Anti-icing method, apparatus, device, and computer-readable storage medium

Abstract

This application discloses an anti-icing method, apparatus, device, and computer-readable storage medium, relating to the field of engine technology. The anti-icing method is applied to a methanol engine and includes the following steps: upon receiving an engine shutdown request, controlling the methanol engine to shut down; and injecting methanol fuel into the methanol engine. This application solves the technical problem of high cost in existing anti-icing methods.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to an anti-icing method, apparatus, device, and computer-readable storage medium. Background Technology

[0002] Because methanol has a low calorific value, a methanol engine needs to consume more methanol fuel to produce the same torque. At the same time, it produces a large amount of water vapor during operation, and a large amount of water vapor remains inside the engine after it is shut down.

[0003] In low ambient temperatures, as the temperature drops, the spark plugs in methanol engines can freeze, causing them to fail to ignite and making cold starts difficult. This can also cause the EGR valve (Exhaust Gas Recirculation Valve) to freeze, leading to EGR valve sticking and malfunction. Current anti-freezing technologies involve adding water jackets to critical components of the methanol engine to prevent condensation, but this increases hardware costs. In short, existing anti-icing methods are relatively expensive. Summary of the Invention

[0004] The main objective of this application is to provide an anti-icing method that addresses the technical problem of high cost in existing anti-icing methods.

[0005] To achieve the above objectives, in a first aspect, this application provides an anti-icing method applied to a methanol engine, the anti-icing method comprising the following steps:

[0006] Upon receiving an engine shutdown request, the methanol engine is shut down.

[0007] Methanol fuel is injected into the methanol engine.

[0008] According to the first aspect, the step of controlling the shutdown of the methanol engine includes:

[0009] Control the spark plugs of the methanol engine to stop ignition;

[0010] Close the exhaust brake valve of the methanol engine and open the exhaust gas recirculation valve of the methanol engine.

[0011] According to the first aspect, or any implementation of the first aspect above, the step of injecting methanol fuel into the methanol engine includes:

[0012] Obtain the water production mass and target methanol concentration of the previous working cycle of the methanol engine;

[0013] The target injection quantity of the methanol fuel is calculated based on the mass of water produced, the initial methanol concentration of the methanol fuel, and the target methanol concentration.

[0014] The target injection quantity of methanol fuel is injected into the methanol engine.

[0015] According to the first aspect, or any implementation of the first aspect above, the formula for calculating the target injection quantity is as follows:

[0016] M1 = Q * M2 / (SQ);

[0017] Wherein, M1 is the target injection quantity, M2 is the water production quantity, S is the initial methanol concentration of the methanol fuel, and Q is the target methanol concentration.

[0018] According to the first aspect, or any implementation of the first aspect above, the step of obtaining the water production mass and target methanol concentration of the previous working cycle of the methanol engine includes:

[0019] Obtain the mass of methanol burned in the previous working cycle of the methanol engine;

[0020] Based on the mass of methanol burned and the preset combustion calculation formula, the mass of water produced in the previous working cycle of the engine is calculated.

[0021] According to the first aspect, or any implementation of the first aspect above, the step of obtaining the water production mass and target methanol concentration of the previous working cycle of the methanol engine further includes:

[0022] Obtain the current ambient temperature of the methanol engine;

[0023] Based on the current ambient temperature, the target methanol concentration is obtained by querying a preset concentration mapping table.

[0024] According to the first aspect, or any implementation of the first aspect above, before the step of controlling the methanol engine to shut down after receiving the engine shutdown request, the method includes:

[0025] Obtain the current ambient temperature of the methanol engine;

[0026] After the current ambient temperature is lower than the preset low temperature threshold, the following steps are performed: Upon receiving an engine shutdown request, the methanol engine is controlled to shut down.

[0027] Secondly, this application provides an anti-icing device for use in a methanol engine, the anti-icing device comprising:

[0028] The shutdown module is used to control the methanol engine to shut down after receiving an engine shutdown request;

[0029] The injection quantity control module is used to obtain the water production mass and target methanol concentration of the methanol engine in the previous working cycle, and calculate the target injection quantity of the methanol fuel based on the water production mass, the initial methanol concentration of the methanol fuel and the target methanol concentration.

[0030] An injection module is used to inject the target amount of methanol fuel into the methanol engine.

[0031] According to the second aspect, the shutdown module is also used for:

[0032] Control the spark plugs of the methanol engine to stop ignition;

[0033] Close the exhaust brake valve of the methanol engine and open the exhaust gas recirculation valve of the methanol engine.

[0034] According to the second aspect, or any implementation of the second aspect above, the injection quantity control module is further configured to calculate the target injection quantity of the methanol fuel according to the calculation formula of the target injection quantity.

[0035] The formula for calculating the target injection quantity is as follows:

[0036] M1 = Q * M2 / (SQ);

[0037] Wherein, M1 is the target injection quantity, M2 is the water production quantity, S is the initial methanol concentration of the methanol fuel, and Q is the target methanol concentration.

[0038] According to the second aspect, or any implementation of the second aspect above, the injection quantity control module is also used for:

[0039] Obtain the mass of methanol burned in the previous working cycle of the methanol engine;

[0040] Based on the mass of methanol burned and the preset combustion calculation formula, the mass of water produced in the previous working cycle of the engine is calculated.

[0041] According to the second aspect, or any implementation of the second aspect above, the injection quantity control module is also used for:

[0042] Obtain the current ambient temperature of the methanol engine;

[0043] Based on the current ambient temperature, the target methanol concentration is obtained by querying a preset concentration mapping table.

[0044] According to the second aspect, or any implementation of the second aspect above, the anti-icing device further includes a temperature detection module, used for:

[0045] Obtain the current ambient temperature of the methanol engine;

[0046] After the current ambient temperature is lower than the preset low temperature threshold, the following steps are performed: Upon receiving an engine shutdown request, the methanol engine is controlled to shut down.

[0047] Thirdly, this application provides an anti-icing device, which includes a memory and a processor. The memory stores a computer program that can run on the processor, and the computer program is configured to implement the steps of the anti-icing method described above.

[0048] Fourthly, this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to perform the anti-icing method as described in any one of the first aspects or possible implementations thereof.

[0049] Fifthly, embodiments of this application provide a computer program including instructions for executing the anti-icing method in the first aspect and any possible implementation thereof.

[0050] This application proposes an anti-icing method, apparatus, device, and computer-readable storage medium for use in methanol engines. Upon receiving an engine shutdown request, the method controls the methanol engine to shut down and injects methanol fuel into the engine. This application utilizes the principle that the melting point of an aqueous methanol solution is lower than that of water. During the engine shutdown process, a certain amount of methanol is injected into the engine cylinders to generate a methanol-water mixture vapor, which then condenses on the surface of internal engine components to form a methanol-water solution. By leveraging the lower melting point of methanol-water solution compared to water, icing is prevented from forming on components such as spark plugs and EGR valves within the methanol engine. Compared to adding water jackets to critical components of the methanol engine to prevent condensation, this application achieves anti-icing without requiring additional hardware, effectively reducing the hardware cost of anti-icing measures. Attached Figure Description

[0051] Figure 1 This is a flowchart illustrating the first embodiment of the anti-icing method of this application;

[0052] Figure 2 This is a flowchart illustrating the second embodiment of the anti-icing method of this application;

[0053] Figure 3 This is a flowchart illustrating the third embodiment of the anti-icing method of this application;

[0054] Figure 4 This is a schematic diagram of the anti-icing device of this application;

[0055] Figure 5This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of this application.

[0056] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0059] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0060] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0061] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0062] To more clearly describe the technical solution of the anti-freezing method of this application, the following description is based on some existing technologies:

[0063] Because methanol has a low calorific value, a methanol engine needs to consume more methanol fuel to produce the same torque. At the same time, it produces a large amount of water vapor during operation, and a large amount of water vapor remains inside the engine after it is shut down.

[0064] In low ambient temperatures, as the temperature drops, the spark plugs in methanol engines can freeze, causing them to fail to ignite and making cold starts difficult. This can also cause the EGR valve (Exhaust Gas Recirculation Valve) to freeze, leading to EGR valve sticking and malfunction. Current anti-freezing technologies involve adding water jackets to critical components of the methanol engine to prevent condensation, but this increases hardware costs. In short, existing anti-icing methods are relatively expensive.

[0065] This application utilizes the principle that the melting point of methanol aqueous solution is lower than that of water. During the shutdown process of the methanol engine, a certain amount of methanol is injected into the engine cylinder to generate methanol-water mixture vapor, which then condenses on the surface of the engine components to form a methanol aqueous solution. By taking advantage of the fact that the melting point of the methanol aqueous solution is lower than that of water, ice formation is prevented on components such as spark plugs and EGR valves within the methanol engine. Compared to adding water jackets to critical components of the methanol engine to prevent condensation, this application achieves anti-icing without requiring additional hardware, effectively reducing the hardware cost of anti-icing measures.

[0066] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the anti-icing method of this application. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here.

[0067] The first embodiment of this application provides an anti-icing method applied to a methanol engine, the anti-icing method comprising the following steps:

[0068] Step S100: After receiving the engine shutdown request, control the methanol engine to shut down;

[0069] In this embodiment, it should be noted that the methanol engine is an engine that uses methanol as fuel. The engine stop request is a request signal used to instruct the methanol engine to perform a stop operation. The engine stop request can be issued by the vehicle controller or by the user remotely through the server; this embodiment does not impose any restrictions on this.

[0070] As an example, this embodiment can stop fuel injection and control the spark plugs of the methanol engine to stop ignition after receiving an engine shutdown request. Furthermore, to prevent subsequent methanol fuel injected to prevent icing from being discharged from the exhaust valve, the exhaust brake valve of the methanol engine can also be closed. To prevent condensate on the outer side of the exhaust gas recirculation valve (i.e., EGR valve) from freezing, the exhaust gas recirculation valve of the methanol engine can also be opened.

[0071] In some embodiments, the step of controlling the methanol engine to shut down in step S100 includes:

[0072] Step S110: Control the spark plugs of the methanol engine to stop ignition;

[0073] Step S120: Close the exhaust brake valve of the methanol engine and open the exhaust gas recirculation valve of the methanol engine.

[0074] This embodiment stops the methanol engine by controlling the spark plugs to stop ignition after receiving an engine shutdown request. This allows the exhaust brake valve of the methanol engine to close, preventing subsequent methanol fuel injected for anti-icing purposes from being discharged from the exhaust valve. Simultaneously, the exhaust gas recirculation valve of the methanol engine is opened, allowing subsequent methanol fuel injected for anti-icing purposes to pass through the exhaust gas recirculation valve, preventing condensate on the outer side of the exhaust gas recirculation valve (EGR valve) from freezing. It is understood that steps S110 and S120 can be executed sequentially or simultaneously; this embodiment does not impose such restrictions.

[0075] In some embodiments, prior to the step of controlling the methanol engine to shut down after receiving an engine shutdown request, the method includes:

[0076] Step A10: Obtain the current ambient temperature of the methanol engine;

[0077] Step A20: After the current ambient temperature is lower than the preset low temperature threshold, the following step is executed: After receiving the engine shutdown request, the methanol engine is controlled to shut down.

[0078] In this embodiment, it should be noted that the preset low temperature threshold is a pre-set temperature value that will cause the internal components of the methanol engine to freeze, such as -5 degrees Celsius, -10 degrees Celsius, etc.

[0079] In this embodiment, it should also be noted that the current ambient temperature can be the ambient temperature at which the methanol engine is currently located.

[0080] This embodiment uses a temperature sensor to collect the current ambient temperature. It then determines whether the current ambient temperature is lower than a preset low-temperature threshold. If the current ambient temperature is lower than the preset low-temperature threshold, the following steps are executed: upon receiving an engine shutdown request, the methanol engine is shut down. Methanol fuel is then injected into the methanol engine. If the current ambient temperature is not lower than the preset low-temperature threshold, methanol fuel is not injected into the methanol engine, thus avoiding waste of methanol fuel.

[0081] Step S200: Inject methanol fuel into the methanol engine.

[0082] In this embodiment, it should be noted that the methanol fuel is the fuel for the methanol engine. The methanol fuel can be 100% pure methanol, or it can be a methanol solution of other concentrations, such as 85% or 90%.

[0083] This embodiment injects a preset amount of methanol fuel into the methanol engine, wherein the preset injection amount is the amount injected to prevent icing of internal engine components. At this time, the methanol fuel and water vapor generated in the previous working cycle of the methanol engine form a mixed vapor of methanol and water inside the cylinder. This mixed vapor then condenses on the surface of the internal engine components to form a methanol-water solution. Therefore, this embodiment utilizes the characteristic that the melting point of the methanol-water solution is lower than that of water to prevent icing of components such as spark plugs and EGR valves within the methanol engine. Compared to adding water jackets to key components of the methanol engine to prevent condensation, this application achieves anti-icing without adding new hardware, effectively reducing the hardware cost of anti-icing measures.

[0084] As another embodiment, to more precisely control the injection amount of methanol fuel, this embodiment can obtain the water production mass and target methanol concentration of the methanol engine in the previous working cycle; then, based on the water production mass, the initial methanol concentration of the methanol fuel, and the target methanol concentration, the target injection amount of methanol fuel is calculated; and the methanol fuel of the target injection amount is injected into the methanol engine. This ensures that the concentration of the methanol-water solution condensed on the surface of the components inside the methanol engine reaches the target methanol concentration, ensuring anti-icing effect while precisely controlling the injection amount of methanol fuel and avoiding methanol fuel waste.

[0085] The first embodiment of this application provides an anti-icing method applied to a methanol engine. Upon receiving an engine shutdown request, the methanol engine is shut down; methanol fuel is then injected into the engine. This embodiment utilizes the principle that the melting point of an aqueous methanol solution is lower than that of water. During the engine shutdown process, a certain amount of methanol is injected into the engine cylinder, generating a methanol-water mixture vapor. This vapor then condenses on the surface of internal engine components, forming a methanol-water solution. By leveraging the lower melting point of methanol-water solution compared to water, icing is prevented from forming on components such as spark plugs and EGR valves within the methanol engine. Compared to adding water jackets to critical components of the methanol engine to prevent condensation, this embodiment achieves anti-icing without requiring additional hardware, effectively reducing the hardware cost of anti-icing measures.

[0086] Reference Figure 2 , Figure 2 This is a flowchart illustrating the second embodiment of the anti-icing method of this application.

[0087] In another embodiment of this application, content that is the same as or similar to the above embodiment can be referred to the above description, and will not be repeated hereafter. A second embodiment of this application provides an anti-icing method, wherein the step of injecting methanol fuel into the methanol engine in step S200 includes:

[0088] Step S210: Obtain the water production mass and target methanol concentration of the methanol engine in the previous working cycle;

[0089] Step S220: Calculate the target injection quantity of the methanol fuel based on the mass of water produced, the initial methanol concentration of the methanol fuel, and the target methanol concentration.

[0090] Step S230: Inject the target injection amount of methanol fuel into the methanol engine.

[0091] In this embodiment, it should be noted that the previous working cycle is the last working cycle before the methanol engine stops. The target methanol concentration can be a pre-set fixed methanol concentration; or it can be the methanol concentration corresponding to the current ambient temperature of the methanol engine. The target methanol concentration is negatively correlated with the current ambient temperature, that is, the lower the current ambient temperature, the higher the target methanol concentration.

[0092] In this embodiment, it should also be noted that the mass of water produced is the mass of water produced after the methanol fuel injected into the methanol engine in the previous working cycle is burned.

[0093] This embodiment obtains the water production mass and target methanol concentration of the methanol engine in the previous working cycle. Then, based on the water production mass, the initial methanol concentration of the methanol fuel, and the target methanol concentration, the target injection quantity of the methanol fuel is calculated. The target injection quantity is the injection quantity at which the methanol fuel of the target injection quantity is mixed with the water produced mass, resulting in a methanol-water solution with the target methanol concentration. The methanol fuel of the target injection quantity is then injected into the methanol engine, thereby ensuring that the concentration of the methanol-water solution condensed on the surface of the engine components reaches the target methanol concentration. This ensures anti-icing effects while precisely controlling the methanol fuel injection quantity, avoiding methanol fuel waste.

[0094] The formula for calculating the target injection quantity is as follows:

[0095] M1 = Q * M2 / (SQ);

[0096] Wherein, M1 is the target injection quantity, M2 is the water production quantity, S is the initial methanol concentration of the methanol fuel, and Q is the target methanol concentration.

[0097] The step S210, which involves obtaining the water production mass and target methanol concentration of the methanol engine in the previous operating cycle, includes:

[0098] Step S211: Obtain the mass of methanol burned in the previous working cycle of the methanol engine;

[0099] Step S212: Calculate the mass of water produced in the previous working cycle of the engine based on the mass of methanol burned and the preset combustion calculation formula.

[0100] In this embodiment, it should be noted that the mass of methanol burned is the mass of methanol fuel burned by the methanol engine in the previous working cycle.

[0101] This embodiment obtains the mass of methanol burned in the previous working cycle of the methanol engine; then, based on the mass of methanol burned and a preset combustion calculation formula, the mass of water produced in the previous working cycle of the engine can be calculated. The preset combustion calculation formula describes the relationship between the mass of methanol fuel and the mass of water produced after combustion.

[0102] For example, the preset combustion calculation formula is as follows:

[0103] M2 = 72 * M3 / 64 = 1.125 * M3;

[0104] Wherein, M2 is the amount of water produced, and M3 is the mass of methanol burned.

[0105] The methanol reaction equation is: 2CH3OH + 3O2 = 2CO2 + 4H2O, where the relative molecular mass of methanol is 64, oxygen is 32, carbon dioxide is 44, and water is 18. Let the mass of methanol burned in the previous working cycle be M3 and the mass of water produced be M2, then M2 = 72 * M3 / 64 = 1.125 * M3.

[0106] In the second embodiment of this application, the mass of water produced and the target methanol concentration of the methanol engine in the previous working cycle are obtained. Then, based on the mass of water produced, the initial methanol concentration of the methanol fuel, and the target methanol concentration, the target injection amount of methanol fuel is calculated. The methanol fuel of the target injection amount is then injected into the methanol engine, thereby ensuring that the concentration of the methanol-water solution condensed on the surface of the engine components reaches the target methanol concentration. This ensures anti-icing effects while precisely controlling the injection amount of methanol fuel, avoiding methanol fuel waste.

[0107] Reference Figure 3 , Figure 3 This is a flowchart illustrating the third embodiment of the anti-icing method of this application.

[0108] In another embodiment of this application, content that is the same as or similar to the above embodiments can be referred to the above description, and will not be repeated hereafter. A third embodiment of this application provides an anti-icing method, which further includes, in the step of obtaining the water production mass and target methanol concentration of the methanol engine in the previous working cycle:

[0109] Step S213: Obtain the current ambient temperature of the methanol engine;

[0110] Step S214: Based on the current ambient temperature, query the preset concentration mapping table to obtain the target methanol concentration.

[0111] In this embodiment, it should be noted that the preset concentration mapping table is a chart that pre-sets the mapping relationship between the current ambient temperature and the target methanol concentration. The target methanol concentration is negatively correlated with the current ambient temperature, that is, the lower the current ambient temperature, the higher the target methanol concentration.

[0112] This embodiment can acquire the current ambient temperature of the methanol engine using a temperature sensor; then, based on the current ambient temperature, a preset concentration mapping table can be consulted to obtain the target methanol concentration. Thus, this embodiment can obtain a target methanol concentration that matches the ambient temperature. For example, the freezing point of a 30% methanol-water solution is -26.1℃; the freezing point of a methanol-water solution is -35.7℃; and the freezing point of a 50% methanol-water solution is -43.9℃. When the current ambient temperature is -15℃, 30% can be selected as the target methanol concentration.

[0113] In the third embodiment of this application, the current ambient temperature of the methanol engine is obtained; based on the current ambient temperature, a preset concentration mapping table is consulted to obtain the target methanol concentration. Therefore, this embodiment can obtain a target methanol concentration that matches the ambient temperature, ensuring anti-icing effect while precisely controlling the methanol fuel injection amount and avoiding methanol fuel waste.

[0114] See Figure 4 , Figure 4 This is a schematic diagram of the anti-icing device of this application.

[0115] like Figure 4 As shown, this application provides an anti-icing device for use in a methanol engine, the anti-icing device comprising:

[0116] The shutdown module 10 is used to control the methanol engine to shut down after receiving an engine shutdown request;

[0117] The injection quantity control module 20 is used to obtain the water production mass and target methanol concentration of the methanol engine in the previous working cycle, and calculate the target injection quantity of the methanol fuel based on the water production mass, the initial methanol concentration of the methanol fuel and the target methanol concentration.

[0118] Injection module 30 is used to inject the target amount of methanol fuel into the methanol engine.

[0119] Optionally, the shutdown module 10 is also used for:

[0120] Control the spark plugs of the methanol engine to stop ignition;

[0121] Close the exhaust brake valve of the methanol engine and open the exhaust gas recirculation valve of the methanol engine.

[0122] Optionally, the injection quantity control module 20 is also used to calculate the target injection quantity of the methanol fuel according to the calculation formula of the target injection quantity;

[0123] The formula for calculating the target injection quantity is as follows:

[0124] M1 = Q * M2 / (SQ);

[0125] Wherein, M1 is the target injection quantity, M2 is the water production quantity, S is the initial methanol concentration of the methanol fuel, and Q is the target methanol concentration.

[0126] Optionally, the injection quantity control module 20 is also used for:

[0127] Obtain the mass of methanol burned in the previous working cycle of the methanol engine;

[0128] Based on the mass of methanol burned and the preset combustion calculation formula, the mass of water produced in the previous working cycle of the engine is calculated.

[0129] Optionally, the injection quantity control module 20 is also used for:

[0130] Obtain the current ambient temperature of the methanol engine;

[0131] Based on the current ambient temperature, the target methanol concentration is obtained by querying a preset concentration mapping table.

[0132] Optionally, the anti-icing device further includes a temperature detection module for:

[0133] Obtain the current ambient temperature of the methanol engine;

[0134] After the current ambient temperature is lower than the preset low temperature threshold, the following steps are performed: Upon receiving an engine shutdown request, the methanol engine is controlled to shut down.

[0135] The anti-icing device provided in this application employs the anti-icing methods described in the above embodiments, solving the technical problem of high cost in existing anti-icing methods. Compared with the prior art, the beneficial effects of the anti-icing device provided in this application are the same as those of the anti-icing methods provided in the above embodiments, and other technical features of the anti-icing device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0136] like Figure 5 As shown, Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of this application.

[0137] Specifically, the anti-icing device may be a vehicle controller, engine controller, PC (Personal Computer), tablet computer, portable computer, or server, etc.

[0138] like Figure 5 As shown, the anti-icing device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; the user interface 1003 may also include standard wired and wireless interfaces. Optionally, the network interface 1004 may include standard wired and wireless interfaces (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0139] Those skilled in the art will understand that Figure 5 The device structure shown does not constitute a limitation on the anti-icing device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0140] like Figure 5 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and computer programs.

[0141] exist Figure 5 In the device shown, the network interface 1004 is mainly used to connect to the backend server and communicate data with the backend server; the user interface 1003 is mainly used to connect to the client and communicate data with the client; and the processor 1001 can be used to call the computer program stored in the memory 1005 to implement the operation in the anti-icing method provided in the above embodiment.

[0142] Furthermore, this application also proposes a computer storage medium storing a computer program. When the computer program is executed by a processor, it implements the operations in the anti-icing method provided in the above embodiments. The specific steps will not be described in detail here.

[0143] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity / operation / object from another, and do not necessarily require or imply any such actual relationship or order between these entities / operations / objects; the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0144] For the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and relevant details can be found in the description of the method embodiments. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separate. Some or all of the modules can be selected according to actual needs to achieve the purpose of this application. Those skilled in the art can understand and implement this without creative effort.

[0145] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0146] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, television, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0147] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for preventing icing, characterized in that, Applied to methanol engines, the anti-icing method includes the following steps: Upon receiving an engine shutdown request, the methanol engine is shut down. Injecting methanol fuel into the methanol engine, wherein the step of injecting methanol fuel into the methanol engine includes: Obtain the water production mass and target methanol concentration of the previous working cycle of the methanol engine; calculate the target injection amount of the methanol fuel based on the water production mass, the initial methanol concentration of the methanol fuel, and the target methanol concentration; inject the methanol fuel of the target injection amount into the methanol engine, wherein the target methanol concentration is the methanol concentration of the methanol engine determined in a preset concentration mapping table based on the current ambient temperature of the methanol engine.

2. The anti-icing method as described in claim 1, characterized in that, The steps for controlling the shutdown of the methanol engine include: Control the spark plugs of the methanol engine to stop ignition; Close the exhaust brake valve of the methanol engine and open the exhaust gas recirculation valve of the methanol engine.

3. The anti-icing method as described in claim 1, characterized in that, The formula for calculating the target injection quantity is as follows: M1 = Q*M2 / (SQ; Wherein, M1 is the target injection quantity, M2 is the mass of water produced, S is the initial methanol concentration of the methanol fuel, and Q is the target methanol concentration.

4. The anti-icing method as described in claim 1, characterized in that, The step of obtaining the water production mass and target methanol concentration of the previous operating cycle of the methanol engine includes: Obtain the mass of methanol burned in the previous working cycle of the methanol engine; Based on the mass of methanol burned and the preset combustion calculation formula, the mass of water produced in the previous working cycle of the engine is calculated.

5. The anti-icing method as described in claim 1, characterized in that, The step of obtaining the water production mass and target methanol concentration of the previous operating cycle of the methanol engine further includes: Obtain the current ambient temperature of the methanol engine; Based on the current ambient temperature, the target methanol concentration is obtained by querying a preset concentration mapping table.

6. The anti-icing method according to any one of claims 1 to 5, characterized in that, Prior to the step of controlling the methanol engine to shut down after receiving an engine shutdown request, the procedure includes: Obtain the current ambient temperature of the methanol engine; After the current ambient temperature is lower than the preset low temperature threshold, the following steps are performed: Upon receiving an engine shutdown request, the methanol engine is controlled to shut down.

7. An anti-icing device, characterized in that, The anti-icing device, applied to methanol engines, includes: The shutdown module is used to control the methanol engine to shut down after receiving an engine shutdown request; The injection quantity control module is used to obtain the water production mass and target methanol concentration of the methanol engine in the previous working cycle, and calculate the target injection quantity of the methanol fuel based on the water production mass, the initial methanol concentration of the methanol fuel and the target methanol concentration. The target methanol concentration is the methanol concentration of the methanol engine determined in a preset concentration mapping table based on the current ambient temperature of the methanol engine. An injection module is used to inject a target amount of methanol fuel into the methanol engine.

8. The anti-icing device as described in claim 7, characterized in that, The injection quantity control module is also used to calculate the target injection quantity of the methanol fuel according to the calculation formula of the target injection quantity; The formula for calculating the target injection quantity is as follows: M1 = Q*M2 / (SQ; Wherein, M1 is the target injection quantity, M2 is the mass of water produced, S is the initial methanol concentration of the methanol fuel, and Q is the target methanol concentration.

9. The anti-icing device as described in claim 7, characterized in that, The injection quantity control module is also used for: Obtain the mass of methanol burned in the previous working cycle of the methanol engine; Based on the mass of methanol burned and the preset combustion calculation formula, the mass of water produced in the previous working cycle of the engine is calculated.

10. The anti-icing device as described in claim 7, characterized in that, The injection quantity control module is also used for: Obtain the current ambient temperature of the methanol engine; Based on the current ambient temperature, the target methanol concentration is obtained by querying a preset concentration mapping table.

11. The anti-icing device as described in claim 7, characterized in that, The anti-icing device also includes a temperature detection module for: Obtain the current ambient temperature of the methanol engine; After the current ambient temperature is lower than the preset low temperature threshold, the following steps are performed: Upon receiving an engine shutdown request, the methanol engine is controlled to shut down.

12. An anti-icing device, characterized in that, The anti-icing device includes: a memory and a processor, wherein the memory stores a computer program that can run on the processor, and the computer program, when executed by the processor, implements the steps of the anti-icing method as described in any one of claims 1 to 6.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the anti-icing method as described in any one of claims 1 to 6.

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