CN118257677A

CN118257677A - Vehicle post-processing method, device, computer equipment and storage medium

Info

Publication number: CN118257677A
Application number: CN202410286915.7A
Authority: CN
Inventors: 赵路路; 孙业军; 薛梦; 周成龙
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Filing date: 2024-03-13
Publication date: 2024-06-28

Abstract

The present disclosure proposes a vehicle post-processing method, apparatus, computer device, and storage medium, the vehicle post-processing method comprising: monitoring a first temperature during vehicle aftertreatment; vehicle aftertreatment includes purifying vehicle emissions; when the first temperature is in a preset temperature range, calculating a target correction value of an oil injection combustion parameter of the vehicle engine at the first temperature; and correcting the fuel injection combustion parameter of the vehicle engine based on the target correction value. According to the embodiment of the disclosure, when the first temperature of the vehicle aftertreatment is in the preset temperature range, the fuel injection combustion parameters of the vehicle engine are adjusted, so that the original emission level can be reduced, the conversion efficiency of emissions is improved, and the emission control effect is improved, so that the emission circulation weighted emission reaches the standard.

Description

Vehicle post-processing method, device, computer equipment and storage medium

Technical Field

The disclosure relates to the technical field of vehicle aftertreatment, and in particular relates to a vehicle aftertreatment method, a device, computer equipment and a storage medium.

Background

The non-road transient emission control cycle (NRTC) refers to a standardized test cycle for evaluating and monitoring the exhaust emissions of non-road mobile machinery in actual operation. This test cycle is intended to simulate the operation of an off-road mobile machine under different conditions in order to evaluate its exhaust emission level.

During certain times (e.g., the first 150 s) of the non-road transient emission control cycle, the conversion requirements for emissions cannot be met due to the lower vehicle aftertreatment temperature, resulting in lower conversion efficiency of the vehicle emissions, such that the weighted emissions of the entire emission cycle are out of specification.

Disclosure of Invention

In view of this, the present disclosure proposes a vehicle aftertreatment method, apparatus, computer device, and storage medium to solve the problem of low conversion efficiency of vehicle emissions due to low vehicle aftertreatment temperature in the related art.

An embodiment of a first aspect of the present disclosure provides a vehicle aftertreatment method, including:

monitoring a first temperature during vehicle aftertreatment; the vehicle aftertreatment includes a purification treatment of vehicle emissions;

when the first temperature is in a preset temperature range, calculating a target correction value of an oil injection combustion parameter of a vehicle engine at the first temperature;

and correcting the fuel injection combustion parameter of the vehicle engine based on the target correction value.

According to the embodiment of the disclosure, when the first temperature in the vehicle aftertreatment process is in the preset temperature range, the fuel injection combustion parameters of the vehicle engine are adjusted, so that the original emission level can be reduced, the conversion efficiency of emissions is improved, the emission control effect is further improved, and the emission circulation weighted emission reaches the standard.

In an embodiment of the present disclosure, calculating a target correction value for a fuel injection combustion parameter of a vehicle engine at the first temperature includes:

determining a first correction coefficient corresponding to the first temperature;

Determining a second correction coefficient corresponding to a rotational speed value and a circulating oil supply amount of the vehicle engine;

The target correction value of the fuel injection combustion parameter is calculated based on the first correction coefficient, the second correction coefficient, and the operating time of the vehicle engine.

According to the embodiment of the disclosure, the corresponding first correction coefficient is determined through the first temperature, so that the influence of the corresponding emission conversion at different temperatures can be considered; determining a corresponding second correction coefficient through the rotating speed value and the circulating oil supply amount so as to finely adjust the fuel injection according to the actual working condition and ensure that the performance and the emission of the engine are in an optimal state; the target correction value of the fuel injection combustion parameter is calculated through the first correction coefficient, the second correction coefficient and the running time of the vehicle engine, so that the fuel injection combustion process of the engine can be optimized comprehensively in multiple aspects, the purposes of reducing the original emission level, improving the conversion efficiency of emissions and further improving the emission control effect and enabling the emission circulation weighted emission to reach the standard are achieved.

In an embodiment of the present disclosure, the determining a second correction coefficient corresponding to a rotational speed value and a circulating oil supply amount of a vehicle engine includes:

determining a correction coefficient set corresponding to a rotational speed value and a circulating oil supply amount of the vehicle engine based on a first mapping table; the first mapping table comprises a plurality of rotating speed values, a plurality of circulating oil supply amounts and a plurality of correction coefficient sets; wherein each rotational speed value is mapped with a circulating oil supply quantity, and the rotational speed value is mapped with a correction coefficient set;

and taking at least one fuel injection combustion parameter correction coefficient in the correction coefficient set as the second correction coefficient.

In an embodiment of the disclosure, the calculating the target correction value of the fuel injection combustion parameter based on the first correction coefficient, the second correction coefficient, and the running time of the vehicle engine includes:

If the running time of the vehicle engine is smaller than the preset running time, calculating a third correction coefficient based on the first correction coefficient and the second correction coefficient, and taking the third correction coefficient as a target correction value of the fuel injection combustion parameter;

And if the running time of the vehicle engine is greater than or equal to the preset running time, taking a preset correction coefficient as a target correction value of the fuel injection combustion parameter.

In an embodiment of the present disclosure, the target correction value includes a plurality of target correction coefficients; the correcting the fuel injection combustion parameter of the vehicle engine based on the target correction value includes:

correcting corresponding fuel injection combustion parameters in the vehicle engine based on any one target correction coefficient of the target correction coefficients;

Wherein the fuel injection combustion parameters include at least one of: the method comprises the following steps of main injection fuel injection quantity parameter, fuel injection pressure parameter and fuel injection time parameter, pre-injection fuel injection quantity parameter, fuel injection pressure parameter and fuel injection time parameter, and post-injection fuel injection quantity parameter, fuel injection pressure parameter and fuel injection time parameter.

According to the embodiment of the disclosure, through setting the corresponding target correction coefficient for each fuel injection combustion parameter of the vehicle engine, the original emission level can be correspondingly optimized and adjusted in the aspect of influencing the original emission level, so that the purposes of reducing the original emission level, improving the conversion efficiency of the emission, further improving the emission control effect and enabling the emission circulation weighted emission to reach the standard are achieved.

In the embodiment of the disclosure, the preset temperature range is 180-230 ℃.

In an embodiment of the present disclosure, the vehicle emissions are nitrogen oxides.

Embodiments of a second aspect of the present disclosure provide a vehicle aftertreatment device, including:

the temperature monitoring module is used for monitoring a first temperature in the vehicle aftertreatment process; the vehicle aftertreatment includes a purification treatment of vehicle emissions;

the correction value calculation module is used for calculating a target correction value of the fuel injection combustion parameter of the vehicle engine at the first temperature when the first temperature is in a preset temperature range;

and the parameter correction module is used for correcting the fuel injection combustion parameter of the vehicle engine based on the target correction value.

An embodiment of a third aspect of the present disclosure provides a computer apparatus, including a memory and a processor, where the memory and the processor are communicatively connected to each other, and the memory stores computer instructions, and the processor executes the computer instructions, thereby executing the vehicle aftertreatment method according to the first aspect.

Embodiments of the fourth aspect of the present disclosure provide a computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the vehicle aftertreatment method according to the first aspect described above.

Additional aspects and advantages of the disclosure 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 disclosure.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the disclosure. Also, like reference numerals are used to designate like parts throughout the figures.

In the drawings:

FIG. 1 illustrates a schematic diagram of a concept for SCR treatment of NOx provided by an embodiment of the present disclosure;

FIG. 2 illustrates a schematic diagram of SCR conversion efficiency versus temperature provided by an embodiment of the present disclosure;

FIG. 3 is a flow chart illustrating a method of vehicle aftertreatment according to an embodiment of the present disclosure;

FIG. 4 illustrates a schematic diagram of transient cycle venting and temperature venting provided by an embodiment of the present disclosure;

FIG. 5 illustrates a flow diagram of another vehicle aftertreatment method provided by an embodiment of the present disclosure;

FIG. 6 illustrates a flow diagram of another vehicle aftertreatment method provided by an embodiment of the present disclosure;

FIG. 7 illustrates a flow diagram of another vehicle aftertreatment method provided by an embodiment of the present disclosure;

FIG. 8 illustrates a flow chart of another vehicle aftertreatment method provided by an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a vehicle aftertreatment device according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of a computer device according to an embodiment of the disclosure;

fig. 11 shows a schematic diagram of a storage medium according to an embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is noted that unless otherwise indicated, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains.

Related terms referred to in the embodiments of the present disclosure are described below:

Off-road emissions refer to exhaust gases and particulate matter emitted by off-road vehicles (e.g., construction machinery, agricultural machinery, railroad locomotives, ships, etc.).

Post-treatment refers to treating the tail gas of a vehicle in a chemical reaction, filtration, reduction and other modes to reduce the emission of harmful pollutants.

The non-road transient emission control cycle (NRTC, non-road TRANSIENT CYCLE) is a test cycle for evaluating exhaust emissions of a non-road mobile machine (such as an excavator, a bulldozer, a loader, etc.) in actual use. The method is mainly used for measuring and evaluating the exhaust emission level of the off-road mobile machine under the transient working condition under the typical working task.

The nitrogen oxide (for example, NOx) formation conditions are: means for reducing NOx emissions by high temperature + oxygen enrichment + duration are divided into in-machine clean-up + selective catalytic Reduction (SCR, selective Catalytic Reduction) post-treatments; the principle of the SCR aftertreatment on NOx treatment is shown in figure 1 mainly by reducing the oxygen content and the combustion temperature in the in-cylinder combustion process: firstly, urea hydrolysis is carried out to obtain NH3, and the NH3 reacts with NOx to achieve the purpose of eliminating NOx. The conversion efficiency of the reaction process is closely related to the exhaust temperature, the relation is shown in fig. 2, and when the aftertreatment temperature is lower than 250 ℃, the conversion efficiency of SCR (selective catalytic reduction) to NOx is fast reduced, so that the weighted emission of the whole emission cycle exceeds the standard, and the related requirements cannot be met.

Technical scenarios related to the embodiments of the present disclosure are described below.

With the increasing demand for non-road emission, the emission control of nitrogen oxides is very challenging, the emission demand of European Stage V (more than or equal to 56 kW) NOx reaches 0.4 g/kW.h, the post-treatment temperature is lower 150s before the non-road transient emission control cycle (NRTC), and even if the necessary thermal management means are adopted, the temperature still cannot meet the conversion demand of NOx, so that the weighted emission of the whole emission cycle exceeds the standard and the related demand cannot be met. To this end, embodiments of the present disclosure enable an emission cycle to meet relevant requirements by adjusting fuel injection combustion parameters of a vehicle engine to reduce the raw emission level of the vehicle.

In accordance with the disclosed embodiments, a vehicle aftertreatment method embodiment is provided, it being noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order other than that illustrated herein.

In this embodiment, a vehicle aftertreatment method is provided, and fig. 3 is a flowchart of the vehicle aftertreatment method according to an embodiment of the disclosure, as shown in fig. 3, the flowchart including the steps of:

Step S101, monitoring a first temperature during vehicle aftertreatment.

Specifically, the first temperature during the vehicle aftertreatment process may be detected by the exhaust temperature sensor. Vehicle aftertreatment, among other things, includes purifying vehicle emissions, including but not limited to nitrogen oxides (such as NOx), which may be understood as a catalytic Reduction reaction of the nitrogen oxides in the emissions using a nitrogen oxide catalytic reducer (SCR, selective Catalytic Reduction), and the first temperature may be understood as the temperature at which the catalytic reaction occurs, i.e., SCR temperature, selective catalytic Reduction (SELECTIVE CATALYTIC Reduction, SCR).

Step S102, when the first temperature is in a preset temperature range, calculating a target correction value of an oil injection combustion parameter of the vehicle engine at the first temperature.

Specifically, the preset temperature range may be set according to practical situations, for example, 180-230 ℃.

The preset temperature range is set to 180-230 ℃ in this embodiment because: the inventors have found that when the aftertreatment temperature is in the range of 180-230 c (e.g., w2 in fig. 4) during a non-road transient emission control cycle (NRTC) for a vehicle, this temperature interval is over 70% of the weighted emission contribution (e.g., w1 in fig. 4) for the entire emission cycle, which is critical for the overall emission cycle emission control. Meanwhile, as the temperature in the temperature interval is lower, the conversion requirement of NOx cannot be met, so that the weighted emission of the whole emission cycle exceeds the standard, and the related requirement cannot be met. Therefore, when the first temperature is 180-230 ℃, a target correction value for adjusting the fuel injection combustion parameter of the vehicle engine needs to be calculated.

Wherein the relevant requirements specify emission limits for nitrogen oxides NOx as shown in table 1:

Discharge phase	Power segment	NOx limit (g/kWh)
			StageV	56≤P＜560	0.4

In some embodiments, as shown in fig. 5, the step S102 includes steps S1021-S1023:

Step S1021, determining a first correction coefficient corresponding to the first temperature.

Specifically, as shown in fig. 6, the temperature correction coefficient a, i.e., the first correction coefficient, may be determined by the SCR temperature. Determining a first correction coefficient corresponding to the first temperature through the first temperature and the second mapping table; the second mapping table comprises a plurality of first temperatures and a plurality of first correction coefficients corresponding to the first temperatures one by one.

Step S1022, determining a second correction coefficient corresponding to the rotational speed value and the circulation oil supply amount of the vehicle engine.

Specifically, as shown in fig. 6, the exhaust temperature correction basic value b, that is, the second correction coefficient, may be determined by the rotation speed and the circulation oil supply amount. The second correction factor may include a correction factor that may be understood as a correction factor for any one of a plurality of fuel injection combustion parameters of the vehicle engine; the second correction factor may also include a plurality of correction factors, which may be understood as a plurality of correction factors that are in one-to-one correspondence with a plurality of fuel injection combustion parameters of the vehicle engine.

In some embodiments, as shown in fig. 7, the step S1022 includes steps S701-S702:

Step S701, a correction coefficient set corresponding to a rotational speed value of the vehicle engine and a circulating oil supply amount is determined based on the first map.

Specifically, the first map includes a plurality of rotational speed values, a plurality of circulating oil supply amounts, and a plurality of correction coefficient sets. Wherein each rotational speed value is mapped to one of the circulating oil supply amounts and the rotational speed value is mapped to one of the correction coefficient sets, for example: the first map includes rotational speeds: a rotation speed value 1, a rotation speed value 2 and a rotation speed value 3; circulating oil supply amount: a circulating oil supply amount 1 and a circulating oil supply amount 2; the rotation speed value 1 and the circulating oil supply amount 1 can be mapped to form a correction coefficient set 1, the rotation speed value 1 and the circulating oil supply amount 2 can be mapped to form a correction coefficient set 2, the rotation speed value 2 and the circulating oil supply amount 1 can be mapped to form a correction coefficient set 3, the rotation speed value 2 and the circulating oil supply amount 2 can be mapped to form a correction coefficient set 4, the rotation speed value 3 and the circulating oil supply amount 1 can be mapped to form a correction coefficient set 5, and the rotation speed value 3 and the circulating oil supply amount 2 can be mapped to form a correction coefficient set 6.

Step S702, taking at least one fuel injection combustion parameter correction coefficient in the correction coefficient set as the second correction coefficient.

Specifically, the correction coefficient set includes a plurality of correction coefficients corresponding to the plurality of fuel injection combustion parameters one by one, and the correction coefficient of at least one fuel injection combustion parameter of the plurality of fuel injection combustion parameters may be used as the second correction coefficient.

Step S1023, calculating the target correction value of the fuel injection combustion parameter based on the first correction coefficient, the second correction coefficient, and the running time of the vehicle engine.

Specifically, as shown in fig. 6, the final combustion parameter correction d, that is, the target correction value of the above-described fuel injection combustion parameter, may be calculated by the operation time of the engine; the final combustion parameter correction d may also be calculated by manual adjustment, which is set based on the specific application scenario, without specific limitation.

In some embodiments, as shown in fig. 8, the step S1023 includes steps S801 to S802:

Step S801, if the running time of the vehicle engine is less than a preset running time, calculating a third correction coefficient based on the first correction coefficient and the second correction coefficient, and using the third correction coefficient as a target correction value of the fuel injection combustion parameter.

Step S802, if the running time of the vehicle engine is greater than or equal to the preset running time, taking a preset correction coefficient as a target correction value of the fuel injection combustion parameter.

In the above steps S801 to S802, the preset operation time may be set according to circumstances, and is not particularly limited herein. The preset correction factor may be 0. When the current operation time of the vehicle engine is less than the preset operation time, adding the first correction coefficient and the second correction coefficient to obtain a third correction coefficient (for example, "final combustion parameter d" in fig. 6); when the current running time of the vehicle engine is greater than or equal to the preset running time, the target correction value of the fuel injection combustion parameter can be directly set to zero.

And step S103, correcting the fuel injection combustion parameters of the vehicle engine based on the target correction value.

Specifically, when a plurality of fuel injection combustion parameter correction coefficients in the correction coefficient set are taken as the second correction coefficients, and the running time of the vehicle engine is smaller than the preset running time, a plurality of target correction coefficients may be calculated based on the first correction coefficients and the second correction coefficients, and the plurality of fuel injection combustion parameters of the vehicle engine may be corrected by the plurality of target correction coefficients.

In some embodiments, the step S103 includes step S1031:

step S1031, for any one of the plurality of target correction coefficients, corrects the corresponding fuel injection combustion parameter in the vehicle engine based on the target correction coefficient.

Wherein the fuel injection combustion parameters include at least one of: the method comprises the steps of main injection oil injection quantity parameter, main injection oil injection pressure parameter and main injection oil injection time parameter, pre-injection oil injection quantity parameter, pre-injection oil injection pressure parameter and pre-injection oil injection time parameter, post-injection oil injection quantity parameter, post-injection oil injection pressure parameter and post-injection oil injection time parameter.

Specifically, the above-mentioned correction of the corresponding fuel injection combustion parameter in the vehicle engine based on the target correction coefficient is shown in fig. 6, and the final combustion parameter f may be obtained by correcting the final combustion parameter d (i.e., the target correction coefficient) and the corresponding base combustion parameter e (i.e., the base combustion parameter e).

More specifically, the above step S1031 is described by way of example: when there are 3 target correction coefficients, namely: the method comprises the steps of adjusting the main injection oil injection quantity parameter of a vehicle engine by using the target correction coefficient 1, adjusting the pre-injection oil injection quantity parameter of the vehicle engine by using the target correction coefficient 2, and adjusting the post-injection oil injection quantity parameter of the vehicle engine by using the target correction coefficient 3 if the target correction coefficient 1 corresponding to the main injection oil injection quantity parameter, the target correction coefficient 2 corresponding to the pre-injection oil injection quantity parameter and the target correction coefficient 3 corresponding to the post-injection oil injection quantity parameter are corresponding to the main injection oil injection quantity parameter.

Corresponding to the implementation manner of the vehicle aftertreatment method, the embodiment of the disclosure further provides a vehicle aftertreatment device, which is used for executing the vehicle aftertreatment method according to any one of the embodiments illustrated in fig. 1 to 8. As shown in fig. 9, the vehicle aftertreatment device includes:

Optionally, the correction value calculating module is further configured to: determining a first correction coefficient corresponding to the first temperature; determining a second correction coefficient corresponding to a rotational speed value and a circulating oil supply amount of the vehicle engine; the target correction value of the fuel injection combustion parameter is calculated based on the first correction coefficient, the second correction coefficient, and the operating time of the vehicle engine.

Optionally, the correction value calculating module is further configured to: determining a correction coefficient set corresponding to a rotational speed value and a circulating oil supply amount of the vehicle engine based on a first mapping table; the first mapping table comprises a plurality of rotating speed values, a plurality of circulating oil supply amounts and a plurality of correction coefficient sets; wherein each rotational speed value is mapped with a circulating oil supply quantity, and the rotational speed value is mapped with a correction coefficient set; and taking at least one fuel injection combustion parameter correction coefficient in the correction coefficient set as the second correction coefficient.

Optionally, the correction value calculating module is further configured to: if the running time of the vehicle engine is smaller than the preset running time, calculating a third correction coefficient based on the first correction coefficient and the second correction coefficient, and taking the third correction coefficient as a target correction value of the fuel injection combustion parameter; and if the running time of the vehicle engine is greater than or equal to the preset running time, taking a preset correction coefficient as a target correction value of the fuel injection combustion parameter.

Optionally, the target correction value includes a plurality of target correction coefficients; the parameter correction module is also used for: correcting corresponding fuel injection combustion parameters in the vehicle engine based on any one target correction coefficient of the target correction coefficients; wherein the fuel injection combustion parameters include at least one of: the method comprises the following steps of main injection fuel injection quantity parameter, fuel injection pressure parameter and fuel injection time parameter, pre-injection fuel injection quantity parameter, fuel injection pressure parameter and fuel injection time parameter, and post-injection fuel injection quantity parameter, fuel injection pressure parameter and fuel injection time parameter.

Optionally, the preset temperature range is 180-230 ℃.

Optionally, the vehicle emissions are nitrogen oxides.

The vehicle aftertreatment device provided by the above-described embodiment of the present disclosure and the vehicle aftertreatment method provided by the embodiment of the present disclosure have the same advantageous effects as the method adopted, operated or implemented by the application program stored therein, in view of the same inventive concept.

The embodiment of the disclosure also provides a computer device for executing the vehicle aftertreatment method. Referring to fig. 10, a schematic diagram of a computer device provided by some embodiments of the present disclosure is shown. As shown in fig. 10, the computer device 10 includes: a processor 1000, a memory 1001, a bus 1002 and a communication interface 1003, the processor 1000, the communication interface 1003 and the memory 1001 being connected by the bus 1002; the memory 1001 stores a computer program executable on the processor 1000, and the processor 1000 executes the vehicle aftertreatment method according to any one of the embodiments illustrated in fig. 1 to 8 of the present disclosure when the computer program is executed.

The memory 1001 may include a high-speed random access memory (Random Access Memory, RAM), and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is implemented via at least one communication interface 1003 (which may be wired or wireless), the internet, a wide area network, a local network, a metropolitan area network, etc. may be used.

Bus 1002 may be an ISA bus, a PCI bus, or an EISA bus, among others. The buses may be classified as address buses, data buses, control buses, etc. The memory 1001 is configured to store a program, and the processor 1000 executes the program after receiving an execution instruction, and the vehicle aftertreatment method disclosed in any one of the foregoing embodiments illustrated in fig. 1 to 8 may be applied to the processor 1000 or implemented by the processor 1000.

The processor 1000 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the methods described above may be performed by integrated logic circuitry in hardware or instructions in software in processor 1000. The processor 1000 may be a general-purpose processor, including a central processing unit (Central Processing Unit, abbreviated as CPU), a network processor (Network Processor, abbreviated as NP), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks of the disclosure in the embodiments of the disclosure may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present disclosure may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. Which is located in a memory 1001 and the processor 1000 reads the information in the memory 1001 and in connection with its hardware performs the steps of the method described above.

The computer device provided by the embodiment of the present disclosure and the vehicle aftertreatment method provided by the embodiment of the present disclosure are the same inventive concept, and have the same beneficial effects as the method adopted, operated or implemented by the same.

The present disclosure further provides a computer readable storage medium corresponding to the vehicle aftertreatment method provided in the foregoing embodiments, referring to fig. 11, the computer readable storage medium is shown as an optical disc 30, on which a computer program (i.e. a program product) is stored, which when executed by a processor, performs the vehicle aftertreatment method provided in any of the foregoing embodiments.

It should be noted that examples of the computer readable storage medium may also include, but are not limited to, a phase change memory (PRAM), a Static Random Access Memory (SRAM), a Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a flash memory, or other optical or magnetic storage medium, which will not be described in detail herein.

The computer-readable storage medium provided by the above-described embodiments of the present disclosure has the same advantageous effects as the method adopted, operated or implemented by the application program stored therein, for the same inventive concept as the vehicle aftertreatment method provided by the embodiments of the present disclosure.

It should be noted that:

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the disclosure may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the following schematic diagram: i.e., the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the disclosure and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

While the invention has been described with respect to the preferred embodiments, it will be apparent to those skilled in the art that various changes and substitutions can be made herein without departing from the scope of the invention. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A method of vehicle aftertreatment, the method comprising:

2. The method of claim 1, wherein calculating a target correction value for a fuel injection combustion parameter of a vehicle engine at the first temperature comprises:

3. The method of claim 2, wherein determining a second correction factor corresponding to a rotational speed value of the vehicle engine and the amount of recirculated fuel comprises:

4. A method according to claim 2 or 3, wherein said calculating said target correction value of said fuel injection combustion parameter based on said first correction coefficient, said second correction coefficient and a running time of said vehicle engine comprises:

5. The method of claim 4, wherein the target correction value comprises a plurality of target correction coefficients; the correcting the fuel injection combustion parameter of the vehicle engine based on the target correction value includes:

6. The method according to claim 1 or 2, wherein the predetermined temperature range is 180-230 ℃.

7. The method of claim 1 or 2, wherein the vehicle emissions are nitrogen oxides.

8. A vehicle aftertreatment device, the device comprising:

9. A computer device, comprising:

a memory and a processor in communication with each other, the memory having stored therein computer instructions that, upon execution, perform the vehicle aftertreatment method of any one of claims 1-7.

10. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the vehicle aftertreatment method of any one of claims 1 to 7.