CN116988884A - Post-processing system oil injection control method, device, equipment and storage medium - Google Patents
Post-processing system oil injection control method, device, equipment and storage medium Download PDFInfo
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- CN116988884A CN116988884A CN202311272410.7A CN202311272410A CN116988884A CN 116988884 A CN116988884 A CN 116988884A CN 202311272410 A CN202311272410 A CN 202311272410A CN 116988884 A CN116988884 A CN 116988884A
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- 238000002347 injection Methods 0.000 title claims abstract description 366
- 239000007924 injection Substances 0.000 title claims abstract description 366
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000012805 post-processing Methods 0.000 title description 3
- 239000010729 system oil Substances 0.000 title description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 135
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 135
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 135
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 55
- 239000000446 fuel Substances 0.000 claims description 40
- 238000012545 processing Methods 0.000 claims description 23
- 238000003795 desorption Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 54
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical group [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/402—Multiple injections
- F02D41/405—Multiple injections with post injections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/08—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1412—Introducing closed-loop corrections characterised by the control or regulation method using a predictive controller
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The application discloses a method, a device, equipment and a storage medium for controlling oil injection of an aftertreatment system, which are applied to an engine aftertreatment system comprising a tightly coupled SCR, and specifically can comprise the following steps: according to the hydrocarbon HC covered quantity at the current moment and the temperature after the turbine of the engine, predicting a first type covered quantity corresponding to the preset moment; predicting a second type coverage amount corresponding to the preset moment according to the post-injection oil injection moment and the corresponding post-injection oil amount; and then calculating a predicted value of the hydrocarbon HC coverage amount corresponding to the preset moment, so that after-spraying information is reconfigured under the condition that the predicted value is larger than or equal to a preset first hydrocarbon HC coverage amount threshold value, and after-spraying oil amount is reduced, thereby reducing the hydrocarbon HC coverage amount on the close-coupled SCR to a certain extent, avoiding the burning failure of the close-coupled SCR caused by the oxidation of a large amount of hydrocarbon HC covered on the close-coupled SCR to a certain extent, and finally realizing the purpose of protecting the close-coupled SCR.
Description
Technical Field
The application relates to the technical field of engine aftertreatment, in particular to an oil injection control method, device and equipment of an aftertreatment system and a storage medium.
Background
At present, NO can be reduced by a double-spray selective catalytic reduction (Ammonia Slip Catalyst, ASC) aftertreatment technology x Is used for the discharge amount of the fuel. Exemplary, fig. 1 shows a schematic structural diagram of a dual-spray SCR aftertreatment technology circuit, which may specifically include: a close-coupled selective catalytic reducer (i.e., a close-coupled SCR), an ammonia oxidation catalyst (Ammonia Slip Catalyst, ASC) associated with the close-coupled SCR, a diesel oxidation catalyst (Diesel Oxidation Catalyst, DOC), a diesel particulate trap (Diesel Particulate Filter, DPF), a selective catalytic reducer SCR, and an ammonia oxidation catalyst ASC associated with the SCR.
For the existing double-injection SCR aftertreatment technology route, when in-cylinder post-injection lifting and discharging and in-cylinder far post-injection active regeneration are carried out, injected hydrocarbon HC (such as diesel oil) can be covered on the close-coupled SCR. If hydrocarbon HC covered on the close-coupled SCR oxidizes, the temperature in the close-coupled SCR is increased, and even the close-coupled SCR burns and melts to fail, so that the exhaust aftertreatment process is affected.
Disclosure of Invention
In view of the foregoing, the present application has been made in order to provide a fuel injection control method, apparatus, device, and storage medium for an aftertreatment system, so as to achieve the task of protecting a tightly coupled selective catalytic reducer SCR to some extent.
The specific scheme is as follows:
in a first aspect, a method for controlling fuel injection in an aftertreatment system is provided, the method being applied to an aftertreatment system of an engine, the aftertreatment system of the engine including a close-coupled SCR, the close-coupled SCR being a first SCR connected after a turbine of the engine, the method comprising:
acquiring the hydrocarbon HC covered quantity, the engine turbine rear temperature and the rear injection information corresponding to the current moment on the tightly coupled SCR at the current moment, wherein the rear injection information comprises the post-injection oil injection moment and the post-injection oil quantity corresponding to the oil injection moment, the oil injection moment is between the current moment and a preset moment, and the preset moment is later than the current moment;
invoking a preset first type coverage prediction model, and processing the hydrocarbon HC covered quantity and the post-turbine temperature of the engine to obtain a first type coverage quantity corresponding to the preset moment;
invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time;
calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
And under the condition that the predicted value of the hydrocarbon HC coverage is larger than or equal to a preset first hydrocarbon HC coverage threshold, calculating the post-injection quantity corresponding to the injection moment of a first preset multiple for the injection moment in the post-injection information to obtain a new post-injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-injection quantity corresponding to the injection moment in the post-injection information by utilizing the new post-injection quantity.
In a second aspect, an oil injection control device of an aftertreatment system is provided, and the oil injection control device is applied to an engine aftertreatment system, wherein the engine aftertreatment system includes a close-coupled SCR, and the close-coupled SCR is a first SCR connected after an engine turbine, and the device includes:
the data acquisition unit is used for acquiring the hydrocarbon HC covered quantity, the engine turbine rear temperature and the rear injection information corresponding to the current moment, wherein the rear injection information comprises the rear injection oil injection moment and the rear injection oil quantity corresponding to the oil injection moment, the oil injection moment is between the current moment and the preset moment, and the preset moment is later than the current moment;
the coverage prediction unit is used for calling a preconfigured first-class coverage prediction model, and processing the hydrocarbon HC covered quantity and the post-turbine temperature of the engine to obtain a first-class coverage corresponding to the preset moment; invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time; calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
And the fuel injection control unit is used for calculating the post-fuel injection quantity corresponding to the fuel injection moment of a first preset multiple for the fuel injection moment in the post-fuel injection information under the condition that the predicted value of the hydrocarbon HC coverage quantity is larger than or equal to a preset first hydrocarbon HC coverage quantity threshold value to obtain a new post-fuel injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-fuel injection quantity corresponding to the fuel injection moment in the post-fuel injection information by utilizing the new post-fuel injection quantity.
In a third aspect, there is provided an oil injection control apparatus of an aftertreatment system, including: a memory and a processor;
the memory is used for storing programs;
the processor is used for executing the program and realizing the steps of the oil injection control method of the aftertreatment system.
In a fourth aspect, a storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the method for controlling fuel injection of an aftertreatment system described above.
By means of the technical scheme, the method and the device can be applied to an engine aftertreatment system to realize the protection task of the tightly coupled SCR (namely, the first SCR connected after the turbine of the engine) contained in the engine aftertreatment system. Specifically, according to the scheme, a first type of coverage amount corresponding to a preset moment is predicted according to the hydrocarbon HC covered amount on the close-coupled SCR at the current moment and the temperature after the engine turbine, wherein the first type of coverage amount represents the hydrocarbon HC covered condition on the close-coupled SCR caused by historical factors; predicting a second type coverage corresponding to the preset moment according to post-injection information consisting of post-injection oil injection moment and post-injection oil quantity corresponding to the post-injection oil moment, wherein the second type coverage represents hydrocarbon HC coverage caused by post-injection operation after the current moment; and then calculating the sum of the first type coverage amount and the second type coverage amount to obtain a hydrocarbon HC coverage amount predicted value corresponding to the preset time, so that after-spraying information is reconfigured under the condition that the hydrocarbon HC coverage amount predicted value is larger than or equal to a preset first hydrocarbon HC coverage amount threshold value, after-spraying information is reduced, the hydrocarbon HC coverage amount on the close-coupled SCR is reduced to a certain extent, the heat release amount of hydrocarbon HC covered on the close-coupled SCR is reduced, the possibility of occurrence of burning failure of the close-coupled SCR is reduced to a certain extent, and finally the purpose of protecting the close-coupled SCR is achieved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 illustrates a schematic diagram of a dual-spray SCR aftertreatment technology circuit;
FIG. 2 is a schematic flow chart of a method for controlling fuel injection in an aftertreatment system according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a fuel injection control device of an aftertreatment system according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an oil injection control device of an aftertreatment system according to an embodiment of the present disclosure.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The application provides a method, a device, equipment and a storage medium for controlling oil injection of an aftertreatment system, which can be applied to an engine aftertreatment system comprising tightly coupled SCR (selective catalytic reduction) to realize the task of protecting the tightly coupled SCR.
The scheme of the application can be realized based on the terminal with the data processing capability, and the terminal can be a computer, a server, a cloud end and the like.
FIG. 2 is a flow chart illustrating a method of fuel injection control for an aftertreatment system that may be applied to an engine aftertreatment system including a close-coupled SCR, the close-coupled SCR being the first SCR to be connected after an engine turbine, in accordance with an embodiment of the present disclosure. As shown in connection with fig. 2, the method may include:
and step S101, acquiring the hydrocarbon HC covered quantity, the engine turbine rear temperature and the rear injection information corresponding to the current moment on the close-coupled SCR at the current moment.
It should be noted that the hydrocarbon HC covered amount on the close-coupled SCR at the present time is caused by a number of post-injection operations before the present time, that is, the hydrocarbon HC covered amount at the present time is an accumulated result. In addition, as the temperature of the close-coupled SCR increases, hydrocarbon HC covered on the close-coupled SCR is oxidized, so that the coverage amount of hydrocarbon HC on the close-coupled SCR is reduced, and the reduction amount of hydrocarbon HC is related to the current temperature condition.
In addition to the above-described history factors, the post-injection factor between the current time and the preset time of the amount of coverage to be predicted is another factor affecting the hydrocarbon HC coverage. The post-injection factor may be represented by post-injection information, which may be calculated by an ECU (electronic control unit) of the vehicle according to the engine speed and torque, and may include a post-injection timing of the post-injection and a post-injection amount corresponding to the post-injection timing, where the injection timing is between the current timing and the preset timing, and the preset timing is later than the current timing.
Step S102, a preconfigured first-class coverage prediction model is called, and the hydrocarbon HC covered quantity and the post-turbine temperature of the engine are processed to obtain a first-class coverage quantity corresponding to the preset moment.
Wherein the first type of coverage may be characterized by a history of hydrocarbon HC coverage over the close-coupled SCR.
And step 103, calling a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time.
Wherein the second type of coverage amount may be indicative of hydrocarbon HC coverage resulting from post-injection operation after the current time. In addition, the steps S102 and S103 are performed independently, and the two steps may be performed simultaneously or sequentially, and for example, step S103 may be performed first and then step S102 may be performed.
Optionally, the post-injection information may include several sets of sub-information, where each set of sub-information includes an injection time and a post-injection amount corresponding to the injection time. On the basis of the above, each group of sub-information is processed respectively to obtain the second class coverage corresponding to each group of sub-information, and the sum of the second class coverage corresponding to each group of sub-information is used as the second class coverage corresponding to the preset time.
And step S104, calculating the sum of the first type coverage and the second type coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset time.
Step S105, reducing and updating the post-injection quantity when the predicted hydrocarbon HC coverage value is greater than or equal to a preset first hydrocarbon HC coverage threshold.
The condition that the predicted value of the hydrocarbon HC coverage is greater than or equal to a preset first hydrocarbon HC coverage threshold is characterized in that if post-injection is performed according to the post-injection information, the possibility that the hydrocarbon HC coverage at the preset moment causes the close-coupled SCR to fail in burning, and the post-injection amount after the current moment needs to be reduced to reduce the hydrocarbon HC coverage at the preset moment. Specifically, the reducing and updating the post-injection amount may include:
And calculating the post-injection quantity corresponding to the injection time of a first preset multiple for the injection time in the post-injection information to obtain a new post-injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity.
It should be noted that, when the predicted value of the hydrocarbon HC coverage is smaller than the first hydrocarbon HC coverage threshold, it is characterized in that, in the case of performing post-injection according to the post-injection information, the possibility of occurrence of a burning failure of the close-coupled SCR at the preset time is smaller, and the post-injection information is not required to be modified.
According to the method, first, according to the hydrocarbon HC covered quantity on the close-coupled SCR at the current moment and the temperature after the turbine of the engine, a first type of covered quantity corresponding to the preset moment is predicted, wherein the first type of covered quantity represents the hydrocarbon HC covered condition on the close-coupled SCR caused by historical factors; predicting a second type coverage corresponding to the preset moment according to post-injection information consisting of post-injection oil injection moment and post-injection oil quantity corresponding to the post-injection oil moment, wherein the second type coverage represents hydrocarbon HC coverage caused by post-injection operation after the current moment; and then calculating the sum of the first type coverage amount and the second type coverage amount to obtain a hydrocarbon HC coverage amount predicted value corresponding to the preset time, so that after-spraying information is reconfigured under the condition that the hydrocarbon HC coverage amount predicted value is larger than or equal to a preset first hydrocarbon HC coverage amount threshold value, after-spraying information is reduced, the hydrocarbon HC coverage amount on the close-coupled SCR is reduced to a certain extent, and the close-coupled SCR burning failure caused by the oxidation of a large amount of hydrocarbon HC covered on the close-coupled SCR is avoided to a certain extent.
In addition, in the case where the close-coupled SCR is vanadium-based, hydrocarbon HC may be covered on the close-coupled SCR, and if energy of hydrocarbon HC covered on the close-coupled SCR is released in a short time, the temperature of the close-coupled SCR will be rapidly increased, and the vanadium-based close-coupled SCR may fail. According to the scheme provided by the embodiment of the application, the releasable energy of the hydrocarbon HC can be represented by the hydrocarbon HC coverage amount, and the purpose of protecting the close-coupled SCR is realized by reducing the post-injection oil amount under the condition that the hydrocarbon HC coverage amount exceeds a certain value.
In some embodiments provided by the present application, the first type of coverage prediction model may include a desorption coefficient determination module and a first type of coverage determination module.
On the basis of the foregoing, step S102 of calling a preconfigured first-class coverage prediction model, and processing the hydrocarbon HC covered amount and the post-turbine temperature of the engine to obtain a first-class coverage amount corresponding to the preset time may include:
and step A, calling the desorption coefficient determining module to determine the hydrocarbon HC desorption coefficient corresponding to the temperature after the turbine of the engine.
Wherein, the higher the temperature after the turbine of the engine, the greater the hydrocarbon HC desorption coefficient.
And B, calling the first type coverage amount determining module, and processing the hydrocarbon HC covered amount and the hydrocarbon HC desorption coefficient to obtain the first type coverage amount corresponding to the preset moment.
The product of the hydrocarbon HC covered amount and the hydrocarbon HC desorption coefficient is calculated first to obtain a desorption amount corresponding to the preset time, and then a difference between the hydrocarbon HC covered amount and the desorption amount corresponding to the preset time is calculated to obtain a first type of covered amount corresponding to the preset time.
In some embodiments provided by the present application, the second type of coverage prediction model may include: the device comprises a first conversion coefficient determining module, a second conversion coefficient determining module, a third conversion coefficient determining module and a second class coverage amount determining module.
On the basis of the foregoing, step S103, invoking a preconfigured second-class coverage prediction model, and processing the injection time and the post injection quantity in the post injection information to obtain a second-class coverage corresponding to the preset time may include:
and C, calling the first conversion coefficient determining module to determine a first conversion coefficient corresponding to the oil injection time in the post-injection information.
The first conversion coefficient characterizes the ratio of the post injection quantity to hydrocarbon HC according to the injection time, and the later the injection time is, the larger the first conversion coefficient is.
And D, calling the second conversion coefficient determining module to determine a second conversion coefficient corresponding to the post-injection oil quantity in the post-injection information.
The second conversion coefficient characterizes a proportion of hydrocarbon HC according to the post-injection quantity, and the larger the post-injection quantity is, the larger the second conversion coefficient is.
And E, calling the third conversion coefficient determining module to determine that the engine exhaust flow represented by the post-injection information corresponds to a third conversion coefficient.
The third conversion coefficient is characterized by a conversion coefficient of the post-injection oil quantity which can be covered on the close-coupled SCR and is determined according to the exhaust gas flow, and the larger the exhaust gas flow is, the smaller the third conversion coefficient is, and the exhaust gas flow can be obtained from the automobile electronic control unit ECU. The hydrocarbon HC desorption coefficient, the first conversion coefficient, the second conversion coefficient and the third conversion coefficient are all numbers greater than 0 and less than 1.
And F, calling the second type coverage amount determining module, and calculating the product of the first conversion coefficient, the second conversion coefficient, the third conversion coefficient and the post-injection amount in the post-injection information to obtain the second type coverage amount corresponding to the preset moment.
For example, the hydrocarbon HC coverage prediction value calculation process may be expressed as: m_hc (t+1) =m_hc (t) × (1-a) +m×b×c×d, where t represents the current time, t+1 represents a preset time, m_hc (t) represents a hydrocarbon HC covered amount, m represents a post injection amount corresponding to the injection time, m_hc (t+1) represents the hydrocarbon HC covered amount predicted value, a represents the hydrocarbon HC desorption coefficient determined by the engine turbine post temperature, B represents the first conversion coefficient determined by the injection time, C represents the second conversion coefficient determined by the post injection amount, D represents the post injection amount, and D represents the post injection amount determined by the engineThe values of the third conversion coefficient, the hydrocarbon HC desorption coefficient, the first conversion coefficient, the second conversion coefficient and the third conversion coefficient, which are characterized by the engine exhaust gas flow, can be determined through experiments. In particular, if the post-injection information includes several sets of sub-information, the calculation process of the hydrocarbon HC coverage prediction value may be expressed as: m_hc (t+1) =m_hc (t) × (1-a) +Σ i m i ×B i ×C i ×D i Wherein m is i 、B i 、C i And D i And respectively representing the post-injection quantity, the first conversion coefficient, the second conversion coefficient and the third conversion coefficient corresponding to the ith injection moment.
In some embodiments provided by the present application, before performing step S105, the method may further include:
judging whether the predicted value of the hydrocarbon HC coverage amount is larger than or equal to a preset second hydrocarbon HC coverage amount threshold value or not; if yes, outputting a closing instruction, wherein the closing instruction is used for stopping post-spraying; if not, step S105 is performed.
Wherein the second hydrocarbon HC coverage threshold is greater than the first hydrocarbon HC coverage threshold. The greater the predicted hydrocarbon HC coverage value, the greater the possibility of occurrence of a close-coupled SCR fuse failure, based on which post-injection may be stopped if it is determined that the predicted hydrocarbon HC coverage value is equal to or greater than a preset second hydrocarbon HC coverage threshold.
In some embodiments of the present application, before updating the post-injection amount corresponding to the injection timing in the post-injection information with the new post-injection amount, the method may further include:
and G, calling the second type coverage prediction model, and processing the oil injection time and the new post-injection quantity corresponding to the oil injection time in the post-injection information to obtain the new second type coverage corresponding to the preset time.
And step H, calculating the sum of the first type coverage and the new second type coverage to obtain a new hydrocarbon HC coverage predicted value corresponding to the preset moment.
And step I, judging whether the predicted value of the new hydrocarbon HC coverage is larger than or equal to a preset second hydrocarbon HC coverage threshold, if so, executing the step J, and if not, executing the step K.
Wherein the second hydrocarbon HC coverage threshold is greater than the first hydrocarbon HC coverage threshold.
And step J, outputting a closing instruction, wherein the closing instruction is used for stopping post-spraying.
The fact that the predicted value of the new hydrocarbon HC coverage is greater than or equal to the second hydrocarbon HC coverage threshold is characterized in that even if post-injection is performed according to the reduced post-injection oil quantity, the possibility that the close-coupled SCR has a burning failure at a preset time is still high, so that the post-injection needs to be stopped to avoid the burning failure of the close-coupled SCR.
And step K, updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity.
In some embodiments provided by the present application, the output end of the close-coupled SCR is connected to a diesel oxidation catalyst DOC, and the method may further include:
And step L, calculating a difference value between the temperature of the output end of the close-coupled SCR and the temperature of the rear turbine of the engine to obtain a temperature difference value.
And M, calculating the post-injection quantity corresponding to the injection moment of the second preset multiple for the injection moment in the post-injection information under the condition that the temperature difference value is larger than or equal to a preset temperature difference threshold value.
It should be noted that, the temperature difference value is greater than or equal to the preset temperature difference threshold, and is characterized in that the current close-coupled SCR may perform oxidation reaction of hydrocarbon HC, the close-coupled SCR releases heat, and the post-injection oil quantity needs to be reduced so as to reduce the adhesion condition of hydrocarbon HC on the close-coupled SCR, control the heat release rate of hydrocarbon HC, and avoid burning out the close-coupled SCR.
On the basis of the above, the updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity may include:
and updating the post-injection quantity corresponding to the injection time in the post-injection information by using a smaller value of the post-injection quantity corresponding to the injection time of the first preset multiple and the post-injection quantity corresponding to the injection time of the second preset multiple.
Optionally, the second preset multiple is smaller than the first preset multiple.
On the basis of the above, the updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity may include:
and updating the post-injection quantity corresponding to the oil injection time in the post-injection information by utilizing the post-injection quantity corresponding to the oil injection time of the second preset multiple.
In some embodiments provided by the present application, the method may further comprise:
and under the condition that the temperature of the output end is greater than or equal to a preset temperature threshold value, outputting an alarm signal and a related control signal, wherein the alarm signal is used for representing the fault of the close-coupled SCR, and the related control signal is used for stopping a urea nozzle at the input end of the close-coupled SCR and limiting the torque of the engine.
The condition that the temperature of the output end is greater than or equal to the preset temperature threshold value indicates that the close-coupled SCR is likely to be burnt and lose efficacy, namely the close-coupled SCR fails, and an alarm is needed to prompt timely replacement of the close-coupled SCR.
The description of the oil injection control device of the aftertreatment system provided by the embodiment of the application is given below, and the oil injection control device of the aftertreatment system described below and the oil injection control method of the aftertreatment system described above can be referred to correspondingly.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an oil injection control device of an aftertreatment system according to an embodiment of the present application, where the device may be applied to an engine aftertreatment system, where the engine aftertreatment system includes a close-coupled SCR, and the close-coupled SCR is a first SCR connected after an engine turbine.
As shown in fig. 3, the apparatus may include:
a data obtaining unit 31, configured to obtain a hydrocarbon HC covered amount on the close-coupled SCR at a current time, a turbine post-temperature of the engine, and post-injection information corresponding to the current time, where the post-injection information includes a post-injection time and a post-injection amount corresponding to the injection time, where the injection time is between the current time and a preset time, and the preset time is later than the current time;
the coverage prediction unit 32 is configured to call a preconfigured first-class coverage prediction model, and process the hydrocarbon HC covered amount and the post-turbine temperature of the engine to obtain a first-class coverage corresponding to the preset time; invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time; calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
And the fuel injection control unit 33 is configured to calculate, for a fuel injection time in the post-injection information, a post-fuel injection amount corresponding to the fuel injection time by a first preset multiple to obtain a new post-fuel injection amount when the predicted value of the hydrocarbon HC coverage is greater than or equal to a preset first hydrocarbon HC coverage threshold, where the first preset multiple is less than 1, and update the post-fuel injection amount corresponding to the fuel injection time in the post-injection information by using the new post-fuel injection amount.
In some embodiments provided by the present application, the first type of coverage prediction model may include a desorption coefficient determination module and a first type of coverage determination module.
On the basis of the above, the process of calling the preconfigured first-class coverage prediction model by the coverage prediction unit 32 to process the hydrocarbon HC covered amount and the post-turbine temperature of the engine to obtain the first-class coverage amount corresponding to the preset time may include:
invoking the desorption coefficient determining module to determine a hydrocarbon HC desorption coefficient corresponding to the temperature after the turbine of the engine;
and calling the first type coverage amount determining module to process the hydrocarbon HC covered amount and the hydrocarbon HC desorption coefficient to obtain the first type coverage amount corresponding to the preset time.
In some embodiments provided by the present application, the second type of coverage prediction model may include: the device comprises a first conversion coefficient determining module, a second conversion coefficient determining module, a third conversion coefficient determining module and a second class coverage amount determining module.
On the basis of the above, the process of the coverage prediction unit 32 calling a preconfigured second-class coverage prediction model, and processing the injection time and the post injection quantity in the post injection information to obtain a second-class coverage corresponding to the preset time may include:
invoking the first conversion coefficient determining module to determine a first conversion coefficient corresponding to the oil injection time in the post-injection information;
invoking the second conversion coefficient determining module to determine a second conversion coefficient corresponding to the post-injection quantity in the post-injection information;
invoking the third conversion coefficient determination module to determine that the engine exhaust flow characterized by the post-injection information corresponds to a third conversion coefficient;
and calling the second type coverage amount determining module, and calculating the product of the first conversion coefficient, the second conversion coefficient, the third conversion coefficient and the post-injection amount in the post-injection information to obtain the second type coverage amount corresponding to the preset moment.
In some embodiments of the present disclosure, the control process of the fuel injection control unit 33 when the predicted HC hydrocarbon coverage value is greater than or equal to a preset first HC hydrocarbon coverage threshold may further include:
before updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity, invoking the second type coverage quantity prediction model, and processing the injection time in the post-injection information and the new post-injection quantity corresponding to the injection time to obtain a new second type coverage quantity corresponding to the preset time;
calculating the sum of the first type coverage and the new second type coverage to obtain a new hydrocarbon HC coverage predicted value corresponding to the preset moment;
judging whether the new hydrocarbon HC coverage amount predicted value is larger than or equal to a preset second hydrocarbon HC coverage amount threshold value or not, wherein the second hydrocarbon HC coverage amount threshold value is larger than the first hydrocarbon HC coverage amount threshold value;
if yes, outputting a closing instruction, wherein the closing instruction is used for stopping post-spraying;
if not, updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity.
In some embodiments provided by the present application, the output end of the close-coupled SCR is connected to a diesel oxidation catalyst DOC, and the apparatus may further include: the temperature monitoring unit is used for calculating the difference between the temperature of the output end of the close-coupled SCR and the temperature of the rear turbine of the engine to obtain a temperature difference value;
the injection control unit 33 may also be configured to: under the condition that the temperature difference value is larger than or equal to a preset temperature difference threshold value, calculating a post-injection quantity corresponding to the injection moment of a second preset multiple for the injection moment in the post-injection information; and updating the post-injection quantity corresponding to the injection time in the post-injection information by using a smaller value of the post-injection quantity corresponding to the injection time of the first preset multiple and the post-injection quantity corresponding to the injection time of the second preset multiple.
In some embodiments provided by the present application, the fuel injection control unit 33 may further be configured to:
and under the condition that the temperature of the output end is greater than or equal to a preset temperature threshold value, outputting an alarm signal and a related control signal, wherein the alarm signal is used for representing the fault of the close-coupled SCR, and the related control signal is used for stopping a urea nozzle at the input end of the close-coupled SCR and limiting the torque of the engine.
The oil injection control device of the aftertreatment system provided by the embodiment of the application can be applied to oil injection control equipment of the aftertreatment system, such as a terminal: computer, etc., the apparatus may be applied to an engine aftertreatment system that includes a close-coupled SCR, the close-coupled SCR being the first SCR to connect after an engine turbine. Alternatively, fig. 4 shows a block diagram of a hardware structure of an oil injection control apparatus of an aftertreatment system, and referring to fig. 4, the hardware structure of the oil injection control apparatus of the aftertreatment system may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;
in the embodiment of the application, the number of the processor 1, the communication interface 2, the memory 3 and the communication bus 4 is at least one, and the processor 1, the communication interface 2 and the memory 3 complete the communication with each other through the communication bus 4;
processor 1 may be a central processing unit CPU, or a specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present application, etc.;
the memory 3 may comprise a high-speed RAM memory, and may further comprise a non-volatile memory (non-volatile memory) or the like, such as at least one magnetic disk memory;
Wherein the memory stores a program, the processor is operable to invoke the program stored in the memory, the program operable to:
acquiring the hydrocarbon HC covered quantity, the engine turbine rear temperature and the rear injection information corresponding to the current moment on the tightly coupled SCR at the current moment, wherein the rear injection information comprises the post-injection oil injection moment and the post-injection oil quantity corresponding to the oil injection moment, the oil injection moment is between the current moment and a preset moment, and the preset moment is later than the current moment;
invoking a preset first type coverage prediction model, and processing the hydrocarbon HC covered quantity and the post-turbine temperature of the engine to obtain a first type coverage quantity corresponding to the preset moment;
invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time;
calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
and under the condition that the predicted value of the hydrocarbon HC coverage is larger than or equal to a preset first hydrocarbon HC coverage threshold, calculating the post-injection quantity corresponding to the injection moment of a first preset multiple for the injection moment in the post-injection information to obtain a new post-injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-injection quantity corresponding to the injection moment in the post-injection information by utilizing the new post-injection quantity.
Alternatively, the refinement function and the extension function of the program may be described with reference to the above.
The embodiment of the present application also provides a storage medium storing a program adapted to be executed by a processor, the program being configured to:
for a close-coupled SCR in a post-processing system, acquiring hydrocarbon HC covered quantity, engine turbine post-temperature and post-injection information corresponding to the current moment, wherein the post-injection information comprises post-injection oil injection moment and post-injection oil quantity corresponding to the oil injection moment, the oil injection moment is between the current moment and preset moment, and the preset moment is later than the current moment;
invoking a preset first type coverage prediction model, and processing the hydrocarbon HC covered quantity and the post-turbine temperature of the engine to obtain a first type coverage quantity corresponding to the preset moment;
invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time;
calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
And under the condition that the predicted value of the hydrocarbon HC coverage is larger than or equal to a preset first hydrocarbon HC coverage threshold, calculating the post-injection quantity corresponding to the injection moment of a first preset multiple for the injection moment in the post-injection information to obtain a new post-injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-injection quantity corresponding to the injection moment in the post-injection information by utilizing the new post-injection quantity.
Alternatively, the refinement function and the extension function of the program may be described with reference to the above.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and may be combined according to needs, and the same similar parts may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of fuel injection control for an aftertreatment system, the method being applied to an engine aftertreatment system, the engine aftertreatment system including a close-coupled SCR, the close-coupled SCR being a first SCR connected after a turbine of an engine, the method comprising:
acquiring the hydrocarbon HC covered quantity, the engine turbine rear temperature and the rear injection information corresponding to the current moment on the tightly coupled SCR at the current moment, wherein the rear injection information comprises the post-injection oil injection moment and the post-injection oil quantity corresponding to the oil injection moment, the oil injection moment is between the current moment and a preset moment, and the preset moment is later than the current moment;
Invoking a preset first type coverage prediction model, and processing the hydrocarbon HC covered quantity and the post-turbine temperature of the engine to obtain a first type coverage quantity corresponding to the preset moment;
invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time;
calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
and under the condition that the predicted value of the hydrocarbon HC coverage is larger than or equal to a preset first hydrocarbon HC coverage threshold, calculating the post-injection quantity corresponding to the injection moment of a first preset multiple for the injection moment in the post-injection information to obtain a new post-injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-injection quantity corresponding to the injection moment in the post-injection information by utilizing the new post-injection quantity.
2. The method of claim 1, wherein the first type of coverage prediction model comprises a desorption coefficient determination module and a first type of coverage determination module;
The method for obtaining the first-class coverage corresponding to the preset moment comprises the following steps of:
invoking the desorption coefficient determining module to determine a hydrocarbon HC desorption coefficient corresponding to the temperature after the turbine of the engine;
and calling the first type coverage amount determining module to process the hydrocarbon HC covered amount and the hydrocarbon HC desorption coefficient to obtain the first type coverage amount corresponding to the preset time.
3. The method of claim 2, wherein the second type of coverage prediction model comprises: the device comprises a first conversion coefficient determining module, a second conversion coefficient determining module, a third conversion coefficient determining module and a second class coverage amount determining module;
the method for obtaining the second type coverage corresponding to the preset time comprises the steps of:
invoking the first conversion coefficient determining module to determine a first conversion coefficient corresponding to the oil injection time in the post-injection information;
Invoking the second conversion coefficient determining module to determine a second conversion coefficient corresponding to the post-injection quantity in the post-injection information;
invoking the third conversion coefficient determination module to determine that the engine exhaust flow characterized by the post-injection information corresponds to a third conversion coefficient;
and calling the second type coverage amount determining module, and calculating the product of the first conversion coefficient, the second conversion coefficient, the third conversion coefficient and the post-injection amount in the post-injection information to obtain the second type coverage amount corresponding to the preset moment.
4. A method according to any one of claims 1-3, characterized in that before updating the post-injection amount corresponding to the injection timing in the post-injection information with the new post-injection amount, the method further comprises:
invoking the second type coverage amount prediction model, and processing the post-injection information at the injection time and the new post-injection amount corresponding to the injection time to obtain a new second type coverage amount corresponding to the preset time;
calculating the sum of the first type coverage and the new second type coverage to obtain a new hydrocarbon HC coverage predicted value corresponding to the preset moment;
Judging whether the new hydrocarbon HC coverage amount predicted value is larger than or equal to a preset second hydrocarbon HC coverage amount threshold value or not, wherein the second hydrocarbon HC coverage amount threshold value is larger than the first hydrocarbon HC coverage amount threshold value;
if yes, outputting a closing instruction, wherein the closing instruction is used for stopping post-spraying;
if not, the step of updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity is executed.
5. A method according to any one of claims 1-3, characterized in that the output of the close-coupled SCR is connected to a diesel oxidation catalyst DOC, the method further comprising:
calculating the difference between the temperature of the output end of the close-coupled SCR and the temperature of the rear turbine of the engine to obtain a temperature difference value;
under the condition that the temperature difference value is larger than or equal to a preset temperature difference threshold value, calculating a post-injection quantity corresponding to the injection moment of a second preset multiple for the injection moment in the post-injection information;
the updating the post-injection quantity corresponding to the injection time in the post-injection information by using the new post-injection quantity comprises the following steps:
and updating the post-injection quantity corresponding to the injection time in the post-injection information by using a smaller value of the post-injection quantity corresponding to the injection time of the first preset multiple and the post-injection quantity corresponding to the injection time of the second preset multiple.
6. The method of claim 5, further comprising:
and under the condition that the temperature of the output end is greater than or equal to a preset temperature threshold value, outputting an alarm signal and a related control signal, wherein the alarm signal is used for representing the fault of the close-coupled SCR, and the related control signal is used for stopping a urea nozzle at the input end of the close-coupled SCR and limiting the torque of the engine.
7. An oil injection control device for an aftertreatment system, the device being adapted to an engine aftertreatment system, the engine aftertreatment system comprising a close-coupled SCR, the close-coupled SCR being a first SCR connected after an engine turbine, the device comprising:
the data acquisition unit is used for acquiring the hydrocarbon HC covered quantity, the engine turbine rear temperature and the rear injection information corresponding to the current moment, wherein the rear injection information comprises the rear injection oil injection moment and the rear injection oil quantity corresponding to the oil injection moment, the oil injection moment is between the current moment and the preset moment, and the preset moment is later than the current moment;
the coverage prediction unit is used for calling a preconfigured first-class coverage prediction model, and processing the hydrocarbon HC covered quantity and the post-turbine temperature of the engine to obtain a first-class coverage corresponding to the preset moment; invoking a preconfigured second-class coverage prediction model, and processing the oil injection time and the post-injection quantity in the post-injection information to obtain a second-class coverage corresponding to the preset time; calculating the sum of the first type of coverage and the second type of coverage to obtain a hydrocarbon HC coverage predicted value corresponding to the preset moment;
And the fuel injection control unit is used for calculating the post-fuel injection quantity corresponding to the fuel injection moment of a first preset multiple for the fuel injection moment in the post-fuel injection information under the condition that the predicted value of the hydrocarbon HC coverage quantity is larger than or equal to a preset first hydrocarbon HC coverage quantity threshold value to obtain a new post-fuel injection quantity, wherein the first preset multiple is smaller than 1, and updating the post-fuel injection quantity corresponding to the fuel injection moment in the post-fuel injection information by utilizing the new post-fuel injection quantity.
8. The aftertreatment system of claim 7, wherein the output of the close-coupled SCR is connected to a diesel oxidation catalyst DOC, the device further comprising: the temperature monitoring unit is used for calculating the difference between the temperature of the output end of the close-coupled SCR and the temperature of the rear turbine of the engine to obtain a temperature difference value;
the oil injection control unit is further used for calculating the post-oil injection quantity corresponding to the oil injection moment of a second preset multiple for the oil injection moment in the post-oil injection information under the condition that the temperature difference value is larger than or equal to a preset temperature difference threshold value; and updating the post-injection quantity corresponding to the injection time in the post-injection information by using a smaller value of the post-injection quantity corresponding to the injection time of the first preset multiple and the post-injection quantity corresponding to the injection time of the second preset multiple.
9. An oil injection control device for an aftertreatment system, the device being adapted to an engine aftertreatment system, the engine aftertreatment system including a close-coupled SCR, the close-coupled SCR being a first SCR connected after a turbine of an engine, the device comprising: a memory and a processor;
the memory is used for storing programs;
the processor is configured to execute the program to implement the respective steps of the fuel injection control method of the aftertreatment system according to any one of claims 1-6.
10. A storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the fuel injection control method of the aftertreatment system of any one of claims 1-6.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101617109A (en) * | 2007-02-21 | 2009-12-30 | 沃尔沃拉斯特瓦格纳公司 | Exhaust after treatment system (EATS) |
| JP2018021471A (en) * | 2016-08-02 | 2018-02-08 | マツダ株式会社 | Exhaust emission control device for engine |
| EP1925799B1 (en) * | 2006-11-27 | 2020-08-19 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification system for internal combustion engine |
| US20210254533A1 (en) * | 2020-02-17 | 2021-08-19 | Hyundai Motor Company | Post injection control method during exhaust brake operation |
| CN115111079A (en) * | 2021-12-02 | 2022-09-27 | 长城汽车股份有限公司 | Sulfur removal method and device for diesel vehicle, electronic equipment and vehicle |
| WO2022236979A1 (en) * | 2021-05-14 | 2022-11-17 | 无锡威孚力达催化净化器有限责任公司 | Control method for two-stage post-treatment system, apparatus terminal, and readable storage medium |
| CN116146314A (en) * | 2023-03-22 | 2023-05-23 | 潍柴动力股份有限公司 | Engine aftertreatment temperature control method and device, electronic equipment and medium |
| CN116741304A (en) * | 2023-06-15 | 2023-09-12 | 哈尔滨工业大学（威海） | Diesel engine original exhaust nitrogen oxide prediction method based on Internet of vehicles big data |
-
2023
- 2023-09-28 CN CN202311272410.7A patent/CN116988884B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1925799B1 (en) * | 2006-11-27 | 2020-08-19 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification system for internal combustion engine |
| CN101617109A (en) * | 2007-02-21 | 2009-12-30 | 沃尔沃拉斯特瓦格纳公司 | Exhaust after treatment system (EATS) |
| JP2018021471A (en) * | 2016-08-02 | 2018-02-08 | マツダ株式会社 | Exhaust emission control device for engine |
| US20210254533A1 (en) * | 2020-02-17 | 2021-08-19 | Hyundai Motor Company | Post injection control method during exhaust brake operation |
| WO2022236979A1 (en) * | 2021-05-14 | 2022-11-17 | 无锡威孚力达催化净化器有限责任公司 | Control method for two-stage post-treatment system, apparatus terminal, and readable storage medium |
| CN115111079A (en) * | 2021-12-02 | 2022-09-27 | 长城汽车股份有限公司 | Sulfur removal method and device for diesel vehicle, electronic equipment and vehicle |
| CN116146314A (en) * | 2023-03-22 | 2023-05-23 | 潍柴动力股份有限公司 | Engine aftertreatment temperature control method and device, electronic equipment and medium |
| CN116741304A (en) * | 2023-06-15 | 2023-09-12 | 哈尔滨工业大学（威海） | Diesel engine original exhaust nitrogen oxide prediction method based on Internet of vehicles big data |
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