted according to the actual cooling liquid temperature to realize the adjustment of the circulation flow of the engine cooling liquid, the quick warming-up of the engine and the reduction of the emission; and the opening of the thermal management module can be adjusted according to the difference between the optimal oil consumption coolant temperature and the actual engine coolant temperature under the current engine operating condition after the engine is heated, so that the target coolant temperature is controlled.
In the prior art, the coolant returns to the engine to dissipate heat after being cooled by a circulation pipeline of the whole vehicle, the time of the whole process is long, hysteresis existing in the opening degree of the thermal management module is judged according to the difference value between the actual engine coolant temperature and the target coolant temperature, the actual engine coolant temperature exceeds an expected adjustment amount when being adjusted, the adjustment on the engine coolant temperature is inaccurate, and the optimal target coolant temperature cannot be achieved.
Content of application
The embodiment of the application aims to provide a cooling liquid temperature control method and device of an engine with a TMM (transient temperature management module) and a vehicle, and aims to solve the problem that the cooling liquid temperature of the engine cannot be accurately adjusted and the optimal target cooling liquid temperature cannot be achieved.
A first aspect of an embodiment of the present application provides a coolant temperature control method, where the control method includes:
acquiring a first temperature of engine coolant in a current period, and determining a first temperature difference value in the current period according to the first temperature and a target temperature of the engine coolant;
determining a target opening degree of a valve body in a Thermal Management Module (TMM) according to the first temperature difference value;
and compensating the target opening degree of the valve body according to the target temperature, the first temperature difference value, and the comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value.
Optionally, compensating the target opening degree of the valve body according to the target temperature, the first temperature difference, and a comparison temperature difference between a second temperature difference of a previous period adjacent to the current period and the first temperature difference, includes:
determining a compensation opening value for compensating the opening of the valve body according to the target temperature, the first temperature difference value, and a comparison temperature difference value between a second temperature difference value of a previous period adjacent to the current period and the first temperature difference value;
determining the actual opening degree of the valve body according to the target opening degree and the compensation opening degree value;
and controlling the valve body to operate according to the actual opening.
Optionally, determining a target opening degree of a valve body in the thermal management module TMM according to the first temperature difference value includes:
and substituting the first temperature difference value into a valve body opening value map to determine the target opening.
Optionally, determining a compensated opening value for compensating the opening of the valve body according to the target temperature, the first temperature difference value, and a comparison temperature difference value between a second temperature difference value of a previous period adjacent to the current period and the first temperature difference value, includes:
obtaining a comparison temperature difference value between a second temperature difference value of a previous period adjacent to the current period and the first temperature difference value, and determining a temperature difference value change rate according to the comparison temperature difference value;
determining a basic compensation opening value of the valve body according to the first temperature difference value and the target temperature;
and determining the compensation opening value according to the temperature difference value change rate and the basic compensation opening value.
Optionally, determining a base compensated opening value of the valve body according to the first temperature difference value and the target temperature includes:
and substituting the first temperature difference value and the target temperature into a valve body water temperature control effect map to determine the basic compensation opening value.
Optionally, determining the compensated opening value according to the temperature difference change rate and the basic compensated opening value includes:
and multiplying the temperature difference change rate by the basic compensation opening value to obtain the compensation opening value.
Optionally, determining the actual opening degree of the valve body according to the target opening degree and the compensated opening degree value includes:
and adding the target opening degree and the compensation opening degree value to obtain the actual opening degree value.
A second aspect of the embodiments of the present application provides a coolant temperature control apparatus, including:
the first temperature difference value acquisition module is used for acquiring a first temperature of engine cooling liquid in a current period and determining a first temperature difference value in the current period according to the first temperature and a target temperature of the engine cooling liquid;
the determining module is used for determining the target opening of the valve body in the thermal management module TMM according to the first temperature difference value;
and the compensation module is used for compensating the target opening of the valve body according to the target temperature, the first temperature difference value, the comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value.
A third aspect of the embodiments of the present application provides an electronic device, including:
a memory for storing a computer program;
a processor for executing the computer program stored on the memory to implement the control method described above.
A fourth aspect of the embodiments of the present application provides a vehicle including a control device configured to implement the control method described above.
Has the advantages that:
the application provides a method, a device and a vehicle for controlling the temperature of cooling liquid of an engine with a TMM (thermal management module), wherein when the engine is cooled, the first temperature of the cooling liquid of the engine in the current period is periodically detected, the first temperature of the cooling liquid of the engine in the current period is subtracted from the target temperature of the cooling liquid of the engine, the first temperature difference value in the current period is determined, the target opening degree of a valve body in the TMM is determined according to the first temperature difference value, the second temperature difference value in the previous period is obtained, the comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value is obtained, the change trend of the temperature is judged by combining the target temperature and the first temperature difference value of the current period, the target opening degree of the valve body is compensated, and therefore the temperature of the engine is more accurately adjusted, thereby achieving the optimal target cooling liquid temperature.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a control method according to an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating compensation of a target opening according to an embodiment of the present application;
FIG. 3 is a schematic flow chart illustrating a process for determining a compensated opening value according to an embodiment of the present application;
fig. 4 is a block diagram of a control device according to an embodiment of the present application;
fig. 5 is a block diagram of an electronic device according to an embodiment of the present application.
Description of reference numerals: 4. a detection device; 401. a first temperature difference value acquisition module; 402. a determination module; 403. and a compensation module.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The engine thermal management module TMM is a technology and is arranged at a water outlet or a water return port of engine coolant, the opening degree of a valve body in the TMM is adjusted according to actual coolant temperature according to different flow rates passing through different sectional areas, so that the circulation flow of the engine coolant can be adjusted, the engine can be quickly warmed up, and the emission is reduced; and the opening of the thermal management module can be adjusted according to the difference between the optimal oil consumption coolant temperature and the actual engine coolant temperature under the current engine operating condition after the engine is heated, so that the target coolant temperature is controlled.
In the related technology, the coolant passes through the engine connecting radiator through the circulating pipeline of the whole vehicle, and returns to the engine for heat dissipation after being cooled by the longer pipeline of the radiator, so that long time delay is provided, the problem that the ECT temperature performance has obvious control overshoot problem due to the fact that the opening degree of the thermal management module has the same hysteresis according to the difference value of the current actual engine coolant temperature and the target coolant temperature is solved, namely the actual temperature is too low when the target temperature is reduced, the temperature is too high when the target temperature is increased, the adjustment of the engine coolant temperature is inaccurate, and the optimal target coolant temperature cannot be achieved.
In view of the above, referring to fig. 1, a first aspect of the embodiments of the present application provides a coolant temperature control method, which is characterized by comprising:
s1, acquiring a first temperature of the engine coolant in the current period, and determining a first temperature difference value in the current period according to the first temperature and the target temperature of the engine coolant;
the target temperature of the engine coolant is the coolant temperature reaching the optimal oil consumption under the current engine operation condition, the laboratory obtains the coolant temperature map of the optimal oil consumption of the engine under different conditions according to experiments, and the target temperature of the engine is determined according to the working condition of the engine in the working process of the engine.
Meanwhile, in the embodiment, the current temperature of the engine coolant is acquired in real time through the coolant temperature sensor, and then the current temperature of the engine coolant in the current period is periodically determined as the first temperature according to the preset frequency.
The action of determining the target temperature is performed according to a cycle of a preset frequency, in this embodiment, the cycle frequency may be performed once every 10ms, and in other embodiments, the cycle frequency may also be 15ms or other frequencies.
The frequency of the cycles may be determined in accordance with the engine speed in some embodiments, such as one cycle of engine rotation; the period may also be determined in the flow rate of the coolant, not once when the coolant flows through the preset flow rate, etc.
S2, determining the target opening degree of the valve body in the thermal management module TMM according to the first temperature difference value;
the valve body of the thermal management module controls the opening of the valve body when the temperature of the cooling liquid is adjusted, so that the flow rate of the cooling liquid is controlled.
Because the distance from the position of the temperature sensor to the position of the engine is fixed, when different temperature differences are determined by a laboratory according to actual tests, the opening map of the valve body required for cooling the cooling liquid to the target temperature when the cooling liquid reaches the engine is obtained.
And after the first temperature difference value is obtained, substituting the first temperature difference value into the valve body opening map, thereby determining the target opening of the valve body.
And S3, compensating the target opening degree of the valve body according to the target temperature, the first temperature difference value, and the comparison temperature difference value between the second temperature difference value and the first temperature difference value of the previous period adjacent to the current period.
The physical change of the water temperature of the water channel and the control of the thermal management module are not a time level, the target opening of the valve body in the thermal management module TMM is determined according to the first temperature difference, then the second temperature difference in the previous period is obtained, the comparison temperature difference between the second temperature difference and the first temperature difference in the previous period adjacent to the current period is obtained, the change trend of the temperature is judged according to the lag change of the balance water temperature with good temperature change rate by combining the target temperature and the first temperature difference in the current period, and the convergence adjustment is carried out according to the temperature change trend and the target opening of the valve body.
When an engine is cooled, periodically detecting a first temperature of engine coolant in a current period, subtracting the target temperature of the engine coolant in the current period from the first temperature of the engine coolant, determining a first temperature difference value in the current period, determining a target opening of a valve body in a Thermal Management Module (TMM) according to the first temperature difference value, then obtaining a second temperature difference value in a previous period, obtaining a comparison temperature difference value between the second temperature difference value and the first temperature difference value of the previous period adjacent to the current period, judging a change trend of the temperature by combining the target temperature and the first temperature difference value of the current period, and compensating the target opening of the valve body, so that the temperature of the engine coolant is adjusted more accurately, and the optimal target coolant temperature is achieved.
Determining a target opening degree of a valve body in the thermal management module TMM according to the first temperature difference value comprises the following steps:
and substituting the first temperature difference value into a valve body opening value map to determine the target opening.
Because the distance from the position of the temperature sensor to the position of the engine is fixed, when different temperature difference values are determined by a laboratory according to actual tests, the opening map of the valve body required for cooling the cooling liquid to the target temperature when the cooling liquid reaches the engine.
And after the first temperature difference value is obtained, substituting the obtained first temperature difference value into the valve body opening map, and determining the target opening of the valve body according to the corresponding content of the first temperature difference value in the valve body opening map.
Referring to fig. 2, compensating the target opening degree of the valve body according to the target temperature, the first temperature difference value, and a comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value includes:
s31, determining a compensation opening value for compensating the opening of the valve body according to the target temperature, the first temperature difference value, and the comparison temperature difference value between the second temperature difference value and the first temperature difference value of the previous period adjacent to the current period;
and determining a map according to the water temperature control effect of the valve body through the first temperature difference and the target temperature to obtain a basic compensation opening value of the valve body. The valve body water temperature control effect map is calibrated and matched according to an actual temperature control effect obtained by a laboratory through dynamic working condition experiments, and a first temperature difference value and a corresponding relation map between a target temperature and the actual temperature control effect are obtained.
And determining the change trend and the convergence of the temperature according to the comparison temperature difference between the second temperature difference and the first temperature difference of the previous period adjacent to the current period. And determining the compensation opening degree value by combining the basic compensation opening degree value with the change trend of the temperature and the convergence quantity.
S32, determining the actual opening degree of the valve body according to the target opening degree and the compensation opening degree value;
and compensating the target opening according to the compensation opening value, and then cooling the cooling liquid by the opening after the valve body performs compensation, thereby obtaining the actual opening which is more accurate in adjusting the temperature of the engine cooling liquid.
And S33, controlling the valve body to operate according to the actual opening degree.
After the valve body obtains the actual opening degree, the internal valve is controlled to be opened to the actual opening degree, and therefore the required cooling effect is achieved.
Referring to fig. 3, determining a compensated opening value for compensating the opening of the valve body according to the target temperature, the first temperature difference value, and a comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value includes:
s311, obtaining a comparison temperature difference value between a second temperature difference value and a first temperature difference value of a previous period adjacent to the current period, and determining a temperature difference value change rate according to the comparison temperature difference value;
in one embodiment, the temperature difference value of the previous cycle is obtained as a second temperature difference value, the first temperature difference value and the second temperature difference value are subtracted to obtain a comparison temperature difference value, the numerical value of the comparison temperature difference value is used as the change rate of the temperature difference value, the number of the comparison temperature difference value is the convergence degree, and the positive and negative values are the directions for compensating the target opening degree of the valve body.
S312, determining a basic compensation opening value of the valve body according to the first temperature difference value and the target temperature;
in one embodiment, the base compensation opening value is determined by substituting the first temperature difference value and the target temperature into the valve body water temperature control effect map.
The distance from the position of the temperature sensor to the position of the engine is fixed, and when different temperature difference values are determined by a laboratory according to actual tests, the opening map of the valve body required for cooling the cooling liquid to the target temperature when the cooling liquid reaches the engine is obtained.
Therefore, the first temperature difference value and the target temperature are substituted into the valve body water temperature control effect map, and the basic compensation opening value is determined according to the content of the first temperature difference value and the target temperature corresponding to the valve body water temperature control effect map.
And S313, determining a compensation opening value according to the temperature difference change rate and the basic compensation opening value.
And multiplying the temperature difference change rate by the basic compensation opening value to obtain the compensation opening value.
In one embodiment, determining the actual opening of the valve body based on the target opening and the compensated opening value comprises:
and adding the target opening degree and the compensation opening degree value to obtain an actual opening degree value.
And after the compensation opening value is obtained by calculation according to the temperature difference change rate and the basic compensation opening value, correcting the target opening according to the compensation opening value, namely adding the target opening and the compensation opening value, so that the actual opening value of the valve body when the optimal oil consumption cooling liquid temperature under the current engine operation condition is reached can be obtained.
Based on the same inventive concept, referring to fig. 4, a second aspect of the embodiment of the present application provides a coolant temperature control apparatus, where the control apparatus 4 includes:
a first temperature difference obtaining module 401, configured to obtain a first temperature of the engine coolant in a current period, and determine a first temperature difference in the current period according to the first temperature and a target temperature of the engine coolant;
in this embodiment, the first temperature difference acquisition module includes a coolant temperature sensor ETC, and detects the engine coolant periodically at a preset frequency through the ETC, thereby acquiring the current temperature of the engine coolant.
A determining module 402, configured to determine a target opening degree of a valve body in the thermal management module TMM according to the first temperature difference;
in this embodiment, the determination module may be an electronic control unit ECU of the engine, and the ECU analyzes the first temperature difference and substitutes the first temperature difference into the coolant temperature map to obtain the target opening degree of the valve body.
The compensation module 403 compensates the target opening degree of the valve body according to the target temperature, the first temperature difference, and a comparison temperature difference between a second temperature difference of a previous period adjacent to the current period and the first temperature difference.
Wherein, the compensation module 403 is further configured to perform the following steps:
determining a compensation opening value for compensating the opening of the valve body according to the target temperature, the first temperature difference value, and a comparison temperature difference value between a second temperature difference value of a previous period adjacent to the current period and the first temperature difference value;
determining the actual opening degree of the valve body according to the target opening degree and the compensation opening degree value;
the control valve body operates according to the actual opening degree.
Wherein, the compensation module is further used for executing the following steps:
obtaining a comparison temperature difference value between a second temperature difference value and a first temperature difference value of a previous period adjacent to the current period 403, and determining a temperature difference value change rate according to the comparison temperature difference value;
determining a basic compensation opening value of the valve body according to the first temperature difference value and the target temperature;
and determining a compensation opening value according to the temperature difference value change rate and the basic compensation opening value.
Wherein the determining module 402 is further configured to perform the following steps:
and substituting the first temperature difference value and the target temperature into the valve body water temperature control effect map to determine a basic compensation opening value.
Wherein, the compensation module 403 is further configured to perform the following steps:
and multiplying the temperature difference change rate by the basic compensation opening value to obtain the compensation opening value.
And adding the target opening degree and the compensation opening degree value to obtain an actual opening degree value.
Based on the same inventive concept, referring to fig. 5, a third aspect of the embodiments of the present application provides an electronic device, including:
a memory for storing a computer program;
a processor for executing a computer program stored on the memory to implement the control method.
Based on the same inventive concept, a fourth aspect of embodiments of the present application provides a vehicle, including a control device configured to implement a control method.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Moreover, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions or neither should the relative importance be understood or implied. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.
The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the illustrative embodiments and applications will be apparent to those skilled in the art based upon this disclosure, it is not necessary or necessary to exhaustively enumerate all embodiments, and all obvious variations and modifications can be resorted to, falling within the scope of the disclosure.
Claims (10)
1. A coolant temperature control method, characterized by comprising:
acquiring a first temperature of engine coolant in a current period, and determining a first temperature difference value in the current period according to the first temperature and a target temperature of the engine coolant;
determining a target opening degree of a valve body in a Thermal Management Module (TMM) according to the first temperature difference value;
and compensating the target opening degree of the valve body according to the target temperature, the first temperature difference value, and the comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value.
2. The control method according to claim 1, wherein compensating for the target opening degree of the valve body based on the target temperature, the first temperature difference, and a comparison temperature difference between a second temperature difference of a previous cycle adjacent to a current cycle and the first temperature difference comprises:
determining a compensation opening value for compensating the opening of the valve body according to the target temperature, the first temperature difference value, and a comparison temperature difference value between a second temperature difference value of a previous period adjacent to the current period and the first temperature difference value;
determining the actual opening degree of the valve body according to the target opening degree and the compensation opening degree value;
and controlling the valve body to operate according to the actual opening.
3. A control method according to claim 1, characterized in that determining a target opening of a valve body in a thermal management module TMM based on said first temperature difference comprises:
and substituting the first temperature difference value into a valve body opening value map to determine the target opening.
4. The control method according to claim 2, wherein determining a compensated opening degree value for compensating the opening degree of the valve body based on the target temperature, the first temperature difference value, and a comparison temperature difference value between a second temperature difference value of a previous cycle adjacent to a current cycle and the first temperature difference value comprises:
obtaining a comparison temperature difference value between a second temperature difference value of a previous period adjacent to the current period and the first temperature difference value, and determining a temperature difference value change rate according to the comparison temperature difference value;
determining a basic compensation opening value of the valve body according to the first temperature difference value and the target temperature;
and determining the compensation opening value according to the temperature difference value change rate and the basic compensation opening value.
5. A control method in accordance with claim 4 wherein determining a base compensated opening value for the valve body based on the first temperature difference and the target temperature comprises:
and substituting the first temperature difference value and the target temperature into a valve body water temperature control effect map to determine the basic compensation opening value.
6. The control method of claim 4, wherein determining the compensated opening value based on the rate of change of the temperature difference and the base compensated opening value comprises:
and multiplying the temperature difference change rate by the basic compensation opening value to obtain the compensation opening value.
7. A control method according to claim 2, wherein determining an actual opening degree of the valve body based on the target opening degree and the compensated opening degree value comprises:
and adding the target opening degree and the compensation opening degree value to obtain the actual opening degree value.
8. A coolant temperature control apparatus, characterized in that the control apparatus (4) includes:
the temperature control device comprises a first temperature difference value acquisition module (401) for acquiring a first temperature of engine coolant in a current period and determining a first temperature difference value in the current period according to the first temperature and a target temperature of the engine coolant;
a determining module (402) for determining a target opening degree of a valve body in a Thermal Management Module (TMM) according to the first temperature difference value;
and the compensation module (403) is used for compensating the target opening degree of the valve body according to the target temperature, the first temperature difference value, and the comparison temperature difference value between the second temperature difference value of the previous period adjacent to the current period and the first temperature difference value.
9. An electronic device, comprising:
a memory for storing a computer program;
a processor for executing a computer program stored on the memory to implement the control method of any one of claims 1-7.
10. A vehicle characterized by comprising a control device for implementing the control method of any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110742630.6A CN114810321A (en) | 2021-06-30 | 2021-06-30 | Cooling liquid temperature control method and device of engine with TMM and vehicle |
| PCT/CN2022/097422 WO2023273812A1 (en) | 2021-06-30 | 2022-06-07 | Coolant temperature control method and device for engine having tmm, and vehicle |
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| CN202110742630.6A CN114810321A (en) | 2021-06-30 | 2021-06-30 | Cooling liquid temperature control method and device of engine with TMM and vehicle |
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| CN114810321A true CN114810321A (en) | 2022-07-29 |
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| WO2023273812A1 (en) | 2023-01-05 |
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