Engine device for amphibious vehicle

Abstract

The utility model discloses engine equipment for an amphibious vehicle, the engine equipment for the amphibious vehicle is used for being installed on the amphibious vehicle, the engine equipment for the amphibious vehicle comprises an engine body, the engine body comprises an installation base, a piston piece and a linkage component, the installation base forms a cavity, the piston piece is movably connected to the cavity of the installation base, and the linkage component is arranged on the piston piece. The linkage component is arranged in the cavity so that the cavity can be divided into a combustion chamber with the adjustable size, the piston piece is connected to the linkage component, the piston piece can be driven by the linkage component to move in the cavity so as to adjust the size of the combustion chamber, and the linkage component extends to form a boosting hole channel. The boosting channel is arranged in the combustion chamber, the arranged part of the boosting channel extends in the direction parallel to the moving direction of the piston piece, the boosting channel is provided with a port used for introducing fluid, then the air pressure in the boosting channel is increased to push the piston piece to further move, and an oil-gas mixture in the combustion chamber is fully compressed.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to engine equipment for amphibious vehicles. Background Art

[0002] When amphibious vehicles need to pass through some complex roads with high slopes, some amphibious vehicles often stop halfway up the slope due to the limited power provided by their own engines, which makes the vehicle and people in the vehicle difficult to move forward or backward, and even creates the risk of the vehicle slipping.

[0003] It is known that normal vehicle driving requires the power generated by the engine to be transmitted to the drive wheels through the transmission system to make the drive wheels rotate. Before generating power, most engines need to make the piston in the crank-connecting rod mechanism compress the oil-air mixture entering the cylinder to increase the compression ratio of the oil-air mixture, thereby increasing the internal energy generated by the combustion of the oil-air mixture, and then increasing the pressure inside the cylinder, so that the downward force on the piston increases, which will increase the power generated by the engine to enable the vehicle to move. In this way, if the piston can further compress the oil-air mixture in the cylinder, the engine will provide sufficient power to support amphibious vehicles to pass through some complex roads with high slopes. Utility Model Content

[0004] In order to solve the above technical problems and achieve at least one advantage of the present invention, the present invention provides an engine device for an amphibious vehicle, which is installed on an amphibious vehicle. The engine device for an amphibious vehicle includes:

[0005] An engine body, the engine body comprising a mounting seat, a piston member and a linkage member, wherein the mounting seat is mounted on the amphibious vehicle and the mounting seat forms a cavity, the piston member is movably connected to the cavity of the mounting seat so that the cavity separates a combustion chamber of adjustable volume, the piston member is connected to the linkage member, and the piston member is configured to be driven by the linkage member to move in the cavity to adjust the volume of the combustion chamber, the linkage member extends to form a booster channel, the booster channel is configured to extend partially in a direction parallel to the moving direction of the piston member, and the booster channel is provided with a port for passing fluid.

[0006] According to an embodiment of the present invention, the mounting seat further has a liquid inlet and a cooling cavity connected to the liquid inlet, wherein the cooling cavity is arranged to surround the cavity, and the cooling cavity is configured to allow cooling liquid to flow into it.

[0007] According to one embodiment of the present utility model, the linkage member includes a first connecting member and a second connecting member, wherein the first connecting member is rotatably connected to the second connecting member, and the piston member is connected to the end of the first connecting member away from the second connecting member, and the first connecting member also has a first channel, the second connecting member has a second channel, and when the first connecting member is connected to the second connecting member, the first channel is connected to the second channel to form the boosting channel.

[0008] According to one embodiment of the present invention, the second connecting member is radially recessed inward to form an annular space, the annular space is connected to the second channel, and the annular space is arranged at the position where the second connecting member is connected to the first connecting member, and the annular space is also connected to the first channel of the first connecting member.

[0009] According to an embodiment of the present invention, the mounting seat further forms a protection space communicating with the cavity, and the protection space is arranged to surround the connection between the first connecting member and the second connecting member.

[0010] According to one embodiment of the present utility model, the engine equipment for an amphibious vehicle further includes an oil-gas delivery assembly, which includes an oil delivery component, an air delivery component, and an oil-gas separation component, wherein the oil delivery component is configured to deliver engine oil to the oil-gas separation component, and the air delivery component is configured to deliver air to the oil-gas separation component, and the oil-gas separation component is connected to the combustion chamber separated by the cavity, and is configured to deliver the engine oil delivered by the oil delivery component and the air delivered by the air delivery component to the combustion chamber.

[0011] According to one embodiment of the present utility model, the oil delivery component includes an oil supplier, a negative pressure generator and an oil delivery control element, wherein the oil supplier is configured to store engine oil, the negative pressure generator is connected to the oil supplier, and the negative pressure generator is also connected to the oil-gas separation component, and the negative pressure generator is configured to form a negative pressure to guide the engine oil in the oil supplier to be sucked into the oil-gas separation component, the oil delivery control element is connected to the negative pressure generator, and the oil delivery control element is configured to open and close the inlet of the negative pressure generator to deliver engine oil to the oil-gas separation component.

[0012] According to one embodiment of the present invention, the gas delivery component includes a gas delivery pipeline and a gas delivery control element, wherein the gas delivery pipeline is connected to the oil-gas separation component, and the oil-gas separation component is connected to a port of the gas delivery pipeline, and the other port of the gas delivery pipeline is configured to allow air to enter, the gas delivery control element is connected to the gas delivery pipeline, and the gas delivery control element is configured to open and close the inlet of air into the gas delivery pipeline.

[0013] According to one embodiment of the present invention, the oil-gas delivery assembly further includes a liquid oxygen delivery component, which includes a liquid oxygen supplier, a flow pipe and a control unit, wherein the liquid oxygen supplier is configured to store liquid oxygen, a port of the flow pipe is connected to the liquid oxygen supplier, and another port of the flow pipe is connected to the oil-gas separation component, and the flow pipe is configured to pass the liquid oxygen in the liquid oxygen supplier into the oil-gas separation component, the control unit is connected to the flow pipe, and the control unit is configured to open and close the inlet of the liquid oxygen into the flow pipe.

[0014] According to an embodiment of the present invention, the mounting seat further forms a passage communicating with the cavity, the passage communicating with the combustion chamber, and the oil-gas separation component extends to form a pipeline communicating with the passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of an engine device for an amphibious vehicle according to the present invention is shown.

[0016] Figure 2 A cross-sectional view showing the engine device for an amphibious vehicle according to the present invention Figure 1 .

[0017] Figure 3 A cross-sectional view showing the engine device for an amphibious vehicle according to the present invention Figure 2 .

[0018] Figure 4 An enlarged structural view of position A of the engine device for an amphibious vehicle according to the present invention is shown. DETAILED DESCRIPTION

[0019] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0020] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0021] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0022] refer to Figures 1 to 4 According to a preferred embodiment of the present invention, an engine device for an amphibious vehicle will be described in detail below. The engine device for an amphibious vehicle is for installation on an amphibious vehicle, and the engine device for an amphibious vehicle includes an engine body 10, wherein the engine body 10 is arranged on the amphibious vehicle to provide power for the amphibious vehicle.

[0023] Specifically, the engine body 10 includes a mounting base 11, a piston member 12, and a linkage member 13. The mounting base 11 is mounted on the amphibious vehicle and defines a cavity 1101. The piston member 12 is movably connected to the cavity 1101 of the mounting base 11, so that the cavity 1101 divides a combustion chamber of adjustable volume. The piston member 12 is connected to the linkage member 13 and is configured to be driven by the linkage member 13 to move within the cavity 1101 to adjust the volume of the combustion chamber. The linkage member 13 extends to form a boost channel 1301. The boost channel 1301 is configured to extend partially in a direction parallel to the direction of movement of the piston member 12 and is provided with a port for the passage of fluid.

[0024] Those skilled in the art will appreciate that, after the oil-gas mixture is introduced into the combustion chamber separated by the cavity 1101, the linkage member 13 is driven to drive the piston member 12 to move in the cavity 1101 of the mounting seat 11 to compress the oil-gas mixture in the combustion chamber. At the same time, fluid is introduced into the booster channel 1301 to flow along the formation direction of the booster channel 1301, so that the air pressure in the booster channel 1301 gradually increases, thereby squeezing the linkage member 13 to drive the piston member 12 to move. As a result, the source of movement of the piston member 12 is increased, and the single movement distance of the piston member 12 is increased, thereby gradually reducing the volume of the combustion chamber to increase the compression ratio of the oil-gas mixture in the combustion chamber.

[0025] In this way, when the compression ratio of the oil-gas mixture in the combustion chamber increases, the internal energy generated by burning the oil-gas mixture in the combustion chamber will increase, thereby increasing the pressure in the combustion chamber, that is, the downward force on the piston member 12 will also increase. At the same time, the fluid is stopped from being passed into the boost channel 1301, so that the pressure inside the boost channel 1301 begins to be relieved, so that the piston member 12 is no longer squeezed by the air pressure inside the boost channel 1301, but is pushed in the direction of pressure relief. Therefore, after the piston member 12 is subjected to the combined effect of the increased downward force and the pressure relief driving force, the single movement distance of the piston member 12 increases, that is, the volume of the combustion chamber gradually increases, thereby increasing the power generated by the engine body 10 in a single time, so as to help the amphibious vehicle cross a complex road with a high slope.

[0026] Preferably, the mounting seat 11 also has a liquid inlet 1102 and a cooling cavity 1103 connected to the liquid inlet 1102, wherein the cooling cavity 1103 is arranged to surround the cavity 1101, and the cooling cavity 1103 is arranged to pass coolant, and then when the oil-gas mixture is burned in the combustion chamber, coolant is passed into the liquid inlet 1102, so that the coolant flows into the cooling cavity 1103, so that the inner wall forming the combustion chamber is cooled.

[0027] Preferably, the linkage member 13 includes a first connecting member 131 and a second connecting member 132, wherein the first connecting member 131 is rotatably connected to the second connecting member 132, and the piston member 12 is connected to the end of the first connecting member 131 away from the second connecting member 132, and the first connecting member 131 further has a first channel. The second connecting member 132 has a second channel, and when the first connecting member 131 and the second connecting member 132 are connected, the first channel and the second channel are connected to form the boosting channel 1301.

[0028] It should be noted that while the second connecting member 132 is driven to move the first connecting member 131, fluid is introduced into the second channel, allowing the fluid to gradually flow from the second channel into the first channel, causing the air pressure in the second channel and the first channel to gradually increase, thereby gradually pushing the first connecting member 131. As a result, the distance traveled by the piston member 12 in a single compression of the oil-air mixture increases, causing the combustion chamber separated by the cavity 1101 to gradually decrease in volume as the piston member 12 moves, thereby fully compressing the oil-air mixture entering the combustion chamber. The linkage member 13 can be configured as a crank-connecting rod mechanism, and the first connecting member 131 and the second connecting member 132 in the linkage member 13 can be configured as the crank and crankshaft of the crank-connecting rod mechanism, respectively.

[0029] Preferably, the second connecting member 132 is radially recessed inward to form an annular space, and the annular space is connected to the second channel, and the annular space is arranged at the position where the second connecting member 132 is connected to the first connecting member 131, and the annular space is also connected to the first channel of the first connecting member 131, so that when the first connecting member 131 is driven to rotate along the axial direction of the second connecting member 132, the fluid entering the second channel can enter the annular space and then enter the first channel of the first connecting member 131 to increase the air pressure in the boost channel 1301.

[0030] In a preferred embodiment, the mounting base 11 further forms a protective space 1104 connected to the cavity 1101, and the protective space 1104 is arranged to surround the connection between the first connecting member 131 and the second connecting member 132, thereby preventing debris from adhering to the connection between the first connecting member 131 and the second connecting member 132, causing difficulty in rotating the first connecting member 131.

[0031] Furthermore, the engine equipment for an amphibious vehicle further includes an oil-gas delivery assembly 20. Preferably, the oil-gas delivery assembly 20 includes an oil delivery component 21, an air delivery component 22, and an oil-gas separation component 23. The oil delivery component 21 is used to deliver oil to the oil-gas separation component 23. The air delivery component 22 is used to deliver air to the oil-gas separation component 23. The oil-gas separation component 23 is connected to the cavity 1101 of the mounting seat 11 and is configured to separate impurities from the oil delivered by the oil delivery component 21 and from impurities from the air delivered by the air delivery component 22, and to pass the cleaned oil and air into the combustion chamber of the mounting seat 11.

[0032] Preferably, the oil-gas separation component 23 is implemented as an oil-gas separator.

[0033] Specifically, the oil delivery component 21 includes an oil supply 211, a negative pressure generator 212, and an oil delivery control element 213. The oil supply 211 is configured to store engine oil. The negative pressure generator 212 is connected to the oil supply 211 and is also connected to the oil-gas separation component 23. The negative pressure generator 212 is configured to generate negative pressure to draw the engine oil in the oil supply 211 into the oil-gas separation component 23. The oil delivery control element 213 is connected to the negative pressure generator 212 and is configured to open and close the inlet through which the negative pressure generator 212 delivers engine oil to the oil-gas separation component 23. Preferably, the oil delivery control element 213 is implemented as a solenoid valve.

[0034] Preferably, the oil delivery member 21 further includes an atomizing member 214, which is disposed between the negative pressure generator 212 and the oil delivery control element 213. The atomizing member 214 is also connected to the negative pressure generator 212 and configured to atomize the engine oil guided by the negative pressure generator 212, thereby increasing the oil introduction rate. Preferably, the atomizing member 214 is configured as an atomizing nozzle.

[0035] The gas delivery component 22 includes a gas delivery pipeline 221 and a gas delivery control element 222. The gas delivery pipeline 221 is connected to the oil-gas separation component 23. The oil-gas separation component 23 is connected to one port of the gas delivery pipeline 221, and the other port of the gas delivery pipeline 221 is configured to allow air to enter. The gas delivery control element 222 is connected to the gas delivery pipeline 221 and is configured to open and close the inlet for air to enter the gas delivery pipeline 221. Preferably, the gas delivery control element 222 is implemented as a solenoid valve.

[0036] It is understandable that the oil supply member 21 and the air supply member 22 simultaneously supply oil and air into the cavity 1101 of the mounting seat 11 through the oil-air separation member 23 to provide a source of downward pressure on the piston member 12 .

[0037] Furthermore, the oil-gas delivery assembly 20 further includes a liquid oxygen delivery component 24 , and the liquid oxygen delivery component 24 is used to deliver liquid oxygen to the oil-gas separation component 23 .

[0038] Specifically, the liquid oxygen delivery component 24 includes a liquid oxygen supply 241, a flow pipe 242, and a control unit 243. The liquid oxygen supply 241 is configured to store liquid oxygen. One end of the flow pipe 242 is connected to the liquid oxygen supply 241, and another end of the flow pipe 242 is connected to the oil-gas separation component 23. The flow pipe 242 is configured to pass the liquid oxygen in the liquid oxygen supply 241 into the oil-gas separation component 23. The control unit 243 is connected to the flow pipe 242 and is configured to open and close the inlet of the liquid oxygen into the flow pipe 242.

[0039] It should be noted that when the amphibious vehicle travels to a wading area, water begins to enter one end of the gas pipeline 221 of the gas delivery component 22. At this time, the gas delivery control element 222 closes the water inlet port of the gas pipeline 221 to prevent water from entering the oil-gas separation component 23. At the same time, oxygen needs to be introduced into the cavity 1101 of the mounting seat 11 to achieve the purpose of combustion. Therefore, the control unit 243 opens the entrance to the oil-gas separation component 23, so that the liquid oxygen in the liquid oxygen supplier 241 is introduced into the oil-gas separation component 23 and then into the cavity 1101, thereby allowing the oil-gas mixture to be introduced into the cavity 1101 again for combustion, so that the piston member 12 can be pushed and moved by the generated downward pressure to generate power for the movement of the amphibious vehicle.

[0040] In a preferred embodiment, the circulation pipe 242 is arranged to be connected to the portion of the gas pipeline 221 located between the oil-gas separation component 23 and the gas control element 222, so that the circulation pipe 242 and the gas pipeline 221 share the same channel, thereby reducing the usable length of the circulation pipe 242.

[0041] It's worth noting that when the amphibious vehicle leaves the water-forwarding area and no water enters one end of the gas pipeline 221, the control unit 243 closes the inlet of liquid oxygen from the liquid oxygen supply 241 into the oil-gas separation component 23. Simultaneously, the gas supply control element 222 opens the inlet of air into the oil-gas separation component 23, allowing air to flow back into the oil-gas separation component 23 from the gas pipeline 221. In other words, the liquid oxygen delivery component 24 can support the movement of the amphibious vehicle in the water-forwarding area.

[0042] In one embodiment, the mounting seat 11 further forms a passage 1105 connected to the cavity 1101, the passage 1105 is connected to the combustion chamber, and the oil-gas separation component 23 extends to form a pipe to connect to the passage 1105, thereby, the oil-gas separation component 23 can pass the oil-gas mixture from the passage 1105 into the combustion chamber.

[0043] In addition, the engine equipment for an amphibious vehicle further includes a through-sealing member 30. Preferably, the through-sealing member 30 includes a blocking member 31, a fixed block 32, an elastic element 33, and a pressing block 34. The blocking member 31 is movably connected to the passage 1105 of the mounting seat 11, and the blocking member 31 integrally extends outward in a radial direction to form a step 311. The step 311 is configured to be movable along the direction in which the passage 1105 is formed, so that the passage 1105 communicates with the combustion chamber. The fixed block 32 is mounted on the passage 1105, and the blocking member 31 moves on the fixed block 32. The elastic element 33 is sleeved on the blocking member 31, and one end of the elastic element 33 abuts against the fixed block 32 and the other end abuts against the pressing block 34. The pressing block 34 is fixedly connected to the blocking member 31 , and when the passage 1105 is connected to the combustion chamber, the pressing block 34 is configured to press the elastic element 33 toward the fixed block 32 so that the elastic element 33 generates a rebound force.

[0044] It can be understood that when the oil-gas separation component 23 passes the oil-gas mixture into the passage 1105, the step 311 of the sealing member 31 is driven by air pressure to move along the formation direction of the passage 1105 until the step 311 enters the combustion chamber, and the passage 1105 is connected to the combustion chamber, so that the oil-gas mixture passed into the passage 1105 can then pass into the combustion chamber.

[0045] At the same time, as the blocking member 31 moves, the pressing block 34 gradually squeezes the elastic element 33 in the direction close to the fixed block 32, so that the elastic element 33 generates a rebound force opposite to the moving direction of the blocking member 31, and then when the oil-gas separation component 23 stops passing the oil-gas mixture into the passage 1105, the pressing block 34 is driven by the rebound force generated by the elastic element 33 to move in the direction of the blocking member 31, so that the step 311 enters the passage 1105 from the combustion chamber. At this time, the passage 1105 is not connected to the combustion chamber.

[0046] In one embodiment, the aisle 1105 is separated to form a limiting channel, which is used to limit the movement of the step 311, thereby preventing the step 311 from deviating from the predetermined movement when closing the aisle 1105, causing the aisle 1105 to always remain connected to the combustion chamber, making it difficult for the oil-gas mixture in the combustion chamber to be compressed by the piston member 12 in the combustion chamber.

[0047] It is worth mentioning that, in one embodiment, the fixing block 32 is integrally formed with the mounting seat 11 .

[0048] Preferably, the elastic element 33 is implemented as a spring.

[0049] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. An engine device for an amphibious vehicle, for installation on an amphibious vehicle, characterized in that: The engine equipment for an amphibious vehicle comprises: An engine body, the engine body comprising a mounting seat, a piston member and a linkage member, wherein the mounting seat is mounted on the amphibious vehicle and the mounting seat forms a cavity, the piston member is movably connected to the cavity of the mounting seat so that the cavity separates a combustion chamber of adjustable volume, the piston member is connected to the linkage member, and the piston member is configured to be driven by the linkage member to move in the cavity to adjust the volume of the combustion chamber, the linkage member extends to form a booster channel, the booster channel is configured to extend partially in a direction parallel to the moving direction of the piston member, and the booster channel is provided with a port for passing fluid.

2. The engine device for an amphibious vehicle according to claim 1, characterized in that: The mounting seat further comprises a liquid inlet and a cooling cavity communicated with the liquid inlet, wherein the cooling cavity is arranged to surround the cavity, and the cooling cavity is configured to allow cooling liquid to flow into the cooling cavity.

3. The engine device for an amphibious vehicle according to claim 2, characterized in that: The linkage member includes a first connecting member and a second connecting member, wherein the first connecting member is rotatably connected to the second connecting member, and the piston member is connected to the end of the first connecting member away from the second connecting member, and the first connecting member also has a first channel, the second connecting member has a second channel, and when the first connecting member is connected to the second connecting member, the first channel is connected to the second channel to form the boost channel.

4. The engine device for an amphibious vehicle according to claim 3, characterized in that: The second connecting member is integrally recessed radially inward to form an annular space, which is connected to the second channel. The annular space is arranged at the position where the second connecting member is connected to the first connecting member, and is also connected to the first channel of the first connecting member.

5. The engine device for an amphibious vehicle according to claim 4, characterized in that: The mounting seat further forms a protection space communicating with the cavity, and the protection space is arranged to surround the connection between the first connecting member and the second connecting member.

6. The engine device for an amphibious vehicle according to claim 5, characterized in that: The engine equipment for the amphibious vehicle also includes an oil-gas delivery assembly, which includes an oil delivery component, an air delivery component and an oil-gas separation component, wherein the oil delivery component is configured to deliver engine oil to the oil-gas separation component, and the air delivery component is configured to deliver air to the oil-gas separation component. The oil-gas separation component is connected to the combustion chamber separated by the cavity, and is used to deliver the engine oil delivered by the oil delivery component and the air delivered by the air delivery component to the combustion chamber.

7. The engine device for an amphibious vehicle according to claim 6, characterized in that: The oil delivery component includes an oil supplier, a negative pressure generator and an oil delivery control element, wherein the oil supplier is configured to store engine oil, the negative pressure generator is connected to the oil supplier, and the negative pressure generator is also connected to the oil-gas separation component, and the negative pressure generator is configured to form a negative pressure to guide the engine oil in the oil supplier to be sucked into the oil-gas separation component, the oil delivery control element is connected to the negative pressure generator, and the oil delivery control element is configured to open and close the inlet of the negative pressure generator to deliver engine oil to the oil-gas separation component.

8. The engine device for an amphibious vehicle according to claim 7, characterized in that: The gas delivery component includes a gas delivery pipeline and a gas delivery control element, wherein the gas delivery pipeline is connected to the oil-gas separation component, and the oil-gas separation component is connected to a port of the gas delivery pipeline, and the other port of the gas delivery pipeline is configured to allow air to enter, and the gas delivery control element is connected to the gas delivery pipeline, and the gas delivery control element is configured to open and close the inlet of air into the gas delivery pipeline.

9. The engine device for an amphibious vehicle according to claim 8, characterized in that: The oil-gas delivery assembly also includes a liquid oxygen delivery component, which includes a liquid oxygen supplier, a circulation pipeline and a control unit, wherein the liquid oxygen supplier is configured to store liquid oxygen, a port of the circulation pipeline is connected to the liquid oxygen supplier, and another port of the circulation pipeline is connected to the oil-gas separation component, and the circulation pipeline is configured to pass the liquid oxygen in the liquid oxygen supplier into the oil-gas separation component, and the control unit is connected to the circulation pipeline, and the control unit is configured to open and close the inlet of the liquid oxygen into the circulation pipeline.

10. The engine device for an amphibious vehicle according to claim 6 or 9, characterized in that: The mounting seat further forms a passage communicating with the cavity, the passage communicating with the combustion chamber, and the oil-gas separation component extends to form a pipeline communicating with the passage.

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