Combustion control method and device, storage medium, electronic equipment and vehicle

Abstract

The invention relates to a combustion control method and device, a storage medium, electronic equipment and a vehicle, and relates to the technical field of vehicle control. The method comprises the steps that firstly, the atmospheric pressure of the environment where a range-extending type automobile is located and the temperature of cooling liquid at a water outlet of a range extender are obtained; basic control parameters of oscillation square waves generated by the closed-loop air-fuel ratio corresponding to combustion of the range extender are obtained; a preset compensation coefficient corresponding to the atmospheric pressure and the cooling liquid temperature is inquired; correcting the basic control parameter by using a preset compensation coefficient to obtain a target control parameter; a target closed-loop air-fuel ratio obtained after disturbance is applied according to the target control parameters is obtained; and finally, the fuel injection quantity in the combustion process of the range extender is controlled according to the target closed-loop air-fuel ratio. According to the technical scheme, the combustion mode can be adjusted according to the environment condition of the range extending type automobile, so that the air-fuel ratio after final combustion can be regularly oscillated, the conversion efficiency of a catalyst is effectively improved, and the pollutant discharge amount is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a combustion control method, device, storage medium, electronic equipment, and vehicle. Background Technology

[0002] The air-fuel ratio (AFR) refers to the ratio between the mass of air and the mass of fuel that enter the cylinder for combustion during the operation of an internal combustion engine. It is usually expressed as the ratio of air mass to fuel mass. An ideal air-fuel ratio means just enough to ensure complete combustion of the fuel without producing unburned hydrocarbons and excess oxygen.

[0003] Currently, for range-extended electric vehicles, the combustion control technology of the range extender uses control parameters that generate an oscillating square wave in the closed-loop air-fuel ratio to control the closed-loop air-fuel ratio. The goal is to make the closed-loop air-fuel ratio exhibit an oscillating square wave phenomenon, thereby controlling the injection pulse width and achieving a regular oscillation of the actual combustion air-fuel ratio. This phenomenon of the closed-loop air-fuel ratio exhibiting an oscillating square wave can activate the catalytic efficiency of the catalytic converter, promote the improvement of conversion efficiency, and reduce pollutants such as CO / HC.

[0004] However, with increasing altitude and decreasing atmospheric pressure, this technical solution leads to unstable combustion in the range extender due to the reduced oxygen content in the air and changes in the cooling temperature of the range extender. If the closed-loop air-fuel ratio control method in the relevant technology is still used, it will be impossible to achieve a regular oscillating square wave in the closed-loop air-fuel ratio, which will result in reduced catalytic converter conversion efficiency and increased pollutant emissions. Summary of the Invention

[0005] In view of this, this application provides a combustion control method, device, storage medium, electronic device and vehicle. The main purpose is to improve the technical problem in the current technology that, under conditions of increased altitude and decreased atmospheric pressure, the oxygen content in the air decreases and the cooling temperature of the range extender changes, resulting in unstable combustion of the range extender, making it impossible to achieve a closed-loop air-fuel ratio with regular oscillations, which in turn leads to reduced catalytic converter conversion efficiency and increased pollutant emissions.

[0006] In a first aspect, this application provides a combustion control method, the method comprising:

[0007] The atmospheric pressure of the environment in which the range-extended vehicle is located and the coolant temperature at the outlet of the range extender are obtained, as well as the basic control parameters for generating an oscillating square wave corresponding to the closed-loop air-fuel ratio of the range extender combustion.

[0008] Query the preset compensation coefficients corresponding to the atmospheric pressure and the coolant temperature;

[0009] The target control parameters are obtained by correcting the basic control parameters using the preset compensation coefficient.

[0010] Obtain the target closed-loop air-fuel ratio after applying a disturbance according to the target control parameters;

[0011] The fuel injection quantity during the combustion process of the range extender is controlled according to the target closed-loop air-fuel ratio.

[0012] Secondly, this application provides a combustion control device, comprising:

[0013] The acquisition module is configured to acquire the atmospheric pressure of the environment in which the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, as well as the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave.

[0014] The query module is configured to query a preset compensation coefficient corresponding to the atmospheric pressure and the coolant temperature;

[0015] The acquisition module is configured to correct the basic control parameters using the preset compensation coefficient to obtain the target control parameters;

[0016] The acquisition module is configured to acquire the target closed-loop air-fuel ratio after the perturbation is applied according to the target control parameters;

[0017] The control module is configured to control the amount of fuel injected during the combustion process of the range extender according to the target closed-loop air-fuel ratio.

[0018] Thirdly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the combustion control method described in the first aspect.

[0019] Fourthly, this application provides an electronic device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor executes the computer program to implement the combustion control method described in the first aspect.

[0020] Fifthly, this application provides a vehicle including the device as described in the second aspect or the electronic device as described in the fourth aspect.

[0021] By means of the above technical solution, the combustion control method, device, storage medium, electronic equipment and vehicle provided in this application first obtain the atmospheric pressure of the environment in which the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, as well as the basic control parameters for generating an oscillating square wave corresponding to the closed-loop air-fuel ratio of the range extender combustion; then, look up the preset compensation coefficients corresponding to the atmospheric pressure and coolant temperature; use the preset compensation coefficients to correct the basic control parameters to obtain the target control parameters; then, obtain the target closed-loop air-fuel ratio after applying a disturbance according to the target control parameters; finally, control the fuel injection quantity during the combustion process of the range extender according to the target closed-loop air-fuel ratio. Compared with existing technologies, this application can obtain preset compensation parameters based on atmospheric pressure and coolant temperature, then adjust the basic control parameters according to the preset compensation parameters to obtain target control parameters, and then obtain the target closed-loop air-fuel ratio after applying disturbance according to the target control parameters. Subsequently, the fuel injection quantity in the range extender combustion process is controlled according to the target closed-loop air-fuel ratio. Since the target closed-loop air-fuel ratio generates a regular oscillating square wave, the range-extended vehicle can adjust the combustion mode according to environmental conditions at different altitudes and different range extender cooling temperatures, so that the air-fuel ratio after final combustion can oscillate regularly, effectively improving the catalytic converter conversion efficiency and reducing pollutant emissions, thereby effectively controlling the range extender pollution emission problem in different environments.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic flowchart of a combustion control method provided in an embodiment of this application is shown;

[0026] Figure 2 A schematic flowchart of a combustion control method provided in an embodiment of this application is shown;

[0027] Figure 3 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0028] Figure 4 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0029] Figure 5 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0030] Figure 6 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0031] Figure 7 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0032] Figure 8 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0033] Figure 9 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0034] Figure 10 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0035] Figure 11 A flowchart illustrating an example provided in an embodiment of this application is shown;

[0036] Figure 12 A schematic diagram of a combustion control device provided in an embodiment of this application is shown. Detailed Implementation

[0037] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0038] To address the technical problem of current technologies where, at higher altitudes and lower atmospheric pressures, the oxygen content in the air decreases, and the cooling temperature of the range extender changes, leading to unstable combustion in the range extender and the inability to achieve a regular oscillating square wave in the closed-loop air-fuel ratio, which in turn results in reduced catalytic converter conversion efficiency and increased pollutant emissions, this embodiment provides a combustion control method, such as... Figure 1 As shown, the method includes:

[0039] Step 101: Obtain the atmospheric pressure of the environment where the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, as well as the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave.

[0040] For example, the atmospheric pressure of the environment in which the range-extended vehicle is located can be identified by an atmospheric pressure sensor, and the coolant temperature at the outlet of the range extender can be identified by a water temperature sensor. Then, by querying the basic control parameter table, the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender can be obtained to generate the oscillating square wave. The basic control parameters may include offset, amplitude, frequency, etc. The basic control parameter table may include an offset basic table, an amplitude basic table, a frequency basic table, etc. The offset basic table may include the mapping relationship between the range extender speed and the range extender operating load and the offset basic value; the amplitude basic table may include the mapping relationship between the range extender speed and the range extender operating load and the amplitude basic value; and the frequency basic table may include the mapping relationship between the range extender speed and the range extender operating load and the frequency basic value.

[0041] It should be noted that the method of this embodiment can be applied not only to range-extended electric vehicles, but also to other similar vehicles, such as fuel vehicles and hybrid vehicles. Accordingly, the range extender in this embodiment can be replaced by components with combustion chambers, such as engines and internal combustion engines.

[0042] Step 102: Query the preset compensation coefficients corresponding to atmospheric pressure and coolant temperature.

[0043] In this embodiment, a preset compensation coefficient can be determined based on the current atmospheric pressure and coolant temperature. The preset compensation coefficient can be used to compensate the basic control parameters, so that the air-fuel ratio in the combustion process of the range extender generates an oscillating square wave, realizing air-fuel ratio control under different environmental and water temperature conditions. This allows the range-extended vehicle to adjust the combustion mode according to environmental conditions, improve the catalytic converter conversion efficiency, and reduce pollutant emissions.

[0044] For example, preset compensation coefficients corresponding to atmospheric pressure and coolant temperature can be obtained by querying a preset compensation coefficient table. The preset compensation coefficient table may include an offset compensation coefficient table, an amplitude compensation coefficient table, a frequency compensation coefficient table, etc. The offset compensation coefficient table may include the mapping relationship between atmospheric pressure and coolant temperature and offset compensation coefficients. The amplitude compensation coefficient table may include the mapping relationship between atmospheric pressure and coolant temperature and amplitude compensation coefficients. The frequency compensation coefficient table may include the mapping relationship between atmospheric pressure and coolant temperature and frequency compensation coefficients.

[0045] Step 103: Correct the basic control parameters using preset compensation coefficients to obtain the target control parameters.

[0046] In specific application scenarios, target control parameters can be used to control the closed-loop air-fuel ratio of the range extender, causing it to oscillate regularly, thereby improving the catalytic converter conversion efficiency. For example, the frequency compensation coefficient can be multiplied by the base frequency value to obtain the corrected target frequency value. The target control parameters may include target offset, target amplitude, target frequency, etc.

[0047] Step 104: Obtain the target closed-loop air-fuel ratio after applying the disturbance according to the target control parameters.

[0048] In this embodiment, the target closed-loop air-fuel ratio can be used to represent the desired closed-loop air-fuel ratio of a range-extended electric vehicle under closed-loop fuel control. For example, the stoichiometric air-fuel ratio can be superimposed with a target offset to obtain the target air-fuel ratio, and then oscillated according to the target amplitude and target frequency to obtain the perturbated target closed-loop air-fuel ratio. For gasoline engines, the stoichiometric air-fuel ratio is typically approximately 14.7:1, meaning that the theoretically required mass ratio of air to fuel for complete combustion is 14.7:1.

[0049] Step 105: Control the amount of fuel injected during the combustion process of the range extender according to the target closed-loop air-fuel ratio.

[0050] For example, an oxygen sensor can be used to detect the air content (oxygen content) in the exhaust gas, and then the corresponding fuel injection pulse width can be calculated based on the target closed-loop air-fuel ratio. The amount of fuel injected during the combustion process of the range extender can be controlled by the fuel injection pulse width, so that the closed-loop air-fuel ratio in the actual combustion process oscillates regularly according to the target closed-loop air-fuel ratio, maintaining stable combustion of the range extender, improving the catalytic converter conversion efficiency, and reducing pollutant emissions.

[0051] Compared with existing technologies, this embodiment can obtain preset compensation parameters based on atmospheric pressure and coolant temperature, then adjust the basic control parameters according to the preset compensation parameters to obtain target control parameters, and then obtain the target closed-loop air-fuel ratio after applying disturbance according to the target control parameters. Subsequently, the fuel injection quantity in the range extender combustion process is controlled according to the target closed-loop air-fuel ratio. Since the target closed-loop air-fuel ratio will generate regular oscillating square waves, the range-extended vehicle can adjust the combustion mode according to environmental conditions at different altitudes and different range extender cooling temperatures, so that the air-fuel ratio after final combustion can oscillate regularly, effectively improving the catalytic converter conversion efficiency and reducing pollutant emissions, thereby effectively controlling the range extender pollution emission problem in different environments.

[0052] Furthermore, as a refinement and extension of the above embodiments, in order to fully illustrate the specific implementation process of the method in this embodiment, this embodiment provides the following: Figure 2 The specific method shown includes the following steps:

[0053] Step 201: Obtain the atmospheric pressure of the environment where the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, as well as the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave.

[0054] Optionally, before step 201, the method may further include: determining whether the range extender is in a fuel closed-loop control state; if the range extender is in a fuel closed-loop control state, then acquiring atmospheric pressure and coolant temperature, as well as basic control parameters.

[0055] In this embodiment, the operating status of the range extender can be monitored to determine whether it is in a fuel closed-loop control state. If the range extender is in a fuel closed-loop control state, atmospheric pressure, coolant temperature, and basic control parameters can be obtained. If the range extender is not in a fuel closed-loop control state, it is not necessary to obtain atmospheric pressure, coolant temperature, and basic control parameters. The range extender status can include fuel closed-loop control state, fuel open-loop control state, etc.

[0056] Optionally, the basic control parameters for the closed-loop air-fuel ratio corresponding to the range extender combustion to generate the oscillating square wave can be obtained. Specifically, this may include: obtaining the speed and operating load of the range extender; querying the basic values ​​of the offset, and / or the basic values ​​of the amplitude, and / or the basic values ​​of the frequency corresponding to the speed and operating load.

[0057] For example, the speed and operating load of the range extender can be obtained first, and then by querying... Figure 3 The offset base table shown provides the base offset values ​​corresponding to the rotational speed and operating load, and / or can be obtained by querying, for example... Figure 4 The amplitude baseline table shown provides the baseline amplitude values ​​corresponding to the rotational speed and operating load, and / or can be obtained by querying, for example... Figure 5 The frequency baseline table shown provides the frequency baseline values ​​corresponding to the rotational speed and operating load.

[0058] For example, based on the current speed and operating load of the range extender, the control logic looks up the tables to obtain the basic values ​​of offset = 0.1, amplitude = 0.2, and frequency = 3.

[0059] Step 202: Query the preset compensation coefficients corresponding to atmospheric pressure and coolant temperature.

[0060] The preset compensation coefficient may include at least one of the following: offset compensation coefficient, amplitude compensation coefficient, and frequency compensation coefficient. In this embodiment, it can be obtained by querying... Figure 6 The offset compensation coefficient table shown provides the offset compensation coefficients corresponding to atmospheric pressure and coolant temperature, and / or can be obtained by querying... Figure 7 The amplitude compensation coefficient table shown provides the amplitude compensation coefficients corresponding to atmospheric pressure and coolant temperature, and / or can be obtained by querying... Figure 8 The frequency compensation coefficient table shown provides the frequency compensation coefficients corresponding to atmospheric pressure and coolant temperature.

[0061] For example, based on atmospheric pressure and coolant temperature, the control logic looks up tables to obtain the offset compensation coefficient = 1.1, amplitude compensation coefficient = 0.9, and frequency compensation coefficient = 1.1.

[0062] Step 203: Correct the basic control parameters using preset compensation coefficients to obtain the target control parameters.

[0063] Optionally, step 203 may include: correcting the basic offset value in the basic control parameters using an offset compensation coefficient to obtain a target offset; and / or, correcting the basic amplitude value in the basic control parameters using an amplitude compensation coefficient to obtain a target offset; and / or, correcting the basic frequency value in the basic control parameters using a frequency compensation coefficient to obtain a target frequency.

[0064] Optionally, the offset base value in the basic control parameters can be corrected using the offset compensation coefficient to obtain the target offset. This can be achieved by multiplying the offset base value by the offset compensation coefficient to obtain the target offset.

[0065] For example, multiplying the base offset value of 0.1 by the offset compensation coefficient of 1.1 yields the target offset of 0.11.

[0066] Optionally, the amplitude base value in the basic control parameters can be corrected using the amplitude compensation coefficient to obtain the target offset. This can be achieved by multiplying the amplitude base value by the amplitude compensation coefficient to obtain the target amplitude.

[0067] For example, multiplying the base amplitude value of 0.2 by the amplitude compensation coefficient of 0.9 yields a target amplitude of 0.18.

[0068] Optionally, the frequency baseline value in the basic control parameters can be corrected using a frequency compensation coefficient to obtain the target frequency. This can be achieved by multiplying the frequency baseline value by the frequency compensation coefficient to obtain the target frequency.

[0069] For example, multiplying the base frequency value of 3 by the frequency compensation coefficient of 1.1 yields the target frequency of 3.3.

[0070] Step 204: Adjust the target offset and / or target amplitude and / or target frequency based on the stoichiometric air-fuel ratio to obtain the target closed-loop air-fuel ratio that generates an oscillating square wave.

[0071] For example, such as Figure 9 As shown, the closed-loop air-fuel ratio generating an oscillating square wave is illustrated based on the target offset, target amplitude, and target frequency. Then, based on a stoichiometric air-fuel ratio of 14.6, the target offset is increased by 0.11, and a square wave perturbation is applied according to the target amplitude of 0.18 and the target frequency of 3.3. Figure 10As shown, the target closed-loop air-fuel ratio (desired closed-loop air-fuel ratio) capable of generating an oscillating square wave is obtained. The desired closed-loop air-fuel ratio after applying the square wave perturbation is between (14.71-0.18) and (14.71+0.18), and oscillates regularly at the target frequency of 3.3. Specifically, the desired closed-loop air-fuel ratio = 14.6 + 0.1 * 1.1 = 14.71.

[0072] Step 205: Calculate the injection pulse width corresponding to the target closed-loop air-fuel ratio.

[0073] In this embodiment, when the range extender is in the closed-loop fuel control state, the oxygen content in the exhaust gas can be detected by an oxygen sensor installed on the engine exhaust pipe. Then, based on the target closed-loop air-fuel ratio and oxygen content, the corresponding injection pulse width is calculated to ensure that the air-fuel mixture can achieve the best combustion efficiency and the least emissions in the combustion chamber.

[0074] Step 206: Control the amount of fuel injected during the combustion process of the range extender according to the fuel injection duration corresponding to the fuel injection pulse width.

[0075] In this embodiment, the injection pulse width can be used to control the injection duration, which in turn controls the amount of fuel injected into the cylinder. This method allows the air-fuel ratio during actual combustion to fluctuate according to the oscillating square wave of the target closed-loop air-fuel ratio, achieving efficient, complete, and stable combustion, reducing pollutant emissions, and optimizing the combustion process. For example, a larger injection pulse width means a longer injection duration, resulting in more fuel injected into the cylinder, a lower air-fuel ratio, and a richer air-fuel mixture in the engine.

[0076] For example, such as Figure 11 As shown, the combustion control system can be used to execute the following process:

[0077] (1) Start the range extender and make it run normally;

[0078] (2) The system determines whether the current range extender is in the fuel closed-loop control state. If the determination is true, it enters process (3). If the determination is no, the process ends.

[0079] (3) The system is currently in a fuel closed-loop state. Obtain the basic values ​​of offset / amplitude / frequency.

[0080] (4) The system determines whether the atmospheric pressure and coolant temperature signals are real and valid. If the signal is real, the system proceeds to process (5). If the signal is not real, the process ends.

[0081] (5) The system obtains the offset / amplitude / frequency compensation coefficients;

[0082] (6) The system calculates and outputs the final offset / amplitude / frequency;

[0083] (7) The system outputs the closed-loop air-fuel ratio after the final disturbance is applied;

[0084] (8) The system calculates the injection pulse width based on the final perturbation of the closed-loop air-fuel ratio, realizes the regular oscillation of the injection quantity, and finally realizes the oscillation of the air-fuel ratio after combustion, so as to improve the conversion efficiency of the catalyst.

[0085] Compared with existing technologies, this embodiment first obtains the atmospheric pressure and coolant temperature at the range extender outlet of the range extender's environment, as well as the basic control parameters for generating the oscillating square wave of the closed-loop air-fuel ratio corresponding to the range extender's combustion. Then, it queries the preset compensation coefficients corresponding to the atmospheric pressure and coolant temperature; uses these preset compensation coefficients to correct the basic control parameters, obtaining the target control parameters; next, it obtains the target closed-loop air-fuel ratio after applying a disturbance according to the target control parameters; finally, it controls the fuel injection quantity during the range extender's combustion process according to the target closed-loop air-fuel ratio. By applying the technical solution of this embodiment, this embodiment can adjust the target offset, and / or target amplitude, and / or target frequency based on the stoichiometric air-fuel ratio to obtain the target closed-loop air-fuel ratio that generates the oscillating square wave. Then, it controls the fuel injection quantity during the range extender's combustion process according to the fuel injection pulse width corresponding to the target closed-loop air-fuel ratio, so that the air-fuel ratio in the actual combustion process fluctuates according to the oscillating square wave of the target closed-loop air-fuel ratio, thereby achieving efficient, complete, and stable combustion, reducing pollutant emissions, and optimizing the combustion process.

[0086] Further, as Figure 2 The specific implementation of the method shown in this embodiment provides a combustion control device, such as... Figure 12 As shown, the device includes: an acquisition module 31, a query module 32, and a control module 33.

[0087] The acquisition module 31 is configured to acquire the atmospheric pressure of the environment in which the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, as well as the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave.

[0088] The query module 32 is configured to query preset compensation coefficients corresponding to atmospheric pressure and coolant temperature;

[0089] The acquisition module 31 is configured to correct the basic control parameters using a preset compensation coefficient to obtain the target control parameters;

[0090] The acquisition module 31 is configured to acquire the target closed-loop air-fuel ratio after the disturbance is applied according to the target control parameters;

[0091] The control module 33 is configured to control the amount of fuel injected during the combustion process of the range extender according to the target closed-loop air-fuel ratio.

[0092] In some embodiments, the preset compensation coefficient includes at least one of offset compensation coefficient, amplitude compensation coefficient, and frequency compensation coefficient. The acquisition module 31 is specifically configured to use the offset compensation coefficient to correct the basic offset value in the basic control parameters to obtain the target offset; and / or use the amplitude compensation coefficient to correct the basic amplitude value in the basic control parameters to obtain the target offset; and / or use the frequency compensation coefficient to correct the basic frequency value in the basic control parameters to obtain the target frequency.

[0093] In some embodiments, the acquisition module 31 is specifically configured to multiply the basic offset value by the offset compensation coefficient to obtain the target offset; multiply the basic amplitude value by the amplitude compensation coefficient to obtain the target amplitude; and multiply the basic frequency value by the frequency compensation coefficient to obtain the target frequency.

[0094] In some embodiments, the acquisition module 31 is specifically configured to acquire the speed and operating load of the range extender; and query the offset base value, and / or amplitude base value, and / or frequency base value corresponding to the speed and operating load.

[0095] In some embodiments, the acquisition module 31 is specifically configured to adjust the target offset, and / or target amplitude, and / or target frequency based on the stoichiometric air-fuel ratio to obtain the target closed-loop air-fuel ratio that generates an oscillating square wave.

[0096] In some embodiments, the control module 33 is specifically configured to calculate the injection pulse width corresponding to the target closed-loop air-fuel ratio and control the injection quantity during the combustion process of the range extender according to the injection duration corresponding to the injection pulse width.

[0097] In some embodiments, the acquisition module 31 is further configured to determine whether the range extender is in a fuel closed-loop control state; if the range extender is in a fuel closed-loop control state, then atmospheric pressure and coolant temperature, as well as basic control parameters, are acquired.

[0098] It should be noted that other corresponding descriptions of the functional units involved in the combustion control device provided in this embodiment can be found in [reference needed]. Figure 1 and Figure 2 The corresponding description in will not be repeated here.

[0099] Based on the above Figure 1 and Figure 2 Accordingly, this embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described method. Figure 1 and Figure 2 The method shown.

[0100] Based on this understanding, the technical solution of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as CD-ROM, USB flash drive, mobile hard drive, etc.) and includes several instructions to cause a computer device (such as personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of this application.

[0101] Based on the above Figure 1 and Figure 2 The method shown, and Figure 12 To achieve the above objectives, this application also provides an electronic device, which can be configured on the end side of a vehicle (such as a new energy vehicle) or a server side, as shown in the virtual device embodiment. The device includes a storage medium and a processor; the storage medium stores a computer program; the processor executes the computer program to achieve the above-described objectives. Figure 1 and Figure 2 The method shown.

[0102] Optionally, the aforementioned physical devices may also include a user interface, a network interface, a camera, radio frequency (RF) circuitry, sensors, audio circuitry, a Wi-Fi module, etc. The user interface may include a display screen, input units such as a keyboard, etc., and optional user interfaces may also include USB interfaces, card reader interfaces, etc. The network interface may optionally include standard wired interfaces, wireless interfaces (such as Wi-Fi interfaces), etc.

[0103] Those skilled in the art will understand that the physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or combine certain components, or have different component arrangements.

[0104] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the aforementioned physical device, supporting the operation of information processing programs and other software and / or programs. The network communication module is used to enable communication between the various components within the storage medium, as well as communication with other hardware and software in the information processing physical device.

[0105] Furthermore, based on the above... Figure 1 and Figure 2 The method shown, and Figure 12 The virtual device embodiment shown, as well as the above-described electronic device embodiment, this embodiment also provides a vehicle, such as... Figure 1 The combustion control method shown, or the aforementioned electronic equipment.

[0106] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms, or it can be implemented by hardware. Compared with the existing technology, this embodiment first obtains the atmospheric pressure and coolant temperature at the outlet of the range extender of the range-extended vehicle, and obtains the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave; then it queries the preset compensation coefficient corresponding to the atmospheric pressure and coolant temperature; it uses the preset compensation coefficient to correct the basic control parameters to obtain the target control parameters; then it obtains the target closed-loop air-fuel ratio after applying disturbance according to the target control parameters; finally, it controls the fuel injection quantity in the combustion process of the range extender according to the target closed-loop air-fuel ratio. By applying the technical solution of this embodiment, this embodiment can obtain the preset compensation parameters according to the atmospheric pressure and coolant temperature, then adjust the basic control parameters according to the preset compensation parameters to obtain the target control parameters, and then control the target closed-loop air-fuel ratio according to the target control parameters to generate a regular oscillating square wave, so that the range extender adjusts the combustion mode according to environmental conditions, maintains stable combustion of the range extender, improves the catalytic converter conversion efficiency, and reduces pollutant emissions.

[0107] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0108] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A combustion control method, characterized in that, include: The atmospheric pressure of the environment in which the range-extended vehicle is located and the coolant temperature at the outlet of the range extender are obtained, as well as the basic control parameters for generating an oscillating square wave corresponding to the closed-loop air-fuel ratio of the range extender combustion. Query the preset compensation coefficients corresponding to the atmospheric pressure and the coolant temperature; The target control parameters are obtained by correcting the basic control parameters using the preset compensation coefficient. Obtain the target closed-loop air-fuel ratio after applying a disturbance according to the target control parameters; The fuel injection quantity during the combustion process of the range extender is controlled according to the target closed-loop air-fuel ratio.

2. The method according to claim 1, characterized in that, The preset compensation coefficient includes at least one of offset compensation coefficient, amplitude compensation coefficient, and frequency compensation coefficient; The step of correcting the basic control parameters using the preset compensation coefficient to obtain the target control parameters includes: The offset compensation coefficient is used to correct the base offset value in the basic control parameters to obtain the target offset; and / or, The amplitude compensation coefficient is used to correct the basic amplitude value in the basic control parameters to obtain the target offset; and / or, The target frequency is obtained by correcting the basic frequency value in the basic control parameters using the frequency compensation coefficient.

3. The method according to claim 2, characterized in that, The basic control parameters for obtaining the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave include: Obtain the speed and operating load of the range extender; Query the baseline value of the offset, and / or the baseline value of the amplitude, and / or the baseline value of the frequency corresponding to the rotational speed and the operating load.

4. The method according to claim 2, characterized in that, The step of obtaining the target closed-loop air-fuel ratio after applying a disturbance according to the target control parameters includes: The target offset, and / or the target amplitude, and / or the target frequency are adjusted based on the stoichiometric air-fuel ratio to obtain the target closed-loop air-fuel ratio that generates an oscillating square wave.

5. The method according to claim 1, characterized in that, The step of controlling the fuel injection quantity during the combustion process of the range extender according to the target closed-loop air-fuel ratio includes: Calculate the injection pulse width corresponding to the target closed-loop air-fuel ratio; The amount of fuel injected during the combustion process of the range extender is controlled according to the fuel injection duration corresponding to the fuel injection pulse width.

6. The method according to claim 1, characterized in that, Before acquiring the atmospheric pressure of the environment where the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, and before acquiring the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave, the method further includes: Determine whether the range extender is in a fuel closed-loop control state; The acquisition of atmospheric pressure and coolant temperature at the range extender outlet of the range extender, as well as the acquisition of basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave, includes: If the range extender is in the fuel closed-loop control state, then the atmospheric pressure, the coolant temperature, and the basic control parameters are acquired.

7. A combustion control device, characterized in that, include: The acquisition module is configured to acquire the atmospheric pressure of the environment in which the range-extended vehicle is located and the coolant temperature at the outlet of the range extender, as well as the basic control parameters for the closed-loop air-fuel ratio corresponding to the combustion of the range extender to generate an oscillating square wave. The parsing module is configured to query a preset compensation coefficient corresponding to the atmospheric pressure and the coolant temperature; The generation module is configured to correct the basic control parameters using the preset compensation coefficient to obtain the target control parameters; The display module is configured to acquire the target closed-loop air-fuel ratio after a disturbance is applied according to the target control parameters.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method of any one of claims 1 to 6.

9. An electronic device, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 6.

10. A vehicle, characterized in that, include: The apparatus of claim 7, or the electronic device of claim 9.

Images