Fuel gas supply system and gearbox thermal management system, vehicle and thermal management method

Abstract

The invention relates to a fuel gas supply system and gearbox heat management system, a vehicle and a heat management method. The fuel gas supply system and gearbox heat management system comprises a fuel gas storage cylinder assembly, and the output end of the fuel gas storage cylinder assembly communicates with the inlet end of a three-way control valve; a gas pipe input end of the gas water bath vaporizer is communicated with a first outlet end of the three-way control valve; a gas pipe input end of the gas oil bath vaporizer is communicated with a second outlet end of the three-way control valve, and a gas pipe output end of the gas oil bath vaporizer is communicated with a gas pipe input end of the gas water bath vaporizer; and the fuel gas oil bath vaporizer is provided with a gearbox lubricating oil inlet and a gearbox lubricating oil outlet. The fuel gas oil bath vaporizer is added to exchange heat with lubricating oil of the gearbox, so that the gearbox can be ensured to obtain the cooling effect with the optimal performance in an overheating mode; and meanwhile, the gasification capacity of the fuel gas supply system is improved, and more stable gas rail pressure and gas supply temperature are provided for an engine.

Description

Technical Field

[0001] The present application relates to the field of automotive thermal management systems, and in particular to a gas supply system and a transmission thermal management system, a vehicle, and a thermal management method. Background Art

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

[0003] In the related technology, the gasification process in the gas supply system of gas commercial vehicles is mainly completed by finned tubes and water bath vaporizers. First, the finned tube mainly increases the heat exchange area with the air to make the liquefied natural gas absorb heat and vaporize. In addition, the water bath vaporizer is connected to the engine coolant, and the liquefied natural gas absorbs the heat of the engine coolant and vaporizes.

[0004] However, the current gas supply systems for gas-fired commercial vehicles use finned tubes and water bath carburetors for gasification, which often result in poor gasification effects, leading to unstable engine gas rail pressure, uneven gas mixing, and other problems, resulting in engine problems such as detonation and hot and cold shock. Summary of the invention

[0005] The present application provides a gas supply system and a transmission thermal management system, a vehicle and a thermal management method, which can solve the problem of poor gasification effect often occurring in the gas supply system of a traditional gas commercial vehicle using fin tubes and a water bath vaporizer for gasification.

[0006] In a first aspect, an embodiment of the present application provides a gas supply system and a transmission thermal management system, which includes:

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

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

[0009] A gas oil bath vaporizer, wherein the gas pipe input end of the gas oil bath vaporizer is connected to the second outlet end of the three-way control valve, the gas pipe output end of the gas oil bath vaporizer is connected to the gas pipe input end of the gas water bath vaporizer, and the gas oil bath vaporizer is provided with a gearbox lubricating oil inlet and a gearbox lubricating oil outlet.

[0010] In combination with the first aspect, in one implementation, the gas supply system and the transmission thermal management system further include:

[0011] An oil temperature sensor, the oil temperature sensor is used to monitor the oil temperature of the gearbox assembly;

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

[0013] In combination with the first aspect, in one implementation, the gas supply system and the transmission thermal management system further include:

[0014] An air rail pressure sensor, the air rail pressure sensor is used to monitor the pressure value of the air rail entering the engine assembly;

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

[0016] In combination with the first aspect, in one embodiment, the gas oil bath vaporizer comprises:

[0017] A vaporizer tank body, wherein a gas spiral tube is arranged inside the vaporizer tank body, one end of the gas spiral tube is connected to the second outlet end of the three-way control valve, and the other end of the gas spiral tube is connected to the gas pipe input end of the gas water bath vaporizer;

[0018] A heat-insulating layer, the heat-insulating layer being arranged on the vaporizer tank;

[0019] The gearbox lubricating oil inlet and the gearbox lubricating oil outlet are provided in the carburetor tank.

[0020] In combination with the first aspect, in one implementation, the gas supply system and the transmission thermal management system further include:

[0021] A fin tube, wherein the first air pipe input end of the fin tube is connected to the first outlet end of the three-way control valve, the second air pipe input end of the fin tube is connected to the air pipe output end of the gas oil bath vaporizer, and the air pipe output end of the fin tube is connected to the air pipe input end of the gas water bath vaporizer.

[0022] In a second aspect, an embodiment of the present application provides a vehicle, comprising:

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

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

[0025] A gas oil bath vaporizer, wherein the gas pipe input end of the gas oil bath vaporizer is connected to the second outlet end of the three-way control valve, the gas pipe output end of the gas oil bath vaporizer is connected to the gas pipe input end of the gas water bath vaporizer, and the gas oil bath vaporizer is provided with a gearbox lubricating oil inlet and a gearbox lubricating oil outlet, and the gearbox lubricating oil inlet and the gearbox lubricating oil outlet are connected to a gearbox assembly

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

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

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

[0029] a first cooling pipeline, one end of which is connected to the water pipe output end of the gas water bath vaporizer, and the other end of which is connected to the cooling water inlet of the engine assembly;

[0030] a second cooling pipeline, one end of which is connected to the cooling water outlet of the engine assembly, and the other end of which is connected to the water pipe input end of the gas water bath vaporizer;

[0031] A water temperature sensor, the water temperature sensor being installed in the first cooling pipeline or the second cooling pipeline;

[0032] A radiator and a water pump, wherein the radiator and the water pump are sequentially connected in series to the first cooling pipeline.

[0033] In a third aspect, an embodiment of the present application provides a thermal management method for a gas supply system and a transmission thermal management system as described in some of the above embodiments, which comprises the following steps:

[0034] Get the oil temperature value of the gearbox assembly in real time;

[0035] If the oil temperature of the gearbox assembly is greater than the set temperature, the inlet end of the three-way control valve is controlled to communicate with the second outlet end, so that the gas oil bath vaporizer and the gearbox assembly can exchange heat.

[0036] In combination with the third aspect, in one embodiment, if the oil temperature value of the gearbox assembly is greater than the set temperature value, the inlet end of the three-way control valve is controlled to be connected with the second outlet end to make the gas oil bath vaporizer and the gearbox assembly exchange heat, including:

[0037] Obtain the air rail pressure value of the engine assembly in real time;

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

[0039] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0040] The second outlet port of the three-way control valve can be controlled to be connected with the inlet port. On the basis of the heat exchange between the gas water bath vaporizer and the engine assembly, the heat exchange between the gas oil bath vaporizer and the gearbox lubricating oil is added, so that the heat exchange between the liquefied natural gas gasification process and the gearbox lubricating oil cooling process is realized, which can ensure that the gearbox obtains the best performance cooling effect in the overheating mode, thereby reducing the friction loss of the gearbox and achieving the effect of reducing gas consumption; at the same time, the system improves the gasification capacity of the gas supply system, provides the engine with a more stable gas rail pressure and gas supply temperature, reduces the occurrence of problems such as detonation and hot and cold shocks, thereby achieving the effect of stable power output and saving gas consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic diagram of the structure of the gas supply system and the transmission thermal management system;

[0043] Figure 2 It is a schematic diagram of the structure of the gas supply system and the transmission thermal management system in the first state;

[0044] Figure 3 It is a schematic diagram of the structure of the gas supply system and the transmission thermal management system in the second state;

[0045] Figure 4 It is a schematic diagram of the structure of the gas oil bath vaporizer.

[0046] In the figure: 1. gas storage cylinder 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. gearbox lubricating oil inlet; 502. gearbox lubricating oil outlet; 503. vaporizer tank; 504. gas spiral tube; 505. insulation layer; 6. oil temperature sensor; 7. gas rail pressure sensor; 8. pressure regulating valve; 9. engine assembly; 10. first cooling pipeline; 11. second cooling pipeline; 12. water temperature sensor; 13. radiator; 14. water pump; 15. gearbox assembly. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] The embodiments of the present application provide a gas supply system and a transmission thermal management system, a vehicle and a thermal management method, which can solve the problem that fin tubes and water bath vaporizers are used for gasification in traditional gas commercial vehicle gas supply systems, and the gasification effect is often poor.

[0049] First, as Figure 1 As shown, an embodiment of the present application provides a gas supply system and a gearbox thermal management system, which includes: a gas storage cylinder assembly 1, the output end of the gas storage cylinder assembly 1 is connected to the inlet end 201 of the three-way control valve 2; a 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; a gas oil bath vaporizer 5, 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.

[0050] In this embodiment, the gas storage cylinder assembly 1 serves as the source of gas supply, and the gas storage cylinder is responsible for storing and providing gas to the subsequent gasification device. The three-way control valve 2 has an inlet end 201 and two outlet ends (a first outlet end 202 and a second outlet end 203). The inlet end 201 is connected to the output end of the gas storage cylinder assembly 1 to achieve gas distribution and control. The gas water bath vaporizer 4 promotes gasification by water bath heating. Its gas pipe input end is connected to the first outlet end 202 of the three-way control valve 2, and receives gas from the gas storage cylinder for gasification. The gas oil bath vaporizer 5 is a key component newly added to this scheme, and improves gasification efficiency by oil bath heating. Its gas pipe input end is connected to the second outlet end 203 of the three-way control valve 2, and at the same time, its gas pipe output end is also connected to the gas pipe input end of the gas water bath vaporizer 4, forming a series gasification structure. The gas oil bath vaporizer 5 is also provided with a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502, which realizes the coordinated work with the gearbox thermal management system. When the gearbox lubricating oil flows through the gas oil bath vaporizer 5, it can absorb and take away some heat, which helps to maintain the stable operating temperature of the vaporizer, while improving the lubrication effect and heat dissipation performance of the gearbox. By using the water bath and oil bath vaporizers in series, their respective gasification advantages are fully utilized, and the gasification efficiency of the gas is significantly improved. Efficient gasification ensures the stability of the engine gas rail pressure, making the gas mixing more uniform, thereby reducing the occurrence of engine knock, cold and hot shock and other problems. The combination of the gas oil bath vaporizer 5 and the gearbox thermal management system realizes the effective utilization and transfer of heat, and improves the thermal management efficiency of the entire vehicle.

[0051] Specifically, the second outlet port 203 of the three-way control valve 2 can be controlled to be connected with the inlet port 201. On the basis of the heat exchange between the gas water bath vaporizer 4 and the engine assembly 9, a gas oil bath vaporizer 5 is added to exchange heat with the gearbox lubricating oil, thereby realizing the heat exchange between the liquefied natural gas gasification process and the gearbox lubricating oil cooling process, and ensuring that the gearbox assembly 15 obtains the best cooling performance in the overheating mode, thereby reducing the friction loss of the gearbox and achieving the effect of reducing gas consumption; at the same time, the system improves the gasification capacity of the gas supply system, provides the engine with a more stable gas rail pressure and gas supply temperature, reduces the occurrence of problems such as detonation and hot and cold shocks, thereby achieving the effect of stable power output and saving gas consumption.

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

[0053] In this embodiment, the oil temperature sensor 6 is installed in the gearbox assembly 15 or in the oil circuit connecting the gas oil bath vaporizer 5 and the gearbox assembly 15, and is used to monitor the temperature of the gearbox 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, serving 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 a 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 cylinder assembly 1 is connected to the second outlet end 203 (that is, the three-way control valve 2 is connected from Figure 2 The inlet port 201 shown is connected to the first outlet port 202, and the state is switched to Figure 3 The inlet end 201 shown is connected to the second outlet end 203). This switching action causes the gas oil bath vaporizer 5 to start working and perform heat exchange with the gearbox assembly 15, thereby effectively reducing the temperature of the gearbox lubricating oil and improving the efficiency of gas gasification. By introducing the oil temperature sensor 6 and the controller, the system can perform intelligent control according to the actual temperature of the gearbox lubricating oil, realizing the automation and precision of thermal management. When the gearbox lubricating oil temperature is high, the system automatically starts the gas oil bath vaporizer 5 for heat exchange, which not only reduces the temperature of the gearbox, but also improves the gasification efficiency of the gas, realizing the effective use of energy. Intelligent thermal management control helps to maintain the gearbox 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 emission generation are reduced, which is beneficial to environmental protection and sustainable development.

[0054] In combination with the first aspect, in one embodiment, Figure 1As shown, the gas supply system and the transmission thermal management system also include: a gas rail pressure sensor 7, which is used to monitor the gas rail pressure value entering the engine assembly 9; a controller, which is signal-connected to the three-way control valve 2 and the gas rail pressure sensor 7, and is used to control the inlet end 201 of the three-way control valve 2 to be connected 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 and the transmission assembly 15 are heat exchanged.

[0055] In this embodiment, the gas rail pressure sensor 7 is installed in the air intake system of the engine assembly 9, or on the air pipe connecting the engine assembly 9 and the gas water bath vaporizer 4, for real-time monitoring of the gas rail pressure entering the engine assembly 9. The gas rail pressure sensor 7 converts the monitored gas 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 gas rail pressure sensor 7. The controller receives the gas rail pressure data transmitted by the gas rail pressure sensor 7 and makes a judgment based on the preset set gas rail pressure value. When the gas 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 cylinder assembly 1 is connected to the second outlet end 203. This switching action enables the gas oil bath vaporizer 5 to start working, and heat exchange is performed through the heat of the gearbox lubricating oil to improve the gasification efficiency of the gas, thereby increasing the gas rail pressure and ensuring that the engine assembly 9 obtains sufficient gas supply. By introducing the gas rail pressure sensor 7 and the controller, the system can perform intelligent control according to the actual gas rail pressure of the engine assembly 9 to ensure that the engine assembly 9 always obtains the appropriate gas rail pressure. When the gas rail pressure is insufficient, the system automatically starts the gas oil bath vaporizer 5 for heat exchange to improve the gas gasification efficiency, thereby increasing the gas rail pressure and ensuring the normal operation and performance output of the engine assembly 9. Intelligent gas rail pressure control helps to maintain the engine assembly 9 in a suitable working state, reducing engine failures and performance degradation caused by unstable gas rail pressure. By optimizing the gas gasification and supply process, the waste of gas and the generation of emissions are reduced, which is beneficial to environmental protection and energy conservation and emission reduction. In summary, this embodiment realizes intelligent control based on gas rail pressure by introducing the gas rail pressure sensor 7 and combining it with the controller, further improving the performance and stability of the gas supply system and the transmission thermal management system. At the same time, this solution also helps to improve the operating efficiency of the engine assembly 9 and reduce environmental pollution.

[0056] In combination with the first aspect, in one embodiment, Figure 4As shown, the gas oil bath vaporizer 5 includes: a vaporizer tank body 503, a gas spiral tube 504 is arranged inside the vaporizer tank body 503, one end of the gas spiral tube 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; an insulation layer 505, and the insulation layer 505 is arranged on the vaporizer tank body 503; the gearbox lubricating oil inlet 501 and the gearbox lubricating oil outlet 502 are opened in the vaporizer tank body 503.

[0057] In this embodiment, the vaporizer tank 503 is the main part of the gas oil bath vaporizer 5, which is used to accommodate the gas spiral tube 504 and the gearbox 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 gearbox 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 the gas from the gas storage cylinder; the other end is connected to the gas pipe input end of the gas water bath vaporizer 4 to deliver the gasified gas to the gas water bath vaporizer. The insulation layer 505 is arranged outside the vaporizer tank 503 or in the interlayer chamber to reduce heat loss and maintain a stable temperature inside the tank. The insulation layer material has good thermal insulation and corrosion resistance to ensure the thermal efficiency and safety of the system. The gearbox lubricating oil inlet 501 and outlet 502 are provided on the vaporizer tank 503 for connection with the lubricating oil circuit of the gearbox assembly 15. The lubricating oil enters the vaporizer tank 503 through the inlet, exchanges heat with the gas spiral tube 504, and then flows back to the gearbox assembly 15 through the outlet to achieve heat transfer and utilization. By adopting the spiral gas pipe design, the contact area and heat exchange time between the gas and the gearbox lubricating oil are increased, thereby improving the heat exchange efficiency. The setting of the insulation layer reduces heat loss, helps to maintain a stable temperature inside the vaporizer tank 503, and improves the gasification efficiency and system stability. When the gearbox lubricating oil flows through the vaporizer tank 503, it can absorb and take away part of the heat, which helps to reduce the temperature of the lubricating oil and improve its lubrication performance and heat dissipation effect. By optimizing the heat exchange process and improving the gasification efficiency, the waste of gas and the generation of emissions are reduced, which is beneficial to environmental protection and energy conservation and emission reduction.

[0058] In combination with the first aspect, in one embodiment, Figure 1As shown, the gas supply system and the gearbox thermal management system also include: a fin tube 3, a first gas pipe input end of the fin tube 3 is connected to the first outlet end 202 of the three-way control valve 2, a second gas pipe input end of the fin tube 3 is connected to the gas pipe output end of the gas oil bath vaporizer 5, and the gas pipe output end of the fin tube 3 is 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, and a plurality of fins or ribs are arranged inside the finned tube 3 to increase the surface area of ​​the inner wall of the pipe, thereby improving the heat exchange efficiency. The first gas pipe input end of the finned tube 3 is connected to the first outlet end 202 of the three-way control valve 2 to receive the original gas from the gas storage cylinder assembly 1. The second gas pipe input end is connected to the gas pipe output end of the gas oil bath vaporizer 5 to receive the gas after gasification by the gas oil bath vaporizer 5. The gas pipe output end is connected to the gas pipe input end of the gas water bath vaporizer 4 to deliver 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, so that the gas can more fully exchange heat with the outer wall of the pipe during the flow process, thereby improving the heat exchange efficiency. By introducing the finned tube 3, the system can adjust the flow path and gasification method of the gas according to actual needs. For example, when the temperature of the gearbox lubricating oil is high, the gas oil bath vaporizer 5 can be used more for gasification; when the temperature of the lubricating oil is low or a faster gasification speed is required, the heat exchange capacity of the fin tube 3 itself can be relied on more. The fin tube 3 can mix and adjust the gas from different vaporizers, thereby optimizing the supply quality and stability of the gas and ensuring that the engine obtains a suitable gas supply. By improving the heat exchange efficiency and optimizing the gas supply, the waste of gas and the generation of emissions are reduced, which is beneficial to environmental protection and energy conservation and emission reduction.

[0060] Second, as Figure 1As shown, the embodiment of the present application provides a vehicle, which includes: a gas storage cylinder assembly 1, the output end of the gas storage cylinder assembly 1 is connected to the inlet end 201 of the three-way control valve 2; a 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 the water pipe output end of the gas water bath vaporizer 4 are connected to the first outlet end 202 of the three-way control valve 2, and the gas pipe input end and the water pipe output end of the gas water bath vaporizer 4 are connected to the first outlet end 202 of the three-way control valve 2. A water cooling system for the engine assembly 9; a gas oil bath vaporizer 5, 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 the gearbox assembly 15.

[0061] In this embodiment, the gas storage cylinder assembly 1 serves as the source of gas supply, and the gas storage cylinder is responsible for storing and providing gas to the subsequent gasification device. The three-way control valve 2 has an inlet end 201 and two outlet ends (a first outlet end 202 and a second outlet end 203). The inlet end 201 is connected to the output end of the gas storage cylinder assembly 1 to achieve gas distribution and control. The gas water bath vaporizer 4 promotes gasification by water bath heating. Its gas pipe input end is connected to the first outlet end 202 of the three-way control valve 2, and receives gas from the gas storage cylinder for gasification. The gas oil bath vaporizer 5 is a key component newly added to this scheme, and improves gasification efficiency by oil bath heating. Its gas pipe input end is connected to the second outlet end 203 of the three-way control valve 2, and at the same time, its gas pipe output end is also connected to the gas pipe input end of the gas water bath vaporizer 4, forming a series gasification structure. The gas oil bath vaporizer 5 is also provided with a gearbox lubricating oil inlet 501 and a gearbox lubricating oil outlet 502, which realizes the coordinated work with the gearbox thermal management system. When the gearbox lubricating oil flows through the gas oil bath vaporizer 5, it can absorb and take away some heat, which helps to maintain the stable operating temperature of the vaporizer, while improving the lubrication effect and heat dissipation performance of the gearbox assembly 15. By using the water bath and oil bath vaporizers in series, their respective gasification advantages are fully utilized, and the gasification efficiency of the gas is significantly improved. Efficient gasification ensures the stability of the engine gas rail pressure, making the gas mixing more uniform, thereby reducing the occurrence of problems such as engine assembly 9 detonation, cold and hot shocks. The combination of the gas oil bath vaporizer 5 and the thermal management system of the gearbox assembly 15 realizes the effective utilization and transfer of heat, and improves the thermal management efficiency of the whole vehicle.

[0062] Specifically, the second outlet port 203 of the three-way control valve 2 can be controlled to be connected with the inlet port 201. On the basis of the heat exchange between the gas water bath vaporizer 4 and the engine assembly 9, the heat exchange between the gas oil bath vaporizer 5 and the lubricating oil of the gearbox assembly 15 is added, thereby realizing the heat exchange between the liquefied natural gas gasification process and the gearbox lubricating oil cooling process, and ensuring that the gearbox assembly 15 obtains the best cooling performance in the overheating mode, thereby reducing the friction loss of the gearbox assembly 15 and achieving the effect of reducing gas consumption; at the same time, the system improves the gasification capacity of the gas supply system, provides the engine assembly 9 with a more stable gas rail pressure and gas supply temperature, reduces the occurrence of problems such as detonation and hot and cold shocks, thereby achieving the effect of stable power output and saving gas consumption.

[0063] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the vehicle further includes: a pressure regulating valve 8 , which is installed between the gas pipe input end 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 pipe input end of the gas water bath vaporizer 4 and the gas inlet of the engine assembly 9 to regulate the gas pressure. The pressure regulating valve 8 can ensure that the gas pressure delivered to the engine assembly 9 is maintained within an appropriate range, thereby protecting the engine and optimizing its performance. The pressure regulating valve 8 can stabilize the gas pressure and reduce potential damage to the engine assembly 9 caused by pressure fluctuations, thereby enhancing the stability of the gas supply. By ensuring an 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 can prevent the gas pressure from being too high or too low, thereby 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 life of the entire gas supply system and the engine.

[0065] In conjunction with the second aspect, in one implementation, Figure 1 As shown, the water cooling system includes: a first cooling pipeline 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 pipeline 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 pipeline 10 or the second cooling pipeline 11; a radiator 13 and a water pump 14, which are connected in series to the first cooling pipeline 10 in sequence.

[0066] In this embodiment, one end of the first cooling pipeline 10 is connected to the water pipe output end of the gas water bath vaporizer 4 to receive the cooling water heated by the vaporizer. The other end is connected to the cooling water inlet of the engine assembly 9 to transport the cooling water to the engine for cooling. One end of the second cooling pipeline 11 is connected to the cooling water outlet of the engine assembly 9 to receive the cooling water after the engine is cooled, and the other end is connected to the water pipe input end of the gas water bath vaporizer 4 to transport the cooling water back to the vaporizer for heating and circulation. The water temperature sensor 12 is installed on the first cooling pipeline 10 or the second cooling pipeline 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 working state of the system, such as adjusting the working mode of the gas oil bath vaporizer 5 and the gas water bath vaporizer 4. The radiator 13 and the water pump 14 are connected in series in the first cooling pipeline 10 in sequence to form a circulation loop of the cooling water. The radiator 13 is used to dissipate the heat in the cooling water into the air to reduce the temperature of the cooling water. The water pump 14 is responsible for driving the cooling water to flow in the circulation loop to ensure the normal operation of the cooling system. Through the circulation connection of the first cooling pipeline 10 and the second cooling pipeline 11, an efficient cooling system is formed, which can ensure that the engine assembly 9 operates within a suitable temperature range and improve its performance and life. The introduction of the water temperature sensor 12 realizes real-time monitoring and intelligent control of the cooling water temperature, and can adjust the working state of the cooling system according to actual needs, thereby improving the flexibility and adaptability of the system. The series use of the radiator 13 and the water pump 14 improves the heat dissipation efficiency of the cooling system, reduces energy waste and the generation of emissions, and is beneficial to environmental protection and energy conservation and emission reduction.

[0067] In a third aspect, an embodiment of the present application provides a thermal management method for a gas supply system and a transmission thermal management system as described in some of the above embodiments, which comprises the following steps:

[0068] S100: Acquire the oil temperature value of the gearbox assembly 15 in real time;

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

[0070] In this embodiment, S100 obtains the oil temperature value of the gearbox assembly 15 in real time, and monitors the temperature of the gearbox oil in real time through the oil temperature sensor installed on the gearbox assembly 15. S200 determines the oil temperature and controls the three-way control valve 2. If the oil temperature value of the gearbox assembly 15 is greater than the set temperature value (the set temperature value is preset according to the normal working temperature range and safety requirements of the gearbox), the inlet end 201 of the three-way control valve 2 is controlled to be connected with the second outlet end 203. This operation allows the gas to flow out of the gas storage cylinder 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 and the gearbox oil are heat exchanged, thereby reducing the temperature of the gearbox oil. If the oil temperature value does not exceed the set temperature value, the current state of the three-way control valve 2 is maintained (that is, the inlet end 201 of the three-way control valve 2 is connected with the first outlet end 202). By obtaining the gearbox oil temperature in real time and combining it with the control strategy, intelligent regulation of the thermal state of the gearbox is achieved. When the oil temperature is too high, the heat exchange process is automatically started to effectively prevent the gearbox from overheating. The use of the gas oil bath vaporizer 5 for heat exchange not only reduces the gearbox oil temperature, but also improves the gasification efficiency of the gas. At the same time, the system improves the gasification capacity of the gas supply system, provides a more stable gas rail pressure and gas supply temperature for the engine assembly 9, reduces the occurrence of problems such as knocking and hot and cold shock, thereby achieving the effect of stable power output and saving gas consumption.

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

[0072] S300: Acquire the air rail pressure value of the engine assembly 9 in real time;

[0073] S400: If the 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 controlled to communicate with the second outlet end 203 to enable heat exchange between the gas oil bath vaporizer 5 and the gearbox assembly 15 .

[0074] In this embodiment, after S200, S300 obtains the engine gas rail pressure value in real time, and monitors the gas rail pressure value of the engine assembly 9 in real time through the sensor, which is an important parameter for evaluating the working state of the engine. S400 determines the gas rail pressure and controls the three-way control valve 2. If the gas rail pressure value is less than the set value, the three-way control valve 2 is controlled to make the gas oil bath vaporizer 5 and the gearbox assembly 15 perform heat exchange to increase the gas rail pressure and optimize the system performance. Improving the gasification capacity of the gas supply system provides the engine assembly 9 with a more stable gas rail pressure and gas supply temperature, reduces the occurrence of problems such as detonation and hot and cold shock, thereby achieving the effect of stable power output and saving gas consumption.

[0075] In some embodiments, steps S300 and S400 may be before steps S100 and S200, or be in parallel relationship with steps S100 and S200.

[0076] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0078] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A gas supply system and a gearbox thermal management system, characterized in that: It includes: A gas storage cylinder assembly (1), wherein the output end of the gas storage cylinder assembly (1) is connected to the inlet end (201) of a three-way control valve (2); A gas water bath vaporizer (4), wherein the gas pipe input end of the gas water bath vaporizer (4) is in communication with the first outlet end (202) of the three-way control valve (2); A gas oil bath vaporizer (5), 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).

2. The gas supply system and transmission thermal management system according to claim 1, characterized in that: The gas supply system and the gearbox thermal management system also include: An oil temperature sensor (6), the oil temperature sensor (6) being used to monitor the oil temperature of the gearbox assembly (15); A controller is connected to the three-way control valve (2) and the oil temperature sensor (6) by signal, and is used to control the inlet end (201) of the three-way control valve (2) to communicate with the second outlet end (203) when the temperature value monitored by the oil temperature sensor (6) reaches a set temperature value, so as to enable the gas oil bath vaporizer (5) to exchange heat with the gearbox assembly (15).

3. The gas supply system and transmission thermal management system according to claim 1, characterized in that: The gas supply system and the gearbox thermal management system also include: An air rail pressure sensor (7), the air rail pressure sensor (7) being used to monitor the pressure value of the air rail entering the engine assembly (9); A controller is connected to the three-way control valve (2) and the gas rail pressure sensor (7) by signal, and is used to control the inlet end (201) of the three-way control valve (2) to communicate with the second outlet end (203) when the gas rail pressure value monitored by the gas rail pressure sensor (7) is lower than a set gas rail pressure value, so as to enable the gas oil bath vaporizer (5) to exchange heat with the gearbox assembly (15).

4. The gas supply system and transmission thermal management system according to claim 1, characterized in that: The gas oil bath vaporizer (5) comprises: A vaporizer tank body (503), wherein a gas spiral tube (504) is arranged inside the vaporizer tank body (503), one end of the gas spiral tube (504) is connected to the second outlet end (203) of the three-way control valve (2), and the other end of the gas spiral tube (504) is connected to the gas pipe input end of the gas water bath vaporizer (4); A heat-insulating layer (505), the heat-insulating layer (505) being disposed on the vaporizer tank (503); The gearbox lubricating oil inlet (501) and the gearbox lubricating oil outlet (502) are provided in the vaporizer tank (503).

5. The gas supply system and transmission thermal management system according to claim 1, characterized in that: The gas supply system and the gearbox thermal management system also include: A fin tube (3), wherein a first gas pipe input end of the fin tube (3) is connected to a first outlet end (202) of the three-way control valve (2), a second gas pipe input end of the fin tube (3) is connected to a gas pipe output end of the gas oil bath vaporizer (5), and a gas pipe output end of the fin tube (3) is connected to a gas pipe input end of the gas water bath vaporizer (4).

6. A vehicle, characterized in that: It includes: A gas storage cylinder assembly (1), wherein the output end of the gas storage cylinder assembly (1) is connected to the inlet end (201) of a three-way control valve (2); A gas water bath vaporizer (4), wherein 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), 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).

7. The vehicle according to claim 6, characterized in that The vehicle further comprises: A pressure regulating valve (8) is installed between the gas pipe input end of the gas water bath vaporizer (4) and the gas inlet of the engine assembly (9).

8. The vehicle according to claim 6, characterized in that The water cooling system comprises: A first cooling pipeline (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 pipeline (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), the water temperature sensor (12) being installed in the first cooling pipeline (10) or the second cooling pipeline (11); A radiator (13) and a water pump (14), wherein the radiator (13) and the water pump (14) are sequentially connected in series to the first cooling pipeline (10).

9. A thermal management method for a gas supply system and a transmission thermal management system according to any one of claims 1 to 5, characterized in that: It includes the following steps: Acquire the oil temperature value of the gearbox assembly (15) in real time; 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 controlled to communicate with the second outlet end (203), so that the gas oil bath vaporizer (5) and the gearbox assembly (15) can exchange heat.

10. The thermal management method of the gas supply system and the transmission thermal management system according to claim 9, characterized in that: If the oil temperature value of the gearbox assembly (15) is greater than the set temperature value, the inlet end (201) of the three-way control valve (2) is controlled to communicate with the second outlet end (203) so that the gas oil bath vaporizer (5) and the gearbox assembly (15) exchange heat, and then the method comprises: Acquiring the air rail pressure value of the engine assembly (9) in real time; If the gas 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 controlled to communicate with 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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