Methanol range extender for agricultural machine

Abstract

The utility model discloses a methanol range extender for agricultural machinery. The methanol range extender comprises an engine system, a storage system, a generator system and a control system, the engine system comprises a methanol engine, the methanol engine is provided with an air inlet pipe used for air entering and an exhaust pipe used for exhaust of waste gas, an air inlet unit is arranged at the air inlet pipe and used for controlling the amount of air entering the methanol engine, and an exhaust unit is arranged at the exhaust pipe and used for purifying and exhausting the waste gas generated by the methanol engine. The storage system comprises a methanol oil tank used for storing methanol, and a first conveying pipeline and a second conveying pipeline are arranged between the methanol oil tank and the methanol engine. According to the methanol range extender for the agricultural machine, methanol steam in the methanol oil tank can be adsorbed in time, the adsorbed methanol steam is conveyed to a methanol engine for combustion of the methanol engine, and the problems of waste and potential safety hazards caused by the fact that methanol in the methanol oil tank is volatilized more easily due to the fact that the working environment of the agricultural machine is worse and the agricultural machine runs more joltly are solved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a methanol range extender for agricultural machinery. Background Technology

[0002] With increasingly stringent environmental protection requirements and growing demand for renewable energy, electric equipment such as electric vehicles and electric agricultural machinery have seen widespread development. Currently, common range-extending technologies include fuel-based range extenders and hydrogen fuel cell range extenders, but these technologies suffer from high costs and significant environmental pollution. Methanol, as a clean liquid fuel, boasts advantages such as high energy density, wide availability, and low cost, making its use for range extension a promising option.

[0003] However, electric agricultural machinery operates in harsher environments than electric vehicles, experiencing greater bumps and higher loads during travel. This not only increases the evaporation of fuel from the range extender, leading to waste, but also challenges the range of the electric agricultural machinery, limiting its application in agricultural production. To address this issue, we urgently need a methanol range extender suitable for agricultural production. Utility Model Content

[0004] The purpose of this utility model is to provide a methanol range extender for agricultural machinery, which is designed to ensure the power and range of agricultural machinery in the working environment, and to solve the problems of waste and safety hazards caused by the easier volatilization of methanol in the methanol tank due to the harsher working environment and more bumpy driving of agricultural machinery.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A methanol range extender for agricultural machinery, comprising:

[0007] An engine system, comprising a methanol engine having an intake pipe for air intake and an exhaust pipe for exhaust gas discharge, wherein an intake unit is provided at the intake pipe for controlling the amount of air entering the methanol engine, and an exhaust unit is provided at the exhaust pipe for purifying and discharging the exhaust gas produced by the methanol engine.

[0008] A storage system includes a methanol tank for storing methanol. A first delivery pipeline and a second delivery pipeline are respectively provided between the methanol tank and the methanol engine. The first delivery pipeline is used to deliver methanol from the methanol tank to the methanol engine, and the second delivery pipeline is used to absorb methanol vapor from the methanol tank and deliver it to the methanol engine.

[0009] A generator system, which is connected to the methanol engine and is used to generate electricity;

[0010] The control system includes a microcontroller unit, which controls the methanol tank to deliver methanol to the methanol engine through a first delivery pipeline and to deliver methanol vapor absorbed in the second delivery pipeline to the methanol engine.

[0011] Preferably, a methanol pump and a high-pressure pump are sequentially arranged along the methanol flow direction on the first delivery pipeline. The methanol pump is used to draw methanol from the methanol tank and make methanol flow in the first delivery pipeline. The microcontroller unit is electrically connected to the methanol pump. The high-pressure pump is used to increase the flow rate and pressure of methanol when it is delivered from the first delivery pipeline to the methanol engine.

[0012] Preferably, the methanol range extender for agricultural machinery further includes a return pipeline, which is disposed between the methanol tank and the high-pressure pump, for returning the remaining methanol in the high-pressure pump to the methanol tank.

[0013] Preferably, the second delivery pipeline is provided with a carbon canister and a methanol vapor valve in sequence along the methanol vapor flow direction. The carbon canister is used to absorb methanol vapor in the methanol tank. The microcontroller is electrically connected to the methanol vapor valve, and the methanol vapor valve is used to deliver the methanol vapor absorbed in the carbon canister to the methanol engine.

[0014] Preferably, the methanol engine includes a cylinder block, a fuel injection assembly, and an ignition module. The cylinder block has an inlet and an outlet. The fuel injection assembly is located on the inlet side of the cylinder block, and the ignition module is located on the outlet side of the cylinder block. The fuel injection assembly is connected to the first delivery pipeline to deliver methanol into the cylinder block for compression. The ignition module is used to ignite the compressed methanol in the cylinder block to perform work.

[0015] Preferably, the methanol engine is equipped with a first temperature sensor located on the cylinder block inlet side for measuring the temperature on the cylinder block inlet side, and a second temperature sensor located on the cylinder block outlet side for measuring the temperature on the cylinder block outlet side. The microcontroller unit is electrically connected to the first and second temperature sensors respectively; and / or,

[0016] The methanol engine is equipped with a thermostat, which is mounted on the cylinder block and connected to the microcontroller unit.

[0017] Preferably, the intake unit includes an air filter and a throttle valve arranged sequentially along the intake direction of the intake pipe.

[0018] Preferably, the exhaust unit includes a catalytic converter and a muffler arranged sequentially along the exhaust direction of the exhaust pipe.

[0019] Preferably, an air flow sensor is provided on the intake pipe, the air flow sensor being located on the throttle valve outlet side and electrically connected to the microcontroller unit; and / or,

[0020] The exhaust pipe is equipped with a first oxygen sensor and a second oxygen sensor. The first oxygen sensor is located on the exhaust pipe on the side of the catalytic converter inlet, and the second oxygen sensor is located on the exhaust pipe between the catalytic converter outlet and the muffler.

[0021] Preferably, the generator system includes a generator body, a controller, and a high-voltage battery pack. The generator body is connected to the methanol engine via a transmission connection, and the generator body stores electrical energy into the high-voltage battery pack through the controller.

[0022] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0023] This methanol range extender for agricultural machinery can promptly adsorb methanol vapor from the methanol fuel tank and deliver the adsorbed methanol vapor to the methanol engine for combustion. This solves the problems of waste and safety hazards caused by the easier volatilization of methanol in the methanol fuel tank due to the harsher working environment and more bumpy driving of agricultural machinery. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a methanol range extender for agricultural machinery provided in an embodiment of this utility model.

[0025] In the picture:

[0026] 10. Methanol engine; 101. Intake manifold; 1011. Air filter; 1012. Throttle valve; 1013. Air flow sensor; 102. Exhaust manifold; 1021. Catalytic converter; 1022. Muffler; 1023. First oxygen sensor; 1024. Second oxygen sensor; 103. Cylinder block; 1031. First temperature sensor; 1032. Second temperature sensor; 104. Fuel injection assembly; 105. Ignition module; 106. Thermostat; 107. EGR valve;

[0027] 20. Methanol tank; 21. First delivery pipeline; 211. Methanol pump; 212. High-pressure pump; 213. Methanol filter element; 22. Second delivery pipeline; 221. Carbon canister; 222. Methanol vapor valve; 23. Return pipeline;

[0028] 30. Microcontroller unit;

[0029] 40. Generator body;

[0030] 41. Controller;

[0031] 42. High-voltage battery pack. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0033] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0034] Reference Figure 1 This utility model provides a methanol range extender for agricultural machinery, including an engine system, a storage system, a generator system, and a control system.

[0035] Specifically, the engine system is the core component of this methanol range extender for agricultural machinery. The engine system includes a methanol engine 10, which operates on the principle of internal combustion. The methanol engine 10 has an intake pipe 101 for air intake and an exhaust pipe 102 for exhaust gas discharge. An intake unit is installed at the intake pipe 101 to control the amount of air entering the methanol engine 10, and an exhaust unit is installed at the exhaust pipe 102 to purify and discharge the exhaust gas produced by the methanol engine 10. The intake unit may include an air filter 1011 and a throttle valve 1012 arranged sequentially along the intake direction of the intake pipe 101. An air flow sensor 1013 may be installed on the intake pipe 101. The air flow sensor 1013 is located on the outlet side of the throttle valve 1012 and is electrically connected to the microcontroller unit 30. It is used to detect the amount of fresh air entering the methanol engine 10 and transmit the data to the microcontroller unit 30. The microcontroller unit 30 adjusts the opening of the throttle valve 1012 according to the sensor data to control the amount of air entering the engine. The air filter 1011 is used to filter impurities in the fresh air to ensure that the air in the engine is clean.

[0036] In addition, the exhaust unit may include a catalytic converter 1021 and a muffler 1022 arranged sequentially along the exhaust direction of the exhaust pipe 102. The catalytic converter 1021 can effectively purify the harmful gases produced by the combustion of the methanol engine 10 and reduce emissions. The muffler 1022 is used to reduce exhaust noise and ensure a quiet working environment. A first oxygen sensor 1023 and a second oxygen sensor 1024 may be installed on the exhaust pipe 102. The first oxygen sensor 1023 is installed on the exhaust pipe 102 on the inlet side of the catalytic converter 1021, and the second oxygen sensor 1024 is installed on the exhaust pipe 102 between the outlet of the catalytic converter 1021 and the muffler 1022. The first oxygen sensor 1023 and the second oxygen sensor 1024 are electrically connected to the microcontroller unit 30.

[0037] It should be noted that the methanol engine 10 is also equipped with an EGR valve 107, which is electrically connected to the microcontroller unit 30. The microcontroller unit 30 controls and adjusts the amount of exhaust gas generated by the methanol engine 10 to be re-mixed with the engine's combustible gas for recirculation based on parameters such as carbon monoxide in the exhaust gas detected by the first oxygen sensor 1023, in order to reduce the amount of carbon monoxide generated. The microcontroller unit 30 controls the opening of the throttle valve 1012 based on parameters such as carbon monoxide in the exhaust gas purified by the catalyst 1021 detected by the second oxygen sensor 1024, in order to control the engine's intake air volume, thereby adjusting the air-fuel ratio of the methanol engine 10. The optimal air-fuel ratio in practical applications is 1:6.7, which can keep the carbon monoxide content in the exhaust gas at a low level.

[0038] The storage system includes a methanol tank 20 for storing methanol. The methanol tank 20 is made of a methanol-resistant material to ensure its service life. A first delivery pipeline 21 and a second delivery pipeline 22 are respectively provided between the methanol tank 20 and the methanol engine 10. The first delivery pipeline 21 is used to deliver methanol from the methanol tank 20 to the methanol engine 10 to provide fuel for the operation of the methanol engine 10. The second delivery pipeline 22 is used to absorb methanol vapor from the methanol tank 20 and deliver it to the methanol engine 10, making full use of the methanol vapor in the methanol tank 20, reducing waste, and lowering the methanol vapor level in the methanol tank 20 to reduce safety hazards.

[0039] The first delivery pipeline 21 is equipped with a methanol pump 211 and a high-pressure pump 212 in sequence along the methanol flow direction. The methanol pump 211 is used to draw methanol from the methanol tank 20 and make the methanol flow in the first delivery pipeline 21. The methanol pump 211 draws methanol from the methanol tank 20 and pushes the methanol to the high-pressure pump 212. Under the action of the high-pressure pump 212, the flow rate of methanol can be increased, so that it can enter the methanol engine 10 with appropriate pressure and flow rate. The microcontroller unit 30 is electrically connected to the methanol pump 211. The high-pressure pump 212 is used to increase the flow rate and pressure of methanol when it is delivered from the first delivery pipeline 21 to the inside of the methanol engine 10, so that methanol can enter the engine with a higher flow rate and pressure and mix with air to burn and do work.

[0040] It should be noted that a methanol filter element 213 is installed on the first delivery pipeline 21 between the methanol tank 20 and the methanol pump 211 to filter impurities in the methanol flowing into the first delivery pipeline 21 from the methanol tank 20, which can provide cleaner methanol fuel for the methanol engine 10 and keep the engine in good working condition.

[0041] In practical applications, in order to avoid methanol waste and improve the energy efficiency of the system, the methanol range extender for agricultural machinery can also include a return pipeline 23. The return pipeline 23 is set between the methanol tank 20 and the high-pressure pump 212 to return the remaining methanol in the high-pressure pump 212 to the methanol tank 20, realize the recycling of methanol, and ensure the efficient operation of the system.

[0042] Furthermore, the second delivery pipeline 22 is sequentially equipped with a carbon canister 221 and a methanol vapor valve 222 along the methanol vapor flow direction. The carbon canister 221 is used to absorb methanol vapor in the methanol fuel tank 20. Specifically, the carbon canister 221 can absorb methanol vapor through physical adsorption. The microcontroller unit 30 is electrically connected to the methanol vapor valve 222, which is used to deliver the methanol vapor absorbed in the carbon canister 221 to the methanol engine 10. Specifically, according to the instructions of the microcontroller unit 30, the methanol vapor valve 222 controls itself to open and close at regular intervals during engine operation, promptly releasing the methanol vapor adsorbed by the carbon canister 221 into the methanol engine 10, preventing the carbon canister 221 from becoming saturated and affecting the adsorption effect of methanol vapor in the methanol fuel tank 20. Thus, it can promptly adsorb methanol vapor in the methanol fuel tank 20 and deliver the adsorbed methanol vapor to the methanol engine 10 for combustion, solving the waste and safety hazards caused by the easier volatilization of methanol in the methanol fuel tank 20 due to the harsher working environment and more bumpy driving of agricultural machinery.

[0043] It should be noted that when the methanol vapor content adsorbed by the carbon canister 221 reaches a certain level, the microcontroller unit 30 controls the methanol vapor valve 222 to open, and the carbon canister 221 inputs the adsorbed methanol vapor into the methanol engine 10. The carbon canister 221 then returns to the venting state, enabling it to continuously adsorb methanol vapor in the methanol fuel tank 20 and keep the methanol vapor in the methanol fuel tank 20 at a low level.

[0044] The generator system is driven by the methanol engine 10 and is used to generate electricity. The generator system includes a generator body 40, a controller 41, and a high-voltage battery pack 42. The generator body 40 is driven by the methanol engine 10, and the generator generates electrical energy through the power of the methanol engine 10. The generator body 40 stores the electrical energy in the high-voltage battery pack 42 through the controller 41. The controller 41 is responsible for regulating the electrical energy output by the generator and storing it in the high-voltage battery pack 42. The high-voltage battery pack (42) stores the electrical energy generated by the generator for use in agricultural machinery electrical systems and other equipment. This allows the agricultural machinery to generate electrical energy during the operation of the methanol engine 10, which can directly power the drive of the agricultural machinery, charge the high-voltage battery pack 42, or, under suitable voltage conditions, provide auxiliary power to other components such as lighting and navigation.

[0045] The control system includes a microcontroller unit (ECU) 30, which controls the methanol tank 20 to deliver methanol to the methanol engine 10 through the first delivery pipeline 21, and to deliver methanol vapor absorbed in the second delivery pipeline 22 to the methanol engine 10.

[0046] Therefore, this methanol range extender for agricultural machinery, through the cooperation of the first delivery pipeline 21 and the second delivery pipeline 22, can provide a stable supply of methanol fuel to the methanol engine 10. The methanol remaining in the high-pressure pump 212 on the first delivery pipeline 21 is returned to the methanol tank 20 through the return pipeline 23, so that the amount of methanol injected into the methanol engine 10 by the high-pressure pump 212 each time remains constant, avoiding the residual methanol in the high-pressure pump 212 from affecting the accuracy of the engine fuel input. At the same time, through the cooperation of the carbon canister 221 and the methanol vapor valve 222 on the second delivery pipeline 22, it can not only continuously absorb the methanol vapor in the methanol tank 20, keeping the methanol vapor in the methanol tank 20 at a low level, but also the methanol vapor valve 222 can transport the methanol vapor in the carbon canister 221 to the methanol engine 10 for combustion, improving the utilization rate of methanol in the methanol tank 20. This solves a series of safety and methanol waste problems caused by the methanol in the methanol tank 20 being more likely to volatilize and form methanol vapor due to the working environment of agricultural machinery.

[0047] In some optional embodiments, the methanol engine 10 is provided with a cylinder block 103, a fuel injection assembly 104, and an ignition module 105. The cylinder block 103 has an inlet and an outlet. The fuel injection assembly 104 is located on the inlet side of the cylinder block 103, and the ignition module 105 is located on the outlet side of the cylinder block 103. The fuel injection assembly 104 is connected to the first delivery pipeline 21 to deliver methanol into the cylinder block 103 for compression. The ignition module 105 is used to ignite the compressed methanol in the cylinder block 103 to perform work.

[0048] In this embodiment, the methanol engine 10 is equipped with a first temperature sensor 1031 located on the input side of the cylinder block 103 to measure the temperature on the input side of the cylinder block 103. The methanol engine 10 is also equipped with a second temperature sensor 1032 located on the output side of the cylinder block 103 to measure the temperature on the output side of the cylinder block 103. The microcontroller unit 30 is electrically connected to both the first and second temperature sensors 1031 and 1032. Furthermore, the methanol engine 10 may also include a thermostat 106, which is mounted on the cylinder block 103 and connected to the microcontroller unit 30. Thus, the microcontroller unit 30 controls the thermostat 106 based on the temperature difference between the two sensors, adjusting the engine's cooling system to ensure the engine operates within its optimal operating temperature range, thereby improving combustion efficiency and extending engine life.

[0049] Therefore, when the agricultural machinery starts, the methanol engine 10 draws in air through the intake unit and mixes it with methanol in the storage system. The mixture is then injected into the cylinder 103 through the fuel injection assembly 104 for compression and ignition, generating power. The exhaust unit discharges the exhaust gas after combustion through the exhaust pipe 102 and purifies it through the catalytic converter 1021. The storage system delivers methanol to the methanol engine 10 through the methanol pump 211 and the high-pressure pump 212, and absorbs the vapor in the methanol fuel tank 20 through the second delivery pipeline 22, keeping the methanol vapor in the methanol fuel tank 20 at a low level. The absorbed methanol vapor is then delivered to the engine, improving the utilization efficiency of methanol in the methanol fuel tank 20 and ensuring sufficient methanol for engine combustion. The generator system converts the mechanical power of the engine into electrical energy, which is stored in the high-voltage battery pack 42 to provide the necessary electrical energy for the agricultural machinery, either to directly drive the operation of the agricultural machinery or to charge the agricultural machinery to extend its range.

[0050] This utility model's agricultural methanol range extender uses methanol as fuel, which has lower carbon emissions compared to traditional fuels, thus promoting the environmentally friendly operation of agricultural machinery. It can also promptly absorb methanol vapor from the methanol fuel tank 20, maintaining a low level of methanol vapor. Furthermore, the microcontroller 30 can intelligently adjust the system operation according to different working conditions, delivering the collected methanol vapor to the methanol engine 10 for combustion, improving system energy efficiency. The catalytic converter 1021 in the exhaust unit effectively reduces harmful emissions in the exhaust gas, meeting environmental protection requirements. Through the cooperation of the generator body 40 and the high-voltage battery pack 42, it can not only directly power the engine but also charge the agricultural machinery to power other electronic devices on the machine.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A methanol range extender for agricultural machinery, characterized in that, include: An engine system comprising a methanol engine (10) having an intake pipe (101) for air intake and an exhaust pipe (102) for exhaust gas discharge, wherein an intake unit is provided at the intake pipe (101) for controlling the amount of air entering the methanol engine (10) and an exhaust unit is provided at the exhaust pipe (102) for purifying and discharging the exhaust gas produced by the methanol engine (10); The storage system includes a methanol tank (20) for storing methanol. A first delivery pipeline (21) and a second delivery pipeline (22) are respectively provided between the methanol tank (20) and the methanol engine (10). The first delivery pipeline (21) is used to deliver methanol in the methanol tank (20) to the methanol engine (10), and the second delivery pipeline (22) is used to absorb methanol vapor in the methanol tank (20) and deliver it to the methanol engine (10). A generator system, which is connected to the methanol engine (10) and is used to generate electricity; The control system includes a microcontroller (30) for controlling the methanol tank (20) to deliver methanol to the methanol engine (10) through the first delivery pipeline (21), and to deliver methanol vapor absorbed in the second delivery pipeline (22) to the methanol engine (10).

2. The methanol range extender for agricultural machinery according to claim 1, characterized in that, A methanol pump (211) and a high-pressure pump (212) are sequentially arranged along the methanol flow direction on the first delivery pipeline (21). The methanol pump (211) is used to draw methanol from the methanol tank (20) and make methanol flow in the first delivery pipeline (21). The microcontroller unit (30) is electrically connected to the methanol pump (211). The high-pressure pump (212) is used to increase the flow rate and pressure of methanol when it is delivered from the first delivery pipeline (21) to the methanol engine (10).

3. The methanol range extender for agricultural machinery according to claim 2, characterized in that, The methanol range extender for agricultural machinery also includes a return pipeline (23), which is located between the methanol tank (20) and the high-pressure pump (212) to return the remaining methanol in the high-pressure pump (212) to the methanol tank (20).

4. The methanol range extender for agricultural machinery according to claim 1, characterized in that, The second delivery pipeline (22) is provided with a carbon canister (221) and a methanol vapor valve (222) in sequence along the methanol vapor flow direction. The carbon canister (221) is used to absorb methanol vapor in the methanol tank (20). The microcontroller unit (30) is electrically connected to the methanol vapor valve (222). The methanol vapor valve (222) is used to deliver the methanol vapor absorbed in the carbon canister (221) to the methanol engine (10).

5. The methanol range extender for agricultural machinery according to claim 1, characterized in that, The methanol engine (10) is provided with a cylinder block (103), a fuel injection assembly (104), and an ignition module (105). The cylinder block (103) has an inlet and an outlet. The fuel injection assembly (104) is located on the inlet side of the cylinder block (103), and the ignition module (105) is located on the outlet side of the cylinder block (103). The fuel injection assembly (104) is connected to the first delivery pipeline (21) to deliver methanol to the cylinder block (103) for compression. The ignition module (105) is used to ignite the methanol compressed in the cylinder block (103) to perform work.

6. The methanol range extender for agricultural machinery according to claim 5, characterized in that, The methanol engine (10) is equipped with a first temperature sensor (1031) located on the side of the cylinder block (103) input port for measuring the temperature on the side of the cylinder block (103) input port. The methanol engine (10) is also equipped with a second temperature sensor (1032) located on the side of the cylinder block (103) output port for measuring the temperature on the side of the cylinder block (103) output port. The microcontroller unit (30) is electrically connected to both the first temperature sensor (1031) and the second temperature sensor (1032); and / or, The methanol engine (10) is equipped with a thermostat (106), which is mounted on the cylinder block (103) and connected to the microcontroller unit (30).

7. The methanol range extender for agricultural machinery according to claim 1, characterized in that, The intake unit includes an air filter (1011) and a throttle valve (1012) arranged sequentially along the intake direction of the intake pipe (101).

8. The methanol range extender for agricultural machinery according to claim 7, characterized in that, The exhaust unit includes a catalytic converter (1021) and a muffler (1022) arranged sequentially along the exhaust direction of the exhaust pipe (102).

9. The methanol range extender for agricultural machinery according to claim 8, characterized in that, An air flow sensor (1013) is provided on the intake pipe (101), the air flow sensor (1013) is located on the outlet side of the throttle valve (1012) and electrically connected to the microcontroller unit (30); and / or, The exhaust pipe (102) is provided with a first oxygen sensor (1023) and a second oxygen sensor (1024). The first oxygen sensor (1023) is located on the exhaust pipe (102) on the side of the inlet of the catalyst (1021), and the second oxygen sensor (1024) is located on the exhaust pipe (102) between the outlet of the catalyst (1021) and the muffler (1022).

10. The methanol range extender for agricultural machinery according to claim 1, characterized in that, The generator system includes a generator body (40), a controller (41) and a high-voltage battery pack (42). The generator body (40) is connected to the methanol engine (10) via a transmission. The generator body (40) stores electrical energy into the high-voltage battery pack (42) through the controller (41).

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