Hydrogen injector and combustion system for internal combustion engines

Abstract

The present application relates to the field of internal combustion engine, provide a kind of hydrogen injector and internal combustion engine combustion system, comprising: hydrogen injector main body is equipped with first hydrogen injection port;Lengthened nozzle is located in the one end of hydrogen injector main body close to first hydrogen injection port, lengthened nozzle extends along the hydrogen injector main body axial direction, and is equipped with second hydrogen injection port;Heat insulation pin is located in lengthened nozzle, and is located between first hydrogen injection port and second hydrogen injection port, heat insulation pin is equipped with through hole along its axial direction, through hole one end is communicated with first hydrogen injection port, other end is communicated with second hydrogen injection port.Such can be reformed on existing hydrogen injector, greatly reduce manufacturing and design cost.Meanwhile using lengthened nozzle, can make hydrogen injector main body injection port away from high temperature and high pressure area, effectively solve the heat load problem and installation problem of hydrogen injector, improve the service life of hydrogen injector, conducive to realizing the efficient and reliable, stable operation of engine.

Description

Technical Field

[0001] The present invention relates to the technical field of internal combustion engines, and in particular to a hydrogen injector and an internal combustion engine combustion system. Background Art

[0002] As a fuel for internal combustion engines, hydrogen offers a range of unique advantages, making it a potential alternative energy source for future clean energy vehicles. First, the primary product of hydrogen's complete combustion is water vapor, with no carbon dioxide or other greenhouse gases produced. This significantly reduces environmental impact and helps mitigate climate change. While hydrogen combustion may produce some nitrogen oxides (NOx), these emissions can be minimized through optimized engine design and the use of appropriate emission control technologies. Second, hydrogen has a very high mass energy density of approximately 120 to 142 MJ / kg, significantly higher than that of conventional gasoline and diesel. This means that hydrogen delivers more energy per kiloliter. Furthermore, hydrogen's rapid combustion allows it to burn over a wider range of air-fuel ratios, optimizing engine performance and improving fuel economy. Overall, hydrogen offers several advantages as a fuel for internal combustion engines, making it a suitable candidate for future clean energy solutions.

[0003] Direct hydrogen injection into the cylinder increases the intake volume during the intake process and improves the engine's charging efficiency. This prevents hydrogen injection from occupying the air volume in the intake tract, thereby increasing engine power. Furthermore, by adjusting the direct injection strategy, stratified combustion and homogeneous combustion modes can be achieved to achieve optimal combustion. This allows for better combustion control, helping to improve engine efficiency and reduce emissions, which requires the use of hydrogen direct injection injectors. However, as a key component of internal combustion engines, hydrogen direct injection injectors, despite significant technological advancements, still have some shortcomings. Hydrogen direct injection injectors operate in high-temperature and high-pressure environments for extended periods of time, and prolonged use can lead to wear, corrosion, or other failures. The durability and reliability of hydrogen direct injection injectors need to be further improved to meet the automotive industry's requirements for long life and low maintenance costs.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a hydrogen injector and an internal combustion engine combustion system to solve the defects and deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides a hydrogen injector, comprising:

[0007] A hydrogen injector body, wherein the hydrogen injector body is provided with a first hydrogen injection port;

[0008] an extended nozzle, disposed at one end of the hydrogen injector body close to the first hydrogen injection port, the extended nozzle extending along the axial direction of the hydrogen injector body, and having a second hydrogen injection port disposed at one end of the extended nozzle away from the hydrogen injector body;

[0009] An insulating pin is arranged in the extended nozzle, and the insulating pin is located between the first hydrogen injection port and the second hydrogen injection port. The insulating pin is provided with a through hole arranged along its axial direction, and one end of the through hole is connected to the first hydrogen injection port, and the other end is connected to the second hydrogen injection port.

[0010] According to the hydrogen injector provided by the present invention, one end of the extended nozzle is provided with an opening, and the hydrogen injector body is inserted into the opening; the other end of the extended nozzle is provided with a closed surface, and the second hydrogen injection port is arranged on the closed surface.

[0011] According to the hydrogen injector provided by the present invention, the closed surface is provided with at least one through hole to form the second hydrogen injection port.

[0012] According to the hydrogen injector provided by the present invention, the closed surface is a curved surface, and the end of the thermal insulation pin close to the closed surface is provided with an arc-shaped protrusion adapted to the curved surface.

[0013] According to the hydrogen injector provided by the present invention, an arc-shaped recessed portion is provided at one end of the thermal insulation pin close to the first hydrogen injection port.

[0014] The hydrogen injector provided by the present invention further includes:

[0015] a wiring harness connector connected to the hydrogen injector body;

[0016] A control unit is connected to the wiring harness connector via a control signal line, and the control unit is used to control the injection timing and pulse width of the hydrogen injector body.

[0017] The hydrogen injector provided by the present invention further includes:

[0018] A hydrogen pipeline is connected to one end of the hydrogen injector body away from the first hydrogen injection port, and the hydrogen pipeline is used to introduce hydrogen into the interior of the hydrogen injector body.

[0019] The hydrogen injector provided by the present invention further includes:

[0020] The filter is arranged at one end of the hydrogen injector body close to the hydrogen pipeline, and is used for filtering the hydrogen entering the hydrogen injector body.

[0021] According to the hydrogen injector provided by the present invention, the hydrogen injection pressure of the hydrogen injector is greater than 2 MPa.

[0022] The present invention also provides an internal combustion engine combustion system, comprising the hydrogen injector as described in any one of the above items.

[0023] The hydrogen injector provided by the present invention comprises: a hydrogen injector body, the hydrogen injector body being provided with a first hydrogen injection port; an extended nozzle, arranged at one end of the hydrogen injector body near the first hydrogen injection port, the extended nozzle extending axially along the hydrogen injector body, and the end of the extended nozzle away from the hydrogen injector body being provided with a second hydrogen injection port; and a thermal insulation pin, arranged in the extended nozzle, the thermal insulation pin being located between the first hydrogen injection port and the second hydrogen injection port, the thermal insulation pin being provided with a through hole extending along its axial direction, one end of the through hole being connected to the first hydrogen injection port and the other end being connected to the second hydrogen injection port. With such an arrangement, the extended nozzle can be added to the existing hydrogen injector, thereby greatly reducing processing and design costs. The extended nozzle can be used to keep the internal injection port of the hydrogen injector body away from the high temperature and high pressure area, and the thermal insulation pin installed in the extended nozzle can increase thermal resistance and achieve a thermal insulation effect, thereby effectively solving the heat load problem, extending the service life of the hydrogen injector, and facilitating efficient, reliable, and stable operation of the engine. Furthermore, by extending the nozzle, the hydrogen injector body can be positioned away from the top of the main combustion chamber, resolving installation difficulties caused by insufficient headroom. Furthermore, using this hydrogen injector allows any unburned hydrogen active radicals remaining in the extended nozzle to be ejected during the next injection, facilitating stable combustion in the next cycle. This hydrogen injector can be applied to hydrogen engines and ammonia-hydrogen engines, enabling stable and efficient operation of these engines and extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the hydrogen injector provided by the present invention.

[0026] Reference numerals:

[0027] 1: Wiring harness connector; 2: Filter; 3: Coil positioning disc; 4: Coil seat; 5: Coil; 6: Hydrogen injector body; 7: Needle valve; 8: Valve ball; 9: Thermal insulation pin; 10: Extended nozzle; 11: First hydrogen injection port; 12: Second hydrogen injection port; 13: Through hole; 14: Arc-shaped protrusion; 15: Arc-shaped depression. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0032] Please refer to Figure 1 As shown, the embodiment of the present invention provides a hydrogen injector suitable for installation in an internal combustion engine combustion system, comprising a hydrogen injector body 6, a heat insulating pin 9, and an extended nozzle 10. Specifically, as Figure 1As shown, a hydrogen channel is provided inside the hydrogen injector body 6, and a first hydrogen injection port 11 is provided at the lower end thereof to inject hydrogen during the compression stroke. An extended nozzle 10 is provided at one end of the hydrogen injector body 6 close to the first hydrogen injection port 11, and the extended nozzle 10 extends along the axial direction of the hydrogen injector body 6. A second hydrogen injection port 12 is provided at the end of the extended nozzle 10 away from the hydrogen injector body 6. The internal combustion engine combustion system also includes a combustion chamber, which is divided into two parts, including a jet chamber and a main combustion chamber. The jet chamber is provided at the top center of the cylinder head, and a spark plug and an air passage are provided in the jet chamber. A jet hole is provided at the bottom of the jet chamber, and the main combustion chamber is connected to the jet chamber through the jet hole. The extended nozzle 10 is partially inserted into the jet chamber so that the second hydrogen injection port 12 extends into the jet chamber. The thermal insulation pin 9 is arranged in the extended nozzle 10. The thermal insulation pin 9 is located between the first hydrogen injection port 11 and the second hydrogen injection port 12. The thermal insulation pin 9 can be made of cast iron. The thermal insulation pin 9 is provided with a through hole 13 that is arranged along its axial direction. One end of the through hole 13 is connected to the first hydrogen injection port 11, and the other end is connected to the second hydrogen injection port 12. It should be noted that the diameter of the through hole 13 can be determined according to actual design requirements. Specifically, for example, the diameter of the through hole 13 is 0.5 to 2 mm. This can meet the processing requirements and facilitate production and manufacturing on the one hand, and on the other hand, it can ensure that there is a certain thickness between the outer wall of the thermal insulation pin 9 and the hole wall of the through hole 13.

[0033] During operation, during the compression stroke, the hydrogen injector body 6 injects hydrogen from the first hydrogen injection port 11, then into the jet chamber via the through-hole 13 and the second hydrogen injection port 12. The hydrogen ignites and burns within the jet chamber, forming a high-intensity flame jet stream through the jet holes and entering the main combustion chamber. During the power stroke, a high-temperature, high-pressure environment is formed within the main combustion chamber. Due to the air within the extended nozzle 10 and the buffering provided by the thermal insulation pin 9, the temperature and pressure in the nozzle contact area of ​​the hydrogen injector body 6 are lower than those in the main combustion chamber, effectively addressing the thermal load of the hydrogen injector and extending its service life. Furthermore, by extending the nozzle 10, the hydrogen injector body 6 is mounted on top of the cylinder head, away from the main combustion chamber, thus avoiding installation issues caused by limited space on top of the cylinder head. It should be noted that the length and wall thickness of the extended nozzle 10 can be determined based on actual design requirements. For example, the length of the extended nozzle 10 ranges from 30 to 60 mm, a range that fully considers its installation length and avoids interference with other components on the cylinder head. Extended nozzle 10 that is too long or too short can affect the installation of surrounding components. The wall thickness of the extended nozzle 10 ranges from 0.5 to 2 mm, which not only meets processing requirements and facilitates manufacturing, but also avoids excessive thickness of the extended nozzle 10, which would result in an oversized aperture in the jet chamber and hinder installation.

[0034] In this way, the extended nozzle 10 can be installed on the basis of the existing hydrogen injector, thereby greatly reducing the processing and design costs. The internal injection port of the hydrogen injector body 6 can be away from the high-temperature and high-pressure area by the extended nozzle 10, and the extended nozzle 10 is provided with the heat insulation pin 9, which can increase the thermal resistance and achieve the heat insulation effect, thereby effectively solving the heat load problem and improving the service life of the hydrogen injector, which is conducive to the stable and efficient operation of the engine. In addition, the extended nozzle 10 can make the hydrogen injector body 6 away from the top of the main combustion chamber, thereby solving the installation difficulty caused by the insufficient space at the top of the main combustion chamber. The hydrogen injector can be applied to hydrogen-containing internal combustion engines, such as hydrogen engines and dual-fuel engines using ammonia-hydrogen and hydrogen-natural gas, and can realize stable and efficient operation of the engine and prolong the service life of the engine. It should be noted that, as shown in Figure 1 The upper and lower directions in the figure are the axial directions of the hydrogen injector body 6 and the heat insulation pin 9.

[0035] In the embodiment of the present application, one end of the extended nozzle 10 is provided with an opening, and the hydrogen injector body 6 is partially inserted into the opening. Specifically, the inner wall of the extended nozzle 10 is tightly combined with the outer wall of the hydrogen injector body 6 to improve the sealing performance between the two, prevent gas leakage, and ensure reliable operation of the device. The other end of the extended nozzle 10 is provided with a closed surface, and the second hydrogen injection port 12 is arranged on the closed surface. Specifically, the extended nozzle 10 can be integrally machined, one end of which is open, and the other end is closed to form the second hydrogen injection port 12. In this way, the connection between the extended nozzle 10 and the hydrogen injector body 6 is more reliable, and the manufacturing and assembly are facilitated.

[0036] Further, in the embodiment of the present application, the closed surface is provided with at least one through hole to form the second hydrogen injection port 12. Specifically, the number of through holes can be 1 to 8, which is reasonable and meets the hydrogen injection requirements. Each through hole can be uniformly arranged on the closed surface to ensure uniform hydrogen injection, improve the uniformity and stability of airflow propagation, and thereby improve the combustion efficiency. The arrangement forms of each through hole include but are not limited to rectangular array or circular array, etc. In addition, the diameter of the through hole can be 0.5 to 6 mm, which can meet the processing requirements on one hand and facilitate production and manufacturing on the other hand. On the other hand, the size of the injection hole affects the jet flow, and a too large injection hole will reduce the speed of the jet flow and weaken the jet flow strength, which will make the jet ignition effect worse.

[0037] In the optional embodiment of the present application, as shown in Figure 1As shown, the closed surface is curved, and the end of the thermal insulation pin 9 near the closed surface is provided with a curved protrusion 14 that matches the curved surface. Specifically, the curvature of the curved protrusion 14 is smaller than that of the curved surface. This arrangement prevents impact and collision between the thermal insulation pin 9 and the inner wall of the extended nozzle 10 during hydrogen injection, thereby improving the reliability of the hydrogen injector.

[0038] As an optional embodiment of the present invention, an arc-shaped recess 15 is provided at one end of the thermal insulation pin 9 near the first hydrogen injection port 11. This arrangement prevents impact or collision between the thermal insulation pin 9 and the end of the hydrogen injector body 6 during hydrogen injection, thereby extending the service life of the hydrogen injector.

[0039] In a specific embodiment of the present invention, the hydrogen injector further includes a wiring harness connector 1 and a control unit. The wiring harness connector 1 is connected to the hydrogen injector body 6, and the control unit is connected to the wiring harness connector 1 via a control signal line. The control unit is used to control the injection timing and pulse width of the hydrogen injector body 6. Specifically, Figure 1 As shown, the wiring harness connector 1 is mounted on the upper end of the hydrogen injector body 6. The control unit is a mature technology, specifically, an ECU (Electronic Control Unit), so its specific structure and electrical connections are not detailed here. The hydrogen injector is connected to the control signal line via the wiring harness connector 1, and the control signal line is connected to the control unit. This controls the injection timing and pulse width of the hydrogen injector, which are controlled by the control unit to meet the combustion control requirements of the internal combustion engine combustion system.

[0040] In an optional embodiment of the present invention, the hydrogen injector further includes a hydrogen pipeline connected to an end of the hydrogen injector body 6 away from the first hydrogen injection port 11. The hydrogen pipeline is used to introduce hydrogen into the interior of the hydrogen injector body 6. Thus, hydrogen enters the interior of the hydrogen injector through the hydrogen pipeline and then enters the main combustion chamber for combustion.

[0041] Furthermore, in an embodiment of the present invention, the hydrogen injector further includes a filter 2, which is disposed at one end of the hydrogen injector body 6 near the hydrogen pipeline. The filter 2 is used to filter the hydrogen entering the hydrogen injector body 6. This configuration filters the gas entering the hydrogen injector and removes impurities therein, ensuring that the hydrogen entering the injector is clean. This prevents impurities from damaging the injector's internal structure and clogging the internal passages and hydrogen injection ports, ensuring the reliable operation of the hydrogen injector. It also protects other components in the subsequent system, helps improve the reliability and stability of the entire hydrogen supply system, reduces failures and downtime caused by impurities, and improves the combustion efficiency of the hydrogen.

[0042] In a specific embodiment of the present invention, the hydrogen injection pressure of the hydrogen injector is greater than 2 MPa to meet the requirements of using a high-pressure hydrogen injector. It should be noted that high-pressure injection refers to the direct injection of hydrogen into the main combustion chamber during the compression stroke, and high pressure refers to the injection pressure of hydrogen in the intake duct. In addition, the high-pressure hydrogen injector can allow some unburned hydrogen active radicals to remain in the extended nozzle 10. These hydrogen active radicals are ejected during the next injection process, which helps promote combustion in the next cycle and thus promotes stable and efficient engine operation.

[0043] In summary, the embodiment of the present invention provides a high-pressure hydrogen direct injection injector, comprising a wiring harness connector 1, a hydrogen pipeline, a filter 2, a hydrogen injector body 6, a heat insulation pin 9, an extended nozzle 10, and an electronic control unit. In addition, as Figure 1 As shown, the hydrogen injector body 6 is further provided with a coil positioning disc 3, a coil seat 4, a coil 5, a needle valve 7 and a valve ball 8.

[0044] Specifically, if Figure 1 As shown, the wiring harness connector 1 is installed at the upper end of the hydrogen injector body 6. The electronic control unit (ECU) is connected to the wiring harness connector 1 via a control signal line. A thermal insulation pin 9 is installed within an extended nozzle 10, which partially extends into the combustion chamber to complete hydrogen injection. During operation, the electronic control unit (ECU) controls the injection angle and injection pulse width of the hydrogen. Hydrogen enters the hydrogen injector body 6 through the filter 2. The coil holder 4 controls the coil 5, which then energizes it. The coil 5 drives the needle valve 7 upward, which in turn drives the valve ball 8 upward. Hydrogen is ejected from the first hydrogen injection port 11, passes through the thermal insulation pin 9 and the extended nozzle 10, and is ejected from the second hydrogen injection port 12 into the main combustion chamber.

[0045] During the compression stroke, the hydrogen injector sprays hydrogen into the main combustion chamber. During the power stroke, the main combustion chamber forms a high-temperature, high-pressure environment. Due to the air barrier within the thermal insulation pin 9 and the extended nozzle 10, the temperature and pressure in the hydrogen injector's nozzle contact area are lower than those in the main combustion chamber. This effectively reduces the hydrogen injector's heat load and extends its service life.

[0046] In the next cycle, since the extended nozzle 10 contains residual hydrogen radicals from the previous cycle, they are sprayed into the main combustion chamber during the next injection process. Based on the presence of these hydrogen radicals, the ignition delay period is reduced, the flame propagation speed is faster, and it is conducive to combustion in the main combustion chamber.

[0047] In summary, in this embodiment, the original gas injector can be modified, which greatly reduces the manufacturing and design costs. At the same time, the ingenious use of the extended nozzle 10 can solve the heat load and installation problems of the hydrogen injector. In addition, the use of high-pressure airway injection can allow some unburned hydrogen active radicals to remain in the airway, which is beneficial to the combustion stability of the next cycle. The hydrogen injector can be applied to hydrogen engines and ammonia-hydrogen engines, etc., and can achieve stable and efficient operation of hydrogen engines, ammonia-hydrogen engines, etc., and extend the service life of the engine. It is of great significance to solve the practical application problems of direct injection in the cylinder of hydrogen engines, ammonia-hydrogen engines, etc. and solve the current carbon neutrality problem.

[0048] The internal combustion engine combustion system provided by the present invention is described below. The internal combustion engine combustion system described below and the hydrogen injector described above can be referred to in correspondence with each other.

[0049] An embodiment of the present invention further provides an internal combustion engine combustion system, comprising a hydrogen injector as described in each of the above embodiments. Specifically, the internal combustion engine combustion system further comprises a combustion chamber, which is divided into two parts, including a jet chamber and a main combustion chamber. The jet chamber is located at the top center of the cylinder head. A spark plug and an air duct are provided in the jet chamber. A jet hole is provided at the bottom of the jet chamber. The main combustion chamber is connected to the jet chamber through the jet hole. The extended nozzle 10 of the hydrogen injector is partially inserted into the jet chamber, so that the second hydrogen injection port 12 extends into the jet chamber. This arrangement allows the extended nozzle 10 to be added to the existing hydrogen injector, thereby significantly reducing processing and design costs. The extended nozzle 10 can be used to keep the internal injection port of the hydrogen injector body 6 away from high temperature and high pressure areas. In addition, an insulating pin 9 is installed in the extended nozzle 10 to increase thermal resistance and achieve a thermal insulation effect, thereby effectively solving the heat load problem, extending the service life of the hydrogen injector, and facilitating efficient, reliable, and stable operation of the engine. Furthermore, by lengthening the nozzle 10, the hydrogen injector body 6 can be moved away from the top of the main combustion chamber, thus resolving the installation difficulty caused by insufficient space at the top of the main combustion chamber. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the hydrogen injector described above, so it will not be repeated here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hydrogen injector, characterized in that: include: A hydrogen injector body (6), wherein the hydrogen injector body (6) is provided with a first hydrogen injection port (11); an extended nozzle (10) provided at one end of the hydrogen injector body (6) close to the first hydrogen injection port (11), the extended nozzle (10) extending along the axial direction of the hydrogen injector body (6), and a second hydrogen injection port (12) being provided at one end of the extended nozzle (10) away from the hydrogen injector body (6); A heat-insulating pin (9) is provided in the extended nozzle (10), the heat-insulating pin (9) is located between the first hydrogen injection port (11) and the second hydrogen injection port (12), the heat-insulating pin (9) is provided with a through hole (13) extending through the heat-insulating pin (9) along its axial direction, one end of the through hole (13) is connected to the first hydrogen injection port (11), and the other end is connected to the second hydrogen injection port (12); One end of the extended nozzle (10) is provided with an opening, and the other end of the extended nozzle (10) is provided with a closed surface, wherein the closed surface is an arc surface, and the end of the thermal insulation pin (9) close to the closed surface is provided with an arc-shaped protrusion (14) adapted to the arc surface, and the end of the thermal insulation pin (9) close to the first hydrogen injection port (11) is provided with an arc-shaped recessed portion (15).

2. The hydrogen injector according to claim 1, characterized in that The hydrogen injector body (6) is inserted into the opening; the second hydrogen injection port (12) is arranged on the closed surface.

3. The hydrogen injector according to claim 2, characterized in that The closed surface is provided with at least one through hole to form the second hydrogen injection port (12).

4. The hydrogen injector according to claim 1, characterized in that Also includes: A wiring harness connector (1) connected to the hydrogen injector body (6); A control unit is connected to the wiring harness connector (1) via a control signal line, and the control unit is used to control the injection timing and pulse width of the hydrogen injector body (6).

5. The hydrogen injector according to claim 1, characterized in that Also includes: A hydrogen pipeline is connected to an end of the hydrogen injector body (6) away from the first hydrogen injection port (11), and the hydrogen pipeline is used to introduce hydrogen into the interior of the hydrogen injector body (6).

6. The hydrogen injector according to claim 5, characterized in that Also includes: A filter (2) is provided at one end of the hydrogen injector body (6) close to the hydrogen pipeline, and the filter (2) is used to filter the hydrogen entering the hydrogen injector body (6).

7. The hydrogen injector according to claim 1, characterized in that The hydrogen injection pressure of the hydrogen injector is greater than 2 MPa.

8. An internal combustion engine combustion system, characterized in that: The method comprises the hydrogen injector according to any one of claims 1 to 7.

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