Control Method and Related Equipment for Preventing Overheating of the Aftertreatment Harness of an Extended-Range Loader

Abstract

The present invention belongs to the technical field of range-extended loaders. A control method and related equipment for preventing the over-temperature of the aftertreatment wiring harness of a range-extended loader are proposed. Whether there is a need for carbon loading verification is judged by the number of regeneration times. When there is no need for verification, the over-temperature of the aftertreatment wiring harness is avoided by increasing the carbon loading threshold for exiting regeneration. When there is a need for carbon loading verification, by increasing the fan speed threshold without increasing the carbon loading threshold for exiting regeneration, while achieving the purpose of avoiding the over-temperature of the aftertreatment wiring harness, the verification of the model carbon loading is realized. The present invention solves the problems of increased error caused by increasing the carbon loading threshold for exiting regeneration and high fuel consumption caused by increasing the fan speed, and improves the control accuracy of the over-temperature of the aftertreatment wiring harness of the range-extended loader.

Description

Technical Field

[0001] The present invention relates to the technical field of range-extended loaders, and in particular to a control method and related equipment for preventing overheating of the after-treatment wiring harness of a range-extended loader. Background Art

[0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] As an efficient and low-emission engineering machinery equipment, range-extended loaders have been widely used in various construction and material handling operations. By equipping with a range extender, range-extended loaders can effectively reduce fuel consumption and emission pollution while ensuring power output. However, during the actual use of range-extended loaders, especially after performing high-intensity and long-time operation tasks, a certain amount of particulate matter and harmful substances will accumulate in the engine and its after-treatment system, which not only affects the performance of the engine but also may lead to excessive emissions and does not meet the environmental protection requirements.

[0004] To address the above problems, range-extended loaders usually adopt high-temperature regeneration technology to remove particulate matter in the engine after-treatment system. This technology raises the exhaust temperature of the engine to burn the carbon particles deposited on the after-treatment devices such as the diesel particulate filter (DPF), so as to achieve the purpose of regeneration. The high-temperature regeneration process is of great significance for restoring the engine performance and maintaining the emission compliance.

[0005] However, during the high-temperature regeneration process of the range-extended loader engine, when the range-extended loader engine is undergoing high-temperature regeneration, the exhaust temperature rises sharply, and the after-treatment wiring harness is directly exposed to a high-temperature environment. Due to the compact internal space of the loader, the wiring harness layout is restricted, and the heat dissipation conditions are poor, which easily leads to a rapid increase in the temperature of the wiring harness, and then exceeds the design limit.

[0006] Currently, two common solutions are used to control the problem of overheating of the after-treatment wiring harness: (1) By increasing the carbon loading threshold for exiting regeneration to shorten the regeneration duration to achieve the purpose of preventing the after-treatment wiring harness from overheating. However, increasing the carbon loading for exiting regeneration will cause the model to calculate the carbon loading and cannot be calibrated, resulting in a problem of increasing error; (2) By increasing the fan speed to enhance the cooling capacity to achieve the purpose of preventing the after-treatment wiring harness from overheating. However, increasing the fan speed has the problem of high fuel consumption. Summary of the Invention

[0007] To address the deficiencies of the prior art, the present invention provides a control method and related equipment for preventing overheating of the aftertreatment wiring harness of an extended-range loader. By judging the number of regenerations to determine whether there is a need to verify the carbon load, when there is no such need, the threshold of the carbon load for exiting regeneration is increased to avoid overheating of the aftertreatment wiring harness. When there is a need to verify the carbon load, by increasing the threshold of the fan speed and not increasing the threshold of the carbon load for exiting regeneration, while achieving the purpose of avoiding overheating of the aftertreatment wiring harness, the verification of the carbon load in the model is realized, and the control accuracy of overheating of the aftertreatment wiring harness of the extended-range loader is improved.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a control method for preventing overheating of the aftertreatment wiring harness of an extended-range loader.

[0010] A control method for preventing overheating of the aftertreatment wiring harness of an extended-range loader includes the following processes:

[0011] Obtain the basic carbon load for exiting, the basic fan speed, and the current carbon load;

[0012] When the current carbon load is greater than the set threshold, enter the regeneration mode;

[0013] When the number of regenerations is greater than the set number threshold, there is a need to verify the carbon load. Keep the basic carbon load for exiting unchanged and control the fan speed based on the current carbon load and the aftertreatment temperature. When the number of regenerations is less than or equal to the set threshold, there is no need to verify the carbon load. Do not increase the basic fan speed and increase the critical value of the carbon load for exiting regeneration from the basic carbon load for exiting to the threshold of the carbon load for exiting regeneration.

[0014] As a further limitation of the first aspect of the present invention, controlling the fan speed based on the current carbon load and the aftertreatment temperature includes:

[0015] When the number of regenerations is greater than the set threshold, judge whether the current carbon load is greater than the basic carbon load for exiting. When the current carbon load is greater than the basic carbon load for exiting, the control ends;

[0016] When the current carbon load is less than or equal to the basic carbon load for exiting, judge whether the aftertreatment temperature reaches the set maximum temperature. If so, do not change the basic carbon load for exiting, and increase the fan speed from the basic fan speed to the threshold of the wind speed. If not, keep the basic fan speed unchanged, return to continue judging whether the current carbon load is greater than the basic carbon load for exiting until the aftertreatment temperature reaches the set maximum temperature.

[0017] As a further limitation of the first aspect of the present invention, when the basic carbon loading for exit is reached, overheating of the aftertreatment harness occurs; when the basic fan speed is reached, overheating of the aftertreatment harness occurs.

[0018] As a further limitation of the first aspect of the present invention, the process for obtaining the carbon loading threshold for exit from regeneration includes: without changing the basic fan speed, increasing the carbon loading for exit from regeneration to obtain the carbon loading threshold for exit from regeneration at which the aftertreatment harness does not overheat.

[0019] As a further limitation of the first aspect of the present invention, the process for obtaining the fan speed threshold includes: without changing the basic carbon loading for exit from regeneration, increasing the fan speed when the regeneration process reaches the maximum regeneration temperature to obtain the fan speed threshold at which the aftertreatment harness does not overheat.

[0020] In a second aspect, the present invention provides a control system for preventing overheating of the aftertreatment harness of an extended-range loader.

[0021] A control system for preventing overheating of the aftertreatment harness of an extended-range loader, comprising:

[0022] A data acquisition unit configured to: acquire the basic carbon loading for exit, the basic fan speed, and the current carbon loading;

[0023] A regeneration determination unit configured to: enter the regeneration mode when the current carbon loading is greater than a set threshold;

[0024] A control unit configured to: when the number of regenerations is greater than a set number threshold and there is a need to verify the carbon loading, keep the basic carbon loading for exit unchanged and perform fan speed control based on the current carbon loading and the aftertreatment temperature; when the number of regenerations is less than or equal to the set threshold and there is no need to verify the carbon loading, do not increase the basic fan speed and increase the critical value of the carbon loading for exit from regeneration to the carbon loading threshold for exit from regeneration based on the basic carbon loading for exit.

[0025] As a further limitation of the second aspect of the present invention, in the control unit, performing fan speed control based on the current carbon loading and the aftertreatment temperature includes:

[0026] When the number of regenerations is greater than the set threshold, determine whether the current carbon loading is greater than the basic carbon loading for exit. When the current carbon loading is greater than the basic carbon loading for exit, the control ends;

[0027] When the current carbon loading is less than or equal to the base exit carbon loading, it is judged whether the post-treatment temperature reaches the set maximum temperature. If so, the base exit carbon loading is not changed, and the fan speed is increased from the base fan speed to the wind speed threshold. If not, the base fan speed is maintained unchanged, and it returns to continue judging whether the current carbon loading is greater than the base exit carbon loading until the post-treatment temperature reaches the set maximum temperature.

[0028] In a third aspect, the present invention provides a computer device, comprising: a processor and a computer-readable storage medium;

[0029] The processor is adapted to execute a computer program;

[0030] The computer program is stored in the computer-readable storage medium, and when the computer program is executed by the processor, it implements the control method for preventing the post-treatment wiring harness of an extended-range loader from overheating as described in the first aspect of the present invention.

[0031] In a fourth aspect, the present invention provides a computer-readable storage medium, which stores a computer program, and the computer program is adapted to be loaded and executed by a processor to implement the control method for preventing the post-treatment wiring harness of an extended-range loader from overheating as described in the first aspect of the present invention.

[0032] In a fifth aspect, the present invention provides an extended-range loader, comprising: a processor, and the processor is configured to execute the control method for preventing the post-treatment wiring harness of an extended-range loader from overheating as described in the first aspect of the present invention.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] 1. The present invention innovatively proposes a control strategy for preventing the post-treatment wiring harness of an extended-range loader from overheating. By judging the number of regenerations, it determines whether there is a need to check the carbon loading. When there is no need to check, the threshold of the exit regeneration carbon loading is increased to avoid overheating of the post-treatment wiring harness. When there is a need to check the carbon loading, the threshold of the fan speed is increased, and the threshold of the exit regeneration carbon loading is not increased. While achieving the purpose of avoiding overheating of the post-treatment wiring harness, it realizes the checking of the model carbon loading and improves the control accuracy of the post-treatment wiring harness overheating of the extended-range loader.

[0035] 2. The present invention innovatively proposes a control strategy for preventing the over-temperature of the aftertreatment wiring harness of an extended-range loader. It determines whether the current carbon loading is greater than the base exit carbon loading. When the current carbon loading is greater than the base exit carbon loading, the control ends. When the current carbon loading is less than or equal to the base exit carbon loading, it determines whether the aftertreatment temperature reaches the set maximum temperature. If so, the fan speed is increased from the base fan speed to the fan speed threshold. If not, it returns to continue determining whether the current carbon loading is greater than the base exit carbon loading until the aftertreatment temperature reaches the set maximum temperature, further improving the accuracy of the wind speed control.

[0036] 3. The present invention innovatively proposes a control strategy for preventing the over-temperature of the aftertreatment wiring harness of an extended-range loader. The base exit carbon loading is the exit carbon loading under the traditional regeneration strategy or the conventional regeneration strategy. Under the traditional regeneration strategy or the conventional regeneration strategy, when the base exit carbon loading is reached and the aftertreatment wiring harness overheats, without changing the base fan speed, the carbon loading for exit regeneration is increased to obtain the threshold value of the carbon loading for exit regeneration that prevents the aftertreatment wiring harness from overheating, ensuring the control accuracy of the carbon loading.

[0037] 4. The present invention innovatively proposes a control strategy for preventing the over-temperature of the aftertreatment wiring harness of an extended-range loader. The base fan speed is the fan speed under the traditional fan control strategy or the conventional fan control strategy. Under the traditional fan control strategy or the conventional fan control strategy, when the base fan speed is reached and the aftertreatment wiring harness overheats, without changing the base exit carbon loading for exit regeneration, the fan speed when the regeneration process reaches the maximum regeneration temperature is increased to obtain the fan speed threshold that prevents the aftertreatment wiring harness from overheating, effectively ensuring the wind speed control of the over-temperature of the aftertreatment wiring harness.

[0038] Advantages of additional aspects of the present invention will be partly given in the following description, partly will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0040] Figure 1 It is a process schematic diagram of the control method for preventing the over-temperature of the aftertreatment wiring harness of an extended-range loader provided in Embodiment 1 of the present invention;

[0041] Figure 2 It is a flow schematic diagram of the control method for preventing the over-temperature of the aftertreatment wiring harness of an extended-range loader provided in Embodiment 1 of the present invention;

[0042] Figure 3A schematic diagram of a control system for preventing overheating of a post-processing harness of an extended-range loader provided in Embodiment 2 of the present invention;

[0043] Figure 4 A schematic diagram of a computer device provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0046] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other. Embodiment 1:

[0047] This implementation proposes a control method to prevent overheating of the post-processing harness of the extended-range loader. The following is a brief introduction to the technical terms and related concepts involved in this treatment scheme, including:

[0048] Loaders are heavy machinery widely used in engineering construction, mining, agriculture and other fields. They are mainly used for shoveling, transportation, stacking and filling. The front of the loader is equipped with a large bucket, which is controlled by the hydraulic system to lift and tilt. It can easily shovel and carry loose materials such as soil, sand, coal, etc. According to different uses and working environments, loaders have various types and specifications, including wheel loaders and crawler loaders. The working characteristics of loaders include high efficiency, flexibility and strong adaptability, and they can perform high-intensity operations in various complex terrains and environments.

[0049] A range extender is a device used to extend the driving range of an electric or hybrid vehicle. It is usually a small internal combustion engine (such as a gasoline or diesel engine) combined with a generator. The main function of the range extender is to charge the battery by generating electricity when the battery is exhausted, thereby extending the vehicle's driving distance. The range extender can maintain low fuel consumption and emissions during vehicle operation, enhancing the convenience of using electric vehicles. A range extender loader is a loader equipped with a range extender.

[0050] Carbon load refers to the total amount of carbon accumulated in the engine, exhaust system or other related equipment. The model-calculated carbon load will have calculation deviations, and the actual carbon load needs to be eliminated to an extremely low value through the regeneration high-temperature carbon elimination process, so that the model carbon load is consistent with the actual carbon load, so as to achieve the purpose of verifying the model carbon load.

[0051] The described control method, such as Figure 1 shown, includes the following processes:

[0052] S1: Obtain the base exit carbon load sm0, the base fan speed n0, and the current carbon load;

[0053] S2: When the current carbon load is greater than the set threshold sm_max, enter the regeneration mode;

[0054] S3: When the number of regenerations is greater than the set number threshold (i.e., threshold m), there is a need to check the carbon load. Keep the base exit carbon load sm0 unchanged, and control the fan speed based on the current carbon load and the post-treatment temperature; when the number of regenerations is less than or equal to the set threshold, there is no need to check the carbon load, do not increase the base fan speed n0, and increase the critical value of the carbon load at the end of regeneration from the base exit carbon load sm0 to the threshold sm1 of the carbon load at the end of regeneration.

[0055] In S1 of this implementation, the base exit carbon load sm0 is the carbon load at the end of the traditional regeneration strategy or the conventional regeneration strategy. Under the traditional regeneration strategy or the conventional regeneration strategy, when the base exit carbon load sm0 is reached, the post-treatment wiring harness overheats; similarly, the base fan speed n0 is the fan speed under the traditional fan control strategy or the conventional fan control strategy. Under the traditional fan control strategy or the conventional fan control strategy, when the base fan speed n0 is reached, the post-treatment wiring harness overheats.

[0056] It can be understood that the base exit carbon load sm0 and the base fan speed n0 here can be obtained through a limited number of experiments and will not be elaborated here.

[0057] In S3 of this implementation, such as Figure 2 shown, control the fan speed based on the current carbon load and the post-treatment temperature. Specifically, it includes:

[0058] When the number of regenerations is greater than the set number threshold (i.e., threshold m), judge whether the current carbon load is greater than the base exit carbon load sm0. When the current carbon load is greater than the base exit carbon load sm0, the control ends; when the current carbon load is less than or equal to the base exit carbon load sm0, judge whether the post-treatment temperature reaches the set maximum temperature. If so, do not change the base exit carbon load sm0, and increase the fan speed from the base fan speed n0 to the wind speed threshold n1. If not, keep the base fan speed n0 unchanged, and return to continue judging whether the current carbon load is greater than the base exit carbon load sm0 until the post-treatment temperature reaches the set maximum temperature.

[0059] In S3 of this implementation method, obtaining the carbon loading threshold sm1 for exiting regeneration includes: without changing the basic fan speed n0, increasing the carbon loading for exiting regeneration to obtain the carbon loading threshold sm1 for exiting regeneration that does not cause the post-treatment wire harness to overheat. Obtaining the fan speed threshold n1 includes: without changing the basic carbon loading sm0 for exiting regeneration, increasing the fan speed when the regeneration process reaches the maximum regeneration temperature to obtain the fan speed threshold n1 that does not cause the post-treatment wire harness to overheat. Embodiment 2:

[0060] As Figure 3 shown, this implementation method provides a control system for preventing the post-treatment wire harness of an extended-range loader from overheating, including:

[0061] A data acquisition unit configured to: acquire the basic carbon loading for exiting, the basic fan speed, and the current carbon loading;

[0062] A regeneration judgment unit configured to: enter the regeneration mode when the current carbon loading is greater than a set threshold;

[0063] A control unit configured to: when the number of regeneration times is greater than a set number threshold and there is a need to verify the carbon loading, keep the basic carbon loading for exiting unchanged and perform fan speed control based on the current carbon loading and the post-treatment temperature; when the number of regeneration times is less than or equal to the set threshold and there is no need to verify the carbon loading, do not increase the basic fan speed and increase the critical value of the carbon loading for exiting regeneration to the carbon loading threshold for exiting regeneration based on the basic carbon loading for exiting.

[0064] In the control unit, performing fan speed control based on the current carbon loading and the post-treatment temperature includes:

[0065] When the number of regeneration times is greater than the set threshold, judge whether the current carbon loading is greater than the basic carbon loading for exiting. When the current carbon loading is greater than the basic carbon loading for exiting, the control ends;

[0066] When the current carbon loading is less than or equal to the basic carbon loading for exiting, judge whether the post-treatment temperature reaches the set maximum temperature. If so, do not change the basic carbon loading for exiting and increase the fan speed from the basic fan speed to the wind speed threshold. If not, keep the basic fan speed unchanged and return to continue judging whether the current carbon loading is greater than the basic carbon loading for exiting until the post-treatment temperature reaches the set maximum temperature.

[0067] The specific working processes of each unit can be seen in the introduction in Embodiment 1 and will not be elaborated here.

[0068] It can be understood that the above-mentioned units can be separately or wholly combined into one or several other units, or some of them can be further split into multiple smaller units in terms of function, which can achieve the same operations without affecting the realization of the technical effects of the embodiments of the present application. The above units are divided based on logical functions. In practical applications, the function of one unit can also be realized by multiple units, or the functions of multiple units can be realized by one unit. In other embodiments of the present application, the system may also include other units. In practical applications, these functions can also be assisted by other units and can be realized through the cooperation of multiple units.

[0069] According to another embodiment of the present application, the system described in this embodiment can be constructed, and the method of Embodiment 1 of the present application can be implemented by running a computer program (including program code) capable of executing the respective steps involved in the corresponding method described in Embodiment 1 on a general computing device such as a computer including processing elements and storage elements such as a central processing unit (CPU), a random access memory (RAM), and a read-only memory (ROM). The computer program can be recorded on, for example, a computer-readable recording medium, loaded into the above-mentioned computing device through the computer-readable recording medium, and run therein. Embodiment 3:

[0070] As Figure 4 shown, this implementation provides an electronic device, which includes a processor 1001, a communication interface 1002, and a computer-readable storage medium 1003. Among them, the processor 1001, the communication interface 1002, and the computer-readable storage medium 1003 can be connected through a bus or other means.

[0071] Among them, the communication interface 1002 is used for receiving and sending data. The computer-readable storage medium 1003 can be stored in the memory of the electronic device. The computer-readable storage medium 1003 is used for storing a computer program, and the computer program includes program instructions. The processor 1001 is used for executing the program instructions stored in the computer-readable storage medium 1003.

[0072] The processor 1001 (or CPU (Central Processing Unit, central processor)) is the computing core and control core of the electronic device, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions to thereby implement the corresponding method flow or corresponding function.

[0073] The processor 1001 is configured to execute the following process:

[0074] Obtain the basic carbon loading at exit, the basic fan speed, and the current carbon loading;

[0075] When the current carbon loading is greater than the set threshold, enter the regeneration mode;

[0076] When the number of regenerations is greater than the set number threshold, there is a need to check the carbon loading. Keep the basic carbon loading at exit unchanged and control the fan speed based on the current carbon loading and the aftertreatment temperature; when the number of regenerations is less than or equal to the set threshold, there is no need to check the carbon loading, do not increase the basic fan speed, and increase the carbon loading critical value at the exit of regeneration from the basic carbon loading at exit to the carbon loading threshold at the exit of regeneration.

[0077] For the specific working process, refer to the introduction in Embodiment 1 and details will not be elaborated here. Embodiment 4:

[0078] This implementation provides a computer-readable storage medium. A computer-readable storage medium is a memory device in an electronic device for storing programs and data. It can be understood that the computer-readable storage medium here can include both the built-in storage medium in the electronic device and, of course, the extended storage medium supported by the electronic device. The computer-readable storage medium provides a storage space that stores the processing system of the electronic device.

[0079] Moreover, in this storage space, one or more instructions suitable for being loaded and executed by the processor are also stored. These instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory; optionally, it can also be at least one computer-readable storage medium located far from the aforementioned processor.

[0080] In one embodiment, one or more instructions are stored in the computer-readable storage medium; the processor loads and executes one or more instructions stored in the computer-readable storage medium to implement the following process:

[0081] Obtain the basic carbon loading at exit, the basic fan speed, and the current carbon loading;

[0082] When the current carbon loading is greater than the set threshold, enter the regeneration mode;

[0083] When the number of regenerations is greater than the set number threshold, there is a need to check the carbon loading. Keep the base exit carbon loading unchanged and control the fan speed based on the current carbon loading and the post-treatment temperature. When the number of regenerations is less than or equal to the set threshold, there is no need to check the carbon loading. Do not increase the base fan speed and increase the critical value of the carbon loading for exiting regeneration from the base exit carbon loading to the threshold value of the carbon loading for exiting regeneration.

[0084] The specific working process is as described in Embodiment 1 and will not be elaborated here.

[0085] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in this application can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Skilled professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0086] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted through the computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital line (DSL, Digital Subscriber Line)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data processing device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital video disc), or a semiconductor medium (such as a solid-state drive (SSD)), etc. Embodiment 5:

[0087] This implementation provides a range-extended loader, which includes a processor. Optionally, it may also include necessary component mechanisms such as a power system, a transmission system, a loading working device, a battery pack, and a control system (not described in detail here). Among them, the processor serves as the central control unit, responsible for receiving and processing data from various sensors, and controlling various operations of the loader; the power system provides the energy required for the operation of the loader, and the transmission system is responsible for transmitting the power to the loading working device; the battery pack provides power support for the loader, and the control system regulates various functions of the loader according to the instructions of the processor.

[0088] In this implementation, preferably, the processor is configured to execute the following process of a control method for preventing the post-treatment wiring harness of the range-extended loader from overheating:

[0089] Obtain the base exit carbon loading, the base fan speed, and the current carbon loading;

[0090] When the current carbon loading is greater than the set threshold, enter the regeneration mode;

[0091] When the number of regenerations is greater than the set number threshold, there is a need to check the carbon loading. Keep the base exit carbon loading unchanged and control the fan speed based on the current carbon loading and the post-treatment temperature; when the number of regenerations is less than or equal to the set threshold, there is no need to check the carbon loading. Do not increase the base fan speed, and increase the critical value of the carbon loading for exiting regeneration from the base exit carbon loading to the threshold value of the carbon loading for exiting regeneration.

[0092] For the specific working process, refer to the introduction in Embodiment 1 and will not be elaborated here.

[0093] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A control method for preventing overheating of the aftertreatment wiring harness of an extended-range loader, characterized in that, It includes the following processes: Obtain the basic exit carbon loading, the basic fan speed, and the current carbon loading; wherein, the basic exit carbon loading is the exit carbon loading under the traditional regeneration strategy or the conventional regeneration strategy, and when the basic exit carbon loading is reached, the post-treatment wiring harness overheats; the basic fan speed is the fan speed under the traditional fan control strategy or the conventional fan control strategy, and when the basic fan speed is reached, the post-treatment wiring harness overheats; When the current carbon loading is greater than the set threshold, enter the regeneration mode; When the number of regenerations is greater than the set number threshold, there is a need to verify the carbon loading. Keep the basic exit carbon loading unchanged and control the fan speed based on the current carbon loading and the post-treatment temperature; when the number of regenerations is less than or equal to the set threshold, there is no need to verify the carbon loading. Do not increase the basic fan speed and increase the carbon loading critical value for exiting regeneration from the basic exit carbon loading to the exit regeneration carbon loading threshold; Among them, controlling the fan speed based on the current carbon loading and the post-treatment temperature includes: When the number of regenerations is greater than the set threshold, judge whether the current carbon loading is greater than the basic exit carbon loading. When the current carbon loading is greater than the basic exit carbon loading, the control ends; When the current carbon loading is less than or equal to the basic exit carbon loading, judge whether the post-treatment temperature reaches the set maximum temperature. If so, do not change the basic exit carbon loading and increase the fan speed from the basic fan speed to the fan speed threshold. If not, keep the basic fan speed unchanged and return to continue judging whether the current carbon loading is greater than the basic exit carbon loading until the post-treatment temperature reaches the set maximum temperature.

2. The control method for preventing overheating of the aftertreatment wiring harness of an extended-range loader according to claim 1, characterized in that, The process for obtaining the exit regeneration carbon loading threshold includes: Without changing the basic fan speed, increase the carbon loading for exiting regeneration to obtain the exit regeneration carbon loading threshold that does not cause the post-treatment wiring harness to overheat.

3. The control method for preventing overheating of the aftertreatment wiring harness of an extended-range loader according to claim 1, characterized in that The process for obtaining the fan speed threshold includes: Without changing the basic exit carbon loading for exiting regeneration, increase the fan speed when the regeneration process reaches the maximum regeneration temperature to obtain the fan speed threshold that does not cause the post-treatment wiring harness to overheat.

4. A control system for preventing overheating of the aftertreatment wiring harness of an extended-range loader, characterized in that, It includes: A data acquisition unit, configured to: obtain the basic exit carbon loading, the basic fan speed, and the current carbon loading; wherein, the basic exit carbon loading is the exit carbon loading under the traditional regeneration strategy or the conventional regeneration strategy, and when the basic exit carbon loading is reached, the post-treatment wiring harness overheats; the basic fan speed is the fan speed under the traditional fan control strategy or the conventional fan control strategy, and when the basic fan speed is reached, the post-treatment wiring harness overheats; A regeneration judgment unit, configured to: when the current carbon loading is greater than the set threshold, enter the regeneration mode; A control unit is configured to: when the number of regenerations is greater than a set number threshold and there is a need to check the carbon loading, keep the base exit carbon loading unchanged and control the fan speed based on the current carbon loading and the aftertreatment temperature; when the number of regenerations is less than or equal to the set threshold and there is no need to check the carbon loading, do not increase the base fan speed and increase the carbon loading critical value for exiting regeneration from the base exit carbon loading to the carbon loading threshold for exiting regeneration. Wherein, In the control unit, the control of the fan speed based on the current carbon loading and the aftertreatment temperature includes: When the number of regenerations is greater than the set threshold, determine whether the current carbon loading is greater than the base exit carbon loading. When the current carbon loading is greater than the base exit carbon loading, the control ends. When the current carbon loading is less than or equal to the base exit carbon loading, determine whether the aftertreatment temperature reaches the set maximum temperature. If so, do not change the base exit carbon loading and increase the fan speed from the base fan speed to the fan speed threshold. If not, keep the base fan speed unchanged and return to continue determining whether the current carbon loading is greater than the base exit carbon loading until the aftertreatment temperature reaches the set maximum temperature.

5. A computer device, characterized in that, Comprising: A processor and a computer-readable storage medium; The processor is adapted to execute a computer program; The computer-readable storage medium stores the computer program, and when the computer program is executed by the processor, it implements the control method for preventing the overheating of the aftertreatment wiring harness of an extended-range loader as described in any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the computer program is adapted to be loaded and executed by the processor to implement the control method for preventing the overheating of the aftertreatment wiring harness of an extended-range loader as described in any one of claims 1 to 3.

7. An extended-range loader, characterized in that, Comprising: A processor configured to execute the control method for preventing the overheating of the aftertreatment wiring harness of an extended-range loader as described in any one of claims 1 to 3.

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