Method, device, vehicle and storage medium for determining carbon load of particulate filter

Abstract

The application discloses a kind of carbon load determination method, device, vehicle and storage medium of particle trap, the method comprises: obtaining the current carbon load pressure difference of particle trap;Obtain the carbon load pressure difference correction value corresponding to particle trap of vehicle under current working condition;According to carbon load pressure difference correction value, the current carbon load pressure difference is corrected, and actual carbon load pressure difference is obtained;According to actual carbon load pressure difference, the actual carbon load of particle trap is determined.The application not only helps to reduce fuel consumption, but also can significantly improve the use performance of particle trap, and then optimizes the emission performance and economic performance of vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a method, apparatus, vehicle, and storage medium for determining the carbon load of a particulate filter. Background Technology

[0002] In related technologies, the carbon load level in the particulate filter is assessed by monitoring the status of differential pressure sensors before and after the engine, and based on this, combined with the current operating conditions of the vehicle, a corresponding particulate filter regeneration strategy is selected to manage carbon deposits.

[0003] However, as vehicles age, the aftertreatment particulate filter deteriorates due to high temperatures and usage. This aging process increases its pressure differential, causing a situation where the absence of carbon deposits is misinterpreted by the front and rear pressure differential sensors. With increasing vehicle age, this leads to more frequent regeneration requests and control, resulting in significantly increased fuel consumption or decreased performance. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one object of the present invention is to provide a method for determining the carbon load of a particulate filter, which not only helps to reduce fuel consumption, but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0006] Therefore, a second objective of the present invention is to provide a device for determining the carbon load of a particulate trap.

[0007] Therefore, a third objective of the present invention is to provide a vehicle.

[0008] Therefore, a fourth object of the present invention is to provide a computer-readable storage medium.

[0009] To achieve the above objectives, a first aspect of the present invention discloses a method for determining the carbon load of a particulate filter, comprising: obtaining the current carbon load differential pressure of the particulate filter; obtaining a correction value for the carbon load differential pressure of the particulate filter corresponding to the current operating condition of the vehicle; correcting the current carbon load differential pressure according to the correction value to obtain the actual carbon load differential pressure; and determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure.

[0010] According to the carbon load determination method of the particulate filter according to embodiments of the present invention, by obtaining the current carbon load differential pressure of the particulate filter and the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating conditions, the current carbon load differential pressure can be corrected according to the carbon load differential pressure correction value to eliminate the additional pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation, thereby obtaining the actual carbon load differential pressure that excludes the interference of aging factors, ensuring the accuracy of carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides a more realistic carbon deposit situation for the engine, so as to take targeted control strategies based on the actual carbon load. This not only helps to reduce fuel consumption, but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0011] In addition, the method for determining the carbon loading of a particulate filter according to the above embodiments of the present invention may also have the following additional technical features: In some embodiments, obtaining the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating condition includes: obtaining the predicted differential pressure corresponding to the vehicle under the current operating condition; and obtaining the carbon load differential pressure correction value based on the difference between the predicted differential pressure and the standard differential pressure under the pre-calibrated standard operating condition.

[0012] In some embodiments, obtaining the predicted pressure difference corresponding to the vehicle under the current operating condition includes: obtaining the predicted pressure difference corresponding to the current operating condition based on a pre-calibrated mapping relationship between multiple operating condition parameters and the predicted pressure difference.

[0013] In some embodiments, the operating parameters include engine exhaust flow rate, exhaust temperature, and the vehicle's cumulative mileage.

[0014] In some embodiments, correcting the current carbon loading pressure difference according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference includes: obtaining the actual carbon loading pressure difference based on the difference between the current carbon loading and the carbon loading pressure difference correction value.

[0015] In some embodiments, determining the actual carbon loading based on the actual carbon loading pressure difference includes: determining the actual carbon loading based on the actual carbon loading pressure difference and a pre-calibrated correspondence between the actual carbon loading pressure difference and the actual carbon loading, wherein different actual carbon loading pressure differences are pre-calibrated with corresponding actual carbon loadings.

[0016] In some embodiments, after determining the actual carbon loading, the process includes: determining a regeneration control strategy for the particulate filter based on the actual carbon loading, wherein different actual carbon loadings are pre-calibrated with corresponding regeneration control strategies for the particulate filter.

[0017] To achieve the above objectives, a second aspect of the present invention discloses a carbon load determination device for a particulate filter, comprising: a first acquisition module for acquiring the current carbon load differential pressure of the particulate filter; a second acquisition module for acquiring a carbon load differential pressure correction value of the particulate filter corresponding to the current operating condition of the vehicle; a correction module for correcting the current carbon load differential pressure according to the carbon load differential pressure correction value to obtain an actual carbon load differential pressure; and a determination module for determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure.

[0018] According to the carbon load determination device for a particulate filter of the present invention, by acquiring the current carbon load differential pressure of the particulate filter and the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating conditions, the current carbon load differential pressure can be corrected according to the carbon load differential pressure correction value to eliminate the additional pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation. This results in an actual carbon load differential pressure that excludes the interference of aging factors, ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides the engine with a more realistic carbon buildup situation, enabling targeted control strategies to be implemented based on the actual carbon load. This not only helps reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0019] To achieve the above objectives, a third aspect of the present invention discloses a vehicle comprising: a carbon load determination device for a particulate trap as described in the second aspect of the present invention, or a processor, a memory, and a carbon load determination program for a particulate trap stored in the memory and executable on the processor, wherein the carbon load determination program for a particulate trap, when executed by the processor, implements a carbon load determination method for a particulate trap as described in any embodiment of the first aspect of the present invention.

[0020] According to embodiments of the present invention, by acquiring the current carbon load differential pressure of the particulate filter and the correction value of the carbon load differential pressure of the particulate filter under the current operating conditions, the current carbon load differential pressure can be corrected based on the correction value. This eliminates the additional pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation, thereby obtaining the actual carbon load differential pressure that excludes the interference of aging factors and ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides the engine with a more realistic carbon deposit situation, enabling targeted control strategies to be adopted based on the actual carbon load. This not only helps reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0021] To achieve the above objectives, a fourth aspect of the present invention discloses a computer-readable storage medium storing a carbon loading determination program for a particulate trap. When executed by a processor, the carbon loading determination program for the particulate trap implements the carbon loading determination method for a particulate trap as described in any embodiment of the first aspect of the present invention.

[0022] According to an embodiment of the present invention, when a processor executes a computer-readable storage medium storing a carbon load determination program for a particulate filter, it acquires the current carbon load differential pressure of the particulate filter and a correction value for the carbon load differential pressure of the particulate filter under the current operating conditions. The current carbon load differential pressure is then corrected based on this correction value to eliminate any additional pressure increase that might result from the natural aging of the particulate filter due to long-term operation. This yields an actual carbon load differential pressure that excludes interference from aging factors, ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides the engine with a more realistic carbon buildup situation. This allows for targeted control strategies based on the actual carbon load, which not only helps reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and fuel economy.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a flowchart of a method for determining the carbon loading of a particulate filter according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the control strategy for the aging differential pressure factor module of the post-processing particulate trap according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the aging pressure differential factor module of a post-processing particulate trap according to an embodiment of the present invention; Figure 4 This is a structural block diagram of a carbon loading determination device for a particulate filter according to an embodiment of the present invention; Figure 5 This is a structural block diagram of a vehicle according to an embodiment of the present invention; Figure 6 This is a structural block diagram of a vehicle according to another embodiment of the present invention. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0026] The following is for reference. Figures 1-3 A method for determining the carbon loading of a particulate filter according to an embodiment of the present invention is described.

[0027] Figure 1 This is a flowchart of a method for determining the carbon loading of a particulate filter according to an embodiment of the present invention. Figure 1 As shown, the method includes at least steps S1-S4.

[0028] Step S1: Obtain the current carbon load differential pressure of the particulate filter.

[0029] In an embodiment, such as Figure 2 As shown, differential pressure sensors installed before and after the particulate filter monitor the pressure difference between the inlet and outlet of the particulate filter in real time. This pressure difference reflects the degree of blockage inside the particulate filter, i.e., the carbon loading. When carbon buildup increases inside the particulate filter, the resistance to airflow through the filter increases, resulting in a larger pressure difference.

[0030] like Figure 2 As shown, a front differential pressure sensor is installed before the particulate filter inlet to measure the airflow pressure difference before entering the particulate filter; simultaneously, a rear differential pressure sensor is installed after the particulate filter outlet to measure the airflow pressure difference after leaving the particulate filter. These two sensors capture the pressure changes of the airflow before and after passing through the particulate filter. Then, by calculating the difference between the outlet pressure difference measured by the rear differential pressure sensor and the inlet pressure difference measured by the front differential pressure sensor, the current carbon loading pressure difference can be obtained. For example, the inlet pressure difference is denoted as P1, the outlet pressure difference as P2, and the current carbon loading pressure difference as... P 测 ,but P 测 =P2-P1. The current carbon load pressure difference reflects the increased airflow resistance caused by carbon buildup inside the particulate filter, and is an important basis for determining whether the particulate filter needs regeneration.

[0031] Step S2: Obtain the carbon load differential pressure correction value of the particulate filter corresponding to the current operating conditions of the vehicle.

[0032] In this embodiment, the carbon load differential pressure correction value of the particulate filter corresponding to the current operating condition of the vehicle is obtained, which is to say, the actual operating state of the vehicle, that is, the carbon load differential pressure correction value of the particulate filter under the actual driving mileage of the vehicle.

[0033] Because particulate filters age due to high temperatures and years of use, their pressure differential changes. If the carbon loading status is judged solely based on the current carbon loading pressure difference measured by the front and rear pressure differential sensors, the impact of aging on the pressure differential will be ignored, thus failing to accurately reflect the true carbon loading. Therefore, if... Figure 2 As shown, an aging pressure differential factor module for the post-processing particulate filter is introduced. This module can calculate the pressure differential change caused by aging based on the actual mileage of the vehicle under the current operating conditions and the pressure differential of the particulate filter under different operating conditions, such as through a linear interpolation algorithm, and thus obtain a more accurate carbon load pressure differential correction value.

[0034] Step S3: Correct the current carbon loading pressure difference according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference.

[0035] In this embodiment, after obtaining the carbon loading differential pressure correction value, the current carbon loading differential pressure is adjusted based on this correction value. This involves combining the current carbon loading differential pressure with the correction value and performing appropriate mathematical calculations to obtain a more realistic and accurate carbon loading differential pressure, i.e., the actual carbon loading differential pressure. This process fully considers the impact of particulate filter aging on the differential pressure, ensuring the accuracy of the assessment of the particulate filter's carbon loading.

[0036] Step S4: Determine the actual carbon load of the particulate filter based on the actual carbon load pressure difference.

[0037] In this embodiment, the correlation between the actual carbon loading pressure difference and the actual carbon loading can be relied upon, which is pre-calibrated experimentally. This correlation is established by simulating different carbon loading states and accurately measuring the corresponding pressure differences. In practical applications, by comparing the measured actual carbon loading pressure difference with the correlation, the corresponding actual carbon loading value can be found quickly and accurately.

[0038] Therefore, in embodiments of the present invention, by obtaining the current carbon load differential pressure of the particulate filter and the correction value of the carbon load differential pressure of the particulate filter under the current operating conditions, the current carbon load differential pressure can be corrected according to the correction value. This eliminates the additional pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation, thereby obtaining the actual carbon load differential pressure that excludes the interference of aging factors, ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides the engine with a more realistic carbon deposit situation, so as to take targeted control strategies based on the actual carbon load. This not only helps to reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0039] In one embodiment of the present invention, obtaining the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating condition includes: obtaining the predicted differential pressure corresponding to the vehicle under the current operating condition; and obtaining the carbon load differential pressure correction value based on the difference between the predicted differential pressure and the standard differential pressure under the pre-calibrated standard operating condition.

[0040] In this embodiment, based on the aging pressure difference factor module of the after-treatment particulate filter, after obtaining the actual mileage of the vehicle under the current operating conditions, the actual mileage can be used as a calculation parameter for the aging pressure difference factor module of the after-treatment particulate filter. Through the calculation of this module, the predicted pressure difference corresponding to the vehicle under the current operating conditions can be obtained. For example, the predicted pressure difference can be denoted as... P1.

[0041] Then calculate the predicted pressure difference. The difference between P1 and the pre-calibrated standard pressure difference under standard operating conditions, for example denoted as P1. P0, the carbon loading pressure difference correction value is denoted as P 修 ,but P 修 = P1- P0.

[0042] The standard operating condition refers to the particulate filter being installed on a vehicle with a mileage of 0 kilometers; or, when the particulate filter supports regeneration, the particulate filter has just undergone regeneration treatment.

[0043] In one embodiment of the present invention, obtaining the predicted pressure difference corresponding to the vehicle under the current operating condition includes: obtaining the predicted pressure difference corresponding to the current operating condition based on the mapping relationship between multiple pre-calibrated operating condition parameters and the predicted pressure difference.

[0044] In this embodiment, obtaining the predicted pressure difference corresponding to the vehicle under the current operating conditions will rely on a pre-calibrated mapping relationship between multiple operating condition parameters and the predicted pressure difference. This mapping relationship is established based on a large amount of experimental data and actual operating data. Based on the actual mileage of the vehicle under the current operating conditions, two mileages corresponding to the actual mileage can be found. Then, the predicted pressure difference corresponding to the current actual mileage is calculated using a linear interpolation algorithm.

[0045] For example, the particulate filter can be aged in an environment simulating a standard road cycle, accurately reproducing the various operating conditions a vehicle might encounter on real roads. Even more realistically, during the aging process, a corresponding amount of engine oil can be added to the gasoline based on the vehicle's oil consumption at different mileage stages, ensuring that the particulate filter's aging process is consistent with the effects of oil consumption in actual use. In this way, the particulate filter aging test not only reflects the effects of normal wear and tear but also accurately simulates the potential negative impact of engine oil on the particulate filter's performance.

[0046] Specifically, such as Figure 3 As shown, starting from the particulate filter under standard operating conditions, aging tests are conducted step-by-step according to preset mileage stages. Each time a predetermined mileage node is reached, the particulate filter undergoes carbon removal treatment to eliminate any interference from carbon deposits that might affect subsequent test results. Subsequently, a universal characteristic test is performed. This test comprehensively evaluates the performance of the particulate filter under different operating conditions, specifically including measuring and recording the correlation between the pressure difference, exhaust flow rate, and exhaust temperature after carbon removal.

[0047] For example, if the current actual mileage is 70,000 kilometers, based on the correspondence between the pressure difference after carbon removal by the particulate filter, exhaust flow rate, and exhaust temperature, this 70,000 kilometers is determined to be between 50,000 kilometers and 100,000 kilometers. Therefore, the pressure difference after carbon removal corresponding to 50,000 kilometers will be denoted as, for example, as... P5, and the pressure difference after carbon removal at 100,000 kilometers, for example, denoted as... P10, thus, by using a linear interpolation algorithm, the predicted pressure difference corresponding to 70,000 kilometers can be calculated.

[0048] Using the above method, the correspondence between the carbon removal pressure difference and operating parameters of the particulate filter at different mileage stages of aging can be calibrated. Based on this correspondence, the mapping relationship between various operating parameters and predicted pressure difference can also be calibrated. After obtaining the actual driving mileage, the corresponding predicted pressure difference can be calculated by using this mapping relationship and combining it with a linear interpolation algorithm.

[0049] Therefore, based on this correspondence, the mapping relationship between various operating parameters and predicted pressure difference can be further calibrated. This ensures that under different driving conditions, the corresponding predicted pressure difference can be quickly and accurately calculated using this mapping relationship and a linear interpolation algorithm. Furthermore, the aging of the particulate filter is fully considered when calculating the predicted pressure difference, ensuring the accuracy and practicality of the results and further improving the accuracy of the carbon load pressure difference correction value calculation.

[0050] In one embodiment of the present invention, the operating parameters include the engine's exhaust flow rate, exhaust temperature, and the vehicle's cumulative mileage.

[0051] In this embodiment, the engine's exhaust flow rate reflects the engine's operating intensity, affecting the deposition rate and collection efficiency of particulate matter within the particulate filter; exhaust temperature is a key thermodynamic parameter, obtainable through a temperature sensor; and the vehicle's cumulative mileage, as an important indicator of the particulate filter's aging, is directly related to the physical changes in the filter's internal structure and the decline in its collection capacity. By comprehensively considering these three operating parameters and combining them with the corresponding relationships established from experimental data, high-precision prediction of pressure difference changes in the particulate filter under different operating conditions can be achieved.

[0052] In one embodiment of the present invention, the current carbon loading pressure difference is corrected according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference, including: obtaining the actual carbon loading pressure difference based on the difference between the current carbon loading and the carbon loading pressure difference correction value.

[0053] In this embodiment, when calculating the actual carbon loading pressure difference, the current carbon loading pressure difference is subtracted from the carbon loading pressure difference correction value, and the resulting difference is the actual carbon loading pressure difference. For example, the actual carbon loading pressure difference is denoted as... P 实 ,Right now P 实 = P 测 - P 修 This calculation process not only reflects the fine correction of the measurement results, but also fully considers the aging conditions of the particulate filter under actual operating conditions, thereby ensuring the accuracy and reliability of the obtained actual carbon load pressure difference.

[0054] In one embodiment of the present invention, determining the actual carbon loading based on the actual carbon loading pressure difference includes: determining the actual carbon loading based on the actual carbon loading pressure difference and based on a pre-calibrated correspondence between the actual carbon loading pressure difference and the actual carbon loading, wherein different actual carbon loading pressure differences are pre-calibrated with corresponding actual carbon loadings.

[0055] In this embodiment, in practical applications, once the actual carbon loading pressure difference under the current operating conditions is obtained, the pre-calibrated correspondence between the actual carbon loading pressure difference and the actual carbon loading can be found, quickly and accurately identifying the actual carbon loading that matches the actual carbon loading pressure difference value. This process not only greatly improves the accuracy and efficiency of carbon loading determination but also fully considers the impact of various factors such as particulate filter aging and changes in operating conditions on carbon loading calculation, thereby ensuring the reliability and practicality of the results.

[0056] In one embodiment of the present invention, after determining the actual carbon loading, the process includes: determining a regeneration control strategy for the particulate filter based on the actual carbon loading, wherein different actual carbon loadings are pre-calibrated with corresponding regeneration control strategies for the particulate filter.

[0057] In this embodiment, after determining the actual carbon load, a pre-calibrated particulate filter regeneration control strategy that precisely corresponds to the actual carbon load is identified and applied. This regeneration control strategy refers to a series of specific measures aimed at optimizing particulate filter performance and ensuring its continuous and efficient operation. These measures include, but are not limited to, regeneration triggering conditions, adjustments to engine management parameters during the regeneration process (such as fuel injection strategies and exhaust temperature control), and verification steps after regeneration. Furthermore, these regeneration control strategies are not static but are finely calibrated and optimized for different actual carbon loads to ensure optimal regeneration effects and emission control performance under various operating conditions. This not only significantly improves the management efficiency and emission control level of the particulate filter but also brings substantial improvements to the vehicle's environmental performance and fuel economy.

[0058] According to the carbon load determination method of the particulate filter according to embodiments of the present invention, by obtaining the current carbon load differential pressure of the particulate filter and the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating conditions, the current carbon load differential pressure can be corrected according to the carbon load differential pressure correction value to eliminate the additional pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation, thereby obtaining the actual carbon load differential pressure that excludes the interference of aging factors, ensuring the accuracy of carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides a more realistic carbon deposit situation for the engine, so as to take targeted control strategies based on the actual carbon load. This not only helps to reduce fuel consumption, but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0059] A further embodiment of the present invention discloses a device for determining the carbon loading of a particulate trap.

[0060] like Figure 4 As shown, the carbon loading determination device 2 of the particulate filter includes: a first acquisition module 21, a second acquisition module 22, a correction module 23, and a determination module 24.

[0061] The first acquisition module 21 is used to acquire the current carbon load pressure difference of the particulate filter; the second acquisition module 22 is used to acquire the carbon load pressure difference correction value of the particulate filter corresponding to the current operating condition of the vehicle; the correction module 23 is used to correct the current carbon load pressure difference according to the carbon load pressure difference correction value to obtain the actual carbon load pressure difference; and the determination module 24 is used to determine the actual carbon load of the particulate filter according to the actual carbon load pressure difference.

[0062] In one embodiment of the present invention, the second acquisition module 22 acquires the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating condition, including: acquiring the predicted differential pressure corresponding to the vehicle under the current operating condition; and obtaining the carbon load differential pressure correction value based on the difference between the predicted differential pressure and the standard differential pressure under the pre-calibrated standard operating condition.

[0063] In one embodiment of the present invention, the second acquisition module 22 acquires the predicted pressure difference corresponding to the vehicle under the current operating condition, including: obtaining the predicted pressure difference corresponding to the current operating condition based on the mapping relationship between multiple pre-calibrated operating condition parameters and the predicted pressure difference.

[0064] In one embodiment of the present invention, the operating parameters include the engine's exhaust flow rate, exhaust temperature, and the vehicle's cumulative mileage.

[0065] In one embodiment of the present invention, the correction module 23 corrects the current carbon loading pressure difference according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference, including: obtaining the actual carbon loading pressure difference based on the difference between the current carbon loading and the carbon loading pressure difference correction value.

[0066] In one embodiment of the present invention, the determining module 24 determines the actual carbon loading based on the actual carbon loading pressure difference, including: determining the actual carbon loading based on the actual carbon loading pressure difference and based on the pre-calibrated correspondence between the actual carbon loading pressure difference and the actual carbon loading, wherein different actual carbon loading pressure differences are pre-calibrated with corresponding actual carbon loadings.

[0067] In one embodiment of the present invention, after determining the actual carbon loading, the process includes: determining a regeneration control strategy for the particulate filter based on the actual carbon loading, wherein different actual carbon loadings are pre-calibrated with corresponding regeneration control strategies for the particulate filter.

[0068] The carbon load determination device 2 for a particulate filter according to an embodiment of the present invention obtains the current carbon load differential pressure of the particulate filter and the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating conditions. It then corrects the current carbon load differential pressure based on the correction value to eliminate the additional differential pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation, thereby obtaining the actual carbon load differential pressure that excludes the interference of aging factors and ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides the engine with a more realistic carbon buildup situation, enabling targeted control strategies to be implemented based on the actual carbon load. This not only helps reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0069] A further embodiment of the present invention discloses a vehicle.

[0070] In some embodiments, such as Figure 5 As shown, vehicle 3 includes the carbon load determination device 2 of the particulate trap described in the above embodiments of the present invention.

[0071] In other embodiments, such as Figure 6 As shown, vehicle 3 includes processor 31, memory 32, and a carbon load determination program for particulate trap stored in memory and executable on processor 31. When executed by processor 31, the carbon load determination program for particulate trap implements the carbon load determination method for particulate trap as described in the above embodiments of the present invention.

[0072] According to the vehicle 3 of this embodiment, by acquiring the current carbon load differential pressure of the particulate filter and the correction value of the carbon load differential pressure of the particulate filter under the current operating conditions, the current carbon load differential pressure can be corrected based on the correction value. This eliminates the additional pressure increase that may be caused by the natural aging of the particulate filter due to long-term operation, thereby obtaining the actual carbon load differential pressure that excludes the interference of aging factors, ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, the actual carbon load of the particulate filter is determined based on the actual carbon load differential pressure, which can provide the engine with a more realistic carbon deposit situation, so as to take targeted control strategies based on the actual carbon load. This not only helps to reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and economic performance.

[0073] A further embodiment of the present invention discloses a computer-readable storage medium storing a carbon loading determination program for a particulate trap. When executed by a processor, the carbon loading determination program for the particulate trap implements the carbon loading determination method for the particulate trap as described in the above embodiments of the present invention.

[0074] According to an embodiment of the present invention, when a processor executes a computer-readable storage medium storing a carbon load determination program for a particulate filter, it acquires the current carbon load differential pressure of the particulate filter and a correction value for the carbon load differential pressure of the particulate filter under the current operating conditions. The current carbon load differential pressure is then corrected based on this correction value to eliminate any additional pressure increase that might result from the natural aging of the particulate filter due to long-term operation. This yields an actual carbon load differential pressure that excludes interference from aging factors, ensuring the accuracy of the carbon load differential pressure assessment. Subsequently, determining the actual carbon load of the particulate filter based on the actual carbon load differential pressure provides the engine with a more realistic carbon buildup situation. This allows for targeted control strategies based on the actual carbon load, which not only helps reduce fuel consumption but also significantly improves the performance of the particulate filter, thereby optimizing the vehicle's emission performance and fuel economy.

[0075] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0076] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method of determining the carbon loading of a particulate filter, characterized by, include: Obtain the current carbon loading differential pressure of the particulate filter; Obtain the carbon load differential pressure correction value of the particulate filter corresponding to the current operating condition of the vehicle; The current carbon loading pressure difference is corrected according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference; The actual carbon load of the particulate filter is determined based on the actual carbon load pressure difference.

2. The method of determining the carbon loading of a particulate filter according to claim 1, wherein, Obtaining the carbon load differential pressure correction value of the particulate filter corresponding to the vehicle under the current operating conditions includes: Obtain the predicted pressure difference of the vehicle under the current operating conditions; The carbon loading pressure difference correction value is obtained based on the difference between the predicted pressure difference and the standard pressure difference under the pre-calibrated standard operating conditions.

3. The method of determining the carbon loading of a particulate filter according to claim 2, wherein, Obtaining the predicted differential pressure of the vehicle under the current operating conditions includes: Based on the pre-calibrated mapping relationship between multiple operating condition parameters and predicted pressure difference, the predicted pressure difference corresponding to the current operating condition is obtained.

4. The method of claim 3, wherein the carbon loading of the particulate filter is determined by: The operating parameters include the engine's exhaust flow rate, exhaust temperature, and the vehicle's cumulative mileage.

5. The method for determining the carbon loading of a particulate filter according to claim 1, characterized in that, The current carbon loading pressure difference is corrected according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference, including: The actual carbon loading pressure difference is obtained based on the difference between the current carbon loading and the carbon loading pressure difference correction value.

6. The method for determining the carbon loading of a particulate filter according to claim 1, characterized in that, The actual carbon loading is determined based on the actual carbon loading pressure difference, including: The actual carbon loading is determined based on the actual carbon loading pressure difference and the pre-calibrated correspondence between the actual carbon loading pressure difference and the actual carbon loading, wherein different actual carbon loading pressure differences are pre-calibrated with corresponding actual carbon loadings.

7. The method for determining the carbon loading of a particulate filter according to claim 6, characterized in that, After determining the actual carbon loading, the following steps are included: The regeneration control strategy of the particulate filter is determined based on the actual carbon loading, wherein different actual carbon loadings are pre-calibrated with corresponding regeneration control strategies for the particulate filter.

8. A device for determining the carbon loading of a particulate filter, characterized in that, include: The first acquisition module is used to acquire the current carbon loading pressure difference of the particle trap; The second acquisition module is used to acquire the carbon load differential pressure correction value of the particulate filter corresponding to the current operating condition of the vehicle. The correction module is used to correct the current carbon loading pressure difference according to the carbon loading pressure difference correction value to obtain the actual carbon loading pressure difference. The determination module is used to determine the actual carbon load of the particulate filter based on the actual carbon load pressure difference.

9. A vehicle, characterized in that, include: The carbon loading determination device for a particulate filter as described in claim 8; or, A processor, a memory, and a carbon loading determination program for a particulate trap stored in the memory and executable on the processor, wherein the carbon loading determination program for the particulate trap, when executed by the processor, implements the carbon loading determination method for a particulate trap as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a carbon load determination program for a particulate trap, which, when executed by a processor, implements the carbon load determination method for a particulate trap as described in any one of claims 1-7.

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