Combustion parameter determination method, engine control method and system and vehicle

Abstract

The embodiment of the invention provides a combustion parameter determination method, an engine control method and system and a vehicle, and belongs to the field of automatic control. The determination method comprises the steps that operation parameters of a non-road vehicle are acquired, and the operation parameters of the non-road vehicle comprise operation gears of the non-road vehicle; and determining combustion parameters of an engine of the non-road vehicle according to the running gear of the non-road vehicle. According to the method for determining the combustion parameters of the engine of the non-road vehicle provided by the embodiment of the invention, various combustion parameters can be automatically adjusted according to the operation requirements of the vehicle in different scenes.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to a method and system for determining combustion parameters of an engine, an engine control method, an engine control system, an engine, and a vehicle. Background Art

[0002] With the development of social economy, the country attaches more and more importance to environmental protection. At the same time, with the increase in international oil prices, it is becoming increasingly important for non-road products to balance fuel consumption and power while meeting strict emission regulations.

[0003] Non-road engines currently in use on the market use either internal or external emission control for different emission levels. For engine combustion control, both internal and external emission control methods adopt a balanced combustion control mode, that is, a combustion control mode that achieves a balance between the engine's economy, emissions, and power. This single control mode is usually only optimized for specific operating conditions or conditions, and cannot achieve optimal performance under other operating conditions. A single control mode is set according to specific conditions and parameters. When these conditions change, the engine cannot adapt quickly, resulting in reduced performance or increased emissions. This makes it difficult to achieve comprehensive optimization of the engine when facing different usage scenarios and needs. Although this single control mode is simple and stable, with the increasing diversity of non-road applications and operating modes, this control mode can no longer meet the operating requirements of vehicles in different application scenarios. Therefore, there is an urgent need for a method that can automatically adjust multiple combustion modes to meet the operating requirements of vehicles in different scenarios. Summary of the Invention

[0004] The purpose of an embodiment of the present invention is to provide a system for determining engine combustion parameters, a determination system, an engine control method, an engine control system, an engine, and a vehicle. The control method comprises: obtaining operating parameters of an off-road vehicle, wherein the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle; and determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle. The present invention solves the problem that the use of a single control mode results in the inability to automatically adjust multiple combustion parameters according to different application scenarios, thereby failing to meet the operating requirements of the vehicle.

[0005] Optionally, determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the required load of the engine of the off-road vehicle based on the operating gear of the off-road vehicle; determining the combustion mode of the engine of the off-road vehicle based on the required load of the engine of the off-road vehicle; and determining the combustion parameters of the engine of the off-road vehicle corresponding to the combustion mode of the engine of the off-road vehicle based on the combustion mode of the engine of the off-road vehicle.

[0006] Optionally, the operating gear of the off-road vehicle and the required load of the engine of the off-road vehicle have a first preset relationship, and the first preset relationship is a positive correlation; determining the required load of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the required load of the engine of the off-road vehicle based on the first preset relationship and the operating gear of the off-road vehicle.

[0007] Optionally, the operating parameters of the off-road vehicle also include the operating load of the engine of the off-road vehicle, and determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle.

[0008] Optionally, determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle includes: performing a weighted summation of the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle to determine a required load of the engine of the off-road vehicle corresponding to the first average value; and determining the combustion parameters of the engine of the off-road vehicle based on the required load of the engine of the off-road vehicle.

[0009] Optionally, the operating parameters of the off-road vehicle also include an expected load of the off-road vehicle, and determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle.

[0010] Optionally, determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle includes: taking a weighted sum of the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle to determine the required load of the engine of the off-road vehicle; and determining the combustion parameters of the engine of the off-road vehicle based on the required load of the engine of the off-road vehicle.

[0011] Optionally, the determination method further includes: using environmental parameters to correct the combustion parameters of the engine of the off-road vehicle to obtain corrected combustion parameters of the engine of the off-road vehicle, wherein the environmental parameters include altitude, ambient temperature and engine water temperature.

[0012] Optionally, the environmental parameter and the combustion parameter form a second preset relationship, and the second preset relationship is a positive correlation; using the environmental parameter to correct the combustion parameter of the engine of the off-road vehicle and determining the corrected combustion parameter includes: using the environmental parameter and the second preset relationship to correct the combustion parameter of the engine of the off-road vehicle and determining the corrected combustion parameter.

[0013] On the other hand, an embodiment of the present invention further provides an engine control method, which includes: a method for determining the combustion parameters of the engine, obtaining the combustion parameters of the engine; and controlling the operation of the engine according to the combustion parameters of the engine.

[0014] On the other hand, an embodiment of the present invention further provides a system for determining the combustion parameters of an engine, the determination system comprising: an acquisition module for acquiring the operating parameters of an off-road vehicle, wherein the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle; and a determination module for determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle.

[0015] On the other hand, an embodiment of the present invention further provides an engine control system, which includes: a system for determining the combustion parameters of the engine, for obtaining the combustion parameters of the engine; and a control device, for controlling the operation of the engine according to the combustion parameters of the engine.

[0016] On the other hand, an embodiment of the present invention further provides an engine, comprising the engine control system.

[0017] On the other hand, an embodiment of the present invention further provides a vehicle, comprising the engine.

[0018] According to the above technical solution, the method for determining combustion parameters of an off-road vehicle engine includes: obtaining operating parameters of the off-road vehicle, wherein the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle; and determining the combustion parameters of the off-road vehicle engine based on the operating gear of the off-road vehicle. This embodiment of the present invention determines the combustion parameters of the off-road vehicle engine based on the operating parameters of the off-road vehicle, such as the operating gear of the vehicle. This embodiment of the present invention can automatically adjust various combustion parameters based on the operating requirements of the vehicle in different scenarios.

[0019] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present invention, but do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0021] Figure 1 is a flow chart of a method for determining combustion parameters provided by a first embodiment of the present invention;

[0022] Figure 2 This is a flowchart of determining combustion parameters according to the first embodiment of the present invention;

[0023] Figure 3 is a flow chart of a method for determining combustion parameters provided by a second embodiment of the present invention;

[0024] Figure 4 is a flow chart of a method for determining combustion parameters provided by a third embodiment of the present invention;

[0025] Figure 5 is a flow chart for determining a combustion model provided by a third embodiment of the present invention;

[0026] Figure 6 It is a schematic diagram of the strategy for determining combustion parameters;

[0027] Figure 7 This is a schematic diagram of a combustion parameter determination system provided by the sixth embodiment of the present invention.

[0028] Description of Reference Numerals

[0029] 1 Get module 2 Determine module DETAILED DESCRIPTION

[0030] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0031] Example 1

[0032] like Figure 1 This is a flow chart of a method for determining combustion parameters of an engine provided by the first embodiment of the present invention. The method for determining combustion parameters of an engine includes the following steps S11-S12.

[0033] S11. Obtain operating parameters of the off-road vehicle.

[0034] The operating parameters of the off-road vehicle are obtained by existing methods, which will not be described in detail here.

[0035] Wherein, the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle.

[0036] S12: Determine combustion parameters of the engine of the off-road vehicle according to the operating gear of the off-road vehicle. For details, refer to the following steps S121-S123.

[0037] Further, refer to Figure 2 The flowchart of determining the combustion parameters of the engine provided by the first embodiment of the present invention includes steps S121-S123.

[0038] S121. Determine a required load of an engine of the off-road vehicle according to an operating gear of the off-road vehicle.

[0039] S122: Determine a combustion mode of the engine of the off-road vehicle according to a required load of the engine of the off-road vehicle.

[0040] S123. Determine, based on the combustion mode of the engine of the off-road vehicle, combustion parameters of the engine of the off-road vehicle corresponding to the combustion mode of the engine of the off-road vehicle.

[0041] Specifically, non-road vehicles (also known as off-highway vehicles) refer to vehicles that exceed the restrictions of highway traffic regulations and are generally not allowed to be driven on highways. They are usually only able to be driven on dedicated roads or roadless areas within mines, construction sites, airports and factories, such as excavators and forklifts.

[0042] Furthermore, the operating gear of the off-road vehicle and the required load of the engine of the off-road vehicle have a first preset relationship, and the first preset relationship is a positive correlation; determining the required load of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the required load of the engine of the off-road vehicle based on the first preset relationship and the operating gear of the off-road vehicle.

[0043] To address the diverse operating modes of off-road vehicles and meet their diverse application scenarios, embodiments of the present invention determine the required engine load of an off-road vehicle by acquiring operating parameters of the off-road vehicle, such as the vehicle's operating gear. The off-road vehicle's operating gear (i.e., the vehicle's real-time gear position) determines the required engine load of the off-road vehicle. The off-road vehicle's operating gear position and the required engine load of the off-road vehicle are positively correlated. The required engine load of the off-road vehicle is determined by combining this positive correlation with the vehicle's operating gear position. For example, the required engine load T is calculated by multiplying the vehicle's operating gear position by a positive proportionality coefficient. Alternatively, the required engine load T of an off-road vehicle can be calculated using existing technical methods, such as combustion models. The method of embodiments of the present invention comprehensively considers the decisive influence of the operating gear position on the required engine load of an off-road vehicle. Therefore, embodiments of the present invention preferably use the first predetermined relationship and the vehicle's operating gear position to determine the required engine load of the off-road vehicle.

[0044] There is a first positive correlation between the operating gear of the off-road vehicle and the required load T of the off-road vehicle's engine. Specifically, a higher gear corresponds to a greater required load T of the off-road vehicle's engine. Therefore, as the gear increases during operation, the required load T of the off-road vehicle's engine also increases, which in turn changes the vehicle's combustion mode, causing the combustion parameters of the off-road vehicle's engine to shift with the gear change.

[0045] When the required load T of the off-road vehicle's engine is greater than or equal to the current maximum load T of the off-road vehicle's engine max When the combustion mode of the engine of the off-road vehicle is determined to be the power mode; when the required load T of the engine of the off-road vehicle is greater than the minimum load T min and is less than the maximum load T max When the combustion mode of the engine of the off-road vehicle is determined to be the balanced mode; when the required load T of the engine of the off-road vehicle is less than or equal to the minimum load T min When the combustion mode of the engine of the non-road vehicle is determined to be the economic mode.

[0046] It should be noted that when the model of the non-road engine is determined, the corresponding maximum load T max and minimum load T min All values ​​are known. Non-road vehicles have three combustion modes: power mode, balanced mode, and economy mode. Once any mode is determined, the corresponding combustion parameters can be determined.

[0047] The embodiment of the present invention utilizes the operating gear of the off-road vehicle to calculate the vehicle's required load for starting through an adaptive combustion mode, adjusts the combustion mode of the off-road vehicle's engine in real time, and realizes flexible switching of multiple combustion modes, thereby achieving optimal control of fuel consumption and power, greatly improving the competitiveness of the product.

[0048] According to the above technical solution, the method for determining combustion parameters of an off-road vehicle engine includes: obtaining operating parameters of the off-road vehicle, wherein the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle; and determining the combustion parameters of the off-road vehicle engine based on the operating gear of the off-road vehicle. This embodiment of the present invention determines the combustion parameters of the off-road vehicle engine based on the operating parameters of the off-road vehicle, such as the operating gear of the vehicle. This embodiment of the present invention can automatically adjust various combustion parameters based on the operating requirements of the vehicle in different scenarios.

[0049] Example 2

[0050] In order to improve the accuracy of determining the combustion parameters of the engine, the second embodiment of the present invention further introduces the operating parameters of the off-road vehicle, such as the operating load of the engine of the off-road vehicle, based on the first embodiment.

[0051] The operating parameters of the off-road vehicle also include the operating load of the engine of the off-road vehicle. Determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle.

[0052] Further, if Figure 3 This is a flow chart of a method for determining the combustion parameters of the engine provided by a second embodiment of the present invention. Determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle includes steps S211-S212.

[0053] S211: Perform a weighted summation of the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle to determine a required load of the engine of the off-road vehicle corresponding to the first average value.

[0054] S212: Determine combustion parameters of the engine of the off-road vehicle according to the required load of the engine of the off-road vehicle.

[0055] Specifically, a weighted sum is performed on the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle to determine the required load T of the engine of the off-road vehicle. After obtaining the required load T of the engine of the corresponding off-road vehicle, the required load T of the engine of the off-road vehicle is also added to the maximum load T of the engine of the off-road vehicle. max and minimum load T min The comparison is performed to determine combustion parameters of an engine of an off-road vehicle.

[0056] When the required load T of the off-road vehicle's engine is greater than or equal to the current maximum load T of the off-road vehicle's engine max When the combustion mode of the engine of the off-road vehicle is determined to be the power mode; when the required load T of the engine of the off-road vehicle is greater than the minimum load T min and is less than the maximum load T max When the combustion mode of the engine of the off-road vehicle is determined to be the balanced mode; when the required load T of the engine of the off-road vehicle is less than or equal to the minimum load T min When the combustion mode of the engine of the non-road vehicle is determined to be the economic mode.

[0057] The second embodiment of the present invention comprehensively considers the operating gear of the vehicle in combination with the operating load of the engine of the off-road vehicle, thereby further improving the accuracy of determining the combustion parameters of the engine of the off-road vehicle.

[0058] Example 3

[0059] In order to further improve the accuracy of determining the combustion parameters of the engine of the off-road vehicle, the third embodiment of the present invention further introduces the operating parameters of the off-road vehicle, such as the expected load of the off-road vehicle, based on the second embodiment.

[0060] The operating parameters of the off-road vehicle also include an expected load of the off-road vehicle. Determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle.

[0061] Further, if Figure 4 This is a flow chart of a method for determining combustion parameters of an off-road vehicle engine according to a third embodiment of the present invention. Determining the combustion parameters of the off-road vehicle engine based on the off-road vehicle's operating gear, the off-road vehicle's engine operating load, and the off-road vehicle's expected load includes steps S311-S312:

[0062] S311 . Perform a weighted summation of the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle to determine a required load of the engine of the off-road vehicle.

[0063] S312: Determine combustion parameters of the engine of the off-road vehicle according to the required load of the engine of the off-road vehicle.

[0064] Specifically, the expected load of an off-road vehicle refers to the load expected to be achieved under the engine's current operating conditions. Obtaining the off-road vehicle's operating gear, the off-road vehicle's engine operating load, and the expected load of the off-road vehicle is accomplished using existing technical means. The off-road vehicle's operating gear, the off-road vehicle's engine operating load, and the expected load of the off-road vehicle are all positively correlated with the required load of the off-road vehicle's engine. Furthermore, as the vehicle's operating gear increases, both the corresponding off-road vehicle's engine operating load and the expected load increase; conversely, both the off-road vehicle's engine operating load and the expected load decrease.

[0065] In the embodiment of the present invention, a weighted sum is performed on the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle to obtain the required load T of the engine of the off-road vehicle. After obtaining the required load T of the engine of the corresponding off-road vehicle, the required load T of the engine of the off-road vehicle is also added to the maximum load T of the engine of the off-road vehicle. max and minimum load T min The comparison is performed to determine combustion parameters of an engine of an off-road vehicle.

[0066] When the required load T of the off-road vehicle's engine is greater than or equal to the current maximum load T of the off-road vehicle's engine max When the combustion mode of the engine of the off-road vehicle is determined to be the power mode; when the required load T of the engine of the off-road vehicle is greater than the minimum load T min and is less than the maximum load T max When the combustion mode of the engine of the off-road vehicle is determined to be the balanced mode; when the required load T of the engine of the off-road vehicle is less than or equal to the minimum load T min When the combustion mode of the engine of the non-road vehicle is determined to be the economic mode.

[0067] The present invention calculates the vehicle's operating load by collecting the vehicle's operating gear, engine operating load, and vehicle's expected load from the vehicle's driving computer, and determines the engine operating mode based on specific judgment logic and calibration parameters. The embodiment of the present invention automatically determines the vehicle's operating state through the adaptive combustion control module. If the vehicle is operating under a heavy load and in a high gear (i.e., T is greater than or equal to the maximum load Tmax ), the adaptive combustion control module requests the engine to remain in power mode, maintaining the engine's maximum power output and power response, which can well meet the vehicle's power needs. If the vehicle is working in a low-load state (i.e., corresponding to T less than or equal to the minimum load T min ), the adaptive combustion control module requests the engine to remain in the economic mode, which can obtain the best economy of the engine. If the vehicle is working in a medium load state (corresponding to T greater than the load T min ), the adaptive combustion control module requests the engine to maintain the balance mode, which can achieve a balance between engine power and economy. Figure 5 , Figure 5 This is a flowchart for determining the combustion model of an engine provided by the third embodiment of the present invention.

[0068] The present invention uses input signals from the off-road vehicle, including the vehicle's operating gear, the engine's operating load, and the power demand (i.e., the vehicle's expected load). These signals are fed into the engine's onboard computer, which then calculates and outputs a corresponding combustion mode, including power mode, economy mode, or balanced mode. Based on the corresponding combustion mode, the corresponding combustion parameters are directly determined. This invention addresses the single control mode of traditional engines and meets the diverse power requirements of users.

[0069] The third embodiment of the present invention comprehensively considers the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle, thereby further improving the accuracy of determining the combustion parameters of the engine of the off-road vehicle.

[0070] Example 4

[0071] A fourth embodiment of the present invention, based on the above three embodiments, further utilizes environmental parameters to correct combustion parameters. The method for determining combustion parameters of an off-road vehicle engine further includes: correcting the combustion parameters of the off-road vehicle engine using the environmental parameters to obtain corrected combustion parameters of the off-road vehicle engine, wherein the environmental parameters include altitude, ambient temperature, and engine water temperature.

[0072] Furthermore, the environmental parameter and the combustion parameter form a second preset relationship, and the second preset relationship is a positive correlation; using the environmental parameter to correct the combustion parameter of the engine of the off-road vehicle and determining the corrected combustion parameter includes: using the environmental parameter and the second preset relationship to correct the combustion parameter of the engine of the off-road vehicle and determining the corrected combustion parameter.

[0073] Specifically, the embodiment of the present invention takes into account the influence of environmental parameters on combustion parameters and corrects the combustion parameters so that the non-road vehicle can operate in the optimal state under the corresponding combustion mode. The environmental parameters include altitude, ambient temperature and the water temperature of the engine water tank. For example, when in an area with a high altitude, the altitude has a certain influence on the combustion parameters, and the corresponding combustion parameters should increase when the altitude increases. The combustion parameters include the main injection advance angle, the pre-injection amount and the pre-injection advance angle. The corresponding increase in the main injection advance angle, the pre-injection amount and the pre-injection advance angle obtains the corrected combustion parameters, and the vehicle operates with the corrected combustion parameters. The ambient temperature and the water temperature of the engine water tank are positively correlated with the combustion parameters, and the method for correcting the combustion parameters at the same altitude is the same, so it will not be repeated here. For specific reference Figure 6 This is a schematic diagram of the strategy for determining combustion parameters, which is particularly applicable to non-road National IV diesel engines. Figure 6 The hydraulic signal in is the desired load of the engine, and the engine load is the operating load of the engine of the non-road vehicle.

[0074] In the fourth embodiment of the present invention, the on-board computer collects the load signal of the engine in the gear position of the entire vehicle and the required load of the vehicle, and judges the specific power demand of the vehicle through the specific algorithm and logic of the adaptive combustion module, and outputs the power demand control signal to the engine combustion control module. The combustion control module selects a suitable combustion mode according to the input control signal, outputs corresponding combustion parameters and corrects the combustion parameters through environmental parameters such as altitude, water temperature and other parameters. The engine operation module executes the corrected combustion parameter command to meet the power demand of the vehicle.

[0075] The fourth embodiment of the present invention uses different environmental conditions such as altitude, ambient temperature, and water temperature of the engine water tank as correction conditions for the combustion model, so that the combustion model has better robustness and a wider range of adaptability.

[0076] Example 5

[0077] The fifth embodiment of the present invention also provides an engine control method, which includes: obtaining the combustion parameters of the engine according to the method for determining the combustion parameters of the engine; and controlling the operation of the engine according to the combustion parameters of the engine.

[0078] The engine control method of the fifth embodiment of the present invention includes the method for determining the engine combustion parameters of the above-mentioned embodiment. Its implementation method and effects are the same as those of the above-mentioned embodiment and are not further described here. Controlling the operation of the engine based on the engine combustion parameters is a conventional technique.

[0079] Example 6

[0080] The sixth embodiment of the present invention also provides a system for determining the combustion parameters of an engine, the determination system comprising: an acquisition module for acquiring the operating parameters of an off-road vehicle, wherein the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle; and a determination module for determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle.

[0081] Figure 7 is a schematic structural diagram of a system for determining engine combustion parameters according to a sixth embodiment of the present invention. The sixth embodiment of the present invention further includes a system for determining engine combustion parameters, comprising: an acquisition module 1 for acquiring operating parameters of an off-road vehicle, wherein the operating parameters of the off-road vehicle include the operating gear of the off-road vehicle; and a determination module 2 for determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle.

[0082] The implementation method and effects of the engine combustion parameter determination system in the sixth embodiment of the present invention are the same as those of the first embodiment described above, and will not be described in detail herein.

[0083] Example 7

[0084] The seventh embodiment of the present invention also provides an engine control system, which includes: an engine combustion parameter determination system for obtaining the engine combustion parameters; and a control device for controlling the operation of the engine according to the engine combustion parameters.

[0085] The engine in the seventh embodiment of the present invention includes the engine combustion parameter determination system in the sixth embodiment, and its implementation method and effect are the same as those of the sixth embodiment, which will not be described in detail here.

[0086] Example 8

[0087] An eighth embodiment of the present invention further provides an engine, comprising the engine control system.

[0088] In the eighth embodiment of the present invention, the vehicle includes the control system of the engine in the seventh embodiment, and its implementation method and effects are the same as those of the seventh embodiment, which will not be described in detail here.

[0089] Embodiment 9

[0090] A ninth embodiment of the present invention further provides a vehicle, comprising the engine.

[0091] The present invention relates to a vehicle that can be widely used in the off-road engine industry. It can automatically adapt and adjust the engine's performance parameters through calculations by an on-board computer based on the vehicle's operating mode as input. Under the premise of ensuring that engine performance and emissions meet regulatory requirements, it automatically adjusts the combustion parameter model to match the engine performance output with vehicle requirements, thereby ensuring that the vehicle operates in an optimal state and improving the vehicle's power performance and economic performance.

[0092] The method and effect performed by the vehicle of the ninth embodiment of the present invention are the same as those of the eighth embodiment described above, and will not be described in detail here.

[0093] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0094] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A method for determining combustion parameters of an engine, characterized in that: The determination method includes: Obtaining operating parameters of the off-road vehicle, wherein the operating parameters of the off-road vehicle include an operating gear of the off-road vehicle; and A combustion parameter of an engine of the off-road vehicle is determined according to an operating gear of the off-road vehicle.

2. The determination method according to claim 1, characterized in that Determining the combustion parameters of the engine of the off-road vehicle according to the operating gear of the off-road vehicle includes: determining a required load of an engine of the off-road vehicle based on an operating gear of the off-road vehicle; determining a combustion mode of the engine of the off-road vehicle based on a required load of the engine of the off-road vehicle; and According to the combustion mode of the engine of the off-road vehicle, a combustion parameter of the engine of the off-road vehicle corresponding to the combustion mode of the engine of the off-road vehicle is determined.

3. The determination method according to claim 2, characterized in that: The operating gear of the off-road vehicle and the required load of the engine of the off-road vehicle have a first preset relationship, and the first preset relationship is a positive correlation; Determining the required load of the engine of the off-road vehicle according to the operating gear of the off-road vehicle includes determining the required load of the engine of the off-road vehicle according to the first preset relationship and the operating gear of the off-road vehicle.

4. The determination method according to claim 1, characterized in that The operating parameters of the off-road vehicle also include the operating load of the engine of the off-road vehicle, Determining the combustion parameters of the engine of the off-road vehicle according to the operating gear of the off-road vehicle includes: determining the combustion parameters of the engine of the off-road vehicle according to the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle.

5. The control method according to claim 4, characterized in that: Determining the combustion parameters of the engine of the off-road vehicle according to the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle includes: performing a weighted summation of the operating gear of the off-road vehicle and the operating load of the engine of the off-road vehicle to determine a required load of the engine of the off-road vehicle; A combustion parameter of the engine of the off-road vehicle is determined based on a required load of the engine of the off-road vehicle.

6. The determination method according to claim 4, characterized in that: The operating parameters of the off-road vehicle also include the expected load of the off-road vehicle, Determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle includes: determining the combustion parameters of the engine of the off-road vehicle based on the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle.

7. The determination method according to claim 6, characterized in that: Determining the combustion parameters of the engine of the off-road vehicle according to the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle includes: Performing a weighted summation of the operating gear of the off-road vehicle, the operating load of the engine of the off-road vehicle, and the expected load of the off-road vehicle to determine the required load of the engine of the off-road vehicle; A combustion parameter of the engine of the off-road vehicle is determined based on a required load of the engine of the off-road vehicle.

8. The determination method according to claim 1, characterized in that: The determination method further includes: The combustion parameters of the engine of the off-road vehicle are corrected using environmental parameters to obtain corrected combustion parameters of the engine of the off-road vehicle, wherein the environmental parameters include altitude, ambient temperature, and engine water temperature.

9. The determination method according to claim 8, characterized in that: The environmental parameter and the combustion parameter form a second preset relationship, and the second preset relationship is a positive correlation; The modifying the combustion parameters of the engine of the off-road vehicle using the environmental parameters and determining the modified combustion parameters includes modifying the combustion parameters of the engine of the off-road vehicle using the environmental parameters and a second preset relationship and determining the modified combustion parameters.

10. A method for controlling an engine, characterized in that: The engine control method include: The method for determining the combustion parameters of an engine according to any one of claims 1 to 9, obtaining the combustion parameters of the engine; and The operation of the engine is controlled according to the combustion parameters of the engine.

11. A system for determining combustion parameters of an engine, characterized in that: The determination system comprises: an acquisition module, configured to acquire operating parameters of the off-road vehicle, wherein the operating parameters of the off-road vehicle include an operating gear of the off-road vehicle; and The determination module is configured to determine a combustion parameter of an engine of the off-road vehicle according to an operating gear of the off-road vehicle.

12. An engine control system, characterized in that: The control system includes: The system for determining combustion parameters of an engine according to claim 14, configured to obtain the combustion parameters of the engine; and A control device is used to control the operation of the engine according to the combustion parameters of the engine.

13. An engine, characterized in that: The engine includes the engine control system according to claim 12.

14. A vehicle, characterized in that: The vehicle includes the engine according to claim 13.

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