Methanol engine

Abstract

The invention provides a methanol engine. The methanol engine comprises an air inlet channel, an electronic injection assembly, an atomization assembly and a power assembly. The electronic injection assembly is suitable for injecting methanol steam into the air inlet channel. The atomization assembly is partially arranged in the air inlet channel, the atomization assembly is suitable for optimizing the jet flow field of methanol steam jetted by the electronic injection assembly, and non-vaporized methanol liquid drops jetted by the electronic injection assembly drop on the atomization assembly to be heated and vaporized to form methanol steam through an electric heating field. And the mixed gas is mixed with methanol steam injected by the electronic injection assembly and air in the air inlet channel to form combustible mixed gas. The power assembly is arranged at the gas outlet end of the gas inlet channel and suitable for converting chemical energy of the combustible mixed gas into mechanical energy and discharging the first gas through the gas outlet channel.

Description

Technical Field

[0001] The present disclosure relates to the technical field of engines, and in particular to a methanol engine. Background Art

[0002] As a traditional power unit, the engine has high energy output density and widely applicable dynamic performance. The use of methanol fuel in internal combustion engines can improve the ability to absorb renewable energy and is an important way to store and reuse wind, solar and green electricity.

[0003] However, methanol fuel causes engine corrosion and wear in actual use, especially in the piston ring and cylinder liner area. As the engine running time increases, corrosion and wear lead to increased frictional power loss between the piston ring and cylinder liner, which has an adverse effect on engine performance and service life. For intake port injection methanol engines, low-pressure methanol spray is not fully vaporized and evaporates with difficulty. Methanol droplets entering the cylinder can easily cause corrosion and wear of the engine cylinder liner, reducing engine life. Summary of the invention

[0004] In view of this, the present disclosure provides a methanol engine that can reduce corrosion and wear on the engine cylinder liner.

[0005] As one aspect of the embodiments of the present disclosure, a methanol engine is provided, comprising an intake duct, an electric injection assembly, an atomization assembly and a power assembly. The electric injection assembly is suitable for injecting methanol vapor into the intake duct; the atomization assembly is partially arranged in the intake duct, and the atomization assembly is suitable for optimizing the injection flow field of the methanol vapor injected by the electric injection assembly, and through the electric thermal field, the unvaporized methanol droplets injected by the electric injection assembly drip on the atomization assembly to be heated and vaporized to form methanol vapor, so as to be mixed with the methanol vapor injected by the electric injection assembly and the air in the intake duct to form a combustible mixed gas; the power assembly is arranged at the outlet end of the intake duct, and is suitable for converting the chemical energy of the combustible mixed gas into mechanical energy, and discharging the first gas through the exhaust duct.

[0006] According to an embodiment of the present disclosure, the atomization assembly includes a plurality of metal pipes arranged parallel to the injection direction of the methanol, a first electrode, and a second electrode. The plurality of metal pipes arranged parallel to the injection direction of the methanol are installed in the air inlet; the first electrode is arranged at one end of the plurality of metal pipes; the second electrode is arranged at the other end of the plurality of metal pipes, and is suitable for cooperating with the first electrode to apply an electric field to the metal pipes, so that the metal pipes are heated to vaporize the methanol droplets dripping on the metal pipes.

[0007] According to an embodiment of the present disclosure, the atomization assembly further includes a temperature sensor and a controller. The temperature sensor is adapted to detect the temperature of the metal pipe; the controller is adapted to control the first electrode and the second electrode to be powered on or off according to the temperature so that the temperature is within a target range.

[0008] According to an embodiment of the present disclosure, the power assembly includes a cylinder, a cylinder liner, and a piston. The cylinder liner is nested inside the cylinder; the piston is located inside the cylinder liner and contacts the cylinder liner to form a seal; wherein the combustible mixed gas burns in the cylinder to generate a second gas, which pushes the piston to slide relative to the cylinder liner to perform work, thereby converting the chemical energy into the mechanical energy.

[0009] According to an embodiment of the present disclosure, the power assembly further includes a battery and a generator. The battery is configured to supply power to the atomization assembly at least during the start-up process of the methanol engine; the generator is installed in the exhaust passage to receive the second gas, convert the kinetic energy provided by the second gas into electrical energy to supply power to the atomization assembly during the operation of the methanol engine, and discharge the first gas having a kinetic energy lower than that of the second gas from the second end of the exhaust passage.

[0010] According to an embodiment of the present disclosure, the controller is further configured to:

[0011] During said startup process:

[0012] Controlling the battery to supply power to the atomization assembly;

[0013] During the operation of the engine:

[0014] Controlling the generator to supply power to the atomization assembly;

[0015] When the power generation of the generator cannot meet the power demand of the atomizer assembly, connecting the battery to supplement the power supply;

[0016] When the power generation of the generator meets the power demand of the atomizer assembly, disconnecting the battery;

[0017] When the power generation of the generator is greater than the power demand of the atomizer assembly and the state of charge of the battery is less than an upper limit value, connecting the battery and charging the battery at the same time; and

[0018] When the power generation of the generator is greater than the power demand of the atomizer assembly and the charge state of the battery is greater than or equal to the upper limit value, the battery is disconnected.

[0019] According to an embodiment of the present disclosure, the EFI assembly includes a tank, a pump body and a nozzle. The tank is suitable for storing methanol fuel; the pump body is suitable for pressurizing the methanol fuel; the nozzle is suitable for injecting the pressurized methanol fuel to form the methanol vapor and injecting it toward the atomizing assembly.

[0020] According to an embodiment of the present disclosure, the methanol engine further comprises an intake valve and an exhaust valve. The intake valve is installed at the intake end of the power assembly; the exhaust valve is installed upstream of the generator in the flow direction of the first gas.

[0021] According to an embodiment of the present disclosure, the material of the metal pipe includes thermoelectric metal material.

[0022] According to an embodiment of the present disclosure, the cross-sectional shape of the metal pipe includes a regular hexagon.

[0023] According to the methanol engine of the embodiment of the present disclosure, by setting an atomization component, the unvaporized methanol droplets sprayed by the electronic injection component are heated and vaporized to form methanol vapor, which is mixed with the methanol vapor sprayed by the electronic injection component and the air in the intake duct to form a combustible mixed gas. Since the methanol fuel is fully vaporized, no methanol liquid film is formed on the surface of the cylinder liner, which reduces the phenomenon that the methanol droplets enter the cylinder and easily cause corrosion and wear of the engine cylinder liner, and helps to improve the combustion efficiency of the methanol fuel and reduce the emission of unburned methanol and exhaust gas. In addition, since the methanol fuel is more fully atomized, the mixer can be burned more fully, and the emission of harmful gases, such as carbon monoxide (CO), hydrocarbons (HC), etc., can be reduced, thereby improving the emission performance of the methanol engine. The methanol engine provided by the present disclosure not only improves the utilization rate of methanol fuel, reduces environmental pollution, but also improves the performance and reliability of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0025] Figure 1 The composition diagram of a methanol engine according to an embodiment of the present disclosure is schematically shown;

[0026] Figure 2 Schematically shows a cross-sectional view of an atomization assembly according to an embodiment of the present disclosure;

[0027] Figure 3 Schematically shows a side view of an atomization assembly according to an embodiment of the present disclosure;

[0028] Figure 4 The diagram schematically shows the distribution of methanol droplets in the cylinder of a methanol engine in the related art;

[0029] Figure 5Schematically shows a methanol droplet distribution diagram in a methanol engine cylinder according to an embodiment of the present disclosure;

[0030] Figure 6 The diagram schematically shows the distribution of the liquid film attached to the cylinder wall in a methanol engine in the related art;

[0031] Figure 7 A schematic diagram showing the distribution of a liquid film attached to a cylinder wall in a methanol engine according to an embodiment of the present disclosure;

[0032] Figure 8 The droplet mass curve of the methanol engine according to the embodiment of the present disclosure and the droplet mass curve of the methanol engine in the related art are schematically shown;

[0033] Fig. 9 The liquid film quality curve of the methanol engine according to the embodiment of the present disclosure and the liquid film quality curve of the methanol engine in the related art are schematically shown.

[0034] The following are the descriptions of the reference numerals:

[0035] 1- Air intake;

[0036] 2-Electro-injection components;

[0037] 21- storage tank;

[0038] 22- pump body;

[0039] 23-nozzle;

[0040] 3-Atomization assembly;

[0041] 31-Metal pipes;

[0042] 32- a first electrode;

[0043] 33- a second electrode;

[0044] 34- Temperature sensor;

[0045] 35-controller;

[0046] 4- Power assembly;

[0047] 41-cylinder;

[0048] 42-cylinder liner;

[0049] 43-piston;

[0050] 44-battery;

[0051] 45-Generator;

[0052] 5- Exhaust duct;

[0053] 6-Intake valve;

[0054] 7-Exhaust valve. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0056] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0057] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0058] When using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, and C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc. When using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted as the meaning of the expression generally understood by those skilled in the art. For example, "a system having at least one of A, B, or C" should include but not be limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.

[0059] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present disclosure.

[0060] Figure 1 The composition diagram of a methanol engine according to an embodiment of the present disclosure is schematically shown.

[0061] As one aspect of the embodiments of the present disclosure, a methanol engine is provided. Figure 1As shown, the methanol engine includes an intake duct 1, an electronic injection assembly 2, an atomizing assembly 3 and a power assembly 4. The electronic injection assembly 2 is suitable for injecting methanol vapor into the intake duct 1. The atomizing assembly 3 is partially arranged in the intake duct 1, and is suitable for optimizing the injection flow field of the methanol vapor injected by the electronic injection assembly 2, and through the electric heat field, the unvaporized methanol droplets injected by the electronic injection assembly 2 drip on the atomizing assembly 3 to be heated and vaporized to form methanol vapor, so as to be mixed with the methanol vapor injected by the electronic injection assembly 2 and the air in the intake duct 1 to form a combustible mixed gas. The power assembly 4 is arranged at the outlet end of the intake duct 1, and is suitable for converting the chemical energy of the combustible mixed gas into mechanical energy, and discharging the first gas through the exhaust duct 5.

[0062] According to the methanol engine of the embodiment of the present disclosure, by setting the atomizing component 3, the unvaporized methanol droplets sprayed by the electronic injection component 2 are heated and vaporized to form methanol vapor, which is mixed with the methanol vapor sprayed by the electronic injection component 2 and the air in the intake passage 1 to form a combustible mixed gas. Since the methanol fuel is fully vaporized, no methanol liquid film is formed on the surface of the cylinder liner 42, which reduces the phenomenon that the methanol droplets enter the cylinder 41 and easily cause corrosion and wear of the engine cylinder liner 42, and helps to improve the combustion efficiency of the methanol fuel and reduce the emission of unburned methanol and exhaust gas. In addition, since the methanol fuel is more fully atomized, the mixer can be burned more fully, and the emission of harmful gases, such as carbon monoxide (CO), hydrocarbons (HC), etc., can be reduced, thereby improving the emission performance of the methanol engine. The methanol engine provided by the present disclosure not only improves the utilization rate of methanol fuel, reduces environmental pollution, but also improves the performance and reliability of the engine.

[0063] Figure 2 A cross-sectional view of an atomization assembly according to an embodiment of the present disclosure is schematically shown. Figure 3 A side view of an atomization assembly according to an embodiment of the present disclosure is schematically shown.

[0064] According to an embodiment of the present disclosure, the atomization assembly 3 includes a plurality of metal pipes 31 arranged in parallel with the injection direction of methanol, a first electrode 32, and a second electrode 33. The plurality of metal pipes 31 arranged in parallel with the injection direction of methanol are installed in the air intake 1, the first electrode 32 is arranged at one end of the plurality of metal pipes 31, and the second electrode 33 is arranged at the other end of the plurality of metal pipes 31, and is suitable for cooperating with the first electrode 32 to apply an electric field to the metal pipe 31, so that the metal pipe 31 is heated to form an electric heating field, and the methanol droplets dripping on the metal pipe 31 are vaporized by the electric heating field.

[0065] According to an embodiment of the present disclosure, one of the first electrode 32 and the second electrode 33 is connected to the positive electrode of the power supply, and the other of the first electrode 32 and the second electrode 33 is connected to the negative electrode of the power supply, so that the metal pipe 31 located between the first electrode 32 and the second electrode 33 converts the electrical energy provided by the first electrode 32 and the second electrode 33 into thermal energy, forming an electric thermal field, so that the temperature of the metal pipe 31 rises, and heat can be quickly transferred to the methanol droplets dripping on the metal pipe 31, thereby accelerating the vaporization process of the methanol droplets.

[0066] According to an embodiment of the present disclosure, the first electrode 32 and the second electrode 33 supply power to the plurality of metal pipes 31 in parallel to ensure that the plurality of metal pipes 31 are heated evenly.

[0067] According to an embodiment of the present disclosure, the material of the metal pipe 31 includes a thermoelectric metal material, for example, it can be any one of bismuth, antimony, lead, tin-based alloy, bismuth-based alloy, etc.

[0068] According to an embodiment of the present disclosure, the cross-sectional shape of the metal pipe 31 includes a regular hexagon. A plurality of metal pipes 31 of a regular hexagon are arranged adjacent to each other to form a structure as shown in FIG. Figure 2 It is understood that two adjacent metal pipes 31 can share a side wall, one side of the side wall serves as the inner wall of one of the metal pipes 31 , and the other side of the side wall serves as the inner wall of the other metal pipe 31 .

[0069] According to the embodiments of the present disclosure, the honeycomb structure is similar to a porous medium, which will generate resistance to the jet flow field of methanol vapor, causing the airflow to accelerate. The accelerated airflow can better break up the methanol droplets, promote the fragmentation and vaporization of the methanol droplets, thereby strengthening the mixing of methanol vapor and air and improving the combustion efficiency and performance of the methanol engine.

[0070] In another alternative embodiment, the cross-section of the metal pipe 31 may also be a circle or other regular polygonal structure, such as a triangle, a square or a regular octagon.

[0071] According to an embodiment of the present disclosure, the atomization assembly 3 further includes a temperature sensor 34 and a controller 35. The temperature sensor 34 is adapted to detect the temperature of the metal pipe 31, and the controller 35 is adapted to control the battery 44 and the generator 45 (described in detail later) to power on or off the first electrode 32 and the second electrode 33 according to the temperature, so that the temperature is within the target range.

[0072] According to the embodiment of the present disclosure, the temperature sensor 34 is capable of detecting the temperature of the metal pipe 31 in real time. The controller 35 can control the power supply status of the first electrode 32 and the second electrode 33 according to the temperature detected by the stable sensor, thereby ensuring that the metal pipe 31 is within the optimal operating temperature range, preventing fatigue and damage of the metal pipe 31, and reducing failures and damage caused by excessively high or low temperatures, thereby reducing maintenance costs.

[0073] According to an embodiment of the present disclosure, the power assembly 4 includes a cylinder 41, a cylinder liner 42 and a piston 43. The cylinder liner 42 is nested inside the cylinder 41, and the piston 43 is located inside the cylinder liner 42 and contacts the cylinder liner 42 to form a seal. The combustible mixed gas burns in the cylinder 41 to generate a second gas, which pushes the piston 43 to slide relative to the cylinder liner 42 to do work, converting chemical energy into mechanical energy.

[0074] According to an embodiment of the present disclosure, the power assembly 4 further includes a battery 44 and a generator 45. The battery 44 is configured to power the atomization assembly 3 at least during the start-up process of the methanol engine. The generator 45 is installed in the exhaust passage 5 to receive the second gas, convert the kinetic energy provided by the second gas into electrical energy to power the atomization assembly 3 during the operation of the methanol engine, and discharge the first gas having a kinetic energy lower than that of the second gas from the second end of the exhaust passage 5.

[0075] According to the embodiment of the present disclosure, the battery 44 provides electric energy to the atomizing assembly 3 during the engine starting process, ensuring the vaporization of methanol fuel during the engine starting process to form a combustible mixture, thereby supporting the smooth starting of the engine. When the engine is running, the generator 45 converts the kinetic energy in the exhaust pipe into electric energy to supply power to the atomizing assembly 3, realizing the multi-level utilization of energy, improving the energy utilization efficiency, and thus improving the environmental protection.

[0076] In an exemplary embodiment, the generator 45 may be a turbine generator.

[0077] According to an embodiment of the present disclosure, the controller 35 is further configured to: during the startup process, control the battery 44 to supply power to the atomizer assembly 3. During the operation of the engine, control the generator 45 to supply power to the atomizer assembly 3; when the power generation of the generator 45 cannot meet the power demand of the atomizer assembly 3, connect the battery 44 to supplement the power supply; when the power generation of the generator 45 meets the power demand of the atomizer assembly 3, disconnect the battery 44; when the power generation of the generator 45 is greater than the power demand of the atomizer assembly 3, and the state of charge of the battery 44 is less than the upper limit, connect the battery 44 and charge the battery 44 at the same time; when the power generation of the generator 45 is greater than the power demand of the atomizer assembly 3 and the state of charge of the battery 44 is greater than or equal to the upper limit, disconnect the battery 44.

[0078] According to the embodiment of the present disclosure, by automatically switching the power supply mode through the controller 35, sufficient electric energy can be flexibly provided to the atomization component 3 according to the actual power generation of the generator 45 and the storage capacity of the battery 44, thereby ensuring the stable operation of the engine, reducing energy waste, and improving the overall efficiency of the system.

[0079] According to an embodiment of the present disclosure, the EFI assembly 2 includes a tank 21, a pump body 22 and a nozzle 23. The tank 21 is suitable for storing methanol fuel, the pump body 22 is suitable for pressurizing the methanol fuel, and the nozzle 23 is suitable for injecting the pressurized methanol fuel to form methanol vapor and injecting it toward the atomization assembly 3.

[0080] According to an embodiment of the present disclosure, the methanol engine further comprises an intake valve 6 and an exhaust valve 7. The intake valve 6 is installed at the intake end of the power assembly 4, and the exhaust valve 7 is installed upstream of the generator 45 in the flow direction of the first gas.

[0081] According to the embodiment of the present disclosure, during the intake process, high-pressure air flows from the intake duct 1 to the cylinder 41, the methanol fuel in the storage tank 21 is pressurized by the pump body 22, and sprayed to the atomization component 3 through the nozzle 23, and the unvaporized methanol droplets are quickly vaporized after contacting the high-temperature atomization component 3. At the same time, the atomization component 3 with the hexagonal honeycomb structure also changes the flow field of the methanol vapor, thereby strengthening the mixing of the vaporized methanol and the air.

[0082] The intake valve 6 opens, and the combustible mixture enters the cylinder 41. Since the methanol is fully vaporized, no methanol liquid film is formed on the surface of the cylinder liner 42, thereby reducing the corrosion of the cylinder liner 42 by methanol.

[0083] After the combustible mixture does work, the intake valve 6 is closed and the exhaust valve 7 is opened, and the high-temperature, high-pressure, and high-speed exhaust gas acts on the generator 45 through the exhaust duct and transmits the electrical energy to the controller 35 for distribution.

[0084] Figure 4 The diagram schematically shows the distribution of methanol droplets in the cylinder of a methanol engine in the related art. Figure 5 The figure schematically shows the distribution diagram of methanol droplets in the cylinder of a methanol engine according to an embodiment of the present disclosure. Figure 6 The diagram schematically shows the distribution of the liquid film attached to the cylinder wall in a methanol engine in the related art. Figure 7 The diagram schematically shows the distribution of the liquid film attached to the cylinder wall in the methanol engine according to the embodiment of the present disclosure.

[0085] According to the methanol engine of the embodiment of the present disclosure, Figures 4 to 7As shown, the atomization component 3 improves the atomization and evaporation effect of the low-pressure methanol spray in the intake passage 1, and reduces the amount of methanol droplets entering the engine cylinder 41 after the intake valve 6 is opened and the amount of liquid film attached to the wall of the cylinder 41 under the action of the air flow in the cylinder. On the one hand, the dilution effect of liquid methanol on the lubricating oil film is weakened, and on the other hand, the corrosion effect of the incomplete combustion products of the methanol attached to the wall on the wall of the cylinder 41 during the combustion process is alleviated. The phenomenon of severe corrosion and wear of the cylinder liner 42 of the methanol engine caused by the difficulty of methanol evaporation can be improved, and the service life of the engine can be extended.

[0086] Figure 8 The droplet mass curve of the methanol engine according to the embodiment of the present disclosure and the droplet mass curve of the methanol engine in the related art are schematically shown.

[0087] Figure 8 The horizontal axis represents the crankshaft angle, and the vertical axis represents the dripping mass. Figure 8 It can be seen that the methanol engine provided in the embodiment of the present disclosure reduces the droplet mass by 42.6% when the methanol engine is operating normally, compared with the methanol engine in the related art.

[0088] Fig. 9 The liquid film quality curve of the methanol engine according to the embodiment of the present disclosure and the liquid film quality curve of the methanol engine in the related art are schematically shown.

[0089] Fig. 9 The horizontal axis represents the crankshaft angle, and the vertical axis represents the liquid film mass. Fig. 9 It can be seen that the methanol engine provided by the embodiment of the present disclosure reduces the liquid film mass by 33.9% when the methanol engine is operating normally, compared with the methanol engine in the related art.

[0090] According to the methanol engine of the embodiment of the present disclosure, by providing an atomizing component 3, the unvaporized methanol droplets sprayed by the electronic injection component 2 are heated and vaporized to form methanol vapor, which is mixed with the methanol vapor sprayed by the electronic injection component 2 and the air in the intake duct 1 to form a combustible mixture. This can reduce the mass of droplets and liquid film entering the cylinder 41, and reduce the phenomenon that the methanol droplets entering the cylinder 41 easily cause corrosion and wear of the engine cylinder liner 42.

[0091] The embodiments of the present disclosure are described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure. Although the embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage. The scope of the present disclosure is defined by the attached claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make a variety of substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A methanol engine, characterized in that: include: Air intake; an electronic injection assembly, adapted to inject methanol vapor into the intake duct; an atomizing assembly, partly disposed in the intake passage, the atomizing assembly being adapted to optimize the injection flow field of the methanol vapor injected by the electro-injection assembly, and causing the unvaporized methanol droplets injected by the electro-injection assembly to drop on the atomizing assembly through an electro-thermal field to be heated and vaporized to form methanol vapor, so as to be mixed with the methanol vapor injected by the electro-injection assembly and the air in the intake passage to form a combustible mixed gas; as well as The power assembly is arranged at the outlet end of the intake passage, and is suitable for converting the chemical energy of the combustible mixed gas into mechanical energy and discharging the first gas through the exhaust passage.

2. The methanol engine according to claim 1, characterized in that: The atomizing assembly comprises: A plurality of metal pipes arranged parallel to the injection direction of the methanol are installed in the air intake duct; A first electrode is disposed at one end of the plurality of metal pipes; and The second electrode is arranged at the other end of the plurality of metal pipes and is suitable for cooperating with the first electrode to apply an electric field to the metal pipes so as to heat the metal pipes and vaporize the methanol droplets dripping on the metal pipes.

3. The methanol engine according to claim 2, characterized in that: The atomizing assembly further comprises: A temperature sensor, adapted to detect the temperature of the metal pipe; The controller is adapted to control the first electrode and the second electrode to be powered on or off according to the temperature so that the temperature is within a target range.

4. The methanol engine according to claim 2 or 3, characterized in that: The power assembly comprises: cylinder; A cylinder liner, nested inside the cylinder; and A piston is located inside the cylinder sleeve and contacts with the cylinder sleeve to form a seal; The combustible mixed gas burns in the cylinder to generate a second gas, which pushes the piston to slide relative to the cylinder liner to perform work, thereby converting the chemical energy into the mechanical energy.

5. The methanol engine according to claim 3, characterized in that: The power assembly also includes: a battery configured to power the atomization assembly at least during the start-up process of the methanol engine; A generator is installed in the exhaust duct to receive the second gas, convert the kinetic energy provided by the second gas into electrical energy to power the atomization assembly during the operation of the methanol engine, and discharge the first gas having a kinetic energy lower than that of the second gas from the second end of the exhaust duct.

6. The methanol engine according to claim 5, characterized in that: The controller is further configured to: During said startup process: Controlling the battery to supply power to the atomization assembly; During the operation of the engine: Controlling the generator to supply power to the atomization assembly; When the power generation of the generator cannot meet the power demand of the atomizer assembly, connecting the battery to supplement the power supply; When the power generation of the generator meets the power demand of the atomizer assembly, disconnecting the battery; When the power generation of the generator is greater than the power demand of the atomizer assembly and the state of charge of the battery is less than an upper limit value, the battery is connected and charged at the same time; as well as When the power generation of the generator is greater than the power demand of the atomizer assembly and the charge state of the battery is greater than or equal to the upper limit value, the battery is disconnected.

7. The methanol engine according to claim 1, characterized in that: The electronic injection assembly comprises: A storage tank suitable for storing methanol fuel; A pump body, adapted to pressurize the methanol fuel; and The nozzle is adapted to inject the pressurized methanol fuel to form the methanol vapor and inject it toward the atomizing assembly.

8. The methanol engine according to claim 1, characterized in that: Also includes: An intake valve, mounted at the intake end of the power assembly; An exhaust valve is installed upstream of the generator in the flow direction of the first gas.

9. The methanol engine according to claim 2, characterized in that: The material of the metal pipe includes thermoelectric metal material.

10. The methanol engine according to claim 2, characterized in that: The cross-sectional shape of the metal pipe includes a regular hexagon.

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