Fuel system, fuel supply method, engine, and fuel

Abstract

The invention relates to a fuel system, a fuel supply method, an engine, fuel, a computer readable storage medium and a computer program product. The fuel system comprises a liquid fuel storage assembly, wherein the liquid fuel storage assembly comprises a liquid fuel storage container and a first fuel pipeline connected with the storage container; the nanobubble dispersion system fuel preparation assembly comprises a nanobubble dispersion system fuel preparation part, a second fuel pipeline, a third fuel pipeline, a fourth fuel pipeline and a nanobubble dispersion system fuel storage container, the second fuel pipeline is connected with the first fuel pipeline and used for conveying liquid fuel to the fuel preparation part, and the third fuel pipeline is connected with the fourth fuel pipeline. The third fuel pipeline is used for conveying gas fuel to the fuel preparation part, and the fourth fuel pipeline is connected with the output end of the fuel preparation part and used for conveying the nanobubble dispersion system fuel to the downstream nanobubble dispersion system fuel storage container and / or the high-pressure fuel supply assembly.

Description

Technical Field

[0001] The present invention relates to a fuel system, a fuel supply method, an engine, a fuel, a computer-readable storage medium and a computer program product. Background Art

[0002] Green fuel efficient utilization technology represented by ammonia, methanol and hydrogen is an important technical support for achieving the "dual carbon" goal. At present, the industrial development of hydrogen fuel engines is relatively backward. Relatively speaking, ammonia and methanol engines have better market prospects. However, due to the problems of ignition and combustion difficulties and low combustion rate of engines burning ammonia and methanol single fuels, the power and economy are not high. Therefore, the existing ammonia and methanol engine development technology route is mainly based on the dual-fuel mode combined with diesel, especially in high-power engines.

[0003] The direct injection combustion of liquid ammonia and methanol is limited by the chemical activity of the fuel, making it difficult to ignite and the flame propagation slow. A large amount of diesel is required to participate in the combustion. On the one hand, this increases the complexity of the fuel system and increases the cost. On the other hand, the use of large amounts of diesel combustion does not fully utilize the fuel's huge advantages in carbon reduction.

[0004] Therefore, the art needs a fuel system, a fuel supply method, an engine, a fuel, a computer-readable storage medium, and a computer program product to solve at least one of the above technical problems. Summary of the invention

[0005] An object of the present invention is to provide a fuel system.

[0006] Another object of the present invention is to provide an engine.

[0007] Another object of the present invention is to provide a fuel supply method.

[0008] Another object of the present invention is to provide a computer-readable storage medium.

[0009] Another object of the present invention is to provide a computer program product.

[0010] Another object of the present invention is to provide a fuel.

[0011] According to one aspect of the present application, a fuel system includes: a liquid fuel storage component, including a liquid fuel storage container and a first fuel pipeline connected to the storage container; a nanobubble dispersion fuel preparation component, including a nanobubble dispersion fuel preparation part, a second fuel pipeline, a third fuel pipeline, a fourth fuel pipeline, and a nanobubble dispersion fuel storage container, wherein the second fuel pipeline is connected to the first fuel pipeline and is used to deliver liquid fuel to the fuel preparation part, the third fuel pipeline is used to deliver gas fuel to the fuel preparation part, and the fourth fuel pipeline is connected to the output end of the fuel preparation part and is used to deliver the nanobubble dispersion fuel to the downstream nanobubble dispersion fuel storage container and / or a high-pressure fuel supply component; a high-pressure fuel supply component includes a low-pressure pipeline, a high-pressure pipeline, a boost pump, and a common rail system, wherein the low-pressure pipeline is connected to the fourth fuel pipeline, and the low-pressure pipeline is connected to the input end of the boost pump, the output end of the boost pump is connected to the high-pressure pipeline, the high-pressure pipeline is connected to the common rail system, and the common rail system provides high-pressure nanobubble dispersion fuel to the fuel injection component.

[0012] In one or more embodiments of the fuel system, the liquid fuel storage assembly also has a pressure stabilizing module and a fuel parameter detection sensor, and the pressure stabilizing module is arranged at the outlet of the liquid fuel storage container; the number of the fuel parameter detection sensors is multiple, and they are at least arranged in the liquid fuel storage container and the first fuel pipeline.

[0013] In one or more embodiments of the fuel system, the nanobubble dispersion fuel preparation component also includes a gas fuel preparation unit, the input end of the gas fuel preparation unit is connected to the first fuel pipeline or the second fuel pipeline, and the output end is at least connected to the third fuel pipeline. The gas fuel is obtained by inputting the liquid fuel of the liquid fuel storage component into the gas fuel preparation unit, and is output to the nanobubble dispersion fuel preparation unit through the third fuel pipeline.

[0014] In one or more embodiments of the fuel system, the liquid fuel is liquid ammonia, the gaseous fuel is hydrogen, and the gaseous fuel of the fuel system is all provided by the gas fuel preparation unit.

[0015] In one or more embodiments of the fuel system, the nanobubble dispersion fuel preparation component further includes a gas fuel supply unit, an output end of the gas fuel supply unit is connected to the third fuel pipeline, and the third fuel pipeline directly outputs the gas fuel to the nanobubble dispersion fuel preparation unit.

[0016] An engine according to the second aspect of the present application comprises the fuel system as described in the first aspect, and a fuel injection assembly, wherein the common rail system provides high-pressure nanobubble dispersion fuel to the fuel injection assembly, and the fuel injection assembly injects the nanobubble dispersion fuel into a combustion chamber of the engine.

[0017] In one or more embodiments of the engine, a first portion of the liquid fuel is cracked to generate the gaseous fuel, and a second portion is used as liquid fuel of the nanobubble dispersion fuel, wherein the first portion is 3% wt.-15% wt., and the second portion is 85% wt.-97% wt.

[0018] A fuel supply method according to a third aspect of the present application is applied to the engine as described in the second aspect, and the supply method comprises: for a single execution cycle,

[0019] Obtain the current fuel level, pressure and temperature of the nanobubble dispersion fuel storage container;

[0020] Obtain engine operating conditions;

[0021] Obtaining the output flow rate of the nanobubble dispersion system fuel preparation unit;

[0022] The total mass of the fuel in the storage container is calculated based on the current fuel liquid level, pressure and temperature of the nanobubble dispersion fuel storage container. The bubble mass ratio in the current nanobubble dispersion fuel storage container is calculated based on the target bubble mass ratio output in the previous execution cycle and the mass flow rate of the output flow rate of the nanobubble dispersion fuel preparation unit, as well as the total mass of the fuel in the nanobubble dispersion fuel storage container. The calculation formula is:

[0023] y=(q*y'Δt+(M-qΔt)*y 1 ) / M

[0024] Among them, y is the mass ratio of fuel bubbles in the current storage container, y 1 and y' are the proportion of the bubble mass in the storage system and the output target in the previous execution cycle, respectively. M is the total mass of the fuel in the storage system at present. It is assumed that M remains unchanged during the execution cycle time interval Δt, which is achieved by the closed-loop control of the fuel level, ignoring the small changes in temperature, pressure and bubble ratio;

[0025] Compare the current bubble mass ratio and target mass ratio in the nanobubble dispersion fuel storage system to determine whether the absolute value error between the two is less than 1%. If so, end the execution cycle and enter the next execution cycle. If not, output the new target bubble mass ratio y'. y' is calculated according to y 1 The size relationship increases or decreases according to a certain slope.

[0026] According to a fourth aspect of the present application, a fuel is a nanobubble dispersion fuel, the fuel includes a liquid fuel and a gas fuel, the gas fuel is 10 2 The bubbles are in the form of nanometer scale and are uniformly dispersed in the liquid fuel, wherein the liquid fuel is liquid ammonia or methanol fuel, and the gas fuel is hydrogen.

[0027] According to a fifth aspect of the present application, a computer-readable storage medium has a computer program thereon, and the program is executed by a processor to implement the steps that can be executed by a computer in the fuel supply method as described in the third aspect.

[0028] A computer program product according to a sixth aspect of the present application includes a computer program, which, when executed by a processor, implements the steps that can be executed by a computer in the fuel supply method as described in the third aspect.

[0029] The beneficial effects of the above embodiments include, but are not limited to, reconstructing the chemical activity of fuels such as ammonia and methanol, and providing liquid nanobubble dispersed fuel to achieve ignition and combustion under a single fuel supply system, which is an important technical path to meet the user's needs for cost reduction and carbon reduction. It not only simplifies the fuel system and reduces costs, but also eliminates the need to use diesel combustion, further leveraging the fuel's advantages in carbon reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments. In the accompanying drawings, the same reference numerals always represent the same features. It should be noted that these drawings are only examples and are not drawn according to the conditions of equal scale, and should not be used as a limitation on the actual scope of protection required by the present invention, wherein:

[0031] Figure 1 A schematic block diagram of an engine according to an embodiment.

[0032] Figure 2 A schematic diagram of a liquid fuel storage assembly of a fuel system according to an embodiment.

[0033] Figure 3 FIG. 1 is a schematic diagram of a nanobubble dispersion fuel preparation assembly of a fuel system according to an embodiment of the present invention.

[0034] Figure 4 A schematic diagram of a high-pressure fuel supply assembly and a fuel injection assembly of a fuel system according to an embodiment.

[0035] Figure 5 The figure is a flow chart of a fuel supply method according to an embodiment. DETAILED DESCRIPTION

[0036] Reference will now be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and described below. Although the present invention will be described in conjunction with the exemplary embodiments, it should be appreciated that this specification is not intended to limit the present invention to those exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalent forms and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0037] In the following description, the orientation or positional relationship indicated by "inside", "outside", "upper", "lower", "top", "bottom" or other orientation terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "some embodiments" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "some embodiments" mentioned twice or multiple times in different locations in this specification do not necessarily refer to the same embodiment. In addition, some features, structures or characteristics of some embodiments of the present application can be appropriately combined.

[0039] The present application provides an engine, taking a marine engine as an example, but not limited to this. For example, it can be applicable to other application scenarios, such as heavy vehicles, railway trains, ground generators for power generation, etc. As long as the engine needs to adopt a clean fuel combustion solution, the fuel system, fuel supply method, computer-readable storage medium, and computer program product disclosed in the present application can be applied.

[0040] refer to Figure 1 As shown, in some embodiments, the engine may include a fuel system and a fuel injection assembly 4 which will be described in detail in the following embodiments. The common rail system of the fuel system provides high-pressure nanobubble dispersion fuel to the fuel injection assembly 4, and the fuel injection assembly 4 injects the nanobubble dispersion fuel into the combustion chamber 5 of the engine.

[0041] refer to Figures 1 to 4 As shown, in some embodiments, the fuel system may include a liquid fuel storage assembly 1 , a nanobubble dispersion fuel preparation assembly 2 , and a high-pressure fuel supply assembly 3 .

[0042] The liquid fuel storage assembly 1 may include a liquid fuel storage container 101 and a first fuel pipeline 103 connected to the storage container 101. In some embodiments, the liquid fuel storage assembly 1 may also include a pressure stabilizing module 102 and a fuel parameter detection sensor 104. The pressure stabilizing module 102 is arranged at the outlet of the liquid fuel storage container 101; the fuel parameter detection sensor 104 may be multiple and is at least arranged in the liquid fuel storage container 101 and the first fuel pipeline 103. The beneficial effect of this is that the pressure stabilizing module 102 is installed to ensure that the fuel transportation pressure is within an appropriate range, and the first fuel pipeline 103 and the fuel parameter sensor 104 should meet the corresponding standards to ensure the safety of fuel transportation.

[0043] The nanobubble dispersion fuel preparation assembly 2 includes a nanobubble dispersion fuel preparation unit 203, a second fuel pipeline 201, a third fuel pipeline 202, a fourth fuel pipeline 204, and a nanobubble dispersion fuel storage container 205. The second fuel pipeline 201 is connected to the first fuel pipeline 102 and is used to transport liquid fuel to the fuel preparation unit 203. It can be understood that the second fuel pipeline 201 and the first fuel pipeline 102 can be connected as one piece or separately connected through a joint. The second fuel pipeline 201 and the first fuel pipeline 102 can both use double-walled pipes, and a fuel parameter monitoring sensor 104 is arranged at each distance according to relevant standards to monitor information such as pressure, temperature, and leakage. The third fuel pipeline 202 is used to transport gaseous fuel to the fuel preparation unit 203. The fourth fuel pipeline 204 is connected to the output end of the fuel preparation unit 203 and is used to transport the nanobubble dispersion fuel to the downstream nanobubble dispersion fuel storage container 205 and / or the high-pressure fuel supply assembly 3.

[0044] The meaning of the nanobubble dispersion fuel preparation unit 203 is a system that can add homogeneous, stable, and certain number density of nanobubbles to the liquid through the charged bubble repulsion balance technology to form the liquid nanobubble dispersion fuel. A fuel inventory closed-loop control can be used between the nanobubble dispersion fuel preparation unit 203 and the nanobubble dispersion fuel storage container 205 to ensure that the fuel inventory in the nanobubble dispersion fuel storage container 205 is maintained at a certain level to ensure the fuel supply for the internal combustion engine to run for a long time. The specific fuel supply method will be described in detail below. Correspondingly, the nanobubble dispersion fuel refers to a system in which charged bubbles are prepared and the gas is stirred at a rate of about 10 2The nanometer-scale bubbles are evenly dispersed to form a dispersed fuel. The electrostatic repulsion of charged nanobubbles reaches a mechanical balance with the liquid pressure. Therefore, the bubbles only perform Brownian motion in the continuous medium. It is difficult for the bubbles to aggregate. Therefore, the dispersed system can exist stably for several months. The physical properties of the dispersed fuel are close to those of liquids, and it can be transported and supplied through an optimized fuel system. Furthermore, in addition to gas molecules, some highly active free radicals, such as hydroxyl and methyl, can also be dispersed into the continuous medium in the form of nanobubbles to form nanobubble dispersed fuel.

[0045] The specific material and structure of the fourth fuel pipeline 204 should take into account the physical properties of the dispersed fuel, and try to avoid cavitation, chemical corrosion and other problems in terms of material and design.

[0046] As for the source of gas fuel, in some embodiments, the nanobubble dispersion fuel preparation assembly 2 may further include a gas fuel preparation unit 206, the input end of the gas fuel preparation unit is connected to the first fuel pipeline 102 or the second fuel pipeline 201, and the output end is at least connected to the third fuel pipeline 202, and the gas fuel is obtained by inputting the liquid fuel of the liquid fuel storage assembly into the gas fuel preparation unit 206, and outputting the gas fuel to the nanobubble dispersion fuel preparation unit 203 through the third fuel pipeline 202. Taking liquid ammonia as an example, the gas fuel preparation unit 206 can directly use liquid ammonia cracking to prepare hydrogen when liquid ammonia is used as liquid fuel, that is, the gas fuel preparation unit 206 is an ammonia cracking hydrogen production system, so that the embodiment can be operated under a single fuel reserve condition and meet the zero carbon fuel source. The ratio of liquid fuel used for cracking and as fuel can be that the first part of the liquid ammonia fuel passes through the gas fuel preparation unit 206, cracks to produce hydrogen, and the hydrogen enters the nano bubble dispersion fuel preparation unit 203 through the third fuel pipeline 202. The liquid ammonia flow rate of the cracked hydrogen is automatically adjusted within a certain range according to the engine working condition requirements. Generally speaking, the first part is between 3% and 15% (mass ratio); and the second part, that is, the other part (that is, the remaining 85%-97%, correspondingly) of the liquid ammonia enters the nano bubble dispersion fuel preparation unit 203 through the second fuel pipeline 201.

[0047] In some embodiments, the source of the gas fuel can also be provided by an external gas source, and the nanobubble dispersion fuel preparation component 2 also includes a gas fuel supply unit 207, the output end of the gas fuel supply unit 207 is connected to the third fuel pipeline 202, and the third fuel pipeline 202 directly outputs the gas fuel of the gas fuel supply unit 207 to the nanobubble dispersion fuel preparation unit 203. For example, the liquid fuel may not be liquid ammonia, and the gas fuel may not be hydrogen. Taking methanol and methane as examples, methanol-methane nanobubbles can be prepared by liquefaction of LNG, etc. In these embodiments, the dispersion fuel preparation component 2 should include a gas fuel supply unit 207, that is, an external gas source; the gas fuel preparation unit 206 of the ammonia cracking hydrogen production system or the gas fuel supply unit 207 of the external gas source under different gas source conditions can be controlled by the three-way valve group 208. In this way, the fuel system has good versatility and can adapt to various green fuel combinations. Specifically, if liquid ammonia is not used to produce hydrogen, and the gas fuel supply unit 207 of the external gas source is used to supply gas to prepare the nanobubble dispersion fuel, the three-way valve group 208 can be adjusted, and the ammonia cracking hydrogen production system as the gas fuel preparation unit 206 does not work at the same time, and all liquid ammonia enters the nanobubble dispersion fuel preparation unit 203 through the second fuel pipeline 201. The nanobubble dispersion fuel preparation unit 203 uses the gas and liquid fuels transported by the third fuel pipeline 202 and the second fuel pipeline 201 as raw materials to prepare the nanobubble dispersion fuel.

[0048] The high-pressure fuel supply assembly 3 may include a low-pressure pipeline 301, a high-pressure pipeline 303, a boost pump 302, and a common rail system 304, wherein the low-pressure pipeline 301 is connected to the fourth fuel pipeline 203, and the low-pressure pipeline 301 is connected to the input end of the boost pump 302, the output end of the boost pump 302 is connected to the high-pressure pipeline 303, the high-pressure pipeline 303 is connected to the common rail system 304, and the common rail system 304 provides high-pressure nanobubble dispersion fuel to the fuel injection assembly 4. The fuel injection assembly 4 may include an injector 401, a fuel inlet pipeline 402, a control oil inlet pipeline 403, and a control oil return pipeline 404.

[0049] The specific fuel preparation and injection process can be, for example, taking liquid ammonia as the liquid fuel and hydrogen as the gas fuel, the hydrogen produced by the ammonia cracking hydrogen production system as the gas fuel preparation unit 206 and the liquid ammonia are prepared in the nano bubble dispersed fuel preparation unit 203 to form a dispersed fuel, and transported through the fourth fuel pipeline 204 to enter the nano bubble dispersed fuel storage container 205, and the fuel storage amount and bubble mass ratio in the nano bubble dispersed fuel storage container 20 are controlled by the ECU 500 (electronic control unit) between the nano bubble dispersed fuel preparation unit 203 and the nano bubble dispersed fuel storage container 205. The nano bubble dispersed fuel passes through the low pressure pipeline 301, and then is pressurized by the boost pump 302. The pressurized fuel passes through the high pressure pipeline 303 to enter the high pressure common rail 304, and finally enters the injector 401 through the fuel inlet pipeline 402 for in-cylinder injection. In addition, the injector 401 may also include a control oil circuit, where the control oil enters the control oil supply system 306 from the control oil tank 305 through the control oil pipeline 307, enters the injector 401 through the control oil inlet pipeline 403 after being pressurized, and then returns to the control oil tank 305 through the control oil return pipeline 404.

[0050] In some embodiments, reference Figure 5 As shown, in the engine, the control method for the nanobubble fuel in the nanobubble dispersion fuel storage system 205 is written into the ECU 500 in the form of code, and the ECU 500 can be connected to the nanobubble dispersion fuel preparation system 203 and the nanobubble dispersion fuel storage system 205 respectively through the wiring harness 600. The fuel supply method within a single task execution cycle, that is, the control method, can be the following steps:

[0051] S501: Start

[0052] S502: Read the current fuel level, pressure, and temperature information in the nanobubble dispersion fuel storage system 205

[0053] S503: Obtaining engine operating condition information

[0054] S504: Read the output flow rate of the nanobubble dispersion fuel preparation system 203

[0055] S505: Look up the table to obtain the target bubble mass ratio

[0056] S506: Calculate the total mass of fuel in the storage system based on the fuel level and pressure information read in S502, and calculate the bubble mass ratio in the current 205 nano bubble dispersion fuel storage system based on the target bubble mass ratio output in the previous execution cycle S508 and the mass flow rate in S504, as well as the total mass of fuel in the storage system.

[0057] The specific calculation formula is:

[0058] y=(q*y'Δt+(M-qΔt)*y 1 ) / M

[0059] Among them, y is the mass ratio of fuel bubbles in the current storage system, y 1 and y' are the proportion of the bubble mass in the storage system and the output target in the previous execution cycle, respectively. M is the total mass of the fuel in the storage system at present. It is assumed that M remains unchanged during the execution cycle time interval Δt, which is achieved by the closed-loop control of the fuel level, ignoring small changes in temperature, pressure and bubble ratio.

[0060] S507: Compare the current bubble mass percentage in the nanobubble dispersion fuel storage system 205 with the target mass percentage to determine whether the absolute value error between the two is less than 1%, if so, proceed to step S509, if not, proceed to step S508.

[0061] S508: Output the new target bubble mass ratio y', y' is calculated based on y 1 The size relationship increases or decreases according to a certain slope.

[0062] S509: End the execution cycle and enter the next execution cycle.

[0063] Another aspect of the present application further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the steps that can be executed by a computer in the fuel supply method described in the above embodiment are implemented. Please refer to the above description for details, which will not be repeated here.

[0064] In addition, it can be understood that the above-mentioned computer-readable storage medium can also be in a system form, that is, it includes multiple computer-readable storage sub-media, so as to jointly implement the steps of the fuel supply method described above through multiple computer-readable storage media.

[0065] In addition, another aspect of the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the fuel supply method described in the above embodiment that can be executed by a computer. Please refer to the above description for details, which will not be repeated here.

[0066] In addition, another aspect of the present application also provides a fuel, the fuel is a nano bubble dispersion fuel, the fuel includes a liquid fuel and a gas fuel, the gas fuel is 10 2 The nanometer-scale bubbles are uniformly dispersed in the liquid fuel, the liquid fuel is liquid ammonia or methanol fuel, and the gas fuel is hydrogen. For example, the nanobubble dispersed fuel composed of liquid ammonia-hydrogen is described below.

[0067] In summary, the beneficial effects of the fuel system, fuel supply method, engine, fuel, computer-readable storage medium, and computer program product introduced above include, but are not limited to, reconstructing the chemical activity of fuels such as ammonia and methanol, and providing liquid nanobubble dispersed fuel to achieve ignition and combustion under a single fuel supply system route, which is an important technical path to meet the user's needs for cost reduction and carbon reduction. It not only simplifies the fuel system and reduces costs, but also eliminates the need to use diesel combustion, further leveraging the fuel's advantages in carbon reduction. In particular, for liquid ammonia-hydrogen nanobubble dispersion fuel, especially a liquid ammonia fuel mixed with hydrogen nanobubbles, the chemical properties are affected by the properties of liquid fuel and gas fuel. Under the technical route described in the specific implementation method of the present invention, the liquid ammonia and hydrogen nanobubble dispersion fuel can be pressurized by a liquid pump, and direct injection into the cylinder is achieved through a high-pressure common rail system and a high-pressure injection system, and the injection pressure is ≥500bar. The mixed gas formed after the fuel is injected into the cylinder is an ammonia-hydrogen / air mixed gas, and the chemical activity of the fuel is optimized to a certain extent, which is easier to ignite / ignite. The combustion rate is faster than that of ammonia / air, but the knock tendency is much lower than that of hydrogen / air mixture.

[0068] The various illustrative logic modules and circuits described in conjunction with the embodiments disclosed herein may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in cooperation with a DSP core, or any other such configuration.

[0069] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, a storage medium may be integrated into a processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components.

[0070] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented as a computer program product in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a computer. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disk often reproduces data magnetically, while disc reproduces data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0071] Although the present invention is disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A fuel system, characterized in that: include: A liquid fuel storage assembly, comprising a liquid fuel storage container and a first fuel pipeline connected to the storage container; A nanobubble dispersion fuel preparation component, comprising a nanobubble dispersion fuel preparation unit, a second fuel pipeline, a third fuel pipeline, a fourth fuel pipeline, and a nanobubble dispersion fuel storage container, wherein the second fuel pipeline is connected to the first fuel pipeline and is used to deliver liquid fuel to the fuel preparation unit, the third fuel pipeline is used to deliver gaseous fuel to the fuel preparation unit, and the fourth fuel pipeline is connected to the output end of the fuel preparation unit and is used to deliver the nanobubble dispersion fuel to the downstream nanobubble dispersion fuel storage container and / or high-pressure fuel supply component; The high-pressure fuel supply assembly comprises a low-pressure pipeline, a high-pressure pipeline, a boost pump and a common rail system, wherein the low-pressure pipeline is connected to the fourth fuel pipeline, and the low-pressure pipeline is connected to the input end of the boost pump, the output end of the boost pump is connected to the high-pressure pipeline, and the high-pressure pipeline is connected to the common rail system, and the common rail system provides high-pressure nanobubble dispersion fuel to the fuel injection assembly.

2. The fuel system according to claim 1, characterized in that The liquid fuel storage assembly also has a pressure stabilizing module and a fuel parameter detection sensor. The pressure stabilizing module is arranged at the outlet of the liquid fuel storage container. The number of the fuel parameter detection sensors is multiple, and they are at least arranged in the liquid fuel storage container and the first fuel pipeline.

3. The fuel system according to claim 1, characterized in that The nanobubble dispersion fuel preparation component also includes a gas fuel preparation unit, the input end of the gas fuel preparation unit is connected to the first fuel pipeline or the second fuel pipeline, and the output end is at least connected to the third fuel pipeline. The gas fuel is obtained by inputting the liquid fuel of the liquid fuel storage component into the gas fuel preparation unit, and is output to the nanobubble dispersion fuel preparation unit through the third fuel pipeline.

4. The fuel system according to claim 3, characterized in that The liquid fuel is liquid ammonia, the gaseous fuel is hydrogen, and the gaseous fuel of the fuel system is all provided by the gaseous fuel preparation unit.

5. The fuel system according to claim 1, characterized in that The nanobubble dispersion fuel preparation component further includes a gas fuel supply unit, an output end of which is connected to the third fuel pipeline, and the third fuel pipeline directly outputs the gas fuel to the nanobubble dispersion fuel preparation unit.

6. An engine, characterized in that: The invention comprises a fuel system as claimed in any one of claims 1 to 5, and a fuel injection assembly, wherein the common rail system provides high-pressure nanobubble dispersion fuel to the fuel injection assembly, and the fuel injection assembly injects the nanobubble dispersion fuel into a combustion chamber of an engine.

7. The engine of claim 6, wherein a first portion of the liquid fuel is cracked to generate the gas fuel, and a second portion is used as liquid fuel of the nanobubble dispersion fuel, wherein the first portion is 3%wt.-15%wt., and the second portion is 85%wt.-97%wt.

8. A fuel supply method, characterized in that: Applied to the engine as claimed in claim 6 or 7, the supply method comprises: for a single execution cycle, Obtain the current fuel level, pressure and temperature of the nanobubble dispersion fuel storage container; Obtain engine operating conditions; Obtaining the output flow rate of the nanobubble dispersion system fuel preparation unit; The total mass of the fuel in the storage container is calculated based on the current fuel liquid level, pressure and temperature of the nanobubble dispersion fuel storage container. The bubble mass ratio in the current nanobubble dispersion fuel storage container is calculated based on the target bubble mass ratio output in the previous execution cycle and the mass flow rate of the output flow rate of the nanobubble dispersion fuel preparation unit, as well as the total mass of the fuel in the nanobubble dispersion fuel storage container. The calculation formula is: y=(q*y'Δt+(M-qΔt)*y1) / M Among them, y is the mass proportion of fuel bubbles in the current storage container, y1 and y' are the mass proportions of bubbles in the storage system and the output target in the previous execution cycle, respectively, and M is the total mass of fuel in the storage system. It is assumed that M remains unchanged during the execution cycle time interval Δt, which is achieved by the closed-loop control of the fuel level, ignoring small changes in temperature, pressure and bubble ratio; Compare the current bubble mass ratio and target mass ratio in the nanobubble dispersion fuel storage system to determine whether the absolute value error between the two is less than 1%. If so, end the execution cycle and enter the next execution cycle. If not, output a new target bubble mass ratio y', which increases or decreases according to a certain slope according to the size relationship with y1.

9. A computer-readable storage medium having a computer program thereon, characterized in that: The program is executed by the processor to implement the steps of the fuel supply method according to claim 8 that can be executed by a computer.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the computer-executable steps of the fuel supply method according to claim 8 are implemented.

11. A fuel, characterized in that: The fuel is a nano bubble dispersion fuel, and the fuel includes liquid fuel and gas fuel. The gas fuel is 10 2 The bubbles are in the form of nanometer scale and are uniformly dispersed in the liquid fuel, wherein the liquid fuel is liquid ammonia or methanol fuel, and the gas fuel is hydrogen.

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