CN113847122B - 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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- CN113847122B CN113847122B CN202111108817.7A CN202111108817A CN113847122B CN 113847122 B CN113847122 B CN 113847122B CN 202111108817 A CN202111108817 A CN 202111108817A CN 113847122 B CN113847122 B CN 113847122B
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- heating circuit
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
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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
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: in the running process of an engine of an automobile, when GPF of the automobile meets a regeneration control condition, obtaining running information of the automobile; determining whether the GPF meets an electric heating regeneration condition according to the operation information; when the GPF meets the electric heating regeneration condition, controlling a heating circuit in the GPF to electrically heat the GPF so as to realize the regeneration of the GPF. According to the embodiment of the application, when the GPF meets the regeneration control condition and the electrical heating regeneration condition in sequence, the GPF is electrically heated through the GPF heating circuit to realize the regeneration of the GPF, so that the regeneration of the GPF is not required to be realized by controlling the ignition angle, the regeneration control efficiency is improved, and the power economy and the user viscosity are improved.
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 necessary for people to go out, 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 that the GPF can be added in a gasoline engine emission treatment system of the automobiles in order to reduce the pollution to the environment and enable the exhaust emission of the automobiles to accord with national laws and regulations, and the particulate matter emission can be reduced through the GPF. After an automobile carrying the GPF runs for a certain time, 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 carbon particles in the GPF at a high temperature.
Currently, regeneration control of GPF includes active regeneration control and passive regeneration control. The active regeneration control is used for regenerating carbon particles in the GPF by means of exhaust waste gas heat after the engine runs, and the main operation comprises the steps that an engine control unit ECU changes the running rotating speed of the engine, the air excess coefficient of mixed gas, the ignition angle and the like, so that the internal temperature of the GPF is increased to reach the temperature boundary of carbon particle combustion, and regeneration is achieved. Passive regeneration control relies entirely on manual triggering.
However, the active regeneration control deteriorates the subjective feeling of drivability and deteriorates the power economy due to the decrease in ignition efficiency. Passive regeneration control can prevent the vehicle from being used normally for a certain period of time, thereby reducing the viscosity of the user.
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 problems of low regeneration control efficiency, poor dynamic economy and low user viscosity in the related art. The technical scheme is as follows:
in one aspect, a GPF regeneration control method for an automobile is provided, the method including:
in the running process of an engine of an automobile, when a particulate matter trap GPF of the automobile meets a regeneration control condition, obtaining running information of the automobile;
determining whether the GPF meets an electric heating regeneration condition according to the operation information;
when the GPF meets the electric heating regeneration condition, controlling a heating circuit in the GPF to electrically heat the GPF so as to realize the regeneration of the GPF.
In some embodiments, the obtaining the operation information of the vehicle when the particulate matter trap GPF of the vehicle satisfies the regeneration control condition during the operation of the engine of the vehicle includes:
during the running process of the engine of the automobile, when the GPF meets the regeneration control condition, carrying out fault detection on a heating circuit in the GPF;
diagnosing a function of a component in the GPF other than the heating circuit when there is no fault in the heating circuit;
and when the functions of the parts except the heating circuit in the GPF are normal, acquiring the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile.
In some embodiments, the detecting a fault in a heating circuit in the GPF when the GPF satisfies the regeneration control condition during operation of the engine of the vehicle includes:
acquiring an operation signal of a heating element in the heating circuit and a voltage signal of a heating line when the GPF satisfies the regeneration control condition during the operation of the engine;
determining that the heating circuit is malfunctioning when the operating signal and the voltage signal meet a fault condition;
determining that the heating circuit is not malfunctioning when the operating signal and/or the voltage signal do not comply with the fault condition.
In some embodiments, the operational information includes a pressure differential across the front and rear ends of the GPF, a temperature of the GPF, and a supply voltage of the vehicle;
the determining whether the GPF meets an electric heating regeneration condition according to the operation information includes:
determining whether the pressure difference is greater than or equal to a first pressure threshold, whether the temperature of the GPF is less than a temperature threshold, and whether the power supply voltage is within a voltage range;
determining that the GPF satisfies the electrically heated regeneration condition when the pressure difference is greater than or equal to the first pressure threshold, the temperature of the GPF is less than the temperature threshold, and the supply voltage is within a voltage range.
In some embodiments, after controlling the heating circuit in the GPF to electrically heat the GPF when the GPF satisfies the motor heat regeneration condition, the method further includes:
detecting a heating time of the heating circuit, and/or detecting a temperature of the GPF;
and when the heating time of the heating circuit is greater than or equal to a time threshold value, and/or the temperature of the GPF is greater than or equal to a temperature threshold value, controlling the heating circuit to stop heating.
In some embodiments, after controlling the heating circuit in the GPF to electrically heat the GPF when the GPF satisfies the electrical heating regeneration condition, the method further includes:
when the heating time of the heating circuit is smaller than a time threshold and the temperature of the GPF is smaller than a temperature threshold, acquiring a pressure difference value of the front end and the rear end of the GPF;
and when the pressure difference value is smaller than a second pressure threshold value, controlling the heating circuit to stop heating.
In another aspect, there is provided a GPF regeneration control apparatus of an automobile, the apparatus including:
the device comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring the running information of the automobile when a particulate matter trap GPF of the automobile meets a regeneration control condition in the running process of an engine of the automobile;
the determining module is used for determining whether the GPF meets an electric heating regeneration condition or not according to the operation information;
and the first control module is used for controlling a heating circuit in the GPF to electrically heat the GPF when the GPF meets the electric heating regeneration condition so as to realize the regeneration of the GPF.
In some embodiments, the first obtaining module comprises:
the detection submodule is used for carrying out fault detection on a heating circuit in the GPF when the GPF meets the regeneration control condition in the running process of the engine of the automobile;
a diagnostic submodule for diagnosing a function of a component of the GPF other than the heating circuit when there is no fault in the heating circuit;
and the acquisition submodule is used for acquiring the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile when the functions of parts except the heating circuit in the GPF are normal.
In some embodiments, the detection submodule is to:
acquiring an operation signal of a heating element in the heating circuit and a voltage signal of a heating line when the GPF satisfies the regeneration control condition during the operation of the engine;
determining that the heating circuit is malfunctioning when the operating signal and the voltage signal meet a fault condition;
determining that the heating circuit is not malfunctioning when the operating signal and/or the voltage signal do not comply with the fault condition.
In some embodiments, the operational information includes a pressure differential across the front and rear ends of the GPF, a temperature of the GPF, and a supply voltage of the vehicle;
the determining module comprises:
a first determination submodule to determine whether the pressure difference is greater than or equal to a first pressure threshold, whether the temperature of the GPF is less than a temperature threshold, and whether the supply voltage is within a voltage range;
a second determination submodule to determine that the GPF satisfies the electrical heating regeneration condition when the pressure difference is greater than or equal to the first pressure threshold, the temperature of the GPF is less than the temperature threshold, and the supply voltage is within a voltage range.
In some embodiments, the apparatus further comprises:
the detection module is used for detecting the heating time of the heating circuit and/or detecting the temperature of the GPF;
and the second control module is used for controlling the heating circuit to stop heating when the heating time of the heating circuit is greater than or equal to a time threshold and/or the temperature of the GPF is greater than or equal to a temperature threshold.
In some embodiments, the apparatus further comprises:
the second acquisition module is used for acquiring a pressure difference value between the front end and the rear end of the GPF when the heating time of the heating circuit is less than a time threshold and the temperature of the GPF is less than a temperature threshold;
and the third control module is used for controlling the heating circuit to stop heating when the pressure difference value is smaller than the second pressure threshold value.
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, when the GPF meets the regeneration control condition and the electrical heating regeneration condition in sequence, the GPF is electrically heated through the GPF heating circuit to realize the regeneration of the GPF, so that the regeneration of the GPF is realized without controlling an ignition angle and the GPF is passively controlled, the regeneration control efficiency of the GPF is improved, and the power economy and the user viscosity are improved.
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 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 flow chart of another exemplary method for controlling GPF regeneration in 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 first obtaining module according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a determination 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 another 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 the vehicle provided by the embodiment of the present application in detail, an application scenario and a system architecture provided by the embodiment of the present application are explained in detail.
First, an application scenario provided in the embodiment of the present application is explained.
With the increasing tightening of emission regulations and the gradual implementation of RED (european wireless product certification) test requirements, the requirements for PN (suspended particulate mass/number of particles) emissions are increasing, and therefore, in order for an individual automobile to meet the requirements of emission regulations, GPF is generally added to an engine aftertreatment system to improve PN emissions.
Currently, regeneration control of GPF includes active regeneration control and passive regeneration control. The active regeneration Control is to perform regeneration treatment on carbon particles in the GPF by means of exhaust gas heat after the engine runs, and the main operations include that an Engine Control Unit (ECU) changes the running rotating speed of the engine, the air excess coefficient of a mixed gas, an ignition angle and the like, so that the internal temperature of the GPF is increased to reach a temperature boundary of carbon particle combustion, and regeneration is realized. Passive regeneration control relies entirely on manual triggering. However, the active regeneration control deteriorates the subjective feeling of drivability and deteriorates the power economy due to the decrease in ignition efficiency. Passive regeneration control can prevent the vehicle from being used normally for a certain period of time, thereby reducing the viscosity of the user.
Based on such application scenarios, the embodiment of the application provides a GPF regeneration control method for an automobile, which can improve control efficiency, power economy and user viscosity.
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 according to an embodiment of the present application, and referring to fig. 1, the system architecture includes a GPF1, an ECU2, a temperature sensor 3, and a pressure sensor 4, where the GPF1 can be controlled by the ECU2, the temperature sensor 3 and the pressure sensor 4 are both connected to the GPF1 and the ECU2, respectively, and the temperature sensor 3 and the pressure sensor 4 can detect a temperature of the GPF1 and a pressure difference between the front end and the rear end during operation of the engine of the automobile, and send the detected temperature and pressure difference of the GPF1 to the ECU 35 2. The ECU2 is capable of acquiring running information of the automobile including the temperature of the GPF1 and the pressure difference value of the front end and the rear end when the GPF of the automobile meets the regeneration control condition during the running process of the engine of the automobile, and determining whether the GPF2 meets the electric heating regeneration condition according to the running information; when GPF2 meets the electric heating regeneration condition, GPF2 is controlled to electrically heat GPF1 to realize regeneration of GPF 1.
As an example, GPF1 can include a heating circuit including a fuse 11, a battery 12, a circuit switch 13, and a heater wire 14. One end of the fuse is connected with one end of the storage battery 12, the other end of the fuse 11 is connected with a first end of a circuit switch 13, a second end of the circuit switch is connected with one end of a heating electric wire 14, and the other end of the heating electric wire 14 is connected with the other end of the storage battery 12; and the control end of the circuit switch is connected with the ECU.
In one embodiment, the system architecture can be connected in other forms, for example, the GPF1 can include the heating wire 14, the fuse 11, the battery 12, and the circuit switch 13 are not components of the GPF1, and the heating wire 14 of the GPF1 can form part of the heating circuit with the fuse 11, the battery 12, the circuit switch 13, and the ECU1, respectively.
It should be understood by those skilled in the art that the foregoing system architecture is merely exemplary, and other modules or components that may be present or later become known and may be used in the present application are also included within the scope of the present application and are hereby 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: during the running process of an engine of an automobile, when a particulate matter trap GPF of the automobile meets a regeneration control condition, the running information of the automobile is obtained.
Step 202: based on the operational information, it is determined whether the GPF satisfies an electrical heating regeneration condition.
Step 203: when the GPF meets the electric heating regeneration condition, a heating circuit in the GPF is controlled to electrically heat the GPF so as to realize the regeneration of the GPF.
In the embodiment of the application, when the GPF meets the regeneration control condition and the electrical heating regeneration condition in sequence, the GPF is electrically heated through the GPF heating circuit to realize the regeneration of the GPF, so that the regeneration of the GPF is realized without controlling an ignition angle and the GPF is passively controlled, the regeneration control efficiency of the GPF is improved, and the power economy and the user viscosity are improved.
In some embodiments, during operation of an engine of a vehicle, when a particulate matter trap GPF of the vehicle satisfies a regeneration control condition, obtaining operation information of the vehicle includes:
during the running process of the engine of the automobile, when the GPF meets the regeneration control condition, carrying out fault detection on a heating circuit in the GPF;
diagnosing a function of a component in the GPF other than the heating circuit when there is no fault in the heating circuit;
when the functions of the parts except the heating circuit in the GPF are normal, acquiring the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile.
In some embodiments, during operation of the engine of the vehicle, when the GPF satisfies the regeneration control condition, performing fault detection on a heating circuit in the GPF includes:
acquiring an operation signal of a heating element in the heating circuit and a voltage signal of a heating line when the GPF satisfies the regeneration control condition during operation of the engine;
determining that the heating circuit is faulty when the operating signal and the voltage signal meet a fault condition;
when the operating signal and/or the voltage signal do not comply with the fault condition, it is determined that the heating circuit is not malfunctioning.
In some embodiments, the operational information includes a pressure differential across the front and rear ends of the GPF, a temperature of the GPF, and a supply voltage of the vehicle;
determining whether the GPF satisfies an electrical heating regeneration condition based on the operational information, including:
determining whether the pressure difference is greater than or equal to a first pressure threshold, whether the temperature of the GPF is less than a temperature threshold, and whether the power supply voltage is within a voltage range;
when the pressure difference is greater than or equal to the first pressure threshold, the temperature of the GPF is less than the temperature threshold, and the power supply voltage is within a voltage range, determining that the GPF satisfies the electrically heated regeneration condition.
In some embodiments, when the GPF satisfies the motor thermal regeneration condition, after controlling the heating circuit in the GPF to electrically heat the GPF, the method further includes:
detecting a heating time of the heating circuit, and/or detecting a temperature of the GPF;
and when the heating time of the heating circuit is greater than or equal to a time threshold value, and/or the temperature of the GPF is greater than or equal to a temperature threshold value, controlling the heating circuit to stop heating.
In some embodiments, when the GPF satisfies the electrical heating regeneration condition, after controlling the heating circuit in the GPF to electrically heat the GPF, the method further includes:
when the heating time of the heating circuit is less than a time threshold and the temperature of the GPF is less than a temperature threshold, acquiring a pressure difference value of the front end and the rear end of the GPF;
and when the pressure difference value is smaller than a second pressure threshold value, controlling the heating circuit to stop heating.
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: during the running process of an engine of the automobile, whether the GPF of the automobile meets a regeneration control condition is detected.
Because the GPF of an automobile is subjected to regeneration control under certain conditions, the automobile needs to detect whether the GPF of the automobile meets the regeneration control conditions during the operation of the engine.
As an example, since GPF continuously traps particulate matter after a certain time of traveling of an automobile carrying GPF, a certain amount of carbon load is accumulated in GPF, and when the carbon load is accumulated to a certain degree, the GPF starts an active regeneration operation. Therefore, the automobile can detect the carbon load in the GPF of the automobile in real time or at first specified time intervals during the running process of the engine, and when the carbon load of the GPF is larger than the carbon load threshold, the GPF is determined to meet the regeneration control condition. When the carbon loading of the GPF is less than the carbon loading threshold, determining that the GPF does not satisfy the regeneration control condition.
It should be noted that the carbon loading threshold can be set in advance, for example, the carbon loading threshold can be 9 grams, 6 grams, and so on. The second designated time interval can also be set in advance according to requirements, for example, the second designated time interval can be 30 minutes, 1 hour, and the like.
Step 302: when the GPF of the automobile meets the regeneration control condition, the running information of the automobile is acquired.
Since the electrical heating regeneration control of the GPF is related to the running condition of the automobile, the automobile needs to acquire running information.
As an example, when the GPF satisfies the regeneration control condition during the operation of the engine of the vehicle, the operation of acquiring the operation information of the vehicle includes at least: in the running process of an engine of an automobile, when the GPF meets a regeneration control condition, fault detection is carried out on a heating circuit in the GPF; when there is no fault in the heating circuit, diagnosing the functions of the parts in the GPF other than the heating circuit; when the functions of parts except the heating circuit in the GPF are normal, the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile are obtained.
Since the temperature sensor and the pressure sensor can be mounted on the vehicle, the temperature of the GPF and the pressure difference between the front end and the rear end of the GPF can be detected by the temperature sensor and the pressure sensor, respectively. Since the ECU of the vehicle can monitor the condition of the vehicle power supply in a normal condition, the vehicle can acquire the power supply voltage of the vehicle through the ECU. That is, the operation information includes at least one of a pressure difference value of front and rear ends of the GPF, a temperature of the GPF, and a power supply voltage of the vehicle.
When the heating circuit of the GPF has a fault, the automobile cannot realize the regeneration control of the GPF through the heating circuit, for example, a large current flows through the heating circuit of the heating circuit to generate a potential safety hazard, and the regeneration control of the GPF in the component level of the GPF also has an influence. Therefore, during the operation of the engine of the automobile, it is necessary to detect a failure in the heating circuit in the GPF and diagnose the functions of the components other than the heating circuit in the GPF when there is no failure in the heating circuit.
As an example, when the GPF satisfies the regeneration control condition during the operation of the engine of the vehicle, the operation of detecting the failure of the heating circuit in the GPF at least includes: in the running process of the engine, when the GPF meets a regeneration control condition, obtaining a running signal of a heating element in a heating circuit and a voltage signal of a heating circuit; when the operation signal and the voltage signal accord with the fault condition, determining that the heating circuit has a fault; when the operating signal and/or the voltage signal do not comply with the fault condition, it is determined that the heating circuit is not malfunctioning.
Since an open or short circuit of the heating line in the heating circuit may exhibit different voltage signals at the ECU, the vehicle can determine whether the heating circuit is malfunctioning by detecting the operation signal of the heating element and the voltage signal of the heating line.
In some embodiments, when the heating circuit fails, the vehicle can display a first prompt message through the gauge, the first prompt message being used to prompt the heating circuit of the GPF to fail.
In some embodiments, the vehicle can be used normally before the fault of the heating circuit of the GPF is not repaired and is frequently prompted to the user for repair as soon as possible, for example, every second designated time interval is prompted by the first prompt message to prompt the user for repair as soon as possible. Or when the automobile is powered on every time, prompting is carried out through the first prompting information.
The first prompt message can be at least one of text, voice, video, and the like. The second designated time interval can also be set in advance according to requirements, for example, the second designated time interval can be 12 hours, 24 hours, and the like.
In some embodiments, the components of the GPF other than the heating circuit can include a pressure sensor, a temperature sensor, a power supply, and the like, so that the vehicle can detect the functions of the pressure sensor, the temperature sensor, the power supply, and the like, and when the functions of the pressure sensor, the temperature sensor, the power supply, and the like are operating normally, the pressure difference value of the front and rear ends of the GPF, the temperature of the GPF, and the power supply voltage of the vehicle are acquired.
It should be noted that, the functions of the pressure sensor, the temperature sensor, the power supply, and the like are detected, and in addition to the open-circuit diagnosis, the short-circuit diagnosis, and the rationality diagnosis of the signals of the component stages, the function diagnosis of the GPF heating circuit needs to be completed to ensure that the functions of the components are normal and the signals are rational.
In some embodiments, when the function of the component other than the heating circuit in the GPF is not operating normally, that is, when there is a failure in the function of the component other than the heating circuit in the GPF, the failed component is prompted by the second prompt message.
Step 303: and the automobile determines whether the GPF of the automobile meets the electric heating regeneration condition or not according to the operation information.
Because the operation information of the automobile has a certain influence on the electric heating regeneration control of the automobile, the automobile also needs to determine whether the GPF of the automobile meets the electric heating regeneration condition according to the operation information.
As can be seen from the above, the operation information of the vehicle includes the pressure difference value of the front and rear ends of the GPF, the temperature of the GPF, and the power supply voltage of the vehicle, and therefore, the operation of the vehicle to determine whether the GPF satisfies the electrical heating regeneration condition based on the operation information at least includes: determining whether the pressure difference is greater than or equal to a first pressure threshold, the temperature of the GPF is less than a temperature threshold, and the power supply voltage is within a voltage range; and when the pressure difference value is greater than or equal to the first pressure threshold value, the temperature of the GPF is less than the temperature threshold value, and the power supply voltage is in the voltage range, determining that the GPF meets the electric heating regeneration condition.
Because when heating circuit is normal, the car can detect whether mains voltage is higher than first predetermined voltage, when mains voltage is higher than predetermined voltage, can carry out subsequent GPF electrical heating regeneration function to avoid leading to extra power consumption because for GPF electrical heating, and then make mains voltage further reduce, make the follow-up unable normal work of engine. And when the power supply voltage is lower than a second predetermined voltage, the GPF cannot be controlled to perform the regeneration function. Therefore, the automobile needs to determine whether the power supply voltage is within the voltage range.
It should be noted that the first predetermined voltage and the second predetermined voltage can be set in advance according to requirements, and the first predetermined voltage can be greater than or equal to the second predetermined voltage.
Since it is also necessary to determine whether the pressure differential across the GPF reaches the regeneration threshold after the carbon loading meets the regeneration control conditions, the vehicle needs to determine whether the pressure differential is greater than or equal to the first pressure threshold.
Since excessive post-regeneration temperatures of the GPF may cause safety concerns for the GPF when the temperature of the GPF is greater than the temperature threshold, it is also necessary to determine whether the temperature of the GPF is less than the temperature threshold.
The first pressure threshold and the temperature threshold may be set in advance as needed.
Step 304: when the GPF meets the electric heating regeneration condition, a heating circuit in the automobile control GPF electrically heats the GPF to realize the regeneration of the GPF.
As can be seen from the above, the heating circuit can include the circuit switch, and the control terminal of the circuit switch is connected with the ECU, so that when the GPF satisfies the electrical heating regeneration condition, the vehicle can control the circuit switch in the heating circuit to be closed through the ECU, thereby realizing that the heating circuit electrically heats the GPF, and further realizing the regeneration of the GPF.
In some embodiments, when the GPF satisfies the electrically heated regeneration condition, after controlling the heating circuit in the GPF to electrically heat the GPF, it can also be determined whether to end the regeneration control of the GPF. That is, the vehicle can control the GPF to stop the electrical heating regeneration.
As an example, the operation of the vehicle control GPF to stop the motor heat regeneration at least comprises: detecting the heating time of the heating circuit and/or detecting the temperature of the GPF; and when the heating time of the heating circuit is greater than or equal to the time threshold and/or the temperature of the GPF is greater than or equal to the temperature threshold, controlling the heating circuit to stop heating.
It should be noted that the heating time period can be set in advance according to the requirement, for example, the heating time period can be 5 minutes, 10 minutes, and the like.
Because when the heating time is too long, the temperature of the GPF may be too high, and thus potential safety hazards are brought to the GPF, the automobile can control the heating circuit to stop heating when the heating time of the heating circuit is greater than or equal to the time threshold and/or the temperature of the GPF is greater than or equal to the temperature threshold.
As an example, when the heating time of the heating circuit is less than the time threshold and the temperature of the GPF is less than the temperature threshold, the pressure difference between the front end and the rear end of the GPF is obtained; and when the pressure difference value is smaller than the second pressure threshold value, controlling the heating circuit to stop heating.
It should be noted that the second pressure threshold can also be set in advance according to requirements, and the second pressure threshold is smaller than or equal to the first pressure threshold.
In the embodiment of the application, when the GPF meets the regeneration control condition and the electrical heating regeneration condition in sequence, the automobile can electrically heat the GPF through the GPF heating circuit to realize the regeneration of the GPF, so that the regeneration of the GPF is not required to be realized by controlling the ignition angle, the GPF is not required to be passively controlled, the regeneration control efficiency of the GPF is improved, and the power economy and the user viscosity are improved.
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: a first acquisition module 401, a determination module 402 and a first control module 403.
The first obtaining module 401 is configured to obtain operation information of an automobile when a particulate matter trap GPF of the automobile meets a regeneration control condition during operation of an engine of the automobile;
a determining module 402, configured to determine whether the GPF satisfies an electrical heating regeneration condition according to the operation information;
a first control module 403, configured to control a heating circuit in the GPF to electrically heat the GPF to implement regeneration of the GPF when the GPF satisfies the electrical heating regeneration condition.
In some embodiments, referring to fig. 5, the first obtaining module 401 includes:
the detection submodule 4011 is configured to, during operation of the engine of the vehicle, detect a fault of a heating circuit in the GPF when the GPF meets the regeneration control condition;
a diagnosis submodule 4013 configured to diagnose functions of components of the GPF other than the heater circuit when there is no fault in the heater circuit;
the obtaining submodule 4013 is configured to obtain, when functions of components in the GPF except for the heating circuit operate normally, a pressure difference value between front and rear ends of the GPF, a temperature of the GPF, and a power supply voltage of the vehicle.
In some embodiments, the detection sub-module 4011 is configured to:
acquiring an operation signal of a heating element in the heating circuit and a voltage signal of a heating line when the GPF satisfies the regeneration control condition during the operation of the engine;
determining that the heating circuit is malfunctioning when the operating signal and the voltage signal meet a fault condition;
determining that the heating circuit is not malfunctioning when the operating signal and/or the voltage signal do not comply with the fault condition.
In some embodiments, the operational information includes a pressure differential across the front and rear ends of the GPF, a temperature of the GPF, and a supply voltage of the vehicle;
referring to fig. 6, the determining module 402 includes:
a first determination sub-module 4021 for determining whether the pressure difference is greater than or equal to a first pressure threshold, whether the temperature of the GPF is less than a temperature threshold, and whether the power supply voltage is within a voltage range;
a second determination sub-module 4022 configured to determine that the GPF satisfies the electrical heating regeneration condition when the pressure difference is greater than or equal to the first pressure threshold, the temperature of the GPF is less than the temperature threshold, and the power supply voltage is within a voltage range.
In some embodiments, referring to fig. 7, the apparatus further comprises:
a detection module 404, configured to detect a heating duration of the heating circuit, and/or detect a temperature of the GPF;
a second control module 405, configured to control the heating circuit to stop heating when a heating time period of the heating circuit is greater than or equal to a time period threshold, and/or a temperature of the GPF is greater than or equal to a temperature threshold.
In some embodiments, referring to fig. 8, the apparatus further comprises:
a second obtaining module 406, configured to obtain a pressure difference between the front end and the rear end of the GPF when the heating duration of the heating circuit is less than a duration threshold and the temperature of the GPF is less than a temperature threshold;
a third control module 407 configured to control the heating circuit to stop heating when the pressure difference is less than a second pressure threshold.
In the embodiment of the application, when the GPF meets the regeneration control condition and the electrical heating regeneration condition in sequence, the automobile can electrically heat the GPF through the GPF heating circuit to realize the regeneration of the GPF, so that the regeneration of the GPF is not required to be realized by controlling the ignition angle, the GPF is not required to be passively controlled, the regeneration control efficiency of the GPF is improved, and the power economy and the user viscosity are improved.
It should be noted that: in the GPF regeneration control device for an automobile according to the above embodiment, when controlling the GPF regeneration of the automobile, 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 device of the vehicle provided in the above embodiment and the GPF regeneration control method of the vehicle belong to the same concept, and specific implementation processes thereof are described in detail in the method embodiment and are not described herein again.
The embodiment of the application also 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 (8)
1. A GPF regeneration control method for an automobile, the method comprising:
in the running process of an engine of an automobile, when a particulate matter trap GPF of the automobile meets a regeneration control condition, fault detection is carried out on a heating circuit in the GPF;
when the heating circuit breaks down, displaying first prompt information through an instrument, wherein the first prompt information is used for prompting that the heating circuit breaks down;
diagnosing a function of a component in the GPF other than the heating circuit when there is no fault in the heating circuit; when the functions of parts except the heating circuit in the GPF are normal, acquiring the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile; determining whether the GPF meets an electric heating regeneration condition or not according to the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile;
when the GPF meets the electric heating regeneration condition, controlling a heating circuit in the GPF to electrically heat the GPF so as to realize the regeneration of the GPF.
2. The method of claim 1, wherein the detecting a fault in a heating circuit in a particulate matter trap (GPF) of a vehicle when the GPF meets a regeneration control condition during operation of an engine of the vehicle comprises:
acquiring an operation signal of a heating element in the heating circuit and a voltage signal of a heating line when the GPF satisfies the regeneration control condition during the operation of the engine;
determining that the heating circuit is malfunctioning when the operating signal and the voltage signal meet a fault condition;
determining that the heating circuit is not malfunctioning when the operating signal and/or the voltage signal do not comply with a fault condition.
3. The method of claim 1, wherein determining whether the GPF satisfies an electrical heating regeneration condition based on a pressure differential across the front and back ends of the GPF, a temperature of the GPF, and a supply voltage of the vehicle comprises:
determining whether the pressure difference is greater than or equal to a first pressure threshold, whether the temperature of the GPF is less than a temperature threshold, and whether the power supply voltage is within a voltage range;
determining that the GPF satisfies the electrically heated regeneration condition when the pressure difference is greater than or equal to the first pressure threshold, the temperature of the GPF is less than the temperature threshold, and the supply voltage is within a voltage range.
4. The method of claim 1, wherein after controlling a heating circuit in the GPF to electrically heat the GPF when the GPF satisfies the electrically heated regeneration condition, further comprising:
detecting a heating time of the heating circuit, and/or detecting a temperature of the GPF;
and when the heating time of the heating circuit is greater than or equal to a time threshold and/or the temperature of the GPF is greater than or equal to a temperature threshold, controlling the heating circuit to stop heating.
5. The method of claim 1 or 4, wherein after controlling a heating circuit in the GPF to electrically heat the GPF when the GPF satisfies the electrically heated regeneration condition, further comprising:
when the heating time of the heating circuit is smaller than a time threshold and the temperature of the GPF is smaller than a temperature threshold, acquiring a pressure difference value of the front end and the rear end of the GPF;
and when the pressure difference value is smaller than a second pressure threshold value, controlling the heating circuit to stop heating.
6. A GPF regeneration control apparatus for an automobile, characterized by comprising:
the device comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring the operation information of the automobile when a particle trap GPF of the automobile meets a regeneration control condition in the running process of the engine of the automobile, and the operation information comprises the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile;
the determining module is used for determining whether the GPF meets an electric heating regeneration condition or not according to the operation information;
the first control module is used for controlling a heating circuit in the GPF to electrically heat the GPF to realize the regeneration of the GPF when the GPF meets the electrical heating regeneration condition;
the first obtaining module comprises:
the detection submodule is used for carrying out fault detection on a heating circuit in the GPF when the GPF meets the regeneration control condition in the running process of the engine of the automobile;
the diagnosis submodule is used for displaying first prompt information through an instrument when the heating circuit breaks down, and the first prompt information is used for prompting the heating circuit to break down; diagnosing a function of a component in the GPF other than the heating circuit when there is no fault in the heating circuit;
and the acquisition submodule is used for acquiring the pressure difference value of the front end and the rear end of the GPF, the temperature of the GPF and the power supply voltage of the automobile when the functions of parts except the heating circuit in the GPF are normal.
7. The apparatus of claim 6, the detection sub-module to:
acquiring an operation signal of a heating element in the heating circuit and a voltage signal of a heating line when the GPF satisfies the regeneration control condition during the operation of the engine;
determining that the heating circuit is malfunctioning when the operating signal and the voltage signal meet a fault condition;
determining that the heating circuit is not malfunctioning when the operating signal and/or the voltage signal do not comply with a fault condition.
8. 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 5.
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