CN114882959A - Carbon quantity regeneration monitoring method, device, equipment and storage medium - Google Patents

Carbon quantity regeneration monitoring method, device, equipment and storage medium Download PDF

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CN114882959A
CN114882959A CN202210424681.9A CN202210424681A CN114882959A CN 114882959 A CN114882959 A CN 114882959A CN 202210424681 A CN202210424681 A CN 202210424681A CN 114882959 A CN114882959 A CN 114882959A
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regeneration
carbon
particle trap
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rate
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秦琨
兰江
潘锦双
黄国海
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Dongfeng Liuzhou Motor Co Ltd
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Dongfeng Liuzhou Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract

The invention belongs to the technical field of automobiles, and discloses a method, a device, equipment and a storage medium for monitoring carbon regeneration. The method comprises the following steps: when the vehicle is in a regeneration process, acquiring the current carbon amount, the inlet oxygen flow of the particle trap, the temperature of the particle trap and the regeneration time in real time; inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount; inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap; and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time. Through the mode, the regeneration process of the particle trap is monitored, the influence of the carbon amount of the current particle trap, the oxygen flow at the inlet of the particle trap and the temperature of the particle trap on the combustion rate is considered, and the monitoring precision of the carbon regeneration process is improved.

Description

Carbon quantity regeneration monitoring method, device, equipment and storage medium
Technical Field
The invention relates to the technical field of automobiles, in particular to a method, a device, equipment and a storage medium for monitoring carbon regeneration.
Background
The regeneration safety of a GPF (particulate trap) is one of the most important links for the stable work of an engine aftertreatment system, and is mainly influenced by factors such as regeneration temperature control, carbon loading during regeneration, regeneration working conditions and the like. In order to ensure the normal operation of the automobile system, the regeneration process of the GPF needs to be monitored. At present, after GPF regeneration, residual carbon amount is calibrated again through a pressure difference model, and the regeneration process cannot be monitored.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a carbon regeneration monitoring method, a carbon regeneration monitoring device, carbon regeneration monitoring equipment and a storage medium, and aims to solve the technical problem that the existing vehicle cannot monitor the regeneration process.
In order to achieve the above object, the present invention provides a carbon regeneration monitoring method, comprising the steps of:
when the vehicle is in a regeneration process, acquiring the current carbon amount, the oxygen flow at the inlet of the particle catcher, the temperature of the particle catcher and the regeneration time in real time;
inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount;
inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap;
and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time.
Optionally, before the current carbon amount, the particulate trap inlet oxygen flow, the particulate trap temperature and the regeneration time are obtained in real time while the vehicle is in the regeneration process, the method further comprises:
carrying out a regeneration combustion rate test according to a preset maximum carbon loading capacity under the conditions of fixed temperature and fixed excess air coefficient;
fitting a carbon amount and regeneration rate curve according to the test result;
a first predetermined table is constructed based on the carbon amount and the regeneration rate curve.
Optionally, the performing a regenerative burn rate test according to a preset maximum carbon load under a fixed temperature and a fixed excess air ratio includes:
under the conditions of fixed temperature and fixed excess air coefficient, determining a plurality of sectional carbon load intervals according to the preset maximum carbon load;
and carrying out a regeneration combustion rate test based on the plurality of sectional carbon capacity intervals, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time corresponding to each sectional carbon capacity interval.
Optionally, said fitting a carbon amount and regeneration rate curve according to the test results comprises:
determining the sectional regeneration rate corresponding to each sectional carbon loading interval according to the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time;
and fitting a carbon quantity and regeneration rate curve according to the plurality of sectional carbon loading intervals and the sectional regeneration rate.
Optionally, before the current carbon amount, the particulate trap inlet oxygen flow, the particulate trap temperature and the regeneration time are obtained in real time while the vehicle is in the regeneration process, the method further comprises:
under the conditions of different particle trap test inlet oxygen flow rates and different particle trap test temperatures, performing a regeneration combustion rate test according to a preset residual carbon amount, wherein the regeneration is stopped when the carbon amount in the particle trap reaches the preset residual carbon amount;
determining a target regeneration combustion rate coefficient corresponding to the test inlet oxygen flow of the particle trap and the test temperature of the particle trap according to the test result;
a second preset table is constructed based on the particulate trap test inlet oxygen flow, the particulate trap test temperature, and the target regeneration burn rate factor.
Optionally, the determining a target regeneration combustion rate coefficient corresponding to the particulate trap test inlet oxygen flow and the particulate trap test temperature according to the test result includes:
determining the carbon amount before regeneration, the carbon amount after regeneration and the target regeneration time according to the test result;
determining a fixed regeneration rate corresponding to the particle trap test inlet oxygen flow and the particle trap test temperature according to the pre-regeneration carbon amount, the post-regeneration carbon amount and the target regeneration time;
and determining a corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and a preset regeneration rate.
Optionally, after determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time, the method further comprises:
and determining the residual carbon capacity according to the current carbon amount and the carbon regeneration amount, and realizing monitoring on the residual carbon amount in the vehicle regeneration process.
In addition, in order to achieve the above object, the present invention also provides a carbon amount regeneration monitoring apparatus, including:
the system comprises an acquisition module, a regeneration module and a control module, wherein the acquisition module is used for acquiring the current carbon amount, the oxygen flow at the inlet of the particle trap, the temperature of the particle trap and the regeneration time in real time when a vehicle is in a regeneration process;
the query module is used for querying a first preset table according to the current carbon amount and determining the regeneration rate corresponding to the current carbon amount;
the query module is further used for querying a second preset table according to the particle trap inlet oxygen flow and the particle trap temperature to obtain a regeneration combustion rate coefficient corresponding to the particle trap inlet oxygen flow and the particle trap temperature;
and the determining module is used for determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time.
In addition, in order to achieve the above object, the present invention also provides a carbon amount regeneration monitoring apparatus, including: a memory, a processor, and a carbon regeneration monitoring program stored on the memory and executable on the processor, the carbon regeneration monitoring program configured to implement the carbon regeneration monitoring method as described above.
Further, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon a carbon amount regeneration monitoring program which, when executed by a processor, implements the carbon amount regeneration monitoring method as described above.
When a vehicle is in a regeneration process, the current carbon amount, the oxygen flow at the inlet of the particle trap, the temperature of the particle trap and the regeneration time are obtained in real time; inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount; inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap; and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time. By the mode, the regeneration process of the particle trap is monitored, the influence of the carbon amount of the current particle trap, the oxygen flow at the inlet of the particle trap and the temperature of the particle trap on the combustion rate is considered, the monitoring precision of the carbon regeneration process is improved, and the insufficient regeneration of GPF or the waste of fuel oil is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a carbon regeneration monitoring device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the carbon regeneration monitoring method according to the present invention;
FIG. 3 is a schematic flow chart of a carbon regeneration monitoring method according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart of a carbon regeneration monitoring method according to a third embodiment of the present invention;
fig. 5 is a block diagram showing the structure of the carbon regeneration monitoring apparatus according to the first embodiment of the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a carbon regeneration monitoring device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the carbon regeneration monitoring apparatus 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. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the carbon regeneration monitoring device, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a storage medium, may include therein an operating system, a network communication module, a user interface module, and a carbon regeneration monitoring program.
In the carbon regeneration monitoring apparatus shown in fig. 1, 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 of the carbon regeneration monitoring apparatus according to the present invention may be provided in the carbon regeneration monitoring apparatus, and the carbon regeneration monitoring apparatus calls the carbon regeneration monitoring program stored in the memory 1005 through the processor 1001 and executes the carbon regeneration monitoring method according to the embodiment of the present invention.
An embodiment of the present invention provides a method for monitoring carbon regeneration, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the method for monitoring carbon regeneration according to the present invention.
In this embodiment, the carbon regeneration monitoring method includes the following steps:
step S10: when the vehicle is in the regeneration process, the current carbon amount, the inlet oxygen flow of the particle trap, the temperature of the particle trap and the regeneration time are obtained in real time.
It is understood that the execution subject of the present embodiment is a carbon regeneration monitoring device, and the carbon regeneration monitoring device may be an on-board electronic control unit, and may also be other devices mounted on a vehicle.
It should be noted that, when the vehicle is in the regeneration process, the GPF warning lamp is displayed on the automobile meter, and if the continuous display indicates that the regeneration is not completed. Alternatively, before step S10, GPF regeneration is realized by controlling the ignition angle and the air-fuel ratio; the GPF is electrically heated through a GPF heating circuit to realize the regeneration of the GPF; when the vehicle slides and decelerates, GPF regeneration is realized by cutting off the oil supply of the engine.
It should be appreciated that regeneration of the GPF refers to the use of external energy to increase the temperature within the GPF to ignite the particulate for the purpose of removing particulate emissions from the GPF. The current carbon amount refers to the amount of carbon in the current particulate filter that needs to be subjected to GPF regeneration, and the regeneration time refers to the duration of the regeneration process from the beginning of regeneration of the vehicle to the time of data acquisition, and may also include the regeneration start time and the regeneration end time (i.e., the time of data acquisition). In a specific implementation, the current carbon amount, the particulate trap inlet oxygen flow, and the particulate trap temperature are obtained from sensors disposed in the particulate trap.
Step S20: and inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount.
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, and the regeneration rate corresponding to the regeneration condition can be obtained by querying the first preset table based on the current carbon amount.
Step S30: and inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap.
It should be understood that the second preset table is a relation table between the particulate trap inlet oxygen flow, the particulate trap temperature and the regeneration combustion rate coefficient determined in advance according to data calibration, and the regeneration combustion rate coefficient corresponding to the regeneration condition can be obtained by querying the second preset table according to the particulate trap inlet oxygen flow and the particulate trap temperature.
Step S40: and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time.
The carbon regeneration amount is calculated by the following model formula:
Figure BDA0003608295740000061
wherein M is the carbon regeneration amount; t is t 1 Is the regeneration start time; t is t 2 Is the regeneration end time; v 0 Is the rate of regeneration; and R is a regeneration combustion rate coefficient.
Further, after the step S40, the method further includes: and determining the residual carbon capacity according to the current carbon amount and the carbon regeneration amount, and realizing monitoring on the residual carbon amount in the vehicle regeneration process.
The current carbon amount refers to the carbon loading amount of the particulate trap before regeneration, the carbon loading amount before regeneration is reduced by the carbon regeneration amount to obtain the residual carbon loading amount, and when the residual carbon amount is 0, the GPF regeneration is represented to be completed, and a warning lamp of an automobile instrument is eliminated. In the embodiment, the carbon combustion condition in the regeneration process is accurately monitored, the regenerated carbon amount is calculated, and meanwhile, the residual carbon amount is obtained, so that the method has great significance for GPF regeneration control, GPF carrier protection and the like.
In the embodiment, when the vehicle is in a regeneration process, the current carbon amount, the oxygen flow at the inlet of the particle trap, the temperature of the particle trap and the regeneration time are obtained in real time; inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount; inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap; and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time. By the mode, the regeneration process of the particle trap is monitored, the influence of the carbon amount of the current particle trap, the oxygen flow at the inlet of the particle trap and the temperature of the particle trap on the combustion rate is considered, the monitoring precision of the carbon regeneration process is improved, and the insufficient regeneration of GPF or the waste of fuel oil is avoided.
Referring to fig. 3, fig. 3 is a schematic flow chart of a carbon regeneration monitoring method according to a second embodiment of the present invention.
Based on the first embodiment, before the step S10, the method for monitoring carbon regeneration of this embodiment further includes:
step S101: and under the conditions of fixed temperature and fixed excess air coefficient, carrying out a regeneration combustion rate test according to the preset maximum carbon loading.
It should be understood that the fixed temperature and fixed air excess factor of the present embodiment are the optimum temperature and optimum air excess factor determined experimentally in advance, and the particulate trap temperature is controlled by the gantry to reach the fixed temperature and the inlet air excess factor is the fixed air excess factor, under which conditions the regeneration burn rate test is performed according to the preset maximum carbon load. In a specific implementation, the fixed temperature is 800 ℃ and the fixed excess air factor is 1.1. Specifically, when the engine is fully combusted in the stoichiometric state, the air-fuel ratio is 14.6 for air mass/fuel mass, and the excess air ratio is 14.6 for actual air-fuel ratio/stoichiometric air-fuel ratio. In a specific implementation, carbon in GPF is combusted, and excess air and oxygen are required to enter an exhaust system after engine combustion, that is, the embodiment makes the excess air coefficient equal to 1.1 by increasing the air mass.
Specifically, the step S101 includes: under the conditions of fixed temperature and fixed excess air coefficient, determining a plurality of sectional carbon load intervals according to the preset maximum carbon load; and carrying out a regeneration combustion rate test based on the plurality of sectional carbon capacity intervals, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time corresponding to each sectional carbon capacity interval.
It should be noted that the preset maximum carbon loading is the maximum carbon loading determined according to the GPF specification, for example, 10g, and the plurality of segment carbon loading intervals are 10-8 g, 8-6 g, 6-4 g, 4-2 g, and 2-0 g, respectively. And controlling the GPF to be burnt from 10g to 8g and from 8g to 6g … … according to a plurality of sectional carbon loading intervals, and so on, realizing a sectional regenerative combustion rate test, thoroughly cleaning carbon before the regenerative combustion rate test to obtain the mass of the unloaded GPF, accumulating carbon to the maximum carbon loading, weighing the GPF before and after each sectional test, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time.
Step S102: carbon amount and regeneration rate curves were fitted according to the test results.
Specifically, the step S102 includes: determining the sectional regeneration rate corresponding to each sectional carbon loading interval according to the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time; and fitting a carbon quantity and regeneration rate curve according to the plurality of sectional carbon loading intervals and the sectional regeneration rate.
It should be appreciated that the corresponding segment regeneration rate is calculated from the test results for each segment carbon load interval, and a carbon amount and regeneration rate curve is fit based on the plurality of segment carbon load intervals and the corresponding segment regeneration rates. Specifically, the regeneration rate in stages is (actual carbon amount before regeneration-actual carbon amount after regeneration)/regeneration time.
Step S103: a first predetermined table is constructed based on the carbon amount and the regeneration rate curve.
It should be noted that points are taken on a carbon amount and regeneration rate curve based on a certain frequency, a plurality of point locations on the carbon amount and regeneration rate curve are determined, the carbon amount and the regeneration rate corresponding to each point location are determined, and a first preset table is constructed according to the carbon amount and the corresponding regeneration rate.
The embodiment establishes a particle trap regeneration combustion rate model in advance based on a test, constructs a corresponding first preset table, monitors the regeneration process of the particle trap based on the first preset table, considers the influence of the carbon amount of the current particle trap, the oxygen flow at the inlet of the particle trap and the temperature of the particle trap on the combustion rate, improves the monitoring precision of the carbon regeneration process, has great significance on GPF regeneration control, GPF carrier protection and the like, and avoids insufficient GPF regeneration or fuel waste.
Referring to fig. 4, fig. 4 is a schematic flow chart of a carbon regeneration monitoring method according to a third embodiment of the present invention.
Based on the first embodiment, before the step S10, the method for monitoring carbon regeneration of this embodiment further includes:
step S104: and under the conditions of different particle trap test inlet oxygen flow rates and different particle trap test temperatures, carrying out a regeneration combustion rate test according to a preset residual carbon amount, wherein the regeneration is stopped when the carbon amount in the particle trap reaches the preset residual carbon amount.
It can be understood that different particulate trap test inlet oxygen flow rates and different particulate trap test temperatures are set through bench testing, carbon is accumulated to a certain carbon amount to GPF in advance, then GPF is controlled to enter a regenerative combustion rate test until the internal carbon amount reaches a preset residual carbon amount, for example, carbon is accumulated to 6g to GPF, and the regenerative combustion rate test is carried out until the internal carbon amount reaches 4 g. And recording the carbon amount before regeneration, the carbon amount after regeneration and the target regeneration time corresponding to the oxygen flow at the test inlet of different particle traps and the test temperature of different particle traps.
Step S105: and determining a target regeneration combustion rate coefficient corresponding to the test inlet oxygen flow of the particle trap and the test temperature of the particle trap according to the test result.
Specifically, the step S105 includes: determining the carbon amount before regeneration, the carbon amount after regeneration and the target regeneration time according to the test result; determining a fixed regeneration rate corresponding to the particle trap test inlet oxygen flow and the particle trap test temperature according to the pre-regeneration carbon amount, the post-regeneration carbon amount and the target regeneration time; and determining a corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and a preset regeneration rate.
The following were calculated from the pre-regeneration carbon amount, the post-regeneration carbon amount, and the target regeneration time recorded in the regeneration burn rate test: fixed regeneration rate (carbon amount before regeneration-carbon amount after regeneration)/target regeneration time. The regeneration rate obtained by carrying out the regeneration combustion rate test is a preset regeneration rate under the conditions that the temperature of GPF is 800 ℃ and the excess air coefficient of a GPF inlet is 1.1, the regeneration combustion rate coefficient corresponding to the preset regeneration rate is set to be 1, and the regeneration combustion rate coefficient corresponding to the condition that the inlet oxygen flow is 0 is set to be 0. And dividing the fixed regeneration rate corresponding to the test inlet oxygen flow of different particle traps and the test temperature of different particle traps by the preset regeneration rate to obtain the test inlet oxygen flow of each particle trap and the target regeneration combustion rate coefficient corresponding to the test temperature of each particle trap.
Step S106: a second preset table is constructed based on the particulate trap test inlet oxygen flow, the particulate trap test temperature, and the target regeneration burn rate factor.
The embodiment builds a corresponding second preset table in advance based on a regeneration combustion rate test, monitors the regeneration process of the particle trap based on the second preset table, considers the influence of the carbon amount of the current particle trap, the oxygen flow at the inlet of the particle trap and the temperature of the particle trap on the combustion rate, improves the monitoring precision of the carbon regeneration process, has great significance on GPF regeneration control, GPF carrier protection and the like, and avoids insufficient GPF regeneration or waste of fuel.
In addition, an embodiment of the present invention further provides a storage medium, where a carbon regeneration monitoring program is stored on the storage medium, and the carbon regeneration monitoring program, when executed by a processor, implements the carbon regeneration monitoring method as described above.
Since the storage medium adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
Referring to fig. 5, fig. 5 is a block diagram illustrating a first embodiment of the apparatus for monitoring regeneration of carbon according to the present invention.
As shown in fig. 5, a carbon regeneration monitoring apparatus according to an embodiment of the present invention includes:
the acquisition module 10 is used for acquiring the current carbon amount, the oxygen flow at the inlet of the particulate trap, the temperature of the particulate trap and the regeneration time in real time when the vehicle is in the regeneration process.
And the query module 20 is configured to query a first preset table according to the current carbon amount, and determine a regeneration rate corresponding to the current carbon amount.
The query module 20 is further configured to query a second preset table according to the particle trap inlet oxygen flow and the particle trap temperature, so as to obtain a regeneration combustion rate coefficient corresponding to the particle trap inlet oxygen flow and the particle trap temperature.
A determination module 30 is configured to determine a corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient, and the regeneration time.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
In the embodiment, when the vehicle is in a regeneration process, the current carbon amount, the oxygen flow at the inlet of the particle trap, the temperature of the particle trap and the regeneration time are obtained in real time; inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount; inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap; and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time. By the mode, the regeneration process of the particle trap is monitored, the influence of the carbon amount of the current particle trap, the oxygen flow at the inlet of the particle trap and the temperature of the particle trap on the combustion rate is considered, the monitoring precision of the carbon regeneration process is improved, and the insufficient regeneration of GPF or the waste of fuel oil is avoided.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in this embodiment can be referred to the carbon regeneration monitoring method provided in any embodiment of the present invention, and are not described herein again.
In one embodiment, the carbon regeneration monitoring apparatus further includes a first table construction module;
the first table construction module is used for carrying out a regeneration combustion rate test according to a preset maximum carbon loading capacity under the conditions of fixed temperature and fixed excess air coefficient, fitting a carbon amount and regeneration rate curve according to a test result, and constructing a first preset table based on the carbon amount and regeneration rate curve.
In one embodiment, the carbon regeneration monitoring device further comprises a test module;
the test module is used for determining a plurality of sectional carbon loading intervals according to the preset maximum carbon loading under the conditions of fixed temperature and fixed excess air coefficient; and carrying out a regeneration combustion rate test based on the plurality of sectional carbon capacity intervals, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time corresponding to each sectional carbon capacity interval.
In an embodiment, the first table constructing module is further configured to determine a segment regeneration rate corresponding to each segment carbon loading interval according to the actual carbon amount before regeneration, the actual carbon amount after regeneration, and the segment regeneration time; and fitting a carbon amount and regeneration rate curve according to the plurality of segmented carbon load intervals and the segmented regeneration rate.
In one embodiment, the carbon regeneration monitoring apparatus further includes a second table construction module;
the second table construction module is used for carrying out a regeneration combustion rate test according to a preset residual carbon amount under the conditions of different particle trap test inlet oxygen flow rates and different particle trap test temperatures, wherein the regeneration is stopped when the carbon amount in the particle trap reaches the preset residual carbon amount; determining a target regeneration combustion rate coefficient corresponding to the test inlet oxygen flow of the particle trap and the test temperature of the particle trap according to the test result; a second preset table is constructed based on the particulate trap test inlet oxygen flow, the particulate trap test temperature, and the target regeneration burn rate factor.
In an embodiment, the second table building module is further configured to determine a carbon amount before regeneration, a carbon amount after regeneration, and a target regeneration time according to the test result; determining a fixed regeneration rate corresponding to the particle trap test inlet oxygen flow and the particle trap test temperature according to the pre-regeneration carbon amount, the post-regeneration carbon amount and the target regeneration time; and determining a corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and a preset regeneration rate.
In one embodiment, the carbon regeneration monitoring apparatus further comprises a monitoring module;
and the monitoring module is used for determining the residual carbon capacity according to the current carbon amount and the carbon regeneration amount, and monitoring the residual carbon amount in the vehicle regeneration process.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A carbon amount regeneration monitoring method, characterized by comprising:
when the vehicle is in a regeneration process, acquiring the current carbon amount, the oxygen flow at the inlet of the particle catcher, the temperature of the particle catcher and the regeneration time in real time;
inquiring a first preset table according to the current carbon amount, and determining the regeneration rate corresponding to the current carbon amount;
inquiring a second preset table according to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap to obtain a regeneration combustion rate coefficient corresponding to the oxygen flow at the inlet of the particle trap and the temperature of the particle trap;
and determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time.
2. The carbon regeneration monitoring method of claim 1, wherein the method further comprises, before obtaining the current carbon amount, the particulate trap inlet oxygen flow, the particulate trap temperature, and the regeneration time in real time while the vehicle is in the regeneration process:
carrying out a regeneration combustion rate test according to a preset maximum carbon loading capacity under the conditions of fixed temperature and fixed excess air coefficient;
fitting a carbon amount and regeneration rate curve according to the test result;
a first predetermined table is constructed based on the carbon amount and the regeneration rate curve.
3. The carbon regeneration monitoring method of claim 2, wherein the conducting a regeneration burn rate test based on a preset maximum carbon load at a fixed temperature and a fixed excess air factor comprises:
under the conditions of fixed temperature and fixed excess air coefficient, determining a plurality of sectional carbon load intervals according to the preset maximum carbon load;
and carrying out a regeneration combustion rate test based on the plurality of sectional carbon capacity intervals, and recording the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time corresponding to each sectional carbon capacity interval.
4. A method for monitoring carbon regeneration as recited in claim 3 wherein said fitting a carbon mass and regeneration rate curve based on said test results comprises:
determining the sectional regeneration rate corresponding to each sectional carbon loading interval according to the actual carbon amount before regeneration, the actual carbon amount after regeneration and the sectional regeneration time;
and fitting a carbon quantity and regeneration rate curve according to the plurality of sectional carbon loading intervals and the sectional regeneration rate.
5. The carbon regeneration monitoring method of claim 1, wherein the method further comprises, before obtaining the current carbon amount, the particulate trap inlet oxygen flow, the particulate trap temperature, and the regeneration time in real time while the vehicle is in the regeneration process:
under the conditions of different particle trap test inlet oxygen flow rates and different particle trap test temperatures, performing a regeneration combustion rate test according to a preset residual carbon amount, wherein the regeneration is stopped when the carbon amount in the particle trap reaches the preset residual carbon amount;
determining a target regeneration combustion rate coefficient corresponding to the test inlet oxygen flow of the particle trap and the test temperature of the particle trap according to the test result;
a second preset table is constructed based on the particulate trap test inlet oxygen flow, the particulate trap test temperature, and the target regeneration burn rate factor.
6. The method of claim 5, wherein determining a target regeneration burn rate factor for the particulate trap test inlet oxygen flow and the particulate trap test temperature based on the test results comprises:
determining the carbon amount before regeneration, the carbon amount after regeneration and the target regeneration time according to the test result;
determining a fixed regeneration rate corresponding to the particle trap test inlet oxygen flow and the particle trap test temperature according to the pre-regeneration carbon amount, the post-regeneration carbon amount and the target regeneration time;
and determining a corresponding target regeneration combustion rate coefficient according to the fixed regeneration rate and a preset regeneration rate.
7. The carbon amount regeneration monitoring method according to any one of claims 1 to 6, wherein after determining the corresponding carbon regeneration amount based on the regeneration rate, the regeneration burning rate coefficient, and the regeneration time, the method further comprises:
and determining the residual carbon capacity according to the current carbon amount and the carbon regeneration amount, and realizing monitoring on the residual carbon amount in the vehicle regeneration process.
8. A carbon amount regeneration monitoring apparatus, characterized by comprising:
the system comprises an acquisition module, a regeneration module and a control module, wherein the acquisition module is used for acquiring the current carbon amount, the oxygen flow at the inlet of the particle trap, the temperature of the particle trap and the regeneration time in real time when a vehicle is in a regeneration process;
the query module is used for querying a first preset table according to the current carbon amount and determining the regeneration rate corresponding to the current carbon amount;
the query module is further used for querying a second preset table according to the particle trap inlet oxygen flow and the particle trap temperature to obtain a regeneration combustion rate coefficient corresponding to the particle trap inlet oxygen flow and the particle trap temperature;
and the determining module is used for determining the corresponding carbon regeneration amount according to the regeneration rate, the regeneration combustion rate coefficient and the regeneration time.
9. A carbon regeneration monitoring apparatus, the apparatus comprising: a memory, a processor, and a carbon regeneration monitoring program stored on the memory and executable on the processor, the carbon regeneration monitoring program being configured to implement the carbon regeneration monitoring method according to any one of claims 1 to 7.
10. A storage medium having stored thereon a carbon amount regeneration monitoring program that, when executed by a processor, implements the carbon amount regeneration monitoring method according to any one of claims 1 to 7.
CN202210424681.9A 2022-04-21 2022-04-21 Carbon quantity regeneration monitoring method, device, equipment and storage medium Pending CN114882959A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116146366A (en) * 2023-04-17 2023-05-23 潍柴动力股份有限公司 Control method and device for regeneration rate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116146366A (en) * 2023-04-17 2023-05-23 潍柴动力股份有限公司 Control method and device for regeneration rate

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