CN114439585A - Vehicle data processing method, processing device, storage medium and processor - Google Patents
Vehicle data processing method, processing device, storage medium and processor Download PDFInfo
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- CN114439585A CN114439585A CN202210130900.2A CN202210130900A CN114439585A CN 114439585 A CN114439585 A CN 114439585A CN 202210130900 A CN202210130900 A CN 202210130900A CN 114439585 A CN114439585 A CN 114439585A
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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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- 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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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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
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1611—Particle filter ash amount
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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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- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses a vehicle data processing method, a vehicle data processing device, a storage medium and a processor. Wherein, the method comprises the following steps: acquiring the carbon capacity and the pressure difference value of a gasoline engine particle trap of a vehicle; respectively comparing the carbon loading capacity and the differential pressure value with preset values to obtain a first comparison result; and determining the active regeneration state of the gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the active regeneration state comprises at least one of the following states: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state; generating control information according to the active regeneration state, wherein the control information comprises at least one of the following: the command for maintaining the current active regeneration state of the gasoline engine particle catcher and the command for correcting the air-fuel ratio parameter. The technical scheme of the invention solves the problem that a gasoline engine particle trap (GPF) is easy to block due to the rise of exhaust back pressure.
Description
Technical Field
The invention relates to the technical field of vehicle data processing, in particular to a vehicle data processing method, a vehicle data processing device, a storage medium and a processor.
Background
Gpf (gasoline particulate filter), i.e., a gasoline engine particulate trap, is mainly applied to Gasoline Direct Injection (GDI) engines to reduce particulate emissions thereof so as to meet increasingly stringent regulatory requirements. GPF is a wall-flow structure, and the purpose of removing soot is achieved by trapping soot particles in exhaust on a wall surface, but the continuous accumulation of soot particles can cause GPF blockage, so that the problems of exhaust back pressure rise, engine fuel economy deterioration and the like are caused. To restore the filtering function of the GPF, periodic regeneration of the GPF filled with soot particulates is required.
The engine's ECU can calculate the mass of soot particulates accumulated in the GPF, referred to as the carbon load. When the carbon load in the GPF reaches a set regeneration limit value, a reasonable strategy such as actively changing the operating parameters of an engine is adopted, the internal temperature of the GPF is heated to about 600 ℃ (or above), oxygen in exhaust gas is increased through air-fuel ratio control to rapidly oxidize particulate matters in the GPF, and the purpose of removing the particulate matters in the GPF is achieved, wherein the strategy is called an active regeneration strategy; such periodic regeneration of the GPF, which is actively performed after determination by the ECU of the vehicle, is called active regeneration. However, the active regeneration of the GPF requires certain conditions, such as high and low vehicle speed, high and low engine water temperature, high and low internal GPF temperature, and the like, and if any condition is not met, the vehicle cannot enter the active regeneration.
However, in many cases, the active regeneration is insufficient or not conditional, as exemplified by the following:
1. the vehicle is often driven at a low speed (e.g. 40Km/h) or in a very congested place, and the vehicle speed condition of active regeneration cannot be satisfied.
2. The vehicle is usually driven in a short distance after the cold machine (the water temperature of the engine is equivalent to the air temperature) is started, so that the water temperature of the engine is not completely heated, the vehicle is flamed out, and the water temperature condition cannot be met.
3. The vehicle is often driven in places with low air temperature, such as northern cities in winter, and the air temperature is extremely low; when the vehicle is driven at a low temperature, the soot particles generated by the engine are more, the carbon loading accumulated in GPF is more, and insufficient regeneration can be caused if the driving working condition does not meet the condition of active regeneration.
After the above situation occurs, the carbon loading in the GPF is increased continuously, which may cause exhaust back pressure to rise and engine fuel economy to deteriorate, and too high back pressure may even cause some positions in the engine exhaust system to have too high temperature, causing damage; especially the carbon build-up can lead to GPF plugging, damage to the GPF itself or failure of the engine to start.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a vehicle data processing method, a processing device, a storage medium and a processor, which at least solve the technical problem that a gasoline engine particle trap (GPF) is easy to block due to the fact that exhaust back pressure is increased.
According to an aspect of an embodiment of the present invention, there is provided a vehicle data processing method including: acquiring the carbon loading and the differential pressure value of a gasoline engine particle trap of a vehicle; respectively comparing the carbon loading capacity and the differential pressure value with preset values to obtain a first comparison result; determining a regeneration state of a gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the regeneration state comprises at least one of the following conditions: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state; generating control information according to the regeneration state, wherein the control information comprises at least one of the following: the command for maintaining the current regeneration state of the gasoline engine particulate trap and the command for correcting the air-fuel ratio parameter.
Optionally, comparing the carbon loading and the differential pressure value with preset values to obtain a first comparison result; determining a regeneration state of the gasoline engine particulate trap according to the first comparison result, comprising: comparing the carbon capacity with a first preset value and a second preset value to obtain a second comparison result, wherein the second comparison result comprises that the carbon capacity is smaller than the first preset value, and the first preset value is smaller than the second preset value; comparing the differential pressure value with a third preset value to obtain a third comparison result, wherein the third comparison result comprises that the differential pressure value is smaller than the third preset value; and determining the regeneration state of the gasoline engine particle catcher as an active regeneration state according to the second comparison result and the third comparison result.
Optionally, the method further comprises: comparing the carbon loading with the first preset value and the second preset value to obtain a fourth comparison result, wherein the fourth comparison result comprises: the carbon loading is greater than a first preset value and less than a second preset value; comparing the differential pressure value with a third preset value to obtain a fifth comparison result, wherein the fifth comparison result comprises that the differential pressure value is smaller than the third preset value; determining the regeneration state of the gasoline engine particle catcher as a limited active regeneration state according to the fourth comparison result and the fifth comparison result; control information is generated based on the limited active regeneration state, wherein the control information includes an instruction to modify the air-fuel ratio parameter.
Optionally, the generating of the control information according to the limiting active regeneration state comprises: acquiring the air inlet flow of the gasoline engine particle catcher; control information is generated according to the intake air flow rate.
Optionally, the method further comprises: comparing the carbon loading with the first preset value and the second preset value to obtain a sixth comparison result, wherein the sixth comparison result comprises: the carbon loading is less than a second preset value; comparing the differential pressure value with a third preset value to obtain a seventh comparison result, wherein the seventh comparison result comprises that the differential pressure value is smaller than the third preset value; determining the regeneration state of the gasoline engine particle catcher as a mixed limitation active regeneration state according to the sixth comparison result and the seventh comparison result; control information is generated based on the hybrid-limited active regeneration state, wherein the control information includes a command to modify an air-fuel ratio parameter and a command to limit an engine torque output.
Optionally, the method further comprises: comparing the differential pressure value with a third preset value to obtain an eighth comparison result, wherein the eighth comparison result comprises that the differential pressure value is greater than the third preset value; according to the eighth comparison result, determining that the regeneration state of the gasoline engine particulate trap is a mixed limitation active regeneration state; control information is generated based on the hybrid-limited active regeneration state, wherein the control information includes a command to modify an air-fuel ratio parameter and a command to limit an engine torque output.
Optionally, the generating of the control information according to the hybrid limit active regeneration state comprises: acquiring the rotating speed of an engine of a vehicle; control information is generated based on the rotational speed of the engine.
According to another aspect of the embodiments of the present invention, there is also provided a vehicle data processing apparatus including: the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the carbon loading and the differential pressure value of a gasoline engine particle trap of a vehicle; the comparison unit is used for comparing the carbon loading capacity and the differential pressure value with preset values respectively to obtain a first comparison result; and a determining unit for determining the regeneration state of the gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the regeneration state comprises at least one of the following conditions: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state; a generation unit for generating control information according to the regeneration state, wherein the control information comprises at least one of the following: the command for maintaining the current active regeneration state of the gasoline engine particle catcher and the command for correcting the air-fuel ratio parameter.
According to another aspect of the embodiments of the present invention, there is also provided a nonvolatile storage medium including a stored program, wherein a device in which the nonvolatile storage medium is controlled to execute the above-described vehicle data processing method when the program is executed.
According to another aspect of the embodiments of the present invention, there is also provided a processor for running a program, wherein the program executes the processing method of the vehicle data.
In the embodiment of the invention, the carbon loading amount and the differential pressure value of the gasoline engine particle trap of the vehicle are obtained, the carbon loading amount and the differential pressure value are respectively compared with the preset values to obtain a first comparison result, the regeneration state of the gasoline engine particle trap matched with the vehicle is determined according to the first comparison result, and the control information is generated according to the regeneration state. The gasoline engine particle trap (GPF) is controlled to be regenerated according to the generated control information, carbon deposit in the gasoline engine particle trap (GPF) is removed in time, the purpose of controlling the combustion speed of the carbon deposit in the gasoline engine particle trap (GPF) is achieved, the problem that the gasoline engine particle trap (GPF) is easy to block due to rising of exhaust back pressure is solved, and therefore the technical effect of protecting the GPF and vehicles is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a first embodiment of an alternative vehicle data processing method according to the present invention;
FIG. 2 is a flow chart of an alternative method for determining an active regeneration status of a gasoline engine particulate trap based on a first comparison result, in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart of a second embodiment of an alternative vehicle data processing method according to the present invention;
FIG. 4 is a flow chart of a third embodiment of an alternative vehicle data processing method according to the present invention;
fig. 5 is a block diagram of an alternative vehicle data processing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided a method embodiment of a method for processing vehicle data, it being noted that the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than presented herein.
Fig. 1 is a processing method of vehicle data according to an embodiment of the present invention, as shown in fig. 1, the method including the steps of:
step S102, acquiring the carbon capacity and the differential pressure value of a gasoline engine particle trap of a vehicle;
step S104, comparing the carbon loading capacity and the differential pressure value with preset values respectively to obtain a first comparison result;
step S106, determining the regeneration state of the gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the regeneration state comprises at least one of the following conditions: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state;
step S108, generating control information according to the active regeneration state, wherein the control information comprises at least one of the following: the command for maintaining the current active regeneration state of the gasoline engine particle catcher and the command for correcting the air-fuel ratio parameter.
Through the steps, the carbon capacity and the differential pressure value of the gasoline engine particle trap of the vehicle are obtained, the carbon capacity and the differential pressure value are respectively compared with the preset value to obtain a first comparison result, the regeneration state of the gasoline engine particle trap matched with the vehicle is determined according to the first comparison result, and control information is generated according to the regeneration state, so that the purpose of controlling the combustion speed of carbon deposition inside the gasoline engine particle trap (GPF) is achieved, the problem that the gasoline engine particle trap (GPF) is easy to block due to rising of exhaust back pressure is solved, and the technical effect of protecting the GPF and the vehicle is achieved.
According to a specific embodiment of the application, a pressure difference value is obtained through calculation of the ECU by respectively installing a pressure difference sensor before and after a gasoline engine particle trap (GPF), and the pressure difference value has a certain corresponding relation with the carbon loading capacity in the gasoline engine particle trap (GPF): the greater the carbon loading, the greater the differential pressure value, and the smaller the carbon loading, the smaller the differential pressure value. Through the size of the differential pressure value, the carbon accumulation condition in the gasoline engine particulate filter (GPF) can be judged, and the differential pressure value calculated in the ECU is directly used in the application. The ECU can know the carbon loading amount in a gasoline engine particle trap (GPF) through a carbon loading amount or a differential pressure sensor signal of an engine, and when the carbon loading amount or the differential pressure value exceeds a certain threshold value, a function of limiting the torque (torque limit) of the engine is triggered, and on one hand, the torque limit function can limit the maximum torque of the engine, so that the load of the engine is reduced, the exhaust temperature is reduced, and the vehicle is protected. On the other hand, the driver can obviously feel the change of the vehicle state by a method of limiting the torque, and then go to a 4S shop to carry out maintenance work of the gasoline engine particulate filter (GPF). Specifically, the carbon load is represented by M, the differential pressure value is represented by C, the preset values comprise a first preset value, a second preset value and a third preset value, the first preset value is M1, the second preset value is M2, the third preset value is C-MAX for example, when the carbon load exceeds the first preset value, namely M is more than M1, the burning speed of carbon in a gasoline engine particulate trap (GPF) during active regeneration needs to be weakened, and the burning speed of carbon in the gasoline engine particulate trap (GPF) during active regeneration is weakened by controlling an air-fuel ratio and an ignition angle. When the carbon load exceeds a second preset value, namely M is larger than M2, the torque of the engine needs to be limited, and M2 is larger than M1 by limiting the maximum torque threshold value under different engine speeds.
Alternatively, as shown in fig. 2, comparing the carbon loading and the differential pressure value with preset values to obtain a first comparison result, and determining the active regeneration state of the gasoline engine particulate trap according to the first comparison result, comprising: step S201, comparing the carbon loading with a first preset value and a second preset value to obtain a second comparison result, wherein the second comparison result includes that the carbon loading is smaller than the first preset value, and the first preset value is smaller than the second preset value, and step S202, comparing the differential pressure value with a third preset value to obtain a third comparison result, wherein the third comparison result includes that the differential pressure value is smaller than the third preset value. And step S203, determining the regeneration state of the gasoline engine particulate filter as an active regeneration state according to the second comparison result and the third comparison result. Specifically, when the second comparison result is M < M1 < M2 and the third comparison result is C < C-MAX, the regeneration state of the gasoline engine particulate filter (GPF) is determined to be an active regeneration state, and the active regeneration range F is set to 1, namely, the active regeneration is normally carried out. Therefore, the active regeneration can be carried out based on the carbon capacity of the gasoline engine particle trap (GPF) and the limit value of the differential pressure value, the active regeneration is ensured to be sufficient, the purpose of removing carbon deposition in the gasoline engine particle trap (GPF) is achieved, and the reliability of the gasoline engine particle trap (GPF) is improved.
Alternatively, as shown in fig. 3, a flowchart of a second embodiment of an optional vehicle data processing method according to the present application includes: step S301, comparing the carbon loading with the first preset value and the second preset value to obtain a fourth comparison result, where the fourth comparison result includes: and comparing the pressure difference value with a third preset value to obtain a fifth comparison result, wherein the fifth comparison result comprises that the pressure difference value is smaller than the third preset value. Step S302, determining the regeneration state of the gasoline engine particulate trap as a limited active regeneration state according to the fourth comparison result and the fifth comparison result, and step S303, generating control information according to the limited active regeneration state, wherein the control information comprises an instruction for correcting an air-fuel ratio parameter. Specifically, when the fourth comparison result is M1 < M2 and the fifth comparison result is C < C-MAX, the active regeneration range F is set to 2, active regeneration is limited, that is, the regeneration state of the gasoline engine particulate filter (GPF) is determined to be the limited active regeneration state, and control information is generated according to the limited active regeneration state. This enables limiting the rate of active regeneration when the carbon loading in the gasoline engine particulate trap (GPF) is too high, thereby protecting the GPF.
Optionally, the generating of the control information according to the limiting active regeneration state comprises: and acquiring the air intake flow of the gasoline engine particle trap, and generating control information according to the air intake flow. The intake flow of the gasoline engine particulate trap (GPF) is represented by P, the intake flow P is calculated through the engine exhaust flow in the ECU, and a correction coefficient for limiting the air-fuel ratio is obtained according to the intake flow P.
Optionally, the method further comprises: comparing the carbon loading with the first preset value and the second preset value to obtain a sixth comparison result, wherein the sixth comparison result comprises: comparing the pressure difference value with a third preset value to obtain a seventh comparison result, wherein the seventh comparison result comprises that the pressure difference value is smaller than the third preset value; and determining the regeneration state of the gasoline engine particulate trap as a mixed limitation active regeneration state according to the sixth comparison result and the seventh comparison result, and generating control information according to the mixed limitation active regeneration state, wherein the control information comprises a command for correcting the air-fuel ratio parameter and a command for limiting the torque output of the engine. Specifically, when the sixth comparison result is M < M2 and the seventh comparison result is C < C-MAX, the regeneration state of the gasoline engine particulate trap (GPF) is determined to be a hybrid limited active regeneration state. Therefore, the working reliability of the gasoline engine particulate filter (GPF) in the hybrid limited active regeneration state can be improved, the regeneration state of the gasoline engine particulate filter (GPF) is controlled by correcting the air-fuel ratio and limiting the engine torque, and the GPF and the vehicle can be effectively protected.
Optionally, the method further comprises: comparing the differential pressure value with a third preset value to obtain an eighth comparison result, wherein the eighth comparison result comprises that the differential pressure value is greater than the third preset value; and according to the eighth comparison result, determining the regeneration state of the gasoline engine particulate trap as a mixed limitation active regeneration state, and generating control information according to the mixed limitation active regeneration state, wherein the control information comprises a command for correcting the air-fuel ratio parameter and a command for limiting the torque output of the engine. Specifically, when the eighth comparison result is C > C-MAX, the regeneration status of the gasoline engine particulate trap (GPF) is determined to be a hybrid limited active regeneration status. In the present embodiment, when the eighth comparison result is C > C-MAX, the engine torque is limited (hereinafter referred to as torque limiter) when the active regeneration range F is set to 3 regardless of the relationship between M and M1 or M2. Therefore, when the differential pressure value is too large, the working reliability of a gasoline engine particle trap (GPF) in a mixed limit active regeneration state is further improved by limiting the torque of the engine, and the technical effect of protecting the internal structure of the GPF is achieved.
Optionally, generating control information according to the hybrid-limited active regeneration state comprises: the rotational speed of an engine of a vehicle is acquired, and control information is generated based on the rotational speed of the engine. The reliability of torque limitation of the engine can be improved, control information is generated according to the rotating speed of the engine, the maximum torque of the engine can be limited, the load of the engine is reduced, the exhaust temperature is reduced, and the vehicle is protected.
According to one embodiment of the present application, when the vehicle is running, the corresponding work is performed according to the value of F: if the active regeneration range F is 1, the ECU does not perform torque limitation and does not interfere with the strategy and parameters of the original active regeneration, and if F is 2 or F is 3, the ECU limits the air-fuel ratio during active regeneration according to the following table (where the temperature inside the GPF is calculated by the ECU, and is set as T, a, b, and c are values between M1 and M2, and used for performing active regeneration limitation in stages):
note: in the table, λ 1 may be set to different values (range 0 to 1), and the table is only illustrative, and λ 1 represents an air-fuel ratio.
The correction coefficient for limiting the air-fuel ratio is obtained according to the intake air flow rate P, and the combustion and temperature rise inside a gasoline engine particulate filter (GPF) are more severe when the intake air flow rate P is larger, so that the air-fuel ratio needs to be correspondingly reduced. The reduction λ 2 is given by the following table:
note: the λ 2 in the above table can be set to different values (range 0-1), which is only shown in the table.
If F is 3, the ECU performs engine torque limitation by the following table:
note: x in the above table may be set to different values (ranging from 0 to engine torque capacity) and is shown only schematically.
As shown in fig. 4, which is a flowchart of a fourth embodiment of an optional vehicle data processing method according to the present application, after a process starts, first, a carbon load in a GPF is calculated through an ECU carbon quantity model, and the ECU calculates a differential pressure value through a differential pressure sensor signal, then calculates a value of an active regeneration range F, determines a regeneration state of a gasoline engine particulate filter (GPF) according to the value of F and performs corresponding control, when F is equal to 1, does not perform torque limitation and does not interfere with an original active regeneration strategy and parameters, then needs to determine whether the carbon load is smaller than a threshold for exiting the active regeneration, if so, exits the active regeneration, and ends the process; if not, the carbon loading in the GPF is continuously calculated through the ECU carbon quantity model, the ECU calculates the differential pressure value through the differential pressure sensor signal, then the value of the active regeneration range F is calculated, the regeneration state of the gasoline engine particle trap (GPF) is judged again according to the value of F, and corresponding control is carried out. When F is 2, calculating lambda (limit) lambda 1-lambda 2, wherein lambda (limit) represents an air-fuel ratio limit value, controlling the air-fuel ratio limit of the active regeneration through the ECU according to the calculation result so as to limit the active regeneration speed, judging whether the carbon capacity is smaller than a threshold for quitting the active regeneration or a 4S shop for maintenance, if so, quitting the active regeneration, and ending the process; if not, the carbon loading in the GPF is continuously calculated through the ECU carbon quantity model, the ECU calculates the differential pressure value through the differential pressure sensor signal, then the value of the active regeneration range F is calculated, the regeneration state of the gasoline engine particle trap (GPF) is judged again according to the value of F, and corresponding control is carried out. When F is 3, firstly limiting the torque of the engine, then calculating lambda (limit) lambda 1-lambda 2, wherein lambda (limit) represents an air-fuel ratio limit value, controlling the air-fuel ratio limit of the active regeneration through an ECU according to the calculation result so as to limit the active regeneration speed, then judging whether the carbon capacity is smaller than a threshold value for quitting the active regeneration or a 4S shop for maintenance, if so, quitting the active regeneration, and ending the process; if not, the carbon loading in the GPF is continuously calculated through the ECU carbon quantity model, the ECU calculates the differential pressure value through the differential pressure sensor signal, then the value of the active regeneration range F is calculated, the regeneration state of the gasoline engine particle trap (GPF) is judged again according to the value of F, and corresponding control is carried out. In this embodiment, when the carbon loading or the differential pressure sensor signal exceeds a certain threshold, the torque limiting function is triggered, on one hand, the torque limiting function can limit the maximum torque of the engine, so as to reduce the load of the engine and reduce the exhaust temperature, thereby protecting the vehicle, and on the other hand, the driver can obviously feel the change of the vehicle state by the torque limiting method, and then go to a 4S shop to perform GPF maintenance. When the carbon amount is too high, active regeneration is carried out, a large amount of carbon deposition in the GPF burns, the heat accumulation temperature rises, once the temperature tolerance limit of the GPF physical structure is exceeded, the internal structure of the GPF is damaged, and economic loss or potential safety hazard is caused. Under the condition, the oxygen flow entering the GPF and the temperature inside the GPF need to be controlled, and by adopting the technical scheme, the combustion speed of carbon deposition inside the GPF can be effectively controlled, and the technical effect of protecting the GPF is realized.
According to another embodiment of the present application, there is also provided a vehicle data processing apparatus, as shown in fig. 5, a block diagram of an optional vehicle data processing apparatus according to an embodiment of the present invention is provided, including: an acquiring unit 40 for acquiring a carbon load and a pressure difference value of a gasoline engine particulate trap of a vehicle, a comparing unit 42 for comparing the carbon load and the pressure difference value with preset values, respectively, to obtain a first comparison result, a determining unit 44, and a generating unit 46. The determination unit 44 determines a regeneration status of the gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the regeneration status includes at least one of: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state. The generation unit 46 generates control information according to the reproduction state, wherein the control information includes at least one of: the command for maintaining the current regeneration state of the gasoline engine particulate trap and the command for correcting the air-fuel ratio parameter.
In the embodiment of the invention, the carbon capacity and the pressure difference value of the gasoline engine particle trap of the vehicle are obtained, the carbon capacity and the pressure difference value are respectively compared with the preset value to obtain the first comparison result, the regeneration state of the gasoline engine particle trap matched with the vehicle is determined according to the first comparison result, and the control information is generated according to the regeneration state, so that the aim of controlling the combustion speed of carbon deposition in the gasoline engine particle trap (GPF) is fulfilled, the problem that the gasoline engine particle trap (GPF) is easy to block due to the rise of exhaust back pressure is solved, and the technical effect of protecting the internal structure of the GPF is realized.
According to another specific embodiment of the present application, there is also provided a nonvolatile storage medium including a stored program, wherein the apparatus in which the nonvolatile storage medium is controlled when the program is executed performs the steps of the processing method of the vehicle data in the above embodiment.
According to another specific embodiment of the present application, there is further provided a processor for executing a program, where the program executes the steps of the method for processing vehicle data in the foregoing embodiments when running.
By adopting the technical scheme, the active regeneration rate can be limited when the carbon loading in the GPF is too high, and the active regeneration rate is limited and the engine torque is limited when the differential pressure value of the differential pressure sensor before and after the GPF is too large, so that the GPF and a vehicle are protected, and the active regeneration rate can be limited by limiting the air-fuel ratio based on two factors of the carbon loading and the internal temperature of the GPF.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of processing vehicle data, comprising:
acquiring the carbon loading and the differential pressure value of a gasoline engine particle trap of a vehicle;
respectively comparing the carbon loading capacity and the differential pressure value with preset values to obtain a first comparison result;
determining a regeneration status of the gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the regeneration status comprises at least one of the following conditions: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state;
generating control information according to the regeneration state, wherein the control information comprises at least one of the following: the command for maintaining the current regeneration state of the gasoline engine particulate trap and the command for correcting the air-fuel ratio parameter.
2. The method according to claim 1, characterized in that the carbon loading, the differential pressure value and a preset value are compared, obtaining a first comparison result; determining a regeneration state of the gasoline engine particulate trap according to the first comparison result, comprising:
comparing the carbon loading with a first preset value and a second preset value to obtain a second comparison result, wherein the second comparison result comprises that the carbon loading is smaller than the first preset value, and the first preset value is smaller than the second preset value;
comparing the differential pressure value with a third preset value to obtain a third comparison result, wherein the third comparison result comprises that the differential pressure value is smaller than the third preset value;
and determining the regeneration state of the gasoline engine particle trap as the active regeneration state according to the second comparison result and the third comparison result.
3. The method of claim 2, further comprising:
comparing the carbon loading with a first preset value and a second preset value to obtain a fourth comparison result, wherein the fourth comparison result comprises: the carbon loading is greater than the first preset value and less than the second preset value;
comparing the differential pressure value with a third preset value to obtain a fifth comparison result, wherein the fifth comparison result comprises that the differential pressure value is smaller than the third preset value;
determining the regeneration state of the gasoline engine particulate trap as the active regeneration limiting state according to the fourth comparison result and the fifth comparison result;
and generating the control information according to the active regeneration limiting state, wherein the control information comprises an instruction for correcting an air-fuel ratio parameter.
4. The method of claim 3, wherein generating the control information based on the limited active regeneration status comprises:
acquiring the air inlet flow of the gasoline engine particle catcher;
the control information is generated according to the intake air flow rate.
5. The method of claim 2, further comprising:
comparing the carbon loading with a first preset value and a second preset value to obtain a sixth comparison result, wherein the sixth comparison result comprises: the carbon loading is less than the second preset value;
comparing the differential pressure value with a third preset value to obtain a seventh comparison result, wherein the seventh comparison result comprises that the differential pressure value is smaller than the third preset value;
determining the regeneration state of the gasoline engine particulate trap as the hybrid limit active regeneration state according to the sixth comparison result and the seventh comparison result;
generating the control information based on the hybrid-limited active regeneration state, wherein the control information includes a command to modify an air-fuel ratio parameter and a command to limit an engine torque output.
6. The method of claim 2, further comprising:
comparing the differential pressure value with a third preset value to obtain an eighth comparison result, wherein the eighth comparison result comprises that the differential pressure value is greater than the third preset value;
determining the regeneration state of the gasoline engine particulate trap as the hybrid limit active regeneration state according to the eighth comparison result;
generating the control information based on the hybrid-limited active regeneration state, wherein the control information includes a command to modify an air-fuel ratio parameter and a command to limit an engine torque output.
7. The method of claim 5 or 6, wherein generating the control information according to the hybrid limited active regeneration state comprises:
acquiring the rotating speed of an engine of the vehicle;
and generating the control information according to the rotating speed of the engine.
8. A vehicle data processing apparatus, characterized by comprising:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the carbon loading and the differential pressure value of a gasoline engine particle trap of a vehicle;
the comparison unit is used for comparing the carbon loading capacity and the differential pressure value with preset values respectively to obtain a first comparison result;
a determination unit for determining a regeneration state of the gasoline engine particulate trap matched with the vehicle according to the first comparison result, wherein the regeneration state comprises at least one of the following conditions: an active regeneration state, a limited active regeneration state, a hybrid limited active regeneration state;
a generating unit configured to generate control information according to the reproduction state, wherein the control information includes at least one of: the command for maintaining the current active regeneration state of the gasoline engine particle catcher and the command for correcting the air-fuel ratio parameter.
9. A nonvolatile storage medium characterized by comprising a stored program, wherein a device on which the nonvolatile storage medium is installed is controlled to execute a processing method of vehicle data according to any one of claims 1 to 7 when the program is executed.
10. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the method for processing vehicle data according to any one of claims 1 to 7 when running.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753907A (en) * | 2022-05-07 | 2022-07-15 | 中国第一汽车股份有限公司 | Control method and device of particle catcher, storage medium and vehicle |
| CN115095439A (en) * | 2022-07-25 | 2022-09-23 | 湖南道依茨动力有限公司 | Engine and control method and device thereof and readable storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016118A (en) * | 2012-12-27 | 2013-04-03 | 潍柴动力股份有限公司 | Control method and device for preventing regeneration and sintering of particle catcher |
| CN103711548A (en) * | 2013-12-06 | 2014-04-09 | 潍柴动力股份有限公司 | Method and system for preventing diesel engine particle trap from melting |
| CN105736091A (en) * | 2016-03-15 | 2016-07-06 | 清华大学 | Stage-by-stage regeneration control method, device and system for diesel particulate filter (DPF) |
| CN206522173U (en) * | 2017-01-19 | 2017-09-26 | 中国第一汽车股份有限公司 | A kind of diesel particulate trap active regeneration system forbid regeneration and forced regeneration control device |
| CN110925065A (en) * | 2019-12-17 | 2020-03-27 | 东风汽车集团有限公司 | Active regeneration grading control method for particle catcher |
| CN112761759A (en) * | 2021-02-01 | 2021-05-07 | 联合汽车电子有限公司 | Method for controlling gasoline engine particle trap fuel cut-off regeneration based on temperature model |
| CN113503207A (en) * | 2021-08-11 | 2021-10-15 | 安徽江淮汽车集团股份有限公司 | Control method and system for passive regeneration of hybrid electric vehicle |
| CN113565610A (en) * | 2021-06-29 | 2021-10-29 | 广东工业大学 | Method for judging working state of diesel vehicle particle catcher |
| CN113756917A (en) * | 2020-06-05 | 2021-12-07 | 比亚迪股份有限公司 | Tail gas treatment method and device and vehicle |
| CN113803138A (en) * | 2021-09-03 | 2021-12-17 | 潍柴动力股份有限公司 | Control method and control device of aftertreatment system and vehicle |
-
2022
- 2022-02-12 CN CN202210130900.2A patent/CN114439585B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016118A (en) * | 2012-12-27 | 2013-04-03 | 潍柴动力股份有限公司 | Control method and device for preventing regeneration and sintering of particle catcher |
| CN103711548A (en) * | 2013-12-06 | 2014-04-09 | 潍柴动力股份有限公司 | Method and system for preventing diesel engine particle trap from melting |
| CN105736091A (en) * | 2016-03-15 | 2016-07-06 | 清华大学 | Stage-by-stage regeneration control method, device and system for diesel particulate filter (DPF) |
| CN206522173U (en) * | 2017-01-19 | 2017-09-26 | 中国第一汽车股份有限公司 | A kind of diesel particulate trap active regeneration system forbid regeneration and forced regeneration control device |
| CN110925065A (en) * | 2019-12-17 | 2020-03-27 | 东风汽车集团有限公司 | Active regeneration grading control method for particle catcher |
| CN113756917A (en) * | 2020-06-05 | 2021-12-07 | 比亚迪股份有限公司 | Tail gas treatment method and device and vehicle |
| CN112761759A (en) * | 2021-02-01 | 2021-05-07 | 联合汽车电子有限公司 | Method for controlling gasoline engine particle trap fuel cut-off regeneration based on temperature model |
| CN113565610A (en) * | 2021-06-29 | 2021-10-29 | 广东工业大学 | Method for judging working state of diesel vehicle particle catcher |
| CN113503207A (en) * | 2021-08-11 | 2021-10-15 | 安徽江淮汽车集团股份有限公司 | Control method and system for passive regeneration of hybrid electric vehicle |
| CN113803138A (en) * | 2021-09-03 | 2021-12-17 | 潍柴动力股份有限公司 | Control method and control device of aftertreatment system and vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753907A (en) * | 2022-05-07 | 2022-07-15 | 中国第一汽车股份有限公司 | Control method and device of particle catcher, storage medium and vehicle |
| CN114753907B (en) * | 2022-05-07 | 2023-04-28 | 中国第一汽车股份有限公司 | Control method and device of particle catcher, storage medium and vehicle |
| CN115095439A (en) * | 2022-07-25 | 2022-09-23 | 湖南道依茨动力有限公司 | Engine and control method and device thereof and readable storage medium |
| CN115095439B (en) * | 2022-07-25 | 2024-05-31 | 湖南道依茨动力有限公司 | Engine, control method and device thereof, and readable storage medium |
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|---|---|
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