CN118128649A

CN118128649A - Air inflow determining method and device, storage medium and electronic equipment

Info

Publication number: CN118128649A
Application number: CN202410253713.2A
Authority: CN
Inventors: 张成伟; 褚国良; 李钊; 杜慧娟
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Filing date: 2024-03-06
Publication date: 2024-06-04

Abstract

The invention provides an air inflow determining method and device, a storage medium and electronic equipment, wherein the method comprises the following steps: acquiring current working condition data of an engine of a vehicle, and determining the working condition of the engine based on the working condition data; invoking a sensor corresponding to the working condition to acquire the air inlet temperature and the air inlet pressure of the engine; and determining each air inflow operation parameter, and calculating the air inflow temperature, the air inflow pressure and each air inflow operation parameter to obtain the air inflow of the engine. In the process of determining the air inflow of the engine, different sensors are used for different working conditions of the engine, and the sensors corresponding to the working conditions are used for acquiring the air inflow temperature and the air inflow pressure of the engine, so that the accuracy of data acquisition can be improved, and the accuracy of subsequent air inflow determination is further provided.

Description

Air inflow determining method and device, storage medium and electronic equipment

Technical Field

The present invention relates to the field of vehicle technologies, and in particular, to a method and apparatus for determining an intake air amount, a storage medium, and an electronic device.

Background

In the emission regulations of road state six, because the higher requirements are put forward on the exhaust emissions, the higher requirements are put forward on the calculation of fuel oil and air intake, and only then the output of engine power and the emission of clean exhaust can be better controlled. Therefore, how to make the accuracy of the determined intake air amount higher becomes a problem that engineers need to solve.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a method and apparatus for determining an intake air amount, a storage medium, and an electronic device, by applying the scheme provided by the present invention, when an engine is in different working conditions, different intake air amount determining modes can be used, that is, different sensors are used to collect data required when calculating the intake air amount, so that accuracy of collected data is improved, and accuracy of intake air amount is improved.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

An intake air amount determining method, comprising:

Acquiring current working condition data of an engine of a vehicle;

Determining a working condition of the engine based on the working condition data;

invoking a sensor corresponding to the working condition to acquire the air inlet temperature and the air inlet pressure of the engine;

and determining each air inflow operation parameter, and calculating the air inflow temperature, the air inflow pressure and each air inflow operation parameter to obtain the air inflow of the engine.

The method, optionally, the determining, based on the operating condition data, an operating condition of the engine includes:

determining whether the engine meets a first stable working condition or not based on the engine rotating speed, the fuel injection quantity and the whole vehicle state in the working condition data;

when the engine is determined to meet the first stable working condition, determining whether the engine meets a second stable working condition or not based on the current throttle opening in the working condition data;

when the engine meets the second stable working condition, determining that the working condition of the engine is a stable working condition;

and when the engine does not meet the first stable working condition or the engine does not meet the second stable working condition, determining that the working condition of the engine is not the stable working condition.

In the above method, optionally, the calling a sensor corresponding to the working condition to obtain the intake air temperature and the intake air pressure of the engine includes:

when the working condition of the engine is a stable working condition, an air inlet pressure temperature sensor is called to collect the air inlet temperature and the air inlet pressure of the engine;

and when the working condition of the engine is not a stable working condition, calling a Venturi sensor to acquire the air inlet temperature and the air inlet pressure of the engine.

In the above method, optionally, the determining whether the engine meets the second stable working condition based on the current throttle opening in the working condition data includes:

Acquiring the opening of the last throttle valve;

determining a difference between the last throttle opening and the current throttle opening;

determining a bias integral based on the difference;

When the deviation integral is smaller than a preset value, determining that the engine meets the second stable working condition;

and when the deviation integral is not smaller than a preset value, determining that the engine does not meet the second stable working condition.

In the above method, optionally, the calculating the intake air temperature, the intake air pressure and each of the intake air amount calculation parameters to obtain the intake air amount of the engine includes:

Determining the charging efficiency based on the engine displacement, the engine speed and the first constant in each air inflow operation parameter;

multiplying a second constant in the air inlet pressure, the air charging efficiency and each air inflow operation parameter to obtain a first numerical value;

Dividing the first value by the intake temperature to obtain a second value;

And multiplying the second numerical value by the intake air temperature correction coefficient in each intake air amount operation parameter to obtain the intake air amount of the engine.

An intake air amount determining apparatus comprising:

the acquisition unit is used for acquiring current working condition data of an engine of the vehicle;

the first determining unit is used for determining the working condition of the engine based on the working condition data;

The calling unit is used for calling the sensor corresponding to the working condition to acquire the air inlet temperature and the air inlet pressure of the engine;

And the second determining unit is used for determining each air inflow operation parameter and calculating the air inflow temperature, the air inflow pressure and each air inflow operation parameter to obtain the air inflow of the engine.

The above apparatus, optionally, the first determining unit includes:

the first determining subunit is used for determining whether the engine meets a first stable working condition or not based on the engine rotating speed, the fuel injection quantity and the whole vehicle state in the working condition data;

a second determining subunit, configured to determine, when it is determined that the engine meets the first stable operating condition, whether the engine meets a second stable operating condition based on a current throttle opening in the operating condition data;

A third determining subunit, configured to determine, when the engine meets the second stable operating condition, that an operating condition of the engine is a stable operating condition;

And the fourth determination subunit is used for determining that the working condition of the engine is not a stable working condition when the engine does not meet the first stable working condition or the engine does not meet the second stable working condition.

The above device, optionally, the calling unit includes:

The first calling subunit is used for calling an air inlet pressure temperature sensor to acquire the air inlet temperature and the air inlet pressure of the engine when the working condition of the engine is a stable working condition;

And the second calling subunit is used for calling the Venturi sensor to collect the air inlet temperature and the air inlet pressure of the engine when the working condition of the engine is not a stable working condition.

The above apparatus, optionally, the second determining subunit includes:

an acquisition subunit for acquiring the opening of the last throttle valve;

a fifth determination subunit configured to determine a difference between the last throttle opening and the current throttle opening;

a sixth determining subunit configured to determine a bias integral based on the difference value;

A seventh determining subunit, configured to determine that the engine meets the second stable working condition when the deviation integral is smaller than a preset value;

and the eighth determination subunit is used for determining that the engine does not meet the second stable working condition when the deviation integral is not smaller than a preset value.

The above apparatus, optionally, the second determining unit includes:

a ninth determination subunit configured to determine a charge efficiency based on the engine displacement, the engine speed, and the first constant in each of the intake air amount operation parameters;

A first operation subunit, configured to multiply the intake pressure, the charging efficiency, and a second constant in each intake air amount operation parameter to obtain a first numerical value;

the second operation subunit is used for dividing the first numerical value by the air inlet temperature to obtain a second numerical value;

and a third operation subunit, configured to multiply the second value with an intake air temperature correction coefficient in each intake air amount operation parameter to obtain an intake air amount of the engine.

A storage medium comprising stored instructions, wherein the instructions, when executed, control a device in which the storage medium resides to perform an intake air amount determining method as described above.

An electronic device comprising a memory, and one or more instructions, wherein the one or more instructions are stored in the memory and configured to be executed by the one or more processors to perform the intake air amount determining method as described above.

Compared with the prior art, the invention has the following advantages:

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flowchart of an intake air amount determining method provided by an embodiment of the present invention;

FIG. 2 is a flow chart of a method for determining the operating condition of an engine based on operating condition data provided by an embodiment of the present invention;

FIG. 3 is another flow chart for determining the operating condition of an engine according to an embodiment of the present invention;

fig. 4 is a flowchart for determining an intake air amount provided by an embodiment of the present invention;

Fig. 5 is another flowchart for determining an intake air amount provided by an embodiment of the present invention;

fig. 6 is a schematic structural view of an intake air amount determining apparatus provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the present disclosure, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Term interpretation:

A venturi tube: the venturi tube is a throttle type flow sensor developed according to the venturi effect, and is a standard throttle device.

Intake air pressure temperature sensor: the intake air pressure sensor and the intake air temperature sensor are integrated, the intake air pressure sensor is connected with the intake manifold through a vacuum tube, and the principle is that the vacuum change in the intake manifold is sensed along with different loads of the engine, and then the change of the internal resistance of the sensor is converted into a voltage signal. The latter is a negative temperature coefficient thermistor, and the resistance decreases when the temperature increases, and increases when the temperature decreases. As the resistance changes, resulting in a voltage change, different temperature signals are generated.

The traditional method for calculating the air inflow of the vehicle mainly comprises two modes, namely, an air inflow pressure temperature sensor is used, and a Bernoulli equation is applied to calculate; the other is to use a venturi tube and use a throttle equation for calculation. Both modes have advantages and disadvantages when the engine is under different working conditions. Under partial working conditions, the two are limited by the measurement principle, and the calculation accuracy is not high. The inaccuracy of the calculation of the intake air amount brings challenges to the control of the post-treatment, and the exceeding of the post-treatment exhaust emission or the crystallization of the post-treatment are easily caused.

According to the air inflow calculation method based on the air inflow pressure temperature sensor, when the engine is in a transient working condition, the calculated air inflow is deviated due to the fact that the pressure and the temperature cannot be responded in time, and when the engine is in a steady working condition, the air inflow is calculated more accurately. The air inflow calculating method based on the venturi tube is accurate in calculating the air inflow when the engine is in a transient working condition. However, in a steady-state working condition with low load, the calculated air inflow has great deviation due to the small pressure difference between the front end and the rear end of the venturi tube.

The vehicle can only use one of the two modes to determine the air inflow, and no matter which mode is used, the air inflow determination is inaccurate under certain working conditions.

Therefore, in order to solve the problem of accurate calculation of the air inflow in the prior art, the invention provides an air inflow determining scheme, which can determine the air inflow of an engine by using different sensors under different working conditions and then determine the air inflow by using the air inflow temperature and the air inflow pressure, thereby improving the accuracy of detecting the air inflow temperature and the air inflow pressure under different working conditions and further improving the accuracy of determining the air inflow.

The present invention may be applied to a control system for a vehicle that may be comprised of a number of general purpose or special purpose computing device environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet devices, multiprocessor devices, distributed computing environments that include any of the above devices or devices, and the like.

Referring to fig. 1, a flowchart of a method for determining an intake air amount according to an embodiment of the present invention is provided, and is specifically described below.

S101, acquiring current working condition data of an engine of a vehicle.

The method comprises the steps of collecting current working condition data of an engine of a vehicle, wherein the working condition data comprise, but are not limited to, the engine speed, the fuel injection quantity, the whole vehicle state and the throttle opening, preferably, the engine speed is the current speed of the engine, the fuel injection quantity is the current fuel injection quantity, the whole vehicle state is the current state of the vehicle, and the throttle opening is the current throttle opening.

In the acquisition of the operating mode data, a corresponding sensor may be used, for example, the engine speed may be acquired from a sensor for measuring the engine speed, and the injection amount may be acquired from a sensor for measuring the injection amount.

S102, determining the working condition of the engine based on the working condition data.

The preferred engine operating conditions may be divided into stable operating conditions and other operating conditions, wherein stable operating conditions may also be understood as specific operating conditions, and other operating conditions may be understood as transient operating conditions and may also be considered as unstable operating conditions.

When the working condition of the engine is determined, the content in the working condition data is used for judging, and finally whether the working condition of the engine is a stable working condition or not can be determined.

S103, calling a sensor corresponding to the working condition to acquire the air inlet temperature and the air inlet pressure of the engine.

Different sensors are used under different working conditions, so that the accuracy of the acquired air inlet temperature and air inlet pressure of the engine is improved.

Different working conditions are suitable for different sensors, and the accuracy of acquired data is improved through the sensors suitable for the working conditions.

S104, determining each air inflow operation parameter, and calculating the air inflow temperature, the air inflow pressure and each air inflow operation parameter to obtain the air inflow of the engine.

The operation parameters of each air inflow comprise variables and constants, and the constants can be the most suitable values obtained through a large number of experiments and can be set according to actual demands.

And calculating each air inflow operation parameter, each air inflow temperature and each air inflow pressure based on a preset operation strategy, so that the air inflow of the engine can be obtained.

In the method provided by the embodiment of the invention, the current working condition data of the engine of the vehicle is obtained, and the working condition of the engine is determined based on the working condition data; invoking a sensor corresponding to the working condition to acquire the air inlet temperature and the air inlet pressure of the engine; and determining each air inflow operation parameter, and calculating the air inflow temperature, the air inflow pressure and each air inflow operation parameter to obtain the air inflow of the engine. In the process of determining the air inflow of the engine, different sensors are used for different working conditions of the engine, and the sensors corresponding to the working conditions are used for acquiring the air inflow temperature and the air inflow pressure of the engine, so that the accuracy of data acquisition can be improved, and the accuracy of subsequent air inflow determination is further provided.

Referring to fig. 2, a flowchart of a method for determining an operating condition of an engine based on operating condition data according to an embodiment of the present invention is described below.

S201, determining whether the engine meets a first stable working condition or not based on the engine rotating speed, the fuel injection quantity and the whole vehicle state in the working condition data; when it is determined that the engine satisfies the first stable operating condition, S202 is executed; when it is determined that the engine does not meet the first stable operating condition, S204 is executed.

Determining whether the engine meets a first stable working condition or not, wherein the first-stage judgment is carried out on the engine, and when the engine meets the first-stage judgment, executing S202; when the engine does not satisfy the first-stage determination, S204 is executed.

S202, determining whether the engine meets a second stable working condition or not based on the current throttle opening in the working condition data; executing S203 when the engine meets the second stable working condition; when the engine does not meet the second stable operating condition, S204 is performed.

Determining whether the engine meets a second working condition or not as performing secondary judgment on the engine, and determining the working condition of the engine as a stable working condition when the engine meets the primary judgment and the secondary judgment simultaneously; when the engine does not meet the primary judgment or the secondary judgment, the working condition of the engine is determined to be unstable.

The process of determining whether the engine meets the second operating condition is as follows:

Acquiring the opening of the last throttle valve;

Determining a bias integral based on the difference;

when the deviation integral is smaller than a preset value, determining that the engine meets a second stable working condition;

And when the deviation integral is not smaller than the preset value, determining that the engine does not meet the second stable working condition.

The front-back step length between the previous throttle scale and the current throttle opening is the difference value, and the difference value is the absolute value; the deviation integral is the deviation value integral per unit time.

Comparing the integral of the deviation value in unit time with a preset value, and determining that the engine meets a second stable working condition when the integral of the deviation value in unit time is smaller than the preset value, namely determining that the engine meets a second-level judgment; and when the integral of the deviation value in unit time is not smaller than a preset value, determining that the engine does not meet a second stable working condition, namely determining that the engine does not meet a second-stage judgment.

S203, determining the working condition of the engine as a stable working condition.

S204, determining that the working condition of the engine is not a stable working condition.

When the working condition of the engine is determined to be not a stable working condition, the working condition of the engine can be determined to be an instantaneous working condition; further, in practical applications, when the working condition of the engine is an instantaneous working condition, the working condition of the engine can be continuously tracked.

Referring to fig. 3, another flowchart for determining the working condition of the engine according to the embodiment of the present invention is shown in the drawing, by performing a first-stage determination on the rotational speed of the engine, the fuel injection amount, and the state of the whole vehicle (i.e., determining whether the engine meets the first stable working condition), so as to determine whether the whole vehicle is in the stable working condition, and entering a second-stage determination on the stable working condition on the premise that the engine meets the first-stage determination, using the front-back step length of the actual opening of the throttle valve to obtain the deviation integral of unit time, if the deviation integral of unit time is smaller than the limit value, the specific working condition is considered (i.e., the working condition of the engine is considered as the stable working condition), otherwise, the specific working condition is not considered (i.e., the working condition of the engine is considered as the transient working condition).

Further, after the working condition of the engine is determined, the sensor can be selected based on the working condition of the engine, and when the working condition of the engine is a stable working condition, the air inlet pressure and temperature sensor is called to collect the air inlet temperature and the air inlet pressure of the engine; when the working condition of the engine is not a stable working condition, the Venturi sensor is called to collect the air inlet temperature and the air inlet pressure of the engine.

Referring to fig. 4, a flowchart for determining an intake air amount according to an embodiment of the present invention is provided, as shown in the drawing, whether an engine is in a stable condition is determined using an engine speed, an injection amount, a vehicle state, and a throttle opening, when the engine is in the stable condition, an intake air temperature and an intake air pressure of the engine are collected using an intake air pressure temperature sensor, and then the intake air amount is calculated using the collected intake air temperature and intake air pressure; when the engine is not in a stable working condition, the venturi sensor is used for collecting the air inlet temperature and the air inlet pressure of the engine, and then the collected air inlet temperature and air inlet pressure are used for calculating the air inlet amount.

After the intake air temperature and the intake air pressure of the engine are acquired, the intake air amount of the engine can be calculated, and a specific flow is described below with reference to fig. 5.

After obtaining the air inlet temperature and air inlet pressure of the engine, determining each air inlet operation parameter, wherein each air inlet operation parameter comprises engine displacement, engine speed, a first constant, a second constant and an air inlet temperature correction coefficient; it should be noted that, the first constant, the second constant and the intake temperature correction coefficient are constants and are preset fixed values, and the engine displacement and the engine rotation speed are acquired through related sensors, that is, the engine displacement and the engine rotation speed are both variables.

Multiplying the engine displacement, the engine rotating speed and the first constant to obtain the charging efficiency of the engine; then multiplying the inflation efficiency, the air inlet pressure and the second constant to obtain a first numerical value; and dividing the first numerical value by the intake air temperature to obtain a second numerical value, and multiplying the second numerical value by the intake air temperature correction coefficient to obtain the total intake air quantity.

The invention improves the calculation accuracy of the air inflow by optimizing the calculation mode of the air inflow on the basis of the existing state six configuration. The venturi sensor works on the principle that fluid filled in a pipeline forms local contraction at the throat neck of the venturi by the flow velocity when flowing through a throttling part of the pipeline, so that the flow velocity is increased, the static pressure is reduced, and then a pressure difference is generated between the front and the rear of the throat neck of the venturi. The larger the fluid flow, the larger the pressure difference is, so that the flow can be measured according to the pressure difference. An intake pressure temperature sensor is a component on an engine that measures the pressure and temperature of the gas in the intake manifold. The obtained information value is used for calculating the air inflow according to a gas theoretical formula. Can be simplified as: m (gas mass flow) =p (gas inlet pressure) ×ε (constant) ×v (gas volume)/T (gas temperature).

In the normal running process of the engine, the pressure difference at two ends of the throat pipe is almost equal under partial steady-state working conditions due to the measurement principle of the air inlet flow sensor, so that the calculated air inlet amount is inaccurate. If the air inflow is calculated by adopting an air inflow pressure temperature sensor, under partial transient working conditions, the air inflow pressure and the temperature are difficult to follow in time, and the problem of inaccurate air inflow calculation can also exist. The inaccurate air inflow calculation problem can cause deviation in subsequent oil injection calculation and post-treatment urea injection calculation, and finally the fault of the whole vehicle is reported.

The invention aims to solve the problems, fully uses the calibration experience data in the development process of the engine, pointedly partitions the operation condition of the engine, and dynamically adjusts the collection mode of the related data for calculating the air inflow.

According to the invention, through carrying out partition treatment on the whole working condition of the engine operation, a mature calibration experience is applied, and a relatively accurate air inflow calculation method under different working conditions is input into the electronic control unit. When the engine is in a normal running state, the current running working condition is obtained at any time, and real-time judgment is carried out with the accurate air inflow calculation method stored in the electronic control unit. When the engine is in a steady-state condition, the intake air amount is calculated based on an intake pressure temperature sensor. When the engine is in a transient operating condition, the intake air amount is calculated based on the venturi. The advantage of this is that the calculated air inflow is more accurate under the steady state operating mode of low load to bring accurate input to follow-up emission control and combustion control.

The invention can greatly improve the calculation precision of the air inflow of the engine on the premise of not increasing the manufacturing cost and the weight of the whole vehicle, and provide more reliable input for the calculation of the subsequent fuel injection quantity and urea injection quantity, thereby optimizing the economy, the dynamic property and the emission of the engine. The invention fully uses the practical problem solving experience in product development to effectively identify the difficulty and pain point of air inflow calculation under the current technical route. In the running process of the engine, the area with inaccurate air inflow calculation in the same calculation method is accurately distinguished, and the calculation method is specifically provided, so that the air inflow can be accurately calculated under any running working condition.

Corresponding to the method shown in fig. 1, the present invention provides an intake air amount determining apparatus for supporting the implementation of the method shown in fig. 1, which may be provided to a control system of a vehicle.

Referring to fig. 6, a schematic structure of an intake air amount determining apparatus according to an embodiment of the present invention is provided, and a specific description thereof is as follows.

An obtaining unit 601, configured to obtain current working condition data of an engine of a vehicle;

a first determining unit 602, configured to determine a working condition of the engine based on the working condition data;

A calling unit 603, configured to call a sensor corresponding to the working condition, and obtain an intake air temperature and an intake air pressure of the engine;

a second determining unit 604 for determining each intake air amount operation parameter, and operating the intake air temperature, the intake air pressure, and each intake air amount operation parameter to obtain the intake air amount of the engine.

In the device provided by the embodiment of the invention, the current working condition data of the engine of the vehicle is obtained, and the working condition of the engine is determined based on the working condition data; invoking a sensor corresponding to the working condition to acquire the air inlet temperature and the air inlet pressure of the engine; and determining each air inflow operation parameter, and calculating the air inflow temperature, the air inflow pressure and each air inflow operation parameter to obtain the air inflow of the engine. In the process of determining the air inflow of the engine, different sensors are used for different working conditions of the engine, and the sensors corresponding to the working conditions are used for acquiring the air inflow temperature and the air inflow pressure of the engine, so that the accuracy of data acquisition can be improved, and the accuracy of subsequent air inflow determination is further provided.

In another embodiment of the present invention, a first determining unit 602 of the apparatus includes:

In another embodiment of the present invention, the calling unit 603 of the apparatus includes:

In another embodiment of the present invention, a second determining subunit of the apparatus includes:

an acquisition subunit for acquiring the opening of the last throttle valve;

In an apparatus according to another embodiment of the present invention, a second determining unit 604 of the apparatus includes:

The embodiment of the invention also provides a storage medium, which comprises stored instructions, wherein the equipment where the storage medium is controlled to execute the air inflow determining method when the instructions run.

The embodiment of the invention also provides an electronic device, the structure of which is shown in fig. 7, specifically including a memory 701 and one or more instructions 702, where the one or more instructions 702 are stored in the memory 701, and configured to be executed by the one or more processors 703 to perform the above-mentioned intake air amount determining method by executing the one or more instructions 702.

It should be noted that, the information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data need to comply with the related laws and regulations and standards of the related country and region.

The specific implementation process and derivative manner of the above embodiments are all within the protection scope of the present invention.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for a system or system embodiment, since it is substantially similar to a method embodiment, the description is relatively simple, with reference to the description of the method embodiment being made in part. The systems and system embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intake air amount determining method, characterized by comprising:

Acquiring current working condition data of an engine of a vehicle;

2. The method of claim 1, wherein the determining the operating condition of the engine based on the operating condition data comprises:

3. The method of claim 2, wherein the invoking the sensor corresponding to the operating condition to obtain the intake air temperature and the intake air pressure of the engine comprises:

4. The method of claim 2, wherein the determining whether the engine meets a second stable operating condition based on a current throttle opening in the operating data comprises:

Acquiring the opening of the last throttle valve;

determining a bias integral based on the difference;

5. The method according to claim 1, wherein said calculating the intake air temperature, the intake air pressure, and the respective intake air amount calculation parameters to obtain the intake air amount of the engine includes:

Dividing the first value by the intake temperature to obtain a second value;

6. An intake air amount determining device, characterized by comprising:

7. The apparatus according to claim 6, wherein the first determining unit includes:

8. The apparatus of claim 7, wherein the calling unit comprises:

9. A storage medium comprising stored instructions, wherein the instructions, when executed, control a device in which the storage medium is located to perform the intake air amount determining method of any one of claims 1-5.

10. An electronic device comprising a memory, and one or more instructions, wherein the one or more instructions are stored in the memory and configured to be executed by the one or more processors to perform the intake air amount determining method of any of claims 1-5.