CN115434799B - Engine water temperature monitoring and early warning method, electronic equipment, storage medium and vehicle - Google Patents
Engine water temperature monitoring and early warning method, electronic equipment, storage medium and vehicle Download PDFInfo
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- CN115434799B CN115434799B CN202211126430.9A CN202211126430A CN115434799B CN 115434799 B CN115434799 B CN 115434799B CN 202211126430 A CN202211126430 A CN 202211126430A CN 115434799 B CN115434799 B CN 115434799B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 158
- 238000012544 monitoring process Methods 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000004044 response Effects 0.000 claims description 21
- 238000004590 computer program Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 description 21
- 238000004891 communication Methods 0.000 description 12
- 230000002528 anti-freeze Effects 0.000 description 8
- 230000005855 radiation Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/18—Control of the engine output torque
- F02D2250/26—Control of the engine output torque by applying a torque limit
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- 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 application provides an engine water temperature monitoring and early warning method, electronic equipment, a storage medium and a vehicle, wherein the method comprises the following steps: acquiring the current speed of the vehicle and the state of an engine; and carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature obtained in real time. According to the method provided by the application, the water temperature monitoring and early warning are carried out on the engine by combining the vehicle speed and/or the engine state and the water temperature of the engine at multiple angles, and different early warning strategies are adopted under different working conditions, so that the problem that unnecessary high-temperature alarms are sent under the condition that the engine has the capability of radiating heat is solved, and the driver is prevented from being distracted and caused to be unnecessarily panicked.
Description
Technical Field
The application relates to the technical field of automobiles, in particular to an engine water temperature monitoring and early warning method, electronic equipment, a storage medium and a vehicle.
Background
The engine water temperature refers to the temperature of cooling water wrapped around the engine, is an important parameter for representing whether the engine works normally, and if the engine water temperature exceeds the tolerance temperature of engine hardware, some important parts such as an engine cylinder body, a piston, a cylinder cover or a cylinder gasket are deformed and even scrapped.
In the related art, early warning is usually carried out according to the water temperature of the engine, so that people in the vehicle can timely know the condition that the water temperature of the engine is too high, and the engine can be overhauled timely. However, the warning is carried out only according to the water temperature of the engine, so that under the condition that some engines can radiate heat, an alarm of overhigh water temperature of the engine is still sent to the personnel in the vehicle, the attention of the driver is dispersed, and unnecessary panic is caused.
Disclosure of Invention
In view of the above, the application aims to provide an engine water temperature monitoring and early warning method, electronic equipment, a storage medium and a vehicle.
Based on the above purpose, the application provides an engine water temperature monitoring and early warning method, which comprises the following steps: acquiring the current speed of the vehicle and the state of an engine; and carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature obtained in real time.
Optionally, the performing water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature acquired in real time includes: determining a driving state according to the vehicle speed and the engine state; and carrying out water temperature monitoring and early warning on the engine according to the driving state and the engine water temperature obtained in real time.
Optionally, the determining the driving state according to the vehicle speed and the engine state includes: determining the driving state as an initial state in response to the engine state being a start state or a stop state; determining the driving state as a high-speed state in response to the engine state being an operating state and the vehicle speed being greater than or equal to a target speed; and in response to the engine state being an operating state and the vehicle speed being less than the target speed, determining the driving state as a slow state.
Optionally, the performing water temperature monitoring and early warning on the engine according to the driving state and the real-time acquired water temperature of the engine includes: responding to the driving state as the initial state, and stopping high-temperature early warning; responding to the driving state to be the high-speed state, and starting the high-temperature early warning when the water temperature of the engine is continuously greater than or equal to a target threshold value in a first duration; and responding to the driving state being the slow state, and the engine water temperature being continuously greater than or equal to the target threshold value in a second time period, and starting the high-temperature early warning, wherein the second time period is longer than the first time period.
Optionally, the performing water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature acquired in real time includes: and carrying out water temperature monitoring and early warning on the engine according to the engine state and the engine water temperature obtained in real time, wherein the water temperature monitoring and early warning specifically comprises the following steps: responding to the engine state as an operating state, and starting high-temperature early warning when the engine water temperature is continuously greater than or equal to a target threshold value in a first duration; and stopping the high-temperature early warning in response to the engine state being a start state or a stop state.
Optionally, the performing water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature acquired in real time includes: and carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and the engine water temperature obtained in real time, wherein the water temperature monitoring and early warning specifically comprises the following steps: responding to the vehicle speed being greater than or equal to a target speed, and the engine water temperature being continuously greater than or equal to a target threshold value in a first duration, and starting high-temperature early warning; and responding to the vehicle speed being smaller than the target speed, and the engine water temperature being continuously larger than or equal to the target threshold value in a second time period, and starting the high-temperature early warning, wherein the second time period is longer than the first time period.
Optionally, the method further comprises: and in response to starting the high-temperature early warning, starting an engine torque limiting protection, and gradually reducing the maximum torque of the engine from a first preset torque to a second preset torque.
Based on the same inventive concept, the application also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of the above when executing the program.
Based on the same inventive concept, the present application also provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method of any one of the above.
Based on the same inventive concept, the application also provides a vehicle comprising the electronic device.
From the above, the method for monitoring and early warning the water temperature of the engine, the electronic equipment, the storage medium and the vehicle provided by the application, wherein the method comprises the following steps: acquiring the current speed of the vehicle and the state of an engine; and carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature obtained in real time. According to the method provided by the application, the water temperature monitoring and early warning are carried out on the engine by combining the vehicle speed and/or the engine state and the water temperature of the engine at multiple angles, and different early warning strategies are adopted under different working conditions, so that the problem that unnecessary high-temperature alarms are sent under the condition that the engine still has the capability of radiating heat is solved, and the driver is prevented from being distracted and caused to be unnecessarily panicked.
Drawings
In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic flow chart of an engine water temperature monitoring and early warning method according to an embodiment of the application;
FIG. 2 is a schematic flow chart of determining driving status according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of water temperature monitoring and early warning according to the engine state in the embodiment of the application;
FIG. 4 is a schematic diagram of a flow chart of water temperature monitoring and early warning according to the vehicle speed in the embodiment of the application;
fig. 5 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the application.
Detailed Description
The present application will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present application more apparent.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
For ease of understanding, a brief description of the engine heat dissipation principle is provided below:
The main heat dissipation strategy of most automobile engines is water-cooling heat dissipation, namely, heat dissipation is carried out on the engine by using circulating cooling water or antifreeze. The antifreeze fluid of the water-cooled engine has two circulation paths in the vehicle, one is in large circulation and the other is in small circulation. When the engine is just started, the antifreeze is in small circulation, and the antifreeze cannot pass through the radiating water tank at the moment, so that the engine is heated up quickly during starting. When the engine reaches a normal working interval, the antifreeze fluid can radiate heat through the radiating water tank, so that the engine is maintained in a normal temperature interval.
In addition, the engine can also assist in heat dissipation by heat radiation, although most of the heat of the engine is dissipated by the circulating cooling water system, a part of the heat still radiates and dissipates through the surface of the engine, and when the vehicle starts to move forward, the air flow flowing through the surface of the vehicle can take away a part of the radiated heat to further assist the heat dissipation of the engine.
Therefore, only when the engine is in a running state and the vehicle runs at a high speed, the engine heat dissipation system can exert hundred percent of heat dissipation capacity, and in the related art, early warning is only carried out according to the water temperature of the engine, so that under the condition that some engines have residual heat dissipation capacity, an alarm of overhigh water temperature of the engine can be sent to the personnel in the vehicle, the attention of the personnel is dispersed, and unnecessary panic is caused.
In view of this, an embodiment of the present application provides a method for monitoring and early warning of engine water temperature, as shown in fig. 1, including:
Step S101, a current vehicle speed and an engine state of the vehicle are obtained. In specific implementation, the vehicle speed and the engine state may be obtained through a CAN (ControllerAreaNetwork ).
And step S102, carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature obtained in real time. The method comprises the steps of carrying out water temperature monitoring and early warning on the engine according to the speed and/or the engine state and the engine water temperature obtained in real time, determining different water temperature monitoring and early warning strategies according to the speed and/or the engine state, and then monitoring whether the engine water temperature needs high-temperature early warning or not according to the determined water temperature monitoring and early warning strategies.
According to the method provided by the application, the water temperature monitoring and early warning are carried out on the engine by combining the vehicle speed and/or the engine state and the water temperature of the engine at multiple angles, and different early warning strategies are adopted under different working conditions, so that the problem that unnecessary high-temperature alarms are sent under the condition that the engine still has the capability of radiating heat is solved, and the driver is prevented from being distracted and caused to be unnecessarily panicked.
In specific implementation, whether the vehicle speed is received or not is judged by an ESP (Electronic Stability Program, vehicle body electronic stability system), the ESP consists of a control unit, a steering sensor, a wheel sensor, a sideslip sensor, a lateral acceleration sensor and the like, the current vehicle speed can be judged according to signals of the sensors, and if the data acquired by the sensors are correctly received, a vehicle speed validity signal is sent, so that the vehicle speed is received. However, the sensor may fail, so the above embodiment includes a case of performing water temperature monitoring and early warning based on the engine state (and the engine water temperature) alone.
Whether the engine state is received or not is judged by an engine state signal sent by the CAN network. However, the CAN network may have communication failure, so the above embodiment includes the case of performing water temperature monitoring and early warning solely according to the vehicle speed (and the engine water temperature).
The present application provides an embodiment in which the vehicle speed and the engine state can be acquired, in which the step S102 includes:
step S201, determining a driving state according to the vehicle speed and the engine state.
And step S202, carrying out water temperature monitoring and early warning on the engine according to the driving state and the engine water temperature obtained in real time.
According to the method provided by the application, the water temperature monitoring and early warning are carried out on the engine by combining the speed, the engine state and the water temperature of the engine, so that the problem that unnecessary high-temperature alarms are sent under the condition that the engine still has the capability of radiating heat can be solved by utilizing more early warning strategies, and the driver is further prevented from being distracted and caused to be unnecessarily panicked.
In some embodiments, as shown in fig. 2, the step S201 includes:
And determining the driving state as an initial state in response to the engine state being a start state or a stop state. In specific implementation, the initial state may be a state in which the automobile has just been powered on, or in which the engine has just been started.
And determining the driving state as a high-speed state in response to the engine state being an operating state and the vehicle speed being equal to or greater than a target speed. In the implementation, the high-speed state may be a state in which the automobile is normally running. In a specific embodiment, the target speed is 8km/h to 12km/h, preferably 10km/h. The target speed is the minimum speed of the automobile normally running on the unobstructed road, and the adjustment of the target speed based on the principle by a person skilled in the art without creative labor is within the protection scope of the application.
And in response to the engine state being an operating state and the vehicle speed being less than the target speed, determining the driving state as a slow state. In the implementation, the slow state may be a state in which the vehicle runs at a slower speed when it encounters a traffic jam or the like.
According to the vehicle speed and the engine state, three different vehicle driving states can be determined, so that different early warning strategies can be adopted according to the driving states, the problem that unnecessary high-temperature alarms are sent under the condition that the engine still has the capability of radiating heat is further solved, and the driver is prevented from being distracted and unnecessary panic is caused.
Those skilled in the art can know that the operating states of the engine include a stop state, a start state, an idle state, a running state, and a coasting state, and the operating states in the above embodiments of the present application include an idle state, a running state, and a coasting state.
In some embodiments, the step S202 includes:
Responding to the driving state as the initial state, and executing a first water temperature monitoring and early warning strategy: and stopping high-temperature early warning. According to the engine heat dissipation principle, when the driving state is the initial state, namely, when the engine is just started, the antifreeze fluid is in a low-temperature state with high probability, the antifreeze fluid is in a small circulation state, the antifreeze fluid cannot pass through the heat dissipation water tank at the moment, and because the vehicle is in a stationary state, heat cannot be taken away by heat radiation, and at the moment, the engine has great heat dissipation potential. However, considering summer heat, if the vehicle is subjected to long-time direct solar radiation, the temperature of the engine is likely to exceed the early warning threshold value just after starting, but the high temperature of the engine under the condition can be completely dissipated by the cooling liquid in a large circulation way and heat radiation after starting to run, and the early warning of the high temperature of the engine under the condition is unnecessary. According to the embodiment of the application, the high-temperature early warning information is stopped being sent under the condition, so that the problem that unnecessary high-temperature alarms are sent under the condition that the engine still has the capability of radiating heat is further solved, and the driver is further prevented from being distracted and unnecessarily panicked.
And responding to the driving state as the high-speed state, executing a second water temperature monitoring and early warning strategy: and the water temperature of the engine is continuously greater than or equal to a target threshold value in a first duration, and the high-temperature early warning is started. If the driving state is a high-speed state, it means that the vehicle engine heat dissipation system is performing full-load heat dissipation operation at this time, and in this case, it is necessary to monitor the engine water temperature relatively closely.
In a specific embodiment, the first duration is 2s to 120s, the target threshold is 108 ℃ to 110 ℃, the setting of the value refers to the value of some parameters related to overheat of the engine in the related art, and in specific implementation, a person skilled in the art can refer to the first duration which can cause the engine to fail in actual situations and the target threshold, for example, if a certain engine has better heat dissipation performance due to self design, the target threshold for the engine design can be higher than 110 ℃, and the first duration can be higher than 120s; because of poor heat dissipation performance of the engine, the target threshold designed for the engine can be lower than 108 ℃, and the first time period can be 2s to 50s. The setting of the target threshold and the first time period by the person skilled in the art without performing any creative effort is within the protection scope of the present application, and the second time period and the normal threshold are the same as the first time period and are not described in detail later.
Responding to the driving state as the slow state, and executing a third water temperature monitoring and early warning strategy: and the water temperature of the engine is continuously greater than or equal to the target threshold value in a second time period, and the high-temperature early warning is started, wherein the second time period is longer than the first time period. If the driving state is a slow state, the heat radiation can not be driven by faster air flow, so that the engine heat radiation system of the vehicle still has a certain heat radiation potential, the monitoring force on the water temperature of the engine can be properly reduced, and the response early warning time is relatively prolonged. In a specific embodiment, the second duration is 120s to 600s.
In the embodiment of the application, the starting of the high-temperature early warning comprises the steps of sending a high-temperature early warning message, starting the high-temperature Wen Dishi and other technical means capable of prompting a person in the vehicle that the water temperature of the engine is too high. In a specific embodiment, in response to starting the high temperature early warning, the ECM (Engine ControlModule ) determines that the water temperature of the engine is high according to internal logic, a signal 1 with a high water temperature alarm flag bit 1 is sent through a PT CAN (PT Controller Area Network, power transmission system controller area network), and the instrument receives the signal 1 through the PT CAN and prompts an in-vehicle user that the water temperature of the engine is too high; if the high-temperature early warning information does not need to be sent, the ECM judges that the water temperature of the engine is normal according to the internal logic, a signal 2 with a normal water temperature warning zone bit 2 is sent through the PT CAN, and the instrument receives the signal 2 through the PT CAN and does not prompt the user in the vehicle that the water temperature of the engine is too high. The prompt of the excessive water temperature of the engine to the user in the vehicle can be realized by lighting a high water temperature indicator lamp on an instrument panel, or the words of 'the high water temperature of the engine and the safe parking' are displayed on other display devices in the vehicle. In the embodiment of the present application, the content related to starting high-temperature early warning may refer to this section, and will not be described in detail later.
It should be noted that, when the driving state changes, it is determined whether to start the high-temperature early warning and to need to count again, for example, from the low-speed state to the high-speed state, the first time period needs to count again, and similarly, from the high-speed state to the low-speed state, the second time period needs to count again.
Because the current speed and the engine state of the vehicle can not be successfully obtained each time when the vehicle is actually used, the following embodiments of the application provide different early warning strategies aiming at different conditions, so that the engine water temperature monitoring and early warning can cover all possible conditions in driving.
In some embodiments, when the vehicle speed cannot be successfully obtained, the water temperature monitoring and early warning are performed on the engine according to the engine state and the engine water temperature obtained in real time, as shown in fig. 3, including:
And responding to the engine state as the running state, executing the second water temperature monitoring and early warning strategy: and the water temperature of the engine is continuously greater than or equal to a target threshold value in a first duration, and high-temperature early warning is started.
And responding to the engine state being a starting state or a stopping state, executing the first water temperature monitoring and early warning strategy: and stopping high-temperature early warning.
Under the condition that the vehicle speed can not be received, when the water temperature monitoring and early warning are carried out only according to the engine state and the water temperature of the engine, the engine heat dissipation system is used for dissipating heat at full load when the default engine is in the running state, so that the problem that the engine can not be timely subjected to high-temperature early warning is avoided. The further description and the beneficial effects of the first and second water temperature monitoring and early warning strategies and the third water temperature monitoring and early warning strategy are the same as those in the foregoing embodiments, and are not repeated.
In some embodiments, when the engine state cannot be successfully obtained, the water temperature monitoring and early warning are performed on the engine according to the vehicle speed and the real-time obtained water temperature of the engine, as shown in fig. 4, including:
and responding to the vehicle speed being greater than or equal to a target speed, executing the second water temperature monitoring and early warning strategy: and the water temperature of the engine is continuously greater than or equal to a target threshold value in a first duration, and high-temperature early warning is started.
And responding to the vehicle speed being smaller than the target speed, executing the third water temperature monitoring and early warning strategy: and the water temperature of the engine is continuously greater than or equal to the target threshold value in a second time period, and high-temperature early warning is started, wherein the second time period is longer than the first time period.
Under the condition that the engine state cannot be received, when water temperature monitoring and early warning are carried out only according to the vehicle speed and the water temperature of the engine, the default engine is always in an operating state, and the engine heat dissipation system has certain heat dissipation potential, so that the problem that high-temperature early warning cannot be carried out on the engine in time is avoided. In some embodiments, when the vehicle speed and the engine state cannot be successfully obtained, performing water temperature monitoring and early warning on the engine according to the engine water temperature obtained in real time, specifically including:
Executing the second water temperature monitoring and early warning strategy: and responding to the engine water temperature being continuously greater than or equal to a target threshold value in a first duration, and sending high-temperature early warning information.
Under the condition that the vehicle speed and the engine state cannot be received, when water temperature monitoring and early warning are carried out only according to the water temperature of the engine, the default driving state is always in a high-speed state, and the engine heat dissipation system dissipates heat at full load, so that the problem that the engine cannot be timely subjected to high-temperature early warning is avoided.
In some embodiments, the method further comprises:
and in response to starting the high-temperature early warning, starting an engine torque limiting protection, and gradually reducing the maximum torque of the engine from a first preset torque to a second preset torque.
By reducing the torque of the engine, the power of the engine can be reduced, the work is reduced, the damage of components caused by continuous overheating of the engine is radically avoided when the high-temperature early warning is started, the service life of the engine is prolonged, and the maintenance cost is reduced.
The first preset torque is the rated maximum torque of the engine, for example, 200 N.m, and the second preset torque is the torque corresponding to the lowest running speed of the vehicle allowed on the expressway, for example, 80 N.m, and the vehicle is enabled to maintain the vehicle speed of 70km/h under the steady state of a flat road surface without limitation; the method of controlling the maximum torque of the engine may be, for example, to adjust the intake air amount of the engine, and is not particularly limited.
In a specific embodiment, the step of reducing the maximum torque of the engine from the first preset torque to the second preset torque further includes:
Gradually reducing the maximum torque of the engine from the first preset torque to the second preset torque according to a preset attenuation proportion; and/or gradually reducing the maximum torque of the engine from the first preset torque to the second preset torque within a preset decay time.
The process of reducing the maximum torque of the engine from the first preset torque to the second preset torque is gradient change by setting the preset attenuation proportion and/or the preset attenuation time, so that the vehicle can be stably changed, the user experience is improved, the preset attenuation proportion is reduced by 1% to 2% of the first preset torque every 50ms, the preset attenuation time is 8s, and the maximum torque of the engine can be adjusted according to the requirements without limitation; the first preset torque may be reduced to the second preset torque within the preset decay time according to the preset decay proportion, which is not particularly limited.
In some embodiments, the method further comprises:
And responding to the starting of the high-temperature early warning, wherein the water temperature of the engine is lower than a normal threshold value, and stopping the high-temperature early warning.
When the temperature of the engine is recovered to be normal through the heat dissipation system, the alarm is stopped, so that the driver is further prevented from being distracted and unnecessary panic is caused. In a specific embodiment, the normal threshold is 108 ℃ when the target threshold is 110 ℃, or 106 ℃ when the target threshold is 108 ℃.
In some embodiments, the method further comprises:
And after the high-temperature early warning is started, the water temperature of the engine is lower than the normal threshold value, the engine torque limiting protection is released, and the maximum torque of the engine is increased from the second preset torque to the first preset torque so as to restore the normal working efficiency of the engine.
In a specific embodiment, the process of increasing the maximum torque of the engine from the second preset torque to the first preset torque is also changed in a gradient manner, so as to ensure that the vehicle speed changes steadily, and the changing manner is the same as the manner of reducing the maximum torque, which is not described herein.
It should be noted that, the method of the embodiment of the present application may be performed by a single device, for example, a computer or a server. The method of the embodiment can also be applied to a distributed scene, and is completed by mutually matching a plurality of devices. In the case of such a distributed scenario, one of the devices may perform only one or more steps of the method of an embodiment of the present application, the devices interacting with each other to accomplish the method.
It should be noted that the foregoing describes some embodiments of the present application. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Based on the same inventive concept, the application also provides an engine water temperature monitoring and early warning device corresponding to the method in any embodiment, which comprises the following steps:
The acquisition module is configured to acquire the current speed of the vehicle and the state of the engine;
And the early warning module is configured to monitor and early warn the water temperature of the engine according to the vehicle speed and/or the engine state and the engine water temperature acquired in real time.
The device provided by the application monitors and pre-warns the water temperature of the engine by combining the vehicle speed and/or the engine state and the water temperature of the engine at multiple angles, adopts different pre-warning strategies under different working conditions, solves the problem of sending unnecessary high-temperature alarms under the condition that the engine still has the capability of radiating heat, and avoids the problems of dispersing the attention of a driver and causing unnecessary panic.
In some embodiments, the pre-warning module includes a first pre-warning unit configured to:
determining a driving state according to the vehicle speed and the engine state;
And carrying out water temperature monitoring and early warning on the engine according to the driving state and the engine water temperature obtained in real time.
In some embodiments, the first pre-warning unit is further configured to: determining the driving state as an initial state in response to the engine state being a start state or a stop state;
Determining the driving state as a high-speed state in response to the engine state being an operating state and the vehicle speed being greater than or equal to a target speed;
And in response to the engine state being an operating state and the vehicle speed being less than the target speed, determining the driving state as a slow state.
In some embodiments, the first pre-warning unit is further configured to: and responding to the driving state as the initial state, and stopping high-temperature early warning.
In some embodiments, the pre-warning unit is further configured to:
responding to the driving state to be the high-speed state, and starting the high-temperature early warning when the water temperature of the engine is continuously greater than or equal to a target threshold value in a first duration;
And responding to the driving state being the slow state, and the engine water temperature being continuously greater than or equal to the target threshold value in a second time period, and starting the high-temperature early warning, wherein the second time period is longer than the first time period.
In some embodiments, the pre-warning module includes a second pre-warning unit configured to:
And carrying out water temperature monitoring and early warning on the engine according to the engine state and the engine water temperature obtained in real time, wherein the water temperature monitoring and early warning specifically comprises the following steps:
Responding to the engine state as an operating state, and starting high-temperature early warning when the engine water temperature is continuously greater than or equal to a target threshold value in a first duration;
And stopping the high-temperature early warning in response to the engine state being a start state or a stop state.
In some embodiments, the pre-warning module includes a third pre-warning unit configured to:
And carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and the engine water temperature obtained in real time, wherein the water temperature monitoring and early warning specifically comprises the following steps: responding to the vehicle speed being greater than or equal to a target speed, and the engine water temperature being continuously greater than or equal to a target threshold value in a first duration, and starting high-temperature early warning;
and responding to the vehicle speed being smaller than the target speed, and the engine water temperature being continuously larger than or equal to the target threshold value in a second time period, and starting the high-temperature early warning, wherein the second time period is longer than the first time period.
In some embodiments, the apparatus further comprises a torque limiting protection module configured to:
and in response to starting the high-temperature early warning, starting an engine torque limiting protection, and gradually reducing the maximum torque of the engine from a first preset torque to a second preset torque.
For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present application.
The device of the above embodiment is used for implementing the corresponding engine water temperature monitoring and early warning method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, the application also provides an electronic device corresponding to the method of any embodiment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the engine water temperature monitoring and early warning method of any embodiment when executing the program.
Fig. 5 shows a more specific hardware architecture of an electronic device according to this embodiment, where the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. Wherein processor 1010, memory 1020, input/output interface 1030, and communication interface 1040 implement communication connections therebetween within the device via a bus 1050.
The processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit ), a microprocessor, an Application SPECIFIC INTEGRATED Circuit (ASIC), or one or more integrated circuits, etc. for executing related programs to implement the technical solutions provided in the embodiments of the present disclosure.
The Memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage, dynamic storage, etc. Memory 1020 may store an operating system and other application programs, and when the embodiments of the present specification are implemented in software or firmware, the associated program code is stored in memory 1020 and executed by processor 1010.
The input/output interface 1030 is used to connect with an input/output module for inputting and outputting information. The input/output module may be configured as a component in a device (not shown) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.
Communication interface 1040 is used to connect communication modules (not shown) to enable communication interactions of the present device with other devices. The communication module may implement communication through a wired manner (such as USB, network cable, etc.), or may implement communication through a wireless manner (such as mobile network, WIFI, bluetooth, etc.).
Bus 1050 includes a path for transferring information between components of the device (e.g., processor 1010, memory 1020, input/output interface 1030, and communication interface 1040).
It should be noted that although the above-described device only shows processor 1010, memory 1020, input/output interface 1030, communication interface 1040, and bus 1050, in an implementation, the device may include other components necessary to achieve proper operation. Furthermore, it will be understood by those skilled in the art that the above-described apparatus may include only the components necessary to implement the embodiments of the present description, and not all the components shown in the drawings.
The electronic device of the foregoing embodiment is configured to implement the corresponding engine water temperature monitoring and early warning method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, the application also provides a non-transitory computer readable storage medium corresponding to the method of any embodiment, wherein the non-transitory computer readable storage medium stores computer instructions for causing the computer to execute the engine water temperature monitoring and early warning method according to any embodiment.
The computer readable media of the present embodiments, including both permanent and non-permanent, removable and non-removable media, may be used to implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
The storage medium of the above embodiment stores computer instructions for causing the computer to execute the engine water temperature monitoring and early warning method according to any one of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described herein.
Based on the same inventive concept, the application also provides a vehicle corresponding to the method of any embodiment, wherein the vehicle comprises the electronic equipment of the embodiment, and has the beneficial effects of the embodiment of the corresponding electronic equipment, which are not repeated herein.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the application as described above, which are not provided in detail for the sake of brevity.
Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and also in view of the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
While the application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are within the spirit and principles of the embodiments of the application, are intended to be included within the scope of the application.
Claims (8)
1. The engine water temperature monitoring and early warning method is characterized by comprising the following steps of:
Acquiring the current speed of the vehicle and the state of an engine;
According to the vehicle speed and/or the engine state and the engine water temperature obtained in real time, carrying out water temperature monitoring and early warning on the engine, comprising the following steps:
Determining a driving state according to the vehicle speed and the engine state, including: determining the driving state as an initial state in response to the engine state being a start state or a stop state; determining the driving state as a high-speed state in response to the engine state being an operating state and the vehicle speed being greater than or equal to a target speed; determining the driving state as a slow state in response to the engine state being an operating state and the vehicle speed being less than the target speed;
And carrying out water temperature monitoring and early warning on the engine according to the driving state and the engine water temperature obtained in real time.
2. The method according to claim 1, wherein the performing water temperature monitoring and early warning on the engine according to the driving state and the real-time acquired water temperature of the engine comprises:
Responding to the driving state as the initial state, and stopping high-temperature early warning;
responding to the driving state to be the high-speed state, and starting the high-temperature early warning when the water temperature of the engine is continuously greater than or equal to a target threshold value in a first duration;
And responding to the driving state being the slow state, and the engine water temperature being continuously greater than or equal to the target threshold value in a second time period, and starting the high-temperature early warning, wherein the second time period is longer than the first time period.
3. The method according to claim 1, wherein the performing water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature acquired in real time comprises:
And carrying out water temperature monitoring and early warning on the engine according to the engine state and the engine water temperature obtained in real time, wherein the water temperature monitoring and early warning specifically comprises the following steps:
Responding to the engine state as an operating state, and starting high-temperature early warning when the engine water temperature is continuously greater than or equal to a target threshold value in a first duration;
And stopping the high-temperature early warning in response to the engine state being a start state or a stop state.
4. The method according to claim 1, wherein the performing water temperature monitoring and early warning on the engine according to the vehicle speed and/or the engine state and the engine water temperature acquired in real time comprises:
and carrying out water temperature monitoring and early warning on the engine according to the vehicle speed and the engine water temperature obtained in real time, wherein the water temperature monitoring and early warning specifically comprises the following steps:
Responding to the vehicle speed being greater than or equal to a target speed, and the engine water temperature being continuously greater than or equal to a target threshold value in a first duration, and starting high-temperature early warning;
and responding to the vehicle speed being smaller than the target speed, and the engine water temperature being continuously larger than or equal to the target threshold value in a second time period, and starting the high-temperature early warning, wherein the second time period is longer than the first time period.
5. The method according to any one of claims 2 to 4, further comprising:
and in response to starting the high-temperature early warning, starting an engine torque limiting protection, and gradually reducing the maximum torque of the engine from a first preset torque to a second preset torque.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 5 when the program is executed by the processor.
7. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 5.
8. A vehicle comprising the electronic device of claim 6.
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