Method, device and equipment for determining greenhouse effect intensity of plateau engine

Abstract

The present application discloses a method, device and equipment for determining the greenhouse effect intensity of a plateau engine, and relates to the field of automobile technology. The disclosed method for determining the greenhouse effect intensity of a plateau engine includes: determining the initial emission factor of greenhouse gases of the engine under the current operating parameters; determining the target correction factor according to the current operating parameters and the current plateau environmental parameters; correcting the initial emission factor by the target correction factor to obtain the target emission factor; and determining the greenhouse effect intensity of the engine under the plateau environment according to the target emission factor. The present application determines the target correction factor by the current operating parameters and the current plateau environmental parameters, and corrects the determined initial emission factor by the target correction factor, thereby reducing the influence of the plateau environment on the emission factor, and being able to obtain an accurate correction factor, thereby enabling accurate greenhouse effect intensity to be obtained in plateau areas, and effectively improving the measurement accuracy of the greenhouse effect intensity.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a method, device and equipment for determining the intensity of greenhouse effect of a plateau engine. Background Art

[0002] At present, the greenhouse gas emissions from automobiles mainly include carbon dioxide, methane and nitrous oxide. Carbon dioxide and methane are direct products of fuel combustion, and nitrous oxide is the product of the chemical reaction of nitrogen oxides in the post-treatment system. In order to constrain and limit the emission of greenhouse gas pollutants and strengthen the management of greenhouse gas emissions, the existing technology is that technicians measure the greenhouse gas concentration produced by automobile engine combustion in a plain test environment to obtain the greenhouse gas emission factor, and then manually analyze the emission factor, evaluate the greenhouse gas through the emission factor and global warming potential, and thus measure the intensity of the greenhouse effect.

[0003] However, in plateau areas, due to the fragile ecological environment, different environmental parameters (such as altitude or ambient temperature) will affect the concentration of greenhouse gases. Therefore, the emission factors obtained by existing technologies in plateau environments are easily affected by the plateau environment, making the emission factors inaccurate, resulting in errors in the measured greenhouse effect intensity and low measurement accuracy. Summary of the invention

[0004] The main purpose of this application is to provide a method, device and equipment for determining the greenhouse effect intensity of plateau engines, aiming to solve the technical problem that the emission factors obtained in the prior art in plateau environments are easily affected by the plateau environment, making the emission factors inaccurate, resulting in errors in the measured greenhouse effect intensity and low measurement accuracy.

[0005] To achieve the above-mentioned purpose, the present application provides a method for determining the greenhouse effect intensity of a plateau engine, the method comprising:

[0006] Determine the initial greenhouse gas emission factor of the engine under the current operating parameters, wherein the initial emission factor includes: an initial carbon dioxide emission factor, an initial methane emission factor, and an initial nitrous oxide emission factor;

[0007] Determine a target correction coefficient according to the current operating condition parameters and the current plateau environment parameters;

[0008] Correcting the initial emission factor by the target correction factor to obtain a target emission factor, wherein the target emission factor includes: a corrected carbon dioxide emission factor, a corrected initial methane emission factor, and a corrected nitrous oxide emission factor;

[0009] The greenhouse effect intensity of the engine in a plateau environment is determined according to the target emission factor by using a preset greenhouse effect intensity formula, and the preset greenhouse effect intensity formula is:

[0010]

[0011] In the formula, is the intensity of the greenhouse effect, is the corrected carbon dioxide emission factor, is the corrected methane emission factor, is the corrected nitrous oxide emission factor.

[0012] Optionally, the current environmental parameters include: current altitude and current ambient temperature;

[0013] The step of determining the target correction coefficient according to the current operating condition parameters and the current plateau environment parameters includes:

[0014] Determine whether the current operating condition parameter change rate is greater than the critical operating condition parameter change rate;

[0015] If yes, determining the target concentration correction coefficient of the greenhouse gas according to the current operating condition parameter change rate;

[0016] determining a target altitude correction factor according to the current altitude;

[0017] Determining a target temperature correction coefficient according to the current ambient temperature;

[0018] The target concentration correction coefficient, the target altitude correction coefficient, and the target temperature correction coefficient are used as target correction coefficients.

[0019] Optionally, before the step of determining whether the current operating condition parameter change rate is greater than the critical operating condition parameter change rate, the step further includes:

[0020] Obtaining the concentration measurement value of the greenhouse gas under different operating parameter change rates;

[0021] Obtaining a preset emission concentration mapping table, wherein the preset emission concentration mapping table includes correlation relationships between different operating condition parameters and corresponding greenhouse gas emission concentrations;

[0022] Determine the emission concentration record value corresponding to each of the concentration measurement values ​​in the preset emission factor mapping table;

[0023] Calculating the difference between each of the concentration measurement values ​​and the corresponding emission concentration record value to obtain the concentration value deviation corresponding to each of the concentration measurement values;

[0024] When there is a target concentration measurement value whose concentration value deviation is greater than the preset deviation, the operating condition parameter change rate corresponding to the target concentration measurement value is used as the critical operating condition parameter change rate.

[0025] Optionally, if so, the step of determining the target concentration correction coefficient of the greenhouse gas according to the current operating condition parameter change rate includes:

[0026] If yes, then obtain a concentration correction numerical relationship, wherein the concentration correction numerical relationship is determined by numerically fitting the change rates of different transition operating condition parameters and the corresponding concentration change rates, and is used to characterize the mapping relationship between the change rates of each transition operating condition parameter and the corresponding concentration change rate;

[0027] Wherein, the transition operating condition parameter change rate is an operating condition parameter change rate having a value greater than the critical operating condition parameter change rate;

[0028] Determining a first target concentration change rate corresponding to the current operating condition parameter change rate through the concentration correction numerical relationship;

[0029] The first target concentration change rate is used as the target concentration correction coefficient of the greenhouse gas.

[0030] Optionally, the step of determining a target altitude correction coefficient according to the current altitude includes:

[0031] Acquire an altitude correction numerical relationship, wherein the altitude correction numerical relationship is determined by numerically fitting different altitudes and corresponding concentration change rates, and is used to characterize a mapping relationship between each altitude and the corresponding concentration change rate;

[0032] Determine the second target concentration change rate corresponding to the current altitude through the altitude correction numerical relationship;

[0033] The second target concentration change rate is used as a target altitude correction coefficient.

[0034] Optionally, the step of determining a target temperature correction coefficient according to the current ambient temperature includes:

[0035] Acquire a temperature correction model, wherein the temperature correction model is determined by numerically fitting different ambient temperatures and corresponding concentration change rates, and is used to characterize a mapping relationship between each of the ambient temperatures and the corresponding concentration change rates;

[0036] Determine the third target concentration change rate corresponding to the current altitude temperature by using the temperature correction model;

[0037] The third target concentration change rate is used as a target temperature correction coefficient.

[0038] Optionally, the step of correcting the initial emission factor by using the target correction coefficient to obtain a target emission factor includes:

[0039] Correcting the initial emission factor based on the target concentration correction factor, the target altitude correction factor, and the target temperature correction factor using a preset emission factor correction formula to obtain a target emission factor;

[0040] The preset emission factor correction formula is:

[0041]

[0042] In the formula, E X（i,j） is the current emission concentration of greenhouse gas X, is the intake air mass flow rate, is the fuel mass flow rate, is the ratio of greenhouse gas density to exhaust density, is the speed in the current operating parameters, is the torque in the current working condition parameters, is the target concentration correction factor, is the target altitude correction factor, is the target temperature correction coefficient, is the target emission factor.

[0043] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a device for determining the greenhouse effect intensity of a plateau engine, the device for determining the greenhouse effect intensity of a plateau engine comprising:

[0044] An emission factor determination module, used to determine the initial emission factor of greenhouse gases of the engine under current operating parameters, wherein the initial emission factor includes: an initial carbon dioxide emission factor, an initial methane emission factor, and an initial nitrous oxide emission factor;

[0045] A correction coefficient determination module, used to determine a target correction coefficient according to the current operating condition parameters and the current plateau environment parameters;

[0046] An emission factor correction module, used to correct the initial emission factor by the target correction coefficient to obtain a target emission factor, wherein the target emission factor includes: a corrected carbon dioxide emission factor, a corrected initial methane emission factor, and a corrected nitrous oxide emission factor;

[0047] The greenhouse effect intensity determination module is used to determine the greenhouse effect intensity of the engine in a plateau environment according to the target emission factor by using a preset greenhouse effect intensity formula, wherein the preset greenhouse effect intensity formula is:

[0048]

[0049] In the formula, is the intensity of the greenhouse effect, is the corrected carbon dioxide emission factor, is the corrected methane emission factor, is the corrected nitrous oxide emission factor.

[0050] In addition, to achieve the above-mentioned purpose, the present application also proposes a device for determining the intensity of the greenhouse effect of a plateau engine, the device comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the method for determining the intensity of the greenhouse effect of a plateau engine as described above.

[0051] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the method for determining the intensity of the greenhouse effect of a plateau engine as described above are implemented.

[0052] One or more technical solutions proposed in this application have at least the following technical effects:

[0053] The present application determines the initial emission factor of greenhouse gases of the engine under the current operating parameters, and the initial emission factor includes: initial carbon dioxide emission factor, initial methane emission factor and initial nitrous oxide emission factor; determines the target correction factor according to the current operating parameters and the current plateau environmental parameters; corrects the initial emission factor by the target correction factor to obtain the target emission factor, and the target emission factor includes: corrected carbon dioxide emission factor, corrected initial methane emission factor and corrected nitrous oxide emission factor; determines the greenhouse effect intensity of the engine under the plateau environment according to the target emission factor by presetting the greenhouse effect intensity formula. Compared with the emission factors of the prior art measured in the plain test environment, which are not applicable to the plateau environment, the present application determines the target correction factor by the current operating parameters and the current plateau environmental parameters, and corrects the determined initial emission factor by the target correction factor, thereby reducing the influence of the plateau environment on the emission factor, being applicable to the plateau environment, and being able to obtain accurate correction factors in the plateau environment, thereby enabling accurate greenhouse effect intensity to be obtained in the plateau environment, and effectively improving the measurement accuracy of the greenhouse effect intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0055] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0056] Figure 1 This is a flow chart of the first embodiment of the method for determining the greenhouse effect intensity of a plateau engine of the present application;

[0057] Figure 2 This is a flow chart of the second embodiment of the method for determining the greenhouse effect intensity of a plateau engine of the present application;

[0058] Figure 3 This is a flow chart of the third embodiment of the method for determining the greenhouse effect intensity of a plateau engine of the present application;

[0059] Figure 4 This is a schematic diagram of the module structure of a device for determining the greenhouse effect intensity of a plateau engine according to an embodiment of the present application;

[0060] Figure 5 This is a schematic diagram of the structure of a device for determining the intensity of greenhouse effect of a plateau engine according to an embodiment of the present application.

[0061] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0062] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0063] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0064] The main solution of the embodiment of the present application is: the device for determining the greenhouse effect intensity of the plateau engine determines the target correction coefficient based on the current operating parameters and the current plateau environmental parameters, corrects the determined initial emission factor by the target correction coefficient to obtain the target emission factor, and then determines the greenhouse effect intensity of the engine in the plateau environment based on the target emission factor.

[0065] In this embodiment, for the convenience of description, the following description is made with the plateau engine greenhouse effect intensity determination device as the execution subject.

[0066] The present application provides a solution, which determines the target correction coefficient by the current operating condition parameters and the current plateau environmental parameters, and corrects the determined initial emission factor by the target correction coefficient, thereby reducing the impact of the plateau environment on the emission factor, and can be applied to the plateau environment. An accurate correction factor can also be obtained in the plateau environment, thereby enabling an accurate greenhouse effect intensity to be obtained in the plateau environment, effectively improving the measurement accuracy of the greenhouse effect intensity. In addition, the present application corrects the initial emission factor, and can automatically determine the greenhouse effect intensity based on the target emission factor, without relying on manual analysis, and can avoid the subjective situation of personal judgment, further improving the measurement accuracy of the greenhouse effect intensity.

[0067] It should be noted that the execution subject of this embodiment can be a computing service device with plateau engine greenhouse effect intensity determination, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a plateau engine greenhouse effect intensity determination device, etc. The following takes a plateau engine greenhouse effect intensity determination device (hereinafter referred to as a greenhouse effect intensity determination device) as an example to illustrate this embodiment and the following embodiments.

[0068] Based on this, the embodiment of the present application provides a method for determining the intensity of the greenhouse effect, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the method for determining the intensity of greenhouse effect of a plateau engine of the present application.

[0069] In this embodiment, the greenhouse effect intensity determination device includes steps S10 to S40:

[0070] Step S10, determining the initial greenhouse gas emission factor of the engine under the current operating parameters, wherein the initial emission factor includes: an initial carbon dioxide emission factor, an initial methane emission factor and an initial nitrous oxide emission factor.

[0071] It should be noted that the above-mentioned current operating condition parameters may be parameters of the engine under the operating condition at the current moment, including the current speed and the current torque.

[0072] It is to be understood that the greenhouse gases mentioned above may include direct products of engine combustion, such as carbon dioxide and methane, and may also include products of chemical reactions of nitrogen oxides in a post-treatment system, such as nitrous oxide.

[0073] In a specific implementation, the above-mentioned greenhouse effect intensity determination device can collect greenhouse gases generated by the combustion of the engine under the current operating parameters, and measure the current emission concentration of the greenhouse gases, and then call the preset emission factor formula, substitute the current emission concentration into the preset emission factor formula for calculation, and obtain the initial emission factor of the greenhouse gases.

[0074] The above preset emission factor formula is:

[0075]

[0076] In the formula, E X（i,j） is the current emission concentration of greenhouse gas X (i.e. the initial emission factor of greenhouse gas X), is the intake air mass flow rate, is the fuel mass flow rate, is the ratio of greenhouse gas density to exhaust density, is the speed in the current operating parameters, is the torque in the current working condition parameters, is the initial emission factor.

[0077] It should be understood that the greenhouse gas X may be carbon dioxide, methane or nitrous oxide. Carbon dioxide, methane and nitrous oxide may be substituted into the above preset emission factor formulas to obtain the initial carbon dioxide emission factor, the initial methane emission factor and the initial nitrous oxide emission factor.

[0078] Step S20, determining a target correction coefficient according to the current operating condition parameters and the current plateau environment parameters.

[0079] It should be noted that the above-mentioned current plateau environmental parameters may be parameters related to the environment of the plateau area, such as altitude and ambient temperature.

[0080] It is understandable that the above-mentioned target correction coefficient can be a coefficient for adjusting the initial emission factor so that the adjusted emission factor can accurately reflect the emission amount under the current plateau environment.

[0081] It should be noted that due to the complexity of the actual roads in the plateau environment, the actual operating conditions of the engine are complex and changeable, and there will be transition conditions, which can be the state of the engine's operating parameters in the process of change. Under this transition condition, the speed change rate is greater than the speed change rate threshold, or the torque change rate is greater than the torque change rate threshold, such as the condition corresponding to rapid acceleration. Under this transition condition, the emission concentration of greenhouse gases will change compared to the steady-state condition. Therefore, when determining the target correction coefficient, the current operating condition parameters and the current plateau environment parameters can be combined to improve the accuracy of the correction.

[0082] In addition, the above-mentioned steady-state operating condition is a state in which the operating parameters of the engine remain unchanged for a sufficiently long time. In this steady-state operating condition, the speed change rate is less than the speed change rate threshold, and the torque change rate is less than the torque change rate threshold.

[0083] In a specific implementation, the greenhouse gas concentration change rate under different operating parameters can be obtained in advance through testing, including the carbon dioxide concentration change rate, the methane concentration change rate and the nitrous oxide concentration change rate, and then each operating condition and the corresponding greenhouse gas concentration change rate are numerically fitted to obtain a first numerical relationship representing the corresponding relationship between the operating parameter change rate and the greenhouse gas concentration change rate, and the first numerical relationship includes: the numerical relationship corresponding to the operating parameter change rate and the carbon dioxide concentration change rate, the numerical relationship corresponding to the operating parameter change rate and the methane concentration change rate, and the numerical relationship corresponding to the operating parameter change rate and the nitrous oxide concentration change rate. At the same time, the greenhouse gas concentration change rate under different environmental parameters can also be obtained through testing, and then each environmental parameter and the corresponding greenhouse gas concentration change rate are numerically fitted to obtain a second numerical relationship representing the corresponding relationship between the environmental parameter and the greenhouse gas concentration change rate, and the second numerical relationship includes: the numerical relationship corresponding to the environmental parameter and the carbon dioxide concentration change rate, the numerical relationship corresponding to the environmental parameter and the methane concentration change rate, and the numerical relationship corresponding to the environmental parameter and the nitrous oxide concentration change rate. The above-mentioned greenhouse effect intensity determination device can determine the first correction coefficient corresponding to the current operating condition parameter through a first numerical relationship, and determine the second correction coefficient corresponding to the current environmental parameter through a second numerical relationship. The above-mentioned target correction coefficient can be composed of the first correction coefficient and the second correction coefficient.

[0084] Step S30, correcting the initial emission factor by the target correction coefficient to obtain a target emission factor, wherein the target emission factor includes: a corrected carbon dioxide emission factor, a corrected initial methane emission factor, and a corrected nitrous oxide emission factor.

[0085] In a specific implementation, the greenhouse effect intensity determination device can multiply the target correction coefficient, that is, the first correction coefficient, the second correction coefficient, and the initial emission factor to obtain the target emission factor, and then the target emission factor that accurately reflects the transition working conditions and plateau environment can be obtained. For example, the first correction coefficient corresponding to carbon dioxide and the second correction coefficient corresponding to carbon dioxide are multiplied with the initial carbon dioxide emission factor to obtain the corrected carbon dioxide emission factor; the first correction coefficient corresponding to methane and the second correction coefficient corresponding to methane are multiplied with the initial methane emission factor to obtain the corrected methane carbon emission factor; the first correction coefficient corresponding to nitrous oxide and the second correction coefficient corresponding to nitrous oxide are multiplied with the initial nitrous oxide emission factor to obtain the corrected nitrous oxide carbon emission factor.

[0086] It should be understood that the above initial emission factor can be determined based on steady-state conditions and plain environments. When the current steady-state condition is in progress, the first correction factor obtained through the first numerical relationship can be 1 or the first correction factor can be directly configured as 1; when the current plain area is in progress, such as an altitude of 0 km, the second correction factor obtained through the second numerical relationship can be 1 or the second correction factor can be directly configured as 1, so that the target correction factor can be applied to both steady-state conditions and plain environments, thereby further improving the correction accuracy.

[0087] Step S40, determining the greenhouse effect intensity of the engine in a plateau environment according to the target emission factor by using a preset greenhouse effect intensity formula.

[0088] It should be noted that the Global Warming Potential (GWP) can be defined as the intensity of the greenhouse effect to evaluate the impact of greenhouse gases on the radiation balance in the atmosphere in the same period of time. The above-mentioned greenhouse effect intensity determination device can determine the corrected carbon dioxide emission factor, methane emission factor and nitrous oxide emission factor in sequence based on the above method. Then the greenhouse effect intensity is determined based on the GWP ratio relationship between carbon dioxide, methane and nitrous oxide. The greenhouse effect intensity of greenhouse gases can be calculated using a preset greenhouse effect intensity formula, which is:

[0089]

[0090] In the formula, is the intensity of the greenhouse effect, is the corrected carbon dioxide emission factor, is the corrected methane emission factor, is the corrected nitrous oxide emission factor.

[0091] It should be understood that for different operating conditions of the vehicle, the carbon dioxide emission factor, methane emission factor and nitrous oxide emission factor reflecting different operating conditions and different environments can be automatically obtained through the above method, and then the greenhouse effect intensity can be automatically calculated, thereby realizing the standardized calculation of greenhouse gas emission factors and greenhouse effect intensity. There is no need to rely on manual analysis, which can avoid the subjectivity of personal judgment and further improve the measurement accuracy of greenhouse effect intensity.

[0092] The present embodiment provides a method for determining the intensity of greenhouse effect, by determining the initial emission factor of greenhouse gas of the engine under the current operating parameters, the initial emission factor includes: initial carbon dioxide emission factor, initial methane emission factor and initial nitrous oxide emission factor; determining the target correction factor according to the current operating parameters and the current plateau environment parameters; correcting the initial emission factor by the target correction factor to obtain the target emission factor, the target emission factor includes: corrected carbon dioxide emission factor, corrected initial methane emission factor and corrected nitrous oxide emission factor; determining the intensity of greenhouse effect of the engine under plateau environment according to the target emission factor by a preset greenhouse effect intensity formula. Compared with the emission factor of the prior art measured in a plain test environment, which is not applicable to plateau environment, the present embodiment determines the target correction factor by the current operating parameters and the current plateau environment parameters, and corrects the determined initial emission factor by the target correction factor, thereby reducing the influence of the plateau environment on the emission factor, being applicable to the plateau environment, and being able to obtain an accurate correction factor under the plateau environment, thereby enabling accurate greenhouse effect intensity to be obtained under the plateau environment, and effectively improving the measurement accuracy of the greenhouse effect intensity.

[0093] Based on the first embodiment of the present application, the second embodiment of the present application is proposed. In the second embodiment of the present application, the same or similar contents as those of the first embodiment can be referred to the above introduction and will not be described in detail later. Figure 2 , Figure 2 This is a flow chart of the second embodiment of the method for determining the intensity of greenhouse effect of a plateau engine of the present application.

[0094] In this embodiment, the current environmental parameters include the current altitude and the current ambient temperature, and step S20 includes steps S201 to S205:

[0095] Step S201, determining whether the current operating condition parameter change rate is greater than the critical operating condition parameter change rate.

[0096] It should be noted that the above critical operating condition parameter change rate may be a preset operating condition parameter change rate threshold, and when the current operating condition parameter change rate is greater than the critical operating condition parameter change rate, it is determined that the current operating condition parameter change rate is large. The critical operating condition parameter change rate may include a critical speed change rate and a critical torque change rate.

[0097] In a specific implementation, the above-mentioned current operating condition parameter change rate may include the current speed change rate and the current torque change rate. The above-mentioned greenhouse effect intensity determination device may compare the current speed change rate with the critical speed change rate, and compare the current torque change rate with the critical torque change rate to determine whether the current speed change rate is greater than the critical speed change rate or whether the current torque change rate is greater than the critical torque change rate.

[0098] Step S202: If yes, determine the target concentration correction coefficient of the greenhouse gas according to the current operating condition parameter change rate.

[0099] It should be noted that after determining the critical speed change rate, the critical speed change rate can be used as the reference speed change rate, and the reference speed change rate can be gradually increased by fixed increments to obtain multiple transition speed change rates. Then, the concentration change rate of greenhouse gases actually measured at each transition speed change rate is determined, and each concentration change rate is used as a correction coefficient to be associated with each transition speed change rate to obtain a speed correlation relationship.

[0100] It is understandable that after determining the critical torque change rate, the critical torque change rate can be used as the baseline torque change rate, and the baseline torque change rate can be gradually increased in fixed increments to obtain multiple transition torque change rates. Then, the concentration change rate of greenhouse gases actually measured at each transition torque change rate is determined, and each concentration change rate is used as a correction coefficient to be associated with each transition speed change rate to obtain a torque correlation relationship.

[0101] In a specific implementation, the greenhouse effect intensity determination device determines that the current operating condition is a transition operating condition when it determines that the current speed change rate is greater than the critical speed change rate, or the current torque change rate is greater than the critical torque change rate. At this time, in order to enable the corrected target emission factor to accurately reflect the transition operating condition, the corresponding target concentration correction coefficient can be selected according to the speed correlation relationship or torque correlation relationship.

[0102] Specifically, when the current speed change rate is greater than the critical speed change rate, the concentration correction coefficient corresponding to the current speed change rate can be determined from the speed association relationship as the first concentration correction coefficient, and the first concentration correction coefficient is the target concentration correction coefficient. When the current torque change rate is greater than the critical torque change rate, the concentration correction coefficient corresponding to the current torque change rate can be determined from the torque association relationship as the second concentration correction coefficient, and the second concentration correction coefficient is the target concentration correction coefficient.

[0103] When the current speed change rate is greater than the critical speed change rate, and the current torque change rate is greater than the critical torque change rate, the maximum value of the first concentration correction coefficient and the second concentration correction coefficient is used as the target concentration correction coefficient. When the current speed change rate is less than the critical speed change rate, and the current torque change rate is less than the critical torque change rate, the target concentration correction coefficient can be configured to be 1.

[0104] Step S203, determining a target altitude correction coefficient according to the current altitude.

[0105] In a specific implementation, different altitudes, such as 0~5000, can be simulated to construct a test environment of 25°C. The concentration change rate of greenhouse gases at different altitudes is obtained through testing, and then each altitude and the corresponding concentration change rate are input into the greenhouse effect intensity determination device. The greenhouse effect intensity determination device numerically fits each altitude and the corresponding concentration change rate to obtain an altitude correction numerical relationship that characterizes the corresponding relationship between the altitude and the greenhouse gas concentration change rate. Furthermore, the above-mentioned greenhouse effect intensity determination device can determine the target altitude correction coefficient corresponding to the current altitude through the altitude correction numerical relationship.

[0106] In a feasible implementation, step S203 may include steps S2031-S2032:

[0107] Step S2031, obtaining an altitude correction numerical relationship, wherein the altitude correction numerical relationship is determined by numerically fitting different altitudes and corresponding concentration change rates, and is used to characterize a mapping relationship between each altitude and the corresponding concentration change rate.

[0108] In a specific implementation, the above-mentioned greenhouse effect intensity determination device can obtain a pre-constructed initial altitude correction function relationship, and then substitute each altitude and the corresponding concentration change rate into the initial altitude correction function relationship for fitting, so as to obtain an altitude correction numerical relationship that characterizes the mapping relationship between each altitude and the corresponding concentration change rate.

[0109] For example, assuming that the initial altitude correction function relationship is:

[0110]

[0111] In the formula, , , are all polynomial coefficients, and h is the altitude.

[0112] Substitute each altitude and the corresponding concentration change rate into the initial altitude correction function relationship, fit it using the least squares method, and calculate the polynomial coefficients in the initial altitude correction function relationship. , , , the polynomial coefficients obtained are , , Substituting the initial altitude correction function relationship into the altitude correction value relationship can determine the altitude correction value relationship.

[0113] Step S2032: determining a second target concentration change rate corresponding to the current altitude through the altitude correction numerical relationship.

[0114] Step S2033: using the second target concentration change rate as a target altitude correction coefficient.

[0115] In a specific implementation, the greenhouse effect intensity determination device may substitute the current altitude into the altitude correction numerical relationship to obtain a second target concentration change rate corresponding to the current altitude, and the second target concentration change rate may be the target altitude correction coefficient.

[0116] Step S204: determining a target temperature correction coefficient according to the current ambient temperature.

[0117] In a specific implementation, a test environment for greenhouse gas testing at different ambient temperatures can be carried out. For example, the ambient temperature can be selected from -10°C to 40°C, and a reference temperature, such as 25°C, can be set for testing. The concentration change rate of greenhouse gases at different ambient temperatures is obtained through testing, and then each ambient temperature and the corresponding concentration change rate are input into a greenhouse effect intensity determination device. The greenhouse effect intensity determination device processes each ambient temperature and the corresponding concentration change rate to obtain a temperature correction model that characterizes the corresponding relationship between the ambient temperature and the greenhouse gas concentration change rate. Furthermore, the above-mentioned greenhouse effect intensity determination device can determine the target altitude correction coefficient corresponding to the current ambient temperature through the temperature correction model.

[0118] In a feasible implementation, step S204 may include steps S2041 to S2043:

[0119] Step S2041, obtaining a temperature correction model, wherein the temperature correction model is determined by numerically fitting different ambient temperatures and corresponding concentration change rates, and is used to characterize the mapping relationship between each of the ambient temperatures and the corresponding concentration change rates.

[0120] In a specific implementation, the above-mentioned greenhouse effect intensity determination device can obtain an initial neural network model, form a sample set according to each ambient temperature and the corresponding concentration change rate, divide the sample set into a training group, a verification group and a test group, train the initial neural network model through the training group, and then verify the performance of the trained neural network model through the verification group, correct the trained neural network model according to the verification result, and finally test the verified neural network model with the ambient temperature in the test group as input. If the deviation between the actual concentration change rate output by the verified neural network model and the concentration change rate in the test group is lower than a preset value (such as 1%), it is determined that the neural network model training is successful, and the successfully trained neural network model is used as a temperature correction model.

[0121] Step S2042: determining a third target concentration change rate corresponding to the current altitude temperature through the temperature correction model.

[0122] Step S2043: using the third target concentration change rate as a target temperature correction coefficient.

[0123] In a specific implementation, the greenhouse effect intensity determination device may input the current altitude temperature into a temperature correction model, and receive a third target concentration change rate output by the temperature correction model, where the third target concentration change rate may be a target temperature correction coefficient.

[0124] Step S205 , using the target concentration correction coefficient, the target altitude correction coefficient, and the target temperature correction coefficient as target correction coefficients.

[0125] In a specific implementation, the target correction coefficient may be composed of a target concentration correction coefficient, a target altitude correction coefficient and a target temperature coefficient.

[0126] In a feasible implementation, step S30 may include:

[0127] Correcting the initial emission factor based on the target concentration correction factor, the target altitude correction factor, and the target temperature correction factor using a preset emission factor correction formula to obtain a target emission factor;

[0128] The preset emission factor correction formula is:

[0129]

[0130] In the formula, E X（i,j） is the current emission concentration of greenhouse gas X, is the intake air mass flow rate, is the fuel mass flow rate, is the ratio of greenhouse gas density to exhaust density, is the speed in the current operating parameters, is the torque in the current working condition parameters, is the target concentration correction factor, is the target altitude correction factor, is the target temperature correction coefficient, is the target emission factor.

[0131] It should be understood that the greenhouse gas X may be carbon dioxide, methane or nitrous oxide. For any type of greenhouse gas, the preset emission factor formula may be substituted to obtain the initial emission factor of the corresponding type of greenhouse gas.

[0132] In a specific implementation, the greenhouse effect intensity determination device may substitute the target concentration correction factor, the target altitude correction factor and the target temperature coefficient into the preset emission factor correction formula, thereby correcting the initial emission factor and obtaining the target emission factor.

[0133] It should be understood that when the current operating condition is in a steady-state condition, that is, when the current speed change rate is less than the critical speed change rate, and the current torque change rate is less than the critical torque change rate, the target concentration correction coefficient may not be used, or the target concentration correction coefficient may be configured to be 1.

[0134] In this embodiment, when the current operating condition is a transition operating condition, the target concentration correction coefficient is determined according to the current operating condition parameter change rate, and then the target altitude correction coefficient is determined according to the current altitude, and the target temperature correction coefficient is determined according to the current ambient temperature. The target concentration correction coefficient, the target altitude correction coefficient and the target temperature correction coefficient are used as target correction coefficients. When the initial emission factor is corrected with the target correction coefficient, the target emission factor reflecting the transition operating condition, altitude and ambient temperature can be obtained, thereby improving the calculation accuracy of the greenhouse effect intensity.

[0135] Based on the second embodiment of the present application, the third embodiment of the present application is proposed. In the third embodiment of the present application, the same or similar contents as those of the first and second embodiments can be referred to the above description and will not be described in detail later. Figure 3 , Figure 3 This is a flow chart of the third embodiment of the method for determining the intensity of greenhouse effect of a plateau engine of the present application.

[0136] In this embodiment, before step S201, steps S21 to S25 may also be included:

[0137] Step S21, obtaining the concentration measurement value of the greenhouse gas under different operating parameter change rates.

[0138] In a specific implementation, the engine speed can be gradually changed at fixed intervals (such as 10 rpm) by fixing the torque, and the greenhouse gas emission concentration at the moment of speed change can be measured to obtain the first type of concentration measurement value of each greenhouse gas under the condition of speed change.

[0139] Accordingly, the engine torque can be gradually changed at fixed intervals (such as 10 N.m) at a fixed speed, and the greenhouse gas emission concentration at the moment of torque change can be measured to obtain the second type of concentration measurement value of each greenhouse gas under the condition of torque change. The first type of concentration measurement value and the second type of concentration measurement value can constitute the greenhouse gas concentration measurement value.

[0140] Step S22, obtaining a preset emission concentration mapping table, wherein the preset emission concentration mapping table includes associations between different operating parameters and corresponding greenhouse gas emission concentrations.

[0141] In a specific implementation, based on a pre-built test environment, such as 0m altitude, 22°C, and oil temperature greater than 70°C, the emission concentration of the engine under different test conditions can be collected, and then the emission concentration can be associated with the corresponding operating condition parameters to establish a preset emission concentration mapping table. The greenhouse gas emission concentration of the engine under different operating conditions can be inverted through the mapping table.

[0142] For example, a feasible preset emission concentration mapping table is shown in Table 1 below:

[0143] Table 1: Mapping table of engine operating conditions and preset greenhouse gas emission concentrations

[0144]

[0145] Among them, S i is the engine speed, S0 is the idle speed, S max is the rated speed, T j is the engine torque, T0 is 0 torque, T max is the maximum torque, the speed is in intervals of 10 rpm, and the torque is in intervals of 10 N.m. For the working conditions not covered in Table 1, they can be obtained by interpolation.

[0146] It should be noted that S i and T j The operating conditions that constitute the engine, E (i，j) For the engine in S i , T j Greenhouse gas emission concentration under working conditions, E (0，0) is the greenhouse gas emission concentration of the engine under S0, T0 conditions, E (0，j) For the engine at S0, T j Greenhouse gas emission concentration under working conditions, E (0，h) For the engine at S0, T max Greenhouse gas emission concentration under working conditions, E (i，0) For the engine in S i , greenhouse gas emission concentration under T0 condition, E (i，h) For the engine in S i , T max Greenhouse gas emission concentration under working conditions, E (h，0) For the engine in S max , greenhouse gas emission concentration under T0 condition, E (h，j) For the engine in S max , T j Greenhouse gas emission concentration under working conditions, E (h，h) For the engine in S max , T max Greenhouse gas emission concentrations under operating conditions.

[0147] It is understandable that the greenhouse gas mentioned above may be carbon dioxide, methane or nitrous oxide, and a preset emission concentration mapping table as shown in Table 1 may be constructed for any greenhouse gas.

[0148] Step S23, determining the emission concentration record value corresponding to each of the concentration measurement values ​​in the preset emission factor mapping table.

[0149] In a specific implementation, the above-mentioned greenhouse effect intensity determination device can query the first-class emission concentration record values ​​under the working conditions corresponding to each first-class concentration measurement value in the preset concentration mapping table, and query the second-class emission concentration record values ​​under the working conditions corresponding to each second-class concentration measurement value in the preset concentration mapping table. The above-mentioned emission concentration record values ​​may include the first-class emission concentration record values ​​and the second-class emission concentration record values.

[0150] Step S24, calculating the difference between each of the concentration measurement values ​​and the corresponding emission concentration record value, and obtaining the concentration value deviation corresponding to each of the concentration measurement values.

[0151] In a specific implementation, the greenhouse effect intensity determination device can calculate the difference between the first type of emission concentration measurement value and the first type of emission concentration record value to obtain the first type of concentration value deviation corresponding to each first type of emission concentration measurement value, and calculate the difference between the second type of emission concentration measurement value and the second type of emission concentration record value to obtain the second type of concentration value deviation corresponding to each second type of emission concentration measurement value. The above concentration value deviation can include the first type of concentration value deviation and the second type of concentration value deviation.

[0152] Step S25, when there is a target concentration measurement value whose concentration value deviation is greater than the preset deviation, the operating condition parameter change rate corresponding to the target concentration measurement value is used as the critical operating condition parameter change rate.

[0153] It should be noted that the preset deviation may include a first preset deviation and a second preset deviation. The first preset deviation is a threshold for determining whether the speed change rate is a critical speed change rate, and the second preset deviation is a threshold for determining whether the torque change rate is a critical torque change rate.

[0154] In a specific implementation, the above-mentioned greenhouse effect intensity determination device can compare each first-class concentration value deviation with the first preset deviation in order from the minimum value to the maximum value according to the numerical value of the rotational speed. When it is detected that the first-class concentration value deviation corresponding to the first rotational speed is greater than the first preset deviation, it is determined that the rotational speed change rate corresponding to the rotational speed is the critical rotational speed change rate.

[0155] Accordingly, each second-type concentration value deviation can be compared with the second preset deviation in sequence from the minimum value to the maximum value according to the numerical value of the torque. When it is detected that the second-type concentration value deviation corresponding to the first torque is greater than the second preset deviation, the torque change rate corresponding to the torque is determined to be the critical torque change rate.

[0156] This embodiment determines the emission concentration record value corresponding to each concentration measurement value in the preset emission factor mapping table; calculates the difference between each concentration measurement value and the corresponding emission concentration record value to obtain the concentration value deviation corresponding to each concentration measurement value; when there is a target concentration measurement value whose concentration value deviation is greater than the preset deviation, the operating condition parameter change rate corresponding to the target concentration measurement value is used as the critical operating condition parameter change rate. Since this embodiment determines the critical operating condition parameter change rate by the difference between the actual concentration measurement value and the emission concentration record value in the preset emission concentration table, the critical operating condition parameter change rate can be determined more accurately, thereby making the determination of the target correction coefficient more precise, and indirectly improving the calculation accuracy of determining the intensity of the greenhouse effect.

[0157] In a feasible implementation, step S202 may include steps S2021 to S2023:

[0158] Step S2021, if yes, obtain the concentration correction numerical relationship, which is determined by numerically fitting the change rates of different transition operating condition parameters and the corresponding concentration change rates, and is used to characterize the mapping relationship between the change rates of each transition operating condition parameter and the corresponding concentration change rate.

[0159] Among them, the transition operating condition parameter change rate is an operating condition parameter change rate whose value is greater than the critical operating condition parameter change rate.

[0160] It should be noted that after determining the critical speed change rate, the critical speed change rate can be used as the reference speed change rate, and the reference speed change rate can be gradually increased by a fixed increment to obtain multiple transition speed change rates. Then, the concentration change rate of the greenhouse gas actually measured at each transition speed change rate is determined, and each concentration change rate and each transition speed change rate are fitted based on the initial concentration-speed function relationship to obtain the first concentration correction numerical relationship.

[0161] For example, if the initial concentration speed function relationship is:

[0162]

[0163] In the formula, , , , , are polynomial coefficients, is the speed change rate.

[0164] Correspondingly, each speed change rate and the corresponding concentration change rate are substituted into the initial concentration-speed function relationship, and the least squares method is used for fitting to calculate the polynomial coefficients in the initial concentration-speed function relationship. The obtained polynomial coefficients are substituted into the initial speed correction function relationship to obtain the first concentration correction numerical relationship.

[0165] It is understandable that after determining the critical torque change rate, the critical torque change rate can be used as the baseline torque change rate, and the baseline torque change rate can be gradually increased by fixed increments to obtain multiple transition torque change rates. Then, the concentration change rate of the greenhouse gas actually measured at each transition torque change rate is determined, and each concentration change rate and each transition torque change rate are fitted based on the initial concentration-torque function relationship to obtain a second concentration-corrected numerical relationship.

[0166] For example, assuming that the initial concentration torque function is:

[0167]

[0168] In the formula, , , , , are polynomial coefficients, is the torque change rate.

[0169] Accordingly, each torque change rate and the corresponding concentration change rate are substituted into the initial concentration-torque function relationship, and the polynomial coefficients in the initial concentration-torque function relationship are calculated by fitting through the least squares method. The obtained polynomial coefficients are substituted into the initial torque correction function relationship to obtain the second concentration correction numerical relationship.

[0170] The above-mentioned concentration correction numerical relationship includes a first concentration correction numerical relationship and a second concentration correction numerical relationship.

[0171] In a specific implementation, when the greenhouse effect intensity determination device determines that the current speed change rate is greater than the critical speed change rate, or the current torque change rate is greater than the critical torque change rate, it determines that the current operating condition is a transition condition. At this time, the first concentration value correction relationship and the second concentration value correction relationship are obtained.

[0172] Step S2022: determining a first target concentration change rate corresponding to the current operating condition parameter change rate through the concentration correction numerical relationship.

[0173] Step S2023: Using the first target concentration change rate as the target concentration correction coefficient of the greenhouse gas.

[0174] In a specific implementation, the above-mentioned greenhouse effect intensity determination device can obtain the first target concentration change rate corresponding to the current speed change rate from the first concentration numerical correction relationship when the current speed change rate is greater than the critical speed change rate. When the current torque change rate is greater than the critical torque change rate, the first target concentration change rate corresponding to the current speed change rate can be obtained from the second concentration numerical correction relationship. When the current speed change rate is greater than the critical speed change rate, and the current torque change rate is greater than the critical torque change rate, the first candidate concentration change rate corresponding to the current speed change rate can be obtained from the first concentration numerical correction relationship, and the second candidate concentration change rate corresponding to the current torque change rate can be obtained from the second concentration numerical correction relationship, and then the maximum value from the first candidate concentration change rate and the second candidate concentration change rate can be selected as the first target concentration change rate. After determining the first target concentration change rate, the first target concentration change rate can be used as the target concentration correction coefficient.

[0175] In addition, when the current speed change rate is greater than the critical speed change rate, and the current torque change rate is greater than the critical torque change rate, it can be determined that the current state is a steady-state condition, and there is no need to correct the transition condition. Therefore, the target concentration correction coefficient can be configured to 1.

[0176] In this embodiment, when the current operating condition is a transition condition, the first target concentration change rate corresponding to the current operating condition parameter change rate can be determined according to the concentration correction numerical relationship, and the determined first target concentration change rate is used as the target concentration correction coefficient, thereby accurately determining the target concentration correction coefficient applicable to the transition condition and improving the calculation accuracy of determining the intensity of the greenhouse effect.

[0177] This application also provides a device for determining the greenhouse effect intensity of a plateau engine. Please refer to Figure 4 , Figure 4 This is a schematic diagram of the module structure of a device for determining the greenhouse effect intensity of a plateau engine according to an embodiment of the present application. The device for determining the greenhouse effect intensity of a plateau engine comprises:

[0178] The emission factor determination module 10 is used to determine the initial emission factor of greenhouse gases of the engine under current operating parameters, wherein the initial emission factor includes: an initial carbon dioxide emission factor, an initial methane emission factor and an initial nitrous oxide emission factor.

[0179] The correction coefficient determination module 20 is used to determine the target correction coefficient according to the current operating condition parameters and the current plateau environment parameters.

[0180] The emission factor correction module 30 is used to correct the initial emission factor by the target correction coefficient to obtain a target emission factor, wherein the target emission factor includes: a corrected carbon dioxide emission factor, a corrected initial methane emission factor and a corrected nitrous oxide emission factor.

[0181] The greenhouse effect intensity determination module 40 is used to determine the greenhouse effect intensity of the engine in a plateau environment according to the target emission factor by using a preset greenhouse effect intensity formula, wherein the preset greenhouse effect intensity formula is:

[0182]

[0183] In the formula, is the intensity of the greenhouse effect, is the corrected carbon dioxide emission factor, is the corrected methane emission factor, is the corrected nitrous oxide emission factor.

[0184] The device for determining the intensity of the greenhouse effect of a plateau engine provided by the present application adopts the method for determining the intensity of the greenhouse effect of a plateau engine in the above-mentioned embodiment, which can solve the technical problem that the emission factors obtained in the prior art in a plateau environment are easily affected by the plateau environment, making the emission factors inaccurate, resulting in errors in the measured greenhouse effect intensity and low measurement accuracy. Compared with the prior art, the beneficial effects of the device for determining the intensity of the greenhouse effect of a plateau engine provided by the present application are the same as the beneficial effects of the method for determining the intensity of the greenhouse effect of a plateau engine provided by the above-mentioned embodiment, and the other technical features of the device for determining the intensity of the greenhouse effect of a plateau engine are the same as the features disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0185] The present application provides a device for determining the intensity of the greenhouse effect of a plateau engine, the device comprising: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method for determining the intensity of the greenhouse effect of a plateau engine in the above-mentioned embodiment one.

[0186] Reference below Figure 5 , Figure 5 The schematic diagram of the structure of the plateau engine greenhouse effect intensity determination device in the embodiment of the present application. The plateau engine greenhouse effect intensity determination device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 5The device for determining the intensity of greenhouse effect of a plateau engine shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0187] like Figure 5 As shown, the plateau engine greenhouse effect intensity determination device may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. Various programs and data required for the operation of the plateau engine greenhouse effect intensity determination device are also stored in RAM1004. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the plateau engine greenhouse effect intensity determination device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a plateau engine greenhouse effect intensity determination device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0188] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0189] The plateau engine greenhouse effect intensity determination device provided by the present application adopts the plateau engine greenhouse effect intensity determination method in the above-mentioned embodiment, which can solve the technical problem that the emission factors obtained in the prior art in the plateau environment are easily affected by the plateau environment, making the emission factors inaccurate, resulting in errors in the measured greenhouse effect intensity and low measurement accuracy. Compared with the prior art, the beneficial effects of the plateau engine greenhouse effect intensity determination device provided by the present application are the same as the beneficial effects of the plateau engine greenhouse effect intensity determination method provided by the above-mentioned embodiment, and the other technical features in the plateau engine greenhouse effect intensity determination device are the same as the features disclosed in the previous embodiment method, which will not be repeated here.

[0190] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0191] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0192] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the method for determining the intensity of the greenhouse effect of a plateau engine in the above-mentioned embodiment.

[0193] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0194] The above-mentioned computer-readable storage medium may be included in the device for determining the intensity of greenhouse effect of a plateau engine; or it may exist independently without being assembled into the device for determining the intensity of greenhouse effect of a plateau engine.

[0195] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the plateau engine greenhouse effect intensity determination device, the plateau engine greenhouse effect intensity determination device enables the following to: determine the initial emission factor of greenhouse gases of the engine under the current operating parameters; determine the target correction coefficient according to the current operating parameters and the current plateau environmental parameters; correct the initial emission factor by the target correction coefficient to obtain the target emission factor; and determine the greenhouse effect intensity of the engine under the plateau environment according to the target emission factor.

[0196] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0197] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0198] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0199] The readable storage medium provided in the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned method for determining the greenhouse effect intensity of plateau engines, and can solve the technical problem that the emission factors obtained in the prior art in plateau environments are easily affected by the plateau environment, making the emission factors inaccurate, resulting in errors in the measured greenhouse effect intensity and low measurement accuracy. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the method for determining the greenhouse effect intensity of plateau engines provided in the above-mentioned embodiments, and will not be repeated here.

[0200] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for determining the greenhouse effect intensity of a plateau engine, characterized in that: The method comprises: Determine the initial greenhouse gas emission factor of the engine under the current operating parameters, wherein the initial emission factor includes: an initial carbon dioxide emission factor, an initial methane emission factor, and an initial nitrous oxide emission factor; Determine a target correction coefficient according to the current operating condition parameters and the current plateau environment parameters; Correcting the initial emission factor by the target correction factor to obtain a target emission factor, wherein the target emission factor includes: a corrected carbon dioxide emission factor, a corrected initial methane emission factor, and a corrected nitrous oxide emission factor; The greenhouse effect intensity of the engine in a plateau environment is determined according to the target emission factor by using a preset greenhouse effect intensity formula, and the preset greenhouse effect intensity formula is: In the formula, is the intensity of the greenhouse effect, is the corrected carbon dioxide emission factor, is the corrected methane emission factor, is the corrected nitrous oxide emission factor; The current environmental parameters include: current altitude and current ambient temperature; The step of determining the target correction coefficient according to the current operating condition parameters and the current plateau environment parameters includes: Determine whether the current operating condition parameter change rate is greater than the critical operating condition parameter change rate; If yes, determining the target concentration correction coefficient of the greenhouse gas according to the current operating condition parameter change rate; determining a target altitude correction factor according to the current altitude; Determining a target temperature correction coefficient according to the current ambient temperature; using the target concentration correction coefficient, the target altitude correction coefficient, and the target temperature correction coefficient as target correction coefficients; The step of correcting the initial emission factor by using the target correction coefficient to obtain the target emission factor comprises: Correcting the initial emission factor based on the target concentration correction factor, the target altitude correction factor, and the target temperature correction factor using a preset emission factor correction formula to obtain a target emission factor; The preset emission factor correction formula is: In the formula, E X（i,j） is the current emission concentration of greenhouse gas X, is the intake air mass flow rate, is the fuel mass flow rate, is the ratio of greenhouse gas density to exhaust density, is the speed in the current operating parameters, is the torque in the current working condition parameters, is the target concentration correction factor, is the target altitude correction factor, is the target temperature correction coefficient, is the target emission factor.

2. The method for determining the greenhouse effect intensity of a plateau engine as claimed in claim 1, characterized in that: Before the step of determining whether the current operating condition parameter change rate is greater than the critical operating condition parameter change rate, the method further includes: Obtaining the concentration measurement value of the greenhouse gas under different operating parameter change rates; Obtaining a preset emission concentration mapping table, wherein the preset emission concentration mapping table includes correlation relationships between different operating condition parameters and corresponding greenhouse gas emission concentrations; Determine the emission concentration record value corresponding to each of the concentration measurement values ​​in the preset emission factor mapping table; Calculating the difference between each of the concentration measurement values ​​and the corresponding emission concentration record value to obtain the concentration value deviation corresponding to each of the concentration measurement values; When there is a target concentration measurement value whose concentration value deviation is greater than the preset deviation, the operating condition parameter change rate corresponding to the target concentration measurement value is used as the critical operating condition parameter change rate.

3. The method for determining the greenhouse effect intensity of a plateau engine as claimed in claim 1, characterized in that: If so, the step of determining the target concentration correction coefficient of the greenhouse gas according to the current operating condition parameter change rate includes: If yes, then obtain a concentration correction numerical relationship, wherein the concentration correction numerical relationship is determined by numerically fitting the change rates of different transition operating condition parameters and the corresponding concentration change rates, and is used to characterize the mapping relationship between the change rates of each transition operating condition parameter and the corresponding concentration change rate; Wherein, the transition operating condition parameter change rate is an operating condition parameter change rate having a value greater than the critical operating condition parameter change rate; Determining a first target concentration change rate corresponding to the current operating condition parameter change rate through the concentration correction numerical relationship; The first target concentration change rate is used as the target concentration correction coefficient of the greenhouse gas.

4. The method for determining the greenhouse effect intensity of a plateau engine as claimed in claim 1, characterized in that: The step of determining the target altitude correction coefficient according to the current altitude comprises: Acquire an altitude correction numerical relationship, wherein the altitude correction numerical relationship is determined by numerically fitting different altitudes and corresponding concentration change rates, and is used to characterize a mapping relationship between each altitude and the corresponding concentration change rate; Determine the second target concentration change rate corresponding to the current altitude through the altitude correction numerical relationship; The second target concentration change rate is used as a target altitude correction coefficient.

5. The method for determining the greenhouse effect intensity of a plateau engine as claimed in claim 1, characterized in that: The step of determining the target temperature correction coefficient according to the current ambient temperature includes: Acquire a temperature correction model, wherein the temperature correction model is determined by numerically fitting different ambient temperatures and corresponding concentration change rates, and is used to characterize a mapping relationship between each of the ambient temperatures and the corresponding concentration change rates; Determine the third target concentration change rate corresponding to the current altitude temperature by using the temperature correction model; The third target concentration change rate is used as a target temperature correction coefficient.

6. A device for determining the greenhouse effect intensity of a plateau engine, characterized in that: The device comprises: An emission factor determination module, used to determine the initial emission factor of greenhouse gases of the engine under current operating parameters, wherein the initial emission factor includes: an initial carbon dioxide emission factor, an initial methane emission factor, and an initial nitrous oxide emission factor; A correction coefficient determination module, used to determine a target correction coefficient according to the current operating condition parameters and the current plateau environment parameters; An emission factor correction module, used to correct the initial emission factor by the target correction coefficient to obtain a target emission factor, wherein the target emission factor includes: a corrected carbon dioxide emission factor, a corrected initial methane emission factor, and a corrected nitrous oxide emission factor; The greenhouse effect intensity determination module is used to determine the greenhouse effect intensity of the engine in a plateau environment according to the target emission factor by using a preset greenhouse effect intensity formula, wherein the preset greenhouse effect intensity formula is: In the formula, is the intensity of the greenhouse effect, is the corrected carbon dioxide emission factor, is the corrected methane emission factor, is the corrected nitrous oxide emission factor; The current environmental parameters include: current altitude and current ambient temperature; The correction coefficient determination module is also used for: Determine whether the current operating condition parameter change rate is greater than the critical operating condition parameter change rate; If yes, determining the target concentration correction coefficient of the greenhouse gas according to the current operating condition parameter change rate; determining a target altitude correction factor according to the current altitude; Determining a target temperature correction coefficient according to the current ambient temperature; using the target concentration correction coefficient, the target altitude correction coefficient, and the target temperature correction coefficient as target correction coefficients; The emission factor correction module is also used to: Correcting the initial emission factor based on the target concentration correction factor, the target altitude correction factor, and the target temperature correction factor using a preset emission factor correction formula to obtain a target emission factor; The preset emission factor correction formula is: In the formula, E X（i,j） is the current emission concentration of greenhouse gas X, is the intake air mass flow rate, is the fuel mass flow rate, is the ratio of greenhouse gas density to exhaust density, is the speed in the current operating parameters, is the torque in the current working condition parameters, is the target concentration correction factor, is the target altitude correction factor, is the target temperature correction coefficient, is the target emission factor.

7. A device for determining the greenhouse effect intensity of a plateau engine, characterized in that: The device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for determining the intensity of greenhouse effect of a plateau engine as described in any one of claims 1 to 5.

8. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for determining the intensity of the greenhouse effect of a plateau engine as described in any one of claims 1 to 5 are implemented.

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