Hydrogen engine detonation suppression water spraying system and control method

Abstract

The invention discloses a hydrogen engine detonation suppression water spray system and a control method, and the control method comprises the following steps: applying to the hydrogen engine detonation suppression water spray system; the knocking suppression water spraying system of the hydrogen engine at least comprises the hydrogen engine, a water tank, an electric heater connected with the water tank and a water spraying nozzle communicated with the water tank. The hydrogen engine comprises a high-compression-ratio piston combustion chamber, a gas inlet pipeline and a gas outlet pipeline are arranged in the high-compression-ratio piston combustion chamber, and the water spraying nozzle is communicated with the gas inlet pipeline; the knocking water spraying restraining method for the hydrogen engine comprises the following steps that the working load of the hydrogen engine is obtained; determining control information of a water spray nozzle according to the workload; and adjusting the water spray nozzle to spray liquid water or gaseous water according to the control information. According to the invention, the problem of abnormal combustion such as preignition / knocking is solved, the power density and the effective thermal efficiency are improved, and the transient response performance is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engines, in particular to a water injection system for suppressing knock of a hydrogen engine and a control method. BACKGROUND

[0002] Hydrogen is a gas at normal temperature and pressure, has low ignition energy, about 0.019 MJ (the minimum ignition energy of gasoline is 0.24 MJ), high fuel heat value, and fast flame propagation speed. Due to the extremely low ignition energy of hydrogen, its application as a fuel in an engine has a large tendency to knock. To solve the problem of knocking, a hydrogen engine usually adopts a lean-burn technical route, but this brings problems such as poor transient response, low power density, and poor thermal efficiency due to prolonged combustion duration. At the same time, although the lean-burn technical route can alleviate the problem of knocking to some extent, it still cannot be controlled within an acceptable range. The hydrogen engine increases a water injection nozzle in the intake port and matches a water injection system, which can be combined with a high-compression-ratio combustion system of the hydrogen engine to achieve flexible switching between liquid water and gaseous water injection under different working conditions, effectively suppresses the knocking of the hydrogen engine, and realizes the dual improvement of thermal efficiency and reliability.

[0003] The existing technologies for engine exhaust particulate filter catalysts and control methods include: Patent CN113586229A discloses a hydrogen fuel engine with in-cylinder water injection and a control method, which specifically designs a spark-ignition engine with combined hydrogen injection in the intake port and water injection in the cylinder and a control method. The engine includes an intake system, a hydrogen co-injection system, an in-cylinder water injection system, and an electronic control system. The ECU determines the crankshaft position and speed through a crankshaft position sensor and a speed sensor, and determines the occurrence of knocking according to the knocking sensor signal. The water pump pressure and the water injector pulse width are adjusted according to the knocking signal to control the in-cylinder combustion. The engine and the control method can eliminate the knocking phenomenon of the hydrogen engine, reduce the emission of nitrogen oxides, and improve the working efficiency. However, liquid water is injected in the entire water injection range, and the water injection pressure is low, which causes poor atomization of the water mist, leading to the problem of water droplets condensing and entering the cylinder, causing reliability problems.

[0004] Patent CN117780522B discloses a hydrogen engine control method and device, a vehicle, and a storage medium, which solves the problem of large knocking tendency of the hydrogen engine, which limits the improvement of the compression ratio of the hydrogen engine, and further limits the improvement of the thermal efficiency of the hydrogen engine. The patent uses an EGR (exhaust gas recirculation) system based on a fixed compression ratio to reduce the in-cylinder combustion temperature to suppress the knocking problem of the hydrogen engine. However, the patent technology loses thermal efficiency in the low-load region.

[0005] The patent CN21483676U invents a fuel mixing system for preventing hydrogen internal combustion engine knock, which includes a cylinder, a hydrogen intake system, an EGR exhaust gas recirculation system and an ECU control system. The hydrogen intake system and the EGR exhaust gas recirculation system are connected with the ECU control system. The exhaust gas in the EGR exhaust gas recirculation system is circulated into the cylinder, which increases the inert gas in the cylinder and reduces the combustion speed of hydrogen, effectively avoiding the knock phenomenon. This patent reduces the hydrogen combustion speed in the engine knock working condition area to avoid knock, but it worsens the combustion performance and reduces the engine thermal efficiency.

[0006] The patent CN101776032B invents an engine knock control device and method, which can sense the pressure state of each cylinder of the engine and individually set each cylinder according to the sensing results, so as to individually process each cylinder and better control the knock phenomenon. This patent realizes closed-loop control of knock monitoring and can realize separate cylinder processing of the combustion state. This patent is only a control monitoring method and device, and uses spark timing adjustment to process knock, which is a single and limited technical means and sacrifices combustion performance.

[0007] The patent CN116816522A invents a method and device for determining engine knock, a vehicle and a storage medium. The method includes obtaining an engine knock intensity relationship table and a current working condition of the engine to determine a current knock intensity value of the engine, and comparing the current knock intensity value with a preset knock threshold to accurately determine whether knock occurs. This patent is only a knock judgment method and does not involve measures to solve the problem of knock.

[0008] The patent 115419523B invents a hydrogen internal combustion engine control device based on controllable mixed gas activity, which includes an exhaust system, a fuel supply and ignition system and a water and heat management system. The exhaust system includes an exhaust gas recirculation system installed between the intake and exhaust system of the hydrogen internal combustion engine. The exhaust gas recirculation system includes an exhaust gas recirculation pipe and an exhaust gas recirculation water sprayer. The exhaust gas recirculation pipe is connected to the intake and exhaust pipe, and the exhaust gas recirculation water sprayer is fixedly installed on the exhaust gas recirculation pipe. The fuel supply and ignition system includes an in-cylinder hydrogen injector installed on the cylinder head of the hydrogen internal combustion engine. The water and heat management system includes a water collector and a water reservoir. The water reservoir includes an in-cylinder water sprayer installed on the cylinder head of the hydrogen internal combustion engine. Through this invention, hydrogen and water are directly injected into the cylinder, the timing of hydrogen and water injection is controlled, the combustion speed of the hydrogen internal combustion engine is adjusted, the cylinder combustion temperature is reduced, nitrogen oxide and heat loss are reduced, and the thermal efficiency and economy of the internal combustion engine are improved. This patent invents a water and heat management system to realize the recycling and injection of water in a closed loop, but it sacrifices the thermal efficiency of the hydrogen internal combustion engine while controlling the combustion speed to reduce knock.

[0009] Patent CN116291906A invented a hydrogen fuel internal combustion engine abnormal combustion control method and system. The method control steps: collect the current abnormal combustion signal, judge whether backfire, early combustion or knock occurs; when it is determined that backfire occurs and the engine is in high load operation state, water cooling control is performed on the cylinder according to the intake pipe pressure intensity value; when it is in low load operation state, the hydrogen concentration in the cylinder is controlled by reducing the hydrogen supply amount. This patent realizes the control and solution of different load area targeted early combustion and other abnormal combustion problems, but cannot fully develop the combustion efficiency potential.

[0010] Patent CN110878718B invented a knock method for natural gas engine, belonging to the field of engine knock control technology, mainly solving the technical problems of poor economy, poor power and safety of existing engine knock control. The method is: real-time acquisition of knock value of engine knock signal; according to the knock value, the push-reduction angle is queried; if the knock value reaches the calibrated knock limit value, the engine operation is controlled according to the push-reduction angle; if the push-reduction angle reaches the calibrated maximum threshold value, the engine operation is controlled according to the limit torque value. This patent uses the technical measure of push-reduction ignition angle to realize knock control, and the technical means is single, which sacrifices the thermal efficiency.

[0011] Patent CN103114951B invented a control method for optimal ignition advance angle of gasoline direct injection engine. After setting the basic ignition advance angle, logical operation is performed on the engine inlet and outlet water temperature, engine intake temperature, engine air-fuel ratio, automobile altitude temperature, exhaust gas recirculation rate, variable valve timing opening degree, injection mode and knock control, and then the basic ignition advance angle is calculated and corrected according to the influence of the eight factors. This patent uses control strategy to adjust the ignition advance angle to optimize and suppress knock and other abnormal combustion, and the technical means is single, which sacrifices the thermal efficiency of the engine.

[0012] Patent CN112145299B invented an engine anti-knock interference control method and storage medium. Real-time acquisition of knock intensity of engine combustion cylinder under current working condition; judge whether the knock intensity is greater than the set threshold value under the current working condition; when the knock intensity is greater than the set threshold value under the current working condition, update the center frequency, and the updated center frequency is the center frequency with the minimum frequency of knock intensity greater than the set threshold value; based on the updated center frequency, the knock control is carried out. It can reduce the influence of interference signal on knock judgment in knock control to the minimum, effectively prevent knock misjudgment and missed judgment, and avoid the interference of mechanical noise on knock detection and the measurement error of knock sensor installation position to each combustion cylinder. This patent is only a detection means for judging whether knock occurs, and does not provide suggestions on how to suppress or eliminate knock.

[0013] In summary, existing technologies primarily focus on exhaust gas recirculation (EGR), partial liquid water injection, and ignition timing adjustments. These technologies offer limited solutions to pre-ignition / knock problems, often at the expense of engine performance. Furthermore, while lean-burn techniques are commonly used to suppress pre-ignition / knock, they result in poor transient response. During acceleration, directly enriching the hydrogen without additional technical support leads back to the knock problem. Summary of the Invention

[0014] To address the shortcomings of existing technologies, the present invention aims to provide a hydrogen engine anti-knock water injection system and control method. By combining an injection system, a high-compression-ratio combustion chamber, and corresponding strategies, it can effectively improve power density and thermal efficiency across all operating conditions, while suppressing abnormal combustion problems such as pre-ignition / knock. Simultaneously, it improves transient response performance during acceleration while ensuring that pre-ignition / knock does not occur. To achieve the above-mentioned objectives and other advantages of the present invention, a control method for hydrogen engine anti-knock water injection is provided, comprising: The system is applied to the anti-knock water injection system for the hydrogen engine, which includes at least: A hydrogen engine, a water tank, an electric heater connected to the water tank, and a water spray nozzle connected to the water tank; The hydrogen engine includes a high compression ratio piston combustion chamber, which includes an intake pipe and an exhaust pipe, and the water spray nozzle is connected to the intake pipe. A method for suppressing knocking in a hydrogen engine using water injection includes the following steps: Obtain the operating load of the hydrogen engine; The control information for the water spray nozzles is determined based on the workload. The control information is used to adjust the water spray nozzle to spray liquid or gaseous water in order to reduce the cylinder temperature of the hydrogen engine and suppress pre-ignition or knocking.

[0015] Preferably, obtaining the working load of the hydrogen engine includes obtaining the low-to-medium load condition, high-load condition, and acceleration condition of the hydrogen engine, and determining the working load of the hydrogen engine based on the low-to-medium load condition, high-load condition, and acceleration condition.

[0016] Preferably, when the working load of the hydrogen engine is a low to medium load condition, the control information of the water spray nozzle is as follows: the electric heater works to heat the water output from the water tank to a gaseous state, and the gaseous water is sprayed into the intake pipe through the water spray nozzle, and then enters the hydrogen engine cylinder.

[0017] Preferably, when the working load of the hydrogen engine is under high load conditions, the control information of the water spray nozzle is as follows: the water tank outputs liquid water to the water spray nozzle, and the liquid water is sprayed into the intake pipe through the water spray nozzle, and then enters the cylinder of the hydrogen engine to vaporize and absorb heat, quickly controlling the excessively high cylinder temperature, thereby effectively suppressing abnormal combustion such as pre-ignition / knock.

[0018] Preferably, the working load of the hydrogen engine is obtained as the acceleration condition, and the control information of the water spray nozzle is as follows: the water tank outputs liquid water to the water spray nozzle, and the liquid water is sprayed into the intake pipe through the water spray nozzle, and then into the hydrogen engine cylinder to control the combustion temperature and reduce the risk of pre-ignition / knock.

[0019] Preferably, a device for a hydrogen engine anti-knock water spray system includes: The operating condition acquisition module is used to acquire the operating load of the hydrogen engine; A control information determination module is used to determine the control information of the water spray nozzle based on the workload. The gas-liquid adjustment module is used to adjust the water spray nozzle to spray liquid water or gaseous water according to the control information, so as to reduce the cylinder temperature of the hydrogen engine and suppress pre-ignition or knocking.

[0020] Preferably, an electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the hydrogen engine knock suppression system.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are: 1. In the low-to-medium load operating range, hydrogen engines use an electric heater to heat water to a gaseous state, which is then injected into the intake manifold through a spray nozzle. Driven by the air in the intake manifold, the water enters the cylinder, thereby reducing the cylinder temperature and lowering the risk of abnormal combustion problems such as pre-ignition / knocking. With the support of the cooling effect of the water vapor entering the cylinder, hydrogen engines can employ high compression ratio technology to improve engine thermal efficiency. 2. In the high-load operating range of hydrogen engines, the water injection nozzle sprays liquid water into the air passage, where it atomizes under the strong airflow disturbance. As the water enters the cylinder, it rapidly evaporates and absorbs heat, lowering the cylinder temperature and suppressing abnormal combustion problems such as pre-ignition / knock. Due to the strong cooling effect of the liquid water vaporization and heat absorption, high compression ratios and rich air-fuel mixtures can be used to achieve the engine's high power density and high thermal efficiency. 3. During acceleration, the hydrogen engine injects liquid water into the air intake manifold via water spray nozzles, which then enters the cylinder along with the air. The vaporization of the liquid water absorbs heat and provides significant cooling, allowing the engine to rapidly accelerate and enrich the air-fuel mixture, improving its transient response and meeting target requirements. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the hydrogen engine anti-knock water injection system and control method according to the present invention; Figure 2 This is a schematic diagram of the operating conditions of a hydrogen engine according to the present invention, which includes a hydrogen engine anti-knock water injection system and control method. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Reference Figure 1 By combining the injection system, high-compression combustion chamber, and corresponding strategies, it can effectively improve power density and thermal efficiency across the entire operating range while suppressing abnormal combustion problems such as pre-ignition / knock. Simultaneously, it improves transient response performance under acceleration conditions while ensuring that pre-ignition / knock does not occur. This is applied to the anti-knock water injection system of the hydrogen engine, which includes at least: The hydrogen engine 1 comprises a water tank 2, an electric heater 3 connected to the water tank 2, and a water spray nozzle 4 connected to the water tank 2. During engine operation, the engine control unit (ECU) identifies the engine's operating conditions. The hydrogen engine 1 includes a high-compression-ratio piston combustion chamber, which includes an intake pipe and an exhaust pipe. The water spray nozzle 4 is connected to the intake pipe. Figure 2 As shown, the engine operating conditions are divided into two operating zones according to the load level. Figure 2 As shown, when the hydrogen engine 1 is running in two operating zones, the water spray system operates as described below.

[0025] A method for suppressing knocking in a hydrogen engine using water injection includes the following steps: Obtain the working load of hydrogen engine 1; The control information for the water spray nozzle 4 is determined based on the working load. The control information is used to adjust the water spray nozzle 4 to spray liquid or gaseous water in order to reduce the cylinder temperature of the hydrogen engine and suppress pre-ignition or knocking.

[0026] Furthermore, obtaining the working load of the hydrogen engine 1 includes obtaining the low-to-medium load condition, high-load condition, and acceleration condition of the hydrogen engine 1, and determining the working load of the hydrogen engine 1 based on the low-to-medium load condition, high-load condition, and acceleration condition.

[0027] Furthermore, when the hydrogen engine 1 operates under low to medium load conditions, the electric heater 3 starts working, heating the water pumped by the water pump to a gaseous state, which is then sprayed into the intake manifold through the water spray nozzle. Driven by the air in the intake manifold, the water enters the cylinder. Under low to medium load conditions, the airflow energy in the intake manifold is low, insufficient to quickly agitate the injected liquid water. As a result, the liquid water condenses and accumulates in the intake manifold and at the valves, flowing directly into the cylinder and causing oil emulsification. This not only fails to reduce cylinder temperature and suppress pre-ignition / knock combustion problems, but also leads to reduced reliability due to oil emulsification. Therefore, when the hydrogen engine 1 operates under low to medium load conditions, the control information for the water spray nozzle 4 is as follows: the electric heater 3 operates, heating the water output from the water tank 2 to a gaseous state, which is then sprayed into the intake manifold through the water spray nozzle 4, and subsequently into the cylinder of the hydrogen engine 1. With the assistance of the large specific heat capacity of water vapor in cylinder 1 of the hydrogen engine, the cylinder temperature can be effectively controlled within a reasonable range. Combined with the high compression ratio combustion chamber, it can effectively suppress the problems of pre-ignition / knock abnormal combustion while ensuring thermal efficiency.

[0028] Furthermore, when the hydrogen engine 1 operates under high load conditions, the excess air coefficient of the in-cylinder mixture needs to be reduced to meet the engine's power requirements. However, in this operating range, multiple factors such as high compression ratio, rich mixture, and high combustion temperature increase the risk of pre-ignition / knock and other abnormal combustion problems. Therefore, under high load conditions, a water injection system is required to inject liquid water into the intake manifold. Assuming the hydrogen engine 1 operates under high load conditions, the control information for the water injection nozzle 4 is as follows: the water tank 2 outputs liquid water to the water injection nozzle 4, which then injects the liquid water into the intake manifold, where it enters the cylinder of the hydrogen engine 1, vaporizes, and absorbs heat, quickly controlling the excessively high cylinder temperature, thereby effectively suppressing abnormal combustion such as pre-ignition / knock. The injected liquid water, driven by the strong airflow in the intake manifold, enters the cylinder, vaporizes, and absorbs heat, quickly controlling the excessively high cylinder temperature, thus effectively suppressing abnormal combustion such as pre-ignition / knock. With the help of water injection to suppress pre-ignition / knock abnormal combustion, the hydrogen engine 1 can use a high compression ratio combustion chamber and a rich mixture to meet the required power and improve the engine's power density.

[0029] Furthermore, the mainstream technology for hydrogen engines is lean combustion. Under stable combustion conditions, a lambda of 2.5 or higher is generally required to effectively suppress pre-ignition / knock and other abnormal combustion problems. However, lean combustion leads to poor engine power performance and slow transient response. To address this, hydrogen engines need to enrich the mixture during acceleration to reduce the lambda to below 1.5. The enriched mixture introduces the risk of pre-ignition / knock, necessitating the injection of liquid water to control combustion temperature and reduce this risk. Assuming the hydrogen engine's operating load is under acceleration conditions, the control information for the water spray nozzle 4 is as follows: the water tank 2 outputs liquid water to the water spray nozzle 4, which then sprays the liquid water into the intake manifold and subsequently into the cylinder of the hydrogen engine to control combustion temperature and reduce the risk of pre-ignition / knock.

[0030] Furthermore, a device for a hydrogen engine anti-knock water spray system includes: The operating condition acquisition module is used to acquire the operating load of hydrogen engine 1. A control information determination module is used to determine the control information of the water spray nozzle 4 based on the working load. The gas-liquid adjustment module is used to adjust the water spray nozzle 4 to spray liquid water or gaseous water according to the control information, so as to reduce the cylinder temperature of the hydrogen engine and suppress pre-ignition or knocking.

[0031] In summary, the advantages of the invention compared to the prior art are as follows: 1. In the low-to-medium load operating range, the hydrogen engine 1 uses an electric heater to heat water to a gaseous state, which is then sprayed into the intake manifold through a water spray nozzle. Driven by the air in the intake manifold, the water enters the cylinder, thereby reducing the cylinder temperature and thus lowering the risk of abnormal combustion problems such as pre-ignition / knock. With the support of water vapor cooling inside the cylinder, the hydrogen engine can employ high compression ratio technology to improve engine thermal efficiency. 2. In the high-load operating range of the hydrogen engine 1, the water injection nozzle injects liquid water into the air passage, where it atomizes under the strong airflow disturbance. As the water enters the cylinder, it rapidly evaporates and absorbs heat, reducing the cylinder temperature and suppressing abnormal combustion problems such as pre-ignition / knock. Due to the strong cooling effect of the liquid water vaporization and heat absorption, high compression ratios and rich air-fuel mixtures can be used to achieve the engine's high power density and high thermal efficiency. 3. During acceleration, the hydrogen engine 1 uses water injection nozzles to spray liquid water into the air passages, which then enters the cylinder along with the air. The vaporization of the liquid water absorbs heat and strongly cools the engine, allowing it to rapidly accelerate and enrich the air-fuel mixture, improving transient response and meeting target requirements.

[0032] Furthermore, electronic devices are intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0033] Furthermore, an electronic device includes: at least one processor; and a memory, such as a read-only memory (ROM) or a random access memory (RAM), communicatively connected to the at least one processor. The memory stores a computer program executable by the at least one processor, which can perform various appropriate actions and processes based on the computer program stored in the ROM or loaded from a storage unit into the RAM. The RAM may also store various programs and data required for the operation of the electronic device; wherein the memory stores a computer program executable by the at least one processor, which is executed by the at least one processor to enable the at least one processor to execute the control method of the hydrogen engine knock suppression system.

[0034] Furthermore, the processor, read-only memory (ROM), and random access memory (RAM) are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus. Multiple components in the electronic device are connected to the I / O interfaces, including: input units such as a keyboard, mouse, etc.; output units such as various types of displays, speakers, etc.; storage units such as disks, optical discs, etc.; and communication units such as network interface cards, modems, wireless transceivers, etc. The communication units allow the electronic device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks. Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor executes the various methods and processes described above, such as the control method for a hydrogen engine's anti-knock and thermal efficiency water spray system. In some embodiments, the control method for a hydrogen engine anti-knock and thermal efficiency improvement water injection system can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed on an electronic device via a read-only memory (ROM) and / or a communication unit. When the computer program is loaded into random access memory (RAM) and executed by a processor, one or more steps of the control method for a hydrogen engine anti-knock and thermal efficiency improvement water injection system described above can be performed. Alternatively, in other embodiments, the processor can be configured to perform the control method for a hydrogen engine anti-knock and thermal efficiency improvement water injection system by any other suitable means (e.g., by means of firmware).

[0035] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0036] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0037] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0038] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0039] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0040] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0041] The number of devices and processing scale described herein are for simplification of the invention. Applications, modifications, and variations of this invention will be readily apparent to those skilled in the art. Although embodiments of the invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this invention, and further modifications can be readily implemented by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, this invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A control method for suppressing detonation water injection in a hydrogen engine, characterized in that, include: The system is applied to the anti-knock water injection system for the hydrogen engine, which includes at least: Hydrogen engine (1), water tank (2), electric heater (3) connected to the water tank (2), and water spray nozzle (4) connected to the water tank (2); The hydrogen engine (1) includes a high compression ratio piston combustion chamber, which includes an intake pipe and an exhaust pipe, and the water spray nozzle (4) is connected to the intake pipe. A method for suppressing knocking in a hydrogen engine using water injection includes the following steps: Obtain the working load of the hydrogen engine (1); The control information for the water spray nozzle (4) is determined based on the working load. According to the control information, the water spray nozzle (4) is adjusted to spray liquid water or gaseous water to reduce the cylinder temperature of the hydrogen engine and suppress pre-ignition or knocking.

2. The control method for suppressing detonation water injection in a hydrogen engine as described in claim 1, characterized in that, The working load of the hydrogen engine (1) is obtained by obtaining the low-to-medium load condition, high-load condition and acceleration condition of the hydrogen engine (1), and the working load of the hydrogen engine (1) is determined based on the low-to-medium load condition, high-load condition and acceleration condition.

3. The control method for suppressing detonation water injection in a hydrogen engine as described in claim 2, characterized in that, When the working load of the hydrogen engine (1) is small to medium load, the control information of the water spray nozzle (4) is: the electric heater (3) works to heat the water output from the water tank (2) to a gaseous state, and sprays the gaseous water into the intake pipe through the water spray nozzle (4), and then into the cylinder of the hydrogen engine (1).

4. The control method for suppressing detonation water injection in a hydrogen engine as described in claim 2, characterized in that, The working load of the hydrogen engine (1) is a high load condition. The control information of the water spray nozzle (4) is: the water tank (2) outputs liquid water to the water spray nozzle (4), and the liquid water is sprayed into the intake pipe through the water spray nozzle (4), and then enters the cylinder of the hydrogen engine (1) to vaporize and absorb heat, quickly control the cylinder temperature to prevent it from getting too high, thereby effectively suppressing abnormal combustion such as pre-ignition / knock.

5. The control method for suppressing detonation water injection in a hydrogen engine as described in claim 2, characterized in that, The working load of the hydrogen engine (1) is in acceleration condition. The control information of the water spray nozzle (4) is: the water tank (2) outputs liquid water to the water spray nozzle (4), and the liquid water is sprayed into the intake pipe through the water spray nozzle (4) and then into the cylinder of the hydrogen engine (1) to control the combustion temperature and reduce the risk of pre-ignition / knock.

6. A device for a hydrogen engine anti-knock water injection system, characterized in that, The control method for suppressing detonation water injection in a hydrogen engine, as described in any one of claims 1-5, comprises: The working condition acquisition module is used to acquire the working load of the hydrogen engine (1); The control information determination module is used to determine the control information of the water spray nozzle (4) based on the working load; The gas-liquid adjustment module is used to adjust the water spray nozzle (4) to spray liquid water or gaseous water according to the control information, so as to reduce the cylinder temperature of the hydrogen engine and suppress pre-ignition or knocking.

7. An electronic device, characterized in that, The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the control method of the hydrogen engine knock suppression system according to any one of claims 1-5.

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