CN113217156B - GPF regeneration control method and device for automobile and computer storage medium - Google Patents
GPF regeneration control method and device for automobile and computer storage medium Download PDFInfo
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- CN113217156B CN113217156B CN202110480604.0A CN202110480604A CN113217156B CN 113217156 B CN113217156 B CN 113217156B CN 202110480604 A CN202110480604 A CN 202110480604A CN 113217156 B CN113217156 B CN 113217156B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The embodiment of the application discloses a GPF regeneration control method and device of an automobile and a computer storage medium, and belongs to the technical field of vehicle engineering. The method comprises the following steps: when detecting that a particle trap GPF of an automobile carries out regeneration operation, acquiring state parameters and fire accumulation times of an automobile engine; determining a jitter parameter and a jitter threshold of the engine according to the state parameter, wherein the jitter parameter is used for describing the jitter state of the engine; controlling the GPF to interrupt a regeneration operation when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first number of times threshold. According to the method and the device, the regeneration operation of the GPF can be interrupted under a certain condition through the state parameters and the cumulative number of times of fire of the engine, so that the probability of fire risk of the engine is reduced, and the problem of fire of the engine caused in the active regeneration process of the GPF is solved.
Description
Technical Field
The embodiment of the application relates to the technical field of vehicle engineering, in particular to a method and a device for controlling regeneration of a GPF (Particulate matter Filter) of an automobile and a computer storage medium.
Background
With the social development, automobiles have gradually become vehicles essential for people to travel, and with the increase of the number of automobiles, the pollution of the exhaust emission of the automobiles to the environment is more and more serious, so in order to reduce the pollution to the environment and enable the exhaust emission of the automobiles to accord with the national laws and regulations, a GPF (Particulate Filter) can be added to a Gasoline engine emission treatment system of the automobiles, and the Particulate emission can be reduced through the GPF. After a certain time of running of an automobile carrying the GPF, a certain amount of carbon capacity is accumulated in the GPF, and when the carbon capacity is accumulated to a certain degree, the GPF triggers active regeneration operation to burn off carbon particles in the GPF at a high temperature.
Currently, GPF regeneration can be facilitated by increasing oxygen flow and GPF temperature in a manner that leans the air/fuel ratio and retards the ignition angle. However, during the GPF active regeneration, the lean air-fuel ratio and the retarded ignition angle may cause combustion deterioration in the engine cylinder, thereby causing a tendency of engine misfire, and when the lean air-fuel ratio and the retarded ignition angle are continuously decreased, the occurrence of the engine misfire may be increased.
Disclosure of Invention
The embodiment of the application provides a GPF regeneration control method and device for an automobile and a computer storage medium, which can be used for solving the problem that an engine fire is easily caused in the GPF regeneration process in the related technology. The technical scheme is as follows:
in one aspect, a GPF regeneration control method for an automobile is provided, the method including:
when detecting that a particulate matter trap GPF of an automobile carries out regeneration operation, acquiring state parameters and fire accumulated times of an automobile engine;
determining a jitter parameter and a jitter threshold of the engine according to the state parameter, wherein the jitter parameter is used for describing the jitter state of the engine;
controlling the GPF to interrupt a regeneration operation when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first number of times threshold.
In some embodiments, said determining a shudder parameter and a shudder threshold for said engine based on said state parameter comprises:
when the state parameters comprise the rotating speed and the load of the engine, determining an idle speed jitter variation value of the engine according to the rotating speed of the engine;
and acquiring a corresponding jitter threshold from a corresponding relation table among the rotating speed, the load and the threshold according to the rotating speed and the load.
In some embodiments, said determining a shudder parameter and a shudder threshold for said engine based on said state parameter comprises:
determining a torque jitter variation value of the engine according to the torque of the engine when the state parameter includes the torque of the engine;
and acquiring a corresponding jitter threshold from a corresponding relation table between the torque and the threshold according to the torque.
In some embodiments, after determining the jitter parameter and the jitter threshold of the engine based on the state parameter, the method further comprises:
and when the jitter parameter is not larger than the jitter threshold value or the accumulated number of times of misfire is not larger than the first time threshold value, controlling the GPF to perform a regeneration operation.
In some embodiments, the method further comprises:
and when receiving a flameout command of the automobile, carrying out zero setting processing on the accumulated times of the misfire.
In another aspect, there is provided a GPF regeneration control apparatus of an automobile, the apparatus including:
the acquisition module is used for acquiring the state parameters and the cumulative fire times of an automobile engine when the GPF of the automobile is detected to carry out regeneration operation;
the determining module is used for determining a jitter parameter and a jitter threshold of the engine according to the state parameter, wherein the jitter parameter is used for describing the jitter state of the engine;
a first control module to control the GPF to interrupt regeneration operation when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first number of times threshold.
In some embodiments, the determining module comprises:
a first determination submodule for determining an idle speed judder change value of the engine according to a rotation speed of the engine when the state parameter includes the rotation speed and the load of the engine;
and the first acquisition submodule is used for acquiring a corresponding jitter threshold from a corresponding relation table among the rotating speed, the load and the threshold according to the rotating speed and the load.
In some embodiments, the determining module comprises:
a second determination submodule for determining a torque jitter variation value of the engine according to a torque of the engine when the state parameter includes the torque of the engine;
and the second obtaining submodule is used for obtaining a corresponding jitter threshold from a corresponding relation table between the torque and the threshold according to the torque.
In some embodiments, the apparatus further comprises:
and the second control module is used for controlling the GPF to carry out regeneration operation when the jitter parameter is not larger than the jitter threshold value or the accumulated misfire number is not larger than the first time threshold value.
In some embodiments, the apparatus further comprises:
and the zero setting module is used for carrying out zero setting processing on the accumulated times of the fire when receiving a flameout instruction of the automobile.
In another aspect, a computer readable storage medium is provided, having instructions stored thereon, which when executed by a processor, implement any of the steps of the above-described automotive GPF regeneration control method.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
in the embodiment of the application, the state parameters and the cumulative number of times of fire of the engine can be acquired, and the regeneration operation of the GPF is interrupted when the state parameters and the cumulative number of times of fire meet certain conditions, so that the probability of fire risk of the engine is reduced, and the problem of fire of the engine caused in the active regeneration process of the GPF is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a GPF regeneration control system architecture of an automobile according to an embodiment of the present disclosure;
FIG. 2 is a flowchart of a GPF regeneration control method for a vehicle according to an embodiment of the present disclosure;
FIG. 3 is a flowchart of a GPF regeneration control method for a vehicle according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a GPF regeneration control device of an automobile according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a determination module provided in an embodiment of the present application;
FIG. 6 is a schematic structural diagram of another determining module provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of another GPF regeneration control device of an automobile according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a GPF regeneration control device of an automobile according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application more clear, the embodiments of the present application will be further described in detail with reference to the accompanying drawings.
Before explaining the GPF regeneration control method of an automobile provided in the embodiment of the present application in detail, an application scenario and a system architecture provided in the embodiment of the present application are explained first.
First, an application scenario provided in the embodiment of the present application is explained.
As emission regulations for automobiles become more stringent, the emission of engine exhaust from automobiles is more and more restricted, and therefore, to meet the emission regulations for automobiles, GPF can be added to automobiles to reduce the content of particulate matters in the exhaust from automobiles. After the automobile carrying the GPF runs for a certain time, the GPF continuously traps particulate matters, a certain amount of carbon loading can be accumulated in the GPF, when the carbon loading is accumulated to a certain degree, the exhaust back pressure of an engine can be increased, the GPF can trigger active regeneration operation at the moment, carbon particles in the GPF are burnt at a high temperature, and the filtering performance of the GPF is recovered.
Current regeneration strategies increase oxygen flow and GPF temperature by leaning out the air/fuel ratio and retarding the ignition angle to facilitate GPF regeneration. However, in the active regeneration, the combustion in the engine cylinder may be deteriorated by reducing the lean air-fuel ratio and the retarded ignition angle, which may cause the engine to have a tendency to misfire.
Next, a system architecture provided in the embodiments of the present application is explained in detail.
Fig. 1 is a schematic diagram of a GPF regeneration control system architecture of an automobile provided in an embodiment of the present application, and referring to fig. 1, the system architecture includes a regeneration control system 1 and a misfire detection module 2, where the regeneration control system 1 is connected to the misfire detection module 2. The misfire detection module 2 is used for detecting the misfire condition of the automobile engine in the regeneration process of the GPF of the automobile controlled by the regeneration control system 1 and sending the misfire condition of the engine to the regeneration control system 1; the regeneration control system 1 can control whether or not to continue to control the GPF for regeneration in accordance with the misfire condition of the automobile engine. The misfire condition can be expressed by the condition parameters of the automobile engine and the cumulative number of misfires.
In one embodiment, the system architecture can also include other modules, such as a PID (proportional-integral-derivative) controller, a rotational speed sensor, a torque sensor, a pressure sensor, a temperature sensor, and the like.
It should be understood by those skilled in the art that the above system architecture is merely exemplary, and other modules or components that may be present or later come into existence may be included within the scope of the present application and are herein incorporated by reference.
Fig. 2 is a flowchart of a GPF regeneration control method for an automobile according to an embodiment of the present disclosure, where the GPF regeneration control method for an automobile may include the following steps:
step 201: when detecting that the particle trap GPF of the automobile carries out regeneration operation, acquiring the state parameters and the cumulative misfire frequency of the automobile engine.
Step 202: and determining a jitter parameter and a jitter threshold of the engine according to the state parameter, wherein the jitter parameter is used for describing the jitter state of the engine.
Step 203: when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first time threshold, controlling the GPF to interrupt regeneration operation.
In the embodiment of the application, the state parameters and the cumulative number of times of fire of the engine can be acquired, and the regeneration operation of the GPF is interrupted when the state parameters and the cumulative number of times of fire meet certain conditions, so that the probability of fire risk of the engine is reduced, and the problem of fire of the engine caused in the active regeneration process of the GPF is solved.
In some embodiments, determining the shudder parameter and the shudder threshold for the engine based on the state parameter comprises:
when the state parameters comprise the rotating speed and the load of the engine, determining an idle speed jitter change value of the engine according to the rotating speed of the engine;
and acquiring a corresponding jitter threshold from a corresponding relation table among the rotating speed, the load and the threshold according to the rotating speed and the load.
In some embodiments, determining a shudder parameter and a shudder threshold for the engine based on the state parameter comprises:
determining a torque jitter variation value of the engine according to the torque of the engine when the state parameter includes the torque of the engine;
according to the torque, a corresponding jitter threshold is obtained from a correspondence table between the torque and the threshold.
In some embodiments, after determining the shudder parameter and the shudder threshold value for the engine based on the state parameter, further comprising:
and when the jitter parameter is not greater than the jitter threshold value or the accumulated number of times of misfire is not greater than the first time threshold value, controlling the GPF to perform a regeneration operation.
In some embodiments, the method further comprises:
when the flameout command of the automobile is received, the accumulated number of times of the misfire is set to zero.
All the above optional technical solutions can be combined arbitrarily to form an optional embodiment of the present application, and the present application embodiment is not described in detail again.
Fig. 3 is a flowchart of a GPF regeneration control method for an automobile according to an embodiment of the present disclosure, and the GPF regeneration control method for an automobile is applied to an automobile for example, and the GPF regeneration control method for an automobile may include the following steps:
step 301: the automobile detects whether the engine is on fire.
Since the engine may be in a fire state for some reasons during the ignition, starting and driving of the automobile, the automobile needs to detect whether the engine is in a fire state during the ignition, starting and driving of the automobile.
It should be noted that the engine misfire means that one or more cylinders of the engine do not work or do not work sufficiently.
As an example, when the engine catches fire, the engine triggers a fire fault code, and the automobile detects the fire fault code, the automobile can determine that the engine catches fire, and record the number of times the engine catches fire.
In some embodiments, a misfire counter can be installed in the automobile, and the automobile can record once through the misfire counter each time the automobile detects a misfire in the engine.
In some embodiments, the vehicle can zero the cumulative number of misfires when the vehicle receives a misfire command from the vehicle.
In some embodiments, the vehicle is capable of a malfunction alerting when the cumulative number of misfire detections by the vehicle is greater than a second threshold number of times.
It should be noted that the second time threshold can be set in advance according to the requirement, for example, the second time threshold can be 10 times, 8 times, and so on. The fault alarm prompt can be performed in at least one of voice, text, video, seat vibration, steering wheel vibration and the like.
Step 302: when the automobile detects that the GPF carries out regeneration operation, the state parameters and the accumulated misfire frequency of the automobile engine are acquired.
Since the regenerative operation of the GPF may aggravate the misfire tendency of the automobile engine when the GPF performs the regenerative operation, in order to protect the engine of the automobile, the state parameters of the automobile engine and the cumulative number of times of misfire are acquired when the automobile detects that the GPF performs the regenerative operation.
It should be noted that the state parameters of the vehicle include the rotation speed, load, torque, and the like of the engine of the vehicle.
Therefore, the automobile can acquire the fire accumulated times of the automobile engine after the engine is started at this time from the fire counter, acquire the rotating speed of the engine through the rotating speed sensor and acquire the torque of the engine through the torque sensor.
As one example, a vehicle may be able to obtain state parameters such as engine speed, torque, etc. over a specified period of time. The specified time length can be the time length after GPF active regeneration operation is detected; the time length before the GPF is detected to actively generate the regeneration operation is also capable of being a specified time length termination time; it can also be any period of time during which the vehicle is traveling, and the any period of time includes a point in time when the GPF is detected to be actively undergoing a regeneration operation. The specified duration can be 30 seconds, 60 seconds, etc.
In some embodiments, the vehicle can detect a pressure difference value between the front end and the rear end of the GPF through the GPF differential pressure sensor, determine a carbon loading of the GPF according to the pressure difference value, and trigger a regeneration flag when the carbon loading is greater than a carbon loading threshold, so that the vehicle can determine that the GPF is actively performing a regeneration operation according to the regeneration flag.
It should be noted that the process of determining the carbon loading of GPF by the vehicle from the pressure difference can be referred to the related art. The carbon loading threshold can be set in advance as required.
Step 303: the vehicle determines a shake parameter and a shake threshold value of the engine according to the state parameter, wherein the shake parameter is used for describing a shake state of the engine.
Since the vehicle engine will shake when it is misfired, the terminal needs to determine the shake condition of the vehicle engine in order to determine whether to intervene in the GPF regeneration operation. Therefore, the vehicle needs to determine the shake parameter and the shake threshold of the engine according to the state parameter.
As is apparent from the above description, the state parameters of the vehicle may include the rotation speed, torque, and the like of the engine of the vehicle, and the hunting of the engine may be related to the rotation speed, torque, and the like of the engine, and therefore, the vehicle may determine the hunting parameter and the hunting threshold value of the engine according to the rotation speed, torque, and the like of the engine, and the vehicle may determine the hunting parameter and the hunting threshold value of the engine according to the state parameters differently according to the state parameters.
As one example, when the state parameters include the rotation speed and the load of the engine, the automobile can determine an idle shake variation value of the engine according to the rotation speed of the engine; and acquiring a corresponding jitter threshold from a corresponding relation table among the rotating speed, the load and the threshold according to the rotating speed and the load.
It should be noted that the vehicle can determine the engine idle speed variation value according to the variation value of the rotation speed of the engine in the specified time period. The correspondence table between the rotation speed, the load, and the threshold value can be set in advance.
As one example, when the state parameter includes a torque of the engine, the automobile can determine a torque shake variation value of the engine from the torque of the engine; and acquiring a corresponding jitter threshold from a corresponding relation table between the torque and the threshold according to the torque.
It should be noted that the vehicle is capable of determining the engine torque variation value based on the variation value of the torque of the engine in a specified period. The correspondence table between the torque and the threshold value can also be set in advance.
In some embodiments, the vehicle may also be capable of filtering the state parameters before determining the dithering parameters and the dithering thresholds for the engine based on the state parameters.
Step 304: when the shake parameter is greater than or equal to the shake threshold value and the accumulated number of misfires is greater than or equal to the first time threshold value, the vehicle control GPF interrupts the regeneration operation.
Since the engine is shaken when there is a misfire in the engine, and the shake parameter is used to describe the shake state of the engine, and when the shake parameter is greater than or equal to the shake threshold value, it indicates that the engine has a tendency to misfire, when the shake parameter is greater than or equal to the shake threshold value and the cumulative number of times of misfire is greater than or equal to the first time threshold value, if the GPF regeneration operation is continued at this time, there is a high possibility that the engine may misfire due to the GPF regeneration operation, and therefore, the vehicle needs to control the GPF to interrupt the regeneration operation.
As one example, the engine may be capable of generating a misfire flag when the dithering parameter is greater than or equal to a dithering threshold value and the cumulative number of misfires is greater than or equal to a first number of times threshold value, and the vehicle may be capable of controlling the GPF to interrupt the regeneration operation based on the misfire flag when the vehicle detects the misfire flag.
It should be noted that, the jitter threshold and the first time threshold can be set in advance according to requirements, and the jitter threshold is different according to different state parameters, for example, when the state parameter is a rotation speed, the jitter threshold can be 1000 revolutions, 2000 revolutions, and the like, and when the state parameter is a torque, the jitter threshold can be 270 n/m, 250 n/m, and the like. The first time threshold can be 6 times, 5 times, 3 times, etc.
In some embodiments, after the vehicle controls the GPF to interrupt the regeneration operation, because the ignition angle and the lean air-fuel ratio are not delayed any more, the actual temperature and the air-fuel ratio can be output, so that the probability of misfire risk is reduced, and the problem of engine misfire caused in the GPF active regeneration process is solved.
In some embodiments, the GPF may be able to continue with regeneration operations because the engine may not be jarred, or, although the engine may be jarred, the number of misfires on the engine may be within a controlled range while performing the GPF active regeneration operation does not cause a misfire problem for the engine. That is, when the dither parameter is not greater than the dither threshold value, or the accumulated number of misfires is not greater than the first-time threshold value, the GPF is controlled to perform the regeneration operation.
In some embodiments, the manner in which the vehicle controls the GPF for regenerative operation can include at least: acquiring the operating condition of an engine, the target temperature and the actual temperature of GPF; carrying out normalization processing on the carbon capacity of the GPF according to the running condition of the engine, and determining the temperature difference between the target temperature and the actual temperature of the GPF; and determining a PID control parameter through a PID controller according to the temperature difference, controlling an ignition angle through the PID control parameter, and determining an air-fuel ratio according to the carbon loading after GPF normalization.
It should be noted that, reference may also be made to related technologies for a manner of performing a regeneration operation on a GPF for vehicle control, which is not described in detail in the embodiments of the present application
In the embodiment of the application, the automobile can acquire the state parameters and the fire cumulative times of the engine in the GPF regeneration operation process, and interrupt the GPF regeneration operation when the state parameters and the fire cumulative times meet certain conditions, so that the normal air-fuel ratio, the ignition angle and the temperature are recovered, the probability of the fire risk of the engine is reduced, and the problem of the fire of the engine caused in the GPF active regeneration process is solved.
Fig. 4 is a schematic structural diagram of an automotive GPF regeneration control device according to an embodiment of the present disclosure, where the automotive GPF regeneration control device may be implemented by software, hardware, or a combination of the two. The GPF regeneration control apparatus of the vehicle may include: an acquisition module 401, a determination module 402 and a first control module 403.
An obtaining module 401, configured to obtain a state parameter and an accumulated misfire frequency of an engine of an automobile when a particulate matter trap GPF of the automobile is detected to perform a regeneration operation;
a determination module 402 for determining a shake parameter and a shake threshold of the engine based on the state parameter, the shake parameter being descriptive of a shake state of the engine;
a first control module 403 to control the GPF to interrupt regeneration operation when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first number of times threshold.
In some embodiments, referring to fig. 5, the determining module 402 comprises:
a first determining sub-module 4021 for determining an idle shake change value of the engine according to the rotation speed of the engine when the state parameters include the rotation speed and the load of the engine;
the first obtaining sub-module 4022 is configured to obtain a corresponding jitter threshold from a correspondence table among the rotation speed, the load, and the threshold according to the rotation speed and the load.
In some embodiments, referring to fig. 6, the determining module 402 comprises:
a second determining sub-module 4023 for determining a torque jitter variation value of the engine according to the torque of the engine when the state parameter includes the torque of the engine;
the second obtaining sub-module 4024 is configured to obtain a corresponding shaking threshold from a correspondence table between the torque and the threshold according to the torque.
In some embodiments, referring to fig. 7, the apparatus further comprises:
a second control module 404 to control the GPF to perform a regeneration operation when the dither parameter is not greater than the dither threshold or the cumulative number of misfires is not greater than the first time threshold.
In some embodiments, referring to fig. 8, the apparatus further comprises:
and the zero setting module 405 is used for setting the accumulated misfire frequency to zero when receiving a flameout command of the automobile.
In the embodiment of the application, the automobile can acquire the state parameters and the fire cumulative times of the engine in the GPF regeneration operation process, and interrupt the GPF regeneration operation when the state parameters and the fire cumulative times meet certain conditions, so that the normal air-fuel ratio, the ignition angle and the temperature are recovered, the probability of the fire risk of the engine is reduced, and the problem of the fire of the engine caused in the GPF active regeneration process is solved.
It should be noted that: in the GPF regeneration control device for an automobile provided in the above embodiment, when the GPF of the automobile is controlled to be regenerated, only the division of the above functional modules is illustrated, and in practical applications, the above functions may be distributed to different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. In addition, the GPF regeneration control apparatus for an automobile provided in the foregoing embodiment and the GPF regeneration control method embodiment for an automobile belong to the same concept, and specific implementation processes thereof are described in detail in the method embodiment, and are not described again here.
The embodiment of the application further provides a non-transitory computer readable storage medium, and when instructions in the storage medium are executed by a processor of a server, the server is enabled to execute the GPF regeneration control method of the automobile provided by the embodiment.
The embodiment of the present application further provides a computer program product containing instructions, which when run on a server, causes the server to execute the GPF regeneration control method of the automobile provided by the above embodiment.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A GPF regeneration control method of an automobile, characterized in that it comprises:
when detecting that a particle trap GPF of an automobile carries out regeneration operation, acquiring state parameters and the accumulated number of times of misfire of an engine of the automobile, wherein the regeneration operation is used for burning off carbon particles in the GPF and recovering the filtering performance of the GPF;
determining a jitter parameter and a jitter threshold of the engine according to the state parameter, wherein the jitter parameter is used for describing the jitter state of the engine;
controlling the GPF to interrupt the regeneration operation when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first time threshold;
wherein said determining a shudder parameter and a shudder threshold for said engine based on said state parameter comprises:
when the state parameters comprise the rotating speed and the load of the engine, determining an idle speed jitter variation value of the engine according to the rotating speed of the engine; acquiring a corresponding jitter threshold from a corresponding relation table among the rotating speed, the load and the threshold according to the rotating speed and the load;
determining a torque jitter variation value of the engine according to the torque of the engine when the state parameter includes the torque of the engine; and acquiring a corresponding jitter threshold from a corresponding relation table between the torque and the threshold according to the torque.
2. The method of claim 1, wherein after determining a shudder parameter and a shudder threshold for the engine based on the state parameter, further comprising:
and when the jitter parameter is not larger than the jitter threshold value or the accumulated number of times of misfire is not larger than the first time threshold value, controlling the GPF to perform a regeneration operation.
3. The method of claim 1, wherein the method further comprises:
and when a flameout command of the automobile is received, carrying out zero setting processing on the accumulated misfire frequency.
4. A GPF regeneration control apparatus of an automobile, characterized by comprising:
the device comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the state parameters and the accumulated times of fire of an engine of an automobile when detecting that a particulate matter trap (GPF) of the automobile carries out regeneration operation, and the regeneration operation is used for burning off carbon particles in the GPF and recovering the filtering performance of the GPF;
the determining module is used for determining a jitter parameter and a jitter threshold of the engine according to the state parameter, wherein the jitter parameter is used for describing the jitter state of the engine;
a first control module to control the GPF to interrupt the regeneration operation when the dither parameter is greater than or equal to the dither threshold and the cumulative number of misfires is greater than or equal to a first time threshold;
the determining module comprises:
a first determination submodule for determining an idle speed judder change value of the engine according to a rotation speed of the engine when the state parameter includes the rotation speed and the load of the engine;
the first obtaining submodule is used for obtaining a corresponding jitter threshold from a corresponding relation table among the rotating speed, the load and the threshold according to the rotating speed and the load;
a second determination submodule for determining a torque jitter variation value of the engine from the torque of the engine when the state parameter includes the torque of the engine;
and the second obtaining submodule is used for obtaining a corresponding jitter threshold from a corresponding relation table between the torque and the threshold according to the torque.
5. The apparatus of claim 4, wherein the apparatus further comprises:
and the second control module is used for controlling the GPF to carry out regeneration operation when the jitter parameter is not larger than the jitter threshold value or the accumulated misfire number is not larger than the first time threshold value.
6. A computer-readable storage medium having stored thereon instructions which, when executed by a processor, carry out the steps of the method of any of the preceding claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110480604.0A CN113217156B (en) | 2021-04-30 | 2021-04-30 | GPF regeneration control method and device for automobile and computer storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110480604.0A CN113217156B (en) | 2021-04-30 | 2021-04-30 | GPF regeneration control method and device for automobile and computer storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113217156A CN113217156A (en) | 2021-08-06 |
| CN113217156B true CN113217156B (en) | 2022-11-29 |
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| CN116181460B (en) * | 2023-02-02 | 2024-04-19 | 重庆赛力斯新能源汽车设计院有限公司 | Method and device for controlling GPF running regeneration of range extender |
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