Control method and device for engine in vehicle, storage medium and vehicle

Abstract

The invention is suitable for the technical field of vehicle control, and provides a control method and device for an engine in a vehicle, a storage medium and the vehicle. The method comprises the steps that the ignition voltage of the engine in the vehicle is monitored, and the engine is differently controlled according to the size of the ignition voltage; compared with an existing method that the engine is directly started after the starting instruction is received, different control strategies for the engine are set, the used control strategy is determined according to the ignition voltage, and actually, the corresponding control strategy is determined according to the current working condition of the vehicle, so that control over the engine better conforms to the current working condition, and the control efficiency is improved. The intelligence of engine control is improved, and due to the fact that control over the engine better conforms to the current working condition of the vehicle, vehicle faults caused by the engine are naturally reduced.

Description

Technical Field

[0001] The present 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 Art

[0002] After the vehicle is started, the battery provides ignition voltage to the engine, causing the fuel in the engine to burn and provide power for the vehicle.

[0003] At present, due to the lack of intelligence in engine control, no matter what state the vehicle is in, as long as the user's start command is received, the engine will be controlled to ignite and run directly, which often leads to vehicle failures due to unreasonable engine operation. Summary of the invention

[0004] The embodiments of the present application provide a control method, device, storage medium and vehicle for an engine in a vehicle, which can solve the problem of vehicle operation failure caused by unreasonable operation of the engine.

[0005] In a first aspect, an embodiment of the present application provides a method for controlling an engine in a vehicle, comprising:

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

[0007] Determining the current control strategy of the engine according to the magnitude of the ignition voltage, and presetting different ignition voltages to correspond to different engine control strategies;

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

[0009] In a 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 supplies power to the engine after the main relay is closed;

[0010] The method of monitoring the ignition voltage of an engine in a vehicle comprises:

[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 a possible implementation of the first aspect, the control strategy of the engine includes a first strategy and a second strategy, the first strategy is to prohibit starting the engine, and the second strategy is to run the engine at idle speed;

[0013] Determining the current control strategy of the engine according to 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 of the engine; or,

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

[0016] In a possible implementation of the first aspect, determining the current control strategy of the engine according to the magnitude of the ignition voltage includes:

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

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

[0019] In a possible implementation of the first aspect, the control strategy of the engine includes a third strategy, and the third strategy is to allow starting the engine;

[0020] Determining the current control strategy of the engine according to the magnitude of the ignition voltage includes:

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

[0022] In a possible implementation of the first aspect, the control strategy of the engine includes a first strategy and a second strategy, the first strategy is to prohibit starting the engine, and the second strategy is to run the engine at idle speed;

[0023] Determining the current control strategy of the engine according to the magnitude of the ignition voltage includes:

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

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

[0026] Accordingly, the above method further includes:

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

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

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

[0030] In a second aspect, an embodiment of the present application provides a control device for an engine in a vehicle, comprising:

[0031] A voltage monitoring module for monitoring the ignition voltage of the engine in the vehicle;

[0032] A strategy determination module, used to determine the current control strategy of the engine according to the magnitude of the ignition voltage;

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

[0034] In a third aspect, an embodiment of the present application provides a terminal device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for controlling an engine in a vehicle described in any one of the first aspects above is implemented.

[0035] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for controlling an engine in a vehicle described in any one of the first aspects above is implemented.

[0036] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute the method for controlling an engine in a vehicle as described in any one of the first aspects above.

[0037] In a sixth aspect, an embodiment of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the method for controlling an engine in a vehicle described in any one of the first aspects above is implemented.

[0038] The beneficial effects of the first aspect embodiment of the present application compared with the prior art are as follows: the present application first monitors the ignition voltage of the engine in the vehicle, and controls the engine differently according to the size of the ignition voltage; compared with the existing method of directly starting the engine after receiving a start command, the present application sets different control strategies for the engine, and determines the control strategy to be used according to the ignition voltage. In fact, the corresponding control strategy is determined according to the current operating condition of the vehicle, so that the control of the engine is more in line with the current operating condition, and the intelligence of the engine control is improved. Since the control of the engine is more in line with the current operating condition of the vehicle, the vehicle failure caused by unreasonable operation of the engine is naturally reduced.

[0039] It can be understood that the beneficial effects of the second to sixth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 is a flow chart of a method for controlling an engine in a vehicle provided by an embodiment of the present application;

[0042] Figure 2 is a flow chart of a method for determining an engine control strategy provided in an embodiment of the present application;

[0043] Figure 3 is a flow chart of a method for controlling an engine in a vehicle provided by another embodiment of the present application;

[0044] Figure 4 is a schematic diagram of the structure of a control device for an engine in a vehicle provided by an embodiment of the present application;

[0045] Figure 5 It is a structural diagram of a terminal device provided in one embodiment of the present application. DETAILED DESCRIPTION

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

[0047] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0048] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0049] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0050] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0051] When the engine in a vehicle is running, fuel is required to burn, and the combustion of fuel requires the battery to provide the engine with ignition voltage; if the ignition voltage is insufficient, that is, the engine's ignition energy is insufficient, and the fuel cannot be ignited completely, it will cause incomplete combustion of the fuel in the engine. The incompletely burned fuel is discharged into the catalyst along with the combustion exhaust gas, and the incompletely burned fuel continues to burn in the catalyst, causing the catalyst temperature to rise rapidly, resulting in catalyst ablation damage.

[0052] Based on the above reasons, the present application proposes a control method for an engine in a vehicle, which determines the currently required control strategy of the engine by monitoring the ignition voltage of the engine, and controls the operation of the engine according to the determined control strategy of the engine. Specifically, when the ignition voltage of the engine is insufficient, it is prohibited to start the engine or control the engine to run at idle speed; when the ignition voltage of the engine is sufficient, the engine is allowed to run normally. In the present application, the engine needs to determine the operation strategy according to the size of the ignition voltage, so that the operation of the engine is consistent with the current state of the vehicle, reducing the probability of vehicle damage caused by unreasonable operation of the engine.

[0053] The following is a detailed description of the method for controlling the engine in the vehicle according to the embodiment of the present application.

[0054] Figure 1 A schematic flow chart of a method for controlling an engine in a vehicle provided by the present application is shown, referring to Figure 1 , the method is described in detail as follows:

[0055] S101, monitoring 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 further comprises a battery and a main relay, the main relay being connected to the battery and the engine respectively, and the battery supplies power to the engine after the main relay is closed. The voltage value of the main relay is monitored, and the voltage value of the main relay is the ignition voltage of the engine.

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

[0059] S102, determining the current control strategy of the engine according to the magnitude of the ignition voltage, and presetting different ignition voltages to correspond to different engine control strategies.

[0060] In this embodiment, different voltage intervals are preset, and different voltage intervals correspond to different engine control strategies. After determining the ignition voltage, the voltage interval where the ignition voltage is located is searched, and the control strategy corresponding to the voltage interval where the ignition voltage is located is determined as the current control strategy of the engine.

[0061] The control strategies of the engine include a first strategy, a second strategy and a third strategy, wherein the first strategy is to prohibit starting the engine, the second strategy is to allow the engine to run at idle speed, and the third strategy is to allow starting the engine.

[0062] Among them, prohibiting the engine from starting includes prohibiting the engine from injecting fuel and prohibiting the sending of an engine start request.

[0063] S103: Control the operation of the engine according to the determined current control strategy.

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

[0065] If the current control strategy is engine idling, the engine is controlled to run at the lowest speed.

[0066] If the current control strategy is to allow the engine to start, the engine is controlled to run normally according to the throttle depth, etc.

[0067] In the present application, the ignition voltage of the engine in the vehicle is first monitored, and the engine is controlled differently according to the size of the ignition voltage; compared with the existing method of directly starting the engine after receiving a start command, the present application sets different control strategies for the engine, and determines the control strategy to be used according to the ignition voltage. In fact, the corresponding control strategy is determined according to the current operating condition of the vehicle, so that the control of the engine is more in line with the current operating condition, and the intelligence of the engine control is improved. Since the control of the engine is more in line with the current operating condition of the vehicle, the vehicle failure caused by unreasonable operation of the engine is naturally reduced.

[0068] In a possible implementation, the implementation process of 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 of the engine; or if the ignition voltage is less than a preset voltage, the second strategy is determined as the current control strategy of the engine. The first strategy is to prohibit starting the engine, and the second strategy is to run the engine at idle speed.

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

[0071] If the ignition voltage is lower than the preset voltage, it means that the ignition voltage is insufficient. If the engine runs normally, it may cause incomplete combustion of the fuel, causing the catalyst temperature to rise rapidly and then damage the catalyst. Therefore, if the ignition voltage is lower than the preset voltage, the engine cannot be controlled to run normally. The engine can be prohibited from starting 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, the engine will not run, and naturally the catalyst will not be damaged due to incomplete combustion of fuel.

[0073] When the engine is idling, the engine speed is the lowest and the engine fuel injection volume is naturally very small. Even if the ignition voltage is relatively low, relatively small amount of fuel is completely ignited by the ignition voltage, and the fuel can be burned as fully as possible, and the catalyst will not be damaged due to incomplete combustion of the fuel.

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

[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, an accident may occur. Therefore, if the vehicle is in motion, the engine idling operation can be determined as the current control strategy of the engine, and a reminder message can be displayed to remind the user that the vehicle has a fault and to pull over as soon as possible.

[0076] In one embodiment, if the ignition voltage is less than a preset voltage, the engine startup prohibition is determined as the current control strategy of the engine. If the ignition voltage is less than a preset voltage, a timer is started, and after the timer reaches a preset time, the control strategy of the engine startup prohibition is executed, so that the user has time to park the vehicle in a safe area.

[0077] In one embodiment, if the ignition voltage is less than a preset voltage, prohibiting the engine from starting is determined as the current control strategy of the engine, and the nearest repair shop to the vehicle is searched. A driving route is planned according to the location of the repair shop, and an estimated time for the vehicle to travel from the current location to the repair shop is estimated. After the estimated time is obtained, the timing is started, and after the timing reaches the estimated time, the control strategy of prohibiting the engine from starting is executed, so that the user has time to drive the vehicle to the repair shop for repair according to the planned driving 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 idles for the preset time, a control strategy for prohibiting starting the engine is executed so that the user can drive the vehicle to a safe area.

[0079] In addition, for a hybrid vehicle, there are power batteries and motors in the vehicle. If starting the engine is prohibited, the vehicle can still continue to drive by relying on the power battery. Therefore, if the ignition voltage is less than the preset voltage and the vehicle is a hybrid vehicle, the first strategy is determined as the current control strategy of the engine. Of course, in actual use, for a hybrid vehicle, when the ignition voltage is less than the preset voltage, the engine idling operation can also be determined as the current control strategy of the engine.

[0080] For pure oil vehicles, if starting the engine is prohibited, the vehicle will no longer be able to continue driving. If the vehicle is in the middle of the road, it may cause an accident. Therefore, for pure oil 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 a possible implementation, the implementation process of step S103 may include:

[0082] 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. The third strategy is to allow the engine to be started.

[0083] In this embodiment, if the ignition voltage is greater than or equal to the preset voltage, it means that the ignition voltage is normal, and the fuel can be fully burned after the engine is ignited. 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 execute a control strategy of prohibiting the engine from starting or executing the engine idling operation, it can also be determined based on the remaining power of the power battery. If the remaining power is relatively large, it means that the power battery can be used to drive the vehicle normally, and prohibiting the engine from starting can be used as the current control strategy to ensure that the vehicle can run normally with the support of the power battery; if the remaining power is relatively small, it means that the power battery cannot be used to drive the vehicle, and the engine idling operation can be determined as the current control strategy to ensure that the vehicle can continue to drive.

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

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

[0087] S202: If the remaining power is greater than a preset power, determining the first strategy as the current control strategy of the engine.

[0088] In this embodiment, if the remaining power is greater than the preset power, it is determined that the remaining power is sufficient and the vehicle can operate in pure electric mode. Therefore, when the remaining power is greater than the preset power, starting the engine can be prohibited 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, determining the second strategy as the current control strategy of the engine.

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

[0091] like Figure 3 As shown, in a 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, allowing the engine to start is determined as the current control strategy of the engine, and the EMS controller activates the engine injection permission strategy.

[0094] S13, the EMS controller sends a first instruction to the hybrid vehicle controller (Hybrid Control Unit, HCU), where the first instruction is used to instruct the HCU controller to make an engine request to enable the engine to run.

[0095] S14, after receiving the first instruction, the HCU controller determines whether to allow the engine request to run the engine.

[0096] S15, if the ignition voltage is less than the preset voltage, the EMS controller will prohibit starting the engine as the current control strategy of the engine, and the EMS controller activates the engine 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 the engine request 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, and the control module determines to trigger the engine injection prohibition strategy by identifying the fault status bit in the fault information.

[0100] It should be noted that if the ignition voltage is less than the preset voltage, the EMS controller determines that the fault level is the highest level, and the EMS controller sends the fault level to the HCU controller. After receiving the fault level, the HCU controller determines that the engine request cannot be sent, so that the engine cannot run.

[0101] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean 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 the present application.

[0102] Corresponding to the control method of the engine in the vehicle described in the above embodiment, Figure 4 A structural block diagram of an engine control device in a vehicle provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the embodiment of the present 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] Wherein, the voltage monitoring module 310 is used to monitor the ignition voltage of the engine in the vehicle;

[0105] A strategy determination module 320, for determining a current control strategy of the engine according to the magnitude of the ignition voltage;

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

[0107] In a possible implementation, 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 supplies 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 a possible implementation, the control strategy of the engine 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 run at idle speed;

[0111] The policy determination module 320 may 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 of the engine; or,

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

[0114] In a possible implementation, the policy determination module 320 may be specifically configured to:

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

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

[0117] In a possible implementation, the control strategy of the engine includes a third strategy, and the third strategy is to allow the engine to be started;

[0118] The policy determination module 320 may be specifically used for:

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

[0120] In a possible implementation, the policy determination module 320 may be specifically configured to:

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

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

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

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

[0125] In a possible implementation, the policy determination module 320 may be specifically configured to:

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

[0127] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0128] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by 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 embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0129] An embodiment of the present application also provides a vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a method for controlling an engine in the vehicle when executing the computer program.

[0130] The present application also provides a terminal device, see 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, the steps in any of the above-mentioned method embodiments are implemented, for example Figure 1 Steps S101 to S103 in the illustrated embodiment. Alternatively, when the processor 410 executes the computer program, the functions of each module / unit in the above-mentioned device embodiments are implemented, for example Figure 4 The functions of the voltage monitoring module 310 to the control module 330 are shown.

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

[0132] Those skilled in the art will understand that Figure 5 It is only 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 in the figure, or a combination of certain components, or different components, such as input and output devices, network access devices, buses, etc.

[0133] The processor 410 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

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

[0135] The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

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

[0137] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0138] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0139] In the embodiments provided in the present application, it should be understood that the disclosed terminal equipment, devices and methods can be implemented in other ways. For example, the terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0140] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0141] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0142] If the integrated unit is implemented in the form of 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, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by one or more processors, the steps of each of the above-mentioned method embodiments can be implemented.

[0143] If the integrated unit is implemented in the form of 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, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by one or more processors, the steps of each of the above-mentioned method embodiments can be implemented.

[0144] Similarly, as a computer program product, when the computer program product runs on a terminal device, the terminal device can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0145] The computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer readable medium may be appropriately increased or decreased 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 do not include electric carrier signals and telecommunication signals.

[0146] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for controlling an engine in a vehicle, characterized in that: include: Monitor the ignition voltage of the engine in the vehicle; Determining the current control strategy of the engine according to the magnitude of the ignition voltage, and presetting different ignition voltages to correspond to different engine control strategies; The engine operation is controlled according to the determined current control strategy.

2. The method for controlling an engine in a vehicle according to claim 1, characterized in that: The vehicle further comprises a battery and a main relay, wherein the main relay is connected to the battery and the engine respectively, and when the main relay is closed, the battery supplies power to the engine; The method of monitoring the ignition voltage of an engine in a vehicle comprises: The voltage value of the main relay is monitored, and the voltage value of the main relay is the ignition voltage of the engine.

3. The method for controlling an engine in a vehicle according to claim 1, characterized in that: The control strategy of the engine 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 run at idle speed; Determining the current control strategy of the engine according to the magnitude of the ignition voltage includes: If the ignition voltage is less than a preset voltage, determining the first strategy as the current control strategy of the engine; or, If the ignition voltage is less than a preset voltage, the second strategy is determined as the current control strategy of the engine.

4. The method for controlling an engine in a vehicle according to claim 3, characterized in that: Determining the current control strategy of the engine according to the magnitude of the ignition voltage includes: If the ignition voltage is less than a preset voltage and the vehicle is a hybrid vehicle, determining the first strategy as a current control strategy of the engine; If the ignition voltage is less than a preset voltage and the vehicle is a pure oil vehicle, the second strategy is determined as the current control strategy of the engine.

5. The method for controlling an engine in a vehicle according to claim 1, characterized in that: The control strategy of the engine includes a third strategy, and the third strategy is to allow the engine to be started; Determining the current control strategy of the engine according to the magnitude of the ignition voltage includes: If the ignition voltage is greater than or equal to a preset voltage, the third strategy is determined as the current control strategy of the engine.

6. The method for controlling an engine in a vehicle according to claim 1, characterized in that: The control strategy of the engine includes a first strategy and a second strategy, the first strategy is to prohibit starting the engine, and the second strategy is to run the engine at idle speed; Determining the current control strategy of the engine according to the magnitude of the ignition voltage includes: If the ignition voltage is less than a preset voltage, obtaining the remaining power of the power battery in the vehicle; If the remaining power is greater than the preset power, determining the first strategy as the current control strategy of the engine; Accordingly, the method further includes: Control the vehicle to switch to a pure electric mode.

7. The method for controlling an engine in a vehicle according to claim 6, characterized in that: After obtaining the remaining power of the power battery in the vehicle, the method further includes: If the remaining power is less than or equal to the preset power, the second strategy is determined as the current control strategy of the engine.

8. A control device for an engine in a vehicle, characterized in that: include: A voltage monitoring module for monitoring the ignition voltage of the engine in the vehicle; A strategy determination module, used to determine the current control strategy of the engine according to the magnitude of the ignition voltage; A control module is used to control the operation of the engine according to the determined current control strategy.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for controlling an engine in a vehicle according to any one of claims 1 to 7 is implemented.

10. A vehicle comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method for controlling an engine in a vehicle according to any one of claims 1 to 7 is implemented.

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