Ignited methanol engine with low pollutant emission

Abstract

The application discloses a low-pollutant-emission ignition type methanol engine and relates to the technical field of methanol engines, which comprises four groups of engine cylinders, each of which is provided with a vaporizer, the back of each engine cylinder is connected with an exhaust pipe, and the outer side of each vaporizer is provided with a liquid adding pipe; the engine cylinder is provided with a fuel pressurizing assembly; the fuel pressurizing assembly comprises a combustion chamber, the combustion chamber is located in the middle part of the engine cylinder, a piston part is slidably connected in the combustion chamber, a hot fire head is fixed to the top of the inner cavity of the engine cylinder, a first gas conveying pipe is fixed in the engine cylinder, a fixed cylinder is in communication with the top of the first gas conveying pipe, a second gas conveying pipe is in communication with the top of the fixed cylinder, a one-way valve is fixed to the top of the inner wall of the fixed cylinder, and a second notch is formed in the engine cylinder; the methanol is pressurized, combustion is promoted, and the emission of pollutants is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of methanol engine, in particular to a low-pollutant emission spark ignition methanol engine. BACKGROUND

[0002] In heavy industry, large machinery and equipment often need strong and reliable power source, the structure of methanol engine is mainly composed of carburetor, cylinder, starting handle, flywheel, clutch, crankcase and other components, methanol engine and gasoline engine are different in the way of igniting fuel, methanol engine has no spark plug, but relies on hot head to ignite the mixture, hot head is located directly above the engine cylinder, hot head is equipped with an electric heating wire inside, and the electric heating wire is red when starting, which uses the red-hot state of the electric heating wire to ignite the mixture, this structure makes methanol engine not need spark plug when igniting the mixture, but realizes it through hot head, in addition, methanol engine also needs to cooperate with special oil tank, exhaust pipe and igniter to start and run.

[0003] Methanol engine is a kind of engine using methanol as fuel, compared with traditional heavy industry gasoline or diesel engine, methanol engine has higher combustion efficiency and less pollution emission, because the chemical structure of methanol is different from that of traditional fuel, it can be decomposed into methane and carbon dioxide at low temperature, and in actual use, methanol fuel itself is toxic, the exhaust of methanol engine usually contains unburned alcohol, formaldehyde and other harmful gas emissions, the reason for the emission of harmful gas of methanol engine is that the combustion of methanol is not sufficient, therefore, a low-pollutant emission spark ignition methanol engine is proposed. SUMMARY

[0004] The purpose of the present application is to make up for the shortcomings of the prior art, and provide a low-pollutant emission spark ignition methanol engine.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a low-pollutant emission spark ignition methanol engine, comprising four groups of engine cylinders, each group of engine cylinders is provided with a vaporizer, and the back of the engine cylinder is connected with an exhaust pipe, the outer side of the vaporizer is provided with a liquid adding pipe, further comprising:

[0006] A fuel supercharging assembly is arranged on the engine cylinder to improve the combustion efficiency of methanol;

[0007] The fuel supercharging assembly comprises a combustion chamber located in the middle of the engine cylinder, a piston part slidingly connected in the combustion chamber, a hot fire head fixed at the top of the engine cylinder inner cavity, a first gas conveying pipe fixed in the engine cylinder, a fixed cylinder communicated at the top of the first gas conveying pipe, a second gas conveying pipe communicated at the top of the fixed cylinder, a one-way valve fixed at the top of the fixed cylinder inner wall, a second notch opened in the engine cylinder, a ratchet wheel rotatingly connected in the second notch, a fixing part fixed on the ratchet wheel inner wall, a first notch opened in the engine cylinder, a fixed shaft installed in the first notch, a second movable frame and a return spring sleeved on the fixed shaft outer surface, a fixed plate fixed on one side of the second movable frame, a pawl articulated with the fixed plate outer side through a torsion spring, a connecting shaft fixed on one side of the second movable frame, a connecting head fixed on the connecting shaft outer end, a plurality of fixed frames installed on the fixed cylinder inner wall, a first movable frame slidingly connected with the fixed frame inner wall, and a connecting frame fixed on the first movable frame bottom.

[0008] As a preferred scheme of the present application, the second gas conveying pipe is internally provided with a preheating pipe, the second gas conveying pipe is communicated with a spray head at the end thereof, and an atomizer is installed between the second gas conveying pipe and the spray head.

[0009] As a preferred scheme of the present application, the end of the pawl is in extrusion contact with the tooth groove of the ratchet wheel, and the fixed plate can block one side of the pawl when the pawl rotates.

[0010] As a preferred scheme of the present application, the return spring is elastically supported between the second movable frame and the first notch, the connecting head is in the shape of a right triangle, and the piston part is in extrusion contact with the inclined surface of the connecting head.

[0011] As a preferred scheme of the present application, the connecting frame passes through and is slidingly connected with the sliding slot, the fixing part is in extrusion contact with the connecting frame, and the fixing part can drive the first movable frame to slide along the inner cavity of the fixed frame when the fixing part extrudes the connecting frame.

[0012] As a preferred scheme of the present application, the one-way valve is communicated with the fixed cylinder, the one-way valve is limited to methanol flowing towards the fixed cylinder only, and the first gas conveying pipe is communicated with the vaporizer.

[0013] As a preferred scheme of the present application, the spray head is fixed at the bottom of the hot fire head, the spray head is in the shape of a bowl, and the middle part of the spray head is hollowed out.

[0014] As a preferred scheme of the present application, a plurality of round holes are opened in the inner wall of the spray head, and the round holes are towards the middle part.

[0015] As the preferred scheme of the present application, the liquid filling pipe is communicated with the vaporizer, and the liquid filling pipe is communicated with the external oil tank, and is used for conveying the methanol solution to the inside of the vaporizer.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] Firstly, the piston part moves to exert a pressure on the connecting head, so that the second movable frame is driven to move along the outer surface of the fixed shaft through the connecting shaft, at this time the pawl is moved by the fixed plate to press the ratchet wheel, so that the ratchet wheel is rotated along the inner side of the second slot, and the fixed part pushes the connecting frame to move when the ratchet wheel rotates, at this time the first movable frame is driven to slide along the outer side of the fixed frame by the connecting frame, and then when a plurality of first movable frames move, the methanol vaporized in the fixed cylinder is compressed, the methanol is pressurized to promote complete combustion, and the emission of pollutants can be further reduced relative to the engine in heavy industry.

[0018] Secondly, the preheating pipe arranged in the second gas conveying pipe preheats the methanol in advance, the methanol is ignited to improve the combustion rate of the methanol.

[0019] Thirdly, the design of the atomizer can increase the spraying pressure of the methanol, atomize the methanol into smaller particles, and uniformly discharge the atomized methanol into the inside of the spray head through the round holes, at this time the methanol is gathered in the middle and ignited by the hot fire head, the sprayed methanol is gathered to the ignition position of the hot fire head, so that the ignition quality is improved, and the insufficient combustion of the methanol caused by poor ignition quality is avoided.

[0020] Other advantages, objects, and features of the present application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art from a consideration of the following specification and drawings, or can be learned from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0022] Figure 2 is a schematic diagram of the cross-sectional structure of the front of the present application;

[0023] Figure 3 is a schematic diagram of the enlarged structure at A in the present application; Figure 2 ​

[0024] Figure 4 It is a schematic structural diagram of a partial cross-section of the top of the present invention;

[0025] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 6 This is a schematic diagram of the disassembly structure of the fixed cylinder of the present invention;

[0027] Figure 7 It is a schematic cross-sectional structural diagram of the fixing cylinder of the present invention;

[0028] Figure 8 This is a schematic diagram of the disassembly structure of the sprinkler head of the present invention.

[0029] In the figure: 1. Engine cylinder; 2. Carburetor; 3. Filling pipe; 4. Exhaust pipe; 5. Combustion chamber; 6. Piston parts; 7. Glow plug; 8. First gas pipe; 9. Fixed cylinder; 10. Second gas pipe; 11. Sprinkler head; 12. Atomizer; 13. Round hole; 14. Fixed frame; 15. First movable frame; 16. Slide groove; 17. Connecting frame; 18. Ratchet; 19. Fixing piece; 20. First notch; 21. Fixed shaft; 22. Second movable frame; 23. Return spring; 24. Fixed plate; 25. Ratchet; 26. Connecting shaft; 27. Connecting head; 28. Preheating pipe; 29. ​​Second notch; 30. One-way valve. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1-8 As shown, the present invention provides a spark-ignition methanol engine with low pollutant emissions, comprising four groups of engine cylinders 1, each group of engine cylinders 1 being equipped with a carburetor 2, an exhaust pipe 4 being connected to the back of the engine cylinder 1, and a liquid filling pipe 3 being installed on the outer side of the carburetor 2, and further comprising:

[0032] A fuel booster assembly, which is provided on the engine cylinder 1 and is used to improve the combustion efficiency of methanol;

[0033] The fuel supercharging assembly comprises a combustion chamber 5 located in the middle of the engine cylinder 1, a piston part 6 slidingly connected inside the combustion chamber 5, a hot fire head 7 fixed at the top of the inner cavity of the engine cylinder 1, a first gas conveying pipe 8 fixed inside the engine cylinder 1, a fixed cylinder 9 communicated at the top of the first gas conveying pipe 8, a second gas conveying pipe 10 communicated at the top of the fixed cylinder 9, a one-way valve 30 fixed at the top of the inner wall of the fixed cylinder 9, a second notch 29 formed in the engine cylinder 1, a ratchet wheel 18 rotatably connected inside the second notch 29, a fixing part 19 fixed to the inner wall of the ratchet wheel 18, a first notch 20 formed in the engine cylinder 1, a fixed shaft 21 installed inside the first notch 20, a second movable frame 22 and a return spring 23 sleeved on the outer surface of the fixed shaft 21, a fixed plate 24 fixed to one side of the second movable frame 22, a pawl 25 hingedly connected to the outer side of the fixed plate 24 through a torsion spring, a connecting shaft 26 fixed to one side of the second movable frame 22, a connecting head 27 fixed to the outer end of the connecting shaft 26, a plurality of fixed frames 14 installed on the inner wall of the fixed cylinder 9, a first movable frame 15 slidingly connected to the inner wall of the fixed frame 14, and a plurality of sliding grooves 16 formed at the bottom of the fixed cylinder 9, and a connecting frame 17 fixed to the bottom of the first movable frame 15.

[0034] When the engine is running, the piston part 6 will move up and down, and when the piston part 6 moves up, a pressure will be applied to the connecting head 27, so that the second movable frame 22 can be driven to move along the outer surface of the fixed shaft 21 through the connecting shaft 26, at this time, the pawl 25 will be pushed to move by the fixed plate 24, so that the pawl 25 is pressed against the ratchet wheel 18, thereby driving the ratchet wheel 18 to rotate along the inner side of the second notch 29, and when the ratchet wheel 18 rotates, the connecting frame 17 will be pushed to move by the fixing part 19, at this time, the first movable frame 15 will slide along the outer side of the fixed frame 14 by the connecting frame 17, and when a plurality of first movable frames 15 move, the methanol vaporized in the fixed cylinder 9 will be compressed, and by pressurizing the methanol, the combustion can be promoted, and the combustion effect of the methanol can be improved by pressurizing, and by pressurizing, the density and concentration of the methanol can be increased, so that the combustion is more complete.

[0035] As shown in Figure 3 , the second gas conveying pipe 10 is provided with a preheating pipe 28, the second gas conveying pipe 10 is communicated with a spray head 11, and the second gas conveying pipe 10 is installed with an atomizer 12 between the second gas conveying pipe 10 and the spray head 11.

[0036] The preheating pipe 28 is arranged inside the second gas conveying pipe 10, and in the cold state, if the methanol cannot be ignited and combusted quickly after being injected into the engine, the unburned methanol will flow along the cylinder wall, which will damage the lubricating oil film on the surface of the cylinder wall, cause poor lubrication between the cylinder and the ring during the starting process, and cause the sealing performance to decrease, thereby increasing the wear of the cylinder.

[0037] As shown in Figure 5 , the end of the pawl 25 is in extrusion contact with the tooth groove of the ratchet wheel 18, and when the pawl 25 rotates, the fixed plate 24 can block one side of the pawl 25.

[0038] Through the design of the pawl 25, when the pawl 25 extrudes the ratchet wheel 18, the ratchet wheel 18 will be pushed to rotate, and when the pawl 25 retreats, the pawl 25 will rotate and cannot drive the ratchet wheel 18 to move through the cooperation between the pawl 25 and the fixed plate 24, and thus the one-way rotation of the ratchet wheel 18 can be controlled through the reciprocating motion of the pawl 25.

[0039] As shown in Figure 2 , 3 , the reset spring 23 is elastically supported between the second movable frame 22 and the first slot 20, the connecting head 27 is a right triangle, and the piston part 6 is in extrusion contact with the inclined surface of the connecting head 27.

[0040] Through the design of the reset spring 23, the second movable frame 22 has good elastic reset performance, and at this time, since the reset spring 23 is in a compressed state, an elastic force is applied to the second movable frame 22, so that the pawl 25 can be reset through the second movable frame 22.

[0041] As shown in Figure 5 , 7 , the connecting frame 17 passes through the sliding groove 16 and is in sliding connection with the sliding groove 16, the fixed part 19 is in extrusion contact with the connecting frame 17, and when the fixed part 19 extrudes the connecting frame 17, the first movable frame 15 can be driven to slide along the inner cavity of the fixed frame 14.

[0042] Through the cooperation between the fixed part 19 and the connecting frame 17, when the fixed part 19 extrudes the connecting frame 17, the connecting frame 17 will be driven to slide along the inner side of the sliding groove 16, so that the first movable frame 15 can be driven to extend and retract along the inner side of the fixed frame 14 through the connecting frame 17, so as to reciprocate and pressurize the methanol.

[0043] As shown in Figure 2 , the one-way valve 30 communicates with the fixed cylinder 9, the one-way valve 30 only allows the methanol to flow towards the fixed cylinder 9, and the first gas conveying pipe 8 communicates with the vaporizer 2.

[0044] Through the design of the one-way valve 30, when the first movable frame 15 reciprocates to pressurize, the methanol can be prevented from flowing back to the inside of the first gas conveying pipe 8, and through the cooperation between the first gas conveying pipe 8 and the vaporizer 2, and when the first movable frame 15 contracts and the inner side of the fixed frame 14 is fixed, negative pressure is also generated to draw the methanol in the inside of the vaporizer 2 through the first gas conveying pipe 8, which is more convenient for the conveying of the methanol.

[0045] As shown in Figure 3 , 8 , the spray head 11 is fixed at the bottom of the hot fire head 7, the spray head 11 is in the shape of a bowl, and the middle part of the spray head 11 is hollowed out.

[0046] Through the design of the spray head 11, it can surround the bottom end of the hot fire head 7, so that the sprayed methanol will be uniformly sprayed at the bottom of the hot fire head 7, and the burning when the methanol is ignited will be more uniform, so that the burning will be more sufficient.

[0047] As shown in Figure 8 , the inner wall of the spray head 11 is provided with a plurality of groups of circular holes 13, and the circular holes 13 are towards the middle position.

[0048] Through the design of the circular holes 13, the sprayed methanol will converge towards the middle, and the middle corresponds to the ignition part of the hot fire head 7, so that the ignition quality can be improved, and the insufficient burning of the methanol caused by the poor ignition quality can be avoided.

[0049] As shown in Figure 2 , 3 , the liquid adding pipe 3 is connected with the vaporizer 2, the liquid adding pipe 3 is connected with an external oil tank, and is used for conveying the methanol solution to the inside of the vaporizer 2.

[0050] Through the cooperation between the liquid adding pipe 3 and the vaporizer 2, the methanol solution can be conveyed to the inside of the vaporizer 2, and at the same time the methanol solution is vaporized by the vaporizer 2, at this time the methanol liquid fuel will be converted into gaseous fuel, so that it can be introduced into the engine combustion chamber for combustion.

[0051] Working principle:

[0052] First, when the engine is running, the piston part 6 will move up and down, when the piston part 6 moves up, a pressure will be applied to the connecting head 27, so that the second movable frame 22 can be driven to move along the outer surface of the fixed shaft 21 through the connecting shaft 26, at this time the pawl 25 will be pushed to move through the fixed plate 24, so that the pawl 25 extrudes the ratchet 18, thereby driving the ratchet 18 to rotate along the inner side of the second slot 29, when the ratchet 18 rotates, the fixed part 19 will push the connecting frame 17 to move, at this time the connecting frame 17 will drive the first movable frame 15 to slide along the outer side of the fixed frame 14, and then when a plurality of first movable frames 15 move, the methanol vaporized in the fixed cylinder 9 will be compressed, at this time the pressurized methanol will flow towards the second gas pipe 10, and the preheating pipe 28 will be used to preheat the methanol, then the methanol will be atomized into smaller particles through the atomizer 12, when the atomized methanol enters the inside of the shower head 11, it will be uniformly discharged through the round hole 13, finally the methanol will gather in the middle, and the hot fire head 7 will be used to ignite the methanol, by improving the ignition effect and pressurizing the methanol, the methanol combustion rate is improved, thereby reducing pollution emissions.

[0053] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application being defined by the appended claims and their equivalents.

Claims

1. A spark-ignition methanol engine with low pollutant emissions, comprising four groups of engine cylinders (1), each group of the engine cylinders (1) being equipped with a carburetor (2), the back of the engine cylinders (1) being connected to an exhaust pipe (4), and a liquid filling pipe (3) being installed on the outer side of the carburetor (2), characterized in that: Also includes: A fuel boosting assembly is provided on an engine cylinder (1) for improving the combustion efficiency of methanol; The fuel boosting assembly includes a combustion chamber (5), the combustion chamber (5) is located in the middle of the engine cylinder (1), the interior of the combustion chamber (5) is slidably connected to a piston part (6), the top of the inner cavity of the engine cylinder (1) is fixed with a hot spark plug (7), the interior of the engine cylinder (1) is fixed with a first gas pipe (8), the top of the first gas pipe (8) is connected to a fixed cylinder (9), the top of the fixed cylinder (9) is connected to a second gas pipe (10), a one-way valve (30) is fixed to the top of the inner wall of the fixed cylinder (9), a second notch (29) is opened inside the engine cylinder (1), the interior of the second notch (29) is rotatably connected to a ratchet (18), the inner wall of the ratchet (18) is fixed with a fixing member (19), the interior of the engine cylinder (1) is provided with a second notch (29), and a ratchet (18) is rotatably connected to the inside of the second notch (29). A first notch (20) is provided, a fixed shaft (21) is installed inside the first notch (20), a second movable frame (22) and a return spring (23) are sleeved on the outer surface of the fixed shaft (21), a fixed plate (24) is fixed on one side of the second movable frame (22), a pawl (25) is hinged on the outer side of the fixed plate (24) through a torsion spring, a connecting shaft (26) is fixed on one side of the second movable frame (22), a connecting head (27) is fixed on the outer end of the connecting shaft (26), a plurality of fixed frames (14) are installed on the inner wall of the fixed cylinder (9), the inner wall of the fixed frame (14) is slidably connected to the first movable frame (15), a plurality of sliding grooves (16) are provided on the bottom of the fixed cylinder (9), and a connecting frame (17) is fixed on the bottom of the first movable frame (15).

2. A spark-ignition methanol engine with low pollutant emissions according to claim 1, characterized in that: A preheating pipe (28) is provided inside the second gas pipe (10), an end of the second gas pipe (10) is connected to a spray head (11), and an atomizer (12) is installed between the second gas pipe (10) and the spray head (11).

3. The spark-ignition methanol engine with low pollutant emissions according to claim 1, characterized in that: The end of the pawl (25) is in press contact with the tooth groove of the ratchet wheel (18), and when the pawl (25) rotates, the fixed plate (24) can block one side of the pawl (25).

4. The spark-ignition methanol engine with low pollutant emissions according to claim 1, characterized in that: The return spring (23) is elastically supported between the second movable frame (22) and the first notch (20), the connecting head (27) is in the shape of a right triangle, and the piston part (6) is in extrusion contact with the inclined surface of the connecting head (27).

5. The spark-ignition methanol engine with low pollutant emissions according to claim 1, characterized in that: The connecting frame (17) passes through the slide groove (16) and is slidably connected to the slide groove (16), and the fixing member (19) is in extrusion contact with the connecting frame (17). When the fixing member (19) presses the connecting frame (17), it can drive the first movable frame (15) to slide along the inner cavity of the fixed frame (14).

6. The spark-ignition methanol engine with low pollutant emissions according to claim 1, characterized in that: The one-way valve (30) is in communication with the fixed cylinder (9), and the one-way valve (30) only allows methanol to flow toward the fixed cylinder (9). The first gas pipe (8) is in communication with the vaporizer (2).

7. The spark-ignition methanol engine with low pollutant emissions according to claim 2, characterized in that: The spray head (11) is fixed on the bottom of the hot head (7), and the spray head (11) is bowl-shaped, with the middle of the spray head (11) hollowed out.

8. The spark-ignition methanol engine with low pollutant emissions according to claim 2, characterized in that: The inner wall of the shower head (11) is provided with a plurality of groups of circular holes (13), and the circular holes (13) are oriented toward the middle.

9. The spark-ignition methanol engine with low pollutant emissions according to claim 1, characterized in that: The liquid adding pipe (3) is connected to the vaporizer (2), and the liquid adding pipe (3) is connected to the external oil tank, and is used for conveying the methanol solution to the interior of the vaporizer (2).

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