Carbon-neutral fuel engine and vehicle having the same

Abstract

The present invention provides a carbon-neutral fuel engine and a vehicle having the same. The carbon-neutral fuel engine includes: a carbon-neutral fuel tank in which a carbon-neutral fuel is stored, and an outlet end of the carbon-neutral fuel tank is selectively communicated with or closed to a fuel injector; a cooling chamber, an inlet end of the cooling chamber is communicated with the carbon-neutral fuel tank, and an outlet end of the cooling chamber is selectively communicated with or closed to the fuel injector. When the outlet end of the cooling chamber is communicated with the fuel injector, the cooling chamber can perform a cooling operation on the carbon-neutral fuel passing through the cooling chamber; a heating chamber, an inlet end of the heating chamber is communicated with the carbon-neutral fuel tank, and an outlet end of the heating chamber is selectively communicated with or closed to the fuel injector. When the outlet end of the heating chamber is communicated with the fuel injector, the heating chamber can perform a heating operation on the carbon-neutral fuel passing through the heating chamber. This application effectively solves the problems of difficult cold start of the carbon-neutral fuel engine in a low-temperature environment and vapor lock phenomenon in a high-temperature environment.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon-neutral fuel engine design, and more particularly, to a carbon-neutral fuel engine and a vehicle having the same. Background Art

[0002] With the continuous promotion of the "dual carbon" goal, the automotive industry and the internal combustion engine industry are facing huge changes, and an energy-saving and carbon-reducing ecological system centered on green energy is also being continuously constructed. The combustion of traditional fossil fuels such as gasoline and diesel will pollute the environment and cannot meet the green, environmentally friendly, and low-carbon development model advocated by the "dual carbon" strategy.

[0003] In view of the current situation, the main measures at present include using power batteries, hybrid power, hydrogen fuel cells, hydrogen engines, etc. to replace traditional engines. However, the power source of power batteries is mainly supplied in the form of thermal power generation, and the coal used in thermal power generation still belongs to fossil fuels, and essentially does not reduce carbon emissions. Although hybrid vehicles improve the thermal efficiency of the engine, they still cause a certain amount of carbon emissions. The hydrogen required for hydrogen engines is usually obtained by electrolyzing water, and there will be relatively large energy losses during the electrolysis process. Metal platinum is also used as a catalyst in the hydrogen fuel cell power generation process. As a rare metal, metal platinum has the defects of low yield and high price, making the cost of fuel cells relatively high. When hydrogen is directly used as a fuel in an engine, since hydrogen fuel usually exists in the form of gaseous fuel, more gas storage space is required compared to liquid fuels such as gasoline and diesel to achieve the same driving mileage, which will have a great impact on the overall layout of the vehicle. From the perspective of safety, hydrogen energy is the molecule with the smallest volumetric energy density, which is easy to leak and the explosion range is relatively large. If it leaks in a confined space, it will pose a great safety hazard. Carbon-neutral fuels can overcome the above-mentioned disadvantages and achieve true low-carbon emissions while having high safety.

[0004] Due to the influence of its own physical properties, carbon-neutral fuel itself has strong volatility in a high-temperature environment. If carbon-neutral fuel is used as engine fuel and stored in a fuel tank, when the carbon-neutral fuel in the fuel tank is exposed to the sun for a long time, the volatile gaseous carbon-neutral fuel is likely to generate negative pressure, resulting in blockages in the fuel tank, exhaust valve, and intake valve. This vapor lock phenomenon will cause insufficient vehicle power and seriously affect vehicle drivability. On the other hand, carbon-neutral fuel has a large latent heat of vaporization value, which is much higher than that of gasoline, and has a lower evaporation rate at the same temperature and is greatly affected by temperature. Therefore, in a low-temperature environment, due to insufficient evaporation, the concentration of the combustible mixture cannot reach the ignition point, resulting in difficulties in cold starting the carbon-neutral fuel engine. In terms of power performance, since the calorific value of carbon-neutral fuel is relatively low, the power performance of the engine using carbon-neutral fuel will decline compared to that using traditional fuel. Therefore, there will be a situation of insufficient power in some special working conditions such as accelerating and overtaking when urgent power is needed.

[0005] In view of the above problems in the prior art, no effective solution has been proposed yet. Summary of the Invention

[0006] The main object of the present invention is to provide a carbon-neutral fuel engine and a vehicle having the same, so as to solve the problems of difficult cold starting of the carbon-neutral fuel engine in a low-temperature environment and vapor lock phenomenon in a high-temperature environment in the prior art.

[0007] To achieve the above object, according to one aspect of the present invention, there is provided a carbon-neutral fuel engine, including: a carbon-neutral fuel tank, in which carbon-neutral fuel is stored, and the outlet end of the carbon-neutral fuel tank is selectively communicated with or closed to a fuel injector; a cooling chamber, the inlet end of the cooling chamber is communicated with the carbon-neutral fuel tank, and the outlet end of the cooling chamber is selectively communicated with or closed to the fuel injector. When the outlet end of the cooling chamber is communicated with the fuel injector, the cooling chamber can perform a cooling operation on the carbon-neutral fuel passing through the cooling chamber; a heating chamber, the inlet end of the heating chamber is communicated with the carbon-neutral fuel tank, and the outlet end of the heating chamber is selectively communicated with or closed to the fuel injector. When the outlet end of the heating chamber is communicated with the fuel injector, the heating chamber can perform a heating operation on the carbon-neutral fuel passing through the heating chamber.

[0008] Further, the cooling chamber includes: a cooling housing, on the outer surface of which a plurality of fins are provided; a cooling corrugated wall tube, which is located inside the cooling housing, and both ends of the cooling corrugated wall tube are communicated with the outlet end of the carbon-neutral fuel tank and the fuel injector respectively; a cooling fan, which is located inside the cooling housing and is arranged close to the cooling corrugated wall tube, and the cooling fan can perform a cooling operation on the carbon-neutral fuel inside the cooling corrugated wall tube.

[0009] Further, the heating chamber includes: a heating housing; a heating corrugated wall tube located inside the heating housing, with both ends of the heating corrugated wall tube communicating with the outlet end of the carbon-neutral fuel tank and the fuel injector respectively. An electric heating wire is provided inside the heating corrugated wall tube, and the electric heating wire can perform a heating operation on the carbon-neutral fuel inside the heating corrugated wall tube.

[0010] Further, the carbon-neutral fuel engine further includes: a fuel tank, the outlet end of the fuel tank communicates with the fuel injector, and a first valve is provided between the outlet end of the fuel tank and the fuel injector.

[0011] Further, a cooling water pump and a second valve are sequentially provided on the pipeline between the outlet end of the cooling chamber and the fuel injector, and the cooling chamber is selectively communicable with or closed to the fuel injector through the second valve.

[0012] Further, a heating water pump and a third valve are sequentially provided on the pipeline between the outlet end of the heating chamber and the fuel injector, and the heating chamber is selectively communicable with or closed to the fuel injector through the third valve.

[0013] Further, a fourth valve is provided on the pipeline between the outlet end of the carbon-neutral fuel tank and the fuel injector, and the outlet end of the carbon-neutral fuel tank is selectively communicable with or closed to the fuel injector through the fourth valve.

[0014] Further, the carbon-neutral fuel engine further includes: a temperature sensor provided in the carbon-neutral fuel tank; a controller, and the controller is electrically connected to the temperature sensor, the first valve, the second valve, the third valve, the fourth valve, the cooling water pump and the heating water pump.

[0015] Further, the cooling housing is made of a heat dissipation material, and / or the heating housing is made of a heat insulation material.

[0016] According to another aspect of the present invention, a vehicle is provided, including a carbon-neutral fuel engine, and the carbon-neutral fuel engine is the above-mentioned carbon-neutral fuel engine.

[0017] Applying the technical solution of the present invention, by performing a cooling operation on the carbon-neutral fuel passing through the cooling chamber or by performing a heating operation on the carbon-neutral fuel passing through the heating chamber, the carbon-neutral fuel engine can effectively control the temperature of the carbon-neutral fuel through thermal management, so that the carbon-neutral fuel will always be in the optimal combustion temperature range, thereby avoiding problems such as vapor lock affecting the dynamic performance at high ambient temperatures or difficult cold start at low temperatures, and enabling the carbon-neutral fuel engine to always be in the best working state. Adopting the technical solution of the present application effectively solves the problems of difficult cold start of the carbon-neutral fuel engine in the prior art at low temperatures and vapor lock at high temperatures. Description of the Drawings

[0018] The accompanying drawings of the specification, which form a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic structural diagram of an embodiment of a carbon-neutral fuel engine according to the present invention is shown;

[0020] Figure 2 A schematic control flow diagram of a first embodiment of a carbon-neutral fuel engine according to the present invention is shown;

[0021] Figure 3 A schematic control flow diagram of a second embodiment of a carbon-neutral fuel engine according to the present invention is shown.

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 1. Carbon-neutral fuel tank; 2. Cooling chamber; 3. Heating chamber; 4. Fuel tank; 5. Cooling wave wall tube; 6. Cooling fan; 7. Fins; 8. Electric heating wire; 9. Second valve; 10. Third valve; 11. Fourth valve; 12. First valve; 13. Cooling water pump; 14. Heating water pump; 15. Fuel injector; 16. Valve; 17. Piston; 18. Spark plug; 19. Temperature sensor; 20. Heating wave wall tube. Detailed implementation manners

[0024] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary implementation manners according to this application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0027] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present application is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and thus their description will be omitted.

[0028] In the prior art with the patent publication number CN106481462A, a cold start system for a methanol engine is disclosed. This solution sprays methanol and gasoline fuels simultaneously during the cold start phase of the methanol engine, which can not only solve the problem of difficult cold start of the methanol engine, but also solve the problems of engine knocking and pre-ignition during starting with gasoline fuel in the cold start phase. This design uses gasoline for auxiliary combustion in the cold start phase, but in a low-temperature environment, due to the low temperature of the combustion chamber wall surface, flame quenching or incomplete combustion of gasoline will occur in some areas, which will greatly increase pollutant emissions. By adopting the technical solution of the present application, even in the cold start phase, cold start can be completed using carbon-neutral fuel, and there will be no increase in pollutants due to incomplete combustion of gasoline.

[0029] In the prior art with the patent publication number CN103615345A, a cooling system for a flexible fuel vehicle is disclosed. This solution solves the cold start problem by heating ethanol fuel in the engine injector using an injector with a preheating function, but this method cannot instantaneously heat ethanol fuel from a relatively low temperature to the optimal combustion temperature, and the heating efficiency is relatively low, which is limited in helping the engine cold start. By adopting the technical solution of the present application, the carbon-neutral fuel can always be in the optimal working temperature range, without the need to instantaneously heat from a relatively low ambient temperature to a relatively high temperature, thus greatly helping the engine cold start.

[0030] In the prior art with the patent publication number CN111197532A, a hydrogen / methanol composite fuel engine is disclosed. This solution utilizes the advantage that methanol can be reformed to produce hydrogen from methanol. Hydrogen is used as fuel during cold start, and after cold start is completed, a mixed combustion mode of hydrogen and methanol is adopted to increase the calorific value of the fuel. However, the process of producing hydrogen from methanol is relatively complex and has certain safety hazards. Additionally, since hydrogen exists in gaseous form, a relatively large hydrogen storage tank needs to be equipped on the vehicle, which has a great impact on the spatial layout of the whole vehicle. By adopting the technical solution of the present application, the structure is simple, and whether it is a carbon-neutral fuel or gasoline, diesel, etc., they all exist in liquid form and do not occupy too much space.

[0031] The above-mentioned technical solution has poor effects or generates new problems while solving the corresponding problems, so it is difficult to be actually applied to a carbon-neutral fuel engine. For how to solve the problems of low-temperature cold start and high-temperature vapor lock phenomenon of a carbon-neutral fuel engine while ensuring the safety of the power system has become a technical solution urgently needed to be solved in the industry.

[0032] Combined with Figure 1 as shown, according to a specific embodiment of the present application, a carbon-neutral fuel engine is provided.

[0033] The carbon-neutral fuel engine includes: a carbon-neutral fuel tank 1, a cooling chamber 2, and a heating chamber 3. The carbon-neutral fuel tank 1 stores carbon-neutral fuel inside. The outlet end of the carbon-neutral fuel tank 1 is selectively connected or closed to a fuel injector 15. The inlet end of the cooling chamber 2 is connected to the carbon-neutral fuel tank 1. The outlet end of the cooling chamber 2 is selectively connected or closed to the fuel injector 15. When the outlet end of the cooling chamber 2 is connected to the fuel injector 15, the cooling chamber 2 can perform a cooling operation on the carbon-neutral fuel passing through the cooling chamber 2. The inlet end of the heating chamber 3 is connected to the carbon-neutral fuel tank 1. The outlet end of the heating chamber 3 is selectively connected or closed to the fuel injector 15. When the outlet end of the heating chamber 3 is connected to the fuel injector 15, the heating chamber 3 can perform a heating operation on the carbon-neutral fuel passing through the heating chamber 3.

[0034] Applying the technical solution of this embodiment, the cooling chamber 2 can perform a cooling operation on the carbon-neutral fuel passing through the cooling chamber 2, or the heating chamber 3 can perform a heating operation on the carbon-neutral fuel passing through the heating chamber 3, enabling the carbon-neutral fuel engine to effectively control the thermal management temperature of the carbon-neutral fuel. The carbon-neutral fuel will always be in the optimal combustion temperature range, thus avoiding problems such as vapor lock affecting the dynamic performance at high ambient temperatures or difficult cold start in low-temperature situations, and keeping the carbon-neutral fuel engine always in the best working state. Adopting the technical solution of this application effectively solves the problems of difficult cold start of the carbon-neutral fuel engine in low-temperature environments and vapor lock in high-temperature environments in the prior art.

[0035] Using carbon-neutral fuel as the engine fuel can ensure the safety of the power system while meeting the requirements of the "dual carbon" strategy. The carbon-neutral fuel exists in the form of a liquid fuel, which is convenient for storage and transportation and has a higher theoretical energy density. The carbon-neutral fuel can be directly produced using only sunlight and air, and the carbon dioxide released during combustion is the same as that used in the production of carbon-neutral fuel before, and can even be optimized to negative carbon emissions. Therefore, using carbon-neutral fuel as the engine fuel can fundamentally solve the problems of engine carbon emissions and pollutant emissions. Regarding the problems that the carbon-neutral fuel is prone to volatilization in high-temperature environments, resulting in blockage of the intake and exhaust valves and vapor lock affecting the power performance, and difficult atomization in low-temperature environments leading to difficult cold start, etc., the technical solution of this application controls the carbon-neutral fuel to always be in the optimal working temperature range through the thermal management control system, ensuring the efficient combustion of the carbon-neutral fuel, and thus enabling the engine to always work efficiently.

[0036] Further, the cooling chamber 2 includes: a cooling housing, a cooling corrugated wall tube 5, and a cooling fan 6. A plurality of fins 7 are provided on the outer surface of the cooling housing. The cooling corrugated wall tube 5 is located inside the cooling housing, and both ends of the cooling corrugated wall tube 5 are respectively connected to the outlet end of the carbon-neutral fuel tank 1 and the fuel injector 15; the cooling fan 6 is located inside the cooling housing, and the cooling fan 6 is arranged close to the cooling corrugated wall tube 5. The cooling fan 6 can perform a cooling operation on the carbon-neutral fuel inside the cooling corrugated wall tube 5. Such a setting can significantly improve the cooling effect of the cooling chamber 2. The special structure of the cooling corrugated wall tube 5 can enhance the flow field disturbance and improve the cooling efficiency.

[0037] Further, the heating chamber 3 includes: a heating housing, a heating corrugated wall tube 20. The heating corrugated wall tube 20 is located inside the heating housing, and both ends of the heating corrugated wall tube 20 are respectively connected to the outlet end of the carbon-neutral fuel tank 1 and the fuel injector 15. An electric heating wire 8 is arranged inside the heating corrugated wall tube 20. The electric heating wire 8 can perform a heating operation on the carbon-neutral fuel inside the heating corrugated wall tube 20. The heating corrugated wall tube 20 can accelerate the heat transfer in the heating chamber and effectively improve the heating effect of the heating chamber 3.

[0038] In an alternative embodiment, the carbon-neutral fuel is stored in the carbon-neutral fuel tank 1. The carbon-neutral fuel tank 1 is made of heat-insulating material to keep the carbon-neutral fuel in the carbon-neutral fuel tank 1 within the optimal operating temperature range as much as possible. The carbon-neutral fuel tank 1 is connected to a temperature regulating device, which is divided into two parts: a cooling chamber 2 and a heating chamber 3. The controller will select the corresponding temperature regulating method according to the actual temperature of the carbon-neutral fuel. The cooling chamber 2 is equipped with a cooling fan 6 for cooling the high-temperature carbon-neutral fuel. The cooling chamber 2 is entirely made of a material that is easy to dissipate heat. Fins 7 are installed on the outer wall surface to increase the heat transfer area and improve the heat transfer capacity. The internal flow channel adopts the structural design of a corrugated wall tube. The corrugated wall tube can enhance the flow field disturbance and improve the cooling efficiency due to its special structure. The internal flow channel of the heating chamber 3 also adopts the structural design of a corrugated wall tube. An electric heating wire 8 is arranged inside the flow channel for heating the low-temperature carbon-neutral fuel. The corrugated wall tube can accelerate the heat transfer due to its special structure, enabling the carbon-neutral fuel in the carbon-neutral fuel tank 1 to quickly return to the normal temperature range. The heating chamber 3 is entirely made of heat-insulating material, thereby ensuring that the heat generated by the electric heating wire can be fully utilized by the low-temperature carbon-neutral fuel. Figure 1 A valve 16 is also shown therein.

[0039] As Figure 2 The schematic diagram of the control process of one embodiment of the carbon-neutral fuel engine is shown. When the external ambient temperature is relatively high, the carbon-neutral fuel in the carbon-neutral fuel tank 1 may be exposed to high temperatures for a long time, resulting in the temperature of the carbon-neutral fuel inside being higher than the set temperature range. At this time, the temperature sensor 19 of the carbon-neutral fuel in the carbon-neutral fuel tank 1 will detect the high-temperature signal and transmit the high-temperature signal to the corresponding controller of the cooling chamber 2. The controller turns on the cooling chamber valve (i.e., the second valve 9), the cooling water pump 13, and the cooling fan 6, so that the cooling chamber 2 and the carbon-neutral fuel tank 1 are connected through a pipeline to form a carbon-neutral fuel cooling circulation loop. The cooling fan cools the high-temperature carbon-neutral fuel, enabling the carbon-neutral fuel to quickly return to the normal operating temperature range.

[0040] When the external ambient temperature is relatively low, the carbon-neutral fuel in the carbon-neutral fuel tank 1 is frozen at a low temperature for a long time, resulting in a temperature lower than the set temperature range. At this time, the temperature sensor 19 in the carbon-neutral fuel tank 1 will detect the low-temperature signal and transmit the low-temperature signal to the corresponding controller of the heating chamber 3. The controller turns on the heating chamber valve (i.e., the third valve 10), the heating water pump 14, and the heating function of the electric heating wire 8, so that the heating chamber 3 and the carbon-neutral fuel tank 1 are connected through a pipeline to form a carbon-neutral fuel heating circulation loop. The electric heating wire heats the low-temperature carbon-neutral fuel, enabling the carbon-neutral fuel to quickly return to the normal operating temperature range.

[0041] Furthermore, the carbon-neutral fuel engine further includes: a fuel tank 4. The outlet end of the fuel tank 4 is communicated with the fuel injector 15, and a first valve 12 is arranged between the outlet end of the fuel tank 4 and the fuel injector 15. The fuel tank 4 and the fuel injector 15 are selectively communicated or closed through the first valve 12. In some special working conditions such as accelerating to overtake or climbing a slope where instant power boost is required, since the carbon-neutral fuel has a relatively low calorific value, its instantaneous acceleration ability is relatively weak, and more carbon-neutral fuel is required to generate the same power compared with gasoline. By supplying gasoline from the fuel tank 4 to the fuel injector 15, gasoline is used to replace the carbon-neutral fuel for a short time to obtain power boost in some special working conditions where instant power boost is required. Since gasoline is only used to provide power in special cases and the duration is short, its carbon emissions are negligible, which not only meets the power performance but also improves the economy, and brings a better and richer driving experience to customers.

[0042] As Figure 3 Fig. shows a schematic diagram of the control process of another embodiment of the carbon-neutral fuel engine. When the vehicle is in special working conditions such as accelerating to overtake or climbing a slope, the controller will judge whether to switch the fuel to gasoline or adopt a working mode in which carbon-neutral fuel and gasoline are respectively injected into different cylinders according to the opening signal of the accelerator pedal. When the opening of the accelerator pedal exceeds the set limit value, the controller will select different working modes according to different openings. For a four-cylinder engine, when the opening of the accelerator pedal exceeds 80%, a working mode in which cylinders 1, 2, and 3 inject carbon-neutral fuel and cylinder 4 injects gasoline is adopted; when the opening of the accelerator pedal exceeds 85%, a working mode in which cylinders 1 and 2 inject carbon-neutral fuel and cylinders 3 and 4 inject gasoline is adopted; when the opening of the accelerator pedal exceeds 90%, a working mode in which cylinders 1, 2, and 3 inject gasoline and cylinder 4 injects carbon-neutral fuel is adopted; when the opening of the accelerator pedal exceeds 95%, the engine uses all gasoline. The present invention better ensures the economy on the basis of ensuring the power performance, and the carbon emissions generated are also negligible.

[0043] When the vehicle is in special working conditions such as accelerating to overtake or climbing a slope, the engine electronic control unit ECU will judge whether to switch the fuel to gasoline or adopt a working mode in which carbon-neutral fuel and gasoline are respectively injected into different cylinders according to the opening signal of the accelerator pedal.

[0044] The specific working mode setting is related to the number of engine cylinders, the arrangement form, etc. Taking an in-line four-cylinder engine as an example, when the electronic control unit ECU detects that the throttle pedal opening is less than 80%, the first valves 12 of all four cylinders are closed, and the engine only uses carbon-neutral fuel; when the electronic control unit ECU detects that the throttle pedal opening is greater than 80% and less than 85%, a working mode of injecting carbon-neutral fuel into 3 cylinders and gasoline into 1 cylinder is adopted. At this time, the fourth valves 11 of 3 out of the 4 cylinders are opened, the first valves 12 are closed, the fourth valve 11 of 1 cylinder is closed, and the first valve 12 is opened. The fuel injector 15 injects carbon-neutral fuel or gasoline into the combustion chamber, and the spark plug 18 ignites to complete the work process. If diesel is used to replace gasoline, the spark plug 18 can be cancelled, and the work process can be completed by the compression ignition of the piston 17. When the electronic control unit ECU detects that the throttle pedal opening is greater than or equal to 85% and less than 90%, a working mode of injecting carbon-neutral fuel into 2 cylinders and gasoline into 2 cylinders is adopted; when the electronic control unit ECU detects that the throttle pedal opening is greater than or equal to 90% and less than 95%, a working mode of injecting carbon-neutral fuel into 1 cylinder and gasoline into 3 cylinders is adopted; when the electronic control unit ECU detects that the throttle pedal opening is greater than or equal to 95%, all 4 cylinders inject gasoline. At this time, the fourth valves 11 corresponding to the 4 cylinders are all closed, and the first valves 12 are all opened. For engines with different cylinders and different arrangement methods, the proportion and number of cylinders injecting carbon-neutral fuel and gasoline respectively under different working conditions can be reasonably allocated according to the actual situation.

[0045] A cooling water pump 13 and a second valve 9 are sequentially arranged on the pipeline between the outlet end of the cooling chamber 2 and the fuel injector 15. The cooling chamber 2 is selectively communicated with or closed to the fuel injector 15 through the second valve 9.

[0046] Specifically, a heating water pump 14 and a third valve 10 are sequentially arranged on the pipeline between the outlet end of the heating chamber 3 and the fuel injector 15. The heating chamber 3 is selectively communicated with or closed to the fuel injector 15 through the third valve 10.

[0047] Further, a fourth valve 11 is arranged on the pipeline between the outlet end of the carbon-neutral fuel tank 1 and the fuel injector 15. The outlet end of the carbon-neutral fuel tank 1 is selectively communicated with or closed to the fuel injector 15 through the fourth valve 11.

[0048] Further, the carbon-neutral fuel engine further includes: a temperature sensor 19 and a controller. The temperature sensor 19 is arranged on the carbon-neutral fuel tank 1. The controller is electrically connected to the temperature sensor 19, the first valve 12, the second valve 9, the third valve 10, the fourth valve 11, the cooling water pump 13 and the heating water pump 14.

[0049] The carbon-neutral fuel tank 1 is made of heat-insulating material to keep the carbon-neutral fuel in the fuel tank within the optimal operating temperature range as much as possible. When the carbon-neutral fuel temperature sensor 19 detects that the temperature of the carbon-neutral fuel in the fuel tank is higher than the set optimal operating temperature range, the engine electronic control unit ECU controls the second valve 9 to open and controls the coolant pump 13 and the cooling fan 6 to start working. The coolant pump 13 pumps the high-temperature carbon-neutral fuel in the fuel tank into the cooling chamber 2. The cooling chamber is made of a material that is easy to dissipate heat, and fins 7 are arranged on the outer wall. The fins can accelerate heat dissipation by increasing the heat dissipation area. The internal flow channel of the cooling chamber is designed with a corrugated wall tube structure. The corrugated wall tube can enhance the flow field disturbance and improve the cooling efficiency due to its special structure. When the carbon-neutral fuel temperature sensor detects that the temperature of the carbon-neutral fuel in the fuel tank has returned to the optimal operating temperature range, the engine electronic control unit ECU controls the cooling fan 6 and the coolant pump 13 to stop working and controls the second valve 9 to close, completing the cooling process of the carbon-neutral fuel.

[0050] When the carbon-neutral fuel temperature sensor 19 detects that the temperature of the carbon-neutral fuel in the fuel tank is lower than the set optimal operating temperature range, the engine electronic control unit ECU controls the third valve 10 to open and controls the heating pump 14 and the electric heating wire 8 to start working. The heating pump 14 pumps the low-temperature carbon-neutral fuel in the fuel tank into the heating chamber 3. The heating chamber is made of heat-insulating material to ensure that the heat generated by the electric heating wire 8 can be fully utilized by the low-temperature carbon-neutral fuel. The internal flow channel of the heating chamber also adopts a corrugated wall tube structure design to accelerate heat transfer. When the carbon-neutral fuel temperature sensor detects that the temperature of the carbon-neutral fuel in the fuel tank has returned to the optimal operating temperature range, the engine electronic control unit ECU controls the electric heating wire 8 and the heating pump 14 to stop working and controls the third valve 10 to close, completing the heating process of the carbon-neutral fuel.

[0051] Furthermore, the cooling housing is made of heat-dissipating material, and / or the heating housing is made of heat-insulating material. The heating housing is made of heat-insulating material to ensure that the heat generated by the electric heating wire can be fully utilized by the low-temperature carbon-neutral fuel and is not easily dissipated outdoors. The internal flow channel of the heating chamber also adopts a corrugated wall tube structure design to accelerate the heat transfer in the heating chamber. The cooling housing is made of a material that is easy to dissipate heat, and fins are arranged on the outer wall. The fins can accelerate heat dissipation by increasing the heat dissipation area. The internal flow channel of the cooling chamber is designed with a corrugated wall tube structure. The corrugated wall tube can enhance the flow field disturbance and improve the cooling efficiency due to its special structure.

[0052] According to another specific embodiment of the present invention, a vehicle is provided, including a carbon-neutral fuel engine, and the carbon-neutral fuel engine is the carbon-neutral fuel engine in the above embodiment.

[0053] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: When the vehicle is exposed to high temperatures in a hot environment, when the temperature of the carbon-neutral fuel in the carbon-neutral fuel tank 1 exceeds the set temperature range, the controller will control the cooling fan to be turned on to cool the carbon-neutral fuel, preventing the carbon-neutral fuel from evaporating and gasifying at high temperatures and affecting the vehicle's power performance; when the vehicle is cold-started in a low-temperature environment, when the temperature of the carbon-neutral fuel in the carbon-neutral fuel tank 1 is lower than the set temperature range, the controller will control the electric heating wire to be turned on to heat the carbon-neutral fuel, preventing the vehicle from failing to start due to insufficient evaporation of the carbon-neutral fuel at low temperatures.

[0054] With the technical solution of the present application, for the problem that the instantaneous acceleration ability of carbon-neutral fuel is relatively poor under special working conditions such as accelerating to overtake and climbing slopes, and more carbon-neutral fuel is consumed to generate the same power compared with gasoline and diesel, resulting in poor economy, the present invention adopts a mode in which gasoline, diesel, or a combination of carbon-neutral fuel and gasoline / diesel works together for a short time to temporarily improve the power performance under special working conditions such as accelerating to overtake and climbing slopes. Since gasoline or diesel is only used under some special working conditions and the usage time is short, the carbon emissions are negligible, thus bringing better economy on the basis of meeting extremely low carbon emissions. By controlling the proportion and timing of different fuel supplies, the potential problem of weakened power performance caused by using carbon-neutral fuel can be overcome on the basis of fully leveraging the low-emission advantages of carbon-neutral fuel, enabling the engine to truly balance carbon emissions and economy and having great value in industrial applications.

[0055] With the technical solution of the present application, when the external environmental temperature is relatively high, the fuel tank of the carbon-neutral fuel engine may be exposed to high temperatures for a long time, resulting in the temperature of the carbon-neutral fuel inside being higher than the set optimal operating temperature range. At this time, the water temperature sensor in the fuel tank will detect the high-temperature signal and transmit it to the engine electronic control unit ECU. The ECU controls the cooling chamber valve, water pump, and cooling fan to turn on, so that the cooling chamber and the fuel tank are connected through pipelines to form a carbon-neutral fuel cooling circulation loop. The cooling fan cools the high-temperature carbon-neutral fuel, enabling the carbon-neutral fuel to quickly return to the normal operating temperature range. When the carbon-neutral fuel returns to the optimal operating temperature range, the ECU controls the cooling chamber valve to close, and the water pump and cooling fan stop working, ending the carbon-neutral fuel cooling circulation.

[0056] With the technical solution of the present application, when the ambient temperature is relatively low, the carbon-neutral fuel in the fuel tank is frozen at a low temperature for a long time, resulting in a temperature lower than the set optimal operating temperature range. At this time, the water temperature sensor in the fuel tank will detect the low-temperature signal and transmit the low-temperature signal to the engine electronic control unit (ECU). The ECU controls the opening of the heating chamber valve, water pump, and electric heating wire heating function, so that the heating chamber and the fuel tank are connected through pipelines to form a carbon-neutral fuel heating circulation loop. The electric heating wire heats the low-temperature carbon-neutral fuel, so that the carbon-neutral fuel quickly returns to the normal operating temperature range. When the carbon-neutral fuel returns to the optimal operating temperature range, the ECU controls the closing of the heating chamber valve, and the water pump and electric heating wire stop working, ending the carbon-neutral fuel heating cycle.

[0057] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "above" can be used here to describe the spatial position relationship of one device or feature to other devices or features as shown in the figure. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations of the spatial relative descriptions used here will be made.

[0058] In addition to the above, it should also be noted that the "one embodiment", "another embodiment", "embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in connection with the embodiment being included in at least one embodiment generally described in the present application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

[0059] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A carbon-neutral fuel engine, characterized in that, Comprising: A carbon-neutral fuel tank (1) which stores carbon-neutral fuel inside, and the outlet end of the carbon-neutral fuel tank (1) is selectively connected or closed to a fuel injector (15); A cooling chamber (2) whose inlet end is connected to the carbon-neutral fuel tank (1), and the outlet end of the cooling chamber (2) is selectively connected or closed to the fuel injector (15). When the outlet end of the cooling chamber (2) is connected to the fuel injector (15), the cooling chamber (2) can perform a cooling operation on the carbon-neutral fuel passing through the cooling chamber (2); A heating chamber (3) whose inlet end is connected to the carbon-neutral fuel tank (1), and the outlet end of the heating chamber (3) is selectively connected or closed to the fuel injector (15). When the outlet end of the heating chamber (3) is connected to the fuel injector (15), the heating chamber (3) can perform a heating operation on the carbon-neutral fuel passing through the heating chamber (3). The cooling chamber (2) includes: A cooling housing whose outer surface is provided with a plurality of fins (7); A cooling corrugated wall tube (5) which is located inside the cooling housing, and both ends of the cooling corrugated wall tube (5) are respectively connected to the outlet end of the carbon-neutral fuel tank (1) and the fuel injector (15); A cooling fan (6) which is located inside the cooling housing, and the cooling fan (6) is arranged close to the cooling corrugated wall tube (5). The cooling fan (6) can perform a cooling operation on the carbon-neutral fuel inside the cooling corrugated wall tube (5).

2. The carbon-neutral fuel engine according to claim 1, wherein, The heating chamber (3) includes: A heating housing; A heating corrugated wall tube (20) which is located inside the heating housing, and both ends of the heating corrugated wall tube (20) are respectively connected to the outlet end of the carbon-neutral fuel tank (1) and the fuel injector (15). An electric heating wire (8) is arranged inside the heating corrugated wall tube (20), and the electric heating wire (8) can perform a heating operation on the carbon-neutral fuel inside the heating corrugated wall tube (20).

3. The carbon-neutral fuel engine according to claim 2, wherein The carbon-neutral fuel engine further includes: A fuel tank (4) whose outlet end is connected to the fuel injector (15), and a first valve (12) is arranged between the outlet end of the fuel tank (4) and the fuel injector (15).

4. The carbon-neutral fuel engine according to claim 3, characterized in that, A cooling water pump (13) and a second valve (9) are sequentially arranged on the pipeline between the outlet end of the cooling chamber (2) and the fuel injector (15), and the cooling chamber (2) is selectively connected or closed to the fuel injector (15) through the second valve (9).

5. The carbon-neutral fuel engine according to claim 4, characterized in that, A heating water pump (14) and a third valve (10) are sequentially arranged on the pipeline between the outlet end of the heating chamber (3) and the fuel injector (15), and the heating chamber (3) is selectively connected or closed to the fuel injector (15) through the third valve (10).

6. The carbon-neutral fuel engine according to claim 5, characterized in that, A fourth valve (11) is provided on the pipeline between the outlet end of the carbon-neutral fuel tank (1) and the fuel injector (15), and the outlet end of the carbon-neutral fuel tank (1) is selectively communicated with or closed to the fuel injector (15) through the fourth valve (11).

7. The carbon-neutral fuel engine according to claim 6, wherein, The carbon-neutral fuel engine further includes: a temperature sensor (19), the temperature sensor (19) being provided on the carbon-neutral fuel tank (1); a controller, the controller being electrically connected to the temperature sensor (19), the first valve (12), the second valve (9), the third valve (10), the fourth valve (11), the cooling water pump (13) and the heating water pump (14).

8. The carbon-neutral fuel engine according to claim 2, characterized in that, The cooling housing is made of a heat dissipation material, and / or the heating housing is made of a heat preservation material.

9. A vehicle, comprising a carbon-neutral fuel engine, characterized in that, The carbon-neutral fuel engine is the carbon-neutral fuel engine according to any one of claims 1 to 8.

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