CN114493211A - Method and device for estimating discharge capacity of diesel locomotive - Google Patents

Method and device for estimating discharge capacity of diesel locomotive Download PDF

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CN114493211A
CN114493211A CN202210050585.2A CN202210050585A CN114493211A CN 114493211 A CN114493211 A CN 114493211A CN 202210050585 A CN202210050585 A CN 202210050585A CN 114493211 A CN114493211 A CN 114493211A
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张波
张桂南
韩晓军
高翔
黄金
张世聪
李杰波
郭奇宗
宋博洋
王雅婷
陈波
贾志东
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China Academy of Railway Sciences Corp Ltd CARS
China State Railway Group Co Ltd
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology Co Ltd
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China State Railway Group Co Ltd
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology Co Ltd
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Abstract

The invention provides a method and a device for estimating the discharge capacity of an internal combustion locomotive, wherein the method comprises the following steps: acquiring the power of each gear of the N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and respectively normalizing; all 8-gear combinations are obtained; obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear; obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the optimal gear combination and the emission weight of each gear of the standard 8 gears; and obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of the gas in each gear in unit time and an emission amount calculation formula. The device is used for executing the method. The method and the device for evaluating the emission of the internal combustion locomotive improve the accuracy of evaluating the gas emission of the internal combustion locomotive.

Description

Method and device for estimating discharge capacity of diesel locomotive
Technical Field
The invention relates to the technical field of data processing, in particular to a method and a device for estimating the emission of a diesel locomotive.
Background
Energy conservation and emission reduction put high requirements on accurate evaluation of the emission of the diesel engine of the railway locomotive. In the prior art, in the emission evaluation of an internal combustion engine, a standard 8-gear evaluation method is generally adopted. Currently, there is no suitable emission evaluation method for diesel locomotives in 8 gears or above, such as 12 gears. Therefore, how to evaluate the emission of the diesel locomotive by adopting the diesel locomotive with the gear of more than 8 is an urgent problem to be solved in the field.
Disclosure of Invention
In view of the problems in the prior art, embodiments of the present invention provide a method and an apparatus for estimating an emission amount of a diesel locomotive, which can at least partially solve the problems in the prior art.
In one aspect, the invention provides a method for estimating the emission of an internal combustion locomotive, which comprises the following steps:
acquiring the power of each gear of the N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and respectively normalizing; wherein N is a positive integer greater than or equal to 9;
combining N gears with adjacent gears to obtain all 8 gear combinations, and calculating to obtain the normalized power of each 8 gear combination;
obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear;
obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the optimal gear combination and the emission weight of each gear of the standard 8 gears;
obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
In another aspect, the present invention provides an emission amount evaluation device for an internal combustion engine vehicle, including:
the acquiring unit is used for acquiring 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 respectively carrying out normalization; wherein N is a positive integer greater than or equal to 9;
the first obtaining unit is used for combining the N gears with adjacent gears to obtain all 8 gear combinations and calculating to obtain the normalized power of each 8 gear combination;
the second obtaining unit is used for obtaining the optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of the standard 8-gear;
the third obtaining unit is used for obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the optimal gear combination and the emission weight of each gear of the standard 8 gears;
the fourth obtaining unit is used for obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
In another aspect, the present invention provides an electronic device, including a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor executes the program to implement the steps of the method for estimating the amount of emissions of a diesel locomotive according to any of the embodiments.
In still another aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, realizes the steps of the method for estimating the amount of emissions of an internal combustion locomotive according to any one of the above embodiments.
The method and the device for evaluating the emission of the diesel locomotive, provided by the embodiment of the invention, are used for 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, respectively normalizing the power, combining the gears of the N gear to obtain all 8-gear combinations, calculating the normalized power of all 8-gear combinations, obtaining an optimal gear combination according to the normalized power of all 8-gear combinations and the normalized power of the standard 8 gear, obtaining the emission weight of each gear in the N gear of the optimal gear combination according to the emission weight of each gear of the optimal gear combination and the emission weight of each gear of the standard 8 gear, obtaining the gas emission of the diesel locomotive according to the emission weight of each gear of the optimal gear combination, the emission of gas in each gear per unit time and an emission calculation formula, and realizing the evaluation of the gas emission of the diesel locomotive above 8 gears, the accuracy of the gas emission evaluation of the diesel locomotive is improved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a schematic flow chart of an emission amount estimation method of an internal combustion locomotive according to a first embodiment of the present invention.
Fig. 2 is a schematic flow chart of an emission amount estimation method for an internal combustion locomotive according to a second embodiment of the present invention.
Fig. 3 is a schematic flow chart of an emission amount estimation method for an internal combustion locomotive according to a third embodiment of the present invention.
Fig. 4 is a schematic structural view of an emission amount evaluation device of a diesel locomotive according to a fourth embodiment of the present invention.
Fig. 5 is a schematic structural view of an emission amount evaluation device of a diesel locomotive according to a fifth embodiment of the present invention.
Fig. 6 is a schematic structural view of an emission amount evaluation device of a diesel locomotive according to a sixth embodiment of the present invention.
Fig. 7 is a schematic physical structure diagram of an electronic device according to a seventh embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The execution subject of the method for estimating the emission of the diesel locomotive provided by the embodiment of the invention comprises but is not limited to a computer.
In order to facilitate understanding of the technical solutions provided in the present application, the following briefly describes the research background of the technical solutions in the present application. In the evaluation of the internal combustion locomotive emission in recent years in China, according to a 10-operating condition method (8 gears) specified by the national Environmental Protection Agency (EPA) of a country, the internal combustion locomotive emission weight value specified by the EPA is determined mainly according to the internal combustion locomotive application load rate of the 8 gears in the country, and the internal combustion locomotive adopts a design mode of more than 8 gears in the domestic part, so that the 10-operating condition method specified by the EPA is obviously not suitable for the actual domestic application rule of the internal combustion locomotive to a certain extent. Therefore, the embodiment of the invention provides an exhaust emission evaluation method for an internal combustion locomotive, which can realize evaluation of gas exhaust emission of the internal combustion locomotive with the gear of more than 8 gears.
Fig. 1 is a schematic flow chart of an emission amount estimation method of an internal combustion locomotive according to an embodiment of the present invention, and as shown in fig. 1, the emission amount estimation method of an internal combustion locomotive according to an embodiment of the present invention includes:
s101, acquiring the power of each gear of the diesel locomotive with the N gear and the power of each gear of the standard diesel locomotive with the 8 gear, and respectively carrying out normalization; wherein N is a positive integer greater than or equal to 9;
specifically, the power of each gear of the diesel engine of the internal combustion locomotive with the N gears is obtained, and then the power of each gear is divided by the maximum value of the power of the N gears for normalization, so that the power normalized values of the N gears can be obtained. The power of each gear of a diesel engine of a standard 8-gear diesel locomotive is obtained, 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, and power normalized values of 8 gears can be obtained. Wherein N is a positive integer greater than or equal to 9.
S102, combining N gears with adjacent gears to obtain all 8-gear combinations, and calculating to obtain normalized power of each 8-gear combination;
specifically, for N range, combining some adjacent ones of N range, reducing N range to 8 combined range, 8 range combinations can be obtained. Of the 8 combined gear positions, each of which includes at least one gear position, a combined gear position including only one gear position in the embodiment of the present invention is referred to as a single gear position, and a combined gear position including a plurality of gear positions becomes a plurality of combined gear positions. And repeating the process to obtain all 8-gear combinations. For each 8-gear combination, the normalized power mean value of each combination gear in each 8-gear combination can be calculated and obtained according to the normalized power of the gear in each combination gear in each 8-gear combination and is used as the normalized power of each combination gear, so that the normalized power of each 8-gear combination is obtained.
For example, N is 12, there are 12 gears T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, and T12, and T8, T9, T10, T11, and T12 may be combined to obtain a multi-combination gear T8-12, so that the obtained 8 gears are T1, T2, T3, T4, T5, T6, T7, and T8-12. T1 and T2 can be combined to obtain a multi-combination gear T1-2, T9, T10, T11 and T12 can be combined to obtain a multi-combination gear T9-12, and then the obtained 8-gear combination is T1-2, T3, T4, T5, T6, T7, T8 and T9-12. T1 and T2 may be combined to obtain a multi-combination gear T1-2, T3 and T4 may be combined to obtain a multi-combination gear T3-4, T7 and T8 may be combined to obtain a multi-combination gear T7-8, T11 and T12 may be combined to obtain a multi-combination gear T11-12, and then the obtained 8-gear combinations are T1-2, T3-4, T5, T6, T7-8, T9, T10, and T11-12.
S103, obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear;
specifically, according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear, one type of 8-gear combination is screened out from various 8-gear combinations to serve as an optimal gear combination.
For example, firstly, according to the normalized power of the gear in each combined gear in each 8-gear combination, obtaining the normalized power mean value of each combined gear in each 8-gear combination; then calculating to obtain the global Euclidean distance between each class of gear combination and the standard 8 gear according to the normalized power mean value of each combination gear in each class of 8 gear combination and the normalized power of each gear in the standard 8 gear; and finally, acquiring the 8-gear combination with the minimum global Euclidean distance as the optimal gear combination.
S104, obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the optimal gear combination and the emission weight of each gear of the standard 8 gears;
specifically, the emission weight of each gear in the standard 8 gear is known, and by corresponding each gear in the optimal gear combination to the standard 8 gear, the emission weight of each gear in the N gear of the optimal gear combination can be obtained.
S105, obtaining the gas emission amount of the diesel locomotive according to the emission weight and power of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
Specifically, after the emission weight of each gear in the N gears is obtained, the emission amount of gas in each gear per unit time is obtained, the emission amount of gas per unit time and the emission weight and power of each gear in the N gears are brought into an emission amount calculation formula, and the gas emission amount of the diesel locomotive can be calculated. The discharge amount of gas per unit time in each gear can be obtained through experiments. The gas comprises CO and NOx、CH。
The emission evaluation method of the diesel locomotive provided by the embodiment of the invention obtains the power of each gear of the diesel locomotive with N gears and the power of each gear of the diesel locomotive with standard 8 gears, respectively normalizes the power, combines the adjacent gears of the N gears to obtain all the combinations of the 8 gears, calculates the normalized power of various combinations of the 8 gears, obtains the optimal gear combination according to the normalized power of various combinations of the 8 gears 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 weight of each gear in the optimal gear combination and the normalized power of each gear in 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 emission of each gear in unit time of gas and the emission calculation formula, realizes the gas emission evaluation of the diesel locomotive with more than 8 gears, the accuracy of the gas emission evaluation of the diesel locomotive is improved.
Fig. 2 is a schematic flow chart of an emission amount evaluation method of an internal combustion locomotive according to a second embodiment of the present invention, and as shown in fig. 2, on the basis of the foregoing embodiments, further, the obtaining an optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of a standard 8-gear comprises:
s201, obtaining a normalized power mean value of each combination gear in each 8-gear combination according to the normalized power of the gear in each combination gear in each 8-gear combination; each combined gear is a single gear or a plurality of combined gears;
specifically, for a single gear in each 8-gear combination, the normalized power of the gear included in the single gear can be directly obtained as the average value of the normalized power of the single gear. And for multiple combination gears in each 8-gear combination, acquiring the normalized power of each gear in the multiple combination gears, and then calculating the average value of the normalized power of each gear in the multiple combination gears to be used as the average value of the normalized power of the multiple combination gears. The final normalized power average of the 8 combined gears included in each type of 8-gear combination can be obtained.
For example, for 8-gear combinations T1, T2, T3, T4, T5, T6, T7 and T8-12, for single-gear T1, T2, T3, T4, T5, T6 and T7, the normalized power of gears T1, T2, T3, T4, T5, T6 and T7 is directly obtained as the average value of the normalized power of single-gear T1, T2, T3, T4, T5, T6 and T7, there is a plurality of sets of engaged gears T8-12, and the normalized power p 'of five gears T8, T9, T10, T11 and T12 is obtained'8、p′9、p′10、p′11And p'12Then p 'is calculated'8、p′9、p′10、p′11And p'12Average value of (2)
Figure BDA0003473671450000061
Obtained by calculation
Figure BDA0003473671450000062
As the normalized power average of the plurality of combination gears T8-12.
S202, calculating and obtaining a global Euclidean distance between each class of gear combination and a standard 8 gear according to the normalized power mean value of each combination gear in each class of 8 gear combination and the normalized power of each gear in the standard 8 gear;
specifically, for each type of 8-gear combination, the global euclidean distance between each type of gear combination and the standard 8-gear can be calculated according to the normalized power average value of each combination gear in the 8-gear combination and the normalized power of each gear in the standard 8-gear.
For example, according to a formula
Figure BDA0003473671450000063
Calculating to obtain the global Euclidean distance D between the j-th 8-gear combination and the standard 8-gearj，piRepresents the normalized power of the ith gear in the standard 8 gear,
Figure BDA0003473671450000064
and the normalized power mean value of the ith combination gear in the jth 8-gear combination is represented, i is a positive integer and is less than or equal to 8.
And S203, acquiring the 8-gear combination with the minimum global Euclidean distance as the optimal gear combination.
Specifically, after obtaining the global euclidean distances between each class of gear combination and the standard 8-gear, comparing the global euclidean distances, and obtaining the minimum global euclidean distance, wherein the 8-gear combination corresponding to the minimum global euclidean distance can be used as the optimal gear combination.
Fig. 3 is a flowchart of an emission amount evaluation method for an internal combustion locomotive according to a third embodiment of the present invention, and as shown in fig. 3, further, on the basis of the foregoing embodiments, the obtaining an emission weight value of each gear in N gears according to the optimal gear combination and the emission weight values of the gears in standard 8 gears includes:
s301, corresponding each combination gear in the optimal gear combination to each gear in a standard 8 gear in a one-to-one mode according to a gear sequence; each combined gear is a single gear or a plurality of combined gears;
specifically, the optimal gear combination includes 8 combined gears, and among the 8 combined gears, there are a single gear and multiple combined gears, where the single gear has only one gear, and the multiple combined gears include two or more gears. And each combined gear in the optimal gear combination is in one-to-one correspondence 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 may be set according to the standard 8 gear from small to large, or according to the standard 8 gear from large to small, according to actual needs, and the embodiment of the present invention is not limited.
For example, the optimal gear combination comprises 8 sequentially arranged combination gears of Z1, Z2, Z3, Z4, Z5, Z6, Z7 and Z8, and the power of the gear corresponding to Z1 is smaller than that of the gear corresponding to Z8; standard 8 gears comprise 8 gears which are sequentially arranged, namely B1, B2, B3, B4, B5, B6, B7 and B8, and the power of the gear corresponding to B1 is smaller than that of the gear corresponding to B8. Z1 corresponds to B1, Z2 corresponds to B2, Z3 corresponds to B3, and so on until Z8 corresponds to B8.
S302, if a single gear in the optimal gear combination corresponds to a gear in a standard 8 gear, taking the emission weight of the gear in the standard 8 gear as the emission weight of the single gear in the optimal gear combination;
specifically, after the combined gear in the optimal gear combination is corresponding to the gear in the standard 8 gear, if the combined gear is a single gear, the emission weight of the gear in the standard 8 gear can be directly obtained as the emission weight of the corresponding single gear, and since the single gear only includes one gear, the emission weight of the single gear is the emission weight of the included gear. Wherein the emission weight for each of the standard 8 gears is known.
For example, if the optimal gear combination includes single gear Z1 that corresponds to gear B1 included in Standard 8 gear, then the emissions weight for gear B1 is obtained as the emissions weight for single gear Z1.
And S303, if multiple sets of gear positions in the optimal gear position combination correspond to gear positions in the standard 8 gear positions, calculating and obtaining the emission weight value of each gear position of the multiple sets of gear positions according to the normalized power of each gear position in the multiple sets of gear positions, the emission weight value of the corresponding gear position in the standard 8 gear position and an emission weight value distribution formula.
Specifically, after multiple sets of gear positions in the optimal gear position combination correspond to gear positions in standard 8 gear positions, if the combined gear positions are the multiple sets of gear positions, the normalized power of each gear position in the multiple sets of gear positions is obtained, the emission weight values of the gear positions in the standard 8 gear positions corresponding to the multiple sets of gear positions are brought into an emission weight value distribution formula, and the emission weight values of each gear position in the multiple sets of gear positions are obtained through calculation. Wherein the emission weight value distribution formula is preset.
It can be understood that after the emission weight value of each single gear in the optimal gear combination and the emission weight value of each gear in each combined gear are obtained, the emission weight value of each gear in the N gears is obtained.
On the basis of the foregoing embodiments, further, the emission weight value distribution formula is:
Figure BDA0003473671450000081
wherein, ω isαRepresenting emission weight p 'of alpha gear of multiple combined gears in the optimal gear combination'αNormalized power, u, representing the alpha gear of a plurality of combinations of gears in said optimal gear combinationiAnd representing the discharge weight of the ith gear of the standard 8 gears corresponding to the multiple sets of gears in the optimal gear combination, wherein alpha is a positive integer and is less than or equal to l, and l is the total number of gears included in the multiple sets of gears in the optimal gear combination.
Specifically, the normalized power of each gear of multiple gears in the optimal gear combination and the emission of the ith gear of the standard 8 gears corresponding to the multiple gears in the optimal gear combination are obtainedWeight uiThen brought into the formula
Figure BDA0003473671450000082
In the method, a discharge weight value of each gear of a plurality of combination gears in the optimal gear combination can be calculated and obtained. Wherein the plurality of sets of engaged gears correspond to the ith gear of the standard 8 gears.
The normalized power of each gear in the optimal gear combination is expressed as follows:
{p′1}、{p′2、…、p′1+k}、{p′2+k、…、p′1+k+l}、…{p′n-m+1、…、p′n}
wherein k is more than or equal to 1, l is more than or equal to 1, m is more than or equal to 1, the 3 rd combination gear of the optimal gear combination comprises l gears, and the emission weight of the l gears meets the following formula:
Figure BDA0003473671450000083
the 3 rd combined gear of the optimal gear combination corresponds to the 3 rd gear of the standard 8 gears, and the test time of the 3 rd gear of the standard 8 gears of the diesel locomotive is t3And the power of the 3 rd gear is p3On the principle of generating the same energy, the working time of l gears in the 3 rd combined gear of the optimal gear combination is respectively as follows:
Figure BDA0003473671450000084
combining the working time ratio condition of l gears in the 3 rd combined gear of the optimal gear combination, the emission weight distribution of each gear in the 3 rd combined gear is as follows:
Figure BDA0003473671450000091
wherein u is3The emission weight for standard gear 3 of 8. Based on the above reasoning process, canThe distribution formula of the obtained emission weight value is as follows:
Figure BDA0003473671450000092
on the basis of the above embodiments, further, the emission amount calculation formula is:
Figure BDA0003473671450000093
wherein M represents the gas emission amount per unit electric quantity of the diesel locomotive, and MxIndicating the amount of gas discharged in the x-th gear per unit time, ωxRepresents the emission weight, P, of the x-th gear of the N gearsxRepresents the power of the x-th gear in the N gears, wherein x is a positive integer and is less than or equal to N.
Specifically, the discharge amount m of gas per gear per unit timexCan be obtained by experiment in advance, and the gas can be CO or NOxAnd CH gas. The discharge amount of gas in the x gear in unit time, the discharge weight of each gear in the N gears and the power of each gear in the N gears are brought into a formula
Figure BDA0003473671450000094
In the method, the gas emission M of the unit electric quantity of the diesel locomotive can be calculated.
For example, N is equal to 12, and the power of 12 gears is P1、P2、P3……P12And the emission weights of 12 gears are respectively omega1、ω2、ω3……ω12The emission amount of CO in unit time of 12 gears is m1、m2、m3……m12A 1 is to P1、P2、P3……P12，ω1、ω2、ω3……ω12And m is1、m2、m3……m12Into formulas
Figure BDA0003473671450000095
In the method, the CO emission M of the unit electric quantity of the diesel locomotive can be calculatedco。
Fig. 4 is a schematic structural diagram of an emission amount estimation device of an internal combustion locomotive according to a fourth embodiment of the present invention, and as shown in fig. 4, the emission amount estimation device of an internal combustion locomotive according to the embodiment of the present invention includes an obtaining unit 401, a first obtaining unit 402, a second obtaining unit 403, a third obtaining unit 404, and a fourth obtaining unit 405, where:
the obtaining unit 401 is configured to obtain power of each gear of the N-gear internal combustion locomotive and power of each gear of the standard 8-gear internal combustion locomotive, normalize the powers respectively, and calculate normalized power of various 8-gear combinations; wherein N is a positive integer greater than or equal to 9; the first obtaining unit 402 is configured to combine adjacent gears of the N gears to obtain all 8-gear combinations; the second obtaining unit 403 is configured to obtain an optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of the standard 8-gear combination; the third obtaining unit 404 is configured to obtain, according to the optimal gear combination and the emission weight of each gear in the standard 8-gear, an emission weight of each gear in the N gears of the optimal gear combination; the fourth obtaining unit 405 is configured to obtain the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of the gas in each gear per unit time, and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
Specifically, the obtaining unit 401 obtains the power of each gear of the diesel engine of the internal combustion engine with N gears, and then normalizes the power of each gear by dividing the power of each gear by the maximum value of the powers of the N gears, so as to obtain the normalized power values of the N gears. The power of each gear of a diesel engine of a standard 8-gear diesel locomotive is obtained, 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, and power normalized values of 8 gears can be obtained. Wherein N is a positive integer greater than or equal to 9.
For the N range, the first obtaining unit 402 combines some adjacent ranges in the N range, reduces the N range to 8 combined ranges, and can obtain an 8-range combination. Of the 8 combined gear positions, each of which includes at least one gear position, a combined gear position including only one gear position in the embodiment of the present invention is referred to as a single gear position, and a combined gear position including a plurality of gear positions becomes a plurality of combined gear positions. The above-described process is repeated, and the first obtaining unit 402 obtains all the 8-gear combinations. For each 8-gear combination, the normalized power mean value of each combination gear in each 8-gear combination can be calculated and obtained according to the normalized power of the gear in each combination gear in each 8-gear combination and is used as the normalized power of each combination gear, so that the normalized power of each 8-gear combination is obtained.
The second obtaining unit 403 screens out a class of 8-gear combinations from various 8-gear combinations as an optimal gear combination according to the normalized power of the various 8-gear combinations and the normalized power of the standard 8-gear combination.
The emission weight values of the respective gears of the standard 8 gear are known, and the third obtaining unit 404 corresponds the respective gears in the optimal gear combination to the standard 8 gear, and may obtain the emission weight value of each gear in the N gears of the optimal gear combination.
After obtaining the emission weight of each gear in the N gears, the fourth obtaining unit 405 obtains the emission amount of gas in each gear per unit time, and brings the emission amount of gas per unit time and the emission weight and power of each gear in the N gears into an emission amount calculation formula, so as to calculate and obtain the gas emission amount of the diesel locomotive. The discharge amount of gas per unit time in each gear can be obtained through experiments. The gas comprises CO and NOx、CH。
The emission evaluation device of the diesel locomotive provided by the embodiment of the invention obtains the power of each gear of the diesel locomotive with N gears and the power of each gear of the diesel locomotive with standard 8 gears, respectively normalizes the power, combines the adjacent gears of the N gears to obtain all the combinations of the 8 gears, calculates the normalized power of various combinations of the 8 gears, obtains the optimal gear combination according to the normalized power of various combinations of the 8 gears 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 weight of each gear in the optimal gear combination and the normalized power of each gear in 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 emission of each gear in unit time of gas and an emission calculation formula, realizes the gas emission evaluation of the diesel locomotive with more than 8 gears, the accuracy of the gas emission evaluation of the diesel locomotive is improved.
Fig. 5 is a schematic structural diagram of an emission amount evaluation device of a diesel locomotive according to a fifth embodiment of the present invention, and as shown in fig. 5, on the basis of the foregoing embodiments, further, the second obtaining unit 402 includes an obtaining subunit 4021, a calculating subunit 4022, and an obtaining subunit 4023, where:
the obtaining subunit 4021 is configured to obtain a normalized power average value of each combination gear in each type of 8-gear combination according to the normalized power of the gear in each combination gear in each type of 8-gear combination; each combined gear is a single gear or a plurality of combined gears; the calculation subunit 4022 is configured to calculate a global euclidean distance between each class of gear combinations and the standard 8 gears according to the normalized power mean value of each combination gear in each class of 8-gear combinations and the normalized power of each gear in the standard 8 gears; the obtaining subunit 4023 is configured to obtain an 8-gear combination with a minimum global euclidean distance as an optimal gear combination.
Fig. 6 is a schematic structural diagram of an emission amount evaluation device of a diesel locomotive according to a sixth embodiment of the present invention, and as shown in fig. 6, on the basis of the above embodiments, further, the third obtaining unit 404 includes a corresponding sub-unit 4041, a first judging sub-unit 4042, and a second judging sub-unit 4043, where:
the corresponding sub-unit 4041 is configured to correspond each combination gear in the optimal gear combination to each gear in the standard 8 gears one by one according to a gear sequence; each combined gear is a single gear or a plurality of combined gears; each combined gear is a single gear or a plurality of combined gears; the first determining subunit 4042 is configured to, if a single gear in the optimal gear combination corresponds to a gear in a standard 8 gear, use the emission weight of the gear in the standard 8 gear as the emission weight of the single gear in the optimal gear combination; the second determining subunit 4043 is configured to, if multiple shift positions in the optimal shift position combination correspond to shift positions in standard 8 shift positions, calculate an emission weight value of each shift position in the multiple shift positions according to the normalized power of each shift position in the multiple shift positions, an emission weight value of a shift position in the corresponding standard 8 shift position, and an emission weight value distribution formula; wherein the emission weight value distribution formula is preset.
On the basis of the foregoing embodiments, further, the emission weight value distribution formula is:
Figure BDA0003473671450000121
wherein, ω isαRepresenting emission weight p 'of alpha gear of multiple combined gears in the optimal gear combination'αNormalized power, u, representing the alpha gear of a plurality of combinations of gears in said optimal gear combinationiAnd representing the discharge weight of the ith gear of the standard 8 gears corresponding to the multiple sets of gears in the optimal gear combination, wherein alpha is a positive integer and is less than or equal to l, and l is the total number of gears included in the multiple sets of gears in the optimal gear combination.
On the basis of the above embodiments, further, the emission amount calculation formula is:
Figure BDA0003473671450000122
wherein M represents the gas emission amount per unit electric quantity of the diesel locomotive, and MxDenotes the amount of gas discharged in the x-th gear per unit time, ωxRepresents the discharge weight, P, of the x-th gear of the N gearsxRepresents the power of the x-th gear in the N gears, wherein x is a positive integer and is less than or equal to N.
The embodiment of the apparatus provided in the embodiment of the present invention may be specifically configured to execute the processing flows of the above method embodiments, and the functions of the apparatus are not described herein again, and refer to the detailed description of the above method embodiments.
Fig. 7 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 7, 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 complete communication with each other through the communication bus 704. The processor 701 may call logic instructions in the memory 703 to perform the following method: acquiring the power of each gear of the N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and respectively normalizing; wherein N is a positive integer greater than or equal to 9; combining N gears with adjacent gears to obtain all 8-gear combinations; obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear; obtaining the emission weight of each gear in the N gears according to the optimal gear combination and the emission weight of each gear in the standard 8 gears; obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
In addition, the logic instructions in the memory 703 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method provided by the above-mentioned method embodiments, for example, comprising: acquiring the power of each gear of the N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and respectively normalizing; wherein N is a positive integer greater than or equal to 9; combining N gears with adjacent gears to obtain all 8-gear combinations; obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear; obtaining the emission weight of each gear in the N gears according to the optimal gear combination and the emission weight of each gear in the standard 8 gears; obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
The present embodiment provides a computer-readable storage medium, which stores a computer program, where the computer program causes the computer to execute the method provided by the above method embodiments, for example, the method includes: acquiring the power of each gear of the N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and respectively normalizing; wherein N is a positive integer greater than or equal to 9; combining N gears with adjacent gears to obtain all 8-gear combinations; obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear; obtaining the emission weight of each gear in the N gears according to the optimal gear combination and the emission weight of each gear in the standard 8 gears; obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In the description herein, reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (12)

1. An emission amount evaluation method for an internal combustion locomotive, characterized by comprising:
acquiring the power of each gear of the N-gear diesel locomotive and the power of each gear of a standard 8-gear diesel locomotive, and respectively normalizing; wherein N is a positive integer greater than or equal to 9;
combining N gears with adjacent gears to obtain all 8 gear combinations, and calculating to obtain the normalized power of each 8 gear combination;
obtaining an optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of a standard 8-gear;
obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the optimal gear combination and the emission weight of each gear of the standard 8 gears;
obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
2. The method of claim 1, wherein obtaining the optimal gear combination according to the normalized power of each type of 8-gear combination and the normalized power of a standard 8-gear comprises:
obtaining a normalized power mean value of each combination gear in each 8-gear combination according to the normalized power of the gear in each combination gear in each 8-gear combination; each combined gear is a single gear or a plurality of combined gears;
calculating to obtain a global Euclidean distance between each class of gear combination and a standard 8 gear according to the normalized power mean value of each combination gear in each class of 8 gear combination and the normalized power of each gear in the standard 8 gear;
and acquiring the 8-gear combination with the minimum global Euclidean distance as the optimal gear combination.
3. The method according to claim 1, wherein the obtaining the emission weight value of each gear in N gears of the optimal gear combination according to the optimal gear combination and the emission weight value of a standard 8 gear comprises:
each combination gear in the optimal gear combination is in one-to-one correspondence with each gear in the standard 8 gears according to the gear sequence; each combined gear is a single gear or a plurality of combined gears;
if the single gear in the optimal gear combination corresponds to the gear in the standard 8 gear, taking the emission weight of the gear in the standard 8 gear as the emission weight of the single gear in the optimal gear combination;
if multiple combination gears in the optimal gear combination correspond to gears in a standard 8 gear, calculating to obtain an emission weight of each gear of the multiple combination gears according to the normalized power of each gear of the multiple combination gears, the emission weight of the corresponding gear in the standard 8 gear and an emission weight distribution formula; wherein the emission weight value distribution formula is preset.
4. The method of claim 3, wherein the emission weight assignment formula is:
Figure FDA0003473671440000021
wherein, ω isαRepresenting emission weight p 'of alpha gear of multiple combined gears in the optimal gear combination'αNormalized power, u, representing the alpha gear of a plurality of combinations of gears in said optimal gear combinationiAnd representing the discharge weight of the ith gear of the standard 8 gears corresponding to the multiple sets of gears in the optimal gear combination, wherein alpha is a positive integer and is less than or equal to l, and l is the total number of gears included in the multiple sets of gears in the optimal gear combination.
5. The method according to any one of claims 1 to 4, wherein the emission amount calculation formula is:
Figure FDA0003473671440000022
wherein M represents the gas emission amount per unit electric quantity of the diesel locomotive, and MxIndicating the amount of gas discharged in the x-th gear per unit time, ωxRepresents the discharge weight, P, of the x-th gear of the N gearsxRepresents the power of the x-th gear in the N gears, wherein x is a positive integer and is less than or equal to N.
6. An emission amount evaluation device of an internal combustion locomotive, characterized by comprising:
the acquiring unit is used for acquiring 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 respectively carrying out normalization; wherein N is a positive integer greater than or equal to 9;
the first obtaining unit is used for combining the N gears with adjacent gears to obtain all 8 gear combinations and calculating to obtain the normalized power of each 8 gear combination;
the second obtaining unit is used for obtaining the optimal gear combination according to the normalized power of various 8-gear combinations and the normalized power of the standard 8-gear;
the third obtaining unit is used for obtaining the emission weight of each gear in the N gears of the optimal gear combination according to the optimal gear combination and the emission weight of each gear of the standard 8 gears;
the fourth obtaining unit is used for obtaining the gas emission amount of the diesel locomotive according to the emission weight of each gear in the N gears, the emission amount of gas in each gear in unit time and an emission amount calculation formula; wherein the emission amount calculation formula is preset.
7. The apparatus of claim 6, wherein the second obtaining unit comprises:
the obtaining subunit is used for obtaining a normalized power mean value of each combination gear in each 8-gear combination according to the normalized power of the gear in each combination gear in each 8-gear combination; each combined gear is a single gear or a plurality of combined gears;
the calculating subunit is used for calculating and obtaining the global Euclidean distance between each class of gear combination and the standard 8 gear according to the normalized power mean value of each combination gear in each class of 8 gear combination and the normalized power of each gear in the standard 8 gear;
and the acquisition subunit is used for acquiring the 8-gear combination with the minimum global Euclidean distance as the optimal gear combination.
8. The apparatus of claim 6, wherein the third obtaining unit comprises:
the corresponding subunit is used for carrying out one-to-one correspondence on each combination gear in the optimal gear combination and each gear in the standard 8 gears according to the gear sequence; each combined gear is a single gear or a plurality of combined gears;
the first judgment subunit is configured to, if a single gear in the optimal gear combination corresponds to a gear in a standard 8 gear, take the emission weight of the gear in the standard 8 gear as the emission weight of the single gear in the optimal gear combination;
the second judgment subunit is configured to, if multiple sets of shift positions in the optimal shift position combination correspond to shift positions in standard 8 shift positions, calculate an emission weight value of each shift position of the multiple sets of shift positions according to the normalized power of each shift position in the multiple sets of shift positions, an emission weight value of a shift position in the corresponding standard 8 shift position, and an emission weight value distribution formula; wherein the emission weight distribution formula is preset.
9. The apparatus of claim 8, wherein the emission weight assignment formula is:
Figure FDA0003473671440000031
wherein, ω isαRepresenting emission weight p 'of alpha gear of multiple combined gears in the optimal gear combination'αNormalized power, u, representing the alpha gear of a plurality of combinations of gears in said optimal gear combinationiAnd representing the discharge weight of the ith gear of the standard 8 gears corresponding to the multiple sets of gears in the optimal gear combination, wherein alpha is a positive integer and is less than or equal to l, and l is the total number of gears included in the multiple sets of gears in the optimal gear combination.
10. The apparatus according to any one of claims 6 to 9, wherein the discharge amount calculation formula is:
Figure FDA0003473671440000032
wherein M represents the gas emission amount per unit electric quantity of the diesel locomotive, and MxIndicating the amount of gas discharged in the x-th gear per unit time, ωxRepresents the discharge weight, P, of the x-th gear of the N gearsxRepresents the power of the x-th gear in the N gears, wherein x is a positive integer and is less than or equal to N.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 5 are implemented when the computer program is executed by the processor.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
CN202210050585.2A 2022-01-17 2022-01-17 Method and device for estimating discharge capacity of diesel locomotive Pending CN114493211A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117074046A (en) * 2023-10-12 2023-11-17 中汽研汽车检验中心(昆明)有限公司 Automobile laboratory emission test method and device in plateau environment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117074046A (en) * 2023-10-12 2023-11-17 中汽研汽车检验中心(昆明)有限公司 Automobile laboratory emission test method and device in plateau environment
CN117074046B (en) * 2023-10-12 2024-01-02 中汽研汽车检验中心(昆明)有限公司 Automobile laboratory emission test method and device in plateau environment

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