Vehicle carbon tank desorption method, device and equipment and vehicle

Abstract

The embodiment of the invention relates to a vehicle carbon tank desorption method, device and equipment and a vehicle and relates to the technical field of vehicle control, and the method is applied to the vehicle and comprises the steps that when an engine is in an extinguished state after the vehicle is started, the next-time automatic starting time of the engine and the first carbon tank pressure of the vehicle are obtained; when it is judged that the first carbon tank pressure is smaller than a preset first pressure threshold value, the second carbon tank pressure of the vehicle after the next automatic starting time is determined based on the fuel evaporation amount of the vehicle; when it is judged that the second carbon tank pressure is larger than or equal to a preset second pressure threshold value, the vehicle is controlled to conduct carbon tank desorption according to a preset carbon tank desorption strategy; wherein the preset second pressure threshold value is greater than the preset first pressure threshold value. According to the method, the oil gas can be desorbed under the condition that the engine of the vehicle is not started, and the fuel consumption is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle control technology, and in particular to a vehicle carbon canister desorption method, device, equipment and vehicle. Background Art

[0002] Hybrid vehicles are attracting widespread attention in the current automotive industry for their energy efficiency and environmental friendliness. To meet emission standards, hybrid vehicles undergo long-term pure electric driving. In hot summer weather, gasoline evaporates, and the carbon canister absorbs the vapors. Using a normal-pressure fuel tank, however, cannot sustain the pressure generated by the volatile vapors for long periods of time. Once the pressure reaches a low point, the vapors are released into the atmosphere, failing to meet emission regulations. To prevent the release of volatile vapors into the atmosphere, some automakers using normal-pressure tanks frequently restart the engine to purge and reduce tank pressure.

[0003] Although the above method can solve the problem of releasing gas into the atmosphere, it still cannot meet emission requirements. Therefore, hybrid models all use high-pressure fuel tanks to maintain a higher pressure in the tanks. However, the oil and gas problem in the high-pressure fuel tanks of hybrid models will also lead to frequent engine start-up for desorption treatment, which increases energy consumption and reduces user experience. Summary of the Invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a vehicle carbon canister desorption method, device, equipment and vehicle.

[0005] An embodiment of the present disclosure provides a vehicle carbon canister desorption method applied to a vehicle, the method comprising: when the engine is in an off state after the vehicle is started, obtaining the next automatic start time of the engine and the first carbon canister pressure of the vehicle; judging whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold, and when the first carbon canister pressure is less than the preset first pressure threshold, determining the second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount of the vehicle; judging whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold, and when the second carbon canister pressure is greater than or equal to the preset second pressure threshold, controlling the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy; wherein, the preset second pressure threshold is greater than the preset first pressure threshold.

[0006] Optionally, the method further includes: when the first carbon canister pressure is greater than or equal to the preset first pressure threshold, performing processing according to the preset carbon canister desorption strategy.

[0007] Therefore, when the first carbon canister pressure is greater than or equal to the preset first pressure threshold, it is determined that the carbon canister can be desorbed directly, and the process is directly performed according to the preset carbon canister desorption strategy, so that the vehicle can desorb oil and gas without starting the engine, further reducing fuel consumption.

[0008] Optionally, determining the second carbon canister pressure of the vehicle after the next automatic start-up time based on the fuel evaporation amount includes: obtaining the current monitored ambient temperature and the current forecast ambient temperature of the vehicle, and determining the target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecast ambient temperature; obtaining the driving information of the vehicle within a preset historical time period, and determining the vehicle driving time and vehicle parking time within the next automatic start-up time based on the driving information; calculating based on the target ambient temperature, the vehicle driving time and the vehicle parking time to obtain the fuel evaporation amount, and determining the second carbon canister pressure after the next automatic start-up time based on the fuel evaporation amount.

[0009] Therefore, when the first carbon canister pressure is lower than the preset first pressure threshold, the vehicle driving time and parking time predicted by the ambient temperature and historical driving information are used to calculate the fuel evaporation amount, thereby determining the second carbon canister pressure after the next automatic start time based on the fuel evaporation amount. Based on the second carbon canister pressure, it is possible to further determine whether to desorb the carbon canister, so that the vehicle can desorb the carbon canister without starting the engine, thereby improving the user experience.

[0010] Optionally, the target ambient temperature for calculating the fuel evaporation amount is determined based on the current monitored ambient temperature and the current forecast ambient temperature, including: calculating the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature; when the absolute difference is less than or equal to a preset difference threshold, obtaining the forecast target time period ambient temperature information, and determining the target ambient temperature based on the forecast target time period ambient temperature information; or, when the absolute difference is greater than a preset difference threshold, using the maximum temperature value between the current monitored ambient temperature and the highest temperature value within a preset period as the target ambient temperature.

[0011] Therefore, the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature is used to determine the ambient temperature used to calculate the fuel evaporation amount in different ways, thereby further improving the accuracy of the fuel evaporation amount calculation, thereby improving the accuracy of the vehicle carbon canister desorption control, further meeting user needs, and improving the user experience.

[0012] Optionally, the processing according to the preset carbon canister desorption strategy includes: obtaining the vehicle fuel tank oil level of the vehicle; determining whether the vehicle fuel tank oil level is greater than or equal to a preset fuel tank oil level threshold; when the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, controlling the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing.

[0013] Therefore, based on the comparison between the vehicle's fuel tank oil level and the preset fuel tank oil level threshold, the carbon canister solenoid valve is controlled to open to start the parking heater to perform carbon canister desorption processing, thereby improving the control accuracy of the parking heater, so that the vehicle can desorb oil and gas by only starting the parking heater without starting the engine, thereby reducing fuel consumption.

[0014] Optionally, after the carbon canister solenoid valve is controlled to open and run for a preset period of time to perform carbon canister desorption processing, the method also includes: obtaining a third vehicle carbon canister pressure of the vehicle; determining whether the third vehicle carbon canister pressure is less than or equal to a preset third pressure threshold; wherein the third pressure threshold is less than the first pressure threshold; when the third vehicle carbon canister pressure is less than or equal to the third pressure threshold, controlling the parking heater to turn off.

[0015] Therefore, after the carbon canister desorption process is performed, the parking heater is controlled to be turned off in a timely manner by comparing the vehicle carbon canister pressure with the threshold in real time, thereby further improving the flexibility and efficiency of the vehicle carbon canister desorption.

[0016] Optionally, the method further includes: when the pressure of the third vehicle carbon canister is greater than the third pressure threshold, controlling the parking heater to continue operating for the preset time period.

[0017] Therefore, after the carbon canister desorption process is performed, the parking heater is controlled to continue operating by comparing the vehicle carbon canister pressure with the threshold in real time to ensure the effect of the carbon canister desorption process.

[0018] The embodiment of the present disclosure also provides a vehicle carbon canister desorption device, which is applied to a vehicle, and the method includes: an acquisition module, which is used to obtain the next automatic start time of the engine and the first carbon canister pressure of the vehicle when the engine is in an off state after the vehicle is started; a first judgment module, which is used to judge whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold; a determination module, which is used to determine the second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount of the vehicle when the first carbon canister pressure is less than the preset first pressure threshold; a second judgment module, which is used to judge whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold; wherein the preset second pressure threshold is greater than the preset first pressure threshold; and a processing module, which is used to control the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy when the second carbon canister pressure is greater than or equal to the preset second pressure threshold.

[0019] An embodiment of the present disclosure also provides an electronic device, which includes: a processor; a memory for storing executable instructions of the processor; the processor is used to read the executable instructions from the memory and execute the instructions to implement the vehicle carbon canister desorption method provided by the embodiment of the present disclosure.

[0020] The embodiments of the present disclosure also provide a vehicle, including the digital key-based vehicle management device provided by the embodiments of the present disclosure or the electronic device provided by the embodiments of the present disclosure.

[0021] An embodiment of the present disclosure further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program is used to execute the vehicle carbon canister desorption method provided by the embodiment of the present disclosure.

[0022] An embodiment of the present disclosure further provides a computer program product, including a computer program, wherein the computer program is executed by a processor as the vehicle carbon canister desorption method provided in the embodiment of the present disclosure.

[0023] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art: The vehicle carbon canister desorption solution provided by the embodiments of the present disclosure, applied to a vehicle, includes: obtaining the next automatic engine start time and the vehicle's first carbon canister pressure when the engine is off after the vehicle is started; determining whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold, and if the first carbon canister pressure is less than the preset first pressure threshold, determining the vehicle's second carbon canister pressure after the next automatic start time based on the vehicle's fuel evaporation amount; determining whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold, and if the second carbon canister pressure is greater than or equal to the preset second pressure threshold, controlling the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy; wherein the preset second pressure threshold is greater than the preset first pressure threshold. Thus, by monitoring the engine's scheduled start time and predicting that the carbon canister pressure is greater than or equal to the pressure threshold based on the vehicle's fuel evaporation amount, the vehicle's carbon canister desorption is performed. This allows the vehicle to desorb fuel vapor by activating only the parking heater without starting the engine, thereby reducing fuel consumption and improving the user experience.

[0024] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and other features, advantages, and aspects of the various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the originals and elements are not necessarily drawn to scale.

[0026] Figure 1 A schematic flow chart of a vehicle carbon canister desorption method provided in an embodiment of the present disclosure; Figure 2 A schematic flow chart of another vehicle carbon canister desorption method provided by an embodiment of the present disclosure; Figure 3 This is an example diagram of a vehicle carbon canister desorption method provided by an embodiment of the present disclosure; Figure 4 A schematic structural diagram of a vehicle carbon canister desorption device provided by an embodiment of the present disclosure; Figure 5 A schematic structural diagram of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present disclosure in more detail with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0028] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0029] As used herein, the term "including" and its variations are open-ended, i.e., "including but not limited to." The term "based on" means "based, at least in part, on." The term "one embodiment" means "at least one embodiment," the term "another embodiment" means "at least one additional embodiment," and the term "some embodiments" means "at least some embodiments." Other terms are defined in the following description.

[0030] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0031] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0032] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0033] In actual application scenarios, the automobile industry is developing rapidly, and most of the fuel used in vehicles comes from fossil fuels. The use of most fossil fuels will pollute the environment, and they are all non-renewable resources. In the current automobile industry, hybrid vehicles have received widespread attention due to their energy efficiency and environmental protection characteristics.

[0034] It is understandable that when hybrid models are driven purely on electric power for a long time, in order to meet emission regulations, in the high temperature environment in summer, gasoline evaporates and the carbon canister adsorbs the oil and gas. Using a normal pressure fuel tank, it is impossible to maintain the pressure of the volatile oil and gas for a long time. When a lower pressure is reached, it is released into the atmosphere, which cannot meet emission regulations. When some car companies use normal pressure fuel tanks, in order to ensure that the volatile oil and gas in the tank are not released into the atmosphere, they frequently start the engine for desorption and reduce the tank pressure. However, although this method can solve the problem of release into the atmosphere, it still cannot meet emission regulations and is likely to reduce user experience. Therefore, hybrid models all use high-pressure fuel tanks so that the tank can maintain a higher pressure. However, the oil and gas problem in the high-pressure tank of hybrid models will also lead to frequent engine starting for desorption, which not only increases energy consumption, but also reduces user experience.

[0035] To address the above technical issues, the present disclosure proposes a vehicle carbon canister desorption solution. The solution, applied to a vehicle, obtains the next automatic engine start time and the vehicle's first carbon canister pressure when the engine is off after the vehicle is started. The solution then determines whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold. If the first carbon canister pressure is less than the preset first pressure threshold, the solution determines the vehicle's second carbon canister pressure after the next automatic start time based on the vehicle's fuel evaporation. The solution then determines whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold. If the second carbon canister pressure is greater than or equal to the preset second pressure threshold, the solution controls the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy. The preset second pressure threshold is greater than the preset first pressure threshold. Thus, by monitoring the engine's scheduled start time and predicting that the carbon canister pressure is greater than or equal to the pressure threshold based on the vehicle's fuel evaporation, the vehicle's carbon canister desorption is performed. This allows the vehicle to desorb fuel vapor by activating only the parking heater without starting the engine, thereby reducing fuel consumption and improving the user experience.

[0036] Figure 1 This is a flow chart of a vehicle carbon canister desorption method provided by an embodiment of the present disclosure. The vehicle carbon canister desorption method can be performed by a vehicle carbon canister desorption device, wherein the vehicle carbon canister desorption device can be implemented using software and / or hardware and can generally be integrated into an electronic device. Figure 1 As shown, the vehicle carbon canister desorption method is applied to electronic equipment, including: Step 101: When the engine is off after the vehicle is started, obtain the next automatic start time of the engine and the first carbon canister pressure of the vehicle.

[0037] In the disclosed embodiment, the vehicle is typically a hybrid vehicle, that is, a conventional internal combustion engine and an electric motor are used as power sources; the vehicle has an automatic engine start-stop function, which automatically shuts down the vehicle when the vehicle temporarily stops (such as waiting at a traffic light) while driving; and automatically restarts the engine when it needs to continue moving forward.

[0038] In the embodiment of the present disclosure, when the engine is off after the vehicle is started, the vehicle's carbon canister purge function is on, that is, the vehicle carbon canister purge method of the embodiment of the present disclosure is executed when the carbon canister purge function is on.

[0039] Specifically, the controller determines the next automatic start time of the engine and monitors the first carbon canister pressure of the vehicle. The first carbon canister pressure can be obtained by detecting through the carbon canister pressure sensor; wherein, the first carbon canister pressure refers to the pressure value of the carbon canister installed between the gasoline tank and the engine.

[0040] Step 102: Determine whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold, and if the first carbon canister pressure is less than the preset first pressure threshold, determine the second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount of the vehicle.

[0041] In the embodiment of the present disclosure, a first pressure threshold is pre-set and can be selected according to the actual application scenario. After obtaining the first carbon canister pressure, the first carbon canister pressure is compared with the preset first pressure threshold. When the first carbon canister pressure is less than the preset first pressure threshold, the second carbon canister pressure of the vehicle after the next automatic start time is determined based on the fuel evaporation amount of the vehicle.

[0042] Specifically, after determining that the first carbon canister pressure is less than the preset first pressure threshold, the vehicle's fuel evaporation amount is predicted, and the vehicle's second carbon canister pressure after the next automatic start time is determined based on the vehicle's fuel evaporation amount; the second carbon canister pressure refers to the predicted vehicle's carbon canister pressure after the next automatic start time.

[0043] It can be understood that fuel evaporation refers to the amount of liquid gasoline that is reduced in the fuel tank due to volatilization, which is usually affected by temperature, fuel tank design and parking environment. That is to say, high temperature will accelerate the movement of gasoline molecules; the fuel tank controls evaporation through an activated carbon canister and a ventilation system, and the monthly evaporation under normal sealing conditions is extremely small; high temperature exposure will significantly increase the evaporation rate, while a cool place can reduce evaporation losses, etc.

[0044] It is also understandable that increased fuel evaporation will cause the pressure inside the carbon canister to increase. That is to say, gasoline will evaporate faster when heated or shaken in the tank. If the generated steam is not dealt with in time, it will cause the pressure inside the tank to increase.

[0045] There are many ways to obtain the fuel evaporation amount. Specifically, the vehicle's ambient temperature, driving time and parking time are predicted to calculate and determine the fuel evaporation amount, and the second carbon canister pressure after the next automatic start time is determined based on the fuel evaporation amount.

[0046] It should be noted that when the pressure of the first carbon canister is greater than or equal to the preset first pressure threshold, processing is performed according to the preset carbon canister desorption strategy.

[0047] Step 103: Determine whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold, and when the second carbon canister pressure is greater than or equal to the preset second pressure threshold, control the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy; wherein the preset second pressure threshold is greater than the preset first pressure threshold.

[0048] In the embodiment of the present disclosure, a second pressure threshold is pre-set and can be selected according to the actual application scenario. After obtaining the second carbon canister pressure, the second carbon canister pressure is compared with the preset second pressure threshold. When the second carbon canister pressure is greater than or equal to the preset second pressure threshold, the vehicle is controlled to desorb the carbon canister according to the preset carbon canister desorption strategy.

[0049] In the embodiment of the present disclosure, the preset second pressure threshold is greater than the preset first pressure threshold.

[0050] It should be noted that when the pressure of the second carbon canister is less than the preset second pressure threshold, the controller controls the vehicle to wait for the engine to start to desorb the oil and gas in the carbon canister.

[0051] Specifically, there are many ways to control the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy. Specifically, whether to control the carbon canister solenoid valve to open to activate the parking heater to operate for a preset time period to desorb the carbon canister canister can be determined based on the fuel level in the vehicle's fuel tank. More specifically, when the fuel level in the vehicle's fuel tank is greater than or equal to a preset fuel tank level threshold, the carbon canister solenoid valve is controlled to open to activate the parking heater to operate for a preset time period to desorb the carbon canister canister can be desorbed.

[0052] Specifically, the fuel vapor in the fuel tank will evaporate at room temperature, causing the internal pressure of the fuel tank to increase; when the pressure exceeds a certain value, the carbon canister releases air by adsorbing the fuel vapor to maintain the pressure balance of the fuel tank.

[0053] In other words, the adsorption capacity of the carbon canister is limited by its physical structure (such as the amount of activated carbon filling) and cost constraints, and cannot be expanded indefinitely; when the adsorbed fuel vapor reaches a certain value, that is, when the carbon canister pressure reaches a certain value, the carbon canister needs to be desorbed.

[0054] It should be noted that when the vehicle's fuel tank oil level is less than the preset fuel tank oil level threshold, it means that the current vehicle fuel tank oil level and the oil and gas volatilized in the tank will not be released into the atmosphere, so the carbon canister desorption will not be performed according to the preset carbon canister desorption strategy.

[0055] The vehicle carbon canister desorption scheme provided by the disclosed embodiment is applied to a vehicle. When the engine is off after the vehicle is started, the scheme obtains the next automatic engine start time and the vehicle's first carbon canister pressure; determines whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold, and when the first carbon canister pressure is less than the preset first pressure threshold, determines the vehicle's second carbon canister pressure after the next automatic start time based on the vehicle's fuel evaporation; determines whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold, and when the second carbon canister pressure is greater than or equal to the preset second pressure threshold, controls the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy; wherein the preset second pressure threshold is greater than the preset first pressure threshold. Thus, by monitoring the engine's regular start time and predicting that the carbon canister pressure is greater than or equal to the pressure threshold based on the vehicle's fuel evaporation, the vehicle's carbon canister desorption is performed. This allows the vehicle to desorb oil and gas by activating only the parking heater without starting the engine, thereby reducing fuel consumption and improving the user experience.

[0056] In some embodiments, when the first carbon canister pressure is greater than or equal to a preset first pressure threshold, processing is performed according to a preset carbon canister desorption strategy.

[0057] In an embodiment of the present disclosure, when the first carbon canister pressure is greater than or equal to a preset first pressure threshold, a preset carbon canister desorption strategy may be directly used. Specifically, whether to control the carbon canister solenoid valve to open to activate the parking heater for a preset duration to perform the carbon canister desorption process may be determined based on the vehicle's fuel tank level. More specifically, when the vehicle's fuel tank level is greater than or equal to a preset fuel tank level threshold, the carbon canister solenoid valve is controlled to open to activate the parking heater for a preset duration to perform the carbon canister desorption process.

[0058] Therefore, when the first carbon canister pressure is greater than or equal to the preset first pressure threshold, it is determined that the carbon canister can be desorbed directly, and the process is directly performed according to the preset carbon canister desorption strategy, so that the vehicle can desorb oil and gas without starting the engine, further reducing fuel consumption.

[0059] In some embodiments, determining the second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount includes: obtaining the current monitored ambient temperature and the current forecast ambient temperature of the vehicle, and determining the target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecast ambient temperature, obtaining the vehicle's driving information within a preset historical time period, and determining the vehicle's driving time and vehicle parking time within the next automatic start time based on the driving information; calculating based on the target ambient temperature, the vehicle's driving time, and the vehicle's parking time to obtain the fuel evaporation amount, and determining the second carbon canister pressure after the next automatic start time based on the fuel evaporation amount.

[0060] Specifically, a target ambient temperature for calculating the vehicle's fuel evaporation amount can be determined based on the vehicle's current monitored ambient temperature and the current forecast ambient temperature, and the vehicle's driving time and vehicle parking time within the next automatic start time can be determined based on the vehicle's driving information within a preset historical time period. The vehicle's fuel evaporation amount is calculated based on the target ambient temperature, vehicle driving time, and vehicle parking time, and the second carbon canister pressure after the next automatic start time is determined based on the vehicle's fuel evaporation amount.

[0061] Among them, the current monitored ambient temperature refers to the actual ambient temperature of the vehicle at the current time; the current forecast ambient temperature refers to the ambient temperature of the vehicle at the current time according to the weather forecast. There are many ways to determine a target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecast ambient temperature of the vehicle. In some embodiments, the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature is calculated. When the absolute difference is less than or equal to a preset difference threshold, the forecast target time period ambient temperature information is obtained, and the target ambient temperature is determined based on the forecast target time period ambient temperature information; or, when the absolute difference is greater than the preset difference threshold, the maximum temperature value between the current monitored ambient temperature and the highest temperature value in the preset period is used as the target ambient temperature.

[0062] Specifically, a difference threshold is set in advance and can be set according to actual application selection. Calculating the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature means taking the difference between the current monitored ambient temperature and the current forecast ambient temperature as the absolute difference when it is positive. If it is negative, its absolute value needs to be taken, that is, the absolute difference refers to the difference between the current monitored ambient temperature and the current forecast ambient temperature and it is positive.

[0063] Specifically, when the absolute difference is less than or equal to the preset difference threshold, the forecast target time period ambient temperature information is obtained, and the target ambient temperature is determined based on the forecast target time period ambient temperature information. That is, when the absolute difference is less than or equal to the preset difference threshold, the forecast target time period, such as a week's ambient temperature information, is read, so that the maximum ambient temperature of each day in the target time period can be obtained, and the target time period is extrapolated to the maximum ambient temperature within the next automatic startup time as the target ambient temperature.

[0064] Specifically, when the absolute difference is greater than the preset difference threshold, the maximum temperature value between the current monitored ambient temperature and the highest temperature value within the preset period is used as the target ambient temperature. That is to say, when the absolute difference is greater than the preset difference threshold, the maximum temperature value between the current monitored ambient temperature and the highest temperature value within the preset period, such as a week, is directly used as the target ambient temperature.

[0065] Therefore, the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature is used to determine the ambient temperature used to calculate the fuel evaporation amount in different ways, thereby further improving the accuracy of the fuel evaporation amount calculation, thereby improving the accuracy of the vehicle carbon canister desorption control, further meeting user needs, and improving the user experience.

[0066] Furthermore, the driving information of the vehicle within a preset historical period is obtained, and the vehicle driving time and vehicle parking time within the next automatic start time are determined based on the driving information. Specifically, for example, the vehicle mileage and driving time within a preset history, such as a month, are read, and the vehicle's daily mileage and daily driving time are calculated, so that the actual daily driving time can be calculated based on the daily mileage. The vehicle driving time and vehicle parking time within the next automatic start time of the engine can be calculated based on the actual daily driving time and the aforementioned daily driving time.

[0067] Furthermore, a calculation is performed based on the target ambient temperature, the vehicle driving time, and the vehicle parking time to obtain the fuel evaporation amount, and the second carbon canister pressure after the next automatic start time is determined based on the fuel evaporation amount. Specifically, the target ambient temperature, the vehicle driving time, and the vehicle parking time are input into a preset fuel evaporation amount formula for calculation to obtain the fuel evaporation amount, and the second carbon canister pressure after the next automatic start time is calculated based on the fuel evaporation amount. For example, the first carbon canister pressure plus the fuel evaporation amount is multiplied by a preset coefficient to obtain the second carbon canister pressure; wherein the preset coefficient can be selected and set according to actual application.

[0068] Therefore, when the first carbon canister pressure is lower than the preset first pressure threshold, the vehicle driving time and parking time predicted by the ambient temperature and historical driving information are used to calculate the vehicle's fuel evaporation amount, thereby determining the second carbon canister pressure after the next automatic start time based on the vehicle's fuel evaporation amount. Based on the second carbon canister pressure, it is possible to further determine whether to desorb the carbon canister, so that the vehicle can desorb the carbon canister without starting the engine, thereby improving the user experience.

[0069] In some embodiments, processing is performed according to a preset carbon canister desorption strategy, including: obtaining the vehicle's fuel tank oil level; determining whether the vehicle's fuel tank oil level is greater than or equal to a preset fuel tank oil level threshold; when the vehicle's fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, controlling the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing.

[0070] In an embodiment of the present disclosure, a preset fuel tank oil level threshold is set in advance, and the controller can read the vehicle fuel tank oil level of the vehicle. When the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, the carbon canister solenoid valve is controlled to open to start the parking heater to run for a preset time, such as one minute, to perform carbon canister desorption processing.

[0071] Among them, a return oil pipe is designed on the top of the fuel tank to recover gasoline vapor and maintain the pressure balance inside the tank.

[0072] Therefore, based on the comparison between the vehicle's fuel tank oil level and the preset fuel tank oil level threshold, the carbon canister solenoid valve is controlled to open to start the parking heater to perform carbon canister desorption processing, thereby improving the control accuracy of the parking heater, so that the vehicle can desorb oil and gas by only starting the parking heater without starting the engine, thereby reducing fuel consumption.

[0073] In some embodiments, after controlling the carbon canister solenoid valve to open and run for a preset period of time to perform carbon canister desorption processing, it also includes: obtaining the vehicle's third vehicle carbon canister pressure, and determining whether the third vehicle carbon canister pressure is less than or equal to a preset third pressure threshold; wherein the third pressure threshold is less than the first pressure threshold, and when the third vehicle carbon canister pressure is less than or equal to the third pressure threshold, the parking heater is controlled to turn off.

[0074] In the embodiment of the present disclosure, a third pressure threshold is set in advance and can be selected according to the actual application scenario. After the carbon canister solenoid valve is controlled to open and run for a preset period of time to perform carbon canister desorption processing, the third vehicle carbon canister pressure of the vehicle can be obtained through the carbon canister pressure sensor, and the third carbon canister pressure is compared with the preset third pressure threshold. When the third vehicle carbon canister pressure is less than or equal to the third pressure threshold, the parking heater is controlled to be turned off.

[0075] That is to say, when the carbon canister pressure is less than a certain pressure threshold, it is in a state that does not require processing. Therefore, the parking heater can be controlled to be turned off to improve vehicle control efficiency and flexibility.

[0076] Therefore, after the carbon canister desorption process is performed, the parking heater is controlled to be turned off in a timely manner by comparing the vehicle carbon canister pressure with the threshold in real time, thereby further improving the flexibility and efficiency of the vehicle carbon canister desorption.

[0077] It should be noted that when the third vehicle carbon canister pressure exceeds the third pressure threshold, the parking heater is controlled to continue operating for a preset time period. Thus, after the carbon canister desorption process is completed, the parking heater is controlled to continue operating by comparing the vehicle carbon canister pressure with the threshold in real time to ensure the effectiveness of the carbon canister desorption process.

[0078] Based on the description of the above embodiments, the vehicle carbon canister desorption control is performed by monitoring the engine regular start time, actual ambient temperature, forecast ambient temperature, carbon canister pressure and fuel tank fuel level, so that the vehicle only starts the parking heater to desorb oil and gas without starting the engine, thereby reducing fuel consumption and improving user experience.

[0079] Figure 2 This is a flow chart of another vehicle carbon canister desorption method provided by the embodiment of the present disclosure. This embodiment further optimizes the above vehicle carbon canister desorption method based on the above embodiment. Figure 2 As shown, the method includes: Step 201: When the engine is off after the vehicle is started, obtain the next automatic start time of the engine and the first carbon canister pressure of the vehicle, and determine whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold.

[0080] Step 202: When the first carbon canister pressure is greater than or equal to a preset first pressure threshold, obtain the vehicle fuel tank oil level of the vehicle, determine whether the vehicle fuel tank oil level is greater than or equal to a preset fuel tank oil level threshold, and when the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, control the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing.

[0081] Step 203: When the first carbon canister pressure is less than a preset first pressure threshold, obtain the current monitored ambient temperature and the current forecast ambient temperature of the vehicle, and determine a target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecast ambient temperature.

[0082] In an embodiment of the present disclosure, a target ambient temperature for calculating the amount of fuel evaporation is determined based on the current monitored ambient temperature and the current forecast ambient temperature, including: calculating the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature; when the absolute difference is less than or equal to a preset difference threshold, obtaining forecast target time period ambient temperature information, and determining the target ambient temperature based on the forecast target time period ambient temperature information; or, when the absolute difference is greater than the preset difference threshold, using the maximum temperature value between the current monitored ambient temperature and the highest temperature value within a preset period as the target ambient temperature.

[0083] Step 204: Acquire the driving information of the vehicle within a preset historical time period, and determine the vehicle driving time and vehicle parking time within the next automatic start time based on the driving information.

[0084] Step 205 : Calculate the fuel evaporation amount based on the target ambient temperature, the vehicle driving time, and the vehicle parking time, and determine the second carbon canister pressure after the next automatic start time based on the fuel evaporation amount.

[0085] Step 206: When the second carbon canister pressure is greater than or equal to a preset second pressure threshold, obtain the vehicle fuel tank oil level of the vehicle, determine whether the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, and when the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, control the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing.

[0086] Step 207: Obtain the pressure of a third vehicle carbon canister of the vehicle, and determine whether the pressure of the third vehicle carbon canister is less than or equal to a preset third pressure threshold.

[0087] Step 208: When the pressure of the third vehicle carbon canister is less than or equal to a third pressure threshold, control the parking heater to be turned off.

[0088] Step 209: When the pressure of the third vehicle carbon canister is greater than the third pressure threshold, control the parking heater to continue operating for a preset time period.

[0089] Specifically, after the vehicle is started, the vehicle's carbon canister desorption function is turned on to execute the vehicle carbon canister desorption method of the embodiment of the present disclosure, and the controller is used to determine the next automatic start time of the engine, and the first carbon canister pressure is obtained by detecting the carbon canister pressure sensor, and the first pressure threshold is pre-set. The first carbon canister pressure is compared with the preset first pressure threshold. When the first carbon canister pressure is less than the preset first pressure threshold, the vehicle's ambient temperature, driving time, and parking time are predicted to calculate and determine the vehicle's fuel evaporation amount, and the second carbon canister pressure after the next automatic start time is determined based on the vehicle's fuel evaporation amount.

[0090] Among them, the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature is calculated. When the absolute difference is less than or equal to the preset difference threshold, the ambient temperature information of the forecast target time period is obtained, and the target ambient temperature is determined based on the ambient temperature information of the forecast target time period. That is to say, when the absolute difference is less than or equal to the preset difference threshold, the ambient temperature information of the forecast target time period, such as a week, is read, so that the maximum ambient temperature of each day in the target time period can be obtained, and the maximum ambient temperature within the target time period is extrapolated to the next automatic startup time as the target ambient temperature.

[0091] Additionally, when the absolute difference is greater than a preset difference threshold, the maximum temperature between the current monitored ambient temperature and the highest temperature within a preset period is used as the target ambient temperature. This means that when the absolute difference is greater than a preset difference threshold, the maximum temperature between the current monitored ambient temperature and the highest temperature within a preset period, such as a week, is directly used as the target ambient temperature. This allows different methods to be used to determine the ambient temperature used to calculate the vehicle's fuel evaporation, further improving the accuracy of the vehicle's fuel evaporation calculation and, consequently, the precision of the vehicle's carbon canister purge control, further meeting user needs and enhancing the user experience.

[0092] Furthermore, a second pressure threshold is preset, and the second carbon canister pressure is compared with the preset second pressure threshold. When the second carbon canister pressure is greater than or equal to the preset second pressure threshold, a preset fuel tank level threshold is preset. When the vehicle's fuel tank level is greater than or equal to the preset fuel tank level threshold, the carbon canister solenoid valve is controlled to open to activate the parking heater for a preset duration to perform canister desorption. When the vehicle's fuel tank level is less than the preset fuel tank level threshold, canister desorption is not performed according to the preset canister desorption strategy. Thus, based on the comparison of the vehicle's fuel tank level with the preset fuel tank level threshold, the carbon canister solenoid valve is controlled to open to activate the parking heater for canister desorption, thereby improving parking heater control accuracy and enabling the vehicle to desorb fuel vapor by activating only the parking heater without starting the engine, thereby reducing fuel consumption.

[0093] In addition, a third pressure threshold is set in advance, and the third vehicle carbon canister pressure of the vehicle is obtained through the carbon canister pressure sensor, and the third carbon canister pressure is compared with the preset third pressure threshold. When the third vehicle carbon canister pressure is less than or equal to the third pressure threshold, the parking heater is controlled to be turned off. When the third vehicle carbon canister pressure is greater than the third pressure threshold, the parking heater is controlled to continue to run for a preset period of time. Therefore, after the carbon canister desorption process is performed, the parking heater is controlled to be turned off in time by comparing the vehicle carbon canister pressure and the threshold in real time, thereby further improving the flexibility and efficiency of the vehicle carbon canister desorption, and the parking heater is controlled to continue to run by comparing the vehicle carbon canister pressure and the threshold in real time to ensure the carbon canister desorption process effect.

[0094] For example, Figure 3 As shown, step 3.1 is when the vehicle is in the starting state and the engine is in the off state; step 3.2 the controller monitors the vehicle's intelligent desorption state; step 3.3 the controller determines whether the vehicle has turned on intelligent desorption; step 3.4 if not, this strategy is not executed; step 3.5 if yes, the controller determines the next automatic start time t1 of the engine; step 3.6 the controller monitors the vehicle carbon canister pressure P1; step 3.7 the controller determines whether P1 ≥ P0; step 3.8 if no, the controller monitors the ambient temperature T1, the controller monitors the weather forecast, and reads the current forecast temperature T2; step 3.9 the controller compares the absolute value of the difference between T1 and T2 ≤ N; step 3.10 if yes, the controller reads the weather forecast temperature for one week; step 3.11 the controller reads the maximum temperature value of each day, and extrapolates the temperature of these 7 days to time t1, and takes temperature T3 as an example to enter the following steps.

[0095] Specifically, in step 3.12, the controller reads the vehicle's mileage and time within a month and estimates the vehicle's daily mileage and time; step 3.13 continues with step 3.9, and if not, the controller compares T1 with the maximum temperature value in the weather forecast for the week; step 3.14 the controller reads the maximum temperature value T4; after step 3.14, the controller executes according to step 3.15; step 3.15 continues with step 3.12, and the controller calculates the vehicle's driving time t2 and parking time t3 within time t1; step 3.16 the controller calculates the vehicle's fuel evaporation amount Q1 = aT3 (or T4) * t2 + bT3 (or T4) * t3, and infers the carbon canister pressure value P2 = P1 + cQ1 after time t1 through Q1; step 3.17 the controller determines whether P2 ≥ P0 + P4; step 3.18 if not, the controller controls the vehicle to wait for the engine to start to desorb the oil and gas in the carbon canister, and executes according to step 3.2.

[0096] Specifically, step 3.19 follows step 3.17. If yes, the controller monitors the fuel level Q2 in the vehicle's fuel tank. In step 3.20, the controller determines whether Q2 is ≥ Q0. If not, this strategy is not executed. In step 3.21, if yes, the carbon canister solenoid valve opens, and the oil and gas in the carbon canister are adsorbed by the negative pressure of the parking heater intake air. Step 3.22 runs for 1 minute. In step 3.23, the controller monitors the carbon canister pressure P3. In step 3.24, the controller determines whether P3 is ≤ P0-P5. If not, step 3.22 is executed. In step 3.25, if yes, the controller controls the parking heater to be turned off and executes step 3.2.

[0097] Therefore, by monitoring the next automatic start time of the engine and combining the actual ambient temperature of the vehicle, the ambient temperature predicted by terminal and other applications, the carbon canister pressure and the fuel amount in the tank, the vehicle carbon canister desorption control is performed, so that the vehicle only starts the parking heater to desorb oil and gas without starting the engine, reducing fuel consumption, meeting user needs, and further improving user experience.

[0098] The vehicle carbon canister desorption solution provided by the embodiment of the present disclosure obtains the next automatic start time of the vehicle's engine and the first carbon canister pressure of the vehicle when the engine is in an off state after the vehicle is started, determines whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold, obtains the vehicle's fuel tank oil level when the first carbon canister pressure is greater than or equal to the preset first pressure threshold, determines whether the vehicle's fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, controls the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing when the vehicle's fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, obtains the vehicle's current monitored ambient temperature and the current forecast ambient temperature when the first carbon canister pressure is less than the preset first pressure threshold, and determines the target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecast ambient temperature, obtains the vehicle's driving information within a preset historical time period, and determines based on the driving information Determine the vehicle driving time and vehicle parking time within the next automatic start time, calculate based on the target ambient temperature, the vehicle driving time and the vehicle parking time to obtain the fuel evaporation amount, and determine the second carbon canister pressure after the next automatic start time based on the fuel evaporation amount, when the second carbon canister pressure is greater than or equal to a preset second pressure threshold, obtain the vehicle fuel tank oil level of the vehicle, determine whether the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, when the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, control the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing, obtain the vehicle's third vehicle carbon canister pressure, determine whether the third vehicle carbon canister pressure is less than or equal to the preset third pressure threshold, when the third vehicle carbon canister pressure is less than or equal to the third pressure threshold, control the parking heater to turn off, and when the third vehicle carbon canister pressure is greater than the third pressure threshold, control the parking heater to continue to run for a preset time. Therefore, by monitoring the engine's regular start-up time and predicting the carbon canister pressure to be greater than or equal to the pressure threshold based on the fuel evaporation amount, the vehicle's carbon canister is desorbed, allowing the vehicle to desorb oil and gas by only starting the parking heater without starting the engine, thereby reducing fuel consumption and improving user experience.

[0099] Figure 4 This is a schematic diagram of the structure of a vehicle carbon canister desorption device provided by an embodiment of the present disclosure. The device can be implemented by software and / or hardware and can generally be integrated into an electronic device. Figure 4 As shown, the device is applied to a vehicle and includes: An acquisition module 410 is configured to acquire, after the vehicle is started and the engine is in an off state, a next automatic start time of the engine and a first carbon canister pressure of the vehicle; A first determination module 420 is configured to determine whether the pressure of the first carbon canister is greater than or equal to a preset first pressure threshold; a determination module 430 for determining a second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount of the vehicle when the first carbon canister pressure is less than the preset first pressure threshold; The second judgment module 440 is configured to judge whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold; wherein the preset second pressure threshold is greater than the preset first pressure threshold; The processing module 450 is configured to control the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy when the second carbon canister pressure is greater than or equal to the preset second pressure threshold.

[0100] Therefore, by monitoring the regular engine start time, the vehicle carbon canister is desorbed when the carbon canister pressure is predicted to be greater than or equal to the pressure threshold based on the vehicle's fuel evaporation amount. This allows the vehicle to desorb oil and gas by only starting the parking heater without starting the engine, thereby reducing fuel consumption and improving user experience.

[0101] Optionally, the processing module 450 is further configured to: when the first carbon canister pressure is greater than or equal to the preset first pressure threshold, perform processing according to the preset carbon canister desorption strategy.

[0102] Therefore, when the first carbon canister pressure is greater than or equal to the preset first pressure threshold, it is determined that the carbon canister can be desorbed directly, and the process is directly performed according to the preset carbon canister desorption strategy, so that the vehicle can desorb oil and gas without starting the engine, further reducing fuel consumption.

[0103] Optionally, the determination module includes: an acquisition unit for acquiring the current monitored ambient temperature and the current forecast ambient temperature of the vehicle; a calculation unit for determining the target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecast ambient temperature; a determination unit for acquiring the driving information of the vehicle within a preset historical time period, and determining the vehicle driving time and vehicle parking time within the next automatic start time based on the driving information; a calculation and determination unit for performing calculations based on the target ambient temperature, the vehicle driving time and the vehicle parking time to obtain the fuel evaporation amount, and determining the second carbon canister pressure after the next automatic start time based on the fuel evaporation amount.

[0104] Therefore, when the first carbon canister pressure is lower than the preset first pressure threshold, the vehicle driving time and parking time predicted by the ambient temperature and historical driving information are used to calculate the vehicle's fuel evaporation amount, thereby determining the second carbon canister pressure after the next automatic start time based on the vehicle's fuel evaporation amount. Based on the second carbon canister pressure, it is possible to further determine whether to desorb the carbon canister, so that the vehicle can desorb the carbon canister without starting the engine, thereby improving the user experience.

[0105] Optionally, the calculation unit is specifically used to: calculate the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature; when the absolute difference is less than or equal to a preset difference threshold, obtain the forecast target time period ambient temperature information, and determine the target ambient temperature based on the forecast target time period ambient temperature information; or, when the absolute difference is greater than the preset difference threshold, use the maximum temperature value between the current monitored ambient temperature and the highest temperature value within a preset period as the target ambient temperature.

[0106] Therefore, the absolute difference between the current monitored ambient temperature and the current forecast ambient temperature selects different methods to determine the ambient temperature used to calculate the vehicle's fuel evaporation amount, further improving the calculation accuracy of the vehicle's fuel evaporation amount, thereby improving the accuracy of the vehicle's carbon canister desorption control, further meeting user needs, and enhancing user experience.

[0107] Optionally, the processing module 450 is specifically used to: obtain the vehicle fuel tank oil level of the vehicle; determine whether the vehicle fuel tank oil level is greater than or equal to a preset fuel tank oil level threshold; when the vehicle fuel tank oil level is greater than or equal to the preset fuel tank oil level threshold, control the carbon canister solenoid valve to open to start the parking heater to run for a preset time to perform carbon canister desorption processing.

[0108] Therefore, based on the comparison between the vehicle's fuel tank oil level and the preset fuel tank oil level threshold, the carbon canister solenoid valve is controlled to open to start the parking heater to perform carbon canister desorption processing, thereby improving the control accuracy of the parking heater, so that the vehicle can desorb oil and gas by only starting the parking heater without starting the engine, thereby reducing fuel consumption.

[0109] Optionally, after the control carbon canister solenoid valve is opened and runs for a preset period of time to perform carbon canister desorption processing, the device also includes: an acquisition and judgment module, used to obtain the third vehicle carbon canister pressure of the vehicle, and judge whether the third vehicle carbon canister pressure is less than or equal to a preset third pressure threshold; wherein the third pressure threshold is less than the first pressure threshold; a first control module, used to control the parking heater to turn off when the third vehicle carbon canister pressure is less than or equal to the third pressure threshold.

[0110] Therefore, after the carbon canister desorption process is performed, the parking heater is controlled to be turned off in a timely manner by comparing the vehicle carbon canister pressure with the threshold in real time, thereby further improving the flexibility and efficiency of the vehicle carbon canister desorption.

[0111] Optionally, the device further includes: a second control module, configured to control the parking heater to continue operating for the preset time period when the pressure of the third vehicle carbon canister is greater than the third pressure threshold.

[0112] Therefore, after the carbon canister desorption process is performed, the parking heater is controlled to continue operating by comparing the vehicle carbon canister pressure with the threshold in real time to ensure the effect of the carbon canister desorption process.

[0113] The vehicle carbon canister desorption device provided in the embodiment of the present disclosure can execute the vehicle carbon canister desorption method provided in any embodiment of the present disclosure, and has the corresponding functional modules and beneficial effects of the execution method.

[0114] The embodiments of the present disclosure further provide a computer program product, including a computer program / instruction, which, when executed by a processor, implements the vehicle carbon canister desorption method provided by any embodiment of the present disclosure.

[0115] FIG5 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.

[0116] For example, Figure 5 As shown, the electronic device includes: a memory 501 and a processor 502, wherein the memory 501 stores an executable program code 5011, and the processor 502 is used to call and execute the executable program code 5011 to perform a vehicle carbon canister desorption method.

[0117] In this embodiment, the electronic device can be divided into functional modules according to the above-described method example. For example, each functional module can be mapped to a specific function, or two or more functions can be integrated into a single processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used.

[0118] In the case of dividing each functional module into corresponding functional modules, the electronic device may include: a receiving and obtaining module, a calculation module, and an early warning module. It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0119] The electronic device provided in this embodiment is used to execute the above-mentioned vehicle carbon canister desorption method, and thus can achieve the same effect as the above-mentioned implementation method.

[0120] In the case of an integrated unit, the electronic device may include a processing module and a storage module. The processing module may be used to control and manage the operation of the electronic device, and the storage module may be used to support the electronic device in executing mutual program codes and data.

[0121] The processing module may be a processor or controller that implements or executes various exemplary logic blocks, modules, and circuits described herein. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing (DSP) and a microprocessor, and the storage module may be a memory.

[0122] This embodiment also provides a computer-readable storage medium, which stores computer program code (including but not limited to disk storage, CD-ROM, optical storage, etc.). When the computer program code runs on a computer, the computer executes the above-mentioned related method steps to implement a vehicle carbon canister desorption method provided in the above embodiment.

[0123] This embodiment further provides a computer program product. When the computer program product is run on a computer, it enables the computer to execute the above-mentioned related steps to implement the vehicle carbon canister desorption method provided in the above embodiment.

[0124] Among them, the beneficial effects of the above embodiments can refer to the beneficial effects of the corresponding methods provided above, and will not be repeated here.

[0125] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0126] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. In the description of the present disclosure, it should be understood that if the terms "up", "down", "front", "back", "left" and "right" are used to indicate directions or positional relationships, they are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations of the present disclosure.

[0127] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. It should also be noted that the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, commodity, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, commodity, or device comprising the element. The above are merely examples of the present disclosure and are not intended to limit the present disclosure. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure are intended to be included within the scope of the claims of the present disclosure.

Claims

1. A vehicle carbon canister desorption method, characterized in that: Applied to a vehicle, the method comprises: When the engine is off after the vehicle is started, obtaining the next automatic start time of the engine and the first carbon canister pressure of the vehicle; determining whether the first carbon canister pressure is greater than or equal to a preset first pressure threshold, and if the first carbon canister pressure is less than the preset first pressure threshold, determining a second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount of the vehicle; Determine whether the second carbon canister pressure is greater than or equal to a preset second pressure threshold, and when the second carbon canister pressure is greater than or equal to the preset second pressure threshold, control the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy; wherein the preset second pressure threshold is greater than the preset first pressure threshold.

2. The method according to claim 1, characterized in that The method further comprises: When the first carbon canister pressure is greater than or equal to the preset first pressure threshold, processing is performed according to the preset carbon canister desorption strategy.

3. The method according to claim 1, characterized in that The determining, based on the fuel evaporation amount, the second carbon canister pressure of the vehicle after the next automatic start time, includes: obtaining a current monitored ambient temperature and a current forecasted ambient temperature of the vehicle, and determining a target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecasted ambient temperature; Acquiring driving information of the vehicle within a preset historical time period, and determining the vehicle driving time and vehicle parking time within the next automatic start time based on the driving information; The fuel evaporation amount is calculated based on the target ambient temperature, the vehicle driving time, and the vehicle parking time, and the second carbon canister pressure after the next automatic start time is determined based on the fuel evaporation amount.

4. The method according to claim 3, characterized in that The determining of the target ambient temperature for calculating the fuel evaporation amount based on the current monitored ambient temperature and the current forecasted ambient temperature includes: Calculating the absolute difference between the current monitored ambient temperature and the current forecasted ambient temperature; When the absolute difference is less than or equal to a preset difference threshold, obtaining the forecast target time period ambient temperature information, and determining the target ambient temperature based on the forecast target time period ambient temperature information; or, When the absolute difference is greater than a preset difference threshold, the maximum temperature value between the current monitored ambient temperature and the highest temperature value within a preset period is used as the target ambient temperature.

5. The method according to claim 1 or 2, characterized in that The processing according to the preset carbon canister desorption strategy includes: Obtaining the fuel level of the vehicle's fuel tank; Determining whether the fuel level in the vehicle's fuel tank is greater than or equal to a preset fuel tank fuel level threshold; When the fuel level in the vehicle tank is greater than or equal to the preset fuel level threshold, the carbon canister solenoid valve is controlled to open to start the parking heater to run for a preset time to perform carbon canister desorption processing.

6. The method according to claim 5, characterized in that After the carbon canister solenoid valve is controlled to open and operate for a preset time to perform the carbon canister desorption process, the method further includes: obtaining a third vehicle carbon canister pressure of the vehicle; Determining whether the third vehicle carbon canister pressure is less than or equal to a preset third pressure threshold; wherein the third pressure threshold is less than the first pressure threshold; When the third vehicle carbon canister pressure is less than or equal to the third pressure threshold, the parking heater is controlled to be turned off.

7. The method according to claim 6, characterized in that The method further comprises: When the third vehicle carbon canister pressure is greater than the third pressure threshold, the parking heater is controlled to continue operating for the preset time period.

8. A vehicle carbon canister desorption device, characterized in that: Applied to a vehicle, the method comprises: an acquisition module, configured to acquire, when the engine is off after the vehicle is started, a next automatic start time of the engine and a first carbon canister pressure of the vehicle; a first determining module, configured to determine whether the pressure of the first carbon canister is greater than or equal to a preset first pressure threshold; a determination module, configured to determine, when the pressure of the first carbon canister is less than the preset first pressure threshold, a second carbon canister pressure of the vehicle after the next automatic start time based on the fuel evaporation amount; a second determination module, configured to determine whether the pressure of the second carbon canister is greater than or equal to a preset second pressure threshold; wherein the preset second pressure threshold is greater than the preset first pressure threshold; The processing module is configured to control the vehicle to desorb the carbon canister according to a preset carbon canister desorption strategy when the second carbon canister pressure is greater than or equal to the preset second pressure threshold.

9. An electronic device, characterized in that: The electronic device comprises: processor; a memory for storing instructions executable by the processor; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method according to any one of claims 1 to 7.

10. A vehicle, characterized in that: Including the digital key-based vehicle management device as described in claim 8 or the electronic device as described in claim 9.

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