阅读说明：本技术 瞬态进气量测量方法、装置、电子设备及存储介质 (Transient intake air quantity measuring method and device, electronic equipment and storage medium ) 是由 王新校 栾军山 于 2020-12-30 设计创作，主要内容包括：本申请提供了一种瞬态进气量测量方法、装置、电子设备及存储介质。在该方法中首先获取在当前采样时刻下第一位置(即文丘里管)处的瞬态进气量。进而确定处于第一位置与第二位置(发动机进气口处)之间的第一管路的瞬态进气量,将所述第一位置处的瞬态进气量与第一管路的瞬态进气量的差作为第二位置处的瞬态进气量。与现有技术相比,本申请可得到位于发动机进气口处的第二位置的瞬态进气量,第二位置与第一位置相比,第二位置距离发动机进气口较近,因而第二位置处的瞬态进气量相比于第一位置处的瞬态进气量能够表征实际进入发动机的瞬态进气量,提高了发动机瞬态气量的测量精度,从而降低了发动机在加速状态下的烟度。(The application provides a transient intake air quantity measuring method and device, electronic equipment and a storage medium. In this method, the transient intake air amount at the first position (i.e., venturi tube) at the current sampling time is first acquired. And then determining the transient air intake quantity of the first pipeline between the first position and the second position (at the air inlet of the engine), and taking the difference between the transient air intake quantity at the first position and the transient air intake quantity of the first pipeline as the transient air intake quantity at the second position. Compared with the prior art, the transient air inflow measuring method and the device have the advantages that the transient air inflow of the second position at the air inlet of the engine can be obtained, the second position is closer to the air inlet of the engine compared with the first position, and therefore the transient air inflow of the second position can represent the transient air inflow actually entering the engine compared with the transient air inflow of the first position, the measurement accuracy of the transient air quantity of the engine is improved, and accordingly the smoke degree of the engine in an acceleration state is reduced.)

1. A method of transient induction mass measurement, comprising:

acquiring transient air inflow at a first position at the current sampling time, wherein the first position is located in a venturi tube of an engine;

determining a transient intake air amount of a first pipeline between the first position and a second position at a current sampling moment, wherein the second position is located at an engine air inlet;

and taking the difference between the transient air inflow at the first position and the transient air inflow of the first pipeline as the transient air inflow at the second position.

2. The transient intake air amount measurement method according to claim 1, wherein the determining the transient intake air amount of the first pipe between the first position and the second position at the current sampling timing includes:

determining the total amount of the first gas cached in the first pipeline at the current sampling time;

determining the total amount of the second gas cached in the first pipeline at the last sampling moment;

determining the transient air inflow of the first pipeline according to the total amount of the first gas, the total amount of the second gas and the sampling period;

the sampling period is the difference between the current sampling time and the last sampling time.

3. The transient intake air amount measuring method according to claim 2, wherein the determining the total amount of the first gas buffered in the first pipeline at the current sampling time includes:

obtaining a temperature and a pressure at the second location at a current sampling time;

determining a volume of the first conduit;

determining a total amount of the first gas buffered in the first pipeline based on the temperature at the second location, the pressure at the second location, and the volume of the first pipeline.

4. The transient induction air quantity measuring method according to claim 1, further comprising:

obtaining a first speed signal of an engine at a current sampling time

Filtering the first rotating speed signal to obtain a second rotating speed signal;

determining the number of cylinders of the engine;

and determining the single-cylinder transient air inflow of the engine according to the second rotating speed signal, the number of the cylinders and the transient air inflow at the second position.

5. An instantaneous intake air amount measuring device, characterized by comprising:

the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring the transient air inflow at a first position at the current sampling moment, and the first position is located in a Venturi tube of an engine;

the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the transient air inflow of a first pipeline between a first position and a second position at the current sampling moment, and the second position is located at an engine air inlet;

the first calculation module takes the difference between the transient intake air amount at the first position and the transient intake air amount of the first pipeline as the transient intake air amount at the second position.

6. The transient intake air amount measuring device according to claim 5, wherein the first determining module includes:

the first determining unit is used for determining the total amount of the first gas cached in the first pipeline at the current sampling moment;

the second determining unit is used for determining the total amount of the second gas cached in the first pipeline at the last sampling moment;

the third determining unit is used for determining the transient air inflow of the first pipeline according to the total amount of the first gas, the total amount of the second gas and a sampling period;

the sampling period is the difference between the current sampling time and the last sampling time.

7. The transient intake air amount measuring device according to claim 6, wherein the first determining unit includes:

a first obtaining subunit, configured to obtain a temperature and a pressure at the second position at a current sampling time;

a first determining subunit for determining a volume of the first line;

a second determining subunit determining a total amount of the first gas buffered in the first pipeline according to the temperature at the second location, the pressure at the second location, and the volume of the first pipeline.

8. The transient gas amount measuring device according to claim 1, further comprising:

a second obtaining module for obtaining a first rotation speed signal of the engine at the current sampling moment

The filtering module is used for filtering the first rotating speed signal to obtain a second rotating speed signal;

a second determination module to determine a number of cylinders of the engine;

and the second calculation module is used for determining the transient air inflow of a single cylinder of the engine according to the second rotating speed signal, the number of the cylinders and the transient air inflow at the second position.

9. An electronic device, comprising:

a memory for storing a program;

a processor configured to execute the program, the program specifically configured to:

acquiring transient air inflow at a first position at the current sampling time, wherein the first position is located in a venturi tube of an engine;

determining a transient intake air amount of a first pipeline between the first position and a second position at a current sampling moment, wherein the second position is located at an engine air inlet;

and taking the difference between the transient air inflow at the first position and the transient air inflow of the first pipeline as the transient air inflow at the second position.

10. A storage medium, wherein instructions in the storage medium, when executed by an electronic device, enable the electronic device to perform the transient air intake amount measuring method according to any one of claims 1 to 4.

Technical Field

The application relates to the field of engine development, in particular to a method and a device for measuring transient air inflow, electronic equipment and a storage medium.

Background

The transient air inflow of the engine refers to fresh air entering the engine under the transient working condition. The transient air inflow is an important factor for determining the transient oil injection quantity and the transient smoke intensity of the engine, so that the measurement accuracy of the transient air quantity is improved, and the transient oil injection quantity and the transient smoke intensity of the engine are controlled.

At present, a venturi tube in an air inlet pipeline of an engine is mainly adopted to measure the transient air inflow of the engine. However, in practical cases, since the venturi is located at a distance from the engine intake, fresh air needs to pass through the venturi to reach the engine intake, and thus the transient intake air amount at the venturi is not necessarily equal to the transient intake air amount at the engine intake. For example, when the engine is in an acceleration state, the transient intake air amount at the venturi tube is larger than that at the engine air inlet, so that if the transient intake air amount at the venturi tube is taken as the transient intake air amount at the engine air inlet, the calculated transient fuel injection amount of the engine is larger, and the amount of gas actually entering the engine is smaller, so that fuel injection cannot be sufficiently combusted, and the smoke intensity of the engine is larger.

Therefore, the above measurement method cannot accurately measure the transient intake air quantity of the engine air inlet, so that the smoke intensity of the engine is larger in an acceleration state.

Disclosure of Invention

In view of this, the present application provides a method and an apparatus for measuring a transient intake air amount, an electronic device, and a storage medium, so as to improve measurement accuracy of a transient air amount of an engine, thereby reducing smoke intensity of the engine in an acceleration state.

In order to achieve the above purpose, the present application provides the following technical solutions:

a transient intake air amount measuring method comprising:

acquiring transient air inflow at a first position at the current sampling time, wherein the first position is located in a venturi tube of an engine;

determining a transient intake air amount of a first pipeline between the first position and a second position at a current sampling moment, wherein the second position is located at an engine air inlet;

and taking the difference between the transient air inflow at the first position and the transient air inflow of the first pipeline as the transient air inflow at the second position.

Preferably, the determining the transient intake air amount of the first pipeline between the first position and the second position at the current sampling time comprises:

determining the total amount of the first gas cached in the first pipeline at the current sampling time;

determining the total amount of the second gas cached in the first pipeline at the last sampling moment;

determining the transient air inflow of the first pipeline according to the total amount of the first gas, the total amount of the second gas and the sampling period;

the sampling period is the difference between the current sampling time and the last sampling time.

Preferably, the determining the total amount of the first gas buffered in the first pipeline at the current sampling time includes:

obtaining a temperature and a pressure at the second location at a current sampling time;

determining a volume of the first conduit;

determining a total amount of the first gas buffered in the first pipeline based on the temperature at the second location, the pressure at the second location, and the volume of the first pipeline.

Preferably, the method further comprises the following steps:

obtaining a first speed signal of an engine at a current sampling time

Filtering the first rotating speed signal to obtain a second rotating speed signal;

determining the number of cylinders of the engine;

and determining the single-cylinder transient air inflow of the engine according to the second rotating speed signal, the number of the cylinders and the transient air inflow at the second position.

An instantaneous intake air amount measuring device comprising:

the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring the transient air inflow at a first position at the current sampling moment, and the first position is located in a Venturi tube of an engine;

the device comprises a first determination module, a second determination module and a control module, wherein the first determination module is used for determining the transient air inflow of a first pipeline between a first position and a second position at the current sampling moment, and the second position is located at an engine air inlet;

the first calculation module takes the difference between the transient intake air amount at the first position and the transient intake air amount of the first pipeline as the transient intake air amount at the second position.

Preferably, the first determining module includes:

the first determining unit is used for determining the total amount of the first gas cached in the first pipeline at the current sampling moment;

the second determining unit is used for determining the total amount of the second gas cached in the first pipeline at the last sampling moment;

the third determining unit is used for determining the transient air inflow of the first pipeline according to the total amount of the first gas, the total amount of the second gas and a sampling period;

the sampling period is the difference between the current sampling time and the last sampling time.

Preferably, the first determination unit includes:

a first obtaining subunit, configured to obtain a temperature and a pressure at the second position at a current sampling time;

a first determining subunit for determining a volume of the first line;

a second determining subunit determining a total amount of the first gas buffered in the first pipeline according to the temperature at the second location, the pressure at the second location, and the volume of the first pipeline.

Preferably, the method further comprises the following steps:

a second obtaining module for obtaining a first rotation speed signal of the engine at the current sampling moment

The filtering module is used for filtering the first rotating speed signal to obtain a second rotating speed signal;

a second determination module to determine a number of cylinders of the engine;

and the second calculation module is used for determining the transient air inflow of a single cylinder of the engine according to the second rotating speed signal, the number of the cylinders and the transient air inflow at the second position.

An electronic device, comprising:

a memory for storing a program;

a processor configured to execute the program, the program specifically configured to:

acquiring transient air inflow at a first position at the current sampling time, wherein the first position is located in a venturi tube of an engine;

determining a transient intake air amount of a first pipeline between the first position and a second position at a current sampling moment, wherein the second position is located at an engine air inlet;

and taking the difference between the transient air inflow at the first position and the transient air inflow of the first pipeline as the transient air inflow at the second position.

A storage medium in which instructions are executed by an electronic device, so that the electronic device can perform the transient induction air quantity measuring method as described in any one of the above.

According to the technical scheme, the transient intake air quantity measuring method is provided, and the transient intake air quantity at the first position (namely the venturi tube) at the current sampling time is obtained firstly. And then determining the transient air intake quantity of the first pipeline between the first position and the second position (at the air inlet of the engine), and taking the difference between the transient air intake quantity at the first position and the transient air intake quantity of the first pipeline as the transient air intake quantity at the second position. Compared with the prior art, the transient air inflow of the second position can be obtained, and the second position is located at the air inlet of the engine, so that the transient air inflow of the second position can represent the transient air inflow actually entering the engine compared with the transient air inflow of the first position, the measurement accuracy of the transient air quantity of the engine is improved, and the smoke intensity of the engine in an acceleration state is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of an engine intake line connection according to an embodiment of the present disclosure;

fig. 2 is an architecture diagram of an implementation environment of a transient intake air amount measurement method according to an embodiment of the present application;

FIG. 3 is a flow chart of one implementation of a method of transient induction quantity provided by an embodiment of the present application;

FIG. 4 is a logic diagram of a filtering process for a first speed signal provided herein;

FIG. 5 is a graph of a first speed signal and a second speed signal provided by an embodiment of the present application;

FIG. 6 is a single-cylinder transient intake air quantity graph of the engine provided by the embodiment of the application;

fig. 7 is a structural diagram of an implementation manner of a transient intake air quantity measuring device according to an embodiment of the present application;

fig. 8 is a block diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a method and a device for measuring transient gas quantity, electronic equipment and a storage medium. Before describing the technical solutions provided by the embodiments of the present application in detail, application scenarios and implementation environments related to the embodiments of the present application are briefly described here.

First, an application scenario related to the embodiment of the present application is described.

As shown in FIG. 1, a schematic diagram of an engine intake line connection is provided for an embodiment of the present application.

Aiming at the measurement of the transient air quantity of the engine, the transient air quantity of the engine is measured mainly by installing an air inlet flowmeter (such as a Venturi tube) in an air inlet pipeline of the engine at present. Specifically, a venturi tube is installed in an intake line (e.g., at M1) in the intake line of the engine, and the transient intake air quantity measured by the venturi tube is taken as the transient intake air quantity of the engine.

However, in practice, the transient inlet air flow at the venturi is not necessarily equal to the transient inlet air flow at the engine intake (M2) since the venturi is at a distance from the engine intake (M2) where fresh air passes through the venturi. For example, when the engine is in an acceleration state, the amount of intake air in the engine intake line increases, and since the venturi is located in front of the engine intake port, the transient amount of intake air at the venturi is larger than that at the engine intake port.

If the transient air inflow at the venturi tube is still used for determining the transient oil injection quantity of the engine, the transient oil injection quantity of the engine is larger, the quantity of gas actually entering the engine is smaller, the oil injection cannot be sufficiently combusted, and the smoke intensity of the engine is larger.

In summary, the current transient air inflow measuring method cannot accurately measure the transient air inflow of the air inlet of the engine, so that the smoke intensity of the engine is larger in an acceleration state.

Next, an implementation environment related to the embodiments of the present application will be described.

Fig. 2 is a schematic diagram of an implementation environment of a transient intake air amount measurement method according to an embodiment of the present application. The implementation environment includes: an electronic device 21, a venturi tube 22 installed at the position of M1, a pressure sensor 23 installed at the position of M2, and a temperature sensor 24.

Illustratively, the electronics 21 and venturi 22 may be connected and in communication via a wireless or wired network.

Illustratively, the electronic device 21 and the pressure sensor 23 may establish a connection and communicate via a wireless or wired network.

For example, the electronic device 21 and the temperature sensor 24 may be connected and communicate via a wireless or wired network.

Illustratively, the electronic device 21 has a volume of the first line pre-stored therein, which is between M1 and M2.

For example, a client runs in the electronic device 21, and if the client is an application client, the electronic device 21 may install the client; if the client is a web page version client, the electronic device 11 may display the web page version client through a browser.

Fig. 1 is merely an example, and fig. 1 shows 1 electronic device 21, 1 venturi tube 22, 1 pressure sensor 23, and 1 temperature sensor 24. In practical applications, the number of the electronic devices 11, the intake air flow meter 22, the pressure sensor 23 and the temperature sensor 24 can be set according to practical requirements, and the number of the components in fig. 1 is not limited by the embodiment of the present disclosure.

It will be appreciated by those skilled in the art that the above-described electronic devices are merely exemplary, and that other electronic devices, now known or later developed, that may be suitable for use with the present disclosure are intended to be included within the scope of the present disclosure and are hereby incorporated by reference.

The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.

Fig. 3 is a flowchart of an implementation manner of a transient charge amount measurement method according to an embodiment of the present application. The method comprises the following steps: step S301 to step S30

In step S301, the transient intake air amount at the first position at the current sampling timing is acquired.

Illustratively, the first location is at a venturi of the engine.

For example, the transient intake air amount at the first position may be obtained based on the venturi.

In step S302, the transient intake air amount of the first pipe between the first position and the second position at the current sampling timing is determined.

Illustratively, the second position is at an engine intake.

In step S303, the difference between the transient intake air amount at the first position and the transient intake air amount of the first pipe is taken as the transient intake air amount at the second position.

Illustratively, it can be based on a preset formula M₂＝M₁Δ M calculating the transient intake air quantity at the second position;

wherein M is₂Indicating the transient intake air quantity at the second position, M₁Indicating the transient intake air amount at the first position, and Δ M indicating the transient intake air amount of the first pipe.

According to the technical scheme, the transient intake air quantity measuring method is provided, and the transient intake air quantity at the first position (namely the venturi tube) at the current sampling time is obtained firstly. And then determining the transient air intake quantity of the first pipeline between the first position and the second position (at the air inlet of the engine), and taking the difference between the transient air intake quantity at the first position and the transient air intake quantity of the first pipeline as the transient air intake quantity at the second position. Compared with the prior art, the transient air inflow of the second position can be obtained, and the second position is located at the air inlet of the engine, so that the transient air inflow of the second position can represent the transient air inflow actually entering the engine compared with the transient air inflow of the first position, the measurement accuracy of the transient air quantity of the engine is improved, and the smoke intensity of the engine in an acceleration state is reduced.

In an optional embodiment, the specific implementation process of step S302 includes: step a1 to step A3.

In step a1, a total amount of first gas buffered in the first pipeline at a current sampling time is determined.

Illustratively, the specific implementation process of the step a1 includes steps a11 to a 13.

In step A11, the temperature and pressure at the second location at the current sampling time are obtained.

For example, the temperature and pressure at the second location at the current sampling time may be obtained based on a pressure sensor and a temperature sensor installed at the second location.

In step a12, the volume of the first line is determined.

In step A13, a total amount of a first gas buffered in the first conduit is determined based on the temperature at the second location, the pressure at the second location, and the volume of the first conduit.

Illustratively, it may be based on a preset formulaAnd calculating the total amount of the first gas cached in the first pipeline.

Wherein, P₂Representing the pressure at the second location, V representing the volume of the first line, T₂Representing the temperature at the second location and R representing the ideal gas constant.

In step a2, determining a second total amount of gas buffered in the first pipeline at the last sampling time;

for an exemplary implementation process of step a2, refer to step a11 to step a13, which are not described herein again.

In step a3, a transient intake air amount of the first pipeline is determined according to the total first gas amount, the total second gas amount and a sampling period.

Illustratively, it may be based on a preset formulaAnd calculating the transient intake air quantity of the first pipeline.

Wherein d is_MRepresenting the total amount of the first gas buffered in the first pipeline at the current sampling moment, d_M-1Representing the total amount of the second gas buffered in the first pipeline at the last application time, d_tRepresenting the sampling period, i.e. the time difference between the currently used time and the last sampling time, 3.6 represents the unit conversion constant of g/s (grams/second) to kg/h (kilograms/hour).

In an alternative embodiment, the number of cylinders may be different for different types of engines, with 3, 4, 5, 6, 8, 10, 12 cylinders being common for engines. At present, the single-cylinder transient air inflow of the engine is generally adopted as an important parameter for determining the oil injection quantity of the engine, so that the single-cylinder transient air inflow of the engine is determined based on the transient air inflow of the engine in the embodiment of the application.

Specifically, in the embodiment of the present application, the method further includes: step B1 to step B4.

In step B1, a first speed signal of the engine at the current sampling instant is acquired.

For example, a first speed signal of the engine at a current sampling time may be collected based on a speed sensor.

In step B2, the first speed signal is filtered to obtain a second speed signal.

For example, if the engine is in an acceleration state, the filter constant of the filter signal is determined to be a first filter constant; and if the engine is in a deceleration state, determining the filter constant of the filter signal as a second filter constant.

Illustratively, the first filtering constant is smaller, and the filtering effect on the first rotating speed signal is weaker, so that the difference between the first rotating speed signal and the second rotating speed signal is not large;

the second filter constant is larger, and the filter effect on the first rotating speed signal is stronger, so that the difference between the first rotating speed signal and the second rotating speed signal is larger.

Fig. 4 is a logic diagram of filtering processing of the first rotation speed signal provided by the present application.

In fig. 4, the magnitudes of the first rotation speed signal and the second rotation speed signal are compared, and if the first rotation speed signal is greater than the second rotation speed signal, it is determined that the engine is in an acceleration state, the first filter constant is selected as the filter constant of the filter signal at the next sampling time;

and if the first rotating speed signal is smaller than the second rotating speed signal, determining that the engine is in a deceleration state, and selecting a second filter constant as the filter constant of the filter signal at the next sampling moment.

In step B3, the number of cylinders of the engine is determined;

in step B4, a single cylinder transient intake air quantity of the engine is determined according to the second rotating speed signal, the cylinder number and the transient intake air quantity at the second position.

Illustratively, it may be based on a preset formulaAnd calculating the single-cylinder transient air input of the engine.

Wherein M is_airRepresents the single cylinder transient intake of the engine, K represents the number of engine cylinders, N represents the engine speed, and 33333.3 represents the unit conversion constant from kg/h (kg/h) to mg/hub (mg/cycle).

Fig. 5 is a graph of a first rotation speed signal and a second rotation speed signal provided in the embodiment of the present application. The solid line is the first rotating speed signal, and the dotted line is the second rotating speed signal after filtering processing.

As can be seen from fig. 5, during the acceleration of the engine, the first filter constant is small, the filtering effect on the first rotation speed signal is weak, and the difference between the first rotation speed signal and the second rotation speed signal is not large, so that the first filter constant can be disregarded.

In the process of decelerating the engine, the second filter constant is larger, the filter signal to the first rotating speed signal is stronger, the difference between the first rotating speed signal and the second rotating speed signal is larger, the curve descending speed of the second rotating speed signal is slower, and the second rotating speed signal is larger than the first rotating speed signal at the same moment.

As shown in FIG. 6, a single-cylinder transient intake air quantity curve chart of the engine is provided for the embodiment of the application. Wherein, the solid line is the single-cylinder transient air intake amount determined based on the first rotating speed signal, and the dotted line is the single-cylinder transient air intake amount determined based on the second rotating speed signal.

As can be seen from fig. 6, during the acceleration of the engine, the difference between the two curves is not large in the acceleration stage of fig. 6 because the difference between the first rotation speed signal and the second rotation speed signal in fig. 5 is not large.

During the deceleration process of the engine, the difference between the second rotating speed signal and the first rotating speed signal is larger at the same moment, and the second rotating speed signal is larger than the first rotating speed signal, so that according to the preset formula in the step B4, at the same moment, the single-cylinder transient intake air amount represented by the dotted line is smaller than the single-cylinder transient intake air amount represented by the solid line, and the lowest point (point B) of the single-cylinder transient intake air amount represented by the dotted line is lower than the lowest point (point A) of the single-cylinder transient intake air amount represented by the solid.

Because the point B is lower than the point A and the transient fuel injection quantity of the engine is limited to the single-cylinder transient air input of the engine, the limited starting point of the transient fuel injection quantity of the engine is reduced in the process that a driver steps on the accelerator next time, and the transient smoke intensity is lower.

The method is described in detail in the embodiments disclosed in the present application, and the method of the present application can be implemented by using various types of apparatuses, so that various apparatuses are also disclosed in the present application, and specific embodiments are given below for detailed description.

Fig. 7 is a structural diagram of an implementation manner of a transient intake air amount measuring device according to an embodiment of the present application. The device includes: a first obtaining module 71, a first determining module 72, and a first calculating module 73.

The first obtaining module 71 is configured to obtain a transient intake air amount at a first position at a current sampling time, where the first position is located in a venturi of an engine;

a first determination module 72 for determining a transient intake air amount of the first pipeline between the first position and a second position at a current sampling time, wherein the second position is at an engine intake;

the first calculation module 73 takes the difference between the transient intake air amount at the first position and the transient intake air amount of the first pipeline as the transient intake air amount at the second position.

In an alternative embodiment, the first determining module 72 includes:

the first determining unit is used for determining the total amount of the first gas cached in the first pipeline at the current sampling moment;

the second determining unit is used for determining the total amount of the second gas cached in the first pipeline at the last sampling moment;

the third determining unit is used for determining the transient air inflow of the first pipeline according to the total amount of the first gas, the total amount of the second gas and a sampling period;

the sampling period is the difference between the current sampling time and the last sampling time.

In an optional embodiment, the first determining unit comprises:

a first obtaining subunit, configured to obtain a temperature and a pressure at the second position at a current sampling time;

a first determining subunit for determining a volume of the first line;

a second determining subunit determining a total amount of the first gas buffered in the first pipeline according to the temperature at the second location, the pressure at the second location, and the volume of the first pipeline.

In an optional embodiment, the apparatus further comprises:

the second acquisition module is used for acquiring a first rotating speed signal filtering module of the engine at the current sampling moment and is used for filtering the first rotating speed signal to obtain a second rotating speed signal;

a second determination module to determine a number of cylinders of the engine;

and the second calculation module is used for determining the transient air inflow of a single cylinder of the engine according to the second rotating speed signal, the number of the cylinders and the transient air inflow at the second position.

In an alternative embodiment, the present application provides an electronic device. Referring to fig. 7, a block diagram of an electronic device according to an embodiment of the present application is shown.

The electronic device includes, but is not limited to, components such as an input unit 81, a memory 82, a display unit 83, and a processor 84. Those skilled in the art will appreciate that the configuration shown in fig. 8 is merely an example of an implementation and does not constitute a limitation on electronic devices that may include more or fewer components than those shown, or that certain components may be combined, or that a different arrangement of components may be used.

The following describes each component of the electronic device in detail with reference to fig. 8:

for example, the input unit 81 may be used to obtain an operation instruction for a user to perform the transient intake air amount measurement.

Illustratively, the input unit 81 may include a touch panel 811 and other input devices 812. The touch panel 811, also referred to as a touch screen, may collect a touch operation performed by a user (e.g., an operation performed by the user on the touch panel 811 by using a finger, a stylus, or any other suitable object or accessory), and drive the corresponding connection device according to a preset program (e.g., drive the transient intake air amount measurement function in the processor 84). Alternatively, the touch panel 811 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 84, and can receive and execute commands sent by the processor 84. In addition, the touch panel 811 may be implemented in various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 81 may include other input devices 812 in addition to the touch panel 811. In particular, other input devices 812 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

For example, the memory 82 may be used to store software programs and modules, and the processor 84 executes various functional applications and data processing of the electronic device by operating the software programs and modules stored in the memory 82. The memory 82 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the stored data area may store data created from use of the electronic device (e.g., a volume of the first conduit). Further, the memory 82 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

For example, the display unit 83 may be used to display information input by a user or information provided to the user and various menus of the electronic device. The display unit 83 may include a display panel 831, and the display panel 831 may be configured in the form of an LCD (Liquid crystal display), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch panel 812 may cover the display panel 831, and when the touch panel 812 detects a touch operation thereon or nearby, the touch panel is transmitted to the first processor 84 to determine the type of the touch event, and then the processor 84 provides a corresponding visual output on the display panel 831 according to the type of the touch event.

For example, the touch panel 812 and the display panel 831 may be implemented as two separate components to implement the input and output functions of the electronic device, but in some embodiments, the touch panel 812 and the display panel 831 may be integrated to implement the input and output functions of the electronic device.

The processor 84 is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, and performs various functions of the electronic device and processes data by operating or executing software programs and/or modules stored in the memory 82 and calling data stored in the memory 82, thereby performing overall monitoring of the electronic device. For example, the processor 84 may include one or more processing units; illustratively, the processor 84 may integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a modem processor, which primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 84.

The electronic device also includes a power supply 85 (e.g., a battery) that provides power to the various components, illustratively, the power supply may be logically connected via the power management system processor 84 to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown, the electronic device may further include a camera, a bluetooth module, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi (wireless fidelity) module, a sensor, a network unit, an interface unit, and the like.

The electronic device provides wireless broadband internet access to the user, such as accessing a server, through the network element.

The interface unit is an interface for connecting an external device and the electronic equipment. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the electronic apparatus or may be used to transmit data between the electronic apparatus and the external device.

In the disclosed embodiment, the processor 84 included in the electronic device may be a central processing unit CPU, or an application Specific Integrated circuit asic (application Specific Integrated circuit), or one or more Integrated circuits configured to implement the disclosed embodiment.

The electronic device includes a processor 84 having the following functions: acquiring transient air inflow at a first position at the current sampling time, wherein the first position is located in a venturi tube of an engine;

determining a transient intake air amount of a first pipeline between the first position and a second position at a current sampling moment, wherein the second position is located at an engine air inlet;

and taking the difference between the transient air inflow at the first position and the transient air inflow of the first pipeline as the transient air inflow at the second position.

In an alternative embodiment, a storage medium is provided, which can be directly loaded into an internal memory of a computer, such as the memory 82, and contains software codes, and the computer program can be loaded into and executed by the computer to implement the steps of any of the embodiments of the transient air intake quantity measuring method applied to the electronic device.

Note that the features described in the embodiments in the present specification may be replaced with or combined with each other. For the device or system type embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

It is further 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 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. 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 application. Thus, the present application 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.