Injection structure, gas inlet structure, gas inlet assembly and methanol engine
By designing the injection structure so that the methanol injector passes through the exhaust port into the cylinder, avoiding contact with the inner wall of the intake manifold, the problem of methanol residue is solved, and the engine performance and combustion efficiency are improved.
Patent Information
- Application Number
- CN202520592982.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-31
AI Technical Summary
In the existing M100 methanol engine, the intake manifold injection method causes methanol residue to remain on the inner wall of the intake manifold, affecting engine performance.
Design an injection structure in which the injection head passes through the air outlet and has no intersection with the inner side of the air pipe and the inner side of the injection channel. The methanol injector sprays atomized methanol, mixes it with the gas, and then directly enters the cylinder, reducing contact with the inner wall.
It effectively avoids methanol residue, improving engine performance and combustion efficiency.
Smart Images
Figure CN223739545U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of methanol engine, especially to a kind of injection structure, air intake structure, air intake assembly and methanol engine. BACKGROUND
[0002] At present, the injection mode of M100 methanol engine mainly has intake port injection and cylinder direct injection two kinds. Among them, intake port injection refers to that methanol injection device sprays methanol droplets into air intake manifold, which is relatively mature, and the cost is lower, and also can lubricate valve during injection, and has become the mainstream technology in M100 methanol engine. However, in the M100 methanol engine using intake port injection, a large amount of methanol will contact with the inner wall of air intake manifold, and methanol residues will be attached to the inner wall surface of air intake manifold, which will lead to poor cylinder combustion process and affect the performance of engine. Therefore, there is an urgent need for an injection structure, air intake structure, air intake assembly and methanol engine that can avoid methanol residues and have better performance. SUMMARY
[0003] The utility model discloses a kind of injection structure, air intake structure, air intake assembly and methanol engine, to solve the problems existing in the prior art described above, methanol residues can be avoided, and performance is more excellent.
[0004] To achieve the above object, the utility model provides the following scheme:
[0005] The utility model provides a kind of injection structure, comprising: air pipe and methanol injector, the opening of one end of the air pipe is outlet, the outlet is used to communicate with cylinder cover, the other end is used to communicate with gas source, the lateral wall of the air pipe is provided with a injection channel that communicates the inside and outside of the air pipe, the end that the injection channel communicates with outside is outer end, the methanol injector is fixedly connected on the air pipe, the injection head of the methanol injector extends into the injection channel from the outer end, the inside surface of the injection head is the injection surface along the extension of the injection head axial, the injection surface passes through the outlet, the injection surface and the inside surface of the air pipe and the inside surface of the injection channel all do not have intersection point.
[0006] In some embodiments, it further includes a connecting piece, one end of the connecting piece is detachably fixedly connected on the methanol injector, and the other end is detachably fixedly connected on the air pipe.
[0007] In some embodiments, the connecting piece comprises a first plate-shaped part and a second plate-shaped part, one end of the first part is fixedly connected with 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 on the outer side of the connecting protrusion, and the second part is detachably fixedly connected on the methanol injector.
[0008] In some embodiments, a connecting bolt is further included, one side of the connecting protrusion is provided with a connecting screw hole, the first part is provided with a connecting through hole, and the connecting bolt can pass through the connecting through hole and be screwed 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 has an included angle with the axis of the air pipe.
[0010] In some embodiments, the central axis of the injection head is parallel to the central axis of the injection channel, and the included angle between the central axis of the injection head and the axis of the air pipe is 15-45°.
[0011] In some embodiments, the injection head and the air outlet have a spacing in the axial direction of the air pipe.
[0012] The utility model provides a kind of air intake structure, including elbow and above-mentioned injection structure, one end of the elbow is used to be communicated with gas source, the other end is connected with the one end of the air pipe away from the air outlet and is communicated.
[0013] The utility model provides a kind of air intake assembly, including main pipe and multiple above-mentioned air intake structure, each injection structure is sequentially arranged, in two adjacent air intake structures, the side surface of one air intake structure is fixedly connected with the side surface of another air intake structure, the one end of each elbow away from the air pipe is connected with the main pipe and is communicated, and the main pipe is used to be communicated with gas source.
[0014] The utility model further provides a kind of methanol engine, including engine structure and above-mentioned air intake assembly, each air outlet of the air intake assembly is communicated with the cylinder cover in the engine structure.
[0015] The utility model has achieved the following technical effects relative to prior art:
[0016] The injection structure provided by the utility model, the gas source can drive the gas to flow along the gas pipe, the methanol injector can spray the methanol in atomized state and mix with the gas to form the mixed gas, the mixed gas passes through the cylinder cover and enters the cylinder through the valve, and then can be ignited by the ignition device (spark plug, etc.) and provides power for the movement of the piston in the cylinder. When the methanol injector sprays the methanol, the spraying surface of the injection head passes through the gas outlet, and the spraying surface and the inner side surface of the gas pipe and the inner side surface of the injection channel all do not have intersection points, so the methanol sprayed by the injection head can directly pass through the gas outlet and enter the cylinder cover, the contact between the methanol and the inner side wall of the gas pipe is reduced, thereby avoiding the attachment and residue of the methanol and improving the performance of the engine. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.
[0018] Figure 1 It is the front view of the air intake assembly in some embodiments of the utility model;
[0019] Figure 2 It is the front view of the air intake assembly in some embodiments of the utility model; Figure 1 It is the A-A sectional view in some embodiments of the utility model;
[0020] Figure 3 It is the sectional view of the injection structure in some embodiments of the utility model;
[0021] Figure 4 It is the three-dimensional structure view of the pressing plate in some embodiments of the utility model;
[0022] Figure 5 It is the three-dimensional structure view of the air intake assembly in some embodiments of the utility model;
[0023] In the drawing: 1, gas pipe;2, methanol injector;3, gas 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 technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.
[0025] The utility model discloses a kind of injection structure, air intake structure, air intake assembly and methanol engine, to solve the problems existing in the prior art described above, methanol can be avoided to remain, performance is more excellent.
[0026] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0027] Embodiment one
[0028] The embodiment provides a kind of injection structure, as shown in Figures 1-5 The opening of one end of the gas pipe 1 is the gas outlet 3, the gas outlet 3 is used to communicate with the cylinder cover, the other end is used to communicate with the gas source, a spray channel 4 that communicates the inside and outside of the gas pipe 1 is provided on the side wall of the gas pipe 1, the end that the spray channel 4 communicates with the outside is the outer end 5, the methanol injector 2 is fixedly connected on the gas pipe 1, the injection head 6 of the methanol injector 2 extends into the spray channel 4 from the outer end 5, the inside surface of the injection head 6 along the axial extension surface of the injection head 6 is the injection surface, the injection surface passes through the gas outlet 3, and the injection surface and the inside surface of the gas pipe 1 and the inside surface of the spray channel 4 all do not have intersection.
[0029] The injection structure provided by the embodiment, the gas source can drive gas to flow along the gas pipe 1, the methanol injector 2 can spray methanol in atomized state, the methanol in atomized state is mixed with gas to form mixed gas, the mixed gas passes through the cylinder cover and enters the cylinder through the valve, and then is ignited by the ignition device (spark plug, etc.) and provides power for the movement of the piston in the cylinder. When the methanol injector 2 sprays methanol, since the injection surface of the injection head 6 passes through the gas outlet 3, and the injection surface and the inside surface of the gas pipe 1 and the inside surface of the spray channel 4 all do not have intersection, the methanol sprayed by the injection head 6 can directly pass through the gas outlet 3 and enter the cylinder cover, reducing the contact of methanol with the inside wall of the gas pipe 1, thereby avoiding the attachment and residue of methanol and improving the performance of the engine. Preferably, the injection surface has intersection with the valve tappet, since the temperature of the valve tappet is relatively high, the evaporation of methanol can be promoted, and the atomization effect is improved.
[0030] It should be noted that the injection head 6 refers to the end part of the methanol injector 2 for directly injecting methanol, and the shape of the elongated surface of the injection head 6 is determined according to the shape of the injection head 6. If the inner side surface of the injection head 6 is a conical surface and the large end faces the inside of the gas pipe 1, the injection surface is a conical surface. If 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 injector, in an embodiment of the present 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 gas pipe 1.
[0032] In an embodiment of the present embodiment, the connecting piece 11 includes a first plate-shaped part 12 and a second plate-shaped part 13, one end of the first part 12 is fixedly connected to one end of the second part 13, the first part 12 is perpendicular to the second part 13, the outside of the gas pipe 1 has a connecting protrusion 7, the first part 12 is detachably fixedly connected to the outside surface of the connecting protrusion 7, and the second part 13 is detachably fixedly connected to the methanol injector 2. The plate-shaped first part 12 and the second part 13 can stably fix the methanol injector 2 to the gas pipe 1, the plate-shaped second part 13 has a large contact area with the methanol injector 2, which can well limit the methanol injector 2, avoid the loosening of the connection between the methanol injector 2 and the gas pipe 1 caused by the vibration of the engine during operation, and prevent methanol leakage.
[0033] It should be noted that in the injection structure provided by the present embodiment, the first part 12 and the second part 13 can be provided in other shapes such as rod body and strip in addition to plate shape, as long as the connection between the connecting piece 11 and the methanol injector 2 can meet the connection requirements; the shape of the connecting protrusion 7 can be set as a table body, a cuboid, a column, etc. according to needs, as long as the connection between the connecting protrusion 7 and the connecting piece 11 can meet the connection requirements.
[0034] In order to facilitate the disassembly and installation of the methanol injector 2, in an embodiment of the present embodiment, the injection structure provided by the present embodiment further includes a connecting bolt 8, one side of the connecting protrusion 7 is provided with a connecting screw hole, the first part 12 is provided with a connecting through hole 14, and the connecting bolt 8 can pass through the connecting through hole 14 and be threadedly connected with the connecting screw hole.
[0035] In an embodiment of the present embodiment, the axis of the gas pipe 1 is a straight line, and the axis of the injection head 6 has an angle with the axis of the gas pipe 1. Because the axis of the injection head 6 has an angle with the axis of the gas pipe 1, the shear force between the airflow and the methanol droplets is large, which can promote the breaking of the droplets, improve the atomization efficiency, and thus improve the combustion efficiency.
[0036] In an embodiment of the present 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 gas pipe 1 is 15°-45°. By setting the angle between the central axis of the injection head 6 and the axis of the straight line segment to be 15°-45°, the oil jet sprayed by the methanol injector 2 is close to the flow rate of the gas in the gas pipe 1, so that the mixing effect of air and methanol can be enhanced, thereby improving the performance of the engine.
[0037] It should be noted that in the injection structure provided in the present embodiment, the angle between the axis of the injection head 6 and the axis of the gas pipe 1 can be adjusted as needed, and is not limited to the range of 15°-45°.
[0038] In an embodiment of the present embodiment, the injection head 6 and the gas outlet 3 have a spacing in the axial direction of the gas pipe 1. Since the injection head 6 and the gas outlet 3 have a spacing, the methanol sprayed by the injection head 6 can first mix with the gas in the gas pipe 1, and then enter the cylinder through the valve, which can further enhance the mixing effect of air and methanol.
[0039] Embodiment Two
[0040] The present embodiment provides an air intake structure, as shown in Figure 2 , which comprises a bend pipe 9 and the injection structure in Embodiment One. One end of the bend pipe 9 is used to communicate with a gas source, and the other end is connected to and communicates with the end of the gas pipe 1 away from the gas outlet 3.
[0041] The air intake structure in the present embodiment uses the injection structure in Embodiment One, so that the methanol sprayed by the injection head 6 can directly pass through the gas outlet 3 and enter the cylinder, reducing the contact of methanol with the inner wall of the gas pipe 1, thereby avoiding the attachment and residue of methanol and improving the performance of the engine.
[0042] Embodiment Three
[0043] The present embodiment provides an air intake assembly, as shown in Figures 1-5 , which comprises a manifold 10 and a plurality of air intake structures in Embodiment Two. The air intake structures are arranged in sequence, and the side surface of one air intake structure is fixedly connected to the side surface of another air intake structure. The end of each bend pipe 9 away from the gas pipe 1 is connected to and communicates with the manifold 10, and the manifold 10 is used to communicate with a gas source.
[0044] The air intake assembly in the present embodiment combines a plurality of air intake structures in Embodiment Two and the manifold 10, thereby having the function of avoiding the attachment and residue of methanol and improving the performance of the engine. The manifold 10, the plurality of gas pipes 1, and the plurality of bend pipes 9 together form an air intake manifold.
[0045] It should be noted that the number of the injection structures in the air intake assembly is not limited, and the number can be set according to requirements, Figure 1 Six injection structures are arranged in one group, and two groups are arranged in total, or three injection structures are arranged in one group, and three groups are arranged, or four injection structures are arranged in one group, and two groups are arranged, etc.
[0046] Embodiment four
[0047] The embodiment provides a methanol engine, which comprises an engine structure and the air intake assembly in the embodiment three, and each air outlet 3 of the air intake assembly is communicated with a cylinder cover in the engine structure.
[0048] The principle and implementation mode of the utility model are described by applying specific examples in the utility model, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range will be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as the limitation of the utility model.
Claims
1. A spray structure characterized by: The application relates to a gas pipe and a methanol injector, one end of the gas pipe is provided with an outlet for communicating with a cylinder head, the other end is used for communicating with a gas source, a spray channel is arranged on the side wall of the gas pipe for communicating with the inside of the gas pipe and the outside, the end of the spray channel communicating with the outside is an outer end, the methanol injector is fixedly connected to the gas pipe, a spray head of the methanol injector extends into the spray channel from the outer end, the inside surface of the spray head along the axial extension surface of the spray head is a spray surface, the spray surface passes through the outlet, and the spray surface does not have intersection points with the inside surface of the gas pipe and the inside surface of the spray channel. The application further relates to a connecting piece, one end of the connecting piece is detachably fixedly connected to the methanol injector, and the other end is detachably fixedly connected to the gas pipe.
2. The spray structure of claim 1, wherein: The connecting piece comprises a first plate-shaped part and a second plate-shaped 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 outside of the gas pipe is provided with a connecting protrusion, the first part is detachably fixedly connected to the outside surface of the connecting protrusion, and the second part is detachably fixedly connected to the methanol injector.
3. The spray structure of claim 2, wherein: The connecting protrusion is provided with a connecting screw hole on one side, the first part is provided with a connecting through hole, and a connecting bolt can pass through the connecting through hole and be screw-connected with the connecting screw hole.
4. The spray structure of claim 3, wherein: The axis of the gas pipe is a straight line, and the axis of the spray head has an included angle with the axis of the gas pipe.
5. The spray structure of claim 1, wherein: The central axis of the spray head is parallel to the central axis of the spray channel, and the included angle between the central axis of the spray head and the axis of the gas pipe is 15-45 degrees.
6. The spray structure of claim 5, wherein: The spray head and the outlet have a spacing in the axial direction of the gas pipe.
7. The spray structure of claim 1, wherein: The application further relates to a bend pipe and the spray structure in any one of claims 1-7, one end of the bend pipe is used for communicating with a gas source, and the other end is connected to and communicates with one end of the gas pipe away from the outlet.
8. An air intake structure characterized by: The application further relates to a total pipe and a plurality of the gas inlet structures in claim 8, the gas inlet structures are arranged in sequence, the side surface of one gas inlet structure is fixedly connected to the side surface of another gas inlet structure, the end of each bend pipe away from the gas pipe is connected to and communicates with the total pipe, and the total pipe is used for communicating with the gas source.
9. An air intake assembly characterized by: The application further relates to an engine structure and the gas inlet assembly in claim 9, and each outlet of the gas inlet assembly communicates with a cylinder head in the engine structure.
10. A methanol engine characterized by: