Carbon canister purge system of vehicle, vehicle and air supply control method of vehicle

Abstract

The application discloses a carbon canister desorption system of a vehicle, the vehicle and a gas supply control method of the vehicle, and belongs to the technical field of vehicles. The system comprises a carbon canister having a first port, a second port and a third port, the first port is used for being connected with an oil tank of the vehicle, and the second port is used for being connected with an air intake manifold of an engine of the vehicle; a gas supply device is used for supplying gas to a gas using device of the vehicle, the third port is connected with a gas supply pipeline of the gas supply device, and the gas supply device selectively communicates the carbon canister or the gas using device. The system can desorb the carbon canister through the gas supply device of the vehicle, and effectively improves the desorption effect of the carbon canister.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, and in particular relates to a carbon canister desorption system for a vehicle, a vehicle, and a method for controlling the air supply of a vehicle. Background Technology

[0002] Fuel evaporation emissions refer to the phenomenon of fuel vapor escaping from a vehicle's fuel supply system into the atmosphere, causing environmental pollution. The carbon canister, as a core component of the fuel evaporation leakage prevention system, effectively reduces fuel vapor pollution by adsorbing and storing fuel vapor and then directing it into the engine for combustion.

[0003] Once the carbon canister is saturated with fuel vapor, it needs to be desorbed and regenerated to maintain its normal operation. Currently, most methods involve periodically starting the engine to desorb the fuel vapor adsorbed in the carbon canister. However, this method is not very effective, and since hybrid vehicles do not use their engines frequently, starting the engine frequently to desorb the carbon canister would negatively impact the driving experience. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a carbon canister desorption system for a vehicle, a vehicle, and a vehicle air supply control method, which effectively improves the desorption and regeneration effect of the carbon canister.

[0005] In a first aspect, this application provides a carbon canister desorption system for a vehicle, the system comprising:

[0006] A carbon canister, the carbon canister having a first port, a second port and a third port, the first port being used to connect to the fuel tank of the vehicle, and the second port being used to connect to the intake manifold of the engine of the vehicle;

[0007] An air supply device is provided for supplying air to the vehicle's air-consuming device. The third port is connected to the air supply line of the air supply device, and the air supply device is selectively connected to the carbon canister or the air-consuming device.

[0008] According to the carbon canister desorption system of the vehicle in this application, by setting up a common air passage for the carbon canister and the air supply device, and using the vehicle's own air supply device to supply air to the carbon canister for desorption, the desorption effect of the carbon canister can be effectively improved and the overall vehicle manufacturing cost can be reduced.

[0009] According to one embodiment of this application, a first valve is provided between the first port and the oil tank, a second valve is provided between the second port and the intake manifold, and a third valve is provided between the third port and the air supply device;

[0010] The gas supply device is configured to operate when the second valve and the third valve are in the open state and the first valve is in the closed state, connecting to the carbon canister to desorb the carbon canister.

[0011] According to one embodiment of this application, the gas supply pipeline includes a first gas supply branch and a second gas supply branch, the third port is connected to the first gas supply branch, and the second gas supply branch is used to connect to the gas-using device.

[0012] According to one embodiment of this application, the end of the first gas supply branch away from the gas supply device is the exhaust end, the third valve is disposed on the first gas supply branch between the third port and the gas supply device, and a fourth valve is disposed on the first gas supply branch between the third port and the exhaust end;

[0013] The gas supply device is configured to vent gas when the first valve and the second valve are closed and the third valve and the fourth valve are open.

[0014] According to one embodiment of this application, an overflow valve is provided between the third port and the gas supply pipeline.

[0015] Secondly, this application provides a vehicle, including:

[0016] The carbon canister desorption system of the vehicle as described in the first aspect above;

[0017] The gas supply device is connected to the gas supply device of the carbon canister desorption system, and the gas supply device is used to supply gas to the gas supply device.

[0018] According to the vehicle of this application, by setting up a common air passage for the carbon canister and the air supply device, and using the vehicle's own air supply device to supply air to the carbon canister for desorption, the desorption effect of the carbon canister can be effectively improved and the overall vehicle manufacturing cost can be reduced.

[0019] According to one embodiment of this application, the vehicle has an air suspension system, and the air supply device is the compressor of the air suspension system.

[0020] According to one embodiment of this application, the gas usage priority of the gas-using device is greater than the gas usage priority of the carbon canister in the carbon canister desorption system.

[0021] Thirdly, this application provides a vehicle air supply control method, the vehicle including a carbon canister desorption system and an air supply device, the carbon canister desorption system including a carbon canister and an air supply device, the carbon canister having a first port, a second port and a third port, the first port being connected to the vehicle's fuel tank, the second port being connected to the intake manifold of the vehicle's engine, and the third port being connected to the air supply line of the air supply device.

[0022] The method includes:

[0023] The gas supply device is controlled to selectively connect to the carbon canister or the gas consumption device.

[0024] According to the vehicle air supply control method of this application, by sharing an air circuit between the carbon canister and the air-using device, and using the vehicle's own air supply device to supply air to the carbon canister for desorption, the desorption effect of the carbon canister can be effectively improved and the overall vehicle manufacturing cost can be reduced.

[0025] According to one embodiment of this application, a first valve is provided between the first port and the fuel tank, a second valve is provided between the second port and the intake manifold, and a third valve is provided between the third port and the air supply device, controlling the air supply device to connect to the carbon canister, including:

[0026] Once the conditions for carbon canister desorption are met, the gas supply device is controlled to operate, and the first valve is controlled to be closed while the second and third valves are controlled to be open, so as to desorb the carbon canister.

[0027] According to one embodiment of this application, before controlling the operation of the gas supply device and controlling the first valve to be in a closed state and the second valve and the third valve to be in an open state, the method further includes:

[0028] Obtain the remaining intake airflow of the engine;

[0029] Based on the remaining available airflow, determine the air supply operating parameters for the air supply device;

[0030] Controlling the operation of the gas supply device includes:

[0031] The gas supply device is controlled to operate according to the gas supply parameters.

[0032] According to one embodiment of this application, the method further includes:

[0033] Acquire the vehicle's driving status data and engine status data;

[0034] Based on the driving status data and the engine status data, determine whether the carbon canister desorption conditions are met.

[0035] According to one embodiment of this application, the gas consumption priority of the gas-using device is greater than the gas consumption priority of the carbon canister in the carbon canister desorption system, and controlling the gas supply device to selectively connect to the carbon canister or the gas-using device includes:

[0036] When it is determined that the gas-consuming device is using gas, the gas supply device is controlled to connect to the gas-consuming device.

[0037] According to one embodiment of this application, the gas consumption priority of the gas-using device is greater than the gas consumption priority of the carbon canister in the carbon canister desorption system, and controlling the gas supply device to selectively connect to the carbon canister or the gas-using device includes:

[0038] If it is determined that the gas supply device is not using gas, but the carbon canister is using gas, the gas supply device is controlled to connect to the carbon canister.

[0039] According to one embodiment of this application, after controlling the gas supply device to connect to the carbon canister, the method further includes:

[0040] When the desorption time of the carbon canister reaches the first target time, the gas supply device is controlled to disconnect from the carbon canister.

[0041] According to one embodiment of this application, the method further includes:

[0042] If the cumulative desorption time of the carbon canister in the current cycle reaches the second target time, the gas supply device will no longer connect to the carbon canister in the current cycle.

[0043] Fourthly, this application provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the vehicle air supply control method as described in the third aspect above.

[0044] Fifthly, this application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the vehicle air supply control method as described in the third aspect above.

[0045] In a sixth aspect, this application provides a computer program product, including a computer program that, when executed by a processor, implements the vehicle air supply control method as described in the first aspect above.

[0046] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0047] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0048] Figure 1 This is a schematic diagram of the structure of the carbon canister desorption system for a vehicle provided in an embodiment of this application;

[0049] Figure 2 This is one of the schematic flowcharts of the vehicle air supply control method provided in the embodiments of this application;

[0050] Figure 3 This is a second schematic flowchart of the vehicle air supply control method provided in the embodiments of this application;

[0051] Figure 4 This is the third schematic flowchart of the vehicle air supply control method provided in the embodiments of this application;

[0052] Figure 5 This is the fourth schematic flowchart of the vehicle air supply control method provided in the embodiments of this application;

[0053] Figure 6 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0054] Figure label:

[0055] Carbon canister 110, fuel tank 120, intake manifold 130, air supply device 210, air consumption device 220.

[0056] First valve 310, second valve 320, third valve 330, fourth valve 340, overflow valve 350. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0058] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0059] Fuel evaporation emissions refer to the phenomenon of fuel vapor escaping from a vehicle's fuel supply system into the atmosphere, which can cause environmental pollution.

[0060] Fuel vapor in a vehicle originates from components such as the fuel tank, fuel filter, carburetor, and fuel lines, and is primarily generated in the following ways:

[0061] 1. Operational losses: During vehicle operation, the heat generated by the engine accelerates the formation of fuel vapor. If the fuel system's storage capacity or the fuel evaporation control system's processing capacity is insufficient, excess fuel vapor will escape from the system.

[0062] 2. Heat loss: When the vehicle stops running, the temperature of the fuel system remains high, resulting in the generation of fuel vapor.

[0063] 3. Daytime ventilation loss: On days with higher temperatures, parked vehicles are affected by the atmospheric temperature, which leads to the generation of fuel vapor. When the amount of fuel vapor exceeds the capacity of the fuel system and the evaporation control system, fuel evaporation emissions will occur.

[0064] IV. Permeation and Migration Losses: Non-metallic components in the fuel system, such as fuel tanks, fuel lines, joints, and seals, may allow fuel vapors to permeate into the atmosphere due to their material properties.

[0065] In addition, when the system stores more fuel vapor than its capacity, it may also lead to fuel vapor migration loss.

[0066] As a core component of the system that prevents fuel evaporation and leakage, the carbon canister effectively reduces fuel vapor pollution to the atmosphere by adsorbing and storing fuel vapor and then introducing it into the engine for combustion.

[0067] Once the carbon canister is saturated with fuel vapor, it needs to be desorbed and regenerated to maintain its normal operation.

[0068] Currently, most methods involve periodically starting the engine to desorb the fuel vapors adsorbed in the carbon canister, but these methods are not very effective.

[0069] This application provides a carbon canister desorption system for a vehicle, which can effectively improve the desorption and regeneration effect of the carbon canister 110.

[0070] The carbon canister desorption system, vehicle, vehicle air supply control method, electronic equipment, and readable storage medium for vehicles provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0071] like Figure 1 As shown, the vehicle's carbon canister desorption system includes a carbon canister 110 and an air supply device 210.

[0072] Among them, the carbon canister 110 is used to adsorb and store fuel vapor, and the carbon canister 110 can be a canister filled with adsorbent materials such as activated carbon.

[0073] Understandably, the carbon canister 110 can be installed in the pipeline between the vehicle's fuel tank 120 and the engine. Fuel vapor in the fuel tank 120 enters the carbon canister 110 to be adsorbed and stored. When the engine is started, the fuel vapor in the carbon canister 110 can enter the engine to participate in combustion.

[0074] In this embodiment, the carbon canister 110 has a first port, a second port and a third port. The first port is used to connect to the vehicle's fuel tank 120, and the second port is used to connect to the vehicle's engine intake manifold 130.

[0075] In some embodiments, a first valve 310 may be provided between the first port and the fuel tank 120, and a second valve 320 may be provided between the second port and the intake manifold 130.

[0076] In actual operation, when the first valve 310 is in the open state, the pipeline between the fuel tank 120 and the carbon canister 110 is connected, and the fuel vapor in the fuel tank 120 can enter the carbon canister 110.

[0077] When the second valve 320 is in the open position, the pipeline between the carbon canister 110 and the engine is connected, and the fuel vapor adsorbed by the carbon canister 110 can enter the engine through the intake manifold 130 to participate in combustion.

[0078] In this embodiment, the gas supply device 210 of the carbon canister desorption system is used to supply gas to the gas consumption device 220 of the vehicle.

[0079] It should be noted that the gas supply device 210 is the gas source of the vehicle itself. Apart from the carbon canister 110, the gas supply device 210 can supply gas to the gas-consuming device 220 of the vehicle to meet the operating needs of the gas-consuming device 220.

[0080] In actual implementation, the air supply device 210 can be the air source of the vehicle itself, such as the air source of the air suspension system, the air source of the seat massage system, or the air source of the side wing support system.

[0081] In this embodiment, the carbon canister 110 has a third port, which is connected to the gas supply line of the gas supply device 210.

[0082] In some embodiments, a third valve 330 is provided between the third port and the gas supply device 210.

[0083] In actual operation, when the third valve 330 is in the open state, the pipeline between the gas supply device 210 and the carbon canister 110 is connected, and the gas supply device 210 can provide positive or negative pressure to the carbon canister 110 to desorb and regenerate the carbon canister 110.

[0084] It should be noted that the gas supply device 210 is selectively connected to the carbon canister 110 or the gas consumption device 220 to supply gas for desorption of the carbon canister 110 or to supply gas for the gas consumption device 220.

[0085] In this embodiment, the gas supply device 210 is configured to operate when the second valve 320 and the third valve 330 are in the open state and the first valve 310 is in the closed state, connecting the carbon canister 110 to desorb the carbon canister 110.

[0086] It is understandable that the first valve 310, the second valve 320 and the third valve 330 can be valves such as solenoid valves that control the on-off state. They all have open and closed states. When the valve is in the open state, the pipeline where the valve is located is connected. When the valve is in the closed state, the pipeline where the valve is located is disconnected.

[0087] In this embodiment, the first valve 310 is closed, the pipeline between the fuel tank 120 and the carbon canister 110 is disconnected, and the desorbed fuel vapor will not enter the fuel tank 120 and contaminate it. The second valve 320 and the third valve 330 are open, the pipeline between the air supply device 210, the carbon canister 110 and the engine is connected, the air supply device 210 is turned on to supply air to the carbon canister 110, desorbing the fuel vapor from the carbon canister 110, and the fuel vapor enters the generator to participate in combustion.

[0088] In related technologies, the adsorbed fuel vapors are desorbed by periodically starting the engine. However, insufficient engine start time leads to poor desorption effect. Furthermore, as the battery capacity of hybrid vehicles gradually increases, the vehicles operate more in pure electric mode, and the engine is used less frequently. Fuel vapors may be adsorbed for a long time, posing a risk of excessive pollutant emissions. In addition, frequent engine starts to desorb carbon canisters can also affect the driving experience.

[0089] In this embodiment, the air supply device 210 selectively connects to the carbon canister 110 or the air consumption device 220, supplying air to the carbon canister 110 through the vehicle's own air supply device 210 to actively desorb the carbon canister 110. Compared with the related technology of directly using the engine's negative pressure to desorb the carbon canister 110, it has the advantages of greater power and stronger desorption backflushing capability. For hybrid vehicles, desorption can be performed using the vehicle's own air supply device 210 when the engine is not used frequently, effectively improving the desorption effect of the carbon canister 110, reducing the risk of pollutant emissions exceeding the standard, and eliminating the need to start the engine to desorb the carbon canister 110. At the same time, the air consumption device 220 and the carbon canister 110 share the same air circuit, which can also reduce the overall vehicle manufacturing cost.

[0090] According to the vehicle carbon canister desorption system provided in the embodiments of this application, by setting a common air passage for the carbon canister 110 and the air supply device 220, and using the vehicle's own air supply device 210 to supply air to the carbon canister 110 to desorb the carbon canister 110, the desorption effect of the carbon canister 110 can be effectively improved and the overall vehicle manufacturing cost can be reduced.

[0091] In some embodiments, the gas supply line of the gas supply device 210 includes a first gas supply branch and a second gas supply branch, a third port is connected to the first gas supply branch, and the second gas supply branch is used to connect to the gas user device 220.

[0092] In this embodiment, when the third valve 330 is in the open state, the pipeline between the gas supply device 210 and the carbon canister 110 is connected, and the carbon canister 110 can be desorbed.

[0093] When the third valve 330 is closed, the pipeline between the gas supply device 210 and the carbon canister 110 is disconnected, and gas can be supplied to the gas user device 220 through the second gas supply branch. This can avoid the mutual influence of the airflow in the first gas supply branch and the second gas supply branch, and improve the stability of the desorption of the carbon canister 110 and the gas supply of the gas user device 220.

[0094] In some embodiments, the end of the first gas supply branch away from the gas supply device 210 is the exhaust end, the third valve 330 is disposed on the first gas supply branch between the third port and the gas supply device 210, and the first gas supply branch between the third port and the exhaust end is provided with a fourth valve 340.

[0095] The fourth valve 340 is a component used to vent the gas supply device 210, and can be a valve that controls the on / off state, such as a solenoid valve.

[0096] In this embodiment, the gas supply device 210 is configured to exhaust gas when the first valve 310 and the second valve 320 are closed and the third valve 330 and the fourth valve 340 are open.

[0097] Understandably, with the first valve 310 closed, the pipeline between the fuel tank 120 and the carbon canister 110 is disconnected. With the second valve 320 closed, the pipeline between the carbon canister 110 and the engine is disconnected. Therefore, the air supplied by the air supply device 210 will not pass through the carbon canister 110, nor will it enter the fuel tank 120 or the engine. With the third valve 330 and the fourth valve 340 open, the remaining gas in the air supply device 210 is discharged through the exhaust end of the first air supply branch, maintaining the air pressure balance of the air supply device 210 and preventing damage caused by excessive air pressure.

[0098] In some embodiments, an overflow valve 350 is provided between the third port and the gas supply line.

[0099] In this embodiment, an overflow valve 350 is provided between the third port and the gas supply line. The overflow valve 350 can control the pressure of the carbon canister desorption system, protect the carbon canister desorption system from high pressure damage, and improve the safety of the carbon canister desorption system.

[0100] In actual implementation, the overflow valve 350 can be installed on the pipeline from the third port to the first gas supply branch.

[0101] This application also provides a vehicle.

[0102] The vehicle includes a carbon canister desorption system as described above and an air supply device 220. The air supply device 220 is connected to an air supply device 210 of the carbon canister desorption system, and the air supply device 210 is used to supply air to the air supply device 220.

[0103] Understandably, the vehicle can be a gasoline-powered car with an engine or a hybrid vehicle.

[0104] With the first valve 310 closed, the pipeline between the fuel tank 120 and the carbon canister 110 is disconnected, preventing the desorbed fuel vapor from entering and contaminating the fuel tank 120. With the second valve 320 and the third valve 330 open, the pipeline between the air supply device 210, the carbon canister 110, and the engine is connected. The air supply device 210 is activated to supply air to the carbon canister 110, desorbing the fuel vapor from the carbon canister 110. The fuel vapor then enters the generator to participate in combustion.

[0105] The carbon canister 110 is supplied with air by the vehicle's own air supply device 210 to actively desorb the carbon canister 110. Compared with the method of directly using the engine's negative pressure to desorb the carbon canister 110 in related technologies, it has the advantages of greater power and stronger desorption backflushing ability. It can effectively improve the desorption effect of the carbon canister 110 when the engine start time is insufficient, and reduce the risk of pollutant emissions exceeding the standard. The air supply device 220 and the carbon canister 110 share the same air passage, which can also reduce the overall vehicle manufacturing cost.

[0106] According to the vehicle provided in the embodiments of this application, by setting a common air passage for the carbon canister 110 and the air supply device 220, and using the vehicle's own air supply device 210 to supply air to the carbon canister 110 to desorb the carbon canister 110, the desorption effect of the carbon canister 110 can be effectively improved and the overall vehicle manufacturing cost can be reduced.

[0107] In some embodiments, the vehicle has an air suspension system, and the air supply device 210 is a compressor for the air suspension system.

[0108] The air suspension system may include components such as a compressor, air springs, and an air tank.

[0109] The compressor produces compressed air, which can be stored in an air tank. When the vehicle height needs to be adjusted, the control unit controls the air to enter or exit the air springs based on the signal from the height sensor, thereby adjusting the vehicle height. The air springs replace the traditional metal springs to provide shock absorption and support for the vehicle.

[0110] In this embodiment, the carbon canister desorption system uses the compressor of the air suspension system as the air supply device 210. The compressor can provide a wide range of pressure and flow. The compressor supplies air to the carbon canister 110, which can effectively improve the desorption and regeneration efficiency of the carbon canister 110 and meet more stringent emission standards.

[0111] In actual operation, the compressor can draw in air from the atmosphere to provide positive air pressure to the carbon canister 110, or the pipeline connection position can be changed. For example, the carbon canister 110 can be connected to the pipeline between the air spring and the air tank, and the compressor can provide negative pressure to the carbon canister 110 to desorb and regenerate the carbon canister 110.

[0112] In some embodiments, the gas usage priority of the gas-using device 220 is greater than the gas usage priority of the carbon canister 110 in the carbon canister desorption system.

[0113] In this embodiment, the gas consumption priority of the carbon canister 110 is lower than that of the gas consumption device 220. When it is determined that the gas consumption device 220 does not need gas, the gas supply device 210 is controlled to operate, and the first valve 310 is controlled to be closed while the second valve 320 and the third valve 330 are controlled to be open, so as to desorb the carbon canister 110 and prioritize the gas consumption needs of the gas consumption device 220.

[0114] This application also provides a method for controlling the air supply of a vehicle.

[0115] The vehicle includes a carbon canister desorption system and a gas supply device 220.

[0116] The carbon canister desorption system includes a carbon canister 110 and an air supply device 210. The carbon canister 110 has a first port, a second port and a third port. The first port is connected to the vehicle's fuel tank 120, the second port is connected to the vehicle's engine intake manifold 130, and the third port is connected to the air supply line of the air supply device 210.

[0117] In some embodiments, a first valve 310 may be provided between the first port and the oil tank 120, a second valve 320 may be provided between the second port and the intake manifold 130, and a third valve 330 may be provided between the third port and the air supply device 210.

[0118] The first port is connected to the vehicle's fuel tank 120 via a first valve 310, the second port is connected to the vehicle's engine intake manifold 130 via a second valve 320, and the third port is connected to the air supply line of the air supply device 210 via a third valve 330. The vehicle air supply control method provided in this application embodiment can be executed by an electronic device or a functional module or entity within an electronic device capable of implementing the vehicle air supply control method.

[0119] like Figure 2 As shown, the air supply control method of this vehicle includes:

[0120] Step S20: Control the gas supply device 210 to selectively connect to the carbon canister 110 or the gas consumption device 220.

[0121] In this step, the gas supply device 210 can be controlled to selectively connect to the carbon canister 110 or the gas consumption device 220 according to the actual gas demand of the vehicle, to supply gas for desorption of the carbon canister 110 or to supply gas for the gas consumption device 220.

[0122] According to the vehicle air supply control method provided in the embodiments of this application, by sharing an air circuit between the carbon canister 110 and the air consumption device 220, the air supply device 210 is controlled to selectively connect to the carbon canister 110 or the air consumption device 220, and the vehicle's own air supply device 210 is used to supply air to the carbon canister 110 to desorb the carbon canister 110, which can effectively improve the desorption effect of the carbon canister 110 and reduce the overall vehicle manufacturing cost.

[0123] In some embodiments, controlling the gas supply device 210 to connect to the carbon canister 110 may include:

[0124] When the conditions for desorption of carbon canister 110 are met, the gas supply device 210 is controlled to operate, and the first valve 310 is controlled to be closed while the second valve 320 and the third valve 330 are controlled to be open, so as to desorb carbon canister 110.

[0125] In this embodiment, when the desorption conditions of the carbon canister 110 are met, the carbon canister 110 desorption operation is performed, the gas supply device 210 is controlled to operate, and the first valve 310 is controlled to be closed while the second valve 320 and the third valve 330 are controlled to be open; when the desorption conditions of the carbon canister 110 are not met, the carbon canister 110 desorption operation is not performed.

[0126] In practice, the desorption conditions of the carbon canister 110 can be determined based on the adsorption state of the carbon canister 110, the engine's operating state, and the vehicle's driving state.

[0127] When the desorption conditions of the carbon canister 110 are met, the first valve 310 is closed, the pipeline between the fuel tank 120 and the carbon canister 110 is disconnected, and the desorbed fuel vapor will not enter the fuel tank 120 and contaminate it. The second valve 320 and the third valve 330 are open, the pipeline between the air supply device 210, the carbon canister 110 and the engine is connected, the air supply device 210 is turned on to supply air to the carbon canister 110, desorbing the fuel vapor from the carbon canister 110, and the fuel vapor enters the generator to participate in combustion.

[0128] In some embodiments, before controlling the operation of the gas supply device 210 and controlling the first valve 310 to be closed and the second valve 320 and the third valve 330 to be open, the method further includes:

[0129] Obtain the remaining intake airflow of the engine;

[0130] Based on the remaining available airflow, determine the air supply operating parameters for the air supply device 210.

[0131] Controlling the operation of the gas supply device 210 includes:

[0132] Control the operation of the gas supply device 210 according to the gas supply operating parameters.

[0133] It should be noted that the desorption of the carbon canister 110 is carried out while the engine is running. The negative pressure generated by the engine can draw some of the fuel vapor in the carbon canister 110 into the engine to participate in combustion.

[0134] In this embodiment, the remaining intake flow of the engine can be calculated based on the upper limit of the intake flow during engine operation and the engine's own intake flow during operation. Based on the remaining intake flow, the air supply operating parameters of the air supply device 210 are determined. The air supply device 210 operates according to the air supply operating parameters, blowing the remaining fuel vapor in the carbon canister 110 into the engine to participate in combustion, thereby improving the desorption effect of the carbon canister 110 while ensuring the safe operation of the engine.

[0135] Taking the air supply device 210 as an example, which is the compressor of the air suspension system.

[0136] With the engine running, the remaining intake air flow of the engine is obtained. Based on the remaining intake air flow, the compressor speed and duty cycle and other air supply operating parameters are determined. The compressor operates according to the air supply operating parameters to supply air for desorption of the carbon canister 110.

[0137] In some embodiments, the vehicle's air supply control method may further include:

[0138] Acquire vehicle driving status data and engine status data;

[0139] Based on driving status data and engine status data, determine whether the carbon canister 110 desorption conditions are met.

[0140] The vehicle's driving status data can include data that characterizes the vehicle's driving status, such as vehicle speed and mileage, while the engine status data can include data that characterizes the engine's operating status, such as engine speed and intake pressure.

[0141] In this embodiment, when the driving status data meets the corresponding preset data range and the engine status data also meets the corresponding preset data range, it is determined that the carbon canister 110 desorption condition is met. When the driving status data does not meet the preset data range or the engine status data does not meet the preset data range, it is determined that the carbon canister 110 desorption condition is not met.

[0142] It should be noted that by using vehicle driving status data and engine status data, it is determined whether the desorption conditions of the carbon canister 110 are met, and then the carbon canister 110 is desorbed. This improves the desorption effect while ensuring the stability of vehicle and engine operation.

[0143] Taking the air supply device 210 as an example of an air suspension system compressor, a specific embodiment will be introduced.

[0144] like Figure 4 As shown, it collects vehicle speed, engine speed signals, and initial engine intake air flow signals.

[0145] Based on the above signals, the engine intake airflow is confirmed without affecting normal driving conditions. When the vehicle speed reaches the preset speed and the engine speed reaches the preset speed, the carbon canister 110 desorption condition is met. Based on the initial intake airflow, the engine intake airflow, i.e. the remaining intake airflow of the engine, is calculated.

[0146] Start the compressor and calculate the compressor speed and duty cycle based on the remaining intake air flow of the engine.

[0147] Close the first valve 310, disconnect the pipeline between the fuel tank 120 and the carbon canister 110, open the corresponding solenoid valves (the second valve 320 and the third valve 330), and use the positive pressure generated by the compressor to backflush and desorb the fuel vapor attached to the carbon canister 110. The mixture of gas and fuel vapor enters the intake manifold 130 of the engine to participate in combustion.

[0148] By controlling the compressor's running time and the amount of backflushing gas, the process stops once the desorption standard is met.

[0149] In some embodiments, the gas consumption priority of the gas-using device 220 is greater than the gas consumption priority of the carbon canister 110 in the carbon canister desorption system. Step S20, controlling the gas supply device 210 to selectively connect to the carbon canister 110 or the gas-using device 220, includes:

[0150] When it is determined that the gas-consuming device 220 needs gas, the gas supply device 210 is controlled to connect to the gas-consuming device 220.

[0151] In this embodiment, the gas consumption priority of the gas consumption device 220 is higher than that of the carbon canister 110. When it is determined that the gas consumption device 220 needs gas, the gas supply device 210 is controlled to operate and the third valve 330 is controlled to be closed, so as to prioritize meeting the gas consumption needs of the gas consumption device 220.

[0152] In some embodiments, the gas consumption priority of the gas-using device 220 is greater than the gas consumption priority of the carbon canister 110 in the carbon canister desorption system. Step S20, controlling the gas supply device 210 to selectively connect to the carbon canister 110 or the gas-using device 220, includes:

[0153] If it is determined that the gas-using device 220 is not using gas, but the carbon canister 110 is using gas, the gas supply device 210 is connected to the carbon canister 110.

[0154] In this embodiment, the gas supply device 210 is controlled to operate, and the first valve 310 is controlled to be closed while the second valve 320 and the third valve 330 are controlled to be open. The gas supply device 210 is connected to the carbon canister 110 to desorb the carbon canister 110.

[0155] In this embodiment, the gas consumption priority of the carbon canister 110 is lower than that of the gas consumption device 220. When it is determined that the gas consumption device 220 does not consume gas, the gas supply device 210 is then controlled to operate, and the first valve 310 is controlled to be closed while the second valve 320 and the third valve 330 are controlled to be open, so as to desorb the carbon canister 110.

[0156] In some embodiments, after the air supply device 210 is connected to the carbon canister 110, the vehicle's air supply control method may further include:

[0157] When the desorption time of the carbon canister 110 reaches the first target time, the control gas supply device 210 disconnects from the carbon canister 110.

[0158] For example, such as Figure 3 As shown, in step S31, the gas supply device 210 is connected to the carbon canister 110.

[0159] Step S32: When the desorption time of the carbon canister 110 reaches the first target time, control the gas supply device 210 to disconnect from the carbon canister 110.

[0160] In step S32, when the desorption time of the carbon canister 110 reaches the first target time, the second valve 320 and the third valve 330 are controlled to be closed, the gas supply device 210 is controlled to stop supplying gas, and the gas supply device 210 is disconnected from the carbon canister 110.

[0161] The first target duration is a preset threshold value for the duration of a single desorption operation.

[0162] In this embodiment, when the desorption time of the carbon canister 110 reaches the first target time, the desorption operation ends, the second valve 320 and the third valve 330 are controlled to be closed, and the gas supply device 210 is controlled to stop supplying gas.

[0163] Understandably, the first target duration can be set according to parameters such as the adsorption and desorption characteristics of the carbon canister 110 itself and the gas flow rate that the gas supply device 210 can provide, so that a single desorption operation can effectively desorb the fuel vapor adsorbed by the carbon canister 110.

[0164] In some embodiments, the vehicle's air supply control method may further include:

[0165] If the cumulative desorption time of carbon canister 110 in the current cycle is determined to have reached the second target time, the gas supply device 210 in the current cycle will no longer connect to carbon canister 110.

[0166] It should be noted that the entire life cycle of the carbon canister 110 can be divided into multiple cycles, and the second target duration is a preset critical value for the cumulative duration of desorption operations in each cycle.

[0167] In this embodiment, the desorption time of the carbon canister 110 is accumulated in each cycle. If the accumulated desorption time of the carbon canister 110 in the current cycle reaches the preset second target time, and the desorption and regeneration requirements of the carbon canister 110 in the current cycle are met, the backflushing desorption function will not be started in the current cycle, and the gas supply device 210 will no longer be connected to the carbon canister 110.

[0168] Taking the air supply device 210 as an example of an air suspension system compressor, a specific embodiment will be introduced.

[0169] like Figure 5 As shown, when the active desorption function of S1 and carbon canister 110 is activated, it is first determined whether the air suspension system is in or about to be in working state. Among them, the air usage priority of carbon canister 110 should be lower than the air usage priority of the air suspension system.

[0170] S2. If the air suspension system does not need to work at this time, proceed to the next step of carbon canister 110 desorption and regeneration function.

[0171] S3. Start the compressor and open the gas supply control valve (i.e., the third valve 330) and the carbon canister 110 control valve (i.e., the second valve 320).

[0172] S4. The backflush flow rate is controlled by the compressor speed and duty cycle to ensure that the backflush gas flow rate does not affect the normal operation of the engine.

[0173] S5. After the backflushing desorption set time t (i.e. the first target duration) is reached, close the gas supply control valve and the carbon canister 110 control valve, stop the compressor, and end this desorption function.

[0174] When the cumulative desorption time in the current cycle reaches the second target duration, the desorption and regeneration requirements of carbon canister 110 in this cycle are met, and the backflushing desorption function will not be activated again in the current cycle.

[0175] S6. If the air suspension system needs to be raised or lowered or replenished with air at this time, the functional requirements of the air suspension system shall be given priority.

[0176] Start the compressor and keep the gas supply solenoid valve (i.e., the third valve 330) for desorption of carbon canister 110 closed.

[0177] S7. Detect the working status of the air suspension system, control the compressor start time according to the needs, and complete the suspension height adjustment and air tank filling and discharging functions.

[0178] S8. After the air suspension system has finished using air, determine whether the carbon canister 110 desorption function needs to be activated. If yes, proceed to S2; otherwise, end the desorption and regeneration function.

[0179] In this embodiment, the carbon canister 110 is desorbed and regenerated using a shared air path. Compared with the desorption method using engine negative pressure in related technologies, this method has the advantages of greater power and stronger desorption backflushing capability, which can effectively improve the desorption and regeneration effect of the carbon canister 110. The shared air path can also reduce the overall vehicle manufacturing cost.

[0180] In some embodiments, such as Figure 6As shown, this application embodiment also provides an electronic device 600, including a processor 601, a memory 602, and a computer program stored in the memory 602 and executable on the processor 601. When the program is executed by the processor 601, it implements the various processes of the above-described vehicle air supply control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0181] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above.

[0182] This application also provides a non-transitory computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the various processes of the above-described vehicle air supply control method embodiment and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0183] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0184] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described air supply control method for a vehicle.

[0185] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0186] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described vehicle air supply control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0187] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0188] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0189] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0190] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0191] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0192] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A carbon canister desorption system for a vehicle, characterized in that, include: A carbon canister, the carbon canister having a first port, a second port and a third port, the first port being used to connect to the fuel tank of the vehicle, and the second port being used to connect to the intake manifold of the engine of the vehicle; An air supply device is provided for supplying air to the vehicle's air-consuming device. The third port is connected to the air supply line of the air supply device, and the air supply device is selectively connected to the carbon canister or the air-consuming device.

2. The carbon canister desorption system for vehicles according to claim 1, characterized in that, A first valve is provided between the first port and the oil tank, a second valve is provided between the second port and the intake manifold, and a third valve is provided between the third port and the air supply device; The gas supply device is configured to operate when the second valve and the third valve are in the open state and the first valve is in the closed state, connecting to the carbon canister to desorb the carbon canister.

3. The carbon canister desorption system for vehicles according to claim 2, characterized in that, The gas supply pipeline includes a first gas supply branch and a second gas supply branch. The third port is connected to the first gas supply branch, and the second gas supply branch is used to connect to the gas-using device.

4. The carbon canister desorption system for vehicles according to claim 3, characterized in that, The end of the first gas supply branch furthest from the gas supply device is the exhaust end. The third valve is located on the first gas supply branch between the third port and the gas supply device. A fourth valve is provided on the first gas supply branch between the third port and the exhaust end. The gas supply device is configured to vent gas when the first valve and the second valve are closed and the third valve and the fourth valve are open.

5. The carbon canister desorption system for a vehicle according to any one of claims 1-4, characterized in that, An overflow valve is provided between the third port and the gas supply pipeline.

6. A vehicle, characterized in that, include: Carbon canister desorption system for a vehicle as described in any one of claims 1-5; The gas supply device is connected to the gas supply device of the carbon canister desorption system, and the gas supply device is used to supply gas to the gas supply device.

7. The vehicle according to claim 6, characterized in that, The vehicle has an air suspension system, and the air supply device is the compressor of the air suspension system.

8. The vehicle according to claim 6 or 7, characterized in that, The gas consumption priority of the gas consumption device is higher than the gas consumption priority of the carbon canister in the carbon canister desorption system.

9. A method for controlling the air supply of a vehicle, characterized in that, The vehicle includes a carbon canister desorption system and an air supply device. The carbon canister desorption system includes a carbon canister and an air supply device. The carbon canister has a first port, a second port and a third port. The first port is connected to the vehicle's fuel tank, the second port is connected to the intake manifold of the vehicle's engine, and the third port is connected to the air supply line of the air supply device. The method includes: The gas supply device is controlled to selectively connect to the carbon canister or the gas consumption device.

10. The vehicle air supply control method according to claim 9, characterized in that, A first valve is provided between the first port and the fuel tank, a second valve is provided between the second port and the intake manifold, and a third valve is provided between the third port and the air supply device, controlling the air supply device to connect to the carbon canister, including: Once the conditions for carbon canister desorption are met, the gas supply device is controlled to operate, and the first valve is controlled to be closed while the second and third valves are controlled to be open, so as to desorb the carbon canister.

11. The air supply control method for a vehicle according to claim 10, characterized in that, Before controlling the operation of the gas supply device and controlling the first valve to be in the closed state and the second valve and the third valve to be in the open state, the method further includes: Obtain the remaining intake airflow of the engine; Based on the remaining available airflow, determine the air supply operating parameters for the air supply device; Controlling the operation of the gas supply device includes: The gas supply device is controlled to operate according to the gas supply parameters.

12. The vehicle air supply control method according to claim 10, characterized in that, The method further includes: Acquire the vehicle's driving status data and engine status data; Based on the driving status data and the engine status data, determine whether the carbon canister desorption conditions are met.

13. The vehicle air supply control method according to claim 9, characterized in that, The gas consumption priority of the gas-using device is higher than the gas consumption priority of the carbon canister in the carbon canister desorption system, and controlling the gas supply device to selectively connect to the carbon canister or the gas-using device includes: When it is determined that the gas-consuming device is using gas, the gas supply device is controlled to connect to the gas-consuming device.

14. The vehicle air supply control method according to claim 9, characterized in that, The gas consumption priority of the gas-using device is higher than the gas consumption priority of the carbon canister in the carbon canister desorption system, and controlling the gas supply device to selectively connect to the carbon canister or the gas-using device includes: If it is determined that the gas supply device is not using gas, but the carbon canister is using gas, the gas supply device is controlled to connect to the carbon canister.

15. The air supply control method for a vehicle according to any one of claims 9-14, characterized in that, After controlling the gas supply device to connect to the carbon canister, the method further includes: When the desorption time of the carbon canister reaches the first target time, the gas supply device is controlled to disconnect from the carbon canister.

16. The air supply control method for a vehicle according to any one of claims 9-14, characterized in that, The method further includes: If the cumulative desorption time of the carbon canister in the current cycle reaches the second target time, the gas supply device will no longer connect to the carbon canister in the current cycle.

17. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the air supply control method for the vehicle as described in any one of claims 9-16.

18. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the air supply control method for a vehicle as described in any one of claims 9-16.

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