Control method and system for tail gas emission of extended-range vehicle, electronic equipment and readable storage medium
By setting up an electric heating catalytic device in an extended-range vehicle, monitoring the battery pack capacity and temperature in real time, and dynamically adjusting the heating state, the problem of low catalyst efficiency in low temperature environments is solved, and more efficient exhaust purification and environmental performance improvement is achieved.
Patent Information
- Application Number
- CN202411466708.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-01-03
AI Technical Summary
The catalysts of existing extended-range vehicles cannot effectively catalyze exhaust gas in low-temperature environments, resulting in poor emission effects.
An electric heat catalytic device is installed between the engine and the exhaust tailpipe. By monitoring the battery pack capacity and the catalytic device temperature in real time, the working state of the heating unit is dynamically adjusted to ensure that the catalytic unit maintains the optimal working temperature and improves catalytic efficiency.
Effectively reduce the content of harmful substances in the exhaust gas, improve the environmental performance of the vehicle, extend the battery life of the battery pack, and enhance the reliability and stability of the system.
Smart Images
Figure CN119244349A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of vehicle emission technology, and specifically relates to a method, system, electronic device and readable storage medium for controlling exhaust emissions of a range-extended vehicle. Background Art
[0002] Automobile emission pollutants include many aspects, including CH, NOx, PN, etc. Among them, NOx and PN are important forms of automobile emissions. Therefore, it is very important to use some devices and methods to reduce NOx and PN during the development stage of the automobile.
[0003] In the prior art, when controlling exhaust emissions, the extended-range vehicle model simply sets a catalyst between the engine and the exhaust tail pipe, so that the exhaust gas passes through the catalyst and then is discharged from the exhaust tail pipe, thereby achieving the effect of controlling emissions. Although this method can control emissions, the heat required for catalysis by the catalyst comes entirely from the heat generated by the operation of the vehicle. In this way, in an environment with low temperatures, the catalyst cannot achieve its catalytic effect. Therefore, there is an urgent need for a method for controlling exhaust emissions of extended-range vehicles, which can improve the emission control effect while the entire vehicle can operate normally. Summary of the invention
[0004] The purpose of the embodiments of the present application is to provide a control method, system, electronic device and readable storage medium for exhaust emissions of extended-range vehicles, which can solve the technical problem of poor emission effects in the prior art.
[0005] In order to solve the above technical problems, this application is implemented as follows:
[0006] In a first aspect, an embodiment of the present application provides a method for controlling exhaust emissions of a range-extended vehicle, the method comprising:
[0007] Arranging an electrothermal catalytic device between the engine and the exhaust tail pipe of the target vehicle;
[0008] Obtaining the power of the target vehicle battery pack and the temperature of the electrothermal catalytic device once every first preset time;
[0009] If the battery pack power is less than a first preset value, the range extender sends a start request to the vehicle controller of the target vehicle, and the range extender starts;
[0010] After the vehicle controller receives the range extender start completion signal, if the battery pack power is less than a first preset value and greater than or equal to a second preset value, the vehicle controller determines whether to heat the electrothermal catalytic device according to the temperature of the electrothermal catalytic device;
[0011] If the battery pack power is greater than or equal to the first preset value, the vehicle controller determines whether to heat the electrothermal catalytic device according to the temperature of the electrothermal catalytic device;
[0012] After the vehicle controller receives the heating completion signal, if the battery pack power is greater than or equal to the first preset value and less than a third preset value, the range extender sends a start request to the vehicle controller, and the range extender starts.
[0013] As an optional implementation of the first aspect of the present application, the electrothermal catalytic device includes a first oxygen sensor, a second oxygen sensor, a heating unit, and a catalytic unit; the arrangement order from the engine to the exhaust tail pipe is the first oxygen sensor, the heating unit, the catalytic unit, and the second oxygen sensor; the heating unit is used to heat the catalytic unit.
[0014] According to the above optional implementation mode, by setting the first oxygen sensor and the second oxygen sensor, the system can monitor the changes in the exhaust gas composition in real time, so as to more accurately control the working conditions of the heating unit and the catalytic unit to ensure that the exhaust gas is fully catalytically treated; the heating unit can quickly heat the catalytic unit to the optimal working temperature, so as to improve the catalytic efficiency and reduce the content of harmful substances in the exhaust gas; by real-time monitoring of the battery pack power and the working condition of the electric heating catalytic device, the system can more reasonably allocate energy, avoid unnecessary energy waste and improve vehicle reliability; through real-time monitoring, the system can promptly detect problems such as poor catalytic effect and insufficient battery power.
[0015] As an optional implementation of the first aspect of the present application, the vehicle controller determines whether the electrothermal catalytic device is heated according to the temperature of the electrothermal catalytic device, specifically:
[0016] If the temperature of the catalytic unit is greater than or equal to the target temperature, the catalytic unit does not send a heating request to the vehicle controller, and the heating unit does not start heating the catalytic unit;
[0017] If the temperature of the catalytic unit is lower than the target temperature, the catalytic unit sends a heating request to the vehicle controller, and the heating unit starts heating the catalytic unit.
[0018] According to the above optional implementation mode, by real-time monitoring the temperature of the catalytic unit and starting the heating unit as needed, when the battery pack power is greater than or equal to the second preset value, the system can ensure that the catalytic unit maintains the optimal operating temperature range, thereby improving the catalytic efficiency and reducing exhaust emissions; the heating unit is started only when needed to avoid unnecessary energy waste, which helps to extend the battery life; when the catalytic unit operates at the optimal operating temperature, it can more effectively catalyze harmful substances in the exhaust gas, thereby reducing the emission level of the vehicle; through precise temperature control and intelligent heating management, the system can promptly detect and solve the problem of low catalytic efficiency caused by too low temperature of the catalytic unit, thereby improving the reliability of the entire electric catalytic device and the vehicle.
[0019] As an optional implementation of the first aspect of the present application, after the heating unit starts to heat the catalytic unit, the vehicle controller determines the difference between the actual temperature of the catalytic unit and the target temperature;
[0020] If the difference is greater than or equal to a fourth preset value, the vehicle controller controls the heating unit to heat the catalytic unit at a high speed according to a first preset power;
[0021] If the difference is less than the fourth preset value, the vehicle controller controls the heating unit to slowly heat the catalytic unit according to the second preset power.
[0022] According to the above optional implementation mode, by dynamically adjusting the power of the heating unit according to the difference between the actual temperature of the catalytic unit and the target temperature, the system can more accurately control the temperature of the catalytic unit to avoid overheating or underheating; when the temperature difference is large, high-speed heating can be used to quickly increase the temperature of the catalytic unit and shorten the heating time; when the temperature difference is small, slow heating can be used to reduce energy waste and improve heating efficiency; precise heating control helps the catalytic unit reach the optimal operating temperature in a shorter time, thereby more effectively catalyzing harmful substances in the exhaust gas and further reducing the emission level of the vehicle; by optimizing the heating control strategy, the system can respond to temperature changes more quickly and reduce waiting time during the heating process.
[0023] As an optional implementation of the first aspect of the present application, if the battery pack power is less than the second preset value, the vehicle controller does not determine whether the electrothermal catalytic device is heated; if the battery pack power is greater than the third preset value, the vehicle controller does not start the range extender of the target vehicle.
[0024] According to the above optional implementation mode, by judging whether it is necessary to heat the electrothermal catalytic device and whether it is necessary to start the range extender according to the battery pack power, the system can manage the battery power more effectively, avoiding using the battery pack power to power the heating unit when the power is insufficient, which may cause the remaining power of the battery pack to be unable to start the range extender, resulting in vehicle operation problems; avoiding unnecessary start-up of the range extender when the battery power is sufficient can reduce energy consumption and emissions and improve the energy efficiency of the system; through reasonable heating control and range extender start-up strategies, the system can reduce emissions and improve environmental protection performance while ensuring the normal operation of the vehicle.
[0025] As an optional implementation of the first aspect of the present application, the catalytic unit includes a three-way catalyst.
[0026] According to the above optional implementation mode, the three-way catalytic converter is the most important external purification device in the automobile exhaust purification system. It can convert harmful gases such as carbon monoxide, hydrocarbons and nitrogen oxides emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. Combined with the characteristics of the three-way catalytic converter, the vehicle controller can achieve the exhaust purification goal more efficiently while ensuring the vehicle's driving ability by precisely controlling the heating process, optimizing power management, improving user experience and intelligence level.
[0027] As an optional implementation manner of the first aspect of the present application, the first preset value is 10%, the second preset value is 5%, and the third preset value is 20%.
[0028] In a second aspect, an embodiment of the present application provides a control system for exhaust emissions of a range-extended vehicle, the system comprising:
[0029] A first acquisition module, acquiring the battery pack power and catalyst temperature of the target vehicle once at a preset time interval;
[0030] A first judgment module, judging the difference between the power of the battery pack and a first preset value;
[0031] The first processing module directly starts the range extender of the target vehicle if the battery pack power is less than the first preset value. After the range extender is started, if the battery pack power is greater than or equal to the second preset value, it is determined whether the heating unit heats the catalyst; if the battery pack power is greater than or equal to the first preset value, it is determined whether the heating unit heats the catalyst; when the vehicle controller receives a heating completion signal, the range extender is started;
[0032] A second judgment module is used to judge the difference between the catalyst temperature and a preset target temperature;
[0033] The second processing module, if the catalyst temperature is greater than or equal to the target temperature, the heating unit does not start heating the catalyst; if the catalyst temperature is less than the target temperature, the heating unit starts heating the catalyst;
[0034] A first calculation module, calculating a difference between the catalyst temperature and the target temperature;
[0035] a third processing module, heating the catalyst at a high speed according to a first preset power if the difference calculated by the first calculation module is greater than or equal to a fourth preset value; and heating the catalyst at a second preset power if the difference is less than the fourth preset value;
[0036] The output execution module outputs the results of executing the first processing module, the second processing module and the third processing module.
[0037] According to a control system for exhaust emissions of extended-range vehicles provided in the second aspect of the present application, the system achieves efficient energy management by accurately monitoring the battery pack power and catalyst temperature, and dynamically adjusting the operating states of the range extender and the heating unit according to actual conditions; by timely heating the catalyst, it is ensured that it operates at the optimal operating temperature, thereby more effectively catalyzing harmful substances in the exhaust gas and reducing emission levels; the dynamic heating power adjustment strategy can reduce unnecessary energy consumption and heat accumulation, and help extend the service life of the catalyst and the heating unit; the system can automatically adjust the operation of the range extender and the heating unit according to the vehicle status and needs, reducing the driver's intervention and operation complexity, and improving the driving experience; through continuous monitoring and dynamic adjustment, the system can promptly detect and deal with potential battery shortages, abnormal catalyst temperatures, etc., thereby enhancing the reliability and stability of the system.
[0038] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.
[0039] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.
[0040] In the embodiments of the present application, by catalytically treating the exhaust gas through an electrothermal catalytic device, the emission of harmful substances in the exhaust gas can be effectively reduced, and the environmental performance of the vehicle can be improved; by real-time monitoring of the battery pack power and starting the range extender according to the power situation, the battery power can be used more reasonably; when the battery pack power is insufficient, the vehicle's range extender is started first to avoid the situation where the vehicle controller still uses the remaining power of the battery pack to power and heat the electrothermal catalytic device when the battery pack power is too low, resulting in the battery pack power being exhausted, thereby making it impossible for the target vehicle to drive normally; by real-time monitoring of the temperature of the electrothermal catalytic device and the remaining power of the battery pack, and reasonably using the remaining power of the battery pack to control the heating of the electrothermal catalytic device, it can be ensured that the electrothermal catalytic device remains in the best working state when the vehicle is operating normally, thereby improving the vehicle's emission performance and operating stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] Figure 1 It is a flow chart of a method for controlling exhaust emissions of an extended-range vehicle provided in some embodiments of the present application. DETAILED DESCRIPTION
[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0043] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.
[0044] In conjunction with the accompanying drawings, a method, system, electronic device and readable storage medium for controlling exhaust emissions of an extended-range vehicle provided in an embodiment of the present application are described in detail through specific embodiments and their application scenarios.
[0045] Example
[0046] A method for controlling exhaust emissions of a range-extended vehicle comprises the following steps:
[0047] S100: Arranging an electrothermal catalytic device between an engine and an exhaust tail pipe of a target vehicle;
[0048] Further, the electrothermal catalytic device includes a first oxygen sensor, a second oxygen sensor, a heating unit, and a catalytic unit;
[0049] Specifically, the arrangement order of the electrothermal catalytic device from the engine to the exhaust tail pipe is the first oxygen sensor, the heating unit, the catalytic unit and the second oxygen sensor; the heating unit is used for heating the catalytic unit.
[0050] It should be understood that, based on the above-mentioned feature definition, the first oxygen sensor is located between the engine and the heating unit, and is used to monitor the oxygen content in the exhaust gas before entering the catalytic unit; the heating unit is located after the first oxygen sensor and before the catalytic unit, and is used to heat the catalytic unit when necessary to improve its catalytic efficiency; the catalytic unit is located after the heating unit and is the core part of the electrothermal catalytic device, and is used to catalyze harmful substances in the exhaust gas and reduce emissions; the second oxygen sensor is located after the catalytic unit and before the exhaust tail pipe, and is used to monitor the oxygen content in the exhaust gas after being treated by the catalytic unit to evaluate the catalytic effect; the system continues to obtain the battery pack power and the temperature of the electrothermal catalytic device at intervals of the first preset time; based on the comparison result of the battery pack power and the preset value, it is decided whether to start the range extender; the vehicle controller determines whether the catalytic unit needs to be heated based on the temperature of the electrothermal catalytic device (especially the temperature of the catalytic unit); if heating is required, the vehicle controller controls the heating unit to work and increase the temperature of the catalytic unit to the optimal catalytic range; the second oxygen sensor monitors the exhaust gas composition after being treated by the catalytic unit, and the vehicle controller evaluates the catalytic effect based on these data; if the catalytic effect is not ideal, the vehicle controller may adjust the working state of the heating unit or take other measures.
[0051] It should be noted that, by setting up the first oxygen sensor and the second oxygen sensor, the system can monitor the changes in the exhaust gas composition in real time, so as to more accurately control the working status of the heating unit and the catalytic unit, and ensure that the exhaust gas is fully catalytically treated; the heating unit can quickly heat the catalytic unit to the optimal working temperature, so as to improve the catalytic efficiency and reduce the content of harmful substances in the exhaust gas; by real-time monitoring of the battery pack power and the working status of the electric catalytic device, the system can more reasonably allocate energy, avoid unnecessary energy waste and improve vehicle reliability; through real-time monitoring, the system can promptly detect problems such as poor catalytic effect and insufficient battery power.
[0052] Still further, the catalytic unit includes a three-way catalyst.
[0053] It should be understood that, based on the above-mentioned feature definitions, the three-way catalytic converter is the most important external purification device in the automobile exhaust purification system. It can convert harmful gases such as carbon monoxide, hydrocarbons and nitrogen oxides emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. Combined with the characteristics of the three-way catalytic converter, the vehicle controller can achieve the exhaust purification goal more efficiently while ensuring the vehicle's driving ability by precisely controlling the heating process, optimizing power management, and improving user experience and intelligence levels.
[0054] S200: Obtaining the target vehicle battery pack power and the temperature of the electric heating catalytic device once every first preset time;
[0055] Specifically, the first preset time may be 1 minute, 2 minutes or 3 minutes.
[0056] It should be understood that, based on the above-mentioned feature limitations, obtaining the target vehicle battery pack power and the temperature of the electrothermal catalyst device every 1 minute, 2 minutes or 3 minutes is to update the data of the target vehicle battery pack power and the temperature of the electrothermal catalyst device so that the vehicle controller can make timely control adjustments based on the above data.
[0057] S300: If the battery pack power is less than the first preset value, the range extender sends a start request to the vehicle controller of the target vehicle, and the range extender starts;
[0058] S400: After the vehicle controller receives the range extender start completion signal, if the battery pack power is less than the first preset value and greater than or equal to the second preset value, the vehicle controller determines whether to heat the electric catalytic device according to the temperature of the electric catalytic device;
[0059] S500: If the battery pack power is greater than or equal to the first preset value, the vehicle controller determines whether to heat the electric catalytic device according to the temperature of the electric catalytic device;
[0060] Furthermore, in S400 and S500, the vehicle controller determines whether the electric catalytic device is heated according to the temperature of the electric catalytic device, specifically:
[0061] If the temperature of the catalyst unit is greater than or equal to the target temperature, the catalyst unit does not send a heating request to the vehicle controller, and the heating unit does not start heating the catalyst unit;
[0062] If the temperature of the catalyst unit is lower than the target temperature, the catalyst unit sends a heating request to the vehicle controller, and the heating unit starts heating the catalyst unit.
[0063] It should be understood that, based on the above-mentioned feature definition, the vehicle controller continuously monitors the temperature of the catalytic unit in the electrothermal catalytic device; if the temperature of the catalytic unit is greater than or equal to the preset target temperature (which is the temperature required for the catalytic unit to achieve optimal catalytic efficiency), the catalytic unit will not send a heating request to the vehicle controller; at this time, the heating unit remains in a closed state and does not heat the catalytic unit; if the temperature of the catalytic unit is less than the target temperature, the catalytic unit (or more accurately, the temperature monitoring module in the electrothermal catalytic device) will send a heating request to the vehicle controller; after receiving the heating request, the vehicle controller will immediately start the heating unit; the heating unit starts to heat the catalytic unit until the temperature of the catalytic unit reaches or exceeds the target temperature; during the heating process, the vehicle controller continuously monitors the temperature of the catalytic unit and adjusts the power of the heating unit as needed to ensure that the temperature of the catalytic unit is stable within the target range; when the temperature of the catalytic unit reaches or exceeds the target temperature, the heating unit stops working; the vehicle controller continues to monitor the temperature of the catalytic unit for a period of time to ensure that it remains within the optimal operating temperature range; based on the battery pack power and other vehicle status information, the vehicle controller may decide whether to start the range extender to maintain the battery power or provide additional power support.
[0064] It should be noted that by monitoring the temperature of the catalytic unit in real time and starting the heating unit as needed, when the battery pack power is greater than or equal to the second preset value, the system can ensure that the catalytic unit maintains the optimal operating temperature range, thereby improving the catalytic efficiency and reducing exhaust emissions; the heating unit is started only when needed to avoid unnecessary energy waste, which helps to extend the battery life; when the catalytic unit works at the optimal operating temperature, it can more effectively catalyze harmful substances in the exhaust gas, thereby reducing the vehicle's emission level; through precise temperature control and intelligent heating management, the system can promptly detect and solve the problem of low catalytic efficiency caused by too low a temperature of the catalytic unit, thereby improving the reliability of the entire electric catalytic device and the vehicle.
[0065] Further, after the heating unit starts to heat the catalytic unit, the vehicle controller determines the difference between the actual temperature of the catalytic unit and the target temperature;
[0066] If the difference is greater than or equal to the fourth preset value, the vehicle controller controls the heating unit to heat the catalytic unit at a high speed according to the first preset power;
[0067] If the difference is less than the fourth preset value, the vehicle controller controls the heating unit to slowly heat the catalytic unit according to the second preset power.
[0068] It should be understood that, based on the above-mentioned feature definitions, after the heating unit starts to heat the catalytic unit, the vehicle controller will monitor the actual temperature of the catalytic unit in real time, compare it with the target temperature, and calculate the difference between the two; if the difference between the actual temperature of the catalytic unit and the target temperature is greater than or equal to the fourth preset value (this value indicates that the temperature difference is large and rapid heating is required to reach the target temperature), the vehicle controller will control the heating unit to heat the catalytic unit at a high speed according to the first preset power (higher power); if the difference between the actual temperature of the catalytic unit and the target temperature is less than the fourth preset value (this value indicates that the temperature difference is small and the target temperature can be approached more slowly), the vehicle controller will control the heating unit The catalytic unit is slowly heated according to the second preset power (lower power); during the heating process, the vehicle controller will continuously monitor the actual temperature of the catalytic unit, and dynamically adjust the power of the heating unit according to the difference between the actual temperature and the target temperature; if the actual temperature approaches the target temperature rapidly, the vehicle controller may reduce the power of the heating unit in advance to avoid overheating; if the actual temperature rises slowly, the vehicle controller may temporarily increase the power of the heating unit to speed up the heating process; when the actual temperature of the catalytic unit reaches or exceeds the target temperature, the heating unit stops working; the vehicle controller may continue to monitor the temperature of the catalytic unit for a period of time to ensure that it remains within the optimal operating temperature range.
[0069] It should be noted that by dynamically adjusting the power of the heating unit according to the difference between the actual temperature of the catalytic unit and the target temperature, the system can more accurately control the temperature of the catalytic unit to avoid overheating or underheating; when the temperature difference is large, high-speed heating can be used to quickly increase the temperature of the catalytic unit and shorten the heating time; when the temperature difference is small, slow heating can be used to reduce energy waste and improve heating efficiency; precise heating control helps the catalytic unit reach the optimal operating temperature in a shorter time, thereby more effectively catalyzing harmful substances in the exhaust gas and further reducing the vehicle's emission levels; by optimizing the heating control strategy, the system can respond to temperature changes more quickly and reduce waiting time during the heating process.
[0070] S600: After the vehicle controller receives the heating completion signal, if the battery pack power is greater than or equal to the first preset value and less than the third preset value, the range extender sends a start request to the vehicle controller, and the range extender starts.
[0071] Further, in S400, if the battery pack power is less than the second preset value, the vehicle controller does not determine whether the electric catalytic device is heated; in S600, if the battery pack power is greater than the third preset value, the vehicle controller does not start the range extender of the target vehicle.
[0072] It should be understood that, based on the above-mentioned feature limitations, the vehicle controller continuously monitors the power of the battery pack and makes judgments based on preset thresholds; if the battery pack power is less than the second preset value (this value indicates that the battery power is low and it is necessary to prioritize the basic operation of the vehicle and the power supply of key systems), the vehicle controller will not determine whether the electrothermal catalytic device is heated; this is to avoid the heating unit consuming too much power and affecting the normal operation of the vehicle when the battery power is insufficient; if the battery pack power is greater than the third preset value (this value is higher than the first preset value and the second preset value, indicating that the battery power is relatively sufficient to meet the basic operation of the vehicle and certain additional needs), the vehicle controller will not start the range extender of the target vehicle; this is to extend the service life of the battery pack, reduce the number of starts of the range extender, and reduce operating costs; however, the selection of the third preset value should take into account the vehicle's driving needs, emission requirements, and the battery pack and factors such as the performance of the range extender; when the battery pack power is between the second preset value and the third preset value, the vehicle controller needs to determine whether it is necessary to heat the electrothermal catalytic device and whether it is necessary to start the range extender based on actual conditions; if it is necessary to heat the electrothermal catalytic device and the battery pack power is sufficient to support the heating process (that is, the battery power will not drop below the second preset value), the vehicle controller will heat it according to the heating control strategy described previously; if during or after the heating process, the battery pack power drops to close to or below the second preset value, and the vehicle needs to continue driving, the vehicle controller may consider starting the range extender to replenish the power; the vehicle controller will continuously monitor the battery pack power, the temperature of the electrothermal catalytic device and other status information of the vehicle; based on this information, the vehicle controller will dynamically adjust the heating strategy, the range extender start-up strategy and the control strategy of other related systems to ensure safe, efficient and environmentally friendly operation of the vehicle.
[0073] It should be noted that by judging whether it is necessary to heat the electrocatalytic device and whether it is necessary to start the range extender based on the battery pack power, the system can manage the battery power more effectively, avoiding using the battery pack power to power the heating unit when the power is insufficient, which will result in the remaining power in the battery pack being unable to start the range extender, causing vehicle operation problems; avoiding unnecessary start-up of the range extender when the battery power is sufficient can reduce energy consumption and emissions and improve the energy efficiency of the system; through reasonable heating control and range extender start-up strategies, the system can reduce emissions and improve environmental protection performance while ensuring the normal operation of the vehicle.
[0074] Specifically, the first preset value may be 10%, the second preset value may be 5%, and the third preset value may be 20%.
[0075] According to a method for controlling exhaust emissions of a range-extended vehicle provided in this embodiment, first, an electrothermal catalytic device is installed between the engine and the exhaust tail pipe of the target vehicle, the purpose of which is to catalytically treat the exhaust gas to reduce emission pollution; the system obtains the power of the battery pack of the target vehicle and the temperature of the electrothermal catalytic device once every first preset time (for example, every 1 minute), and this step is to understand the remaining power of the battery pack and the working status of the electrothermal catalytic device in real time; when the power of the battery pack is less than the first preset value, the range extender sends a start request to the vehicle controller, and then the range extender starts, and this step is to charge the battery or provide power through the range extender when the battery power is insufficient to ensure the normal operation of the vehicle; After receiving the start completion signal of the range extender, the vehicle controller will determine whether the electric catalyst device needs to be heated based on its temperature; this judgment will be made if the battery pack power is less than the first preset value but greater than or equal to the second preset value, or if the battery pack power is greater than or equal to the first preset value; heating the electric catalyst device can improve its catalytic efficiency, thereby reducing exhaust emissions; after the electric catalyst device is heated, if the battery pack power is greater than or equal to the first preset value but less than the third preset value, the range extender will again send a start request to the vehicle controller, and then the range extender will start. This step is to provide additional power support through the range extender when the battery power is sufficient but not enough to maintain a long period of operation.
[0076] By catalytically treating exhaust gas through an electrothermal catalytic device, the emission of harmful substances in exhaust gas can be effectively reduced, thereby improving the environmental performance of the vehicle; by real-time monitoring of the battery pack power and starting the range extender according to the power situation, the battery power can be used more reasonably; when the battery pack power is insufficient, the vehicle's range extender is started first to avoid the situation where the vehicle controller still uses the remaining power of the battery pack to power the electrothermal catalytic device when the battery pack power is too low, thereby causing the battery pack power to be exhausted, thereby making it impossible for the target vehicle to drive normally; by real-time monitoring of the temperature of the electrothermal catalytic device and the remaining power of the battery pack, and by reasonably using the remaining power of the battery pack to control the heating of the electrothermal catalytic device, it can be ensured that the electrothermal catalytic device remains in the best working state when the vehicle is operating normally, thereby improving the vehicle's emission performance and operating stability.
[0077] It should be noted that the control method for exhaust emissions of a range-extended vehicle provided in the embodiment of the present application may be executed by a control system for exhaust emissions of a range-extended vehicle, or by a control module in the control system for exhaust emissions of a range-extended vehicle for executing and loading a control method for exhaust emissions of a range-extended vehicle. In the embodiment of the present application, a control system for exhaust emissions of a range-extended vehicle executing and loading a control method for exhaust emissions of a range-extended vehicle is taken as an example to illustrate a control method for exhaust emissions of a range-extended vehicle provided in the embodiment of the present application.
[0078] A control system for exhaust emissions of a range-extended vehicle, comprising:
[0079] The first acquisition module acquires the battery pack power and catalyst temperature of the target vehicle once at a preset time interval;
[0080] A first judgment module, judging the difference between the power of the battery pack and a first preset value;
[0081] The first processing module directly starts the range extender of the target vehicle if the battery pack power is less than the first preset value. After the range extender is started, if the battery pack power is greater than or equal to the second preset value, it is determined whether the heating unit heats the catalyst; if the battery pack power is greater than or equal to the first preset value, it is determined whether the heating unit heats the catalyst; when the vehicle controller receives the heating completion signal, the range extender is started;
[0082] The second judgment module judges the difference between the catalyst temperature and the preset target temperature;
[0083] The second processing module, if the catalyst temperature is greater than or equal to the target temperature, the heating unit does not start heating the catalyst; if the catalyst temperature is less than the target temperature, the heating unit starts heating the catalyst;
[0084] A first calculation module calculates a difference between a catalyst temperature and a target temperature;
[0085] A third processing module, if the difference calculated by the first calculation module is greater than or equal to the fourth preset value, the catalyst is heated at a high speed according to the first preset power; if the difference is less than the fourth preset value, the catalyst is heated according to the second preset power;
[0086] The output execution module outputs the results of executing the first processing module, the second processing module and the third processing module.
[0087] According to a control system for exhaust emissions of an extended-range vehicle provided by this embodiment, if the battery pack power is less than a first preset value, it indicates that the power is low and needs to be replenished as soon as possible, so the range extender is directly started to generate electricity; after the range extender is started, if the battery pack power is greater than or equal to a second preset value, it is further determined whether the heating unit needs to heat the catalyst.
[0088] If the battery pack power is greater than or equal to the first preset value, it indicates that the power is relatively sufficient. At this time, first determine whether the heating unit needs to heat the catalyst; if the heating is completed (that is, the vehicle controller receives a heating completion signal), start the range extender to maintain or replenish the power; determine the relationship between the catalyst temperature and the preset target temperature; if the catalyst temperature has reached or exceeded the target temperature, there is no need to start the heating unit; if the catalyst temperature is lower than the target temperature, start the heating unit to heat the catalyst; calculate the difference between the catalyst temperature and the target temperature, if the difference is greater than or equal to the fourth preset value (indicating that the temperature difference is large and rapid heating is required), heat the catalyst at a high speed according to the first preset power (higher power); if the difference is less than the fourth preset value (indicating that the temperature difference is small and the target temperature can be approached more slowly), heat the catalyst according to the second preset power (lower power); finally, output and execute corresponding control instructions, such as starting or stopping the range extender, starting or adjusting the power of the heating unit, etc.
[0089] In the embodiment of the present application, a control system for exhaust emissions of an extended-range vehicle may be a system, or a component, an integrated circuit, or a chip in a terminal. The device may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc., and the non-mobile electronic device may be a server, a network attached storage (NAS), a personal computer (PC), etc., which is not specifically limited in the embodiment of the present application.
[0090] In the embodiment of the present application, a control system for exhaust emissions of an extended-range vehicle may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.
[0091] The exhaust emission control system of a range-extended vehicle provided in the embodiment of the present application can achieve Figure 1 In the method embodiment, various processes of a method for controlling exhaust emissions of a range-extended vehicle are implemented, and to avoid repetition, they are not described here.
[0092] According to a control system for exhaust emissions of extended-range vehicles provided by this embodiment, the system achieves efficient energy management by accurately monitoring the battery pack power and catalyst temperature, and dynamically adjusting the working states of the range extender and the heating unit according to actual conditions; by timely heating the catalyst, it is ensured that it operates at the optimal working temperature, thereby more effectively catalyzing harmful substances in the exhaust gas and reducing emission levels; the dynamic heating power adjustment strategy can reduce unnecessary energy consumption and heat accumulation, and help extend the service life of the catalyst and the heating unit; the system can automatically adjust the operation of the range extender and the heating unit according to the vehicle status and needs, reducing the driver's intervention and operation complexity, and improving the driving experience; through continuous monitoring and dynamic adjustment, the system can promptly detect and deal with potential
[0093] Optionally, an embodiment of the present application also provides an electronic device, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned embodiment of the method for controlling exhaust emissions of an extended-range vehicle is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.
[0094] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned embodiment of a method for controlling exhaust emissions of an extended-range vehicle is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
[0095] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.
[0096] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.
[0097] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of each embodiment of the present application.
[0098] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A method for controlling exhaust emissions of a range-extended vehicle, characterized in that: The method comprises: Arranging an electrothermal catalytic device between the engine and the exhaust tail pipe of the target vehicle; Obtaining the power of the target vehicle battery pack and the temperature of the electrothermal catalytic device once every first preset time; If the battery pack power is less than a first preset value, the range extender sends a start request to the vehicle controller of the target vehicle, and the range extender starts; After the vehicle controller receives the range extender start completion signal, if the battery pack power is less than a first preset value and greater than or equal to a second preset value, the vehicle controller determines whether to heat the electrothermal catalytic device according to the temperature of the electrothermal catalytic device; If the battery pack power is greater than or equal to the first preset value, the vehicle controller determines whether to heat the electrothermal catalytic device according to the temperature of the electrothermal catalytic device; After the vehicle controller receives the heating completion signal, if the battery pack power is greater than or equal to the first preset value and less than a third preset value, the range extender sends a start request to the vehicle controller, and the range extender starts.
2. A method for controlling exhaust emissions of a range-extended vehicle according to claim 1, characterized in that: The electrothermal catalytic device includes a first oxygen sensor, a second oxygen sensor, a heating unit, and a catalytic unit; the arrangement order from the engine to the exhaust tail pipe is the first oxygen sensor, the heating unit, the catalytic unit, and the second oxygen sensor; the heating unit is used to heat the catalytic unit.
3. A method for controlling exhaust emissions of a range-extended vehicle according to claim 2, characterized in that: The vehicle controller determines whether the electrothermal catalytic device is heated according to the temperature of the electrothermal catalytic device, specifically: If the temperature of the catalytic unit is greater than or equal to the target temperature, the catalytic unit does not send a heating request to the vehicle controller, and the heating unit does not start heating the catalytic unit; If the temperature of the catalytic unit is lower than the target temperature, the catalytic unit sends a heating request to the vehicle controller, and the heating unit starts heating the catalytic unit.
4. A method for controlling exhaust emissions of a range-extended vehicle according to claim 3, characterized in that: After the heating unit starts to heat the catalytic unit, the vehicle controller determines the difference between the actual temperature of the catalytic unit and the target temperature; If the difference is greater than or equal to a fourth preset value, the vehicle controller controls the heating unit to heat the catalytic unit at a high speed according to a first preset power; If the difference is less than the fourth preset value, the vehicle controller controls the heating unit to slowly heat the catalytic unit according to the second preset power.
5. The method for controlling exhaust emissions of a range-extended vehicle according to claim 1, characterized in that: If the battery pack power is less than the second preset value, the vehicle controller does not determine whether the electrothermal catalytic device is heated; if the battery pack power is greater than the third preset value, the vehicle controller does not start the range extender of the target vehicle.
6. A method for controlling exhaust emissions of a range-extended vehicle according to claim 2, characterized in that: The catalytic unit includes a three-way catalyst.
7. The method for controlling exhaust emissions of a range-extended vehicle according to claim 1, characterized in that: The first preset value is 10%, the second preset value is 5%, and the third preset value is 20%.
8. A control system for exhaust emissions of a range-extended vehicle, capable of implementing the control system for exhaust emissions of a range-extended vehicle as claimed in any one of claims 1 to 7, characterized in that: The system comprises: A first acquisition module, acquiring the battery pack power and catalyst temperature of the target vehicle once at a preset time interval; A first judgment module, judging the difference between the power of the battery pack and a first preset value; The first processing module directly starts the range extender of the target vehicle if the battery pack power is less than the first preset value. After the range extender is started, if the battery pack power is greater than or equal to the second preset value, it is determined whether the heating unit heats the catalyst; if the battery pack power is greater than or equal to the first preset value, it is determined whether the heating unit heats the catalyst; when the vehicle controller receives a heating completion signal, the range extender is started; A second judgment module is used to judge the difference between the catalyst temperature and a preset target temperature; The second processing module, if the catalyst temperature is greater than or equal to the target temperature, the heating unit does not start heating the catalyst; if the catalyst temperature is less than the target temperature, the heating unit starts heating the catalyst; A first calculation module, calculating a difference between the catalyst temperature and the target temperature; a third processing module, heating the catalyst at a high speed according to a first preset power if the difference calculated by the first calculation module is greater than or equal to a fourth preset value; and heating the catalyst at a second preset power if the difference is less than the fourth preset value; The output execution module outputs the results of executing the first processing module, the second processing module and the third processing module.
9. An electronic device, characterized in that: It includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of a method for controlling exhaust emissions of a range-extended vehicle as described in claims 1-7 are implemented.
10. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the method for controlling exhaust emissions of an extended-range vehicle as described in claims 1-7 are implemented.