Method and device for processing EGR pipeline icing

Abstract

The application provides a method and device for processing EGR pipeline icing, and relates to the technical field of vehicles.In executing the method, when the engine starts, the EGR pipeline is first communicated with the exhaust pipe, then it is judged whether the EGR pipeline is iced, if the EGR pipeline is iced, the exhaust gas generated by the engine operation is used to de-ice the EGR pipeline;if the EGR pipeline is not iced, the EGR pipeline is communicated with the engine, and the EGR is started.In this way, if the EGR pipeline is iced, the exhaust gas generated by the engine operation is used to de-ice the EGR pipeline, since the EGR pipeline is communicated with the exhaust pipe, the moisture in the EGR pipeline will not enter the engine, thus, the working efficiency of the engine can be guaranteed not to be affected, and the ice in the EGR pipeline is removed.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method and apparatus for treating icing in EGR pipelines. Background Technology

[0002] Currently, light-duty vehicles meeting China VI b emission standards are equipped with high- and low-pressure EGR systems and utilize urea dual-injection technology. Especially for engines employing low-pressure EGR and urea dual-injection, the urea injection process results in a significant amount of moisture remaining in the low-pressure EGR lines. In winter or cold regions, after the engine is shut down, the temperature inside the EGR lines drops rapidly, causing the residual moisture to freeze. This freezing problem hinders exhaust gas recirculation, increasing pollutant emissions. Existing technology uses heating components to remove the ice from the lines, but after de-icing, a large amount of moisture enters the engine, reducing engine efficiency.

[0003] In conclusion, how to remove ice from the EGR pipeline while ensuring that the engine's working efficiency is not affected is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, this application provides a method and apparatus for treating ice buildup in EGR pipelines, which aims to remove ice from EGR pipelines while ensuring that the engine's operating efficiency is not affected.

[0005] In a first aspect, this application provides a method for treating icing in EGR pipelines, including:

[0006] When the engine is started, connect the EGR line to the exhaust pipe;

[0007] Determine if the EGR pipeline is frozen;

[0008] If the EGR line is frozen, the exhaust gas generated by the engine is used to de-ice the EGR line.

[0009] If the EGR line is not frozen, connect the EGR line to the engine and turn on the EGR.

[0010] Optionally, determining whether the EGR pipeline is frozen includes:

[0011] Obtain the first temperature value upstream of the EGR pipeline and the second temperature value downstream of the EGR pipeline, and calculate the first temperature difference between the upstream and downstream of the EGR pipeline;

[0012] Determine whether the first temperature difference is greater than the first threshold.

[0013] If so, the EGR pipeline is iced;

[0014] If not, then the EGR line is not frozen.

[0015] Optionally, before determining whether the first temperature difference is greater than the first threshold, the method further includes:

[0016] Obtain the ambient temperature;

[0017] Obtain the duration for which the engine has stopped running;

[0018] Determine whether the ambient temperature is less than the second threshold and the duration is greater than the third threshold;

[0019] If so, then proceed with the step of determining whether the first temperature difference is greater than the first threshold.

[0020] If not, then the EGR line is not frozen.

[0021] Optionally, after de-icing the EGR pipeline with the exhaust gas generated by the engine, the method further includes:

[0022] Obtain the third temperature value upstream of the EGR pipeline and the fourth temperature value downstream of the EGR pipeline, and calculate the second temperature difference between the upstream and downstream of the EGR pipeline;

[0023] Determine whether the second temperature difference is greater than the first threshold.

[0024] If so, then perform the step of de-icing the EGR pipeline using the exhaust gas generated by the engine operation;

[0025] If not, then proceed with the step of connecting the EGR line to the engine and starting the EGR.

[0026] Optionally, connecting the EGR line to the exhaust pipe includes:

[0027] The three-way valve is used to connect the EGR line to the exhaust pipe.

[0028] Optionally, connecting the EGR line to the engine includes:

[0029] The three-way valve is used to connect the EGR line to the engine.

[0030] Secondly, this application provides an apparatus for treating icing in EGR pipelines, comprising:

[0031] The first connection module is used to connect the EGR line to the exhaust pipe when the engine is started;

[0032] The first judgment module is used to determine whether the EGR pipeline is frozen;

[0033] A de-icing module is used to de-ice the EGR pipeline using the exhaust gas generated by the engine if the EGR pipeline is iced.

[0034] The second connection module is used to connect the EGR pipeline to the engine and start the EGR if the EGR pipeline is not frozen.

[0035] Optionally, the first determination module includes:

[0036] The first acquisition unit is used to acquire a first temperature value upstream of the EGR pipeline and a second temperature value downstream of the EGR pipeline, and calculate the first temperature difference between the upstream and downstream of the EGR pipeline.

[0037] The first judgment unit is used to determine whether the first temperature difference is greater than the first threshold; if yes, the EGR pipeline is frozen; if no, the EGR pipeline is not frozen.

[0038] Optionally, the first determination module further includes:

[0039] The second acquisition unit is used to acquire the ambient temperature;

[0040] The third acquisition unit is used to acquire the duration of the engine being stopped.

[0041] The second judgment unit is used to determine whether the ambient temperature is less than the second threshold and the duration is greater than the third threshold; if so, the step of judging whether the first temperature difference is greater than the first threshold is executed; if not, the EGR pipeline is not frozen.

[0042] Optionally, the device further includes:

[0043] The acquisition module is used to acquire the third temperature value upstream of the EGR pipeline and the fourth temperature value downstream of the EGR pipeline, and calculate the second temperature difference between the upstream and downstream of the EGR pipeline.

[0044] The second judgment module is used to determine whether the second temperature difference is greater than the first threshold; if so, the step of using the exhaust gas generated by the engine to de-ice the EGR pipeline is executed; if not, the step of connecting the EGR pipeline to the engine and turning on the EGR is executed.

[0045] Optionally, the first connectivity module includes:

[0046] The first control unit is used to control the three-way valve to connect the EGR pipeline to the exhaust pipe.

[0047] Optionally, the second connectivity module includes:

[0048] The second control module is used to control the three-way valve to connect the EGR pipeline to the engine.

[0049] Thirdly, this application provides a computer device including a memory and a processor, the memory being used to store instructions or code, and the processor being used to execute the instructions or code to cause the computer device to perform the EGR pipeline icing treatment method described in any of the first aspects above.

[0050] Fourthly, this application provides a computer storage medium storing code, wherein when the code is executed, a device executing the code implements the EGR pipeline icing treatment method described in any of the first aspects above.

[0051] This application provides a method for dealing with icing in the EGR pipe. When the engine is started, the EGR pipe is first connected to the exhaust pipe. Then, it is determined whether the EGR pipe is iced. If the EGR pipe is iced, the exhaust gas generated by the engine is used to defrost it. If the EGR pipe is not iced, the EGR pipe is connected to the engine, and the EGR function is activated. In this way, if the EGR pipe is icy, the exhaust gas generated by the engine is used to defrost it. Because the EGR pipe is connected to the exhaust pipe, moisture in the EGR pipe will not enter the engine. Thus, the engine's operating efficiency is not affected while the ice in the EGR pipe is removed. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings used in the description of the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A flowchart illustrating a method for handling icing in an EGR pipeline, provided as an embodiment of this application;

[0054] Figure 2 This is a schematic diagram of the EGR pipeline bypass provided in an embodiment of this application;

[0055] Figure 3 A flowchart illustrating another method for handling EGR pipeline icing provided in this application embodiment;

[0056] Figure 4 A flowchart illustrating another method for handling EGR pipeline icing provided in this application embodiment;

[0057] Figure 5 A schematic diagram of a device for treating icing in an EGR pipeline provided in an embodiment of this application;

[0058] Figure 6 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0059] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. This application provides a method and apparatus for treating icing in EGR pipelines, relating to the field of vehicle technology. The above are merely examples and do not limit the application field of the methods and apparatus provided in this application.

[0060] Currently, light-duty vehicles meeting China VI b emission standards are equipped with high- and low-pressure EGR systems and utilize urea dual-injection technology. Especially for engines employing low-pressure EGR and urea dual-injection, the urea injection process results in a significant amount of moisture remaining in the low-pressure EGR lines. In winter or cold regions, after the engine is shut down, the temperature inside the EGR lines drops rapidly, causing the residual moisture to freeze. This freezing problem hinders exhaust gas recirculation, increasing pollutant emissions. Existing technology uses heating components to remove the ice from the lines, but after de-icing, a large amount of moisture enters the engine, reducing engine efficiency.

[0061] The inventors, through research, proposed the technical solution of this application. When the engine starts, the EGR line is first connected to the exhaust pipe. Then, it is determined whether the EGR line is iced. If the EGR line is iced, the exhaust gas generated by the engine is used to defrost the EGR line. If the EGR line is not iced, the EGR line is connected to the engine, and the EGR is activated. In this way, if the EGR line is iced, the exhaust gas generated by the engine is used to defrost it. Because the EGR line is connected to the exhaust pipe, moisture in the EGR line will not enter the engine. Thus, the engine's working efficiency is not affected while the ice in the EGR line is removed.

[0062] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present application. It should be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of the present application can be combined with each other.

[0063] See Figure 1 , Figure 1 A flowchart of a method for handling EGR pipeline icing provided in this application embodiment includes:

[0064] S101: Connect the EGR line to the exhaust pipe when the engine is started.

[0065] EGR refers to Exhaust Gas Recirculation in the engine system. Applying EGR technology can effectively reduce nitrogen oxide emissions from the engine.

[0066] When the engine starts, its temperature rises, and the high-temperature exhaust gases produced by the engine enter the EGR line. If the EGR line is frozen, the ice will melt and produce a large amount of water. If this water enters the engine, it will affect the engine's efficiency. Therefore, when starting the engine, connect the EGR line to the exhaust pipe to prevent water from entering the engine and thus avoid affecting its efficiency.

[0067] One method for connecting the EGR line to the exhaust pipe is to control a three-way valve to connect the EGR line to the exhaust pipe. For example... Figure 2 As shown, Figure 2 The schematic diagram of the EGR pipeline bypass provided in this application embodiment includes a three-way valve 210, an EGR pipeline 220, an exhaust pipe pipeline 230, and an engine pipeline 240. When the engine is started, the three-way valve 210 is placed at points B and C. At this time, the EGR pipeline 220 is connected to the exhaust pipe pipeline 230, but the EGR pipeline 220 is not connected to the engine pipeline 240. In this way, water will not enter the engine, that is, it will not affect the working efficiency of the engine.

[0068] S102: Determine if the EGR pipeline is frozen.

[0069] Determine if the EGR pipeline is frozen.

[0070] If the EGR pipeline is frozen, proceed to step S104;

[0071] If the EGR line is not frozen, proceed to step S103.

[0072] S103: Connect the EGR line to the engine and turn on the EGR.

[0073] Since the EGR line will not freeze if the ice melts and generates a lot of water, the EGR line can be directly connected to the engine and the EGR can be turned on.

[0074] One method for connecting the EGR line to the engine is to control a three-way valve to connect the EGR line to the engine. For example... Figure 2 As shown, Figure 2 The schematic diagram of EGR pipeline bypass provided in the embodiment of this application includes a three-way valve 210, an EGR pipeline 220, an exhaust pipeline 230, and an engine pipeline 240. If there is no ice in the EGR pipeline 220, the three-way valve 210 is placed at points A and C. At this time, the EGR pipeline 220 is connected to the engine pipeline 240, and the EGR can be directly turned on.

[0075] S104: Uses exhaust gases generated by engine operation to de-ice the EGR pipeline.

[0076] The engine produces a large amount of high-temperature exhaust gas. When the high-temperature exhaust gas passes through the EGR pipe, it melts the ice in the EGR pipe. Since the EGR pipe is connected to the exhaust pipe, the large amount of water generated by the melting ice will be directly discharged from the exhaust pipe. That is, the water will not enter the engine and will not affect the engine's working efficiency.

[0077] In this embodiment, when the engine starts, the EGR line is first connected to the exhaust pipe. Then, it is determined whether the EGR line is iced. If the EGR line is iced, the exhaust gas generated by the engine is used to defrost the EGR line. If the EGR line is not iced, the EGR line is connected to the engine, and the EGR is activated. Thus, if the EGR line is iced, the exhaust gas generated by the engine is used to defrost it. Because the EGR line is connected to the exhaust pipe, moisture in the EGR line will not enter the engine. Therefore, the engine's operating efficiency is not affected while the ice in the EGR line is removed.

[0078] See Figure 3 , Figure 3 A flowchart of another method for handling EGR pipeline icing provided in this application embodiment includes:

[0079] The implementation methods of step S301 and step S101 are the same, and will not be described again here.

[0080] S302: Obtain the temperature values ​​upstream and downstream of the EGR pipeline, and calculate the temperature difference between the upstream and downstream of the EGR pipeline.

[0081] The temperature values ​​upstream and downstream of the EGR pipeline are obtained separately. The difference between the two temperature values ​​is the temperature difference between the upstream and downstream of the EGR pipeline. Under the action of a large amount of high-temperature exhaust gas generated by the engine, the temperature of the EGR pipeline will rise. If the EGR pipeline freezes, the temperature upstream of the EGR pipeline will be very high while the temperature downstream of the EGR pipeline will be very low.

[0082] S303: Determine whether the temperature difference is greater than the first threshold.

[0083] Determine whether the temperature difference is greater than a first threshold, where the first threshold is a preset value and the specific value depends on the specific situation.

[0084] If the temperature difference is greater than the first threshold, proceed to step S304;

[0085] If the temperature difference is not greater than the first threshold, proceed to step S305.

[0086] S304: Uses exhaust gases generated by engine operation to de-ice the EGR pipeline.

[0087] The engine produces a large amount of high-temperature exhaust gas. When the high-temperature exhaust gas passes through the EGR pipe, it melts the ice in the EGR pipe. Since the EGR pipe is connected to the exhaust pipe, the large amount of water generated by the melting ice will be directly discharged from the exhaust pipe. That is, the water will not enter the engine and will not affect the engine's working efficiency.

[0088] While performing step S304, continue to execute steps S302 and S303 until the temperature difference is no greater than the first threshold.

[0089] The implementation method of step S305 is the same as that of step S103, and will not be described again here.

[0090] See Figure 4 , Figure 4 A flowchart of another method for handling EGR pipeline icing provided in this application embodiment includes:

[0091] The implementation method of step S401 is the same as that of step S101, and will not be described again here.

[0092] S402: Obtain ambient temperature.

[0093] Obtain the temperature of the environment surrounding the vehicle.

[0094] S403: Get the duration the engine has been off.

[0095] Record the time when the engine stops running and the time when the engine starts running. Based on these two time points, the duration of engine shutdown can be obtained.

[0096] S404: Determine whether the ambient temperature is less than the second threshold and the duration is greater than the third threshold.

[0097] Both the second and third thresholds are preset values, and the specific values ​​depend on the specific circumstances. EGR lines may freeze only when the ambient temperature is below a certain value and the engine has been off for a certain duration.

[0098] If the ambient temperature is less than the second threshold and the duration is greater than the third threshold, then proceed to step S405;

[0099] If the ambient temperature is not less than the second threshold and / or the duration is not greater than the third threshold, then proceed to step S408.

[0100] The implementation method of step S405 is the same as that of step S302, the implementation method of step S406 is the same as that of step S303, the implementation method of step S407 is the same as that of step S304, and the implementation method of step S408 is the same as that of step S305, and will not be repeated here.

[0101] The above describes some specific implementations of a method for handling EGR pipeline icing according to embodiments of this application. Based on this, this application also provides a corresponding apparatus. The apparatus provided in the embodiments of this application will be described below from the perspective of functional modularity.

[0102] See Figure 5 As shown, Figure 5 This is a schematic diagram of a device for treating icing in an EGR pipeline, provided in an embodiment of this application. The device 500 for treating icing in an EGR pipeline includes:

[0103] The first connection module 510 is used to connect the EGR line to the exhaust pipe when the engine is started.

[0104] The first judgment module 520 is used to determine whether the EGR pipeline is frozen;

[0105] The de-icing module 530 is used to de-ic the EGR pipeline using the exhaust gas generated by the engine if the EGR pipeline is iced.

[0106] The second connection module 540 is used to connect the EGR pipeline to the engine and start the EGR if the EGR pipeline is not frozen.

[0107] Optionally, the first determination module 520 includes:

[0108] The first acquisition unit is used to acquire a first temperature value upstream of the EGR pipeline and a second temperature value downstream of the EGR pipeline, and calculate the first temperature difference between the upstream and downstream of the EGR pipeline.

[0109] The first judgment unit is used to determine whether the first temperature difference is greater than the first threshold; if yes, the EGR pipeline is frozen; if no, the EGR pipeline is not frozen.

[0110] Optionally, the first determination module 520 further includes:

[0111] The second acquisition unit is used to acquire the ambient temperature;

[0112] The third acquisition unit is used to acquire the duration of the engine being stopped.

[0113] The second judgment unit is used to determine whether the ambient temperature is less than the second threshold and the duration is greater than the third threshold; if so, the step of judging whether the first temperature difference is greater than the first threshold is executed; if not, the EGR pipeline is not frozen.

[0114] Optionally, the device 500 further includes:

[0115] The acquisition module is used to acquire the third temperature value upstream of the EGR pipeline and the fourth temperature value downstream of the EGR pipeline, and calculate the second temperature difference between the upstream and downstream of the EGR pipeline.

[0116] The second judgment module is used to determine whether the second temperature difference is greater than the first threshold; if so, the step of using the exhaust gas generated by the engine to de-ice the EGR pipeline is executed; if not, the step of connecting the EGR pipeline to the engine and turning on the EGR is executed.

[0117] Optionally, the first connectivity module 510 includes:

[0118] The first control unit is used to control the three-way valve to connect the EGR pipeline to the exhaust pipe.

[0119] Optionally, the second connectivity module 540 includes:

[0120] The second control module is used to control the three-way valve to connect the EGR pipeline to the engine.

[0121] This application also provides corresponding devices and computer storage media for implementing the solutions provided in this application.

[0122] like Figure 6 As shown, the computer device 01 is represented in the form of a general-purpose computing device. The components of the computer device 01 may include, but are not limited to: one or more processors or processing units 03, system memory 08, and bus 04 connecting different system components (including system memory 08 and processing unit 03).

[0123] Bus 04 represents one or more of several bus architectures, including memory buses or memory controllers, peripheral buses, graphics acceleration ports, processors, or local buses using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0124] Computer device 01 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by computer device 01, including volatile and non-volatile media, removable and non-removable media.

[0125] System memory 08 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 09 and / or cache memory 10. Computer device 01 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 11 may be used to read and write non-removable, non-volatile magnetic media (…). Figure 6 Not shown; usually referred to as a "hard drive"). Although Figure 6 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 04 via one or more data media interfaces. Memory 08 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0126] A program / utility 12 having a set (at least one) of program modules 13 may be stored in, for example, memory 08. Such program modules 13 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 13 typically perform the functions and / or methods described in the embodiments of the present invention.

[0127] Computer device 01 can also communicate with one or more external devices 02 (e.g., keyboard, pointing device, display 07, etc.), and with one or more devices that enable a user to interact with the computer device 01, and / or with any device that enables the computer device 01 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed through input / output (I / O) interface 06. Furthermore, computer device 01 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) through network adapter 05. Figure 6 As shown, network adapter 05 communicates with other modules of computer device 01 via bus 04. It should be understood that, although... Figure 6 As not shown in the diagram, it can be used in conjunction with computer device 01 with other hardware and / or software modules, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0128] The processor unit 03 executes various functional applications and data processing by running programs stored in the system memory 08, such as implementing a method for handling EGR pipeline icing provided in the embodiments of this application.

[0129] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0130] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the methods of the above embodiments can be implemented by means of software plus a general-purpose hardware platform. Based on this understanding, the technical solution of this application can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as a read-only memory (ROM) / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, a server, or a network communication device such as a router) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0131] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the apparatus embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0132] The above description is merely an exemplary implementation of this application and is not intended to limit the scope of protection of this application.

Claims

1. A method for treating icing in EGR pipelines, characterized in that, include: When the engine is started, connect the EGR line to the exhaust pipe; Determine if the EGR pipeline is frozen; If the EGR line is frozen, the exhaust gas generated by the engine is used to de-ice the EGR line. If the EGR line is not frozen, connect the EGR line to the engine and turn on the EGR. The determination of whether the EGR pipeline is frozen includes: Obtain the first temperature value upstream of the EGR pipeline and the second temperature value downstream of the EGR pipeline, and calculate the first temperature difference between the upstream and downstream of the EGR pipeline; Determine whether the first temperature difference is greater than the first threshold. If so, the EGR pipeline is iced; If not, then the EGR pipeline is not frozen; Before determining whether the first temperature difference is greater than the first threshold, the method further includes: Obtain the ambient temperature; Obtain the duration for which the engine has stopped running; Determine whether the ambient temperature is less than the second threshold and the duration is greater than the third threshold; If so, then proceed with the step of determining whether the first temperature difference is greater than the first threshold. If not, then the EGR line is not frozen.

2. The method according to claim 1, characterized in that, After de-icing the EGR pipeline using the exhaust gas generated by the engine, the method further includes: Obtain the third temperature value upstream of the EGR pipeline and the fourth temperature value downstream of the EGR pipeline, and calculate the second temperature difference between the upstream and downstream of the EGR pipeline; Determine whether the second temperature difference is greater than the first threshold. If so, then perform the step of de-icing the EGR pipeline using the exhaust gas generated by the engine operation; If not, then proceed with the step of connecting the EGR line to the engine and starting the EGR.

3. The method according to claim 1, characterized in that, Connecting the EGR pipeline to the exhaust pipe includes: The three-way valve is used to connect the EGR line to the exhaust pipe.

4. The method according to claim 1, characterized in that, Connecting the EGR line to the engine includes: The three-way valve is used to connect the EGR line to the engine.

5. A device for treating icing in EGR pipelines, characterized in that, The processing device uses the processing method described in any one of claims 1-4 to de-ice the EGR pipeline, and the device comprises: The first connection module is used to connect the EGR line to the exhaust pipe when the engine is started; The first judgment module is used to determine whether the EGR pipeline is frozen; A de-icing module is used to de-ice the EGR pipeline using the exhaust gas generated by the engine if the EGR pipeline is iced. The second connection module is used to connect the EGR line to the engine and start the EGR if the EGR line is not frozen. The first judgment module includes: The first acquisition unit is used to acquire a first temperature value upstream of the EGR pipeline and a second temperature value downstream of the EGR pipeline, and calculate the first temperature difference between the upstream and downstream of the EGR pipeline. The first judgment unit is used to determine whether the first temperature difference is greater than the first threshold; if yes, the EGR pipeline is frozen; if no, the EGR pipeline is not frozen. The first determination module further includes: The second acquisition unit is used to acquire the ambient temperature; The third acquisition unit is used to acquire the duration of the engine being stopped. The second judgment unit is used to determine whether the ambient temperature is less than the second threshold and the duration is greater than the third threshold; if so, the step of determining whether the first temperature difference is greater than the first threshold is executed; if not, the EGR pipeline is not frozen.

6. A computer device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method for treating EGR pipeline icing as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a terminal device, cause the terminal device to perform the EGR pipeline icing treatment method as described in any one of claims 1-4.

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