Vehicle engine control method, readable storage medium and vehicle

Abstract

The embodiment of the present application discloses a vehicle engine control method, a readable storage medium and a vehicle, wherein the vehicle engine control method comprises: when the vehicle is in a deceleration condition, obtaining the exhaust pressure information of the supercharger; when the exhaust pressure information is greater than or equal to a first threshold, controlling the output end of the engine to be connected to the generator of the vehicle to consume the power of the engine and reduce the exhaust pressure of the supercharger. The vehicle engine control method provided by the embodiment of the present application can prevent the occurrence of surge phenomenon, does not need to set a pressure relief valve, is conducive to simplifying the structure of the vehicle, and reduces the production cost of the vehicle.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of vehicle technology, and more particularly to a method for controlling a vehicle engine, a computer-readable storage medium, and a vehicle. Background Art

[0002] Turbocharging technology is currently the main application measure to improve engine performance. When the turbocharged engine installed in a passenger car is working, the speed of the turbocharger is very high. When the vehicle decelerates, especially when the vehicle decelerates suddenly, the engine throttle needs to be closed quickly, otherwise the engine speed will suddenly increase or the vehicle will be unable to decelerate. When the throttle is closed, the turbocharger will still rotate at high speed due to the inertia of rotation, and continue to compress the fresh air and compress it in the direction of the throttle. However, since the throttle is already closed, the pressure ratio of the supercharger will increase instantly, causing the supercharger to surge, resulting in damage or destruction of the supercharger. Therefore, corresponding devices or measures are needed to avoid excessive pressure and surge.

[0003] In current technology, intake pressure relief valves are commonly used to deal with this working condition to avoid damage to the supercharger. The working principle of the pressure relief valve is to add a conducting pipeline before and after the compressor of the supercharger, and install a pressure relief valve that can be controlled to open and close on the pipeline. When the engine is working normally, the pressure relief valve is closed to ensure that the compressor can smoothly press fresh air into the cylinder. When the throttle of the engine is closed during rapid deceleration, the pressure relief valve is opened to allow the high-pressure air behind the compressor to quickly return to the front of the compressor, reducing the boost pressure to avoid damage. However, this method requires the addition of a pressure relief valve and corresponding connecting pipelines and wiring harnesses on the vehicle, resulting in an increase in the cost of the entire vehicle. In actual use, there are often problems such as abnormal noise when the pressure relief valve is opened and insufficient power caused by the premature opening of the pressure relief valve. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides a method for controlling a vehicle engine.

[0006] A second aspect of the present invention provides a computer-readable storage medium.

[0007] A third aspect of the present invention provides a vehicle.

[0008] In view of this, according to a first aspect of an embodiment of the present application, a method for controlling a vehicle engine is provided, comprising:

[0009] When the vehicle is in a deceleration condition, the exhaust pressure information of the supercharger is obtained;

[0010] When the exhaust pressure information is greater than or equal to a first threshold, the output end of the engine is controlled to be connected to the generator of the vehicle to consume the power of the engine and reduce the exhaust pressure of the supercharger.

[0011] In a feasible implementation manner, the vehicle engine control method further includes:

[0012] The traveling speed information of the vehicle is collected, and when the traveling speed information drops below a second threshold value within a preset period, it is determined that the vehicle is in a deceleration condition.

[0013] In a feasible implementation manner, when the exhaust pressure information is greater than or equal to a first threshold, the step of controlling the output end of the engine to be connected to the generator of the vehicle to consume the power of the engine and reduce the exhaust pressure of the supercharger includes:

[0014] When the exhaust pressure information is greater than a first threshold, obtaining current maximum charging power information of the battery of the vehicle and current power of the engine;

[0015] Based on the current power and the maximum charging power information, the operation mode of the engine and the battery is controlled.

[0016] In a feasible implementation manner, the step of controlling the operation mode of the engine and the battery based on the current power and the maximum charging power information includes:

[0017] When the current power is less than or equal to the maximum charging power information, controlling the output end of the engine to be connected to the generator of the vehicle to charge the battery;

[0018] When the current power is greater than the maximum charging power information, the output end of the engine is controlled to be connected to the generator of the vehicle to charge the battery, and the generator is controlled to consume electrical energy.

[0019] In a feasible implementation manner, the step of controlling the generator to consume electrical energy includes:

[0020] Controlling the output terminal of the engine to be connected to the generator of the vehicle, and controlling the battery to supply power to a heating device on the vehicle; and / or

[0021] Controlling the generator to generate self-heat to convert electrical energy into thermal energy;

[0022] Wherein, the heating device includes at least one of a battery heater, a window heater and a seat heater.

[0023] In a feasible implementation manner, the step of controlling the battery to supply power to a heating device on the vehicle includes:

[0024] Obtaining a difference between the current power and the maximum charging power information, and using the difference as the power to be consumed;

[0025] When the power to be consumed is less than or equal to a third threshold, only power is supplied to a heating device on the vehicle;

[0026] When the power to be consumed is greater than a third threshold, power is supplied to a heating device on the vehicle, and the generator is controlled to generate self-heat.

[0027] In a possible implementation manner, the first threshold is determined based on the exhaust temperature, exhaust pressure and intake pressure of the supercharger.

[0028] In a feasible implementation manner, the vehicle engine control method further includes:

[0029] When the exhaust pressure information is less than the first threshold, the engine is controlled as a power source of the vehicle to drive the vehicle.

[0030] According to a second aspect of an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the vehicle engine control method as described in any of the above technical solutions is implemented.

[0031] According to a third aspect of an embodiment of the present application, a vehicle is provided, comprising:

[0032] Vehicle body;

[0033] A control device, the control device is connected to the vehicle body, the control device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor is used to implement the vehicle engine control method as described in any of the above technical solutions when executing the computer program stored in the memory.

[0034] Compared with the prior art, the present invention includes at least the following beneficial effects: the control method of the vehicle engine provided in the embodiment of the present application obtains the exhaust pressure information of the supercharger when the vehicle is in a deceleration condition. If the exhaust pressure information is greater than a first threshold value, it is possible that the boost pressure is too high and may cause surge. In this case, the control method provided in the embodiment of the present application is used to control the motor connected to the generator of the vehicle, so that the work done by the engine can be used to drive the generator to generate electricity and charge the vehicle's power battery. At the same time, the engine's power generation power is gradually reduced until the boost pressure is reduced to a level where surge does not occur, thereby preventing the occurrence of surge.

[0035] Correspondingly, the vehicle engine control method, computer-readable storage medium and vehicle provided in the embodiments of the present invention also have the above-mentioned technical effects.

[0036] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings.

[0038] In the attached picture:

[0039] Figure 1 A schematic flowchart of a method for controlling a vehicle engine according to an embodiment of the present application;

[0040] Figure 2 A block diagram of a computer-readable storage medium according to an embodiment of the present application;

[0041] Figure 3 A structural block diagram of a vehicle control device according to an embodiment of the present application;

[0042] Figure 4 A schematic structural diagram of a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0044] like Figure 1 As shown, according to a first aspect of an embodiment of the present application, a vehicle engine control method is proposed, comprising:

[0045] Step 101: When the vehicle is in a deceleration condition, obtain exhaust pressure information of the supercharger.

[0046] Step 102: When the exhaust pressure information is greater than or equal to a first threshold, the output end of the engine is controlled to be connected to the generator of the vehicle to consume the power of the engine and reduce the exhaust pressure of the supercharger.

[0047] The control method of the vehicle engine provided in the embodiment of the present application obtains the exhaust pressure information of the supercharger when the vehicle is in a deceleration condition. If the exhaust pressure information is greater than a first threshold value, it is possible that the boost pressure is too high and may cause surge. In this case, the control method provided in the embodiment of the present application is used to control the motor connected to the generator of the vehicle. The work done by the engine can be used to drive the generator to generate electricity and charge the vehicle's power battery. At the same time, the engine's power generation power is gradually reduced until the boost pressure is reduced to a level where surge does not occur, thereby preventing the occurrence of surge.

[0048] The vehicle engine control method provided in the embodiment of the present application takes into account that the fundamental reason for surging caused by excessive pressure is the sudden drop in vehicle speed, which causes the engine throttle to close quickly. In this solution, starting from a hybrid vehicle model equipped with a turbocharged engine, strategy optimization is performed to avoid the sudden closing of the throttle under conditions such as a sudden drop in vehicle speed, thereby achieving pressure relief of the control strategy and avoiding surging caused by excessive boost pressure.

[0049] Considering that the vehicle may include: a turbocharged engine, a P1 engine directly connected to the engine or a P2 generator connected to the engine through a clutch, a power battery, and other related structures; under normal working conditions, the engine drives the generator to generate electricity or the engine directly drives the wheels, and the driving force of the vehicle suddenly decreases under deceleration conditions. At this time, the present invention controls the engine through a control strategy to still maintain the working state before deceleration, but the work done by the engine at this time will drive the generator to generate electricity and charge the power battery of the hybrid vehicle, while gradually reducing the engine's power generation power until the boost pressure is reduced to a level where no surging occurs.

[0050] The control method for a vehicle engine provided by the embodiment of the present application suppresses or eliminates the surging phenomenon, and has at least the following technical effects:

[0051] 1. It can reduce the cost of parts: using software control strategy to replace the pressure relief valve, eliminating the pressure relief valve and its corresponding pipeline, can achieve a material cost of about 100 yuan;

[0052] 2. Improved interface quality: Eliminating the pressure relief valve and its corresponding pipelines can reduce more than 8 hardware interfaces, preventing the risk of leakage and incorrect installation;

[0053] 3. NVH improvement: remove the pressure relief valve, reduce the knocking sound of the pressure relief valve, and improve user experience;

[0054] 4. Reduce weight: This plan can reduce weight by at least 1KG, achieving the weight reduction plan

[0055] 5. Improvement of aesthetics in layout: This solution eliminates the hardware pressure relief valve and its pipeline, which is more conducive to improving the aesthetics of the layout.

[0056] In a feasible implementation, the vehicle engine control method further includes: collecting the vehicle's travel speed information, and determining that the vehicle is in a deceleration condition when the travel speed information drops below a second threshold within a preset period.

[0057] In this technical solution, a specific method for determining the deceleration condition is further provided, and the vehicle's travel speed can be collected in real time. If the travel speed drops by a second threshold within a preset period, it can be said that the vehicle has performed an emergency brake within a certain period of time. In this case, surge is particularly prone to occur. Therefore, this condition is used as a deceleration condition, and the exhaust pressure information is collected.

[0058] It is understandable that the second threshold value may be set by the user, or may be directly set in the vehicle controller during the vehicle's factory process.

[0059] In a feasible implementation manner, when the exhaust pressure information is greater than or equal to a first threshold value, the output end of the engine is controlled to be connected to the generator of the vehicle to consume the power of the engine, and the step of reducing the exhaust pressure of the supercharger includes: when the exhaust pressure information is greater than the first threshold value, obtaining the current maximum charging power information of the battery of the vehicle and the current power of the engine; based on the current power and the maximum charging power information, controlling the operating mode of the engine and the battery.

[0060] In this technical solution, a specific method of controlling the connection between the engine and the generator is further provided, in which the current power of the engine can be obtained, and the current power is the maximum power required to reduce surge. Based on the current power that the engine needs to output and the maximum charging power that can be consumed during the charging process of the vehicle battery, the operation mode of the engine and the battery is controlled, which can accurately consume the peak supply of the engine and suppress the surge phenomenon more effectively.

[0061] In a feasible implementation, based on the current power and the maximum charging power information, the steps of controlling the operating mode of the engine and the battery include: when the current power is less than or equal to the maximum charging power information, controlling the output end of the engine to be connected to the generator of the vehicle to charge the battery; when the current power is greater than the maximum charging power information, controlling the output end of the engine to be connected to the generator of the vehicle to charge the battery, and controlling the generator to consume electrical energy.

[0062] In this technical solution, a mode of controlling the operation of the engine and the battery is further provided. When the current power is less than or equal to the maximum charging power information, it means that the current power required to be consumed by the engine can be consumed by the generator to charge the battery. In this case, the engine can be directly controlled to be connected to the generator. When the current power is greater than the maximum charging power information, it means that the current power of the engine cannot be consumed only by the generator and the battery under the current circumstances. In this case, while controlling the engine to be connected to the generator, it is also necessary to control the battery power generation and generator consumption so that the battery can take over the current power output by the engine.

[0063] In one possible embodiment, the step of controlling the generator to consume electrical energy includes the steps of: controlling the generator to supply power to a heating device on the vehicle; and / or controlling the generator to self-heat to convert electrical energy into thermal energy; wherein the heating device includes at least one of a battery heater, a window heater, and a seat heater.

[0064] In this technical solution, specific steps for the generator to consume electrical energy are further provided. When the current power is less than or equal to the maximum charging power information, the generator can be controlled to supply power to the electric heater on the vehicle to consume the battery's electrical energy. In this case, the maximum charging power of the battery can be increased so that the battery can take on the current power output by the engine.

[0065] In this technical solution, when the current power is less than or equal to the maximum charging power information, the generator can also be controlled to self-heat to convert the electrical energy generated by the generator into heat energy and consume the electrical energy so that the battery can take on the current power output by the engine.

[0066] It is understandable that the vehicle may be equipped with auxiliary heating devices, which are heating devices, including but not limited to battery heaters, window heaters and seat heaters.

[0067] In a feasible implementation, the step of controlling the battery to supply power to a heating device on the vehicle includes: obtaining the difference between the current power and the maximum charging power information, and using the difference as the power to be consumed; when the power to be consumed is less than a third threshold, only supplying power to the heating device on the vehicle; when the power to be consumed is greater than the third threshold, supplying power to the heating device on the vehicle and controlling the generator to self-heat.

[0068] In this technical solution, in the process of controlling the battery to supply power to the battery device on the vehicle, the difference between the current power and the maximum charging power information can be further identified, and the difference is the power to be consumed that the battery cannot consume in the current state; the power to be consumed is further compared with the third threshold value. If the power to be consumed is less than or equal to the third threshold value, in this case, the heating device on the vehicle is given priority to supply power, rather than controlling the self-heating of the generator. This setting ensures that the current power of the engine can be consumed while trying to make the operating temperature of the generator close to balance, so that the utilization rate of the engine kinetic energy is higher, more energy-saving, and the service life of the engine can be increased. When the power to be consumed is greater than the third threshold value, it means that the power to be consumed cannot be consumed only by the heating device on the vehicle. In this case, it is necessary to supply power to the heating device on the vehicle and control the generator to self-heat to ensure the suppression effect of the surge phenomenon.

[0069] In one possible implementation, the first threshold is determined based on the exhaust temperature, exhaust pressure and intake pressure of the supercharger.

[0070] In this technical solution, the method for taking the value of the first threshold is further determined. The first threshold is determined based on the exhaust temperature, exhaust pressure and intake pressure of the supercharger, so that the value of the first threshold can be adapted to different operating conditions of the vehicle, and the surge suppression can be adapted to the driving state of the vehicle, which can further improve the surge suppression effect.

[0071] In a feasible implementation, the vehicle engine control method further includes: when the exhaust pressure information is less than a first threshold, controlling the engine as a power source of the vehicle to drive the vehicle.

[0072] In this technical solution, if the exhaust pressure information is less than the first threshold, it means that the probability of vehicle surge is low. In this case, the engine can be controlled as the power source of the vehicle to drive the vehicle, so as to minimize the change in the engine kinetic energy output mode, improve the safety factor of the vehicle operation, and ensure the smooth operation of the vehicle.

[0073] In some examples, the control method provided by the embodiments of the present application may include the following steps:

[0074] Step 1: Monitor vehicle acceleration. Once the vehicle enters a deceleration condition and the boost pressure reaches the surge threshold, the pressure relief control strategy is activated.

[0075] Step 2: According to the current working conditions of the engine, mainly the engine speed and the boost pressure, determine the current power that the engine needs to generate when entering the pressure relief strategy, that is, ① in the logic diagram;

[0076] Step 3: According to the current working state of the vehicle's power battery, determine the maximum power that the current generator can consume; the main factors that determine the upper limit of the battery charging power are the temperature and power of the power battery. Since the power battery has a certain limit on the allowable charging power under conditions of low or high temperature and high power, it is necessary to determine the maximum allowable charging power, which is ② in the logic diagram;

[0077] Step 4: Compare ① and ②. If ② is greater than or equal to ①, the pressure relief control strategy consumes the engine power by charging the power battery to achieve the purpose of gradually reducing the boost pressure.

[0078] Step 5: If ① is greater than ②, in addition to consuming the engine power by charging the power battery, it is also necessary to consume the engine power by dissipating heat from the generator itself, so as to gradually reduce the boost pressure;

[0079] Step 6: After the boost pressure drops below the surge pressure limit through step 5 or step 6 above, the pressure relief control strategy is completed and exited, returning to the normal engine control logic.

[0080] like Figure 2 As shown, according to the second aspect of an embodiment of the present application, a computer-readable storage medium 201 is proposed, on which a computer program 202 is stored. When the computer program is executed by a processor, a vehicle engine control method as described in any of the above technical solutions is implemented.

[0081] The computer-readable storage medium 201 provided in the embodiment of the present application obtains exhaust pressure information of the supercharger when the vehicle is in a deceleration condition. If the exhaust pressure information is greater than a first threshold value, it is possible that the boost pressure is too high and may cause surge. In this case, the control method provided in the embodiment of the present application is used to control the motor connected to the generator of the vehicle, so that the work done by the engine can be used to drive the generator to generate electricity and charge the vehicle's power battery. At the same time, the engine's power generation power is gradually reduced until the boost pressure is reduced to a level where surge does not occur, thereby preventing the occurrence of surge.

[0082] The computer-readable storage medium 201 provided in the embodiment of the present application takes into account that the fundamental reason for surging due to excessive pressure is the sudden drop in vehicle speed, which causes the engine throttle to close quickly. In this solution, starting from a hybrid vehicle model equipped with a turbocharged engine, strategy optimization is performed to avoid the sudden closing of the throttle under conditions such as a sudden drop in vehicle speed, thereby achieving pressure relief of the control strategy and avoiding surging due to excessive boost pressure.

[0083] The computer-readable storage medium provided in the embodiment of the present application suppresses or eliminates the surge phenomenon, which has at least the following technical effects:

[0084] 1. It can reduce the cost of parts: using software control strategy to replace the pressure relief valve, eliminating the pressure relief valve and its corresponding pipeline, can achieve a material cost of about 100 yuan;

[0085] 2. Improved interface quality: Eliminating the pressure relief valve and its corresponding pipelines can reduce more than 8 hardware interfaces, preventing the risk of leakage and incorrect installation;

[0086] 3. NVH improvement: remove the pressure relief valve, reduce the knocking sound of the pressure relief valve, and improve user experience;

[0087] 4. Reduce weight: This plan can reduce weight by at least 1KG, achieving the weight reduction plan

[0088] 5. Improvement of aesthetics in layout: This solution eliminates the hardware pressure relief valve and its pipeline, which is more conducive to improving the aesthetics of the layout.

[0089] like Figure 3 As shown, according to the third aspect of an embodiment of the present application, a vehicle is proposed, comprising: a vehicle body; a control device 310, the control device is connected to the vehicle body, the control device comprises: a memory 311, a processor 312, and a computer program stored in the memory 311 and executable on the processor 312, the processor 312 is used to implement a vehicle engine control method such as any of the above-mentioned technical solutions when executing the computer program stored in the memory 311.

[0090] The vehicle provided in the embodiment of the present application executes a computer program through the control device 310 to obtain the exhaust pressure information of the supercharger when the vehicle is in a deceleration condition. If the exhaust pressure information is greater than the first threshold, the boost pressure may be too high and may cause surge. In this case, the control method provided in the embodiment of the present application is used to control the motor connected to the generator of the vehicle. The work done by the engine can be used to drive the generator to generate electricity and charge the vehicle's power battery. At the same time, the engine's power generation power is gradually reduced until the boost pressure is reduced to a level where surge does not occur, thereby preventing the occurrence of surge.

[0091] The vehicle provided in the embodiment of the present application takes into account that the fundamental reason for surging caused by excessive pressure is the sudden drop in vehicle speed, which causes the engine throttle to close quickly. In this solution, starting from a hybrid vehicle model equipped with a turbocharged engine, strategy optimization is performed to avoid the sudden closing of the throttle under conditions such as a sudden drop in vehicle speed, thereby achieving pressure relief with a control strategy and avoiding surging caused by excessive boost pressure.

[0092] The vehicle provided by the embodiment of the present application suppresses or eliminates the surging phenomenon, and has at least the following technical effects:

[0093] 1. It can reduce the cost of parts: using software control strategy to replace the pressure relief valve, eliminating the pressure relief valve and its corresponding pipeline, can achieve a material cost of about 100 yuan;

[0094] 2. Improved interface quality: Eliminating the pressure relief valve and its corresponding pipelines can reduce more than 8 hardware interfaces, preventing the risk of leakage and incorrect installation;

[0095] 3. NVH improvement: remove the pressure relief valve, reduce the knocking sound of the pressure relief valve, and improve user experience;

[0096] 4. Weight reduction: This plan reduces weight by at least 1KG, achieving the weight reduction plan;

[0097] 5. Improvement of aesthetics in layout: This solution eliminates the hardware pressure relief valve and its pipeline, which is more conducive to improving the aesthetics of the layout.

[0098] It can be understood that the vehicle provided in the embodiment of the present application may include a turbocharged engine, a P1 engine directly connected to the engine or a P2 generator connected to the engine through a clutch, a power battery, and other related structures; under normal working conditions, the engine drives the generator to generate electricity or the engine directly drives the wheels. Under deceleration conditions, the driving force of the vehicle suddenly decreases. At this time, the present invention controls the engine through a control strategy to maintain the working state before deceleration, but the work done by the engine at this time will drive the generator to generate electricity and charge the power battery of the hybrid vehicle, while gradually reducing the engine's power generation power until the boost pressure is reduced to a level where no surging occurs.

[0099] like Figure 4 As shown, in some examples, the vehicle may also include an air filter 320, an intercooler 330, a throttle 340 and a pressure sensor 350, the air filter 320 is connected to the intake end of the turbocharger 370, the output end of the turbocharger 370 is connected to the engine 360, the throttle 340 is arranged between the turbocharger and the engine 360, the intercooler 330 is arranged between the turbocharger 370 and the throttle 340, the pressure sensor 350 is arranged between the intercooler 330 and the throttle 340, and the vehicle provided in the embodiment of the present application does not need to be provided with a pressure relief valve.

[0100] In some examples, the control device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0101] In an exemplary embodiment, the control device may further include an input / output interface and a display device, wherein each functional unit may communicate with each other via a bus. The memory stores a computer program, and the processor is used to execute the program stored in the memory and execute the method in the above embodiment.

[0102] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical device of the method, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0103] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or by hardware.

[0104] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0105] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0106] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for controlling a vehicle engine, characterized in that: include: When the vehicle is in a deceleration condition, obtaining the exhaust pressure information of the supercharger; When the exhaust pressure information is greater than or equal to a first threshold, controlling the output end of the engine to be connected to the generator of the vehicle to consume the power of the engine and reduce the exhaust pressure of the supercharger; The first threshold is determined based on the exhaust temperature, exhaust pressure and intake pressure of the supercharger; When the exhaust pressure information is less than the first threshold, the engine is controlled as a power source of the vehicle to drive the vehicle.

2. The vehicle engine control method according to claim 1, characterized in that: Also includes: The traveling speed information of the vehicle is collected, and when the traveling speed information drops below a second threshold value within a preset period, it is determined that the vehicle is in a deceleration condition.

3. The vehicle engine control method according to claim 1, characterized in that: When the exhaust pressure information is greater than or equal to the first threshold, the step of controlling the output end of the engine to be connected to the generator of the vehicle to consume the power of the engine and reduce the exhaust pressure of the supercharger includes: When the exhaust pressure information is greater than a first threshold, obtaining current maximum charging power information of the battery of the vehicle and current power of the engine; Based on the current power and the maximum charging power information, the operation mode of the engine and the battery is controlled.

4. The vehicle engine control method according to claim 3, characterized in that: The step of controlling the operation mode of the engine and the battery based on the current power and the maximum charging power information includes: When the current power is less than or equal to the maximum charging power information, controlling the output end of the engine to be connected to the generator of the vehicle to charge the battery; When the current power is greater than the maximum charging power information, the output end of the engine is controlled to be connected to the generator of the vehicle to charge the battery, and the generator is controlled to consume electrical energy.

5. The vehicle engine control method according to claim 3, characterized in that: The step of controlling the generator to consume electrical energy comprises: controlling the generator to supply power to a heating device on the vehicle; and / or Controlling the generator to generate self-heat to convert electrical energy into thermal energy; Wherein, the heating device includes at least one of a battery heater, a window heater and a seat heater.

6. The vehicle engine control method according to claim 5, characterized in that: The step of controlling the battery to supply power to the heating device on the vehicle comprises: Obtaining a difference between the current power and the maximum charging power information, and using the difference as the power to be consumed; When the power to be consumed is less than or equal to a third threshold, only supplying power to the heating device on the vehicle; When the power to be consumed is greater than a third threshold, power is supplied to a heating device on the vehicle, and the generator is controlled to generate self-heat.

7. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the control method of the vehicle engine according to any one of claims 1 to 6 is implemented.

8. A vehicle, characterized in that: include: Vehicle body; A control device, the control device is connected to the vehicle body, the control device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor is used to implement the vehicle engine control method as described in any one of claims 1 to 6 when executing the computer program stored in the memory.

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