CN115257687A

CN115257687A - Control method of vehicle engine, readable storage medium and vehicle

Info

Publication number: CN115257687A
Application number: CN202210749086.2A
Authority: CN
Inventors: 闫阳; 魏爽; 张松; 王春鑫
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-01
Also published as: WO2024001691A1

Abstract

The embodiment of the application discloses a control method of a vehicle engine, a readable storage medium and a vehicle, wherein the control method of the vehicle engine comprises the following steps: acquiring exhaust pressure information of a supercharger under the condition that a vehicle is in a deceleration working condition; and under the condition that the exhaust pressure information is greater than or equal to the first threshold value, controlling the output end of the engine to be connected with a generator of the vehicle so as to consume the power of the engine and reduce the exhaust pressure of the supercharger. The control method of the vehicle engine can prevent the surge phenomenon, does not need to be provided with the pressure relief valve, is beneficial to simplifying the structure of the vehicle and reduces the production cost of the vehicle.

Description

Control method of vehicle engine, readable storage medium and vehicle

Technical Field

The embodiment of the application relates to the technical field of vehicles, in particular to a control method of a vehicle engine, a computer readable storage medium and a vehicle.

Background

The turbocharging technology is a main application measure for improving the performance of the engine at present, when a turbocharged engine assembled by a passenger vehicle works, the rotating speed of the turbocharger is very high, when the vehicle decelerates, particularly when the vehicle decelerates suddenly, a throttle valve of the engine needs to be closed quickly, otherwise, the rotating speed of the engine is increased suddenly or the vehicle cannot decelerate; when the throttle valve is closed, the turbocharger still rotates at a high speed due to the rotating inertia, and continuously compresses fresh air in the direction of the throttle valve, but the pressure ratio of the turbocharger is instantly increased due to the fact that the throttle valve is closed, the turbocharger surges, and the turbocharger is damaged or destroyed, so that a corresponding device or measure is needed to avoid overhigh pressure and surge.

In the prior art, the air inlet relief valve is generally applied to cope with the working condition, so that the supercharger is prevented from being damaged; the working principle of the pressure relief valve is that a communicated pipeline is added in front of and behind a compressor of the supercharger, the pressure relief valve capable of controlling opening and closing is installed on the pipeline, and the pressure relief valve is closed when the engine works normally, so that the compressor can smoothly press fresh air into the cylinder; when the throttle valve of the rapid deceleration engine is closed, the pressure release valve is opened, so that high-pressure air behind the air compressor quickly returns to the front of the air compressor, and the supercharging pressure is reduced to avoid damage. In the mode, a pressure release valve, a connection pipeline and a wire harness for response need to be added on the vehicle, so that the cost of the whole vehicle is increased, and the problems that abnormal sound is generated when the pressure release valve is opened, the pressure release valve is opened in advance, power is insufficient and the like often exist in the actual use process.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention provides a control method of a vehicle engine.

A second aspect of the invention provides a computer-readable storage medium.

A third aspect of the invention provides a vehicle.

In view of this, a control method of a vehicle engine according to a first aspect of an embodiment of the present application is proposed, including:

acquiring exhaust pressure information of a supercharger under the condition that a vehicle is in a deceleration working condition;

and under the condition that the exhaust pressure information is greater than or equal to a first threshold value, controlling the output end of the engine to be connected with a generator of the vehicle so as to consume the power of the engine and reduce the exhaust pressure of the supercharger.

In one possible embodiment, the control method of a vehicle engine further includes:

collecting the traveling speed information of the vehicle, and judging that the vehicle is in a deceleration working condition when the traveling speed information drops to a second threshold value in a preset period.

In one possible embodiment, the step of controlling an output of an engine to be connected to a generator of the vehicle to consume power of the engine in the case where the exhaust pressure information is greater than or equal to a first threshold value, and the step of reducing the exhaust pressure of the supercharger includes:

acquiring current maximum charging power information of a battery of the vehicle and current power of the engine when the exhaust pressure information is greater than a first threshold;

controlling an operating mode of the engine and the battery based on the current power and the maximum charging power information.

In one possible embodiment, 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:

under the condition that the current power is smaller than or equal to the maximum charging power information, controlling the output end of an engine to be connected with a generator of the vehicle and charging a battery;

and under the condition that the current power is greater than the maximum charging power information, controlling the output end of the engine to be connected with a generator of the vehicle, charging a battery and controlling the generator to consume electric energy.

In one possible embodiment, the step of controlling the generator to consume the electric energy includes:

controlling the output end of the engine to be connected with a generator of the vehicle and controlling the battery to supply power to a heating device on the vehicle; and/or

Controlling the generator to perform self-heating so as to convert electric energy into heat energy;

wherein the heating means comprises at least one of a battery heater, a window heater and a seat heater.

In one possible embodiment, the step of controlling the battery to supply power to a heating device on the vehicle includes:

acquiring a difference value between the current power and the maximum charging power information, and taking the difference value as power to be consumed;

in the case where the power to be consumed is less than or equal to a third threshold, only the heating means on the vehicle are powered;

and in the case that the power to be consumed is larger than a third threshold value, supplying power to a heating device on the vehicle and controlling the generator to perform self-heating.

In one possible embodiment, the first threshold is determined based on an exhaust temperature, an exhaust pressure, and an intake pressure of the supercharger.

and controlling the engine to serve as a power source of the vehicle to drive the vehicle to run when the exhaust pressure information is smaller than the first threshold value.

According to a second aspect of an embodiment of the present application, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a control method of a vehicle engine as in any one of the above-described aspects.

According to a third aspect of embodiments of the present application, there is provided a vehicle including:

a vehicle body;

a control device connected to the vehicle body, the control device including: a memory, a processor and a computer program stored in the memory and operable on the processor, the processor being configured to implement the control method of the vehicle engine according to any one of the preceding claims when executing the computer program stored in the memory.

Compared with the prior art, the invention at least comprises the following beneficial effects: according to the control method of the vehicle engine, exhaust pressure information of the supercharger is obtained when the vehicle is in a deceleration working condition, if the exhaust pressure information is larger than a first threshold value, the situation that the supercharging pressure is too high and the main surge phenomenon is possibly caused is possible, under the situation, the motor is controlled to be connected with the generator of the vehicle through the control method provided by the embodiment of the application, the function of the engine can be used for driving the generator to generate electricity to charge the power battery of the vehicle, meanwhile, the power generation power of the engine is gradually reduced until the supercharging pressure is reduced to the level where the surge phenomenon is not caused, and the surge phenomenon can be prevented from occurring.

Accordingly, the control method of the vehicle engine, the computer readable storage medium and the vehicle provided by the embodiment of the invention also have the technical effects.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings.

In the drawings:

FIG. 1 is a flowchart illustrating exemplary steps of a method for controlling an engine of a vehicle according to one embodiment provided herein;

FIG. 2 is a block diagram of a computer-readable storage medium according to an embodiment provided herein;

fig. 3 is a block diagram of a control device of a vehicle according to an embodiment of the present disclosure;

FIG. 4 is a schematic block diagram of a vehicle according to an embodiment provided herein.

Detailed Description

In order to better understand the technical solutions described above, the technical solutions of the embodiments of the present application are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features of the embodiments and the embodiments of the present application are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and the embodiments of the present application may be combined with each other without conflict.

As shown in fig. 1, according to a first aspect of an embodiment of the present application, there is provided a control method of a vehicle engine, including:

step 101: and acquiring the exhaust pressure information of the supercharger under the condition that the vehicle is in a deceleration working condition.

Step 102: and under the condition that the exhaust pressure information is greater than or equal to the first threshold value, controlling the output end of the engine to be connected with a generator of the vehicle so as to consume the power of the engine and reduce the exhaust pressure of the supercharger.

According to the control method of the vehicle engine, exhaust pressure information of the supercharger is obtained when the vehicle is in a deceleration working condition, if the exhaust pressure information is larger than a first threshold value, the situation that the supercharging pressure is too high and the main surge phenomenon possibly occurs is possible, under the situation, the motor is controlled to be connected with the generator of the vehicle through the control method provided by the embodiment of the application, the function of the engine can be used for driving the generator to generate electricity to charge the power battery of the vehicle, meanwhile, the generating power of the engine is gradually reduced until the supercharging pressure is reduced to the level where the surge does not occur, and the surge phenomenon can be prevented from occurring.

The control method of the vehicle engine provided by the embodiment of the application considers that the root cause of surging caused by overhigh pressure is that the vehicle speed of the vehicle is suddenly reduced, so that the engine throttle is quickly closed to cause the surging.

It is contemplated 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 the normal working state, the engine drives the generator to generate electricity or the engine directly drives the wheels, and the driving force of the vehicle is suddenly reduced under the deceleration working condition, at the moment, the engine is controlled by the control strategy to still maintain the working state before deceleration, but the work done by the engine drives the generator to generate electricity to charge a power battery of a hybrid vehicle type, and simultaneously, the power generation power of the engine is gradually reduced until the supercharging pressure is reduced to the level of no surge.

The control method of the vehicle engine provided by the embodiment of the application can be used for inhibiting or eliminating the surge phenomenon, and at least has the following technical effects:

1. the cost of parts can be reduced: the software control strategy is used for replacing the pressure release valve, the pressure release valve and the corresponding pipeline thereof are eliminated, and the material cost of about 100 yuan can be realized;

2. the interface quality is improved: the pressure release valves and corresponding pipelines thereof are eliminated, more than 8 hardware interfaces can be reduced, and the risks of liquid leakage and wrong installation are prevented;

3. NVH lifting: the pressure release valve is cancelled, knocking sound of the pressure release valve is reduced, and user experience is improved;

4. and (3) reducing weight: this scheme subtracts heavy 1KG at least, realizes subtracting heavy scheme

5. The arrangement aesthetics is improved: this scheme cancellation on hardware relief valve and pipeline more are favorable to arranging beautifully to promote.

In one possible embodiment, the control method of a vehicle engine further includes: and acquiring the traveling speed information of the vehicle, and judging that the vehicle is in a deceleration working condition when the traveling speed information is reduced by a second threshold value in a preset period.

In the technical scheme, a specific mode for determining the deceleration working condition is further provided, the traveling speed of the vehicle can be acquired in real time, and when the traveling speed is reduced by the second threshold value in the preset period, the vehicle can be indicated to be braked suddenly within a certain time, and the surge phenomenon is particularly easy to occur under the condition, so that the working condition is taken as the deceleration working condition, and the exhaust pressure information is acquired.

It is understood that the second threshold may be set by a user, or may be set directly within a controller of the vehicle during shipment.

In one possible embodiment, in the case where the exhaust pressure information is greater than or equal to the first threshold, controlling an output of the engine to be connected to a generator of the vehicle to consume power of the engine, and the step of reducing the exhaust pressure of the supercharger includes: acquiring current maximum charging power information of a battery of the vehicle and current power of an engine under the condition that the exhaust pressure information is greater than a first threshold; and controlling the operation mode of the engine and the battery based on the current power and the maximum charging power information.

In this solution, a specific way of controlling the connection of the engine to the generator is further provided, in which the current power of the engine, i.e. the maximum power that needs to be consumed in order to reduce the surge, can be obtained. And then based on the current power required to be output by the engine and the maximum charging power information which can be consumed in the charging process of the vehicle battery, the operation mode of the engine and the battery is controlled, the peak supply of the engine can be accurately consumed, and the surge phenomenon can be inhibited more effectively.

In one possible embodiment, 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: under the condition that the current power is less than or equal to the maximum charging power information, controlling the output end of the engine to be connected with a generator of the vehicle and charging the battery; and under the condition that the current power is greater than the maximum charging power information, controlling the output end of the engine to be connected with a generator of the vehicle, charging the battery and controlling the generator to consume electric energy.

In the technical scheme, the method further provides a method for controlling the operation mode of the engine and the battery, and when the current power is less than or equal to the maximum charging power information, the current power required to be consumed by the engine can be consumed by the power consumed by the generator for charging the battery, and the engine can be directly controlled to be connected with the generator under the condition; and when the current power is greater than the maximum charging power information, the current power of the engine cannot be consumed only by the generator and the battery under the current condition is described.

In one possible embodiment, the step of controlling the generator to consume electric energy comprises the steps of: controlling a generator to supply power to a heating device on the vehicle; and/or controlling the generator to perform self-heating so as to convert the electric energy into heat energy; wherein the heating device comprises at least one of a battery heater, a window heater and a seat heater.

In the technical scheme, a specific step that the generator consumes the electric energy is further provided, when the current power is less than or equal to the maximum charging power information, the generator can be controlled to supply the electric heater on the vehicle to consume the electric energy of the battery, and under the condition, the maximum charging power of the battery can be improved, so that the battery can bear the current power output by the engine.

In the technical scheme, when the current power is less than or equal to the maximum charging power information, the generator can be controlled to perform self-heating so as to convert the electric energy generated by the generator into heat energy and consume the electric energy, so that the battery can bear the current power output by the engine.

It will be appreciated that the vehicle may be provided with auxiliary heating means, i.e. heating means, including but not limited to battery heaters, window heaters and seat heaters.

In one possible embodiment, the step of controlling the battery to supply power to the heating means on the vehicle comprises: acquiring a difference value between the current power and the maximum charging power information, and taking the difference value as power to be consumed; in the case where the power to be consumed is less than the third threshold, supplying power only to the heating means on the vehicle; and in the case that the power to be consumed is larger than a third threshold value, supplying power to a heating device on the vehicle, and controlling the generator to perform self-heating.

In the technical scheme, in the process of controlling the battery to supply power to the battery appliance on the vehicle, a difference value between the current power and the maximum charging power information can be further identified, wherein the difference value is the power to be consumed, which cannot be consumed by the battery in the current state; and comparing the power to be consumed with a third threshold, if the power to be consumed is smaller than or equal to the third threshold, preferentially supplying power to a heating device on the vehicle instead of controlling the generator to generate heat, so that the current power of the engine can be consumed, and meanwhile, the working temperature of the generator approaches to balance as much as possible, so that the utilization rate of the engine power is higher, the energy is saved more, and the service life of the engine can be prolonged. And when the power to be consumed is larger than the third threshold, the power to be consumed cannot be consumed only through the heating device on the vehicle, in this case, power needs to be supplied to the heating device on the vehicle, and the generator is controlled to perform self-heating so as to guarantee the suppression effect on the surge phenomenon.

In the technical scheme, a value mode of the first threshold is further determined, and the first threshold is determined based on the exhaust temperature, the exhaust pressure and the intake pressure of the supercharger, so that the value of the first threshold can be adapted to different working conditions of the vehicle, surge inhibition can be adapted to the running state of the vehicle, and the surge inhibition effect can be further improved.

In one possible embodiment, the control method of a vehicle engine further includes: and controlling the engine as a power source of the vehicle to drive the vehicle to run under the condition that the exhaust pressure information is less than the first threshold value.

In the technical scheme, if the exhaust pressure information is smaller than the first threshold value, the probability of the vehicle surging phenomenon is low, and in this case, the engine can be controlled to serve as a power source of the vehicle to drive the vehicle to run, so that the change of a kinetic energy output mode of the engine is reduced as much as possible, the safety coefficient of vehicle running is improved, and the smooth running of the vehicle is guaranteed.

In some examples, the control method provided by the embodiment of the present application may include the following steps:

the method comprises the following steps: monitoring the acceleration of the vehicle, and activating a pressure relief control strategy once the vehicle enters a deceleration working condition and the boost pressure reaches a surge threshold value;

step two: determining the current power which needs to be sent out by the engine entering a pressure relief strategy at present according to the current working condition of the engine, mainly the engine speed and the supercharging pressure, namely (1) in a logic diagram;

step three: determining the maximum power which can be consumed by the current generator for generating power according to the working state of the current vehicle power battery; the main factors for determining the upper limit of the charging power of the battery are the temperature and the electric quantity of the power battery, and the allowable charging power of the power battery is limited to a certain extent under the working conditions of low temperature or high temperature and high electric quantity, so that the maximum allowable charging power needs to be determined, namely (2) in a logic diagram;

step four: comparing (1) and (2), if (2) is more than or equal to (1), the pressure relief control strategy consumes the power of the engine in a manner of charging the power battery, so as to achieve the purpose of gradually reducing the boost pressure

Step five: if (1) is larger than (2), the power of the engine is consumed by charging the power battery, and the power of the engine is also consumed in a mode of self heat release of the generator, so that the aim of gradually reducing the supercharging pressure is fulfilled;

step six: through the fifth step or the sixth step, after the boost pressure is reduced to be lower than the surge pressure limit value, the pressure relief control strategy is completed and quitted, and the normal engine control logic is returned.

As shown in fig. 2, according to a second aspect of the embodiment of the present application, a computer-readable storage medium 201 is provided, on which a computer program 202 is stored, which when executed by a processor implements the control method of the vehicle engine according to any one of the above-mentioned technical solutions.

The computer-readable storage medium 201 provided by the embodiment of the present application obtains the exhaust pressure information of the supercharger when the vehicle is in a deceleration condition, and if the exhaust pressure information is greater than a first threshold, the occurrence of a main surge phenomenon that the supercharging pressure is too high and may possibly occur may occur.

The computer-readable storage medium 201 provided by the embodiment of the application considers that the root cause of surging caused by overhigh pressure is sudden reduction of the vehicle speed, which causes rapid closing of the throttle valve of the engine.

The computer-readable storage medium provided by the embodiment of the application can be used for inhibiting or eliminating the surge phenomenon, and at least has the following technical effects:

3. NVH lifting: the pressure relief valve is cancelled, knocking sound of the pressure relief valve is reduced, and user experience is improved;

4. the weight is reduced: this scheme subtracts heavy 1KG at least, realizes subtracting heavy scheme

5. The arrangement is beautiful and improved: this scheme cancellation on hardware relief valve and pipeline more are favorable to arranging beautifully to promote.

As shown in fig. 3, a third aspect according to an embodiment of the present application proposes a vehicle including: a vehicle body; a control device 310 connected to the vehicle body, the control device including: a memory 311, a processor 312 and a computer program stored in the memory 311 and operable on the processor 312, wherein the processor 312 is used for implementing the control method of the vehicle engine according to any one of the above technical solutions when the computer program stored in the memory 311 is executed.

The vehicle provided by the embodiment of the application realizes that the exhaust pressure information of the supercharger is obtained by executing the computer program through the control device 310 when the vehicle is in a deceleration working condition, if the exhaust pressure information is greater than the first threshold value, the situation that the supercharging pressure is too high and the main surge phenomenon is possibly generated can occur, and under the situation, the control method provided by the embodiment of the application controls the motor to be connected with the generator of the vehicle, so that the engine can be used for driving the generator to generate electricity to charge the power battery of the vehicle, and meanwhile, the power generation power of the engine is gradually reduced until the supercharging pressure is reduced to the level of no surge, and the surge phenomenon can be prevented from occurring.

The vehicle that this application embodiment provided, the root cause of considering that the high surge that causes of pressure appears is the speed of a motor vehicle descends suddenly, leads to the engine air throttle to close suddenly and causes, starts from the mixed-action automobile model that carries on turbo supercharged engine in this scheme, carries out the strategy optimization, avoids the operating mode that the air throttle closed suddenly under operating modes such as vehicle speed descends suddenly, realizes the control strategy pressure release, avoids the surging phenomenon to appear in the high boost pressure.

The vehicle provided by the embodiment of the application inhibits or eliminates the surge phenomenon, and at least has the following technical effects:

1. the cost of parts can be reduced: the software control strategy is used for replacing the pressure release valve, the pressure release valve and the corresponding pipeline are omitted, and the material cost of about 100 yuan can be realized;

2. the interface quality is improved: the pressure relief valves and corresponding pipelines are eliminated, more than 8 hardware interfaces can be reduced, and the risks of liquid leakage and wrong installation are prevented;

4. the weight is reduced: according to the scheme, at least 1KG of weight is reduced, and a weight reduction scheme is realized;

It can be understood that the vehicle provided by 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 the normal working state, the engine drives the generator to generate electricity or the engine directly drives the wheels, and the driving force of the vehicle is suddenly reduced under the deceleration working condition, at the moment, the engine is controlled by the control strategy to still maintain the working state before deceleration, but the work done by the engine drives the generator to generate electricity to charge a power battery of a hybrid vehicle type, and simultaneously, the power generation power of the engine is gradually reduced until the supercharging pressure is reduced to the level of no surge.

As shown in fig. 4, in some examples, the vehicle may further include an air filter 320, an intercooler 330, a throttle valve 340, and a pressure sensor 350, wherein the air filter 320 is communicated with an intake end of a turbocharger 370, an output end of the turbocharger 370 is connected to the engine 360, the throttle valve 340 is disposed between the turbocharger and the engine 360, the intercooler 330 is disposed between the turbocharger 370 and the throttle valve 340, and the pressure sensor 350 is disposed between the intercooler 330 and the throttle valve 340.

In some examples, the control device may also include a user interface, a network interface, a camera, radio Frequency (RF) circuitry, sensors, audio circuitry, a WI-FI module, and so forth. The user interface may include a Display screen (Display), an input unit such as a keypad (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 (e.g., WI-FI interface), etc.

In an exemplary embodiment, the control apparatus may further include an input/output interface and a display device, wherein the respective functional units may communicate with each other through a bus. The memory stores computer programs, and the processor is used for executing the programs stored in the memory and executing the method in the embodiment.

The storage medium may further include an operating system and a network communication module. The operating system is a program that manages the physical device hardware and software resources of the above-described method, supporting the execution of information processing programs and other software and/or programs. The network communication module is used for realizing communication among components in the storage medium and communication with other hardware and software in the information processing entity device.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus an essential general hardware platform, and can also be implemented by means of hardware.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method of a vehicle engine, characterized by comprising:

2. The control method of a vehicle engine according to claim 1, characterized by further comprising:

collecting the traveling speed information of the vehicle, and when the traveling speed information drops to a second threshold value in a preset period, judging that the vehicle is in a deceleration working condition.

3. The control method of the vehicle engine according to claim 1, wherein the step of controlling the output terminal of the engine to be connected to a generator of the vehicle to consume the power of the engine in the case where the exhaust pressure information is greater than or equal to the first threshold value, and the step of reducing the exhaust pressure of the supercharger includes:

controlling an operation manner of the engine and the battery based on the current power and the maximum charging power information.

4. The control method of the vehicle engine according to claim 3, wherein the step of controlling the operation manner of the engine and the battery based on the current power and the maximum charging power information includes:

5. The control method of the vehicle engine according to claim 3, characterized in that the step of controlling the generator to consume electric power includes:

controlling the generator to supply power to a heating device on the vehicle; and/or

6. The control method of the vehicle engine according to claim 5, characterized in that the step of controlling the battery to supply power to a heating device on the vehicle includes:

in the case where the power to be consumed is less than or equal to a third threshold, supplying power only to heating means on the vehicle;

7. The control method of the vehicle engine according to any one of claims 1 to 6,

the first threshold is determined based on an exhaust temperature, an exhaust pressure, and an intake pressure of the supercharger.

8. The control method of the vehicle engine according to any one of claims 1 to 6, characterized by further comprising:

9. A computer-readable storage medium, characterized in that a computer program is stored thereon, which when executed by a processor implements a control method of a vehicle engine according to any one of claims 1 to 8.

10. A vehicle, characterized by comprising:

a vehicle body;

a control device connected to the vehicle body, the control device including: memory, a processor and a computer program stored in the memory and executable on the processor for implementing a control method of a vehicle engine as claimed in any one of claims 1 to 8 when executing the computer program stored in the memory.