CN114810384A - Method and apparatus for controlling aftertreatment inlet temperature - Google Patents
Method and apparatus for controlling aftertreatment inlet temperature Download PDFInfo
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- CN114810384A CN114810384A CN202210505430.3A CN202210505430A CN114810384A CN 114810384 A CN114810384 A CN 114810384A CN 202210505430 A CN202210505430 A CN 202210505430A CN 114810384 A CN114810384 A CN 114810384A
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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
- F02D41/02—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
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine
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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
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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
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1002—Output torque
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The application provides a method and a device for controlling the inlet temperature of aftertreatment. The control method comprises the following steps: acquiring the current rotating speed, the current torque and the target torque of the engine; determining target parameters of the aftertreatment heating system based on the current speed, the current torque, and the target torque, the target parameters including at least one of: target post-injection quantity of the engine and target opening angle of an exhaust valve; the target parameter is adjusted so that the temperature of the aftertreatment inlet reaches the target temperature. The method comprises the steps of determining a target post-injection oil quantity and/or a target opening angle required when the post-treatment inlet temperature reaches a required temperature, increasing the current post-injection oil quantity of an engine to the target post-injection oil quantity and/or increasing the current opening angle of an exhaust valve to the target opening angle to enable the current temperature of the post-treatment inlet to be increased to the target temperature, and further solving the problem that the accuracy of increasing the post-treatment inlet temperature to the required temperature in the prior art is low.
Description
Technical Field
The application relates to the technical field of engines, in particular to a method and a device for controlling aftertreatment inlet temperature, a computer readable storage medium and a processor.
Background
The aftertreatment system of a turbocharged diesel engine is operated in a specific temperature interval, and the conversion efficiency of the aftertreatment is increased by the temperature increase of the subsequent treatment inlet gas, as shown in fig. 1. When the gas temperature is too low, the post-treatment efficiency is low, and the indexes of the discharged pollutants such as nitrogen oxides, carbon particles and the like at the outlet of the post-treatment can not meet the requirements of discharge regulations. In order to meet the emission regulation requirements, the aftertreatment conversion efficiency needs to be higher than a certain limit, namely the exhaust temperature needs to be higher than a certain limit. Typically this limit is above 270 ℃.
The existing diesel engine oil injection process usually adopts a multi-stage injection strategy, namely, fuel oil is injected into an air cylinder for multiple times at intervals in one oil injection cycle. The multi-stage injection is generally divided into three stages of pre-injection, main injection and post-injection according to the injection timing, as shown in fig. 2. The pre-spraying is used for raising the temperature in the cylinder and accelerating the ignition of fuel oil; the main injection fuel oil is used for doing work; post-injection fuel is typically used to raise the exhaust temperature of the engine. Because the work capacity of the post-injection fuel oil is weak, the fuel consumption of the diesel engine is deteriorated due to the increase of the post-injection fuel oil, and therefore, the post-injection fuel oil quantity is reduced as much as possible.
When the diesel engine runs at low load, the fuel flow is small and the air quantity is excessive, so that the exhaust temperature of the engine is low, and after low-temperature exhaust passes through the turbocharger to do work, the internal energy of the exhaust can be converted into turbine mechanical work, so that the exhaust temperature at the outlet of the turbine, namely the inlet of the aftertreatment system is further reduced compared with the exhaust temperature at the outlet of the cylinder. The aftertreatment inlet temperature may be below 270 ℃ and emissions may not meet regulatory requirements. To increase aftertreatment inlet temperature, existing diesel engines typically increase exhaust temperature by increasing the amount of post-injected fuel, a mode known as the heating mode of the diesel engine, which increases exhaust temperature at the expense of fuel consumption. This is because the increased amount of post injection generates heat that is largely converted to turbine work and absorbed by the increased air, and only a small amount of heat is used to heat the aftertreatment inlet exhaust temperature, which has limited effect on the aftertreatment inlet temperature lift and significantly increases diesel fuel consumption. In the prior art, a branch is added from an exhaust port to an aftertreatment inlet, and an exhaust valve is arranged on the branch to control part of high-temperature exhaust of an engine to directly enter the aftertreatment inlet without passing through a turbine so as to improve the temperature of the aftertreatment inlet. However, in the prior art, the post-injection oil quantity and/or the opening angle are adjusted by directly obtaining the post-treatment inlet temperature, and the temperature cannot be accurately increased to the required temperature.
Therefore, a method for accurately raising the post-treatment inlet temperature to the required temperature is needed.
The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
Disclosure of Invention
The present application mainly aims to provide a method and an apparatus for controlling an aftertreatment inlet temperature, a computer-readable storage medium, and a processor, so as to solve the problem in the prior art that the accuracy of increasing the aftertreatment inlet temperature to a required temperature is low.
According to an aspect of an embodiment of the present invention, there is provided a control method of an aftertreatment inlet temperature, applied to an aftertreatment inlet of an aftertreatment heating system, the aftertreatment heating system including an engine, a turbine, and an exhaust valve, the engine and the turbine being connected by an exhaust line, an exhaust inlet of the engine being connected to an exhaust outlet of the turbine by a bypass line, an exhaust outlet of the turbine being the aftertreatment inlet, the exhaust valve being disposed on the bypass line, the control method including: acquiring the current rotating speed, the current torque and the target torque of the engine; determining a target parameter of the aftertreatment heating system based at least on the current speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection quantity of the engine, a target opening angle of the exhaust valve; increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, the current parameter including at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
Optionally, obtaining the current rotation speed, the current torque and the target torque of the engine comprises: acquiring the current rotating speed and the target torque of the engine; calculating the current opening angle of the exhaust valve and the current post-injection oil quantity of the engine according to the current rotating speed and the target torque; and determining the current torque according to the current opening angle and the current post-injection oil quantity.
Optionally, the target parameter includes a target post-injection amount of the engine, and determining the target parameter of the aftertreatment heating system according to the current rotation speed, the current torque, and the target torque includes: determining whether a difference between the current torque and the target torque is within a first predetermined range; determining the current post-injection oil amount as the target post-injection oil amount under the condition that the difference value is within the first preset range; and under the condition that the difference value is not in the first preset range, adjusting the current post-injection oil quantity to enable the difference value to be in the first preset range and the adjusted current post-injection oil quantity to be the target post-injection oil quantity.
Optionally, in a case that the difference is not within the first predetermined range, adjusting the current post-injection oil amount includes: a first calculation step of calculating a post-injection amount when the current torque reaches the target torque at least according to the current torque and the target torque to obtain a first post-injection amount of the engine; a first adjusting step of adjusting the current post-injection oil amount to the first post-injection oil amount; and repeating the first calculating step and the first adjusting step at least once in sequence until the difference value of the current torque and the target torque is within the first preset range.
Optionally, calculating a first post-injection amount of the engine based on at least the current torque and the target torque comprises: acquiring a first difference value, wherein the first difference value is a torque change value when the post-injection oil quantity is increased by a first preset value; calculating the ratio of the first difference to the first preset value to obtain a first slope; and calculating the sum of a first target ratio and the current post-injection oil quantity to obtain the first post-injection oil quantity, wherein the first target ratio is the ratio of the difference value of the target torque and the current torque and the first slope.
Optionally, the target parameter includes a target opening angle of the exhaust valve, and the target parameter of the aftertreatment heating system is determined according to the current rotation speed, the current torque, and the target torque, and further includes: obtaining a current temperature of the post-treatment inlet; determining whether a difference between the current temperature and the target temperature is within a second predetermined range; determining the current opening angle as the target opening angle under the condition that the difference value is in the second preset range; and under the condition that the difference value is not in the second preset range, adjusting the current opening angle to enable the difference value to be in the second preset range and the adjusted current opening angle to be the target opening angle.
Optionally, in a case that the difference value is not within the second predetermined range, adjusting the current opening angle includes: a second calculation step of calculating the opening angle of the exhaust valve of which the current temperature reaches the target temperature at least according to the current temperature and the target temperature to obtain a first opening angle of the exhaust valve; a second adjustment step of adjusting the current opening angle to the first opening angle; and repeating the second calculating step and the second adjusting step at least once in sequence until the difference value between the current temperature and the target temperature is within the second preset range.
Optionally, calculating a first opening angle of the exhaust valve according to at least the current temperature and the target temperature includes: acquiring a second difference value, wherein the second difference value is a temperature change value of the aftertreatment inlet when the opening angle of the exhaust valve is increased by a second preset value and the current torque of the engine reaches the target torque; calculating the ratio of the second difference to the second preset value to obtain a second slope; and calculating a second target ratio which is the ratio of the difference between the target temperature and the current temperature and the second slope and the sum of the current temperatures to obtain the first opening angle.
According to another aspect of the embodiments of the present invention, there is also provided a control device of an aftertreatment inlet temperature, applied to an aftertreatment inlet of an aftertreatment heating system, where the aftertreatment heating system includes an engine, a turbine, and an exhaust valve, the engine and the turbine are connected through an exhaust pipeline, an exhaust inlet of the engine is connected to an exhaust outlet of the turbine through a bypass pipeline, an exhaust outlet of the turbine is the aftertreatment inlet, the exhaust valve is disposed on the bypass pipeline, the control device includes an obtaining unit, a determining unit, and an adjusting unit, where the obtaining unit is configured to obtain a current rotation speed, a current torque, and a target torque of the engine; the determination unit is used for determining target parameters of the after-treatment heating system according to the current rotating speed, the current torque and the target torque, and the target parameters comprise at least one of the following parameters: a target post-injection quantity of the engine, a target opening angle of the exhaust valve; the adjustment unit is used for adjusting the target parameter so that the temperature of the post-treatment inlet reaches a target temperature.
According to another aspect of embodiments of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program performs any one of the methods.
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 to perform any one of the methods.
In an embodiment of the present invention, the method for controlling the temperature of the aftertreatment inlet is applied to an aftertreatment inlet of an aftertreatment heating system, the aftertreatment heating system includes an engine, a turbine and an exhaust valve, the engine and the turbine are connected through an exhaust pipeline, an exhaust inlet of the engine is connected to an exhaust outlet of the turbine through a bypass pipeline, an exhaust outlet of the turbine is the aftertreatment inlet, and the exhaust valve is disposed on the bypass pipeline, and the method includes: acquiring the current rotating speed, the current torque and the target torque of the engine; determining a target parameter of the aftertreatment heating system based on the current speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection quantity of the engine, a target opening angle of the exhaust valve; adjusting the target parameter such that the temperature of the aftertreatment inlet reaches a target temperature. The exhaust temperature of the engine can be raised by increasing the post-injection quantity, so that the temperature of the post-treatment inlet is raised, the temperature of part of high-temperature exhaust of the engine can be directly introduced into the post-treatment inlet without passing through the turbine by increasing the angle of the exhaust valve, so that the temperature of the post-treatment inlet is raised, the method comprises the steps of determining the target post-injection oil quantity and/or the target open angle required when the post-treatment inlet temperature reaches the required temperature, increasing the current post-injection oil quantity of the engine to the target post-injection oil quantity and/or increasing the current open angle of the exhaust valve to the target open angle to increase the current temperature of the post-treatment inlet to the target temperature, avoiding the problem that the post-treatment inlet temperature cannot be accurately increased to the required temperature due to the fact that the post-injection oil quantity and/or the target open angle are directly adjusted by the post-treatment inlet temperature in the prior art, and then solved among the prior art and improved the problem that the accuracy of aftertreatment entry temperature to demand temperature is low.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 shows a graph of aftertreatment conversion efficiency versus aftertreatment inlet temperature according to the prior art;
FIG. 2 shows a schematic diagram of multi-stage injection for a diesel engine according to the prior art;
FIG. 3 shows a schematic view of an aftertreatment heating system according to an embodiment of the application;
FIG. 4 shows a flow chart of a method of controlling aftertreatment inlet temperature according to an embodiment of the application;
FIG. 5 illustrates a logic diagram for a control method of aftertreatment inlet temperature according to an embodiment of the application;
FIG. 6 shows a post-injection quantity calculation schematic according to an embodiment of the present application;
FIG. 7 shows a schematic of an exhaust valve angle calculation according to an embodiment of the present application;
FIG. 8 shows a schematic diagram of a control arrangement for aftertreatment inlet temperature according to an embodiment of the application.
Wherein the figures include the following reference numerals:
101. an engine; 102. a turbine; 103. an exhaust valve; 104. an exhaust line; 105. a bypass line; 106. a stepper motor.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application 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 should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. 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.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As mentioned in the background of the invention, in order to solve the above-mentioned problems, the prior art has low accuracy in increasing the post-treatment inlet temperature to the required temperature, and in an exemplary embodiment of the present application, a method, an apparatus, a computer-readable storage medium, and a processor for controlling the post-treatment inlet temperature are provided.
According to an embodiment of the present application, a method for controlling an aftertreatment inlet temperature is provided, which is applied to an aftertreatment inlet of an aftertreatment heating system, as shown in fig. 3, the aftertreatment heating system includes an engine 101, a turbine 102, and an exhaust valve 103, the engine 101 and the turbine 102 are connected by an exhaust pipe 104, the exhaust inlet of the engine 101 is connected to an exhaust outlet of the turbine 102 by a bypass pipe 105, the exhaust outlet of the turbine 102 is the aftertreatment inlet, and the exhaust valve 103 is disposed on the bypass pipe 105.
FIG. 4 is a flow chart of a method of controlling aftertreatment inlet temperature according to an embodiment of the application. As shown in fig. 4, the method comprises the steps of:
step S101, obtaining the current rotating speed, the current torque and the target torque of the engine;
step S102, determining a target parameter of the aftertreatment heating system according to at least the current rotation speed, the current torque, and the target torque, where the target parameter includes at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve;
step S103, increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, where the current parameter includes at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
The control method of the aftertreatment inlet temperature includes the steps of firstly, obtaining the current rotating speed, the current torque and the target torque of the engine; then, determining a target parameter of the aftertreatment heating system based at least on the current speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve; finally, increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, the current parameter including at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve. The exhaust temperature of the engine can be raised by increasing the post-injection quantity, so that the temperature of the post-treatment inlet is raised, the temperature of part of high-temperature exhaust of the engine can be directly introduced into the post-treatment inlet without passing through the turbine by increasing the angle of the exhaust valve, so that the temperature of the post-treatment inlet is raised, the method comprises the steps of determining the target post-injection oil quantity and/or the target open angle required when the post-treatment inlet temperature reaches the required temperature, increasing the current post-injection oil quantity of the engine to the target post-injection oil quantity and/or increasing the current open angle of the exhaust valve to the target open angle to increase the current temperature of the post-treatment inlet to the target temperature, avoiding the problem that the post-treatment inlet temperature cannot be accurately increased to the required temperature due to the fact that the post-injection oil quantity and/or the target open angle are directly adjusted by the post-treatment inlet temperature in the prior art, and then solved among the prior art and improved the problem that the accuracy of aftertreatment entry temperature to demand temperature is low.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
In order to quickly and accurately obtain the current torque of the aftertreatment heating system including the bypass path, in one embodiment of the present application, obtaining the current speed, the current torque, and the target torque of the engine includes: acquiring the current rotating speed and the target torque of the engine; calculating the current opening angle of the exhaust valve and the current post-injection amount of the engine based on the current rotational speed and the target torque; and determining the current torque according to the current opening angle and the current post-injection oil quantity.
Specifically, the current rotational speed of the engine may be acquired from an engine Electronic Control Unit (ECU). In addition, a semi-empirical model may be established, as shown in fig. 5, by using test data of similar models, a mathematical relationship among the engine speed, the torque, the post-treatment inlet temperature, the post-injection oil amount, and the exhaust gas flow rate is established, and then a bypass pipeline flow rate model is added, that is, the semi-empirical model is obtained. The current opening angle and the current post-injection amount of the exhaust valve can be calculated by substituting the current rotating speed, the target temperature and the target torque into a semi-empirical model, and the current torque can be determined by transmitting the values of the current opening angle and the current post-injection amount to an ECU.
In another embodiment of the present application, the determining the target parameter of the aftertreatment heating system according to the current rotation speed, the current torque, and the target torque includes: as shown in fig. 5, determining whether the difference between the current torque and the target torque is within a first predetermined range; determining the current post-injection amount as the target post-injection amount when the difference is within the first predetermined range; and adjusting the current post-injection oil amount so that the difference is within the first predetermined range and the adjusted current post-injection oil amount is the target post-injection oil amount when the difference is not within the first predetermined range. In this embodiment, the post-injection amount is increased so that the current torque reaches the target torque, and it is possible to effectively prevent the fuel consumption of the diesel engine from being deteriorated due to an excessive increase in the post-injection amount.
In order to accurately calculate the post-injection amount required when the current torque reaches the target torque, in another embodiment of the present application, in a case where the difference is not within the first predetermined range, the adjusting the current post-injection amount includes: a first calculation step of calculating a post-injection amount when the current torque reaches the target torque, based on at least the current torque and the target torque, to obtain a first post-injection amount of the engine; a first adjusting step of adjusting the current post-injection amount to the first post-injection amount; and repeating the first calculating step and the first adjusting step at least once until the difference between the current torque and the target torque is within the first preset range.
In practical applications, the first predetermined range may be-5 to 5 Nm.
In still another embodiment of the present application, the calculating a first post injection amount of the engine based on at least the current torque and the target torque includes: acquiring a first difference value, wherein the first difference value is a torque change value when the post-injection oil quantity is increased by a first preset value; calculating the ratio of the first difference to the first preset value to obtain a first slope; and calculating the sum of a first target ratio and the current post-injection oil quantity to obtain the first post-injection oil quantity, wherein the first target ratio is the ratio of the difference value of the target torque and the current torque and the first slope. And calculating the first post-injection oil amount through the first slope, so that the result of calculating the required post-injection oil amount when the current torque reaches the target torque is quicker and more accurate.
Specifically, fig. 6 is a schematic diagram of calculating the post-injection amount, and the first predetermined value may be 2% to 5% of the current oil amount, and is denoted as Δ g f The torque variation value when the post-injection amount increases by a first predetermined value, that is, the first difference value is Δ T q The current post-injection quantity is g f,1 The target torque is T q,0 The current torque is T q,1 The above first slope
The first post-injection quantity is
In another embodiment of the present application, the target parameter includes a target opening angle of the exhaust valve, and the target parameter of the aftertreatment heating system is determined according to the current rotation speed, the current torque, and the target torque, and the method further includes: as shown in fig. 5, the current temperature of the aftertreatment inlet is obtained; determining whether a difference between the current temperature and the target temperature is within a second predetermined range; determining the current opening angle as the target opening angle when the difference value is within the second predetermined range; and when the difference is not within the second predetermined range, adjusting the current opening angle so that the difference is within the second predetermined range and the adjusted current opening angle is the target opening angle. In this embodiment, the opening angle is adjusted until the temperature of the aftertreatment inlet reaches the target temperature, so as to prevent excessive high-temperature exhaust at the aftertreatment inlet due to an excessive opening angle and avoid the problem of excessive temperature at the aftertreatment inlet.
In practical applications, the target temperature is the minimum required temperature T of the aftertreatment inlet min The range of values is between 250 ℃ and 300 ℃ and can be changed according to different post-treatment systems.
In one embodiment of the present application, as shown in fig. 3, the opening angle of the exhaust valve 103 is controlled by a stepping motor 106, and the control accuracy of the stepping motor is ± 0.5 °. The exhaust valve angle can control the effective flow area of exhaust gas and further control the flow rate of the exhaust gas, and the angle range of the exhaust valve angle is 0-90 degrees, wherein 0 degree represents that the valve is in a fully closed state, 90 degrees represents that the valve is in a maximum opening state, and the effective flow area of the valve is the same as the cross section area of the exhaust pipe at the moment. The post-treatment inlet temperatures at different exhaust valve opening angles can be calculated by a continuity equation and an energy conservation equation.
In order to accurately calculate the exhaust valve angle required when the current temperature reaches the target temperature, in another embodiment of the present application, in a case where the difference is not within the second predetermined range, the adjusting the current opening angle includes: a second calculation step of calculating an opening angle of the exhaust valve at which the current temperature reaches the target temperature, based on at least the current temperature and the target temperature, to obtain a first opening angle of the exhaust valve; a second adjustment step of adjusting the current opening angle to the first opening angle; and repeating the second calculating step and the second adjusting step at least once until the difference between the current temperature and the target temperature is within the second predetermined range.
In practice, the second predetermined range may be 0 ℃ to 3 ℃.
In another embodiment of the present application, calculating a first opening angle of the exhaust valve at least according to the current temperature and the target temperature includes: acquiring a second difference value, which is a temperature change value of the aftertreatment inlet when the opening angle of the exhaust valve is increased by a second predetermined value and the current torque of the engine reaches the target torque; calculating the ratio of the second difference to the second preset value to obtain a second slope; and calculating the sum of a second target ratio and the current temperature to obtain the first opening angle, wherein the second target ratio is the ratio of the difference between the target temperature and the current temperature and the second slope. The first opening angle is calculated through the second slope, so that the calculation result of the exhaust valve opening angle required when the current temperature reaches the target temperature is faster and more accurate.
Specifically, fig. 7 is a schematic diagram illustrating calculation of an exhaust valve angle, where the second predetermined value may be 0 to 3 ℃, Δ W, a temperature change value at the aftertreatment inlet when the engine torque reaches the target torque, that is, the second difference value Δ T, and the current temperature T 1 The target temperature is T 0 The current opening angle is W 1 The second slope
The first opening angle is
In another specific embodiment of the present application, the values of the target post-injection amount and the target opening angle are output and recorded in the ECU, and data of the opening degree of the exhaust valve and the calibration Map of the post-injection amount are obtained.
The embodiment of the present application further provides a control device for an aftertreatment inlet temperature, which is applied to an aftertreatment inlet of an aftertreatment heating system, where the aftertreatment heating system includes an engine, a turbine, and an exhaust valve, the engine and the turbine are connected through an exhaust pipe, an exhaust inlet of the engine is connected to an exhaust outlet of the turbine through a bypass pipe, an exhaust outlet of the turbine is the aftertreatment inlet, and the exhaust valve is disposed on the bypass pipe. The following describes a control device for post-treatment inlet temperature provided in an embodiment of the present application.
FIG. 8 is a schematic diagram of a control arrangement for aftertreatment inlet temperature according to an embodiment of the application. As shown in fig. 8, the apparatus includes:
an obtaining unit 10 configured to obtain a current rotation speed, a current torque, and a target torque of the engine;
a determining unit 20, configured to determine a target parameter of the aftertreatment heating system according to at least the current rotation speed, the current torque, and the target torque, where the target parameter includes at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve;
an adjusting unit 30, configured to increase a current parameter to the target parameter, so as to increase the temperature of the aftertreatment inlet to a target temperature, where the current parameter includes at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
The control device for the post-processing inlet temperature firstly acquires the current rotating speed, the current torque and the target torque of the engine through an acquisition unit; then, determining, by a determination unit, a target parameter of the aftertreatment heating system based at least on the current rotational speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve; finally, increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, the current parameter including at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve. The exhaust temperature of the engine can be raised by increasing the post-injection quantity, so that the temperature of the post-treatment inlet is raised, the temperature of part of high-temperature exhaust of the engine can be directly introduced into the post-treatment inlet without passing through the turbine by increasing the angle of the exhaust valve, so that the temperature of the post-treatment inlet is raised, the device determines the target post-injection oil quantity and/or the target open angle required when the post-treatment inlet temperature reaches the required temperature, then increases the current post-injection oil quantity of the engine to the target post-injection oil quantity and/or increases the current open angle of the exhaust valve to the target open angle so as to increase the current temperature of the post-treatment inlet to the target temperature, thereby avoiding the problem that the post-treatment inlet temperature cannot be accurately increased to the required temperature because the post-injection oil quantity and/or the target open angle are directly adjusted by the post-treatment inlet temperature in the prior art, and then solved among the prior art and improved the problem that the accuracy of aftertreatment entry temperature to demand temperature is low.
In order to quickly and accurately obtain the current torque of the aftertreatment heating system including the bypass passage, in one embodiment of the present application, the obtaining unit includes a first obtaining subunit, a first calculating subunit, and a first determining subunit, where the first obtaining subunit is configured to obtain the current speed and the target torque of the engine; the first calculating subunit is configured to calculate the current opening angle of the exhaust valve and the current post-injection amount of the engine, based on the current rotational speed and the target torque; the first determining subunit is configured to determine the current torque according to the current opening angle and the current post-injection amount.
Specifically, the current rotational speed of the engine may be acquired from an engine Electronic Control Unit (ECU). In addition, a semi-empirical model may be established, as shown in fig. 5, by using test data of similar models, a mathematical relationship among the engine speed, the torque, the post-treatment inlet temperature, the post-injection oil amount, and the exhaust gas flow rate is established, and then a bypass pipeline flow rate model is added, that is, the semi-empirical model is obtained. The current opening angle and the current post-injection amount of the exhaust valve can be calculated by substituting the current rotating speed, the target temperature and the target torque into a semi-empirical model, and the current torque can be determined by transmitting the values of the current opening angle and the current post-injection amount to an ECU.
In another embodiment of the present application, the determining unit includes a second determining subunit, a third determining subunit, and a first adjusting subunit, where the second determining subunit is configured to determine whether a difference between the current torque and the target torque is within a first predetermined range; the third determining subunit is configured to determine that the current post-injection amount is the target post-injection amount when the difference is within the first predetermined range; the first adjusting subunit is configured to, when the difference is not within the first predetermined range, adjust the current post-injection oil amount such that the difference is within the first predetermined range and the adjusted current post-injection oil amount is the target post-injection oil amount. In this embodiment, the post-injection amount is increased so that the current torque reaches the target torque, and the fuel consumption of the diesel engine can be effectively prevented from being deteriorated due to excessive post-injection amount.
In order to accurately calculate the post-injection amount required when the current torque reaches the target torque, in another embodiment of the present application, the first adjusting subunit includes a first calculating module, a first adjusting module, and a first processing module, wherein the first calculating module is configured to perform a first calculating step of calculating the post-injection amount when the current torque reaches the target torque at least according to the current torque and the target torque, and obtaining a first post-injection amount of the engine; the first adjusting module is used for a first adjusting step, and adjusting the current post-injection quantity to the first post-injection quantity; the first processing module is configured to repeatedly execute the first calculating step and the first adjusting step at least once in sequence until a difference between the current torque and the target torque is within the first predetermined range.
In practical applications, the first predetermined range may be-5 to 5 Nm.
In yet another embodiment of the present application, the first calculating module includes a first obtaining submodule, a first calculating submodule, and a second calculating submodule, where the first obtaining submodule is configured to obtain a first difference value, and the first difference value is a torque variation value when the post-injection amount is increased by a first predetermined value; the first calculation submodule is used for calculating the ratio of a first difference value to the first preset value to obtain a first slope; the second calculation submodule is configured to calculate a sum of a first target ratio and the current post-injection amount to obtain the first post-injection amount, where the first target ratio is a ratio of a difference between the target torque and the current torque and the first slope. And calculating the first post-injection oil amount through the first slope, so that the result of calculating the required post-injection oil amount when the current torque reaches the target torque is quicker and more accurate.
Specifically, fig. 6 is a schematic diagram of calculating the post-injection amount, and the first predetermined value may be 2% to 5% of the current oil amount, and is denoted as Δ g f The torque variation value when the post-injection amount increases by a first predetermined value, that is, the first difference value is Δ T q The current post-injection quantity is g f,1 The target torque is T q,0 The current torque is T q,1 The above first slope
The first post-injection quantity is
In another embodiment of the present application, the determining unit further includes a second obtaining subunit, a fourth determining subunit, a fifth determining subunit, and a second adjusting subunit, where the second obtaining subunit is configured to obtain a current temperature of the post-processing inlet; the fourth determining subunit is configured to determine whether a difference between the current temperature and the target temperature is within a second predetermined range; the fifth determining subunit is configured to determine, when the difference is within the second predetermined range, that the current opening angle is the target opening angle; the second adjusting subunit is configured to, when the difference is not within the second predetermined range, adjust the current opening angle such that the difference is within the second predetermined range and the adjusted current opening angle is the target opening angle. In this embodiment, the opening angle is adjusted until the temperature of the aftertreatment inlet reaches the target temperature, so as to prevent excessive high-temperature exhaust at the aftertreatment inlet due to an excessive opening angle and avoid the problem of excessive temperature at the aftertreatment inlet.
In practical applications, the target temperature is the minimum required temperature T of the aftertreatment inlet min The range of values is between 250 ℃ and 300 ℃ and can be changed according to different post-treatment systems.
In one embodiment of the present application, as shown in fig. 3, the opening angle of the exhaust valve 103 is controlled by a stepping motor 106, and the control accuracy of the stepping motor is ± 0.5 °. The exhaust valve angle can control the effective flow area of exhaust gas and further control the flow rate of the exhaust gas, and the angle range of the exhaust valve angle is 0-90 degrees, wherein 0 degree represents that the valve is in a fully closed state, 90 degrees represents that the valve is in a maximum opening state, and the effective flow area of the valve is the same as the cross section area of the exhaust pipe at the moment. The post-treatment inlet temperatures at different exhaust valve opening angles can be calculated by a continuity equation and an energy conservation equation.
In order to accurately calculate the opening angle of the exhaust valve required when the current temperature reaches the target temperature, in another embodiment of the present application, the second adjusting subunit includes a second calculating module, a second adjusting module, and a second processing module, wherein the second calculating module is configured to perform a second calculating step of calculating the opening angle of the exhaust valve at which the current temperature reaches the target temperature at least according to the current temperature and the target temperature to obtain a first opening angle of the exhaust valve; the second adjusting module is used for a second adjusting step, and adjusting the current opening angle to the first opening angle; the second processing module is configured to repeatedly perform the second calculating step and the second adjusting step at least once in sequence until a difference between the current temperature and the target temperature is within the second predetermined range.
In practice, the second predetermined range may be 0 ℃ to 3 ℃.
In yet another embodiment of the present application, the second calculating module includes a second obtaining submodule, a third calculating submodule, and a fourth calculating submodule, wherein the second obtaining submodule is configured to obtain a second difference value, where the second difference value is a temperature change value of the aftertreatment inlet when the current torque of the engine reaches the target torque and the opening angle of the exhaust valve is increased by a second predetermined value; the third calculation submodule is used for calculating the ratio of the second difference value to the second preset value to obtain a second slope; the fourth calculation submodule is configured to calculate a sum of a second target ratio and the current temperature to obtain the first opening angle, where the second target ratio is a ratio of a difference between the target temperature and the current temperature and the second slope. The first opening angle is calculated through the second slope, so that the calculation result of the exhaust valve opening angle required when the current temperature reaches the target temperature is faster and more accurate.
Specifically, fig. 7 is a schematic diagram illustrating calculation of an exhaust valve angle, where the second predetermined value may be 0 to 3 ℃, Δ W, a temperature change value at the aftertreatment inlet when the engine torque reaches the target torque, that is, the second difference value Δ T, and the current temperature T 1 The target temperature is T 0 The current opening angle is W 1 The second slope
The first opening angle is
In another specific embodiment of the present application, the apparatus further includes an output unit, where the output unit is configured to output the values of the target post-injection amount and the target opening angle and record the values in an ECU, so as to obtain data of the opening degree of the exhaust valve and the calibration Map of the post-injection amount.
The control device for post-processing inlet temperature comprises a processor and a memory, wherein the acquisition unit, the determination unit, the adjustment unit and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The core can be set to be one or more than one, and the problem that the accuracy of improving the post-processing inlet temperature to the required temperature is low in the prior art is solved by adjusting the core parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
An embodiment of the present invention provides a computer-readable storage medium on which a program is stored, the program implementing the above-described post-processing inlet temperature control method when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein the program executes the control method of the post-processing inlet temperature when running.
The embodiment of the invention provides equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein when the processor executes the program, at least the following steps are realized:
step S101, obtaining the current rotating speed, the current torque and the target torque of the engine;
step S102, determining a target parameter of the aftertreatment heating system according to at least the current rotation speed, the current torque, and the target torque, where the target parameter includes at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve;
step S103, increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, where the current parameter includes at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program of initializing at least the following method steps when executed on a data processing device:
step S101, obtaining the current rotating speed, the current torque and the target torque of the engine;
step S102, determining a target parameter of the aftertreatment heating system according to at least the current rotation speed, the current torque, and the target torque, where the target parameter includes at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve;
step S103, increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, where the current parameter includes at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
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 above-described 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 may be 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 may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. 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 above methods 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.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) the method for controlling the post-processing inlet temperature comprises the steps of firstly, obtaining the current rotating speed, the current torque and the target torque of the engine; then, determining a target parameter of the aftertreatment heating system based at least on the current speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve; finally, increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, the current parameter including at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve. The exhaust temperature of the engine can be raised by increasing the post-injection quantity, so that the temperature of the post-treatment inlet is raised, the temperature of part of high-temperature exhaust of the engine can be directly introduced into the post-treatment inlet without passing through the turbine by increasing the angle of the exhaust valve, so that the temperature of the post-treatment inlet is raised, the method comprises the steps of determining the target post-injection oil quantity and/or the target open angle required when the post-treatment inlet temperature reaches the required temperature, increasing the current post-injection oil quantity of the engine to the target post-injection oil quantity and/or increasing the current open angle of the exhaust valve to the target open angle to increase the current temperature of the post-treatment inlet to the target temperature, avoiding the problem that the post-treatment inlet temperature cannot be accurately increased to the required temperature due to the fact that the post-injection oil quantity and/or the target open angle are directly adjusted by the post-treatment inlet temperature in the prior art, and then solved among the prior art and improved the problem that the accuracy of aftertreatment entry temperature to demand temperature is low.
2) The control device for post-processing inlet temperature comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the current rotating speed, the current torque and the target torque of the engine; then, determining, by a determination unit, a target parameter of the aftertreatment heating system based at least on the current rotational speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection amount of the engine and a target opening angle of the exhaust valve; finally, increasing a current parameter to the target parameter by an adjusting unit so as to increase the temperature of the aftertreatment inlet to a target temperature, wherein the current parameter includes at least one of the following: the current post-injection quantity of the engine and the current opening angle of the exhaust valve. The exhaust temperature of the engine can be raised by increasing the post-injection quantity, so that the temperature of the post-treatment inlet is raised, the temperature of part of high-temperature exhaust of the engine can be directly introduced into the post-treatment inlet without passing through the turbine by increasing the angle of the exhaust valve, so that the temperature of the post-treatment inlet is raised, the device determines the target post-injection oil quantity and/or the target open angle required when the post-treatment inlet temperature reaches the required temperature, then increases the current post-injection oil quantity of the engine to the target post-injection oil quantity and/or increases the current open angle of the exhaust valve to the target open angle so as to increase the current temperature of the post-treatment inlet to the target temperature, thereby avoiding the problem that the post-treatment inlet temperature cannot be accurately increased to the required temperature because the post-injection oil quantity and/or the target open angle are directly adjusted by the post-treatment inlet temperature in the prior art, and then solved among the prior art and improved the problem that the accuracy of aftertreatment entry temperature to demand temperature is low.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A method for controlling an aftertreatment inlet temperature, applied to an aftertreatment inlet of an aftertreatment heating system, the aftertreatment heating system including an engine, a turbine, and an exhaust valve, the engine and the turbine being connected by an exhaust line, an exhaust inlet of the engine being connected to an exhaust outlet of the turbine by a bypass line, an exhaust outlet of the turbine being the aftertreatment inlet, the exhaust valve being disposed on the bypass line, the method comprising:
acquiring the current rotating speed, the current torque and the target torque of the engine;
determining a target parameter of the aftertreatment heating system based at least on the current speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection quantity of the engine, a target opening angle of the exhaust valve;
increasing a current parameter to the target parameter to increase the temperature of the aftertreatment inlet to a target temperature, the current parameter including at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
2. The control method according to claim 1, wherein obtaining the current rotation speed, the current torque, and the target torque of the engine includes:
acquiring the current rotating speed and the target torque of the engine;
calculating the current opening angle of the exhaust valve and the current post-injection oil quantity of the engine according to the current rotating speed and the target torque;
and determining the current torque according to the current opening angle and the current post-injection oil quantity.
3. The control method of claim 1, wherein the target parameter comprises a target post-injection amount of the engine, and determining the target parameter of the aftertreatment heating system based on the current rotational speed, the current torque, and the target torque comprises:
determining whether a difference between the current torque and the target torque is within a first predetermined range;
determining the current post-injection oil quantity as the target post-injection oil quantity under the condition that the difference value is within the first preset range;
and under the condition that the difference value is not in the first preset range, adjusting the current post-injection oil quantity to enable the difference value to be in the first preset range and the adjusted current post-injection oil quantity to be the target post-injection oil quantity.
4. The control method according to claim 3, wherein adjusting the current post-injection amount in the case where the difference is not within the first predetermined range includes:
a first calculation step of calculating a post-injection amount when the current torque reaches the target torque at least according to the current torque and the target torque to obtain a first post-injection amount of the engine;
a first adjusting step of adjusting the current post-injection oil amount to the first post-injection oil amount;
and repeating the first calculating step and the first adjusting step at least once in sequence until the difference value of the current torque and the target torque is within the first preset range.
5. The control method according to claim 4, wherein calculating a first post-injection amount of the engine based on at least the current torque and the target torque includes:
acquiring a first difference value, wherein the first difference value is a torque change value when the post-injection oil quantity is increased by a first preset value;
calculating the ratio of the first difference to the first preset value to obtain a first slope;
and calculating the sum of a first target ratio and the current post-injection oil quantity to obtain the first post-injection oil quantity, wherein the first target ratio is the ratio of the difference value of the target torque and the current torque and the first slope.
6. The control method of claim 1, wherein the target parameter comprises a target opening angle of the exhaust valve, and wherein the target parameter of the aftertreatment heating system is determined based on the current rotational speed, the current torque, and the target torque, further comprising:
obtaining a current temperature of the post-treatment inlet;
determining whether a difference between the current temperature and the target temperature is within a second predetermined range;
determining the current opening angle as the target opening angle under the condition that the difference value is in the second preset range;
and under the condition that the difference value is not in the second preset range, adjusting the current opening angle to enable the difference value to be in the second preset range and the adjusted current opening angle to be the target opening angle.
7. The control method according to claim 6, wherein adjusting the current opening angle in the case where the difference value is not within the second predetermined range includes:
a second calculation step of calculating the opening angle of the exhaust valve of which the current temperature reaches the target temperature at least according to the current temperature and the target temperature to obtain a first opening angle of the exhaust valve;
a second adjustment step of adjusting the current opening angle to the first opening angle;
and repeating the second calculating step and the second adjusting step at least once in sequence until the difference value between the current temperature and the target temperature is within the second preset range.
8. The control method of claim 7, wherein calculating a first opening angle of the exhaust valve based on at least the current temperature and the target temperature comprises:
acquiring a second difference value, wherein the second difference value is a temperature change value of the aftertreatment inlet when the opening angle of the exhaust valve is increased by a second preset value and the current torque of the engine reaches the target torque;
calculating the ratio of the second difference to the second preset value to obtain a second slope;
and calculating the sum of a second target ratio and the current temperature to obtain the first opening angle, wherein the second target ratio is the ratio of the difference between the target temperature and the current temperature and the second slope.
9. An aftertreatment inlet temperature control device applied to an aftertreatment inlet of an aftertreatment heating system, the aftertreatment heating system comprising an engine, a turbine and an exhaust valve, the engine and the turbine being connected by an exhaust line, an exhaust inlet of the engine being connected to an exhaust outlet of the turbine by a bypass line, an exhaust outlet of the turbine being the aftertreatment inlet, the exhaust valve being disposed on the bypass line, the control device comprising:
an acquisition unit configured to acquire a current rotation speed, a current torque, and a target torque of the engine;
a determination unit configured to determine a target parameter of the aftertreatment heating system based on at least the current rotational speed, the current torque, and the target torque, the target parameter including at least one of: a target post-injection quantity of the engine, a target opening angle of the exhaust valve;
an adjustment unit configured to increase a current parameter to the target parameter to increase a temperature of the aftertreatment inlet to a target temperature, the current parameter including at least one of: the current post-injection quantity of the engine and the current opening angle of the exhaust valve.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program performs the method of any one of claims 1 to 8.
11. A processor, characterized in that the processor is configured to run a program, wherein the program when running performs the method of any of claims 1 to 8.
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