Injection structure, gas inlet structure, gas inlet assembly and methanol engine

Abstract

The invention discloses an injection structure, a gas inlet structure, a gas inlet assembly and a methanol engine, and relates to the technical field of methanol engines, the injection structure comprises a gas pipe and a methanol injector, an opening in one end of the gas pipe is a gas outlet used for being communicated with a cylinder cover, and the other end of the gas pipe is used for being communicated with a gas inlet source; the side wall of the air pipe is provided with an injection channel communicated with the inside of the air pipe and the outside, the end, communicated with the outside, of the injection channel is the outer end, the methanol injector is fixedly connected to the air pipe, an injection head of the methanol injector extends into the injection channel from the outer end, and the extending face of the inner side face of the injection head in the axial direction of the injection head is an injection face. According to the injection structure, the gas inlet structure, the gas inlet assembly and the methanol engine, methanol residues can be avoided, and the performance is more excellent.

Description

Technical Field

[0001] The present invention relates to the technical field of methanol engines, and in particular to an injection structure, an intake structure, an intake component and a methanol engine. Background Art

[0002] At present, the injection methods of the M100 methanol engine mainly include intake port injection and direct injection. Among them, intake port injection refers to the methanol injection device injecting methanol droplets into the intake manifold. This technology is relatively mature and low-cost. It can also lubricate the valve during injection and has become the mainstream technology in the M100 methanol engine. However, in the M100 methanol engine using intake port injection, a large amount of methanol will come into contact with the inner wall of the intake manifold, and methanol residues will adhere to the inner wall surface of the intake manifold, which will cause the combustion process in the cylinder to deteriorate and affect the performance of the engine. Therefore, there is an urgent need for an injection structure, intake structure, intake assembly and methanol engine that can avoid methanol residues and have better performance. Summary of the invention

[0003] The purpose of the present invention is to provide an injection structure, an intake structure, an intake assembly and a methanol engine to solve the problems existing in the above-mentioned prior art, avoid methanol residue and have better performance.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides an injection structure, comprising: an air pipe and a methanol injector, wherein an opening at one end of the air pipe is an air outlet, the air outlet is used to communicate with a cylinder head, and the other end is used to communicate with an air source, a side wall of the air pipe is provided with an injection channel connecting the inside of the air pipe and the outside, the end of the injection channel connected with the outside is an outer end, the methanol injector is fixedly connected to the air pipe, the injection head of the methanol injector extends from the outer end into the injection channel, the inner side surface of the injection head along the axial direction of the injection head is the injection surface, the injection surface passes through the air outlet, and the injection surface has no intersection with the inner side surface of the air pipe and the inner side surface of the injection channel.

[0006] In some embodiments, a connecting piece is further included, one end of which is detachably fixedly connected to the methanol injector, and the other end of which is detachably fixedly connected to the air pipe.

[0007] In some embodiments, the connecting member includes a plate-shaped first part and a plate-shaped second part, one end of the first part is fixedly connected to one end of the second part, the first part is perpendicular to the second part, the outer side of the air pipe has a connecting protrusion, the first part is detachably fixedly connected to the outer side surface of the connecting protrusion, and the second part is detachably fixedly connected to the methanol injector.

[0008] In some embodiments, a connecting bolt is further included, a connecting screw hole is provided on one side of the connecting protrusion, and a connecting through hole is provided on the first part, and the connecting bolt can pass through the connecting through hole and be threadedly connected with the connecting screw hole.

[0009] In some embodiments, the axis of the air pipe is a straight line, and the axis of the injection head and the axis of the air pipe have an angle.

[0010] In some embodiments, the central axis of the injection head is parallel to the central axis of the injection channel, and the angle between the central axis of the injection head and the axis of the trachea is 15°-45°.

[0011] In some embodiments, the injection head and the gas outlet are spaced apart in the axial direction of the gas pipe.

[0012] The present invention provides an air intake structure, comprising a bent pipe and the above-mentioned injection structure, wherein one end of the bent pipe is used to communicate with an air source, and the other end is connected and communicated with an end of the air pipe away from the air outlet.

[0013] The present invention provides an air intake component, including a main pipe and a plurality of the above-mentioned air intake structures, wherein the injection structures are arranged in sequence, and among two adjacent air intake structures, the side surface of one air intake structure is fixedly connected to the side surface of the other air intake structure, and one end of each of the bent pipes away from the air pipe is connected and communicated with the main pipe, and the main pipe is used to communicate with an air source.

[0014] The present invention also provides a methanol engine, comprising an engine structure and the above-mentioned air intake assembly, wherein each of the air outlets of the air intake assembly is connected to a cylinder head in the engine structure.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] In the injection structure provided by the present invention, the gas source can drive the gas to flow along the air pipe, and the methanol injector can inject methanol in an atomized state and mix it with the gas to form a mixed gas. After the mixed gas passes through the cylinder head and enters the cylinder through the valve, it can be ignited by the ignition device (spark plug, etc.) and provide power for the movement of the piston in the cylinder. When the methanol injector injects methanol, since the injection surface of the injection head passes through the air outlet, and the injection surface has no intersection with the inner side surface of the air pipe and the inner side surface of the injection channel, the methanol injected by the injection head can directly pass through the air outlet and enter the cylinder head, reducing the contact between the methanol and the inner wall of the air pipe, thereby avoiding the adhesion and residue of methanol and improving the performance of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A front view of an air intake assembly in some embodiments of the present invention;

[0019] Figure 2 for Figure 1 Middle AA section view;

[0020] Figure 3 A cross-sectional view of a spray structure in some embodiments of the present invention;

[0021] Figure 4 A three-dimensional structural diagram of a pressing plate in some embodiments of the present invention;

[0022] Figure 5 A three-dimensional structural diagram of an air intake assembly in some embodiments of the present invention;

[0023] In the figure: 1, air pipe; 2, methanol injector; 3, air outlet; 4, injection channel; 5, outer end; 6, injection head; 7, connecting protrusion; 8, connecting bolt; 9, elbow; 10, main pipe; 11, connecting piece; 12, first part; 13, second part; 14, connecting through hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide an injection structure, an intake structure, an intake assembly and a methanol engine to solve the problems existing in the above-mentioned prior art, avoid methanol residue and have better performance.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Embodiment 1

[0028] This embodiment provides a spray structure such as Figure 1-5 As shown, it includes: an air pipe 1 and a methanol injector 2, the opening at one end of the air pipe 1 is an air outlet 3, the air outlet 3 is used to communicate with the cylinder head, and the other end is used to communicate with the air source, and an injection channel 4 connecting the inside of the air pipe 1 and the outside is arranged on the side wall of the air pipe 1, and the end of the injection channel 4 connected with the outside is the outer end 5, the methanol injector 2 is fixedly connected to the air pipe 1, and the injection head 6 of the methanol injector 2 extends from the outer end 5 into the injection channel 4, the inner side surface of the injection head 6 along the axial extension of the injection head 6 is the injection surface, the injection surface passes through the air outlet 3, and the injection surface has no intersection with the inner side surface of the air pipe 1 and the inner side surface of the injection channel 4.

[0029] In the injection structure provided in this embodiment, the gas source can drive the gas to flow along the trachea 1, and the methanol injector 2 can inject methanol in an atomized state. The methanol in an atomized state is mixed with the gas to form a mixed gas. After the mixed gas passes through the cylinder head and enters the cylinder through the valve, it can be ignited by the ignition device (spark plug, etc.) and provide power for the movement of the piston in the cylinder. When the methanol injector 2 injects methanol, since the injection surface of the injection head 6 passes through the gas outlet 3, and the injection surface has no intersection with the inner side surface of the trachea 1 and the inner side surface of the injection channel 4, the methanol injected by the injection head 6 can directly pass through the gas outlet 3 and enter the cylinder head, reducing the contact between the methanol and the inner side wall of the trachea 1, thereby avoiding the attachment and residue of the methanol and improving the performance of the engine. Among them, the injection surface preferably has an intersection with the valve tappet. Since the temperature of the valve tappet is high, the evaporation of methanol can be promoted and the atomization effect can be improved.

[0030] It should be noted that the injection head 6 refers to the end portion of the methanol injector 2 used to directly inject methanol. The shape of the extended surface of the injection head 6 is determined according to the shape of the injection head 6. If the shape of the inner side surface of the injection head is a conical surface and the large end faces the inside of the air pipe 1, the injection surface is a conical surface; if the shape of the inner side surface of the injection head 6 is a cylindrical surface, the injection surface is a cylindrical surface.

[0031] In order to facilitate the fixation of the methanol emitter, in one implementation of this embodiment, a connecting piece 11 is further included, one end of the connecting piece 11 is detachably fixedly connected to the methanol injector 2, and the other end is detachably fixedly connected to the air pipe 1.

[0032] In one implementation of this embodiment, the connector 11 includes a plate-shaped first portion 12 and a plate-shaped second portion 13, one end of the first portion 12 is fixedly connected to one end of the second portion 13, the first portion 12 is perpendicular to the second portion 13, the outer side of the air pipe 1 has a connecting protrusion 7, the first portion 12 is detachably fixedly connected to the outer side surface of the connecting protrusion 7, and the second portion 13 is detachably fixedly connected to the methanol injector 2. The plate-shaped first portion 12 and the second portion 13 can firmly fix the methanol injector 2 on the air pipe 1, and the plate-shaped second portion 13 has a large contact area with the methanol injector 2, which can well limit the methanol injector 2, avoid the vibration generated by the engine during operation and cause the connection between the methanol injector 2 and the air pipe 1 to loosen, and prevent methanol leakage.

[0033] It should be noted that, in the injection structure provided in this embodiment, the first part 12 and the second part 13 can be set to other shapes such as rods, strips, etc. in addition to the plate shape, as long as the connection requirements between the connecting piece 11 and the methanol injector 2 can be met; the shape of the connecting protrusion 7 can be set to a table, a rectangular parallelepiped, a column, etc. as needed, as long as the connection requirements between the connecting protrusion 7 and the connecting piece 11 can be met.

[0034] In order to facilitate the disassembly and installation of the methanol injector 2, in one embodiment of the present embodiment, the injection structure provided in the present embodiment also includes a connecting bolt 8, a connecting screw hole is provided on one side of the connecting protrusion 7, and a connecting through hole 14 is provided on the first part 12. The connecting bolt 8 can pass through the connecting through hole 14 and be threadedly connected with the connecting screw hole.

[0035] In one implementation of this embodiment, the axis of the air pipe 1 is a straight line, and the axis of the injection head 6 is at an angle to the axis of the air pipe 1. Since the axis of the injection head 6 is at an angle to the axis of the air pipe 1, the shear force between the airflow and the methanol droplets is relatively large, which can promote the breakup of the droplets, improve the atomization efficiency, and thus improve the combustion efficiency.

[0036] In one implementation of this embodiment, the central axis of the injection head 6 is parallel to the central axis of the injection channel 4, and the angle between the central axis of the injection head 6 and the axis of the air pipe 1 is 15°-45°. By setting the angle between the central axis of the injection head 6 and the axis of the straight segment to 15°-45°, the oil beam sprayed by the methanol injector 2 is close to the flow rate of the gas in the air pipe 1, which can enhance the mixing effect of air and methanol, thereby improving the performance of the engine.

[0037] It should be noted that, in the injection structure provided in this embodiment, the angle between the axis of the injection head 6 and the axis of the air pipe 1 can be adjusted as needed and is not limited to the range of 15°-45°.

[0038] In one implementation of this embodiment, there is a distance between the injector head 6 and the gas outlet 3 in the axial direction of the air pipe 1. Since there is a distance between the injector head 6 and the gas outlet 3, the methanol injected by the injector head 6 can first be mixed with the gas in the air pipe 1, and then enter the cylinder through the valve, which can further enhance the mixing effect of air and methanol.

[0039] Embodiment 2

[0040] This embodiment provides an air intake structure, such as Figure 2 As shown, it includes a curved pipe 9 and the injection structure in the first embodiment, one end of the curved pipe 9 is used to communicate with the gas source, and the other end is connected and communicated with the end of the gas pipe 1 away from the gas outlet 3.

[0041] The intake structure in this embodiment uses the injection structure in the first embodiment, so that the methanol injected from the injection head 6 can directly pass through the air outlet 3 and enter the cylinder, reducing the contact between the methanol and the inner wall of the air pipe 1, thereby avoiding the adhesion and residue of methanol and improving the performance of the engine.

[0042] Embodiment 3

[0043] This embodiment provides an air intake assembly, such as Figure 1-5 As shown, it includes a main pipe 10 and multiple air intake structures in embodiment 2, and each air intake structure is arranged in sequence. Among two adjacent air intake structures, the side of one air intake structure is fixedly connected to the side of the other air intake structure, and one end of each curved pipe 9 away from the air pipe 1 is connected and communicated with the main pipe 10, and the main pipe 10 is used to communicate with the air source.

[0044] The intake assembly in this embodiment combines multiple intake structures in the second embodiment with the manifold 10, thereby preventing methanol from being attached and remaining, thereby improving the performance of the engine. The manifold 10, multiple air pipes 1, and multiple elbows 9 together form an intake manifold.

[0045] It should be noted that in the present application, the number of injection structures in the air intake assembly is not limited, and the number can be set as required. Figure 1 Six injection structures are set as one group, and two groups are set in total. Three injection structures can also be set as one group, and three groups are set; or four injection structures are set as one group, and two groups are set.

[0046] Embodiment 4

[0047] This embodiment provides a methanol engine, including an engine structure and the air intake assembly in the third embodiment, wherein each air outlet 3 of the air intake assembly is connected to a cylinder head in the engine structure.

[0048] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A spraying structure, characterized in that: include: An air pipe and a methanol injector, wherein the opening at one end of the air pipe is an air outlet, the air outlet is used to communicate with the cylinder head, and the other end is used to communicate with the air source. An injection channel connecting the inside of the air pipe and the outside is arranged on the side wall of the air pipe, and the end of the injection channel connected with the outside is the outer end. The methanol injector is fixedly connected to the air pipe, and the injection head of the methanol injector extends from the outer end into the injection channel. The inner side surface of the injection head along the axial extension of the injection head is the injection surface, and the injection surface passes through the air outlet. The injection surface has no intersection with the inner side surface of the air pipe and the inner side surface of the injection channel.

2. The injection structure according to claim 1, characterized in that: It also includes a connecting piece, one end of which is detachably fixedly connected to the methanol injector, and the other end of which is detachably fixedly connected to the air pipe.

3. The injection structure according to claim 2, characterized in that: The connecting member includes a plate-shaped first part and a plate-shaped second part, one end of the first part is fixedly connected to one end of the second part, the first part is perpendicular to the second part, the outer side of the air pipe has a connecting protrusion, the first part is detachably fixedly connected to the outer side surface of the connecting protrusion, and the second part is detachably fixedly connected to the methanol injector.

4. The injection structure according to claim 3, characterized in that: It also includes a connecting bolt, a connecting screw hole is provided on one side of the connecting protrusion, and the first part is provided with a connecting through hole, and the connecting bolt can pass through the connecting through hole and be threadedly connected with the connecting screw hole.

5. The injection structure according to claim 1, characterized in that: The axis of the air pipe is a straight line, and the axis of the injection head and the axis of the air pipe have an included angle.

6. The injection structure according to claim 5, characterized in that: The central axis of the injection head is parallel to the central axis of the injection channel, and the angle between the central axis of the injection head and the axis of the air pipe is 15°-45°.

7. The injection structure according to claim 1, characterized in that: The injection head and the air outlet are spaced apart in the axial direction of the air pipe.

8. An air intake structure, characterized in that: It comprises a bent pipe and the injection structure described in any one of claims 1 to 7, wherein one end of the bent pipe is used to communicate with an air source, and the other end is connected to and communicated with an end of the air pipe away from the air outlet.

9. An air intake assembly, characterized in that: It includes a main pipe and multiple air intake structures as described in claim 8, each of which is arranged in sequence. Among two adjacent air intake structures, the side surface of one air intake structure is fixedly connected to the side surface of the other air intake structure, and one end of each bent pipe away from the air pipe is connected and communicated with the main pipe, and the main pipe is used to communicate with an air source.

10. A methanol engine, characterized in that: It comprises an engine structure and the air intake assembly as claimed in claim 9, wherein each of the air outlets of the air intake assembly is communicated with a cylinder head in the engine structure.

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