A method and device for evaluating emissions of internal combustion locomotives

Abstract

The present invention provides a method and device for evaluating the emission of a diesel locomotive, the method comprising: obtaining the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalizing them respectively; obtaining all 8-gear combinations; obtaining the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8-gear; obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the emission weight of each gear of the standard 8 gears; obtaining the gas emission of the diesel locomotive according to the emission weight of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula. The device is used to execute the above method. The method and device for evaluating the emission of a diesel locomotive provided by the embodiment of the present invention improve the accuracy of the gas emission evaluation of the diesel locomotive.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a method and a device for evaluating the emission of an internal combustion locomotive. Background Art

[0002] Energy conservation and emission reduction have put forward high requirements for the accurate assessment of railway locomotive diesel engine emissions. In the prior art, the standard 8-gear assessment method is usually used in the emission assessment of diesel locomotives. However, there is currently no suitable emission assessment method for diesel locomotives with more than 8 gears, such as 12-gear diesel locomotives. Therefore, how to conduct emission assessment of diesel locomotives with more than 8 gears has become an urgent problem to be solved in this field. Summary of the invention

[0003] In view of the problems in the prior art, an embodiment of the present invention provides an emission evaluation method and device for a diesel locomotive, which can at least partially solve the problems in the prior art.

[0004] In one aspect, the present invention provides a method for evaluating emissions of a diesel locomotive, comprising:

[0005] Obtain the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalize them respectively; wherein N is a positive integer greater than or equal to 9;

[0006] Combine the N gears into adjacent gear combinations to obtain all 8-gear combinations, and calculate the normalized power of each 8-gear combination;

[0007] The optimal gear combination is obtained according to the normalized power of various 8-gear combinations and the normalized power of the standard 8-gear combination;

[0008] According to the emission weights of the optimal gear combination and each gear of the standard 8 gears, obtaining the emission weights of each gear in the N gears of the optimal gear combination;

[0009] The gas emissions of the internal combustion locomotive are obtained according to the emission weight of each gear in N gears, the gas emissions per unit time in each gear and the emission calculation formula; wherein the emission calculation formula is preset.

[0010] In another aspect, the present invention provides an emission evaluation device for a diesel locomotive, comprising:

[0011] An acquisition unit, used to acquire the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalize them respectively; wherein N is a positive integer greater than or equal to 9;

[0012] The first obtaining unit is used to combine the N gears into adjacent gear combinations to obtain all 8 gear combinations, and calculate the normalized power of each 8-gear combination;

[0013] A second obtaining unit is used to obtain an optimal gear combination according to the normalized power of each 8-gear combination and the normalized power of the standard 8-gear;

[0014] A third obtaining unit is used to obtain the emission weight of each gear in the N gears of the optimal gear combination according to the emission weight of each gear of the optimal gear combination and the standard 8 gears;

[0015] The fourth obtaining unit is used to obtain the gas emissions of the internal combustion locomotive according to the emission weight of each gear in the N gears, the gas emissions per unit time in each gear and the emission calculation formula; wherein the emission calculation formula is preset.

[0016] On the other hand, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method for evaluating emissions of a diesel locomotive described in any of the above embodiments are implemented.

[0017] In yet another aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for evaluating emissions of a diesel locomotive as described in any of the above embodiments.

[0018] The emission evaluation method and device for a diesel locomotive provided in an embodiment of the present invention obtain the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalize them respectively, perform gear combinations on the N gears to obtain all 8-gear combinations, and calculate the normalized power of each type of 8-gear combination, obtain the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8-gear, obtain the emission weight of each gear in the N gears of the optimal gear combination according to the emission weight of each gear of the optimal gear combination and the standard 8 gears, obtain the gas emission of the diesel locomotive according to the emission weight of each gear of the optimal gear combination, the gas emission per unit time in each gear and the emission calculation formula, thereby realizing the gas emission evaluation of diesel locomotives with more than 8 gears and improving the accuracy of the gas emission evaluation of diesel locomotives. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 It is a flow chart of the method for evaluating the emission of a diesel locomotive provided in the first embodiment of the present invention.

[0021] Figure 2 It is a flow chart of a method for evaluating emissions of a diesel locomotive provided in a second embodiment of the present invention.

[0022] Figure 3 It is a flow chart of a method for evaluating emissions of a diesel locomotive provided in a third embodiment of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of an emission evaluation device for a diesel locomotive provided in a fourth embodiment of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of an emission evaluation device for a diesel locomotive provided in the fifth embodiment of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of an emission evaluation device for a diesel locomotive provided in a sixth embodiment of the present invention.

[0026] Figure 7 It is a schematic diagram of the physical structure of an electronic device provided by the seventh embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily.

[0028] The execution subject of the internal combustion engine vehicle emission evaluation method provided in the embodiment of the present invention includes but is not limited to a computer.

[0029] In order to facilitate the understanding of the technical solution provided by the present application, the research background of the technical solution of the present application is briefly described below. In the emission assessment of some diesel locomotives in China in recent years, according to the 10-operating conditions method (8 gears) stipulated by the National Environmental Protection Agency (EPA) of a certain country, the emission weights of diesel locomotives stipulated by the EPA are mainly determined based on the operating load rate of 8-gear diesel locomotives in a certain country, while some domestic diesel locomotives adopt a design method with more than 8 gears. Obviously, the 10-operating conditions method stipulated by the EPA is not suitable for the actual use of diesel locomotives in China to a certain extent. Therefore, an embodiment of the present invention provides an emission assessment method for a diesel locomotive, which can realize the evaluation of gas emissions of diesel locomotives with more than 8 gears.

[0030] Figure 1 FIG. 1 is a flow chart of a method for evaluating emissions of a diesel locomotive provided by an embodiment of the present invention. Figure 1 As shown, the emission evaluation method of a diesel locomotive provided by an embodiment of the present invention includes:

[0031] S101, obtaining the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalizing them respectively; wherein N is a positive integer greater than or equal to 9;

[0032] Specifically, the power of each gear of a diesel engine of an N-gear internal combustion engine is obtained, and then the power of each gear is normalized by dividing the power of each gear by the maximum value of the power of the N gears. The power of each gear of a diesel engine of a standard 8-gear internal combustion engine is obtained, and then the power of each gear is normalized by dividing the power of each gear by the maximum value of the power of 8 gears in the standard 8 gears. The power normalized values ​​of the 8 gears can be obtained. Wherein, N is a positive integer greater than or equal to 9.

[0033] S102, combining N gears into adjacent gear combinations to obtain all 8-gear combinations, and calculating the normalized power of each 8-gear combination;

[0034] Specifically, for N gears, some adjacent gears in the N gears are combined to reduce the N gears to 8 combined gears, and an 8-gear combination can be obtained. Among the 8 combined gears, each combined gear includes at least one gear. In the embodiment of the present invention, a combined gear that only includes one gear is called a single gear, and a combined gear that includes multiple gears is called a multi-combination gear. Repeat the above process to obtain all 8-gear combinations. For each type of 8-gear combination, the normalized power mean of each combined gear in each type of 8-gear combination can be calculated based on the normalized power of the gear in each combined gear in each type of 8-gear combination as the normalized power of each combined gear, thereby obtaining the normalized power of each type of 8-gear combination.

[0035] For example, N is 12, and there are 12 gears, namely T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, and T12. T8, T9, T10, T11, and T12 can be combined to obtain a multi-combination gear T8-12, and the obtained 8-gear combination is T1, T2, T3, T4, T5, T6, T7, and T8-12. T1 and T2 can be combined to obtain a multi-combination gear T1-2, and T9, T10, T11, and T12 can be combined to obtain a multi-combination gear T9-12, and the obtained 8-gear combination is T1-2, T3, T4, T5, T6, T7, T8, and T9-12. T1 and T2 can be combined to obtain a multi-combination gear T1-2, T3 and T4 can be combined to obtain a multi-combination gear T3-4, T7 and T8 can be combined to obtain a multi-combination gear T7-8, T11 and T12 can be combined to obtain a multi-combination gear T11-12, then the 8-gear combinations obtained are T1-2, T3-4, T5, T6, T7-8, T9, T10, T11-12.

[0036] S103, obtaining an optimal gear combination according to the normalized power of each 8-gear combination and the normalized power of the standard 8-gear combination;

[0037] Specifically, according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8-gear, one type of 8-gear combination is selected from each type of 8-gear combination as the optimal gear combination.

[0038] For example, first, according to the normalized power of each combined gear in each type of 8-gear combination, the normalized power mean of each combined gear in each type of 8-gear combination is obtained; then, according to the normalized power mean of each combined gear in each type of 8-gear combination and the normalized power of each gear in the standard 8 gears, the global Euclidean distance between each type of gear combination and the standard 8 gears is calculated; finally, the 8-gear combination with the smallest global Euclidean distance is obtained as the optimal gear combination.

[0039] S104, obtaining an emission weight of each gear in N gears of the optimal gear combination according to the emission weight of each gear of the standard 8 gears;

[0040] Specifically, the emission weights of each of the standard 8 gears are known, and by matching each gear in the optimal gear combination with the standard 8 gears, the emission weights of each gear in the N gears of the optimal gear combination can be obtained.

[0041] S105. Obtain the gas emissions of the internal combustion locomotive according to the emission weight and power of each gear in the N gears, the gas emissions per unit time in each gear, and the emissions calculation formula; wherein the emissions calculation formula is preset.

[0042] Specifically, after obtaining the emission weight of each gear in N gears, the gas emission per unit time in each gear is obtained, and the gas emission per unit time and the emission weight and power of each gear in N gears are brought into the emission calculation formula to calculate the gas emission of the internal combustion locomotive. The gas emission per unit time in each gear can be obtained through experiments. Gases include CO, NO x , CH.

[0043] The emission evaluation method for a diesel locomotive provided in an embodiment of the present invention obtains the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalizes them respectively, combines the N gears into adjacent gear combinations, obtains all 8-gear combinations, and calculates the normalized power of each type of 8-gear combination, obtains the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8-gear, obtains the emission weight of each gear in the N gears of the optimal gear combination according to the emission weights of each gear of the optimal gear combination and the standard 8 gears, obtains the gas emission of the diesel locomotive according to the emission weight and power of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula, thereby realizing the gas emission evaluation of diesel locomotives with more than 8 gears and improving the accuracy of the gas emission evaluation of diesel locomotives.

[0044] Figure 2 FIG. 1 is a flow chart of a method for evaluating the emission of a diesel locomotive provided by a second embodiment of the present invention. Figure 2 As shown, based on the above embodiments, further, obtaining the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8-gear includes:

[0045] S201, obtaining a normalized power mean of each combined gear position in each type of 8-gear combination according to the normalized power of each combined gear position in each type of 8-gear combination; wherein each combined gear position is a single gear position or a multi-combination gear position;

[0046] Specifically, for a single gear in each type of 8-gear combination, the normalized power of the gears included in the single gear can be directly obtained as the normalized power mean of the single gear. For multiple combinations of gears in each type of 8-gear combination, the normalized power of each gear in the multiple combinations of gears is obtained, and then the average value of the normalized power of each gear in the multiple combinations of gears is calculated as the normalized power mean of the multiple combinations of gears. Finally, the normalized power mean of the 8 combination gears included in each type of 8-gear combination can be obtained.

[0047] For example, for the 8-gear combination T1, T2, T3, T4, T5, T6, T7, T8-12, for the single gear T1, T2, T3, T4, T5, T6, T7, directly obtain the normalized power of the gears T1, T2, T3, T4, T5, T6, T7 as the normalized power mean of the single gears T1, T2, T3, T4, T5, T6, T7, there is a multi-combination gear T8-12, obtain the normalized power p′8, p′9, p′ of the five gears T8, T9, T10, T11 and T12 10 , p′ 11 and p′ 12 , then calculate p′8, p′9, p′ 10 , p′ 11 and p′ 12 The average Calculated As the normalized power mean of multiple combination gears T8-12.

[0048] S202, calculating the global Euclidean distance between each type of gear combination and the standard 8 gears according to the normalized power mean of each combined gear in each type of 8 gear combinations and the normalized power of each gear in the standard 8 gears;

[0049] Specifically, for each type of 8-gear combination, the global Euclidean distance between each type of gear combination and the standard 8 gears can be calculated according to the normalized power mean of each gear in the 8-gear combination and the normalized power of each gear in the standard 8 gears.

[0050] For example, according to the formula Calculate the global Euclidean distance D between the jth 8-gear combination and the standard 8-gear combination j , p i represents the normalized power of the i-th gear in the standard 8 gears, It represents the normalized power mean of the i-th combination gear in the j-th 8-gear combination, where i is a positive integer and i is less than or equal to 8.

[0051] S203, obtaining the 8-gear combination with the smallest global Euclidean distance as the optimal gear combination.

[0052] Specifically, after obtaining the global Euclidean distance between each type of gear combination and the standard 8 gears, the global Euclidean distances are compared to obtain the smallest global Euclidean distance. The 8-gear combination corresponding to the smallest global Euclidean distance is taken as the optimal gear combination.

[0053] Figure 3 FIG. 1 is a flow chart of a method for evaluating the emission of a diesel locomotive provided in a third embodiment of the present invention. Figure 3 As shown, based on the above embodiments, further, obtaining the emission weight of each gear in N gears according to the emission weight of each gear of the optimal gear combination and the standard 8 gears includes:

[0054] S301, making one-to-one correspondence between each combined gear in the optimal gear combination and each gear in the standard 8 gears according to the gear sequence; wherein each combined gear is a single gear or a multi-combination gear;

[0055] Specifically, the optimal gear combination includes 8 combined gears, and there are single gears and multiple combined gears in the 8 combined gears. The single gear has only one gear, and the multiple combined gears include two or more gears. Each combined gear in the optimal gear combination is matched one-to-one with each gear in the standard 8 gears according to the gear sequence, and each combined gear uniquely corresponds to one gear in the standard 8 gears. The gear sequence can be in the order of the standard 8 gears from small to large, or in the order of the standard 8 gears from large to small, and is set according to actual needs, and is not limited in the embodiment of the present invention.

[0056] For example, the optimal gear combination includes 8 sequentially arranged gears, namely, Z1, Z2, Z3, Z4, Z5, Z6, Z7, and Z8. The gear power corresponding to Z1 is less than the gear power corresponding to Z8. The standard 8 gears include 8 sequentially arranged gears, namely, B1, B2, B3, B4, B5, B6, B7, and B8. The gear power corresponding to B1 is less than the gear power corresponding to B8. Z1 is matched with B1, Z2 with B2, Z3 with B3, and so on, until Z8 is matched with B8.

[0057] S302: If a single gear in the optimal gear combination corresponds to a gear in the standard eight gears, the emission weight of the gear in the standard eight gears is used as the emission weight of the single gear in the optimal gear combination;

[0058] Specifically, after the combined gear in the optimal gear combination corresponds to the gear in the standard 8 gears, if the combined gear is a single gear, the emission weight of the gear in the standard 8 gears can be directly obtained as the corresponding emission weight of the single gear. Since the single gear only includes one gear, the emission weight of the single gear is the emission weight of the included gear. Among them, the emission weight of each gear in the standard 8 gears is known.

[0059] For example, the single gear Z1 included in the optimal gear combination corresponds to the gear B1 included in the standard 8-gear combination, and the emission weighted value of the gear B1 is obtained as the emission weighted value of the single gear Z1.

[0060] S303. If multiple gear combinations in the optimal gear combination correspond to gears in the standard 8 gears, the emission weight of each gear in the multiple gear combinations is calculated based on the normalized power of each gear in the multiple gear combinations, the emission weight of the corresponding gear in the standard 8 gears, and the emission weight allocation formula.

[0061] Specifically, after the multiple combination gears in the optimal gear combination correspond to the gears in the standard 8 gears, if the combination gear is a multiple combination gear, then the normalized power of each gear in the multiple combination gears is obtained, and the emission weight of the gear in the standard 8 gears corresponding to the multiple combination gears is brought into the emission weight allocation formula to calculate and obtain the emission weight of each gear in the multiple combination gears. The emission weight allocation formula is preset.

[0062] It is understandable that after obtaining the emission weighted value of each single gear in the optimal gear combination and the emission weighted value of each gear in each combined gear, the emission weighted value of each gear in the N gears is obtained.

[0063] On the basis of the above embodiments, further, the emission weight allocation formula is:

[0064]

[0065] Among them, ω α represents the emission weight of the αth gear in the optimal gear combination, p′ α represents the normalized power of the αth gear in the multi-combination gear in the optimal gear combination, u i It represents the emission weight of the i-th gear of the standard 8 gears corresponding to the multi-combination gears in the optimal gear combination, α is a positive integer and α is less than or equal to l, and l is the total number of gears included in the multi-combination gears in the optimal gear combination.

[0066] Specifically, the normalized power of each gear of the multiple gear combinations in the optimal gear combination, the emission weight u of the i-th gear of the standard 8 gears corresponding to the multiple gear combinations in the optimal gear combination are obtained. i , and then substitute it into the formula In the above, the emission weight of each gear of the multiple gear combinations in the optimal gear combination can be calculated. Wherein, the multiple gear combinations correspond to the i-th gear of the standard 8 gears.

[0067] The normalized power of each gear in the optimal gear combination is expressed as follows:

[0068] {p′1}, {p′2, …, p′ 1+k}、{p′ 2+k ,…,p′ 1+k+l}, …{p′ n-m+1 ,…,p′ n}

[0069] Among them, k≥1, l≥1, m≥1, the third combination gear of the optimal gear combination includes l gears, and the emission weights of the l gears satisfy the following formula:

[0070]

[0071] The third gear of the optimal gear combination corresponds to the third gear of the standard 8 gears. The test time of the third gear of the standard 8 gears of the diesel locomotive is t3 and the power of the third gear is p3. Based on the principle of generating the same energy, the working times of the l gears in the third gear of the optimal gear combination are:

[0072]

[0073] Combined with the working time proportion of each gear in the third combination gear of the optimal gear combination, the emission weight distribution of each gear in the third combination gear is:

[0074]

[0075] Among them, u3 is the emission weight of the third gear of the standard 8 gears. Based on the above reasoning process, the emission weight allocation formula can be obtained as follows:

[0076]

[0077] On the basis of the above embodiments, further, the emission calculation formula is:

[0078]

[0079] Where M represents the gas emission per unit of electricity of the diesel locomotive, m xIndicates the amount of gas discharged per unit time at the xth gear, ω x Indicates the emission weight of the xth gear among N gears, P x It represents the power of the xth gear among N gears, where x is a positive integer and is less than or equal to N.

[0080] Specifically, the gas emission per unit time in each gear position m x It can be obtained in advance through experiments, and the gas can be CO, NO x , CH gas. Substitute the gas emission per unit time in the xth gear, the emission weight of each gear in N gears, and the power of each gear in N gears into the formula The gas emission M per unit of electricity of the diesel locomotive can be calculated.

[0081] For example, N is equal to 12, and the power of the 12 gears is P1, P2, P3...P 12 , the emission weights of the 12 gears are ω1, ω2, ω3...ω 12 , the CO emissions per unit time in the 12 gears are m1, m2, m3...m 12 , P1, P2, P3, ... 12 ,ω1,ω2,ω3...ω 12 , and m1, m2, m3...m 12 Substitute into the formula The CO emissions per unit of electricity of a diesel locomotive can be calculated as co .

[0082] Figure 4 FIG. 4 is a schematic diagram of the structure of an emission evaluation device for a diesel locomotive provided in a fourth embodiment of the present invention. Figure 4 As shown, an emission evaluation device for a diesel locomotive provided by an embodiment of the present invention includes an acquisition unit 401, a first acquisition unit 402, a second acquisition unit 403, a third acquisition unit 404 and a fourth acquisition unit 405, wherein:

[0083] The acquisition unit 401 is used to acquire the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalize them respectively, and calculate the normalized power of each type of 8-gear combination; wherein N is a positive integer greater than or equal to 9; the first acquisition unit 402 is used to combine the N gears into adjacent gears to obtain all 8-gear combinations; the second acquisition unit 403 is used to obtain the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8 gears; the third acquisition unit 404 is used to obtain the emission weight of each gear in the N gears of the optimal gear combination according to the emission weight of each gear of the standard 8 gears; the fourth acquisition unit 405 is used to obtain the gas emission of the diesel locomotive according to the emission weight of each gear in the N gears, the gas emission per unit time in each gear and the emission calculation formula; wherein the emission calculation formula is preset.

[0084] Specifically, the acquisition unit 401 acquires the power of each gear of the diesel engine of the N-gear internal combustion engine locomotive, and then divides the power of each gear by the maximum value of the power of the N gears for normalization, so as to obtain the normalized power values ​​of the N gears. The power of each gear of the diesel engine of the standard 8-gear internal combustion engine locomotive is acquired, and then the power of each gear is divided by the maximum value of the power of 8 gears in the standard 8 gears for normalization, so as to obtain the normalized power values ​​of the 8 gears. Wherein, N is a positive integer greater than or equal to 9.

[0085] For N gears, the first obtaining unit 402 combines some adjacent gears in the N gears to reduce the N gears to 8 combined gears, and an 8-gear combination can be obtained. Among the 8 combined gears, each combined gear includes at least one gear. In the embodiment of the present invention, a combined gear that only includes one gear is called a single gear, and a combined gear that includes multiple gears is called a multi-combination gear. Repeat the above process, and the first obtaining unit 402 obtains all 8-gear combinations. For each type of 8-gear combination, the normalized power of each combined gear in each type of 8-gear combination can be calculated based on the normalized power of the gear in each combined gear in each type of 8-gear combination to obtain the normalized power of each combined gear in each type of 8-gear combination as the normalized power of each combined gear, thereby obtaining the normalized power of each type of 8-gear combination.

[0086] The second obtaining unit 403 selects one type of 8-gear combination from various types of 8-gear combinations as the optimal gear combination according to the normalized power of various types of 8-gear combinations and the normalized power of the standard 8-gear combination.

[0087] The emission weights of each gear of the standard 8 gears are known, and the third obtaining unit 404 matches each gear in the optimal gear combination with the standard 8 gears to obtain the emission weights of each gear in the N gears of the optimal gear combination.

[0088] After obtaining the emission weight of each gear in the N gears, the fourth obtaining unit 405 obtains the gas emission per unit time in each gear, and brings the gas emission per unit time and the emission weight and power of each gear in the N gears into the emission calculation formula to calculate the gas emission of the internal combustion locomotive. The gas emission per unit time in each gear can be obtained through experiments. Gases include CO, NO x , CH.

[0089] The emission evaluation device for a diesel locomotive provided in an embodiment of the present invention obtains the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalizes them respectively, combines the N gears into adjacent gear combinations, obtains all 8-gear combinations, and calculates the normalized power of each type of 8-gear combination, obtains the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8 gears, obtains the emission weight of each gear in the N gears of the optimal gear combination according to the emission weights of each gear of the optimal gear combination and the standard 8 gears, obtains the gas emission of the diesel locomotive according to the emission weight and power of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula, thereby realizing the gas emission evaluation of diesel locomotives with more than 8 gears and improving the accuracy of the gas emission evaluation of diesel locomotives.

[0090] Figure 5 FIG. 5 is a schematic diagram of the structure of an emission evaluation device for a diesel locomotive provided in a fifth embodiment of the present invention. Figure 5 As shown, based on the above embodiments, further, the second obtaining unit 402 includes an obtaining subunit 4021, a calculating subunit 4022 and an acquiring subunit 4023, wherein:

[0091] The acquisition subunit 4021 is used to obtain the normalized power mean of each combined gear in each type of 8-gear combination according to the normalized power of the gear in each combined gear in each type of 8-gear combination; wherein each combined gear is a single gear or a multi-combination gear; the calculation subunit 4022 is used to calculate the global Euclidean distance between each type of gear combination and the standard 8 gears according to the normalized power mean of each combined gear in each type of 8-gear combination and the normalized power of each gear in the standard 8 gears; the acquisition subunit 4023 is used to obtain the 8-gear combination with the smallest global Euclidean distance as the optimal gear combination.

[0092] Figure 6 is a schematic diagram of the structure of an emission evaluation device for a diesel locomotive provided in a sixth embodiment of the present invention. Figure 6As shown, based on the above embodiments, further, the third obtaining unit 404 includes a corresponding subunit 4041, a first judging subunit 4042 and a second judging subunit 4043, wherein:

[0093] The corresponding subunit 4041 is used to correspond each combined gear in the optimal gear combination to each gear in the standard 8 gears in a one-to-one manner in the gear order; wherein each combined gear is a single gear or multiple combined gears; wherein each combined gear is a single gear or multiple combined gears; the first judgment subunit 4042 is used to, if a single gear in the optimal gear combination corresponds to a gear in the standard 8 gears, then use the emission weight of the gear in the standard 8 gears as the emission weight of the single gear in the optimal gear combination; the second judgment subunit 4043 is used to, if multiple combined gears in the optimal gear combination correspond to the gear in the standard 8 gears, then calculate the emission weight of each gear in the multiple combined gears according to the normalized power of each gear in the multiple combined gears, the corresponding emission weight of the gear in the standard 8 gears and the emission weight allocation formula; wherein the emission weight allocation formula is preset.

[0094] On the basis of the above embodiments, further, the emission weight allocation formula is:

[0095]

[0096] Among them, ω α represents the emission weight of the αth gear in the optimal gear combination, p′ α represents the normalized power of the αth gear in the multi-combination gear in the optimal gear combination, u i It represents the emission weight of the i-th gear of the standard 8 gears corresponding to the multi-combination gears in the optimal gear combination, α is a positive integer and α is less than or equal to l, and l is the total number of gears included in the multi-combination gears in the optimal gear combination.

[0097] On the basis of the above embodiments, further, the emission calculation formula is:

[0098]

[0099] Where M represents the gas emission per unit of electricity of the diesel locomotive, m x Indicates the amount of gas discharged per unit time at the xth gear, ω x Indicates the emission weight of the xth gear among N gears, P x It represents the power of the xth gear among N gears, where x is a positive integer and is less than or equal to N.

[0100] The embodiments of the apparatus provided in the embodiments of the present invention can be specifically used to execute the processing flow of the above-mentioned method embodiments, and its functions are not described in detail here, and reference can be made to the detailed description of the above-mentioned method embodiments.

[0101] Figure 7 is a schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention, such as Figure 7 As shown, the electronic device may include: a processor (processor) 701, a communication interface (Communications Interface) 702, a memory (memory) 703 and a communication bus 704, wherein the processor 701, the communication interface 702, and the memory 703 communicate with each other through the communication bus 704. The processor 701 can call the logic instructions in the memory 703 to execute the following method: obtain the power of each gear of the N-gear diesel locomotive and the power of each gear of the standard 8-gear diesel locomotive, and normalize them respectively; wherein N is a positive integer greater than or equal to 9; combine the N gears into adjacent gears to obtain all 8-gear combinations; obtain the optimal gear combination based on the normalized power of each type of 8-gear combination and the normalized power of the standard 8 gears; obtain the emission weight of each gear in the N gears based on the emission weight of each gear in the standard 8 gears; obtain the gas emission of the diesel locomotive based on the emission weight of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula; wherein the emission calculation formula is preset.

[0102] In addition, the logic instructions in the above-mentioned memory 703 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0103] The present embodiment discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the methods provided by the above-mentioned method embodiments, for example, including: obtaining the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalizing them respectively; wherein N is a positive integer greater than or equal to 9; combining the N gears into adjacent gear combinations to obtain all 8-gear combinations; obtaining an optimal gear combination based on the normalized power of each type of 8-gear combination and the normalized power of the standard 8 gears; obtaining the emission weight of each gear in the N gears based on the emission weight of each gear in the standard 8 gears; obtaining the gas emission of the diesel locomotive based on the emission weight of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula; wherein the emission calculation formula is preset.

[0104] The present embodiment provides a computer-readable storage medium, which stores a computer program, and the computer program enables the computer to execute the methods provided by the above-mentioned method embodiments, for example, including: obtaining the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalizing them respectively; wherein N is a positive integer greater than or equal to 9; combining the N gears into adjacent gear combinations to obtain all 8-gear combinations; obtaining the optimal gear combination based on the normalized power of each type of 8-gear combination and the normalized power of the standard 8 gears; obtaining the emission weight of each gear in the N gears based on the emission weight of each gear in the standard 8 gears; obtaining the gas emission of the diesel locomotive based on the emission weight of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula; wherein the emission calculation formula is preset.

[0105] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0106] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0107] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0108] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "a specific embodiment", "some embodiments", "for example", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0110] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for evaluating emissions of a diesel locomotive, characterized in that: include: Obtain the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalize them respectively; wherein N is a positive integer greater than or equal to 9; Combine the N gears into adjacent gear combinations to obtain all 8-gear combinations, and calculate the normalized power of each 8-gear combination; The optimal gear combination is obtained according to the normalized power of various 8-gear combinations and the normalized power of the standard 8-gear combination; According to the emission weights of the optimal gear combination and each gear of the standard 8 gears, obtaining the emission weights of each gear in the N gears of the optimal gear combination; According to the emission weight and power of each gear in N gears, the gas emission per unit time in each gear and the emission calculation formula, the gas emission of the internal combustion locomotive is obtained; wherein the emission calculation formula is preset; Wherein, obtaining the optimal gear combination according to the normalized power of each 8-gear combination and the normalized power of the standard 8-gear includes: According to the normalized power of each gear in each combination gear in each type of 8-gear combination, the normalized power mean of each combination gear in each type of 8-gear combination is obtained; wherein each combination gear is a single gear or multiple combination gears; According to the normalized power mean of each gear in each type of 8-gear combination and the normalized power of each gear in the standard 8-gear combination, the global Euclidean distance between each type of gear combination and the standard 8-gear combination is calculated; Obtain the 8-gear combination with the smallest global Euclidean distance as the optimal gear combination; Wherein, obtaining the emission weight of each gear in N gears of the optimal gear combination according to the emission weight of the optimal gear combination and the standard 8 gears includes: Each combined gear in the optimal gear combination is matched to each gear in the standard 8 gears in a one-to-one manner according to the gear sequence; wherein each combined gear is a single gear or a multi-combination gear; If a single gear in the optimal gear combination corresponds to a gear in the standard 8 gears, the emission weight of the gear in the standard 8 gears is used as the emission weight of the single gear in the optimal gear combination; If multiple gear combinations in the optimal gear combination correspond to gears in the standard 8 gears, the emission weight of each gear in the multiple gear combinations is calculated based on the normalized power of each gear in the multiple gear combinations, the emission weight of the corresponding gear in the standard 8 gears, and the emission weight allocation formula; wherein the emission weight allocation formula is preset.

2. The method according to claim 1, characterized in that The emission weight allocation formula is: Among them, ω α represents the emission weight of the αth gear in the optimal gear combination, p′ α represents the normalized power of the αth gear in the multi-combination gear in the optimal gear combination, u i It represents the emission weight of the i-th gear of the standard 8 gears corresponding to the multi-combination gears in the optimal gear combination, α is a positive integer and α is less than or equal to l, and l is the total number of gears included in the multi-combination gears in the optimal gear combination.

3. The method according to claim 1 or 2, characterized in that: The emission calculation formula is: Where M represents the gas emission per unit of electricity of the diesel locomotive, m x Indicates the amount of gas discharged per unit time at the xth gear, ω x Indicates the emission weight of the xth gear among N gears, P x It represents the power of the xth gear among N gears, where x is a positive integer and is less than or equal to N.

4. An emission evaluation device for a diesel locomotive, characterized in that: include: An acquisition unit, used to acquire the power of each gear of an N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and normalize them respectively; wherein N is a positive integer greater than or equal to 9; The first obtaining unit is used to combine the N gears into adjacent gear combinations to obtain all 8 gear combinations, and calculate the normalized power of each 8-gear combination; A second obtaining unit is used to obtain an optimal gear combination according to the normalized power of each 8-gear combination and the normalized power of the standard 8-gear; A third obtaining unit is used to obtain the emission weight of each gear in the N gears of the optimal gear combination according to the emission weight of each gear of the optimal gear combination and the standard 8 gears; a fourth obtaining unit, for obtaining the gas emission of the internal combustion locomotive according to the emission weight and power of each gear in the N gears, the gas emission per unit time in each gear, and the emission calculation formula; wherein the emission calculation formula is preset; Wherein, the second obtaining unit comprises: An obtaining subunit, used for obtaining a normalized power mean of each combined gear in each type of 8-gear combination according to the normalized power of each combined gear in each type of 8-gear combination; wherein each combined gear is a single gear or a plurality of combined gears; A calculation subunit, used for calculating the global Euclidean distance between each type of gear combination and the standard 8 gears according to the normalized power mean of each combined gear in each type of 8 gear combinations and the normalized power of each gear in the standard 8 gears; Obtain a subunit, used to obtain the 8-gear combination with the smallest global Euclidean distance as the optimal gear combination; Wherein, the third obtaining unit includes: A corresponding subunit, used for making a one-to-one correspondence between each combined gear in the optimal gear combination and each gear in the standard 8 gears according to the gear sequence; wherein each combined gear is a single gear or a multi-combination gear; a first judgment subunit, configured to use the emission weight of the gear in the standard 8 gears as the emission weight of the single gear in the optimal gear combination if the single gear in the optimal gear combination corresponds to the gear in the standard 8 gears; The second judgment subunit is used to calculate the emission weight of each gear in the multiple combination gears if the multiple combination gears in the optimal gear combination correspond to the gears in the standard 8 gears, based on the normalized power of each gear in the multiple combination gears, the emission weight of the corresponding gear in the standard 8 gears and the emission weight allocation formula; wherein the emission weight allocation formula is preset.

5. The device according to claim 4, characterized in that The emission weight allocation formula is: Among them, ω α represents the emission weight of the αth gear in the optimal gear combination, p′ α represents the normalized power of the αth gear in the multi-combination gear in the optimal gear combination, u i It represents the emission weight of the i-th gear of the standard 8 gears corresponding to the multi-combination gears in the optimal gear combination, α is a positive integer and α is less than or equal to l, and l is the total number of gears included in the multi-combination gears in the optimal gear combination.

6. The device according to claim 4 or 5, characterized in that The emission calculation formula is: Where M represents the gas emission per unit of electricity of the diesel locomotive, m x Indicates the amount of gas discharged per unit time at the xth gear, ω x Indicates the emission weight of the xth gear among N gears, P x It represents the power of the xth gear among N gears, where x is a positive integer and is less than or equal to N.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 3 are implemented.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

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