Carbon Content Recycling Monitoring Method, Device, Equipment and Storage Medium

Abstract

The present invention belongs to the technical field of automobiles, and discloses a carbon amount regeneration monitoring method, device, equipment and storage medium. The method includes: when the vehicle is in the regeneration process, real-time obtaining the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time; querying a first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount; querying a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter; determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time. By the above method, the regeneration process of the particulate filter is monitored, and the influence of the current carbon amount of the particulate filter, the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter on the combustion rate is considered, thereby improving the monitoring accuracy of the carbon regeneration process.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and in particular, to a method, device, equipment and storage medium for monitoring carbon regeneration amount. Background Art

[0002] The regeneration safety of a GPF (gasoline particulate filter) is one of the most important links for the stable operation of the engine after-treatment system, which is mainly affected by factors such as regeneration temperature control, carbon loading during regeneration, and regeneration working conditions. To ensure the normal operation of the vehicle system, it is necessary to monitor the regeneration process of the GPF. Currently, generally after the GPF is regenerated, the remaining carbon amount is calibrated again through a differential pressure model, and the regeneration process cannot be monitored.

[0003] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a method, device, equipment and storage medium for monitoring carbon regeneration amount, aiming to solve the technical problem that the current vehicle cannot monitor the regeneration process.

[0005] To achieve the above purpose, the present invention provides a method for monitoring carbon regeneration amount, the method comprising the following steps:

[0006] When the vehicle is in the regeneration process, obtain the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time in real time;

[0007] Query a first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount;

[0008] Query a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter;

[0009] Determine the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time.

[0010] Optionally, before the step of obtaining the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time in real time when the vehicle is in the regeneration process, the method further comprises:

[0011] Conduct a regeneration combustion rate test according to a preset maximum carbon loading under the conditions of a fixed temperature and a fixed excess air coefficient;

[0012] Fit a curve of carbon amount and regeneration rate according to the test results;

[0013] Construct a first preset table based on the curve of carbon amount and regeneration rate.

[0014] Optionally, the regenerative combustion rate test performed at a fixed temperature and a fixed excess air coefficient according to a preset maximum carbon loading includes:

[0015] Determining a plurality of segmented carbon loading ranges according to the preset maximum carbon loading at a fixed temperature and a fixed excess air coefficient;

[0016] Performing a regenerative combustion rate test based on the plurality of segmented carbon loading ranges, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time corresponding to each segmented carbon loading range.

[0017] Optionally, the fitting of the carbon amount and the regeneration rate curve according to the test results includes:

[0018] Determining the segmented regeneration rate corresponding to each segmented carbon loading range according to the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time;

[0019] Fitting the carbon amount and the regeneration rate curve according to the plurality of segmented carbon loading ranges and the segmented regeneration rate.

[0020] Optionally, before the method further includes, when the vehicle is in the regeneration process, acquiring the current carbon amount, the oxygen flow rate at the inlet of the particulate trap, the temperature of the particulate trap, and the regeneration time in real time:

[0021] Performing a regenerative combustion rate test according to a preset remaining carbon amount under the conditions of different oxygen flow rates at the inlet of the particulate trap test and different temperatures of the particulate trap test, wherein the regeneration stops when the carbon amount inside the particulate trap reaches the preset remaining carbon amount;

[0022] Determining the target regenerative combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate trap test and the temperature of the particulate trap test according to the test results;

[0023] Constructing a second preset table based on the oxygen flow rate at the inlet of the particulate trap test, the temperature of the particulate trap test, and the target regenerative combustion rate coefficient.

[0024] Optionally, the determining of the target regenerative combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate trap test and the temperature of the particulate trap test according to the test results includes:

[0025] Determining the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time according to the test results;

[0026] Determining the fixed regeneration rate corresponding to the oxygen flow rate at the inlet of the particulate trap test and the temperature of the particulate trap test according to the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time;

[0027] Determine a corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and the preset regeneration rate.

[0028] Optionally, after determining a corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time, the method further includes:

[0029] Determine a remaining carbon load according to the current carbon amount and the carbon regeneration amount, so as to monitor the remaining carbon amount in the vehicle regeneration process.

[0030] In addition, to achieve the above object, the present invention further provides a carbon amount regeneration monitoring device, and the carbon amount regeneration monitoring device includes:

[0031] An acquisition module, configured to, when the vehicle is in a regeneration process, acquire in real time the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time;

[0032] A query module, configured to query a first preset table according to the current carbon amount to determine a regeneration rate corresponding to the current carbon amount;

[0033] The query module is further configured to query a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter;

[0034] A determination module, configured to determine a corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time.

[0035] In addition, to achieve the above object, the present invention further provides a carbon amount regeneration monitoring device, and the carbon amount regeneration monitoring device includes: a memory, a processor, and a carbon amount regeneration monitoring program stored on the memory and executable on the processor, and the carbon amount regeneration monitoring program is configured to implement the carbon amount regeneration monitoring method as described above.

[0036] In addition, to achieve the above object, the present invention further provides a storage medium, on which a carbon amount regeneration monitoring program is stored, and when the carbon amount regeneration monitoring program is executed by a processor, the carbon amount regeneration monitoring method as described above is implemented.

[0037] When the vehicle is in the regeneration process, the present invention obtains the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time in real time; queries a first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount; queries a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter; determines the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time. Through the above method, the regeneration process of the particulate filter is monitored, the influence of the current carbon amount of the particulate filter, the oxygen flow rate at the inlet of the particulate filter, and the temperature of the particulate filter on the combustion rate is considered, the monitoring accuracy of the carbon regeneration process is improved, and the insufficient regeneration of the GPF or the waste of fuel is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic structural diagram of a carbon amount regeneration monitoring device for a hardware operating environment related to the solution of an embodiment of the present invention;

[0039] Figure 2 is a schematic flowchart of the first embodiment of the carbon amount regeneration monitoring method of the present invention;

[0040] Figure 3 is a schematic flowchart of the second embodiment of the carbon amount regeneration monitoring method of the present invention;

[0041] Figure 4 is a schematic flowchart of the third embodiment of the carbon amount regeneration monitoring method of the present invention;

[0042] Figure 5 is a structural block diagram of the first embodiment of the carbon amount regeneration monitoring device of the present invention.

[0043] The realization, functional features, and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] Refer to Figure 1 , Figure 1 is a schematic structural diagram of a carbon amount regeneration monitoring device for a hardware operating environment related to the solution of an embodiment of the present invention.

[0046] As Figure 1As shown, the carbon content regeneration monitoring device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard. Optionally, the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed Random Access Memory (RAM) or a stable Non-Volatile Memory (NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0047] Those skilled in the art can understand that Figure 1 the structure shown in does not constitute a limitation on the carbon content regeneration monitoring device, and it may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0048] As Figure 1 shown, the memory 1005, as a storage medium, may include an operating system, a network communication module, a user interface module, and a carbon content regeneration monitoring program.

[0049] In Figure 1 the carbon content regeneration monitoring device shown, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the carbon content regeneration monitoring device of the present invention may be arranged in the carbon content regeneration monitoring device. The carbon content regeneration monitoring device calls the carbon content regeneration monitoring program stored in the memory 1005 through the processor 1001 and executes the carbon content regeneration monitoring method provided by the embodiments of the present invention.

[0050] The embodiments of the present invention provide a carbon content regeneration monitoring method. Referring to Figure 2 , Figure 2 it is a schematic flowchart of the first embodiment of the carbon content regeneration monitoring method of the present invention.

[0051] In this embodiment, the carbon content regeneration monitoring method includes the following steps:

[0052] Step S10: When the vehicle is in the regeneration process, obtain the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time in real time.

[0053] It can be understood that the execution subject of this embodiment is a carbon amount regeneration monitoring device. The carbon amount regeneration monitoring device can be an in-vehicle electronic control unit or other devices installed on the vehicle. This embodiment is described by taking the in-vehicle electronic control unit as an example.

[0054] It should be noted that when the vehicle is in the regeneration process, the GPF warning light will be displayed on the vehicle instrument panel. If it is continuously displayed, it means that the regeneration is not completed. Optionally, before step S10, the regeneration of the GPF is achieved by controlling the ignition angle and the air-fuel ratio; the GPF is electrically heated through the GPF heating circuit to achieve the regeneration of the GPF; when the vehicle is coasting or decelerating, the regeneration of the GPF is achieved by cutting off the engine fuel supply.

[0055] It should be understood that the regeneration of the GPF refers to using external energy to increase the temperature inside the GPF so that the particulate matter catches fire and burns, thereby achieving the purpose of removing the particulate emissions inside the GPF. The current carbon amount refers to the carbon amount that needs to be regenerated in the current particulate filter. The regeneration time refers to the duration of the regeneration process from the start of vehicle regeneration to the time when data is obtained, and it can also include the regeneration start time and the regeneration end time (i.e., the data acquisition moment). In a specific implementation, the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, and the temperature of the particulate filter are obtained according to the sensors arranged on the particulate filter.

[0056] Step S20: Query a first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount.

[0057] It should be noted that the first preset table is a relationship table between the carbon amount and the regeneration rate determined in advance according to data calibration. By querying the first preset table based on the current carbon amount, the regeneration rate of the corresponding regeneration condition can be obtained.

[0058] Step S30: Query a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter.

[0059] It should be understood that the second preset table is a relationship table between the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration combustion rate coefficient determined in advance according to data calibration. By querying the second preset table based on the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter, the regeneration combustion rate coefficient of the corresponding regeneration condition can be obtained.

[0060] Step S40: Determine the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time.

[0061] It should be noted that the carbon regeneration amount is calculated by the following model formula:

[0062]

[0063] where M is the carbon regeneration amount; t 1 is the start time of regeneration; t 2 is the end time of regeneration; V 0 is the regeneration rate; R is the regeneration combustion rate coefficient.

[0064] Further, after the step S40, the method further includes: determining the remaining carbon load according to the current carbon amount and the carbon regeneration amount, so as to monitor the remaining carbon amount in the vehicle regeneration process.

[0065] It should be noted that the current carbon amount refers to the carbon load before the regeneration of the particulate trap. By subtracting the carbon regeneration amount from the carbon load before regeneration, the remaining carbon load is obtained. When the remaining carbon amount is 0, it indicates that the GPF regeneration is completed, and the warning light on the vehicle instrument is eliminated. In this embodiment, the carbon combustion situation during the regeneration process is accurately monitored, the carbon amount burned during regeneration is calculated, and at the same time the remaining carbon amount is obtained, which has great significance for GPF regeneration control, GPF carrier protection, etc.

[0066] In this embodiment, when the vehicle is in the regeneration process, the current carbon amount, the oxygen flow rate at the inlet of the particulate trap, the temperature of the particulate trap, and the regeneration time are obtained in real time; the regeneration rate corresponding to the current carbon amount is determined by querying the first preset table according to the current carbon amount; the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate trap and the temperature of the particulate trap is obtained by querying the second preset table according to the oxygen flow rate at the inlet of the particulate trap and the temperature of the particulate trap; the corresponding carbon regeneration amount is determined according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time. Through the above method, the regeneration process of the particulate trap is monitored, the influence of the current carbon amount, the oxygen flow rate at the inlet of the particulate trap, and the temperature of the particulate trap on the combustion rate is considered, the monitoring accuracy of the carbon regeneration process is improved, and the insufficient GPF regeneration or fuel waste is avoided.

[0067] Reference Figure 3 , Figure 3 is the schematic flowchart of the second embodiment of the carbon amount regeneration monitoring method of the present invention.

[0068] Based on the above first embodiment, before the step S10 of the carbon amount regeneration monitoring method of this embodiment, it further includes:

[0069] Step S101: Under the conditions of a fixed temperature and a fixed excess air coefficient, conduct a regeneration combustion rate test according to a preset maximum carbon loading.

[0070] It should be understood that the fixed temperature and the fixed excess air coefficient in this embodiment are the optimal temperature and the optimal excess air coefficient determined in advance according to the test. The temperature of the particulate trap is controlled to reach the fixed temperature through the bench, and the excess air coefficient at the inlet is the fixed excess air coefficient. Under this condition, a regeneration combustion rate test is conducted according to the preset maximum carbon loading. In a specific implementation, the fixed temperature is 800 °C, and the fixed excess air coefficient is 1.1. Specifically, when the engine burns fully under ideal conditions, the air-fuel ratio = air mass / fuel mass = 14.6, and the excess air coefficient = actual air-fuel ratio / air-fuel ratio under ideal conditions = actual air-fuel ratio / 14.6. In a specific implementation, to make the carbon in the GPF burn, it is necessary that there is excess air oxygen remaining in the exhaust system after the engine combustion, that is, in this embodiment, by increasing the air mass, the excess air coefficient = 1.1.

[0071] Specifically, step S101 includes: determining a plurality of segmented carbon loading intervals according to the preset maximum carbon loading under the conditions of a fixed temperature and a fixed excess air coefficient; conducting a regeneration combustion rate test based on the plurality of segmented carbon loading intervals, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time corresponding to each segmented carbon loading interval.

[0072] It should be noted that the preset maximum carbon loading is the maximum carbon loading determined according to the GPF specification, such as 10 g. The plurality of segmented carbon loading intervals are 10 - 8 g, 8 - 6 g, 6 - 4 g, 4 - 2 g, 2 - 0 g respectively. Control the GPF to burn from 10 g to 8 g, from 8 g to 6 g... and so on according to the plurality of segmented carbon loading intervals to achieve a segmented regeneration combustion rate test. Thoroughly clean the carbon before the regeneration combustion rate test to obtain the mass of the GPF without load, accumulate carbon to the maximum carbon loading, weigh the GPF before and after each segmented test, and record the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time.

[0073] Step S102: Fit a carbon amount and regeneration rate curve according to the test results.

[0074] Specifically, step S102 includes: determining the segmented regeneration rate corresponding to each segmented carbon loading interval according to the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time; fitting a carbon amount and regeneration rate curve according to the plurality of segmented carbon loading intervals and the segmented regeneration rate.

[0075] It should be understood that the corresponding segmented regeneration rate is calculated based on the test results of each segmented carbon loading range, and the carbon amount and regeneration rate curve are fitted based on multiple segmented carbon loading ranges and the corresponding segmented regeneration rates. Specifically, the segmented regeneration rate = (actual carbon amount before regeneration - actual carbon amount after regeneration) / regeneration time.

[0076] Step S103: Construct a first preset table based on the carbon amount and regeneration rate curve.

[0077] It should be noted that points are taken on the carbon amount and regeneration rate curve at a certain frequency to determine several points on the carbon amount and regeneration rate curve, determine the carbon amount and regeneration rate corresponding to each point, and construct a first preset table based on the carbon amount and the corresponding regeneration rate.

[0078] In this embodiment, a regeneration combustion rate model of the particulate filter is established in advance based on tests, a corresponding first preset table is constructed, and the regeneration process of the particulate filter is monitored based on the first preset table, considering the influence of the current carbon amount of the particulate filter, the oxygen flow rate at the inlet of the particulate filter, and the temperature of the particulate filter on the combustion rate, improving the monitoring accuracy of the carbon regeneration process, which is of great significance for GPF regeneration control, GPF carrier protection, etc., and avoiding insufficient GPF regeneration or waste of fuel.

[0079] Reference Figure 4 , Figure 4 is a schematic flowchart of the third embodiment of the carbon amount regeneration monitoring method of the present invention.

[0080] Based on the above first embodiment, before the step S10 of the carbon amount regeneration monitoring method in this embodiment, it further includes:

[0081] Step S104: Under the conditions of different oxygen flow rates at the inlet of the particulate filter test and different temperatures of the particulate filter test, conduct a regeneration combustion rate test according to a preset remaining carbon amount, where the regeneration stops when the carbon amount inside the particulate filter reaches the preset remaining carbon amount.

[0082] It can be understood that different oxygen flow rates at the inlet of the particulate filter test and different temperatures of the particulate filter test are set through bench tests, the GPF is pre-carbonized to a certain carbon amount in advance, and then the GPF is controlled to enter the regeneration combustion rate test until the internal carbon amount reaches the preset remaining carbon amount. For example, the GPF is carbonized to 6 g and the regeneration combustion rate test is carried out until the internal carbon amount reaches 4 g. Record the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time corresponding to different oxygen flow rates at the inlet of the particulate filter test and different temperatures of the particulate filter test.

[0083] Step S105: Determine the target regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter test and the temperature of the particulate filter test according to the test results.

[0084] Specifically, step S105 includes: determining the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time according to the test results; determining the fixed regeneration rate corresponding to the test inlet oxygen flow rate of the particulate filter and the test temperature of the particulate filter according to the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time; and determining the corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and the preset regeneration rate.

[0085] It should be noted that according to the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time recorded in the regeneration combustion rate test, it is calculated that: fixed regeneration rate = (carbon amount before regeneration - carbon amount after regeneration) / target regeneration time. The regeneration rate obtained by conducting the above regeneration combustion rate test under the conditions that the GPF temperature is 800°C and the excess air coefficient at the GPF inlet is 1.1 is the preset regeneration rate, and the regeneration combustion rate coefficient corresponding to the preset regeneration rate is set to 1, and the regeneration combustion rate coefficient corresponding to the condition where the inlet oxygen flow rate is 0 is set to 0. The target regeneration combustion rate coefficients corresponding to the test inlet oxygen flow rates of different particulate filters and the test temperatures of different particulate filters are obtained by dividing the fixed regeneration rates corresponding to the test inlet oxygen flow rates of different particulate filters and the test temperatures of different particulate filters by the preset regeneration rate.

[0086] Step S106: Construct a second preset table based on the test inlet oxygen flow rate of the particulate filter, the test temperature of the particulate filter, and the target regeneration combustion rate coefficient.

[0087] In this embodiment, a corresponding second preset table is constructed in advance based on the regeneration combustion rate test, and the regeneration process of the particulate filter is monitored based on the second preset table, taking into account the influence of the current carbon amount of the particulate filter, the inlet oxygen flow rate of the particulate filter, and the temperature of the particulate filter on the combustion rate, improving the monitoring accuracy of the carbon regeneration process, which is of great significance for GPF regeneration control, GPF carrier protection, etc., and avoiding insufficient GPF regeneration or waste of fuel.

[0088] In addition, an embodiment of the present invention also proposes a storage medium, on which a carbon amount regeneration monitoring program is stored. When the carbon amount regeneration monitoring program is executed by a processor, the carbon amount regeneration monitoring method as described above is implemented.

[0089] Since this storage medium adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated herein one by one.

[0090] Refer to Figure 5 , Figure 5 which is the structural block diagram of the first embodiment of the carbon amount regeneration monitoring device of the present invention.

[0091] As Figure 5As shown in the figure, the carbon regeneration monitoring device proposed in the embodiment of the present invention includes:

[0092] An acquisition module 10, configured to, when the vehicle is in the regeneration process, acquire the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time in real time.

[0093] A query module 20, configured to query a first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount.

[0094] The query module 20 is further configured to query a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter.

[0095] A determination module 30, configured to determine the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time.

[0096] It should be understood that the above is only an example for illustration and does not constitute any limitation to the technical solution of the present invention. In specific applications, those skilled in the art can set according to needs, and the present invention does not limit this.

[0097] In this embodiment, when the vehicle is in the regeneration process, the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time are acquired in real time; a first preset table is queried according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount; a second preset table is queried according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter; the corresponding carbon regeneration amount is determined according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time. Through the above method, the regeneration process of the particulate filter is monitored, the influence of the current carbon amount of the particulate filter, the oxygen flow rate at the inlet of the particulate filter, and the temperature of the particulate filter on the combustion rate is considered, the monitoring accuracy of the carbon regeneration process is improved, and the insufficient regeneration of the GPF or the waste of fuel is avoided.

[0098] It should be noted that the above-described work process is only illustrative and does not limit the protection scope of the present invention. In actual applications, those skilled in the art can select some or all of them according to actual needs to achieve the purpose of the solution of this embodiment, and there is no limitation here.

[0099] In addition, for the technical details not described in detail in this embodiment, reference can be made to the carbon regeneration monitoring method provided in any embodiment of the present invention, which will not be elaborated here.

[0100] In one embodiment, the carbon regeneration monitoring device further includes a first table construction module;

[0101] The first table construction module is configured to perform a regeneration combustion rate test according to a preset maximum carbon loading under the conditions of a fixed temperature and a fixed excess air coefficient, fit a carbon amount and a regeneration rate curve based on the test results, and construct a first preset table based on the carbon amount and the regeneration rate curve.

[0102] In one embodiment, the carbon amount regeneration monitoring device further includes a test module;

[0103] The test module is configured to determine a plurality of segmented carbon loading intervals according to a preset maximum carbon loading under the conditions of a fixed temperature and a fixed excess air coefficient; perform a regeneration combustion rate test based on the plurality of segmented carbon loading intervals, and record the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time corresponding to each of the segmented carbon loading intervals.

[0104] In one embodiment, the first table construction module is further configured to determine a segmented regeneration rate corresponding to each of the segmented carbon loading intervals according to the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time; fit a carbon amount and a regeneration rate curve based on the plurality of segmented carbon loading intervals and the segmented regeneration rate.

[0105] In one embodiment, the carbon amount regeneration monitoring device further includes a second table construction module;

[0106] The second table construction module is configured to perform a regeneration combustion rate test according to a preset remaining carbon amount under the conditions of different particle trap test inlet oxygen flow rates and different particle trap test temperatures, wherein regeneration stops when the carbon amount inside the particle trap reaches the preset remaining carbon amount; determine a target regeneration combustion rate coefficient corresponding to the particle trap test inlet oxygen flow rate and the particle trap test temperature based on the test results; construct a second preset table based on the particle trap test inlet oxygen flow rate, the particle trap test temperature, and the target regeneration combustion rate coefficient.

[0107] In one embodiment, the second table construction module is further configured to determine the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time according to the test results; determine a fixed regeneration rate corresponding to the particle trap test inlet oxygen flow rate and the particle trap test temperature according to the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time; determine a corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and a preset regeneration rate.

[0108] In one embodiment, the carbon amount regeneration monitoring device further includes a monitoring module;

[0109] The monitoring module is used to determine the remaining carbon load according to the current carbon amount and the carbon regeneration amount, so as to monitor the remaining carbon amount during the vehicle regeneration process.

[0110] In addition, it should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0111] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0112] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as Read Only Memory (ROM) / RAM, magnetic disk, optical disc), and includes several instructions to enable a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0113] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A method for monitoring carbon regeneration, characterized in that, the method for monitoring carbon regeneration includes: When the vehicle is in the regeneration process, real-time obtain the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time; Query a first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount; Query a second preset table according to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter to obtain the regeneration combustion rate coefficient corresponding to the oxygen flow rate at the inlet of the particulate filter and the temperature of the particulate filter; Determine the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time; Before the step of real-time obtaining the current carbon amount, the oxygen flow rate at the inlet of the particulate filter, the temperature of the particulate filter, and the regeneration time when the vehicle is in the regeneration process, the method further includes: Under the conditions of a fixed temperature and a fixed excess air coefficient, conduct a regeneration combustion rate test according to a preset maximum carbon load; Fit a carbon amount and regeneration rate curve according to the test results; Construct a first preset table based on the carbon amount and regeneration rate curve; Under the conditions of different test inlet oxygen flow rates of the particulate filter and different test temperatures of the particulate filter, conduct a regeneration combustion rate test according to a preset remaining carbon amount, wherein when the carbon amount inside the particulate filter reaches the preset remaining carbon amount, regeneration stops; Determine the target regeneration combustion rate coefficient corresponding to the test inlet oxygen flow rate of the particulate filter and the test temperature of the particulate filter according to the test results; Construct a second preset table based on the test inlet oxygen flow rate of the particulate filter, the test temperature of the particulate filter, and the target regeneration combustion rate coefficient.

2. The method for monitoring carbon regeneration according to claim 1, characterized in that, the step of conducting a regeneration combustion rate test according to a preset maximum carbon load under the conditions of a fixed temperature and a fixed excess air coefficient includes: Under the conditions of a fixed temperature and a fixed excess air coefficient, determine a plurality of segmented carbon load intervals according to a preset maximum carbon load; Conduct a regeneration combustion rate test based on the plurality of segmented carbon load intervals, and record the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time corresponding to each segmented carbon load interval.

3. The method for monitoring carbon regeneration according to claim 2, characterized in that, the step of fitting a carbon amount and regeneration rate curve according to the test results includes: Determine the segmented regeneration rate corresponding to each segmented carbon load interval according to the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segmented regeneration time; Fit a carbon amount and regeneration rate curve according to the plurality of segmented carbon load intervals and the segmented regeneration rate.

4. The method for monitoring carbon regeneration according to claim 3, characterized in that, the step of determining the target regeneration combustion rate coefficient corresponding to the test inlet oxygen flow rate of the particulate filter and the test temperature of the particulate filter according to the test results includes: Determine the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time according to the test results; Determine the fixed regeneration rate corresponding to the inlet oxygen flow rate of the particulate filter test and the particulate filter test temperature according to the carbon amount before regeneration, the carbon amount after regeneration, and the target regeneration time; Determine the corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and the preset regeneration rate.

5. The carbon amount regeneration monitoring method according to any one of claims 1-4, characterized in that, after determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time, the method further includes: Determine the remaining carbon load according to the current carbon amount and the carbon regeneration amount, so as to monitor the remaining carbon amount in the vehicle regeneration process.

6. A carbon amount regeneration monitoring device, characterized in that, the carbon amount regeneration monitoring device includes: An acquisition module, configured to, when the vehicle is in the regeneration process, acquire the current carbon amount, the inlet oxygen flow rate of the particulate filter, the particulate filter temperature, and the regeneration time in real time; Before acquiring the current carbon amount, the inlet oxygen flow rate of the particulate filter, the particulate filter temperature, and the regeneration time in real time when the vehicle is in the regeneration process, it further includes: Conduct a regeneration combustion rate test according to the preset maximum carbon load under the conditions of a fixed temperature and a fixed excess air coefficient; Fit a carbon amount and regeneration rate curve according to the test results; Construct a first preset table based on the carbon amount and regeneration rate curve; Under the conditions of different inlet oxygen flow rates of the particulate filter test and different particulate filter test temperatures, conduct a regeneration combustion rate test according to the preset remaining carbon amount, wherein regeneration stops when the carbon amount inside the particulate filter reaches the preset remaining carbon amount; Determine the target regeneration combustion rate coefficient corresponding to the inlet oxygen flow rate of the particulate filter test and the particulate filter test temperature according to the test results; Construct a second preset table based on the inlet oxygen flow rate of the particulate filter test, the particulate filter test temperature, and the target regeneration combustion rate coefficient; A query module, configured to query the first preset table according to the current carbon amount to determine the regeneration rate corresponding to the current carbon amount; The query module is further configured to query the second preset table according to the inlet oxygen flow rate of the particulate filter and the particulate filter temperature to obtain the regeneration combustion rate coefficient corresponding to the inlet oxygen flow rate of the particulate filter and the particulate filter temperature; A determination module, configured to determine the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time.

7. A carbon amount regeneration monitoring device, characterized in that, the device includes: a memory, a processor, and a carbon amount regeneration monitoring program stored on the memory and executable on the processor, and the carbon amount regeneration monitoring program is configured to implement the carbon amount regeneration monitoring method according to any one of claims 1 to 5.

8. A storage medium, characterized in that, a carbon amount regeneration monitoring program is stored on the storage medium, and when the carbon amount regeneration monitoring program is executed by a processor, it implements the carbon amount regeneration monitoring method according to any one of claims 1 to 5.

Images