Exhaust gas treatment system for vehicle, exhaust gas treatment method for vehicle, and electronic device

Abstract

The embodiment of the invention provides a waste gas treatment system of a vehicle, a waste gas treatment method of the vehicle and electronic equipment. The waste gas treatment system comprises at least two post-treatment assemblies, and the post-treatment assemblies are connected with range extenders of the vehicle in a one-to-one correspondence mode. Every two aftertreatment assemblies are connected through an exhaust branch pipe. And the post-treatment assembly connected with the started range extender is used for treating waste gas generated by the started range extender and discharging part of the treated waste gas into other post-treatment assemblies connected with an exhaust branch pipe through the exhaust branch pipe of the post-treatment assembly so as to preheat the other post-treatment assemblies. The method is used for achieving the effect of improving the catalytic conversion efficiency of the aftertreatment assembly.

Description

Technical Field

[0001] The present application relates to the technical field of exhaust gas treatment, and particularly to an exhaust gas treatment system for a vehicle, an exhaust gas treatment method for a vehicle, and an electronic device. Background Art

[0002] The exhaust gas emitted by a vehicle into the air needs to meet the emission standards. Therefore, a post-treatment assembly is used to catalytically convert the exhaust gas and purify the pollutants in the exhaust gas so that the treated exhaust gas meets the emission standards.

[0003] However, the conversion efficiency of the catalyst in the post-treatment assembly is closely related to the temperature. During the cold start stage of the range extender, the temperature of the exhaust gas passing through the post-treatment assembly is relatively low, and the conversion efficiency of the corresponding catalyst for the pollutants in the exhaust gas is also relatively low. Therefore, there is an urgent need for a solution that can improve the conversion efficiency of the catalyst in the post-treatment assembly. Summary of the Invention

[0004] Embodiments of the present application provide an exhaust gas treatment system for a vehicle, an exhaust gas treatment method for a vehicle, and an electronic device, so as to achieve the effect of improving the catalytic conversion efficiency of the post-treatment assembly.

[0005] In a first aspect, an embodiment of the present application provides an exhaust gas treatment system for a vehicle. The exhaust gas treatment system includes at least two post-treatment assemblies, and the post-treatment assemblies are connected to the range extender of the vehicle in a one-to-one correspondence; each two post-treatment assemblies are connected by an exhaust manifold;

[0006] The post-treatment assembly connected to the started range extender is configured to treat the exhaust gas generated by the started range extender, and discharge a part of the treated exhaust gas through the exhaust manifold of the post-treatment assembly into other post-treatment assemblies connected to the exhaust manifold to preheat the other post-treatment assemblies.

[0007] In a possible implementation manner, the two post-treatment assemblies connected by the exhaust manifold are a first post-treatment assembly and a second post-treatment assembly, and the exhaust manifold includes a first branch pipe;

[0008] The inlet of the first branch pipe is connected to the outlet end of the first post-treatment assembly, and the outlet of the first branch pipe is connected to the inlet end of the second post-treatment assembly.

[0009] In a possible implementation manner, the exhaust manifold further includes a second branch pipe;

[0010] The inlet of the second branch pipe is connected to the outlet end of the second post-treatment assembly, and the outlet of the second branch pipe is connected to the inlet end of the first post-treatment assembly.

[0011] In a possible implementation manner, a valve is provided at the air inlet of the exhaust manifold; the valve is used to prevent the waste gas from flowing back.

[0012] In a possible implementation manner, the valve is a one-way valve or a control valve.

[0013] In a possible implementation manner, when the valve is a control valve, the waste gas treatment system further includes a controller, and the controller is connected to the control valve; the controller is used to control the opening degree of the control valve.

[0014] In a second aspect, an embodiment of the present application provides a method for treating waste gas of a vehicle. The method is applied to a controller in a waste gas treatment system. The vehicle includes at least two range extenders. The waste gas treatment system includes a controller and at least two post-treatment assemblies. The post-treatment assemblies are connected to the range extenders of the vehicle in a one-to-one correspondence; the post-treatment assemblies are connected by an exhaust manifold; the method includes:

[0015] Controlling the post-treatment assembly connected to the started range extender to treat the waste gas generated by the started range extender, and discharging part of the treated waste gas through the exhaust manifold of the post-treatment assembly into other post-treatment assemblies connected to the exhaust manifold to preheat the other post-treatment assemblies; wherein, the waste gas treatment system is the waste gas treatment system according to any one of the first aspect.

[0016] In a possible implementation manner, the discharging part of the treated waste gas through the exhaust manifold of the post-treatment assembly into other post-treatment assemblies connected to the exhaust manifold includes:

[0017] Obtaining the start time of the range extender connected to the other post-treatment assembly;

[0018] Determining the opening degree of the exhaust manifold according to the start time;

[0019] Based on the opening degree, conducting the exhaust manifold so that part of the treated waste gas is discharged through the exhaust manifold into other post-treatment assemblies connected to the exhaust manifold.

[0020] In a possible implementation manner, the obtaining the start time of the range extender connected to the other post-treatment assembly includes:

[0021] Obtaining the driving data of the vehicle, the battery data, and the output data of the started range extender;

[0022] Predicting the start time of the range extender connected to the other post-treatment assembly according to the driving data, the battery data, and the output data of the started range extender.

[0023] In a possible implementation manner, determining the opening degree of the exhaust manifold according to the starting time includes:

[0024] Obtain the current moment;

[0025] Determine the opening degree of the exhaust manifold according to the difference between the current moment and the starting time.

[0026] In a third aspect, an embodiment of the present application provides an exhaust gas treatment device for a vehicle. The device is applied to a controller in an exhaust gas treatment system. The vehicle includes at least two range extenders. The exhaust gas treatment system includes a controller and at least two post-treatment assemblies. The post-treatment assemblies are connected to the range extenders of the vehicle in one-to-one correspondence; between every two post-treatment assemblies is connected by an exhaust manifold; the device includes:

[0027] A control module, configured to control the post-treatment assembly connected to the started range extender to treat the exhaust gas generated by the started range extender, and discharge part of the treated exhaust gas through the exhaust manifold of the post-treatment assembly into other post-treatment assemblies connected to the exhaust manifold to preheat the other post-treatment assemblies; wherein, the exhaust gas treatment system is the exhaust gas treatment system according to any one of the first aspect.

[0028] In a fourth aspect, an embodiment of the present application provides an electronic device, including: a memory, a processor;

[0029] The memory stores computer execution instructions;

[0030] The processor executes the computer execution instructions stored in the memory, so that the processor executes the second aspect and / or various possible implementation manners of the second aspect as above.

[0031] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores computer execution instructions. When the computer execution instructions are executed by a processor, they are used to implement the second aspect and / or various possible implementation manners of the second aspect as above.

[0032] In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, it implements the second aspect and / or various possible implementation manners of the second aspect as above.

[0033] The exhaust gas treatment system for a vehicle, the exhaust gas treatment method for a vehicle, and the electronic device provided by the embodiments of the present application. When the vehicle includes at least two range extenders and the exhaust gas treatment system includes at least two aftertreatment assemblies connected to the range extenders one by one, each two aftertreatment assemblies are connected by an exhaust manifold. Further, the aftertreatment assembly connected to the started range extender can be used to treat the exhaust gas generated by the started range extender, and part of the treated exhaust gas is discharged into other aftertreatment assemblies connected to the exhaust manifold through the exhaust manifold of the aftertreatment assembly to preheat the other aftertreatment assemblies. In this way, the high-temperature exhaust gas generated by the started range extender can be used to preheat other aftertreatment assemblies through the exhaust manifold, realizing the reuse of heat, improving the catalytic conversion efficiency, reducing the emissions of pollutants, and, compared with increasing the amount of precious metal catalyst or additionally setting a heating device, reducing the production cost and without additional fuel consumption, improving the fuel economy of the range extender. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are incorporated herein and form a part of this specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application.

[0035] Figure 1 is a schematic structural diagram of an exhaust gas treatment system for a vehicle provided by the present application;

[0036] Figure 2 is a schematic structural diagram of another exhaust gas treatment system for a vehicle provided by the present application;

[0037] Figure 3 is a schematic structural diagram of another exhaust gas treatment system for a vehicle provided by the present application;

[0038] Figure 4 is a schematic structural diagram of another exhaust gas treatment system for a vehicle provided by the present application;

[0039] Figure 5 is a schematic flow chart of the exhaust gas treatment method for a vehicle provided by the present application Figure 1 ;

[0040] Figure 6 is a schematic flow chart of the exhaust gas treatment method for a vehicle provided by the present application Figure 2 ;

[0041] Figure 7 is a schematic structural diagram of the exhaust gas treatment device for a vehicle provided by the present application;

[0042] Figure 8 is a schematic structural diagram of the electronic device provided by the present application.

[0043] Description of the reference numerals:

[0044] 100: Vehicle;

[0045] 101: Exhaust gas treatment system;

[0046] 102: Range extender;

[0047] 103: Aftertreatment assembly;

[0048] 104: Exhaust manifold;

[0049] 105: Check valve;

[0050] 106: Controller;

[0051] 107: Control valve;

[0052] 1031: First aftertreatment assembly;

[0053] 1032: Second aftertreatment assembly;

[0054] 1041: First manifold;

[0055] 1042: Second manifold.

[0056] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0057] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0058] It should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise stated, "a plurality" means two or more. "And / or" describes the associated relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0059] An extender is usually a small engine or other power device that starts when the battery of an electric vehicle is low, drives a generator to generate electricity, and the generated electric energy is used to supply power to the motor, thereby driving the vehicle. At the same time, it can also charge the battery to extend the vehicle's driving range.

[0060] The aftertreatment assembly refers to a set of devices installed downstream of the extender, which is used to treat the exhaust gas generated by the extender to reduce pollutant emissions, reduce noise, etc., so that the exhaust gas meets the environmental protection and relevant standard requirements. It usually includes the following components:

[0061] (1) Catalytic converter: Through the action of a catalyst, harmful pollutants such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) in the exhaust gas are converted into carbon dioxide ( ), water ( ), and nitrogen ( ), etc., substances that are harmless or less harmful.

[0062] (2) Particulate trap: Generally used to capture particulate matter in the exhaust gas, such as soot particles, etc., to reduce particulate matter emissions.

[0063] (3) Muffler: Reduces exhaust noise.

[0064] In the catalytic converter of the aftertreatment assembly, the conversion efficiency of the catalyst is closely related to the temperature. In the exhaust gas generated during the cold start stage of the extender, the proportion of pollutants is relatively high. At this time, the temperature of the aftertreatment assembly is relatively low, and the conversion efficiency of pollutants is relatively low, and the un-converted exhaust gas will be directly discharged into the atmosphere. Currently, one way is to increase the amount of precious metal catalyst in the aftertreatment assembly or set up a heating device to improve the catalytic conversion efficiency, but the production cost of this method is relatively high; another way is to increase the fuel injection amount of the extender to increase the exhaust temperature, thereby quickly heating up the catalyst, but this method results in an increase in fuel consumption.

[0065] During the research process, the inventors of the present application found that when multiple range extenders are installed in a vehicle, taking the installation of range extender A and range extender B as an example, when the vehicle runs relying only on range extender A working alone, the high-temperature exhaust gas generated after the internal fuel combustion passes through aftertreatment assembly A for catalytic conversion and is then discharged into the atmosphere. However, the high-temperature exhaust gas generated by range extender A still contains a very considerable amount of heat after being treated by aftertreatment assembly A. Therefore, the present application proposes an exhaust gas treatment system for a vehicle. An exhaust manifold is installed between the rear end of aftertreatment assembly A of range extender A and the front end of aftertreatment assembly B of range extender B. When range extender A operates stably, a part of the treated high-temperature exhaust gas is shunted into this exhaust manifold under the drive of the pressure difference and flows to aftertreatment assembly B of range extender B. At this time, even if range extender B has not been started, the temperature of aftertreatment assembly B of range extender B begins to rise steadily, and the catalytic activity inside aftertreatment assembly B of range extender B is gradually activated, approaching the ideal light-off temperature. Then, after range extender B is started, the catalyst in aftertreatment assembly B is already in an efficient working state, improving the catalytic conversion efficiency, and there is no need to increase the dosage of precious metal catalysts or additionally set heating devices, reducing the production cost without consuming additional fuel and improving the fuel economy of the range extender.

[0066] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0067] Figure 1 It is a schematic structural diagram of an exhaust gas treatment system for a vehicle provided by the present application. As Figure 1 shown, the vehicle 100 includes an exhaust gas treatment system 101 and at least two range extenders 102. Among them, the exhaust gas treatment system 101 includes at least two aftertreatment assemblies 103, and the aftertreatment assemblies 103 are connected to the range extenders 102 in a one-to-one correspondence; the exhaust manifold 104 is connected between every two aftertreatment assemblies 103. It should be noted that Figure 1 it is shown by taking the example of including two range extenders (range extender 1 and range extender 2) and two aftertreatment assemblies (aftertreatment assembly 1 and aftertreatment assembly 2).

[0068] The range extender 102 is used to supply power to the electric motor of the vehicle or charge the battery of the vehicle, and the type of the range extender is not limited in the embodiments of the present application.

[0069] The aftertreatment assembly 103 is used to treat the exhaust gas generated by the range extender and reduce the emissions of pollutants in the exhaust gas. The type, structure and type of catalyst used in the aftertreatment assembly are not limited in the embodiments of the present application.

[0070] An exhaust manifold 104 is used to form an exhaust gas circulation circuit between two aftertreatment assemblies. The aftertreatment assembly connected to the started range extender can discharge the exhaust gas generated by the started range extender into other aftertreatment assemblies through the exhaust manifold. In the embodiments of the present application, the shape and material of the exhaust manifold are not limited and can be specifically set according to actual needs.

[0071] The aftertreatment assembly connected to the started range extender is used to treat the exhaust gas generated by the started range extender and discharge part of the treated exhaust gas into other aftertreatment assemblies connected to the exhaust manifold of this aftertreatment assembly through the exhaust manifold of this aftertreatment assembly to preheat other aftertreatment assemblies.

[0072] In some possible implementation manners, the starting sequence of multiple range extenders is fixed. The inlet of the exhaust manifold is connected to the outlet end of the aftertreatment assembly of the range extender that starts first, and the outlet of the exhaust manifold is connected to the inlet end of the aftertreatment assembly of the range extender that starts later.

[0073] Specifically, refer to Figure 2 as shown in Figure 2 which is a schematic structural diagram of another exhaust gas treatment system for a vehicle provided by the present application. The two aftertreatment assemblies connected by the exhaust manifold 104 are a first aftertreatment assembly 1031 and a second aftertreatment assembly 1032. The exhaust manifold 104 includes a first branch pipe 1041; Figure 2 The arrows in [the figure] indicate the air flow direction. When the range extender connected to the first aftertreatment assembly 1031 starts first and the range extender connected to the second aftertreatment assembly 1032 starts later, the inlet of the first branch pipe 1041 is connected to the outlet end of the first aftertreatment assembly 1031, and the outlet of the first branch pipe 1041 is connected to the inlet end of the second aftertreatment assembly 1032. In this way, since the starting sequence of multiple range extenders is fixed, the air flow direction of the exhaust gas is fixed. By setting one exhaust manifold between the two aftertreatment assemblies, it is possible to preheat other aftertreatment assemblies connected to the exhaust manifold after one range extender starts, reduce the number of exhaust manifolds provided, and lower the production cost.

[0074] In some possible implementation manners, the starting sequence of multiple range extenders is not fixed. Refer to Figure 3 as shown in Figure 3Schematic structural diagram of another exhaust gas treatment system for a vehicle provided by this application. The two post-treatment assemblies connected by the exhaust manifold 104 are the first post-treatment assembly 1031 and the second post-treatment assembly 1032. The exhaust manifold 104 includes a first branch pipe 1041 and a second branch pipe 1042; the intake port of the first branch pipe 1041 is connected to the outlet end of the first post-treatment assembly 1031, and the outlet port of the first branch pipe 1041 is connected to the intake end of the second post-treatment assembly 1032; the intake port of the second branch pipe 1042 is connected to the outlet end of the second post-treatment assembly 1032, and the outlet port of the second branch pipe 1042 is connected to the intake end of the first post-treatment assembly 1031. In this way, the range extender to be started first can be selected based on requirements, and then the corresponding exhaust manifold can be selected to be conducted to preheat the post-treatment assembly of the range extender to be started later, improving the flexibility of starting the range extender while preheating other post-treatment assemblies.

[0075] In some possible implementation manners, a valve is provided at the intake port of the exhaust manifold; this valve can be used to prevent exhaust gas from flowing back.

[0076] Exemplarily, this valve can be a one-way valve. There is a valve disc or valve core inside the one-way valve. When there is no air flow or the air flow is in the reverse direction, the valve disc closes the channel under the action of its own gravity or spring force; when the exhaust gas generated by the range extender flows in from the specified direction and the pressure reaches a certain value (such as greater than 0.1 MPa), it can overcome the resistance of the valve disc and push open the valve disc, enabling the exhaust gas to pass through smoothly and enter other post-treatment assemblies, effectively avoiding the interference of exhaust gas backflow between the post-treatment assemblies of the two range extenders and ensuring that the exhaust gas flows along the designed path. Refer to Figure 3 As shown, one-way valves 105 are respectively provided at the intake ports of the first branch pipe 1041 and the second branch pipe 1042, and these one-way valves 105 can ensure the air flow direction in the first branch pipe and the second branch pipe.

[0077] This valve can also be a control valve. This application does not limit the type of this control valve. For example, it can be an electric control valve, a solenoid valve, or a pneumatic valve, etc.

[0078] Exemplarily, Figure 4 Schematic structural diagram of another exhaust gas treatment system for a vehicle provided by this application. As Figure 4 shown, this exhaust gas treatment system further includes a controller 106, and this controller 106 is connected to a control valve 107. This controller can be an Electronic Control Unit (ECU) or other electronic devices with processing capabilities. This controller 106 can be used to control the opening degree of the control valve 107.

[0079] In this way, the controller can selectively conduct the required exhaust manifold by controlling the opening degree of the control valve, and can control the flow rate of the exhaust gas flowing into the exhaust manifold, or rather, into other aftertreatment assemblies, by controlling the opening degree, thereby controlling the preheating temperature of other aftertreatment assemblies.

[0080] In this embodiment, when the vehicle includes at least two range extenders and the exhaust gas treatment system includes at least two aftertreatment assemblies connected to the range extenders one by one, the at least two aftertreatment assemblies are connected by an exhaust manifold; furthermore, the aftertreatment assembly connected to the started range extender can be used to treat the exhaust gas generated by the started range extender, and part of the treated exhaust gas can be discharged into other aftertreatment assemblies connected to the exhaust manifold of this aftertreatment assembly through the exhaust manifold of this aftertreatment assembly to preheat other aftertreatment assemblies. In this way, the high-temperature exhaust gas generated by the started range extender can be used to preheat other aftertreatment assemblies through the exhaust manifold, realizing the reuse of heat, improving the catalytic conversion efficiency, reducing the emissions of pollutants, and, compared with increasing the amount of precious metal catalyst or additionally setting up a heating device, reducing the production cost, and at the same time, without additional fuel consumption, improving the fuel economy of the range extender.

[0081] This application also provides a method for treating exhaust gas of a vehicle, which can, after a range extender is started, control the aftertreatment assembly of the started range extender to preheat other aftertreatment assemblies in the form of discharging exhaust gas through the exhaust manifold. The execution subject of the following embodiments can be the controller in the exhaust gas treatment system.

[0082] Figure 5 Flow schematic of the method for treating exhaust gas of the vehicle provided by this application Figure 1 , as shown in reference Figure 5 The method includes:

[0083] S201. Control the aftertreatment assembly connected to the started range extender to treat the exhaust gas generated by the started range extender.

[0084] Exemplarily, the aftertreatment assembly may include a heating device. After the range extender is started, the controller of the exhaust gas treatment system can control the heating device to heat, so as to improve the catalytic conversion efficiency of the aftertreatment assembly connected to the started range extender. After the exhaust gas generated by the range extender enters the aftertreatment assembly connected to the range extender, the exhaust gas can be efficiently treated.

[0085] It should be noted that this application embodiment does not limit how the aftertreatment assembly treats the exhaust gas.

[0086] S202. Discharge part of the treated exhaust gas into other aftertreatment assemblies connected to the exhaust manifold through the exhaust manifold of this aftertreatment assembly to preheat other aftertreatment assemblies.

[0087] In some possible implementations, no valve is provided in the exhaust manifold. At this time, some of the treated exhaust gas discharged from the outlet end of the aftertreatment assembly can be discharged into other aftertreatment assemblies through the exhaust manifold to preheat other aftertreatment assemblies.

[0088] In some possible implementations, a one-way valve is provided in the exhaust manifold. At this time, some of the treated exhaust gas discharged from the outlet end of the aftertreatment assembly can be discharged into other aftertreatment assemblies through the one-way valve of the exhaust manifold under the push of air pressure to preheat other aftertreatment assemblies.

[0089] In some possible implementations, a control valve is provided in the exhaust manifold. At this time, the controller can control the opening degree of the control valve to conduct the exhaust manifold, so that some of the treated exhaust gas discharged from the outlet end of the aftertreatment assembly is discharged into other aftertreatment assemblies through the exhaust manifold to preheat other aftertreatment assemblies.

[0090] In this embodiment, the controller of the exhaust gas treatment system can control the aftertreatment assembly connected to the started range extender to treat the exhaust gas generated by the started range extender, and discharge some of the treated exhaust gas through the exhaust manifold of the aftertreatment assembly into other aftertreatment assemblies connected to the exhaust manifold to preheat other aftertreatment assemblies. In this way, while using the aftertreatment assembly connected to the started range extender to treat the exhaust gas, the heat of the exhaust gas can be reused. Based on the exhaust manifold, other aftertreatment assemblies are preheated, solving the problems of poor catalyst activity and low pollutant conversion efficiency caused by low temperature in the cold start stage of the aftertreatment assembly, improving the catalytic conversion efficiency of the aftertreatment assembly, reducing the emissions of pollutants, and moreover, the heat recovery mechanism avoids energy waste, improves the overall energy utilization efficiency of the vehicle power system, reduces the additional energy consumption expenditure, and further reduces the operating cost of the vehicle.

[0091] Figure 6 Schematic flow of the exhaust gas treatment method for the vehicle provided in this application Figure 2 , when the valve of the exhaust manifold is a control valve, as Figure 6 shown, the method may include the following steps:

[0092] S301. Control the aftertreatment assembly connected to the started range extender to treat the exhaust gas generated by the started range extender.

[0093] It should be noted that this step can refer to the aforementioned step S201.

[0094] S302. Obtain the start time of the range extender connected to other aftertreatment assemblies.

[0095] Exemplarily, after one range extender is started, the controller can obtain in advance the start time of other range extenders, and then can preheat the aftertreatment assembly of other range extenders to be started in advance, without preheating when not needed, to prevent the high-temperature environment from affecting the service life of the catalyst in the aftertreatment assembly, the carrier structure of the catalyst, etc., resulting in a reduction in the catalytic conversion efficiency.

[0096] In some possible implementation manners, the controller can receive the start time sent by the vehicle's vehicle controller.

[0097] In some possible implementation manners, the controller can obtain the vehicle's driving data, battery data, and the output data of the started range extender, and predict the start time of the range extender connected to other aftertreatment assemblies according to the driving data, battery data, and the output data of the started range extender. Among them, the vehicle's driving data is used to describe the data during the vehicle's driving process, for example, it can include the vehicle's driving speed, acceleration, the slope of the road where the vehicle is driving, the vehicle's current driving mode, etc. The battery data is used to describe the data related to the vehicle's battery, for example, it can include the remaining power, voltage, temperature, current, health state, etc. of the battery. The output data of the started range extender is used to describe the output situation of the started range extender, for example, it can include the output power, torque, etc.

[0098] For example, the controller can use machine learning algorithms such as support vector machines or neural networks to classify the vehicle's driving conditions according to the vehicle's driving data. For example, the driving conditions can be classified into categories such as urban congestion, highway cruising, mountain driving, etc. It can be understood that different driving conditions have different characteristics of power demand. The power demand fluctuates greatly under urban congestion conditions, while the power demand is relatively stable under highway cruising conditions. Furthermore, according to the identified driving conditions, combined with the vehicle's dynamic model, the power required by the vehicle at a preset moment (such as the moment 3 minutes later) can be predicted.

[0099] Then, according to the battery data and the output data of the started range extender, the estimated output power is determined. For example, the estimated power output of the battery is determined according to the battery data, and the estimated power data of the range extender is determined according to the output data of the started range extender. The sum of the two is used as the estimated output power; furthermore, it can be determined whether the estimated output power meets the power required by the vehicle in the next period of time. If it is determined that it does not meet the requirement, it is determined to start other range extenders, and then the preset moment can be used as the start time of other range extenders, or the preset moment minus the preset time interval can be used as the start time of other range extenders. For example, if it is predicted that the power required by the vehicle at the moment 3 minutes later is greater than the estimated output power, indicating that other range extenders need to be started, then the moment 3 minutes later can be used as the start time to start other range extenders, or the preset time interval can be advanced, for example, the moment 2 minutes later can be used as the start time.

[0100] S303. Determine the opening degree of the exhaust manifold according to the starting time.

[0101] In some possible implementation manners, the opening degree of the exhaust manifold can be preset. For example, the opening degree is fixed at 50%. After determining the starting time, the opening degree of the exhaust manifold can be determined.

[0102] In some possible implementation manners, obtain the current moment; determine the opening degree of the exhaust manifold according to the difference between the current moment and the starting time.

[0103] For example, the corresponding relationship between the difference value and the opening degree can be preset, and the corresponding opening degree is selected according to the difference value. The smaller the difference value, the larger the opening degree, so as to ensure rapid preheating within a short time. It can also be based on the difference value and the preset Proportional-Integral-Derivative Control (PID control) algorithm to output the opening degree value and accurately control the opening degree of the control valve.

[0104] S304. Based on the opening degree, conduct the exhaust manifold so that part of the processed exhaust gas is discharged into other post-treatment assemblies connected to the exhaust manifold through the exhaust manifold.

[0105] Exemplarily, the controller controls the control valve to open and reach the opening degree based on the opening degree to conduct the exhaust manifold, so that part of the processed exhaust gas is discharged into other post-treatment assemblies connected to the exhaust manifold through the exhaust manifold.

[0106] In this embodiment, the controller of the exhaust gas treatment system can, after a range extender is started, determine the opening degree of the exhaust manifold by obtaining the starting time of the range extender connected to other post-treatment assemblies, and then conduct the exhaust manifold based on the opening degree, so that part of the processed exhaust gas is discharged into other post-treatment assemblies connected to the exhaust manifold through the exhaust manifold. In this way, while the controller uses the post-treatment assemblies connected to the started range extender to process the exhaust gas, it can reuse the heat of the exhaust gas and preheat other post-treatment assemblies based on the exhaust manifold, solving the problems of poor catalyst activity and low pollutant conversion efficiency of the post-treatment assemblies due to low temperature during the cold start stage, improving the catalytic conversion efficiency of the post-treatment assemblies, reducing the emissions of pollutants. At the same time, the controller can control the opening degree of the control valve of the exhaust manifold through the starting time to control the preheating time of other post-treatment assemblies and prevent low catalytic conversion efficiency caused by insufficient preheating or over-preheating.

[0107] Figure 7 For the structural schematic diagram of the exhaust gas treatment device of the vehicle provided by the present application, as Figure 7 shown, the exhaust gas treatment device 400 of the vehicle provided in this embodiment includes:

[0108] The control module 401 is configured to control the aftertreatment assembly connected to the started range extender, process the exhaust gas generated by the started range extender, and discharge part of the processed exhaust gas through the exhaust branch pipe of the aftertreatment assembly into other aftertreatment assemblies connected to the exhaust branch pipe to preheat the other aftertreatment assemblies.

[0109] In some possible implementation manners, the control module 401 is specifically configured to:

[0110] Obtain the startup time of the range extender connected to the other aftertreatment assembly;

[0111] Determine the opening degree of the exhaust branch pipe according to the startup time;

[0112] Based on the opening degree, conduct the exhaust branch pipe so that part of the processed exhaust gas is discharged through the exhaust branch pipe into other aftertreatment assemblies connected to the exhaust branch pipe.

[0113] In some possible implementation manners, the control module 401 is specifically configured to:

[0114] Obtain the driving data of the vehicle, the battery data, and the output data of the started range extender;

[0115] Predict the startup time of the range extender connected to the other aftertreatment assembly according to the driving data, the battery data, and the output data of the started range extender.

[0116] In some possible implementation manners, the control module 401 is specifically configured to:

[0117] Obtain the current moment;

[0118] Determine the opening degree of the exhaust branch pipe according to the difference between the current moment and the startup time.

[0119] The exhaust gas treatment device of the vehicle provided in this embodiment can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be elaborated here in this embodiment.

[0120] Figure 8 It is a schematic structural diagram of the electronic device provided in this application. As Figure 8 shown, the electronic device 500 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the electronic device 500 further includes a communication component 503. Wherein, the processor 501, the memory 502, and the communication component 503 are connected through a bus. The electronic device may be the aforementioned controller.

[0121] In a specific implementation process, at least one processor 501 executes computer-executable instructions stored in a memory 502, enabling at least one processor 501 to execute the above-mentioned method.

[0122] For the specific implementation process of the processor 501, reference can be made to the above method embodiments. Their implementation principles and technical effects are similar, and thus will not be elaborated herein.

[0123] In the above embodiments, it should be understood that the processor may be a central processing unit (Central Processing Unit, CPU for short), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP for short), application specific integrated circuits (Application Specific Integrated Circuit, ASIC for short), etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

[0124] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-volatile Memory, NVM), such as at least one disk memory.

[0125] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience in representation, the buses in the drawings of this application are not limited to only one bus or one type of bus.

[0126] This application also provides a vehicle, including the aforementioned exhaust gas treatment system.

[0127] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-mentioned method.

[0128] This application also provides a computer-readable storage medium storing computer-executable instructions that, when executed by a processor, implement the above-mentioned method.

[0129] The above-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk. The readable storage medium may be any available medium accessible by a general-purpose or special-purpose computer.

[0130] An exemplary readable storage medium is coupled to the processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium may also be a component of the processor. The processor and the readable storage medium may be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium may also exist as discrete components in a device.

[0131] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other may be indirect couplings or communication connections through some interfaces, devices, or units, and may be in electrical, mechanical, or other forms.

[0132] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0133] In addition, in each embodiment of the present invention, the functional units may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0134] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or a part of this technical solution can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., various media that can store program codes.

[0135] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROMs, RAMs, magnetic disks, or optical discs, etc., various media that can store program codes.

[0136] Finally, it should be noted that: After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation manners of the present invention. The present invention aims to cover any variations, uses, or adaptive changes of the present invention. These variations, uses, or adaptive changes follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field of the present invention that are not disclosed in the present invention. It is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. An exhaust gas treatment system for a vehicle, characterized in that, The exhaust gas treatment system includes at least two post-treatment assemblies, and the post-treatment assemblies are connected to the range extender of the vehicle in a one-to-one correspondence; the exhaust manifolds are connected between every two post-treatment assemblies; The post-treatment assembly connected to the started range extender is used to treat the exhaust gas generated by the started range extender, and discharge part of the treated exhaust gas through the exhaust manifold of this post-treatment assembly into other post-treatment assemblies connected to this exhaust manifold to preheat the other post-treatment assemblies.

2. The system according to claim 1, characterized in that, The two post-treatment assemblies connected by the exhaust manifold are the first post-treatment assembly and the second post-treatment assembly, and the exhaust manifold includes a first branch pipe; The inlet of the first branch pipe is connected to the outlet end of the first post-treatment assembly, and the outlet of the first branch pipe is connected to the inlet end of the second post-treatment assembly.

3. The system according to claim 2, wherein The exhaust manifold further includes a second branch pipe; The inlet of the second branch pipe is connected to the outlet end of the second post-treatment assembly, and the outlet of the second branch pipe is connected to the inlet end of the first post-treatment assembly.

4. The system according to any one of claims 1-3, characterized in that, A valve is provided at the inlet of the exhaust manifold; the valve is used to prevent the backflow of exhaust gas.

5. The system according to claim 4, wherein The valve is a one-way valve or a control valve.

6. The system according to claim 4, wherein When the valve is a control valve, the exhaust gas treatment system further includes a controller, and the controller is connected to the control valve; the controller is used to control the opening degree of the control valve.

7. A method for treating exhaust gas of a vehicle, characterized in that, The method is applied to the controller in the exhaust gas treatment system. The vehicle includes at least two range extenders. The exhaust gas treatment system includes a controller and at least two post-treatment assemblies. The post-treatment assemblies are connected to the range extenders of the vehicle in a one-to-one correspondence; the exhaust manifolds are connected between every two post-treatment assemblies; the method includes: Controlling the post-treatment assembly connected to the started range extender to treat the exhaust gas generated by the started range extender, and discharging part of the treated exhaust gas through the exhaust manifold of this post-treatment assembly into other post-treatment assemblies connected to this exhaust manifold to preheat the other post-treatment assemblies; wherein, the exhaust gas treatment system is the exhaust gas treatment system according to any one of claims 1-6.

8. The method according to claim 7, wherein The discharging part of the treated exhaust gas through the exhaust manifold of this post-treatment assembly into other post-treatment assemblies connected to this exhaust manifold includes: Obtaining the starting time of the range extender connected to the other post-treatment assembly; Determining the opening degree of this exhaust manifold according to the starting time; Based on the opening degree, conducting this exhaust manifold so that part of the treated exhaust gas is discharged through this exhaust manifold into other post-treatment assemblies connected to this exhaust manifold.

9. The method according to claim 8, wherein The obtaining the starting time of the range extender connected to the other post-treatment assembly includes: Obtaining the driving data of the vehicle, the battery data and the output data of the started range extender; Predicting the starting time of the range extender connected to the other post-treatment assembly according to the driving data, the battery data and the output data of the started range extender.

10. The method according to claim 8, wherein The determining the opening degree of this exhaust manifold according to the starting time includes: Obtaining the current moment; Determining the opening degree of this exhaust manifold according to the difference between the current moment and the starting time.

11. An electronic device, characterized in that, including: a memory, a processor; The memory stores computer execution instructions; The processor executes the computer-executable instructions stored in the memory, such that the processor performs the method according to any one of claims 7-10.

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