Control device and control method of injection system of hydrogen fuel internal combustion engine

Abstract

The invention discloses a control device of a hydrogen fuel internal combustion engine injection system and a control method thereof, and belongs to the technical field of hydrogen fuel internal combustion engines. The control device of the hydrogen fuel internal combustion engine injection system comprises an injection header pipe, and the rear end of one side of the injection header pipe is fixedly connected with a connecting pipe; a plurality of fixing seats are fixedly connected to the bottom of the spraying header pipe, and control mechanisms are installed in the multiple fixing seats; the bottoms of the multiple fixing bases are fixedly connected with first connecting bases, the bottom ends of the multiple first connecting bases are fixedly connected with second connecting bases, and the bottom ends of the multiple second connecting bases are fixedly provided with nozzles. By designing the control mechanism, the hydrogen fuel can be accurately controlled at the beginning, so that after a subsequent nozzle ejects the hydrogen fuel, excessive injection of the hydrogen fuel is prevented, accurate control is carried out at the beginning, waste of the hydrogen fuel is avoided, and meanwhile, the situation that normal operation of the internal combustion engine is affected by excessive injection of the hydrogen fuel is prevented.

Description

Technical Field

[0001] This invention belongs to the field of hydrogen fuel internal combustion engine technology, specifically relating to a control device and control method for a hydrogen fuel internal combustion engine injection system. Background Technology

[0002] The hydrogen fuel cell internal combustion engine injection system is a precision device used to accurately supply hydrogen fuel to the engine cylinders. As the core of the hydrogen internal combustion engine, its performance directly determines the engine's efficiency, power, and emissions levels. The system mainly consists of a high-pressure hydrogen storage tank, a fuel delivery unit, a common rail, and an electromagnetically controlled hydrogen injector. Its core task is to inject high-pressure gaseous hydrogen directly into the intake manifold or cylinder at a precise dosage and at the exact moment, according to the engine's different operating conditions. Compared to traditional fuel systems, it faces unique challenges such as the low density of hydrogen, its susceptibility to leakage, and its potential to cause abnormal combustion. Therefore, this system places extreme emphasis on precise injection control, ultra-high pressure sealing capabilities, and the hydrogen embrittlement resistance of materials. By achieving precise metering and flexible control of hydrogen, this system successfully supports the efficient and clean operation of the hydrogen internal combustion engine and is one of the key technologies for hydrogen energy to replace traditional fossil fuels.

[0003] The existing hydrogen fuel injection system of internal combustion engines has a relatively simple structural design. It usually has an electromagnetic coil installed in the nozzle, which controls the valve through magnetic force to control the amount of hydrogen fuel injected. However, after long-term use, the internal parts age and the spring force of the return spring weakens, causing the valve to be unable to remain in a sealed state for a long time. This affects the accurate injection of hydrogen fuel. At the same time, a small amount of hydrogen fuel leaks out during the valve closing process, causing hydrogen leakage and affecting the normal operation of the entire internal combustion engine system. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a control device and control method for a hydrogen fuel internal combustion engine injection system.

[0005] The technical solution adopted to solve the above technical problems is: a control device for a hydrogen fuel internal combustion engine injection system, including an injection manifold, a connecting pipe fixedly connected to the rear end of one side of the injection manifold, and multiple fixed seats fixedly connected to the bottom of the injection manifold, with a control mechanism installed inside each of the multiple fixed seats; Each of the plurality of fixed seats has a first connecting seat fixedly connected to its bottom, and each of the plurality of first connecting seats has a second connecting seat fixedly connected to its bottom end, and each of the plurality of second connecting seats has a nozzle fixedly installed at its bottom end. Valve assemblies are installed inside the first and second connecting seats, and electromagnetic coil assemblies are installed inside the second connecting seat.

[0006] Furthermore, the control mechanism includes a housing fixedly connected to the center of the outer wall of the fixed base, a fixed frame fixedly connected to the center of the inner wall of the fixed base, an annular guide rail fixedly connected to the outer wall of the fixed base, a ring frame slidably connected inside the annular guide rail, a gear ring fixedly connected to the top of the ring frame, multiple limiting pins fixedly connected to the outer wall of the ring frame, multiple sector plates rotatably connected to the bottom of the outer wall of the fixed frame, connecting rods fixedly connected to the outer ends of the multiple sector plates, connecting ears fixedly connected to the outer ends of the multiple connecting rods, and limiting grooves formed on the multiple connecting ears. A motor is fixedly installed at the center of the rear end of the housing, and a gear is fixedly connected to the outer wall of the motor output shaft.

[0007] The above technical solution precisely controls the injection volume of hydrogen fuel. The motor is started, and the output shaft rotates, driving the gears, which in turn rotate the gear ring, which in turn rotates the annular guide rail, which in turn rotates the ring frame. This causes multiple limit pins to rotate, sliding within their corresponding limit grooves. This causes the connecting ear to swing, which in turn drives the sector plates to rotate via the connecting rod. The larger the rotation amplitude, the greater the hydrogen fuel delivery volume. The number of rotations of the motor output shaft, i.e., the hydrogen fuel injection volume, is designed based on the required injection volume. Since most existing injection devices are controlled by valves, a small amount of hydrogen fuel leaks out during valve closure. By precisely controlling the hydrogen fuel from the very beginning through the control mechanism, excessive hydrogen fuel injection is prevented after the nozzles spray it. Precise control at the initial stage avoids waste of hydrogen fuel and prevents excessive hydrogen fuel injection from affecting the normal operation of the internal combustion engine.

[0008] Furthermore, in the combined state, multiple sector plates are spliced ​​together, multiple limiting pins pass through corresponding limiting grooves, and the gear meshes with the gear ring.

[0009] Through the above technical solution, the amount of hydrogen fuel input can be precisely controlled by the motor, and the motor has a self-locking effect, which can precisely control the opening range of multiple sector plates, thereby achieving precise control of the hydrogen fuel.

[0010] Furthermore, a filter cartridge is installed inside the first connecting seat.

[0011] With the above technical solution, when hydrogen fuel is injected, the prepared hydrogen fuel is transported to the injection manifold through the connecting pipe, and then to the corresponding first connecting seat through multiple fixed seats. It first passes through the filter cartridge, which intercepts solid particles in the hydrogen fuel, preventing solid particles from scratching the precision sealing surface of the injection system and greatly improving the service life of important parts.

[0012] Furthermore, the nozzle has a first nozzle at its inner bottom end, a nozzle head is threadedly connected to the bottom end of the outer wall of the nozzle, and a second nozzle at its inner end. In the combined state, the first nozzle and the second nozzle are fitted together, and a retaining ring is fixedly connected to the top end of the nozzle.

[0013] With the above technical solution, when the nozzle needs to be cleaned, since the nozzle and the nozzle are connected by threads, rotating the nozzle will disassemble it, enabling regular cleaning. This avoids the expensive cost of replacing the entire nozzle assembly due to a single nozzle failure, and also prevents a chain of failures caused by poor combustion.

[0014] Furthermore, the valve assembly includes a connecting cylinder fixedly connected to the bottom of the inner wall of the first connecting seat. The bottom of the inner wall of the connecting cylinder is provided with an inner groove. A return spring is fixedly connected in the inner groove. A valve seat is fixedly connected to the bottom of the return spring. A plurality of round holes are opened on the outer side of the top of the valve seat. A valve stem is fixedly connected to the center of the bottom of the valve seat.

[0015] With the above technical solution, when hydrogen fuel is injected, the valve seat presses upward against the return spring, causing the valve seat to separate from the retaining ring. At the same time, the valve stem moves upward and separates from the first nozzle. At this time, the hydrogen fuel on the top of the valve seat flows downward through multiple round holes, flows through the retaining ring to the first nozzle, and under pressure, is finally injected outward through the second nozzle.

[0016] Furthermore, the bottom of the valve seat fits against the top of the retaining ring, and the bottom end of the valve stem is located at the inner center of the first nozzle.

[0017] With the above technical solution, the valve stem can block the center of the first and second nozzles under normal conditions, and prevent hydrogen fuel from leaking out under the action of the return spring.

[0018] Furthermore, the electromagnetic coil assembly includes a magnetic core fixedly installed inside the center of the second connector, a coil is installed at the center of the outer wall of the magnetic core, and two wires are fixedly connected to the coil.

[0019] Through the above technical solution, the two wires receive electrical information to energize the coil, thereby generating a magnetic field around the magnetic core, which in turn magnetically attracts the valve seat, allowing the valve seat to be opened quickly and hydrogen fuel to be injected rapidly.

[0020] Furthermore, the outer wall of the connecting cylinder is fitted to the inner wall of the magnetic core, and the valve seat is located at the bottom of the inner part of the magnetic core.

[0021] The above technical solution, through the use of magnetic cores and coils, greatly improves control accuracy, reduces wear on equipment parts, and extends service life.

[0022] A control method for a control device of a hydrogen fuel internal combustion engine injection system includes the following specific steps: Step 1: When precisely controlling the injection amount of hydrogen fuel, start the motor. The output shaft rotates, which drives the gear to rotate, which in turn drives the gear ring to rotate, which in turn drives the ring guide rail to rotate, which in turn drives the ring frame to rotate, which in turn drives multiple limit pins to rotate. The limit pins slide in their corresponding limit grooves, which causes the connecting ear to swing. This causes the sector plate to rotate through the connecting rod, so that multiple sector plates rotate simultaneously. The greater the rotation amplitude, the greater the amount of hydrogen fuel delivered. The number of rotations of the motor output shaft is designed according to the required injection amount, thereby adjusting the injection amount of hydrogen fuel. Step 2: After adjusting the control mechanism, when injecting hydrogen fuel, the prepared hydrogen fuel is transported to the injection manifold through the connecting pipe, and then to the corresponding first connecting seat through multiple fixed seats. First, it passes through the filter cartridge, which intercepts solid particles in the hydrogen fuel to prevent solid particles from scratching the precision sealing surface of the injection system. Step 3: The filtered hydrogen fuel flows into the top of the valve seat through the connecting tube and accumulates there. At the same time, the two wires receive electrical information and energize the coil, which generates a magnetic field around the magnetic core, thereby magnetically attracting the valve seat. This causes the valve seat to press upward against the return spring, separating the valve seat from the retaining ring. Simultaneously, the valve stem moves upward and separates from the first nozzle. At this time, the hydrogen fuel on the top of the valve seat flows downward through multiple round holes, passes through the retaining ring, and flows towards the first nozzle. Under pressure, it is finally injected outward through the second nozzle. Step 4: When the nozzle needs cleaning, since the nozzle and the spray head are connected by threads, you can rotate the nozzle to disassemble it and achieve regular cleaning.

[0023] The beneficial effects of the present invention are as follows: (1) The present invention can precisely control the hydrogen fuel at the beginning by designing a control mechanism, so that after the subsequent nozzle sprays the hydrogen fuel, it can prevent the excessive injection of hydrogen fuel. Precise control is implemented at the beginning stage, thereby avoiding the waste of hydrogen fuel and preventing excessive hydrogen fuel injection from affecting the normal operation of the internal combustion engine; (2) The present invention can intercept solid particles in the hydrogen fuel by designing a filter cartridge and a nozzle, thereby preventing solid particles from scratching the precision sealing surface of the injection system, greatly improving the service life of important parts. At the same time, the nozzle can be quickly disassembled by rotating the nozzle later, thereby achieving regular cleaning, thus avoiding the expensive cost of replacing the entire nozzle assembly due to the failure of a single nozzle, and also preventing chain failures caused by poor combustion. Attached Figure Description

[0024] Figure 1 This is an overall appearance drawing of the present invention; Figure 2 This is the overall front view of the present invention; Figure 3This is an overall sectional view of the present invention; Figure 4 This is an overall side view of the present invention; Figure 5 This is a schematic diagram of the control mechanism structure of the present invention; Figure 6 This is a schematic diagram of the structure of some parts of the control mechanism of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the structure of some parts of the control mechanism of the present invention. Figure 2 ; Figure 8 This is a cross-sectional view of the valve assembly of the present invention; Figure 9 These are exploded views of some parts of the present invention; Figure 10 for Figure 3 A magnified view of a section at point A in the middle; Figure 11 for Figure 10 A magnified view of a section at point B.

[0025] Reference numerals: 1. Main injection pipe; 2. Connecting pipe; 3. Fixing seat; 4. Control mechanism; 401. Housing; 402. Fixing frame; 403. Annular guide rail; 404. Ring frame; 405. Gear ring; 406. Limiting pin; 407. Sector plate; 408. Connecting rod; 409. Connecting ear; 410. Limiting groove; 411. Motor; 412. Gear; 5. First connecting seat; 51. Filter cartridge; 6. Second connecting seat; 7. Nozzle; 71. First nozzle; 72. Nozzle head; 73. Second nozzle; 74. Retaining ring; 8. Valve assembly; 801. Connecting cylinder; 802. Inner groove; 803. Return spring; 804. Valve seat; 805. Circular hole; 806. Valve stem; 9. Electromagnetic coil assembly; 901. Magnetic core; 902. Coil; 903. Wire. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] like Figures 1-10As shown, a control device for a hydrogen fuel internal combustion engine injection system in this embodiment includes an injection manifold 1. A connecting pipe 2 is fixedly connected to the rear end of one side of the injection manifold 1. Multiple fixing seats 3 are fixedly connected to the bottom of the injection manifold 1. A control mechanism 4 is installed inside each of the multiple fixing seats 3. The control mechanism 4 includes a housing 401 fixedly connected to the center of the outer wall of the fixing seat 3. A fixing frame 402 is fixedly connected to the center of the inner wall of the fixing seat 3. An annular guide rail 403 is fixedly connected to the outer wall of the fixing seat 3. A ring frame 404 is slidably connected inside the annular guide rail 403. A toothed ring 405 is fixedly connected to the top of the ring frame 404. The outer wall of the ring frame 404... Multiple limit pins 406 are fixedly connected. Multiple sector plates 407 are rotatably connected to the bottom of the outer wall of the fixed frame 402. Connecting rods 408 are fixedly connected to the outer ends of the sector plates 407. Connecting ears 409 are fixedly connected to the outer ends of the connecting rods 408. Limit grooves 410 are provided on the connecting ears 409. A motor 411 is fixedly installed at the center of the rear end of the outer shell 401. A gear 412 is fixedly connected to the outer wall of the output shaft of the motor 411. When precisely controlling the injection amount of hydrogen fuel, the motor 411 is started, and the output shaft rotates to drive the gear 412 to rotate, thereby driving the gear ring 405 to rotate, thereby driving the annular guide. The track 403 rotates, thereby driving the ring frame 404 to rotate, which in turn drives multiple limit pins 406 to rotate, causing the limit pins 406 to slide within their corresponding limit grooves 410. This causes the connecting ear 409 to swing, which in turn drives the sector plate 407 to rotate via the connecting rod 408. The larger the rotation amplitude, the greater the hydrogen fuel delivery. Based on the required injection volume, the number of rotations of the motor 411 output shaft is designed, which determines the hydrogen fuel injection volume. Since most existing injection devices are controlled by valves, a small amount of hydrogen fuel leaks out during valve closure. The control mechanism 4 controls the leakage at the most open position... Precise control of hydrogen fuel is implemented from the outset, preventing excessive injection of hydrogen fuel after the subsequent nozzle 7 sprays it out. Precise control at the very beginning avoids waste of hydrogen fuel and prevents excessive hydrogen fuel injection from affecting the normal operation of the internal combustion engine. In the combined state, multiple sector plates 407 are spliced ​​together, and multiple limit pins 406 pass through the corresponding limit grooves 410. Gear 412 meshes with gear ring 405. The amount of hydrogen fuel input is precisely controlled by motor 411, which also has a self-locking effect, enabling precise control of the opening range of multiple sector plates 407, thus achieving precise control of hydrogen fuel.

[0028] like Figures 1-10As shown, the bottom of each of the multiple fixed seats 3 is fixedly connected to a first connecting seat 5. A filter cartridge 51 is installed inside the first connecting seat 5. When hydrogen fuel is injected, the prepared hydrogen fuel is transported to the injection main pipe 1 through the connecting pipe 2, and then transported to the corresponding first connecting seat 5 through the multiple fixed seats 3. It first passes through the filter cartridge 51, which intercepts solid particles in the hydrogen fuel, preventing solid particles from scratching the precision sealing surface of the injection system and greatly improving the service life of important parts.

[0029] like Figures 1-11 As shown, a second connecting seat 6 is fixedly connected to the bottom of a plurality of first connecting seats 5, and a nozzle 7 is fixedly installed at the bottom of a plurality of second connecting seats 6. A first nozzle 71 is provided at the bottom of the interior of the nozzle 7, and a nozzle head 72 is threadedly connected to the bottom of the outer wall of the nozzle 7. A second nozzle 73 is provided inside the nozzle head 72. In the combined state, the first nozzle 71 and the second nozzle 73 are in contact. A retaining ring 74 is fixedly connected to the top of the interior of the nozzle 7. When the nozzle head 72 needs to be cleaned, since the nozzle head 72 and the nozzle 7 are threadedly connected, the nozzle head 72 can be rotated to disassemble it, thereby achieving regular cleaning. This avoids the expensive cost of replacing the entire nozzle 7 assembly due to the failure of a single nozzle 7, and can also prevent chain failures caused by poor combustion.

[0030] like Figures 1-11 As shown, a valve assembly 8 is installed inside the first connecting seat 5 and the second connecting seat 6. The valve assembly 8 includes a connecting cylinder 801 fixedly connected to the bottom of the inner wall of the first connecting seat 5. The bottom of the inner wall of the connecting cylinder 801 is provided with an inner groove 802. A return spring 803 is fixedly connected inside the inner groove 802. A valve seat 804 is fixedly connected to the bottom end of the return spring 803. A plurality of round holes 805 are opened on the outer side of the top of the valve seat 804. A valve stem 806 is fixedly connected to the center of the bottom of the valve seat 804. When hydrogen fuel is injected, the valve seat 804 presses the return spring 803 upward, so that the valve seat 804 and the return spring 803 are fixedly connected. When the retaining ring 74 separates, it simultaneously moves the valve stem 806 upward and separates it from the first nozzle 71. At this time, the hydrogen fuel at the top of the valve seat 804 flows downward through multiple round holes 805, passes through the retaining ring 74, and flows to the first nozzle 71. Under pressure, it is finally injected outward through the second nozzle 73. The bottom of the valve seat 804 is in contact with the top of the retaining ring 74, and the bottom end of the valve stem 806 is located at the inner center of the first nozzle 71. Under normal conditions, the valve stem 806 can block the center of the first nozzle 71 and the second nozzle 73, and under the action of the return spring 803, prevent the hydrogen fuel from leaking outward.

[0031] like Figures 1-9As shown, an electromagnetic coil assembly 9 is installed inside the second connecting seat 6. The electromagnetic coil assembly 9 includes a magnetic core 901 fixedly installed in the center of the interior of the second connecting seat 6, and a coil 902 installed in the center of the outer wall of the magnetic core 901. Two wires 903 are fixedly connected to the coil 902. The two wires 903 receive electrical information and energize the coil 902, so that a magnetic field is generated around the magnetic core 901, thereby magnetically attracting the valve seat 804, which can quickly open the valve seat 804 and allow hydrogen fuel to be injected quickly. The outer wall of the connecting cylinder 801 is in contact with the inner wall of the magnetic core 901, and the valve seat 804 is located at the bottom of the interior of the magnetic core 901. Through the magnetic core 901 and the coil 902, the control accuracy is greatly improved, and the wear of equipment parts is reduced, thus increasing the service life.

[0032] A control method for a control device of a hydrogen fuel internal combustion engine injection system includes the following specific steps: Step 1: When precisely controlling the injection amount of hydrogen fuel, start the motor 411. The output shaft rotates, driving the gear 412 to rotate, which in turn drives the gear ring 405 to rotate, which in turn drives the annular guide rail 403 to rotate, which in turn drives the ring frame 404 to rotate, which in turn drives multiple limit pins 406 to rotate, causing the limit pins 406 to slide in the corresponding limit grooves 410, causing the connecting ear 409 to swing, which drives the sector plate 407 to rotate through the connecting rod 408, so that multiple sector plates 407 rotate simultaneously. The greater the amplitude of rotation, the greater the amount of hydrogen fuel delivered. According to the required injection amount, design the number of rotations of the output shaft of the motor 411, and then adjust the injection amount of hydrogen fuel. Step 2: After adjusting the control mechanism 4, when injecting hydrogen fuel, the prepared hydrogen fuel is transported to the injection main pipe 1 through the connecting pipe 2, and then to the corresponding first connecting seat 5 through multiple fixed seats 3. First, it passes through the filter cartridge 51, which intercepts solid particles in the hydrogen fuel to prevent solid particles from scratching the precision sealing surface of the injection system. Step 3: The filtered hydrogen fuel flows into the top of the valve seat 804 through the connecting tube 801 and accumulates there. At the same time, the two wires 903 receive electrical information and energize the coil 902, so that a magnetic field is generated around the magnetic core 901, which magnetically attracts the valve seat 804, causing the valve seat 804 to press the return spring 803 upward, so that the valve seat 804 separates from the retaining ring 74. At the same time, the valve stem 806 moves upward and separates from the first nozzle 71. At this time, the hydrogen fuel on the top of the valve seat 804 flows downward through multiple round holes 805, flows through the retaining ring 74 to the first nozzle 71, and under pressure, is finally injected outward through the second nozzle 73. Step 4: When it is necessary to clean the nozzle 72, since the nozzle 72 is connected to the nozzle 7 by threads, rotating the nozzle 72 will disassemble it and allow for regular cleaning.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A control device for a hydrogen fuel internal combustion engine injection system, comprising an injection manifold (1), characterized in that: A connecting pipe (2) is fixedly connected to the rear end of one side of the main injection pipe (1), and multiple fixing seats (3) are fixedly connected to the bottom of the main injection pipe (1). A control mechanism (4) is installed inside each of the multiple fixing seats (3). The bottom of each of the plurality of fixed seats (3) is fixedly connected to a first connecting seat (5), the bottom of each of the plurality of first connecting seats (5) is fixedly connected to a second connecting seat (6), and the bottom of each of the plurality of second connecting seats (6) is fixedly installed with a nozzle (7). A valve assembly (8) is installed inside the first connecting seat (5) and the second connecting seat (6), and an electromagnetic coil assembly (9) is installed inside the second connecting seat (6).

2. The control device for a hydrogen fuel internal combustion engine injection system according to claim 1, characterized in that, The control mechanism (4) includes a housing (401) fixedly connected to the center of the outer wall of the fixed base (3). A fixed frame (402) is fixedly connected to the center of the inner wall of the fixed base (3). An annular guide rail (403) is fixedly connected to the outer wall of the fixed base (3). A ring frame (404) is slidably connected inside the annular guide rail (403). A toothed ring (405) is fixedly connected to the top of the ring frame (404). A plurality of limiting pins (406) are fixedly connected to the outer wall of the ring frame (404). Multiple sector plates (407) are rotatably connected to the bottom of the outer wall of the fixed frame (402). A connecting rod (408) is fixedly connected to the outer end of each sector plate (407). A connecting ear (409) is fixedly connected to the outer end of each connecting rod (408). A limit groove (410) is opened on each connecting ear (409). A motor (411) is fixedly installed at the center of the rear end of the outer shell (401). A gear (412) is fixedly connected to the outer wall of the output shaft of the motor (411).

3. The control device for a hydrogen fuel internal combustion engine injection system according to claim 2, characterized in that, In the combined state, multiple sector plates (407) are spliced ​​together, multiple limiting pins (406) pass through the corresponding limiting grooves (410), and the gear (412) meshes with the gear ring (405).

4. The control device for a hydrogen fuel internal combustion engine injection system according to claim 1, characterized in that, A filter cartridge (51) is installed inside the first connecting seat (5).

5. The control device for a hydrogen fuel internal combustion engine injection system according to claim 1, characterized in that, The nozzle (7) has a first nozzle (71) at its inner bottom end, and a nozzle (72) is threadedly connected to the outer bottom end of the nozzle (7). The nozzle (72) has a second nozzle (73) inside. In the combined state, the first nozzle (71) and the second nozzle (73) are in contact, and a retaining ring (74) is fixedly connected to the inner top end of the nozzle (7).

6. The control device for a hydrogen fuel internal combustion engine injection system according to claim 5, characterized in that, The valve assembly (8) includes a connecting cylinder (801) fixedly connected to the bottom of the inner wall of the first connecting seat (5). The bottom of the inner wall of the connecting cylinder (801) is provided with an inner groove (802). A return spring (803) is fixedly connected in the inner groove (802). A valve seat (804) is fixedly connected to the bottom of the return spring (803). A plurality of round holes (805) are opened on the outer side of the top of the valve seat (804). A valve stem (806) is fixedly connected to the center of the bottom of the valve seat (804).

7. The control device for a hydrogen fuel internal combustion engine injection system according to claim 6, characterized in that, In the combined state, the bottom of the valve seat (804) is in contact with the top of the retaining ring (74), and the bottom end of the valve stem (806) is located at the inner center of the first nozzle (71).

8. The control device for a hydrogen fuel internal combustion engine injection system according to claim 6, characterized in that, The electromagnetic coil assembly (9) includes a magnetic core (901) fixedly installed in the center of the second connector (6), and a coil (902) is installed in the center of the outer wall of the magnetic core (901). Two wires (903) are fixedly connected to the coil (902).

9. The control device for a hydrogen fuel internal combustion engine injection system according to claim 8, characterized in that, The outer wall of the connecting cylinder (801) is in contact with the inner wall of the magnetic core (901), and the valve seat (804) is located at the bottom of the inner part of the magnetic core (901).

10. A control method for a control device based on any one of claims 1-9 of a hydrogen fuel internal combustion engine injection system, characterized in that, The specific steps include the following: Step 1: When precisely controlling the injection amount of hydrogen fuel, start the motor (411), and drive the gear (412) to rotate through the output shaft, thereby driving the gear ring (405) to rotate, thereby driving the ring guide rail (403) to rotate, thereby driving the ring frame (404) to rotate, thereby driving multiple limit pins (406) to rotate, so that the limit pins (406) slide in the corresponding limit grooves (410), driving the connecting ear (409) to swing, and driving the sector plate (407) to rotate through the connecting rod (408), so that multiple sector plates (407) rotate simultaneously. The greater the rotation amplitude, the greater the hydrogen fuel delivery amount. According to the required injection amount, design the number of rotations of the output shaft of the motor (411) to adjust the injection amount of hydrogen fuel. Step 2: After adjusting the control mechanism (4), when injecting hydrogen fuel, the prepared hydrogen fuel is transported to the injection main pipe (1) through the connecting pipe (2), and then transported to the corresponding first connecting seat (5) through multiple fixed seats (3). First, it passes through the filter cylinder (51), and the solid particles in the hydrogen fuel are intercepted by the filter cylinder (51) to prevent the solid particles from scratching the precision sealing surface of the injection system. Step 3: The filtered hydrogen fuel flows into the top of the valve seat (804) through the connecting tube (801) and accumulates there. At the same time, the two wires (903) receive electrical information and energize the coil (902), so that a magnetic field is generated around the magnetic core (901), which magnetically attracts the valve seat (804), causing the valve seat (804) to press the return spring (803) upward, so that the valve seat (804) separates from the retaining ring (74), and at the same time drives the valve stem (806) to move upward and separate from the first nozzle (71). At this time, the hydrogen fuel on the top of the valve seat (804) flows downward through multiple round holes (805), flows through the retaining ring (74) to the first nozzle (71), and under pressure, it is finally injected outward through the second nozzle (73). Step 4: When it is necessary to clean the nozzle (72), since the nozzle (72) and the nozzle (7) are connected by threads, rotating the nozzle (72) will disassemble it and allow for regular cleaning.

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