A method, device, storage medium, and vehicle for controlling an engine in a vehicle.

Abstract

The application is suitable for the technical field of vehicle control, and provides a control method and device of an engine in a vehicle, a storage medium and the vehicle.The method comprises the following steps: monitoring the ignition voltage of the engine in the vehicle, and controlling the engine differently according to the size of the ignition voltage; compared with the prior method of directly starting the engine after receiving a starting instruction, the application sets different control strategies for the engine, and determines the control strategy to be used according to the ignition voltage, that is, determines the corresponding control strategy according to the current working condition of the vehicle, so that the control of the engine is more in line with the current working condition, the intelligence of the engine control is improved, and the vehicle failure caused by the engine is naturally reduced.

Description

Technical Field

[0001] This application belongs to the field of vehicle control technology, and in particular relates to a control method, device, storage medium and vehicle for an engine in a vehicle. Background Technology

[0002] After the vehicle is started, the battery provides ignition voltage to the engine, which then burns the fuel in the engine to provide power to the vehicle.

[0003] Currently, due to insufficient intelligence in engine control, regardless of the vehicle's state, as long as a user's start command is received, the engine will be directly ignited and run. This often leads to vehicle malfunctions due to the unreasonable operation of the engine. Summary of the Invention

[0004] This application provides a method, device, storage medium, and vehicle for controlling an engine in a vehicle, which can solve the problem of vehicle malfunction caused by unreasonable engine operation.

[0005] In a first aspect, embodiments of this application provide a method for controlling an engine in a vehicle, including:

[0006] Monitor the ignition voltage of the engine in the vehicle;

[0007] Based on the magnitude of the ignition voltage, the current control strategy of the engine is determined, and different control strategies for the engine are pre-set for different ignition voltages.

[0008] The engine is controlled to operate according to the determined current control strategy.

[0009] In one possible implementation of the first aspect, the vehicle further includes a battery and a main relay, the main relay being connected to the battery and the engine respectively, and the battery supplying power to the engine when the main relay is closed;

[0010] The monitoring of the engine ignition voltage in the vehicle includes:

[0011] The voltage value of the main relay is monitored, and the voltage value of the main relay is the ignition voltage of the engine.

[0012] In one possible implementation of the first aspect, the engine control strategy includes a first strategy and a second strategy, wherein the first strategy is to prohibit engine starting and the second strategy is to allow the engine to idle.

[0013] Determining the current control strategy of the engine based on the magnitude of the ignition voltage includes:

[0014] If the ignition voltage is less than a preset voltage, the first strategy is determined as the current control strategy for the engine; or,

[0015] If the ignition voltage is less than the preset voltage, the second strategy is determined as the current control strategy of the engine.

[0016] In one possible implementation of the first aspect, determining the current control strategy of the engine based on the magnitude of the ignition voltage includes:

[0017] If the ignition voltage is less than the preset voltage and the vehicle is a hybrid electric vehicle, the first strategy is determined as the current control strategy of the engine.

[0018] If the ignition voltage is less than the preset voltage and the vehicle is a pure gasoline vehicle, the second strategy will be determined as the current control strategy of the engine.

[0019] In one possible implementation of the first aspect, the engine control strategy includes a third strategy, which allows the engine to be started;

[0020] Determining the current control strategy of the engine based on the magnitude of the ignition voltage includes:

[0021] If the ignition voltage is greater than or equal to the preset voltage, the third strategy is determined as the current control strategy of the engine.

[0022] In one possible implementation of the first aspect, the engine control strategy includes a first strategy and a second strategy, wherein the first strategy is to prohibit starting the engine and the second strategy is to allow the engine to idle.

[0023] Determining the current control strategy of the engine based on the magnitude of the ignition voltage includes:

[0024] If the ignition voltage is less than the preset voltage, obtain the remaining power of the power battery in the vehicle;

[0025] If the remaining power is greater than the preset power, then the first strategy is determined as the current control strategy of the engine;

[0026] Correspondingly, the above methods also include:

[0027] Control the vehicle to switch to pure electric mode.

[0028] In one possible implementation of the first aspect, after obtaining the remaining charge of the power battery in the vehicle, the method further includes:

[0029] If the remaining battery power is less than or equal to the preset battery power, then the second strategy is determined as the current control strategy for the engine.

[0030] Secondly, embodiments of this application provide a control device for an engine in a vehicle, comprising:

[0031] A voltage monitoring module is used to monitor the ignition voltage of the engine in a vehicle.

[0032] The strategy determination module is used to determine the current control strategy of the engine based on the magnitude of the ignition voltage.

[0033] The control module is used to control the engine according to the determined current control strategy.

[0034] Thirdly, embodiments of this application provide a terminal device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the engine control method in the vehicle described in any of the first aspects above.

[0035] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the engine control method in a vehicle as described in any of the first aspects above.

[0036] Fifthly, embodiments of this application provide a computer program product that, when run on a terminal device, causes the terminal device to execute the engine control method in a vehicle as described in any of the first aspects above.

[0037] In a sixth aspect, embodiments of this application provide a vehicle, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the engine control method in the vehicle described in any one of the first aspects above.

[0038] The beneficial effects of the first aspect of this application compared with the prior art are as follows: This application first monitors the ignition voltage of the engine in the vehicle and performs different controls on the engine according to the magnitude of the ignition voltage; compared with the existing method of directly starting the engine after receiving a start command, this application sets different control strategies for the engine and determines the control strategy to be used according to the ignition voltage. In fact, it determines the corresponding control strategy according to the current operating condition of the vehicle, making the control of the engine more in line with the current operating condition and improving the intelligence of engine control. Since the control of the engine is more in line with the current operating condition of the vehicle, the vehicle malfunctions caused by unreasonable engine operation are naturally reduced.

[0039] It is understood that the beneficial effects of the second to sixth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic flowchart of a method for controlling an engine in a vehicle according to an embodiment of this application;

[0042] Figure 2 This is a flowchart illustrating a method for determining an engine control strategy according to an embodiment of this application;

[0043] Figure 3 This is a schematic flowchart of a method for controlling an engine in a vehicle according to another embodiment of this application;

[0044] Figure 4 This is a schematic diagram of the structure of a control device for an engine in a vehicle according to an embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Detailed Implementation

[0046] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0047] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0048] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0049] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0051] When a vehicle's engine is running, it needs fuel to burn, and the fuel combustion requires the battery to provide ignition voltage to the engine. If the ignition voltage is insufficient, that is, the engine's ignition energy is insufficient, it will not be able to ignite the fuel completely, resulting in incomplete combustion of the fuel in the engine. The incompletely burned fuel is discharged into the catalytic converter with the combustion exhaust gas. The unburned fuel continues to burn in the catalytic converter, causing the catalytic converter temperature to rise rapidly, resulting in catalytic converter ablation and damage.

[0052] Based on the above reasons, this application proposes a method for controlling an engine in a vehicle. By monitoring the engine's ignition voltage, the required engine control strategy is determined, and the engine operation is controlled according to the determined strategy. Specifically, when the engine's ignition voltage is insufficient, starting the engine is prohibited or the engine is controlled to idle; when the engine's ignition voltage is sufficient, the engine is allowed to operate normally. In this application, the engine's operating strategy is determined according to the ignition voltage level to ensure that the engine's operation conforms to the vehicle's current state, reducing the probability of vehicle damage caused by unreasonable engine operation.

[0053] The following provides a detailed description of the engine control method in a vehicle according to embodiments of this application.

[0054] Figure 1 A schematic flowchart of the engine control method in the vehicle provided in this application is shown, with reference to... Figure 1 The method is described in detail below:

[0055] S101 monitors the ignition voltage of the engine in the vehicle.

[0056] In this embodiment, the ignition voltage can be determined by monitoring the output voltage of the battery, and the output voltage of the battery is determined as the ignition voltage.

[0057] Alternatively, the vehicle may also include a battery and a main relay, with the main relay connected to both the battery and the engine. When the main relay is closed, the battery supplies power to the engine. The voltage value of the main relay is monitored; the voltage value of the main relay is the engine's ignition voltage.

[0058] In this embodiment, the engine management controller (Electronic Motor System, EMS) in the vehicle acquires the ignition voltage at preset time intervals. The preset time intervals can be set as needed, for example, the preset time interval can be set to 1 second or 2 seconds, etc.

[0059] S102, determine the current control strategy of the engine based on the magnitude of the ignition voltage, and pre-set different control strategies for different engines corresponding to different ignition voltages.

[0060] In this embodiment, different voltage ranges are preset, and different voltage ranges correspond to different engine control strategies. After determining the ignition voltage, the voltage range in which the ignition voltage is located is found, and the control strategy corresponding to the voltage range in which the ignition voltage is located is determined as the current control strategy of the engine.

[0061] The engine control strategy includes a first strategy, a second strategy, and a third strategy. The first strategy prohibits engine starting, the second strategy allows the engine to idle, and the third strategy allows engine starting.

[0062] The prohibition of engine starting includes prohibiting engine fuel injection and prohibiting the sending of engine start requests.

[0063] S103, control the engine to operate according to the determined current control strategy.

[0064] In this embodiment, if the current control policy is to prohibit engine starting, then the engine is controlled to be prohibited from starting.

[0065] If the current control strategy is to run the engine at idle speed, then control the engine to run at the lowest possible speed.

[0066] If the current control strategy allows engine start, then the engine is controlled to operate normally according to the throttle position and other parameters.

[0067] In this application, the ignition voltage of the engine in the vehicle is first monitored, and the engine is controlled differently according to the magnitude of the ignition voltage. Compared with the existing method of directly starting the engine after receiving a start command, this application sets different control strategies for the engine and determines the control strategy to be used based on the ignition voltage. In fact, it determines the corresponding control strategy based on the current operating conditions of the vehicle, making the control of the engine more in line with the current operating conditions and improving the intelligence of engine control. Since the control of the engine is more in line with the current operating conditions of the vehicle, the vehicle malfunctions caused by unreasonable engine operation are naturally reduced.

[0068] In one possible implementation, step S103 may include:

[0069] If the ignition voltage is less than a preset voltage, the first strategy is determined as the current control strategy for the engine; or, if the ignition voltage is less than a preset voltage, the second strategy is determined as the current control strategy for the engine. The first strategy prohibits engine starting, and the second strategy is the same as engine idling.

[0070] In this embodiment, the preset voltage can be set as needed.

[0071] If the ignition voltage is lower than the preset voltage, it indicates that the ignition voltage is insufficient. If the engine runs normally, it may cause incomplete combustion of fuel, resulting in a rapid increase in the temperature of the catalytic converter and subsequent damage to the catalytic converter. Therefore, if the ignition voltage is lower than the preset voltage, the engine cannot be controlled to run normally. Starting the engine can be prohibited or the engine can be controlled to idle to reduce the amount of fuel burned in the engine.

[0072] When the engine is prohibited from starting, it will not run, and therefore the catalytic converter will not be damaged due to incomplete combustion of fuel.

[0073] When the engine is idling, the engine speed is at its lowest, and the amount of fuel injected is naturally very small. Even if the ignition voltage is relatively low, a small amount of fuel is completely ignited by the ignition voltage, and the fuel can burn as completely as possible. Incomplete combustion of fuel will not cause damage to the catalytic converter.

[0074] In one embodiment, if the ignition voltage is less than a preset voltage, the vehicle's current speed is detected. If the vehicle is stationary, prohibiting engine starting is determined as the current engine control strategy.

[0075] If the vehicle is in motion, it means that the vehicle may be in the middle of the road. If starting the engine is prohibited, it may cause an accident. Therefore, if the vehicle is in motion, the engine can be set to idle as the current engine control strategy, and a reminder message will be displayed to inform the user that the vehicle is malfunctioning and to pull over to the side of the road as soon as possible.

[0076] In one embodiment, if the ignition voltage is less than a preset voltage, prohibiting engine starting is determined as the current control strategy for the engine. If the ignition voltage is less than the preset voltage, a timer is started, and after the preset time has elapsed, the engine start prohibition control strategy is executed to allow the user time to park the vehicle in a safe area.

[0077] In one embodiment, if the ignition voltage is lower than a preset voltage, preventing engine start is determined as the current control strategy for the engine, and the nearest repair shop is located. A driving route is planned based on the repair shop's location, and the estimated travel time from the current location to the repair shop is estimated. After obtaining the estimated time, a timer is started. Once the estimated time has elapsed, the engine start-prevention control strategy is implemented to allow the user time to drive the vehicle to the repair shop according to the planned route.

[0078] In one embodiment, if the ignition voltage is less than a preset voltage, the engine is first controlled to idle for a preset time. After the engine has idled for the preset time, a control strategy to prevent the engine from starting is executed so that the user can drive the vehicle to a safe area.

[0079] Furthermore, for hybrid vehicles, which contain a power battery and an electric motor, the vehicle can continue to operate using the power battery even if the engine is prohibited from starting. Therefore, if the ignition voltage is less than a preset voltage and the vehicle is a hybrid, the first strategy is determined as the current control strategy for the engine. Of course, in actual use, for hybrid vehicles, when the ignition voltage is less than the preset voltage, engine idling can also be determined as the current control strategy for the engine.

[0080] For pure gasoline vehicles, if starting the engine is prohibited, the vehicle will be unable to continue driving. If the vehicle is in the middle of the road, it may cause an accident. Therefore, for pure gasoline vehicles, if the ignition voltage is less than the preset voltage, the second strategy is determined as the current control strategy of the engine to ensure that the vehicle can continue to drive.

[0081] In one possible implementation, step S103 may include:

[0082] If the ignition voltage is greater than or equal to a preset voltage, the third strategy is determined as the current control strategy for the engine. The third strategy is to allow engine start-up.

[0083] In this embodiment, if the ignition voltage is greater than or equal to the preset voltage, it indicates that the ignition voltage is normal. After the engine is ignited, the fuel can burn completely. Therefore, if the ignition voltage is greater than or equal to the preset voltage, the engine can start normally.

[0084] In one possible implementation, when determining whether to implement a control strategy that prohibits engine starting or allows the engine to idle, the remaining charge of the power battery can be used as the basis for the decision. If the remaining charge is relatively high, it means that the power battery can power the vehicle to drive normally, and the engine starting prohibition strategy can be adopted as the current control strategy to ensure that the vehicle can drive normally with the support of the power battery. If the remaining charge is relatively low, it means that the power battery cannot power the vehicle to drive, and the engine idling strategy can be adopted as the current control strategy to ensure that the vehicle can continue to drive.

[0085] like Figure 2 As shown, specifically, the implementation process of step S103 may include:

[0086] S201, if the ignition voltage is less than the preset voltage, obtain the remaining power of the power battery in the vehicle.

[0087] S202, if the remaining power is greater than the preset power, then the first strategy is determined as the current control strategy of the engine.

[0088] In this embodiment, if the remaining battery power is greater than the preset battery power, it is determined that the remaining battery power is sufficient and the vehicle can operate in pure electric mode. Therefore, when the remaining battery power is greater than the preset battery power, the engine can be prevented from starting and the vehicle can be controlled to switch to pure electric mode.

[0089] S203, if the remaining power is less than or equal to the preset power, then the second strategy is determined as the current control strategy of the engine.

[0090] In this embodiment, if the remaining battery power is less than or equal to the preset battery power, it is determined that the remaining battery power is insufficient and the vehicle cannot operate in pure electric mode. Therefore, when the remaining battery power is less than or equal to the preset battery power, the engine can be controlled to idle to ensure that the vehicle can continue to drive.

[0091] like Figure 3 As shown, in one possible implementation, the above method may further include:

[0092] S11, the EMS controller in the vehicle obtains the voltage value of the main relay in the vehicle to obtain the ignition voltage of the engine.

[0093] S12, if the EMS controller determines that the ignition voltage is greater than or equal to the preset voltage, it will allow the engine to start and determine the current control strategy of the engine. The EMS controller will activate the engine to allow the fuel injection strategy.

[0094] S13, the EMS controller sends a first instruction to the Hybrid Control Unit (HCU), which instructs the HCU controller to request the engine to run.

[0095] S14, after receiving the first instruction, the HCU controller determines that the engine request is allowed to run.

[0096] S15, if the ignition voltage is less than the preset voltage, the EMS controller will prohibit the engine from starting, which is determined as the current control strategy of the engine, and the EMS controller will activate the engine fuel injection prohibition strategy.

[0097] S16, the EMS controller sends a second instruction to the HCU controller.

[0098] S17, after receiving the second instruction, the HCU controller determines to prohibit engine requests so that the engine cannot run.

[0099] Specifically, the diagnostic module in the EMS controller is used to identify the voltage value of the main relay. If the diagnostic module in the EMS controller determines that the ignition voltage is less than the preset voltage, the diagnostic module sends the fault information to the control module in the EMS controller. The control module determines the engine injection prevention strategy by identifying the fault status bit in the fault information.

[0100] It should be noted that if the ignition voltage is lower than the preset voltage, the EMS controller determines the fault level to be the highest level and sends the fault level to the HCU controller. After receiving the fault level, the HCU controller determines that it cannot send an engine request, thus preventing the engine from running.

[0101] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0102] Corresponding to the engine control method in the vehicle described in the above embodiments, Figure 4 This paper shows a structural block diagram of a control device for an engine in a vehicle provided in an embodiment of this application. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0103] Reference Figure 4 The device 300 may include a voltage monitoring module 310, a strategy determination module 320, and a control module 330.

[0104] Among them, the voltage monitoring module 310 is used to monitor the ignition voltage of the engine in the vehicle;

[0105] The strategy determination module 320 is used to determine the current control strategy of the engine based on the magnitude of the ignition voltage.

[0106] The control module 330 is used to control the engine operation according to the determined current control strategy.

[0107] In one possible implementation, the vehicle further includes a battery and a main relay, the main relay being connected to both the battery and the engine, and the battery supplying power to the engine when the main relay is closed.

[0108] The voltage monitoring module 310 can be specifically used for:

[0109] The voltage value of the main relay is monitored, and the voltage value of the main relay is the ignition voltage of the engine.

[0110] In one possible implementation, the engine control strategy includes a first strategy and a second strategy, wherein the first strategy is to prohibit engine starting and the second strategy is to allow the engine to idle.

[0111] The strategy determination module 320 can be specifically used for:

[0112] If the ignition voltage is less than a preset voltage, the first strategy is determined as the current control strategy for the engine; or,

[0113] If the ignition voltage is less than the preset voltage, the second strategy is determined as the current control strategy of the engine.

[0114] In one possible implementation, the strategy determination module 320 can specifically be used for:

[0115] If the ignition voltage is less than the preset voltage and the vehicle is a hybrid electric vehicle, the first strategy is determined as the current control strategy of the engine.

[0116] If the ignition voltage is less than the preset voltage and the vehicle is a pure gasoline vehicle, the second strategy will be determined as the current control strategy of the engine.

[0117] In one possible implementation, the engine control strategy includes a third strategy, which allows the engine to be started;

[0118] The strategy determination module 320 can be specifically used for:

[0119] If the ignition voltage is greater than or equal to the preset voltage, the third strategy is determined as the current control strategy of the engine.

[0120] In one possible implementation, the strategy determination module 320 can specifically be used for:

[0121] If the ignition voltage is less than the preset voltage, obtain the remaining power of the power battery in the vehicle;

[0122] If the remaining power is greater than the preset power, then the first strategy is determined as the current control strategy of the engine;

[0123] Accordingly, the control module 330 can be specifically used for:

[0124] Control the vehicle to switch to pure electric mode.

[0125] In one possible implementation, the strategy determination module 320 can specifically be used for:

[0126] If the remaining battery power is less than or equal to the preset battery power, then the second strategy is determined as the current control strategy for the engine.

[0127] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0128] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0129] This application also provides a vehicle, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement a method for controlling an engine in the vehicle.

[0130] This application also provides a terminal device, see [link to relevant documentation] Figure 5The terminal device 400 may include: at least one processor 410, a memory 420, and a computer program stored in the memory 420 and executable on the at least one processor 410. When the processor 410 executes the computer program, it implements the steps in any of the above method embodiments, for example... Figure 1 Steps S101 to S103 in the illustrated embodiment. Alternatively, when the processor 410 executes the computer program, it implements the functions of each module / unit in the above-described device embodiments, for example... Figure 4 The functions of the voltage monitoring module 310 to the control module 330 are shown.

[0131] For example, a computer program may be divided into one or more modules / units, one or more of which are stored in memory 420 and executed by processor 410 to complete this application. The one or more modules / units may be a series of computer program segments capable of performing a specific function, which are used to describe the execution process of the computer program in terminal device 400.

[0132] Those skilled in the art will understand that Figure 5 This is merely an example of a terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown, or combine certain components, or different components, such as input / output devices, network access devices, buses, etc.

[0133] The processor 410 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0134] The memory 420 can be an internal storage unit of the terminal device or an external storage device, such as a plug-in hard drive, a smart media card (SMC), a secure digital card (SD), or a flash card. The memory 420 is used to store the computer program and other programs and data required by the terminal device. The memory 420 can also be used to temporarily store data that has been output or will be output.

[0135] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0136] The engine control method in a vehicle provided in this application embodiment can be applied to terminal devices such as computers, tablets, laptops, netbooks, and personal digital assistants (PDAs). This application embodiment does not impose any restrictions on the specific type of terminal device.

[0137] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0138] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed 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.

[0139] In the embodiments provided in this application, it should be understood that the disclosed terminal devices, apparatuses, and methods can be implemented in other ways. For example, the terminal device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interfaces, apparatuses, or units, and may be electrical, mechanical, or other forms.

[0140] 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.

[0141] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0142] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by one or more processors, it can implement the steps of the various method embodiments described above.

[0143] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by one or more processors, it can implement the steps of the various method embodiments described above.

[0144] Similarly, as a computer program product, when the computer program product is run on a terminal device, it enables the terminal device to implement the steps in the above-described method embodiments.

[0145] The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drive, portable hard drive, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media may not include electrical carrier signals and telecommunication signals.

[0146] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A control method of an engine in a vehicle, characterized by, The method comprises: monitoring the ignition voltage of the engine in the vehicle; determining the current control strategy of the engine according to the size of the ignition voltage, different ignition voltages being preset to correspond to different control strategies of the engine, the control strategies of the engine including a first strategy and a second strategy, the first strategy being to prohibit starting the engine, and the second strategy being to idle the engine; controlling the engine to operate according to the determined current control strategy of the engine; the step of determining the current control strategy of the engine according to the size of the ignition voltage comprises: if the ignition voltage is less than a preset voltage and the vehicle is a hybrid vehicle, determining the first strategy as the current control strategy of the engine; if the ignition voltage is less than a preset voltage and the vehicle is a pure oil vehicle, determining the second strategy as the current control strategy of the engine.

2. The control method of an engine in a vehicle according to claim 1, characterized by, The vehicle further comprises a battery and a main relay, the main relay being connected to the battery and the engine respectively, the battery supplying power to the engine after the main relay is closed; the step of monitoring the ignition voltage of the engine in the vehicle comprises: monitoring the voltage value of the main relay, the voltage value of the main relay being the ignition voltage of the engine.

3. The control method of an engine in a vehicle according to claim 1, characterized by, The control strategies of the engine include a third strategy, the third strategy being to allow starting the engine; the step of determining the current control strategy of the engine according to the size of the ignition voltage comprises: if the ignition voltage is greater than or equal to a preset voltage, determining the third strategy as the current control strategy of the engine.

4. The control method of an engine in a vehicle according to claim 1, characterized by, The control strategies of the engine include a first strategy and a second strategy, the first strategy being to prohibit starting the engine, and the second strategy being to idle the engine; the step of determining the current control strategy of the engine according to the size of the ignition voltage comprises: if the ignition voltage is less than a preset voltage, obtaining the remaining capacity of the power battery in the vehicle; if the remaining capacity is greater than a preset capacity, determining the first strategy as the current control strategy of the engine; correspondingly, the method further comprises: controlling the vehicle to switch to a pure electric mode.

5. The control method of an engine in a vehicle according to claim 4, characterized by, After obtaining the remaining capacity of the power battery in the vehicle, the method further comprises: if the remaining capacity is less than or equal to the preset capacity, determining the second strategy as the current control strategy of the engine.

6. A control device of an engine in a vehicle, characterized by comprising: The method comprises: a voltage monitoring module configured to monitor the ignition voltage of the engine in the vehicle; a strategy determining module configured to determine the current control strategy of the engine according to the size of the ignition voltage, the control strategies of the engine including a first strategy and a second strategy, the first strategy being to prohibit starting the engine, and the second strategy being to idle the engine; a control module configured to control the engine to operate according to the determined current control strategy of the engine; the strategy determining module is further configured to: if the ignition voltage is less than a preset voltage and the vehicle is a hybrid vehicle, determine the first strategy as the current control strategy of the engine; if the ignition voltage is less than a preset voltage and the vehicle is a pure oil vehicle, determine the second strategy as the current control strategy of the engine.

7. A computer-readable storage medium storing a computer program, wherein the computer program comprises the following steps of: receiving a request for a resource from a client; determining whether the client is authorized to access the resource; and if the client is authorized to access the resource, providing the resource to the client. The computer program, when executed by a processor, implements the control method of an engine in a vehicle according to any one of claims 1 to 5.

8. A vehicle comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor, when executing the computer program, implements the control method of an engine in a vehicle according to any one of claims 1 to 5.

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