Gas supply system and transmission thermal management system, vehicle and thermal management methods

Abstract

This application relates to a gas supply system and a transmission thermal management system, a vehicle, and a thermal management method. It includes: a gas reservoir assembly, the output end of which is connected to the inlet of a three-way control valve; a gas water bath vaporizer, the gas pipe inlet of which is connected to the first outlet of the three-way control valve; and a gas oil bath vaporizer, the gas pipe inlet of which is connected to the second outlet of the three-way control valve, and the gas pipe outlet of which is connected to the gas pipe inlet of the gas water bath vaporizer. The gas oil bath vaporizer has a transmission lubricating oil inlet and a transmission lubricating oil outlet. This system increases heat exchange between the gas oil bath vaporizer and the transmission lubricating oil, ensuring optimal cooling performance for the transmission in overheated conditions. It also improves the vaporization capacity of the gas supply system, providing the engine with more stable air rail pressure and supply temperature.

Description

Technical Field

[0001] This application relates to the field of automotive thermal management systems, specifically to a gas supply system and a transmission thermal management system, a vehicle, and a thermal management method. Background Technology

[0002] Gas-powered commercial vehicles are commercial vehicles that use natural gas as fuel, and are mainly divided into two types: liquefied petroleum gas (LPG) vehicles and compressed natural gas (CNG) vehicles. Compared with gasoline vehicles, gas-powered commercial vehicles can significantly reduce emissions of carbon monoxide, hydrocarbons, and nitrogen oxides, making them representative of low-emission vehicles.

[0003] In related technologies, the vaporization process in the gas supply system of gas-powered commercial vehicles is mainly accomplished through finned tubes and water bath carburetors. Firstly, the finned tubes increase the heat exchange area with air, allowing liquefied natural gas to absorb heat and vaporize. Secondly, the water bath carburetor connects to the engine coolant, allowing the liquefied natural gas to absorb heat from the engine coolant and vaporize.

[0004] However, the current gas supply systems for commercial vehicles use finned tubes and water bath carburetors for vaporization, which often results in poor vaporization, leading to unstable engine air rail pressure, uneven gas mixing, and engine problems such as knocking and thermal shock. Summary of the Invention

[0005] This application provides a gas supply system and a gearbox thermal management system, a vehicle and a thermal management method, which can solve the problem of poor vaporization effect that often occurs in the gas supply system of traditional gas commercial vehicles that uses finned tubes and water bath vaporizers for vaporization.

[0006] In a first aspect, embodiments of this application provide a gas supply system and a gearbox thermal management system, comprising:

[0007] A gas storage tank assembly, wherein the output end of the gas storage tank assembly is connected to the inlet end of a three-way control valve;

[0008] A gas water bath vaporizer, wherein the gas pipe inlet of the gas water bath vaporizer is connected to the first outlet of the three-way control valve;

[0009] The gas oil bath vaporizer has a gas pipe inlet connected to the second outlet of the three-way control valve, a gas pipe outlet connected to the gas pipe inlet of the gas water bath vaporizer, and the gas oil bath vaporizer has a gearbox lubricating oil inlet and a gearbox lubricating oil outlet.

[0010] In conjunction with the first aspect, in one embodiment, the gas supply system and the gearbox thermal management system further include:

[0011] An oil temperature sensor is used to monitor the oil temperature of the transmission assembly.

[0012] The controller is connected to the three-way control valve and the oil temperature sensor. When the temperature value monitored by the oil temperature sensor reaches the set temperature value, the controller controls the inlet end of the three-way control valve to connect with the second outlet end, so that the gas oil bath vaporizer can exchange heat with the gearbox assembly.

[0013] In conjunction with the first aspect, in one embodiment, the gas supply system and the gearbox thermal management system further include:

[0014] A rail pressure sensor is used to monitor the rail pressure value entering the engine assembly;

[0015] The controller is connected to the three-way control valve and the air rail pressure sensor. When the air rail pressure value monitored by the air rail pressure sensor is lower than the set air rail pressure value, the controller controls the inlet end of the three-way control valve to connect with the second outlet end, so that the gas oil bath vaporizer and the gearbox assembly can exchange heat.

[0016] In conjunction with the first aspect, in one embodiment, the gas-oil bath vaporizer includes:

[0017] The vaporizer tank has a gas spiral pipe installed inside it. One end of the gas spiral pipe is connected to the second outlet end of the three-way control valve, and the other end is connected to the gas pipe inlet end of the gas water bath vaporizer.

[0018] A thermal insulation layer is disposed in the vaporizer tank;

[0019] The transmission oil inlet and the transmission oil outlet are located in the carburetor tank.

[0020] In conjunction with the first aspect, in one embodiment, the gas supply system and the gearbox thermal management system further include:

[0021] The finned tube has a first gas inlet end connected to the first outlet end of the three-way control valve, a second gas inlet end connected to the gas outlet end of the gas oil bath vaporizer, and a gas outlet end connected to the gas inlet end of the gas water bath vaporizer.

[0022] Secondly, embodiments of this application provide a vehicle comprising:

[0023] A gas storage tank assembly, wherein the output end of the gas storage tank assembly is connected to the inlet end of a three-way control valve;

[0024] A gas water bath vaporizer, wherein the gas pipe inlet of the gas water bath vaporizer is connected to the first outlet of the three-way control valve, the gas pipe outlet of the gas water bath vaporizer is connected to the gas inlet of the engine assembly, and the water pipe inlet and water pipe outlet of the gas water bath vaporizer are connected to the water cooling system of the engine assembly.

[0025] The gas-oil bath vaporizer has its gas inlet connected to the second outlet of the three-way control valve, and its gas outlet connected to the gas inlet of the gas-water bath vaporizer. The gas-oil bath vaporizer also has a gearbox lubricating oil inlet and a gearbox lubricating oil outlet, which are connected to a gearbox assembly.

[0026] In conjunction with the second aspect, in one embodiment, the vehicle further includes:

[0027] A pressure regulating valve is installed between the gas pipe inlet of the gas water bath vaporizer and the gas inlet of the engine assembly.

[0028] In conjunction with the second aspect, in one embodiment, the water cooling system includes:

[0029] The first cooling pipe has one end connected to the water pipe output end of the gas water bath vaporizer, and the other end connected to the cooling water inlet of the engine assembly.

[0030] The second cooling pipe has one end connected to the cooling water outlet of the engine assembly and the other end connected to the water pipe inlet of the gas water bath vaporizer.

[0031] A water temperature sensor, wherein the water temperature sensor is installed in the first cooling pipe or the second cooling pipe;

[0032] A radiator and a water pump are connected in series in the first cooling pipe.

[0033] Thirdly, embodiments of this application provide a thermal management method for a gas supply system and a gearbox thermal management system as described in some of the above embodiments, comprising the following steps:

[0034] Real-time acquisition of transmission assembly oil temperature value;

[0035] If the oil temperature of the transmission assembly is higher than the set temperature, the inlet end of the three-way control valve is connected to the second outlet end to allow the gas oil bath carburetor to exchange heat with the transmission assembly.

[0036] In conjunction with the third aspect, in one embodiment, after the oil temperature of the transmission assembly is greater than a set temperature value, the inlet end of the three-way control valve is connected to the second outlet end to allow heat exchange between the fuel oil bath carburetor and the transmission assembly, the following steps are included:

[0037] Real-time acquisition of air rail pressure values ​​for the engine assembly;

[0038] If the air rail pressure of the engine assembly is less than the set cylinder pressure, the inlet end of the three-way control valve is connected to the second outlet end, so that the gas oil bath carburetor and the gearbox assembly can exchange heat.

[0039] The beneficial effects of the technical solutions provided in this application include:

[0040] By controlling the connection between the second outlet and inlet of the three-way control valve, a gas oil bath vaporizer is added to facilitate heat exchange between the gas water bath vaporizer and the engine assembly, and between the gas oil bath vaporizer and the transmission lubricating oil. This achieves heat exchange between the liquefied natural gas vaporization process and the transmission lubricating oil cooling process, ensuring optimal cooling performance for the transmission in overheat mode. This reduces transmission friction losses and lowers gas consumption. Simultaneously, the system enhances the vaporization capacity of the gas supply system, providing the engine with more stable air rail pressure and supply temperature, reducing knocking and thermal shock issues, thus achieving stable power output and gas savings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the gas supply system and the gearbox thermal management system.

[0043] Figure 2 A schematic diagram of the gas supply system and the gearbox thermal management system in their first state.

[0044] Figure 3 A schematic diagram of the second state of the gas supply system and the gearbox thermal management system;

[0045] Figure 4 This is a schematic diagram of a gas-oil bath vaporizer.

[0046] In the diagram: 1. Gas storage tank assembly; 2. Three-way control valve; 201. Inlet end; 202. First outlet end; 203. Second outlet end; 3. Finned tube; 4. Gas water bath vaporizer; 5. Gas oil bath vaporizer; 501. Transmission lubricating oil inlet; 502. Transmission lubricating oil outlet; 503. Vaporizer tank; 504. Gas spiral pipe; 505. Insulation layer; 6. Oil temperature sensor; 7. Gas rail pressure sensor; 8. Pressure regulating valve; 9. Engine assembly; 10. First cooling pipe; 11. Second cooling pipe; 12. Water temperature sensor; 13. Radiator; 14. Water pump; 15. Transmission assembly. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0048] This application provides a gas supply system and a gearbox thermal management system, as well as a vehicle and a thermal management method, which can solve the problem of poor vaporization effect that often occurs in traditional gas supply systems for commercial vehicles that use finned tubes and water bath vaporizers for vaporization.

[0049] Firstly, such as Figure 1 As shown, this application embodiment provides a gas supply system and a gearbox thermal management system, which includes: a gas storage tank assembly 1, the output end of which is connected to the inlet end 201 of a three-way control valve 2; a gas water bath vaporizer 4, the gas pipe input end of which is connected to the first outlet end 202 of the three-way control valve 2; and a gas oil bath vaporizer 5, the gas pipe input end of which is connected to the second outlet end 203 of the three-way control valve 2, the gas pipe output end of which is connected to the gas pipe input end of the gas water bath vaporizer 4, and the gas oil bath vaporizer 5 has a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502.

[0050] In this embodiment, the gas storage tank assembly 1 serves as the source of gas supply, storing and providing gas to the subsequent gasification device. A three-way control valve 2 has one inlet end 201 and two outlet ends (first outlet end 202, second outlet end 203). The inlet end 201 is connected to the output end of the gas storage tank assembly 1, enabling gas distribution and control. The gas water bath vaporizer 4 promotes gas vaporization through water bath heating. Its gas pipe inlet end is connected to the first outlet end 202 of the three-way control valve 2, receiving gas from the storage tank for vaporization. The gas oil bath vaporizer 5 is a newly added key component in this solution, improving vaporization efficiency through oil bath heating. Its gas pipe inlet end is connected to the second outlet end 203 of the three-way control valve 2, and its gas pipe output end is also connected to the gas pipe inlet end of the gas water bath vaporizer 4, forming a series vaporization structure. The gas oil bath vaporizer 5 also has a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502, enabling coordinated operation with the gearbox thermal management system. When the transmission lubricating oil flows through the fuel oil bath carburetor 5, it absorbs and carries away some heat, helping to maintain a stable operating temperature for the carburetor while improving the transmission's lubrication and heat dissipation performance. By using both water bath and oil bath carburetors in series, their respective vaporization advantages are fully utilized, significantly improving the fuel gas vaporization efficiency. Efficient vaporization ensures stable engine air rail pressure, resulting in more uniform fuel gas mixing and reducing engine knocking, thermal shock, and other problems. The integration of the fuel oil bath carburetor 5 with the transmission thermal management system achieves effective heat utilization and transfer, improving the overall vehicle thermal management efficiency.

[0051] Specifically, by controlling the second outlet 203 of the three-way control valve 2 to connect with the inlet 201, a gas oil bath vaporizer 5 is added to exchange heat with the transmission lubricating oil, in addition to the heat exchange between the gas water bath vaporizer 4 and the engine assembly 9. This achieves heat exchange between the liquefied natural gas vaporization process and the transmission lubricating oil cooling process, ensuring that the transmission assembly 15 receives optimal cooling performance in overheat mode, thereby reducing transmission friction loss and reducing gas consumption. At the same time, this system improves the vaporization capacity of the gas supply system, providing the engine with more stable air rail pressure and supply temperature, reducing knocking and thermal shock problems, thus achieving stable power output and saving gas consumption.

[0052] In conjunction with the first aspect, in one implementation, such as Figure 1As shown, the gas supply system and the gearbox thermal management system further include: an oil temperature sensor 6, which is used to monitor the oil temperature of the gearbox assembly 15; and a controller, which is signal-connected to the three-way control valve 2 and the oil temperature sensor 6. The controller is used to control the inlet end 201 of the three-way control valve 2 to connect with the second outlet end 203 when the temperature value monitored by the oil temperature sensor 6 reaches the set temperature value, so that the gas oil bath vaporizer 5 can exchange heat with the gearbox assembly 15.

[0053] In this embodiment, the oil temperature sensor 6 is installed in the transmission assembly 15 or in the oil circuit connecting the gas oil bath carburetor 5 and the transmission assembly 15 to monitor the temperature of the transmission lubricating oil in real time. The oil temperature sensor 6 converts the monitored oil temperature data into an electrical signal and transmits it to the controller for processing. The controller, as the "brain" of the system, establishes a signal connection with the three-way control valve 2 and the oil temperature sensor 6. The controller receives the oil temperature data transmitted by the oil temperature sensor 6 and makes a judgment based on the preset set temperature value. When the oil temperature reaches or exceeds the set temperature value, the controller sends a control signal to instruct the three-way control valve 2 to switch its internal channel, so that the output end of the gas storage tank assembly 1 is connected to the second outlet end 203 (that is, the three-way control valve 2 switches from the gas storage tank assembly 1 to the second outlet end 203). Figure 2 The connection state between the inlet end 201 and the first outlet end 202 shown in the figure is switched to the state shown in the figure. Figure 3 (The inlet end 201 shown is connected to the second outlet end 203). This switching action activates the gas-oil bath vaporizer 5, which exchanges heat with the transmission assembly 15, effectively reducing the temperature of the transmission lubricating oil and improving the efficiency of gas vaporization. By introducing an oil temperature sensor 6 and a controller, the system can intelligently control the transmission lubricating oil based on its actual temperature, achieving automated and precise thermal management. When the transmission lubricating oil temperature is high, the system automatically activates the gas-oil bath vaporizer 5 for heat exchange, reducing the transmission temperature and improving the gas vaporization efficiency, thus achieving efficient energy utilization. Intelligent thermal management control helps maintain the transmission and vaporizer within a suitable operating temperature range, thereby improving the stability and reliability of the entire system. By optimizing the heat exchange process, energy waste and emissions are reduced, contributing to environmental protection and sustainable development.

[0054] In conjunction with the first aspect, in one implementation, such as Figure 1As shown, the gas supply system and transmission thermal management system further include: a gas rail pressure sensor 7, which is used to monitor the gas rail pressure value entering the engine assembly 9; and a controller, which is signal-connected to the three-way control valve 2 and the gas rail pressure sensor 7. The controller is used to control the inlet end 201 of the three-way control valve 2 to connect with the second outlet end 203 when the gas rail pressure value monitored by the gas rail pressure sensor 7 is lower than the set gas rail pressure value, so that the gas oil bath vaporizer 5 can exchange heat with the transmission assembly 15.

[0055] In this embodiment, the air rail pressure sensor 7 is installed in the intake system of the engine assembly 9, or on the air pipe connecting the engine assembly 9 and the gas water bath carburetor 4, to monitor the air rail pressure entering the engine assembly 9 in real time. The air rail pressure sensor 7 converts the monitored air rail pressure data into an electrical signal and transmits it to the controller for processing. The controller establishes a signal connection with the three-way control valve 2 and the air rail pressure sensor 7. The controller receives the air rail pressure data transmitted by the air rail pressure sensor 7 and makes a judgment based on the preset air rail pressure value. When the air rail pressure is lower than the set value, the controller sends a control signal to instruct the three-way control valve 2 to switch its internal channel, so that the output end of the gas storage tank assembly 1 is connected to the second outlet end 203. This switching action causes the gas oil bath carburetor 5 to start working, and heat exchange is carried out through the heat of the transmission lubricating oil to improve the gas vaporization efficiency, thereby increasing the air rail pressure and ensuring that the engine assembly 9 receives sufficient gas supply. By introducing a rail pressure sensor 7 and a controller, the system can intelligently control the engine assembly 9 based on its actual rail pressure, ensuring that the engine assembly 9 always receives a suitable rail pressure. When the rail pressure is insufficient, the system automatically activates the fuel gas carburetor 5 for heat exchange, improving fuel gas vaporization efficiency and thus increasing the rail pressure, ensuring the normal operation and performance output of the engine assembly 9. Intelligent rail pressure control helps maintain the engine assembly 9 operating under suitable conditions, reducing engine malfunctions and performance degradation caused by unstable rail pressure. By optimizing the fuel gas vaporization and supply process, fuel waste and emissions are reduced, which is beneficial for environmental protection and energy conservation. In summary, this embodiment, by introducing a rail pressure sensor 7 and combining it with a controller, achieves intelligent control based on rail pressure, further improving the performance and stability of the fuel gas supply system and the transmission thermal management system. Simultaneously, this solution also helps improve the operating efficiency of the engine assembly 9 and reduce environmental pollution.

[0056] In conjunction with the first aspect, in one implementation, such as Figure 4As shown, the gas-oil bath vaporizer 5 includes: a vaporizer tank 503, inside which a gas spiral pipe 504 is provided, one end of which is connected to the second outlet end 203 of the three-way control valve 2, and the other end of which is connected to the gas pipe inlet end of the gas-water bath vaporizer 4; a heat insulation layer 505, which is disposed in the vaporizer tank 503; and a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502 are opened in the vaporizer tank 503.

[0057] In this embodiment, the vaporizer tank 503 is the main body of the gas-oil bath vaporizer 5, used to house the gas spiral tube 504 and the transmission lubricating oil. The vaporizer tank 503 has good sealing and corrosion resistance to ensure the isolation of gas and lubricating oil and the long-term stable operation of the system. The gas spiral tube 504 is arranged inside the vaporizer tank 503, and its shape is spiral to increase the contact area with the transmission lubricating oil and the heat exchange efficiency. One end of the gas spiral tube 504 is connected to the second outlet end 203 of the three-way control valve 2 to receive gas from the gas storage tank; the other end is connected to the gas pipe inlet end of the gas water bath vaporizer 4 to deliver the vaporized gas to the gas water bath vaporizer. The insulation layer 505 is set on the outside of the vaporizer tank 503 or in the interlayer cavity to reduce heat loss and maintain a stable temperature inside the tank. The insulation layer material has good thermal insulation performance and corrosion resistance to ensure the thermal efficiency and safety of the system. The transmission lubricating oil inlet 501 and outlet 502 are located on the carburetor tank 503 for connection to the lubricating oil circuit of the transmission assembly 15. Lubricating oil enters the carburetor tank 503 through the inlet, exchanges heat with the gas spiral pipe 504, and then flows back to the transmission assembly 15 through the outlet, achieving heat transfer and utilization. The spiral gas pipe design increases the contact area and heat exchange time between the gas and the transmission lubricating oil, thereby improving heat exchange efficiency. The insulation layer reduces heat loss, helps maintain a stable temperature inside the carburetor tank 503, and improves vaporization efficiency and system stability. As the transmission lubricating oil flows through the carburetor tank 503, it absorbs and carries away some heat, helping to lower the oil temperature and improve its lubrication performance and heat dissipation. By optimizing the heat exchange process and improving vaporization efficiency, waste of gas and emissions are reduced, contributing to environmental protection and energy conservation.

[0058] In conjunction with the first aspect, in one implementation, such as Figure 1As shown, the gas supply system and gearbox thermal management system further include: a finned tube 3, the first gas pipe input end of the finned tube 3 being connected to the first outlet end 202 of the three-way control valve 2, the second gas pipe input end of the finned tube 3 being connected to the gas pipe output end of the gas oil bath vaporizer 5, and the gas pipe output end of the finned tube 3 being connected to the gas pipe input end of the gas water bath vaporizer 4.

[0059] In this embodiment, the finned tube 3 is a pipe with enhanced heat exchange capacity. It has multiple fins or ribs inside to increase the surface area of ​​the inner wall, thereby improving heat exchange efficiency. The first gas inlet of the finned tube 3 is connected to the first outlet 202 of the three-way control valve 2, receiving raw gas from the gas storage tank assembly 1. The second gas inlet is connected to the gas outlet of the gas oil bath vaporizer 5, receiving the gas after vaporization in the gas oil bath vaporizer 5. The gas outlet is connected to the gas inlet of the gas water bath vaporizer 4, delivering the mixed gas to the gas water bath vaporizer 4 for further processing. The design of the finned tube 3 increases the surface area of ​​the inner wall of the pipe, allowing the gas to exchange heat more fully with the outer wall of the pipe during flow, thus improving heat exchange efficiency. By introducing the finned tube 3, the system can adjust the gas flow path and vaporization method according to actual needs. For example, when the transmission oil temperature is high, the gas-oil bath vaporizer 5 can be used more for vaporization; while when the oil temperature is low or a faster vaporization rate is required, the heat exchange capacity of the finned tube 3 can be relied upon more. The finned tube 3 can mix and regulate the gas from different vaporizers, thereby optimizing the quality and stability of the gas supply and ensuring that the engine receives a suitable gas supply. By improving heat exchange efficiency and optimizing the gas supply, gas waste and emissions are reduced, which is beneficial to environmental protection and energy conservation and emission reduction.

[0060] Secondly, such as Figure 1As shown in the figure, this application provides a vehicle comprising: a gas reservoir assembly 1, the output end of which is connected to the inlet end 201 of a three-way control valve 2; a gas water bath vaporizer 4, the gas pipe input end of which is connected to the first outlet end 202 of the three-way control valve 2, the gas pipe output end of which is connected to the gas inlet of an engine assembly 9, and the water pipe input end and water pipe output end of the gas water bath vaporizer 4 are connected to the gas inlet of an engine assembly 9. The engine assembly 9 has a water-cooling system; a gas oil bath vaporizer 5, the gas pipe inlet of which is connected to the second outlet 203 of the three-way control valve 2, the gas pipe outlet of which is connected to the gas pipe inlet of the gas water bath vaporizer 4, and the gas oil bath vaporizer 5 has a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502, and the gearbox lubricating oil inlet 501 and the gearbox lubricating oil outlet 502 are connected to the gearbox assembly 15.

[0061] In this embodiment, the gas storage tank assembly 1 serves as the source of gas supply, storing and providing gas to the subsequent gasification device. A three-way control valve 2 has one inlet end 201 and two outlet ends (first outlet end 202, second outlet end 203). The inlet end 201 is connected to the output end of the gas storage tank assembly 1, enabling gas distribution and control. The gas water bath vaporizer 4 promotes gas vaporization through water bath heating. Its gas pipe inlet end is connected to the first outlet end 202 of the three-way control valve 2, receiving gas from the storage tank for vaporization. The gas oil bath vaporizer 5 is a newly added key component in this solution, improving vaporization efficiency through oil bath heating. Its gas pipe inlet end is connected to the second outlet end 203 of the three-way control valve 2, and its gas pipe output end is also connected to the gas pipe inlet end of the gas water bath vaporizer 4, forming a series vaporization structure. The gas oil bath vaporizer 5 also has a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502, enabling coordinated operation with the gearbox thermal management system. When the transmission lubricating oil flows through the fuel oil bath carburetor 5, it absorbs and carries away some heat, helping to maintain a stable operating temperature for the carburetor and improving the lubrication and heat dissipation performance of the transmission assembly 15. By using both water bath and oil bath carburetors in series, their respective vaporization advantages are fully utilized, significantly improving the vaporization efficiency of the fuel gas. Efficient vaporization ensures the stability of the engine's air rail pressure, resulting in a more uniform fuel gas mixture and reducing issues such as engine knocking and thermal shock in the engine assembly 9. The integration of the fuel oil bath carburetor 5 with the transmission assembly 15's thermal management system achieves effective heat utilization and transfer, improving the overall vehicle's thermal management efficiency.

[0062] Specifically, by controlling the second outlet 203 of the three-way control valve 2 to connect with the inlet 201, a gas oil bath vaporizer 5 is added to exchange heat with the lubricating oil of the transmission assembly 15, in addition to the heat exchange between the gas water bath vaporizer 4 and the engine assembly 9. This achieves heat exchange between the liquefied natural gas vaporization process and the transmission lubricating oil cooling process, ensuring that the transmission assembly 15 receives optimal cooling performance in overheat mode, thereby reducing friction loss and reducing gas consumption. At the same time, the system improves the vaporization capacity of the gas supply system, providing the engine assembly 9 with more stable air rail pressure and supply temperature, reducing knocking and thermal shock problems, thus achieving stable power output and gas consumption savings.

[0063] In conjunction with the second aspect, in one implementation method, such as Figure 1 As shown, the vehicle also includes a pressure regulating valve 8, which is installed between the gas pipe inlet of the gas water bath vaporizer 4 and the gas inlet of the engine assembly 9.

[0064] In this embodiment, the pressure regulating valve 8 is installed between the gas inlet of the gas water bath vaporizer 4 and the gas inlet of the engine assembly 9, serving to regulate the gas pressure. The pressure regulating valve 8 ensures that the gas pressure delivered to the engine assembly 9 remains within a suitable range, thereby protecting the engine and optimizing its performance. The pressure regulating valve 8 stabilizes the gas pressure, reducing potential damage to the engine assembly 9 caused by pressure fluctuations, thus enhancing the stability of the gas supply. By ensuring appropriate gas pressure, the pressure regulating valve 8 helps the engine assembly 9 burn gas more efficiently, thereby improving its performance and fuel economy. The pressure regulating valve 8 prevents the gas pressure from being too high or too low, thus avoiding potential safety hazards such as gas leakage or engine failure. Stable gas pressure helps reduce wear and damage to system components, thereby extending the lifespan of the entire gas supply system and the engine.

[0065] In conjunction with the second aspect, in one implementation method, such as Figure 1 As shown, the water cooling system includes: a first cooling pipe 10, one end of which is connected to the water pipe output end of the gas water bath vaporizer 4, and the other end of which is connected to the cooling water inlet of the engine assembly 9; a second cooling pipe 11, one end of which is connected to the cooling water outlet of the engine assembly 9, and the other end of which is connected to the water pipe input end of the gas water bath vaporizer 4; a water temperature sensor 12, which is installed on the first cooling pipe 10 or the second cooling pipe 11; a radiator 13 and a water pump 14, which are connected in series in the first cooling pipe 10.

[0066] In this embodiment, one end of the first cooling pipe 10 is connected to the water outlet of the gas-water vaporizer 4, receiving the cooling water heated by the vaporizer. The other end is connected to the cooling water inlet of the engine assembly 9, delivering the cooling water to the engine for cooling. One end of the second cooling pipe 11 is connected to the cooling water outlet of the engine assembly 9, receiving the cooling water after the engine has cooled, and the other end is connected to the water inlet of the gas-water vaporizer 4, delivering the cooling water back to the vaporizer for heating and circulation. A water temperature sensor 12 is installed on either the first cooling pipe 10 or the second cooling pipe 11 to monitor the temperature of the cooling water in real time. The temperature signal provided by the water temperature sensor 12 can be used to control the operating state of the system, such as adjusting the operating modes of the gas-oil vaporizer 5 and the gas-water vaporizer 4. A radiator 13 and a water pump 14 are connected in series in the first cooling pipe 10 to form a cooling water circulation loop. The radiator 13 is used to dissipate the heat in the cooling water into the air, reducing the temperature of the cooling water. Water pump 14 drives the cooling water to circulate in the loop, ensuring the normal operation of the cooling system. The circulation connection of the first cooling pipe 10 and the second cooling pipe 11 forms a highly efficient cooling system, ensuring the engine assembly 9 operates within a suitable temperature range, improving its performance and lifespan. The introduction of water temperature sensor 12 enables real-time monitoring and intelligent control of the cooling water temperature, allowing adjustment of the cooling system's operating state according to actual needs, improving the system's flexibility and adaptability. The series connection of radiator 13 and water pump 14 improves the cooling system's heat dissipation efficiency, reduces energy waste and emissions, and is beneficial for environmental protection and energy conservation.

[0067] Thirdly, embodiments of this application provide a thermal management method for a gas supply system and a gearbox thermal management system as described in some of the above embodiments, comprising the following steps:

[0068] S100: Real-time acquisition of the oil temperature value of the transmission assembly 15;

[0069] S200: If the oil temperature of the gearbox assembly 15 is greater than the set temperature, the inlet end 201 of the three-way control valve 2 is connected to the second outlet end 203 to allow the gas oil bath vaporizer 5 to exchange heat with the gearbox assembly 15.

[0070] In this embodiment, S100 acquires the real-time oil temperature value of the transmission assembly 15, and monitors the transmission fluid temperature in real time through an oil temperature sensor installed on the transmission assembly 15. S200 determines the oil temperature and controls the three-way control valve 2. If the oil temperature value of the transmission assembly 15 is greater than a set temperature value (which is preset based on the normal operating temperature range and safety requirements of the transmission), the inlet end 201 of the three-way control valve 2 is connected to the second outlet end 203. This operation allows the gas to flow out from the gas storage tank assembly 1 and enter the gas-oil bath vaporizer 5 through the second outlet end 203 of the three-way control valve 2. In the gas-oil bath vaporizer 5, the gas exchanges heat with the transmission fluid, thereby reducing the temperature of the transmission fluid. If the oil temperature value does not exceed the set temperature value, the current state of the three-way control valve 2 is maintained (i.e., the inlet end 201 of the three-way control valve 2 is connected to the first outlet end 202). By acquiring the transmission fluid temperature in real time and combining it with the control strategy, intelligent regulation of the transmission thermal state is achieved. When the oil temperature is too high, the heat exchange process is automatically initiated to effectively prevent the transmission from overheating. Utilizing the gas-oil bath vaporizer 5 for heat exchange not only reduces the transmission oil temperature but also improves the gas vaporization efficiency. Simultaneously, this system enhances the vaporization capacity of the gas supply system, providing the engine assembly 9 with more stable air rail pressure and supply temperature, reducing knocking and thermal shock issues, thereby achieving stable power output and fuel efficiency.

[0071] In conjunction with the third aspect, in one implementation, after S200, the following steps are included:

[0072] S300: Real-time acquisition of air rail pressure values ​​for engine assembly 9;

[0073] S400: If the air rail pressure value of engine assembly 9 is less than the set cylinder pressure value, the inlet end 201 of the three-way control valve 2 is connected to the second outlet end 203 to allow the gas oil bath carburetor 5 to exchange heat with the gearbox assembly 15.

[0074] In this embodiment, after S200, S300 acquires the engine air rail pressure value in real time. The air rail pressure value of the engine assembly 9 is monitored in real time by sensors, which is an important parameter for evaluating the engine's operating status. S400 determines the air rail pressure and controls the three-way control valve 2. If the air rail pressure value is less than a set value, the three-way control valve 2 is controlled to allow the fuel-oil vaporizer 5 to exchange heat with the transmission assembly 15, thereby increasing the air rail pressure and optimizing system performance. This improves the vaporization capacity of the fuel supply system, providing the engine assembly 9 with a more stable air rail pressure and supply temperature, reducing knocking and thermal shock problems, thus achieving stable power output and fuel savings.

[0075] In some embodiments, steps S300 and S400 may precede or be parallel to steps S100 and S200.

[0076] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0077] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0078] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A gas supply system and a gearbox thermal management system, characterized in that, It includes: Gas storage tank assembly (1), the output end of which is connected to the inlet end (201) of a three-way control valve (2); Gas water bath vaporizer (4), the gas pipe input end of the gas water bath vaporizer (4) is connected to the first outlet end (202) of the three-way control valve (2); The gas oil bath vaporizer (5) has its gas pipe inlet connected to the second outlet (203) of the three-way control valve (2), and its gas pipe outlet connected to the gas pipe inlet of the gas water bath vaporizer (4). The gas oil bath vaporizer (5) is provided with a gearbox lubricating oil inlet (501) and a gearbox lubricating oil outlet (502). The gas supply system and gearbox thermal management system also include: Oil temperature sensor (6), the oil temperature sensor (6) is used to monitor the oil temperature of the transmission assembly (15); The controller is connected to the three-way control valve (2) and the oil temperature sensor (6) by signal. The controller is used to control the inlet end (201) of the three-way control valve (2) to connect with the second outlet end (203) when the temperature value monitored by the oil temperature sensor (6) reaches the set temperature value, so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat. Rail pressure sensor (7), the rail pressure sensor (7) is used to monitor the rail pressure value entering the engine assembly (9); The controller is connected to the three-way control valve (2) and the air rail pressure sensor (7) for signal connection. The controller is used to control the inlet end (201) of the three-way control valve (2) to connect with the second outlet end (203) when the air rail pressure value monitored by the air rail pressure sensor (7) is lower than the set air rail pressure value, so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat.

2. The gas supply system and gearbox thermal management system as described in claim 1, characterized in that, The gas oil bath vaporizer (5) includes: The vaporizer tank (503) is provided with a gas spiral pipe (504) inside the vaporizer tank (503). One end of the gas spiral pipe (504) is connected to the second outlet end (203) of the three-way control valve (2), and the other end is connected to the gas pipe input end of the gas water bath vaporizer (4). Insulation layer (505), the insulation layer (505) is disposed on the vaporizer tank (503); The transmission lubricating oil inlet (501) and the transmission lubricating oil outlet (502) are located in the carburetor tank (503).

3. The gas supply system and gearbox thermal management system as described in claim 1, characterized in that, The gas supply system and gearbox thermal management system also include: The finned tube (3) has its first gas inlet end connected to the first outlet end (202) of the three-way control valve (2), its second gas inlet end connected to the gas outlet end of the gas oil bath vaporizer (5), and its gas outlet end connected to the gas inlet end of the gas water bath vaporizer (4).

4. A vehicle, characterized in that, It includes: Gas storage tank assembly (1), the output end of which is connected to the inlet end (201) of a three-way control valve (2); Gas water bath vaporizer (4), the gas pipe input end of the gas water bath vaporizer (4) is connected to the first outlet end (202) of the three-way control valve (2), the gas pipe output end of the gas water bath vaporizer (4) is connected to the gas inlet of the engine assembly (9), and the water pipe input end and water pipe output end of the gas water bath vaporizer (4) are connected to the water cooling system of the engine assembly (9); A gas oil bath vaporizer (5) is provided, wherein the gas pipe input end of the gas oil bath vaporizer (5) is connected to the second outlet end (203) of the three-way control valve (2), the gas pipe output end of the gas oil bath vaporizer (5) is connected to the gas pipe input end of the gas water bath vaporizer (4), and the gas oil bath vaporizer (5) is provided with a gearbox lubricating oil inlet (501) and a gearbox lubricating oil outlet (502), and the gearbox lubricating oil inlet (501) and the gearbox lubricating oil outlet (502) are connected to a gearbox assembly (15). Oil temperature sensor (6), the oil temperature sensor (6) is used to monitor the oil temperature of the transmission assembly (15); The controller is connected to the three-way control valve (2) and the oil temperature sensor (6) by signal. The controller is used to control the inlet end (201) of the three-way control valve (2) to connect with the second outlet end (203) when the temperature value monitored by the oil temperature sensor (6) reaches the set temperature value, so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat. Rail pressure sensor (7), the rail pressure sensor (7) is used to monitor the rail pressure value entering the engine assembly (9); The controller is connected to the three-way control valve (2) and the air rail pressure sensor (7) for signal connection. The controller is used to control the inlet end (201) of the three-way control valve (2) to connect with the second outlet end (203) when the air rail pressure value monitored by the air rail pressure sensor (7) is lower than the set air rail pressure value, so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat.

5. The vehicle as described in claim 4, characterized in that, The vehicle also includes: Pressure regulating valve (8) is installed between the gas pipe inlet of the gas water bath vaporizer (4) and the gas inlet of the engine assembly (9).

6. The vehicle as described in claim 4, characterized in that, The water cooling system includes: The first cooling pipe (10) has one end connected to the water pipe output end of the gas water bath vaporizer (4) and the other end connected to the cooling water inlet of the engine assembly (9). The second cooling pipe (11) has one end connected to the cooling outlet of the engine assembly (9) and the other end connected to the water inlet of the gas water bath vaporizer (4). Water temperature sensor (12), the water temperature sensor (12) is installed in the first cooling pipe (10) or the second cooling pipe (11); A radiator (13) and a water pump (14) are connected in series in the first cooling pipe (10).

7. A thermal management method for a gas supply system and a gearbox thermal management system as described in any one of claims 1-3, characterized in that, It includes the following steps: Real-time acquisition of the oil temperature value of the transmission assembly (15); If the oil temperature of the gearbox assembly (15) is greater than the set temperature, the inlet end (201) of the three-way control valve (2) is connected to the second outlet end (203) so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat.

8. The thermal management method for the gas supply system and gearbox thermal management system as described in claim 7, characterized in that, If the oil temperature of the gearbox assembly (15) is greater than the set temperature, the inlet (201) of the three-way control valve (2) is connected to the second outlet (203) to allow heat exchange between the gas oil bath vaporizer (5) and the gearbox assembly (15), including: Real-time acquisition of the air rail pressure value of the engine assembly (9); If the air rail pressure value of the engine assembly (9) is less than the set cylinder pressure value, the inlet end (201) of the three-way control valve (2) is connected to the second outlet end (203) so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat.

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