Fuel gas injection device of engine and engine system

Abstract

The utility model provides a fuel gas injection device of an engine and an engine system. The fuel gas injection device comprises a gas inlet piece, a gas outlet piece and a plurality of gas injection valves. The interior of the gas inlet piece is hollow to form a gas inlet channel, one end of the gas inlet piece is provided with a gas inlet communicated with the gas inlet channel, and the gas inlet is used for being communicated with a gas box; the air outlet piece is hollow to form an air outlet channel, and an air outlet communicated with the air outlet channel is formed in one end of the air outlet piece and used for being communicated with an engine. The multiple gas injection valves are arranged at intervals, the two ends of each gas injection valve communicate with the gas inlet channel and the gas outlet channel correspondingly so as to communicate the gas box with the engine, and gas in the gas box can be input into the engine. When the engine is switched to the full-load state, the multiple gas injection valves are opened at the same time to introduce a large amount of gas into the working cylinder of the engine, so that the gas supply amount can meet the full-load requirement of the working cylinder, the working cylinder reaches the full-load state, the engine is prevented from being damaged, and the working safety of the engine is improved.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a gas injection device and engine system for an engine. Background Technology

[0002] Engines are the core components of tools such as automobiles, ships, and generators. They can burn gas and provide driving force to convert chemical energy into mechanical energy, as well as heat energy into other forms of energy such as electrical energy and hydraulic energy, to meet the needs of various tools.

[0003] An engine system may include an engine and injection valves connected to the engine. The engine includes at least one working cylinder. The injection valves inject fuel gas from the fuel tank into the working cylinder of the engine so that the fuel gas can be burned and do work in the working cylinder.

[0004] When the working cylinder is under full load, it needs to burn a large amount of fuel gas. However, the fuel gas supply of existing injection valves often cannot meet the full load requirements of the working cylinder, preventing it from reaching full load. This can easily lead to engine damage and affect engine operating safety. Utility Model Content

[0005] One object of this application is to provide a gas injection device and engine system for an engine that can meet the various gas demand requirements of an engine.

[0006] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0007] According to one aspect of this application, a gas injection device for an engine is provided, comprising: an intake component, an exhaust component, and a plurality of injection valves; the intake component is hollow to form an intake passage, and one end of the intake component has an intake port communicating with the intake passage, the intake port being used to connect to a gas tank; the exhaust component is hollow to form an exhaust passage, and one end of the exhaust component has an exhaust port communicating with the exhaust passage, the exhaust port being used to connect to an engine; the plurality of injection valves are spaced apart, and the two ends of each injection valve are respectively connected to the intake passage and the exhaust passage to connect the gas tank and the engine, thereby enabling the gas in the gas tank to be input into the engine.

[0008] In some embodiments, the air intake component is provided with a plurality of first communication ports spaced apart along its length, and the plurality of jet valves are connected to the plurality of first communication ports in a one-to-one correspondence; the air outlet component is provided with a plurality of second communication ports spaced apart along its length, and the plurality of jet valves are connected to the plurality of second communication ports in a one-to-one correspondence.

[0009] In some embodiments, the air inlet is provided with a first limiting platform in the first communication port, the first limiting platform being used to abut against and limit the air inlet end of the jet valve; the air outlet is provided with a second limiting platform in the second communication port, the second limiting platform being used to abut against and limit the air outlet end of the jet valve.

[0010] In some embodiments, the gas injection device further includes a first sealing ring, which is housed within the first communication port and located between the air inlet and the jet valve to seal the gap between the air inlet and the air inlet end of the jet valve; the gas injection device further includes a second sealing ring, which is housed within the second communication port and located between the air outlet and the jet valve to seal the gap between the air outlet end of the jet valve and the air outlet.

[0011] In some embodiments, the air intake component has a first groove on the side facing the jet valve, and the jet valve has a first protrusion protruding from the first groove, the first protrusion being detachably engaged in the first groove to limit the rotation of the jet valve relative to the air intake component; and / or, the air outlet component has a second groove on the side facing the jet valve, and the jet valve has a second protrusion protruding from the second groove, the second protrusion being detachably engaged in the second groove to limit the rotation of the jet valve relative to the air outlet component.

[0012] In some embodiments, a first connector is detachably provided on the air intake and a second connector is detachably provided on the air outlet, the first connector and the second connector being detachably connected, thereby limiting the jet valve between the air outlet and the air intake.

[0013] In some embodiments, the gas injection device includes a gas pressure sensor detachably disposed at the other end of the air intake member away from the air inlet.

[0014] In some embodiments, the end of the air intake member is provided with an internal thread at the air intake channel, and the end of the air outlet member is provided with an internal thread at the air outlet channel.

[0015] The air intake and air outlet components have a columnar structure.

[0016] An engine system includes: a gas tank, an engine, and a gas injection device as described above; the gas tank contains gas; the engine includes at least one working cylinder; the gas injection device is connected to the gas tank and the engine to input the gas into the working cylinder.

[0017] In some embodiments, the engine includes a plurality of working cylinders, and the gas injection device corresponds to a plurality of the plurality of working cylinders; or, the engine includes a plurality of working cylinders, and the gas injection device is respectively connected to a plurality of the working cylinders.

[0018] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0019] In this application, when the engine is running, the gas in the gas tank can be delivered to the working cylinder of the engine through the intake component, at least one jet valve, and the exhaust component, thereby enabling the engine to burn and perform work. When the engine switches to full load, multiple jet valves open simultaneously to introduce a large amount of gas into the working cylinder, thereby ensuring that the gas supply meets the full load requirements of the working cylinder, allowing the working cylinder to reach full load status, preventing engine damage, and improving engine operating safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the gas injection device of this utility model.

[0021] Figure 2 This is a structural schematic diagram of the gas injection device of this utility model from another perspective.

[0022] Figure 3 This is a structural cross-sectional view of the gas injection device of this utility model.

[0023] Figure 4 This is an exploded view of the structure of the gas injection device of this utility model.

[0024] Figure 5 This is an exploded view of the gas injection device of this utility model from another perspective.

[0025] Figure 6 This is a sectional view of the gas injection device of this utility model after disassembly.

[0026] The reference numerals in the attached drawings are explained as follows: 100, air inlet; 110, air inlet channel; 120, first connecting port; 121, first limiting platform; 130, first groove; 200, air outlet; 210, air outlet channel; 220, second connecting port; 221, second limiting platform; 300, jet valve; 310, first protrusion; 410, first sealing ring; 420, second sealing ring; 430, gas pressure sensor; 440, first connecting piece; 450, second connecting piece. Detailed Implementation

[0027] Typical embodiments embodying the features and advantages of this application will be described in detail in the following description. It should be understood that this application can have various variations in different embodiments, all of which do not depart from the scope of this application, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] An engine system burns fuel gas to produce high-temperature, high-pressure gas, which then drives a piston to perform work, thus converting the chemical energy of the fuel gas into mechanical energy. Engine systems are widely used in vehicles, ships, aircraft, generators, and other tools.

[0030] An engine system may include an engine (not shown in the figure). The engine includes a working cylinder and a piston. The working cylinder is used to contain and burn fuel gas. The piston is movably housed within the working cylinder. When fuel burns in the working cylinder, the resulting high-pressure air can push the piston to do work within the working cylinder.

[0031] The engine's workload can be adjusted according to user needs, but different workloads require different amounts of fuel. When the engine is operating at full load, insufficient or unstable fuel supply can lead to an overly lean fuel-air mixture, resulting in incomplete combustion and a decrease in power. To meet the power output requirements under full load, the engine needs higher speeds and more fuel, further increasing heat generation and causing overheating. This also exacerbates engine wear and increases the likelihood of malfunctions.

[0032] The engine system also includes a fuel tank (not shown in the diagram). Fuel in the fuel tank can be fed into the engine's working cylinders.

[0033] Figure 1This is a schematic diagram of the structure of the gas injection device of this utility model. Figure 2 This is a structural schematic diagram of the gas injection device of this utility model from another perspective. Figure 3 This is a structural cross-sectional view of the gas injection device of this utility model.

[0034] See Figures 1 to 3 This application provides a fuel injection device for an engine, comprising: an intake component 100, an exhaust component 200, and a plurality of injection valves 300. The intake component 100 is hollow, forming an intake passage 110. One end of the intake component 100 has an intake port communicating with the intake passage 110, which is used to connect to a fuel tank. The exhaust component 200 is hollow, forming an exhaust passage 210. One end of the exhaust component 200 has an exhaust port communicating with the exhaust passage 210, which is used to connect to the engine. The plurality of injection valves 300 are spaced apart. The two ends of each injection valve 300 are respectively connected to the intake passage 110 and the exhaust passage 210 to connect the fuel tank and the engine, thereby enabling the fuel in the fuel tank to be input into the engine.

[0035] When the engine is running, the gas in the gas tank can be delivered to the working cylinder of the engine through the intake component 100, at least one jet valve 300 and the exhaust component 200, so that the engine can burn and do power.

[0036] When the engine switches to full load, the gas in the gas tank enters the intake passage 110, and multiple jet valves 300 open simultaneously, so that a large amount of gas in the intake passage 110 enters the exhaust passage 210, and is then input into the working cylinder of the engine through the exhaust passage 210. This ensures that the fuel supply can meet the full load requirements of the working cylinder, allowing the working cylinder to reach full load, avoiding engine overheating and damage, and improving engine operating safety.

[0037] Figure 4 This is an exploded view of the structure of the gas injection device of this utility model. Figure 5 This is an exploded view of the gas injection device of this utility model from another perspective. Figure 6 This is a sectional view of the gas injection device of this utility model after disassembly.

[0038] See Figures 1 to 6 In this embodiment, the gas injection device includes an air intake 100. The air intake 100 has a columnar structure.

[0039] In some embodiments, the air intake 100 may have an arc-shaped structure.

[0040] See Figures 1 to 6In this embodiment, the air intake channel 110 inside the air intake component 100 extends along the length of the air intake component 100 to pass through both ends of the air intake component 100. Both ends of the air intake component 100 are provided with internal threads at the air intake channel 110 to facilitate the connection of the air intake component 100 with structures such as pipes, detection components or sealing heads, thereby improving the functionality of the air intake component 100 and ensuring the airtightness of both ends of the air intake component 100.

[0041] One end of the air intake component 100 is connected to the gas tank through a pipe, so that the gas in the gas tank can enter the air intake component 100 through the pipe.

[0042] The gas injection device also includes a gas pressure sensor 430, which is detachably installed at the other end of the air intake component away from the air inlet. The gas pressure sensor 430 can detect the pressure parameters in the air intake channel 110 in real time, thereby facilitating the operator to monitor the working status of the air intake component 100 in real time and improving the safety of the air intake component 100 and the stability and reliability of the gas supply.

[0043] Understandably, as the gas pressure in the gas tank gradually decreases as the gas supply decreases, the number of times the jet valve 300 is turned on and off can gradually change according to the detection results of the gas pressure sensor 430, thereby ensuring that the gas injection device can stably, reliably, and adequately supply gas to the working cylinder.

[0044] See Figures 1 to 6 In this embodiment, the intake component 100 is provided with a plurality of first connecting ports 120 spaced apart along its length. Each of the plurality of first connecting ports 120 is connected to a plurality of jet valves 300, allowing the gas in the intake passage 110 to enter the jet valves 300 respectively. The connection between the first connecting ports 120 and the jet valves 300 improves the efficiency of disassembly and assembly of the intake component 100 and the jet valves 300, and reduces the maintenance cost of the gas injection device.

[0045] See Figures 1 to 6 In this embodiment, the air intake component 100 is provided with a first limiting platform 121 in the first communication port 120 to support and limit the air intake end of the jet valve 300.

[0046] In some embodiments, the first limiting platform 121 extends along the inner periphery of the first communication port 120 to improve the support performance and structural strength of the first limiting platform 121. In other embodiments, the first limiting platform 121 is integrally formed with the air intake component 100.

[0047] See Figures 3 to 6In this embodiment, the gas injection device may further include a first sealing ring 410, which is housed within the first communication port 120 and located on the first limiting platform 121. The first sealing ring 410 is used to seal the gap between the air intake component 100 and the air intake end of the jet valve 300, thereby improving the airtightness between the air intake component 100 and the jet valve, thus preventing gas from leaking to the outside through the gap between the air intake component 100 and the jet valve 300, and improving the safety of the gas injection device. Furthermore, the first sealing ring 410 also prevents the jet valve 300 from directly pressing against the air intake component 100, thereby preventing mechanical wear on the air intake component 100 and the jet valve 300.

[0048] In some embodiments, the first sealing ring 410 can be located away from the first limiting platform 121. The first sealing ring 410 abuts against the inner peripheral wall of the first communication port 120 and fits against the outer peripheral wall of the air inlet end of the jet valve 300, thereby sealing the gap between the air inlet component 100 and the air inlet end of the jet valve 300, improving the air tightness between the air inlet component 100 and the jet valve, thereby preventing gas from leaking to the outside from the gap between the air inlet component 100 and the jet valve 300, and improving the safety of the gas injection device.

[0049] See Figures 3 to 6 In this embodiment, the air intake component 100 has a first groove 130 on the side facing the jet valve 300. The first groove 130 is used to accommodate and engage a portion of the jet valve 300, thereby limiting the jet valve 300. When the jet valve 300 is connected to the air intake component 100, the first groove 130 is used to prevent the jet valve 300 from rotating, thereby preventing loosening between the jet valve 300 and the air intake component 100 and ensuring the airtightness between the air intake component 100 and the jet valve 300.

[0050] See Figures 3 to 6 In this embodiment, the gas injection device includes an exhaust component 200. The exhaust component 200 may be columnar and is connected to the intake component 100 through multiple injection valves 300 to receive the gas output from the injection component and output it to the working cylinder of the engine for combustion and power generation.

[0051] In some embodiments, the venting element 200 may have an arc-shaped structure.

[0052] See Figures 1 to 6 In this embodiment, an air outlet 200 is provided with an air outlet channel 210. The air outlet channel 210 extends along the length of the air outlet 200 to pass through both ends of the air outlet 200. Both ends of the air outlet 200 are provided with internal threads at the air outlet channel 210 to facilitate the connection of the air outlet 200 with structures such as pipes, detection components, or sealing heads, thereby improving the functionality of the air outlet 200 and ensuring the airtightness of both ends of the air outlet 200.

[0053] In some embodiments, one end of the exhaust component 200 is connected to the working cylinder of the engine through a pipe to supply air to the working cylinder, and the other end of the exhaust component 200 is connected to a plug (not shown in the figure) to block the other end of the exhaust component 200 and prevent gas leakage in the exhaust passage 210.

[0054] See Figures 3 to 6 In this embodiment, the gas outlet component 200 is provided with a plurality of second connecting ports 220 spaced apart along its length. A plurality of jet valves 300 are connected to each of the plurality of second connecting ports 220 in a one-to-one correspondence, so that the gas in the plurality of jet valves 300 can enter the gas outlet channel 210. The connection between the second connecting ports 220 and the jet valves 300 improves the efficiency of disassembly and assembly of the gas outlet component 200 and the jet valves 300, and reduces the maintenance cost of the gas injection device.

[0055] In this embodiment, the air outlet 200 is provided with a second limiting platform 221 in the second communication port 220 to support and limit the air outlet end of the jet valve 300.

[0056] In some embodiments, the second limiting platform 221 extends along the inner periphery of the second communication port 220 to improve the support performance and structural strength of the second limiting platform 221. In other embodiments, the second limiting platform 221 is integrally formed with the air intake member 100.

[0057] See Figures 3 to 6 In this embodiment, the gas injection device further includes a second sealing ring 420. The second sealing ring 420 is housed within the second communication port 220 and located on the second limiting platform 221. The second sealing ring 420 is used to seal the gap between the gas outlet 200 and the air inlet end of the jet valve 300, thereby improving the airtightness between the gas outlet 200 and the jet valve, thus preventing gas from leaking to the outside through the gap between the gas outlet 200 and the jet valve 300, and improving the safety of the gas injection device. Furthermore, the second sealing ring 420 also prevents the jet valve 300 from directly pressing against the gas outlet 200, thereby preventing mechanical wear on the gas outlet 200 and the jet valve 300.

[0058] In some embodiments, the second sealing ring 420 may be located away from the second limiting platform 221. The second sealing ring 420 may be disposed on the inner periphery of the second communication port 220 and fit against the outer periphery of the gas outlet end of the jet valve 300, thereby sealing the gap between the gas outlet 200 and the gas inlet end of the jet valve 300, improving the airtightness between the gas outlet 200 and the jet valve, thereby preventing gas from leaking to the outside from the gap between the gas outlet 200 and the jet valve 300, and improving the safety of the gas injection device.

[0059] In this embodiment, the air outlet 200 has a second groove (not shown in the figure) on the side facing the jet valve 300. The second groove is used to accommodate and engage a portion of the jet valve 300, thereby limiting the jet valve 300. When the jet valve 300 is connected to the air outlet 200, the second groove is used to prevent the jet valve 300 from rotating, thereby preventing loosening between the jet valve 300 and the air outlet 200 and ensuring the airtightness between the air outlet 200 and the jet valve 300.

[0060] In some embodiments, the outlet component 200 of the gas injection device may not need to have a second groove, and only the inlet component 100 needs to have a first groove 130. In other embodiments, the inlet component 100 of the gas injection device may not need to have a first groove 130, and only the inlet component 100 needs to have a second groove.

[0061] In this embodiment, the jet valve 300 is located between the air intake member 100 and the jet member. The air intake end of the jet valve 300 is located within the first communication port 120 to communicate with the air intake passage 110. The air outlet end of the jet valve 300 is located within the second communication port 220 to communicate with the air outlet passage 210. The jet valve 300 can be opened and closed.

[0062] When the jet valve 300 is open, it can input the gas in the intake passage 110 into the outlet passage 210; when the jet valve 300 is closed, it can block the intake passage 110 and the outlet passage 210, thereby preventing the gas in the intake passage 110 from entering the outlet passage 210.

[0063] In some embodiments, the internal structure of the jet valve 300 can refer to the structure of the jet valve 300 in the related art, so that the gas in the intake passage 110 can be introduced into the outlet passage 210 as needed.

[0064] In other embodiments, the jet valve 300 may include a valve body, a valve stem, and a drive component. The valve body is connected to an air inlet 100 and an air outlet 200 at its two ends, respectively. A conduction channel is formed within the valve body. The valve stem is disposed within the valve body to open or close the conduction channel. The drive component is driveably connected to the valve stem to drive the valve stem to move.

[0065] In this embodiment, the multiple jet valves 300 can be preset with varying numbers of on / off states, on / off times, and on / off sequences based on engine parameters and pressure parameters within the intake passage 110. All jet valves 300 can be completely closed or completely open, or they can open sequentially or partially simultaneously, to regulate the amount of fuel gas input into the working cylinders. This ensures the fuel gas demand under full engine load conditions and guarantees the stability and safety of the engine system.

[0066] See Figures 3 to 6In this embodiment, the jet valve 300 may have a first protrusion 310 protruding from the first groove 130. The first protrusion 310 is detachably engaged within the first groove 130 to limit the rotation of the jet valve 300 relative to the air intake member 100. When the air intake end of the jet valve 300 is connected to the air intake member 100, the first protrusion 310 is accommodated and confined within the first groove 130 to prevent relative rotation between the jet valve 300 and the air intake member 100.

[0067] In some embodiments, the first protrusion 310 protrudes from the outer periphery of the air inlet end of the jet valve 300, and the first groove 130 is connected to the first communication port 120 so that the air inlet end of the jet valve 300 extends into the first communication port 120 and the first protrusion 310 extends into the first groove 130, which can also improve the structural strength between the first protrusion 310 and the jet valve 300.

[0068] In this embodiment, the jet valve 300 has a second protrusion protruding from the second groove. The second protrusion is detachably engaged within the second groove to limit the rotation of the jet valve 300 relative to the air outlet 200. When the air outlet end of the jet valve 300 is connected to the air outlet 200, the second protrusion is accommodated and confined within the second groove to prevent relative rotation between the jet valve 300 and the air outlet 200.

[0069] In some embodiments, the second protrusion protrudes from the outer periphery of the air outlet end of the jet valve 300, and the second groove is connected to the second communication port 220, so that the air outlet end of the jet valve 300 can extend into the second communication port 220 and the second protrusion can extend into the second groove, which can also improve the structural strength between the second protrusion and the jet valve 300.

[0070] In some embodiments, the jet valve 300 may not require a second protrusion; a first protrusion 310 may be provided only for the first groove 130. In other embodiments, the jet valve may not require a first protrusion 310; a second protrusion may be provided only for the second groove.

[0071] In this embodiment, the gas injection device may further include a first connector 440 and a second connector 450. The first connector 440 is detachably disposed on the air inlet 100. The second connector 450 is detachably disposed on the air outlet 200. The first connector 440 and the second connector 450 are detachably connected, thereby confining the injection valve between the air outlet 200 and the air inlet 100.

[0072] The first connector 440 and the second connector 450 can effectively improve the connection strength between the air inlet 100, the jet valve 300 and the air outlet 200, prevent the air inlet 100, the jet valve 300 and the air outlet 200 from shifting or loosening, ensure the airtightness of the gas injection device and effectively prevent gas leakage.

[0073] See Figures 1 to 6 This application provides a gas injection device that can be connected to a gas tank and an engine, so that the gas in the gas tank can be input into the working cylinder of the engine through the intake component 100, the injection valve 300 and the exhaust component 200, so as to provide fuel for the engine to do combustion work.

[0074] When the engine is operating at full load, the gas in the gas tank enters the intake passage 110 through the pipe. After the gas pressure sensor 430 detects the pressure of the gas in the intake passage 110, it opens multiple jet valves 300 as needed, so that the gas in the intake passage 110 can be input into the exhaust passage 210 through the jet valves 300. After mixing in the exhaust passage 210, it is output to the working cylinder of the engine, thereby meeting the gas demand of the working cylinder under full load, avoiding engine overheating and damage, and improving the engine's operating safety.

[0075] See Figures 1 to 6 This application also provides an engine system comprising: a gas tank, an engine, and a gas injection device as described above. The gas tank contains gas. The engine has at least one working cylinder. The gas injection device connects the gas tank and the engine to input gas into the working cylinder.

[0076] In some embodiments, the engine may be a single-cylinder engine or a multi-cylinder engine.

[0077] In this embodiment, the engine includes a working cylinder. A gas injection device is provided for each working cylinder to draw gas from the gas tank into the working cylinder, thereby meeting the gas requirements of the working cylinder in various operating states.

[0078] In some embodiments, the engine includes multiple working cylinders, and there are multiple gas injection devices corresponding to the multiple working cylinders, so that the multiple gas injection devices can meet the gas demand of the multiple working cylinders, avoid insufficient gas supply, and improve the reliability and stability of the engine.

[0079] In other embodiments, the engine includes multiple working cylinders, and a gas injection device is connected to each of the multiple working cylinders.

[0080] In this embodiment, the engine system may further include a mixer. The mixer is disposed between the gas injection device and the working cylinder. The mixer is connected to the gas injection device to mix the gas input from the gas injection device with external air / oxygen to form a gas-fuel mixture. After the gas-fuel mixture is formed, it is then introduced into the working cylinder, thereby improving the combustion efficiency of the gas and the working efficiency of the cylinder.

[0081] Although this application has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since this application can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A gas injection device for an engine, characterized in that, include: An air intake component has a hollow interior forming an air intake channel. One end of the air intake component has an air intake port that communicates with the air intake channel. The air intake port is used to connect to the gas tank. An air outlet component has a hollow interior forming an air outlet channel. One end of the air outlet component has an air outlet that communicates with the air outlet channel. The air outlet is used to connect to the engine. Multiple jet valves are spaced apart, and the two ends of each jet valve are respectively connected to the air intake passage and the air outlet passage to connect the gas tank and the engine, thereby enabling the gas in the gas tank to be input into the engine.

2. The gas injection device according to claim 1, characterized in that, The air intake component is provided with a plurality of first communication ports spaced apart along its length, and the plurality of jet valves are connected to the plurality of first communication ports one by one; The air outlet is provided with a plurality of second communication ports spaced apart along its length, and the plurality of jet valves are connected to the plurality of second communication ports one by one.

3. The gas injection device according to claim 2, characterized in that, The air intake component is provided with a first limiting platform in the first communication port, and the first limiting platform is used to abut against and limit the air intake end of the jet valve. The air outlet is provided with a second limiting platform in the second communication port, and the second limiting platform is used to abut against and limit the air outlet end of the jet valve.

4. The gas injection device according to claim 2 or 3, characterized in that, The gas injection device further includes a first sealing ring, which is housed within the first communication port and located between the air intake component and the jet valve, for sealing the gap between the air intake component and the air intake end of the jet valve. The gas injection device further includes a second sealing ring, which is housed within the second communication port and located between the gas outlet and the jet valve to seal the gap between the gas outlet end of the jet valve and the gas outlet.

5. The gas injection device according to claim 1, characterized in that, The air intake component has a first groove on the side facing the jet valve, and the jet valve has a first protrusion protruding from the first groove. The first protrusion can be detachably engaged in the first groove to limit the rotation of the jet valve relative to the air intake component. And / or, the air outlet has a second groove on the side facing the jet valve, and the jet valve has a second protrusion protruding from the second groove, the second protrusion being detachably engaged in the second groove to limit the rotation of the jet valve relative to the air outlet.

6. The gas injection device according to claim 1, characterized in that, The air intake component is detachably provided with a first connecting member, and the air outlet component is detachably provided with a second connecting member. The first connecting member and the second connecting member are detachably connected, thereby limiting the jet valve to be located between the air outlet component and the air intake component.

7. The gas injection device according to claim 1, characterized in that, The gas injection device includes a gas pressure sensor, which is detachably mounted at the other end of the air intake component away from the air inlet.

8. The gas injection device according to claim 1, characterized in that, The end of the air intake component is provided with an internal thread at the air intake channel, and the end of the air outlet component is provided with an internal thread at the air outlet channel. The air intake and air outlet components have a columnar structure.

9. An engine system, characterized in that, include: A gas tank containing gas; An engine, which includes at least one working cylinder; The gas injection device as described in any one of claims 1 to 8, wherein the gas injection device is connected to the gas tank and the engine to input the gas into the working cylinder.

10. The engine system according to claim 9, characterized in that, The engine includes a plurality of working cylinders, and the gas injection device corresponds to a plurality of the plurality of working cylinders; Alternatively, the engine may include a plurality of working cylinders, and the gas injection device may be connected to the plurality of working cylinders respectively.

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