Vehicle and vehicle control method

Abstract

The application discloses a vehicle and a vehicle control method. The vehicle comprises a nitrogen generation system, an engine, a first storage device and a second storage device. The nitrogen generation system is used for generating nitrogen in the form of by-products. The engine comprises an air inlet pipe. The air inlet end of the first storage device is connected with the nitrogen generation system, the air outlet end of the first storage device is connected with the air inlet pipe, the first storage device is used for storing nitrogen and can output nitrogen with a first pressure towards the air inlet pipe. The air inlet end of the second storage device is connected with the nitrogen generation system, the air outlet end of the second storage device is connected with the air inlet pipe, and the second storage device is used for storing nitrogen and can output nitrogen with a second pressure towards the air inlet pipe. The vehicle can recycle nitrogen, improve the control effect of nitrogen oxide emission in the engine, and reduce the risk of carbon deposition burning of the air inlet heating grid.

Description

Technical Field

[0001] This application relates to the field of nitrogen oxide emission control, and more particularly to a vehicle and a method for controlling vehicle emissions. Background Technology

[0002] In existing technologies, some special-purpose vehicles can generate nitrogen as a byproduct. For example, vehicles used in high-altitude operations and fresh produce transport vehicles both require oxygen production; oxygen generators produce oxygen from the air, with nitrogen being a byproduct. Another example is vehicles requiring liquid nitrogen refrigeration, where liquid nitrogen absorbs heat and produces nitrogen as a byproduct after cooling.

[0003] In the oxygen-rich environment of an engine's combustion chamber, nitrogen and oxygen can react to produce nitrogen oxides. Current technology controls the oxygen concentration in the combustion chamber by mixing engine exhaust with the intake air.

[0004] However, current transportation technologies directly emit nitrogen, resulting in resource waste. Furthermore, engine exhaust is affected by engine operating conditions, causing it to fail to meet oxygen concentration control requirements, leading to poor control of nitrogen oxide emissions from engines using existing technologies. Moreover, the presence of particulate matter in engine exhaust increases the risk of carbon buildup and burning of the intake air heater grille. Metal particles generated after the intake air heater grille burns out can enter the cylinder, causing piston damage or cylinder scoring. Summary of the Invention

[0005] The purpose of this application is to at least address the problems of nitrogen resource waste in existing transportation technologies, the poor control of nitrogen oxide emissions from engines in existing technologies, and the high risk of carbon buildup and burnout of intake air heating grids. This purpose is achieved through the following means:

[0006] The first aspect of this application discloses a vehicle comprising: a nitrogen generation system, an engine, a first storage device, and a second storage device. The nitrogen generation system is used to generate nitrogen as a byproduct; the engine includes an intake pipe; the first storage device has its intake end connected to the nitrogen generation system and its outlet end connected to the intake pipe, and is used to store nitrogen and is capable of outputting nitrogen at a first pressure toward the intake pipe; the second storage device has its intake end connected to the nitrogen generation system and its outlet end connected to the intake pipe, and is used to store nitrogen and is capable of outputting nitrogen at a second pressure toward the intake pipe; wherein the first pressure is greater than the second pressure.

[0007] The vehicle of this application includes a first storage device and a second storage device, both connected to a nitrogen generation system, enabling the storage and recovery of nitrogen generated by the system. When it is necessary to control the concentration of nitrogen oxides emitted by the engine, both the first and second storage devices inject nitrogen into the intake manifold, thereby reducing the oxygen concentration in the intake manifold and consequently lowering the concentration of nitrogen oxides emitted by the engine. The first storage device outputs nitrogen at a first pressure, and the second storage device outputs nitrogen at a second pressure. By adjusting the output of the first and second storage devices, the ratio of nitrogen at the first pressure to nitrogen at the second pressure entering the intake manifold can be controlled, thereby controlling the total volume and pressure of nitrogen entering the intake manifold. This allows for precise control of the oxygen concentration in the intake air, ensuring that the intake air meets the engine's oxygen requirements and improving the control of nitrogen oxide emissions. The vehicle of this application avoids introducing exhaust gas into the intake manifold, thereby reducing the concentration of particulate matter in the intake manifold and lowering the risk of carbon buildup and burning of the intake heating grid. By introducing nitrogen into the intake manifold through the first and second storage devices, the concentration of particulate matter in the intake manifold can be reduced, thereby lowering the risk of carbon buildup and burnout of the intake heating grid. In summary, the vehicle according to this application embodiment can regulate the oxygen concentration within the engine using nitrogen, thereby enabling nitrogen recovery and utilization, improving the control of nitrogen oxide emissions from the engine, and reducing the risk of carbon buildup and burnout of the intake heating grid.

[0008] In some embodiments, the first storage device includes a first air compressor and a first storage tank, the second storage device includes a second storage tank, the first storage tank is connected to the nitrogen generation system via the first air compressor, and the second storage tank is connected to the nitrogen generation system.

[0009] In some embodiments, the nitrogen generation system includes a first oxygen generating device and a second oxygen generating device, wherein the first storage tank is connected to the first oxygen generating device via the first air compressor, and the second storage tank is connected to the second oxygen generating device.

[0010] In some embodiments, the first oxygen generator is configured to produce nitrogen at a pressure lower than that produced by the second oxygen generator, and the second storage device includes a first pressure reducing valve, with the second storage tank connected to the inlet pipe via the first pressure reducing valve.

[0011] In some embodiments, the second oxygen generating device includes a second air compressor, a compressed air tank, and a nitrogen-oxygen separator. The second air compressor is connected to the compressed air tank and is used to compress air and deliver the compressed air to the compressed air tank. The nitrogen-oxygen separator is connected to the compressed air tank and is used to receive the compressed air and generate oxygen and nitrogen. The nitrogen-oxygen separator is connected to the second storage tank and is used to deliver nitrogen to the second storage tank.

[0012] In some embodiments, the compressed air tank is connected to the intake pipe via a second pressure reducing valve and is used to supply air to the intake pipe.

[0013] In some embodiments, the nitrogen generation system includes a first oxygen generating device and a liquid nitrogen refrigeration device, wherein the first oxygen generating device is connected to the first storage tank via the first air compressor, and the liquid nitrogen refrigeration device is connected to the second storage tank.

[0014] In some embodiments, the vehicle further includes a mixing injection device, wherein the first storage device and the second storage device are both connected to the mixing injection device, the air inlet of the mixing injection device is connected to the air inlet pipe, and the air outlet of the mixing injection device is used to mix the gas mixture and to inject the gas mixture into the air inlet pipe.

[0015] In some embodiments, the mixing and injection device includes a mixing valve, an injection canister, and an injection valve. The first storage device and the second storage device are both connected to the mixing valve. The mixing valve is used to mix the mixed gas. The mixing valve is connected to the injection canister and is used to deliver the mixed gas to the injection canister. The injection canister is connected to the injection valve and is used to deliver the mixed gas to the injection valve. The injection valve is located in the air inlet pipe and is used to inject the mixed gas into the air inlet pipe.

[0016] A second aspect of this application provides a vehicle control method applied to the vehicle described in the first aspect above, the vehicle control method comprising:

[0017] The operating parameters of the engine are obtained, and the theoretical nitrogen requirement is calculated based on the operating parameters, wherein the operating parameters are related parameters to the nitrogen oxide generation of the engine;

[0018] The engine speed is obtained, and a first preset array is retrieved. A nitrogen demand feedforward value is obtained based on the engine speed, the theoretical nitrogen demand, and the preset array. The first preset array is used to characterize the mapping relationship between the engine speed, the theoretical nitrogen demand, and the nitrogen demand feedforward value. The nitrogen demand feedforward value is used to adapt to the dynamic characteristics of the engine.

[0019] The second preset array is retrieved, and the correction parameters are obtained based on the nitrogen demand feedforward value and the second preset array. The second preset array is used to characterize the mapping relationship between the nitrogen demand feedforward value and the correction parameters, and the correction parameters are used to adapt to the dynamic characteristics of the engine.

[0020] The nitrogen demand feedforward value is corrected according to the correction parameter to obtain the actual nitrogen demand. The first nitrogen demand at the first pressure and the second nitrogen demand at the second pressure are calculated based on the actual nitrogen demand.

[0021] The first storage device is controlled to output nitrogen towards the air inlet pipe according to the first nitrogen demand, and the second storage device is controlled to output nitrogen towards the air inlet pipe according to the second nitrogen demand.

[0022] The vehicle control method of this application can calculate the actual nitrogen demand based on the dynamic characteristics of the engine, ensuring that the nitrogen entering the intake manifold meets the engine's oxygen demand, thereby improving the control effect on nitrogen oxide emissions from the engine. It calculates a first nitrogen demand at a first pressure and a second nitrogen demand at a second pressure based on the actual nitrogen demand, ensuring that the first and second pressure nitrogen enters the intake manifold in an appropriate ratio, thus ensuring that the intake air in the intake manifold meets the engine's oxygen demand, thereby improving the control effect on nitrogen oxide emissions from the engine. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0024] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of a vehicle according to a specific embodiment of this application;

[0026] Figure 3 This is a schematic diagram of a vehicle according to another specific embodiment of this application;

[0027] Figure 4 This is a schematic diagram of a vehicle according to yet another specific embodiment of this application;

[0028] Figure 5 This is a schematic diagram of a vehicle according to another specific embodiment of this application;

[0029] Figure 6 This is a flowchart of a vehicle control method according to an embodiment of this application.

[0030] The labels in the attached diagram are as follows:

[0031] 100. Means of transportation;

[0032] 10. Nitrogen generation system; 11. First oxygen generator; 12. Second oxygen generator; 121. Second air compressor; 122. Compressed air tank; 123. Nitrogen-oxygen separator; 124. Second pressure reducing valve; 13. Liquid nitrogen refrigeration unit; 131. Nitrogen recovery unit;

[0033] 20. Engine; 21. Intake pipe; 22. Exhaust pipe;

[0034] 30. First storage device; 31. First storage tank; 32. First air compressor;

[0035] 40. Second storage device; 41. Second storage tank; 42. First pressure reducing valve;

[0036] 50. Mixing injection device; 51. Mixing valve; 52. Injection tank; 53. Injection valve. Detailed Implementation

[0037] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0038] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0039] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure rotates, then an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0041] In the description of the application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", "height direction", "first direction", "second direction", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In existing technologies, some special-purpose vehicles can generate nitrogen as a byproduct. For example, vehicles used in high-altitude operations and fresh produce transport vehicles both require oxygen production; oxygen generators produce oxygen from the air, with nitrogen being a byproduct. Another example is vehicles requiring liquid nitrogen refrigeration, where liquid nitrogen absorbs heat and produces nitrogen as a byproduct after cooling.

[0044] In the oxygen-rich environment of an engine's combustion chamber, nitrogen and oxygen can react to produce nitrogen oxides. Current technology controls the oxygen concentration in the combustion chamber by mixing engine exhaust with the intake air.

[0045] However, current transportation technologies directly emit nitrogen, resulting in resource waste. Furthermore, engine exhaust is affected by engine operating conditions, causing it to fail to meet oxygen concentration control requirements, leading to poor control of nitrogen oxide emissions from engines using existing technologies. Moreover, the presence of particulate matter in engine exhaust increases the risk of carbon buildup and burning of the intake air heater grille. Metal particles generated after the intake air heater grille burns out can enter the cylinder, causing piston damage or cylinder scoring.

[0046] To address at least the problems of nitrogen resource waste in existing transportation vehicles, poor control of nitrogen oxide emissions from engines, and high risk of carbon buildup and burnout of intake heating grids, embodiments of this application propose a transportation vehicle that can regulate the oxygen concentration of the engine using nitrogen. This allows for nitrogen recycling, improved control of nitrogen oxide emissions from the engine, and reduced risk of carbon buildup and burnout of the intake heating grid.

[0047] An embodiment of this application also proposes a vehicle control method.

[0048] The following describes, with reference to the accompanying drawings, an embodiment of the present application, a vehicle 100 and a vehicle control method.

[0049] Combination Figures 1 to 5As shown, the vehicle 100 of this embodiment includes: a nitrogen generation system 10, an engine 20, a first storage device 30, and a second storage device 40. The nitrogen generation system 10 is used to generate nitrogen as a byproduct; the engine 20 includes an intake pipe 21; the intake end of the first storage device 30 is connected to the nitrogen generation system 10, and the outlet end of the first storage device 30 is connected to the intake pipe 21. The first storage device 30 is used to store nitrogen and is capable of outputting nitrogen with a first pressure; the intake end of the second storage device 40 is connected to the nitrogen generation system 10, and the outlet end of the second storage device 40 is connected to the intake pipe 21. The second storage device 40 is used to store nitrogen and is capable of outputting nitrogen with a second pressure; wherein, the first pressure is greater than the second pressure.

[0050] As an example, vehicle 100 may be a fresh produce transport vehicle, a passenger vehicle operating at high altitudes, a freight vehicle operating at high altitudes, a diesel-powered locomotive operating at high altitudes, or other vehicles requiring atmospheric or pressurized oxygen. Nitrogen generation system 10 includes an atmospheric or pressurized oxygen generator, which generates oxygen by separating air and produces nitrogen as a byproduct.

[0051] As an example, vehicle 100 is a vehicle with a hyperbaric oxygen chamber, a ship with a hyperbaric oxygen chamber, or other vehicle requiring high-pressure oxygen. Nitrogen generation system 10 includes a hyperbaric oxygen generator, which separates high-pressure air to produce high-pressure oxygen and generates high-pressure nitrogen as a byproduct.

[0052] As an example, vehicle 100 is a vehicle or vessel requiring liquid nitrogen refrigeration, such as an ocean-going fishing vessel with refrigerated hold, etc. Nitrogen generation system 10 includes a device for utilizing liquid nitrogen for refrigeration, which produces nitrogen as a byproduct after refrigeration.

[0053] Those skilled in the art will understand that, in addition to the examples described above, the vehicle 100 in this application embodiment can also be other vehicles with mobility functions. Besides the examples described above, the nitrogen generation system 10 can also include other types of devices capable of generating nitrogen as a byproduct. The nitrogen generation system 10 can include one device for generating nitrogen as a byproduct, or it can include multiple devices for generating nitrogen as byproducts.

[0054] Both the first storage device 30 and the second storage device 40 are connected to the nitrogen generation system 10, thereby enabling the storage of nitrogen generated by the nitrogen generation system 10 and the recovery of nitrogen.

[0055] When it is necessary to control the concentration of nitrogen oxides emitted by engine 20, both the first storage device 30 and the second storage device 40 inject nitrogen into the intake pipe 21, thereby reducing the oxygen concentration of the gas in the intake pipe 21, and thus reducing the concentration of nitrogen oxides emitted by engine 20.

[0056] The first storage device 30 can output nitrogen gas at a first pressure, and the second storage device 40 can output nitrogen gas at a second pressure. By adjusting the output of the first storage device 30 and the second storage device 40, the ratio of nitrogen gas at the first pressure and nitrogen gas at the second pressure entering the intake pipe 21 can be adjusted, thereby adjusting the total volume and total pressure of nitrogen gas entering the intake pipe 21. This allows for precise control of the oxygen concentration in the intake pipe 21 through nitrogen gas, ensuring that the intake air in the intake pipe 21 meets the oxygen demand of the engine 20, thus improving the control effect on nitrogen oxide emissions from the engine 20.

[0057] The vehicle 100 of this embodiment can avoid introducing exhaust gas into the intake pipe 21, thereby reducing the concentration of particulate matter in the intake pipe 21 and thus reducing the risk of carbon buildup and burnout of the intake heating grid. Introducing nitrogen into the intake pipe 21 through the first storage device 30 and the second storage device 40 can further reduce the concentration of particulate matter in the intake pipe 21, thereby reducing the risk of carbon buildup and burnout of the intake heating grid.

[0058] In summary, the vehicle 100 of this application embodiment can regulate the oxygen concentration in the engine 20 by using nitrogen, thereby enabling the recovery and reuse of nitrogen, improving the control effect on nitrogen oxide emissions in the engine 20, and reducing the risk of carbon buildup and burning of the intake heating grid.

[0059] Combination Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the first storage device 30 includes a first air compressor 32 and a first storage tank 31, and the second storage device 40 includes a second storage tank 41. The first storage tank 31 is connected to the nitrogen generation system 10 through the first air compressor 32, and the second storage tank 41 is connected to the nitrogen generation system 10.

[0060] An air compressor is short for an air compressor, which is used to compress gas.

[0061] The nitrogen generation system 10 is connected to the first storage tank 31 via the first air compressor 32. The nitrogen output from the nitrogen generation system 10 is first pressurized by the first air compressor 32 and then enters the first storage tank 31 for storage, thereby enabling the first storage tank 31 to store nitrogen under high pressure, which in turn improves the nitrogen storage efficiency of the first storage tank 31.

[0062] By storing nitrogen in the first storage tank 31 at high pressure, the first storage device 30 is able to output high-pressure nitrogen, thereby providing a prerequisite that the pressure of the nitrogen output by the first storage device 30 is greater than the pressure of the nitrogen output by the second storage device 40.

[0063] Combination Figure 2 , Figure 3 and Figure 4 In some specific embodiments, the first air compressor 32 is connected to the engine 20 via a transmission.

[0064] The first air compressor 32 is connected to the engine 20 via a transmission, allowing the engine 20 to directly drive the first air compressor 32. This eliminates the need for an additional power source for the first air compressor 32, thereby reducing the complexity of the vehicle 100 in this embodiment. Furthermore, the first air compressor 32 can recover and utilize the kinetic energy of the engine 20, thus increasing energy efficiency.

[0065] In some specific embodiments, both the first storage tank 31 and the second storage tank 41 are equipped with oxygen concentration sensors.

[0066] The oxygen concentration sensor can monitor the oxygen concentration mixed in the first storage tank 31, thereby enabling a more accurate calculation of the nitrogen output of the first storage device 30, and thus improving the control effect on nitrogen oxide emissions from the engine 20.

[0067] The oxygen concentration sensor can monitor the oxygen concentration mixed in the second storage tank 41, thereby enabling a more accurate calculation of the nitrogen output of the second storage device 40, which in turn improves the control effect on nitrogen oxide emissions from the engine 20.

[0068] In some specific embodiments, both the first storage tank 31 and the second storage tank 41 are equipped with pressure sensors and pressure relief ports.

[0069] The pressure sensor can monitor the pressure inside the first storage tank 31. When the pressure inside the first storage tank 31 rises abnormally, some of the nitrogen gas in the first storage tank 31 can be released through the pressure relief port, thereby improving the safety of the first storage tank 31.

[0070] The pressure sensor can monitor the pressure inside the second storage tank 41. When the pressure inside the second storage tank 41 rises abnormally, some of the nitrogen gas in the second storage tank 41 can be released through the pressure relief port, thereby improving the safety of the second storage tank 41.

[0071] like Figure 2 As shown, in some embodiments, the nitrogen generation system 10 includes a first oxygen generating device 11 and a second oxygen generating device 12. A first storage tank 31 is connected to the first oxygen generating device 11 via a first air compressor 32, and a second storage tank 41 is connected to the second oxygen generating device 12.

[0072] By setting up a first oxygen generator 11 and a second oxygen generator 12 that are independent of each other, the reliability of the nitrogen generation system 10 can be improved.

[0073] By connecting the first oxygen generating device 11 to the first storage tank 31 via the first air compressor 32, the first storage tank 31 can store nitrogen under high pressure, thereby improving the storage efficiency of the first storage tank 31.

[0074] As an example, both the first oxygen generator 11 and the second oxygen generator 12 are molecular sieve type oxygen generators. Molecular sieves can separate air to produce nitrogen and oxygen.

[0075] like Figure 2 As shown, in some embodiments, the first oxygen generator 11 is configured to generate nitrogen at a pressure lower than that of the nitrogen in the second oxygen generator 12, and the second storage device 40 includes a first pressure reducing valve 42, and the second storage tank 41 is connected to the air inlet pipe 21 through the first pressure reducing valve 42.

[0076] As an example, the first oxygen generating device 11 is an atmospheric pressure oxygen generating device, and the second oxygen generating device 12 is a high pressure oxygen generating device.

[0077] The pressure of nitrogen gas output from the second storage tank 41 can be reduced by the first pressure reducing valve 42, so that the pressure of nitrogen gas injected by the second storage device 40 is less than the pressure of the first storage device 30.

[0078] By connecting the first oxygen generator 11 to the first storage tank 31 via the first air compressor 32, and connecting the second oxygen generator 12 to the second storage tank 41, both the first storage tank 31 and the second storage tank 41 can store nitrogen at high pressure, thereby improving the nitrogen storage efficiency of the first storage tank 31 and the second storage tank 41.

[0079] The pressure of nitrogen gas output from the second storage tank 41 can be reduced to the required level by the first pressure reducing valve 42, so that the nitrogen gas entering the intake pipe 21 can accurately meet the oxygen demand of the engine 20, thereby improving the control effect of nitrogen oxide emissions from the engine 20.

[0080] like Figure 2 As shown, in some embodiments, the second oxygen generating device 12 includes a second air compressor 121, a compressed air tank 122, and a nitrogen-oxygen separator 123. The second air compressor 121 is connected to the compressed air tank 122 and is used to compress air and deliver the compressed air to the compressed air tank 122. The nitrogen-oxygen separator 123 is connected to the compressed air tank 122 and is used to receive the compressed air and generate oxygen and nitrogen. The nitrogen-oxygen separator 123 is connected to the second storage tank 41 and is used to deliver nitrogen to the second storage tank 41.

[0081] The second air compressor 121 compresses air and delivers it to the compressed air tank 122. The compression of air by the second air compressor 121 increases both the oxygen production pressure of the second oxygen generator 12 and the storage efficiency of the compressed air tank 122. The compressed air tank 122 then delivers the compressed air to the nitrogen-oxygen separator 123. The nitrogen-oxygen separator 123 uses the compressed air to produce high-pressure oxygen and generates high-pressure nitrogen as a byproduct. The nitrogen-oxygen separator 123 is connected to the second storage tank 41, allowing the generated nitrogen to be directionally delivered to the second storage tank 41.

[0082] The second oxygen generating device 12 of this application embodiment can efficiently recover and store high-pressure nitrogen through the second storage tank 41 while ensuring the production of high-pressure oxygen.

[0083] As an example, nitrogen-oxygen separator 123 is a molecular sieve type nitrogen-oxygen separator.

[0084] Combination Figure 2 , Figure 3 and Figure 4 In some specific embodiments, the second air compressor 121 is connected to the engine 20 via a transmission.

[0085] The second air compressor 121 is connected to the engine 20 via a transmission, allowing the engine 20 to directly drive the second air compressor 121. This eliminates the need for an additional power source for the second air compressor 121, thereby reducing the complexity of the vehicle 100 in this embodiment. Furthermore, the second air compressor 121 can recover and utilize the kinetic energy of the engine 20, thus increasing energy efficiency.

[0086] like Figure 2 As shown, in some embodiments, the compressed air tank 122 is connected to the air intake pipe 21 via a second pressure reducing valve 124 and is used to supply air to the air intake pipe 21.

[0087] The second pressure reducing valve 124 can reduce the air in the compressed air tank 122 to the required level. By delivering the air in the compressed air tank 122 into the intake manifold 21, the oxygen concentration in the intake manifold 21 can be adjusted, thereby precisely meeting the oxygen demand of the engine 20.

[0088] like Figure 3 As shown, in some other embodiments, the nitrogen generation system 10 includes a first oxygen generating device 11 and a liquid nitrogen refrigeration device 13. The first oxygen generating device 11 is connected to a first storage tank 31 via a first air compressor 32, and the liquid nitrogen refrigeration device 13 is connected to a second storage tank 41.

[0089] The liquid nitrogen refrigeration device 13 is a device that uses liquid nitrogen for refrigeration, such as a liquid nitrogen cold storage room installed on a deep-sea fishing vessel, a liquid nitrogen refrigerated cabin on a deep-sea fishing vessel, a liquid nitrogen refrigeration device on a transfer vehicle, etc.

[0090] The first oxygen generating device 11 and the liquid nitrogen refrigeration device 13 can provide independent nitrogen sources, thereby improving the reliability of the nitrogen generation system 10.

[0091] By connecting the first oxygen generating device 11 to the first storage tank 31 via the first air compressor 32, the first storage tank 31 can store nitrogen under high pressure, thereby improving the nitrogen storage efficiency of the first storage tank 31.

[0092] By connecting the first oxygen generating device 11 to the first storage tank 31 via the first air compressor 32 and the liquid nitrogen refrigeration device 13 to the second storage tank 41, the first storage tank 31 stores nitrogen at high pressure and the second storage tank 41 stores nitrogen at normal pressure, thereby providing conditions for the pressure of nitrogen output from the first storage device 30 to be greater than the pressure of nitrogen output from the second storage device 40.

[0093] like Figure 3 As shown, in some specific embodiments, the liquid nitrogen refrigeration device 13 includes a nitrogen recovery device 131, which is connected to the second storage tank 41. The nitrogen recovery device 131 is used to recover the nitrogen generated by the liquid nitrogen refrigeration device 13. By connecting the nitrogen recovery device 131 to the second storage tank 41, the nitrogen recovery device 131 can directly transport the recovered nitrogen into the second storage tank 41, thereby increasing the efficiency of nitrogen transportation.

[0094] like Figure 4 As shown, in some other embodiments, the nitrogen generation system 10 includes a first oxygen generating device 11, which is connected to a first storage tank 31 via a first air compressor 32, and is also connected to a second storage tank 41.

[0095] By connecting the first oxygen generating device 11 to the first storage tank 31 via the first air compressor 32, the first storage tank 31 can store nitrogen under high pressure, thereby improving the nitrogen storage efficiency of the first storage tank 31.

[0096] By connecting the first oxygen generator 11 to the first storage tank 31 via the first air compressor 32, and connecting the first oxygen generator 11 to the second storage tank 41, the first storage tank 31 stores nitrogen at high pressure, and the second storage tank 41 stores nitrogen at normal pressure, thereby providing conditions for the pressure of nitrogen output from the first storage device 30 to be greater than the pressure of nitrogen output from the second storage device 40.

[0097] like Figure 5 As shown, in some optional embodiments, the nitrogen generation system 10 includes a liquid nitrogen refrigeration device 13, which is connected to a first storage tank 31 via a first air compressor 32, and is also connected to a second storage tank 41.

[0098] By connecting the liquid nitrogen refrigeration device 13 to the first storage tank 31 via the first air compressor 32, the first storage tank 31 can store nitrogen under high pressure, thereby improving the nitrogen storage efficiency of the first storage tank 31.

[0099] By connecting the liquid nitrogen refrigeration device 13 to the first storage tank 31 via the first air compressor 32 and connecting the liquid nitrogen refrigeration device 13 to the second storage tank 41, the first storage tank 31 stores nitrogen at high pressure and the second storage tank 41 stores nitrogen at normal pressure, thereby providing conditions for the pressure of nitrogen output from the first storage device 30 to be greater than the pressure of nitrogen output from the second storage device 40.

[0100] like Figure 5 As shown, in some optional embodiments, the liquid nitrogen refrigeration device 13 includes a nitrogen recovery device 131, which is connected to a first storage tank 31 via a first air compressor 32 and also connected to a second storage tank 41. The nitrogen recovery device 131 is used to recover nitrogen generated by the liquid nitrogen refrigeration device 13, and can directly deliver the recovered nitrogen to the first air compressor 32 and the second storage tank 41, thereby increasing the efficiency of nitrogen delivery.

[0101] Combination Figure 2 , Figure 3 and Figure 4 As shown, in some specific embodiments, the engine 20 also includes an exhaust pipe 22, which is connected to the intake pipe 21 and is capable of discharging exhaust gas into the intake pipe 21.

[0102] The oxygen concentration in the intake manifold 21 can be precisely adjusted by regulating the exhaust gas from the engine 20.

[0103] In some specific embodiments, the intake manifold 21 is equipped with a turbocharger. The turbocharger is used to compress the intake air, thereby increasing the intake pressure and volume within the intake manifold 21, so that the intake pressure and volume can meet the combustion requirements of the engine 20.

[0104] Combination Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the vehicle 100 further includes a mixing injection device 50, and the first storage device 30 and the second storage device 40 are both connected to the air inlet end of the mixing injection device 50. The mixing injection device 50 is used to mix the gas mixture, and the mixing injection device 50 is connected to the air outlet end air inlet pipe 21 and is used to inject the gas mixture into the air inlet pipe 21.

[0105] The mixture can be formed by mixing nitrogen gas with a first pressure and nitrogen gas with a second pressure, or it can be formed by mixing nitrogen gas with a first pressure, nitrogen gas with a second pressure and other gases.

[0106] The mixing injection device 50 can fully mix the gas, so that the mixed gas entering the intake manifold 21 can be mixed more evenly with the engine intake air, thereby improving the uniformity of the gas entering the engine 20 and thus optimizing the combustion quality of the engine 20.

[0107] The mixing injection device 50 injects the mixed gas into the intake pipe 21. The mixing injection device 50 can accurately control the amount of mixed gas injected, thereby improving the accuracy of the amount of nitrogen entering the intake pipe 21, and thus meeting the oxygen demand of the engine 20, thereby improving the control effect of nitrogen oxide emissions from the engine 20.

[0108] Combination Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the mixing and injection device 50 includes a mixing valve 51, an injection canister 52, and an injection valve 53. The first storage device 30 and the second storage device 40 are both connected to the mixing valve 51. The mixing valve 51 is used to mix the gas mixture. The mixing valve 51 is connected to the injection canister 52 and is used to supply the gas mixture to the injection canister 52. The injection canister 52 is connected to the injection valve 53 and is used to supply the gas mixture to the injection valve 53. The injection valve 53 is located in the air inlet pipe 21 and is used to inject the gas mixture into the air inlet pipe 21.

[0109] The mixing valve 51 can uniformly mix nitrogen gas at a first pressure and nitrogen gas at a second pressure, and the resulting mixture is then delivered to the injection tank 52 for storage. The injection tank 52 can temporarily store the mixture and provides a stable gas supply to the injection valve 53. The injection tank 52 can also reduce gas pressure fluctuations, thereby improving the stability of the gas delivered to the injection valve 53.

[0110] like Figure 2 As shown, in some specific embodiments, the compressed air tank 122 is also connected to the mixing valve 51 via a second pressure reducing valve 124.

[0111] The mixing valve 51 can uniformly mix the air output from the compressed air tank 122, nitrogen with a first pressure, and nitrogen with a second pressure.

[0112] like Figure 6 As shown, the vehicle control method of this application embodiment is applied to the vehicle described in the above embodiment. The vehicle control method includes:

[0113] S100. Obtain the engine's operating parameters and calculate the theoretical nitrogen requirement based on the operating parameters, where the operating parameters are the parameters related to the engine's nitrogen oxide generation.

[0114] S200: Obtain the engine speed and retrieve the first preset array. Obtain the nitrogen demand feedforward value based on the engine speed, theoretical nitrogen demand and the preset array. The first preset array is used to characterize the mapping relationship between the engine speed, theoretical nitrogen demand and nitrogen demand feedforward value. The nitrogen demand feedforward value is used to adapt to the dynamic characteristics of the engine.

[0115] S300, retrieve the second preset array, and obtain the correction parameters based on the nitrogen demand feedforward value and the second preset array. The second preset array is used to characterize the mapping relationship between the nitrogen demand feedforward value and the correction parameters, and the correction parameters are used to adapt to the dynamic characteristics of the engine.

[0116] S400. Correct the nitrogen demand feedforward value according to the correction parameter to obtain the actual nitrogen demand, and calculate the first nitrogen demand at the first pressure and the second nitrogen demand at the second pressure according to the actual nitrogen demand.

[0117] S500: Control the first storage device to output nitrogen towards the air inlet pipe according to the first nitrogen demand, and control the second storage device to output nitrogen towards the air inlet pipe according to the second nitrogen demand.

[0118] The specific steps are as follows:

[0119] S100. Obtain the engine's operating parameters and calculate the theoretical nitrogen requirement based on the operating parameters, where the operating parameters are related parameters to the engine's nitrogen oxide generation.

[0120] As an example, operating parameters include one or more of the following: intake oxygen concentration, intake pressure, intake flow rate, exhaust nitrogen oxide concentration, and exhaust temperature.

[0121] Calculating the theoretical nitrogen requirement provides a basis for determining the actual nitrogen requirement.

[0122] S200: Obtain the engine speed and retrieve the first preset array. Obtain the nitrogen demand feedforward value based on the engine speed, the theoretical nitrogen demand, and the preset array. The first preset array is used to characterize the mapping relationship between the engine speed and the nitrogen demand feedforward value. The nitrogen demand feedforward value is used to adapt to the dynamic characteristics of the engine.

[0123] The nitrogen demand feedforward value is used to adapt to the dynamic characteristics of the engine; that is, the nitrogen demand feedforward value is a feedforward amount adapted to the dynamic characteristics of the engine.

[0124] The nitrogen demand feedforward value is determined by the specific engine model. Those skilled in the art can establish a mapping relationship between engine speed, theoretical nitrogen demand, and nitrogen demand feedforward value based on the specific engine type through experiments or theoretical calculations.

[0125] The first preset array can be a function, a table, or other array that can reflect the mapping relationship between rotational speed, theoretical nitrogen demand, and feedforward value of nitrogen demand. This application embodiment does not impose specific limitations.

[0126] The first preset array is retrieved, and the corresponding nitrogen demand feedforward value can be obtained from the first preset array based on the rotation speed and the theoretical nitrogen demand.

[0127] The nitrogen demand feedforward value adjusts the nitrogen supply in advance by predicting changes in engine operating conditions, thereby reducing the lag in nitrogen supply to the engine.

[0128] S300, retrieve the second preset array, and obtain the correction parameters based on the nitrogen demand feedforward value and the second preset array. The second preset array is used to characterize the mapping relationship between the nitrogen demand feedforward value and the correction parameters, and the correction parameters are used to adapt to the dynamic characteristics of the engine.

[0129] The correction parameters are used to adapt to the dynamic characteristics of the engine; in other words, the correction parameters are the amount of correction to adapt to the dynamic characteristics of the engine.

[0130] The correction parameters are determined by the specific engine model. Those skilled in the art can establish a mapping relationship between the nitrogen demand feedforward value and the correction parameters based on the specific engine type through experiments or theoretical calculations.

[0131] The second preset array can be a function, a table, or other array that can reflect the mapping relationship between the nitrogen demand feedforward value and the correction parameter. This application embodiment does not impose specific limitations.

[0132] The second preset array is retrieved, and the corresponding correction parameters can be obtained from the nitrogen demand feedforward value in the second preset array.

[0133] By adjusting the parameters, the effects of engine dynamic fluctuations can be offset, thereby making the nitrogen supply more closely match the actual operating conditions of the engine.

[0134] S400: Correct the nitrogen demand feedforward value according to the correction parameter to obtain the actual nitrogen demand, and calculate the first nitrogen demand at the first pressure and the second nitrogen demand at the second pressure based on the actual nitrogen demand.

[0135] By correcting the feedforward value of nitrogen demand by adjusting the parameters, the actual nitrogen demand can be obtained. The actual nitrogen demand can be fully adapted to the dynamic characteristics of the engine, so that the nitrogen entering the intake manifold can meet the oxygen demand of the engine, thereby improving the control effect of nitrogen oxide emissions in the engine.

[0136] Based on the actual nitrogen demand, the first nitrogen demand at the first pressure and the second nitrogen demand at the second pressure are calculated, thus determining the supply rates of the first and second nitrogen. By controlling the supply rates of the first and second pressure nitrogen, nitrogen at both pressures can be introduced into the intake pipe in an appropriate ratio, ensuring that the nitrogen entering the intake pipe meets the actual nitrogen demand.

[0137] S500: Control the first storage device to output nitrogen towards the air inlet pipe according to the first nitrogen demand, and control the second storage device to output nitrogen towards the air inlet pipe according to the second nitrogen demand.

[0138] The first storage device is controlled to output nitrogen based on the first nitrogen demand, and the second storage device is controlled to output nitrogen based on the second nitrogen demand, so that the air intake in the intake manifold can meet the oxygen demand of the engine, thereby improving the control effect of nitrogen oxide emissions in the engine.

[0139] The vehicle control method of this application can calculate the actual nitrogen demand based on the dynamic characteristics of the engine, ensuring that the nitrogen entering the intake manifold meets the engine's oxygen demand, thereby improving the control effect on nitrogen oxide emissions from the engine. It calculates a first nitrogen demand at a first pressure and a second nitrogen demand at a second pressure based on the actual nitrogen demand, ensuring that the first and second pressure nitrogen enters the intake manifold in an appropriate ratio, thus ensuring that the intake air in the intake manifold meets the engine's oxygen demand, thereby improving the control effect on nitrogen oxide emissions from the engine.

[0140] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A means of transportation, characterized in that, include: A nitrogen generation system used to produce nitrogen as a byproduct; Engine, including the intake manifold; A first storage device, wherein the inlet end of the first storage device is connected to the nitrogen generation system, and the outlet end of the first storage device is connected to the inlet pipe, the first storage device is used to store nitrogen and is capable of outputting nitrogen with a first pressure toward the inlet pipe; The second storage device has an inlet end connected to the nitrogen generation system and an outlet end connected to the inlet pipe. The second storage device is used to store nitrogen and can output nitrogen with a second pressure toward the inlet pipe. Wherein, the first pressure is greater than the second pressure; The first storage device includes a first air compressor and a first storage tank, and the second storage device includes a second storage tank. The first storage tank is connected to the nitrogen generation system through the first air compressor, and the second storage tank is connected to the nitrogen generation system. The nitrogen generation system includes a first oxygen generating device and a second oxygen generating device. The first storage tank is connected to the first oxygen generating device through the first air compressor, and the second storage tank is connected to the second oxygen generating device. The first oxygen generator is configured to produce nitrogen at a pressure lower than that produced by the second oxygen generator. The second storage device includes a first pressure reducing valve, and the second storage tank is connected to the inlet pipe via the first pressure reducing valve. The second oxygen generating device includes a second air compressor, a compressed air tank, and a nitrogen-oxygen separator. The second air compressor is connected to the compressed air tank and is used to compress air and deliver the compressed air to the compressed air tank. The nitrogen-oxygen separator is connected to the compressed air tank and is used to receive the compressed air and generate oxygen and nitrogen. The nitrogen-oxygen separator is connected to the second storage tank and is used to deliver nitrogen to the second storage tank.

2. The means of transportation according to claim 1, characterized in that, The compressed air tank is connected to the intake pipe via a second pressure reducing valve and is used to supply air to the intake pipe.

3. The means of transportation according to claim 1, characterized in that, The nitrogen generation system includes a first oxygen generating device and a liquid nitrogen refrigeration device. The first oxygen generating device is connected to the first storage tank via the first air compressor, and the liquid nitrogen refrigeration device is connected to the second storage tank.

4. The means of transport according to any one of claims 1 to 3, characterized in that, The vehicle also includes a mixing and injection device. The first storage device and the second storage device are both connected to the air inlet of the mixing and injection device. The air outlet of the mixing and injection device is connected to the air inlet pipe. The mixing and injection device is used to mix and inject the mixed air into the air inlet pipe.

5. The means of transportation according to claim 4, characterized in that, The mixing and injection device includes a mixing valve, an injection canister, and an injection valve. The first storage device and the second storage device are both connected to the mixing valve. The mixing valve is used to mix the mixed gas. The mixing valve is connected to the injection canister and is used to deliver the mixed gas to the injection canister. The injection canister is connected to the injection valve and is used to deliver the mixed gas to the injection valve. The injection valve is located in the air inlet pipe and is used to inject the mixed gas into the air inlet pipe.

6. A method for controlling a vehicle, characterized in that, Applied to any one of claims 1 to 5, the vehicle control method comprises: The operating parameters of the engine are obtained, and the theoretical nitrogen requirement is calculated based on the operating parameters, wherein the operating parameters are related parameters to the nitrogen oxide generation of the engine; The engine speed is obtained, and a first preset array is retrieved. A nitrogen demand feedforward value is obtained based on the engine speed, the theoretical nitrogen demand, and the preset array. The first preset array is used to characterize the mapping relationship between the engine speed, the theoretical nitrogen demand, and the nitrogen demand feedforward value. The nitrogen demand feedforward value is used to adapt to the dynamic characteristics of the engine. The second preset array is retrieved, and the correction parameters are obtained based on the nitrogen demand feedforward value and the second preset array. The second preset array is used to characterize the mapping relationship between the nitrogen demand feedforward value and the correction parameters, and the correction parameters are used to adapt to the dynamic characteristics of the engine. The nitrogen demand feedforward value is corrected according to the correction parameter to obtain the actual nitrogen demand. The first nitrogen demand at the first pressure and the second nitrogen demand at the second pressure are calculated based on the actual nitrogen demand. The first storage device is controlled to output nitrogen towards the air inlet pipe according to the first nitrogen demand, and the second storage device is controlled to output nitrogen towards the air inlet pipe according to the second nitrogen demand.

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