Methanol engine air valve electromagnetic induction heater and methanol engine

Abstract

The invention belongs to the technical field of combustion engines, and particularly relates to a methanol engine air valve electromagnetic induction heater and a methanol engine. The methanol engine air valve electromagnetic induction heater comprises a magnetizer, the magnetizer is arranged on an air inlet pipe of the methanol engine, an electromagnetic induction coil is arranged outside the magnetizer in a surrounding mode, and an insulation heat insulation layer is arranged outside the electromagnetic induction coil; a cooling flow channel is formed in the air inlet pipe, a water pump is arranged on the cooling flow channel, a power module is arranged on the electromagnetic induction coil, a controller is arranged on the power module, a temperature sensor matched with the controller is arranged on the air inlet pipe, and the temperature sensor, the power module and the water pump are all electrically connected with the controller. And a low temperature threshold value, a high temperature threshold value and a high temperature early warning critical value are preset in the controller, methanol liquefaction can be avoided, and high adaptability and reliability are achieved under complex working conditions.

Description

Technical Field

[0001] The invention belongs to the technical field of combustion engines, and in particular relates to an electromagnetic induction heater for a methanol engine gas valve and a methanol engine. Background Art

[0002] As a clean and environmentally friendly fuel, methanol, with its clean, renewable, and high-octane properties, has become a highly promising alternative fuel for marine engines. Compared to traditional fossil fuels, methanol combustion produces significantly lower emissions of carbon dioxide, nitrogen oxides, and particulate matter, and is increasingly being used in heavy-duty commercial vehicles and ship power systems. However, methanol engines face many technical challenges during actual operation. Methanol easily condenses and aggregates into a liquid at the valve, triggering a series of chain reactions such as valve seal failure and a sudden drop in combustion efficiency. This not only makes cold starting of methanol engines difficult, increasing startup energy consumption and time costs, but also accelerates valve corrosion, exacerbating carbon deposits, and in severe cases, even causing serious failures such as pre-ignition and detonation, posing a serious threat to the power performance, reliability, and safety of methanol engines. Currently, traditional electric heating is often used to address methanol accumulation in the valve area. While simple in principle, this method consumes significant energy, suffers from poor heating uniformity, and struggles to achieve precise temperature control. Furthermore, traditional electric heating methods often suffer from slow response and an inability to quickly adapt to temperature changes, making them incapable of meeting the precise combustion control requirements of methanol engines.

[0003] Chinese patent CN221973689U discloses a fluid electromagnetic heater for a methanol engine. The heater comprises an inner heating tube, insulation wool, an electromagnetic induction coil, several high-frequency magnetic strips, two insulating sleeves, and an outer shell. The ends of the inner heating tube are fixedly connected to a connector body. The insulation wool is wrapped around the outer circumference of the inner heating tube, and the spiral electromagnetic induction coil is wound around the insulation wool. The terminals at each end of the electromagnetic induction coil are vertically upward and respectively covered with insulating sleeves. Several high-frequency magnetic strips are evenly arranged along the axial direction of the inner heating tube and are adhesively fixed to the outer circumference of the electromagnetic induction coil. A circular tubular outer shell is fixed to the outer surfaces of the high-frequency magnetic strips. This patent has low energy consumption and a fast heating rate, but the heating process relies solely on power regulation of the electromagnetic induction coil and lacks real-time temperature monitoring and control systems. The cooling system only cools the terminals of the electromagnetic induction coil, not directly the fluid in the inner heating tube. This results in a limited cooling range and is unable to accurately maintain the required temperature range for methanol gas. This makes it unsuitable for applications such as marine and heavy commercial vehicles, where operating conditions fluctuate drastically. Summary of the Invention

[0004] The purpose of the present invention is to provide an electromagnetic induction heater for a methanol engine valve, which can prevent methanol from liquefying and condensing, ensure stable combustion of methanol, and is suitable for efficient combustion requirements under harsh working conditions such as ships and heavy commercial vehicles. The present invention also provides a methanol engine.

[0005] To achieve the above object, the technical solution of the present invention is: A methanol engine valve electromagnetic induction heater includes a magnetizer, which is arranged on the intake pipe of the methanol engine, an electromagnetic induction coil is arranged around the magnetizer, an insulating heat insulation layer is arranged on the outside of the electromagnetic induction coil, a cooling flow channel is arranged inside the intake pipe, a water pump is arranged on the cooling flow channel, a power module is arranged on the electromagnetic induction coil, a controller is arranged on the power module, a temperature sensor is arranged on one side of the intake pipe to cooperate with the controller, the temperature sensor, the power module and the water pump are all electrically connected to the controller, and a low temperature threshold, a high temperature threshold and a high temperature warning critical value are preset inside the controller.

[0006] Furthermore, the controller adjustment process is as follows: the temperature sensor detects the intake pipe temperature in real time and transmits the temperature signal to the controller. When the intake pipe temperature is ≤ the low temperature threshold, the controller sends an instruction to the power module to increase the current of the electromagnetic induction coil and continuously heat it. At the same time, the controller sends an instruction to the water pump to turn off the water pump until the intake pipe temperature is greater than the low temperature threshold; when the intake pipe temperature is ≥ the high temperature threshold, the controller sends an instruction to the power module to reduce the current of the electromagnetic induction coil and intermittent pulse heating. At the same time, the controller sends an instruction to the water pump to start the water pump until the intake pipe temperature is less than the high temperature threshold.

[0007] Furthermore, the temperature sensor detects the intake pipe temperature in real time and transmits the temperature signal to the controller. When the intake pipe temperature is ≥ the high temperature warning critical value, the controller triggers the high temperature alarm, cuts off the power module and keeps the water pump running until the intake pipe temperature is < the high temperature warning critical value.

[0008] Furthermore, the on-off ratio of the intermittent pulse heating is 1:2, the on-time of each pulse is 100ms, and the off-time of each pulse is 200ms.

[0009] Furthermore, the magnetizer is arranged as a whole in a hollow tube shape, the outer diameter of the magnetizer is equal to the outer diameter of the air intake pipe, and the inner diameter of the magnetizer is equal to the inner diameter of the air intake pipe.

[0010] Furthermore, a plurality of groups of heat transfer plates are provided inside the magnetic conductor, and the plurality of groups of heat transfer plates are stacked and distributed along the axial direction of the magnetic conductor.

[0011] Furthermore, the heat transfer plate is an overall circular ring-shaped structure, with its outer wall aligned with the inner wall of the magnet. The plate is provided with a notch. The plate comprises an inner annular edge and an outer annular edge, with the notch positioned at the center of the inner annular edge. Several openings are evenly spaced around the notch between the inner and outer annular edges. Together, these openings and the notch form the flow structure of the plate. As methanol flows within the magnet, these openings create turbulent flow, promoting methanol mixing and heat transfer, thereby improving heating uniformity and heat exchange efficiency.

[0012] Furthermore, a bent U-shaped tube is provided at one end of the cooling channel, and the bent U-shaped tube includes two longitudinal straight tube portions parallel to each other and an arc-shaped bent tube portion connecting the two longitudinal straight tube portions.

[0013] Furthermore, the cooling channel passes through the slots on the plurality of groups of heat transfer plates, a coolant is provided inside the cooling channel, and the cooling channel passes through the magnetic conductor and is connected to a water pump.

[0014] A methanol engine equipped with an electromagnetic induction heater for a methanol engine valve comprises an engine frame, wherein an intake pipe and an exhaust pipe are arranged inside the engine frame, a valve rocker arm is arranged between the intake pipe and the exhaust pipe, a magnet is arranged on the intake pipe, an electromagnetic induction coil is arranged around the magnet, an insulating heat insulation layer is arranged outside the electromagnetic induction coil, a cooling flow channel is arranged inside the intake pipe, a water pump is arranged on the cooling flow channel, a power module is arranged on the electromagnetic induction coil, a controller is arranged on the power module, a temperature sensor is arranged on one side of the intake pipe in coordination with the controller, the temperature sensor, the power module and the water pump are all electrically connected to the controller, a low temperature threshold, a high temperature threshold and a high temperature warning critical value are preset inside the controller, the temperature sensor is fixedly arranged inside the engine frame and the temperature sensor is arranged close to the intake pipe, the controller, the power module and the water pump are all fixedly arranged outside the engine frame, an end of the cooling flow channel away from the magnet is passed through a side wall of the engine frame and is fixedly connected to the water pump, and an end of the electromagnetic induction coil away from the magnet is passed through the side wall of the engine frame and is fixedly connected to the power module.

[0015] The beneficial effects of the present invention are: The temperature sensor can monitor the intake pipe temperature in real time and transmit the data to the controller. The controller adjusts the electromagnetic induction coil through the power module to avoid methanol liquefaction and condensation, ensuring stable combustion of methanol. The cooling flow channel and water pump in the intake pipe form a cooling system, which forms dual temperature control with the electromagnetic induction coil to achieve a dynamic balance between heating and cooling. It can quickly respond to temperature changes, solve the problem of inaccurate temperature control of traditional electric heating, and improve the adaptability and reliability of methanol engines.

[0016] The insulating and thermal insulation layer enables the electromagnetic induction coil to adapt to the severe vibrations during the operation of vehicles or ships, extending the service life of the electromagnetic induction coil and reducing the risk of heat loss and leakage; the controller can cut off the power module when the temperature is abnormal, preventing serious faults such as pre-ignition and detonation caused by excessive temperature, and providing protection for the safe operation of the methanol engine.

[0017] The hollow tubular structure of the magnetizer can more efficiently guide the magnetic field generated by the electromagnetic induction coil, so that the magnetic field is concentrated on the intake pipe area. At the same time, the magnetizer can fit the intake pipe to ensure the integrity of the original structure of the intake pipe, so that the heat generated by electromagnetic induction can be more evenly transferred to the methanol in the intake pipe, thereby improving the heating uniformity. The heat transfer plates arranged inside the magnetizer are stacked along the axial direction of the magnetizer, which can more directly transfer the heat generated by electromagnetic induction in the magnetizer, thereby improving the heating efficiency. Compared with traditional electric heating methods, it can shorten the methanol heating time and reduce energy loss, and adapt to the high load requirements of methanol engines under harsh working conditions such as ships and heavy commercial vehicles. The stacked heat transfer plates form a certain support structure inside the magnetizer, which can enhance the structural strength of the magnetizer, so that it is not easy to affect the heating effect due to its own structural deformation under working conditions such as engine vibration, thereby ensuring long-term stable operation.

[0018] A bent U-shaped tube is set at one end of the cooling channel, which can pass through the slot on the heat transfer plate. When the water pump is turned on, the cooling channel can quickly take away the heat accumulated in the magnetic body, and through cooperation with the electromagnetic induction coil heating, realize coordinated temperature control of heating and cooling; the bent U-shaped tube increases the contact path and time between the coolant and methanol in the limited internal space of the magnetic body, thereby improving the cooling efficiency. At the same time, there is no need to significantly increase the volume of the equipment, and it is easy to install and arrange on the engine frame.

[0019] The temperature sensor, controller, power module, cooling channel and water pump have a compact structure and are stable and reliable as a whole. They have strong adaptability and reliability under complex working conditions, are easy to install and maintain, and do not require large-scale modifications to the engine frame, thus reducing costs.

[0020] The present invention can avoid methanol liquefaction and reduce the probability of sudden failure by actively regulating the temperature of the intake pipe. It has a stable and reliable structure and strong adaptability and reliability under complex working conditions. It is suitable for the efficient combustion requirements under harsh working conditions such as ships and heavy commercial vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a partial structural cross-sectional view of the magnetic conductor, cooling channel, heat transfer plate and notch in the present invention; Figure 4 It is a partial structural diagram of the air intake pipe, the magnetic conductor and the electromagnetic induction coil in the present invention; Figure 5 This is a partial structural cross-sectional view of the magnetic conductor, heat transfer plate and notch in the present invention; Figure 6 It is a schematic structural diagram of the heat transfer plate and the notch in the present invention; Figure 7 It is a partial structural diagram of the air intake pipe, the magnetic conductor and the cooling channel in the present invention; Figure 8 It is a partial structural schematic diagram of the cooling channel in the present invention; In the picture: 1. Engine frame; 2. Intake pipe; 3. Exhaust pipe; 4. Rocker arm; 5. Magnet; 6. Electromagnetic induction coil; 7. Cooling channel; 8. Water pump; 9. Power module; 10. Controller; 11. Temperature sensor; 12. Heat transfer plate; 13. Slot. DETAILED DESCRIPTION

[0022] The present invention is described and illustrated in detail below with reference to the embodiments.

[0023] Example 1 like Figure 1-8 As shown, a methanol engine valve electromagnetic induction heater includes a magnetizer 5, which is arranged on the intake pipe 2 of the methanol engine. An electromagnetic induction coil 6 is arranged around the magnetizer 5, and an insulating heat insulation layer is arranged on the outside of the electromagnetic induction coil 6. A cooling flow channel 7 is arranged inside the intake pipe 2, and a water pump 8 is arranged on the cooling flow channel 7. A power module 9 is arranged on the electromagnetic induction coil 6, and a controller 10 is arranged on the power module 9. A temperature sensor 11 is arranged on one side of the intake pipe 2 to cooperate with the controller 10. The temperature sensor 11, the power module 9 and the water pump 8 are all electrically connected to the controller 10. A low temperature threshold, a high temperature threshold and a high temperature warning critical value are preset in the controller 10.

[0024] The magnetic conductor 5 on the intake pipe 2 cooperates with the electromagnetic induction coil 6 to achieve efficient heating using the principle of electromagnetic induction; the insulating heat insulation layer can protect the electromagnetic induction coil 6 and reduce the risk of leakage; the cooling channel 7 and the water pump 8 in the intake pipe 2 constitute a cooling system, which forms a dual temperature control with the heating of the electromagnetic induction coil 6; the temperature sensor 11, the power module 9 and the water pump 8 are all electrically connected to the controller 10, and through the preset low temperature threshold, high temperature threshold and high temperature warning critical value, the real-time monitoring and precise control of the intake pipe 2 temperature are achieved, which can prevent methanol liquefaction and ensure stable combustion of the methanol engine, solving the problems of inaccurate temperature control and slow response of traditional electric heating.

[0025] The adjustment process of the controller 10 is as follows: the temperature sensor 11 detects the temperature of the intake pipe 2 in real time and transmits the temperature signal to the controller 10. When the temperature of the intake pipe 2 is ≤ the low temperature threshold, the controller 10 sends an instruction to the power module 9 to increase the current of the electromagnetic induction coil 6 and continuously heat it. At the same time, the controller 10 sends an instruction to the water pump 8 to turn off the water pump 8 until the temperature of the intake pipe 2 is greater than the low temperature threshold; when the temperature of the intake pipe 2 is ≥ the high temperature threshold, the controller 10 sends an instruction to the power module 9 to reduce the current of the electromagnetic induction coil 6 and intermittent pulse heating. At the same time, the controller 10 sends an instruction to the water pump 8 to start the water pump 8 until the temperature of the intake pipe 2 is less than the high temperature threshold.

[0026] The controller 10 adjusts the current of the electromagnetic induction coil 6 according to the feedback signal of the temperature sensor 11. When the temperature of the intake pipe 2 is ≤ the low temperature threshold, continuous heating is performed and the water pump 8 is turned off, which can quickly increase the temperature, avoid methanol liquefaction due to low temperature, and avoid unnecessary cooling energy consumption; when the temperature of the intake pipe 2 is ≥ the high temperature threshold, intermittent pulse heating is performed and the water pump 8 is started, which not only prevents the temperature from being too high, but also uses the coolant circulation to quickly take away excess heat, maintaining temperature stability while saving energy, and significantly improving the temperature control accuracy compared to traditional heating methods; the water pump 8 cooperates with the electromagnetic induction coil 6 to achieve a dynamic balance between heating and cooling, thereby improving the response speed to temperature changes.

[0027] The temperature sensor 11 detects the temperature of the intake pipe 2 in real time and transmits the temperature signal to the controller 10. When the temperature of the intake pipe 2 is ≥ the high temperature warning critical value, the controller 10 triggers a high temperature alarm, cuts off the power module 9 and keeps the water pump 8 running until the temperature of the intake pipe 2 is < the high temperature warning critical value.

[0028] When the temperature of the intake pipe 2 is ≥ the high temperature warning critical value, the controller 10 triggers the high temperature alarm to promptly remind the operator of the abnormal situation, and at the same time cuts off the power module 9 to prevent the electromagnetic induction coil 6 from continuing to heat and causing more serious faults; at the same time, the controller 10 keeps the water pump 8 running continuously and uses the cooling flow channel 7 to further reduce the temperature, thereby maximizing the safety of the methanol engine and reducing the risk of serious faults such as pre-ignition and detonation due to high temperature.

[0029] The intermittent pulse heating has an on-off ratio of 1:2, with each pulse on for 100ms and off for 200ms. This method further reduces energy consumption and extends the life of the electromagnetic induction coil 6 while still meeting temperature control requirements. It also keeps intake pipe 2 temperature fluctuations within a narrow range, ensuring stable combustion conditions in the methanol engine.

[0030] The magnetizer 5 is a hollow tube with an outer diameter equal to the outer diameter of the intake pipe 2 and an inner diameter equal to the inner diameter of the intake pipe 2. The hollow tube-shaped magnetizer 5 seamlessly fits the intake pipe 2, ensuring a uniform magnetic field across the intake pipe 2 and improving heating efficiency.

[0031] A plurality of heat transfer fins 12 are provided inside the magnetizer 5 , and the plurality of heat transfer fins 12 are stacked and distributed along the axial direction of the magnetizer 5 .

[0032] The heat transfer fin 12 is an annular sheet-like structure, with its outer wall aligned with the inner wall of the magnet 5. Notches 13 are provided on the fin 12. This increases the heat exchange area, rapidly transferring heat from the magnet 5 to the methanol, thereby increasing the heating rate. It also acts as a flow turbulent, promoting the mixing of methanol within the magnet 5 and improving combustion uniformity. The notches 13 provide a path for the cooling channel 7, allowing the coolant to directly remove heat from the magnet 5, achieving precise temperature control.

[0033] A bent U-shaped tube is provided at one end of the cooling channel 7. The bent U-shaped tube includes two longitudinal straight tube portions parallel to each other and an arc-shaped bent tube portion connecting the two longitudinal straight tube portions.

[0034] The cooling channel 7 is provided through the slots 13 on the plurality of heat transfer fins 12. A coolant is provided inside the cooling channel 7. The cooling channel 7 passes through the magnet 5 and is connected to the water pump 8. The coolant has good thermal conductivity and can quickly absorb and carry away heat from the intake pipe 2.

[0035] like Figure 1-2 As shown, a methanol engine equipped with a methanol engine valve electromagnetic induction heater comprises an engine frame 1, an intake pipe 2 and an exhaust pipe 3 are arranged inside the engine frame 1, a valve rocker arm 4 is arranged between the intake pipe 2 and the exhaust pipe 3, a magnetic conductor 5 is arranged on the intake pipe 2, an electromagnetic induction coil 6 is arranged around the magnet conductor 5, an insulating heat insulation layer is arranged outside the electromagnetic induction coil 6, a cooling channel 7 is arranged inside the intake pipe 2, a water pump 8 is arranged on the cooling channel 7, a power module 9 is arranged on the electromagnetic induction coil 6, a controller 10 is arranged on the power module 9, and a temperature sensor is set on one side of the intake pipe 2 in conjunction with the controller 10. The temperature sensor 11, the power module 9 and the water pump 8 are all electrically connected to the controller 10. The controller 10 has preset low temperature thresholds, high temperature thresholds and high temperature warning critical values. The temperature sensor 11 is fixedly arranged inside the engine frame 1 and the temperature sensor 11 is arranged close to the intake pipe 2. The controller 10, the power module 9 and the water pump 8 are all fixedly arranged outside the engine frame 1. The end of the cooling channel 7 away from the magnetizer 5 passes through the side wall of the engine frame 1 and is fixedly connected to the water pump 8. The end of the electromagnetic induction coil 6 away from the magnetizer 5 passes through the side wall of the engine frame 1 and is fixedly connected to the power module 9.

[0036] The controller 10, power module 9 and water pump 8 are arranged outside the engine frame 1, which is convenient for inspection and replacement and reduces the difficulty of maintenance; the magnetizer 5, electromagnetic induction coil 6 and cooling channel 7 are arranged in conjunction with the intake pipe 2, which not only ensures functional integrity but also does not interfere with the original structure of the methanol engine. It is suitable for space-constrained scenarios such as ships or heavy vehicles.

Claims

1. A methanol engine gas valve electromagnetic induction heater, comprising a magnetic conductor (5), the magnetic conductor (5) being arranged on an intake pipe (2) of a methanol engine, characterized in that: An electromagnetic induction coil (6) is arranged around the magnetizer (5), and an insulating heat-insulating layer is arranged outside the electromagnetic induction coil (6). A cooling channel (7) is arranged inside the air intake pipe (2), and a water pump (8) is arranged on the cooling channel (7). A power module (9) is arranged on the electromagnetic induction coil (6), and a controller (10) is arranged on the power module (9). A temperature sensor (11) is arranged on one side of the air intake pipe (2) in conjunction with the controller (10). The temperature sensor (11), the power module (9) and the water pump (8) are all electrically connected to the controller (10). A low temperature threshold, a high temperature threshold and a high temperature warning critical value are preset inside the controller (10).

2. The methanol engine gas valve electromagnetic induction heater according to claim 1, characterized in that: The controller (10) adjusts the process as follows: the temperature sensor (11) detects the temperature of the intake pipe (2) in real time and transmits the temperature signal to the controller (10); when the temperature of the intake pipe (2) is less than or equal to the low temperature threshold, the controller (10) sends a command to the power module (9) to increase the current of the electromagnetic induction coil (6) and continuously heat it; at the same time, the controller (10) sends a command to the water pump (8) to turn off the water pump (8) until the temperature of the intake pipe (2) is greater than or equal to the low temperature threshold; when the temperature of the intake pipe (2) is greater than or equal to the high temperature threshold, the controller (10) sends a command to the power module (9) to reduce the current of the electromagnetic induction coil (6) and intermittently pulse heat it; at the same time, the controller (10) sends a command to the water pump (8) to start the water pump (8) until the temperature of the intake pipe (2) is less than or equal to the high temperature threshold.

3. The methanol engine gas valve electromagnetic induction heater according to claim 2, characterized in that: The temperature sensor (11) detects the temperature of the intake pipe (2) in real time and transmits the temperature signal to the controller (10). When the temperature of the intake pipe (2) is greater than or equal to the high temperature warning critical value, the controller (10) triggers a high temperature alarm, and simultaneously cuts off the power module (9) and keeps the water pump (8) running continuously until the temperature of the intake pipe (2) is less than the high temperature warning critical value.

4. The methanol engine gas valve electromagnetic induction heater according to claim 2, characterized in that: The on-off ratio of intermittent pulse heating is 1:2, the on-time of each pulse is 100ms, and the off-time of each pulse is 200ms.

5. The electromagnetic induction temperature-controlled methanol engine according to claim 1, characterized in that: The magnetizer (5) is arranged in a hollow tubular shape as a whole. The outer diameter of the magnetizer (5) is equal to the outer diameter of the air intake pipe (2), and the inner diameter of the magnetizer (5) is equal to the inner diameter of the air intake pipe (2).

6. The methanol engine gas valve electromagnetic induction heater according to claim 5, characterized in that: A plurality of groups of heat transfer plates (12) are arranged inside the magnetic conductor (5), and the plurality of groups of heat transfer plates (12) are stacked and distributed along the axial direction of the magnetic conductor (5).

7. The methanol engine gas valve electromagnetic induction heater according to claim 6, characterized in that: The heat transfer sheet (12) is in an annular sheet structure as a whole, and the outer wall of the heat transfer sheet (12) is arranged to fit the inner wall of the magnetic conductor (5). A notch (13) is provided on the heat transfer sheet (12).

8. The methanol engine gas valve electromagnetic induction heater according to claim 7, characterized in that: A bent U-shaped tube is provided at one end of the cooling channel (7), and the bent U-shaped tube comprises two longitudinal straight tube portions parallel to each other and an arc-shaped bent tube portion connecting the two longitudinal straight tube portions.

9. The methanol engine gas valve electromagnetic induction heater according to claim 8, characterized in that: The cooling channel (7) passes through the slots (13) on the plurality of groups of heat transfer plates (12), a cooling liquid is provided inside the cooling channel (7), and the cooling channel (7) passes through the magnetizer (5) and is connected to the water pump (8).

10. A methanol engine equipped with a methanol engine valve electromagnetic induction heater according to any one of claims 1 to 9, comprising an engine frame (1), an intake pipe (2) and an exhaust pipe (3) being arranged inside the engine frame (1), and a valve rocker arm (4) being arranged between the intake pipe (2) and the exhaust pipe (3), characterized in that: A magnetic conductor (5) is arranged on the air intake pipe (2), an electromagnetic induction coil (6) is arranged around the outer surface of the magnetic conductor (5), an insulating heat insulation layer is arranged outside the electromagnetic induction coil (6), a cooling channel (7) is arranged inside the air intake pipe (2), a water pump (8) is arranged on the cooling channel (7), a power module (9) is arranged on the electromagnetic induction coil (6), a controller (10) is arranged on the power module (9), a temperature sensor (11) is arranged on one side of the air intake pipe (2) in conjunction with the controller (10), the temperature sensor (11), the power module (9) and the water pump (8) are all electrically connected to the controller (10), and the controller (10) has a preset low temperature threshold, a high temperature threshold and a high temperature warning critical value. The temperature sensor (11) is fixedly arranged inside the engine frame (1) and the temperature sensor (11) is arranged close to the intake pipe (2). The controller (10), the power module (9) and the water pump (8) are all fixedly arranged outside the engine frame (1). The end of the cooling channel (7) away from the magnetizer (5) passes through the side wall of the engine frame (1) and is fixedly connected to the water pump (8). The end of the electromagnetic induction coil (6) away from the magnetizer (5) passes through the side wall of the engine frame (1) and is fixedly connected to the power module (9).

Images