An ammonia supply device and method

Abstract

The application discloses an ammonia supply device and relates to the technical field of engines.The ammonia supply device comprises a compressor, an intercooler, a pressure stabilizing tank, a first ammonia valve, a second ammonia valve and a pressure reducing valve, the intercooler is provided with an air pipe, a liquid ammonia bottle and cooling water, and the liquid ammonia bottle and the air pipe are both immersed in the cooling water.After being heated by the compressor, the air reaches the air pipe and exchanges heat with the cooling water, the heat-exchanged cooling water transmits heat to the liquid ammonia bottle, and the liquid ammonia can be provided with latent heat of vaporization, ammonia gas reaches the pressure stabilizing tank through the pressure reducing valve, is mixed with the heat-exchanged air through the first ammonia valve and reaches the engine, and the engine economy is improved without additional power consumption of an electric heating device for heating.As the liquid ammonia is used for a period of time, the temperature and pressure in the liquid ammonia bottle decrease, ammonia gas can be mixed with pressurized air through the second ammonia valve and then enter the air pipe and reach the engine, the energy transmission path is relatively direct, the energy loss in the transmission process is reduced, and the engine is high in efficiency and low in emission.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to an ammonia supply device and method. Background Technology

[0002] Developing cleaner and more efficient engines is the goal of researchers in all engine fields, and developing zero-carbon fuels is an important technical means to achieve high-efficiency and low-emission engines.

[0003] Ammonia, as a zero-carbon fuel, holds significant potential. Ammonia is typically stored in liquid form in high-pressure cylinders. When used, the liquid ammonia needs to be vaporized before being injected into the engine cylinders. However, the vaporization process of liquid ammonia requires a large amount of heat; therefore, providing the necessary heat for vaporization is crucial.

[0004] Currently, electric heating is mainly used to provide the heat required for the vaporization of liquid ammonia.

[0005] However, electric heating requires a large amount of electrical energy, which will lead to a significant increase in engine energy consumption and is not conducive to achieving high-efficiency and low-emission engines. Summary of the Invention

[0006] In view of the above problems, this application provides an ammonia supply device and method to achieve the goal of high-efficiency and low-emission engine operation. The specific solution is as follows:

[0007] The first aspect of this application provides an ammonia supply system, which includes: a compressor, an intercooler, a pressure stabilizing tank, a first ammonia valve, a second ammonia valve, and a pressure reducing valve. The intercooler is provided with an air pipe, a liquid ammonia bottle, and cooling water. The liquid ammonia bottle and the air pipe are both immersed in the cooling water. The liquid ammonia bottle stores liquid ammonia.

[0008] The air outlet of the compressor is connected to the air inlet of the air pipe through a first pipe;

[0009] The air outlet of the air pipe is connected to the air intake of the engine via a second pipe;

[0010] The outlet of the liquid ammonia cylinder is connected to the inlet of the pressure stabilizing tank via a third pipe, and the pressure reducing valve is installed on the third pipe.

[0011] The first outlet of the pressure stabilizing tank is connected to the second pipe through the fourth pipe, and the first ammonia valve is installed on the fourth pipe.

[0012] The second outlet of the pressure stabilizing tank is connected to the first pipe through a fifth pipe, and the second ammonia valve is installed on the fifth pipe.

[0013] In one possible implementation, the system further includes a flow sensor disposed on the third pipe.

[0014] In one possible implementation, the system further includes a first temperature sensor and a second temperature sensor, the first temperature sensor being disposed on the intercooler to measure the temperature of the cooling water, and the second temperature sensor being disposed on the second pipe between the air outlet of the air pipe and the target connection point, the target connection point being the connection point between the second pipe and the fourth pipe.

[0015] In one possible implementation, the system further includes an electronic control unit, which is communicatively connected to the flow sensor, the first temperature sensor, the second temperature sensor, the pressure reducing valve, the first ammonia valve, and the second ammonia valve, respectively.

[0016] In one possible implementation, the system further includes a turbine connected to a compressor via a connecting shaft, the turbine's intake end being connected to the engine's exhaust end via a sixth pipe.

[0017] A second aspect of this application provides an ammonia supply method, applicable to any of the aforementioned ammonia supply systems, the method comprising:

[0018] When the ammonia flow rate on the third pipeline is greater than the ammonia flow rate required by the engine, the first ammonia valve and the pressure reducing valve are opened, and the second ammonia valve is closed.

[0019] When the ammonia flow rate on the third pipeline is not greater than the ammonia flow rate required by the engine, the second ammonia valve and the pressure reducing valve are opened, and the first ammonia valve is closed.

[0020] In one possible implementation, after controlling the first ammonia valve and the pressure reducing valve to open when the ammonia flow rate on the third pipe is greater than the ammonia flow rate required by the engine, and controlling the second ammonia valve to close, the method further includes:

[0021] If, after controlling the second ammonia valve and the pressure reducing valve to open, and controlling the first ammonia valve to close for a preset time, the ammonia flow rate on the third pipeline is still not greater than the ammonia flow rate required by the engine, then the first ammonia valve, the second ammonia valve, and the pressure reducing valve are all closed.

[0022] In one possible implementation, the system further includes a flow sensor disposed on a third pipe;

[0023] The ammonia flow rate on the third pipeline is the ammonia flow rate collected by the flow sensor.

[0024] In one possible implementation, the system further includes a first temperature sensor and a second temperature sensor, the first temperature sensor being disposed on the surface of the intercooler, and the second temperature sensor being disposed on the second pipe at a position before the connection with the fourth pipe.

[0025] After controlling the second ammonia valve and the pressure reducing valve to open when the ammonia flow rate on the third pipeline is not greater than the ammonia flow rate required by the engine, and controlling the first ammonia valve to close, the method further includes:

[0026] When the cooling water temperature collected by the first temperature sensor exceeds the first preset range, or the gas temperature collected by the second temperature sensor exceeds the second preset range, the flow rate of the cooling water is increased.

[0027] In one possible implementation, the system further includes an electronic control unit, which is communicatively connected to the flow sensor, the first temperature sensor, the second temperature sensor, the pressure reducing valve, the first ammonia valve, and the second ammonia valve, respectively; the ammonia supply method is applied to the electronic control unit in the ammonia supply system.

[0028] Based on the above technical solution, this application provides an ammonia supply device and method. The device includes: a compressor, an intercooler, a pressure stabilizing tank, a first ammonia valve, a second ammonia valve, and a pressure reducing valve. The intercooler contains an air pipe, a liquid ammonia cylinder, and cooling water. Both the liquid ammonia cylinder and the air pipe are immersed in the cooling water, and the liquid ammonia cylinder stores liquid ammonia. The outlet of the compressor is connected to the inlet of the air pipe via a first pipe; the outlet of the air pipe is connected to the inlet of the engine via a second pipe; the outlet of the liquid ammonia cylinder is connected to the inlet of the pressure stabilizing tank via a third pipe, and the pressure reducing valve is installed on the third pipe; the first outlet of the pressure stabilizing tank is connected to the second pipe via a fourth pipe, and the first ammonia valve is installed on the fourth pipe. Air passes through the compressor and the first pipe to the air pipe. The pressurized air exchanges heat with the cooling water, which then transfers heat to the liquid ammonia cylinder, providing the latent heat of vaporization for the liquid ammonia. The ammonia gas then passes through the pressure reducing valve on the third pipe to the pressure stabilizing tank, and then through the first ammonia valve on the fourth pipe to mix with the heat-exchanged air before reaching the engine. This eliminates the need for an electric heating device, improving engine fuel economy. The second outlet of the pressure stabilizing tank is connected to the first pipe via a fifth pipe, with a second ammonia valve located on the fifth pipe. As the liquid ammonia is used for a period of time, the temperature and pressure inside the liquid ammonia cylinder decrease. The ammonia gas can then mix with the pressurized air through the second ammonia valve on the fifth pipe and enter the air pipe, ultimately reaching the engine. This relatively direct energy transfer path reduces energy loss during transmission, contributing to high engine efficiency and low emissions. Attached Figure Description

[0029] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0030] Figure 1 This is a schematic diagram of an ammonia supply system provided in an embodiment of this application;

[0031] Figure 2 A structural cross-sectional view of a turbocharger provided in an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of another ammonia supply system provided in an embodiment of this application;

[0033] Figure 4 This is a schematic diagram of another ammonia supply system provided in the embodiments of this application;

[0034] Figure 5 A schematic diagram of another ammonia supply system provided in this application embodiment;

[0035] Figure 6 A schematic flowchart illustrating an ammonia supply method provided in this application embodiment;

[0036] Figure 7 This is a schematic diagram of the hardware structure of an ammonia supply device provided in an embodiment of this application;

[0037] Figure label:

[0038] 1-Compressor; 2-Intercooler; 3-Pressure stabilizing tank; 4-First ammonia valve; 5-Second ammonia valve; 6-Pressure reducing valve; 7-Air pipe; 8-Liquid ammonia cylinder; 9-Cooling water; 10-Turbine; 11-First pipeline; 12-Second pipeline; 13-Third pipeline; 14-Fourth pipeline; 15-Fifth pipeline; 16-Sixth pipeline; 17-Flow sensor; 18-First temperature sensor; 19-Second temperature sensor; 20-Electronic control unit. Detailed Implementation

[0039] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.

[0040] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0041] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a way of distinguishing objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements, but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0042] In order to achieve the goal of high-efficiency and low-emission engine, this application provides an ammonia supply system. The ammonia supply system provided in this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Please see the appendix Figure 1 , Figure 1 This is a schematic diagram of an ammonia supply system provided in an embodiment of this application. The system may include: a compressor 1, an intercooler 2, a pressure stabilizing tank 3, a first ammonia valve 4, a second ammonia valve 5, and a pressure reducing valve 6. The intercooler 2 is provided with an air pipe 7, a liquid ammonia bottle 8, and cooling water 9. Both the liquid ammonia bottle 8 and the air pipe 7 are immersed in the cooling water 9. The liquid ammonia bottle 8 stores liquid ammonia.

[0044] In this application, the compressor 1 and the turbine 10 can be connected by a rigid shaft to form a turbocharger, wherein the compressor 1 and the turbine 10 rotate at the same speed. For details, please refer to... Figure 2 As shown, Figure 2 This is a cross-sectional view of a turbocharger provided in an embodiment of this application. The compressor 1 on the left can compress air into high-pressure gas by mechanical means. During the compression process, the temperature of the air will rise significantly, which requires the consumption of mechanical energy, usually driven by the power generated by the rotation of the turbine 10 on the right.

[0045] Intercooler 2 lowers the temperature of the pressurized gas. Intercooler 2 includes an air pipe 7, a liquid ammonia cylinder 8, and cooling water 9. Air pipe 7 is used to transfer pressurized air. Liquid ammonia cylinder 8 stores liquid ammonia. Cooling water 9 serves as the cooling medium. Both liquid ammonia cylinder 8 and air pipe 7 are immersed in cooling water 9. Cooling water 9 exchanges heat with the pressurized gas in air pipe 7, and the cooled water 9 provides the latent heat of vaporization for the liquid ammonia in liquid ammonia cylinder 8.

[0046] The pressure stabilizing tank 3 can absorb gas pressure fluctuations and stabilize the gas pressure.

[0047] The first ammonia valve 4, the second ammonia valve 5, and the pressure reducing valve 6 can be opened or closed as needed to control and cut off the flow of ammonia. The first ammonia valve 4 and the second ammonia valve 5 are used to regulate the flow rate of ammonia, and the pressure reducing valve 6 is used to reduce the pressure and prevent liquid ammonia from flowing out.

[0048] It's important to note that latent heat of vaporization is the amount of heat a liquid absorbs to transform into a gaseous state at its boiling point. For example, water is a liquid at room temperature under 1 atmosphere of pressure. Above 100°C, it becomes a gas. When water reaches 100°C, it continuously absorbs heat to transform into a gaseous state; the heat absorbed in this process is the latent heat of vaporization.

[0049] The outlet of compressor 1 is connected to the inlet of air pipe 7 via a first pipe 11. The outlet of air pipe 7 is connected to the inlet of engine via a second pipe 12. The outlet of liquid ammonia cylinder 8 is connected to the inlet of pressure stabilizing tank 3 via a third pipe 13, and pressure reducing valve 6 is installed on the third pipe 13. The first outlet of pressure stabilizing tank 3 is connected to the second pipe 12 via a fourth pipe 14, and a first ammonia valve 4 is installed on the fourth pipe 14. The second outlet of pressure stabilizing tank 3 is connected to the first pipe 11 via a fifth pipe 15, and a second ammonia valve 5 is installed on the fifth pipe 15. The inlet of turbine 10 is connected to the outlet of engine via a sixth pipe 16.

[0050] The compressor 1 pressurizes the intake air and delivers it to the air pipe 7 through the first pipe 11. The pressurized air undergoes heat exchange in the air pipe 7 before finally entering the engine to provide the necessary oxygen for combustion. The liquid ammonia cylinder 8 serves as a storage source for ammonia and delivers it to the pressure stabilizing tank 3 through the third pipe 13 and the pressure reducing valve 6 to stabilize the ammonia pressure. The pressure stabilizing tank 3 has two outlets, connected to the second pipe 12 and the first pipe 11 respectively through the fourth pipe 14 and the fifth pipe 15. This means that the ammonia in the pressure stabilizing tank 3 can be mixed with air through these two pipes before being sent to the engine. The exhaust gas from the engine reaches the turbine 10 through the sixth pipe 16, and the rotation of the turbine 10 promotes the discharge of engine exhaust gas.

[0051] In summary, this application provides an ammonia supply device, comprising: a compressor, an intercooler, a pressure stabilizing tank, a first ammonia valve, a second ammonia valve, and a pressure reducing valve. The intercooler contains an air pipe, a liquid ammonia cylinder, and cooling water. Both the liquid ammonia cylinder and the air pipe are immersed in the cooling water, and the liquid ammonia cylinder stores liquid ammonia. The compressor's outlet is connected to the air pipe's inlet via a first pipe; the air pipe's outlet is connected to the engine's inlet via a second pipe; the liquid ammonia cylinder's outlet is connected to the pressure stabilizing tank's inlet via a third pipe, and the pressure reducing valve is located on the third pipe; the pressure stabilizing tank's first outlet is connected to the second pipe via a fourth pipe, and the first ammonia valve is located on the fourth pipe. Air passes through the compressor and the first pipe to the air pipe. The pressurized air exchanges heat with the cooling water, which then transfers heat to the liquid ammonia cylinder, providing the latent heat of vaporization for the liquid ammonia. The ammonia gas then passes through the pressure reducing valve on the third pipe to the pressure stabilizing tank, and then through the first ammonia valve on the fourth pipe to mix with the heat-exchanged air before reaching the engine. This eliminates the need for an electric heating device, improving engine fuel economy. The second outlet of the pressure stabilizing tank is connected to the first pipe via a fifth pipe, with a second ammonia valve located on the fifth pipe. As the liquid ammonia is used for a period of time, the temperature and pressure inside the liquid ammonia cylinder decrease. The ammonia gas can then mix with the pressurized air through the second ammonia valve on the fifth pipe and enter the air pipe, ultimately reaching the engine. This relatively direct energy transfer path reduces energy loss during transmission, contributing to high engine efficiency and low emissions.

[0052] Furthermore, based on the above system, a flow sensor 17 may also be included, which is disposed on the third pipe 13.

[0053] In this application, the flow sensor 17 can monitor the flow rate of ammonia in the third pipe 13 in real time, ensuring the real-time nature and accuracy of the data. For a clearer understanding, please refer to [the relevant documentation / reference]. Figure 3 , Figure 3 This is a schematic diagram of another ammonia supply system disclosed in an embodiment of this application.

[0054] In addition to being able to collect data through flow sensor 17, the following methods can also be used for data collection:

[0055] Differential pressure flowmeters measure flow rate by utilizing the relationship between the pressure difference generated when a fluid flows through a throttling device and the flow rate. This method involves installing a throttling device (such as an orifice plate or nozzle) in the pipeline and calculating the flow rate by measuring the pressure difference before and after the device. Differential pressure flowmeters have advantages such as simple structure, wide applicability, and high measurement accuracy.

[0056] Vortex flow meter: A flow meter designed based on the Karman vortex street principle. When fluid passes through a vortex flow meter, regular vortices are alternately generated on both sides of the vortex generator. The release frequency of these vortices is proportional to the fluid velocity. The flow rate is calculated by measuring the release frequency of the vortices. Vortex flow meters have advantages such as wide measurement range, high accuracy, and low pressure loss.

[0057] Velocity-area method: This method calculates flow rate by measuring the average velocity of the fluid within the pipe and the pipe's cross-sectional area. It requires measuring the velocity distribution of the fluid within the pipe, typically using equipment such as laser velocimeters or ultrasonic velocimeters. The total flow rate is then calculated based on the velocity distribution and the pipe's cross-sectional area. The velocity-area method is suitable for pipes with regular cross-sectional shapes and uniform velocity distribution.

[0058] Mass flow meter: Directly measures the mass flow rate of fluid passing through a pipe without needing to know parameters such as fluid density, temperature, and pressure. Mass flow meters typically utilize the relationship between certain physical properties of the fluid (such as thermal conductivity and vibration frequency) and the mass flow rate. This method offers advantages such as high measurement accuracy and minimal susceptibility to fluid parameters.

[0059] Furthermore, based on the above system, it may also include a first temperature sensor 18 and a second temperature sensor 19. The first temperature sensor 18 is installed on the intercooler 2 to measure the temperature of the cooling water 9. The second temperature sensor 19 is installed on the second pipe 12 between the air outlet of the air pipe 7 and the target connection point, which is the connection point between the second pipe 12 and the fourth pipe 14.

[0060] In this application, the first temperature sensor 18 collects the temperature of the cooling water 9, and the second temperature sensor 19 collects the temperature of the gas after heat exchange. This allows for timely detection of overheating of the cooling water 9, overheating of the air after heat exchange in the air pipe 7, and insufficient cooling of the intercooler 2, ensuring the normal operation of the intercooler 2 and preventing system damage or accidents. For further details, please refer to [link / reference needed]. Figure 4 , Figure 4 This is a schematic diagram of another ammonia supply system disclosed in the embodiments of this application.

[0061] Furthermore, based on the above system, an electronic control unit 20 may also be included, which is communicatively connected to the flow sensor 17, the first temperature sensor 18, the second temperature sensor 19, the pressure reducing valve 6, the first ammonia valve 4, and the second ammonia valve 5.

[0062] In this application, the electronic control unit 20 can be connected to sensors such as the flow sensor 17, the first temperature sensor 18, and the second temperature sensor 19 via a communication interface to collect data on key parameters of the system in real time, such as ammonia flow rate, coolant temperature, and gas temperature. The collected data is then rapidly analyzed, and control commands are issued based on the analysis results. These commands control the opening and closing of the pressure reducing valve 6, the first ammonia valve 4, and the second ammonia valve 5 to regulate the ammonia flow rate or pressure to meet the engine's operating requirements. Simultaneously, the electronic control unit 20 can quickly identify abnormalities and take corresponding protective measures to avoid system damage or safety hazards. For example, if the remaining ammonia in the liquid ammonia cylinder 8 is extremely low, requiring shutdown, the pressure reducing valve 6, the first ammonia valve 4, and the second ammonia valve 5 can be closed, and the high-pressure liquid ammonia cylinder can be replaced to supply gas to the test bench or the entire vehicle. For easier understanding, please refer to [the relevant documentation]. Figure 5 , Figure 5 This is a schematic diagram of another ammonia supply system disclosed in the embodiments of this application.

[0063] The above-disclosed embodiments of this application describe a type of ammonia supply system in detail. There are various methods that can be applied to the type of ammonia supply system of this application. Therefore, the ammonia supply method provided by this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] Please see the appendix Figure 6 , Figure 6 This is a schematic flowchart illustrating an ammonia supply method provided in an embodiment of this application. The method may include the following steps:

[0065] Step S101: Determine whether the ammonia flow rate on the third pipe is greater than the ammonia flow rate required by the engine.

[0066] It should be noted that the ammonia supply method can be applied to the electronic control unit of the ammonia supply system. The ammonia flow rate on the third pipeline can be the ammonia flow rate collected by the flow sensor.

[0067] In this application, the electronic control unit can determine whether the ammonia flow rate supplied to the engine (the ammonia flow rate collected by the flow sensor) meets the ammonia flow rate required by the engine. If the ammonia flow rate on the third pipe is greater than the ammonia flow rate required by the engine, it means that the ammonia flow rate supplied to the engine meets the ammonia flow rate required by the engine; if the ammonia flow rate on the third pipe is not greater than the ammonia flow rate required by the engine, it means that the ammonia flow rate supplied to the engine does not meet the ammonia flow rate required by the engine.

[0068] If the ammonia flow rate on the third pipe is greater than the ammonia flow rate required by the engine, then proceed to step 102.

[0069] Step S102: Control the first ammonia valve and the pressure reducing valve to open, and control the second ammonia valve to close.

[0070] In this application, the ammonia flow rate supplied to the engine is designed to maintain a basic ammonia flow rate while meeting the engine's required ammonia flow rate. The pressure reducing valve is opened to regulate the ammonia pressure, ensuring that the ammonia pressure supplied to the engine is within a suitable range. The opening of the first ammonia valve and the closing of the second ammonia valve allow air to pass through the compressor and the first pipe to reach the air pipe. The pressurized air exchanges heat with the cooling water, and the cooled water transfers heat to the liquid ammonia cylinder, providing the latent heat of vaporization for the liquid ammonia. The ammonia then passes through the pressure reducing valve on the third pipe to reach the pressure stabilizing tank, and then mixes with the heat-exchanged air through the first ammonia valve on the fourth pipe to reach the engine.

[0071] Furthermore, when the cooling water temperature collected by the first temperature sensor exceeds the first preset range, or the gas temperature collected by the second temperature sensor exceeds the second preset range, the flow rate of the cooling water can be increased.

[0072] Specifically, at the same engine speed, as the engine load increases, both the required air volume and ammonia volume increase. This increase in air volume depends on the increase in compressor outlet pressure. However, as the compressor outlet air pressure increases, the air temperature also increases, leading to an increase in the heat carried by the air. If this exceeds the latent heat of vaporization required by liquid ammonia, it will cause an increase in the water temperature in the intercooler and the gas temperature at the intercooler outlet, potentially exceeding the engine's required limits. Because the intercooler's cooling water subsequently cools the engine block and cylinders, exceeding the air temperature limit can lead to excessive engine knock pressure, potentially damaging the pistons. For example, if the cooling water temperature detected by the first temperature sensor exceeds the limit (typically between 90-110°C) or the gas temperature detected by the second temperature sensor exceeds the limit (typically between 50-60°C), then the cooling water flow rate needs to be increased to keep both the cooling water temperature and the intercooler outlet air temperature within the limits.

[0073] If the ammonia flow rate on the third pipe is not greater than the ammonia flow rate required by the engine, proceed to step 103.

[0074] Step S103: Control the second ammonia valve and the pressure reducing valve to open, and control the first ammonia valve to close.

[0075] In this application, when the ammonia flow rate supplied to the engine does not meet the engine's required ammonia flow rate, the aim is to increase the ammonia flow rate. The pressure reducing valve is opened to regulate the ammonia pressure, ensuring that the ammonia pressure supplied to the engine is within a suitable range. The first ammonia valve is closed and the second ammonia valve is open to allow ammonia to mix with pressurized air through the second ammonia valve on the fifth pipe and enter the air pipe. The gas in the air pipe exchanges heat with the cooling water, and the heat-exchanged gas then reaches the engine through the second pipe. This relatively direct energy transfer path reduces energy loss during the transfer process.

[0076] Furthermore, based on the above methods, it may also include:

[0077] Step S104: If the ammonia flow rate on the third pipeline is still not greater than the ammonia flow rate required by the engine after the second ammonia valve and the pressure reducing valve are opened and the first ammonia valve is closed for a preset time, then the first ammonia valve, the second ammonia valve and the pressure reducing valve are all closed.

[0078] In this application, this step is a safety or fault handling mechanism designed to take further action (shutdown) if the problem persists after attempts to increase the ammonia supply (e.g., very little ammonia remains in the liquid ammonia cylinder). Specifically, if the ammonia flow remains insufficient after a preset period, the system will shut off all relevant valves to prevent further ineffective supply or potential system damage. The system may then issue an alarm to notify operators or maintenance personnel to investigate the problem with the ammonia supply system and take appropriate repair measures.

[0079] In summary, the ammonia supply method provided in this application enables flexible adjustment of the ammonia supply path through a first ammonia valve and a second ammonia valve according to the ammonia flow rate required by the engine. Then, the heat required for the vaporization of liquid ammonia is provided according to the corresponding method of each supply path. This method can stably supply ammonia to the engine to meet the engine's needs, while also taking into account the engine's safety hazards, which is conducive to achieving high-efficiency and low-emission engine.

[0080] This application also provides an electronic device in its embodiments. (See reference...) Figure 7 The diagram illustrates a structural schematic suitable for implementing the electronic device in the embodiments of this application. The electronic device in the embodiments of this application may include, but is not limited to, fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 7 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0081] like Figure 7As shown, the electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 701, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 702 or a program loaded from a storage device 708 into a random access memory (RAM) 703. When the electronic device is powered on, the RAM 703 also stores various programs and data required for the operation of the electronic device. The processing unit 701, ROM 702, and RAM 703 are interconnected via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0082] Typically, the following devices can be connected to I / O interface 705: input devices 707 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 707 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 708 including, for example, memory cards, hard drives, etc.; and communication devices 709. Communication device 709 allows electronic devices to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 7 Electronic devices with various devices are shown, but it should be understood that it is not required to implement or have all of the devices shown. More or fewer devices may be implemented or have alternatively.

[0083] This application also provides a computer program product including computer-readable instructions, which, when executed on an electronic device, cause the electronic device to implement any of the ammonia supply methods provided in this application.

[0084] This application also provides a computer-readable storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any of the ammonia supply methods provided in this application.

[0085] It should also be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. In addition, in the device embodiment drawings provided in this application, the connection relationship between modules indicates that they have a communication connection, which can be implemented as one or more communication buses or signal lines.

[0086] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware, or it can be implemented by special-purpose hardware including application-specific integrated circuits, special-purpose CPUs, special-purpose memory, special-purpose components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for this application, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk, or optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, training equipment, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0087] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product.

[0088] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, training device, or data center to another website, computer, training device, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

Claims

1. An ammonia supply system, characterized in that, The system includes a compressor, an intercooler, a pressure stabilizing tank, a first ammonia valve, a second ammonia valve, and a pressure reducing valve. The intercooler is equipped with an air pipe, a liquid ammonia cylinder, and cooling water. The liquid ammonia cylinder and the air pipe are both immersed in the cooling water. The liquid ammonia cylinder stores liquid ammonia. The air outlet of the compressor is connected to the air inlet of the air pipe through a first pipe; The air outlet of the air pipe is connected to the air intake of the engine via a second pipe; The outlet of the liquid ammonia cylinder is connected to the inlet of the pressure stabilizing tank via a third pipe, and the pressure reducing valve is installed on the third pipe. The first outlet of the pressure stabilizing tank is connected to the second pipe through the fourth pipe, and the first ammonia valve is installed on the fourth pipe. The second outlet of the pressure stabilizing tank is connected to the first pipe through a fifth pipe, and the second ammonia valve is installed on the fifth pipe.

2. The ammonia supply system according to claim 1, characterized in that, The system also includes a flow sensor, which is mounted on the third pipe.

3. The ammonia supply system according to claim 2, characterized in that, The system also includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed on the intercooler to measure the temperature of the cooling water. The second temperature sensor is disposed on the second pipe between the air outlet of the air pipe and the target connection point, which is the connection point between the second pipe and the fourth pipe.

4. The ammonia supply system according to claim 3, characterized in that, The system also includes an electronic control unit, which is communicatively connected to the flow sensor, the first temperature sensor, the second temperature sensor, the pressure reducing valve, the first ammonia valve, and the second ammonia valve.

5. The ammonia supply system according to claim 1, characterized in that, The system also includes a turbine, which is connected to the compressor via a connecting shaft, and the turbine's intake end is connected to the engine's exhaust end via a sixth pipe.

6. A method for supplying ammonia, characterized in that, Applied to the ammonia supply system according to any one of claims 1-5, the method comprises: When the ammonia flow rate on the third pipeline is greater than the ammonia flow rate required by the engine, the first ammonia valve and the pressure reducing valve are opened, and the second ammonia valve is closed. When the ammonia flow rate on the third pipeline is not greater than the ammonia flow rate required by the engine, the second ammonia valve and the pressure reducing valve are opened, and the first ammonia valve is closed.

7. The ammonia supply method according to claim 6, characterized in that, After controlling the first ammonia valve and the pressure reducing valve to open and the second ammonia valve to close when the ammonia flow rate on the third pipeline is greater than the ammonia flow rate required by the engine, the method further includes: If, after controlling the second ammonia valve and the pressure reducing valve to open, and controlling the first ammonia valve to close for a preset time, the ammonia flow rate on the third pipeline is still not greater than the ammonia flow rate required by the engine, then the first ammonia valve, the second ammonia valve, and the pressure reducing valve are all closed.

8. The ammonia supply method according to claim 6 or 7, characterized in that, The system also includes a flow sensor, which is mounted on the third pipe; The ammonia flow rate on the third pipeline is the ammonia flow rate collected by the flow sensor.

9. The ammonia supply method according to claim 8, characterized in that, The system also includes a first temperature sensor and a second temperature sensor. The first temperature sensor is disposed on the surface of the intercooler, and the second temperature sensor is disposed on the second pipe before the connection between the second pipe and the fourth pipe. After controlling the second ammonia valve and the pressure reducing valve to open when the ammonia flow rate on the third pipeline is not greater than the ammonia flow rate required by the engine, and controlling the first ammonia valve to close, the method further includes: When the cooling water temperature collected by the first temperature sensor exceeds the first preset range, or the gas temperature collected by the second temperature sensor exceeds the second preset range, the flow rate of the cooling water is increased.

10. The ammonia supply method according to claim 9, characterized in that, The system also includes an electronic control unit, which is communicatively connected to the flow sensor, the first temperature sensor, the second temperature sensor, the pressure reducing valve, the first ammonia valve, and the second ammonia valve, respectively; the ammonia supply method is applied to the electronic control unit in the ammonia supply system.

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