Engine waste gas treatment method and system of hybrid electric vehicle and hybrid electric vehicle
By using a parameter acquisition module and a main controller to control the state switching of the switching component in the engine exhaust gas treatment system of hybrid vehicles, the problem of increased fuel consumption caused by particulate matter traps has been solved, achieving reduced fuel consumption and particulate matter emissions that meet industry standards.
Patent Information
- Application Number
- CN202511019897.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-23
- Publication Date
- 2025-11-11
AI Technical Summary
In the existing technology, the particulate filter in hybrid vehicles causes increased fuel consumption when processing particulate matter in engine exhaust.
By setting up a parameter acquisition module and a main controller in the engine exhaust gas treatment system of hybrid vehicles, the state switching of the switching components is controlled according to the engine's operating status parameters, thus preventing exhaust gas from passing through the particulate filter and reducing fuel consumption.
It effectively reduces fuel consumption of hybrid vehicles while ensuring that the particulate matter content in exhaust gas meets industry regulations, avoiding increased back pressure caused by particulate matter filter blockage.
Smart Images
Figure CN120925951A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hybrid vehicle technology, and in particular to a method, system, and hybrid vehicle for treating engine exhaust gas. Background Technology
[0002] As people's environmental awareness gradually increases and the call for environmental protection grows louder, vehicle emission control, as a major source of pollution, has become a focus of attention.
[0003] Currently, the industry has imposed strict limits on the particulate matter content in vehicle exhaust. To ensure that the particulate matter content in vehicle exhaust remains within the industry-regulated range, particulate filters can be continuously used to treat particulate matter in vehicle exhaust during the operation of hybrid vehicles.
[0004] However, over time, the particulate filter accumulates more particulate matter, leading to an increase in the number of blind holes. This, in turn, increases the back pressure of the engine's exhaust emissions, resulting in increased fuel consumption in hybrid vehicles. Summary of the Invention
[0005] This application provides a method, system, and hybrid vehicle for treating engine exhaust gas of a hybrid vehicle, which addresses the problem of increased fuel consumption in hybrid vehicles when treating particulate matter in engine exhaust gas in the prior art.
[0006] In a first aspect, this application provides a method for treating engine exhaust gas in a hybrid vehicle, applied to an engine exhaust gas treatment system for a hybrid vehicle. The system includes a parameter acquisition module, a main controller, a particulate filter, an air intake, a first exhaust branch, a second exhaust branch, a first switching switch assembly, a second switching switch assembly, and an exhaust port. The first and second exhaust branches are connected in parallel between the air intake and the exhaust port. The particulate filter is disposed in the second exhaust branch. The method includes:
[0007] The parameter acquisition module collects operating status parameters associated with the engine of the hybrid vehicle.
[0008] The main controller determines whether the hybrid vehicle's engine is in the target operating condition based on the operating status parameters. When the engine is in the target operating condition, the number of particulate matter in the exhaust gas exceeds the set threshold.
[0009] When the main controller determines that the engine is not in the target operating condition, it controls the first switching switch assembly to switch from the first open / closed state to the second open / closed state, and controls the second switching switch assembly to switch from the first open / closed state to the second open / closed state. When both the first and second switching switch assemblies are in the first open / closed state, the intake port, the second exhaust branch, and the exhaust port are sequentially connected, and the intake port, the first exhaust branch, and the exhaust branch are not connected. When both the first and second switching switch assemblies are in the second open / closed state, the intake port, the first exhaust branch, and the exhaust port are sequentially connected, and the intake port, the second exhaust branch, and the exhaust branch are not connected.
[0010] In some implementations, the parameter acquisition module includes a temperature sensor, and the operating status parameters associated with the engine of the hybrid vehicle include the temperature of the coolant used to cool the engine, acquired by the temperature sensor.
[0011] In some implementations, the main controller determines whether the hybrid vehicle's engine is in a target operating condition based on operating status parameters, including:
[0012] When the coolant temperature is lower than the set temperature threshold, the main controller determines that the hybrid vehicle's engine is in the target operating condition.
[0013] In some implementations, after determining that the hybrid vehicle's engine is under target operating conditions, the method provided in this application further includes:
[0014] When it is determined that the temperature of the coolant is higher than the set temperature threshold, the first switching component is controlled to switch from the second open / closed state to the first open / closed state, and the second switching component is controlled to switch from the second open / closed state to the first open / closed state.
[0015] In some implementations, the parameter acquisition module includes a speed sensor, a torque sensor, or a power acquisition module. The operating status parameters associated with the engine of the hybrid vehicle include: the engine speed acquired by the speed sensor, the engine torque acquired by the torque sensor, and the engine power acquired by the power acquisition module.
[0016] In some implementations, the main controller determines whether the hybrid vehicle's engine is under target operating conditions based on operating status parameters, including:
[0017] If the main controller determines that the engine of the hybrid vehicle is in the target operating condition when the variance of the engine speed is greater than the set first variance threshold, or the variance of the engine torque is greater than the set second variance threshold, or the variance of the engine power is greater than the set third variance threshold within a preset time period.
[0018] Secondly, this application also provides an engine exhaust gas treatment system for a hybrid vehicle, including a parameter acquisition module, a main controller, a particulate filter, an air intake, a first exhaust branch, a second exhaust branch, a first switching switch assembly, a second switching switch assembly, and an exhaust port. The first exhaust branch and the second exhaust branch are connected in parallel between the air intake and the exhaust port. The particulate filter is disposed in the second exhaust branch. The main controller is used to execute the method provided in the first aspect of this application.
[0019] In some embodiments, the first switching component is a first single-pole double-throw switch, wherein the first single-pole double-throw switch is located near the air inlet, the stationary contact of the first single-pole double-throw switch is located at the junction of the first inner wall of the first exhaust branch and the first inner wall of the second exhaust branch, the first moving contact of the first single-pole double-throw switch is located on the second inner wall of the first exhaust branch, and the second moving contact of the first single-pole double-throw switch is located on the second inner wall of the second exhaust branch;
[0020] The second switching component is a second single-pole double-throw switch, wherein the second single-pole double-throw switch is located near the exhaust port, the stationary contact of the second single-pole double-throw switch is located at the intersection of the first inner wall of the first exhaust branch and the first inner wall of the second exhaust branch, the first moving contact of the second single-pole double-throw switch is located on the second inner wall of the first exhaust branch, and the second moving contact of the second single-pole double-throw switch is located on the second inner wall of the second exhaust branch;
[0021] When the stationary contact of the first single-pole double-throw switch is connected to the second moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the second moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the second open / closed state.
[0022] When the stationary contact of the first single-pole double-throw switch is connected to the first moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the first moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the first open / closed state.
[0023] In some implementations, a three-way catalytic converter is also provided at the exhaust port.
[0024] Thirdly, this application also provides a hybrid vehicle equipped with the engine exhaust gas treatment system of the hybrid vehicle provided in the first aspect of this application.
[0025] Fourthly, this application also provides a storage medium storing a computer program, which, when executed by a main controller, causes the main controller to perform the method provided in the first aspect of this application.
[0026] Fifthly, this application also provides a computer program product, including a computer program that, when run, causes a hybrid vehicle to perform the method provided in the first aspect of this application.
[0027] This application provides a method, system, and hybrid vehicle for treating engine exhaust gas. The main controller determines whether the hybrid vehicle's engine is under a target operating condition based on operating status parameters. Specifically, when the engine is under the target operating condition, the number of particulate matter in the emitted exhaust gas exceeds a set threshold.
[0028] When the main controller determines that the engine is not operating under target conditions, it indicates that the number of particulate matter in the exhaust gas is less than or equal to a set threshold (meeting industry-mandated limits on particulate matter emissions). The controller then controls the first switching assembly to switch from a first open / closed state to a second open / closed state, and vice versa. When both the first and second switching assemblies are in the second open / closed state, the intake port, the first exhaust branch, and the exhaust port are sequentially connected, while the intake port, the second exhaust branch, and the exhaust branch are disconnected. This allows the engine exhaust gas to bypass the particulate filter located in the second exhaust branch, reducing fuel consumption in hybrid vehicles; and the number of particulate matter in the exhaust gas is less than or equal to the set threshold, meeting industry regulations on particulate matter in engine exhaust emissions. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 One of the structural block diagrams of the engine exhaust gas treatment system for a hybrid vehicle provided in the embodiments of this application;
[0031] Figure 2 A flowchart illustrating a method for treating engine exhaust gas in a hybrid vehicle as provided in an embodiment of this application;
[0032] Figure 3 A second structural block diagram of the engine exhaust gas treatment system for a hybrid vehicle provided in an embodiment of this application;
[0033] Figure 4 The third structural block diagram of the engine exhaust gas treatment system for a hybrid vehicle provided in this application embodiment;
[0034] Figure 5 This is a functional block diagram of the engine exhaust gas treatment device for a hybrid vehicle provided in an embodiment of this application. Detailed Implementation
[0035] Embodiments of the present disclosure will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the disclosure. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of the present disclosure.
[0036] The accompanying drawings illustrate various structural schematics according to embodiments of the present disclosure. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.
[0037] In the context of this disclosure, when a layer / element is referred to as being "above" another layer / element, the layer / element may be directly above the other layer / element, or there may be an intermediate layer / element between them. Additionally, if a layer / element is "above" another layer / element in one orientation, then when the orientation is reversed, the layer / element may be "below" the other layer / element.
[0038] Explanation of technical terms used in this application:
[0039] Particulate filter: The basic working principle of a particulate filter (DPF) is that it can adsorb soot particles onto a filter made of metal fiber felt through a densely packed bag filter inside. When the amount of particles adsorbed reaches a certain level, the burner at the tail end will automatically ignite and burn the adsorbed soot particles into carbon dioxide that is harmless to the human body and then discharged.
[0040] Transient air-fuel ratio control of an engine: refers to the process in which the mass ratio of air to fuel in the air-fuel mixture changes significantly under unstable operating conditions (such as acceleration, deceleration, sudden load changes, etc.).
[0041] Three-way catalytic converter (TWC): It is the core component of the exhaust aftertreatment system of gasoline engine. Its function is to convert the three main harmful pollutants in exhaust gas—carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx)—into harmless carbon dioxide (CO2), water (H2O) and nitrogen (N2) through catalytic oxidation-reduction reactions, thereby significantly reducing exhaust emission pollution.
[0042] The technical solutions of this application and how they solve the aforementioned technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0043] This application provides a method for treating engine exhaust gas in a hybrid vehicle, applied to an engine exhaust gas treatment system for a hybrid vehicle. In this application embodiment, the hybrid vehicle is a range-extended hybrid vehicle. Figure 1 As shown, the system provided in this embodiment includes a parameter acquisition module 11, a main controller 8, a particulate filter 6, an air intake 3, a first exhaust branch 1, a second exhaust branch 2, a first switching switch assembly 5, a second switching switch assembly 12, and an exhaust port 7. The first exhaust branch 1 and the second exhaust branch 2 are connected in parallel between the air intake 3 and the exhaust port 7. The particulate filter 6 is disposed in the second exhaust branch 2. The main controller 8 may be, but is not limited to, an electronic control unit (ECU) of a hybrid vehicle; the particulate filter 6 may be, but is not limited to, a gasoline engine particulate filter 6. Figure 2 As shown, the method provided in this application embodiment includes:
[0044] S201: Parameter acquisition module 11 acquires operating status parameters associated with the engine of the hybrid vehicle.
[0045] S202: The main controller 8 determines whether the hybrid vehicle's engine is under the target operating condition based on the operating status parameters. If not, it executes S203. Specifically, when the engine is under the target operating condition, the amount of particulate matter in the emitted exhaust gas exceeds a set threshold.
[0046] In some implementations, the parameter acquisition module 11 includes a temperature sensor, and the operating status parameters associated with the hybrid vehicle's engine include the temperature of the coolant used to cool the engine, acquired by the temperature sensor. In this case, S202 can be specifically implemented as follows: when the coolant temperature is lower than a set temperature threshold (e.g., 80 degrees Celsius), the main controller 8 indicates that the engine is in a cold start condition. Due to the wet wall effect, fuel evaporation is incomplete, and the engine produces multiple types of particulate matter, with a large quantity of each type. Therefore, it is determined that the hybrid vehicle's engine is in the target operating condition.
[0047] Furthermore, if it is determined that the coolant temperature is higher than the set temperature threshold (e.g., 80 degrees Celsius), it indicates that the engine has exited the cold start condition and is in the warm-up condition. At this time, the amount of particulate matter generated by the engine is relatively small, thereby controlling the first switching component 5 to switch from the second open / closed state to the first open / closed state, and controlling the second switching component 12 to switch from the second open / closed state to the first open / closed state.
[0048] In other embodiments, the parameter acquisition module 11 includes a speed sensor, a torque sensor, or a power acquisition module. The operating status parameters associated with the hybrid vehicle's engine include: the engine speed acquired by the speed sensor, the engine torque acquired by the torque sensor, and the engine power acquired by the power acquisition module. In this case, S202 can be specifically implemented as follows: if the main controller 8 determines that the engine is in a transient control condition of the air-fuel ratio within a preset time period (e.g., 4 seconds), or the engine torque variance is greater than a set first variance threshold, or the engine power variance is greater than a set third variance threshold, then the engine is in a target operating condition. For example, the engine speed variance indicates that the fluctuation range of each engine speed within the preset time period is greater than or equal to 2%, or the engine torque variance indicates that the fluctuation range of each engine torque within the preset time period is greater than or equal to 2%, or the engine power variance indicates that the fluctuation range of each engine power within the preset time period is greater than or equal to 2%, thus determining that the hybrid vehicle's engine is in the target operating condition.
[0049] S203: The main controller controls the first switching component 5 to switch from the first open / closed state to the second open / closed state, and controls the second switching component 12 to switch from the first open / closed state to the second open / closed state.
[0050] Specifically, when both the first switching component 5 and the second switching component 12 are in the first open / closed state, the air intake 3, the second exhaust branch 2, and the exhaust port 7 are sequentially connected, while the air intake 3, the first exhaust branch 1, and the exhaust branch are not connected. That is to say, when the engine is determined to be in the target operating condition, it indicates that the particulate matter content in the exhaust gas produced by the engine is relatively high. Therefore, by controlling both the first switching component 5 and the second switching component 12 to be in the first open / closed state, the exhaust gas produced by the engine can be treated by the particulate filter 6 in the second exhaust branch 2, thus ensuring that the particulate matter content in the exhaust gas emitted by the hybrid vehicle meets industry regulations.
[0051] When both the first switching assembly 5 and the second switching assembly 12 are in the second open / closed state, the intake port 3, the first exhaust branch 1, and the exhaust port 7 are sequentially connected, while the intake port 3, the second exhaust branch 2, and the exhaust branch are not connected. That is to say, when it is determined that the engine is not in the target operating condition, it indicates that the particulate matter content in the exhaust gas produced by the engine is low, and the particulate matter content in the exhaust gas produced by the engine meets industry regulations. Therefore, by controlling both the first switching assembly 5 and the second switching assembly 12 to be in the second open / closed state, the exhaust gas produced by the engine can be directly discharged to the exhaust port 7 through the first exhaust branch 1.
[0052] Specifically, the system provided in this application embodiment also includes a switch control module 9. The main controller 8 can notify the switch control module 9 to control the first switching switch component 5 and the second switching switch component 12 to be in the second open / closed state; or notify the switch control module 9 to control the first switching switch component 5 and the second switching switch component 12 to be in the first open / closed state.
[0053] It should be noted that in the above embodiments, the first switching component 5 can be a first single-pole double-throw switch. Specifically, the first single-pole double-throw switch is located near the air inlet 3, with its stationary contact situated at the intersection of the first inner wall of the first exhaust branch 1 and the first inner wall of the second exhaust branch 2. Its first moving contact is located on the second inner wall of the first exhaust branch 1, and its second moving contact is located on the second inner wall of the second exhaust branch 2. Similarly, the second switching component 12 can be a second single-pole double-throw switch, located near the exhaust outlet 7. Its stationary contact is situated at the intersection of the first inner wall of the first exhaust branch 1 and the first inner wall of the second exhaust branch 2. Its first moving contact is located on the second inner wall of the first exhaust branch 1, and its second moving contact is located on the second inner wall of the second exhaust branch 2.
[0054] Understandably, such as Figure 3As shown, when the stationary contact of the first single-pole double-throw switch is connected to the second moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the second moving contact of the second single-pole double-throw switch, the first and second single-pole double-throw switches are in the second open / closed state. Figure 4 As shown, when the stationary contact of the first single-pole double-throw switch is connected to the first moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the first moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the first open / closed state.
[0055] In addition, the exhaust port 7 is also equipped with a three-way catalytic converter 10, which can effectively eliminate harmful substances in the exhaust gas, so that the exhaust gas emitted by the hybrid vehicle can further meet the emission regulations.
[0056] In summary, the exhaust gas treatment method for a hybrid vehicle engine provided in this application embodiment allows the main controller 8 to determine whether the hybrid vehicle's engine is under a target operating condition based on operating status parameters. Specifically, when the engine is under the target operating condition, the number of particulate matter in the emitted exhaust gas exceeds a set threshold.
[0057] When the main controller 8 determines that the engine is not operating under target conditions, it indicates that the number of particulate matter in the exhaust gas is less than or equal to a set threshold (meeting industry-mandated limits on particulate matter emissions). It then controls the first switching assembly 5 to switch from a first open / closed state to a second open / closed state, and controls the second switching assembly 12 to switch from the first open / closed state to the second open / closed state. When both the first switching assembly 5 and the second switching assembly 12 are in the second open / closed state, the intake port 3, the first exhaust branch 1, and the exhaust port 7 are sequentially connected, while the intake port 3, the second exhaust branch 2, and the exhaust branch are not connected. This allows the engine exhaust gas to bypass the particulate filter 6 located in the second exhaust branch 2, reducing fuel consumption in hybrid vehicles and saving costs; and the number of particulate matter in the exhaust gas is less than or equal to the set threshold, meeting industry regulations on particulate matter in engine exhaust gases.
[0058] like Figure 5As shown, this application provides an engine exhaust gas treatment device for hybrid vehicles, configured in the main controller 8 of the hybrid vehicle's engine exhaust gas treatment system. It should be noted that the basic principle and technical effects of the hybrid vehicle engine exhaust gas treatment device provided in this application embodiment are the same as those in the above embodiments. For the sake of brevity, any parts not mentioned in this application embodiment can be referred to the corresponding content in the above embodiments. Specifically, the system provided in this application embodiment also includes a parameter acquisition module 11, a particulate filter 6, an air inlet 3, a first exhaust branch 1, a second exhaust branch 2, a first switching switch assembly 5, a second switching switch assembly 12, and an exhaust port 7. The first exhaust branch 1 and the second exhaust branch 2 are connected in parallel between the air inlet 3 and the exhaust port 7, and the particulate filter 6 is disposed in the second exhaust branch 2. The device in this application embodiment includes an information receiving unit, a target operating condition determination unit, and a state switching unit, wherein...
[0059] The information receiving unit is used to collect operating status parameters associated with the engine of the hybrid vehicle.
[0060] The target operating condition determination unit is used to determine whether the engine of the hybrid vehicle is in a target operating condition based on the operating status parameters. When the engine is in the target operating condition, the number of particulate matter in the exhaust gas is greater than a set threshold.
[0061] The state switching unit is used to control the first switching switch assembly 5 to switch from a first open / closed state to a second open / closed state and the second switching switch assembly 12 to switch from a first open / closed state to a second open / closed state when it is determined that the engine is not in the target operating condition. When both the first switching switch assembly 5 and the second switching switch assembly 12 are in the first open / closed state, the air intake 3, the second exhaust branch 2, and the exhaust port 7 are sequentially connected, and the air intake 3, the first exhaust branch 1, and the exhaust branch are not connected. When both the first switching switch assembly 5 and the second switching switch assembly 12 are in the second open / closed state, the air intake 3, the first exhaust branch 1, and the exhaust port 7 are sequentially connected, and the air intake 3, the second exhaust branch 2, and the exhaust branch are not connected.
[0062] In some embodiments, the parameter acquisition module 11 includes a temperature sensor, and the operating status parameters associated with the hybrid vehicle's engine include the temperature of the coolant used to cool the engine, acquired by the temperature sensor. The target operating condition determination unit is specifically used to determine that the hybrid vehicle's engine is in a target operating condition when the coolant temperature is below a set temperature threshold.
[0063] In some embodiments, the state switching unit is further configured to control the first switching component 5 to switch from the second open / closed state to the first open / closed state and control the second switching component 12 to switch from the second open / closed state to the first open / closed state when it is determined that the temperature of the coolant is higher than a set temperature threshold.
[0064] In other embodiments, the parameter acquisition module 11 includes a speed sensor, a torque sensor, or a power acquisition module. The operating status parameters associated with the hybrid vehicle's engine include: the engine speed acquired by the speed sensor, the engine torque acquired by the torque sensor, and the engine power acquired by the power acquisition module. The target operating condition determination unit is specifically used to determine that the hybrid vehicle's engine is in a target operating condition when the variance of the engine speed is greater than a set first variance threshold, or the variance of the engine torque is greater than a set second variance threshold, or the variance of the engine power is greater than a set third variance threshold within a preset time period.
[0065] Please refer to Figure 1 This application also provides an engine exhaust gas treatment system for a hybrid vehicle, including a parameter acquisition module 11, a main controller 8, a particulate filter 6, an air intake 3, a first exhaust branch 1, a second exhaust branch 2, a first switching assembly 5, a second switching assembly 12, and an exhaust port 7. The first exhaust branch 1 and the second exhaust branch 2 are connected in parallel between the air intake 3 and the exhaust port 7. The particulate filter 6 is disposed in the second exhaust branch 2. The main controller 8 is used to execute the method provided in the above embodiments of this application.
[0066] In some embodiments, the first switching component 5 is a first single-pole double-throw switch, wherein the first single-pole double-throw switch is located near the air inlet 3, the stationary contact of the first single-pole double-throw switch is located at the intersection of the first inner wall of the first exhaust branch 1 and the first inner wall of the second exhaust branch 2, the first moving contact of the first single-pole double-throw switch is located on the second inner wall of the first exhaust branch 1, and the second moving contact of the first single-pole double-throw switch is located on the second inner wall of the second exhaust branch 2.
[0067] The second switching component 12 is a second single-pole double-throw switch. The second single-pole double-throw switch is located near the exhaust port 7. The stationary contact of the second single-pole double-throw switch is located at the intersection of the first inner wall of the first exhaust branch 1 and the first inner wall of the second exhaust branch 2. The first moving contact of the second single-pole double-throw switch is located on the second inner wall of the first exhaust branch 1, and the second moving contact of the second single-pole double-throw switch is located on the second inner wall of the second exhaust branch 2.
[0068] When the stationary contact of the first single-pole double-throw switch is connected to the second moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the second moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the second open / closed state.
[0069] When the stationary contact of the first single-pole double-throw switch is connected to the first moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the first moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the first open / closed state.
[0070] In addition, this application also provides a hybrid vehicle equipped with the engine exhaust gas treatment system of the hybrid vehicle provided in the above embodiments of this application.
[0071] In addition, this application embodiment also provides a storage medium storing a computer program, which, when executed by the main controller, causes the main controller to perform the method provided in the above embodiments of this application.
[0072] In addition, this application also provides a computer program product, including a computer program that, when run, causes a hybrid vehicle to perform the method provided in the above embodiments of this application.
[0073] The above description does not provide detailed technical specifications regarding the structure of each layer. However, those skilled in the art should understand that layers and regions of desired shapes can be formed using various technical means. Furthermore, to form the same structure, those skilled in the art can also design methods that are not entirely identical to those described above. Additionally, although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be advantageously combined.
[0074] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0075] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A method for treating engine exhaust gas of a hybrid vehicle, characterized in that, An engine exhaust gas treatment system for hybrid vehicles, the system comprising a parameter acquisition module, a main controller, a particulate filter, an air intake, a first exhaust branch, a second exhaust branch, a first switching assembly, a second switching assembly, and an exhaust port, wherein the first exhaust branch and the second exhaust branch are connected in parallel between the air intake and the exhaust port, and the particulate filter is disposed in the second exhaust branch; the method includes: The parameter acquisition module collects operating status parameters associated with the engine of the hybrid vehicle; The main controller determines whether the engine of the hybrid vehicle is in the target operating condition based on the operating status parameters. When the engine is in the target operating condition, the number of particulate matter in the exhaust gas is greater than a set threshold. When the main controller determines that the engine is not in the target operating condition, it controls the first switching switch assembly to switch from a first open / closed state to a second open / closed state, and controls the second switching switch assembly to switch from the first open / closed state to the second open / closed state. Specifically, when both the first and second switching switch assemblies are in the first open / closed state, the air intake, the second exhaust branch, and the exhaust port are sequentially connected, and the air intake, the first exhaust branch, and the exhaust branch are not connected. When both the first and second switching switch assemblies are in the second open / closed state, the air intake, the first exhaust branch, and the exhaust port are sequentially connected, and the air intake, the second exhaust branch, and the exhaust branch are not connected.
2. The method according to claim 1, characterized in that, The parameter acquisition module includes a temperature sensor, and the operating status parameters associated with the engine of the hybrid vehicle include: the temperature of the coolant used to cool the engine, which is acquired by the temperature sensor.
3. The method according to claim 2, characterized in that, The main controller determines whether the hybrid vehicle's engine is in the target operating condition based on the operating status parameters, including: When the temperature of the coolant is lower than a set temperature threshold, the main controller determines that the engine of the hybrid vehicle is in the target operating condition.
4. The method according to claim 3, characterized in that, After determining that the engine of the hybrid vehicle is in the target operating condition, the method further includes: When it is determined that the temperature of the coolant is higher than a set temperature threshold, the first switching component is controlled to switch from the second open / closed state to the first open / closed state, and the second switching component is controlled to switch from the second open / closed state to the first open / closed state.
5. The method according to claim 1, characterized in that, The parameter acquisition module includes a speed sensor, a torque sensor, or a power acquisition module. The operating status parameters associated with the engine of the hybrid vehicle include: the engine speed acquired by the speed sensor, the engine torque acquired by the torque sensor, and the engine power acquired by the power acquisition module.
6. The method according to claim 5, characterized in that, The main controller determines whether the hybrid vehicle's engine is in the target operating condition based on the operating status parameters, including: If the main controller determines that the engine of the hybrid vehicle is in a target operating condition when the variance of the engine speed is greater than a set first variance threshold, or the variance of the engine torque is greater than a set second variance threshold, or the variance of the engine power is greater than a set third variance threshold within a preset time period.
7. An engine exhaust gas treatment system for a hybrid vehicle, characterized in that, The device includes a parameter acquisition module, a main controller, a particulate trap, an air inlet, a first exhaust branch, a second exhaust branch, a first switching switch assembly, a second switching switch assembly, and an exhaust port. The first exhaust branch and the second exhaust branch are connected in parallel between the air inlet and the exhaust port. The particulate trap is disposed in the second exhaust branch. The main controller is used to execute the method described in any one of claims 1-6.
8. The system according to claim 7, characterized in that, The first switching component is a first single-pole double-throw switch, wherein the first single-pole double-throw switch is located near the air inlet, the stationary contact of the first single-pole double-throw switch is located at the intersection of the first inner wall of the first exhaust branch and the first inner wall of the second exhaust branch, the first moving contact of the first single-pole double-throw switch is located on the second inner wall of the first exhaust branch, and the second moving contact of the first single-pole double-throw switch is located on the second inner wall of the second exhaust branch; The second switching component is a second single-pole double-throw switch, wherein the second single-pole double-throw switch is located near the exhaust port, the stationary contact of the second single-pole double-throw switch is located at the intersection of the first inner wall of the first exhaust branch and the first inner wall of the second exhaust branch, the first moving contact of the second single-pole double-throw switch is located on the second inner wall of the first exhaust branch, and the second moving contact of the second single-pole double-throw switch is located on the second inner wall of the second exhaust branch; When the stationary contact of the first single-pole double-throw switch is connected to the second moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the second moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the second open / closed state. When the stationary contact of the first single-pole double-throw switch is connected to the first moving contact of the first single-pole double-throw switch, and the stationary contact of the second single-pole double-throw switch is connected to the first moving contact of the second single-pole double-throw switch, the first single-pole double-throw switch and the second single-pole double-throw switch are in the first open / closed state.
9. The system according to claim 7, characterized in that, The exhaust port is also equipped with a three-way catalytic converter.
10. A hybrid vehicle, characterized in that, The hybrid vehicle is equipped with an engine exhaust gas treatment system as described in any one of claims 7-9.