Fuel injection amount control method, device, storage medium, and electronic device

Abstract

The application provides a fuel injection amount control method and device, a storage medium and an electronic device. Vehicle operation information and a correction value of a fuel injection amount of a fuel injector are obtained. The vehicle operation information includes an ambient temperature, an ambient pressure and an intake pressure. The correction value of the fuel injection amount includes a correction value of the fuel injection amount in a first temperature range, a correction value of the fuel injection amount in a second temperature range and a correction value of the fuel injection amount in a first altitude range. In the case where the intake pressure is greater than an intake pressure target value, if the intake pressure is greater than an intake pressure threshold value, the fuel injection amount of the fuel injector is reduced to a preset range matched with a design power of an engine. If the intake pressure is less than or equal to the intake pressure threshold value, the fuel injection amount is adjusted to a corresponding range based on the ambient pressure and the ambient temperature. The corresponding range is determined based on the correction value of the fuel injection amount. The scheme solves the problem that a control strategy of the fuel injection amount of the fuel injector is difficult to ensure that the power of the engine is within a design boundary range.

Description

Technical Field

[0001] This application relates to the field of engine technology, and more specifically, to a method for controlling the amount of fuel injection, a device for controlling the amount of fuel injection, a computer-readable storage medium, and an electronic device. Background Technology

[0002] Mining machinery operates under harsh conditions, placing extremely high demands on the reliability and stability of its engines. However, in actual use, unstable fuel quality and the impurities it may contain can accelerate injector wear, leading to an abnormal increase in fuel injection volume. This can cause the engine output power to exceed the design range, resulting in a series of major malfunctions such as piston crown melting and shock absorber cracking.

[0003] Existing engine control strategies primarily focus on parameter correction under initial operating conditions, lacking effective mechanisms to address potential fuel injector degradation after long-term service. This is especially true for mining machinery designed to meet stringent emission standards. The elimination of some traditional control components, such as intake throttle valves, makes it difficult to adjust engine power under harsh conditions like low temperatures and high altitudes using existing control strategies, thus failing to ensure the engine operates within safe design limits. Summary of the Invention

[0004] The main objective of this application is to provide a method for controlling the amount of fuel injection, a device for controlling the amount of fuel injection, a computer-readable storage medium, and an electronic device, so as to at least solve the problem that the fuel injection quantity control strategy of the fuel injector in the prior art is difficult to guarantee that the power of the engine is within the design boundary range.

[0005] To achieve the above objectives, according to one aspect of this application, a method for controlling the amount of fuel injected by an injector is provided. The method includes: acquiring vehicle operating information and correction values ​​for the amount of fuel injected by the injector; the vehicle operating information including ambient temperature, ambient pressure, and intake air pressure; the correction values ​​for the amount of fuel injected including correction values ​​for the amount of fuel injected within a first temperature range, correction values ​​for the amount of fuel injected within a second temperature range, and correction values ​​for the amount of fuel injected within a first altitude range, each correction value for the amount of fuel injected being determined based on bench calibration tests; if the intake air pressure is greater than a target intake air pressure value, determining whether the intake air pressure is greater than an intake air pressure threshold; if the intake air pressure is greater than the intake air pressure threshold, reducing the amount of fuel injected by the injector to a preset range matching the engine's design power; and if the intake air pressure is less than or equal to the intake air pressure threshold, adjusting the amount of fuel injected to a corresponding range based on the ambient pressure and the ambient temperature, the corresponding range being determined based on the correction values ​​for the amount of fuel injected.

[0006] Optionally, obtaining the correction value for the fuel injection quantity includes: within the first temperature range, obtaining the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values, and determining the correction value for the fuel injection quantity within the first temperature range based on the first intake pressure value and the target intake pressure value; within the second temperature range, obtaining the second intake pressure values ​​of the engine at different speeds and torques, and determining the correction value for the fuel injection quantity within the second temperature range based on the second intake pressure value and the target intake pressure value, wherein the minimum value within the first temperature range is greater than the maximum value within the second temperature range; within the first altitude range, obtaining the third intake pressure values ​​of the engine at different speeds and torques, and determining the correction value for the fuel injection quantity within the first altitude range based on the third intake pressure value and the target intake pressure value.

[0007] Optionally, within the first temperature range, acquiring the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values, and determining the correction value of the fuel injection quantity within the first temperature range based on the first intake pressure value and the target intake pressure value, includes: within the first temperature range, acquiring the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values ​​through the bench calibration test; determining the average intake pressure when the engine reaches the design power target as the target intake pressure value; calculating the deviation between each first intake pressure value and the target intake pressure value to obtain multiple deviation values; and determining the correction value of the fuel injection quantity within the first temperature range based on the multiple deviation values.

[0008] Optionally, when the intake pressure is less than or equal to the intake pressure threshold, the fuel injection quantity is adjusted to a corresponding range based on the ambient pressure and the ambient temperature. The corresponding range is determined based on a correction value for the fuel injection quantity. This includes: when the intake pressure is less than or equal to the intake pressure threshold, determining whether the ambient pressure falls within a first altitude range; if it falls within the first altitude range, adjusting the fuel injection quantity based on the correction value for the fuel injection quantity within the first altitude range; if it falls outside the first altitude range but falls within the first temperature range, adjusting the fuel injection quantity based on the correction value for the fuel injection quantity within the first temperature range; if it falls outside the first altitude range but falls within the second temperature range, adjusting the fuel injection quantity based on the correction value for the fuel injection quantity within the second temperature range.

[0009] Optionally, if the engine is within the first altitude range, the fuel injection quantity is adjusted based on the correction value of the fuel injection quantity within the first altitude range, including: if the engine is within the first altitude range, obtaining the current engine speed and current torque; matching the corresponding correction value among the correction values ​​of the fuel injection quantity within the first altitude range according to the current engine speed and current torque to obtain a target correction value; and adjusting the fuel injection quantity according to the target correction value.

[0010] Optionally, when the intake pressure is greater than the intake pressure threshold, reducing the fuel injection quantity of the injector to a preset range that matches the engine design power includes: when the intake pressure is greater than the intake pressure threshold, calculating the difference between the current fuel injection quantity of the injector and the fuel injection quantity that matches the engine design power to obtain a first difference; and reducing the fuel injection quantity to the preset range based on the first difference.

[0011] Optionally, determining the correction value of the fuel injection quantity within the first temperature range based on multiple deviation values ​​includes: obtaining a preset fuel injection quantity adjustment coefficient, the preset fuel injection quantity adjustment coefficient being determined based on the engine characteristics and test data; and calculating the correction value of the fuel injection quantity within the first temperature range based on the preset fuel injection quantity adjustment coefficient and the deviation values.

[0012] According to another aspect of this application, a fuel injection quantity control device is provided for controlling the fuel injection quantity of a fuel injector. The control device includes: an acquisition unit for acquiring vehicle operating information and a correction value for the fuel injection quantity of the fuel injector, the vehicle operating information including ambient temperature, ambient pressure, and intake air pressure, the correction value for the fuel injection quantity including a correction value for the fuel injection quantity within a first temperature range, a correction value for the fuel injection quantity within a second temperature range, and a correction value for the fuel injection quantity within a first altitude range, each of the correction values ​​for the fuel injection quantity being determined based on bench calibration tests; a first processing unit for determining whether the intake air pressure is greater than an intake air pressure threshold when the intake air pressure is greater than the intake air pressure target value, and reducing the fuel injection quantity of the fuel injector to a preset range matching the engine design power when the intake air pressure is greater than the intake air pressure threshold; and a second processing unit for adjusting the fuel injection quantity to a corresponding range based on the ambient pressure and the ambient temperature when the intake air pressure is less than or equal to the intake air pressure threshold, the corresponding range being determined based on the correction value for the fuel injection quantity.

[0013] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform any of the aforementioned fuel injection quantity control methods.

[0014] According to another aspect of this application, an electronic device is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a method for performing any of the aforementioned fuel injection quantity control methods.

[0015] By applying the technical solution of this application, vehicle operating information and the correction value of the fuel injection quantity of the injector are obtained. The vehicle operating information includes ambient temperature, ambient pressure, and intake air pressure. The correction value of the fuel injection quantity includes the correction value of the fuel injection quantity within a first temperature range, the correction value of the fuel injection quantity within a second temperature range, and the correction value of the fuel injection quantity within a first altitude range. Each correction value of the fuel injection quantity is determined based on bench calibration tests. When the intake air pressure is greater than the intake air pressure target value, it is determined whether the intake air pressure is greater than the intake air pressure threshold. If the intake air pressure is greater than the intake air pressure threshold, the fuel injection quantity of the injector is reduced to a preset range that matches the engine design power. When the intake air pressure is less than or equal to the intake air pressure threshold, the fuel injection quantity is adjusted to a corresponding range based on the ambient pressure and ambient temperature. The corresponding range is determined based on the correction value of the fuel injection quantity. This solution monitors the vehicle's operating environment in real time, including ambient temperature, ambient pressure, and intake pressure. Based on the fuel injection quantity correction value obtained from bench calibration tests, it can intelligently determine whether the intake pressure is approaching a dangerous threshold when it exceeds the target value. This allows for precise adjustment of the fuel injection quantity, ensuring the engine always operates within a safe range appropriate to its design power. Under normal or specific environments (such as low temperatures and high altitudes), it can automatically adapt to environmental changes, maintaining stable engine output power by adjusting the fuel injection quantity. This effectively prevents engine overload or performance degradation caused by changes in environmental conditions or fuel injector performance deterioration, thus solving the problem that existing fuel injection quantity control strategies often fail to guarantee engine power within design limits. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 A hardware structure block diagram of a mobile terminal for executing a fuel injection quantity control method according to an embodiment of this application is shown.

[0018] Figure 2 A schematic flowchart of a fuel injection quantity control method according to an embodiment of this application is shown;

[0019] Figure 3 A flowchart is shown of a specific method for controlling the amount of fuel injection according to an embodiment of this application;

[0020] Figure 4 A structural block diagram of a fuel injection quantity control device provided according to an embodiment of this application is shown.

[0021] The above figures include the following reference numerals:

[0022] 102. Processor; 104. Memory; 106. Transmission device; 108. Input / output device. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] As described in the background section, the prior art has made it difficult to adjust engine power under harsh conditions such as low temperature and high altitude by eliminating some traditional control components such as intake throttle valves. In order to solve the problem that the control strategy of injector fuel quantity cannot guarantee that the engine power is within the design boundary range, the embodiments of this application provide a fuel quantity control method, a fuel quantity control device, a computer-readable storage medium, and an electronic device.

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a fuel injection quantity control method according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0029] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the fuel injection quantity control method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0030] This embodiment provides a method for controlling the amount of fuel injection that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0031] Figure 2 This is a schematic flowchart of a fuel injection quantity control method according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0032] Step S201: Obtain vehicle operating information and the correction value of the fuel injection quantity of the above-mentioned fuel injector. The vehicle operating information includes ambient temperature, ambient pressure and intake pressure. The correction value of the fuel injection quantity includes the correction value of the fuel injection quantity in the first temperature range, the correction value of the fuel injection quantity in the second temperature range, and the correction value of the fuel injection quantity in the first altitude range. Each of the above-mentioned correction values ​​of the fuel injection quantity is determined based on bench calibration test.

[0033] Specifically, vehicle operating information includes ambient temperature, ambient pressure, and intake pressure. These parameters are crucial for understanding the engine's current operating environment. Ambient temperature reflects the air temperature conditions and directly affects the engine's thermal management. At low temperatures, the engine may require more fuel to compensate for the increased air density and resulting changes in combustion efficiency. Ambient pressure is typically used for altitude adaptation adjustments because increased altitude reduces air density. Intake pressure is the pressure of the air currently being drawn into the engine and is a key feedback signal in the control strategy, used to monitor the engine's load status in real time.

[0034] The fuel injection quantity correction value is a preset parameter in the control strategy, determined in advance according to different operating environments, used to adjust the fuel injection quantity of the injectors. The determination of the fuel injection quantity correction value is based on bench calibration tests. By simulating various temperature and altitude conditions in a laboratory environment, the engine's optimal performance and emission standards under different operating conditions are tested, thus obtaining a series of fuel injection quantity adjustment values ​​matched to environmental conditions. These correction values ​​can be stored in the software in tabular or function form, facilitating quick retrieval and application based on real-time operating information. Bench calibration tests are a process of testing and adjusting engine performance in a controlled environment. Through these tests, it is possible to accurately understand the engine's performance changes under different temperature and pressure conditions, and how to optimize the engine's output power, efficiency, and emission performance by adjusting the fuel injection quantity. The test data provides the basis for calculating the fuel injection quantity correction value, ensuring that the engine's operating parameters are close to optimal under various environmental conditions.

[0035] Overall, the above describes the initial stage of the control method, which involves collecting necessary environmental parameters and applying preset correction values ​​for the fuel injection quantity. These data and correction values ​​enable the fuel injection quantity of the injectors to be adjusted according to real-time environmental changes, ensuring that the engine's output power remains within design limits while meeting performance and emission requirements.

[0036] Step S202: If the intake pressure is greater than the intake pressure target value, determine whether the intake pressure is greater than the intake pressure threshold. If the intake pressure is greater than the intake pressure threshold, reduce the fuel injection quantity of the injector to a preset range that matches the engine design power.

[0037] Specifically, the engine's intake pressure is continuously monitored and compared to a preset target value. This target value is the intake pressure expected under ideal engine operating conditions, typically determined through bench calibration tests and other design parameters to ensure efficient and stable engine operation. If the monitored intake pressure exceeds the target value, further checks are conducted to determine if it exceeds an intake pressure threshold. The intake pressure threshold is a safety limit to prevent potential engine damage from excessively high intake pressure. For example, excessively high intake pressure may indicate a blocked intake system or a malfunctioning turbocharger, leading to excessive air entering the engine and insufficient fuel injection for complete combustion. This can potentially cause overheating, accelerated wear, or other mechanical failures in engine components.

[0038] Once it is confirmed that the intake pressure not only exceeds the target value but also surpasses the intake pressure threshold, a protection mechanism is immediately activated. This mechanism reduces the engine's output power by decreasing the amount of fuel injected by the injectors. This adjustment aims to bring the engine's actual operating state back to a safe range that matches its design power. The preset range refers to the range of fuel injection quantities within which the engine can operate safely under various environmental conditions without exceeding its design power. This range is typically determined through calibration tests, ensuring that the engine maintains its predetermined performance level even under extreme environmental conditions. In this way, even in the event of sudden, unexpected environmental changes or system failures, the system can respond promptly, protecting the engine from damage while ensuring that the engine's output power does not exceed safety and design limits. This improves the engine's reliability and durability throughout its entire operating cycle.

[0039] Step S203: When the intake pressure is less than or equal to the intake pressure threshold, the fuel injection quantity is adjusted to a corresponding range based on the ambient pressure and the ambient temperature, and the corresponding range is determined based on the correction value of the fuel injection quantity.

[0040] Specifically, when the engine's intake pressure is less than or equal to the preset intake pressure threshold, it means the engine is in a normal or relatively ideal operating state and does not face the risk of intake system overpressure. However, the actual operating performance of the engine is also affected by ambient pressure and temperature, especially under high altitude and low temperature conditions. Therefore, even if the intake pressure does not exceed the intake pressure threshold, it is still necessary to finely adjust the fuel injection quantity of the injectors according to the current environmental conditions to ensure that the engine's output power and efficiency remain at their optimal levels while meeting emission standards. The fuel injection quantity is adjusted to a corresponding range based on ambient pressure and temperature. This "corresponding range" refers to the fuel injection quantity interval that matches the current environmental conditions. This interval is defined by the correction values ​​for the fuel injection quantity determined by bench calibration tests. Suitable parameters are found within the preset correction values ​​based on ambient pressure and temperature, and then the fuel injection quantity is adjusted based on these parameters to fall within a range that meets engine performance requirements while ensuring safe and stable engine operation under the current environment.

[0041] This environmentally-based fuel injection quantity adjustment strategy not only adapts to the impact of different environmental conditions on engine performance but also ensures that the engine maintains its optimal operating condition under various environmental conditions, avoiding performance degradation or excessive wear caused by environmental factors. This is particularly important for non-road mobile machinery such as mining equipment that needs to operate in variable environments, significantly improving its operating efficiency and reliability while reducing maintenance costs.

[0042] This embodiment monitors the vehicle's operating environment in real time, including ambient temperature, ambient pressure, and intake pressure. Based on the fuel injection quantity correction value obtained from bench calibration tests, it can intelligently determine whether the intake pressure is approaching a dangerous threshold when it exceeds the target value. This allows for precise adjustment of the fuel injection quantity, ensuring the engine always operates within a safe range appropriate to its design power. Under normal or specific environments (such as low temperatures and high altitudes), it can automatically adapt to environmental changes, maintaining stable engine output power by adjusting the fuel injection quantity. This effectively prevents engine overload or performance degradation caused by changes in environmental conditions or injector performance deterioration, thus solving the problem that existing fuel injection quantity control strategies often fail to guarantee engine power within design limits.

[0043] In the specific implementation process, obtaining the correction value of the above-mentioned fuel injection quantity includes: within the above-mentioned first temperature range, obtaining the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values, and determining the correction value of the above-mentioned fuel injection quantity within the above-mentioned first temperature range based on the above-mentioned first intake pressure values ​​and the above-mentioned intake pressure target values; within the above-mentioned second temperature range, obtaining the second intake pressure values ​​of the engine at different speeds and torques, and determining the correction value of the above-mentioned fuel injection quantity within the above-mentioned second temperature range based on the above-mentioned second intake pressure values ​​and the above-mentioned intake pressure target values, wherein the minimum value within the above-mentioned first temperature range is greater than the maximum value within the above-mentioned second temperature range; within the above-mentioned first altitude range, obtaining the third intake pressure values ​​of the engine at different speeds and torques, and determining the correction value of the above-mentioned fuel injection quantity within the above-mentioned first altitude range based on the above-mentioned third intake pressure values ​​and the above-mentioned intake pressure target values.

[0044] The above describes how to determine the injection quantity correction value of the injector based on different environmental conditions (temperature and altitude) to ensure that the engine can operate stably and efficiently in various environments. Specifically, within a first temperature range (normal temperature in this embodiment), the standard power output and corresponding first intake pressure values ​​of the engine at different speeds and torques are obtained through bench calibration tests. The first intake pressure value reflects the intake pressure required for the engine to reach standard power under specific temperature conditions. Based on these data, by comparing the first intake pressure value with the target intake pressure value (i.e., the intake pressure value when the engine operates under ideal conditions), the injection quantity correction value within the first temperature range can be calculated. The purpose of calculating the injection quantity correction value within the first temperature range is to compensate for engine performance differences caused by temperature changes, ensuring that the engine can maintain its designed output power and combustion efficiency even in high-temperature environments.

[0045] Similarly, within a second temperature range (typically lower temperatures, such as -10°C), the second intake pressure values ​​are obtained at different engine speeds and torques. The minimum value within the first temperature range is greater than the maximum value within the second temperature range, meaning the second temperature range covers even lower temperatures. Based on the second intake pressure value and the target intake pressure value, a correction value for the fuel injection quantity within the second temperature range is determined. Increased air density at low temperatures necessitates adjustments to the fuel injection quantity to maintain engine combustion temperature and output power; the determination of the fuel injection quantity correction value within the second temperature range is also to compensate for the impact of ambient temperature changes on engine performance.

[0046] Within the first altitude range (e.g., high-altitude areas, 2000 meters and above), the third intake pressure values ​​of the engine at different speeds and torques are obtained through bench calibration tests. The thin air and reduced air density at high altitudes significantly impact the engine's combustion process. Based on the third intake pressure value and the target intake pressure value, a correction value for the fuel injection quantity within the first altitude range can be determined. This correction value is calculated to compensate for the effects of the high-altitude environment on engine performance, ensuring that the engine can maintain stable power output and combustion efficiency even in low-oxygen environments.

[0047] The above describes a fuel injection quantity correction mechanism that dynamically adjusts the engine's fuel injection quantity based on changes in ambient temperature and altitude to maintain optimal engine performance under various conditions. Specifically, within a first temperature range (normal temperature environment) and a second temperature range (low temperature environment), correction values ​​for the fuel injection quantity are determined for the engine's standard power output and intake pressure under different speed and torque conditions. This ensures that the engine maintains stable power output and combustion efficiency despite temperature variations. Simultaneously, for high-altitude environments within the first altitude range, a third intake pressure value is obtained and a corresponding correction value is determined to compensate for the impact of thin air on engine performance, ensuring reliable engine operation in low-oxygen environments. Through precise bench calibration tests, fuel injection quantity correction values ​​matched to environmental conditions are pre-calculated and stored. Therefore, during actual engine operation, the fuel injection quantity can be quickly and accurately adjusted based on real-time monitored environmental parameters, improving the engine's adaptability, stability, and economy. This is particularly suitable for equipment such as mining machinery that needs to operate for extended periods in extreme or variable environments. This environmentally-based adaptive fuel injection control strategy effectively solves the problem of engine performance fluctuations caused by environmental changes, providing an important guarantee for the efficient and safe operation of the engine in complex environments.

[0048] Further, within the aforementioned first temperature range, the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values ​​are obtained, and a correction value for the fuel injection quantity within the aforementioned first temperature range is determined based on the aforementioned first intake pressure value and the aforementioned intake pressure target value. This includes: within the aforementioned first temperature range, obtaining the aforementioned standard power output of the engine at different speeds and torques and the corresponding first intake pressure values ​​through the aforementioned bench calibration test; determining the average intake pressure when the engine reaches the design power target as the aforementioned intake pressure target value; calculating the deviation between each of the aforementioned first intake pressure values ​​and the aforementioned intake pressure target value to obtain multiple deviation values; and determining the correction value for the fuel injection quantity within the aforementioned first temperature range based on the multiple aforementioned deviation values.

[0049] Specifically, within a first temperature range, standard power output and corresponding first intake pressure values ​​at different speeds and torques are obtained through bench calibration tests. These bench calibration tests are conducted in a controlled laboratory environment, accurately simulating various operating conditions, including high speed, low speed, high torque, low torque, and different temperature conditions. Through these tests, performance data of the engine under high-temperature conditions, such as power curves and intake pressure curves, can be obtained. The average intake pressure value at the engine's design power target is determined as the intake pressure target value. The design power target value refers to the power output that the engine should achieve under rated conditions. In the bench test, when the engine reaches this power output, the corresponding intake pressure value is recorded, and then the average of all these values ​​is calculated to obtain the intake pressure target value. This value serves as a benchmark in subsequent control logic, used to evaluate and adjust the difference between the actual intake pressure and the desired value.

[0050] The deviations between the first intake pressure value measured at different speeds and torques and the target intake pressure value were calculated, resulting in a series of deviation values. These deviation values ​​reflect how much the intake pressure may differ from the target value during actual engine operation. A positive deviation (i.e., intake pressure higher than the target value) means that the fuel injection quantity needs to be reduced to prevent overload and overheating, while a negative deviation (intake pressure lower than the target value) requires an increase in the fuel injection quantity to maintain sufficient combustion efficiency and power output.

[0051] Furthermore, determining the correction value of the fuel injection quantity within the first temperature range based on multiple deviation values ​​includes: obtaining a preset fuel injection quantity adjustment coefficient, which is determined based on the engine characteristics and test data; and calculating the correction value of the fuel injection quantity within the first temperature range based on the preset fuel injection quantity adjustment coefficient and the deviation values.

[0052] Specifically, the preset fuel injection quantity adjustment coefficient is a parameter determined based on engine characteristics and preliminary bench calibration test data. This parameter reflects the degree to which changes in engine intake pressure affect fuel injection quantity requirements under specific temperature conditions. During the bench calibration phase, a large amount of data on the relationship between intake pressure and fuel injection quantity was collected through performance tests of the engine at different temperatures, speeds, and torques. Based on this data, statistical methods, physical models, or machine learning algorithms were then used to calculate and determine the preset fuel injection quantity adjustment coefficient. This coefficient incorporates information on the engine's temperature sensitivity and adaptability to fuel injection quantity requirements. During real-time operation, the engine's intake pressure is continuously monitored and compared with the preset intake pressure target value to calculate the deviation. Next, the preset fuel injection quantity adjustment coefficient is combined with the current deviation value to calculate the correction value for the fuel injection quantity within a first temperature range. This calculation process follows mathematical formulas or algorithms, such as simple proportional relationships or more complex nonlinear models, to ensure that the fuel injection quantity adjustment accurately reflects changes in intake pressure while adapting to the engine's specific performance requirements within that temperature range.

[0053] Through the above steps, precise control of engine fuel injection quantity is achieved, especially in the face of changes in ambient temperature. The existence of a preset fuel injection quantity adjustment coefficient allows for a rapid response upon detecting a deviation between the intake pressure and the target value, adjusting the fuel injection quantity to the optimal value that matches the current environmental conditions. This not only improves the engine's adaptability and operating efficiency under different temperature conditions but also effectively avoids performance degradation and potential malfunctions caused by temperature changes, such as abnormal injector wear or engine overheating. For equipment such as mining machinery that needs to cope with extreme environmental challenges, this adaptive fuel injection quantity control strategy greatly enhances its operational stability and safety under high-temperature conditions, while also helping to optimize fuel consumption, reduce carbon emissions, and meet increasingly stringent environmental requirements. In summary, the flexibility, accuracy, and environmental adaptability of this embodiment provide strong support for the high-performance operation of engines in complex environments.

[0054] This embodiment calibrates the engine on a bench within a preset first temperature range, enabling the acquisition of standard power output and corresponding first intake pressure values ​​under different speeds and torque conditions. These data points enrich the engine's performance characteristics in high-temperature environments, providing a foundation for subsequent control strategies. The average intake pressure at the engine's design power target state is established as the intake pressure target value. The design power target refers to the engine's rated power or power output under optimal operating conditions. Setting the average intake pressure target value aims to provide an ideal reference point for engine operation within the first temperature range, ensuring engine performance stability and optimized combustion efficiency. By comparing the first intake pressure value obtained from the experiment with the intake pressure target value, a series of deviation values ​​are calculated. Calculating these deviation values ​​is a crucial step in evaluating the difference between the engine's actual operating state and its ideal state, directly reflecting the degree of influence of ambient temperature changes on intake pressure and engine performance. Based on the obtained deviation values, correction values ​​for the fuel injection quantity within the first temperature range are determined using a specific algorithm or model. This process aims to ensure that the adjustment of fuel injection quantity can accurately compensate for intake pressure fluctuations caused by temperature changes, maintain engine power output within the predetermined design limits, optimize the combustion process, and avoid faults such as piston overheating and damper damage, thereby significantly improving the reliability and economy of the engine in high-temperature environments.

[0055] In some embodiments of this application, when the intake pressure is less than or equal to the intake pressure threshold, the fuel injection quantity is adjusted to a corresponding range based on the ambient pressure and the ambient temperature. The corresponding range is determined based on the correction value of the fuel injection quantity. This includes: when the intake pressure is less than or equal to the intake pressure threshold, determining whether the ambient pressure falls within the first altitude range; if it falls within the first altitude range, adjusting the fuel injection quantity based on the correction value of the fuel injection quantity within the first altitude range; if it does not fall within the first altitude range but falls within the first temperature range, adjusting the fuel injection quantity based on the correction value of the fuel injection quantity within the first temperature range; if it does not fall within the first altitude range but falls within the second temperature range, adjusting the fuel injection quantity based on the correction value of the fuel injection quantity within the second temperature range.

[0056] The above further details how to adjust the engine fuel injection quantity based on ambient pressure and temperature under specific environmental conditions (i.e., intake pressure less than or equal to the intake pressure threshold). The core principle is to precisely control the fuel injection quantity based on correction values ​​for different environmental parameters, ensuring stable engine operation and maintaining within the design power range under various conditions. Specifically, when the intake pressure is less than or equal to the intake pressure threshold, the current ambient pressure is first checked. If the ambient pressure indicates the engine is in the first altitude range (referring to high-altitude environments, such as 2000 meters and above), then the engine's fuel injection quantity is adjusted based on the correction value determined from previous bench tests conducted in high-altitude environments. This adjustment considers the impact of thin air at high altitudes on engine intake and combustion efficiency, compensating for insufficient oxygen by increasing the fuel injection quantity, ensuring the engine can maintain sufficient power output and stable operation in high-altitude environments.

[0057] If the engine is not operating within the first altitude range, the ambient temperature will be further checked. If the current ambient temperature is within the first temperature range (referring to normal temperature), the fuel injection quantity will be adjusted based on the correction value obtained under this temperature condition. This adjustment strategy takes into account the impact of high-temperature environments on engine performance, such as potentially increased combustion chamber temperature and decreased efficiency. By reducing the fuel injection quantity, it avoids engine overheating and over-combustion, thereby protecting the engine from damage caused by high temperatures.

[0058] If the engine is neither in the first altitude range nor the first temperature range, but in the second temperature range (referring to a low-temperature environment), then the fuel injection quantity should be adjusted based on the correction value determined by bench tests conducted in a low-temperature environment. Low temperatures can affect fuel viscosity and volatility, thus impacting engine starting and operating performance. By adjusting the fuel injection quantity, it is possible to ensure the engine can start quickly and operate stably under low-temperature conditions, avoiding incomplete combustion due to poor fuel atomization, thereby reducing engine cold start time and optimizing overall performance.

[0059] By applying preset correction values ​​for fuel injection quantity under different environmental conditions, the engine's fuel injection quantity is adjusted, ensuring its stability and efficiency in various complex environments. The intake pressure threshold serves as a trigger condition, enabling rapid response even at low intake pressures. By determining ambient pressure and temperature, the most suitable fuel injection quantity adjustment strategy is selected. This environmentally adaptable fuel injection quantity control method not only improves engine operating efficiency but also extends its service life, particularly in mining machinery and other heavy equipment, maintaining high levels of performance and reliability in the face of changing environmental challenges. Overall, through refined control logic, the engine achieves optimal power output and combustion efficiency under different temperature and altitude conditions.

[0060] Furthermore, if the engine is within the first altitude range, the fuel injection quantity is adjusted based on the correction value of the fuel injection quantity within the first altitude range, including: if the engine is within the first altitude range, obtaining the current engine speed and current torque; matching the corresponding correction value among the correction values ​​of the fuel injection quantity within the first altitude range according to the current engine speed and current torque to obtain a target correction value; and adjusting the fuel injection quantity according to the target correction value.

[0061] Specifically, when the engine's operating environment is detected to meet the conditions of the first altitude range, the engine's current speed and torque are acquired. These parameters are important indicators of the engine's operating status, reflecting its actual workload and speed. The combination of speed and torque can be considered a representation of the engine's "operating point." Based on the current speed and torque, the corresponding correction value is searched in a database of fuel injection quantity correction values ​​established beforehand through bench calibration tests. This database contains correction information for the required fuel injection quantity under different engine operating conditions within the first altitude range, and is constructed through extensive experimental data and analysis results. The matching process essentially finds the correction value closest to the current engine operating point in the database. This operation is designed based on the engine performance variation patterns under environmental pressure, ensuring the accuracy and applicability of the correction value. Based on the target correction value obtained through matching, the engine's fuel injection quantity is adjusted. This means that if the current environment is at a high altitude, to compensate for the impact of less oxygen in the air on combustion efficiency, the injectors will be instructed to appropriately increase the fuel injection quantity to ensure that the engine reaches its designed power target and maintains stable operation. This adjustment based on real-time operating parameters and environmental conditions can automatically adapt to high-altitude environments without human intervention, preventing engine performance degradation due to thin air and thus ensuring the reliability and efficiency of heavy equipment such as mining machinery in high-altitude areas.

[0062] This embodiment significantly enhances the engine's adaptability and performance stability in high-altitude environments. When the engine is determined to be in the first altitude range (i.e., a high-altitude region), the current operating state of the engine is accurately located by acquiring real-time engine speed and torque data. Based on a database of fuel injection quantity correction values ​​obtained through bench calibration tests under high-altitude conditions, the correction value that best matches the current operating parameters can be quickly matched. This target correction value takes into account the impact of reduced air density on engine combustion efficiency at high altitudes. The fuel injection quantity is precisely adjusted to this target correction value, effectively compensating for the adverse effects of thin oxygen, ensuring that the engine can maintain its design power and optimal operating state even in high-altitude environments. This avoids performance degradation and component damage that may result from incomplete combustion, thereby greatly improving the reliability and economy of heavy equipment such as mining machinery operating in high-altitude areas.

[0063] In some other embodiments of this application, when the intake pressure is greater than the intake pressure threshold, reducing the fuel injection quantity of the injector to a preset range that matches the engine design power includes: when the intake pressure is greater than the intake pressure threshold, calculating the difference between the current fuel injection quantity of the injector and the fuel injection quantity that matches the engine design power to obtain a first difference; and reducing the fuel injection quantity to the preset range based on the first difference.

[0064] Specifically, the above mainly addresses situations where the engine intake pressure exceeds the intake pressure threshold. This often occurs at low altitudes or in non-extreme environments, where air density is relatively high and intake volume is sufficient. This can lead to the engine generating excessive power at the standard fuel injection quantity, potentially damaging engine components such as piston overheating and shock absorber cracking. To address this issue and ensure the engine operates within its safe and efficient design power range, if the intake pressure exceeds the threshold, the difference between the current injector's fuel injection quantity and the ideal fuel injection quantity at the engine's design power is calculated—the first difference. The ideal fuel injection quantity is predetermined through calibration tests based on the engine's design power and the intake pressure under standard environmental conditions. By comparing the current fuel injection quantity with the ideal fuel injection quantity, the deviation between the current injection strategy and design requirements can be quantified, providing a basis for subsequent adjustments. Based on the calculated first difference, the fuel injection quantity is reduced to ensure it is adjusted to a preset range that matches the engine's design power. This adjustment process aims to reduce the engine's actual power output by decreasing the amount of fuel injected, bringing it back to the designed power level and thus avoiding mechanical failures caused by excessive power. The preset range is set based on the engine's performance characteristics and safe operating boundaries, ensuring that the adjusted fuel injection quantity meets the engine's power requirements without causing other problems such as incomplete combustion or reduced efficiency.

[0065] By monitoring intake pressure in real time and dynamically adjusting fuel injection quantity, the safe operation and efficiency of the engine are ensured in low-altitude or non-extreme environments. When abnormally high intake pressure is detected, the system responds quickly, calculating the difference to identify the necessity for fuel injection quantity adjustment. Based on this difference, it precisely reduces the fuel injection quantity, stabilizing the engine's operating state within a preset safe range and avoiding mechanical damage and resource waste caused by excessive power. This strategy not only improves engine stability and durability but also promotes fuel economy and emission control, achieving comprehensive optimization of the engine under various environmental conditions, enabling it to maintain optimal performance at different altitudes and temperatures.

[0066] Fuel injectors are prone to wear under long-term heavy-load operation, leading to unstable fuel injection volume and affecting engine performance. While current control strategies can cope with changes in environmental factors, they do not consider the wear of fuel injectors over time. In some embodiments of this application, machine learning algorithms are introduced to predict the degree of fuel injector wear by learning from historical engine operating data (such as fuel injection volume, engine speed, torque, and intake pressure). Based on the prediction results, the fuel injection volume is automatically adjusted to compensate for changes in fuel injection volume caused by wear, ensuring the engine remains stable within its design power range over the long term. Furthermore, this mechanism can provide early warning of potential fuel injector failure risks, enabling timely maintenance or replacement, preventing major accidents caused by fuel injector failure, and improving the maintainability and operational efficiency of mining machinery.

[0067] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the fuel injection quantity control method of this application will be described in detail below with reference to specific embodiments.

[0068] This embodiment relates to a specific method for controlling the amount of fuel injected, such as... Figure 3 As shown. This embodiment adjusts the fuel injection quantity of the injector by monitoring the engine intake pressure, thereby regulating the engine power. The strategy of this embodiment mainly includes the following three parts:

[0069] 1) Normal temperature environment control: Adjust the engine power under normal temperature environment;

[0070] 2) Low-temperature environment correction: Adjusting engine power in low-temperature environments;

[0071] 3) High-altitude environment correction: Adjust engine power in high-altitude environments.

[0072] To achieve control over the above three environments, the specific approach is as follows:

[0073] 1) Normal temperature environment bench injector injection quantity correction calibration test: Obtain the engine power under normal temperature environment, as well as the intake pressure value at various engine speeds and torques. Record the normally calibrated intake pressure as P (i.e., the intake pressure target value). Use the intake pressure under normal temperature environment as the setting target for injector injection quantity adjustment, and complete the setting calibration of injection quantity for different intake pressures.

[0074] 2) Calibration of injector injection quantity correction on bench under low temperature environment (-10℃): Based on different low temperature environment temperatures, obtain the intake pressure at different speeds and torques, and based on the target value of intake pressure P, obtain the injector injection quantity adjustment value based on intake pressure correction at different temperatures.

[0075] 3) Injector injection quantity correction calibration in high-altitude environment (altitude 2000m and above): Based on different altitudes, obtain the intake pressure at different speeds and torques, and based on the target intake pressure value P, obtain the injector injection quantity adjustment value at different altitudes.

[0076] 4) Safety auxiliary judgment strategy: If the intake pressure is too high, it will cause a major malfunction to the engine in a short period of time. Set the intake pressure alarm monitoring value Plim (intake pressure threshold). When the intake pressure exceeds Plim, the engine will directly perform torque limiting protection and alarm to indicate abnormal intake pressure.

[0077] During vehicle operation, the engine monitors parameters such as ambient temperature, ambient pressure, and intake pressure in real time. In high-altitude environments, the engine determines fuel injection based on ambient pressure; in low-temperature environments, it determines fuel injection based on ambient temperature. The fuel injector quantity is adjusted according to the application boundaries.

[0078] 1) Determine whether the intake pressure exceeds the intake pressure target value P. If it exceeds the intake pressure target value, determine whether it exceeds the intake pressure threshold Plim. If it does, execute the safety auxiliary judgment strategy. If it does not exceed the intake pressure threshold Plim, execute the correction strategy based on the judgment of ambient temperature and ambient pressure.

[0079] 2) First, determine whether the environmental pressure is at a high altitude. If it is, then implement a high altitude correction strategy.

[0080] 3) If the environmental pressure is normal and the environment is at room temperature, activate the room temperature environment correction strategy.

[0081] 4) If the environmental pressure is normal and the environment is in a low temperature environment, activate the low temperature environment correction strategy.

[0082] This embodiment monitors intake pressure and adjusts the fuel injection quantity of the engine injectors to achieve engine power control in extreme environments such as normal temperature, low temperature, and high altitude, thus ensuring engine reliability.

[0083] While current control strategies consider the influence of environmental pressure and temperature on fuel injection quantity, adjusting a single parameter is insufficient to meet optimal control requirements when dealing with complex operating conditions. For example, combined environmental factors such as humidity, altitude, and temperature, as well as engine load, may require more detailed adjustments to the fuel injection quantity. Therefore, some embodiments of this application introduce an integrated multi-parameter linkage control algorithm. This algorithm can simultaneously monitor and comprehensively analyze multiple engine operating parameters and environmental conditions (such as temperature, pressure, humidity, altitude, and real-time engine load), and automatically adjust the fuel injection quantity and other related parameters (such as ignition timing and turbocharger pressure) through real-time data interaction to optimize engine performance under complex operating conditions. This linkage control strategy not only ensures stable engine power output under any environmental conditions but also further optimizes combustion efficiency, reduces fuel consumption and emissions, and improves the overall economic and environmental performance of mining machinery.

[0084] This application also provides a fuel injection quantity control device. It should be noted that the fuel injection quantity control device of this application embodiment can be used to execute the fuel injection quantity control method provided in this application embodiment. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0085] The following describes the fuel injection quantity control device provided in the embodiments of this application.

[0086] Figure 4 This is a structural block diagram of a fuel injection quantity control device according to an embodiment of this application. Figure 4As shown, the device includes an acquisition unit 10, a first processing unit 20, and a second processing unit 30. The acquisition unit acquires vehicle operating information and correction values ​​for the fuel injection quantity of the injectors. The vehicle operating information includes ambient temperature, ambient pressure, and intake air pressure. The correction values ​​for the fuel injection quantity include correction values ​​for fuel injection quantities within a first temperature range, a second temperature range, and a first altitude range. Each of these correction values ​​is determined based on bench calibration tests. The first processing unit determines whether the intake air pressure exceeds an intake air pressure threshold when the intake air pressure exceeds a target value. If the intake air pressure exceeds the intake air pressure threshold, the first processing unit reduces the fuel injection quantity of the injectors to a preset range matching the engine's design power. The second processing unit adjusts the fuel injection quantity to a corresponding range based on the ambient pressure and ambient temperature when the intake air pressure is less than or equal to the intake air pressure threshold. This corresponding range is determined based on the correction values ​​for the fuel injection quantity.

[0087] This embodiment monitors the vehicle's operating environment in real time, including ambient temperature, ambient pressure, and intake pressure. Based on the fuel injection quantity correction value obtained from bench calibration tests, it can intelligently determine whether the intake pressure is approaching a dangerous threshold when it exceeds the target value. This allows for precise adjustment of the fuel injection quantity, ensuring the engine always operates within a safe range appropriate to its design power. Under normal or specific environments (such as low temperatures and high altitudes), it can automatically adapt to environmental changes, maintaining stable engine output power by adjusting the fuel injection quantity. This effectively prevents engine overload or performance degradation caused by changes in environmental conditions or injector performance deterioration, thus solving the problem that existing fuel injection quantity control strategies often fail to guarantee engine power within design limits.

[0088] In specific implementation, the aforementioned acquisition unit includes a first acquisition module, a second acquisition module, and a third acquisition module. The first acquisition module is used to acquire the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values ​​within the first temperature range, and to determine a correction value for the fuel injection quantity within the first temperature range based on the first intake pressure value and the target intake pressure value. The second acquisition module is used to acquire the second intake pressure values ​​of the engine at different speeds and torques within the second temperature range, and to determine a correction value for the fuel injection quantity within the second temperature range based on the second intake pressure value and the target intake pressure value, wherein the minimum value within the first temperature range is greater than the maximum value within the second temperature range. The third acquisition module is used to acquire the third intake pressure values ​​of the engine at different speeds and torques within the first altitude range, and to determine a correction value for the fuel injection quantity within the first altitude range based on the third intake pressure value and the target intake pressure value.

[0089] The above describes a fuel injection quantity correction mechanism that dynamically adjusts the engine's fuel injection quantity based on changes in ambient temperature and altitude to maintain optimal engine performance under various conditions. Specifically, within a first temperature range (normal temperature environment) and a second temperature range (low temperature environment), correction values ​​for the fuel injection quantity are determined for the engine's standard power output and intake pressure under different speed and torque conditions. This ensures that the engine maintains stable power output and combustion efficiency despite temperature variations. Simultaneously, for high-altitude environments within the first altitude range, a third intake pressure value is obtained and a corresponding correction value is determined to compensate for the impact of thin air on engine performance, ensuring reliable engine operation in low-oxygen environments. Through precise bench calibration tests, fuel injection quantity correction values ​​matched to environmental conditions are pre-calculated and stored. Therefore, during actual engine operation, the fuel injection quantity can be quickly and accurately adjusted based on real-time monitored environmental parameters, improving the engine's adaptability, stability, and economy. This is particularly suitable for equipment such as mining machinery that needs to operate for extended periods in extreme or variable environments. This environmentally-based adaptive fuel injection control strategy effectively solves the problem of engine performance fluctuations caused by environmental changes, providing an important guarantee for the efficient and safe operation of the engine in complex environments.

[0090] Further, the aforementioned first acquisition module includes a first acquisition submodule, a first determination submodule, a calculation submodule, and a second determination submodule. The first acquisition submodule is used to acquire the standard power output and corresponding first intake pressure values ​​of the engine at different speeds and torques within the aforementioned first temperature range through the aforementioned bench calibration test; the first determination submodule is used to determine the average intake pressure when the engine reaches its design power target as the aforementioned intake pressure target value; the calculation submodule is used to calculate the deviation between each of the aforementioned first intake pressure values ​​and the aforementioned intake pressure target value, obtaining multiple deviation values; the second determination submodule is used to determine the correction value of the fuel injection quantity within the aforementioned first temperature range based on the multiple aforementioned deviation values.

[0091] Furthermore, the second determining submodule is used to obtain a preset fuel injection quantity adjustment coefficient, which is determined based on the engine characteristics and test data; and to calculate the correction value of the fuel injection quantity within the first temperature range based on the preset fuel injection quantity adjustment coefficient and the deviation value.

[0092] The above embodiments achieve precise control of engine fuel injection quantity, especially in the face of changes in ambient temperature. The existence of a preset fuel injection quantity adjustment coefficient allows for a rapid response upon detecting a deviation between the intake pressure and the target value, adjusting the fuel injection quantity to the optimal value that matches the current environmental conditions. This not only improves the engine's adaptability and operating efficiency under different temperature conditions but also effectively avoids performance degradation and potential malfunctions caused by temperature changes, such as abnormal injector wear or engine overheating. For equipment such as mining machinery that needs to cope with extreme environmental challenges, this adaptive fuel injection quantity control strategy greatly enhances its operational stability and safety under high-temperature conditions, while also helping to optimize fuel consumption, reduce carbon emissions, and meet increasingly stringent environmental protection requirements. In summary, the flexibility, precision, and environmental adaptability of this embodiment provide strong support for the high-performance operation of engines in complex environments.

[0093] This embodiment calibrates the engine on a bench within a preset first temperature range, enabling the acquisition of standard power output and corresponding first intake pressure values ​​under different speeds and torque conditions. These data points enrich the engine's performance characteristics in high-temperature environments, providing a foundation for subsequent control strategies. The average intake pressure at the engine's design power target state is established as the intake pressure target value. The design power target refers to the engine's rated power or power output under optimal operating conditions. Setting the average intake pressure target value aims to provide an ideal reference point for engine operation within the first temperature range, ensuring engine performance stability and optimized combustion efficiency. By comparing the first intake pressure value obtained from the experiment with the intake pressure target value, a series of deviation values ​​are calculated. Calculating these deviation values ​​is a crucial step in evaluating the difference between the engine's actual operating state and its ideal state, directly reflecting the degree of influence of ambient temperature changes on intake pressure and engine performance. Based on the obtained deviation values, correction values ​​for the fuel injection quantity within the first temperature range are determined using a specific algorithm or model. This process aims to ensure that the adjustment of fuel injection quantity can accurately compensate for intake pressure fluctuations caused by temperature changes, maintain engine power output within the predetermined design limits, optimize the combustion process, and avoid faults such as piston overheating and damper damage, thereby significantly improving the reliability and economy of the engine in high-temperature environments.

[0094] In some embodiments of this application, the second processing unit includes a first adjustment module, a second adjustment module, and a third adjustment module. The first adjustment module is used to determine whether the ambient pressure falls within the first altitude range when the intake pressure is less than or equal to the intake pressure threshold. If the ambient pressure falls within the first altitude range, the module adjusts the fuel injection quantity based on a correction value for the fuel injection quantity within the first altitude range. The second adjustment module is used to adjust the fuel injection quantity based on a correction value for the fuel injection quantity within the first temperature range if the ambient pressure falls outside the first altitude range but falls within the first temperature range. The third adjustment module is used to adjust the fuel injection quantity based on a correction value for the fuel injection quantity within the second temperature range if the ambient pressure falls outside the first altitude range but falls within the second temperature range.

[0095] By applying preset correction values ​​for fuel injection quantity under different environmental conditions, the engine's fuel injection quantity is adjusted, ensuring its stability and efficiency in various complex environments. The intake pressure threshold serves as a trigger condition, enabling rapid response even at low intake pressures. By determining ambient pressure and temperature, the most suitable fuel injection quantity adjustment strategy is selected. This environmentally adaptable fuel injection quantity control method not only improves engine operating efficiency but also extends its service life, particularly in mining machinery and other heavy equipment, maintaining high levels of performance and reliability in the face of changing environmental challenges. Overall, through refined control logic, the engine achieves optimal power output and combustion efficiency under different temperature and altitude conditions.

[0096] Furthermore, the aforementioned first adjustment module includes a second acquisition submodule, a matching submodule, and an adjustment submodule. The second acquisition submodule is used to acquire the current engine speed and current torque if the engine is within the aforementioned first altitude range; the matching submodule is used to match the corresponding correction value among the correction values ​​of the fuel injection quantity within the aforementioned first altitude range based on the aforementioned current engine speed and the aforementioned current torque, to obtain a target correction value; the adjustment submodule is used to adjust the aforementioned fuel injection quantity according to the aforementioned target correction value.

[0097] This embodiment significantly enhances the engine's adaptability and performance stability in high-altitude environments. When the engine is determined to be in the first altitude range (i.e., a high-altitude region), the current operating state of the engine is accurately located by acquiring real-time engine speed and torque data. Based on a database of fuel injection quantity correction values ​​obtained through bench calibration tests under high-altitude conditions, the correction value that best matches the current operating parameters can be quickly matched. This target correction value takes into account the impact of reduced air density on engine combustion efficiency at high altitudes. The fuel injection quantity is precisely adjusted to this target correction value, effectively compensating for the adverse effects of thin oxygen, ensuring that the engine can maintain its design power and optimal operating state even in high-altitude environments. This avoids performance degradation and component damage that may result from incomplete combustion, thereby greatly improving the reliability and economy of heavy equipment such as mining machinery operating in high-altitude areas.

[0098] In some other embodiments of this application, the first processing unit includes a calculation module and a reduction module. The calculation module is used to calculate the difference between the current injection quantity of the injector and the injection quantity matched with the engine design power when the intake pressure is greater than the intake pressure threshold, and obtain a first difference; the reduction module is used to reduce the injection quantity to the preset range according to the first difference.

[0099] By monitoring intake pressure in real time and dynamically adjusting fuel injection quantity, the safe operation and efficiency of the engine are ensured in low-altitude or non-extreme environments. When abnormally high intake pressure is detected, the system responds quickly, calculating the difference to identify the necessity for fuel injection quantity adjustment. Based on this difference, it precisely reduces the fuel injection quantity, stabilizing the engine's operating state within a preset safe range and avoiding mechanical damage and resource waste caused by excessive power. This strategy not only improves engine stability and durability but also promotes fuel economy and emission control, achieving comprehensive optimization of the engine under various environmental conditions, enabling it to maintain optimal performance at different altitudes and temperatures.

[0100] The aforementioned fuel injection quantity control device includes a processor and a memory. The aforementioned acquisition unit, first processing unit, second processing unit, etc., are all stored as program units in the memory, and the processor executes the aforementioned program units stored in the memory to achieve the corresponding functions. All of the aforementioned modules are located in the same processor; or, the aforementioned modules are located in different processors in any combination.

[0101] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0102] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the fuel injection quantity control method.

[0103] This invention provides a processor for running a program, wherein the program executes the fuel injection quantity control method during operation.

[0104] This invention provides an electronic device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps of the above-described fuel injection quantity control method. The device described herein can be a server, PC, PAD, mobile phone, etc.

[0105] This application also provides a computer program product that, when executed on a data processing device, is adapted to perform a program that initializes a control method step having at least the above-described fuel injection quantity.

[0106] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0107] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0108] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0109] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0110] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0111] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0112] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0113] Computer-readable media include both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] It should also be noted that the terms "comprising," "including," or any other variations thereof are 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 process, method, article, or apparatus. Unless otherwise specified, 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 that element.

[0116] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for controlling the amount of fuel injected, used to control the amount of fuel injected by a fuel injector, characterized in that, The control method includes: The vehicle operating information and the correction value of the fuel injection quantity of the injector are obtained. The vehicle operating information includes ambient temperature, ambient pressure and intake pressure. The correction value of the fuel injection quantity includes the correction value of the fuel injection quantity within a first temperature range, the correction value of the fuel injection quantity within a second temperature range and the correction value of the fuel injection quantity within a first altitude range. Each of the correction values ​​of the fuel injection quantity is determined based on bench calibration tests. If the intake pressure is greater than the intake pressure target value, determine whether the intake pressure is greater than the intake pressure threshold. If the intake pressure is greater than the intake pressure threshold, reduce the fuel injection quantity of the injector to a preset range that matches the engine design power. When the intake pressure is less than or equal to the intake pressure threshold, the fuel injection quantity is adjusted to a corresponding range based on the ambient pressure and the ambient temperature, and the corresponding range is determined based on the correction value of the fuel injection quantity. When the intake pressure is less than or equal to the intake pressure threshold, the fuel injection quantity is adjusted to a corresponding range based on the ambient pressure and the ambient temperature. The corresponding range is determined based on the correction value of the fuel injection quantity. This includes: when the intake pressure is less than or equal to the intake pressure threshold, determining whether the ambient pressure falls within a first altitude range; if it falls within the first altitude range, adjusting the fuel injection quantity based on the correction value of the fuel injection quantity within the first altitude range; if it falls outside the first altitude range but falls within the first temperature range, adjusting the fuel injection quantity based on the correction value of the fuel injection quantity within the first temperature range; if it falls outside the first altitude range but falls within the second temperature range, adjusting the fuel injection quantity based on the correction value of the fuel injection quantity within the second temperature range. The intake pressure target value is the average intake pressure of the engine under the design power target state. The design power target refers to the engine's rated power or power output under optimal operating conditions. The intake pressure threshold is an intake pressure alarm monitoring value used to prevent engine malfunctions.

2. The method according to claim 1, characterized in that, Obtaining the correction value for the fuel injection quantity includes: Within the first temperature range, the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values ​​are obtained, and the correction value of the fuel injection quantity within the first temperature range is determined based on the first intake pressure value and the target intake pressure value. Within the second temperature range, the second intake pressure value of the engine at different speeds and torques is obtained, and the correction value of the fuel injection quantity within the second temperature range is determined based on the second intake pressure value and the target intake pressure value, wherein the minimum value within the first temperature range is greater than the maximum value within the second temperature range. Within the first altitude range, the third intake pressure value of the engine at different speeds and torques is obtained, and the correction value of the fuel injection quantity within the first altitude range is determined based on the third intake pressure value and the target intake pressure value.

3. The method according to claim 2, characterized in that, Within the first temperature range, the standard power output of the engine at different speeds and torques and the corresponding first intake pressure values ​​are obtained, and a correction value for the fuel injection quantity within the first temperature range is determined based on the first intake pressure value and the target intake pressure value, including: Within the first temperature range, the standard power output and the corresponding first intake pressure value of the engine at different speeds and torques are obtained through the bench calibration test; The average intake pressure when the engine reaches its design power target is defined as the intake pressure target value; The deviations between each of the first intake pressure values ​​and the target intake pressure value are calculated to obtain multiple deviation values; A correction value for the amount of fuel injection within the first temperature range is determined based on multiple deviation values.

4. The method according to claim 1, characterized in that, If the altitude is within the first altitude range, the fuel injection quantity is adjusted based on the correction value for the fuel injection quantity within the first altitude range, including: If the engine is within the first altitude range, obtain the current speed and current torque of the engine; Based on the current speed and the current torque, a corresponding correction value is matched among the correction values ​​of the fuel injection quantity within the first altitude range to obtain the target correction value; The fuel injection quantity is adjusted according to the target correction value.

5. The method according to claim 1, characterized in that, When the intake pressure is greater than the intake pressure threshold, reducing the fuel injection quantity of the injector to a preset range that matches the engine's design power includes: When the intake pressure is greater than the intake pressure threshold, the difference between the current fuel injection quantity of the injector and the fuel injection quantity that matches the engine design power is calculated to obtain a first difference. Based on the first difference, the fuel injection quantity is reduced to the preset range.

6. The method according to claim 3, characterized in that, Determining a correction value for the fuel injection quantity within the first temperature range based on multiple deviation values ​​includes: A preset fuel injection quantity adjustment coefficient is obtained, which is determined based on the engine characteristics and test data; Based on the preset fuel injection quantity adjustment coefficient and the deviation value, the correction value of the fuel injection quantity within the first temperature range is calculated.

7. A fuel injection quantity control device for controlling the fuel injection quantity of a fuel injector, characterized in that, The control device includes: The acquisition unit is used to acquire vehicle operating information and the correction value of the fuel injection quantity of the injector. The vehicle operating information includes ambient temperature, ambient pressure and intake pressure. The correction value of the fuel injection quantity includes the correction value of the fuel injection quantity in a first temperature range, the correction value of the fuel injection quantity in a second temperature range, and the correction value of the fuel injection quantity in a first altitude range. Each of the correction values ​​of the fuel injection quantity is determined based on bench calibration tests. The first processing unit is configured to determine whether the intake pressure is greater than the intake pressure threshold when the intake pressure is greater than the intake pressure target value, and reduce the fuel injection quantity of the injector to a preset range that matches the engine design power when the intake pressure is greater than the intake pressure threshold. The second processing unit is used to adjust the fuel injection quantity to a corresponding range based on the ambient pressure and the ambient temperature when the intake pressure is less than or equal to the intake pressure threshold, wherein the corresponding range is determined based on the correction value of the fuel injection quantity. The second processing unit includes a first adjustment module, a second adjustment module, and a third adjustment module. The first adjustment module is used to determine whether the engine is within the first altitude range based on the ambient pressure when the intake pressure is less than or equal to the intake pressure threshold. If the engine is within the first altitude range, the first adjustment module adjusts the fuel injection quantity based on the correction value of the fuel injection quantity within the first altitude range. The second adjustment module is used to adjust the fuel injection quantity based on the correction value of the fuel injection quantity within the first temperature range if the engine is not within the first altitude range but is within the first temperature range. The third adjustment module is used to adjust the fuel injection quantity based on the correction value of the fuel injection quantity within the second temperature range if the engine is not within the first altitude range but is within the second temperature range. The intake pressure target value is the average intake pressure of the engine under the design power target state. The design power target refers to the engine's rated power or power output under optimal operating conditions. The intake pressure threshold is an intake pressure alarm monitoring value used to prevent engine malfunctions.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the fuel injection quantity control method according to any one of claims 1 to 6.

9. An electronic device, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a method for controlling the amount of fuel injection as described in any one of claims 1 to 6.

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