Engine control method and system of hybrid amphibious vehicle

Abstract

The invention discloses an engine control method and system for a hybrid amphibious vehicle. The method comprises the steps that an engine control instruction is monitored; when the engine control instruction is an engine starting instruction, the mode of the vehicle is judged; when the mode of the vehicle is the land driving mode, the states of an air inlet closing valve and an exhaust closing valve of the vehicle are obtained; when an air inlet closing valve and an exhaust closing valve of the vehicle are both in an open state, an engine starting instruction is executed; and when the air inlet closing valve and / or the exhaust closing valve of the vehicle are / is in the closed state, starting of the engine is forbidden. When the engine is started, the mode of the vehicle and the states of the recent closing valve and the exhaust closing valve are judged firstly, so that the starting safety of the engine is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and in particular to an engine control method and system for a hybrid amphibious vehicle. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Amphibious vehicles are a new type of transportation that can travel on both water and land, possessing both the land-based performance of automobiles and the water-based driving performance of boats.

[0004] To improve the range of amphibious vehicles, range extender engines are used to provide power.

[0005] In related technologies, when the range extender engine performs engine start control, it directly starts the engine according to the engine start command. When the amphibious vehicle is in water navigation mode, starting the engine according to the engine start command can easily cause water to enter and damage the engine. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes an engine control method and system for a hybrid amphibious vehicle. When the engine starts, the system first determines the vehicle's operating mode and the status of the intake and exhaust valves to ensure safe engine startup.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: Firstly, a method for controlling the engine of a hybrid amphibious vehicle is proposed, including: Monitor engine control commands; When the engine control command is an engine start command, determine the vehicle's current mode; When the vehicle is in water navigation mode, the engine must not be started; When the vehicle is in land driving mode, obtain the status of the vehicle's intake and exhaust valves. When both the vehicle's intake and exhaust shut-off valves are open, the engine start command is executed. The engine must not be started when the vehicle's intake shut-off valve and / or exhaust shut-off valve are in the closed position.

[0008] Furthermore, the process of executing the engine start command includes: Control the engine to start and obtain the generator speed at a set time; Determine whether the engine rotation direction is correct based on the generator speed value; When the engine is rotating in the correct direction, control the engine to start and reach the set speed; When the engine rotates in the wrong direction, control the engine to stop starting.

[0009] Furthermore, the generator speed at the set time is less than the engine ignition speed.

[0010] Furthermore, after the engine starts, the generator speed and power generation command are obtained; Determine whether the generator speed direction matches the generator command direction; When there is a mismatch, the generator must not be started to generate electricity; When a match is found, the power generation command is executed.

[0011] Furthermore, when the engine control command is an engine stop ignition command, the generator is controlled to output torque in the opposite direction to the engine rotation until the engine speed is 0.

[0012] Furthermore, when the engine speed drops to the set speed, the generator is controlled to stop outputting torque.

[0013] Secondly, an engine control system for a hybrid amphibious vehicle is proposed, including: The command monitoring unit is used to monitor engine control commands; The vehicle mode determination unit is used to determine the vehicle mode when the engine control command is an engine start command. The engine control unit is used to prevent engine starting when the vehicle is in water navigation mode; to obtain the status of the vehicle's intake and exhaust shut-off valves when the vehicle is in land driving mode; to execute the engine start command when both the intake and exhaust shut-off valves are open; and to prevent engine starting when the intake and / or exhaust shut-off valves are closed.

[0014] Thirdly, a computer device is proposed, the device comprising: A processor, adapted to execute computer programs; A computer-readable storage medium storing a computer program, which, when executed by the processor, implements the engine control method for a hybrid amphibious vehicle proposed in the first aspect.

[0015] Fourthly, a computer-readable storage medium is proposed, which stores a computer program adapted to be loaded and executed by a processor, which is a method for controlling the engine of a hybrid amphibious vehicle proposed in the first aspect.

[0016] Fifthly, a computer program product is proposed, which includes a computer program that, when executed by a processor, implements the engine control method for a hybrid amphibious vehicle proposed in the first aspect.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention proposes an engine control method and system for a hybrid amphibious vehicle. Upon receiving an engine start command, the method first determines the vehicle's operating mode. When the vehicle is in water navigation mode, engine start is prohibited. When the vehicle is in land driving mode, the engine start command is executed only when both the intake and exhaust valves are open, ensuring the safety of the engine's operating environment and preventing engine damage.

[0018] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0020] Figure 1 This is a flowchart of the start-up control process in an engine control method for a hybrid amphibious vehicle proposed in an embodiment of the present invention. Figure 2 This is a flowchart of the power generation and shutdown control process in the engine control method of a hybrid amphibious vehicle proposed in an embodiment of the present invention. Figure 3 This is a schematic diagram of the structural connections of the range-extending engine proposed in an embodiment of the present invention; Figure 4 This is a block diagram of the range extender engine system proposed in an embodiment of the present invention; Figure 5 This is the main circuit of the generator controller proposed in an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] In this invention, terms such as "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "side," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

[0025] In this invention, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this invention based on the specific circumstances, and they should not be construed as limitations on the invention.

[0026] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0027] It should be noted that all data acquisition is conducted in accordance with laws and regulations and with user consent, and the data is used legally.

[0028] First, the application scenarios and application systems of the engine control method for a hybrid amphibious vehicle proposed in the embodiments of the present invention will be described.

[0029] The present invention proposes an engine control method for a hybrid amphibious vehicle, which is applied to the application scenario of range-extending engine control for amphibious vehicles.

[0030] like Figure 3 , Figure 4 and Figure 5As shown, the range extender engine system includes an engine system and a starting system. The engine system includes an engine, an engine controller, an intake system, and an exhaust system. The starting system includes an engine controller (ECU), a generator, and a generator controller (GCU). The engine system is responsible for the engine's operation and power output, while the starting system is responsible for starting and stopping the engine normally, and simultaneously generating electricity to store in the battery or power the drive motor system to drive the vehicle. The engine and generator are directly connected without any intermediate speed reduction mechanism.

[0031] In related technologies, the logic for controlling the engine in a range-extended engine system is as follows: the engine starts when the battery charge reaches the set battery charge level (power reserve); or when high power output is required in rock mode, sand mode, etc.; when the engine starts, it supplies power to the vehicle and simultaneously drives the generator to generate electricity for the power battery, storing the electrical energy in the power battery or using it for the drive motor system to drive the vehicle; when the engine does not start, the power battery supplies power to the vehicle.

[0032] In recent years, with the advancement of technologies such as batteries, electric drives, and electronic controls, new energy vehicles are rapidly penetrating the market. Among them, PHEVs (plug-in hybrid electric vehicles) and REEVs (range-extended electric vehicles) have eliminated long-distance range anxiety while also taking into account the economy of urban use, and are being widely accepted by the market.

[0033] Furthermore, with the diversification of user needs, the demand for amphibious vehicles is also increasing. Amphibious vehicles are a new type of transportation capable of operating on both water and land, possessing both the land-based performance of automobiles and the water-based propulsion capabilities of boats. They have broad application value in both military and civilian fields. In complex terrain scenarios, they can cross rivers, lakes, and seas without being limited by bridges or boats, and can fulfill their transportation functions in both military and civilian sectors. They also have broad application prospects in specialized fields such as disaster relief and rescue, and have some applications in the tourism industry.

[0034] To improve the range of amphibious vehicles, range extender engines can be used to power them. Amphibious vehicles have two modes: water navigation and land driving. When an amphibious vehicle is in water navigation mode or has just switched from water navigation mode to land driving mode, if the engine is started according to the engine start command, it is easy for water to enter and damage the engine.

[0035] To further prevent water from entering the engine through the air intake and exhaust ports when the amphibious vehicle is in surface navigation mode or has just switched from surface navigation mode to land driving mode, intake and exhaust shut-off valves can be installed at the engine intake and exhaust ports respectively. When the vehicle switches from land driving mode to surface navigation mode, the intake and exhaust shut-off valves are closed. When the vehicle switches from surface navigation mode to land driving mode, to prevent residual water from entering the engine, the vehicle will not immediately and fully open the intake and exhaust shut-off valves. It needs to wait for a period of time before opening the intake and exhaust shut-off valves. If the engine is forcibly started according to the engine start command during this period, it is still easy to damage the engine.

[0036] In addition, due to the limitations of the engine's structure and operating principle in the range extender engine system, the engine can only rotate in one direction to output power. If it rotates in the opposite direction, it will cause mechanical damage to the engine and even cause a safety accident. In order to prevent engine damage, anti-reverse control of the engine is required. Related technologies mainly use mechanical state or logic control to perform anti-reverse control of the engine. However, when using logic control to perform anti-reverse control of the engine, it is necessary to monitor the engine speed in real time, which is more complicated.

[0037] To address the aforementioned problems, this invention proposes an engine control method for a hybrid amphibious vehicle. This method, applied to a hybrid amphibious vehicle, includes a range extender engine, a generator, an engine controller, a generator controller, a power battery, an intake shut-off valve, an exhaust shut-off valve, and a hybrid controller. The hybrid controller sends engine control commands to the engine controller and the generator controller. Based on the engine control commands and the states of the exhaust and intake shut-off valves, the engine controller and generator controller determine whether the engine control requirements are met. If the engine control requirements are met, they control the engine and generator to execute the engine control commands. After the engine starts, it drives the generator to rotate synchronously. The generator controller receives a power generation command and determines whether to execute it. If it determines that the power generation command should be executed, it controls the generator to execute the power generation command, providing power to the power battery or driving the motor.

[0038] The generator resolver can provide real-time feedback on the absolute position of the generator rotor. The generator controller calculates the generator speed and rotation direction by continuously sampling the rotor's position changes. Since the engine and generator are directly connected without an intermediate speed reduction mechanism, the engine speed and rotation direction can be directly determined based on the generator's speed and rotation direction.

[0039] The generator controller's output U / V / W phase lines and signal lines are connected to the generator's input U / V / W phase lines and signal lines. The generator controller receives commands from the hybrid control unit (HCU) and the intake and exhaust shut-off valve statuses from the intake and exhaust shut-off valve ECUs via the CAN bus. The generator output shaft is mechanically connected to the engine crankshaft via a torsional damper.

[0040] In this system, the engine rotates counterclockwise (viewed from the generator towards the engine), and this is the only direction; otherwise, the engine will be damaged. The generator rotor, connected to it via a torsional damper, rotates clockwise (viewed from the engine towards the generator).

[0041] Based on the above application scenarios and systems, a method for controlling the engine of a hybrid amphibious vehicle proposed in this embodiment of the invention will be described in detail.

[0042] This invention proposes an engine control method for a hybrid amphibious vehicle. By restricting the engine start command to being executed only when the vehicle is in water navigation mode or land driving mode, but the intake and exhaust shut-off valves are not open, the method ensures the safety of the engine operating environment, prevents engine damage, and implements anti-reverse towing protection control for the generator. This improves the reliability and safety of the system while saving costs.

[0043] like Figure 1 , Figure 2 As shown in the embodiment of the present invention, an engine control method for a hybrid amphibious vehicle includes: Monitor engine control commands; When the engine control command is an engine start command, determine the vehicle's current mode; When the vehicle is in water navigation mode, the engine must not be started; When the vehicle is in land driving mode, obtain the status of the vehicle's intake and exhaust valves. When both the vehicle's intake and exhaust shut-off valves are open, the engine start command is executed. The engine must not be started when the vehicle's intake shut-off valve and / or exhaust shut-off valve are in the closed position.

[0044] The present invention proposes an engine control method for a hybrid amphibious vehicle. Upon receiving an engine start command, the method first determines the vehicle's operating mode. When the vehicle is in water navigation mode, engine start is prohibited. When the vehicle is in land driving mode, the engine start command is executed only when both the intake and exhaust valves are open, in order to ensure the safety of the engine's operating environment and prevent engine damage.

[0045] In some embodiments, engine control commands include engine start commands and engine stop ignition commands.

[0046] like Figure 1 As shown, when the engine control command is an engine start command, the vehicle's current mode is determined. When the vehicle is in water navigation mode, the engine must not be started; When the vehicle is in land driving mode, obtain the status of the vehicle's intake and exhaust valves. When both the vehicle's intake and exhaust shut-off valves are open, the engine start command is executed. The engine must not be started when the vehicle's intake shut-off valve and / or exhaust shut-off valve are in the closed position.

[0047] The amphibious vehicle of this invention is equipped with a valve opening position sensor, which detects whether the air intake shut-off valve and the exhaust shut-off valve are open or closed.

[0048] In some embodiments, the process of executing an engine start command includes: Control the engine to start and obtain the generator speed at a set time; Determine whether the engine rotation direction is correct based on the generator speed value; When the engine is rotating in the correct direction, control the engine to start and reach the set speed; When the engine rotates in the wrong direction, control the engine to stop starting.

[0049] By predicting the engine's rotation direction in advance and then controlling the engine to stop starting when the rotation direction is incorrect, anti-reverse control is achieved when the engine starts, thus ensuring the accuracy of the engine's rotation direction.

[0050] The generator speed at the set time is less than the engine ignition speed. This generator speed can be obtained through calibration, such as selecting -50 rpm.

[0051] The engine ignition speed is a preset parameter that can be determined based on basic vehicle information, such as 750 rpm.

[0052] The rules for determining whether the engine rotation direction is correct are preset in advance, specifically: When the generator speed is negative, the engine rotation direction is determined to be correct; When the generator speed is positive, it is determined that the engine rotation direction is incorrect.

[0053] When executing the engine start command, the generator rotation direction is first determined when the engine is at low speed. The engine will only continue to start if the engine rotation direction is correct, thus ensuring the accuracy of the rotation direction after the engine starts and realizing anti-reverse control during the engine start process.

[0054] In some embodiments, after the engine starts, the generator speed and power generation command are obtained; Determine whether the generator speed direction matches the generator command direction; When there is a mismatch, the generator must not be started to generate electricity; When a match is found, the power generation command is executed.

[0055] like Figure 2 As shown, after the engine starts, the direction of the generator's rotation speed is already determined. At this time, when the generator command is received, it is first determined whether the direction of the generator's rotation speed matches the direction of the generator command. Only when they match will the generator command be executed. The generator generates an electromagnetic torque that opposes the rotor's rotation (i.e., the direction of the torque is opposite to the direction of the rotation speed), converting the engine's mechanical energy into electrical energy through the generator system to charge the power battery and simultaneously supply power to the vehicle's drive motor system.

[0056] In some embodiments, when the generator speed direction matches the generator command direction, it is also necessary to determine whether the generator speed is less than 0 when executing the generator command. The generator command is only executed when the generator speed is less than zero; the generator command is prohibited from being executed when the generator speed is greater than or equal to 0.

[0057] In some embodiments, when the engine control command is an engine stop ignition command (stop command), the generator is controlled to output torque in the opposite direction to the engine rotation until the engine speed is 0.

[0058] like Figure 2 As shown, upon receiving a shutdown command, the generator first determines whether the generator speed direction matches the shutdown command direction. Only when the generator speed direction matches the shutdown command direction will the shutdown command be executed, thereby controlling the generator to output torque in the opposite direction to the engine rotation to limit engine rotation. When the generator speed direction does not match the shutdown command direction, the shutdown command will not be executed.

[0059] During engine shutdown, the engine stops ignition. At this time, due to inertia, the engine is still rotating. In order to stop rotating more quickly and achieve a fast and accurate shutdown, the generator needs to output a torque command in the opposite direction to suppress the engine's rotation. At this time, the torque output of the generator needs to be adjusted according to the generator speed. It is important to avoid having torque still present when the speed is zero, as this would cause the engine to be dragged in the opposite direction, which would not only fail to stop the engine but also cause it to start rotating again.

[0060] From a mechanical perspective, the generator acts as a "load" or "brake" at this time, converting the engine's rotational kinetic energy into electrical energy, thereby rapidly dissipating its inertia and achieving the purpose of rapid deceleration.

[0061] Therefore, in order to prevent the generator from outputting torque after the engine speed reaches 0, the direction and magnitude of the generator speed are judged during the engine shutdown process. When the engine speed drops to the set speed, it indicates that the speed dead zone has been entered, and the generator is controlled to stop outputting torque to avoid outputting too much force when the engine is at low speed.

[0062] The set speed can be determined by pre-calibration, such as -100rpm, -50rpm, or -30rpm. Once the speed enters the dead zone, it is necessary to quickly (usually by ramping down or immediately stepping up) set the generator's torque command to 0 to avoid outputting excessive force at low speeds.

[0063] During the process from engine ignition stop to engine deceleration to the set speed, the generator speed is acquired in real time, and the generator output torque is determined by looking up a table based on the generator speed. This table is determined by calibrating the range extender engine system in advance. The generator output torque can limit the engine rotation, and the generator output torque increases as the generator speed increases.

[0064] The magnitude of the generator's output torque must be a function of its rotational speed. It is typically a negative-slope curve: the higher the generator speed, the greater the braking torque; as the speed decreases, the braking torque also decreases accordingly.

[0065] Furthermore, in the embodiments of the present invention, when a change in the direction of engine speed is detected during the shutdown process, it is determined that reverse drag has occurred or is about to occur. Once the direction is unexpectedly reversed, the control system should immediately cancel the torque command and may need to short-circuit the generator stator (active short-circuit ASC function) to generate a resistance torque opposite to the direction of motion in order to eliminate the slight oscillation and allow mechanical friction to eventually stop the shaft near zero.

[0066] In this embodiment of the invention, when an engine control command is detected, and the vehicle is determined to be prohibited from responding to the command or to stop responding to the command, an alarm message is also issued.

[0067] Specifically, when an engine start command is received, if the vehicle is in water navigation mode or land driving mode but the vehicle's intake and / or exhaust valves are closed, or if the engine rotation direction is found to be incorrect during the execution of the engine start command, an alarm message will be issued.

[0068] When a power generation command is received, if the generator speed direction does not match the power generation command direction, or if the generator speed direction is found to be incorrect during the execution of the power generation command, an alarm message will be issued.

[0069] By issuing corresponding alarm messages, personnel are reminded to handle the problem in a timely manner.

[0070] This invention proposes an engine control method for a hybrid amphibious vehicle. Upon receiving an engine start command, the method first determines the vehicle's current mode. If the vehicle is in water navigation mode, engine start is prohibited. If the vehicle is in land driving mode, the engine start command is only executed when both the intake and exhaust valves are open, ensuring the safety of the engine's operating environment and preventing engine damage. Furthermore, during engine start-up, the method determines the engine's rotation direction at low speeds to prevent reverse rotation. During engine shutdown, the method determines the engine's rotation direction based on the generator speed and... The size of the generator output torque is controlled to prevent the engine from reversing due to generator drag after the engine speed reaches 0, thus achieving engine anti-reverse drag protection control. This reduces the safety risk of engine mechanical damage caused by reverse drag during start-up, power generation, and shutdown, improving engine reliability and ensuring normal power generation function. It also saves costs. In addition, the engine control method for hybrid amphibious vehicles proposed in this embodiment of the invention also issues corresponding alarm information when it is determined that the command cannot be executed or cannot continue to be executed, so as to remind personnel to check and handle it. This solves the safety risk of damage caused by reverse drag to the range-extended engine in hybrid amphibious vehicles during start-up, power generation, and shutdown.

[0071] This invention also proposes an engine control system for a hybrid amphibious vehicle, comprising: The command monitoring unit is used to monitor engine control commands; The vehicle mode determination unit is used to determine the vehicle mode when the engine control command is an engine start command. The engine control unit is used to prevent engine starting when the vehicle is in water navigation mode; to obtain the status of the vehicle's intake and exhaust shut-off valves when the vehicle is in land driving mode; to execute the engine start command when both the intake and exhaust shut-off valves are open; and to prevent engine starting when the intake and / or exhaust shut-off valves are closed.

[0072] It should be noted that the engine control system for a hybrid amphibious vehicle provided in the above embodiments is only illustrated by the division of the functional modules described above when controlling the engine of the amphibious vehicle. In practical applications, the functions described above can be assigned to different functional modules as needed, that is, the internal structure of the equipment can be divided into different functional modules to complete all or part of the functions described above. In addition, the engine control system for a hybrid amphibious vehicle provided in the above embodiments and the engine control method embodiment for a hybrid amphibious vehicle belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0073] The present invention also discloses a computer device, the device comprising: A processor, adapted to execute computer programs; A computer-readable storage medium storing a computer program, which, when executed by the processor, implements an engine control method for a hybrid amphibious vehicle disclosed in an embodiment of the present invention.

[0074] The computer device can be a portable mobile terminal, such as a smartphone, tablet, laptop, or desktop computer. Typically, a computer device includes a processor and memory.

[0075] A processor may include one or more processing cores, such as a core processor or a core processor. The processor may be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the screen. In some embodiments, the processor may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0076] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory are used to store at least one computer program, which is executed by a processor to implement the intelligent vehicle control method provided in the method embodiments of this application.

[0077] In some embodiments, the computer device may also optionally include: a peripheral device interface and at least one peripheral device. The processor, memory, and peripheral device interface can be connected via a bus or signal line. Each peripheral device can be connected to the peripheral device interface via a bus, signal line, or circuit board. Specifically, the peripheral device includes at least one of: radio frequency circuitry, a display screen, a camera assembly, audio circuitry, and a power supply.

[0078] Peripheral device interfaces can be used to connect at least one I / O (Input / Output) related peripheral device to the processor and memory. In some embodiments, the processor, memory, and peripheral device interface are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor, memory, and peripheral device interface can be implemented on separate chips or circuit boards, which is not limited in this embodiment.

[0079] Radio frequency (RF) circuits are used to receive and transmit RF signals, also known as electromagnetic signals. RF circuits communicate with communication networks and other communication devices via electromagnetic signals. RF circuits convert electrical signals into electromagnetic signals for transmission, or convert received electromagnetic signals back into electrical signals. In some embodiments, the RF circuit includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, etc. The RF circuit can communicate with other terminals through at least one wireless communication protocol. These wireless communication protocols include, but are not limited to: the World Wide Web, metropolitan area networks, intranets, various generations of mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and / or WiFi (Wireless Fidelity) networks. In some embodiments, the RF circuit may also include circuitry related to NFC (Near Field Communication), which is not limited in this application.

[0080] The present invention also discloses a computer-readable storage medium storing a computer program adapted for loading and execution by a processor of an engine control method for a hybrid amphibious vehicle disclosed in an embodiment of the present invention.

[0081] The present invention also discloses a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements an engine control method for a hybrid amphibious vehicle disclosed in the embodiments of the present invention.

[0082] The method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor. The software modules can reside in readily available storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0083] Those skilled in the art will recognize that the units and algorithm steps described in conjunction with the embodiments herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0084] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. An engine control method for a hybrid amphibious vehicle, characterized in that, include: Monitor engine control commands; When the engine control command is an engine start command, determine the vehicle's current mode; When the vehicle is in water navigation mode, the engine must not be started; When the vehicle is in land driving mode, obtain the status of the vehicle's intake and exhaust valves. When both the vehicle's intake and exhaust shut-off valves are open, the engine start command is executed. The engine must not be started when the vehicle's intake shut-off valve and / or exhaust shut-off valve are in the closed position.

2. The engine control method for a hybrid amphibious vehicle as described in claim 1, characterized in that, The process of executing the engine start command includes: Control the engine to start and obtain the generator speed at a set time; Determine whether the engine rotation direction is correct based on the generator speed value; When the engine is rotating in the correct direction, control the engine to start and reach the set speed; When the engine rotates in the wrong direction, control the engine to stop starting.

3. The engine control method for a hybrid amphibious vehicle as described in claim 2, characterized in that, The generator speed at the set time is less than the engine ignition speed.

4. The engine control method for a hybrid amphibious vehicle as described in claim 1, characterized in that, After the engine starts, the generator speed and power generation command are obtained; Determine whether the generator speed direction matches the generator command direction; When there is a mismatch, the generator must not be started to generate electricity; When a match is found, the power generation command is executed.

5. The engine control method for a hybrid amphibious vehicle as described in claim 1, characterized in that, When the engine control command is an engine stop ignition command, the generator is controlled to output torque in the opposite direction to the engine rotation until the engine speed is 0.

6. The engine control method for a hybrid amphibious vehicle as described in claim 5, characterized in that, When the engine speed drops to the set speed, the generator is controlled to stop outputting torque.

7. An engine control system for a hybrid amphibious vehicle, characterized in that, include: The command monitoring unit is used to monitor engine control commands; The vehicle mode determination unit is used to determine the vehicle mode when the engine control command is an engine start command. The engine control unit is used to prevent engine starting when the vehicle is in water navigation mode; to obtain the status of the vehicle's intake and exhaust shut-off valves when the vehicle is in land driving mode; to execute the engine start command when both the intake and exhaust shut-off valves are open; and to prevent engine starting when the intake and / or exhaust shut-off valves are closed.

8. An electronic device, characterized in that, The device includes: A processor, adapted to execute computer programs; A computer-readable storage medium storing a computer program, which, when executed by the processor, implements the engine control method for a hybrid amphibious vehicle according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program adapted for loading by a processor and executing the engine control method for a hybrid amphibious vehicle according to any one of claims 1-6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the engine control method for a hybrid amphibious vehicle as described in any one of claims 1-6.

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