An EGR cooler carbon cleaning method, system, apparatus, and storage medium

Abstract

The application discloses an EGR cooler carbon deposition cleaning method, system, device and storage medium, and the method comprises the following steps: collecting real-time intake pressure and real-time exhaust pressure of the EGR cooler during vehicle driving; calculating a real-time pressure difference according to the real-time intake pressure and the real-time exhaust pressure; determining a carbon deposition amount trend according to the real-time pressure difference; and determining a carbon deposition cleaning mileage range according to the vehicle mileage, the real-time carbon deposition amount and the maximum limit of the carbon deposition amount when the carbon deposition amount trend is increasing. The application solves the problem that the user does not know how to clean the carbon deposition, and according to different vehicles and vehicle conditions, the time and place of cleaning the carbon deposition of the EGR cooler are predicted, the driver is reminded to clean the carbon deposition of the EGR cooler in advance, and the safety of driving is ensured.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and specifically to a method, system, device, and storage medium for cleaning carbon deposits from an EGR cooler. Background Technology

[0002] Exhaust gas recirculation (EGR) systems are primarily used to reduce the nitrogen oxide (NOx) content in engine exhaust gases. Since oxygen and nitrogen undergo a chemical reaction at high temperatures, some of the exhaust gases containing a large amount of carbon dioxide are sent back into the cylinder along with a fresh air-fuel mixture. Because carbon dioxide is non-combustible and has a high specific heat capacity, it absorbs a large amount of heat, lowering the maximum combustion temperature of the air-fuel mixture in the cylinder and thus reducing the nitrogen oxide content.

[0003] The EGR cooler cools a portion of the recirculated exhaust gas to lower the temperature of the exhaust gas entering the engine combustion chamber, further reducing the nitrogen oxide content. The recirculated exhaust gas contains a large amount of carbon particles, which easily adhere to the heat sink fins during EGR cooling, forming carbon deposits. This affects heat exchange efficiency. Excessive carbon deposits, due to poor heat exchange, significantly reduce the cooling efficiency of the EGR cooler, consequently impacting engine emissions. Summary of the Invention

[0004] The main objective of this invention is to provide a method, system, device, and storage medium for cleaning carbon deposits in an EGR cooler. This solves the problem of users not knowing the frequency of carbon deposit cleaning. Based on different vehicles and vehicle conditions, it predicts the time and location when the EGR cooler needs cleaning, promptly reminding drivers to clean the EGR cooler carbon deposits in advance, thus ensuring driving safety.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] According to a first aspect of the present application, a method for cleaning carbon deposits in an exhaust gas recirculation (EGR) cooler is provided, the method comprising:

[0007] Real-time intake and exhaust pressures of the EGR cooler are collected during vehicle operation.

[0008] Calculate the real-time pressure difference based on the real-time intake pressure and real-time exhaust pressure;

[0009] The trend of carbon deposit amount is determined based on the real-time pressure difference;

[0010] When the carbon deposits are increasing, the carbon cleaning mileage range is determined based on the vehicle's mileage, real-time carbon deposits, and maximum carbon deposit limit.

[0011] Optionally, determining the carbon deposit cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit includes:

[0012] The maximum mileage that the vehicle can travel under the current operating conditions to reach the maximum carbon buildup limit is calculated based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit.

[0013] The carbon deposit cleaning mileage range is determined based on the vehicle's mileage and the stated maximum mileage.

[0014] Optionally, the step of calculating the maximum mileage the vehicle must travel under current operating conditions to reach the maximum carbon buildup limit, based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit, is performed according to the following formula:

[0015] S max =(C max -C B ) / C AB *S1*k

[0016] Among them, C max The maximum carbon buildup limit is given by S1, where S1 is the mileage the vehicle has traveled from point one to point two, and C is the maximum carbon buildup limit. B C represents the amount of carbon deposits when the vehicle reaches the second location. AB The carbon deposit amount is from the first location to the second location, and k is the road operation correction factor.

[0017] Optionally, the maximum carbon deposit limit is determined based on the maximum pressure difference between the intake and exhaust of the EGR cooler; the carbon deposit amount when the vehicle reaches the second location is determined based on the difference between the intake and exhaust pressures of the EGR cooler at the second location; the carbon deposit amount from the first location to the second location is determined based on the difference between the carbon deposit amount at the second location and the carbon deposit amount at the first location, the carbon deposit amount at the first location is determined based on the pressure difference between the intake and exhaust pressures of the EGR cooler at the first location; and the carbon deposit amount at the second location is determined based on the pressure difference between the intake and exhaust pressures of the EGR cooler at the second location.

[0018] Optionally, determining the carbon deposit cleaning mileage range based on the vehicle's mileage and the maximum mileage further includes:

[0019] If the target mileage entered by the user is greater than or equal to the limit mileage, a carbon buildup warning message will be sent to the user.

[0020] Optionally, determining the carbon deposit trend based on the real-time pressure difference includes:

[0021] Calculate the corresponding real-time carbon deposit amount based on the real-time pressure difference;

[0022] Determine the first carbon deposit amount of the vehicle at the first location and the second carbon deposit amount at the second location;

[0023] The carbon deposition trend is determined to be increasing if the difference between the second carbon deposition amount and the first carbon deposition amount is greater than or equal to 0.

[0024] The carbon deposition trend is determined to be decreasing based on the fact that the difference between the second carbon deposition amount and the first carbon deposition amount is less than 0.

[0025] According to a second aspect of the embodiments of this application, an EGR cooler carbon deposit cleaning system is provided, characterized in that the system comprises:

[0026] The pressure acquisition module is used to collect the real-time intake and exhaust pressure of the EGR cooler during vehicle operation.

[0027] The pressure difference module is used to calculate the real-time pressure difference based on the real-time intake pressure and the real-time exhaust pressure.

[0028] A carbon deposit module is used to determine the carbon deposit trend based on the real-time pressure difference.

[0029] The cleaning mileage module is used to determine the carbon cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit when the carbon deposit amount trend increases.

[0030] Optionally, the mileage clearing module is specifically used for:

[0031] The maximum mileage that the vehicle can travel under the current operating conditions to reach the maximum carbon buildup limit is calculated based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit.

[0032] The carbon deposit cleaning mileage range is determined based on the vehicle's mileage and the stated maximum mileage.

[0033] According to a third aspect of the present application, an electronic device is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect above.

[0034] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided having computer-readable instructions stored thereon, the computer-readable instructions being executable by a processor to implement the method described in the first aspect above.

[0035] In summary, this application provides a method, system, device, and storage medium for cleaning carbon deposits from an EGR cooler. It involves collecting real-time intake and exhaust pressures of the EGR cooler during vehicle operation; calculating the real-time pressure difference based on these pressures; determining the carbon deposit trend based on the pressure difference; and determining the carbon deposit cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and a maximum carbon deposit limit when the carbon deposit trend is increasing. This solves the problem of users not knowing the appropriate frequency for carbon deposit cleaning. It predicts the time and location when EGR cooler carbon deposits need cleaning based on different vehicles and vehicle conditions, promptly reminding drivers to clean the EGR cooler carbon deposits in advance, thus ensuring driving safety. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0037] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0038] Figure 1 A schematic diagram of a carbon deposit cleaning method for an EGR cooler provided in this application embodiment;

[0039] Figure 2 The logic diagram for predicting EGR cooler carbon deposit removal provided in the embodiments of this application;

[0040] Figure 3 A block diagram of an EGR cooler carbon deposit cleaning system provided in this application embodiment;

[0041] Figure 4 This illustration shows a structural schematic diagram of an electronic device provided in an embodiment of this application;

[0042] Figure 5 A schematic diagram of a computer-readable storage medium provided in an embodiment of this application is shown.

[0043] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0046] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0049] First, the relevant terms used in the embodiments of this application will be explained:

[0050] Exhaust Gas Recirculation (EGR) system: A technology that redirects a portion of the exhaust gases after engine combustion to the intake side for re-intake. Its main purpose is to reduce the nitrogen oxide content in the exhaust gases and improve fuel economy under partial load.

[0051] EGR cooler: It is a water-cooled heat exchanger whose main function is to further reduce the temperature of the exhaust gas participating in the recirculation, thereby reducing the in-cylinder combustion temperature and reducing the amount of nitrogen oxides generated.

[0052] EGR cooler carbon deposits: refers to the substances that accumulate on the surface of the heat exchange components of the cooler, mainly composed of dry carbon soot and hydrocarbons.

[0053] Existing technology has an alarm device on the EGR cooler to clean carbon deposits. However, this method only provides an alert when the EGR cooler no longer meets the conditions for continued driving. When the vehicle is on the highway or carrying out important transportation work, it cannot clean carbon deposits in time, which affects engine performance, resulting in high fuel consumption, high emissions, and affecting the overall vehicle operating efficiency.

[0054] Figure 1 This application illustrates a method for cleaning carbon deposits in an exhaust gas recirculation (EGR) cooler, the method comprising:

[0055] Step 101: Collect real-time intake and exhaust pressures of the EGR cooler during vehicle operation;

[0056] Step 102: Calculate the real-time pressure difference based on the real-time intake pressure and real-time exhaust pressure;

[0057] Step 103: Determine the carbon deposit trend based on the real-time pressure difference;

[0058] Step 104: When the carbon deposit amount is increasing, determine the carbon deposit cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit.

[0059] In one possible implementation, step 103, determining the carbon deposit trend based on the real-time pressure difference, includes:

[0060] The real-time carbon deposit amount is calculated based on the real-time pressure difference; the first carbon deposit amount at the first location and the second carbon deposit amount at the second location are determined; if the difference between the second carbon deposit amount and the first carbon deposit amount is greater than or equal to 0, the carbon deposit amount trend is determined to be increasing; if the difference between the second carbon deposit amount and the first carbon deposit amount is less than 0, the carbon deposit amount trend is determined to be decreasing.

[0061] In one possible implementation, step 104, determining the carbon deposit cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit, includes:

[0062] Calculate the maximum mileage the vehicle must travel under current operating conditions to reach the maximum carbon buildup limit based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit; determine the carbon buildup cleaning mileage range based on the vehicle's mileage and the maximum mileage limit.

[0063] In one possible implementation, the calculation of the maximum mileage the vehicle must travel under current operating conditions to reach the maximum carbon buildup limit, based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit, is performed according to the following formula:

[0064] S max =(C max -C B ) / C AB *S1*k

[0065] Among them, C max The maximum carbon buildup limit is given by S1, where S1 is the mileage the vehicle has traveled from point one to point two, and C is the maximum carbon buildup limit. B C represents the amount of carbon deposits when the vehicle reaches the second location. AB The carbon deposit amount is from the first location to the second location, and k is the road operation correction factor.

[0066] In one possible implementation, the maximum carbon deposit amount is determined based on the maximum pressure difference between the intake and exhaust of the EGR cooler; the carbon deposit amount when the vehicle reaches the second location is determined based on the difference between the intake and exhaust pressures of the EGR cooler at the second location; the carbon deposit amount from the first location to the second location is determined based on the difference between the carbon deposit amount at the second location and the carbon deposit amount at the first location, the carbon deposit amount at the first location is determined based on the pressure difference between the intake and exhaust pressures of the EGR cooler at the first location; and the carbon deposit amount at the second location is determined based on the pressure difference between the intake and exhaust pressures of the EGR cooler at the second location.

[0067] In one possible implementation, determining the carbon deposit cleaning mileage range based on the vehicle's mileage and the maximum mileage further includes:

[0068] If the target mileage entered by the user is greater than or equal to the limit mileage, a carbon buildup warning message will be sent to the user.

[0069] Based on the vehicle's current driving conditions and the amount of carbon buildup in the EGR cooler, if the carbon buildup gradually increases during driving, the system can predict the mileage the vehicle can continue to travel under similar conditions. It can also determine whether to promptly remind the user to clean the EGR cooler based on the user's actual mileage. If the carbon buildup in the EGR cooler decreases during driving, the system can continue operating under similar conditions without mileage prediction or reminders to clean the EGR cooler. Data from different routes and driving conditions can be recorded and predicted, allowing users to check at any time whether carbon cleaning is needed before departure for different routes.

[0070] The following is combined with Figure 2 The illustrated logic diagram for predicting EGR cooler carbon deposit removal provided in this application embodiment is used to explain the method provided in this application embodiment in detail.

[0071] Phase 1: Obtain the relationship between the pressure difference between the cooler's inlet and outlet and the amount of carbon deposits.

[0072] Intake pressure sensor a and exhaust pressure sensor b are installed at the intake and exhaust ports of the EGR cooler, respectively. During engine operation, the intake and exhaust pressures of the EGR cooler can be collected, and the intake and exhaust pressure difference ΔP of the EGR cooler can be obtained.

[0073] The functional model of the EGR cooler intake and exhaust pressure difference ΔP and the carbon deposit amount C of the EGR cooler was obtained through experiments, as shown below:

[0074] C = f(△P)

[0075] In the formula, ΔP is the intake and exhaust pressure difference of the EGR cooler, and C is the amount of carbon deposits in the EGR cooler.

[0076] Second stage: Calculate the amount of carbon deposits during this trip based on the pressure difference, according to the driving conditions.

[0077] If a vehicle travels from point A to point B, covering a distance of S1 kilometers, the intake pressure P1 and exhaust pressure P2 of the EGR cooler can be recorded when the vehicle departs from point A, thus obtaining the pressure difference ΔP. A =P1-P2. Similarly, the EGR cooler intake pressure P3 and exhaust pressure P4 when the vehicle reaches point B, and the pressure difference ΔP, can be obtained. B =P3-P4.

[0078] Where △P A ≤△P max , △P B ≤△P max , △P AB =△P B -△P A △P maxThis indicates the maximum intake and exhaust pressure difference of the EGR cooler when the carbon buildup reaches its maximum limit; △P AB This represents the pressure difference value corresponding to the vehicle traveling S1 kilometers from point A to point B.

[0079] The amount of carbon deposits is calculated using the following formula:

[0080] C AB =C B -C A =f(△P) B )-f(△P A )

[0081] Among them, C B The amount of carbon buildup in the EGR cooler when the vehicle is in location B; C A C represents the amount of carbon buildup in the EGR cooler of the vehicle at location A; AB C represents the amount of carbon buildup in the EGR cooler during vehicle operation from location A to location B; A ≤C max C B ≤C max C max This is the maximum limit for carbon buildup in the EGR cooler.

[0082] If C AB A value greater than 0 indicates an increase in carbon buildup in the EGR cooler during the journey from location A to location B.

[0083] If C AB <0 indicates a reduction in carbon buildup in the EGR cooler during the journey from location A to location B.

[0084] The third stage involves predicting the vehicle's remaining driving range when carbon deposits increase.

[0085] If C AB If the value is greater than 0, and the vehicle continues to operate under similar stable conditions, the predicted mileage that the vehicle can continue to run until the carbon buildup in the EGR cooler reaches the limit can be calculated using the following formula:

[0086] S max =(C max -C B ) / C AB *S1*k=(f(△P max )-f(△P B )) / C AB *S1*k

[0087] Among them, S max The maximum mileage a vehicle can continue to operate when the carbon buildup in the EGR cooler reaches its maximum limit; k is the road operation correction factor.

[0088] If C AB<0, the amount of carbon deposits in the EGR cooler is decreasing. If similar operating conditions continue, there is no need to predict the mileage or remind the user to clean the carbon deposits in the EGR cooler.

[0089] In the fourth stage, based on the predicted remaining mileage of the vehicle, users are reminded to clean carbon deposits in a timely manner.

[0090] The user can input the remaining driving distance S into the vehicle control panel. If S < S max No need to remind you to clean the carbon deposits on the EGR cooler; if S≥S max In such cases, users must be reminded to clean the carbon deposits from the EGR cooler in advance to meet driving conditions; otherwise, it will seriously affect engine performance and vehicle emissions. Data from different routes and operating conditions can be recorded, allowing users to check whether carbon cleaning is necessary before departure for different routes.

[0091] Based on the vehicle's current driving conditions and the amount of carbon buildup in the EGR cooler, if the carbon buildup gradually increases during driving, then the maximum tolerance limit C of the EGR cooler's carbon buildup should be considered. max The current vehicle mileage S1 under operating conditions and the distance traveled based on S max The formula predicts the mileage the vehicle can continue to drive under similar operating conditions, and can determine whether to remind the user to clean the EGR cooler carbon deposits based on the user's actual mileage. If the amount of carbon deposits in the EGR cooler decreases during driving, the vehicle can continue to operate under similar conditions without needing to predict the mileage or remind the user to clean the EGR cooler carbon deposits.

[0092] Data from different routes and operating conditions can be recorded and predicted, allowing users to check at any time whether carbon buildup needs to be cleaned before departure, depending on the route being taken.

[0093] In summary, this application provides a method for cleaning carbon deposits from an EGR cooler. This method involves collecting real-time intake and exhaust pressures of the EGR cooler during vehicle operation; calculating the real-time pressure difference based on these pressures; determining the carbon deposit trend based on the pressure difference; and determining the carbon deposit cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and a maximum carbon deposit limit when the carbon deposit trend is increasing. This solves the problem of users not knowing the appropriate frequency for carbon deposit cleaning. It predicts the time and location when the EGR cooler needs cleaning based on different vehicles and vehicle conditions, promptly reminding drivers to clean the EGR cooler carbon deposits in advance, thus ensuring driving safety.

[0094] Based on the same technical concept, this application also provides an EGR cooler carbon deposit cleaning system, such as... Figure 3 As shown, the system includes:

[0095] The pressure acquisition module 301 is used to acquire the real-time intake pressure and real-time exhaust pressure of the EGR cooler during vehicle operation.

[0096] Pressure differential module 302 is used to calculate the real-time pressure difference based on the real-time intake pressure and the real-time exhaust pressure;

[0097] Carbon deposit module 303 is used to determine the carbon deposit trend based on the real-time pressure difference;

[0098] The cleaning mileage module 304 is used to determine the carbon cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit when the carbon deposit amount trend increases.

[0099] In one possible implementation, the mileage clearing module 304 is specifically used for:

[0100] The maximum mileage that the vehicle can travel under the current operating conditions to reach the maximum carbon buildup limit is calculated based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit.

[0101] The carbon deposit cleaning mileage range is determined based on the vehicle's mileage and the stated maximum mileage.

[0102] This application also provides an electronic device corresponding to the method provided in the foregoing embodiments. Please refer to... Figure 4 The diagram illustrates an electronic device provided by some embodiments of this application. The electronic device 20 may include: a processor 200, a memory 201, a bus 202, and a communication interface 203, wherein the processor 200, the communication interface 203, and the memory 201 are connected via the bus 202; the memory 201 stores a computer program that can run on the processor 200, and when the processor 200 runs the computer program, it executes the method provided by any of the foregoing embodiments of this application.

[0103] The memory 201 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one physical port 203 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network.

[0104] Bus 202 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. The memory 201 is used to store programs. After receiving an execution instruction, the processor 200 executes the program. The method disclosed in any of the foregoing embodiments of this application can be applied to the processor 200, or implemented by the processor 200.

[0105] The processor 200 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 200 or by instructions in software form. The processor 200 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 201. The processor 200 reads the information in memory 201 and, in conjunction with its hardware, completes the steps of the above method.

[0106] The electronic devices and methods provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods they employ, operate, or implement.

[0107] This application also provides a computer-readable storage medium corresponding to the method provided in the foregoing embodiments. Please refer to... Figure 5 The computer-readable storage medium shown is an optical disc 30, on which a computer program (i.e., a program product) is stored, which, when run by a processor, executes the methods provided in any of the foregoing embodiments.

[0108] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0109] The computer-readable storage medium provided in the above embodiments of this application and the method provided in the embodiments of this application are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the applications stored therein.

[0110] It should be noted that:

[0111] The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other equipment. Various general-purpose devices can also be used in conjunction with the teachings herein. The required structure for constructing such devices is apparent from the above description. Furthermore, this application is not directed to any particular programming language. It should be understood that the content of this application described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of this application.

[0112] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0113] Similarly, it should be understood that, in order to simplify this application and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of this application, various features of this application are sometimes grouped together into a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed application requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of this application.

[0114] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0115] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0116] The various component embodiments of this application can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components in the virtual machine creation apparatus according to embodiments of this application. This application can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such an implementation of this application can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0117] It should be noted that the above embodiments are illustrative of this application and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. This application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0118] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0119] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for cleaning carbon deposits in an exhaust gas recirculation (EGR) cooler, characterized in that, The method includes: Real-time intake and exhaust pressures of the EGR cooler are collected during vehicle operation. Calculate the real-time pressure difference based on the real-time intake pressure and real-time exhaust pressure; The trend of carbon deposit amount is determined based on the real-time pressure difference; When the carbon deposits are increasing, the carbon cleaning mileage range is determined based on the vehicle's mileage, real-time carbon deposits, and maximum carbon deposit limit.

2. The method as described in claim 1, characterized in that, The process of determining the carbon deposit cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit includes: The maximum mileage that the vehicle can travel under the current operating conditions to reach the maximum carbon buildup limit is calculated based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit. The carbon deposit cleaning mileage range is determined based on the vehicle's mileage and the stated maximum mileage.

3. The method as described in claim 2, characterized in that, The maximum mileage that the vehicle must travel under current operating conditions to reach the maximum carbon buildup limit is calculated based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit, according to the following formula: S max =(C max -C B ) / C AB *S1*k Among them, C max The maximum carbon buildup limit is given by S1, where S1 is the mileage the vehicle has traveled from point one to point two, and C is the maximum carbon buildup limit. B C represents the amount of carbon deposits when the vehicle reaches the second location. AB The carbon deposit amount is from the first location to the second location, and k is the road operation correction factor.

4. The method as described in claim 3, characterized in that, The maximum carbon buildup limit is determined based on the maximum pressure difference between the intake and exhaust of the EGR cooler; the carbon buildup when the vehicle reaches the second location is determined based on the difference between the intake and exhaust pressures of the EGR cooler at the second location; the carbon buildup from the first location to the second location is determined based on the difference between the carbon buildup at the second location and the carbon buildup at the first location, and the carbon buildup at the first location is determined based on the pressure difference between the intake and exhaust pressures of the EGR cooler at the first location; the carbon buildup at the second location is determined based on the pressure difference between the intake and exhaust pressures of the EGR cooler at the second location.

5. The method as described in claim 2, characterized in that, The method of determining the carbon deposit cleaning mileage range based on the vehicle's mileage and the maximum mileage also includes: If the target mileage entered by the user is greater than or equal to the limit mileage, a carbon buildup warning message will be sent to the user.

6. The method as described in claim 1, characterized in that, The step of determining the carbon deposit trend based on the real-time pressure difference includes: Calculate the corresponding real-time carbon deposit amount based on the real-time pressure difference; Determine the first carbon deposit amount of the vehicle at the first location and the second carbon deposit amount at the second location; The carbon deposition trend is determined to be increasing if the difference between the second carbon deposition amount and the first carbon deposition amount is greater than or equal to 0. The carbon deposition trend is determined to be decreasing based on the fact that the difference between the second carbon deposition amount and the first carbon deposition amount is less than 0.

7. An EGR cooler carbon deposit cleaning system, characterized in that, The system includes: The pressure acquisition module is used to collect the real-time intake and exhaust pressure of the EGR cooler during vehicle operation. The pressure difference module is used to calculate the real-time pressure difference based on the real-time intake pressure and the real-time exhaust pressure. A carbon deposit module is used to determine the carbon deposit trend based on the real-time pressure difference. The cleaning mileage module is used to determine the carbon cleaning mileage range based on the vehicle's mileage, real-time carbon deposit amount, and maximum carbon deposit limit when the carbon deposit amount trend increases.

8. The system as described in claim 7, characterized in that, The mileage clearing module is specifically used for: The maximum mileage that the vehicle can travel under the current operating conditions to reach the maximum carbon buildup limit is calculated based on the vehicle's mileage, real-time carbon buildup amount, and maximum carbon buildup limit. The carbon deposit cleaning mileage range is determined based on the vehicle's mileage and the stated maximum mileage.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the method as claimed in any one of claims 1-6.

10. A computer-readable storage medium, characterized in that, It stores computer-readable instructions that can be executed by a processor to implement the method as described in any one of claims 1-6.

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