Vehicle hybrid power system and vehicle

Abstract

The invention provides a vehicle hybrid power system and a vehicle, the vehicle hybrid power system comprises a hybrid engine, a plurality of fuel supply subsystems and a control module, the control module is used for responding to an operation signal sent by a driver, and controlling a target fuel supply subsystem to convey stored fuel to the hybrid engine for combustion; the fuel supply subsystems store different fuels, natural gas LNG / CNG and biodiesel can be used as the fuel of the long-distance vehicle, and the fuel types can be freely switched and selected or optimal control can be realized, so that the requirements of different scenes and working conditions are met; and the dynamic property, economical efficiency, fuel use convenience and the like of the whole vehicle can be improved, and the transportation cost is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a hybrid power system and a vehicle. Background Technology

[0002] Currently, diesel or natural gas-powered heavy-duty commercial trucks sold in the long-haul highway transportation market mainly use a single fuel supply system. To protect the environment and reduce energy consumption and emissions, traditional high-carbon diesel heavy-duty trucks urgently need to be transformed into alternative and cleaner energy sources. Factors such as natural gas supply, refueling convenience, price fluctuations, driving range, and overall transportation costs also significantly impact actual vehicle operation, making the need for switching to different fuels increasingly prominent. Summary of the Invention

[0003] The purpose of this application is to provide a vehicle hybrid power system and vehicle to solve the problem that existing long-distance vehicle models use a single fuel, which affects the operating cost.

[0004] In a first aspect, the present invention provides a vehicle hybrid power system, the system including a hybrid engine, multiple fuel supply subsystems and a control module, wherein the control module is used to respond to the operation signal issued by the driver and control the target fuel supply subsystem to deliver the stored fuel to the hybrid engine for combustion to provide power to the target vehicle, and the fuel stored in each fuel supply subsystem is different.

[0005] In an optional implementation, the multiple fuel supply subsystems include an LNG supply subsystem, a CNG supply subsystem, and a diesel supply subsystem.

[0006] In an optional implementation, the LNG supply subsystem includes at least an LNG storage module and an LNG pressure module. The control module is used to respond to a first operation signal issued by the driver through the vehicle's operation switch, control the LNG pressure module to convert the liquefied natural gas stored in the LNG storage module into gaseous natural gas, which is then delivered to the hybrid engine for combustion to provide power to the target vehicle.

[0007] In an optional implementation, the CNG supply subsystem includes at least a CNG pressure module and a CNG storage module. The control module is used to respond to a second operation signal issued by the driver through the vehicle's operation switch, control the CNG pressure module, and deliver the compressed natural gas stored in the CNG storage module to the hybrid engine for combustion to provide power to the target vehicle.

[0008] In an optional implementation, the diesel supply subsystem includes at least a diesel pressure module and a diesel storage module. The control module responds to a third operation signal issued by the driver through the vehicle's operating switch, controls the diesel pressure module to draw out and pressurize the diesel stored in the diesel storage module, and deliver it to the hybrid engine for combustion to provide power to the target vehicle.

[0009] In an optional implementation, the control module is also configured to respond to a fourth operation signal issued by the driver through the vehicle's operation switch, control the LNG pressure module to convert the liquefied natural gas stored in the LNG storage module into high-pressure gaseous natural gas, and deliver it to the combustion chamber of the hybrid engine. At the same time, it controls the diesel pressure module to draw out the diesel stored in the diesel storage module, pressurize it, and inject it into the combustion chamber of the hybrid engine to ignite the gaseous natural gas mixed with air, thereby providing power to the target vehicle.

[0010] In an optional implementation, the control module is also used to acquire the target path information set by the driver, and generate power mode assistance information based on the target path information to help the driver issue operation signals.

[0011] Secondly, the present invention provides a vehicle, the vehicle including a vehicle hybrid power system as described in any of the foregoing embodiments and a fault diagnosis module, the fault diagnosis module being used to collect operating parameters of the fuel supply subsystem and the hybrid engine, determine whether a fault has occurred in the vehicle hybrid power system, and if a fault has occurred, generate a fault signal and send it to the control module.

[0012] In an optional implementation, the vehicle also includes a central control screen for displaying fault information corresponding to the fault signal.

[0013] In an optional implementation, the central control screen is also used to display power mode assistance information generated by the control module.

[0014] This application provides a hybrid vehicle system and vehicle. The system includes a hybrid engine, multiple fuel supply subsystems, and a control module. The control module responds to driver input signals and controls the target fuel supply subsystem to deliver stored fuel to the hybrid engine for combustion, thus powering the target vehicle. Each fuel supply subsystem stores a different type of fuel. By employing a multi-fuel hybrid engine, natural gas (LNG / CNG) and biodiesel can be used as fuel for long-distance vehicles. The system allows for flexible switching between fuel types and optimal control to meet the needs of different scenarios and operating conditions. It also improves vehicle power, economy, and fuel convenience, reduces transportation costs, creates value for users, and contributes to energy conservation and emission reduction in transportation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a vehicle hybrid power system provided in an embodiment of this application; Figure 2 This is a vehicle control logic diagram provided in an embodiment of this application. Attached image description: 10-Control module, 20-LNG supply subsystem, 30-CNG supply subsystem, 40-Diesel supply subsystem, 50-Hybrid generator, 60-Fault diagnosis module, 70-Display module, 80-Switch module, 801-Driver control switch, 802-Optimal control switch. Detailed Implementation

[0018] First, the application scenario of this application will be described. The technical solution of this application is applicable to the design of commercial vehicle chassis and the formation of control strategies for long-distance combined transportation conditions.

[0019] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of a vehicle hybrid power system provided as an embodiment of this application. Figure 1 As shown, the system includes a hybrid engine, multiple fuel supply subsystems, and a control module.

[0021] The hybrid engine here is a multi-fuel hybrid engine, which can use natural gas (LNG / CNG) or biodiesel, or high-pressure natural gas injected into the combustion chamber after biodiesel compression ignition. Through the mixed fuel combustion technology of the multi-fuel hybrid engine, it provides power to the vehicle.

[0022] Each fuel supply subsystem stores different fuels. Specifically, it can include an LNG supply subsystem, a CNG supply subsystem, and a diesel supply subsystem. The diesel fuel can be regular diesel or biodiesel, and other biofuels such as bio-dimethyl ether can also be used as substitutes. The CNG fuel can also be replaced by fuels such as methanol.

[0023] Specifically, the LNG supply subsystem includes at least an LNG storage module, an LNG pressure module, control valves and other components such as sensors, pipelines, and wiring harnesses. The LNG supply subsystem is used to store and manage liquefied natural gas, converting it into high-pressure gaseous natural gas through electronic or hydraulic LNG pressure modules.

[0024] The CNG supply subsystem includes at least a CNG pressure module and a CNG storage module, control valves, and other components such as various sensors, pipelines, and wiring harnesses. The CNG supply subsystem is used to store and manage high-pressure compressed gaseous natural gas.

[0025] The diesel supply subsystem includes at least a diesel pressure module, a diesel storage module, control valves, and other components such as sensors, piping, and wiring harnesses. The diesel supply subsystem is used to store and manage biodiesel. The diesel pressure module here can be a fuel pump.

[0026] Specifically, the control module can acquire the target path information set by the driver and generate power mode assistance information based on the target path information to help the driver issue operation signals.

[0027] The driver can input travel information such as the current destination (e.g., from location A to location B, passing through locations C and D along the way) via the central control screen. The control module is used to control fuel switching and fuel supply mode. It can use a pre-set vehicle power optimization algorithm to perform calculations based on travel information such as navigation route, region, operating conditions, scenario, environment, mileage, load, fuel price, gas price, and the layout of fuel / gas refueling stations along the route, and dynamically recommend a power mode to the driver in real time that improves economy while ensuring power and timeliness.

[0028] The power mode assistance information can be displayed on the central control screen or the instrument panel, providing the optimal fuel type based on the vehicle's current location and route. When displayed on the instrument panel, the icon corresponding to the target power mode can flash at a preset frequency.

[0029] The control module can respond to the driver's operation signals and control the target fuel supply subsystem to deliver the stored fuel to the hybrid engine for combustion in order to power the target vehicle.

[0030] Here, the driver can activate the vehicle's power optimization control mode via driver-operated switches, such as pressing physical buttons, toggling switches, or clicking virtual controls on the central control screen. The driver can refer to the power mode assistance information, combine their experience with the vehicle's status, and freely select the desired power mode, issuing the corresponding operation signal to switch the corresponding fuel supply subsystem to deliver fuel to the hybrid engine to drive the vehicle. This solves problems related to gas supply, gas price fluctuations, and refueling convenience, making driving easier and reducing overall transportation costs in long-distance logistics.

[0031] Furthermore, the driver can also choose whether to enable the vehicle dynamics optimization algorithm via the optimal control switch.

[0032] The hybrid vehicle system provided in this application, by adopting a multi-fuel hybrid engine, can use natural gas (LNG / CNG) or biodiesel as fuel for long-distance vehicles, and can freely switch between fuel types or achieve optimal control to meet the needs of different scenarios and operating conditions. It can also improve the overall vehicle power, economy, and fuel use convenience, reduce transportation costs, create value benefits for users, and contribute to energy conservation and emission reduction in transportation.

[0033] In one embodiment of this application, a first application scenario involves a driver wanting to switch LNG as the vehicle's driving fuel. The control module responds to a first operation signal from the driver via a vehicle control switch, controlling the LNG pressure module to convert the liquefied natural gas stored in the LNG storage module into high-pressure gaseous natural gas, which is then delivered to the hybrid engine for combustion, providing power to the target vehicle. High-pressure injected natural gas burns more completely, resulting in higher thermal efficiency and stronger power, thus improving the overall vehicle performance.

[0034] The second application scenario is when the driver wants to switch CNG as the vehicle's driving fuel. The control module can respond to the second operation signal issued by the driver through the vehicle's operating switch, controlling the CNG pressure module to deliver the compressed natural gas stored in the CNG storage module to the hybrid engine for combustion, providing power to the target vehicle.

[0035] The third application scenario is when the driver wants to switch between biodiesel and diesel as the vehicle's driving fuel. The control module can respond to the third operation signal issued by the driver through the vehicle's operating switch, control the diesel pressure module to draw out and pressurize the diesel stored in the diesel storage module, and deliver it to the hybrid engine for combustion to provide power to the target vehicle.

[0036] The third application scenario addresses the issues of slow transient response, poor power, and vehicle PID calibration problems associated with traditional LNG. One embodiment of this application provides a power mode that uses biodiesel compression ignition followed by LNG ignition. The control module responds to a fourth operation signal issued by the driver via a vehicle operation switch, controlling the LNG pressure module to convert the liquefied natural gas stored in the LNG storage module into high-pressure gaseous natural gas, which is then delivered to the combustion chamber of the hybrid engine. Simultaneously, it controls the diesel pressure module to extract and pressurize the diesel stored in the diesel storage module, injecting it into the combustion chamber of the hybrid engine to ignite the gaseous natural gas mixed with air, thus providing power to the target vehicle.

[0037] Specifically, in the third application scenario, the LNG pressure module is connected to one end of the first connecting pipe, and the other end of the first connecting pipe is connected to the first port of the mixing section. The diesel pressure module is connected to one end of the second connecting pipe, and the other end of the second connecting pipe is connected to the second port of the mixing section. The third port of the mixing section is connected to the first end of the third connecting pipe, and the other end of the third connecting pipe is connected to the hybrid engine. The mixing section can be a tee fitting or a mixing chamber forming a fuel mixing and containment space. This allows for better mixing and joint combustion of diesel and high-pressure LNG, improving fuel efficiency. The vehicle hybrid power system provided in this application, through switching between different power modes, can effectively solve and adapt to the complexity of multiple scenarios, operating conditions, and fuel selections in long-distance transportation, thereby reducing the overall vehicle transportation cost and creating significant value benefits for users from the perspective of total cost of ownership (TCO), while also bringing social benefits to transportation energy emissions.

[0038] like Figure 2 As shown, in one embodiment of this application, a vehicle is provided. The vehicle includes a hybrid power system and a fault diagnosis module as described in the foregoing embodiments. The fault diagnosis module is used to collect operating parameters of the fuel supply subsystem and the hybrid engine, determine whether a fault has occurred in the hybrid power system, and if a fault has occurred, generate a fault signal and send it to the control module. The vehicle also includes a central control display screen, which is used to display fault information corresponding to the fault signal. Figure 2 Solid lines are used to represent physical connections, such as pipe connections, while dashed lines are used to represent electrical connections, such as wire harness connections. Arrows can indicate the direction of fuel delivery or signal transmission.

[0039] In the event of a supply system failure, the OBD fault diagnosis module can transmit the fault signal to the control module in real time. The control module will then provide the driver with information prompts or alarms through the instrument panel or central control screen, allowing the driver to view relevant information and make decisions, thus ensuring vehicle driving safety.

[0040] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0041] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0042] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0043] It should be noted that if the function is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0044] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0045] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle hybrid power system, characterized in that, The system includes a hybrid engine, multiple fuel supply subsystems, and a control module. The control module is used to respond to the driver's operation signals and control the target fuel supply subsystem to deliver stored fuel to the hybrid engine for combustion, thereby providing power to the target vehicle. Each fuel supply subsystem stores a different type of fuel.

2. The system according to claim 1, characterized in that, Multiple fuel supply subsystems include an LNG supply subsystem, a CNG supply subsystem, and a diesel supply subsystem.

3. The system according to claim 2, characterized in that, The LNG supply subsystem includes at least an LNG storage module and an LNG pressure module. The control module is used to respond to the first operation signal issued by the driver through the vehicle's operation switch, control the LNG pressure module to convert the liquefied natural gas stored in the LNG storage module into gaseous natural gas, which is then delivered to the hybrid engine for combustion to provide power to the target vehicle.

4. The system according to claim 2, characterized in that, The CNG supply subsystem includes at least a CNG pressure module and a CNG storage module. The control module is used to respond to the second operation signal issued by the driver through the vehicle's operation switch, control the CNG pressure module, and deliver the compressed natural gas stored in the CNG storage module to the hybrid engine for combustion to provide power to the target vehicle.

5. The system according to claim 3, characterized in that, The diesel supply subsystem includes at least a diesel pressure module and a diesel storage module. The control module is used to respond to a third operation signal issued by the driver through the vehicle's operation switch, control the diesel pressure module to draw out and pressurize the diesel stored in the diesel storage module, and deliver it to the hybrid engine for combustion to provide power to the target vehicle.

6. The system according to claim 5, characterized in that, The control module is also used to respond to a fourth operation signal issued by the driver through the vehicle's operation switch, control the LNG pressure module to convert the liquefied natural gas stored in the LNG storage module into high-pressure gaseous natural gas, and deliver it to the combustion chamber of the hybrid engine. At the same time, it controls the diesel pressure module to draw out the diesel stored in the diesel storage module, pressurize it, and inject it into the combustion chamber of the hybrid engine to ignite the gaseous natural gas mixed with air to provide power to the target vehicle.

7. The system according to claim 1, characterized in that, The control module is also used to acquire the target path information set by the driver, and generate power mode assistance information based on the target path information to help the driver issue operation signals.

8. A vehicle, characterized in that, The vehicle includes a vehicle hybrid power system and a fault diagnosis module as described in any one of claims 1 to 7. The fault diagnosis module is used to collect operating parameters of the fuel supply subsystem and the hybrid engine, determine whether a fault has occurred in the vehicle hybrid power system, and if a fault has occurred, generate a fault signal and send it to the control module.

9. The vehicle according to claim 8, characterized in that, The vehicle also includes a central control screen, which is used to display fault information corresponding to the fault signal.

10. The vehicle according to claim 9, characterized in that, The central control screen is also used to display power mode auxiliary information generated by the control module.

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