CN116464545A - Electronic thermostat control method, system, device and engine control system - Google Patents
Electronic thermostat control method, system, device and engine control system Download PDFInfo
- Publication number
- CN116464545A CN116464545A CN202310618253.4A CN202310618253A CN116464545A CN 116464545 A CN116464545 A CN 116464545A CN 202310618253 A CN202310618253 A CN 202310618253A CN 116464545 A CN116464545 A CN 116464545A
- Authority
- CN
- China
- Prior art keywords
- water temperature
- engine
- value
- set value
- temperature set
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 319
- 239000000498 cooling water Substances 0.000 claims abstract description 75
- 239000010705 motor oil Substances 0.000 claims abstract description 56
- 238000012937 correction Methods 0.000 claims description 105
- 230000015654 memory Effects 0.000 claims description 27
- 239000003921 oil Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 description 16
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 101100456045 Schizosaccharomyces pombe (strain 972 / ATCC 24843) map3 gene Proteins 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 101000979001 Homo sapiens Methionine aminopeptidase 2 Proteins 0.000 description 1
- 101000969087 Homo sapiens Microtubule-associated protein 2 Proteins 0.000 description 1
- 101000969594 Homo sapiens Modulator of apoptosis 1 Proteins 0.000 description 1
- 101150064138 MAP1 gene Proteins 0.000 description 1
- 102100021118 Microtubule-associated protein 2 Human genes 0.000 description 1
- 102100021440 Modulator of apoptosis 1 Human genes 0.000 description 1
- 101100131116 Oryza sativa subsp. japonica MPK3 gene Proteins 0.000 description 1
- 101100075995 Schizosaccharomyces pombe (strain 972 / ATCC 24843) fma2 gene Proteins 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- 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
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the technical field of automobile electronic control, and discloses a method, a system and a device for controlling an electronic thermostat and an engine control system, wherein the method comprises the following steps: determining a first water temperature set point by searching a first cooling water temperature setting table based on the received data of the engine speed and the engine load; correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value; and controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value. After the first water temperature set value is determined based on the engine speed and the engine load, the environment pressure, the environment temperature and the engine oil temperature are comprehensively considered, the target water temperature set value is calculated in real time, the working state of the electronic thermostat is controlled in real time, point-by-point control is realized, and accurate control of fuel economy is realized.
Description
Technical Field
The invention relates to the technical field of automobile electronic control, in particular to a method, a system and a device for controlling an electronic thermostat and an engine control system.
Background
As global petroleum prices continue to rise, the current automotive engine fuel consumption performance is increasingly focused by end users, and fuel consumption indexes become the core competitiveness of products, and various large main factories are continuously innovating energy-saving technologies. The reasonable control of the cooling water temperature of the engine has good benefits for energy conservation, so the electric control type thermostat is also a trend in the future.
The related method for controlling the temperature of the cooling water obtains the preset water temperature of the electronic thermostat by collecting the actual water temperature and the engine rotating speed, and adjusts the actual opening value of the electronic thermostat according to the preset water temperature so as to keep the actual water temperature at the preset water temperature, but the prior art only considers the engine rotating speed to obtain the preset water temperature, so that the electronic thermostat is controlled, influences are not comprehensive, and the electronic thermostat cannot be accurately controlled.
Disclosure of Invention
In view of the above, the invention provides a method, a system, a device and an engine control system for controlling an electronic thermostat, which are used for solving the problems that the factors considered in calculating the preset water temperature are incomplete and the accurate control of the electronic thermostat cannot be realized.
In a first aspect, the present invention provides a method for controlling an electronic thermostat, the method comprising: determining a first water temperature set point by searching a first cooling water temperature setting table based on the received data of the engine speed and the engine load; correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value; and controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
After the first water temperature set value is determined based on the engine speed and the engine load, the first water temperature set value is corrected by taking the corresponding environmental pressure, environmental temperature and engine oil temperature of the engine into consideration, the more accurate target water temperature set value can be obtained by taking the complexity of the running scene of the engine into consideration, the electronic thermostat is controlled more accurately based on the target water temperature set value, the target water temperature set value is calculated in real time, the working state of the electronic thermostat is controlled in real time, point-by-point control is realized, and the accurate control of the fuel economy is realized.
In an alternative embodiment, the modification of the first water temperature set point based on the received ambient pressure, ambient temperature and oil temperature for the engine includes: determining a correction value based on data of an ambient pressure, an ambient temperature and an engine oil temperature corresponding to the engine; and adding the correction value with the first water temperature set value to obtain a target water temperature set value.
After the first water temperature set value is obtained, the data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine are considered, the correction value is determined, the determined correction value and the first water temperature set value are added to obtain the target water temperature set value, the calculation error of the first water temperature set value can be reduced, and the working state of the electronic thermostat can be controlled more accurately based on the obtained target water temperature set value.
In an alternative embodiment, determining the correction value based on the corresponding ambient pressure, ambient temperature, and oil temperature of the engine includes: based on the received data of the engine speed and the engine load, determining a first water temperature value, a second water temperature value and a third water temperature value by respectively searching a second cooling water temperature setting table corresponding to the ambient pressure, a third cooling water temperature setting table corresponding to the ambient temperature and a fourth cooling water temperature setting table corresponding to the engine oil temperature; based on received data of the corresponding ambient pressure, ambient temperature and engine oil temperature of the engine, respectively determining a corresponding ambient pressure correction coefficient, an ambient temperature correction coefficient and an engine oil temperature correction coefficient; multiplying the first water temperature value by an ambient pressure correction coefficient to obtain a first correction value; multiplying the second water temperature value by the ambient temperature correction coefficient to obtain a second correction value; multiplying the third water temperature value by the engine oil temperature correction coefficient to obtain a third correction value; and adding the first correction value, the second correction value and the third correction value to obtain the correction value.
The correction value is calculated by taking the influence of the ambient temperature on the cooling water heat dissipation of the engine, the exchange of engine oil and water and the influence of the altitude on a cooling water heat dissipation system into consideration, and the correction value can be obtained truly and accurately by using a correction coefficient curve and a corresponding water temperature value, so that an accurate target water temperature set value can be obtained.
In an alternative embodiment, after obtaining the target water temperature set point, the electronic thermostat control method further includes: searching an engine water temperature limit value table based on the received data of the engine speed and the engine load to obtain a first water temperature limit value; correcting the first water temperature limit value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a second water temperature limit value; and comparing the target water temperature set value with a second water temperature limit value, and taking the second water temperature limit value as the target water temperature set value if the second water temperature set value is larger than the second water temperature limit value.
The first water temperature limit value is determined based on the engine speed and the engine load through the known engine water temperature limit value table, the first water temperature limit value is corrected based on the ambient pressure, the ambient temperature and the engine oil temperature to obtain a second water temperature limit value corresponding to the engine, when the calculated target water temperature set value is larger than the second water temperature limit value, the second water temperature limit value is selected as the target water temperature set value, the engine can be ensured to run in a normal environment, the engine is prevented from being failed due to the fact that the water temperature of engine cooling water is large, and the effect of protecting the engine is achieved.
In an alternative embodiment, the electronic thermostat control method further includes: monitoring an actual water temperature value of the engine cooling water; judging whether the difference value between the actual water temperature value of the engine cooling water and the target water temperature set value is larger than a preset threshold value or not; when the difference value between the actual water temperature value of the engine cooling water and the target water temperature set value is larger than a preset threshold value in a preset time period, setting the target water temperature set value to be a preset minimum water temperature value, and reducing the rotating speed of the engine.
In an alternative embodiment, the electronic thermostat control method further includes: comparing the received working operation data information fed back by the electronic thermostat with a preset normal working range; if the working operation data information is not in the preset normal working range, setting the target water temperature set value to a preset minimum water temperature value, and reducing the rotating speed of the engine.
By monitoring whether software and hardware facilities have faults or not in real time, setting a target water temperature set value to a preset minimum water temperature value after the faults occur, reducing the rotating speed of an engine, considering the processing mode under a fault failure mode, and ensuring the safety of the whole system in the running process.
In a second aspect, the present invention provides an electronic thermostat control system, the system comprising: an electronic thermostat; the data acquisition unit is used for acquiring data of the rotating speed of the engine, the load of the engine, the corresponding ambient pressure of the engine, the ambient temperature and the engine oil temperature; and the electronic control unit is in communication connection with the electronic thermostat and the data acquisition unit, and is used for determining a first water temperature set value by searching a first cooling water temperature setting table based on the received data of the engine rotating speed and the engine load, correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value, and controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
In a third aspect, the present invention provides an electronic thermostat control device, the device comprising: the first water temperature set value determining module is used for determining a first water temperature set value by searching a first cooling water temperature setting table based on the received data of the engine rotating speed and the engine load; the target water temperature set value determining module is used for correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value; and the electronic thermostat control module is used for controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
In a fourth aspect, the present invention provides an engine control system comprising: an engine; an electronic thermostat disposed on the engine; a controller, the controller comprising: the electronic thermostat control device comprises a memory and a processor, wherein the memory and the processor are in communication connection, the memory stores computer instructions, and the processor executes the computer instructions, so that the electronic thermostat control method according to the first aspect or any corresponding embodiment of the first aspect is executed.
In a fifth aspect, the present invention provides a computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the electronic thermostat control method of the first aspect or any one of its corresponding embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of controlling an electronic thermostat according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electronic thermostat control system in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural view of an electronic thermostat control device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a hardware structure of a computer device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As global petroleum prices continue to rise, the current automotive engine fuel consumption performance is increasingly focused by end users, and fuel consumption indexes become the core competitiveness of products, and various large main factories are continuously innovating energy-saving technologies. The reasonable control of the temperature of the cooling water of the engine has good benefits for energy conservation.
According to the related method for controlling the temperature of the cooling water, the electronic control unit obtains the preset water temperature of the electronic thermostat by collecting the actual water temperature and the engine rotating speed, and adjusts the actual opening value of the electronic thermostat according to the preset water temperature so that the actual water temperature is kept at the preset water temperature, but the prior art only considers the engine rotating speed to obtain the preset water temperature, so that the electronic thermostat is controlled, influences are not comprehensive, and accurate control of the electronic thermostat cannot be realized.
The embodiment of the invention provides a control method, a system, a device, equipment and a storage medium of an electronic thermostat, which are used for correcting a first water temperature set value by considering the corresponding environmental pressure, environmental temperature and engine oil temperature of an engine after determining the first water temperature set value based on the rotating speed of the engine and the load of the engine, obtaining a more accurate target water temperature set value by considering the complexity of the running scene of the engine, controlling the electronic thermostat more accurately based on the target water temperature set value, calculating the target water temperature set value in real time and controlling the working state of the electronic thermostat in real time, realizing point-by-point control and realizing accurate control of fuel economy.
In accordance with an embodiment of the present invention, an electronic thermostat control method embodiment is provided, it being noted that the steps shown in the flow chart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is shown in the flow chart, in some cases, the steps shown or described may be performed in a different order than that shown.
In this embodiment, an electronic thermostat control method is provided, which may be used in the above mobile terminal, such as a mobile phone, a tablet pc, etc., fig. 1 is a flowchart of the electronic thermostat control method according to an embodiment of the present invention, and as shown in fig. 1, the flowchart includes the following steps:
step S101, based on the received data of the engine speed and the engine load, determining a first water temperature setting value by looking up a first cooling water temperature setting table.
According to the embodiment of the application, the engine speed sensor can be used for collecting the data of the engine speed in real time and the engine load sensor can be used for collecting the data of the engine load in real time, the data can be processed in real time after being collected, the data are subjected to data cleaning, abnormal value processing and abnormal data filtering, and the like, the cooling water temperature setting table can be used for directly obtaining the cooling water temperature setting table known in the art by way of example only, and a special cooling water temperature setting table in the scheme can also be obtained by a person in the art through multiple experiments without limitation, wherein the transverse axis of the cooling water temperature setting table is the engine speed, the longitudinal axis of the cooling water temperature setting table is the engine load, and the collected and processed data of the engine speed and the load are searched for a corresponding first water temperature set value through the cooling water temperature setting table.
Step S102, the first water temperature set value is corrected based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine, and the target water temperature set value is obtained.
The data of the ambient pressure, the ambient temperature and the engine oil temperature corresponding to the engine in the embodiment of the application can be acquired in real time through the ambient pressure sensor, the ambient temperature sensor and the engine oil temperature sensor respectively, after the first water temperature set value is obtained, the first water temperature set value is corrected in real time by considering the ambient pressure, the ambient temperature and the engine oil temperature, and the method is not limited, and only used as an example, the method for correcting the first water temperature limit value can be used as an example, for example, after the first water temperature set value is obtained, the first water temperature set value is obtained by multiplying the first water temperature set value by the correction coefficient corresponding to the ambient pressure, and after the first water temperature set value is obtained by multiplying the correction coefficient corresponding to the ambient temperature, the second water temperature set value is obtained by sequentially, and finally the target water temperature set value is obtained.
Step S103, controlling the operating state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
According to the electronic thermostat, when the temperature of engine cooling water is low, the electronic thermostat is in a closed state, engine cooling water is subjected to small circulation, so that the temperature of the engine cooling water is rapidly increased, when the temperature of the engine cooling water is high, the electronic thermostat is in an open state, engine cooling water is subjected to large circulation, the temperature of the engine cooling water is kept at a normal working temperature, after a target water temperature set value is obtained, the electronic control unit sends a control instruction to the electronic thermostat through sending a PWM control signal of the electronic thermostat according to the target water temperature set value, and the electronic thermostat realizes a heating function through electromagnetic valve duty ratio driving, so that the water temperature of the engine cooling water is flexibly controlled.
According to the electronic thermostat control method, after the first water temperature set value is determined based on the engine speed and the engine load, the first water temperature set value is corrected by taking the corresponding ambient pressure, ambient temperature and engine oil temperature of the engine into consideration, the complexity of the running scene of the engine is considered, a more accurate target water temperature set value can be obtained, the electronic thermostat is controlled more accurately based on the target water temperature set value, the target water temperature set value is calculated in real time, the working state of the electronic thermostat is controlled in real time, point-by-point control is realized, and the accurate control of fuel economy is realized.
In some alternative embodiments, the step S102 includes:
and a step a1, determining a correction value based on data of the corresponding ambient pressure, the corresponding ambient temperature and the corresponding engine oil temperature.
As a specific embodiment of the present invention, the step a1 includes:
step b1, based on the received data of the engine speed and the engine load, determining a first water temperature value, a second water temperature value and a third water temperature value by respectively searching a second cooling water temperature setting table corresponding to the ambient pressure, a third cooling water temperature setting table corresponding to the ambient temperature and a fourth cooling water temperature setting table corresponding to the engine oil temperature;
step b2, respectively determining corresponding environmental pressure correction coefficients, environmental temperature correction coefficients and engine oil temperature correction coefficients based on received data of the environmental pressure, the environmental temperature and the engine oil temperature corresponding to the engine;
step b3, multiplying the first water temperature value by the ambient pressure correction coefficient to obtain a first correction value;
step b4, multiplying the second water temperature value by the ambient temperature correction coefficient to obtain a second correction value;
step b5, multiplying the third water temperature value by the engine oil temperature correction coefficient to obtain a third correction value;
and b6, adding the first correction value, the second correction value and the third correction value to obtain the correction value.
In this embodiment, the second cooling water temperature setting table, the third water temperature setting table and the fourth cooling water temperature table may directly obtain corresponding cooling water temperature setting tables known in the art, or may be obtained by a worker in the art through multiple experiments, without limitation, where the horizontal axes of the second cooling water temperature setting table, the third water temperature setting table and the fourth cooling water temperature table are engine speeds, the vertical axes are engine loads, the corresponding cooling water temperature setting tables are searched based on data of the engine speeds and the engine loads received in real time, corresponding first water temperature values, second water temperature values and third water temperature values may be obtained, corresponding correction index curves may be searched to obtain corresponding correction coefficients, the first water temperature values and the ambient pressure correction coefficients may be multiplied to obtain first correction values, the second water temperature values and the ambient temperature correction coefficients may be multiplied to obtain second correction values, and the third water temperature values and the engine oil temperature correction coefficients may be multiplied to obtain third correction values, where:
t1_ambient temperature=map1×facp1
T2_ambient pressure=map2×facp2
T3_engine oil temperature=map3×facp3
Wherein t1_ambient temperature represents the second correction value; MAP1 represents a second water temperature value; facP1 represents an ambient temperature correction coefficient; t2_ambient pressure represents a first correction value; MAP2 represents a first water temperature value; facP2 represents an ambient pressure correction coefficient; t3—engine oil temperature represents a third correction value; MAP3 represents a third water temperature value; facP3 represents an engine oil temperature correction coefficient;
calculating a correction value by:
delta T correction value = t1_ambient pressure + t2_ambient temperature + t3_oil temperature
Wherein Δt correction value represents correction value.
The correction value is calculated by taking the influence of the ambient temperature on the cooling water heat dissipation of the engine, the exchange of engine oil and water and the influence of the altitude on a cooling water heat dissipation system into consideration, and the correction value can be obtained truly and accurately by using a correction coefficient curve and a corresponding water temperature value, so that an accurate target water temperature set value can be obtained.
And a2, adding the correction value with the first water temperature set value to obtain a target water temperature set value.
The embodiment of the application can calculate the target water temperature set value by the following formula:
target t_water temperature=t_base+Δt correction value
Wherein the target T_water temperature represents a target water temperature set value; t_base represents a first water temperature set point; the Δt correction value represents a correction value obtained based on data of the ambient pressure, the ambient temperature, and the oil temperature corresponding to the engine.
After the first water temperature set value is obtained, the data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine are considered, the correction value is determined, the determined correction value and the first water temperature set value are added to obtain the target water temperature set value, the calculation error of the first water temperature set value can be reduced, and the working state of the electronic thermostat can be controlled more accurately based on the obtained target water temperature set value.
In some optional embodiments, after obtaining the target water temperature set value, the method for controlling an electronic thermostat provided in the embodiment of the present invention further includes:
step c1, searching an engine water temperature limit value table based on received data of the engine speed and the engine load to obtain a first water temperature limit value;
step c2, correcting the first water temperature limit value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a second water temperature limit value;
and c3, comparing the target water temperature set value with a second water temperature limit value, and taking the second water temperature limit value as the target water temperature set value if the second water temperature set value is larger than the second water temperature limit value.
In this embodiment of the present application, the engine water temperature limit table may also be a water temperature limit table known in the art, or may be obtained by multiple experiments performed on a copper drum by a worker in the art, where the engine water temperature limit table may be a suitable water temperature limit table selected according to actual needs, and in this embodiment, a maximum engine water temperature limit table is selected to obtain a maximum first water temperature limit, and the engine water temperature limit table is searched according to the engine speed and the engine load received in real time, so as to obtain the first water temperature limit, and the first water temperature limit is corrected by considering the data of the environmental temperature, the environmental pressure and the engine oil temperature received in real time, where a specific correction processing method may be according to the method mentioned in the above embodiment, and not described here any more, where the second water temperature limit is calculated by the following formula:
t_max limit=t_base limit+Δt limit correction value
Wherein t_max represents the second water temperature limit; the t_base limit represents a first water temperature limit; the Δt limit correction value represents a correction value calculated in consideration of the ambient temperature, the ambient pressure, and the oil temperature.
And comparing the target water temperature set value with the second water temperature limit value, when the second water temperature set value is smaller than or equal to the second water temperature limit value, keeping the target water temperature set value as the original water temperature set value, and when the second water temperature set value is larger than the second water temperature limit value, updating the target water temperature set value as the second water temperature limit value, and further limiting the speed and the torque of the engine to prevent the engine from overlarge thermal load.
The first water temperature limit value is determined based on the engine speed and the engine load through the known engine water temperature limit value table, the first water temperature limit value is corrected based on the ambient pressure, the ambient temperature and the engine oil temperature to obtain a second water temperature limit value corresponding to the engine, when the calculated target water temperature set value is larger than the second water temperature limit value, the second water temperature limit value is selected as the target water temperature set value, the engine can be ensured to run in a normal environment, the engine is prevented from being failed due to the fact that the water temperature of engine cooling water is large, and the effect of protecting the engine is achieved.
In some optional implementations, the electronic thermostat control method provided by the embodiment of the present invention further includes:
step d1, monitoring an actual water temperature value of engine cooling water;
step d2, judging whether the difference value between the actual water temperature value of the engine cooling water and the target water temperature set value is larger than a preset threshold value;
and d3, when the difference value between the actual water temperature value of the cooling water of the engine and the target water temperature set value is larger than a preset threshold value in a preset time period, setting the target water temperature set value to a preset minimum water temperature value, and reducing the rotating speed of the engine.
According to the embodiment of the application, the electronic control unit monitors the actual water temperature of the engine cooling water in real time, calculates the difference value between the actual water temperature value of the engine cooling water and the target water temperature setting, judges whether the calculated difference value is larger than a preset threshold value, the preset threshold value can be automatically determined according to actual requirements, the difference value calculated in a period of time is monitored to be continuously larger than the preset threshold value, the setting of the period of time can also be automatically determined according to the actual requirements, such as 1 minute, only by way of example, the software failure fault is shown, the electronic control unit can acquire the sensor failure state logic of the actual water temperature value, such as the failure of the electronic thermostat, etc., the electronic control unit can diagnose the failure logic of the electronic thermostat, such as the electronic control unit fails to control the water pump, limit torque is started, or the control deviation is excessively large for a long time, such as the output control water temperature is maximum/is larger, the electronic control loop is turned on, the electronic control unit can terminate the calculation of the target water temperature setting value, the target water temperature setting is firstly set to be the preset minimum water temperature value, the minimum water temperature value is automatically determined according to human, the engine failure is not limited, the engine failure is prevented, and the engine failure is protected, and the engine is empirically controlled.
In some optional implementations, the electronic thermostat control method provided by the embodiment of the invention further includes:
step e1, comparing the working operation data information fed back by the electronic thermostat with a preset normal working range;
and e2, if the working operation data information is not in the preset normal working range, setting the target water temperature set value to a preset minimum water temperature value, and reducing the rotating speed of the engine.
In the embodiment of the application, when the electronic control unit controls the working state of the electronic thermostat, the electronic thermostat also feeds back working operation data to the electronic control unit in real time to judge whether faults occur, wherein the working operation data can be working voltage, current and the like, and the electronic control unit compares the fed back working operation data with a preset normal working range by way of example only, wherein the normal working range can also be determined according to human experience, when the working operation data is detected not to be in the preset normal working range, hardware failure logic is judged to occur, the electronic thermostat comprises the faults of the electronic thermostat body, such as the inherent water temperature opening characteristic of the electronic thermostat body, the electronic thermostat body can work independently, or the electronic control unit controls the faults, such as circuit break, short circuit, stitch corrosion and the like, and the electronic control unit can terminate calculating a target water temperature set value by way of example only, and set the target water temperature set value is set to a preset minimum water temperature value firstly, wherein the minimum water temperature value can be determined by self according to human experience, does not limit speed and torque control on an engine, and the engine is protected.
By monitoring whether software and hardware facilities have faults or not in real time, setting a target water temperature set value to a preset minimum water temperature value after the faults occur, reducing the rotating speed of an engine, considering the processing mode under a fault failure mode, and ensuring the safety of the whole system in the running process.
There is also provided in this embodiment an electronic thermostat control system, as in fig. 2, comprising:
an electronic thermostat 22;
a data acquisition unit 23, configured to acquire data of an engine speed, an engine load, an ambient pressure corresponding to the engine, an ambient temperature, and an engine oil temperature;
the electronic control unit 21 is in communication connection with the electronic thermostat and the data acquisition unit, and is used for determining a first water temperature set value by searching a first cooling water temperature set table based on received data of the engine speed and the engine load, correcting the first water temperature set value based on received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value, and controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value;
and the data acquisition unit is used for acquiring data of the rotating speed of the engine, the load of the engine, the corresponding ambient pressure of the engine, the ambient temperature and the engine oil temperature.
The specific description refers to the above embodiments, and will not be repeated here.
The embodiment also provides an electronic thermostat control device, which is used for implementing the above embodiment and the preferred implementation, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
The present embodiment provides an electronic thermostat control device, as shown in fig. 3, including:
the first water temperature setting value determining module 201 is configured to determine a first water temperature setting value by looking up a first cooling water temperature setting table based on the received data of the engine speed and the engine load.
The target water temperature set value determining module 202 is configured to correct the first water temperature set value based on the received data of the environmental pressure, the environmental temperature and the engine oil temperature corresponding to the engine, so as to obtain the target water temperature set value.
The electronic thermostat control module 203 is configured to control an operating state of the electronic thermostat based on the target water temperature set value such that an actual water temperature value of the engine cooling water reaches the target water temperature set value.
In some alternative embodiments, the target water temperature set point determination module 202 includes:
and the correction value determining unit is used for determining the correction value based on the data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine.
And the data processing unit is used for adding the correction value with the first water temperature set value to obtain a target water temperature set value.
In some alternative embodiments, the correction value determining unit includes:
the water temperature value determining subunit is used for determining a first water temperature value, a second water temperature value and a third water temperature value by respectively searching a second cooling water temperature setting table corresponding to the ambient pressure, a third cooling water temperature setting table corresponding to the ambient temperature and a fourth cooling water temperature setting table corresponding to the engine oil temperature based on the received data of the engine speed and the engine load.
And the correction coefficient determining subunit is used for respectively determining the corresponding environmental pressure correction coefficient, the corresponding environmental temperature correction coefficient and the corresponding engine oil temperature correction coefficient based on the received data of the corresponding environmental pressure, the corresponding environmental temperature and the corresponding engine oil temperature of the engine.
And the first correction value determining subunit is used for multiplying the first water temperature value and the ambient pressure correction coefficient to obtain a first correction value.
And the second correction value determining subunit is used for multiplying the second water temperature value by the ambient temperature correction coefficient to obtain a second correction value.
And the third correction value determining subunit is used for multiplying the third water temperature value by the engine oil temperature correction coefficient to obtain a third correction value.
And the data processing subunit is used for adding the first correction value, the second correction value and the third correction value to obtain the correction value.
In some alternative embodiments, the apparatus further comprises:
the first water temperature limit value determining module is used for searching an engine water temperature limit value table based on the received data of the engine speed and the engine load to obtain a first water temperature limit value;
the second water temperature limit value determining module is used for correcting the first water temperature limit value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a second water temperature limit value;
and the target water temperature set value second determining module is used for comparing the target water temperature set value with a second water temperature limit value, and taking the second water temperature limit value as the target water temperature set value if the second water temperature set value is larger than the second water temperature limit value.
In some alternative embodiments, the apparatus further comprises:
the water temperature detection module is used for monitoring the actual water temperature value of the cooling water of the engine;
the threshold judging module is used for judging whether the difference value between the actual water temperature value of the engine cooling water and the target water temperature set value is larger than a preset threshold value or not;
and the data setting module is used for setting the target water temperature set value to a preset minimum water temperature value and reducing the rotating speed of the engine when the difference value between the actual water temperature value of the cooling water of the engine and the target water temperature set value is larger than a preset threshold value in a preset time period.
In some alternative embodiments, the apparatus further comprises:
the data comparison module is used for comparing the received working operation data information fed back by the electronic thermostat with a preset normal working range;
and the data setting module is used for setting the target water temperature set value to a preset minimum water temperature value and reducing the rotating speed of the engine if the working operation data information is not in a preset normal working range.
Further functional descriptions of the above respective modules and units are the same as those of the above corresponding embodiments, and are not repeated here.
The electronic thermostat control device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit ) circuit, a processor and memory executing one or more software or fixed programs, and/or other devices that can provide the above-described functionality.
The embodiment of the invention also provides an engine control system, which is provided with the electronic thermostat control device shown in the figure 3, and comprises the following components: the system comprises an engine, an electronic thermostat arranged on the engine and a controller.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a controller according to an alternative embodiment of the present invention, as shown in fig. 4, the controller includes: one or more processors 10, memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components are communicatively coupled to each other using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions executing within the computer device, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to the interface. In some alternative embodiments, multiple processors and/or multiple buses may be used, if desired, along with multiple memories and multiple memories. Also, multiple computer devices may be connected, each providing a portion of the necessary operations (e.g., as a server array, a set of blade servers, or a multiprocessor system). One processor 10 is illustrated in fig. 4.
The processor 10 may be a central processor, a network processor, or a combination thereof. The processor 10 may further include a hardware chip, among others. The hardware chip may be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general-purpose array logic, or any combination thereof.
Wherein the memory 20 stores instructions executable by the at least one processor 10 to cause the at least one processor 10 to perform a method for implementing the embodiments described above.
The memory 20 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, memory 20 may optionally include memory located remotely from processor 10, which may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk, or solid state disk; the memory 20 may also comprise a combination of the above types of memories.
The computer device further comprises input means 30 and output means 40. The processor 10, memory 20, input device 30, and output device 40 may be connected by a bus or other means, for example in fig. 4.
The input device 30 may receive input numeric or character information and generate key signal inputs related to user settings and function control of the computer apparatus, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointer stick, one or more mouse buttons, a trackball, a joystick, and the like. The output means 40 may include a display device, auxiliary lighting means (e.g., LEDs), tactile feedback means (e.g., vibration motors), and the like. Such display devices include, but are not limited to, liquid crystal displays, light emitting diodes, displays and plasma displays. In some alternative implementations, the display device may be a touch screen.
The embodiments of the present invention also provide a computer readable storage medium, and the method according to the embodiments of the present invention described above may be implemented in hardware, firmware, or as a computer code which may be recorded on a storage medium, or as original stored in a remote storage medium or a non-transitory machine readable storage medium downloaded through a network and to be stored in a local storage medium, so that the method described herein may be stored on such software process on a storage medium using a general purpose computer, a special purpose processor, or programmable or special purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, a solid state disk or the like; further, the storage medium may also comprise a combination of memories of the kind described above. It will be appreciated that a computer, processor, microprocessor controller or programmable hardware includes a storage element that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the methods illustrated by the above embodiments.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope as defined.
Claims (10)
1. A method of controlling an electronic thermostat, the method comprising:
determining a first water temperature set point by searching a first cooling water temperature setting table based on the received data of the engine speed and the engine load;
correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value;
and controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
2. The electronic thermostat control method of claim 1 wherein the modifying the first water temperature setting based on the received ambient pressure, ambient temperature, and oil temperature for the engine comprises:
determining a correction value based on data of an ambient pressure, an ambient temperature and an engine oil temperature corresponding to the engine;
and adding the correction value with the first water temperature set value to obtain a target water temperature set value.
3. The electronic thermostat control method of claim 2 wherein determining the correction value based on the corresponding ambient pressure, ambient temperature, and oil temperature of the engine includes:
based on the received data of the engine speed and the engine load, determining a first water temperature value, a second water temperature value and a third water temperature value by respectively searching a second cooling water temperature setting table corresponding to the ambient pressure, a third cooling water temperature setting table corresponding to the ambient temperature and a fourth cooling water temperature setting table corresponding to the engine oil temperature;
based on the received data of the corresponding ambient pressure, ambient temperature and engine oil temperature of the engine, respectively determining a corresponding ambient pressure correction coefficient, an ambient temperature correction coefficient and an engine oil temperature correction coefficient;
multiplying the first water temperature value by an ambient pressure correction coefficient to obtain a first correction value;
multiplying the second water temperature value by the ambient temperature correction coefficient to obtain a second correction value;
multiplying the third water temperature value by the engine oil temperature correction coefficient to obtain a third correction value;
and adding the first correction value, the second correction value and the third correction value to obtain the correction value.
4. The method of controlling an electronic thermostat according to claim 2, wherein after obtaining the target water temperature set value, the method further comprises:
searching an engine water temperature limit value table based on the received data of the engine speed and the engine load to obtain a first water temperature limit value;
correcting the first water temperature limit value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a second water temperature limit value;
and comparing the target water temperature set value with a second water temperature limit value, and taking the second water temperature limit value as the target water temperature set value if the second water temperature set value is larger than the second water temperature limit value.
5. The electronic thermostat control method of claim 1, further comprising:
monitoring an actual water temperature value of the engine cooling water;
judging whether the difference value between the actual water temperature value of the engine cooling water and the target water temperature set value is larger than a preset threshold value or not;
when the difference value between the actual water temperature value of the engine cooling water and the target water temperature set value is larger than a preset threshold value in a preset time period, setting the target water temperature set value to be a preset minimum water temperature value, and reducing the rotating speed of the engine.
6. The electronic thermostat control method of claim 1, further comprising:
comparing the received working operation data information fed back by the electronic thermostat with a preset normal working range;
if the working operation data information is not in the preset normal working range, setting the target water temperature set value to a preset minimum water temperature value, and reducing the rotating speed of the engine.
7. An electronic thermostat control system, the system comprising:
an electronic thermostat;
the data acquisition unit is used for acquiring data of the rotating speed of the engine, the load of the engine, the corresponding ambient pressure of the engine, the ambient temperature and the engine oil temperature;
and the electronic control unit is in communication connection with the electronic thermostat and the data acquisition unit, and is used for determining a first water temperature set value by searching a first cooling water temperature setting table based on the received data of the engine rotating speed and the engine load, correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value, and controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
8. An electronic thermostat control device, the device comprising:
the first water temperature set value determining module is used for determining a first water temperature set value by searching a first cooling water temperature setting table based on the received data of the engine rotating speed and the engine load;
the target water temperature set value determining module is used for correcting the first water temperature set value based on the received data of the environment pressure, the environment temperature and the engine oil temperature corresponding to the engine to obtain a target water temperature set value;
and the electronic thermostat control module is used for controlling the working state of the electronic thermostat based on the target water temperature set value so that the actual water temperature value of the engine cooling water reaches the target water temperature set value.
9. An engine control system, comprising:
an engine;
an electronic thermostat disposed on the engine;
a controller, the controller comprising: the electronic thermostat control device of any one of claims 1 to 6, comprising a memory and a processor in communication with each other, the memory having stored therein computer instructions, the processor executing the computer instructions.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon computer instructions for causing a computer to execute the electronic thermostat control method as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310618253.4A CN116464545A (en) | 2023-05-29 | 2023-05-29 | Electronic thermostat control method, system, device and engine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310618253.4A CN116464545A (en) | 2023-05-29 | 2023-05-29 | Electronic thermostat control method, system, device and engine control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116464545A true CN116464545A (en) | 2023-07-21 |
Family
ID=87173897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310618253.4A Pending CN116464545A (en) | 2023-05-29 | 2023-05-29 | Electronic thermostat control method, system, device and engine control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116464545A (en) |
-
2023
- 2023-05-29 CN CN202310618253.4A patent/CN116464545A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109441864B (en) | Server fan control method, device, equipment and computer storage medium | |
| US8996850B2 (en) | Server system and auto-reset method of the same | |
| CN110486349B (en) | Filter failure detection method, hydraulic system, vehicle and storage medium | |
| CN109405053B (en) | Heating control method and heating furnace | |
| CN109185208B (en) | Fan speed regulation method and related device | |
| CN116464545A (en) | Electronic thermostat control method, system, device and engine control system | |
| CN106528320A (en) | Computer system | |
| CN113266457A (en) | Method and device for overheat protection of engine | |
| US20140177172A1 (en) | Fan control system and method | |
| CN116954334A (en) | Heat dissipation control method, device, server, computer equipment and storage medium | |
| CN115977985A (en) | Fan control method and device, electronic equipment and storage medium | |
| CN112922075B (en) | Excavator control method and system and excavator | |
| CN110609536B (en) | Method and device for controlling module in household appliance to be powered on and household appliance | |
| CN112131623A (en) | Server preheating method and device and server | |
| CN115623195A (en) | Television fault diagnosis method, device, equipment and storage medium | |
| CN112650099A (en) | Control method and control system of battery monitoring platform | |
| CN106210263B (en) | Mobile terminal shutdown method and system and mobile terminal | |
| CN104035457A (en) | Method for timely controlling transformer cooling device according to thermal aging rate of transformer | |
| CN114856791B (en) | Electronic control silicone oil fan control method and device and electronic equipment | |
| CN114562475B (en) | Control method and device of fan controller and substrate manager | |
| CN117130464A (en) | Electronic equipment power consumption control method and device, computer equipment and storage medium | |
| CN115306572B (en) | Engine starting method, device, equipment and medium | |
| CN107729201A (en) | A kind of server method for testing fatigue and system | |
| CN114789717A (en) | Rear power takeoff assembly control method, system and device and electronic equipment | |
| CN117193462A (en) | Gear adjusting method and device for electrical equipment, computer equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |