A method and device for on-line hydrogen production by methanol combustion for vehicle

Abstract

This invention relates to a method and apparatus for online methanol-to-hydrogen mixing and combustion in vehicles, belonging to the field of new energy and automotive fuel technology. The method involves pumping methanol from a methanol fuel tank using an electric methanol pump, filtering impurities through a filter, and then splitting it into two outputs: one output is sent through a pipeline to a high-pressure fuel injector, where it is atomized into methanol via the injector nozzle; the other output is sent through a pipeline to an electrically heated catalytic cracking reactor, where it undergoes catalytic cracking to produce hydrogen. The atomized methanol and the hydrogen obtained from the catalytic cracking are mixed in a predetermined ratio in the intake manifold of an internal combustion engine to form a homogeneous methanol-hydrogen-oxygen mixture, which is then fed into the engine cylinder for combustion. This invention overcomes the bottleneck of traditional methanol fuel substitution, providing a new solution for achieving a higher gasoline substitution rate, and is of great significance for promoting energy structure transformation and reducing carbon emissions.

Description

Technical Field

[0001] This invention relates to a method and equipment for online methanol-to-hydrogen co-combustion in vehicles, belonging to the field of new energy and automotive fuel technology. Background Technology

[0002] Methanol, as a clean and renewable liquid fuel, boasts advantages such as wide availability, low production costs, and safe storage and transportation, showing great potential in the field of alternative fuels for internal combustion engines. Compared with traditional gasoline and diesel, methanol has a higher octane number and a wider combustion limit, which is conducive to achieving efficient and clean combustion. However, methanol fuel also faces several technical bottlenecks in practical applications: 1. Difficult cold start: Methanol has a high latent heat of vaporization (approximately 1101 kJ / kg, 3.3 times that of gasoline), leading to severe heat absorption during vaporization at low temperatures and poor mixture formation quality, resulting in difficulty in cold starts. 2. Combustion speed and stability issues: Under low-load conditions, alcohol fuels suffer from low operating temperatures and slow flame propagation speeds, which may lead to increased cycle fluctuations or even misfires, while simultaneously generating large amounts of unburned methanol and formaldehyde emissions. 3. Atomization characteristic challenges: The physicochemical properties of methanol (such as surface tension and viscosity) differ from those of traditional petroleum fuels, significantly affecting its atomization characteristics.

[0003] Hydrogen, as a clean fuel, possesses extremely high flame propagation speed (5-10 times that of gasoline), extremely low ignition energy (only 0.02 mJ), and a wide lean-burn limit. Introducing hydrogen into internal combustion engines can significantly accelerate the combustion process, improve thermal efficiency, and reduce carbon-based emissions. However, pure hydrogen internal combustion engines face challenges such as low volumetric efficiency, storage and transportation difficulties, and abnormal combustion tendencies. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and equipment for online methanol-hydrogen co-combustion in vehicles, thereby overcoming the shortcomings of existing methanol fuel and pure hydrogen internal combustion engines.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A method for online methanol-hydrogen production and combustion in vehicles includes the following steps: S1. Methanol in the methanol fuel tank is pumped out by an electric methanol pump, and after impurities are filtered out by a filter, it is split into two outputs: one is sent to the high-pressure injector through a pipeline, and the other is sent to the electrically heated catalytic cracking reactor through a pipeline. S2. Methanol sent to the high-pressure injector is atomized through the injector nozzle; methanol sent to the electrically heated catalytic cracking reactor is cracked by catalytic reaction to produce hydrogen. S3. Atomized methanol and hydrogen obtained from catalytic cracking are mixed in a predetermined ratio in the intake manifold of the internal combustion engine to form a uniformly mixed methanol-hydrogen-oxygen mixture, which is then sent into the cylinder of the internal combustion engine to participate in combustion.

[0006] As a preferred embodiment, in step S1, the methanol flow rate to the high-pressure injector and the electrically heated catalytic cracking reactor is allocated by an intelligent control unit.

[0007] As a preferred embodiment, in step S3, the intelligent control unit continuously monitors the engine operating parameters and outputs control commands to the high-pressure injector and the electrically heated catalytic cracking reactor according to the engine status. This enables closed-loop feedback control of the air-fuel ratio and fuel distribution, precisely adjusting the injection quantity and cracked gas quantity to achieve on-demand supply of atomized methanol and cracked hydrogen.

[0008] As a preferred embodiment, during the engine cold start phase, the intelligent control unit detects a low-temperature signal and sends a control command to activate the electric heating system of the electrically heated catalytic cracking reactor to rapidly preheat the catalyst. Simultaneously, it sends a control command to activate the high-pressure injector to inject a small amount of methanol, forming atomized methanol. When the temperature of the electrically heated catalytic cracking reactor reaches approximately 220°C, the intelligent control unit sends a control command to open the methanol electronically controlled valve leading to the reactor. A small amount of methanol is then cracked under the catalytic action of the catalyst to generate hydrogen-rich gas. This hydrogen-rich gas mixes with the atomized methanol generated by the high-pressure injector to form an easily ignitable mixture. When the engine is idling / low load, the intelligent control unit sends control commands to the electrically heated catalytic cracking reactor to increase the proportion of cracked hydrogen. By utilizing the lean-burn characteristics of hydrogen, stable combustion is achieved, reducing cycle fluctuations and formaldehyde generation. During the engine's medium load / economy range, the intelligent control unit sends control commands to the high-pressure injector and the electrically heated catalytic cracking reactor to control the output ratio of atomized methanol and cracked hydrogen, thereby achieving high thermal efficiency. When the engine is under high load / full load, the intelligent control unit sends control commands to the high-pressure injector and the electrically heated catalytic cracking reactor to reduce the proportion of hydrogen produced by cracking and increase the proportion of atomized methanol, so that most of the methanol is used for direct atomization injection.

[0009] A vehicle-mounted methanol-to-hydrogen mixing and combustion device includes a methanol supply unit, a methanol atomization unit, an online cracking hydrogen production unit, a blending and supply unit, and an intelligent control unit. The methanol supply unit includes a methanol fuel tank, an electric methanol pump, a filter, and a three-way distribution valve. One outlet of the three-way distribution valve is connected to the high-pressure common rail injector of the methanol atomization unit via a pipeline, and the other outlet is connected to the online cracking hydrogen production unit via an electronically controlled proportional valve. Flow regulating valves controlled by an intelligent control unit are respectively installed on the two pipelines of the three-way distribution valve to distribute the methanol flow as needed.

[0010] The methanol atomization unit includes a high-pressure common rail injector installed on the intake manifold; The online cracking hydrogen production unit includes an electrically heated catalytic cracking reactor; the outlet of the electrically heated catalytic cracking reactor is directly connected to the inlet of the blending and supply unit through a pipeline and a hydrogen control valve. The mixing and supply unit includes an intake mixing zone, a hydrogen control valve, and a throttle valve; The intelligent control unit is electrically connected to the high-pressure common rail injector, the electrically heated catalytic cracking reactor, and the engine status sensor group; it is used to monitor the engine speed, temperature, and load status.

[0011] As a preferred embodiment, the methanol atomization unit further includes an ultrasonic atomization generator, which is electrically connected to the intelligent control unit.

[0012] As a preferred embodiment, the electrically heated catalytic cracking reactor includes a shell, a gas outlet, catalytic electrode terminals, a catalytic section, a common electrode terminal for atomization catalytic heating, a high-temperature atomization section, a heating electrode terminal for the atomization section, a methanol injector, and a methanol input pipe; the catalytic electrode terminals are connected to the catalytic section; the heating electrode terminals for the atomization section are connected to the high-temperature atomization section; the common electrode terminal for atomization catalytic heating is connected at the junction of the catalytic section and the high-temperature atomization section; the methanol input pipe is connected to the methanol injector, the methanol injector is connected to the high-temperature atomization section, the high-temperature atomization section is connected to the catalytic section, and the gas outlet is connected to the catalytic section.

[0013] As a preferred embodiment, a copper-based catalyst is placed inside the catalytic section, and a rare earth heating film is present on the surface of the catalytic section; the interior of the high-temperature atomization section consists of high-temperature ceramic particles, and the surface of the high-temperature atomization section is also covered with a rare earth heating film.

[0014] As a preferred embodiment, the system also includes a methanol injector housing, which is connected to the outside of the methanol injector.

[0015] As a preferred embodiment, the catalytic section and the high-temperature atomization section are high-temperature resistant tubes with rare earth heating films formed on their surfaces using vapor deposition technology. The catalytic section and the high-temperature atomization section can be two sections on a single tube, or they can be assembled from two separate tubes.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following characteristics: This technology solves the cold-start problem of methanol engines: During cold starts, the control system prioritizes using battery power or an auxiliary heater to rapidly preheat the cracking reactor, quickly bringing it to the ignition temperature. The resulting small amount of hydrogen-rich cracked gas mixes with atomized methanol, and by utilizing the low ignition energy of hydrogen, ignition reliability is greatly improved, ensuring reliable engine start-up without auxiliary fuel in low-temperature environments. Even in extremely cold environments of -20°C, it ensures smooth starting, solving the global problem of difficult low-temperature starting for ordinary methanol engines.

[0017] Performance optimization is achieved across the entire operating range: the intelligent control unit intelligently allocates the destination of methanol (direct atomization or cracking to produce hydrogen) and the mixing ratio of the two based on the engine's real-time operating parameters, precisely adjusts the hydrogen fuel ratio, ensures the best combustion effect, and keeps the engine working in the optimal state at all times.

[0018] Improve energy efficiency: By precisely controlling the fuel and optimizing the combustion process, energy efficiency is maximized. The thermal efficiency of electric heating can reach over 99%, with no power decay for 10,000 hours.

[0019] Significantly improved emissions performance: The addition of hydrogen greatly promotes the combustion speed and completeness of methanol. Through the combustion-promoting effect of hydrogen, methanol burns more completely and quickly. Tests show that this technology can significantly reduce emissions of harmful substances such as nitrogen oxides (NOx), particulate matter (PM), unburned hydrocarbons (HC), and formaldehyde (CH2O). Direct use of methanol as a clean fuel reduces dependence on fossil fuels.

[0020] System simplification and improved reliability: Hydrogen is produced and consumed online without the need to store high-pressure hydrogen. By eliminating the water-mixing reaction unit, complex water management and corrosion problems are avoided. The exhaust gas heating and storage devices are eliminated, and the temperature control accuracy reaches ±1.5℃ through precise temperature control, avoiding the risk of local overheating. The system structure is more compact, the complexity is reduced by 40%, the cost is reduced, the response is faster, and the safety and reliability are higher.

[0021] 6. Significantly reduced vehicle operating costs: This invention can replace traditional gasoline, allowing the methanol fuel to replace gasoline in a ratio of up to 1:1. It enables traditional fuel vehicles to "upgrade" seamlessly to use methanol as fuel, significantly reducing fuel costs by more than 50%; fuel consumption is significantly reduced, achieving a fuel saving rate of 20%-50%; it has the advantages of clean emissions, economic energy saving, strong power, and low noise, saving money compared to gasoline vehicles and being more worry-free than electric vehicles, saving up to 65% in energy consumption costs, making the cost per kilometer as low as 1 cent.

[0022] 7. Enhanced Power: The flame propagation speed of hydrogen is 8 times faster than that of gasoline. Using this invention can increase the overall thermal efficiency by 25%-40%, greatly improving energy utilization efficiency.

[0023] The core advantage of this invention lies in the fact that it does not simply physically mix methanol and gasoline, but creatively generates high-quality hydrogen—a fuel that compensates for the inherent defects of methanol—through an "online hydrogen production" chemical conversion process. This synergistic combustion mode of "methanol + hydrogen," combined with intelligent control under all operating conditions, can significantly overcome the bottleneck of traditional methanol fuel substitution, providing a technically feasible and economically reasonable solution for achieving a higher gasoline substitution rate (and even ultimately replacing gasoline). This is of great significance for promoting energy structure transformation and reducing carbon emissions.

[0024] This invention is particularly suitable for solving the problems of cold start difficulty, slow combustion speed, low load instability and emissions when methanol is used as fuel for internal combustion engines, while improving reliability through system simplification. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the external structure of the electrically heated catalytic cracking reactor of the present invention; Figure 3 This is a side view of the electrically heated catalytic cracking reactor of the present invention; Figure 4 This is a schematic diagram of the internal structure of the electrically heated catalytic cracking reactor of the present invention. Detailed Implementation

[0026] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0027] Example 1: As Figure 1 As shown, an online methanol-to-hydrogen mixing and combustion device for vehicles mainly includes a methanol supply unit 1, a methanol atomization unit 2, an online cracking hydrogen production unit 3, a blending and supply unit 4, and an intelligent control unit 5. 1. Methanol Supply Unit This unit includes a methanol fuel tank 6, an electric methanol pump 7, a filter 8, and a three-way distribution valve 9. Methanol in the fuel tank 6 is pumped out by the electric methanol pump 7, filtered for impurities by the filter 8, and then flows through the three-way distribution valve 9 to the high-pressure common rail injector and the linear cracking hydrogen production unit 3. The entire system uses only methanol fuel and requires no water or other auxiliary fuels.

[0028] The outlet of the three-way distribution valve 9 is divided into two branches: the first outlet is connected to the high-pressure common rail injector of the methanol atomization unit 2 through a pipeline, and the other outlet is connected to the online cracking hydrogen production unit 3 through an electronically controlled proportional valve; flow regulating valves (such as methanol nozzles and electronically controlled flow valves) precisely controlled by the intelligent control unit 5 are respectively installed on the two pipelines of the three-way distribution valve 9 to distribute the methanol flow as needed.

[0029] 2. Methanol atomization unit The methanol atomization unit 2 includes a high-pressure common rail injector 10 installed on the intake manifold. This unit is responsible for finely atomizing the liquid methanol in the first branch. Its key component is the high-pressure common rail injector, which sprays methanol into the intake manifold or cylinder in the form of tiny droplets. To further improve the cold start atomization effect, an ultrasonic atomizing generator 14 can be installed downstream of the high-pressure common rail injector. The ultrasonic atomizing generator 14 is electrically connected to the intelligent control unit 5 and can further break up the methanol droplets to form micron-sized mist that is easier to burn.

[0030] 3. Online cracking hydrogen production unit This is one of the core innovations of this invention. The unit includes a compact electrically heated catalytic cracking reactor 11. The reactor 11 contains a catalyst bed, and its outlet is directly connected to the inlet of the blending and supply unit 4 via a pipeline and a hydrogen control valve, without any intermediate gas storage or buffer device, achieving "on-demand" production of the cracked gas. It is filled with a highly active and selective dedicated catalyst (e.g., a copper-zinc based catalyst). This invention employs pure cracking technology, eliminating the need for water mixing, simplifying the system structure, and avoiding complex water management and water balance control issues. The reactor is no longer integrated into the exhaust system and does not rely on waste heat from the exhaust gas. Instead, it uses electric heating, with the heating power controlled by the ECU, ensuring rapid heating and precise temperature control of the reactor.

[0031] Methanol undergoes the following reaction in the presence of a catalyst: Main reaction: CH3OH → CO + 2H2 - 90.7 kJ / mol (endothermic) The generated cracked gas mainly consists of hydrogen (H2) and carbon monoxide (CO). The cracking reactor is directly integrated into the engine system, eliminating the need for additional exhaust gas heating or storage devices, thus enabling the immediate production and consumption of cracked gas and improving system response speed and safety.

[0032] like Figures 2-4As shown, the electrically heated catalytic cracking reactor 11 includes a shell 15, an outlet 16, a catalytic electrode terminal 17, a catalytic section 18, a common electrode terminal for atomization catalytic heating 19, a high-temperature atomization section 20, a heating electrode terminal 21 for the atomization section, a methanol injector 22, and a methanol input pipe 23. The catalytic electrode terminal 17 is connected to the catalytic section 18; the heating electrode terminal 21 for the atomization section is connected to the high-temperature atomization section 20; the common electrode terminal 19 for atomization catalytic heating 19 is connected at the junction of the catalytic section 18 and the high-temperature atomization section 20; the methanol input pipe 23 is connected to the methanol injector 22, the methanol injector 22 is connected to the high-temperature atomization section 20, the high-temperature atomization section 20 is connected to the catalytic section 18, and the outlet 16 is connected to the catalytic section 18. A copper-based catalyst is placed inside the catalytic section 18, and a rare-earth heating film is present on the surface of the catalytic section 18; the high-temperature atomization section 20 contains high-temperature ceramic particles, and a rare-earth heating film is present on its surface. The catalytic section 18 and the high-temperature atomization section 20 are high-temperature resistant tubes, and rare earth heating films are formed on their surfaces using vapor deposition technology; the catalytic section 18 and the high-temperature atomization section 20 are two sections on a whole tube; or they can be assembled from two separate tubes.

[0033] It also includes a methanol injector housing 24, which is connected to the outside of the methanol injector 22.

[0034] 4. Blending and Supply Unit The blending and supply unit 4 includes an intake mixing zone 12, a hydrogen control valve, and a throttle valve. This unit mixes atomized methanol and cracked gas in a predetermined ratio to form a uniform air (methanol-hydrogen-oxygen) mixture, which is then fed into the cylinder. The mixing method can be intake mixing or in-cylinder direct injection mixing. Because the storage device is eliminated, the cracked gas is directly delivered to the mixing point, reducing delays and safety hazards.

[0035] 5. Intelligent control unit The intelligent control unit (ECU) is the brain of the system. It receives feedback signals from the engine status sensor group and collects signals from the coolant temperature sensor (determining cold start conditions), throttle position sensor, intake air pressure sensor (determining engine load), crankshaft speed sensor, and other sensors. Based on this real-time data, the ECU outputs pulse control commands to each actuator through an internally preset optimization algorithm MAP diagram. This controls the opening time and timing of the atomizing injector, the opening degree of the methanol flow valve leading to the cracking reactor, the opening degree of the hydrogen control valve, and the heating power of the cracking reactor and the operation of the ultrasonic atomizer, achieving precise on-demand distribution of atomized methanol and cracked hydrogen. The intelligent control unit 5 is electrically connected to the high-pressure common rail injector 10, the electrically heated catalytic cracking reactor 11, and the engine status sensor group 13; it is used to monitor the engine's speed, temperature, and load status.

[0036] The typical workflow of the system of this invention is as follows, highlighting the simplified features: 1. Cold start phase (water temperature below 10℃): The ECU detects a low-temperature signal and activates the electric heating system of the cracking reactor to rapidly preheat the catalyst. Simultaneously, the ultrasonic atomizer can be turned on. The ECU also controls the cold-start injector to inject a small amount of methanol.

[0037] When the reactor temperature reaches approximately 220°C, the ECU opens the methanol electronic control valve leading to the reactor, and a small amount of methanol is cracked to generate hydrogen-rich gas. This gas mixes with atomized methanol to form an easily ignitable mixture. Utilizing the low ignition energy of hydrogen, the spark plugs ignite successfully, and the engine starts.

[0038] 2. Normal operating conditions (various loads): Idle / Low Load: The ECU appropriately increases the proportion of cracked gas, utilizing the lean-burn characteristics of hydrogen to achieve stable combustion, reduce cycle fluctuations and formaldehyde generation.

[0039] Medium load / economic range: The ECU seeks the optimal ratio to achieve the highest thermal efficiency.

[0040] High load / full load: To ensure maximum power output, the ECU will reduce the proportion of hydrogen produced by cracking and use most of the methanol for direct atomization injection.

[0041] 3. Variable operating conditions and closed-loop correction: Throughout the operation, the ECU continuously monitors engine operating parameters, performs closed-loop feedback control on the air-fuel ratio and fuel distribution, and finely adjusts the injection quantity and the amount of pyrolysis gas. Because there is no buffering effect from the gas receiver, the ECU's control over the pyrolysis reactor needs to be faster and more precise to cope with sudden changes in engine operating conditions.

[0042] 5.3 Key Parameters and Performance Indicators (Example) Through the above-described system configuration and intelligent control method, this invention successfully integrates methanol atomization technology with online cracking hydrogen production technology. By eliminating water mixing reaction, exhaust gas heating and storage devices, the system structure is significantly simplified, and reliability, response speed and safety are improved, forming a new internal combustion technology for internal combustion engines that is efficient, clean and adaptable to all operating conditions.

[0043] The table below clearly illustrates how this technology improves the substitution ratio through multiple mechanisms.

[0044] Example 2: In this example, the ultrasonic atomizer 14 is not installed. Methanol is atomized only by the high-pressure common rail injector 10. The rest is the same as in Example 1.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for online methanol-to-hydrogen co-combustion in vehicles, characterized in that, Includes the following steps: S1. Methanol in the methanol fuel tank is pumped out by an electric methanol pump, and after impurities are filtered out by a filter, it is split into two outputs: one is sent to the high-pressure injector through a pipeline, and the other is sent to the electrically heated catalytic cracking reactor through a pipeline. S2. Methanol sent to the high-pressure injector is atomized through the injector nozzle; methanol sent to the electrically heated catalytic cracking reactor is cracked by catalytic reaction to produce hydrogen. S3. The atomized methanol and the hydrogen obtained from the catalytic cracking are mixed in proportion in the intake manifold of the internal combustion engine to form a uniformly mixed methanol-hydrogen-oxygen mixture, which is then sent into the cylinder of the internal combustion engine to participate in combustion.

2. The method for online methanol-to-hydrogen co-combustion in vehicles according to claim 1, characterized in that: In step S1, the methanol flow rate to the high-pressure injector and the electrically heated catalytic cracking reactor is allocated by the intelligent control unit.

3. The method for online methanol-to-hydrogen co-combustion in vehicles according to claim 1, characterized in that: In step S3, the intelligent control unit continuously monitors the engine operating parameters and outputs control commands to the high-pressure injector and the electrically heated catalytic cracking reactor according to the engine status. Closed-loop feedback control is performed on the air-fuel ratio and fuel distribution to precisely adjust the injection quantity and cracked gas quantity, thereby achieving on-demand supply of atomized methanol and cracked hydrogen.

4. The method for online methanol-hydrogen production and combustion in vehicles according to claim 3, characterized in that: During the engine cold start phase, the intelligent control unit detects a low-temperature signal and sends a control command to activate the electric heating system of the electrically heated catalytic cracking reactor to rapidly preheat the catalyst. Simultaneously, it sends a control command to activate the high-pressure injector to inject a small amount of methanol, forming atomized methanol. When the temperature of the electrically heated catalytic cracking reactor reaches approximately 220°C, the intelligent control unit sends a control command to open the methanol electronically controlled valve leading to the reactor. A small amount of methanol is then cracked under the catalytic action of the catalyst to generate hydrogen-rich gas. This hydrogen-rich gas mixes with the atomized methanol generated by the high-pressure injector to form an easily ignitable mixture. When the engine is idling / low load, the intelligent control unit sends control commands to the electrically heated catalytic cracking reactor to increase the proportion of cracked hydrogen. By utilizing the lean-burn characteristics of hydrogen, stable combustion is achieved, reducing cycle fluctuations and formaldehyde generation. During the engine's medium load / economy range, the intelligent control unit sends control commands to the high-pressure injector and the electrically heated catalytic cracking reactor to control the output ratio of atomized methanol and cracked hydrogen, thereby achieving high thermal efficiency. When the engine is under high load / full load, the intelligent control unit sends control commands to the high-pressure injector and the electrically heated catalytic cracking reactor to reduce the proportion of hydrogen produced by cracking and increase the proportion of atomized methanol, so that most of the methanol is used for direct atomization injection.

5. A vehicle-mounted methanol-to-hydrogen online mixing and combustion device, characterized in that: It includes a methanol supply unit (1), a methanol atomization unit (2), an online cracking hydrogen production unit (3), a blending and supply unit (4), and an intelligent control unit (5). The methanol supply unit (1) includes a methanol fuel tank (6), an electric methanol pump (7), a filter (8), and a three-way distribution valve (9). One outlet of the three-way distribution valve (9) is connected to the high-pressure common rail injector of the methanol atomization unit (2) through a pipeline, and the other outlet is connected to the online cracking hydrogen production unit (3) through an electronically controlled proportional valve. Flow regulating valves controlled by an intelligent control unit (5) are respectively installed on the two pipelines of the three-way distribution valve (9). The methanol atomization unit (2) includes a high-pressure common rail injector (10) installed on the intake pipe; The online cracking hydrogen production unit (3) includes an electrically heated catalytic cracking reactor (11); the outlet of the electrically heated catalytic cracking reactor (11) is directly connected to the inlet of the blending and supply unit (4) through a pipeline and a hydrogen control valve. The mixing and supply unit (4) includes an intake mixing zone (12), a hydrogen control valve, and a throttle valve; The intelligent control unit (5) is electrically connected to the high-pressure common rail injector (10), the electrically heated catalytic cracking reactor (11), and the engine status sensor group (13).

6. The online methanol-to-hydrogen mixing and combustion equipment for vehicles according to claim 5, characterized in that: The methanol atomization unit (2) further includes an ultrasonic atomization generator (14), which is electrically connected to the intelligent control unit (5).

7. The online methanol-to-hydrogen mixing and combustion equipment for vehicles according to claim 5, characterized in that: The electrically heated catalytic cracking reactor (11) includes a shell (15), an outlet (16), a catalytic electrode terminal (17), a catalytic section (18), a common electrode terminal for atomization catalytic heating (19), a high-temperature atomization section (20), a heating electrode terminal for atomization section (21), a methanol injector (22), and a methanol input pipe (23). The catalytic electrode terminal (17) is connected to the catalytic section (18). The heating electrode terminal for atomization section (21) is connected to the high-temperature atomization section (20). The common electrode terminal for atomization catalytic heating (19) is connected at the junction of the catalytic section (18) and the high-temperature atomization section (20). The methanol input pipe (23) is connected to the methanol injector (22), the methanol injector (22) is connected to the high-temperature atomization section (20), the high-temperature atomization section (20) is connected to the catalytic section (18), and the outlet (16) is connected to the catalytic section (18).

8. The online methanol-to-hydrogen mixing and combustion equipment for vehicles according to claim 7, characterized in that: A copper-based catalyst is placed inside the catalytic section (18), and a rare earth heating film is on the surface of the catalytic section (18); the high-temperature atomization section (20) contains high-temperature ceramic particles, and a rare earth heating film is on the surface of the high-temperature atomization section (20).

9. The online methanol-to-hydrogen mixing and combustion equipment for vehicles according to claim 7, characterized in that: It also includes a methanol injector housing (24), which is connected to the outside of the methanol injector (22).

10. The online methanol-to-hydrogen mixing and combustion equipment for vehicles according to claim 7, characterized in that: The catalytic section (18) and the high-temperature atomization section (20) are high-temperature resistant tubes, and rare earth heating films are formed on their surfaces by vapor deposition technology; the catalytic section (18) and the high-temperature atomization section (20) are two sections on the whole tube; or they are assembled from two separate tubes.

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