A state identification method, device and equipment of a cooling system and a vehicle

Abstract

The application discloses a kind of cooling system state identification method, device, equipment and vehicle, according to the first experimental environment temperature when test bench development, first experimental outlet water temperature and first experimental altitude, determine the first preset outlet water temperature threshold based on the speed of engine and per cycle injection amount, to determine the first calculated outlet water temperature threshold;According to the second experimental environment temperature and second experimental outlet water temperature when heat balance experiment, determine the second preset outlet water temperature threshold based on the speed of engine and per cycle injection amount, to determine the second calculated outlet water temperature threshold;According to the first calculated outlet water temperature threshold and second calculated outlet water temperature threshold, determine the actual outlet water temperature threshold of engine;If the outlet water temperature acquired in real time is greater than or equal to actual outlet water temperature threshold, then determine that the cooling system of engine is in abnormal state. Water temperature of engine can be monitored, long time low water temperature operation caused by cooling system in abnormal state can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of state recognition of cooling systems, and in particular to a state recognition method, device, equipment and vehicle of a cooling system. BACKGROUND

[0002] When the engine is in normal operation, the oil consumption and water temperature thereof are basically consistent with the bench development data under different working conditions. However, when the water temperature and oil consumption are abnormal, such as the water temperature being too low and the oil consumption being too large, it is usually because the cooling system is abnormal or damaged, so that the coolant temperature of the engine is continuously low, resulting in increased oil consumption and low engine oil temperature.

[0003] The cooling system includes a water pump, a thermostat, a fan and the like. The cooling system keeps the engine in an appropriate temperature range under all working conditions. The thermostat is a valve for controlling the flow path of coolant and is an automatic temperature control device. It usually contains a temperature sensing component and opens or closes the flow of liquid by thermal expansion or contraction.

[0004] The control method of the engine electronic control unit in the prior art is not perfect in engine state monitoring, and the water temperature of the engine is not detected. After a long time of low water temperature operation, it is easy to cause problems such as increased oil consumption and low engine oil temperature. SUMMARY

[0005] The present application provides a state recognition method, device, equipment and vehicle of a cooling system, which can monitor the water temperature of the engine and avoid long-time low water temperature operation caused by the cooling system being in an abnormal state.

[0006] In a first aspect, the present application provides a state recognition method of a cooling system, comprising:

[0007] obtaining the running state of the engine;

[0008] if it is detected that the engine is in a starting state, obtaining the ambient temperature, the altitude, the outlet water temperature, the speed of the engine and the injection amount per cycle of the engine in real time;

[0009] determining a first preset outlet water temperature threshold based on the speed and the injection amount per cycle of the engine according to a first experimental ambient temperature, a first experimental outlet water temperature and a first experimental altitude during bench development, so as to determine a first calculated outlet water temperature threshold; during the bench development, the vehicle is in an empty load state;

[0010] determining a second preset outlet water temperature threshold based on the speed and the injection amount per cycle of the engine according to a second experimental ambient temperature and a second experimental outlet water temperature during a thermal equilibrium experiment, so as to determine a second calculated outlet water temperature threshold; during the thermal equilibrium experiment, the vehicle is in a load state;

[0011] determining an actual outlet water temperature threshold of the engine according to the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold;

[0012] comparing the real-time acquired outlet water temperature with the actual outlet water temperature threshold;

[0013] if the real-time acquired outlet water temperature is greater than or equal to the actual outlet water temperature threshold, determining that the cooling system of the engine is in an abnormal state.

[0014] Optionally, the real-time acquisition of the ambient temperature, the altitude, the outlet water temperature, the rotating speed of the engine and the injection amount per cycle of the engine if the engine is detected to be in the starting state comprises:

[0015] detecting that the rotating speed of the engine is greater than a preset rotating speed and lasts for a preset time;

[0016] real-time acquisition of the ambient temperature, the altitude, the outlet water temperature, the rotating speed of the engine and the injection amount per cycle of the engine.

[0017] Optionally, the determination of the first preset outlet water temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to the first experimental ambient temperature, the first experimental outlet water temperature and the first experimental altitude during the bench development, so as to determine the first calculated outlet water temperature threshold comprises:

[0018] determination of a first mapping diagram based on the rotating speed and the injection amount per cycle of the engine according to the first experimental ambient temperature, the first experimental outlet water temperature and the first experimental altitude during the bench development;

[0019] determination of the first preset outlet water temperature threshold and an altitude coefficient according to the first mapping diagram and the real-time acquired altitude;

[0020] determination of the first calculated outlet water temperature threshold according to the first preset outlet water temperature threshold and the altitude coefficient.

[0021] Optionally, the determination of the first calculated outlet water temperature threshold according to the first preset outlet water temperature threshold and the altitude coefficient comprises:

[0022] determination of the first calculated outlet water temperature threshold as a product of the first preset outlet water temperature threshold and the altitude coefficient according to the first preset outlet water temperature threshold and the altitude coefficient.

[0023] Optionally, the determination of the second preset outlet water temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to the second experimental ambient temperature and the second experimental outlet water temperature during the heat balance experiment, so as to determine the second calculated outlet water temperature threshold comprises:

[0024] determining a second mapping based on the engine speed and the injection quantity per cycle according to the second experimental ambient temperature and the second experimental outlet water temperature during the heat balance experiment;

[0025] determining the second preset outlet water temperature threshold and the ambient temperature coefficient according to the second mapping and the real-time acquired ambient temperature;

[0026] determining the second calculated outlet water temperature threshold according to the second preset outlet water temperature threshold and the ambient temperature coefficient.

[0027] Optionally, the determining the second calculated outlet water temperature threshold according to the second preset outlet water temperature threshold and the ambient temperature coefficient comprises:

[0028] determining the second calculated outlet water temperature threshold as a product of the second preset outlet water temperature threshold and the ambient temperature coefficient according to the second preset outlet water temperature threshold and the ambient temperature coefficient.

[0029] Optionally, the determining the actual outlet water temperature threshold of the engine according to the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold comprises:

[0030] determining the actual outlet water temperature threshold of the engine as an average of the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold.

[0031] In a second aspect, the embodiment of the present application further provides a state recognition device of a cooling system, comprising:

[0032] an engine state recognition module, configured to acquire an operating state of an engine;

[0033] a parameter acquisition module, configured to acquire an ambient temperature, an altitude, an outlet water temperature, an engine speed and an injection quantity per cycle of the engine in real time if the engine state recognition module detects that the engine is in a starting state;

[0034] a first calculated outlet water temperature threshold acquisition module, configured to determine a first preset outlet water temperature threshold based on a first experimental ambient temperature, a first experimental outlet water temperature and a first experimental altitude during bench development, so as to determine a first calculated outlet water temperature threshold; during the bench development, a vehicle is in an empty load state.

[0035] a second calculated outlet water temperature threshold obtaining module configured to determine a second preset outlet water temperature threshold based on a second experimental ambient temperature and a second experimental outlet water temperature during a heat balance experiment, and determine a second calculated outlet water temperature threshold based on the engine speed and the injection amount per cycle, wherein the vehicle is in a load state during the heat balance experiment;

[0036] an actual outlet water temperature threshold obtaining module configured to determine an actual outlet water temperature threshold of the engine based on the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold;

[0037] an outlet water temperature identifying module configured to compare the real-time acquired outlet water temperature with the actual outlet water temperature threshold;

[0038] an engine state identifying module configured to determine that the cooling system of the engine is in an abnormal state if the real-time acquired outlet water temperature is greater than or equal to the actual outlet water temperature threshold.

[0039] In a third aspect, an embodiment of the present application further provides a cooling system state identifying device, which comprises at least one processor and a memory in communication connection with the at least one processor.

[0040] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the cooling system state identifying method according to the first aspect.

[0041] In a fourth aspect, an embodiment of the present application further provides a vehicle comprising the cooling system state identifying device according to the third aspect.

[0042] The embodiment of the present application provides a state recognition method, device and equipment of a cooling system and a vehicle, and the method comprises the following steps: obtaining the running state of an engine; if it is detected that the engine is in a starting state, obtaining the ambient temperature, altitude, outlet water temperature, rotating speed of the engine and injection amount per cycle of the engine in real time; determining a first preset outlet water temperature threshold based on the rotating speed and injection amount per cycle of the engine according to the first experimental ambient temperature, first experimental outlet water temperature and first experimental altitude during bench development, so as to determine a first calculated outlet water temperature threshold; during the bench development, the vehicle is in an empty load state; determining a second preset outlet water temperature threshold based on the rotating speed and injection amount per cycle of the engine according to the second experimental ambient temperature and second experimental outlet water temperature during a heat balance experiment, so as to determine a second calculated outlet water temperature threshold; during the heat balance experiment, the vehicle is in a load state; determining the actual outlet water temperature threshold of the engine according to the first calculated outlet water temperature threshold and second calculated outlet water temperature threshold; comparing the real-time obtained outlet water temperature with the actual outlet water temperature threshold; if the real-time obtained outlet water temperature is greater than or equal to the actual outlet water temperature threshold, it is determined that the cooling system of the engine is in an abnormal state. The embodiment of the present application can monitor the water temperature of the engine, can avoid the problems of increased fuel consumption and low engine oil temperature caused by long-time low water temperature operation of the cooling system in an abnormal state, and since the actual outlet water temperature threshold provided by the embodiment of the present application comprehensively considers the outlet water temperature thresholds in two different situations of bench development and heat balance experiment, the embodiment of the present application is more accurate in state recognition of the cooling system and can better meet the actual use requirements.

[0043] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0045] Figure 1 A flow chart of a state recognition method of a cooling system provided by the embodiment of the present application;

[0046] Figure 2 A flow chart of another state recognition method of a cooling system provided by the embodiment of the present application;

[0047] Figure 3 A structural schematic diagram of a state recognition device of a cooling system provided by the embodiment of the present application;

[0048] Figure 4 A structure diagram of a state recognition device of a cooling system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0049] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work should fall within the scope of protection of the present application.

[0050] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, method, product or device.

[0051] Figure 1 A flowchart of a state recognition method of a cooling system provided by an embodiment of the present application, the embodiment can be applicable to recognizing whether the cooling system of a vehicle engine is abnormal, the method can be executed by a state recognition device of the cooling system, and the state recognition device of the cooling system can be realized in the form of hardware and / or software. As shown in the figure, the method comprises: Figure 1

[0052] S110, obtaining an operating state of the engine.

[0053] Specifically, the operating state of the engine can include a starting state of the engine, and in the embodiment of the present application, the starting state of the engine can be obtained by obtaining the rotating speed of the engine.

[0054] S120, if it is detected that the engine is in the starting state, obtaining the ambient temperature, the altitude, the outlet water temperature, the rotating speed of the engine and the injection amount per cycle of the engine in real time.

[0055] Specifically, whether the engine is in the starting state can be detected by detecting whether the rotating speed of the engine is greater than a preset value. ​

[0056] In other embodiments, if the engine is not detected to be in the starting state, the state of the cooling system is not identified.

[0057] It can be understood that the heat dissipation capacity of the cooling system is affected by the ambient temperature and the altitude, and the heat dissipation capacity decreases as the ambient temperature increases and as the altitude increases. The outlet water temperature refers to the outlet water temperature of the cooling liquid, and the outlet water temperature threshold is determined based on the engine speed and the injection amount per cycle in the bench development and the heat balance experiment in the embodiments of the present application. The thermostat is a valve for controlling the flow path of the cooling liquid and can automatically adjust the temperature. The thermostat usually contains a temperature sensing component and opens or closes the flow of the liquid by thermal expansion or thermal contraction.

[0058] S130, determining a first preset outlet water temperature threshold based on the engine speed and the injection amount per cycle according to the first experimental ambient temperature, the first experimental outlet water temperature and the first experimental altitude during the bench development, so as to determine a first calculated outlet water temperature threshold.

[0059] In the bench development, the vehicle is in an unloaded state. When the vehicle is in the unloaded state, the injection amount per cycle increases as the engine speed increases.

[0060] S140, determining a second preset outlet water temperature threshold based on the engine speed and the injection amount per cycle according to the second experimental ambient temperature and the second experimental outlet water temperature during the heat balance experiment, so as to determine a second calculated outlet water temperature threshold.

[0061] In the heat balance experiment, the vehicle is in a loaded state. When the vehicle is in the loaded state, the injection amount per cycle increases as the engine speed increases, but when the engine speed increases to a preset speed, the injection amount per cycle no longer increases.

[0062] S150, determining an actual outlet water temperature threshold of the engine according to the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold.

[0063] S160, comparing the real-time acquired outlet water temperature with the actual outlet water temperature threshold.

[0064] S170, if the real-time acquired outlet water temperature is greater than or equal to the actual outlet water temperature threshold, determining that the cooling system of the engine is in an abnormal state.

[0065] The embodiments of the present application can monitor the water temperature of the engine, which can avoid the problems of increased fuel consumption and low oil temperature caused by long-time low water temperature operation of the cooling system in an abnormal state. Since the actual outlet water temperature threshold provided by the embodiments of the present application comprehensively considers the outlet water temperature thresholds in the bench development and the heat balance experiment, the state identification of the cooling system is more accurate and can better meet the actual use requirements.

[0066] Figure 2 Another flowchart of a state identification method of a cooling system is provided in the embodiments of the present application, referring to Figure 2 The method comprises the following steps:

[0067] S210, obtaining the running state of the engine.

[0068] S220, if it is detected that the engine is in a starting state, obtaining the ambient temperature, the altitude, the water outlet temperature, the engine speed and the injection amount per cycle of the engine in real time.

[0069] S230, determining a first preset water outlet temperature threshold based on the engine speed and the injection amount per cycle according to the first experimental ambient temperature, the first experimental water outlet temperature and the first experimental altitude during the bench development, so as to determine a first calculated water outlet temperature threshold.

[0070] During the bench development, the vehicle is in an empty load state.

[0071] S240, determining a second preset water outlet temperature threshold based on the engine speed and the injection amount per cycle according to the second experimental ambient temperature and the second experimental water outlet temperature during the thermal equilibrium experiment, so as to determine a second calculated water outlet temperature threshold.

[0072] During the thermal equilibrium experiment, the vehicle is in a load state.

[0073] S250, determining the actual water outlet temperature threshold of the engine according to the first calculated water outlet temperature threshold and the second calculated water outlet temperature threshold.

[0074] S260, comparing the real-time obtained water outlet temperature with the actual water outlet temperature threshold.

[0075] S270, if the real-time obtained water outlet temperature is greater than or equal to the actual water outlet temperature threshold, determining that the cooling system of the engine is in an abnormal state.

[0076] Optionally, step S270 comprises: if the real-time obtained water outlet temperature is greater than or equal to the actual water outlet temperature threshold and lasts for a first preset time, determining that the cooling system of the engine is in an abnormal state and performing a low water temperature alarm.

[0077] Optionally, on the basis of the above-mentioned embodiments, step S220 comprises:

[0078] S221, detecting that the engine speed is greater than a preset speed and lasts for a preset time.

[0079] It can be understood that if the engine speed is detected to be greater than the preset speed and lasts for the preset time, it indicates that the engine is in a starting state and remains in the starting state.

[0080] In other embodiments, if the engine speed is detected to be greater than the preset speed but for less than the preset time, the state of the cooling system is not identified.

[0081] S222, real-time acquisition of the ambient temperature, the altitude, the outlet water temperature, the engine speed and the engine injection per cycle.

[0082] For example, after the engine speed is detected to be greater than the preset speed for 30 minutes, it is determined that the engine is in the starting state, and at this time, the real-time acquisition of the ambient temperature, the altitude, the outlet water temperature, the engine speed and the engine injection per cycle is started, which can prepare for the identification of the state of the cooling system.

[0083] In the embodiments of the present application, after the engine speed is detected to be greater than the preset speed for the preset time, the real-time acquisition of the ambient temperature, the altitude, the outlet water temperature, the engine speed and the engine injection per cycle is performed, which is helpful to obtain stable data, thereby improving the stability and accuracy of the state identification of the cooling system.

[0084] Optionally, on the basis of the above-mentioned embodiments, the step S230 comprises:

[0085] S231, determining a first mapping diagram based on the engine speed and the injection per cycle according to the first experimental ambient temperature, the first experimental outlet water temperature and the first experimental altitude.

[0086] The first mapping diagram is a MAP diagram of the first experimental ambient temperature, the first experimental outlet water temperature and the first experimental altitude based on the engine speed and the injection per cycle.

[0087] S232, determining a first preset outlet water temperature threshold and an altitude coefficient according to the first mapping diagram and the real-time acquired altitude.

[0088] S233, determining a first calculated outlet water temperature threshold according to the first preset outlet water temperature threshold and the altitude coefficient.

[0089] Optionally, on the basis of the above-mentioned embodiments, the step S233 comprises: determining the first calculated outlet water temperature threshold as the product of the first preset outlet water temperature threshold and the altitude coefficient according to the first preset outlet water temperature threshold and the altitude coefficient.

[0090] In the embodiments of the present application, the influence of the altitude on the bench development experiment is considered when determining the first calculated outlet water temperature threshold, and the first calculated outlet water temperature threshold is determined as the product of the first preset outlet water temperature threshold and the altitude coefficient, which can make the state identification of the cooling system more suitable for the actual use requirements.

[0091] Optionally, on the basis of the above-mentioned embodiments, the step S240 comprises:

[0092] S241, determining a second mapping based on the engine speed and the injection amount per cycle according to the second experimental ambient temperature and the second experimental outlet water temperature.

[0093] The second mapping is a MAP of the second experimental ambient temperature and the second experimental outlet water temperature based on the engine speed and the injection amount per cycle.

[0094] S242, determining a second preset outlet water temperature threshold and an ambient temperature coefficient according to the second mapping and the real-time acquired ambient temperature.

[0095] S243, determining a second calculated outlet water temperature threshold according to the second preset outlet water temperature threshold and the ambient temperature coefficient.

[0096] In other embodiments, if the real-time acquired ambient temperature is less than 0℃, the ambient temperature coefficient is equal to 0, and in this case, the state of the cooling system is not identified.

[0097] Optionally, on the basis of the above embodiments, step S243 comprises:

[0098] The second calculated outlet water temperature threshold is the product of the second preset outlet water temperature threshold and the ambient temperature coefficient.

[0099] In the embodiments of the present application, the influence of the ambient temperature on the heat balance experiment is considered when determining the second calculated outlet water temperature threshold, and the second calculated outlet water temperature threshold is the product of the second preset outlet water temperature threshold and the ambient temperature coefficient, which can make the state identification of the cooling system more in line with the actual use requirements.

[0100] Optionally, on the basis of the above embodiments, step S250 comprises: determining the actual outlet water temperature threshold of the engine as the average of the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold.

[0101] The embodiment of the present application can monitor the water temperature of the engine, can avoid the problems of increased fuel consumption and low engine oil temperature caused by long time low water temperature operation of the cooling system in abnormal state, and since the actual outlet water temperature threshold provided by the embodiment of the present application comprehensively considers the outlet water temperature thresholds in two different situations of bench development and heat balance experiment. The first calculated outlet water temperature threshold is determined by considering the influence of altitude on the bench development experiment, and the first calculated outlet water temperature threshold is the product of the first preset outlet water temperature threshold and the altitude coefficient. The second calculated outlet water temperature threshold is determined by considering the influence of ambient temperature on the heat balance experiment, and the second calculated outlet water temperature threshold is the product of the second preset outlet water temperature threshold and the ambient temperature coefficient, so that the cooling system state recognition of the embodiment of the present application is more accurate and can better meet the actual use requirements.

[0102] Figure 3 A structural schematic diagram of a cooling system state recognition device provided by the embodiment of the present application is shown in Figure 3 The device comprises an engine state recognition module 310, a parameter acquisition module 320, a first calculated outlet water temperature threshold acquisition module 330, a second calculated outlet water temperature threshold acquisition module 340, an actual outlet water temperature threshold acquisition module 350 of the engine, and an outlet water temperature recognition module 360.

[0103] In the embodiment of the present application, the engine state recognition module 310 is used to acquire the running state of the engine. The parameter acquisition module 320 is used to acquire the ambient temperature, altitude, outlet water temperature, engine speed and engine per cycle injection amount in real time if the engine state recognition module detects that the engine is in a starting state. The first calculated outlet water temperature threshold acquisition module 330 is used to determine the first preset outlet water temperature threshold based on the engine speed and the per cycle injection amount according to the first experimental ambient temperature, the first experimental outlet water temperature and the first experimental altitude during bench development, so as to determine the first calculated outlet water temperature threshold; during bench development, the vehicle is in an empty load state. The second calculated outlet water temperature threshold acquisition module 340 is used to determine the second preset outlet water temperature threshold based on the engine speed and the per cycle injection amount according to the second experimental ambient temperature and the second experimental outlet water temperature during heat balance experiment, so as to determine the second calculated outlet water temperature threshold; during heat balance experiment, the vehicle is in a load state. The actual outlet water temperature threshold acquisition module 350 of the engine is used to determine the actual outlet water temperature threshold of the engine according to the first calculated outlet water temperature threshold and the second calculated outlet water temperature threshold. The outlet water temperature recognition module 360 is used to compare the real-time acquired outlet water temperature with the actual outlet water temperature threshold. The engine state recognition module 310 is also used to determine that the cooling system of the engine is in an abnormal state if the real-time acquired outlet water temperature is greater than or equal to the actual outlet water temperature threshold.

[0104] The state recognition device of the cooling system provided in the embodiments of the present application can execute the state recognition method of the cooling system provided in any of the embodiments of the present application, has the function modules and beneficial effects corresponding to the execution method, and the content not described in detail in the embodiments of the present application can be referred to the state recognition method of the cooling system provided in the above embodiments.

[0105] Figure 4 A structural schematic diagram of a state recognition device of a cooling system provided in the embodiments of the present application. The state recognition device of the cooling system is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframes, and other suitable computers. The state recognition device of the cooling system can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections, and relationships, and their functions, are merely examples and are not intended to limit the implementations of the present application described herein and / or claimed.

[0106] As shown in Figure 4 The state recognition device of the cooling system 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11, wherein the memory stores a computer program executable by the at least one processor. The processor 11 can execute various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the state recognition device of the cooling system 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0107] A plurality of components in the state recognition device of the cooling system 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the state recognition device of the cooling system 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunications networks.

[0108] The processor 11 can be various general and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the state identification method of the cooling system.

[0109] The embodiments of the present application also provide a vehicle comprising the state identification device of the cooling system provided by the above embodiments.

[0110] It should be understood that various forms of flow shown above can be used to reorder, add or delete steps. For example, each step described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0111] The above detailed description does not constitute a limitation on the scope of protection of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method of identifying a state of a cooling system, characterized by, The method comprises: acquiring an operating state of an engine; if it is detected that the engine is in a starting state, acquiring in real time an ambient temperature, an altitude, a water outlet temperature, a rotating speed of the engine and an injection amount per cycle of the engine; determining a first preset water outlet temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to a first experimental ambient temperature, a first experimental water outlet temperature and a first experimental altitude during bench development, so as to determine a first calculated water outlet temperature threshold; the vehicle is in an empty load state during the bench development; determining a second preset water outlet temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to a second experimental ambient temperature and a second experimental water outlet temperature during a thermal equilibrium experiment, so as to determine a second calculated water outlet temperature threshold; the vehicle is in a load state during the thermal equilibrium experiment; determining an actual water outlet temperature threshold of the engine according to the first calculated water outlet temperature threshold and the second calculated water outlet temperature threshold; comparing the real-time acquired water outlet temperature with the actual water outlet temperature threshold; if the real-time acquired water outlet temperature is greater than or equal to the actual water outlet temperature threshold, determining that a cooling system of the engine is in an abnormal state.

2. The state identification method of the cooling system according to claim 1, characterized by, The acquiring in real time the ambient temperature, the altitude, the water outlet temperature, the rotating speed of the engine and the injection amount per cycle of the engine if it is detected that the engine is in the starting state comprises: detecting that the rotating speed of the engine is greater than a preset rotating speed and lasts for a preset time; acquiring in real time the ambient temperature, the altitude, the water outlet temperature, the rotating speed of the engine and the injection amount per cycle of the engine.

3. The method of identifying a state of a cooling system according to claim 1, wherein The determining the first preset water outlet temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to the first experimental ambient temperature, the first experimental water outlet temperature and the first experimental altitude during the bench development, so as to determine the first calculated water outlet temperature threshold comprises: determining a first mapping based on the rotating speed and the injection amount per cycle of the engine according to the first experimental ambient temperature, the first experimental water outlet temperature and the first experimental altitude during the bench development; determining the first preset water outlet temperature threshold and an altitude coefficient according to the first mapping and the real-time acquired altitude; determining the first calculated water outlet temperature threshold according to the first preset water outlet temperature threshold and the altitude coefficient.

4. The method of identifying a state of a cooling system according to claim 3, wherein The determining the first calculated water outlet temperature threshold according to the first preset water outlet temperature threshold and the altitude coefficient comprises: determining the first calculated water outlet temperature threshold as a product of the first preset water outlet temperature threshold and the altitude coefficient according to the first preset water outlet temperature threshold and the altitude coefficient.

5. The method of identifying a state of a cooling system according to claim 1, wherein The determining the second preset water outlet temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to the second experimental ambient temperature and the second experimental water outlet temperature during the thermal equilibrium experiment, so as to determine the second calculated water outlet temperature threshold comprises: determining a second mapping based on the rotating speed and the injection amount per cycle of the engine according to the second experimental ambient temperature and the second experimental water outlet temperature during the thermal equilibrium experiment; determine the second preset water outlet temperature threshold and an ambient temperature coefficient according to the second mapping and the real-time acquired ambient temperature; determine the second calculated water outlet temperature threshold according to the second preset water outlet temperature threshold and the ambient temperature coefficient.

6. The method of identifying the state of the cooling system according to claim 5, wherein determining the second calculated water outlet temperature threshold according to the second preset water outlet temperature threshold and the ambient temperature coefficient includes: determining the second calculated water outlet temperature threshold as a product of the second preset water outlet temperature threshold and the ambient temperature coefficient according to the second preset water outlet temperature threshold and the ambient temperature coefficient.

7. The method of identifying a state of a cooling system according to claim 1, wherein determining the actual water outlet temperature threshold of the engine according to the first calculated water outlet temperature threshold and the second calculated water outlet temperature threshold includes: determining the actual water outlet temperature threshold of the engine as an average of the first calculated water outlet temperature threshold and the second calculated water outlet temperature threshold.

8. A state identification device for a cooling system, characterized in that: comprises: an engine state recognition module, configured to acquire a running state of an engine; a parameter acquisition module, configured to acquire, in real time, an ambient temperature, an altitude, a water outlet temperature, a rotating speed of the engine and an injection amount per cycle of the engine if the engine state recognition module detects that the engine is in a starting state; a first calculated water outlet temperature threshold acquisition module, configured to determine a first preset water outlet temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to a first experimental ambient temperature, a first experimental water outlet temperature and a first experimental altitude during bench development, so as to determine a first calculated water outlet temperature threshold; the vehicle is in an empty load state during the bench development; a second calculated water outlet temperature threshold acquisition module, configured to determine a second preset water outlet temperature threshold based on the rotating speed and the injection amount per cycle of the engine according to a second experimental ambient temperature and a second experimental water outlet temperature during a thermal equilibrium experiment, so as to determine a second calculated water outlet temperature threshold; the vehicle is in a load state during the thermal equilibrium experiment; an actual water outlet temperature threshold acquisition module of the engine, configured to determine the actual water outlet temperature threshold of the engine according to the first calculated water outlet temperature threshold and the second calculated water outlet temperature threshold; a water outlet temperature recognition module, configured to compare the real-time acquired water outlet temperature with the actual water outlet temperature threshold; the engine state recognition module is further configured to determine that a cooling system of the engine is in an abnormal state if the real-time acquired water outlet temperature is greater than or equal to the actual water outlet temperature threshold.

9. A state identification device of a cooling system, characterized by, The state recognition device of the cooling system comprises at least one processor and a memory in communication connection with the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the state recognition method of the cooling system in any one of claims 1-7.

10. A vehicle characterized by comprising: The state recognition device of the cooling system comprises at least one processor and a memory in communication connection with the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the state recognition method of the cooling system in any one of claims 1-7. The state recognition device of the cooling system comprises at least one processor and a memory in communication connection with the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the state recognition method of the cooling system in any one of claims 1-7.

Images