Combustion control method of engine, vehicle and storage medium

Abstract

The invention discloses a combustion control method of an engine, a vehicle and a storage medium. The method comprises the steps that the current working condition of an engine and current fuel attribute information of current fuel are obtained; on the basis of the current working condition and the current fuel attribute information, the waste gas recirculation rate of a waste gas recirculation system corresponding to the engine is determined, and the waste gas recirculation system is used for representing a system for inputting mixed gas into a combustion chamber; the mixed gas is obtained by mixing first gas discharged by the engine combusting the current fuel and second gas in the current environment, and the waste gas recirculation rate is used for representing the ratio of the first gas to the mixed gas; determining valve control parameters of a valve control system corresponding to the engine based on the current working condition and the current fuel attribute information; and based on the waste recycling rate and the valve control parameters, combustion control is conducted on the engine, and a control result is obtained. The technical problem that in the related technology, the combustion efficiency of an engine is low is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to a combustion control method of an engine, a vehicle and a storage medium. BACKGROUND

[0002] Under the increasingly stringent environmental protection requirements and the continuously improved fuel economy expectations, the internal combustion engine technology is facing numerous challenges. The traditional engine control system, although to a certain extent, can promote the improvement of combustion efficiency, its limitations are increasingly highlighted. Especially in dealing with complex and variable working conditions, these systems cannot flexibly respond to the subtle changes of the engine operating environment due to the over-reliance on fixed or preset control parameters, thereby leading to the low combustion efficiency of the engine in related technologies.

[0003] At present, no effective solution has been proposed for the above problems. SUMMARY

[0004] The embodiments of the present application provide a combustion control method of an engine, a vehicle and a storage medium, to at least solve the technical problem of low combustion efficiency of the engine in related technologies.

[0005] According to an aspect of the embodiments of the present application, a combustion control method of an engine is provided, comprising: obtaining a current working condition of the engine and current fuel attribute information of a current fuel, wherein the engine generates power by burning the current fuel; determining a waste recirculation rate of a waste recirculation system corresponding to the engine based on the current working condition and the current fuel attribute information, wherein the waste recirculation system is used to represent a system for inputting a mixed gas into a combustion chamber, the mixed gas is obtained by mixing a first gas discharged by the engine burning the current fuel and a second gas in the current environment, and the waste recirculation rate is used to represent a ratio of the first gas to the mixed gas; determining a valve control parameter of a valve control system corresponding to the engine based on the current working condition and the current fuel attribute information, wherein the valve control system is used to control opening or closing of an internal combustion engine valve corresponding to the engine; and performing combustion control on the engine based on the waste recirculation rate and the valve control parameter to obtain a control result, wherein the control result is used to represent whether the combustion performance of the engine reaches a target performance index.

[0006] Further, determining the waste recirculation rate of the waste recirculation system corresponding to the engine based on the current working condition and the current fuel attribute information comprises: determining a current speed and a current load of the engine based on the current working condition; determining a current fuel heat value of the engine based on the current fuel attribute information; mapping the current speed, the current load and the current fuel heat value on a preset three-dimensional coordinate system to obtain a target three-dimensional coordinate point; and determining the waste recirculation rate corresponding to the preset waste recirculation rate of the target three-dimensional coordinate point as the waste recirculation rate.

[0007] Further, the current speed, the current load and the current fuel heat value are mapped on a preset three-dimensional coordinate system to obtain a target three-dimensional coordinate point, including: the current speed, the current load and the current fuel heat value are mapped on a preset three-dimensional coordinate system to obtain a first coordinate point, a second coordinate point and a third coordinate point, wherein the first coordinate point is a coordinate point of the current speed mapped on the first axis of the preset three-dimensional coordinate system, the second coordinate point is a coordinate point of the current load mapped on the second axis of the preset three-dimensional coordinate system, and the third coordinate point is a coordinate point of the current fuel heat value mapped on the third axis of the preset three-dimensional coordinate system; and the target three-dimensional coordinate point is constructed based on the first coordinate point, the second coordinate point and the third coordinate point.

[0008] Further, based on the current working condition and the current fuel attribute information, the valve control parameter of the engine corresponding to the valve control system is determined, including: the current working condition and the current fuel attribute are combined to obtain a combination entry; the combination entry is detected based on the inspection strategy table to obtain a detection result, wherein the detection result is used to indicate whether the first target entry matching the combination entry is contained in the inspection strategy table, the inspection strategy table contains a plurality of entries, and different entries are obtained by combining different working conditions and different fuel attributes; in response to the detection result being that the first target entry is contained in the inspection strategy table, the first preset valve control parameter corresponding to the first target entry is determined based on the inspection strategy table, and the first preset valve control parameter is determined as the valve control parameter.

[0009] Further, the method further includes: in response to the detection result being that the first target entry is not contained in the inspection strategy table, the plurality of entries and the combination entry are matched to obtain at least one second target entry, wherein the at least one second target entry is at least one entry in the plurality of entries which has a higher matching degree with the combination entry than other entries; the second preset valve control parameter corresponding to the at least one second target entry is determined based on the inspection strategy table; and the second preset valve control parameter corresponding to the at least one second target entry is interpolated to obtain the valve control parameter.

[0010] Further, the matching of the plurality of entries and the combination entry to obtain at least one second target entry includes: the matching of the plurality of entries and the combination entry is performed to obtain the matching degrees of the plurality of entries; the matching degrees of the plurality of entries are sorted to obtain a sorting result; and based on the sorting result, at least one second target entry in the plurality of entries is determined.

[0011] Further, based on the waste recirculation rate and the valve control parameter, the engine is controlled to combust, and a control result is obtained, including: converting the waste recirculation rate to obtain a first control parameter corresponding to the exhaust valve of the first gas and a second control parameter corresponding to the intake valve of the second gas; controlling the exhaust valve based on the first control parameter, controlling the intake valve based on the second control parameter, and controlling the internal combustion engine valve based on the valve control parameter to obtain the control result.

[0012] Further, the method further includes: obtaining an operating parameter of the engine; and inputting the operating parameter and the current fuel attribute information into a working condition recognition model to recognize the working condition of the engine by using the working condition recognition model to obtain a current working condition.

[0013] According to another aspect of the embodiments of the present application, an engine combustion control device is also provided, including: an obtaining module configured to obtain a current working condition of an engine and current fuel attribute information of a current fuel, wherein the engine generates power by combusting the current fuel; a first determining module configured to determine a waste recirculation rate of a waste recirculation system corresponding to the engine based on the current working condition and the current fuel attribute information, wherein the waste recirculation system is configured to input a mixed gas into a combustion chamber, the mixed gas is obtained by mixing a first gas exhausted by the engine combusting the current fuel and a second gas in a current environment, and the waste recirculation rate is configured to represent a ratio of the first gas to the mixed gas; a second determining module configured to determine a valve control parameter of a valve control system corresponding to the engine based on the current working condition and the current fuel attribute information, wherein the valve control system is configured to control opening or closing of an internal combustion engine valve of the engine; and a control module configured to control the engine to combust based on the waste recirculation rate and the valve control parameter to obtain a control result, wherein the control result is configured to represent whether a combustion performance of the engine reaches a target performance index.

[0014] According to another aspect of the embodiments of the present application, a vehicle is also provided, including: a memory storing an executable program; and a processor configured to run the program, wherein the program is executed to implement the method in each of the embodiments of the present application when the program is run.

[0015] According to another aspect of the embodiments of the present application, a computer readable storage medium is also provided, including a stored executable program, wherein the device where the computer readable storage medium is located is controlled to implement the method in each of the embodiments of the present application when the executable program is run.

[0016] According to another aspect of the embodiments of the present application, a computer program product is also provided, including a computer program, wherein the computer program is executed by a processor to implement the method in each of the embodiments of the present application.

[0017] According to another aspect of the embodiments of the present application, a computer program product is also provided, comprising a non-volatile computer readable storage medium storing a computer program, which, when executed by a processor, implements the method in any of the embodiments of the present application.

[0018] According to another aspect of the embodiments of the present application, a computer program is also provided, which, when executed by a processor, implements the method in any of the embodiments of the present application.

[0019] In the embodiments of the present application, first, the current working condition of the engine and the current fuel attribute information of the current fuel are acquired; then, based on the current working condition and the current fuel attribute information, the exhaust recirculation rate of the exhaust recirculation system corresponding to the engine is determined; secondly, based on the current working condition and the current fuel attribute information, the valve control parameter of the valve control system corresponding to the engine is determined; finally, based on the exhaust recirculation rate and the valve control parameter, the combustion control of the engine is performed to obtain a control result. By acquiring the current working condition and the current fuel attribute information, the present application can capture the subtle changes of the engine under different working conditions and the direct influence of the fuel attribute on the combustion process. Then, based on the current working condition and the current fuel attribute information, the exhaust recirculation rate of the exhaust recirculation system and the valve control parameter of the valve control system are respectively determined, so as to obtain the exhaust recirculation rate and the valve control parameter that are most matched with the current working condition of the engine and the current fuel attribute information, so that the engine control system can more flexibly adapt to the changes of the engine operating environment, while also ensuring that the combustion process can maintain a balance between high efficiency and environmental protection under any condition, thereby achieving the technical purpose of improving the fuel combustion control and the overall performance of the engine, realizing the technical effects of enhancing the adaptability of the engine to complex operating conditions, improving the combustion efficiency and reducing pollutant emissions, and further solving the technical problem of low combustion efficiency of the engine in the related art. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0021] Figure 1 is a flow chart of a combustion control method of an engine according to an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of a combustion control device of an engine according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts should fall within the scope of the present application.

[0024] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] According to an embodiment of the present application, an embodiment of a combustion control method of an engine is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical sequence is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0026] Figure 1 is a flowchart of a combustion control method of an engine according to an embodiment of the present application, as shown in Figure 1 The method comprises the following steps:

[0027] Step S102, obtaining the current working condition of the engine and the current fuel attribute information of the current fuel, wherein the engine generates power by burning the current fuel.

[0028] The above-mentioned engine can refer to an important component for providing power for a vehicle. Engine types are mainly divided into two categories: internal combustion engine and electric motor. Among them, internal combustion engine is divided into gasoline engine, diesel engine, gas engine, etc. according to different fuels; electric motor is divided into direct current motor, alternating current motor, permanent magnet synchronous motor, etc. according to different working principles and structures. The specific engine type needs to be determined according to the vehicle system design, which is not limited here. The engine can be used to convert the chemical energy of fuel into kinetic energy, thereby pushing the vehicle forward, and also affects the acceleration, speed, fuel efficiency and emission performance of the vehicle.

[0029] The current operating condition can refer to the running state of the engine at a certain moment, and the type of the current operating condition can include but is not limited to a steady state condition, an acceleration condition, a deceleration condition, an idle condition, etc. The specific current operating condition needs to be determined according to the actual running state, which is not limited here. The current operating condition can be used to help the engine electronic control unit (ECU) to adjust the running parameters of the engine in real time to achieve better performance, efficiency and emission standards.

[0030] The current fuel property information can refer to the physical and chemical properties of the fuel. The current fuel property information can include but is not limited to octane number, vapor pressure, density, cetane number, sulfur content, viscosity, etc. The specific current fuel property information needs to be determined according to the actual fuel type, which is not limited here. The current fuel property information affects the efficiency and emissions of the engine combustion process. For example, high-octane gasoline helps to improve the anti-knock performance of the engine, and low-sulfur diesel helps to reduce exhaust emissions. Therefore, by understanding the current fuel property information, control parameters can be adjusted to adapt to the characteristics of different fuels and improve engine performance.

[0031] In an optional embodiment, the engine electronic control unit collects real-time data of the engine operating state and fuel properties through various sensors such as speed sensors, load sensors, temperature sensors, pressure sensors, and fuel quality sensors. These data include the speed, load, intake temperature, cylinder pressure of the engine, and key attributes such as the type, octane number, and density of the fuel. Then, with the help of this information, the engine electronic control unit accurately determines the current operating condition of the engine and determines the current fuel property information of the current fuel, so as to adjust the combustion control strategy based on the above information. By monitoring and responding to the running state of the engine and its fuel characteristics in real time, the combustion efficiency can be significantly improved, the emissions can be reduced, the adaptability can be enhanced, and the engine life can be prolonged, providing users with more efficient, more environmentally friendly and more stable driving experience.

[0032] In step S104, based on the current operating condition and the current fuel property information, a waste recirculation rate of the engine corresponding to a waste recirculation system is determined, wherein the waste recirculation system is used to represent a system for inputting mixed gas to the combustion chamber, the mixed gas is mixed based on the first gas discharged by the engine burning the current fuel and the second gas in the current environment, and the waste recirculation rate is used to represent the proportion of the first gas to the mixed gas.

[0033] The exhaust gas recirculation system (EGR system) can refer to an engine emission control technology that re-introduces part of the exhaust gas emitted by the engine into the intake system to recirculate into the combustion chamber to reduce the combustion temperature and reduce the generation of nitrogen oxides (NOx). The EGR system can include but is not limited to internal EGR, which is achieved by changing valve timing, and external EGR, which directly introduces exhaust gas into the intake manifold through a dedicated pipe and valve. The specific exhaust gas recirculation system needs to be determined according to actual needs, which is not limited here. The EGR system can effectively reduce the emission of NOx by reducing the oxygen concentration and combustion temperature in the combustion chamber, and also helps to improve the fuel economy of the engine.

[0034] The exhaust gas recirculation rate (EGR rate) can refer to the ratio of the amount of exhaust gas recirculated back to the combustion chamber to the total amount of intake air (fresh air plus recirculated exhaust gas). The EGR rate needs to be dynamically adjusted according to the type of engine, operating conditions, and fuel properties. Here, it is not limited, and by adjusting the EGR rate, the oxygen concentration and combustion temperature in the combustion chamber can be accurately controlled, thereby improving the combustion process, reducing the generation of NOx, and maintaining the performance of the engine unaffected.

[0035] The mixed gas can refer to a gas formed by mixing exhaust gas (first gas) generated during the engine combustion process with fresh air (second gas) in the current environment in a certain proportion.

[0036] The combustion chamber can refer to the place where the fuel and air mixture inside the engine burns. The design of the combustion chamber directly affects the combustion efficiency, performance, and emissions of the engine. An efficient combustion chamber design can ensure the combustion efficiency of the fuel, improve the thermal efficiency of the engine, and control the generation of harmful emissions.

[0037] The first gas can refer to the exhaust gas generated during the combustion process of the engine. The first gas can include but is not limited to carbon dioxide, water vapor, incompletely combusted hydrocarbons, nitrogen oxides, etc. The specific first gas needs to be determined according to the actual combustion situation, which is not limited here. Circulating part of the first gas back to the intake system can be used to reduce the combustion temperature and reduce the generation of NOx to achieve emission control.

[0038] The second gas can refer to fresh air taken in from the atmosphere. The second gas can be used to provide oxygen for combustion and is an indispensable part of the combustion process. At the same time, the second gas can be used to mix with the first gas to provide oxygen for continued combustion, and also dilutes the exhaust gas to reduce the combustion temperature and oxygen concentration, thereby reducing the generation of NOx.

[0039] In an alternative embodiment, the engine electronic control unit calculates a determined exhaust gas recirculation rate (EGR rate) of the engine corresponding to the exhaust gas recirculation system based on the current operating condition and the current fuel property information, which determines how much exhaust gas will be mixed with fresh air before being fed into the combustion chamber again; then, the first gas from the engine and the second gas in the current environment are mixed at the calculated exhaust gas recirculation rate to form a mixed gas, which is introduced into the combustion chamber to participate in the new combustion cycle; finally, the ECU further improves the combustion strategy in the combustion chamber according to the composition and proportion of the mixed gas, such as adjusting valve timing, fuel injection amount and ignition time, etc., to ensure efficient and environmentally friendly combustion process. The adjustment of EGR rate and other combustion parameters according to real-time operating conditions and fuel properties in the above process can maintain the better performance and response speed of the engine under various operating conditions, and at the same time, by adjusting the EGR rate, the combustion temperature can be significantly reduced, effectively reducing the generation of harmful substances such as nitrogen oxides, thereby improving the emission performance of the engine.

[0040] For example, assume that the vehicle is traveling at a constant speed of 80 km / h, at which time the engine speed is 2000 RPM and the load is 50%. The ECU obtains these parameters in real time through the speed sensor, throttle position sensor, intake temperature sensor and other sensors to determine the current operating condition of the engine, and obtains the current fuel property information of the current fuel through the fuel quality sensor. Then, the ECU queries the EGR rate preset three-dimensional coordinate system stored in its database according to the collected current operating condition of the engine and current fuel property information. This preset three-dimensional coordinate system is obtained from laboratory tests and simulation data, and contains matched EGR rate settings under different operating conditions and fuel characteristics. Based on the above query process, it is determined that the most effective EGR rate at this time is 15%. This means that 15% of the mixed gas should come from the exhaust gas after combustion (first gas), and 85% from the fresh air in the environment (second gas). The above process dynamically adjusts the exhaust gas recirculation rate of the exhaust gas recirculation system by using the current operating condition and the current fuel property information to achieve the purpose of improving combustion efficiency, reducing emissions and improving fuel economy. The numerical values in the above process are only examples and are not limited here.

[0041] In step S106, the valve control parameter of the engine corresponding to the valve control system is determined based on the current operating condition and the current fuel property information, wherein the valve control system is used to control the opening or closing of the engine corresponding internal combustion engine valve.

[0042] The valve control system can refer to a technology for controlling the opening timing, duration and lift amplitude of the intake valve and the exhaust valve in the internal combustion engine, and can include but is not limited to variable valve timing (VVT), variable valve lift (VVL), dual variable valve timing (D-VVT), etc. The specific valve control system needs to be determined according to the type of engine and actual needs, which is not limited here. The valve control system can be used to improve the performance and fuel economy of the engine and reduce harmful emissions.

[0043] The valve control parameter can refer to a variable that can be adjusted in the valve control system, and can include but is not limited to valve timing, valve lift and valve duration, etc. The specific valve control parameter needs to be determined according to the actual control needs, which is not limited here. By adjusting the valve control parameter, the optimal working state of the valve can be achieved under different operating conditions of the engine, ensuring efficient operation and low emissions of the engine.

[0044] The internal combustion engine valve can refer to a key component in the engine for controlling the exchange of gas between the cylinder and the outside (intake manifold and exhaust manifold). The internal combustion engine valve includes an intake valve and an exhaust valve. The correct opening and closing of the internal combustion engine valve can improve the charging efficiency and combustion completeness of the engine. The intake valve ensures that enough fresh gas enters the cylinder, and the exhaust valve ensures that the exhaust gas is discharged in time. The two work together to determine the performance and efficiency of the engine.

[0045] In an optional embodiment, when the electronic control unit receives information reflecting the current operating condition and the current fuel property of the engine, the electronic control unit determines a plurality of valve control parameters of the valve control system corresponding to the engine from a preset three-dimensional coordinate system based on the current operating condition and the current fuel property. This process needs to consider the influence of valve control on the combustion process to ensure that the parameter setting can promote combustion efficiency and respond to changes in fuel characteristics. By determining the valve control parameters that match the actual operating condition and fuel type of the engine, the charging efficiency of the engine can be improved, the torque and power output can be enhanced, and the acceleration response and smoothness of the vehicle can be improved.

[0046] In step S108, the engine is controlled based on the waste recirculation rate and the valve control parameter to obtain a control result, wherein the control result is used to indicate whether the combustion performance of the engine reaches the target performance index.

[0047] The control result can be the actual effect of the engine combustion process after adjusting the exhaust gas recirculation rate and valve control parameters. The control result can be used as a feedback signal for the ECU to evaluate whether the current combustion control strategy is effective and whether further adjustments to the EGR rate and valve control parameters are needed to achieve efficient combustion.

[0048] The combustion performance can refer to the quality and efficiency of the engine combustion process. The combustion performance can include but is not limited to combustion efficiency, combustion temperature, combustion stability, combustion completeness, and resulting power output and emission characteristics. The specific combustion performance is determined according to actual judgment needs and is not limited here. The combustion performance can be used to reflect the power, fuel economy, and emission level of the engine, and thus to evaluate the engine design and performance.

[0049] The target performance indicator can refer to the ideal combustion performance standard that the engine should achieve under certain conditions. The target performance indicator can include but is not limited to power and fuel economy indicators, emission compliance indicators, reliability and durability indicators, etc. The specific target performance indicator is determined according to actual performance needs and is not limited here. The target performance indicator provides a clear direction and standard for combustion control. The ECU adjusts the control strategy by monitoring whether the actual combustion performance meets or approaches the target performance indicator, thereby improving the engine's operating state.

[0050] In an alternative embodiment, the ECU monitors the engine's combustion performance in real time according to the adjustment of the exhaust gas recirculation rate and valve control parameters, and compares it with the set target performance indicator. If the combustion performance is lower than the target performance indicator, the ECU will adjust the exhaust gas recirculation rate and valve control parameters until the performance meets the standard. For example, when it is found that the NOx emission is too high, the ECU will increase the exhaust gas recirculation rate to reduce the combustion temperature, and adjust the valve control parameters to improve the combustion process and reduce the generation of NOx. This process is repeated until the engine's combustion performance stabilizes within the target range, ensuring that the engine can maintain a better combustion state under any conditions and achieve the dual goals of high performance and low emissions.

[0051] In an alternative embodiment, first, the ECU continuously monitors the current working condition of the engine while evaluating the current fuel attribute information in real time; then, based on the above information, the ECU dynamically adjusts the EGR rate and the valve control parameters, the appropriate setting of the EGR rate can effectively reduce the combustion temperature and the generation of NOx, and the fine adjustment of the valve control parameters can improve the air flow and the formation of the mixture, providing an ideal environment for combustion; finally, the ECU applies the adjusted valve control parameters and the EGR rate to the combustion control, through the accurate control of the valve opening and closing timing, lift and exhaust gas circulation amount, the efficient and clean combustion process is realized, and the combustion performance of the engine is compared with the target performance index in the process, and the control result is obtained to verify whether the current combustion effect reaches the expected combustion effect. The above process of combustion control of the engine based on the exhaust gas recirculation rate and the valve control parameters not only ensures the efficient and stable operation of the engine, but also promotes the improvement of the environmental performance.

[0052] In the embodiment of the present application, first, the current working condition of the engine and the current fuel attribute information of the current fuel are obtained; then, based on the current working condition and the current fuel attribute information, the exhaust gas recirculation rate of the engine corresponding to the exhaust gas recirculation system is determined; secondly, based on the current working condition and the current fuel attribute information, the valve control parameter of the engine corresponding to the valve control system is determined; finally, based on the exhaust gas recirculation rate and the valve control parameter, the combustion control of the engine is carried out, and the control result is obtained. By obtaining the current working condition and the current fuel attribute information, the present application can capture the subtle changes of the engine under different working conditions and the direct influence of the fuel attribute on the combustion process. Further, based on the current working condition and the current fuel attribute information, the exhaust gas recirculation rate of the exhaust gas recirculation system and the valve control parameter of the valve control system are determined respectively, the exhaust gas recirculation rate and the valve control parameter most matched with the current working condition of the engine and the current fuel attribute information are obtained, so that the engine control system can more flexibly adapt to the changes of the engine operating environment, and at the same time, the combustion process can maintain high efficiency and environmental balance under any condition, achieving the technical purpose of improving fuel combustion control and overall performance of the engine, realizing the technical effect of enhancing the adaptability of the engine to complex operating conditions, improving the combustion efficiency and reducing pollutant emissions, and further solving the technical problem of low combustion efficiency of the engine in the related art.

[0053] Alternatively, based on the current working condition and the current fuel attribute information, the exhaust gas recirculation rate of the engine corresponding to the exhaust gas recirculation system is determined, including: determining the current speed and the current load of the engine based on the current working condition; determining the current fuel heat value of the engine based on the current fuel attribute information; mapping the current speed, the current load and the current fuel heat value on a preset three-dimensional coordinate system to obtain a target three-dimensional coordinate point; determining the preset exhaust gas recirculation rate corresponding to the target three-dimensional coordinate point as the exhaust gas recirculation rate.

[0054] The current speed can refer to the number of rotations per minute of the engine crankshaft, and the current load can refer to the torque output or cylinder pressure level at which the engine is currently operating, both of which reflect the instantaneous operating state and working demand of the engine. By monitoring and identifying the current speed and the current load, the ECU can determine the current operating condition of the engine.

[0055] The current fuel heat value can refer to the heat released by a unit mass or volume of fuel when it is fully combusted. The types of current fuel heat value can include, but are not limited to, high heat value fuel, low heat value fuel, etc. The specific current fuel heat value needs to be determined according to the fuel type and the combustion state, which is not limited here. The current fuel heat value can be used to calculate the energy demand and the exhaust gas recirculation rate during combustion.

[0056] The preset three-dimensional coordinate system can refer to a mathematical model for describing the relationship between engine speed, load, and fuel heat value variables. The three-dimensional coordinate system provides a visual and parameterized method, allowing the ECU to quickly determine the ideal exhaust gas recirculation rate based on the current operating condition and fuel properties, thereby adjusting and improving the combustion process.

[0057] The target three-dimensional coordinate point can refer to a specific point in the preset three-dimensional coordinate system determined by the current speed, current load, and current fuel heat value. The target three-dimensional coordinate point is dynamically changing, and the specific target three-dimensional coordinate point needs to be determined based on the real-time monitored speed, load, and fuel heat value, which is not limited here. The target three-dimensional coordinate point can be used as a reference point to guide the ECU to adjust the EGR rate, ensuring that the engine achieves appropriate combustion performance and environmental protection effects under the current operating condition.

[0058] The preset exhaust gas recirculation rate can refer to a preset ratio of exhaust gas recirculation amount to total intake amount that the engine exhaust gas recirculation system should achieve under specific operating conditions and fuel properties. The types of preset exhaust gas recirculation rate can include, but are not limited to, steady-state preset exhaust gas recirculation rate, acceleration preset exhaust gas recirculation rate, deceleration preset exhaust gas recirculation rate, idle preset exhaust gas recirculation rate, etc. The specific preset exhaust gas recirculation rate needs to be determined based on the actual operating condition and the current fuel heat value, which is not limited here. The preset exhaust gas recirculation rate can be used to control the combustion process, thereby adjusting the combustion temperature, combustion efficiency, and emission level, and achieving the combustion performance target and environmental protection target.

[0059] In an alternative embodiment, first, the current speed and current load of the engine are determined based on the current operating conditions. This step ensures that the ECU can accurately determine the instantaneous operating state of the engine, providing basic information for the subsequent combustion control decision; then, the current fuel heat value is determined according to the current fuel attribute information, such as data obtained through the fuel quality sensor or other preset fuel attributes; further, the current speed, current load and current fuel heat value are mapped to a preset three-dimensional coordinate system to find the most matched coordinate point as the target three-dimensional coordinate point; finally, based on the target three-dimensional coordinate point, the ECU determines the corresponding preset abandoned recirculation rate, i.e. the EGR rate. According to this EGR rate, the exhaust gas recirculation system will adjust the amount of exhaust gas introduced into the combustion chamber to adapt to the requirements of the current operating conditions and fuel characteristics. By collecting and analyzing engine operating conditions and fuel attribute information in real time and determining the EGR rate based on the preset three-dimensional coordinate system, the engine not only can significantly reduce pollutant emissions to achieve environmental protection goals, but also can maintain strong power output and fuel economy in various driving environments.

[0060] Alternatively, the current speed, current load and current fuel heat value are mapped on the preset three-dimensional coordinate system to obtain a target three-dimensional coordinate point, including: mapping the current speed, current load and current fuel heat value on the preset three-dimensional coordinate system to obtain a first coordinate point, a second coordinate point and a third coordinate point, wherein the first coordinate point is the coordinate point of the current speed mapped on the first axis of the preset three-dimensional coordinate system, the second coordinate point is the coordinate point of the current load mapped on the second axis of the preset three-dimensional coordinate system, and the third coordinate point is the coordinate point of the current fuel heat value mapped on the third axis of the preset three-dimensional coordinate system; and constructing a target three-dimensional coordinate point based on the first coordinate point, the second coordinate point and the third coordinate point.

[0061] The above-mentioned first coordinate point can refer to the mapping point of the current speed on the first axis (usually X-axis) in the preset three-dimensional coordinate system. The first coordinate point can be used to help the ECU understand the instantaneous dynamics of the engine. The speed is directly related to the stability of the combustion process and the feasible amount of exhaust gas recirculation, thereby affecting the setting of the EGR rate.

[0062] The above-mentioned second coordinate point can refer to the mapping point of the current load on the second axis (usually Y-axis) in the preset three-dimensional coordinate system. The second coordinate point can represent the torque or cylinder pressure level required by the engine under the current operating state, reflecting the working intensity of the engine. The second coordinate point can be used to help the ECU understand the demand of the engine for combustion efficiency and power output under a specific load, and then adjust the EGR rate to meet these demands while maintaining low emissions.

[0063] The third coordinate point can be a mapping point of the current fuel heat value on the third axis (usually Z axis) in the preset three-dimensional coordinate system, and can directly reflect the heat released by the unit mass or volume of the currently used fuel, and is a direct reflection of the fuel energy characteristics. The third coordinate point can help the ECU to more finely adjust the EGR rate to adapt to the combustion characteristics of different fuels.

[0064] In an alternative embodiment, first, the current speed, the current load, and the current fuel heat value are mapped in a preset three-dimensional coordinate system to obtain corresponding first, second, and third coordinate points; then, the first, second, and third coordinate points are combined in the preset three-dimensional coordinate system to form a point accurately describing the current engine operating state and fuel characteristics, i.e., a target three-dimensional coordinate point. The ECU can quickly determine the matching EGR rate corresponding to the target three-dimensional coordinate point by querying the position of the target three-dimensional coordinate point in the preset three-dimensional coordinate system, thereby achieving effective control of the combustion performance, ensuring that the engine can operate efficiently and environmentally friendly under any working condition, while maintaining good driving performance and vehicle responsiveness.

[0065] For example, assume that the electronic control unit (ECU) of a modern car is monitoring the engine state of a medium-sized car in real time. The information obtained by the ECU from the sensors indicates that the current speed of the engine is 2500 RPM, which represents that the vehicle is driving on a smooth road and belongs to the medium speed range; at the same time, the current load of the engine is 60%, which indicates that the vehicle needs to overcome certain external resistance when driving at medium speed; the current fuel is 95# gasoline, and the current fuel heat value is determined to be 43.1 MJ / kg. Then, the ECU maps the current speed, the current load, and the current fuel heat value into a preset three-dimensional coordinate system. In this coordinate system, the X axis represents the speed, the Y axis represents the load, and the Z axis represents the fuel heat value. Therefore, the current speed of 2500 RPM is mapped as the first coordinate point on the X axis, the current load of 60% is mapped as the second coordinate point on the Y axis, and the current fuel heat value of 43.1 MJ / kg is mapped as the third coordinate point on the Z axis. The ECU determines the target three-dimensional coordinate point formed by the intersection of the three coordinate points in the three-dimensional space, i.e., (X, Y, Z) = (2500, 60, 43.1).

[0066] Finally, based on the target three-dimensional coordinate point, a preset EGR rate is determined from the preset EGR rate mapping table. For example, the target three-dimensional coordinate point may correspond to an EGR rate of 12%, which means that the ECU will instruct the exhaust gas recirculation system to adjust to ensure that 12% of the exhaust gas is reintroduced into the combustion chamber to reduce the combustion temperature and reduce the generation of NOx, while taking into account the influence of fuel heat value on the combustion process. The precise control of this EGR rate will help the engine achieve higher combustion efficiency, power output and environmental compatibility under current operating conditions, embodying the high intelligence and precision of modern automobile control technology in combustion improvement and emission control.

[0067] In the above process, by mapping the current speed, current load and current fuel heat value on the preset three-dimensional coordinate system, a target three-dimensional coordinate point is formed, and the EGR rate is determined according to the point, which can realize fine control of the engine combustion process, not only improve the combustion efficiency and reduce the emissions, but also ensure the stable operation and driving comfort of the vehicle under different working conditions. The numerical values in the above steps are only examples, and the specific numerical values need to be determined according to the actual situation, which is not limited here.

[0068] Alternatively, based on the current operating condition and the current fuel attribute information, the valve control parameter corresponding to the valve control system of the engine is determined, including: combining the current operating condition and the current fuel attribute to obtain a combination item; detecting the combination item based on the inspection strategy table to obtain a detection result, wherein the detection result is used to indicate whether the inspection strategy table contains a first target item matching the combination item, the inspection strategy table contains a plurality of items, and different items are obtained by combining different operating conditions and different fuel attributes; in response to the detection result being that the inspection strategy table contains the first target item, determining the first preset valve control parameter corresponding to the first target item based on the inspection strategy table, and determining the first preset valve control parameter as the valve control parameter.

[0069] The above combination item can refer to a data set composed of the current operating condition of the engine and the current fuel attribute. The combination item needs to be determined according to a plurality of operating conditions and fuel attributes, which is not limited here. The combination item can be used to determine the corresponding valve control parameter based on the current operating condition of the engine and the current fuel attribute, thereby improving the accuracy of combustion control.

[0070] The above inspection strategy table can refer to a database containing a series of preset combination items and corresponding valve control parameters. The inspection strategy table can be developed based on a large number of experiments and actual operation data, aiming to cover the optimal control strategy of the engine under various operating conditions and fuel conditions. The inspection strategy table can be used as a lookup tool to help the ECU quickly determine the valve control parameter matching the current operating condition and fuel attribute, avoiding the complexity and uncertainty of real-time calculation, and improving the efficiency and accuracy of control.

[0071] The detection result can be a judgment made by the ECU on the matching of the combined entry in the check strategy table, indicating whether there is a first target entry that matches the current operating condition and fuel property. The detection result can be used in the subsequent selection process of the valve control parameter. If there is a matching first target entry, the ECU will read the corresponding parameter from the check strategy table; otherwise, the ECU can use default parameters or perform real-time calculation.

[0072] In an optional embodiment, the detection result can include, but is not limited to, the check strategy table containing a first target entry matching the combined entry, the check strategy table not containing a first target entry matching the combined entry, in the case of the detection result being "containing", the valve control of the engine will be performed according to the pre-set matching parameter; and in the case of the detection result being "not containing", the ECU needs to take other strategies, such as using the closest parameter setting, or starting an adaptive learning program to dynamically adjust the valve control parameter.

[0073] The first target entry can be a specific entry in the check strategy table that matches the combined entry composed of the current operating condition and the current fuel property. The existence of the first target entry is a prerequisite for accurate matching of the valve control parameter, and can be used to ensure that the valve control system adjusts according to the current operating requirements of the engine, thereby improving combustion efficiency, reducing emissions, and improving power performance.

[0074] The first pre-set valve control parameter can be a valve control parameter associated with the first target entry and pre-set for a specific operating condition and fuel property. The determination of the first pre-set valve control parameter is a core link in the entire control chain, which directly affects the efficiency of gas exchange in the engine cylinder and the improvement of the combustion process, and is a key technical parameter for achieving high performance, low emission and good fuel economy of the engine.

[0075] In an alternative embodiment, first, the ECU intelligently combines the current operating condition of the engine and the current fuel attribute information based on real-time monitoring, forming a combined entry that accurately reflects the current operating state; then, the ECU compares this combined entry with the preset inspection strategy table to detect whether there is a first target entry in the inspection strategy table that matches the current combined entry, obtaining a detection result; if the detection result shows that there is a matching entry, the ECU immediately reads the corresponding first target entry from the inspection strategy table and then obtains the first preset valve control parameter. This preset parameter, which is verified by an expert system and a large number of experiments, is specifically used for the optimal valve control setting of the current operating condition and fuel attribute combination, including but not limited to valve opening and closing timing, lift, duration, etc. Finally, the ECU directly determines the first preset valve control parameter as the valve control parameter under the current operating condition to guide the precise adjustment of the engine valve control system. The above process, by introducing a strategy table query mechanism, deals with different operating conditions and fuel attributes, thereby ensuring that the selection of valve control parameters is as accurate as possible under all possible operating conditions and fuel conditions, which helps to improve combustion efficiency and reduce emissions, and at the same time enhances the flexibility and robustness of the control system.

[0076] For example, a new energy hybrid car equipped with an advanced engine management system, when the vehicle is in a city low-speed driving condition (such as a speed of 1500 RPM and a load of about 30%), and the current use is an ethanol gasoline mixture (ethanol content 10%, heat value slightly lower than pure gasoline), the ECU will immediately take action and execute the following control process:

[0077] First, the ECU intelligently combines the current operating condition (low-speed city driving) and the fuel property (10% ethanol gasoline) to form a specific combination entry, which precisely describes the engine's operating state and fuel characteristics at that moment. Then, the ECU queries the pre-set inspection strategy table, which is a detailed database containing hundreds of entries combined from different operating conditions and fuel properties, along with corresponding valve control parameters. The ECU's inspection task is to find a first target entry that exactly matches the current combination entry. In this example, the ECU successfully identifies a matching record, the entry for "low-speed city driving operating condition + 10% ethanol gasoline fuel property," and the detection result is that the ECU finds a control scheme suitable for the current situation. In response to this detection result, the ECU extracts a set of first pre-set valve control parameters corresponding to the first target entry from the inspection strategy table. This set of parameters includes: a later intake valve closing time to increase the internal EGR (exhaust gas recirculation) effect and reduce the combustion temperature; appropriate valve lift and duration adjustments to adapt to the combustion characteristics of the mixed fuel and improve combustion efficiency. Finally, the ECU directly determines this set of first pre-set valve control parameters as the valve control parameters for the current operating condition and sends them to the valve control system for execution. Through precise data analysis and pre-set parameter matching, the above process achieves the improvement of the combustion process, while ensuring that the engine maintains high efficiency, environmental protection and stability under various operating conditions and fuel conditions. The above numerical values are only examples, and the specific numerical values need to be determined according to the actual situation, which is not limited here.

[0078] Optionally, the method further comprises: in response to the detection result that the first target entry is not included in the inspection strategy table, matching the plurality of entries and the combination entry to obtain at least one second target entry, wherein the at least one second target entry is at least one entry in the plurality of entries that has a higher matching degree with the combination entry than other entries; determining second pre-set valve control parameters corresponding to the at least one second target entry based on the inspection strategy table; and interpolating the second pre-set valve control parameters corresponding to the at least one second target entry to obtain the valve control parameters.

[0079] The above-mentioned second target entry can refer to a target entry with a higher matching degree with the current combination entry based on the matching degree sorting result. The second target entry can serve as an alternative scheme to provide better valve control parameter settings, compensating for the lack of exact matches in the inspection strategy table, and ensuring that the engine maintains good performance and emission control under different operating conditions.

[0080] The matching degree can refer to a quantitative indicator for measuring the similarity of the entries in the check strategy table and the current combined entry in terms of working conditions and fuel properties. The matching degree calculation method can include but is not limited to Euclidean distance, cosine similarity, and machine learning models, and the specific matching degree calculation method needs to be determined according to actual needs, which is not limited here. The matching degree can be used to help the ECU select the entry closest to the current working conditions and fuel properties as the second target entry.

[0081] The second preset valve control parameter can refer to the valve control parameter determined from the check strategy table based on the second target entry. As a suboptimal choice, the second preset valve control parameter provides initial settings for valve opening and closing timing, lift, duration, and other parameters.

[0082] In an optional embodiment, when the ECU cannot find the first target entry that best matches the current working conditions and fuel properties in the check strategy table, it can find the second target entry with a higher matching degree and perform interpolation based on the corresponding second preset valve control parameter to generate a set of valve control parameters that are close to the optimal. This strategy not only improves the adaptability and performance of the engine in complex operating environments, but also reflects the flexibility and intelligent decision-making ability of modern automotive control technology in the face of unknown or atypical working conditions. The valve control parameters obtained by interpolation calculation can ensure that the engine operates in an optimal state under various conditions, effectively balancing the needs of performance, economy, and environmental protection.

[0083] Optionally, matching the plurality of entries and the combined entry to obtain at least one second target entry includes: matching the plurality of entries and the combined entry to obtain matching degrees of the plurality of entries; sorting the matching degrees of the plurality of entries to obtain a sorting result; and determining at least one second target entry from the plurality of entries based on the sorting result.

[0084] The sorting result can refer to a list formed by arranging the matching degrees in order of their heights after the ECU matches the plurality of entries and the combined entry and calculates their respective matching degrees. The type of sorting result can include but is not limited to single-dimensional sorting result, multi-dimensional comprehensive sorting result, weight-adjusted sorting result, etc. The specific sorting result needs to be determined according to actual needs, which is not limited here. The sorting result can be used to help the ECU quickly identify entries with a higher matching degree to the current combined entry, i.e., the second target entry, thereby avoiding blind search and improving decision-making speed and accuracy.

[0085] In an optional embodiment, firstly, the plurality of entries in the check strategy table are matched with the combination entry formed by the current working condition of the engine and the current fuel attribute, and the matching degrees of each entry are calculated; then, the calculated matching degrees are sorted to generate a sorting result; finally, the ECU identifies and determines at least one entry with a higher matching degree as the second target entry based on the sorting result. Through the matching degree calculation and matching degree sorting of the plurality of entries and the combination entry, the sorting result is obtained, and then the second target entry is determined based on the sorting result, so that the improvement of the combustion efficiency and the power output of the engine can be realized without a directly matched entry, thereby ensuring the stability of the engine.

[0086] Optionally, the combustion control is performed on the engine based on the waste recirculation rate and the valve control parameter to obtain a control result, including: converting the waste recirculation rate to obtain a first control parameter of the exhaust valve corresponding to the first gas and a second control parameter of the intake valve corresponding to the second gas; controlling the exhaust valve based on the first control parameter, controlling the intake valve based on the second control parameter, and controlling the valve of the internal combustion engine based on the valve control parameter to obtain the control result.

[0087] The first control parameter can be a control parameter of the exhaust valve corresponding to the first gas determined based on the waste recirculation rate, and the first control parameter can include but is not limited to the time of opening and closing of the exhaust valve, the relative timing, the lift of the exhaust valve, the duration of opening and closing of the exhaust valve, etc. The specific first control parameter needs to be determined according to the waste recirculation rate, which is not limited here. The first control parameter can be used to adjust the opening time, closing time, lift and duration of the exhaust valve to control the exhaust gas recirculation amount.

[0088] The second control parameter can be a control parameter of the intake valve corresponding to the second gas determined based on the waste recirculation rate, and the second control parameter can include but is not limited to the time of opening and closing of the intake valve, the relative timing, the lift of the intake valve, the duration of opening and closing of the intake valve, etc. The specific second control parameter needs to be determined according to the waste recirculation rate, which is not limited here. The second control parameter can be used to adjust the opening and closing time, as well as the lift and duration of the intake valve to ensure the quality of the mixture in the combustion chamber and the efficiency of the combustion process.

[0089] The intake valve can be a component on the cylinder head of the internal combustion engine responsible for introducing the mixture into the combustion chamber. The intake valve can be used to control the amount and timing of the air and fuel mixture entering the combustion chamber, thereby improving the efficiency of the combustion process and the uniformity of the mixture.

[0090] The exhaust valve can refer to a component on the cylinder head of the internal combustion engine responsible for discharging the burned exhaust gas from the combustion chamber. The exhaust valve can be used to discharge the burned exhaust gas from the combustion chamber, thereby reducing the internal pressure of the combustion chamber, ensuring the appropriate amount of exhaust gas recirculation, etc.

[0091] In an optional embodiment, the real-time monitored exhaust gas recirculation rate (EGR rate) is first received, and then the EGR rate is converted into specific control instructions for the intake valve and the exhaust valve according to a preset conversion function, to generate a first control parameter for the exhaust valve and a second control parameter for the intake valve; then, the working state of the exhaust valve is adjusted based on the first control parameter, including the timing, lift and duration of its opening and closing, to ensure the accurate amount of exhaust gas recirculation. At the same time, the intake valve is adjusted based on the second control parameter to adjust the inflow amount and distribution of the air and fuel mixture, thereby promoting a more efficient combustion process. By converting the exhaust gas recirculation rate into valve control parameters and adjusting the working state of the exhaust valve and the intake valve in real time, the ECU can achieve efficient control of the combustion process of the internal combustion engine, thereby significantly improving the combustion efficiency and reducing pollutant emissions.

[0092] Optionally, the method further comprises: obtaining an operating parameter of the engine; inputting the operating parameter and the current fuel attribute information into a working condition recognition model to recognize the working condition of the engine by using the working condition recognition model to obtain a current working condition.

[0093] The operating parameter can refer to various physical quantities and indicators reflecting the current operating state of the engine during engine operation. The operating parameter can include but is not limited to engine speed, torque, intake temperature, throttle position, coolant temperature, fuel injection amount, intake pressure, etc. The specific operating parameter is determined according to actual needs, which is not limited here. The operating parameter can be used to provide key information of the real-time operating state of the engine to help the ECU determine the working condition of the engine.

[0094] The working condition recognition model can refer to a mathematical model or algorithm for working condition recognition. The type of working condition recognition model can include but is not limited to rule-based models, statistical learning models, deep learning models, and fuzzy logic models, etc. The specific working condition recognition model is determined according to the actual design of the vehicle, which is not limited here. The working condition recognition model is used to convert the engine operating state into a specific operable working condition category, so as to facilitate the ECU to apply the preset control strategy.

[0095] In an optional embodiment, first, real-time operating parameters are collected from various sensors of the engine, including but not limited to engine speed, torque, intake temperature, coolant temperature, throttle position, intake pressure, etc., and attribute information of the fuel currently in use, such as fuel type, octane or cetane number, fuel temperature, etc. Then the operating parameters and the current fuel attribute information are input into a pre-trained operating condition recognition model. The model uses machine learning, neural network, etc. algorithm to quickly and accurately identify the current operating condition of the engine, such as idle, acceleration, deceleration, high-speed cruising, etc. Finally, the operating condition recognition model feeds back the identified operating condition information to the ECU, providing a basis for decision-making for the subsequent control strategy. Through inputting the operating parameters of the engine and the fuel attribute information into the operating condition recognition model, the above process can realize real-time and accurate identification of the operating condition of the engine, and then adjust the control strategy, not only improving the combustion efficiency of the engine and reducing emissions, but also improving the driving experience, enhancing the adaptability and reliability of the vehicle.

[0096] According to the embodiment of the present application, an embodiment of a combustion control device of an engine is provided. It should be noted that the device can be used to execute the above-mentioned combustion control method of the engine, and the specific implementation method and preferred application scenario are the same as those of the above-mentioned embodiment, which will not be repeated here.

[0097] Figure 2 is a schematic diagram of a combustion control device of an engine according to an embodiment of the present application, as shown in Figure 2 The device comprises the following: an acquisition module 202, a first determination module 204, a second determination module 206, and a control module 208.

[0098] The acquisition module 202 is configured to acquire a current operating condition of the engine and current fuel attribute information of a current fuel, wherein the engine generates power by burning the current fuel; the first determination module 204 is configured to determine, based on the current operating condition and the current fuel attribute information, a waste recirculation rate of the engine corresponding to a waste recirculation system, wherein the waste recirculation system is used to indicate a system for inputting a mixed gas into a combustion chamber, the mixed gas is obtained by mixing a first gas discharged by the engine burning the current fuel and a second gas in the current environment, and the waste recirculation rate is used to indicate a ratio of the first gas to the mixed gas; the second determination module 206 is configured to determine, based on the current operating condition and the current fuel attribute information, a valve control parameter of the engine corresponding to a valve control system, wherein the valve control system is used to control opening or closing of an internal combustion engine valve corresponding to the engine; and the control module 208 is configured to perform combustion control on the engine based on the waste recirculation rate and the valve control parameter, to obtain a control result, wherein the control result is used to indicate whether a combustion performance of the engine reaches a target performance indicator.

[0099] Optionally, the first determining module comprises: a unit configured to determine a current speed and a current load of the engine based on the current working condition; a unit configured to determine a current fuel heat value of the engine based on the current fuel attribute information; a unit configured to map the current speed, the current load and the current fuel heat value on a preset three-dimensional coordinate system to obtain a target three-dimensional coordinate point; and a unit configured to determine that the target three-dimensional coordinate point corresponds to the preset waste recirculation rate as the waste recirculation rate.

[0100] Optionally, the first determining module further comprises: a unit configured to map the current speed, the current load and the current fuel heat value on a preset three-dimensional coordinate system to obtain a first coordinate point, a second coordinate point and a third coordinate point, wherein the first coordinate point is a coordinate point of the current speed on a first axis of the preset three-dimensional coordinate system, the second coordinate point is a coordinate point of the current load on a second axis of the preset three-dimensional coordinate system, and the third coordinate point is a coordinate point of the current fuel heat value on a third axis of the preset three-dimensional coordinate system; and a unit configured to construct the target three-dimensional coordinate point based on the first coordinate point, the second coordinate point and the third coordinate point.

[0101] Optionally, the second determining module comprises: a unit configured to combine the current working condition and the current fuel attribute to obtain a combination entry; a unit configured to detect the combination entry based on the inspection strategy table to obtain a detection result, wherein the detection result is used to indicate whether the inspection strategy table contains a first target entry matched with the combination entry, the inspection strategy table contains a plurality of entries, and different entries are obtained by combining different working conditions and different fuel attributes; and a unit configured to, in response to the detection result being that the inspection strategy table contains the first target entry, determine a first preset valve control parameter corresponding to the first target entry based on the inspection strategy table, and determine the first preset valve control parameter as the valve control parameter.

[0102] Optionally, the device is further configured to, in response to the detection result being that the inspection strategy table does not contain the first target entry, match the plurality of entries and the combination entry to obtain at least one second target entry, wherein the at least one second target entry is at least one entry of the plurality of entries that has a higher matching degree with the combination entry than other entries; determine a second preset valve control parameter corresponding to the at least one second target entry based on the inspection strategy table; and interpolate the second preset valve control parameter corresponding to the at least one second target entry to obtain the valve control parameter.

[0103] Optionally, the device is further configured to match the plurality of entries and the combination entry to obtain matching degrees of the plurality of entries; sort the matching degrees of the plurality of entries to obtain a sorting result; and determine at least one second target entry of the plurality of entries based on the sorting result.

[0104] Optionally, the control module comprises: a unit configured to convert the waste recirculation rate to obtain a first control parameter of the exhaust valve corresponding to the first gas and a second control parameter of the intake valve corresponding to the second gas; and a unit configured to control the exhaust valve based on the first control parameter, control the intake valve based on the second control parameter, and control the valve of the internal combustion engine based on the valve control parameter to obtain a control result.

[0105] Optionally, the device is further configured to obtain an operating parameter of the engine; input the operating parameter and the current fuel attribute information into the operating condition recognition model, and recognize the operating condition of the engine by using the operating condition recognition model to obtain a current operating condition.

[0106] Embodiments of the present application also provide a vehicle, comprising: a memory storing an executable program; and a processor configured to execute the program, wherein the program is configured to execute the method in the embodiments of the present application when executed.

[0107] Embodiments of the present application also provide a computer readable storage medium, comprising a stored executable program, wherein the computer readable storage medium is configured to control a device on which the computer readable storage medium is located to execute the method in the embodiments of the present application when the executable program is executed.

[0108] Embodiments of the present application also provide a computer program product, comprising a computer program configured to implement the method in the embodiments of the present application when executed by a processor.

[0109] Embodiments of the present application also provide a computer program product, comprising a non-volatile computer readable storage medium configured to store a computer program, wherein the computer program is configured to implement the method in the embodiments of the present application when executed by a processor.

[0110] Embodiments of the present application also provide a computer program configured to implement the method in the embodiments of the present application when executed by a processor.

[0111] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0112] In several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented by other means. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed each other can be through some interface, indirect coupling or communication connection between units or modules, which can be electrical or other forms.

[0113] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0114] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0115] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and various program code storage media.

[0116] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A combustion control method of an engine, characterized by, The method comprises: obtaining current working condition of an engine and current fuel attribute information of current fuel, wherein the engine generates power by burning the current fuel; determining, based on the current working condition and the current fuel attribute information, a wastegate recirculation rate of a wastegate recirculation system corresponding to the engine, wherein the wastegate recirculation system is used to input a mixed gas into a combustion chamber, the mixed gas is obtained by mixing a first gas exhausted by the engine burning the current fuel and a second gas in a current environment, and the wastegate recirculation rate is used to represent a ratio of the first gas to the mixed gas; determining, based on the current working condition and the current fuel attribute information, a valve control parameter of a valve control system corresponding to the engine, wherein the valve control system is used to control opening or closing of an internal combustion engine valve corresponding to the engine; controlling, based on the wastegate recirculation rate and the valve control parameter, combustion of the engine to obtain a control result, wherein the control result is used to represent whether a combustion performance of the engine reaches a target performance index.

2. The combustion control method of an engine according to claim 1, characterized by, The method comprises: determining, based on the current working condition, a current speed and a current load of the engine; determining, based on the current fuel attribute information, a current fuel calorific value of the engine; mapping the current speed, the current load and the current fuel calorific value on a preset three-dimensional coordinate system to obtain a target three-dimensional coordinate point; determining, as the wastegate recirculation rate, a preset wastegate recirculation rate corresponding to the target three-dimensional coordinate point.

3. The combustion control method of an engine according to claim 2, characterized by, The method comprises: mapping the current speed, the current load and the current fuel calorific value on the preset three-dimensional coordinate system to obtain a first coordinate point, a second coordinate point and a third coordinate point, wherein the first coordinate point is a coordinate point of the current speed on a first axis of the preset three-dimensional coordinate system, the second coordinate point is a coordinate point of the current load on a second axis of the preset three-dimensional coordinate system, and the third coordinate point is a coordinate point of the current fuel calorific value on a third axis of the preset three-dimensional coordinate system; constructing the target three-dimensional coordinate point based on the first coordinate point, the second coordinate point and the third coordinate point.

4. The combustion control method of an engine according to claim 1, characterized by, The method comprises: combining the current working condition and the current fuel attribute to obtain a combination entry; detecting the combination entry based on an inspection strategy table to obtain a detection result, wherein the detection result is used to represent whether a first target entry matching the combination entry is contained in the inspection strategy table, and the inspection strategy table contains a plurality of entries, different entries being obtained by combination of different working conditions and different fuel attributes. In response to the detection result being that the first target entry is contained in the check policy table, a first preset valve control parameter corresponding to the first target entry is determined based on the check policy table, and the first preset valve control parameter is determined as the valve control parameter.

5. The combustion control method of an engine according to claim 4, characterized by, The method further includes: In response to the detection result being that the first target entry is not contained in the check policy table, the plurality of entries and the combined entry are matched to obtain at least one second target entry, wherein the at least one second target entry is at least one entry of the plurality of entries that has a higher matching degree with the combined entry than other entries; A second preset valve control parameter corresponding to the at least one second target entry is determined based on the check policy table; The second preset valve control parameter corresponding to the at least one second target entry is interpolated to obtain the valve control parameter.

6. The combustion control method of an engine according to claim 5, characterized by, The matching of the plurality of entries and the combined entry to obtain the at least one second target entry includes: The matching of the plurality of entries and the combined entry to obtain matching degrees of the plurality of entries; The matching degrees of the plurality of entries are sorted to obtain a sorting result; Based on the sorting result, the at least one second target entry of the plurality of entries is determined.

7. The combustion control method of an engine according to claim 1, characterized by, Based on the waste recirculation rate and the valve control parameter, combustion control is performed on the engine to obtain a control result, including: The waste recirculation rate is converted to obtain a first control parameter of the exhaust valve corresponding to the first gas and a second control parameter of the intake valve corresponding to the second gas; Based on the first control parameter, the exhaust valve is controlled, based on the second control parameter, the intake valve is controlled, and based on the valve control parameter, the internal combustion engine valve is controlled to obtain the control result.

8. The combustion control method of an engine according to claim 1, characterized by, The method further includes: An operating parameter of the engine is obtained; The operating parameter and the current fuel property information are input into a working condition recognition model, and the working condition recognition model is used to recognize the working condition of the engine to obtain the current working condition.

9. A vehicle characterized by comprising: It includes: A memory storing an executable program; A processor configured to execute the program, wherein the program performs the method of any one of claims 1 to 8 when executed.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein the executable program controls the device where the storage medium is located to perform the method of any one of claims 1 to 8 when executed.

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