CN114109661B

CN114109661B - Carbon tank desorption control method and device, storage medium, electronic equipment and vehicle

Info

Publication number: CN114109661B
Application number: CN202010881521.8A
Authority: CN
Inventors: 汪武东; 吕丹丹
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2023-03-24
Anticipated expiration: 2040-08-27
Also published as: CN114109661A

Abstract

The invention provides a carbon tank desorption control method and device, a storage medium, electronic equipment and a vehicle. According to the method provided by the invention, the target opening of the carbon tank electromagnetic valve is calculated according to the actual desorption fuel oil flow, the desorption gas flow and the gas flow of the gas inlet manifold flowing through the gas inlet manifold, and the electromagnetic valve is controlled to execute the target opening; the opening of the electromagnetic valve is reduced under the condition of richer fuel so as to weaken the influence of introduced fuel steam on the operation of the engine; and along with going on continuously of desorption, fuel concentration reduces, and the developments improve the solenoid valve aperture again, realize the closed-loop control of carbon tank desorption process to under the prerequisite that does not influence the engine operation, effectively improve carbon tank desorption efficiency, the automobile carbon tank desorption control mode of having solved causes the problem that fuel burning is bad, fuel steam reveals easily.

Description

Carbon tank desorption control method and device, storage medium, electronic equipment and vehicle

Technical Field

The invention relates to the technical field of automobiles, in particular to a carbon tank desorption control method and device, a storage medium, electronic equipment and a vehicle.

Background

With the increasing global environmental protection problem, the exhaust emission of fuel automobiles is more and more strict.

At the present stage, a fuel evaporation control system is arranged in the vehicle and used for storing fuel in a fuel tank and fuel steam generated in the refueling process, so that the fuel steam is prevented from leaking into the atmosphere, and the environmental pollution is reduced; meanwhile, the fuel evaporation control can timely send the fuel steam collected in the carbon tank into an air inlet manifold of the engine, and the fuel steam is mixed with normal oil-gas mixed gas and then participates in combustion in the engine, so that the fuel steam is fully utilized.

In the process of timely feeding the fuel steam collected in the carbon tank into the air inlet manifold of the engine, fresh air needs to be sucked to flush the carbon tank, and the desorption capacity of the carbon tank is recovered.

However, in the existing carbon canister desorption method, after the engine is started, the opening of the electromagnetic valve of the carbon canister is gradually increased, which is easy to cause poor fuel combustion and engine torque jitter due to too large opening of the electromagnetic valve of the carbon canister, or causes problems of incomplete carbon canister desorption and fuel vapor leakage due to too small opening of the electromagnetic valve of the carbon canister.

Disclosure of Invention

In view of the above, the present invention is directed to a carbon canister desorption control method, device, storage medium, electronic device and vehicle, so as to solve the problems of poor fuel combustion and fuel vapor leakage easily caused by the existing automobile carbon canister desorption control method.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a carbon tank desorption control method is applied to a vehicle controller of a vehicle, the vehicle further comprises an engine, an electromagnetic valve and a carbon tank, the engine and the electromagnetic valve are electrically connected with the vehicle controller, one end of the electromagnetic valve is connected with an air inlet manifold of the engine, the other end of the electromagnetic valve is connected with the carbon tank through a pipeline, and the method comprises the following steps:

when the engine runs and the electromagnetic valve is opened, determining the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas;

determining the target opening degree of the electromagnetic valve according to the desorption fuel oil flow, the actual desorption gas flow and the gas flow of the gas inlet manifold;

and adjusting the electromagnetic valve according to the target opening.

Further, before the step of determining the intake manifold gas flow rate through the intake manifold, the actual desorbed gas flow rate through the pipeline, and the desorbed fuel oil flow rate in the desorbed gas when the engine is running and the solenoid valve is open, the method for controlling canister desorption further comprises:

controlling the electromagnetic valve to be closed when the engine runs;

when the electromagnetic valve is closed, acquiring a first fuel correction coefficient of the engine;

after a first fuel correction coefficient of the engine is obtained, controlling the electromagnetic valve to be opened according to a first opening degree;

when the engine runs and the electromagnetic valve is opened, determining the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel flow in the desorption gas, wherein the method comprises the following steps:

when the engine runs and the electromagnetic valve is opened, acquiring a second fuel correction coefficient of the engine, the gas flow of an intake manifold flowing through the intake manifold, a first pressure value of the intake manifold and a second pressure value of the pipeline;

determining the desorbed fuel flow in the desorbed gas according to the gas flow of the gas inlet manifold, the first fuel correction coefficient and the second fuel correction coefficient;

determining an actual pressure difference between the pipeline and the intake manifold according to the first pressure value and the second pressure value;

and determining the actual desorption gas flow according to the first opening degree and the actual pressure difference.

Further, the carbon canister desorption control method for determining the target opening degree of the electromagnetic valve according to the desorbed fuel flow, the actual desorbed gas flow and the gas flow of the gas inlet manifold comprises the following steps:

determining a target desorption gas flow ratio according to the desorption fuel oil flow, the actual desorption gas flow and the gas flow of the gas inlet manifold;

and determining the target opening degree of the electromagnetic valve according to the target desorption gas flow ratio, the gas flow of the gas inlet manifold and the actual pressure difference.

Further, in the carbon canister desorption control method, the determining a target desorption gas flow ratio according to the desorption fuel flow, the actual desorption gas flow and the gas flow of the gas inlet manifold includes:

determining a desorption fuel oil proportional coefficient in the desorption gas according to the desorption fuel oil flow and the actual desorption gas flow;

determining the total flow of desorption gas flowing through the electromagnetic valve through an integral algorithm according to the actual desorption gas flow;

inquiring a preset desorption gas flow ratio table according to the desorption fuel oil ratio coefficient and the total desorption gas flow, and determining a target desorption gas flow ratio; the desorption gas flow ratio table is used for showing the corresponding relation among the desorption fuel oil ratio coefficient, the total desorption gas flow and the desorption gas flow ratio.

Further, in the method for controlling canister desorption, the determining a target opening degree of the solenoid valve based on the target desorption gas flow rate ratio, the intake manifold gas flow rate, and the actual pressure difference includes:

determining the target desorption gas flow according to the target desorption gas flow proportion and the gas flow of the gas inlet manifold;

inquiring a preset electromagnetic valve opening table according to the target desorption gas flow and the actual pressure difference, and determining the target opening of the electromagnetic valve; the electromagnetic valve opening degree meter is used for describing the corresponding relation among the desorption gas flow, the pressure difference and the opening degree.

Another objective of the present invention is to provide a carbon canister desorption control device, wherein the carbon canister desorption control device is applied to a vehicle controller of a vehicle, the vehicle further includes an engine, an electromagnetic valve and a carbon canister, the engine and the electromagnetic valve are electrically connected to the vehicle controller, one end of the electromagnetic valve is connected to an intake manifold of the engine, the other end of the electromagnetic valve is connected to the carbon canister through a pipeline, a first pressure sensor is disposed at the intake manifold, a second pressure sensor is disposed at the pipeline, and the device includes:

the first determination module is used for determining the gas flow of the intake manifold flowing through the intake manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas when the engine runs and the solenoid valve is opened;

the second determination module is used for determining the target opening of the electromagnetic valve according to the desorbed fuel oil flow, the actual desorbed gas flow and the gas flow of the gas inlet manifold;

and the first control module is used for adjusting the electromagnetic valve according to the target opening degree.

Further, the device, intake manifold department is provided with first pressure sensor, pipeline department is provided with the second pressure sensor, the device still includes:

the second control module is used for controlling the electromagnetic valve to be closed when the engine runs before the steps of determining the gas flow of the air inlet manifold flowing through the air inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas when the electromagnetic valve is opened during the running of the engine;

the acquisition module is used for acquiring a first fuel correction coefficient of the engine when the electromagnetic valve is closed;

the third control module is used for controlling the opening of the electromagnetic valve according to the first opening after the first fuel correction coefficient of the engine is obtained;

the first control module includes:

an acquisition unit for acquiring a second fuel correction coefficient of the engine, an intake manifold gas flow rate flowing through the intake manifold, and a first pressure value of the intake manifold by the first pressure sensor and a second pressure value of the pipe by the second pressure sensor when the engine is running and the solenoid valve is open;

the first determining unit is used for determining the desorbed fuel flow in the desorbed gas according to the gas flow of the intake manifold, the first fuel correction coefficient and the second fuel correction coefficient;

the second determining unit is used for determining the actual pressure difference between the pipeline and the intake manifold according to the first pressure value and the second pressure value;

and the third determining unit is used for determining the actual desorption gas flow according to the first opening and the actual pressure difference.

Further, in the apparatus, the second determining module includes:

the fourth determining unit is used for determining a target desorption gas flow ratio according to the desorption fuel oil flow, the actual desorption gas flow and the gas flow of the gas inlet manifold;

and the fifth determining unit is used for determining the target opening of the electromagnetic valve according to the target desorption gas flow rate proportion, the gas flow rate of the gas inlet manifold and the actual pressure difference.

Further, in the apparatus, the fourth determining unit includes:

the first determining subunit is used for determining a desorption fuel oil proportional coefficient in the desorption gas according to the desorption fuel oil flow and the actual desorption gas flow;

the second determining subunit is used for determining the total flow of the desorption gas flowing through the electromagnetic valve through an integral algorithm according to the actual desorption gas flow;

the first inquiry subunit is used for inquiring a preset desorption gas flow ratio table according to the desorption fuel oil ratio coefficient and the total desorption gas flow to determine a target desorption gas flow ratio; the desorption gas flow ratio table is used for showing the corresponding relation among the desorption fuel oil ratio coefficient, the total desorption gas flow and the desorption gas flow ratio.

Further, in the apparatus, the fifth determining unit includes:

the third determining subunit is used for determining the target desorption gas flow rate according to the target desorption gas flow rate proportion and the gas flow rate of the gas inlet manifold;

the second query subunit is used for querying a preset electromagnetic valve opening degree table according to the target desorption gas flow and the actual pressure difference, and determining the target opening degree of the electromagnetic valve; the electromagnetic valve opening degree meter is used for describing the corresponding relation among the desorption gas flow, the pressure difference and the opening degree.

Compared with the prior art, the carbon tank desorption control method and the carbon tank desorption control device have the following advantages:

when the engine runs and the electromagnetic valve is opened, determining the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas; then determining the target opening of the electromagnetic valve according to the desorbed fuel oil flow, the actual desorbed gas flow and the gas flow of the gas inlet manifold; and adjusting the electromagnetic valve according to the target opening. Because the target opening of the carbon tank electromagnetic valve is calculated according to the actual desorption fuel oil flow, the desorption gas flow and the gas flow of the gas inlet manifold flowing through the gas inlet manifold, and the electromagnetic valve is controlled to execute the target opening; the opening of the electromagnetic valve is reduced under the condition of richer fuel so as to weaken the influence of introduced fuel steam on the operation of the engine; and along with going on continuously of desorption, fuel concentration reduces, and the developments improve the solenoid valve aperture again, therefore realize the closed-loop control of carbon tank desorption process to under the prerequisite that does not influence the engine operation, effectively improve carbon tank desorption efficiency, the automobile carbon tank desorption control mode of having solved causes the problem that fuel burning is bad, fuel steam reveals easily.

It is a further object of the present invention to provide a storage medium having a plurality of instructions stored thereon, wherein the instructions are adapted to be loaded by a processor and to perform the canister desorption control method as described above.

Another objective of the present invention is to provide an electronic device, comprising:

a processor adapted to implement instructions; and

a storage medium adapted to store a plurality of instructions adapted to be loaded by a processor and to perform a canister desorption control method as described above.

It is a further object of the present invention to provide a vehicle, wherein the vehicle includes the canister desorption control apparatus as described above.

The storage medium, the electronic device and the vehicle have the same advantages as the carbon tank desorption control method and device in comparison with the prior art, and are not repeated herein.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic flow chart of a carbon canister desorption control method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a carbon tank desorption system in an embodiment of the invention;

fig. 3 is a schematic flow chart of an embodiment of a carbon canister desorption control method according to an embodiment of the present invention;

fig. 4 is a schematic flow chart of another embodiment of a carbon canister desorption control method according to an embodiment of the present invention;

fig. 5 is a schematic flowchart of step S201 in the embodiment of the present invention;

FIG. 6 is a flowchart illustrating step S202 according to an embodiment of the present invention;

FIG. 7 is a flowchart illustrating a method for controlling desorption of a canister according to an embodiment of the present invention;

FIG. 8 is a schematic diagram illustrating an implementation of a carbon canister desorption control method according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a carbon canister desorption control device according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, a schematic flow diagram of a carbon canister desorption control method provided by an embodiment of the invention is shown, the method is applied to a vehicle controller of a vehicle, as shown in fig. 2, the vehicle further includes an engine, an electromagnetic valve and a carbon canister, the engine and the electromagnetic valve are both electrically connected with the vehicle controller, one end of the electromagnetic valve is connected with an intake manifold of the engine, and the other end of the electromagnetic valve is connected with the carbon canister through a pipeline, and the method includes steps S100 to S300.

In the embodiment of the invention, the carbon tank desorption system consists of the carbon tank, the electromagnetic valve, the engine and the vehicle control unit, wherein the engine and the electromagnetic valve are electrically connected with the vehicle control unit, and the engine and the electromagnetic valve are controlled by the vehicle control unit and can control the work of the engine and the opening and closing of the electromagnetic valve through the vehicle control unit. Wherein, because the one end of solenoid valve is connected with the air intake manifold of engine, the other end of solenoid valve passes through the pipeline and is connected with the carbon tank, therefore when opening through vehicle control unit control solenoid valve, can send into the engine burning with the oil gas of carbon tank storage, realizes the desorption to the carbon tank. Wherein, abundant desorption can prevent that the oil gas evaporation that the carbon tank reaches saturation and causes from revealing the problem.

In practical application, the carbon canister may be specifically an activated carbon canister; the canister is also in communication with the fuel tank of the vehicle for collecting and storing fuel in the tank and fuel vapors generated during refueling.

And S100, when the engine runs and the electromagnetic valve is opened, determining the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas.

In the step S100, the actual desorption gas flow rate refers to fuel vapor sent from the canister to the intake manifold via the solenoid valve; the desorbed fuel flow rate refers to a fuel flow rate included in the actual desorbed gas flow rate; the gas flow of the intake manifold is the gas flow flowing through the intake manifold, namely the total gas flow entering the engine to participate in combustion and work, and the gas flow of the intake manifold comprises fuel injected by an engine fuel injection nozzle, air sucked by an engine intake valve and fuel steam sent into the intake manifold by a carbon tank through an electromagnetic valve; wherein the air flow inhaled by the engine intake valve is fixed. In step S100, that is, when the engine runs by using the fuel in the fuel tank and the fuel vapor in the canister, the gas flow rate of the intake manifold, the actual desorption gas flow rate, and the desorption fuel flow rate are monitored or calculated, so as to adjust the opening of the electromagnetic valve, so that the fuel vapor sent from the canister can just enable the engine to fully combust the fuel.

And S200, determining the target opening of the electromagnetic valve according to the desorbed fuel oil flow, the actual desorbed gas flow and the gas flow of the gas inlet manifold.

In the step S200, since the fuel ratio in the desorbed gas can be determined according to the desorbed fuel flow and the actual desorbed gas flow, the opening degree of the electromagnetic valve that can just allow the engine to sufficiently burn the fuel, that is, the target opening degree, can be calculated and determined according to the desorbed fuel flow, the actual desorbed gas flow and the intake manifold gas flow determined in the step S100. Namely, the opening degree of the electromagnetic valve is reduced under the condition of richer fuel so as to weaken the influence of introduced fuel steam on the operation of the engine; and along with the continuation of desorption, fuel concentration reduces, and the developments improve the solenoid valve aperture again realizes the closed-loop control of carbon tank desorption process to under the prerequisite that does not influence engine operation, effectively improve carbon tank desorption efficiency.

And step S300, adjusting the electromagnetic valve according to the target opening.

In step S300, the vehicle controller controls the solenoid valve to adjust the opening degree to the target opening degree according to the target opening degree determined in step S200.

In practical application, because the target opening is determined based on the current gas flow rate of the intake manifold, the desorption fuel flow rate and the actual desorption gas flow rate, after the opening of the electromagnetic valve is adjusted to the target opening, the fuel concentration in the desorption gas is gradually reduced along with the continuous desorption, and at this time, the target opening of the electromagnetic valve needs to be determined again according to the changed desorption fuel flow rate, the actual desorption gas flow rate and the gas flow rate of the intake manifold until the opening of the electromagnetic valve is matched with the current gas flow rate of the intake manifold, the desorption fuel flow rate and the actual desorption gas flow rate.

In addition, the embodiment of the invention can close the carbon tank electromagnetic valve to work after the desorption is finished by dynamically calculating the oil gas content, thereby prolonging the service life of the electromagnetic valve.

Compared with the prior art, the carbon tank desorption control method has the following advantages:

when the engine runs and the electromagnetic valve is opened, determining the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas; then determining the target opening of the electromagnetic valve according to the desorption fuel flow, the actual desorption gas flow and the gas flow of the gas inlet manifold; and adjusting the electromagnetic valve according to the target opening. Because the target opening of the carbon tank electromagnetic valve is calculated according to the actual desorption fuel oil flow, the desorption gas flow and the gas flow of the gas inlet manifold flowing through the gas inlet manifold, and the electromagnetic valve is controlled to execute the target opening; the opening of the electromagnetic valve is reduced under the condition of richer fuel so as to weaken the influence of introduced fuel steam on the operation of the engine; and along with going on continuously of desorption, fuel concentration reduces, and the developments improve the solenoid valve aperture again, and fuel steam desorption in the carbon tank is complete, therefore realizes the closed-loop control of carbon tank desorption process to under the prerequisite that does not influence the engine operation, effectively improve carbon tank desorption efficiency, the automobile carbon tank desorption control mode of having solved causes the problem that fuel burning is bad, fuel steam reveals easily.

Optionally, in an implementation manner, as shown in fig. 3, the carbon canister desorption control method provided in the embodiment of the present invention further includes, before step S100, steps S101 to S103, where step S100 includes steps S104 to S107.

And step S101, controlling the electromagnetic valve to be closed when the engine runs.

In step S101, that is, when the engine starts to operate, the electromagnetic valve is not opened first.

And step S102, when the electromagnetic valve is closed, acquiring a first fuel correction coefficient of the engine.

In step S102, when the engine is running and the electromagnetic valve is in a closed state, that is, when the desorbed gas in the carbon canister does not participate in fuel combustion, a fuel correction coefficient executed by a fuel injector of the engine to maintain normal combustion of fuel, that is, the first fuel correction coefficient, is obtained, so as to subsequently calculate the fuel flow in the desorbed gas. In practical application, the fuel correction coefficient is obtained by closed-loop adjustment according to an oxygen sensor signal at an exhaust port of an engine.

And step S103, after a first fuel correction coefficient of the engine is obtained, controlling the opening of the electromagnetic valve according to the first opening degree.

In step S103, the first opening degree may be a default opening degree, and specifically may be 10%. The first opening degree may be a target opening degree determined last time.

In step S103, after the first fuel correction coefficient is obtained, the electromagnetic valve is controlled to open according to the default opening degree, so as to control the carbon canister to start the desorption process.

And step S104, when the engine runs and the electromagnetic valve is opened, acquiring a second fuel correction coefficient of the engine, the gas flow of the intake manifold flowing through the intake manifold, a first pressure value of the intake manifold and a second pressure value of the pipeline.

In step S104, since the fuel correction coefficient is a degree that the current fuel correction is reflected in the engine fuel control process, the fuel correction coefficient will be affected by introducing excessive oil gas after the solenoid valve is opened. Therefore, when the engine is running and the electromagnetic valve is in an open state, namely under the condition that desorbed gas in the carbon tank participates in fuel combustion, a fuel correction coefficient executed by a fuel injection nozzle of the engine to keep normal combustion of fuel, namely the second fuel correction coefficient is obtained. Meanwhile, monitoring the gas pressure value at the intake manifold, namely the first pressure value, by a pressure sensor; and acquiring a gas pressure value at a pipeline between the electromagnetic valve and the carbon tank, namely the second pressure value. Meanwhile, the total gas flow entering the engine, namely the gas flow of the intake manifold, is obtained through monitoring or calculation; specifically, the intake mass of each cylinder can be calculated according to an ideal gaseous equation by combining the first pressure value with parameters such as the charging efficiency of the engine, the cylinder volume of the engine, the air density and the like; and because of mass conservation, the number of times of air suction per rotation of the four-cylinder four-stroke engine is 2, and the air intake mass of each cylinder can be calculated through the rotating speed and the number of times of air suction to obtain the air flow of the air intake manifold.

And S105, determining the desorbed fuel flow in the desorbed gas according to the gas flow of the gas inlet manifold, the first fuel correction coefficient and the second fuel correction coefficient.

In step S105, since the air flow inhaled by the engine intake valve is relatively fixed, the fuel correction coefficient executed by the fuel injector is adjusted from the first fuel correction coefficient to the second fuel correction coefficient due to the fact that the desorbed fuel in the desorbed gas participates in the combustion, and thus the desorbed fuel flow in the desorbed gas can be determined according to the intake manifold gas flow, the first fuel correction coefficient, and the second fuel correction coefficient. Specifically, the desorbed fuel flow rate = (second fuel correction coefficient — first fuel correction coefficient) × intake manifold gas flow rate.

And S106, determining the actual pressure difference between the pipeline and the intake manifold according to the first pressure value and the second pressure value.

In step S106, the actual pressure difference between the pipe and the intake manifold is calculated by subtracting the first pressure value from the second pressure value.

And S107, determining the actual desorption gas flow according to the first opening and the actual pressure difference.

In step S107, the actual desorption gas flow rate flowing through the solenoid valve can be determined by the actual pressure difference between the pipeline and the intake manifold and the corresponding relationship between the opening degree of the solenoid valve, the pressure difference, and the desorption gas flow rate. In practical application, considering that calculation of the desorption gas flow needs to be based on the structures of the intake manifold, the electromagnetic valve and the pipeline, a desorption gas flow meter can be determined in advance through experiments, the desorption gas flow meter is used for representing the corresponding relation among the opening of the electromagnetic valve, the pressure difference between the pipeline and the intake manifold and the desorption gas flow, after the first opening and the actual pressure difference are obtained, the actual desorption gas flow can be determined rapidly by inquiring the desorption gas flow meter, and the calculation amount is reduced.

In the embodiment, the obtained fuel correction coefficient changes by closing and opening the electromagnetic valve, and the fuel flow in the desorbed gas is calculated based on the change of the fuel correction coefficient and the total gas flow of the intake manifold; meanwhile, the actual flow of the desorbed gas is quickly determined according to the current opening of the electromagnetic valve and the pressure difference between the two sides of the electromagnetic valve.

Alternatively, in one embodiment, as shown in fig. 4, the step S200 includes steps S201 to S202.

Step S201, determining a target desorption gas flow ratio according to the desorption fuel flow, the actual desorption gas flow and the gas flow of the gas inlet manifold.

In the step S201, the desorption gas flow ratio is the ratio of the desorption gas in the total gas fed to the engine, and the target desorption gas flow ratio is determined by combining the current desorption fuel flow and the actual desorption gas flow into the total gas flow of the engine, so that the fuel can be sufficiently combusted.

And S202, determining the target opening of the electromagnetic valve according to the target desorption gas flow ratio, the gas flow of the gas inlet manifold and the actual pressure difference.

In the step S202, the target desorption gas flow rate entering the intake manifold can be determined by combining the intake manifold gas flow rate with the target desorption gas flow rate ratio, and then the opening degree of the battery valve, that is, the target opening degree, which can achieve the target desorption gas flow rate can be determined by combining the actual pressure difference at two sides of the electromagnetic valve with the target desorption gas flow rate.

This embodiment, according to desorption fuel flow, actual desorption gas flow and air intake manifold gas flow, confirm target desorption gas flow proportion, and according to target desorption gas flow proportion, the actual pressure difference of air intake manifold gas flow and solenoid valve both sides, confirm to satisfy the fuel and fully burn, guarantee the solenoid valve aperture that the fuel steam in the carbon tank can effectively be desorbed, avoided the desorption in-process because of sending into the desorption gas of engine too much and the problem of engine speed shake appears, can effectively adapt to the desorption demand of sealing oil tank and big carbon tank.

Optionally, in an embodiment, as shown in fig. 5, the step S201 includes steps S211 to S213:

and S211, determining the proportion coefficient of the desorbed fuel in the desorbed gas according to the flow rate of the desorbed fuel and the actual flow rate of the desorbed gas.

In step S211, the desorption fuel ratio coefficient refers to a ratio of fuel in the desorption gas flowing through the solenoid valve, and may be calculated by dividing the desorption fuel flow by the actual desorption gas flow.

And step S212, determining the total flow of the desorption gas flowing through the electromagnetic valve through an integral algorithm according to the actual desorption gas flow.

In step S212, the total desorption gas flow rate is the total desorption gas amount flowing through the solenoid valve from the opening of the solenoid valve to the current time, specifically, the calculated actual desorption gas flow rate is integrated, that is, the desorption gas flow rate flowing through the solenoid valve is accumulated, so as to obtain the total desorption gas flow rate.

Step S213, inquiring a preset desorption gas flow ratio table according to the desorption fuel oil ratio coefficient and the total desorption gas flow, and determining a target desorption gas flow ratio; the desorption gas flow ratio table is used for showing the corresponding relation among the desorption fuel oil ratio coefficient, the total desorption gas flow and the desorption gas flow ratio.

In the step S213, the desorption fuel ratio coefficient is a ratio of fuel in the desorption gas currently flowing through the solenoid valve, and as the fuel vapor concentration inside the carbon canister is continuously reduced along with continuous desorption of the carbon canister, the desorption fuel ratio coefficient is transient, and the vehicle controller controls the solenoid valve to adjust the opening degree with a certain time delay.

Based on the situation, considering that the total flow of the desorbed gas is the total amount of the desorbed gas flowing through the electromagnetic valve from the opening of the electromagnetic valve to the current moment, the fuel steam stored in the carbon tank is constant, the residual desorbed fuel amount in the carbon tank is determined according to the total amount of the desorbed gas, and the change trend of the desorbed fuel flow can be further determined, and by utilizing the current desorbed fuel proportional coefficient and combining the change trend of the desorbed fuel flow, the reasonable desorbed gas flow proportion can be determined on the premise of comprehensively considering the change trend of the desorbed fuel flow. When the vehicle control unit determines the target opening degree of the electromagnetic valve according to the desorption gas flow ratio and controls the electromagnetic valve to adjust according to the target opening degree, the actual situation can be matched, and the situation that the electromagnetic valve adjusting action is continuously in a lagging state cannot occur.

And considering the difference of carbon tanks, the corresponding relation between the total desorbed gas amount and the change trend of the desorbed fuel oil flow is different, which also causes the matched desorbed gas flow proportion to be different. Therefore, it is necessary to determine the corresponding relationship among the desorption fuel ratio coefficient, the total desorption gas flow rate, and the desorption gas flow ratio through a test in advance, and form a table, that is, the desorption gas flow ratio table.

Then, the desorption gas flow ratio table is queried according to the desorption fuel oil ratio coefficient determined in step S211 and the total desorption gas flow determined in step S213, so that the target desorption gas flow ratio can be determined quickly.

Optionally, in a specific embodiment, as shown in fig. 6, the step S202 includes steps S221 to S222:

and step S221, determining the target desorption gas flow according to the target desorption gas flow proportion and the gas flow of the gas inlet manifold.

In step S221, the target desorption gas flow rate ratio is determined according to the current desorption fuel flow rate and the actual desorption gas flow rate, and the total gas flow rate entering the engine, so that the fuel can be sufficiently combusted. Therefore, according to the target desorption gas flow rate proportion and the gas flow rate of the intake manifold, the target desorption gas flow rate entering the intake manifold can be determined. Specifically, the target desorption gas flow rate = intake manifold gas flow rate × target desorption gas flow rate ratio.

Step S222, inquiring a preset electromagnetic valve opening table according to the target desorption gas flow and the actual pressure difference, and determining the target opening of the electromagnetic valve; the electromagnetic valve opening degree meter is used for describing the corresponding relation among the desorption gas flow, the pressure difference and the opening degree.

In step S222, since the desorption gas flow rate is affected by the opening degree of the solenoid valve and the pressure difference between both sides of the solenoid valve, and the above effects are different depending on the solenoid valve, the pipeline and the canister, it is necessary to determine the corresponding relationship among the desorption gas flow rate, the pressure difference and the opening degree through experiments in advance and form a table, i.e., the desorption gas flow rate ratio table. Then, the desorption gas flow ratio table is queried according to the target desorption gas flow determined in step S221 and the actual pressure difference between the two sides of the solenoid valve determined in the previous step, so that the target desorption gas flow can be determined quickly and accurately.

In practical application, please refer to fig. 2, which shows a schematic structural diagram of a carbon canister desorption system in an embodiment of the present invention. As shown in fig. 2, the canister desorption system includes an activated canister 21, an electromagnetic valve 22, an intake manifold 23, and an engine 24; wherein the engine 24 is in communication with the intake manifold 23; one side of the electromagnetic valve 22 is connected with an air inlet manifold 23, and the other side of the electromagnetic valve 22 is connected with the activated carbon canister 21 through a pipeline; a first pressure sensor 25 is mounted on the intake manifold 23 for measuring a gas pressure P1 in the intake manifold 23; a second pressure sensor 26 is arranged on a pipeline between the electromagnetic valve 22 and the activated carbon tank 21 and is used for measuring the gas pressure P2 in the desorption pipeline; the difference between the pressure P2 and the pressure P1 is the working pressure difference of the canister solenoid valve, and the flow rate of the desorption gas flowing through the solenoid valve 22 can be calculated by combining the working pressure difference with the opening degree of the solenoid valve.

The carbon tank desorption system further comprises a vehicle control unit, the vehicle control unit is connected with the first pressure sensor 25, the second pressure sensor 26 and the signal end of the electromagnetic valve 22, and the vehicle control unit is further connected with an engine controller; the vehicle control unit obtains the pressure P1 of the intake manifold through the first pressure sensor 25, and obtains the pressure P2 of the pipeline between the electromagnetic valve 22 and the activated carbon tank 21 through the second pressure sensor 26, that is, the desorption pipeline pressure P2; the vehicle control unit can acquire an opening degree signal of the electromagnetic valve 22 and send an opening degree adjusting instruction to the electromagnetic valve 22; the vehicle control unit collects engine signals and controls an execution unit of the engine through the engine controller. The engine signals include intake manifold gas flow, fuel correction factor, etc.

In practical application, please refer to fig. 7, which shows a flowchart of the implementation of the carbon canister desorption control method according to the embodiment of the present invention.

As shown in fig. 7, in step S301, when the engine is running, the electromagnetic valve is first closed, and closed-loop adjustment is performed according to an oxygen sensor signal sent by an oxygen sensor at an air outlet of the engine to obtain an oil injection rich-lean coefficient B1, that is, a first fuel correction coefficient, and then step S302 is performed;

in step S302, the solenoid valve is controlled to open, and closed-loop adjustment is continued according to an oxygen sensor signal sent by an oxygen sensor at an engine air outlet, so as to obtain an oil injection rich-lean coefficient B2, that is, a second fuel correction coefficient; meanwhile, acquiring the pressure P1 of an intake manifold, the pressure P2 of an oil tank and the opening A1 of an electromagnetic valve, wherein the pressure of the oil tank is also the desorption pipeline pressure; then calculating the gas flow S1 of the gas inlet manifold and the desorption gas flow S2 of the carbon tank according to the parameters;

in step S303, calculating the flow S3 of fuel oil contained in the desorbed gas of the carbon tank according to B2, B1 and S2, and calculating a desorbed fuel oil proportional coefficient X1 in the desorbed gas according to the ratio of S3 to S2;

in step S304, calculating a target desorption flow S4 according to the desorption fuel oil proportional coefficient X1 and the gas flow S1 of the intake manifold, and determining a corresponding target opening A2 of the carbon tank electromagnetic valve according to the target desorption flow S4;

in step S305, the above-mentioned opening A2 is performed according to the solenoid valve to control the canister to perform the desorption process.

In practical application, please refer to fig. 8, which shows an implementation schematic diagram of a carbon canister desorption control method according to an embodiment of the present invention.

As shown in fig. 8, in step S401, while the engine is running, the electromagnetic valve is first closed;

in step S402, when the engine is running and the electromagnetic valve is closed, a fuel correction coefficient B1 of the engine, that is, a first fuel correction coefficient, is obtained, and then the process proceeds to step S403;

in step S403, the opening of the solenoid valve is controlled according to the opening A1, that is, the canister is opened to start desorption, which corresponds to the opening A1 of the canister; wherein, A1 is 10% by default;

in step S404, when the engine is running and the electromagnetic valve is opened, a fuel correction coefficient B2 of the engine, that is, a second fuel correction coefficient is obtained; meanwhile, an intake manifold gas flow rate S1 is acquired in step S405; acquiring a pressure value P1 monitored by a pressure sensor at the position of an intake manifold in step S406, acquiring a pressure value P2 monitored by a pressure sensor at the position of a pipeline between an electromagnetic valve and a carbon tank in step S407, and determining a pressure difference D1 between a pipeline of the carbon tank and the intake manifold in step S408;

in step S409, calculating a fuel flow rate S3= (B2-B1) × S1 in the desorbed gas from the intake manifold gas flow rate, the first fuel correction coefficient, and the second fuel correction coefficient;

in step S410, determining a desorption gas flow rate S2 flowing through the solenoid valve according to the opening A1 of the solenoid valve and a pressure difference D1 between the canister pipeline and the intake manifold;

in step S411, calculating a desorption fuel proportional coefficient X1= S3/S2;

in step S412, integral calculation is performed on the desorption gas flow rate to obtain a total desorption gas flow rate V1 flowing through the solenoid valve;

in step S413, querying a preset desorption gas flow rate ratio coefficient table X2 to (X1, V1) according to the desorption fuel oil ratio coefficient X1 and the total desorption gas flow rate V1, wherein the desorption gas flow rate ratio table is used for indicating a corresponding relationship among the desorption fuel oil ratio coefficient, the total desorption gas flow rate and the desorption gas flow rate ratio, so as to determine the desorption fuel oil ratio coefficient X2;

in step S414, the desorption gas flow rate S4 is determined by multiplying the intake manifold gas flow rate S1 by the desorption gas flow rate proportional coefficient X2;

in step S415, a preset solenoid valve opening table A2 to (D1, S4) describing a correspondence relationship between the desorption gas flow rate, the pressure difference, and the opening degree is queried according to the desorption gas flow rate S4 and the pressure difference D1 between the canister pipeline and the intake manifold, so as to determine a target solenoid valve opening degree A2, and then the solenoid valve is adjusted according to the target solenoid valve opening degree.

Another objective of the present invention is to provide a carbon canister desorption control device, where the carbon canister desorption control device is applied to a vehicle controller of a vehicle, the vehicle further includes an engine, an electromagnetic valve and a carbon canister, the engine and the electromagnetic valve are electrically connected to the vehicle controller, one end of the electromagnetic valve is connected to an intake manifold of the engine, the other end of the electromagnetic valve is connected to the carbon canister through a pipeline, a first pressure sensor is disposed at the intake manifold, and a second pressure sensor is disposed at the pipeline, where please refer to fig. 9, fig. 9 shows a schematic structural diagram of the carbon canister desorption control device according to an embodiment of the present invention, and the device includes:

the first determining module 91 is used for determining the gas flow of the intake manifold flowing through the intake manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas when the engine runs and the electromagnetic valve is opened;

the second determining module 92 is used for determining the target opening of the electromagnetic valve according to the desorbed fuel oil flow, the actual desorbed gas flow and the gas flow of the gas inlet manifold;

and the first control module 93 is used for adjusting the electromagnetic valve according to the target opening.

In the device provided by the embodiment of the invention, when the engine runs and the electromagnetic valve is opened, the first determining module 91 determines the gas flow of the intake manifold flowing through the intake manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel flow in the desorption gas; then, the second determining module 92 determines the target opening of the electromagnetic valve according to the desorbed fuel flow, the actual desorbed gas flow and the gas flow of the gas inlet manifold; and the first control module 93 adjusts the electromagnetic valve according to the target opening. Because the target opening of the carbon tank electromagnetic valve is calculated according to the actual desorption fuel oil flow, the desorption gas flow and the gas flow of the gas inlet manifold flowing through the gas inlet manifold, and the electromagnetic valve is controlled to execute the operation according to the target opening; the opening of the electromagnetic valve is reduced under the condition of richer fuel so as to weaken the influence of introduced fuel steam on the operation of the engine; and along with the continuation of desorption, fuel concentration reduces, and the developments improve the solenoid valve aperture again realizes the closed-loop control of carbon tank desorption process to under the prerequisite that does not influence engine operation, effectively improve carbon tank desorption efficiency.

Optionally, in the apparatus, a first pressure sensor is disposed at the intake manifold, a second pressure sensor is disposed at the pipe, and the apparatus further includes:

the second control module is used for controlling the electromagnetic valve to be closed when the engine runs and before the steps of determining the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas when the electromagnetic valve is opened;

the first control module 93 includes:

the acquisition unit is used for acquiring a second fuel correction coefficient of the engine and the gas flow of an intake manifold flowing through the intake manifold when the engine is operated and the electromagnetic valve is opened, and is used for acquiring a first pressure value of the intake manifold through the first pressure sensor and acquiring a second pressure value of the pipeline through the second pressure sensor;

the first determining unit is used for determining the desorbed fuel flow in the desorbed gas according to the gas flow of the gas inlet manifold, the first fuel correction coefficient and the second fuel correction coefficient;

Further, in the apparatus, the second determining module 92 includes:

the fourth determining unit is used for determining a target desorption gas flow ratio according to the desorption fuel flow, the actual desorption gas flow and the gas flow of the gas inlet manifold;

and the fifth determining unit is used for determining the target opening of the electromagnetic valve according to the target desorption gas flow proportion, the gas flow of the gas inlet manifold and the actual pressure difference.

Further, in the apparatus, the fourth determining unit includes:

the first determining subunit is used for determining the desorption fuel oil proportional coefficient in the desorption gas according to the desorption fuel oil flow and the actual desorption gas flow;

the second determining subunit is used for determining the total flow of the desorption gas flowing through the electromagnetic valve according to the actual desorption gas flow and through an integral algorithm;

the first query subunit is used for querying a preset desorption gas flow ratio table according to the desorption fuel oil ratio coefficient and the total desorption gas flow to determine a target desorption gas flow ratio; the desorption gas flow ratio table is used for showing the corresponding relation among the desorption fuel oil ratio coefficient, the total desorption gas flow and the desorption gas flow ratio.

Further, in the apparatus, the fifth determining unit includes:

the third determining subunit is used for determining the target desorption gas flow according to the target desorption gas flow proportion and the gas flow of the gas inlet manifold;

the second inquiry subunit is used for inquiring a preset electromagnetic valve opening table according to the target desorption gas flow and the actual pressure difference and determining the target opening of the electromagnetic valve; the electromagnetic valve opening degree meter is used for describing the corresponding relation among the flow rate of the desorbed gas, the pressure difference and the opening degree.

It is still another object of the present invention to provide an electronic device, which includes:

a processor adapted to implement instructions; and

The invention further aims to provide a vehicle, which comprises a vehicle controller, and further comprises an engine, an electromagnetic valve and a carbon tank, wherein the engine and the electromagnetic valve are electrically connected with the vehicle controller, one end of the electromagnetic valve is connected with an air intake manifold of the engine, the other end of the electromagnetic valve is connected with the carbon tank through a pipeline, a first pressure sensor is arranged at the air intake manifold, and a second pressure sensor is arranged at the pipeline.

In summary, according to the carbon canister desorption control method and device, the storage medium, the electronic device and the vehicle provided by the application, when the engine runs and the electromagnetic valve is opened, the gas flow of the gas inlet manifold flowing through the gas inlet manifold, the actual desorption gas flow flowing through the pipeline and the desorption fuel oil flow in the desorption gas are determined; then determining the target opening of the electromagnetic valve according to the desorption fuel flow, the actual desorption gas flow and the gas flow of the gas inlet manifold; and adjusting the electromagnetic valve according to the target opening. Because the target opening of the carbon tank electromagnetic valve is calculated according to the actual desorption fuel oil flow, the desorption gas flow and the gas flow of the gas inlet manifold flowing through the gas inlet manifold, and the electromagnetic valve is controlled to execute the target opening; the opening of the electromagnetic valve is reduced under the condition of richer fuel so as to weaken the influence of introduced fuel steam on the operation of the engine; and along with going on continuously of desorption, fuel concentration reduces, and the developments improve the solenoid valve aperture again, realize the closed-loop control of carbon tank desorption process to under the prerequisite that does not influence the engine operation, effectively improve carbon tank desorption efficiency, the automobile carbon tank desorption control mode of having solved causes the problem that fuel burning is bad, fuel steam reveals easily.

The embodiments in the present specification are all described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same and similar between the embodiments may be referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

In a typical configuration, the computer device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory. The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium. Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (fransitory media), such as modulated data signals and carrier waves.

Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising one of \ 8230; \8230;" does not exclude the presence of additional like elements in a process, method, article, or terminal device that comprises the element.

The carbon tank desorption control method, the carbon tank desorption control device, the storage medium, the electronic device and the vehicle provided by the invention are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A carbon tank desorption control method is characterized by being applied to a vehicle controller of a vehicle, the vehicle further comprises an engine, an electromagnetic valve and a carbon tank, the engine and the electromagnetic valve are electrically connected with the vehicle controller, one end of the electromagnetic valve is connected with an air inlet manifold of the engine, the other end of the electromagnetic valve is connected with the carbon tank through a pipeline, and the method comprises the following steps:

adjusting the electromagnetic valve according to the target opening;

before the step of determining the gas flow rate of the intake manifold through the intake manifold, the actual desorption gas flow rate through the pipeline and the desorption fuel oil flow rate in the desorption gas when the engine is running and the solenoid valve is opened, the method further comprises the following steps:

controlling the electromagnetic valve to be closed when the engine runs;

the step of determining the gas flow rate of the intake manifold flowing through the intake manifold, the actual desorption gas flow rate flowing through the pipeline and the desorption fuel oil flow rate in the desorption gas when the engine is operated and the solenoid valve is opened comprises the following steps:

and determining the actual desorption gas flow according to the first opening and the actual pressure difference.

2. The carbon tank desorption control method according to claim 1, wherein the determining the target opening degree of the electromagnetic valve according to the desorbed fuel flow rate, the actual desorbed gas flow rate and the intake manifold gas flow rate includes:

3. The canister desorption control method according to claim 2, wherein the determining a target desorption gas flow rate ratio based on the desorbed fuel flow rate, the actual desorption gas flow rate and the intake manifold gas flow rate includes:

4. The carbon canister desorption control method according to claim 2, wherein the determining the target opening degree of the electromagnetic valve according to the target desorption gas flow rate proportion, the intake manifold gas flow rate and the actual pressure difference comprises:

5. The utility model provides a carbon tank desorption controlling means, its characterized in that is applied to the vehicle control unit of vehicle, the vehicle still includes engine, solenoid valve and carbon tank, the engine reaches the solenoid valve all with the vehicle control unit electricity is connected, the one end of solenoid valve with the air intake manifold of engine is connected, the other end of solenoid valve pass through the pipeline with the carbon tank is connected, the device includes:

the first control module is used for adjusting the electromagnetic valve according to the target opening degree;

intake manifold department is provided with first pressure sensor, pipeline department is provided with second pressure sensor, the device still includes:

the first control module includes:

6. The apparatus of claim 5, wherein the second determining module comprises:

7. The apparatus according to claim 6, wherein the fourth determining unit comprises:

the first inquiry subunit is used for inquiring a preset desorption gas flow ratio table according to the desorption fuel oil ratio coefficient and the total desorption gas flow to determine a target desorption gas flow ratio; the desorption gas flow ratio table is used for expressing the corresponding relation among the desorption fuel oil ratio coefficient, the total desorption gas flow and the desorption gas flow ratio.

8. The apparatus according to claim 6, wherein the fifth determining unit comprises:

the second inquiry subunit is used for inquiring a preset electromagnetic valve opening degree table according to the target desorption gas flow and the actual pressure difference and determining the target opening degree of the electromagnetic valve; the electromagnetic valve opening degree meter is used for describing the corresponding relation among the desorption gas flow, the pressure difference and the opening degree.

9. A storage medium adapted to store a plurality of instructions adapted to be loaded by a processor and to perform a canister desorption control method according to any one of claims 1 to 4.

10. An electronic device, comprising:

a processor adapted to implement instructions; and

a storage medium adapted to store a plurality of instructions adapted to be loaded by a processor and to perform a canister desorption control method according to any one of claims 1 to 4.

11. A vehicle, characterized in that the vehicle includes a vehicle control unit, the vehicle further includes an engine, an electromagnetic valve and a carbon canister, the engine and the electromagnetic valve are electrically connected with the vehicle control unit, one end of the electromagnetic valve is connected with an intake manifold of the engine, the other end of the electromagnetic valve is connected with the carbon canister through a pipeline, and the vehicle further includes the carbon canister desorption control device as claimed in any one of claims 5 to 8.