A moisture regulating device, vehicle and humidity control method

Abstract

This application relates to a humidity regulating device. The humidity regulating device includes: an air inlet pipe, a compressor, an air pump, a switching circuit, an evaporation chamber, a pressure water tank, and a return water tank; the first end of the air inlet pipe is connected to the first end of the switching circuit via the air pump; the two second ends of the switching circuit are respectively connected to the first end of the pressure water tank and the air inlet of the evaporation chamber; the second end of the pressure water tank is connected to the return water tank; the pressure water tank is also connected to the water inlet of the evaporation chamber; the air outlet of the evaporation chamber is connected to the inlet of the compressor via the second end of the air inlet pipe; and the return outlet of the evaporation chamber is connected to the return water tank; when the switching circuit is open, the liquid in the pressure water tank can be forced into the evaporation chamber; when the switching circuit is open, the gas in the evaporation chamber can be transmitted to the evaporation chamber, so that water vapor is generated in the evaporation chamber and output to the compressor. The humidity regulating device has a simple structure, occupies little space, and has low cost.

Description

Technical Field

[0001] This application relates to the automotive field, and in particular to a humidity regulating device, a vehicle, and a humidity control method. Background Technology

[0002] The internal combustion engine industry has made relatively mature progress in research on reducing nitrogen oxide emissions, increasing power density, and improving knocking by injecting water into the intake air. Tests have shown that the intake air humidity of diesel engines has a significant impact on the overall fuel consumption and nitrogen oxide emissions. By adding a humidity regulating device to the engine intake passage, the engine can control the intake air humidity and achieve the best overall effect in different scenarios.

[0003] However, traditional humidity control devices are complex, costly, and space-consuming, making them unsuitable for practical application in engines. Summary of the Invention

[0004] Therefore, it is necessary to provide a device and control method that can simultaneously adjust the engine intake air humidity and combustion timing to achieve the overall optimal balance, addressing the aforementioned technical problems.

[0005] In a first aspect, embodiments of this application provide a humidity regulating device, characterized in that it comprises: an air inlet pipe, an air compressor, an air pump, a switching circuit, an evaporation chamber, a pressure water tank, and a return water tank; wherein,

[0006] The first end of the air inlet pipe is connected to the first end of the switching circuit via the air pump. The two second ends of the switching circuit are respectively connected to the first end of the pressure tank and the air inlet of the evaporation chamber. The second end of the pressure tank is connected to the return water tank. The pressure tank is also connected to the water inlet of the evaporation chamber. The air outlet of the evaporation chamber is connected to the inlet of the compressor via the second end of the air inlet pipe. The return outlet of the evaporation chamber is connected to the return water tank.

[0007] When the switching circuit connects the water passage where the pressure tank is located, the air pump is used to increase the internal pressure of the pressure tank and force the liquid in the pressure tank to the evaporation chamber. When the liquid level in the evaporation chamber exceeds the maximum water level, the liquid in the evaporation chamber flows back to the return water tank.

[0008] When the switching circuit activates the humidity regulation passage where the evaporation chamber is located, the air pump is used to transmit the gas transmitted through the air inlet pipe to the evaporation chamber, so that the gas in the evaporation chamber comes into contact with the vapor in the evaporation chamber to generate water vapor, which is then output to the compressor.

[0009] The aforementioned humidity regulating device includes an air inlet pipe, an air compressor, an air pump, a switching circuit, an evaporation chamber, a pressure water tank, and a return water tank. The switching circuit can selectively connect the water path containing the pressure water tank and the humidity regulating path containing the evaporation chamber. When the switching circuit connects the water path, the water in the pressure water tank can be pumped into the evaporation chamber by adjusting the air pump flow rate, thus controlling the water volume in the evaporation chamber. When the switching circuit closes the water path and connects the humidity regulating path, the air pump controls the gas flow rate, allowing gas to be transported from the air inlet pipe to the evaporation chamber. The gas carries away moisture from the evaporation chamber, achieving both gas volume control and humidification. In this embodiment, the combination of the air pump and the switching circuit ultimately achieves humidity regulation.

[0010] In one embodiment, the humidity regulating device further includes: a connecting switch, disposed on the return water passage between the pressure tank and the return water tank, for connecting the return water passage and introducing the liquid from the return water tank into the pressure tank.

[0011] In one embodiment, the humidity regulating device further includes a heating pipeline, wherein the heating pipeline is connected to the pressure tank and the return tank respectively, the heating pipeline is used to transport the liquid, and a heater is provided on the heating pipeline for heating the liquid.

[0012] In one embodiment, the outlet of the evaporation chamber is located at the top of the evaporation chamber and is adjacent to the inlet of the compressor.

[0013] In one embodiment, the evaporation chamber is provided with a gas passage pipe, wherein the gas passage pipe is in contact with the liquid in the evaporation chamber, the first end of the gas passage pipe is connected to the gas inlet, and the second end of the gas passage pipe is higher than the liquid level in the evaporation chamber.

[0014] In one embodiment, the pressure tank is provided with a water inlet pipe connected to the water inlet of the evaporation chamber, wherein the water inlet port of the water inlet pipe is located at the bottom of the pressure tank.

[0015] In one embodiment, the return water tank is located above the pressure water tank and is directly connected to the atmosphere, and the bottom of the return water tank is connected to the pressure water tank.

[0016] In one embodiment, the humidity regulating device further includes a controller and a humidity sensor located at the output port of the compressor. The controller is also connected to the air pump and the switching circuit. The controller is used to control the conduction state of the switching circuit and to control the operating state and flow rate of the air pump according to the detection result of the humidity sensor, so as to regulate the humidity.

[0017] Secondly, embodiments of this application provide a vehicle including a turbocharger and the aforementioned humidity control device, wherein the evaporation chamber of the humidity control device is integrated into the housing of the turbocharger.

[0018] Thirdly, embodiments of this application provide a humidity control method applied to the aforementioned vehicle, the humidity control method comprising:

[0019] Obtain the operating condition information of the vehicle;

[0020] The humidity control strategy is determined based on the operating condition information, and the control strategy includes at least one of closed-loop control strategy and open-loop control strategy.

[0021] The flow rate of the air pump is controlled according to the control strategy to adjust the output humidity of the humidity regulating device.

[0022] The aforementioned humidity control method requires acquiring vehicle operating condition information and determining a humidity control strategy based on this information. If the engine operating condition is stable, closed-loop control is used; if the engine operating condition is unstable, open-loop control is used. The flow rate of the air pump is controlled according to different control strategies to adjust the output humidity of the humidity regulating device. The humidity control method in this embodiment can select different control strategies based on different engine operating conditions, and then control the flow rate of the air pump according to the appropriate control strategy to adjust the output humidity of the humidity regulating device. This improves the adaptability of the humidity control method and expands its application scenarios, making it more suitable for complex vehicle operating conditions.

[0023] In one embodiment, the control strategy is an open-loop control strategy, and controlling the gas flow rate of the air pump according to the control strategy to adjust the humidity of the compressor includes:

[0024] Obtain the ambient humidity detected by the humidity sensor located at the output port of the compressor;

[0025] When the ambient humidity is lower than the target humidity, the air pump is controlled to operate and its flow rate is increased. The switching circuit is also controlled to open the humidity regulation path and close the water path.

[0026] In one embodiment, the method further includes:

[0027] Obtain the ambient temperature of the humidity control device;

[0028] The target humidity is determined based on the ambient temperature, the vehicle's operating condition information, and a preset humidity meter, wherein the preset humidity meter is used to characterize the correspondence between the ambient temperature, the vehicle's operating condition information, and the target humidity.

[0029] In one embodiment, the operating condition information includes engine speed and fuel level information, and the method further includes:

[0030] The base value of the vehicle combustion timing is determined based on the engine speed, the fuel quantity information, and a preset table; wherein, the preset table is used to characterize the correspondence between the engine speed, the fuel quantity information, and the base value;

[0031] The correction factor is determined based on the engine speed, the ambient humidity, and the correction factor table.

[0032] The correction value is determined based on the correction coefficient and the base value;

[0033] The target timing is determined based on the correction value and the base value;

[0034] Adjust the combustion timing of the vehicle to the target timing.

[0035] In one embodiment, the method further includes:

[0036] When the ambient humidity is greater than or equal to the target humidity, the air pump is controlled to stop working, and the switching circuit is controlled to disconnect the humidity regulation passage and open the water passage so that the liquid in the evaporation chamber flows back to the pressure tank.

[0037] In one embodiment, the control strategy is a closed-loop control strategy, and controlling the gas flow rate of the air pump according to the control strategy to adjust the humidity of the compressor includes:

[0038] The vehicle's fuel resources, urea resources, fuel consumption rate, and nitrogen oxide production rate are obtained.

[0039] Obtain a preset weight table and a predictive control model; wherein, the preset weight table is used to represent the correspondence between the operating condition information, ambient temperature and weight coefficients, the weight coefficients are the weight coefficients in the control model, and the predictive control model is used to predict the target nitrogen oxide emissions of the vehicle;

[0040] The fuel resources and urea resources are input into the predictive control model, and the fuel consumption rate, nitrogen oxide generation rate, and weight coefficients in the predictive control model are adjusted according to the operating condition information and the ambient temperature to obtain the target nitrogen oxide emissions.

[0041] The gas flow rate of the air pump is controlled according to the target nitrogen oxide emission level to regulate the humidity of the air compressor.

[0042] In one embodiment, the method further includes:

[0043] The combustion timing is adjusted according to the target nitrogen oxide emission level to regulate the fuel consumption rate and the nitrogen oxide generation rate, so that the vehicle's nitrogen oxide emissions reach the target nitrogen oxide emission level.

[0044] In one embodiment, the step of inputting the fuel resources and the urea resources into the predictive control model, and adjusting the fuel consumption rate, the nitrogen oxide production rate, and the weighting coefficients in the predictive control model according to the operating condition information and the ambient temperature to obtain the target nitrogen oxide emissions includes:

[0045] In the initial state, the fuel resources and the urea resources are input into the predictive control model, and the fuel consumption rate and the nitrogen oxide production rate are adjusted to obtain the first output result of the predictive control model;

[0046] Based on the first output result, the operating condition information, and the ambient temperature feedback, the fuel consumption rate, the nitrogen oxide production rate, and the weighting coefficients in the predictive control model are adjusted to obtain the second output result of the predictive control model.

[0047] When the first output result and the second output result do not meet the preset conditions, the fuel consumption rate and the nitrogen oxide production rate are adjusted according to the current output result of the current predictive control model until the output result of the predictive control model meets the preset conditions.

[0048] The target nitrogen oxide emission is determined based on the fuel consumption rate and nitrogen oxide generation rate that meet the preset conditions.

[0049] Fourthly, embodiments of this application provide a computer device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the humidity control method of any embodiment provided in the third aspect above.

[0050] It is understood that the beneficial effects achieved by the vehicle described in the second aspect, the humidity control method described in the third aspect, and the computer equipment described in the fourth aspect can be referred to the beneficial effects of the humidity regulating device described in the first aspect and any of its embodiments, and will not be repeated here. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is one of the structural schematic diagrams of a humidity regulating device in one embodiment;

[0053] Figure 2 This is a second schematic diagram of the humidity regulating device in one embodiment;

[0054] Figure 3 This is the third schematic diagram of the humidity regulating device in one embodiment;

[0055] Figure 4 This is the fourth schematic diagram of the humidity regulating device in one embodiment;

[0056] Figure 5 This is the fifth schematic diagram of the humidity regulating device in one embodiment;

[0057] Figure 6 This is a schematic diagram of the humidity control device in one embodiment;

[0058] Figure 7 This is a flowchart illustrating a humidity control method in one embodiment;

[0059] Figure 8 This is a schematic flowchart of a method for controlling the gas flow rate of an air pump to adjust the humidity of a compressor according to an open-loop control strategy in one embodiment.

[0060] Figure 9 This is a flowchart illustrating the humidity control method in another embodiment;

[0061] Figure 10 This is a schematic flowchart of a method for controlling the gas flow rate of an air pump to regulate the humidity of an air compressor according to a closed-loop control strategy, as one embodiment.

[0062] Figure 11 This is a flowchart illustrating step S1006 in one embodiment;

[0063] Figure 12 This is a schematic diagram of the frame of a humidity control device in one embodiment;

[0064] Explanation of reference numerals in the attached figures:

[0065] 80-Humidity sensor, 90-Controller, 100-Inlet pipe, 200-Compressor, 210-Compressor inlet, 300-Air pump, 400-Switch circuit, 500-Evaporation chamber, 520-Evaporation chamber water inlet, 530-Evaporation chamber air outlet, 540-Evaporation chamber reflux hole, 560-Liquid level, 600-Pressure water tank, 700-Return water tank, 800-Connecting switch, 900-Heating pipe, 910-Heater, 1200-Humidity regulating device, 1202-Operating condition acquisition module, 1204-Control strategy module, 1206-Humidity regulating module. Detailed Implementation

[0066] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0068] It is understood that the terms "first" and "second" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "first," "second," etc., may be used herein to describe various elements, but these elements are not limited by these terms. These terms are used only to distinguish one element from another. Furthermore, in the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise explicitly specified.

[0069] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as “below,” “under,” or “below” will be oriented “above” the other element or feature. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0070] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. Furthermore, in the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if there is transmission of electrical signals or data between the connected objects.

[0071] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0072] In one embodiment, such as Figure 1 As shown, a humidity regulating device is provided, including: an air inlet pipe 100, a compressor 200, an air pump 300, a switching circuit 400, an evaporation chamber 500, a pressure water tank 600, and a return water tank 700. The first end of the air inlet pipe 100 is connected to the first end of the switching circuit 400 via the air pump 300. The two second ends of the switching circuit 400 are respectively connected to the first end of the pressure water tank 600 and the air inlet 510 of the evaporation chamber 500. The second end of the pressure water tank 600 is connected to the return water tank 700, and the pressure water tank 600 is also connected to the water inlet 520 of the evaporation chamber 500. The air outlet of the evaporation chamber 500 is connected to the inlet of the compressor 200 via the second end of the air inlet pipe 100. The reflux hole 540 of the evaporation chamber 500 is connected to the return water tank 700.

[0073] The intake pipe 100 serves as the conduit for gas to enter the humidity regulating device. The intake pipe 100 transmits gas to the compressor 200 and the air pump 300. The compressor 200 is a component in a gas turbine engine that uses high-speed rotating blades to perform work on the air to increase its pressure. The compressor 200 compresses the gas transmitted through the intake pipe 100, converting the resulting high-temperature, high-pressure gas into mechanical energy for output.

[0074] The air pump 300 is a device that can expel or add gas from a closed space. It can be controlled by an ECU (electronic control unit), which can adjust the gas volume and pressure. For example, the air pump 300 can control the gas flow rate output from the inlet pipe 100 to the evaporation chamber 500.

[0075] The switching circuit 400 can be used to select between the water path (referred to as the water path) and the humidity regulating path (referred to as the air path). For example, the switching circuit 400 can be a two-outlet electromagnetic on / off valve, one outlet connected above the pressure tank 600 to regulate the liquid level in the evaporation chamber 500 by controlling the pressure; the other outlet of the switching circuit 400 is used to control the on / off of the humidification line and is connected to the gas inlet 510 of the evaporation chamber 500.

[0076] The water passage is equipped with an air pump 300, a switch circuit 400, a pressure water tank 600, an evaporation chamber 500, and a return water tank 700. The humidity regulation passage is equipped with an air pump 300, a switch circuit 400, an evaporation chamber 500, and an air compressor 200.

[0077] The evaporation chamber 500 allows for air intake and water vapor contact, enabling the intake air to carry water vapor and achieve humidification. The pressure tank 600 uses the air pump 300 to pressurize water into the evaporation chamber 500; essentially, the pressure tank 600 and the evaporation chamber 500 form a communicating vessel. The return tank 700 is connected to the evaporation chamber return port 540, allowing water to flow into the return tank 700 when the liquid level in the evaporation chamber 500 exceeds the maximum level.

[0078] When the switch circuit 400 opens the water passage of the pressure tank 600, the air pump 300 increases the internal pressure of the pressure tank 600, forcing the liquid in the pressure tank 600 into the evaporation chamber 500. When the liquid level in the evaporation chamber 500 exceeds the maximum water level, the liquid in the evaporation chamber 500 flows back to the return water tank 700. Optionally, the switch circuit 400 can be kept closed after being connected for a period of time to maintain the liquid level in the evaporation chamber 500. In this case, the air pump 300 only controls the air passage. When the switch circuit 400 is turned on and the air pump 300 is turned off, the inside of the pressure tank 600 is connected to the atmosphere, and the pressure drop causes the water in the evaporation chamber 500 to flow back to the pressure tank 600.

[0079] When the switching circuit 400 is activated in the humidity regulating passage of the evaporation chamber 500, the air pump 300 is used to transfer the gas transmitted by the air inlet pipe 100 to the evaporation chamber 500, so that the gas in the evaporation chamber 500 comes into contact with the vapor in the evaporation chamber 500 to generate water vapor, which is then output to the compressor 200. When the switching circuit 400 is used in the humidity regulating passage, the air pump 300 can provide power to drive fresh air from the air inlet through the air pump 300 and the switching circuit 400 into the evaporation chamber 500. The air pump 300 controls the amount of air, and the switching circuit 400 controls the opening and closing of the air passage, thereby realizing the control of the humidity regulating passage.

[0080] The humidity regulating device provided in this embodiment includes an air inlet pipe, a compressor, an air pump, a switching circuit, an evaporation chamber, a pressure water tank, and a return water tank. An air intake port is provided at the air inlet pipe of the compressor for air intake. The air intake port is connected to the air pump via a flexible hose. The air pump can be controlled by an ECU (Electronic Control Unit), which can adjust the air volume and pressure. The switching circuit can selectively open the water path containing the pressure water tank and the humidity regulating path containing the evaporation chamber. When the switching circuit opens the water path, the water in the pressure water tank can be pumped into the evaporation chamber by adjusting the air pump flow rate, thus controlling the water volume in the evaporation chamber. When the switching circuit closes the water path and opens the humidity regulating path, the air pump controls the gas flow rate, allowing gas to be transported from the air inlet pipe to the evaporation chamber. The gas carries away moisture from the evaporation chamber, achieving both air volume control and humidification of the gas. The humidity regulating device in this embodiment has a simple structure, occupies little space, and is low in cost. By combining an air pump and a switching circuit, it ultimately achieves humidity regulation.

[0081] In one embodiment, such as Figure 2 As shown, the humidity regulating device also includes a connecting switch 800 disposed on the return water passage between the pressure tank 600 and the return water tank 700. The connecting switch 800 is used to open the return water passage, guiding the liquid in the return water tank 700 to the pressure tank 600. For example, the connecting switch 800 can be a manual valve. The connecting switch 800 controls the opening and closing of the pressure tank 600 and the return water tank 700. When the water level in the return water tank 700 is high, the connecting switch 800 is opened to allow water to flow from the return water tank 700 to the pressure tank 600. If the water level in the return water tank 700 is low, the connecting switch 800 does not need to be opened.

[0082] In the humidity regulating device provided in this embodiment, a connecting switch is installed between the pressure tank and the return tank. This connecting switch can control the connection between the return tank and the pressure tank. When the system stops and the water level in the return tank is high, the valve can be manually opened to release the water from the return tank back into the pressure tank. This prevents the return tank from becoming too full when the water level in the evaporation chamber reaches its maximum, thus ensuring timely adjustment of the intake humidity.

[0083] Alternatively, the return water tank can be a smaller water tank located above the pressure water tank, directly connected to the atmosphere, and its bottom connected to the pressure water tank.

[0084] In one embodiment, such as Figure 3 As shown, the humidity control device further includes a heating pipe 900, which is connected to a pressure tank 600 and a return tank 700 respectively. The heating pipe 900 is used to transport liquid. A heater 910 is installed on the heating pipe, which can generate heat to heat the liquid. For example, the heater 910 can be located between the pressure tank 600 and the return tank 700 on the heating pipe, near the evaporation chamber 500.

[0085] In low-temperature environments, the water tank freezes, rendering the air intake humidification device unusable. A heating pipe is added to the water tank, which uses a heater to heat the water. The heating pipe passes through the pressure tank and return tank in sequence, with cooling water flowing inside. The cooling water temperature can heat the water tank to complete the thawing. The cooling water heating the water in the tank also helps to evaporate and increase humidity.

[0086] In one embodiment, such as Figure 4 As shown, the air outlet 530 of the evaporation chamber 500 is located at the top of the evaporation chamber 500 and is adjacent to the inlet of the compressor 200.

[0087] The configuration provided in this embodiment, by placing the air outlet of the evaporation chamber adjacent to the air inlet of the compressor, allows the humidified gas in the evaporation chamber to directly enter the compressor, reducing the loss of humidity.

[0088] In one embodiment, such as Figure 5 As shown, an air passage pipe 550 is provided inside the evaporation chamber 500. The air passage pipe 550 is in contact with the liquid inside the evaporation chamber 500. The first end of the air passage pipe is connected to the air inlet 510, and the second end of the air passage pipe 550 is higher than the liquid level inside the evaporation chamber 500. The liquid level refers to the position flush with the evaporation chamber return hole 540, which is located at 2 / 3 of the height of the evaporation chamber.

[0089] The gas pipeline provided in this embodiment is installed inside the evaporation chamber for intake air to pass through the water in the evaporation chamber. The second end of the gas pipeline needs to be higher than the water level in the evaporation chamber. The intake air and water vapor meet at the second end of the gas pipeline, and the intake air humidifies itself by carrying water vapor. By setting up the gas pipeline, direct contact between the intake air and the water in the evaporation chamber is avoided, which would lead to excessive humidity in the intake air.

[0090] In one embodiment, such as Figure 5As shown, the pressure tank 600 is equipped with a water inlet pipe connected to the water inlet of the evaporation chamber 500, wherein the water inlet port 520 of the water inlet pipe is located at the bottom of the pressure tank 500. Exemplarily, the water inlet pipe can be connected from the bottom of the pressure tank 600 to the bottom of the evaporation chamber 500. It can be understood that the pressure tank 600, the water inlet pipe, and the evaporation chamber 500 constitute a communicating vessel.

[0091] The water inlet pipe from the bottom of the pressure tank to the bottom of the evaporation chamber provided in this embodiment uses an air pump to press the water from the pressure tank into the evaporation chamber through the water inlet pipe, thereby controlling the liquid level in the evaporation chamber.

[0092] In one embodiment, such as Figure 6 As shown, the humidity regulating device also includes a controller 90 and a humidity sensor 80 located at the output port 220 of the compressor 200. The controller 90 is also connected to the air pump 300 and the switching circuit 400. The controller 90 controls the conduction state of the switching circuit 400 and, based on the detection results of the humidity sensor 80, controls the operating state and flow rate of the air pump 300 to regulate humidity. The controller 90 can be an ECU, or electronic control unit, which can control the vehicle's driving status and perform its various functions.

[0093] In the humidity regulating device provided in this embodiment, the controller controls the air pump and the switching circuit, thereby controlling the opening and closing of the air and water circuits. The humidity of the incoming air is monitored by the measurement value of the humidity sensor. The controller can quickly determine whether the current humidity has reached the target humidity, which is conducive to timely adjustment of the ambient humidity through the controller.

[0094] In one embodiment, a vehicle is provided, including a turbocharger and a humidity regulating device as described in the above embodiment, wherein the evaporator chamber of the humidity regulating device is integrated into the housing of the turbocharger. The turbocharger is, in effect, an air compressor.

[0095] The vehicle in this embodiment includes a turbocharger and the humidity regulating device described in the previous embodiment. The switching circuit in the humidity regulating device can selectively open the water path containing the pressure tank and the humidity regulating path containing the evaporator chamber. When the switching circuit opens the water path, the water in the pressure tank can be pumped to the evaporator chamber by adjusting the flow rate of the air pump, thus controlling the water volume in the evaporator chamber. When the switching circuit closes the water path and opens the humidity regulating path, the air pump controls the gas flow rate, allowing gas to be transferred from the intake pipe to the evaporator chamber. The gas carries away moisture from the evaporator chamber, achieving both gas volume control and humidification. In this embodiment, the vehicle integrates the evaporator chamber onto the compressor housing. The high temperature of the compressor housing during operation results in good liquid evaporation in the evaporator chamber, thereby increasing humidity. Furthermore, the humidity regulating device has a simple structure, occupies little space, and is low in cost, further expanding the available space in the vehicle and providing space for other components.

[0096] In one embodiment, such as Figure 7 As shown, a humidity control method is provided, which includes steps S702 to S706.

[0097] Step S702: Obtain the vehicle's operating condition information.

[0098] Among them, operating condition information refers to information about the engine's working status under different conditions, such as, but not limited to, the engine crankshaft speed, torque, and effective power.

[0099] Step S704: Determine the humidity control strategy based on the operating condition information. The control strategy includes at least one of closed-loop control strategy and open-loop control strategy.

[0100] When the engine is operating stably, a closed-loop control strategy is used. When the engine is operating unstablely, an open-loop control strategy is used. Stable engine operating conditions can be understood as the engine having warmed up and entered normal operation; that is, the engine crankshaft speed, torque, and effective power do not change suddenly within a certain period. Unstable engine operating conditions can be understood as significant changes in the engine crankshaft speed, torque, and effective power within a certain period. For example, the engine operating states such as starting, warming up, and idling can be considered unstable. The upstream nitrogen oxide sensor will be unavailable at low temperatures; that is, the upstream nitrogen oxide sensor will be unavailable when the engine is started for the first time.

[0101] Step S706: Control the flow rate of the air pump according to the control strategy to adjust the output humidity of the humidity regulating device.

[0102] Open-loop control can be understood as adjusting the target humidity by regulating the air pump flow rate. For example, the air pump flow rate can be controlled based on the ambient humidity and target humidity obtained from a humidity sensor, thereby regulating the intake air humidity. Closed-loop control can be understood as using vehicle combustion parameters to control the air pump, adjusting it to a suitable intake air humidity to minimize fuel consumption. Combustion parameters may include, but are not limited to, fuel resources, urea resources, fuel consumption rate, and nitrogen oxide production rate. The resources in fuel and urea can be understood as corresponding costs.

[0103] In this embodiment, the humidity control method can determine different humidity control strategies based on the acquired vehicle operating condition information. Then, it can control the air pump flow rate according to the corresponding control strategy to adjust the output humidity of the humidity regulating device. This allows for the selection of an appropriate control strategy to adjust the humidity based on different vehicle operating condition information, which can improve the adaptability of the humidity control method and expand its application scenarios, making it more suitable for complex vehicle operating conditions.

[0104] In one embodiment, such as Figure 8 As shown, the control strategy is an open-loop control strategy. Based on this strategy, the gas flow rate of the air pump is controlled to regulate the humidity of the compressor, including:

[0105] Step S802: Obtain the ambient humidity detected by the humidity sensor located at the compressor output port.

[0106] The ambient humidity detected by the humidity sensor can be the humidity at the compressor output.

[0107] In step S804, when the ambient humidity is lower than the target humidity, the air pump is controlled to work and the air pump flow rate is increased, and the control switch circuit is used to open the humidity regulation path and close the water path.

[0108] Among these, the target humidity and ambient temperature are related to the vehicle's operating conditions. For example, there is a certain correspondence between the target humidity, ambient temperature, and vehicle operating conditions.

[0109] In this embodiment, when using a closed-loop control strategy to control the gas flow rate of the air pump to regulate the humidity of the compressor, the air pump can be controlled to operate even when the ambient humidity is lower than the target humidity. The intake air humidity is adjusted by regulating the air pump flow rate, increasing the flow rate. Simultaneously, the switching circuit disconnects the water path and opens the humidity regulation path, increasing the intake air volume and maintaining the liquid level in the evaporation chamber. Through this control method, the ambient humidity is increased and brought to the target humidity level.

[0110] In one embodiment, prior to step S804, controlling the gas flow rate of the air pump according to a control strategy to adjust the humidity of the compressor further includes: acquiring the ambient temperature of the humidity regulating device, and determining the target humidity based on the ambient temperature, vehicle operating information, and a preset humidity meter. The preset humidity meter is used to characterize the correspondence between the ambient temperature, vehicle operating information, and the target humidity.

[0111] Optionally, the target humidity is tested through engine bench testing. Appropriate humidity values ​​can be set for different operating conditions (e.g., speed and torque conditions). Considering the different requirements for nitrogen oxides at different aftertreatment temperatures, three calibrable aftertreatment temperature gradients are set. Test personnel calibrate three important temperature stages based on aftertreatment performance, representing changes in aftertreatment conditions, such as 200℃, 250℃, and 300℃, corresponding to preset humidity tables (e.g., target humidity MAPs) humid_MAP1, humid_MAP2, and humid_MAP3, respectively. The preset humidity tables respectively represent the correspondence between operating conditions (e.g., speed and torque conditions) and target humidity at a given ambient temperature. For example, when the ambient temperature is below 200℃, the humidity corresponding to the current operating condition can be determined by consulting the humid_MAP1 table. When the ambient temperature is above 300℃, the humidity corresponding to the current operating condition can be determined by consulting the humid_MAP3 table. When the ambient temperature is between 200℃ and 300℃, the target humidity can be determined by consulting the tables humid_MAP1 and humid_MAP2 and interpolating based on the current temperature.

[0112] In this embodiment, the target humidity can be determined based on the ambient temperature and vehicle operating conditions. By comparing the detected ambient humidity with the target humidity, the intake humidity can be controlled in a timely manner, thus achieving humidity adjustment under different operating conditions and temperatures.

[0113] In one embodiment, the method further includes controlling the air pump to stop working and controlling the switching circuit to disconnect the humidity regulation passage and open the water passage when the ambient humidity is greater than or equal to the target humidity, so that the liquid in the evaporation chamber flows back to the pressure tank.

[0114] In this embodiment, the intake air humidity is adjusted by regulating the air pump flow rate. When the air pump is turned off, the control switch circuit disconnects the humidity regulation path, preventing further airflow. Simultaneously, the water path of the switch circuit is opened, creating a communication channel between the evaporation chamber and the pressure tank. At this point, the liquid in the evaporation chamber flows back to the pressure tank, meaning there can be no liquid in the evaporation chamber. Through this control method, the humidification of the intake air is stopped.

[0115] In one embodiment, such as Figure 9 As shown, humidity control methods include:

[0116] Step S902: Obtain the vehicle's operating condition information.

[0117] Step S904: Determine the humidity control strategy based on the operating condition information. The control strategy includes at least one of closed-loop control strategy and open-loop control strategy.

[0118] Step S906: Control the flow rate of the air pump according to the control strategy to adjust the output humidity of the humidity regulating device.

[0119] Step S908: Determine the base value of vehicle combustion timing based on engine speed, fuel quantity information and preset table.

[0120] The preset table is used to characterize the correspondence between engine speed, fuel level, and baseline values. The preset table, SOCMAP, can be a 3D map, calibrated using an experimental bench. In this embodiment, the corresponding baseline values ​​can be obtained based on the preset table and the acquired engine speed and fuel level information. This preset table can be pre-stored in the vehicle's controller.

[0121] Step S910: Determine the correction factor based on engine speed, ambient humidity, and the correction factor table.

[0122] Ambient humidity can be obtained from a humidity sensor. The correction factor table facMAP can be understood as a three-dimensional map of correction factors, which characterizes the relationship between engine speed, ambient humidity, and the correction factors. This correction factor table can be pre-stored in the vehicle's controller. In this embodiment, the corresponding correction factors can be obtained based on the correction factor table facMAP and the obtained engine speed and ambient humidity. The correction factor can be understood as the degree of correction made to combustion timing based on the current engine speed and current ambient humidity.

[0123] The correction factor table facMAP can be pre-stored in the vehicle's controller.

[0124] Step S912: Determine the target timing based on the correction factor and the baseline value.

[0125] The correction value is obtained by multiplying the base value and the correction coefficient. The target timing is then determined based on the obtained correction value and the base value. Specifically, the target timing is the sum of the correction value and the base value.

[0126] Step S914: Adjust the vehicle's combustion timing to the target timing.

[0127] Engine combustion timing can be understood as the moment when the engine's compression stroke ends, the piston reaches the top of its stroke, and the ignition system provides a high-pressure spark to the spark plug to ignite the compressed air-fuel mixture in the cylinder to do work. Combustion timing needs to be adjusted according to the vehicle's operating conditions.

[0128] The controller regulates the water and air circuits by controlling the air pump and switching circuit. For example, when the switching circuit opens the water circuit, the air pump flow rate is adjusted to pressurize the water in the pressure tank to the evaporation chamber, thus controlling the water volume in the evaporation chamber. When the switching circuit closes the water circuit and opens the humidity regulation circuit, the air pump controls the gas flow rate, allowing gas to be transported from the intake pipe to the evaporation chamber. The gas carries away moisture from the evaporation chamber, thus controlling the gas volume while simultaneously humidifying this portion of the gas. Furthermore, according to steps S912 to S914, the vehicle corrects the combustion timing for the current humidity level.

[0129] In this embodiment, open-loop control is achieved by modifying the timing settings in the ECU. Considering the differences in optimal timing under different humidity levels, the combustion timing can be adjusted for different humidity conditions. The intake air humidity of the vehicle affects fuel consumption and nitrogen oxide emissions under different after-treatment conditions. By correcting the combustion timing based on intake air humidity in this embodiment, the overall optimization of fuel consumption and nitrogen oxide emissions is achieved.

[0130] In one embodiment, such as Figure 10 As shown, the control strategy is a closed-loop control strategy. Based on this strategy, the gas flow rate of the air pump is controlled to regulate the humidity of the compressor, including:

[0131] Step S1002: Obtain the vehicle's fuel resources, urea resources, fuel consumption rate, and nitrogen oxide production rate.

[0132] Among these, vehicle fuel resources refer to the cost of fuel consumed by the vehicle. NOx emission treatment requires the injection of urea into the aftertreatment system, and urea resources refer to the cost of urea consumed in the aftertreatment system. The vehicle's fuel resources, urea resources, fuel consumption rate, and nitrogen oxide generation rate can all be obtained through the ECU. The overall cost of the vehicle needs to be calculated by combining the engine fuel injection quantity and urea injection quantity: C_total = C_fuel + C_Urea = P_fuel * M_fuel + P_urea * M_NOx * C, where C_total is the overall cost, C_fuel is the fuel cost, C_Urea is the urea cost; P_fuel is the average fuel price; M_fuel is the current fuel consumption rate, calculated in real-time based on the injection quantity and engine speed, in L / h; P_urea is the average urea price; M_NOx is the current NOx generation rate, calculated based on the original NOx emission results and exhaust flow rate, in kg / h; and C is the urea-NOx conversion coefficient.

[0133] Step S1004: Obtain the preset weight table and predictive control model.

[0134] The preset weight table represents the correspondence between operating condition information, ambient temperature, and weight coefficients. These weight coefficients are the same as those in the predictive control model, which is used to predict the target nitrogen oxide emissions of the vehicle. The weight coefficients in the predictive control model can be used to represent the importance of various factors in the model.

[0135] Step S1006: Input fuel resources and urea resources into the predictive control model, and adjust the fuel consumption rate, nitrogen oxide generation rate and weight coefficients in the predictive control model according to the operating condition information and ambient temperature to obtain the target nitrogen oxide emissions.

[0136] The predictive control module can be understood as a function that comprehensively evaluates the output deviation and the rate of change of the control quantity, denoted as J:

[0137]

[0138] In the formula, C total(i) For comprehensive cost estimation, it can be obtained based on fuel consumption and nitrogen oxide emissions. Here, C_total = P_fuel * M_fuel + P_urea * M_NOx * C. Where P_fuel is the average fuel price, M_fuel is the current fuel consumption rate (calculated in real-time based on injection quantity and engine speed, in L / h), P_urea is the average urea price, M_NOx is the current NOx generation rate (calculated based on previous NOx emissions and exhaust flow rate, in kg / h), and C is the urea-NOx conversion coefficient. EM2 NOx(i) The downstream nitrogen oxide emissions are calculated using the formula EM2_NOx=M_NOx*η_SCR / (M_exhmass*ρ_NOx)*1E6. Where EM2_NOx is the downstream NOx concentration in ppm, M_NOx is the NOx generation rate in kg / h, η_SCR is the current reaction efficiency of the SCR model, M_exhmass is the current exhaust gas volume in kg / h, and ρ_NOx is the recommended NOx density of 2.053 kg / m3. Where dM fuel() To control the rate of change of the variable M_fuel, dM NOx(i) Let M_NOx be the rate of change of the control variable. a, b, c, and d can be understood as weighting coefficients in the predictive control model. Specifically, a is the weighting coefficient for overall cost, b is the weighting coefficient for downstream nitrogen oxide emissions, c is the weighting coefficient for the rate of change of the current fuel consumption rate, and d is the weighting coefficient for the rate of change of the current NOx generation rate.

[0139] The initial total cost Ctotal(i) and downstream nitrogen oxide emissions EM2 NOx(i) Setting it to 0, humidity and combustion timing are adjusted to control fuel consumption and nitrogen oxide emissions, thus controlling the rate of change of the current fuel consumption rate (dM). fuel(i) and the rate of change of the current NOx production rate dM Nox(i) J is determined by two variables. The output deviation at the next k time points is calculated, and k can be adjusted according to demand. The downstream nitrogen oxide emission EM2 corresponds to the minimum J. Nox(i) This refers to the target nitrogen oxide emissions. For example, it can be set up with 5 calculation cycles, and the index function is the sum of the weighted squares of the two outputs in the subsequent 5 cycles and the sum of the weighted squares of the adjusted inputs in the 4 cycles.

[0140] Step S1008: Control the gas flow rate of the air pump according to the target nitrogen oxide emission amount to adjust the humidity of the compressor.

[0141] The target nitrogen oxide (NOx) production rate (M_NOx) can be obtained from the target NOx emission amount calculated in S1006. Specifically, the target NOx production rate M_NOx can be calculated using the formula EM2_NOx=M_NOx*η_SCR / (M_exhmass*ρ_NOx)*1E6. In this formula, EM2_NOx is the target NOx emission amount, η_SCR is the current reaction efficiency of the SCR model, M_exhmass is the current exhaust volume (kg / h), and ρ_NOx is the recommended NOx density (2.053 kg / m3). Furthermore, the current NOx production rate can be obtained from the upstream NOx sensor, and the compressor humidity can be adjusted by controlling the gas flow rate of the gas pump to regulate the current NOx production rate, thereby achieving the target NOx production rate.

[0142] In this embodiment, by inputting fuel resources and urea resources into the predictive control model, and adjusting the fuel consumption rate, nitrogen oxide generation rate, and weighting coefficients in the predictive control model based on operating condition information and ambient temperature, the target nitrogen oxide emission can be obtained. The gas flow rate of the air pump is then controlled according to the target nitrogen oxide emission to adjust the compressor humidity. This closed-loop control strategy achieves optimal overall cost under different aftertreatment conditions. By adjusting the timing of fuel consumption rate, nitrogen oxide generation rate, and weighting coefficients in the predictive control model, the fuel consumption and nitrogen oxide emission targets are adjusted, thereby controlling the gas flow rate of the air pump to adjust the compressor humidity.

[0143] In one embodiment, after step S1008, the fuel consumption rate and nitrogen oxide generation rate are adjusted according to the target nitrogen oxide emission level to ensure that the vehicle's nitrogen oxide emissions reach the target level. The target nitrogen oxide emission level is obtained using the predictive control model described in the above embodiment.

[0144] The predictive control model obtains the relationship between the target nitrogen oxide emissions, fuel consumption rate, and nitrogen oxide generation rate. When the predictive control model obtains the target nitrogen oxide emissions, the actual nitrogen oxide emissions are obtained by controlling the fuel consumption rate and nitrogen oxide generation rate, which are then used as the target nitrogen oxide emissions.

[0145] Optionally, considering the impact of timing on knock pressure and soot emissions, the closed-loop result needs to be limited by upper and lower limit MAPs. The upper and lower limit MAPs can be understood as the correspondence between the current nitrogen oxide production rate, current ambient humidity, and current operating condition information. The upper limit can be understood as the maximum value of nitrogen oxide emissions, the maximum limit for normal engine operation, i.e., the maximum limit of engine crankshaft speed, torque, and effective power at this time. The lower limit can be understood as the minimum value of nitrogen oxide emissions (≥0), the minimum limit for normal engine operation, i.e., the minimum limit of engine crankshaft speed, torque, and effective power at this time. It is understood that adjustments to humidity and combustion timing can only be made within the range of the maximum and minimum limits.

[0146] The humidity control method in this embodiment can select different control strategies according to different engine operating conditions. Then, based on the adapted control strategy, the air pump flow rate is controlled to adjust the output humidity of the humidity regulating device. This improves the adaptability of the humidity control method and expands its application scenarios, making it more suitable for complex vehicle operating conditions. Through the predictive control model and the above steps, the target nitrogen oxide emission can be obtained. The combustion timing is adjusted according to the target nitrogen oxide emission, resulting in improved fuel consumption. This adjustment achieves the result of reducing the fuel injection quantity for the same torque output, thus achieving the optimal overall cost.

[0147] In one embodiment, such as Figure 11 As shown, fuel resources and urea resources are input into the predictive control model, and the fuel consumption rate, nitrogen oxide generation rate, and weighting coefficients in the predictive control model are adjusted according to operating condition information and ambient temperature to obtain the target nitrogen oxide emissions, including:

[0148] Step S1102: In the initial state, fuel resources and urea resources are input into the predictive control model, and the fuel consumption rate and nitrogen oxide generation rate are adjusted to obtain the first output result of the predictive control model.

[0149] The total cost C_total and the downstream nitrogen oxide emissions EM2_NOx are initially 0. By controlling the fuel consumption rate M_fuel and the NOx generation rate M_NOx, the change rate of the current fuel consumption rate dM_fuel and the change rate of the current NOx generation rate dM_NOx are adjusted. The first output result can be the fuel consumption and urea consumption.

[0150] Step S1104: Adjust the fuel consumption rate, nitrogen oxide generation rate, and weight coefficients in the predictive control model based on the first output result, operating condition information, ambient temperature feedback, and the first output result to obtain the second output result of the predictive control model.

[0151] The system employs predictive optimization control based on the first output result, operating condition information, ambient temperature feedback to adjust fuel consumption rate and nitrogen oxide generation rate, as well as weighting coefficients in the predictive control model. The weights can be adjusted according to different needs. It's understandable that increasing option a prioritizes fuel consumption and urea consumption costs, while increasing option b prioritizes downstream NOx emissions. Weights c and d represent the control over the rate of change in fuel consumption and the rate of change in NOx emissions.

[0152] Step S1106: When the first output result and the second output result do not meet the preset conditions, adjust the fuel consumption rate and nitrogen oxide generation rate according to the current output result of the current predictive control model until the output result of the predictive control model meets the preset conditions.

[0153] If the first and second output results do not meet the preset conditions, predictive optimization control can continue and the output result for the next time step can be calculated. The preset conditions can be understood as the control quantities corresponding to the minimum J: fuel consumption rate M_fuel and NOx generation rate M_NOx. At all times, based on the minimum J, the rate of change of the current fuel consumption rate dM_fuel and the rate of change of the current NOx generation rate dM_NOx can be calculated, thus obtaining the optimal fuel consumption and NOx emission results for subsequent time steps.

[0154] Step S1108: Determine the target nitrogen oxide emissions based on the fuel consumption rate and nitrogen oxide generation rate that meet preset conditions.

[0155] When the preset conditions of step S1106 are met, the downstream nitrogen oxide emission EM2_NOx at that moment is the target nitrogen oxide emission. The total cost C_total at that moment can be calculated from the target fuel consumption based on step S1104.

[0156] In this embodiment, by adjusting the target value using a predictive control model and calculating and decomposing the target fuel consumption and nitrogen oxide emissions based on the final comprehensive cost and after-treatment emissions, the control quantities can be made more precise. Through the humidity control method of the above embodiment, different control strategies can be selected according to different engine operating conditions. Then, the air pump flow rate is controlled according to the adapted control strategy to adjust the output humidity of the humidity regulating device, which can improve the adaptability of the humidity control method and expand its application scenarios, making it more suitable for complex vehicle operating conditions. The predictive control model can obtain the target nitrogen oxide emissions, and the intake air humidity is adjusted according to the target nitrogen oxide emissions. Furthermore, the vehicle's combustion timing is corrected, and the fuel consumption is improved after timing adjustment, achieving the result of reducing the fuel injection quantity at the same torque, thereby achieving the optimal comprehensive cost result.

[0157] It should be understood that, although Figures 7-11 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figures 7-11 At least some of the steps in the process may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least some of the steps or stages in other steps.

[0158] Based on the same inventive concept, this application also provides a humidity control device for implementing the humidity control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more humidity control device embodiments provided below can be found in the limitations of the humidity control method described above, and will not be repeated here.

[0159] In one embodiment, such as Figure 12 As shown, a humidity control device is provided, including: a working condition acquisition module 1202, a control strategy module 1204, and a humidity adjustment module 1206, wherein:

[0160] The operating condition acquisition module 1202 is used to acquire the operating condition information of the vehicle.

[0161] The control strategy module 1204 is used to determine a humidity control strategy based on the operating condition information, wherein the control strategy includes at least one of a closed-loop control strategy and an open-loop control strategy.

[0162] The humidity control module 1206 is used to control the flow rate of the air pump according to the control strategy to adjust the output humidity of the humidity control device.

[0163] In this embodiment, by acquiring vehicle operating condition information, different control strategies can be selected according to different engine operating conditions. Then, the flow rate of the air pump can be controlled according to the appropriate control strategy to adjust the output humidity of the humidity regulating device. This can improve the adaptability of the humidity control method and expand the application scenarios of the humidity control method, making it more suitable for complex vehicle operating conditions.

[0164] In one embodiment, the humidity regulation module 1206 is further configured to acquire the ambient humidity detected by the humidity sensor located at the compressor output port, and, when the ambient humidity is less than the target humidity, control the air pump to operate and increase the flow rate of the air pump, and control the switching circuit to open the humidity regulation path and close the water path.

[0165] In one embodiment, the humidity control module 1206 is further configured to acquire the ambient temperature of the humidity control device, and determine the target humidity based on the ambient temperature, the vehicle's operating condition information, and a preset humidity meter, wherein the preset humidity meter is used to characterize the correspondence between the ambient temperature, the vehicle's operating condition information, and the target humidity.

[0166] In one embodiment, the humidity control device further includes: a basic module, a correction coefficient module, a target timing module, and an adjustment timing module, wherein:

[0167] The basic module is used to determine the basic value of the vehicle combustion timing based on the engine speed, the fuel quantity information, and a preset table; wherein the preset table is used to characterize the correspondence between the engine speed, the fuel quantity information, and the basic value.

[0168] The correction factor module is used to determine the correction factor based on the engine speed, the ambient humidity, and the correction factor table.

[0169] The target correction module is used to determine the target timing based on the correction coefficient and the base value.

[0170] The timing adjustment module is used to adjust the combustion timing of the vehicle to the target timing.

[0171] In one embodiment, the humidity regulating module is further configured to control the air pump to stop working and control the switching circuit to disconnect the humidity regulating passage and open the water passage when the ambient humidity is greater than or equal to the target humidity, so that the liquid in the evaporation chamber flows back to the pressure tank.

[0172] In one embodiment, the control strategy is a closed-loop control strategy. The humidity adjustment module is further configured to acquire the vehicle's fuel resources, urea resources, fuel consumption rate, and nitrogen oxide production rate; acquire a preset weight table and a predictive control model; input the fuel resources and urea resources into the predictive control model; and adjust the fuel consumption rate, nitrogen oxide production rate, and weight coefficients in the predictive control model based on the operating condition information and ambient temperature to obtain the target nitrogen oxide emission. The gas flow rate of the air pump is then controlled based on the target nitrogen oxide emission to adjust the compressor's humidity. The preset weight table represents the correspondence between the operating condition information, ambient temperature, and weight coefficients. The weight coefficients are the weight coefficients in the control model, and the predictive control model is used to predict the vehicle's target nitrogen oxide emission.

[0173] In one embodiment, a humidity control device is provided, comprising: an adjustment module, wherein:

[0174] An adjustment module is used to adjust the combustion timing according to the target nitrogen oxide emission level, so as to regulate the fuel consumption rate and the nitrogen oxide generation rate, so as to minimize the fuel resources consumed by the vehicle.

[0175] In one embodiment, the humidity control module further includes a first output result acquisition module, used to input the fuel resources and urea resources into the predictive control model in an initial state, and adjust the fuel consumption rate and the nitrogen oxide production rate to acquire a first output result of the predictive control model. Based on the first output result, the operating condition information, and the ambient temperature feedback, the fuel consumption rate, the nitrogen oxide production rate, and the weighting coefficients in the predictive control model are adjusted to acquire a second output result of the predictive control model. When the first output result and the second output result do not meet preset conditions, the fuel consumption rate and the nitrogen oxide production rate are adjusted based on the current output result of the predictive control model until the output result of the predictive control model meets the preset conditions. The target nitrogen oxide emission is determined based on the fuel consumption rate and nitrogen oxide production rate that meet the preset conditions.

[0176] Each module in the aforementioned humidity control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0177] In one embodiment, a vehicle is provided, including a memory and a processor, the memory storing a computer program, the processor executing the computer program to perform the following steps:

[0178] Obtain the operating condition information of the vehicle;

[0179] The humidity control strategy is determined based on the operating condition information, and the control strategy includes at least one of closed-loop control strategy and open-loop control strategy.

[0180] The flow rate of the air pump is controlled according to the control strategy to adjust the output humidity of the humidity regulating device.

[0181] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0182] Obtain the operating condition information of the vehicle;

[0183] The humidity control strategy is determined based on the operating condition information, and the control strategy includes at least one of closed-loop control strategy and open-loop control strategy.

[0184] The flow rate of the air pump is controlled according to the control strategy to adjust the output humidity of the humidity regulating device.

[0185] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0186] Obtain the operating condition information of the vehicle;

[0187] The humidity control strategy is determined based on the operating condition information, and the control strategy includes at least one of closed-loop control strategy and open-loop control strategy.

[0188] The flow rate of the air pump is controlled according to the control strategy to adjust the output humidity of the humidity regulating device.

[0189] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0190] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0191] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0192] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A humidity regulating device, characterized in that, include: The system includes an intake pipe, compressor, air pump, switching circuit, evaporation chamber, pressure tank, and return tank; among which, The first end of the air inlet pipe is connected to the first end of the switching circuit via the air pump. The two second ends of the switching circuit are respectively connected to the first end of the pressure tank and the air inlet of the evaporation chamber. The second end of the pressure tank is connected to the return water tank. The pressure tank is also connected to the water inlet of the evaporation chamber. The air outlet of the evaporation chamber is connected to the inlet of the compressor via the second end of the air inlet pipe. The return outlet of the evaporation chamber is connected to the return water tank. When the switching circuit connects the water passage where the pressure tank is located, the air pump is used to increase the internal pressure of the pressure tank and force the liquid in the pressure tank to the evaporation chamber. When the liquid level in the evaporation chamber exceeds the maximum water level, the liquid in the evaporation chamber flows back to the return water tank. When the switching circuit is activated in the humidity regulation passage where the evaporation chamber is located, the air pump is used to transfer the gas transmitted by the air inlet pipe to the evaporation chamber, so that the gas in the evaporation chamber comes into contact with the vapor in the evaporation chamber to generate water vapor, which is then output to the compressor. The air outlet of the evaporation chamber is located at the top of the evaporation chamber and adjacent to the inlet of the compressor. An air passage pipe is provided inside the evaporation chamber, wherein the air passage pipe is in contact with the liquid inside the evaporation chamber, a first end of the air passage pipe is connected to the air inlet, and a second end of the air passage pipe is higher than the liquid level inside the evaporation chamber. The humidity regulating device further includes a controller and a humidity sensor located at the output port of the compressor. The controller is also connected to the air pump and the switching circuit. The controller is used to control the conduction state of the switching circuit and, based on the detection result of the humidity sensor, control the operating state and flow rate of the air pump to regulate humidity.

2. The humidity regulating device according to claim 1, characterized in that, The humidity regulating device also includes: A connecting switch is installed on the return water passage between the pressure tank and the return water tank to open the return water passage and guide the liquid from the return water tank to the pressure tank.

3. The humidity regulating device according to claim 1, characterized in that, The humidity regulating device further includes a heating pipeline, wherein the heating pipeline is connected to the pressure tank and the return tank respectively, the heating pipeline is used to transport the liquid, and a heater is provided on the heating pipeline for heating the liquid.

4. The humidity regulating device according to claim 1, characterized in that, The pressure tank is equipped with a water inlet pipe connected to the water inlet of the evaporation chamber, wherein the water inlet port of the water inlet pipe is located at the bottom of the pressure tank.

5. The humidity regulating device according to claim 1, characterized in that, The return water tank is located above the pressure water tank and is directly connected to the atmosphere, and the bottom of the return water tank is connected to the pressure water tank.

6. The humidity regulating device according to claim 1, characterized in that, The switching circuit includes two solenoid valves.

7. A vehicle, characterized in that, It includes a turbocharger and a humidity regulating device as described in any one of claims 1-6, wherein the evaporation chamber of the humidity regulating device is integrated into the housing of the turbocharger.

8. A humidity control method, characterized in that, The humidity control method, applied to the vehicle as described in claim 7, includes: Obtain the operating condition information of the vehicle; The humidity control strategy is determined based on the operating condition information, and the control strategy includes at least one of closed-loop control strategy and open-loop control strategy. The gas flow rate of the air pump is controlled according to the control strategy to adjust the output humidity of the humidity regulating device.

9. The humidity control method according to claim 8, characterized in that, The control strategy is an open-loop control strategy. The step of controlling the gas flow rate of the air pump according to the control strategy to adjust the humidity of the compressor includes: Obtain the ambient humidity detected by the humidity sensor located at the output port of the compressor; When the ambient humidity is lower than the target humidity, the air pump is controlled to operate and its flow rate is increased. The switching circuit is also controlled to open the humidity regulation path and close the water path.

10. The humidity control method according to claim 9, characterized in that, The method further includes: Obtain the ambient temperature of the humidity control device; The target humidity is determined based on the ambient temperature, the vehicle's operating condition information, and a preset humidity meter, wherein the preset humidity meter is used to characterize the correspondence between the ambient temperature, the vehicle's operating condition information, and the target humidity.

11. The humidity control method according to claim 9, characterized in that, The operating condition information includes engine speed and fuel level information, and the method further includes: The base value of the vehicle combustion timing is determined based on the engine speed, the fuel quantity information, and a preset table; wherein, the preset table is used to characterize the correspondence between the engine speed, the fuel quantity information, and the base value; The correction factor is determined based on the engine speed, the ambient humidity, and the correction factor table. The target timing is determined based on the correction factor and the base value; Adjust the combustion timing of the vehicle to the target timing.

12. The humidity control method according to claim 9, characterized in that, The method further includes: When the ambient humidity is greater than or equal to the target humidity, the air pump is controlled to stop working, and the switching circuit is controlled to disconnect the humidity regulation passage and open the water passage so that the liquid in the evaporation chamber flows back to the pressure tank.

13. The humidity control method according to claim 8, characterized in that, The control strategy is a closed-loop control strategy. The step of controlling the gas flow rate of the air pump according to the control strategy to adjust the humidity of the compressor includes: The vehicle's fuel resources, urea resources, fuel consumption rate, and nitrogen oxide production rate are obtained. Obtain a preset weight table and a predictive control model; wherein, the preset weight table is used to represent the correspondence between the operating condition information, ambient temperature and weight coefficients, the weight coefficients are the weight coefficients in the control model, and the predictive control model is used to predict the target nitrogen oxide emissions of the vehicle; The fuel resources and urea resources are input into the predictive control model, and the fuel consumption rate, nitrogen oxide generation rate, and weight coefficients in the predictive control model are adjusted according to the operating condition information and the ambient temperature to obtain the target nitrogen oxide emissions. The gas flow rate of the air pump is controlled according to the target nitrogen oxide emission level to regulate the humidity of the air compressor.

14. The humidity control method according to claim 13, characterized in that, The method further includes: The combustion timing is adjusted according to the target nitrogen oxide emission level to regulate the fuel consumption rate and the nitrogen oxide generation rate, so that the vehicle's nitrogen oxide emissions reach the target nitrogen oxide emission level.

15. The humidity control method according to claim 13, characterized in that, The step of inputting the fuel resources and urea resources into the predictive control model, and adjusting the fuel consumption rate, nitrogen oxide production rate, and weighting coefficients in the predictive control model according to the operating condition information and ambient temperature to obtain the target nitrogen oxide emissions includes: In the initial state, the fuel resources and the urea resources are input into the predictive control model, and the fuel consumption rate and the nitrogen oxide production rate are adjusted to obtain the first output result of the predictive control model; Based on the first output result, the operating condition information, and the ambient temperature feedback, the fuel consumption rate, the nitrogen oxide production rate, and the weighting coefficients in the predictive control model are adjusted to obtain the second output result of the predictive control model. When the first output result and the second output result do not meet the preset conditions, the fuel consumption rate and the nitrogen oxide production rate are adjusted according to the current output result of the current predictive control model until the output result of the predictive control model meets the preset conditions. The target nitrogen oxide emission is determined based on the fuel consumption rate and nitrogen oxide generation rate that meet the preset conditions.

16. A vehicle comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method described in any one of claims 8 to 15.

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