Novel air inlet valve of unmanned engine

Abstract

The novel unmanned engine air inlet valve is used for being installed between an engine and a carburetor, the novel unmanned engine air inlet valve comprises a valve seat and two one-way valve plates, an air inlet hole and two air outlet holes communicated with the air inlet hole are formed in one end of the valve seat, and the air inlet hole is used for being communicated with the carburetor; the two air outlet holes are used for being communicated with two cylinder bodies of an engine, one ends of the two one-way valve plates are arranged on the end face, close to the air outlet holes, of the valve seat, and the two one-way valve plates are distributed in a central symmetry mode relative to the valve seat so as to shield the two air outlet holes respectively. Therefore, the fresh mixed gas is uniformly distributed for the two cylinder bodies of the single carburetor, so that the use of the carburetor can be reduced to reduce the cost, and the carburetor can be reduced to reduce the workload of machine adjustment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engines, in particular to a novel unmanned engine air inlet valve. BACKGROUND

[0002] A gasoline engine is an engine that converts internal energy into kinetic energy using gasoline as fuel. One working cycle of the gasoline engine includes four piston strokes of intake, compression, work and exhaust. The intake stroke includes opening the intake valve, closing the exhaust valve, moving the piston from the top dead center to the bottom dead center, increasing the volume of the cylinder, and sucking the mixture of air and atomized gasoline into the cylinder; the compression stroke includes closing the intake and exhaust valves, moving the piston from the bottom dead center to the top dead center, compressing the mixture, increasing the pressure of the mixture to 0.6-1.2 MPa, and increasing the temperature to 600-700 K; the work stroke includes keeping the intake and exhaust valves closed, igniting the mixture by the spark plug when the piston approaches the top dead center, making the gas expand to push the piston from the top dead center to the bottom dead center, rotating the crank through the connecting rod, and outputting mechanical energy; and the exhaust stroke includes opening the exhaust valve, moving the piston from the bottom dead center to the top dead center, and forcibly discharging the exhaust gas to the atmosphere.

[0003] The structure of the gasoline engine can be roughly divided into a body, a crankshaft connecting rod mechanism, a valve train, a fuel supply system, a cooling system, a lubricating system and a starting system. The fuel supply system mainly includes a gasoline tank, a gasoline pump, a gasoline filter, an air filter, a carburetor, an intake pipe, an exhaust pipe and an exhaust silencer, which mix gasoline and air into combustible mixture and discharge exhaust gas.

[0004] The engine of the unmanned aerial vehicle needs to provide sufficient power, and is often designed as a multi-cylinder structure, and then a carburetor is provided for each cylinder to mix fuel and air. However, this configuration of providing a carburetor for each cylinder has the following disadvantages: first, the cost of providing multiple carburetors is high; second, since the carburetor is a mechanical mixing structure, the ratio of gasoline to air is adjusted by adjusting the carburetor, especially during subsequent tuning, in order to make the engine in a good power output state, repeated fine tuning is required. Therefore, providing a carburetor for each cylinder results in too many carburetors, which increases the duration and difficulty of subsequent tuning. Therefore, in order to solve the above problems, the novel unmanned engine air inlet valve of the present application is proposed. SUMMARY

[0006] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a novel unmanned engine air inlet valve which can uniformly provide fresh mixture for two cylinders using a single carburetor.

[0007] The technical scheme adopted by the present application is: A new unmanned engine air inlet valve for installation between an engine and a carburetor, comprising: a valve seat having an air inlet hole and two air outlet holes on one end thereof, the air inlet hole being used for communication with the carburetor, and the two air outlet holes being used for communication with two cylinder bodies of the engine; and two one-way valve pieces, one end of each of the two one-way valve pieces being arranged on the end face of the valve seat close to the air outlet holes, and the two one-way valve pieces being centrally symmetrically distributed relative to the valve seat to shield the two air outlet holes respectively.

[0008] Optionally, the new unmanned engine air inlet valve further comprises two elastic pieces, one end of each of the two elastic pieces being arranged on the end face of the valve seat close to the air outlet holes, and the two elastic pieces being centrally symmetrically distributed relative to the valve seat, and the two elastic pieces being aligned with the two one-way valve pieces respectively, and the other end of each of the two elastic pieces being warped away from the valve seat.

[0009] Optionally, the one-way valve piece is made of carbon fiber material.

[0010] Optionally, the valve seat comprises an air inlet seat and a gas distribution seat, the gas distribution seat being arranged on the air inlet seat, the air inlet hole being located on the air inlet seat, and the two air outlet holes being located on the gas distribution seat.

[0011] Optionally, the two air outlet holes are provided with a parting taper angle close to the air inlet hole.

[0012] Optionally, two protruding portions are respectively arranged on the side face of the gas distribution seat away from the air inlet seat, the two air outlet holes respectively penetrating through the two protruding portions, and the two one-way valve pieces and the two elastic pieces being respectively arranged on the end faces of the two protruding portions away from the gas distribution seat.

[0013] Optionally, the included angle between the end face of the protruding portion away from the gas distribution seat and the surface of the gas distribution seat is 6°-10°.

[0014] Optionally, a sleeve frame is further arranged on the end face of the gas distribution seat away from the air inlet seat, and the sleeve frame is sleeved on the outer side of the two protruding portions.

[0015] Optionally, a first sealing gasket is further arranged on the sleeve frame.

[0016] Optionally, a supporting protruding block is arranged on the side face of the air inlet seat away from the gas distribution seat, the air inlet hole penetrating through the supporting protruding block, a second sealing gasket being arranged on the supporting protruding block, and the carburetor being arranged on the supporting protruding block so that the carburetor and the supporting protruding block jointly press the second sealing gasket.

[0017] The beneficial effects of this invention are: This invention discloses a novel intake valve for an unmanned engine, installed between the engine and the carburetor. It includes a valve seat and two one-way valve plates. One end of the valve seat has an intake port and two outlet ports, both communicating with the intake port. The intake port communicates with the carburetor, and the two outlet ports communicate with the two cylinders of the engine. One end of each of the two one-way valve plates is located on the end face of the valve seat near the outlet port, and the two one-way valve plates are centrally symmetrically distributed relative to the valve seat to respectively block the two outlet ports. In this way, a single carburetor evenly distributes the fresh air-fuel mixture to both cylinders, reducing the number of carburetors used and lowering costs. Furthermore, reducing the number of carburetors also reduces the workload of engine setup. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation structure of a novel unmanned engine intake valve according to one embodiment of the present invention. Figure 2 for Figure 1 An exploded structural diagram of the installation structure of the novel unmanned engine intake valve is shown. Figure 3 This is a schematic diagram of the structure of a novel unmanned engine intake valve according to one embodiment of the present invention; Figure 4 for Figure 3 The diagram shows the exploded structure of the intake valve of the novel unmanned engine. Figure 5 This is a schematic diagram of the structure of the gas distribution seat according to one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 10. New type of unmanned engine intake valve; 20. Engine; 30. Carburetor; 100. Valve seat; 200. One-way valve plate; 111. Inlet port; 121. Outlet port; 300. Spring; 110. Inlet seat; 120. Air distribution seat; 122. Parting cone angle; 123. Protrusion; 130. Sleeve frame; 140. First sealing gasket; 112. Supporting protrusion; 150. Second sealing gasket. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention.

[0023] like Figures 1 to 4As shown, a novel unmanned engine intake valve 10 is installed between an engine 20 and a carburetor 30. It includes a valve seat 100 and two one-way valve plates 200. One end of the valve seat 100 is provided with an intake hole 111 and two exhaust holes 121 that are both connected to the intake hole 111. The intake hole 111 is used to communicate with the carburetor 20, and the two exhaust holes 121 are used to communicate with the two cylinders of the engine 20. One end of each of the two one-way valve plates 200 is provided on the end face of the valve seat 100 near the exhaust hole 121, and the two one-way valve plates 200 are centrally symmetrically distributed with respect to the valve seat 100 to respectively shield the two exhaust holes 121.

[0024] It should be noted that the engine 20 has at least one set of cylinder blocks, each set of cylinder blocks including two symmetrically distributed cylinder blocks. A single intake valve 10 of the novel unmanned engine of this application is configured for each set of cylinder blocks to evenly distribute the fresh air-fuel mixture. It should be noted that, for ease of description, this application uses a set of cylinder blocks as an example for illustration, but it should not be construed as meaning that the novel unmanned engine intake valve 10 of this application can only be adapted to an engine 20 with one set of cylinder blocks. Rather, it can be adapted to an engine 20 with any number of sets of cylinder blocks, as long as each set of cylinder blocks includes two symmetrically distributed cylinder blocks. The fuel ports of these two symmetrically distributed cylinder blocks are respectively connected to the two exhaust ports 121 of the novel unmanned engine intake valve 10 of this application, and the fuel outlet of the carburetor 30 is connected to the intake port 111 of the novel unmanned engine intake valve 10 of this application. In this way, the fresh air-fuel mixture of the carburetor 30 can be evenly distributed to the two cylinder blocks in the same set. It should be noted that the carburetor 30 can be made using existing technology, and the structure of the carburetor 30 is not within the scope of protection of this application, so it will not be described in detail here. Similarly, the internal structure of the engine 20 is not within the scope of protection of this application, so it will not be described in detail here. Specifically, one of the two opposing end faces of the valve seat 100 has an intake port 111, and the other has two exhaust ports 121, both of which are connected to the intake port 111 through the interior of the valve seat 100. After the valve seat 100 is bolted to the engine 20, the carburetor 30 is then bolted to the valve seat 100. Further, two one-way valve plates 200 are respectively mounted on the end faces of the two exhaust ports 121. Specifically, one end of one of the one-way valve plates 200 is fixed to the valve seat 100 by a screw, so that the one-way valve plate 200 covers one of the exhaust ports 121. It is important to note that the two one-way valve plates 200 are centrally symmetrically distributed with respect to the valve seat 100. That is, the two one-way valve plates 200 are fixed to different ends of the valve seat 100. For example, when the left end of the first one-way valve plate 200 is fixed to the valve seat 100, the right end of the second one-way valve plate 200 is fixed to the valve seat 100. This allows the two one-way valve plates 200 to open and close in opposite directions on the valve seat 100. Thus, when a negative pressure is formed inside the engine 20, the fresh air-fuel mixture in the carburetor 30 enters the valve seat 100 through the intake port 111, and after being evenly distributed through the two outlet ports 121, the two one-way valve plates 200 open, allowing the two evenly distributed portions of fresh air-fuel mixture to enter the two cylinders of the engine 20 respectively. When the air pressure inside the engine 20 rises, the two one-way valve plates 200 close and seal the two air outlets 121. In this way, the fresh air-fuel mixture can only be evenly distributed from the carburetor 30 through the valve seat 100 to the two cylinders of the engine 20 in one direction.Thus, compared to the existing technology of configuring one carburetor for each cylinder, this application, through the novel unmanned engine intake valve 10, can evenly distribute the air-fuel mixture of a single carburetor 30 into two parts to be sent into the two cylinders of the engine 20 respectively, thereby reducing costs by reducing the number of carburetor 30; moreover, the number of carburetor 30 is reduced by half. For example, when there are ten cylinders, only five carburetor 30s need to be configured. In this way, the number of carburetor 30s is greatly reduced, and the carburetor 30 adjustment can be greatly reduced during subsequent engine debugging, thereby improving the efficiency of subsequent engine debugging.

[0025] like Figures 2 to 4 As shown, in one embodiment, the novel unmanned engine intake valve 10 further includes two spring plates 300. One end of each spring plate 300 is disposed on the end face of the valve seat 100 near the air outlet 121, and the two spring plates 300 are centrally symmetrically distributed with respect to the valve seat 100. The two spring plates 300 are respectively aligned with two one-way valve plates 200, and the other end of the two spring plates 300 is bent away from the valve seat 100.

[0026] It should be noted that, in order to precisely control the opening angle of the one-way valve plate 200, a spring plate 300 is provided to limit the one-way valve plate 200. Specifically, one end of the spring plate 300 is fixedly mounted on the valve seat 100 along with one end of the one-way valve plate 200. The spring plate 300 is made of metal and has a rectangular frame structure. The other end of the spring plate 300 is warped away from the valve seat 100. Thus, when the one-way valve plate 200 opens, it is ultimately abutted by the spring plate 300. Therefore, by adjusting the degree of warping of the spring plate 300, the final opening angle of the one-way valve plate 200 can be adjusted, thereby allowing the fresh air-fuel mixture of the carburetor 30 to be evenly distributed through the intake valve 10 of the novel unmanned engine of this application and sent into the two cylinders of the engine 20.

[0027] In one embodiment, the one-way valve plate 200 is made of carbon fiber. Thus, the one-way valve plate 200 made of carbon fiber has a certain degree of rigidity. When there is negative pressure inside the engine 20, it can quickly open. When the pressure inside the engine 20 rises, the one-way valve plate 200 can quickly conform to the end face of the exhaust port 121 to close the channel with the valve seat 100 and prevent the fresh air-fuel mixture from flowing back.

[0028] like Figures 2 to 4 As shown, in one embodiment, the valve seat 100 includes an air inlet seat 110 and an air distribution seat 120. The air distribution seat 120 is disposed on the air inlet seat 110, the air inlet hole 111 is located on the air inlet seat 110, and the two air outlet holes 121 are both located on the air distribution seat 120.

[0029] It should be noted that the valve seat 100 needs to have an air inlet 111 at one end and two air outlets 121 on the opposite end face. Therefore, the valve seat 100 needs to be machined into a bisecting channel structure. To facilitate machining, the valve seat 100 is configured as a combination of an air inlet seat 110 and an air distribution seat 120. Specifically, the air inlet 111 is a through-hole structure on the air inlet seat 110. The two air outlets 121 are a through-hole structure on the air distribution seat 120. This facilitates machining the air inlet 111 on the air inlet seat 110 and the two air outlets 121 on the air distribution seat 120. After the air distribution seat 120 is fastened to the air inlet seat 110, a valve seat 100 with a single air inlet 111 at one end and two air outlets 121 at the other end can be obtained.

[0030] like Figure 4 and Figure 5 As shown, in one embodiment, two air outlets 121 are provided with a parting cone angle 122 near the air inlet 111.

[0031] It should be noted that the parting cone 122 is an acute-angle structure, and the parting cone 122 is located at the diameter position of the intake port 111. In this way, after the fresh air-fuel mixture of the carburetor 30 enters the intake port 111, it is evenly distributed in the two exhaust ports 121 under the action of the parting cone 122. This can improve the smoothness of the flow of the fresh air-fuel mixture, so that the fresh air-fuel mixture can be drawn into the cylinder more naturally and smoothly.

[0032] like Figure 4 As shown, in one embodiment, two protrusions 123 are respectively provided on the side of the air distribution seat 120 away from the air intake seat 110, and two air outlets 121 pass through the two protrusions 123 respectively. Two one-way valve plates 200 and two spring plates 300 are respectively provided on the end face of the two protrusions 123 away from the air distribution seat 120.

[0033] It should be noted that the two protrusions 123 are integrally formed on the end face of the air distribution seat 120 away from the air intake seat 110. The one-way valve plate 200 and the spring plate 300 are fixedly installed on the protrusions 123. In this way, it can be ensured that the one-way valve plate 200 can reliably close the air outlet 121 in one direction.

[0034] In one embodiment, the angle between the end face of the protrusion 123 away from the air distribution seat 120 and the surface of the air distribution seat 120 is 6° to 10°.

[0035] It should be noted that, for example, the angle between the end face of the protrusion 123 and the surface of the air distribution seat 120 is 7.3°. Thus, the end face of the protrusion 123 is inclined relative to the air distribution seat 120, and the two protrusions 123 are inclined in opposite directions, which facilitates the rapid extraction of fresh air-fuel mixture into the engine 20.

[0036] like Figure 3 and Figure 4 As shown, in one embodiment, a sleeve 130 is also provided on the end face of the air distribution seat 120 away from the air intake seat 110, and the sleeve 130 is fitted on the outside of the two protrusions 123.

[0037] It should be noted that after the sleeve 130 is superimposed on the end face of the air distribution seat 120 near the protrusion 123, when it is installed on the engine 20, the sleeve 130 is tightly fitted to the engine 20 for fixed installation.

[0038] like Figure 3 and Figure 4 As shown, in one embodiment, a first sealing gasket 140 is also provided on the sleeve frame 130.

[0039] It should be noted that the first sealing gasket 140 is used to eliminate the gap between the sleeve frame 130 and the engine 20 mounting position. In one embodiment, the first sealing gasket 140 is made of rubber.

[0040] like Figure 2 As shown, in one embodiment, a support protrusion 112 is provided on the side of the air intake seat 110 away from the air distribution seat 120, the air intake hole 111 passes through the support protrusion 112, a second sealing gasket 150 is provided on the support protrusion 112, and the carburetor 30 is provided on the support protrusion 112 so that the carburetor 30 and the support protrusion 112 together press and clamp the second sealing gasket 150.

[0041] It should be noted that, in order to reliably install and fix the carburetor 30 to the intake seat 110, a protruding support protrusion 112 is provided on the intake seat 110, and a second sealing gasket 150 is then fitted onto the support protrusion 112. In one embodiment, the second sealing gasket 150 is also made of rubber. Finally, the carburetor 30 is fitted onto the second sealing gasket 150, and then the carburetor 30 is locked onto the support protrusion 112 with bolts, clamping the second sealing gasket 150, thereby eliminating the installation gap between the intake seat 110 and the carburetor 30.

[0042] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A new type of engine air intake valve for installation between the engine and carburetor, characterized in that, The utility model relates to a new type of unmanned engine air inlet valve, which comprises: a valve seat, one end of the valve seat is provided with an air inlet hole and two air outlet holes, the air inlet hole is used for being communicated with the carburetor, and the two air outlet holes are used for being communicated with two cylinder bodies of the engine; and two one-way valve sheets, one end of the two one-way valve sheets is arranged on the end face of the valve seat close to the air outlet holes, and the two one-way valve sheets are centrally symmetrically distributed relative to the valve seat to shield the two air outlet holes respectively.

2. The novel engine intake valve for unmanned vehicles as claimed in claim 1, wherein, The new type of unmanned engine air inlet valve further comprises two elastic sheets, one end of the two elastic sheets is arranged on the end face of the valve seat close to the air outlet holes, and the two elastic sheets are centrally symmetrically distributed relative to the valve seat, and the two elastic sheets are aligned with the two one-way valve sheets respectively, and the other end of the two elastic sheets is warped away from the valve seat.

3. The novel engine intake valve for unmanned vehicles as claimed in claim 1, wherein, The one-way valve sheet is made of carbon fiber material.

4. The novel engine intake valve for unmanned vehicles as claimed in claim 2, wherein, The valve seat comprises an air inlet seat and a gas distribution seat, the gas distribution seat is arranged on the air inlet seat, the air inlet hole is located on the air inlet seat, and the two air outlet holes are located on the gas distribution seat.

5. The novel engine intake valve without a valve spring for unmanned aerial vehicles according to claim 4, characterized in that, The two air outlet holes are provided with a parting taper angle close to the air inlet hole.

6. The novel engine intake valve for unmanned vehicles as claimed in claim 4, wherein, Two protruding parts are arranged on the side face of the gas distribution seat away from the air inlet seat, the two air outlet holes penetrate through the two protruding parts respectively, and the two one-way valve sheets and the two elastic sheets are arranged on the end faces of the two protruding parts away from the gas distribution seat respectively.

7. The novel engine intake valve of claim 6, wherein, The included angle between the end face of the protruding part away from the gas distribution seat and the surface of the gas distribution seat is 6-10 degrees.

8. The novel engine intake valve for unmanned vehicles of claim 6, wherein, A sleeve frame is further arranged on the end face of the gas distribution seat away from the air inlet seat, and the sleeve frame is arranged on the outer side of the two protruding parts.

9. The novel engine intake valve of claim 8, wherein, A first sealing gasket is further arranged on the sleeve frame.

10. The novel engine intake valve for unmanned vehicles as claimed in claim 4, wherein, A supporting protruding block is arranged on the side face of the air inlet seat away from the gas distribution seat, the air inlet hole penetrates through the supporting protruding block, a second sealing gasket is arranged on the supporting protruding block, and the carburetor is arranged on the supporting protruding block, so that the carburetor and the supporting protruding block press the second sealing gasket together.

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