Vehicle post-processing system configuration method, device and equipment and readable storage medium
By optimizing the catalytic converter and particulate filter step by step, the combination with the highest cost performance was selected, which solved the problem of increased costs caused by excessive use of precious metals and achieved the optimal configuration and cost reduction of the after-treatment system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHONGAN ZHIYAN (WUHAN) TRANSPORTATION TECHNOLOGY CO LTD
- Filing Date
- 2026-03-30
- Publication Date
- 2026-05-12
AI Technical Summary
To ensure that vehicle emissions meet standards, car manufacturers generally increase the amount of precious metals in their after-treatment systems, which leads to a significant increase in costs.
By optimizing the configuration of the catalytic converter and particulate filter in stages, the most cost-effective combination is selected to reduce the amount of precious metals used while meeting emission requirements.
While meeting emission requirements, the cost of the after-treatment system is significantly reduced, and the optimal allocation of precious metals is achieved, thereby achieving the goal of cost reduction and efficiency improvement.
Smart Images
Figure CN122014392A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle environmental protection technology, and in particular to a method, apparatus, equipment and readable storage medium for configuring a vehicle after-treatment system. Background Technology
[0002] The vehicle aftertreatment system is a core environmental protection device installed in the engine exhaust system to purify exhaust gas and reduce pollutant emissions. It works in conjunction with the engine to convert harmful substances such as carbon monoxide, hydrocarbons, nitrogen oxides and particulate matter in the exhaust gas into harmless or less harmful substances (such as carbon dioxide, water and nitrogen) to meet strict emission regulations.
[0003] To ensure vehicle emissions meet standards, automakers generally increase the amount of precious metals in their aftertreatment systems, incorporating significant margins in the system's design. However, the sharp rise in precious metal prices has led to a substantial increase in the cost of these aftertreatment systems. Summary of the Invention
[0004] This application provides a method, apparatus, device, and readable storage medium for configuring a vehicle aftertreatment system, aiming to address the technical problem that automobile manufacturers commonly increase the precious metal content in aftertreatment systems to ensure vehicle exhaust emissions meet standards, thus reserving a high margin in the design of the aftertreatment system. However, the significant increase in precious metal prices has led to a substantial increase in the cost of the aftertreatment system.
[0005] In a first aspect, embodiments of this application provide a method for configuring a vehicle after-treatment system, the vehicle after-treatment system including a catalytic converter and a particulate filter, the method for configuring the vehicle after-treatment system including: Obtain the configuration of the catalytic converter and particulate filter that have passed vehicle exhaust emission tests; Keeping the particulate filter configuration unchanged, vehicle exhaust emission tests were conducted using different catalytic converter configurations to obtain the first test results. The catalytic converter configurations include the content of precious metals. The configuration of the catalytic converter that passed the vehicle exhaust emission test and has the highest cost performance was selected from the first test results. Keeping the selected catalytic converter configuration unchanged, vehicle exhaust emission tests were conducted using different particulate filter configurations to obtain a second test result; The optimal combination of particulate filter and catalytic converter was obtained by selecting the configuration that passed the vehicle exhaust emission test and had the best cost performance from the second test results.
[0006] Optionally, the vehicle exhaust emission test includes ambient temperature emission stability test, real-road emission stability test and extreme environment emission stability test, which are based on the national motor vehicle pollutant emission standards.
[0007] Optionally, the configuration of the catalytic converter may also include volume and coating technology, and the configuration of the particulate trap may include volume, material, and arrangement.
[0008] Optionally, the precious metals include platinum, palladium, and rhodium; the materials include cordierite, silicon carbide, and aluminum-titanium alloy; and the arrangement includes tight coupling, rear-mounted, and four-way catalytic converter.
[0009] Optionally, after selecting the configuration of the particulate filter that passes the vehicle exhaust emission test and has the highest cost-effectiveness from the second test results to obtain the optimal combination of particulate filter and catalytic converter, the following steps are included: Vehicle exhaust emissions were tested using multiple samples of the vehicle after-treatment system to obtain a third test result. The multiple samples used the optimal combination of particulate trap and catalytic converter configuration. Based on the results of the third test, it was determined whether the optimal combination of particulate trap and catalytic converter configuration was stable.
[0010] Optionally, after determining that the optimal combination of particulate trap and catalytic converter configuration is stable based on the third test results, the following steps are taken: Vehicle exhaust emission tests were conducted using multiple batches of products from the vehicle after-treatment system, resulting in a fourth test result. The multiple batches of products used an optimal combination of particulate filters and catalytic converters. Based on the results of the fourth test, it was determined whether the optimal combination of particulate trap and catalytic converter configuration was stable.
[0011] Secondly, embodiments of this application provide a vehicle after-treatment system configuration device, the vehicle after-treatment system including a catalytic converter and a particulate filter, the vehicle after-treatment system configuration device including: The acquisition module is used to acquire the configuration of the catalytic converter and particulate filter that have passed the vehicle exhaust emission test; The first test module is used to keep the configuration of the particulate filter unchanged and use different catalytic converter configurations to conduct vehicle exhaust emission tests and obtain the first test results. The configuration of the catalytic converter includes the content of precious metals. The first selection module is used to select the configuration of the catalytic converter that has passed the vehicle exhaust emission test and has the highest cost performance from the first test results. The second test module is used to keep the selected catalytic converter configuration unchanged, and use different particulate filter configurations to conduct vehicle exhaust emission tests and obtain the second test results. The second selection module is used to select the configuration of the particulate filter that passes the vehicle exhaust emission test and has the highest cost performance from the second test results, so as to obtain the optimal configuration combination of particulate filter and catalytic converter.
[0012] Optionally, the vehicle exhaust emission test includes ambient temperature emission stability test, real-road emission stability test and extreme environment emission stability test, which are based on the national motor vehicle pollutant emission standards.
[0013] Thirdly, embodiments of this application provide a vehicle after-processing system configuration device, the vehicle after-processing system configuration device including a processor, a memory, and a vehicle after-processing system configuration program stored in the memory and executable by the processor, wherein when the vehicle after-processing system configuration program is executed by the processor, it implements the steps of the vehicle after-processing system configuration method as described above.
[0014] Fourthly, embodiments of this application provide a readable storage medium storing a vehicle after-processing system configuration program, wherein when the vehicle after-processing system configuration program is executed by a processor, it implements the steps of the vehicle after-processing system configuration method as described above.
[0015] The beneficial effects of the technical solutions provided in this application include: In this embodiment, the configurations of the catalytic converter and particulate filter that have passed vehicle exhaust emission tests are obtained. Keeping the particulate filter configuration unchanged, vehicle exhaust emission tests are conducted using different catalytic converter configurations to obtain a first test result. The catalytic converter configuration includes the content of precious metals. From the first test result, the configuration of the catalytic converter that has passed the vehicle exhaust emission test and has the highest cost-effectiveness is selected. Keeping the selected catalytic converter configuration unchanged, vehicle exhaust emission tests are conducted using different particulate filter configurations to obtain a second test result. From the second test result, the configuration of the particulate filter that has passed the vehicle exhaust emission test and has the highest cost-effectiveness is selected to obtain the optimal combination of particulate filter and catalytic converter configurations. Through this embodiment, precious metals are the most expensive material component in the catalytic converter, typically accounting for 60-80% of the total cost of the catalytic converter, and are a major cost component of the aftertreatment system. Based on passing vehicle exhaust emission tests, the configurations of the particulate filter and catalytic converter are optimized to obtain the optimal combination of particulate filter and catalytic converter configurations. This achieves the optimal configuration of the vehicle aftertreatment system (especially the precious metal content) while meeting emission requirements, thus achieving the goal of cost reduction and efficiency improvement. Attached Figure Description
[0016] Figure 1 This is a first flowchart illustrating an embodiment of the vehicle after-treatment system configuration method of this application; Figure 2 This is a second flowchart illustrating an embodiment of the vehicle after-treatment system configuration method of this application. Figure 3 This is a schematic diagram of the third process of an embodiment of the vehicle after-treatment system configuration method of this application; Figure 4 A schematic diagram of functional modules of an embodiment of the vehicle after-treatment system configuration device of this application; Figure 5 This is a schematic diagram of the hardware structure of the vehicle after-processing system configuration device involved in the embodiments of this application. Detailed Implementation
[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0018] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0019] In a first aspect, embodiments of this application provide a method for configuring a vehicle after-treatment system.
[0020] In one embodiment, reference is made to Figure 1 , Figure 1 This is a schematic flowchart of an embodiment of the vehicle after-treatment system configuration method of this application, as shown below. Figure 1 As shown, the vehicle after-treatment system includes a catalytic converter and a particulate filter, and the configuration method of the vehicle after-treatment system includes: Step S10: Obtain the configuration of the catalytic converter and particulate filter that have passed the vehicle exhaust emission test.
[0021] In this embodiment, a baseline test is first conducted on a vehicle equipped with a standard catalytic converter and a standard particulate trap to determine the current emission level of the vehicle's after-treatment system. Specifically, the vehicle under test is placed on a chassis dynamometer and subjected to multiple ambient temperature Type I tests according to GB18352.6-2016 standards to ensure stable and reliable test data. Subsequently, a portable emission testing system (PEMS) is installed on the vehicle, and Real Driving Emissions (RDE) tests are conducted on actual roads to obtain real-world emission data. Finally, the vehicle is placed in a high- and low-temperature environmental chamber (e.g., -7°C and 35°C), and the road spectrum and gradient data obtained from the RDE tests are imported to conduct extreme environment simulation RDE tests. Through these three tests, the emission stability of the vehicle under different operating conditions is comprehensively evaluated, and a set of baseline configuration parameters for the catalytic converter and particulate trap that have passed vehicle exhaust emission tests is obtained. Only by establishing a reliable baseline can the effectiveness of subsequent optimization schemes be scientifically evaluated. The baseline configuration obtained through multi-dimensional testing ensures that subsequent optimization work is based on real and reliable data, avoiding errors in optimization direction due to initial data deviations, and providing an accurate reference for subsequent configuration optimization of catalytic converters and particulate traps.
[0022] Step S20: Keeping the configuration of the particulate filter unchanged, conduct vehicle exhaust emission tests using different catalytic converter configurations to obtain the first test result. The configuration of the catalytic converter includes the content of precious metals.
[0023] In this embodiment, the baseline particulate trap configuration determined in step S10 is used consistently, and the configuration parameters of the catalytic converter are systematically adjusted, such as adjusting the precious metal content (platinum, palladium, and rhodium), volume, and coating technology of the catalytic converter. Specifically, referring to the selection scheme matrix in Table 1, different combinations such as increasing precious metal content, increasing volume, standard TWC (three-way catalytic converter), changing coating technology, reducing volume, and reducing precious metal content are tested sequentially. For each combination, Type I and Type II tests are conducted according to the GB18352.6-2016 standard, and simulated RDE tests are carried out at -7℃ on the rotating drum, recording the concentration data of key emissions such as CO, HC, and NOx. Precious metals in the catalytic converter constitute the main cost component of the aftertreatment system (accounting for approximately 60-80% of the total cost of the catalytic converter) and have the most significant impact on emission performance. By fixing the particulate trap configuration and optimizing the catalytic converter individually, variables can be isolated, the impact of different catalytic converter configurations on emission performance can be accurately assessed, and the ambiguity of causal relationships caused by simultaneous changes in multiple variables can be avoided. This "single-factor control method" can effectively identify the key parameters that have the greatest impact on emission performance, providing a clear direction for subsequent optimization.
[0024] Table 1.
[0025] Step S30: Select the configuration of the catalytic converter that has passed the vehicle exhaust emission test and has the highest cost performance from the first test results.
[0026] In this embodiment, the first test results obtained in step S20 are comprehensively evaluated to establish a cost-effectiveness evaluation model. For example, cost-effectiveness = 1 / (cost coefficient × emission compliance coefficient), where the cost coefficient reflects the cost of materials such as precious metals, and the emission compliance coefficient reflects the ratio of the emission test results to the standard limits. In specific implementation, all configuration schemes that pass the emission test are first screened out, then the cost-effectiveness value of each scheme is calculated, and finally the scheme with the highest cost-effectiveness value is selected as the optimal catalytic converter configuration. For example, if the precious metal content of a certain configuration is reduced by 15%, but the emission test results still meet 95% of the standard limits, its cost is significantly reduced while the performance impact is limited, then this configuration may have a high cost-effectiveness. Simply pursuing the lowest cost may lead to non-compliance with emission standards, while excessively pursuing performance will significantly increase costs. By establishing a scientific cost-effectiveness evaluation model, the optimal balance between cost and performance can be found under the premise of meeting emission requirements. This data-based decision-making method avoids the subjectivity and uncertainty of traditional empiricism and ensures the objectivity and reliability of the optimization results.
[0027] In step S40, keeping the selected catalytic converter configuration unchanged, a vehicle exhaust emission test is conducted using different particulate filter configurations to obtain a second test result.
[0028] In this embodiment, the optimal catalytic converter configuration determined in step S30 is used consistently, and the configuration parameters of the particulate filter are systematically adjusted, including volume, material (such as cordierite, silicon carbide, and aluminum-titanium alloy), and arrangement (closely coupled, rear-mounted, and four-way catalytic converter). In specific implementation, the selection scheme matrix in Table 1 can be referenced to sequentially test different combinations such as increasing volume, standard GPF (gasoline particulate filter), changing the technical form, and reducing volume. For each combination, Type I and Type II tests are conducted according to GB18352.6-2016 standard, and simulated RDE tests are performed at -7℃ on a rotating drum, focusing on monitoring particulate matter (PM) and particulate number (PN) emission data. The optimization of the particulate filter should be based on the optimization of the catalytic converter, because the emission characteristics of the catalytic converter affect the generation and composition of particulate matter, thus affecting the working efficiency of the particulate filter. This "sequential optimization method" considers the mutual influence between components within the vehicle's aftertreatment system, avoiding suboptimal results caused by improper optimization order. By fixing the catalytic converter configuration, the impact of changes in particulate matter configuration on particulate matter emissions can be accurately assessed, providing a basis for selecting the optimal particulate matter filter solution.
[0029] Step S50: Select the configuration of the particulate filter that passes the vehicle exhaust emission test and has the highest cost performance from the second test results to obtain the optimal configuration combination of particulate filter and catalytic converter.
[0030] In this embodiment, the second test results obtained in step S40 are comprehensively evaluated using a cost-effectiveness evaluation model similar to that in step S30, but the weighting coefficients are adjusted to suit the characteristics of the particulate filter. Specifically, all configuration schemes that pass the particulate emission test are first screened out, then the cost-effectiveness value of each scheme is calculated, and finally, the scheme with the highest cost-effectiveness value is selected as the optimal particulate filter configuration. This configuration is then combined with the optimal catalytic converter configuration determined in step S30 to form the optimal configuration of the complete aftertreatment system. For example, if a particulate filter configuration uses silicon carbide material and is arranged in a tightly coupled manner, although the initial cost is slightly higher, its long service life and low regeneration frequency may result in better overall cost-effectiveness. The vehicle aftertreatment system is an organic whole, and the synergistic effect between its components has a significant impact on the final performance. By optimizing step by step and then integrating them, optimal matching of each component can be achieved while ensuring the overall performance of the system. This optimization method considers both the performance of individual components and the overall synergistic effect of the system, avoiding the problem of "local optima but global suboptimal".
[0031] In this embodiment, the above steps achieve systematic optimization of the vehicle's after-treatment system, ensuring emission compliance and significantly reducing system costs. Specifically, the step-by-step optimization strategy avoids the inefficiency of traditional "overall trial-and-error" methods; the establishment of a scientific cost-performance evaluation model achieves an optimal balance between cost and performance; and a multi-level verification mechanism ensures the reliability and robustness of the optimization scheme. Against the backdrop of continuously rising precious metal prices, this approach helps automakers effectively control after-treatment system costs while meeting increasingly stringent emission regulations, achieving genuine cost reduction and efficiency improvement.
[0032] Furthermore, in one embodiment, the vehicle exhaust emission test includes a normal temperature emission stability test, a real-road emission stability test, and an extreme environment emission stability test, wherein the normal temperature emission stability test, the real-road emission stability test, and the extreme environment emission stability test are based on the national motor vehicle pollutant emission standards.
[0033] In this embodiment, the ambient temperature emission stability test is conducted at 25±2℃, repeating the WLTC cycle more than 10 times to ensure that the repeatability error of the emission data is less than 5%. The real-world emission stability test covers various road types, including urban areas, suburbs, and highways, with a total mileage of no less than 100 kilometers. The extreme environment emission stability test is conducted at -7℃ and 35℃ respectively to simulate the vehicle emission characteristics under extreme climatic conditions. The ambient temperature emission stability test, the real-world emission stability test, and the extreme environment emission stability test can be conducted in accordance with the national motor vehicle pollutant emission standards. Through various types of detailed stability tests, it is possible to better cope with various complex environmental conditions (laboratory, real-world, and extreme environments). In addition, the standards for the three tests can be set to be no less than the national motor vehicle pollutant emission standards, for example, set at 90% of the limit of the China VI standard, that is, the test result must be lower than 90% of the standard limit to be considered "passing the test". Since the China VI standard only sets the bottom line of emission limits, in practical applications, a safety margin needs to be reserved to cope with factors such as production fluctuations and aging of use. By setting internal testing standards that are no lower than national standards, it can be ensured that mass-produced vehicles consistently meet regulatory requirements throughout their entire lifecycle, avoiding compliance risks caused by failing to meet minimum standards. This "high-standard, strict-requirement" testing strategy, while increasing testing costs in the short term, can significantly reduce recall risks and market complaints in the long run, resulting in significant economic and social benefits.
[0034] Furthermore, in one embodiment, the configuration of the catalytic converter further includes volume and coating technology, and the configuration of the particulate trap includes volume, material, and arrangement.
[0035] In this embodiment, the volume adjustment range of the catalytic converter is, for example, 80%-120% of the reference volume, and the coating technology includes single-layer coating, double-layer coating, and gradient coating; the volume adjustment range of the particulate filter is, for example, 70%-130% of the reference volume, and the material selection includes cordierite (low cost but poor heat resistance), silicon carbide (high cost but high heat resistance and filtration efficiency), and aluminum-titanium alloy (between the two); the arrangement methods include close coupling (close to the engine, fast ignition but high temperature), rear-mounted (away from the engine, low temperature but slow ignition), and four-way catalytic converter (integrated in the catalytic converter). In specific implementation, by designing an orthogonal experimental matrix, the influence of each parameter on emission performance is systematically evaluated, and key influencing factors are identified. The performance of the aftertreatment system is the result of the combined effect of multiple parameters, and the degree and direction of influence of different parameters on emission performance vary. Through scientific experimental design methods, the parameter space can be explored efficiently, avoiding the waste of resources caused by blind trial and error. This experimental design-based optimization method can obtain the maximum amount of information within a limited number of trials, significantly improving optimization efficiency and shortening the development cycle.
[0036] Furthermore, in one embodiment, the precious metal includes platinum, palladium, and rhodium, the material includes cordierite, silicon carbide, and aluminum-titanium alloy, and the arrangement includes tight coupling, rear-mounted, and four-way catalytic converter.
[0037] In this embodiment, for precious metal combinations, different configurations with platinum / palladium ratios ranging from 1:3 to 3:1 can be tested, as this ratio range has the most significant impact on the efficiency of three-way catalytic converters; rhodium content is typically maintained at 0.5-1.5 g / ft³, as it primarily affects NOx reduction efficiency. Regarding material selection, cordierite is suitable for cost-sensitive vehicles, silicon carbide is suitable for vehicles requiring high performance or long lifespan, and aluminum-titanium alloy serves as a compromise. The choice of arrangement needs to consider engine characteristics: high-speed engines are suitable for a tightly coupled arrangement for rapid ignition, while low-speed engines are more suitable for a rear-mounted arrangement to avoid high-temperature damage. Different materials and arrangements have different physicochemical properties and are suitable for different application scenarios. By establishing a mapping relationship between "application scenario - performance requirements - material properties," targeted optimization design can be achieved, avoiding performance waste or inadequacy caused by a "one-size-fits-all" approach. This scenario-based differentiated design strategy can maximize material performance and achieve a "just right" performance configuration, meeting requirements while avoiding over-design.
[0038] Furthermore, in one embodiment, reference is made to Figure 2 , Figure 2 This is a second flowchart illustrating an embodiment of the vehicle after-treatment system configuration method of this application, as shown below. Figure 2 As shown, after step S50, the following steps are included: Step S01: Vehicle exhaust emission test is performed using multiple samples from the vehicle aftertreatment system to obtain a third test result. The multiple samples use the optimal configuration combination of particulate trap and catalytic converter. Step S02: Based on the third test results, determine whether the optimal configuration combination of the particulate trap and catalytic converter is stable.
[0039] In this embodiment, 5-10 vehicle samples equipped with the optimal configuration combination of the vehicle after-treatment system are selected and repeatedly subjected to emission tests under the same test conditions, including normal temperature, real road, and extreme environment, collecting at least 30 sets of test data. The stability and consistency of the test results are evaluated using statistical analysis methods (such as control charts, process capability index CPK, etc.). For example, a CPK value greater than 1.33 for key emissions is required to be considered stable. If the stability does not meet the standard, the process returns to step S20 or S40 for fine-tuning and optimization. The test results of a single sample may be affected by random factors and cannot represent the consistency level of mass production. Through multi-sample testing, the robustness of the configuration combination can be evaluated, and potential process sensitivities can be identified. This "small-batch verification" strategy can identify and resolve potential problems before formal mass production, avoiding large-scale recalls due to design flaws and significantly reducing quality risks and economic losses.
[0040] Furthermore, in one embodiment, reference is made to Figure 3 , Figure 3 This is a third flowchart illustrating an embodiment of the vehicle after-treatment system configuration method of this application, as shown below. Figure 3 As shown, after determining the optimal combination of particulate trap and catalytic converter configuration based on the third test results, the following steps are taken: Step S03: Vehicle exhaust emission tests are conducted using multiple batch-produced products of the vehicle after-treatment system to obtain a fourth test result. The multiple batch-produced products use the optimal configuration combination of particulate trap and catalytic converter. Step S04: Based on the results of the fourth test, determine whether the optimal configuration combination of the particulate trap and the catalytic converter is stable.
[0041] In this embodiment, 20-30 mass-produced vehicles equipped with the optimal configuration combination of after-treatment systems are randomly selected from the production line and subjected to comprehensive emissions testing under the same test conditions. The focus is on evaluating the impact of process fluctuations during production on emissions performance, requiring that over 95% of the test results meet internal standards (90% of national standard limits). If stability is not met, the root cause is analyzed, which may include batch differences in raw materials, fluctuations in production processes, or accumulated assembly tolerances, and process control parameters are optimized accordingly. Laboratory environments differ significantly from mass production environments, and various fluctuation factors are unavoidable during mass production. Testing and verification with mass-produced vehicles ensures the feasibility of the optimized solution in a real production environment, avoiding the dilemma of "feasible in the laboratory but not in mass production." This "mass production verification" stage serves as a bridge between R&D and production, effectively reducing mass production risks and ensuring that optimization results are successfully transformed into actual economic benefits.
[0042] Secondly, embodiments of this application also provide a vehicle after-treatment system configuration device.
[0043] In one embodiment, reference is made to Figure 4 , Figure 4 This is a functional block diagram of an embodiment of the vehicle after-treatment system configuration device of this application, as shown below. Figure 4 As shown, the vehicle after-treatment system includes a catalytic converter and a particulate filter, and the vehicle after-treatment system configuration device includes: Acquisition module 10 is used to acquire the configuration of the catalytic converter and particulate filter that have passed the vehicle exhaust emission test; The first test module 20 is used to keep the configuration of the particulate filter unchanged and use different catalytic converter configurations to conduct vehicle exhaust emission tests and obtain the first test result. The configuration of the catalytic converter includes the content of precious metals. The first selection module 30 is used to select the configuration of the catalytic converter that passes the vehicle exhaust emission test and has the highest cost performance from the first test results. The second test module 40 is used to keep the selected catalytic converter configuration unchanged, and use different particulate filter configurations to conduct vehicle exhaust emission tests and obtain the second test results. The second selection module 50 is used to select the configuration of the particulate filter that passes the vehicle exhaust emission test and has the highest cost performance from the second test results, so as to obtain the optimal configuration combination of particulate filter and catalytic converter.
[0044] Furthermore, in one embodiment, the vehicle exhaust emission test includes a normal temperature emission stability test, a real-road emission stability test, and an extreme environment emission stability test, wherein the normal temperature emission stability test, the real-road emission stability test, and the extreme environment emission stability test are based on the national motor vehicle pollutant emission standards.
[0045] Furthermore, in one embodiment, the configuration of the catalytic converter further includes volume and coating technology, and the configuration of the particulate trap includes volume, material, and arrangement.
[0046] Furthermore, in one embodiment, the precious metal includes platinum, palladium, and rhodium, the material includes cordierite, silicon carbide, and aluminum-titanium alloy, and the arrangement includes tight coupling, rear-mounted, and four-way catalytic converter.
[0047] Furthermore, in one embodiment, the vehicle after-treatment system configuration device further includes a sample testing module for: Vehicle exhaust emissions were tested using multiple samples of the vehicle after-treatment system to obtain a third test result. The multiple samples used the optimal combination of particulate trap and catalytic converter configuration. Based on the results of the third test, it was determined whether the optimal combination of particulate trap and catalytic converter configuration was stable.
[0048] Furthermore, in one embodiment, the vehicle after-treatment system configuration device further includes a batch product testing module for: Vehicle exhaust emission tests were conducted using multiple batches of products from the vehicle after-treatment system, resulting in a fourth test result. The multiple batches of products used an optimal combination of particulate filters and catalytic converters. Based on the results of the fourth test, it was determined whether the optimal combination of particulate trap and catalytic converter configuration was stable.
[0049] The functions of each module in the above-mentioned vehicle after-treatment system configuration device correspond to the steps in the above-mentioned vehicle after-treatment system configuration method embodiment, and their functions and implementation processes will not be described in detail here.
[0050] Thirdly, embodiments of this application provide a vehicle after-processing system configuration device.
[0051] Reference Figure 5 , Figure 5 This is a schematic diagram of the hardware structure of the vehicle after-processing system configuration device involved in the embodiments of this application. In the embodiments of this application, the vehicle after-processing system configuration device may include a processor, a memory, a communication interface, and a communication bus.
[0052] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.
[0053] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces used to interconnect devices within the vehicle after-processing system configuration equipment, as well as interfaces used to interconnect the vehicle after-processing system configuration equipment with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.
[0054] Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0055] The processor can be a general-purpose processor, which can call the vehicle after-processing system configuration program stored in the memory and execute the vehicle after-processing system configuration method provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the vehicle after-processing system configuration program is called can be referred to in various embodiments of the vehicle after-processing system configuration method of this application, and will not be repeated here.
[0056] Those skilled in the art will understand that Figure 5 The hardware structure shown does not constitute a limitation of this application and may include more or fewer components than shown, or combine certain components, or have different component arrangements.
[0057] Fourthly, embodiments of this application also provide a readable storage medium.
[0058] The present application has a readable storage medium storing a vehicle after-processing system configuration program, wherein when the vehicle after-processing system configuration program is executed by a processor, it implements the steps of the vehicle after-processing system configuration method as described above.
[0059] The method implemented when the vehicle after-treatment system configuration program is executed can be referred to in various embodiments of the vehicle after-treatment system configuration method of this application, and will not be repeated here.
[0060] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0061] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.
[0062] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.
[0063] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.
[0064] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.
[0065] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.
[0066] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A method for configuring a vehicle after-treatment system, characterized in that, The vehicle after-treatment system includes a catalytic converter and a particulate filter, and the configuration method of the vehicle after-treatment system includes: Obtain the configuration of the catalytic converter and particulate filter that have passed vehicle exhaust emission tests; Keeping the particulate filter configuration unchanged, vehicle exhaust emission tests were conducted using different catalytic converter configurations to obtain the first test results. The catalytic converter configurations include the content of precious metals. The configuration of the catalytic converter that passed the vehicle exhaust emission test and has the highest cost performance was selected from the first test results. Keeping the selected catalytic converter configuration unchanged, vehicle exhaust emission tests were conducted using different particulate filter configurations to obtain a second test result; The optimal combination of particulate filter and catalytic converter was obtained by selecting the configuration that passed the vehicle exhaust emission test and had the best cost performance from the second test results.
2. The vehicle after-treatment system configuration method as described in claim 1, characterized in that, The vehicle exhaust emission test includes ambient temperature emission stability test, real-road emission stability test and extreme environment emission stability test. The ambient temperature emission stability test, real-road emission stability test and extreme environment emission stability test are based on the national motor vehicle pollutant emission standards.
3. The vehicle after-treatment system configuration method as described in claim 1, characterized in that, The configuration of the catalytic converter also includes volume and coating technology, and the configuration of the particulate trap includes volume, material and arrangement.
4. The vehicle after-treatment system configuration method as described in claim 3, characterized in that, The precious metals include platinum, palladium, and rhodium; the materials include cordierite, silicon carbide, and aluminum-titanium alloy; and the arrangement includes tight coupling, rear-mounted, and four-way catalytic converter.
5. The vehicle after-treatment system configuration method as described in claim 1, characterized in that, After selecting the configuration of the particulate filter that passes the vehicle exhaust emission test and has the highest cost-effectiveness from the second test results, and obtaining the optimal combination of particulate filter and catalytic converter, the following steps are included: Vehicle exhaust emissions were tested using multiple samples of the vehicle after-treatment system to obtain a third test result. The multiple samples used the optimal combination of particulate trap and catalytic converter configuration. Based on the results of the third test, it was determined whether the optimal combination of particulate trap and catalytic converter configuration was stable.
6. The vehicle after-treatment system configuration method as described in claim 5, characterized in that, After determining the optimal combination of particulate trap and catalytic converter configuration based on the third test results, the following was included: Vehicle exhaust emission tests were conducted using multiple batches of products from the vehicle after-treatment system, resulting in a fourth test result. The multiple batches of products used an optimal combination of particulate filters and catalytic converters. Based on the results of the fourth test, it was determined whether the optimal combination of particulate trap and catalytic converter configuration was stable.
7. A vehicle after-treatment system configuration device, characterized in that, The vehicle after-treatment system includes a catalytic converter and a particulate filter, and the vehicle after-treatment system configuration device includes: The acquisition module is used to acquire the configuration of the catalytic converter and particulate filter that have passed the vehicle exhaust emission test; The first test module is used to keep the configuration of the particulate filter unchanged and use different catalytic converter configurations to conduct vehicle exhaust emission tests and obtain the first test results. The configuration of the catalytic converter includes the content of precious metals. The first selection module is used to select the configuration of the catalytic converter that has passed the vehicle exhaust emission test and has the highest cost performance from the first test results. The second test module is used to keep the selected catalytic converter configuration unchanged, and use different particulate filter configurations to conduct vehicle exhaust emission tests and obtain the second test results. The second selection module is used to select the configuration of the particulate filter that passes the vehicle exhaust emission test and has the highest cost performance from the second test results, so as to obtain the optimal configuration combination of particulate filter and catalytic converter.
8. The vehicle after-treatment system configuration device as described in claim 7, characterized in that, The vehicle exhaust emission test includes ambient temperature emission stability test, real-road emission stability test and extreme environment emission stability test. The ambient temperature emission stability test, real-road emission stability test and extreme environment emission stability test are based on the national motor vehicle pollutant emission standards.
9. A vehicle after-treatment system configuration device, characterized in that, The vehicle after-processing system configuration device includes a processor, a memory, and a vehicle after-processing system configuration program stored in the memory and executable by the processor, wherein when the vehicle after-processing system configuration program is executed by the processor, it implements the steps of the vehicle after-processing system configuration method as described in any one of claims 1 to 6.
10. A readable storage medium, characterized in that, The readable storage medium stores a vehicle after-processing system configuration program, wherein when the vehicle after-processing system configuration program is executed by a processor, it implements the steps of the vehicle after-processing system configuration method as described in any one of claims 1 to 6.