Hydrogen internal combustion engine with regulated intake air flow

Abstract

The application discloses a hydrogen internal combustion engine with adjustable air flow of intake air, and relates to the technical field of hydrogen engines. The hydrogen internal combustion engine comprises a main air inlet device, an auxiliary air inlet device, an internal combustion engine body, a valve device, a piston movement device and an exhaust device. When the hydrogen internal combustion engine works, the main air inlet device and the auxiliary air inlet device are connected with an external mixed hydrogen tank. The main air inlet device and the auxiliary air inlet device can work independently or be used in cooperation with each other, so as to control the air flow of intake air of mixed gas. After the mixed gas enters the internal combustion engine body through the main air inlet device and the auxiliary air inlet device, the mixed gas starts to perform a stroke movement under the cooperation of the piston movement device and the valve device. The exhaust gas generated after work combustion is discharged through the exhaust device. The air flow of the mixed gas is adjusted through the main air inlet device and the auxiliary air inlet device. The application has the effect of adjusting the air flow of intake air.

Description

Technical Field

[0001] This invention relates to the field of hydrogen engine technology, specifically a hydrogen internal combustion engine with adjustable intake airflow. Background Technology

[0002] With the escalating global energy crisis and rising environmental protection demands, traditional fossil fuel internal combustion engines face severe challenges in energy conservation and emission reduction. Hydrogen energy, as a clean, efficient, and renewable new energy source, has become one of the core directions for replacing fossil fuels, giving rise to the hydrogen internal combustion engine. The combustion product of hydrogen is only water, with no carbon emissions or pollutant generation, aligning with carbon neutrality goals and environmental requirements. Compared to hydrogen fuel cells, hydrogen internal combustion engines can be built upon existing internal combustion engine structures, offering advantages such as lower manufacturing costs, higher technological maturity, and compatibility with existing industrial systems, thus lowering the barriers to application and promotion.

[0003] The physical properties of hydrogen present unique challenges to the operation of internal combustion engines. Hydrogen has a wide combustible range and a fast combustion speed. If the intake airflow cannot be precisely controlled, problems such as pre-ignition and knocking can easily occur, leading to unstable engine power output and reduced thermal efficiency. Simultaneously, the hydrogen-air mixture ratio directly affects combustion completeness. Improper airflow adjustment can result in hydrogen energy waste or uneven mixing leading to incomplete combustion in certain areas, affecting engine power performance and lifespan. Furthermore, the engine's intake airflow requirements vary significantly under different operating conditions, such as idling, acceleration, and high load. The lack of an efficient adjustment mechanism makes it difficult for hydrogen internal combustion engines to adapt to complex operating scenarios, limiting their large-scale application in transportation, construction machinery, and other fields. Summary of the Invention

[0004] The purpose of this invention is to provide a hydrogen internal combustion engine with adjustable intake airflow to solve the problems mentioned in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydrogen internal combustion engine with adjustable intake airflow, the hydrogen internal combustion engine comprising an internal combustion engine body and a main intake device, the main intake device being connected to the internal combustion engine body;

[0006] The main intake device includes an airbag element, a pressure regulating element, and a main intake pipeline. The airbag element is slidably connected to the main intake pipeline, the pressure regulating element is connected to the main intake pipeline, and the main intake pipeline is connected to the internal combustion engine body. Before the hydrogen internal combustion engine starts, a mixture of hydrogen and air enters the interior of the internal combustion engine body through the main intake device and the auxiliary intake device. The pressure regulating element can adjust the air pressure inside the main intake pipeline, allowing the airbag element to move within the main intake pipeline. The airbag in the airbag element can change its size by inflating and deflating. When fully inflated, the airbag can block the intake passage of the air-fuel mixture in the main intake pipeline, thereby regulating the intake airflow. The air-fuel mixture burns and performs work in the internal combustion engine body. After the power stroke, clean exhaust gas is discharged. The main intake device can work independently or in conjunction with other airflow regulating devices.

[0007] The airbag component includes an air intake pipe, a movable plate, and an airbag. The air intake pipe is connected to the movable plate and passes through the main air intake pipe. The airbag is mounted on the movable plate, which is slidably connected to the main air intake pipe. The air intake pipe is connected to an air pump. The movable plate moves inside the main air intake pipe, and the airbag moves synchronously with the movable plate. The air intake pipe inflates and deflates the airbag to change its size. The more gas inside the airbag, the larger the space it occupies in the main air intake pipe. When fully inflated, the airbag can completely block the air-mixed mixture entering the main air intake pipe, thereby regulating the intake airflow.

[0008] The main intake pipeline includes an airbag pipeline and a main body pipeline. The airbag pipeline is connected to the main body pipeline. The intake pipe passes through the airbag pipeline. The airbag pipeline is slidably connected to a movable plate. The main body pipeline is connected to the main body of the internal combustion engine. The air pressure regulating element is connected to the airbag pipeline. The air inlet of the main body pipeline is connected to a mixture tank. A mixture of hydrogen and air enters from the air inlet of the main body pipeline. The components inside the airbag pipeline can adjust the intake air flow rate.

[0009] The air pressure regulating element includes an air intake regulating pipe one, an electronic valve, an air intake regulating pipe two, and an air pressure pipe. One end of the air intake regulating pipe one is connected to the airbag pipe, and the other end of the air intake regulating pipe one is connected to the electronic valve. The electronic valve is connected to the air intake regulating pipe two, and the air intake regulating pipe two is connected to the air pressure pipe. The air pressure pipe is connected to an external air pump. The air intake volume is controlled by the electronic valve, thereby regulating the air pressure inside the airbag pipe. After continuous airflow, the air pressure inside the airbag pipe increases, and the high-pressure gas pushes the moving plate to move inside the airbag pipe. The airbag moves synchronously with the moving plate.

[0010] An auxiliary air intake device is provided on the main body of the internal combustion engine. The auxiliary air intake device includes a flow regulating element and an auxiliary air intake pipeline. The flow regulating element is disposed inside the auxiliary air intake pipeline. The auxiliary air intake pipeline is connected to the main body of the internal combustion engine. The flow regulating element of the auxiliary air intake device can adjust the flow rate of the air-fuel mixture in the auxiliary air intake pipeline. The auxiliary air intake device can work independently or in conjunction with the main air intake device.

[0011] The flow regulating element includes a hydraulic cylinder and a blocking element. The hydraulic cylinder is installed inside the auxiliary intake pipe, and the blocking element is installed through the auxiliary intake pipe. The blocking element is located at the output end of the hydraulic cylinder. The hydraulic cylinder is connected to the control system. The hydraulic cylinder is driven to extend outward, causing the blocking element to move upward. As the blocking element gets closer and closer to the vent, it eventually completely blocks the vent. At this point, the air-fuel mixture cannot enter the internal combustion engine. The air flow rate of the air-fuel mixture can be adjusted by adjusting the size of the blockage of the vent.

[0012] The auxiliary intake pipeline includes an auxiliary pipe, a lower pipe shell, and a vent hole. The auxiliary pipe is connected to the main body of the internal combustion engine. The hydraulic cylinder is located inside the lower pipe shell. The blocking element penetrates the auxiliary pipe. The vent hole is located on the auxiliary pipe. The intake port of the auxiliary pipe is connected to a mixed gas tank. A mixture of hydrogen and air enters from the intake port of the auxiliary pipe.

[0013] The internal combustion engine body is equipped with an exhaust device, which includes an exhaust branch pipe, an exhaust box, a straight pipe, an elbow pipe, and an exhaust fan. The exhaust branch pipe is connected to the internal combustion engine body, the exhaust box is connected to the exhaust branch pipe, the straight pipe is connected to the exhaust box, the straight pipe is connected to the elbow pipe, and the exhaust fan is connected to the elbow pipe. The exhaust branch pipe collects the exhaust gas generated by each cylinder into the exhaust box, which is then combined into a single path. The exhaust fan discharges the exhaust gas. The high-temperature exhaust gas passes through the straight pipe and the elbow pipe and is finally discharged from the exhaust fan outlet.

[0014] The internal combustion engine body is equipped with a valve assembly, which includes a camshaft, a spring, an intake valve, an exhaust valve, and a retaining block. The retaining block is mounted on the internal combustion engine body, and the camshaft is rotatably mounted on the retaining block. Both the intake and exhaust valves are located inside the internal combustion engine body. An end cover is provided on the internal combustion engine body, which covers the valve assembly. The camshaft is connected to the crankshaft via a belt. The intake valve introduces the air-fuel mixture, and the exhaust valve discharges exhaust gases. When the valves are closed, the spring presses the valves against the valve seats to form a seal. When the camshaft rotates, the cam on the camshaft rotates and pushes the relevant components to open the intake and exhaust valves. The end cover seals the valve assembly.

[0015] The internal combustion engine body is equipped with a piston movement device, which includes a crankshaft, a piston, and a connecting rod. The connecting rod is rotatably mounted on the crankshaft, and the piston is mounted on the connecting rod. During intake, the piston moves downward in the cylinder, creating a vacuum. At the same time, the intake valve opens, allowing the air-fuel mixture to be drawn into the cylinder. Subsequently, the piston moves upward, and the air-fuel mixture is highly compressed. The spark plug ignites the air-fuel mixture, and the high-temperature, high-pressure gas expands rapidly, pushing the piston downward. After the piston reaches bottom dead center, the inertia of the crankshaft causes the piston to move upward again, and the exhaust valve opens, expelling the combusted exhaust gases.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By adjusting the intake air flow through the main intake device and the auxiliary intake device, the intake air flow and mixing ratio of hydrogen and air can be precisely controlled, which can realize the fine control of the combustion process, suppress pre-ignition and knocking, and improve the stability of engine operation.

[0018] 2. The main intake device and the auxiliary intake device can be used independently or in combination. If one of them is damaged or needs repair, it will not affect the working requirements of the hydrogen internal combustion engine, thus increasing the stability of operation and ensuring sustainable operation.

[0019] 3. This hydrogen internal combustion engine can adapt to different operating conditions by adjusting the gas flow rate, enabling it to maintain high combustion efficiency across the entire operating range, balancing power output and energy consumption control. It has a wide range of applications, further expanding its usage scenarios. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the present invention;

[0021] Figure 2 This is a structural diagram of the main air intake device of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified view of a portion of region B in the middle;

[0023] Figure 4 This is a cross-sectional view of the main air intake device of the present invention;

[0024] Figure 5 This is a cross-sectional view of the auxiliary air intake device of the present invention;

[0025] Figure 6 This is a structural diagram of the exhaust device of the present invention;

[0026] Figure 7 This is a structural diagram of the valve device of the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified view of a portion of region A in the middle;

[0028] Figure 9 This is a structural diagram of the piston motion device of the present invention;

[0029] Figure 10 This is a cross-sectional view of the overall structure of the present invention.

[0030] In the diagram: 1. Internal combustion engine body; 2. Main intake device; 21. Airbag element; 211. Intake pipe; 212. Moving plate; 213. Airbag; 22. Air pressure regulating element; 221. Intake regulating pipe one; 222. Electronic valve; 223. Intake regulating pipe two; 224. Air pressure pipe; 23. Main intake pipeline; 231. Airbag pipeline; 232. Main pipeline; 3. Auxiliary intake device; 31. Flow regulating element; 311. Hydraulic cylinder; 312. Plug 32. Plug element; 321. Auxiliary intake pipe; 322. Lower pipe shell; 323. Vent hole; 4. Exhaust device; 41. Exhaust branch pipe; 42. Exhaust box; 43. Straight pipe; 44. Elbow pipe; 45. Exhaust fan; 5. Valve device; 51. Camshaft; 52. Spring; 53. Intake valve; 54. Exhaust valve; 55. Fixing block; 6. End cover; 7. Piston movement device; 71. Crankshaft; 72. Piston; 73. Connecting rod. Detailed Implementation

[0031] 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.

[0032] Example: Figures 1-10 As shown, the present invention provides a technical solution: a hydrogen internal combustion engine with adjustable intake airflow. The hydrogen internal combustion engine includes an internal combustion engine body 1 and a main intake device 2, the main intake device 2 being connected to the internal combustion engine body 1.

[0033] The main intake device 2 includes an airbag element 21, a pressure regulating element 22, and a main intake pipe 23. The airbag element 21 is slidably connected to the main intake pipe 23, the pressure regulating element 22 is connected to the main intake pipe 23, and the main intake pipe 23 is connected to the internal combustion engine body 1. Before the hydrogen internal combustion engine starts working, a mixture of hydrogen and air enters the interior of the internal combustion engine body 1 through the main intake device 2. The pressure regulating element 22 can regulate the air pressure inside the main intake pipe 23, allowing the airbag element 21 to move inside the main intake pipe 23. The airbag in the airbag element 21 can change its size by inflating and deflating. When fully inflated, the airbag can block the air-mixed mixture entering the main intake pipe 23, thereby regulating the intake airflow. The air-mixed mixture burns and does work inside the internal combustion engine body 1. After the power stroke, clean exhaust gas is discharged. The main intake device can work alone or in conjunction with other regulating devices.

[0034] The main intake pipe 23 includes an airbag pipe 231 and a main pipe 232. The airbag pipe 231 is connected to the main pipe 232. The intake pipe 211 passes through the airbag pipe 231. The airbag pipe 231 is slidably connected to the movable plate 212. The main pipe 232 is connected to the internal combustion engine body 1. The air pressure regulating element 22 is connected to the airbag pipe 231. The air inlet of the main pipe 232 is connected to the mixed gas tank. The mixture of hydrogen and air enters from the air inlet of the main pipe 232. The airbag element 21 inside the airbag pipe 231 can adjust the intake air flow rate.

[0035] The airbag element 21 includes an air intake pipe 211, a movable plate 212, and an airbag 213. The air intake pipe 211 is connected to the movable plate 212 and passes through the main air intake pipe 23. The airbag 213 is mounted on the movable plate 212 and is slidably connected to the main air intake pipe 23. The air intake pipe 211 is connected to an air pump. The movable plate 212 moves inside the main air intake pipe 23, and the airbag 213 moves synchronously with the movable plate 212. The air intake pipe 211 inflates and deflates the airbag 213 to change its size. The more gas inside the airbag 213, the larger the space it occupies in the main air intake pipe 23. When fully inflated, the airbag can completely block the air-mixed mixture entering the main air intake pipe 23, thereby regulating the intake airflow.

[0036] The air pressure regulating element 22 includes an air intake regulating pipe 221, an electronic valve 222, an air intake regulating pipe 223, and an air pressure pipe 224. One end of the air intake regulating pipe 221 is connected to the airbag pipe 231, and the other end of the air intake regulating pipe 221 is connected to the electronic valve 222. The electronic valve 222 is connected to the air intake regulating pipe 223, and the air intake regulating pipe 223 is connected to the air pressure pipe 224. The air pressure pipe 224 is connected to an external air pump. The air intake volume is controlled by the electronic valve 222, thereby regulating the air pressure inside the airbag pipe 231. After continuous airflow, the air pressure inside the airbag pipe 231 increases. The high-pressure gas pushes the moving plate 212 to move inside the airbag pipe 231, and the airbag 213 moves synchronously with the moving plate 212.

[0037] An auxiliary air intake device 3 is provided on the main body 1 of the internal combustion engine. The auxiliary air intake device 3 includes a flow regulating element 31 and an auxiliary air intake pipe 32. The flow regulating element 31 is installed inside the auxiliary air intake pipe 32. The auxiliary air intake pipe 32 is connected to the main body 1 of the internal combustion engine. When a small amount of mixed gas needs to enter the hydrogen internal combustion engine, the auxiliary air intake device 3 can work independently. The airflow can be precisely controlled through the auxiliary air intake device 3.

[0038] The auxiliary intake pipe 32 includes an auxiliary pipe 321, a lower pipe housing 322, and a vent 323. The auxiliary pipe 321 is connected to the main body 1 of the internal combustion engine. The hydraulic cylinder 311 is located inside the lower pipe housing 322. The blocking element 312 passes through the auxiliary pipe 321. The vent 323 is located on the auxiliary pipe 321. The intake port of the auxiliary pipe 321 is connected to the mixed gas tank. The mixture of hydrogen and air enters from the intake port of the auxiliary pipe 321.

[0039] The flow regulating element 31 includes a hydraulic cylinder 311 and a blocking element 312. The hydraulic cylinder 311 is installed inside the auxiliary intake pipe 32, and the blocking element 312 is installed through the auxiliary intake pipe 32. The blocking element 312 is located at the output end of the hydraulic cylinder 311. The hydraulic cylinder 311 is connected to the control system. The hydraulic cylinder 311 is driven to extend outward, causing the blocking element 312 to move upward. As the blocking element 312 gets closer and closer to the vent 323, it eventually completely blocks the vent 323. At this time, the air-fuel mixture cannot enter the internal combustion engine. The air flow rate of the air-fuel mixture can be adjusted by adjusting the size of the blockage of the vent 323.

[0040] The internal combustion engine body 1 is equipped with a piston movement device 7, which includes a crankshaft 71, a piston 72, and a connecting rod 73. The connecting rod 73 is rotatably mounted on the crankshaft 71, and the piston 72 is mounted on the connecting rod 73. During intake, the piston 72 moves downward in the cylinder, creating a vacuum. At the same time, the intake valve 53 opens, allowing the air-fuel mixture to be drawn into the cylinder. Subsequently, the piston 72 moves upward, and the air-fuel mixture is highly compressed. The spark plug ignites the air-fuel mixture, and the high-temperature, high-pressure gas expands rapidly, pushing the piston 72 downward. After the piston 72 reaches the bottom dead center, the inertia of the crankshaft 71 drives the piston 72 to move upward again, and the exhaust valve 54 opens, expelling the exhaust gas after combustion.

[0041] The internal combustion engine body 1 is equipped with a valve device 5, which includes a camshaft 51, a spring 52, an intake valve 53, an exhaust valve 54, and a fixing block 55. The fixing block 55 is mounted on the internal combustion engine body 1, and the camshaft 51 is rotatably mounted on the fixing block 55. The intake valve 53 and the exhaust valve 54 are both located inside the internal combustion engine body 1. An end cover 6 is mounted on the internal combustion engine body 1 and covers the valve device 5. The camshaft 51 is connected to the crankshaft 71 via a belt. The intake valve 53 introduces the air-fuel mixture, and the exhaust valve 54 discharges the exhaust gas. When the valve is closed, the spring 52 presses the valve against the valve seat to form a seal. When the camshaft 51 rotates, the cam on the camshaft 51 rotates and pushes the relevant components to open the intake valve 53 and the exhaust valve 54. The end cover 6 seals the valve device 5.

[0042] An exhaust device 4 is provided on the main body 1 of the internal combustion engine. The exhaust device 4 includes an exhaust branch pipe 41, an exhaust box 42, a straight pipe 43, an elbow pipe 44, and an exhaust fan 45. The exhaust branch pipe 41 is connected to the main body 1 of the internal combustion engine, the exhaust box 42 is connected to the exhaust branch pipe 41, the straight pipe 43 is connected to the exhaust box 42, the straight pipe 43 is connected to the elbow pipe 44, and the exhaust fan 45 is connected to the elbow pipe 44. The exhaust branch pipe 41 collects the exhaust gas generated by each cylinder into the exhaust box 42 and converges it into a single path. The exhaust fan 45 runs and discharges the exhaust gas. The high-temperature exhaust gas passes through the straight pipe 43 and the elbow pipe 44 and is finally discharged from the outlet of the exhaust fan 45.

[0043] Working principle of the invention:

[0044] When the hydrogen internal combustion engine is working, the air inlet of the main pipe 232 is connected to the gas mixture tank. By manually opening the exhaust valve of the gas mixture tank, the mixture of hydrogen and air enters from the air inlet of the main pipe 232.

[0045] The air pressure pipe 224 is connected to an external air pump, and the air intake is controlled by the electronic valve 222, thereby adjusting the air pressure inside the airbag pipe 231. After continuous airflow, the air pressure inside the airbag pipe 231 increases, and the high-pressure gas pushes the moving plate 212 to move inside the airbag pipe 231, and the airbag 213 moves synchronously with the moving plate 212.

[0046] The movable plate 212 moves inside the main intake pipe 23, and the airbag 213 moves synchronously with the movable plate 212. The intake pipe 211 inflates and deflates the airbag 213 to change its size. The more gas inside the airbag 213, the larger the space it occupies in the main intake pipe 23. The fully inflated airbag can completely block the air-mixed mixture entering the main intake pipe 23, thereby regulating the intake airflow.

[0047] The air inlet of the auxiliary pipe 321 is connected to the mixed gas tank, and the mixture of hydrogen and air enters from the air inlet of the auxiliary pipe 321.

[0048] The control system drives the hydraulic cylinder 311 to operate. The hydraulic cylinder 311 extends outward, causing the blocking element 312 to move upward. As the blocking element 312 gets closer and closer to the vent 323, it eventually completely blocks the vent 323. At this time, the air-fuel mixture cannot enter the internal combustion engine. The air flow rate of the air-fuel mixture can be adjusted by adjusting the size of the blockage of the vent 323.

[0049] During intake, piston 72 moves downward in the cylinder, creating a vacuum. At the same time, intake valve 53 opens, allowing the air-fuel mixture to be drawn into the cylinder. Then, piston 72 moves upward, and the air-fuel mixture is highly compressed. The spark plug ignites the air-fuel mixture, and the high-temperature, high-pressure gas expands rapidly, pushing piston 72 downward. After piston 72 reaches bottom dead center, the inertia of crankshaft 71 causes piston 72 to move upward again, and exhaust valve 54 opens, expelling the exhaust gas after combustion.

[0050] The camshaft 51 is connected to the crankshaft 71 via a belt. The intake valve 53 introduces the air-fuel mixture, and the exhaust valve 54 discharges the exhaust gas. When the valve is closed, the spring 52 presses the valve against the valve seat to form a sealed state. When the camshaft 51 rotates, the cam on the camshaft 51 will push the relevant components to open the intake valve 53 and the exhaust valve 54.

[0051] The exhaust branch pipe 41 collects the exhaust gas generated by each cylinder into the exhaust box 42, which is then combined into a single path. The exhaust fan 45 operates to discharge the exhaust gas. The high-temperature exhaust gas passes through the straight pipe 43 and the elbow pipe 44, and is finally discharged from the outlet of the exhaust fan 45.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hydrogen internal combustion engine with adjustable intake airflow, characterized in that: The hydrogen internal combustion engine includes an internal combustion engine body (1) and a main intake device (2), wherein the main intake device (2) is connected to the internal combustion engine body (1); The main intake device (2) includes an airbag element (21), a pressure regulating element (22) and a main intake pipe (23). The airbag element (21) is slidably connected to the main intake pipe (23), the pressure regulating element (22) is connected to the main intake pipe (23), and the main intake pipe (23) is connected to the main body of the internal combustion engine (1).

2. A hydrogen internal combustion engine with adjustable intake airflow according to claim 1, characterized in that: The airbag element (21) includes an air intake pipe (211), a movable plate (212) and an airbag (213). The air intake pipe (211) is connected to the movable plate (212), and the air intake pipe (211) passes through the main air intake pipe (23). The airbag (213) is mounted on the movable plate (212), and the movable plate (212) is slidably connected to the main air intake pipe (23).

3. A hydrogen internal combustion engine with adjustable intake airflow according to claim 2, characterized in that: The main intake pipe (23) includes an airbag pipe (231) and a main pipe (232). The airbag pipe (231) is connected to the main pipe (232). The intake pipe (211) passes through the airbag pipe (231). The airbag pipe (231) is slidably connected to the moving plate (212). The main pipe (232) is connected to the main body of the internal combustion engine (1). The air pressure regulating element (22) is connected to the airbag pipe (231).

4. A hydrogen internal combustion engine with adjustable intake airflow according to claim 3, characterized in that: The air pressure regulating element (22) includes an air intake regulating pipe one (221), an electronic valve (222), an air intake regulating pipe two (223), and an air pressure pipe (224). One end of the air intake regulating pipe one (221) is connected to the airbag pipe (231), and the other end of the air intake regulating pipe one (221) is connected to the electronic valve (222). The electronic valve (222) is connected to the air intake regulating pipe two (223), and the air intake regulating pipe two (223) is connected to the air pressure pipe (224).

5. A hydrogen internal combustion engine with adjustable intake airflow according to claim 1, characterized in that: An auxiliary air intake device (3) is provided on the main body (1) of the internal combustion engine. The auxiliary air intake device (3) includes a flow regulating element (31) and an auxiliary air intake pipe (32). The flow regulating element (31) is disposed inside the auxiliary air intake pipe (32), and the auxiliary air intake pipe (32) is connected to the main body (1) of the internal combustion engine.

6. A hydrogen internal combustion engine with adjustable intake airflow according to claim 5, characterized in that: The flow regulating element (31) includes a hydraulic cylinder (311) and a blocking element (312). The hydraulic cylinder (311) is disposed inside the auxiliary air intake pipe (32), and the blocking element (312) is disposed through the auxiliary air intake pipe (32). The blocking element (312) is disposed at the output end of the hydraulic cylinder (311).

7. A hydrogen internal combustion engine with adjustable intake airflow according to claim 6, characterized in that: The auxiliary intake pipe (32) includes an auxiliary pipe (321), a lower pipe shell (322), and a vent (323). The auxiliary pipe (321) is connected to the main body of the internal combustion engine (1). The hydraulic cylinder (311) is located inside the lower pipe shell (322). The blocking element (312) passes through the auxiliary pipe (321). The vent (323) is located on the auxiliary pipe (321).

8. A hydrogen internal combustion engine with adjustable intake airflow according to claim 1, characterized in that: An exhaust device (4) is provided on the main body (1) of the internal combustion engine. The exhaust device (4) includes an exhaust branch pipe (41), an exhaust box (42), a straight pipe (43), an elbow pipe (44), and an exhaust fan (45). The exhaust branch pipe (41) is connected to the main body (1) of the internal combustion engine. The exhaust box (42) is connected to the exhaust branch pipe (41). The straight pipe (43) is connected to the exhaust box (42). The straight pipe (43) is connected to the elbow pipe (44). The exhaust fan (45) is connected to the elbow pipe (44).

9. A hydrogen internal combustion engine with adjustable intake airflow according to claim 1, characterized in that: The internal combustion engine body (1) is provided with a valve device (5). The valve device (5) includes a camshaft (51), a spring (52), an intake valve (53), an exhaust valve (54), and a fixing block (55). The fixing block (55) is provided on the internal combustion engine body (1). The camshaft (51) is rotatably provided on the fixing block (55). The intake valve (53) and the exhaust valve (54) are both provided inside the internal combustion engine body (1). The internal combustion engine body (1) is provided with an end cover (6). The end cover (6) covers the valve device (5).

10. A hydrogen internal combustion engine with adjustable intake airflow according to claim 1, characterized in that: The internal combustion engine body (1) is provided with a piston movement device (7), which includes a crankshaft (71), a piston (72) and a connecting rod (73). The connecting rod (73) is rotatably mounted on the crankshaft (71), and the piston (72) is mounted on the connecting rod (73).

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