Spark ignition type methanol engine with low pollutant emission

Abstract

The invention discloses a spark-ignition type methanol engine with low pollutant emission, which relates to the technical field of methanol engines, and comprises four groups of engine cylinders, a vaporizer is mounted on each group of engine cylinders, the back of each engine cylinder is connected with an exhaust pipe, a liquid adding pipe is mounted on the outer side of each vaporizer, and the spark-ignition type methanol engine further comprises a fuel pressurizing assembly, the piston is arranged on an engine cylinder; the fuel pressurizing assembly comprises a combustion chamber, the combustion chamber is located in the middle of the engine cylinder, a piston part is slidably connected into the combustion chamber, a hot fire head is fixed to the top of an inner cavity of the engine cylinder, a first gas conveying pipe is fixed into the engine cylinder, and the top of the first gas conveying pipe communicates with a fixing barrel. And the top of the fixing barrel communicates with a second gas conveying pipe, a one-way valve is fixed to the top of the inner wall of the fixing barrel, a second notch is formed in the engine air cylinder, methanol is pressurized, sufficient combustion can be promoted, and then emission of pollutants is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of methanol engines, in particular to a spark-ignition methanol engine with low pollutant emissions. Background Art

[0002] In heavy industry, large machinery and equipment often require a strong and reliable power source. The structure of a methanol engine is mainly composed of carburetor, cylinder block, starter handle, flywheel, clutch, crankcase and other components. Methanol engines differ from gasoline engines in the way they ignite fuel. Methanol engines do not have spark plugs, but rely on glow plugs to ignite the mixed gas. The glow plug is located directly above the engine cylinder block. A heating wire is installed inside the glow plug. When starting, power is turned on to turn the heating wire red, and the red-hot state of the heating wire is used to ignite the mixed gas. This structure means that the methanol engine does not need a spark plug when igniting the mixed gas, but instead uses a glow plug to do so. In addition, the methanol engine also requires a special fuel tank, exhaust pipe and igniter to start and run.

[0003] A methanol engine is an engine that uses methanol as fuel. Compared with gasoline or diesel engines in traditional heavy industry, a methanol engine has higher combustion efficiency and less pollution emissions. This is because the chemical structure of methanol is different from that of traditional fuels. It can be decomposed into methane and carbon dioxide at low temperatures. However, in actual use, since methanol fuel itself is toxic, the exhaust of engines using methanol as fuel usually contains unburned alcohols, formaldehyde and other harmful gas emissions. The reason why methanol engines emit harmful gases is due to incomplete combustion of methanol. For this reason, a spark-ignition methanol engine with low pollutant emissions is proposed. Summary of the invention

[0004] The purpose of the present invention is to remedy the deficiencies of the prior art and to provide a spark-ignition methanol engine with low pollutant emissions.

[0005] To achieve the above object, the present invention provides the following technical solution: a spark-ignition methanol engine with low pollutant emission, comprising four groups of engine cylinders, each group of engine cylinders is equipped with a carburetor, and the back of the engine cylinder is connected to an exhaust pipe, and the outer side of the carburetor is equipped with a liquid filling pipe, and further comprising:

[0006] A fuel booster assembly, which is mounted on the engine cylinder and is used to improve the combustion efficiency of methanol;

[0007] Wherein, the fuel boosting assembly includes a combustion chamber, which is located in the middle of the engine cylinder, and the interior of the combustion chamber is slidably connected with a piston part, a hot spark plug is fixed on the top of the inner cavity of the engine cylinder, a first air pipe is fixed on the interior of the engine cylinder, the top of the first air pipe is connected to a fixed cylinder, the top of the fixed cylinder is connected to a second air pipe, a one-way valve is fixed on the top of the inner wall of the fixed cylinder, a second notch is opened inside the engine cylinder, a ratchet is rotatably connected inside the second notch, a fixing part is fixed on the inner wall of the ratchet, and the engine A first slot is provided inside the machine cylinder, a fixed shaft is installed inside the first slot, a second movable frame and a return spring are sleeved on the outer surface of the fixed shaft, a fixed plate is fixed to one side of the second movable frame, a pawl is hinged on the outer side of the fixed plate through a torsion spring, a connecting shaft is fixed to one side of the second movable frame, a connecting head is fixed to the outer end of the connecting shaft, a plurality of fixed frames are installed on the inner wall of the fixed cylinder, the inner wall of the fixed frame is slidably connected to the first movable frame, a plurality of sliding grooves are provided at the bottom of the fixed cylinder, and a connecting frame is fixed to the bottom of the first movable frame.

[0008] As a preferred solution of the present invention, a preheating pipe is provided inside the second gas pipe, the end of the second gas pipe is connected to a spray head, and an atomizer is installed between the second gas pipe and the spray head.

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

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

[0011] As a preferred solution of the present invention, the connecting frame passes through the slide slot and is slidably connected to the slide slot, and the fixing member is in compression contact with the connecting frame. When the fixing member presses the connecting frame, it can drive the first movable frame to slide along the inner cavity of the fixed frame.

[0012] As a preferred solution of the present invention, the one-way valve is communicated with the fixed cylinder, the one-way valve only allows methanol to flow toward the fixed cylinder, and the first gas pipe is communicated with the vaporizer.

[0013] As a preferred solution of the present invention, the spray head is fixed at the bottom of the hot plug, the spray head is bowl-shaped, and the middle part of the spray head is hollowed out.

[0014] As a preferred solution of the present invention, the inner wall of the shower head is provided with a plurality of groups of circular holes, and the circular holes are oriented toward the middle.

[0015] As a preferred solution of the present invention, the liquid adding pipe is connected to the vaporizer, and the liquid adding pipe is connected to the external oil tank for conveying the methanol solution to the interior of the vaporizer.

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

[0017] 1. The present invention applies a pressure to the connecting head through the movement of the piston part, so that the second movable frame can be driven to move along the outer surface of the fixed shaft through the connecting shaft. At this time, the pawl will be pushed to move through the fixed plate, so that the pawl squeezes the ratchet, thereby driving the ratchet to rotate along the inner side of the second notch. When the ratchet rotates, it will drive the fixing part to push the connecting frame to move. At this time, the connecting frame will drive the first movable frame to slide along the outer side of the fixed frame. Then, when several groups of first movable frames move, the vaporized methanol inside the fixed cylinder will be compressed. By pressurizing the methanol, it can promote full combustion, and can further reduce the emission of pollutants compared to engines in heavy industry.

[0018] 2. The present invention uses a preheating pipe arranged inside the second gas pipe. In a cold engine state, if methanol cannot ignite and burn quickly after being sprayed into the engine, the unburned methanol will flow down along the cylinder wall, destroying the lubricating oil film on the surface of the cylinder wall, causing poor lubrication between the cylinder and the ring during the startup process and causing a decrease in airtightness, thereby increasing the wear of the cylinder. The methanol is preheated in advance through the preheating pipe and then ignited to improve the combustion rate of the methanol.

[0019] 3. The present invention can increase the pressure of methanol spraying through the design of the atomizer, and atomize methanol into smaller particles. At the same time, the atomized methanol will be evenly discharged through the circular holes when entering the interior of the spray head. At this time, the methanol will gather in the middle and be ignited by the hot spark head. By converging the sprayed methanol toward the part ignited by the hot spark head, the ignition quality can be improved to avoid incomplete combustion of methanol due to poor ignition quality.

[0020] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a schematic cross-sectional structural diagram of the front side of the present invention;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[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 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 6 It is a schematic diagram of the disassembly structure of the fixing 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 It is a schematic diagram of the disassembly structure of the shower 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. hot head; 8. first gas pipe; 9. fixed cylinder; 10. second gas pipe; 11. spray 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. fixing 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 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.

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

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

[0033] The fuel booster assembly includes a combustion chamber 5, which is located in the middle of the engine cylinder 1. A piston part 6 is slidably connected to the combustion chamber 5. A glow plug 7 is fixed to the top of the inner cavity of the engine cylinder 1. A first gas pipe 8 is fixed to the inside of the engine cylinder 1. 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. A ratchet 18 is rotatably connected to the inside of the second notch 29. A fixing member 19 is fixed to the inner wall of the ratchet 18. The inside of the engine cylinder 1 is opened. A first slot 20 is provided, a fixed shaft 21 is installed inside the first slot 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 to 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 to one side of the second movable frame 22, a connecting head 27 is fixed to 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 at the bottom of the fixed cylinder 9, and a connecting frame 17 is 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. When the piston part 6 moves upward, it will apply a pressure 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 squeezes the ratchet 18, thereby driving the ratchet 18 to rotate along the inner side of the second notch 29. When the ratchet 18 rotates, it will drive the fixing part 19 to 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. Then, when several groups of first movable frames 15 move, the vaporized methanol inside the fixed cylinder 9 will be compressed. By pressurizing the methanol, the combustion can be promoted to be complete. The combustion effect of methanol can be improved by pressurization. The density and concentration of methanol can be increased by pressurization, so that it can burn more completely.

[0035] like Figure 3 As shown, a preheating pipe 28 is disposed inside the second gas pipe 10 , a spray head 11 is connected to the end of the second gas pipe 10 , and an atomizer 12 is installed between the second gas pipe 10 and the spray head 11 .

[0036] Through the preheating pipe 28 arranged inside the second gas pipe 10, in the cold engine state, if the methanol cannot ignite and burn quickly after being sprayed into the engine, the unburned methanol will flow down along the cylinder wall, which will destroy the lubricating oil film on the surface of the cylinder wall, resulting in poor lubrication between the cylinder and the ring during the startup process and reduced airtightness, thereby increasing the wear of the cylinder. The methanol is preheated in advance through the preheating pipe 28 and then ignited to improve the combustion rate of the methanol.

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

[0038] Through the design of the pawl 25, when the pawl 25 squeezes the ratchet 18, it will push the ratchet 18 to rotate. When the pawl 25 retreats, the pawl 25 and the fixed plate 24 will cooperate with each other. At this time, the pawl 25 will rotate and cannot drive the ratchet 18 to move. Then, the reciprocating motion of the pawl 25 can be used to control the unidirectional rotation of the ratchet 18.

[0039] like Figure 2 , 3 As shown in FIG. 5 , the return spring 23 is elastically supported between the second movable frame 22 and the first notch 20 , the connecting head 27 is a right triangle, and the piston part 6 is in compression contact with the inclined surface of the connecting head 27 .

[0040] The design of the reset spring 23 allows the second movable frame 22 to have good elastic reset performance. 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 by the second movable frame 22 .

[0041] like Figure 5 , 7 As shown, the connecting frame 17 passes through the slide slot 16 and is slidably connected to the slide slot 16 , and the fixing member 19 is pressed into 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 .

[0042] Through the cooperation between the fixing member 19 and the connecting frame 17, when the fixing member 19 squeezes the connecting frame 17, it will drive the connecting frame 17 to slide along the inner side of the slide groove 16, so that the first movable frame 15 can be driven by the connecting frame 17 to telescopically move along the inner side of the fixed frame 14, so that it can reciprocate to pressurize the methanol.

[0043] like Figure 2 As shown, the one-way valve 30 is communicated with the fixed cylinder 9 , and the one-way valve 30 only allows methanol to flow toward the fixed cylinder 9 . The first gas pipeline 8 is communicated with the vaporizer 2 .

[0044] Through the design of the one-way valve 30, when the first movable frame 15 reciprocates to apply pressure, methanol can be prevented from flowing back into the first gas pipe 8. Moreover, through the cooperation between the first gas pipe 8 and the vaporizer 2, and when the first movable frame 15 contracts and the inner side of the fixed frame 14, negative pressure is generated to extract methanol from the vaporizer 2 through the first gas pipe 8, making it easier to transport methanol.

[0045] like Figure 3 , 8 As shown, the spray head 11 is fixed at the bottom of the hot head 7, the spray head 11 is bowl-shaped, and the middle part of the spray head 11 is hollowed out.

[0046] The design of the spray head 11 can surround the bottom of the glow plug 7, so that the sprayed methanol will be evenly sprayed at the bottom of the glow plug 7, and the methanol will burn more evenly when ignited, making the combustion more complete.

[0047] like Figure 8 As shown, 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.

[0048] Through the design of the circular hole 13, the sprayed methanol will gather towards the middle, and the middle corresponds to the ignition position of the hot plug 7, so the ignition quality can be improved to avoid incomplete combustion of methanol caused by poor ignition quality.

[0049] like Figure 2 , 3 As shown, 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 to transport the methanol solution to the inside of the vaporizer 2 .

[0050] Through the cooperation between the liquid filling pipe 3 and the vaporizer 2, the methanol solution can be transported to the interior of the vaporizer 2, and 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 upward, it will exert a pressure on 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 squeezes the ratchet 18, thereby driving the ratchet 18 to rotate along the inner side of the second notch 29. When the ratchet 18 rotates, it will drive the fixing member 19 to push the connecting frame 17 to move. At this time, the connecting frame 17 will drive the first movable frame 15 to move along the outer surface of the fixed frame 14. When the first movable frames 15 slide sideways and move in several groups, the vaporized methanol inside the fixed cylinder 9 will be compressed. At this time, the pressurized methanol will flow toward the second gas pipe 10 and be preheated by the preheating pipe 28. The methanol will then be atomized into smaller particles by the atomizer 12. The atomized methanol will be evenly discharged through the circular hole 13 when entering the interior of the spray head 11. Finally, the methanol will gather in the middle and be ignited by the hot head 7. By improving the ignition effect and pressurizing the methanol, the combustion rate of the methanol is increased, thereby reducing pollution emissions.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spark-ignition methanol engine with low pollutant emission, comprising four groups of engine cylinders (1), each group of the engine cylinders (1) being equipped with a carburetor (2), and the back of the engine cylinders (1) being connected with an exhaust pipe (4), and the outer side of the carburetor (2) being equipped with a liquid filling pipe (3), characterized in that: Also includes: A fuel boosting assembly, which is arranged on an engine cylinder (1) and is used to improve the combustion efficiency of methanol; The fuel boosting assembly comprises a combustion chamber (5), wherein 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 air supply pipe (8), the top of the first air supply pipe (8) is connected to a fixed cylinder (9), the top of the fixed cylinder (9) is connected to a second air supply pipe (10), a check valve (30) is fixed to the top of the inner wall of the fixed cylinder (9), a second notch (29) is provided inside the engine cylinder (1), a ratchet (18) is rotatably connected inside the second notch (29), a fixing member (19) is fixed to the inner wall of the ratchet (18), and the interior of the engine cylinder (1) is provided with a 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 ratchet (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 with 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 arranged inside the second gas supply pipe (10), an end of the second gas supply pipe (10) is connected to a spray head (11), and an atomizer (12) is installed between the second gas supply pipe (10) and the spray head (11).

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

4. A 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. A 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. A 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 delivery pipe (8) is in communication with the vaporizer (2).

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

8. A 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. A 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 an external oil tank, and is used to transport the methanol solution to the inside of the vaporizer (2).

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