CN112083660A - Diesel engine DPF carbon loading amount model simulation control method - Google Patents
Diesel engine DPF carbon loading amount model simulation control method Download PDFInfo
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- CN112083660A CN112083660A CN202010153841.1A CN202010153841A CN112083660A CN 112083660 A CN112083660 A CN 112083660A CN 202010153841 A CN202010153841 A CN 202010153841A CN 112083660 A CN112083660 A CN 112083660A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 69
- 238000004088 simulation Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000009825 accumulation Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 230000008929 regeneration Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000012795 verification Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012216 screening Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000013079 data visualisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses a diesel engine DPF carbon loading amount model simulation control method, which is characterized by comprising the following steps: the simulation control method of the diesel engine DPF carbon loading amount model comprises the steps of respectively carrying out one round of carbon accumulation tests on various working conditions on a whole vehicle, recording input quantities of carbon loading amounts of the EMS calculation model participating in the carbon accumulation process by using a recorder, and then integrating and calculating parameters of the model carbon loading amount in an off-line manner. Compared with the prior art, the method has the advantages that: according to the calculation method of the simulation DPF carbon loading capacity model based on Simulink, provided by the invention, only the data of the carbon accumulation process of the vehicle under each working condition under each environment are recorded, and under the Simulink environment, repeated verification is not required to be carried out on an actual vehicle, and only the relevant parameters of an EMS system are integrated in an off-line manner, so that the deviation of the simulated carbon loading capacity model and the actual value meets the requirement, the verification times of a real test can be reduced to a great extent, the cost is saved, and the efficiency is improved.
Description
Technical Field
The invention relates to the technical field of simulation control methods, in particular to a diesel engine DPF carbon loading amount model simulation control method.
Background
In the prior art, under the working conditions (urban area, suburban area and high speed) of certain mileage under various environments (normal temperature plain, high temperature plain, plateau and low temperature plain) of a vehicle, the real carbon carrying amount accumulated in the DPF is weighed and then compared with the carbon carrying amount obtained by an EMS system; and if the actual value has deviation with the value obtained by the EMS, integrating the parameters of the EMS system participating in the carbon carrying amount calculation, and then performing real vehicle verification, and repeating the steps for N times until the deviation between the actual carbon carrying amount and the carbon carrying amount calculated by the EMS system is within the range. The prior art has the following defects: after the parameters of the EMS system are integrated each time, verification of each working condition needs to be carried out on the vehicle, and a large amount of time and money cost are consumed.
MATLAB is a commercial mathematical software produced by MathWorks company in America, is used for high-level technical computing language and interactive environment of algorithm development, data visualization, data analysis and numerical calculation, and mainly comprises two parts, namely MATLAB and Simulink.
Disclosure of Invention
The invention aims to solve the technical problems and provides a calculation method based on a Simulink simulation DPF carbon loading capacity model from the practical application, in the Simulink environment, repeated verification is not needed on a real vehicle, EMS system parameters can be integrated off line, the model carbon loading capacity calculated by an EMS system is simulated, simulation is performed in a pure software environment, the operation is simple, and a large amount of time and money cost can be saved.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a diesel engine DPF carbon loading amount model simulation control method is characterized by comprising the following steps: the simulation control method of the diesel engine DPF carbon loading amount model comprises the steps of respectively carrying out one round of carbon accumulation tests on various working conditions on a whole vehicle, recording input quantities of carbon loading amounts of the EMS calculation model participating in the carbon accumulation process by using a recorder, and then integrating and calculating parameters of the model carbon loading amount in an off-line manner.
Further, the diesel engine DPF carbon loading amount model simulation control method is a diesel engine DPF carbon loading amount model simulation control method based on Simulink, and specifically comprises the following steps:
and 6, finally outputting parameters of the EMS system for calculating the carbon carrying quantity of the model, and writing the parameters into the system.
Compared with the prior art, the invention has the advantages that: according to the calculation method of the simulation DPF carbon loading capacity model based on Simulink, provided by the invention, only the data of the carbon accumulation process of the vehicle under each working condition under each environment are recorded, and under the Simulink environment, repeated verification is not required to be carried out on an actual vehicle, and only the relevant parameters of an EMS system are integrated in an off-line manner, so that the deviation of the simulated carbon loading capacity model and the actual value meets the requirement, the verification times of a real test can be reduced to a great extent, the cost is saved, and the efficiency is improved.
Drawings
Fig. 1 is a schematic of the carbon loading simulated by simulink of the present invention.
Fig. 2 is a schematic diagram of vehicle data recorded by the matlab batch reading recorder of the invention.
FIG. 3 is a schematic diagram of the present invention screening vehicle data for data requiring input of simulink in a form.
FIG. 4 is a diagram illustrating reading a DCM file according to the present invention.
FIG. 5 is a diagram illustrating reading a DCM file according to the present invention.
FIG. 6 is a schematic diagram of the Simulink overall simulation logic of the present invention.
FIG. 7 is a schematic diagram of the acquisition time signal and the simulated stop time of the present invention.
Fig. 8 is a schematic view of the mass flow rate of carbon particles of the present invention.
FIG. 9 is a graphical representation of simulated carbon loading for an engine of the present invention in a normal operating mode.
FIG. 10 is a graphical representation of simulated carbon loading for an engine of the present invention in a rapid warm up operating mode.
FIG. 11 is a schematic representation of simulated carbon loading for an engine of the present invention in a regeneration condition.
FIG. 12 is a schematic representation of a simulated carbon loading for an engine of the present invention in a regeneration condition.
FIG. 13 is a schematic of the integrated accumulated value of the simulated carbon loading of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and drawings.
A simulation control method for a diesel engine DPF carbon loading amount model is characterized in that a round of carbon accumulation tests are respectively carried out on a whole vehicle under various working conditions, input amounts of carbon loading amount participating in an EMS calculation model in the carbon accumulation process are recorded by a recorder, and then parameters of the carbon loading amount of the calculation model are integrated offline.
Further, the diesel engine DPF carbon loading amount model simulation control method is a diesel engine DPF carbon loading amount model simulation control method based on Simulink, and specifically comprises the following steps:
firstly, building a simulink simulation model, and building a control logic through the simulink, as shown in fig. 1;
secondly, vehicle running data in the recorder is obtained, and the dat files recorded in the recorder are read in batches through matlab to obtain vehicle running data, as shown in fig. 2;
thirdly, screening out data required by simulink simulation as input of the simulink simulation, and screening out variables required by the simulink from a structure array reading dat;
fourthly, reading parameters required by the carbon-carrying quantity model simulation, and reading parameter DCM files required by the carbon-carrying quantity model simulation through matlab, as shown in FIG. 4;
fifthly, simulating and outputting a simulation result, integrating EMS parameters according to the simulated carbon-carrying quantity model value and the actual carbon-carrying quantity value, and then simulating, repeating the steps until the deviation between the model carbon-carrying quantity and the actual value is within the required range, as shown in figure 5;
and sixthly, outputting the final parameters of the EMS system for calculating the carbon carrying quantity of the model, and writing the final parameters into the system.
Further, the total simulation logic of Simulink is as shown in fig. 6. The total simulation logic comprises the steps of obtaining a time signal and simulation stop time as shown in figure 7, inputting a simulink simulation input signal as shown in figure 8, mass flow of carbon particles as shown in figure 9, simulation carbon carrying amount of an engine in a normal running mode as shown in figure 10, simulation carbon carrying amount of the engine in a rapid heating running mode as shown in figure 11, simulation carbon carrying amount of the engine in a regeneration state as shown in figure 12, and an integral accumulated value of the simulation carbon carrying amount as shown in figure 13.
The invention and its embodiments have been described above, without this being limitative. Without departing from the spirit of the invention, a person skilled in the art shall appreciate that embodiments similar to the above-described embodiments may be devised without inventing, and the invention shall fall within the scope of the claims.
Claims (3)
1. A diesel engine DPF carbon loading amount model simulation control method is characterized by comprising the following steps: the simulation control method of the diesel engine DPF carbon loading amount model comprises the steps of respectively carrying out one round of carbon accumulation tests on various working conditions on a whole vehicle, recording input quantities of carbon loading amounts of the EMS calculation model participating in the carbon accumulation process by using a recorder, and then integrating and calculating parameters of the model carbon loading amount in an off-line manner.
2. The diesel engine DPF carbon loading amount model simulation control method as claimed in claim 1, wherein: the simulation control method of the diesel engine DPF carbon loading model is based on Simulink and comprises the following specific steps:
step 1, writing a DAT file recorded by a code reading recorder, and enabling the DAT file to interact with a Simulink model;
step 2, building a carbon quantity simulation model in Simulink, and compiling codes to call relevant data in the DAT as input;
step 3, compiling codes to call parameters for simulating the carbon-carrying quantity model;
step 4, performing Simulink simulation, and outputting the carbon carrying capacity of the model;
step 5, integrating parameters according to the deviation of the model carbon-carrying quantity and the true value, and then performing simulation, and repeating the operation until the deviation of the model carbon-carrying quantity and the true value is within the required range;
and 6, finally outputting parameters of the EMS system for calculating the carbon carrying quantity of the model, and writing the parameters into the system.
3. The diesel engine DPF carbon loading amount model simulation control method as claimed in claim 1, wherein: the model carbon carrying amount output in the step 4 is the simulated carbon carrying amount of the engine in the normal operation mode, the simulated carbon carrying amount of the engine in the rapid heating operation mode and the simulated carbon carrying amount of the engine in the regeneration state respectively.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113806953A (en) * | 2021-09-24 | 2021-12-17 | 一汽解放汽车有限公司 | Construction method of DPF carbon loading capacity model |
| CN114179739A (en) * | 2021-12-24 | 2022-03-15 | 无锡伟博汽车科技有限公司 | Algorithm system for evaluating quality of diesel oil product added to truck |
Citations (3)
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| EP2869144A1 (en) * | 2013-11-05 | 2015-05-06 | Jinan Railway Vehicles Equipment Co., Ltd. | Simulation testing platform for wind power plant and testing method thereof |
| CN108647430A (en) * | 2018-05-09 | 2018-10-12 | 中国重汽集团济南动力有限公司 | A kind of DPF carbon load computational methods |
| CN110794708A (en) * | 2019-10-23 | 2020-02-14 | 南京理工大学 | Spray rod system testing method based on VeriStation and Simulink combined simulation |
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2020
- 2020-03-07 CN CN202010153841.1A patent/CN112083660A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2869144A1 (en) * | 2013-11-05 | 2015-05-06 | Jinan Railway Vehicles Equipment Co., Ltd. | Simulation testing platform for wind power plant and testing method thereof |
| CN108647430A (en) * | 2018-05-09 | 2018-10-12 | 中国重汽集团济南动力有限公司 | A kind of DPF carbon load computational methods |
| CN110794708A (en) * | 2019-10-23 | 2020-02-14 | 南京理工大学 | Spray rod system testing method based on VeriStation and Simulink combined simulation |
Non-Patent Citations (2)
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| 余宏峰;殷勇;杨尚丽;: "缸内喷雾燃烧CFD仿真模型校验", 汽车科技, no. 06, 25 November 2012 (2012-11-25) * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113806953A (en) * | 2021-09-24 | 2021-12-17 | 一汽解放汽车有限公司 | Construction method of DPF carbon loading capacity model |
| CN113806953B (en) * | 2021-09-24 | 2023-11-21 | 一汽解放汽车有限公司 | Construction method of DPF carbon loading model |
| CN114179739A (en) * | 2021-12-24 | 2022-03-15 | 无锡伟博汽车科技有限公司 | Algorithm system for evaluating quality of diesel oil product added to truck |
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