CN108223176A - Based on the environmental parameter of electronic controlled diesel to the correction-compensation method of injection advance angle - Google Patents
Based on the environmental parameter of electronic controlled diesel to the correction-compensation method of injection advance angle Download PDFInfo
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- CN108223176A CN108223176A CN201711298390.5A CN201711298390A CN108223176A CN 108223176 A CN108223176 A CN 108223176A CN 201711298390 A CN201711298390 A CN 201711298390A CN 108223176 A CN108223176 A CN 108223176A
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- 238000002347 injection Methods 0.000 title claims abstract description 39
- 239000007924 injection Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007613 environmental effect Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000012937 correction Methods 0.000 claims description 70
- 239000000446 fuel Substances 0.000 claims description 54
- 102100032460 Ensconsin Human genes 0.000 claims description 5
- 101001016782 Homo sapiens Ensconsin Proteins 0.000 claims description 5
- 101000979001 Homo sapiens Methionine aminopeptidase 2 Proteins 0.000 claims description 5
- 101000969087 Homo sapiens Microtubule-associated protein 2 Proteins 0.000 claims description 5
- 101000616432 Homo sapiens Microtubule-associated protein 6 Proteins 0.000 claims description 5
- 101000969594 Homo sapiens Modulator of apoptosis 1 Proteins 0.000 claims description 5
- 102100021118 Microtubule-associated protein 2 Human genes 0.000 claims description 5
- 102100021791 Microtubule-associated protein 6 Human genes 0.000 claims description 5
- 102100021440 Modulator of apoptosis 1 Human genes 0.000 claims description 5
- 101100131116 Oryza sativa subsp. japonica MPK3 gene Proteins 0.000 claims description 5
- 101100456045 Schizosaccharomyces pombe (strain 972 / ATCC 24843) map3 gene Proteins 0.000 claims description 5
- HONKEGXLWUDTCF-YFKPBYRVSA-N (2s)-2-amino-2-methyl-4-phosphonobutanoic acid Chemical compound OC(=O)[C@](N)(C)CCP(O)(O)=O HONKEGXLWUDTCF-YFKPBYRVSA-N 0.000 claims description 4
- 101000616438 Homo sapiens Microtubule-associated protein 4 Proteins 0.000 claims description 4
- 108090001040 Microtubule-associated protein 1B Proteins 0.000 claims description 4
- 102000004866 Microtubule-associated protein 1B Human genes 0.000 claims description 4
- 102100021794 Microtubule-associated protein 4 Human genes 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 238000004364 calculation method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0606—Fuel temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
- F02D2200/703—Atmospheric pressure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention provides it is a kind of based on the environmental parameter of electronic controlled diesel to the correction-compensation method of injection advance angle, utilize abundant soft of Modem electronic control diesel machine control unit, hardware resource, pass through original electric-control system gathered data such as water temperature, into temperature, the environmental parameters such as fuel oil temperature and atmospheric pressure, basic advance angle is sprayed fuel oil to carry out succinctly, effective corrected Calculation, Automatic Optimal adjusts advance angle control parameter, diesel engine is enable to automatically adjust fuel oil injection opportunity according to the variation of environment, diesel engine power performance in the case where environmental change is larger is made to remain able to meet application demand as far as possible.
Description
Technical Field
The invention belongs to the technical field of electronic control of diesel engines, and particularly relates to a correction compensation method for an oil injection advance angle based on environmental parameters of an electronic control diesel engine.
Background
Among various control parameters of the electric control diesel engine, the injection advance angle of the diesel engine greatly affects the oil-gas mixing and combustion quality of the diesel engine, and is directly related to the dynamic property, the economical efficiency and the emission quality of the diesel engine. The modern electric control diesel engine is a high-performance power machine integrating computer technology, modern sensor technology and advanced control technology, and can realize independent and flexible adjustment of the fuel injection advance angle, thereby improving the power performance of the diesel engine and the like. It is a common method to optimize the performance and emissions of diesel engines by adjusting the advance angle of injection.
However, with the stricter requirements on the emission, performance, reliability, service life and the like of the diesel engine and the more and more extensive application environments, the traditional control mode of calibrating the advance angle of the diesel engine based on the oil quantity and the rotating speed of the rack cannot meet the refined control requirement of the current high-performance diesel engine, and the diesel engine electric control system needs to comprehensively correct and compensate the fuel injection advance angle according to the changes of different application environment conditions such as different environmental temperatures, different air inlet temperatures, different fuel temperatures, different altitudes and the like, so that the diesel engine can always automatically obtain the optimal fuel injection advance angle control parameters, the good combustion working process of the diesel engine is kept, and the quality factors such as the output performance, the service life, the reliability and the like of.
Disclosure of Invention
In view of the above, the present invention aims to provide a correction compensation method for an advance angle of fuel injection based on environmental parameters of an electronically controlled diesel engine, so as to automatically optimize and adjust the advance angle control parameters, so that the diesel engine can automatically adjust the timing of fuel injection according to environmental changes, and the power performance of the diesel engine can still meet application requirements under the condition of large environmental changes as much as possible.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention has the conception that: a fuel injection advance angle correction compensation function and a corresponding control parameter MAP are designed in the existing engine control software to realize the advance angle environment correction function.
Specifically, in the correction compensation method of the injection advance angle based on the environmental parameters of the electronic control diesel engine, in the calculation process of the injection timing, the influence of environmental factors on the timing is considered, such as the cold and hot states of an engine, the fuel temperature, the altitude and the like, the injection advance angle is divided into two parts, one part is the basic value of the advance angle, and the basic value is determined by the engine speed, the oil quantity and the engine temperature (the engine temperature state refers to the water temperature and the air inlet temperature). The other part is the correction value of the advance angle, which is determined by the rotation speed, the oil quantity, the atmospheric pressure and the fuel temperature.
The method for calculating the fuel injection advance angle comprises the following steps that a basic value is the advance angle value of each working condition in the normal-temperature environment, and the basic advance angle correction is determined by multiplying the difference value of the advance angles in the cold state and the normal-temperature environment by a cold-state correction coefficient of an engine. The other part of the environment correction amounts are respectively determined by multiplying the advance angle correction amounts based on the atmospheric pressure and the fuel temperature by corresponding correction coefficients. The final advance angle value is determined by the basic advance angle, the basic correction amount and the environmental correction amount.
Compared with the prior art, the invention has the following advantages:
(1) the invention does not increase the software and hardware resources, and completes the modification of the diesel engine control software by increasing the advance angle compensation control function and 4 pieces of two-dimensional MAP and 3 pieces of one-dimensional MAP; the control algorithm has clear and concise logic, relatively independent calibration quantity, strong calibrability and easy improvement and application of a diesel engine control system;
(2) meanwhile, in the application process, the calibration of relevant modified MAP data can be respectively carried out according to the allocation condition of the existing diesel engine sensor, the improvement and the application are flexible and convenient, the cost is low, and the method is suitable for the optimization and the improvement of newly-researched or existing diesel engines.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a logic flow diagram of a correction compensation method according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention relates to a correction compensation method for an oil injection advance angle based on environmental parameters of an electric control diesel engine, which comprises the following steps as shown in figure 1:
inquiring cold state timing MAP1 according to the average rotating speed and the injected oil quantity, and obtaining a cold state advance angle according to the table 1;
inquiring normal-temperature basic timing MAP2 according to the average rotating speed and the injected oil quantity, and obtaining a normal-temperature basic advance angle according to the table 2;
inquiring a correction coefficient MAP3 based on the water temperature and the air inlet temperature according to the water temperature and the air inlet temperature, and obtaining a cold machine correction coefficient according to the table 3;
calculating the difference value between the cold state advance angle and the normal temperature basic advance angle, and multiplying the difference value by the cold machine correction coefficient to obtain the basic advance angle correction quantity;
inquiring an advance angle MAP4 based on atmospheric pressure according to the average rotating speed and the injected oil quantity, and obtaining an advance angle under the influence of the atmospheric pressure according to a table 4, inquiring an advance angle correction coefficient MAP5 based on the atmospheric pressure according to the atmospheric pressure, and obtaining an atmospheric correction coefficient according to a table 5; multiplying the advance angle under the influence of the atmospheric pressure by an atmospheric correction coefficient to obtain the correction of the atmospheric pressure to the advance angle;
inquiring an advance angle MAP6 based on the fuel temperature according to the average rotating speed and the injected fuel quantity, referring to table 6, obtaining an advance angle under the influence of the fuel temperature, inquiring an advance angle correction coefficient MAP7 based on the fuel temperature according to the fuel temperature, referring to table 7, and obtaining a fuel temperature correction coefficient; multiplying the advance angle under the influence of the fuel temperature by the fuel temperature correction coefficient to obtain the correction of the fuel temperature to the advance angle;
and adding the obtained normal-temperature basic advance angle, the correction quantity of the atmospheric pressure to the advance angle, the correction quantity of the fuel temperature to the advance angle and the correction quantity of the basic advance angle to obtain an injection advance angle control parameter.
If the relevant MAP data can be completely set to zero when part of the test conditions do not meet the requirements, namely, the correction function of the relevant parameters can be closed, namely, the final result of the injection advance angle control parameters is the addition result of any one or two or three of the normal-temperature basic advance angle and the 3 correction amounts (the correction amount of the atmospheric pressure to the advance angle, the correction amount of the fuel temperature to the advance angle and the correction amount of the basic advance angle).
In specific implementation, the fuel injection advance angle control method is realized by software design of a fuel injection advance angle correction compensation function, and the calling time of the compensation function is synchronous with the calculation of the advance angle in the original control software.
The metric of the correction result can be judged according to the actual attention index of the diesel engine, such as comprehensive judgment according to indexes of output power, exhaust temperature, detonation pressure, smoke intensity and the like.
Wherein,
TABLE 1 Cold State advance angle MAP1 (rpm r/min, oil quantity ml/cyc, advance plus CA)
TABLE 2 Normal temperature basic advance angle MAP2 (rotation speed r/min, oil amount ml/cyc, advance CA)
TABLE 3 correction factor based on Water temperature and intake air temperature MAP3 (Water temperature, Fuel temperature, correction factor unitless)
TABLE 4 advance angle based on barometric pressure MAP4 (rpm r/min, oil amount ml/cyc, advance CA °)
TABLE 5 advance correction coefficient MAP5 based on barometric pressure (barometric pressure kpa, coefficient unitless)
| Atmospheric pressure | 50 | 60 | 65 | ······ | 95 | 100 |
| Correction factor | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
TABLE 6 advance angle MAP6 (rpm r/min, oil amount ml/cyc, advance CA) based on fuel temperature
TABLE 7 advance angle correction coefficient MAP7 based on fuel temperature (fuel temperature, coefficient is unitless)
| Fuel oil temperature | 0 | 10 | 20 | ······ | 80 | 100 |
| Correction factor | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
The 4 two-dimensional MAP and 3 one-dimensional MAP data sets shown in tables 1 to 7 above are calibratable. Note that the coordinates and data given in tables 1 to 7 are only used for reference, and in practical application, the MAP coordinate step interval needs to be adjusted according to the maximum measurement range of specific diesel engine control parameters and the usage frequency of the diesel engine (for example, the interval of a relatively concerned rotating speed segment can be designed to be 100, an infrequently used rotating speed segment can be designed to be 300 to 500, and the interval design of temperature and pressure coordinates can be similarly adjusted), and meanwhile, the type of query variable can also be adjusted to meet the requirement of practical application.
And (5) carrying out MAP data calibration, and carrying out actual calibration work of the rack according to the initial data of tables 1 to 7 after pre-calibration is finished. Wherein:
the MAP1 cold state timing data can finish the calibration of the diesel engine full working condition advance angle on the basis of working when the environmental temperature is a certain low temperature condition, such as 0 ℃. Therefore, MAP1 stores injection advance angle data determined by the average rotation speed and the injection oil amount in a low-temperature environment.
MAP2 can select the original full-working-condition advance angle data at normal temperature, and MAP2 stores the injection advance angle data determined by the average rotating speed and the injection oil amount under the normal-temperature environment.
The calibration of the MAP3 needs to be completed according to the table 3 in the environment with adjustable water temperature and air inlet temperature, and the MAP3 stores the correction coefficients of the corresponding injection advance angles under different values of water temperature and air inlet temperature.
The advance angle data for MAP4 and MAP6 may be adjusted based on the table data, in combination with the gantry calibration requirements.
The MAP5 and the MAP7 need to be tested in a laboratory capable of simulating a plateau environment and a laboratory with adjustable fuel temperature respectively, the external environment conditions are changed one by one according to the preset MAP data coordinates, the correction coefficient is modified after the diesel engine works stably until the diesel engine recovers to the working state before the environmental conditions are changed, and the calibration of the MAP data is finished by analogy.
In addition, in the calibration process, because each calibration parameter in the control strategy method is relatively independent, if the requirements are not met due to partial test conditions, all relevant MAP data can be set to zero, namely, the correction function of the relevant parameters can be closed, and other parameters MAP can be continuously calibrated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The correction compensation method for the fuel injection advance angle based on the environmental parameters of the electric control diesel engine is characterized by comprising the following steps:
inquiring cold state timing MAP1 according to the average rotating speed and the injected oil quantity to obtain a cold state advance angle;
inquiring normal-temperature basic timing MAP2 according to the average rotating speed and the injected oil quantity to obtain a normal-temperature basic advance angle;
inquiring a correction coefficient MAP3 based on the water temperature and the air inlet temperature according to the water temperature and the air inlet temperature, and obtaining a cold machine correction coefficient according to the table 3;
calculating the difference value between the cold state advance angle and the normal temperature basic advance angle, and multiplying the difference value by the cold machine correction coefficient to obtain the basic advance angle correction quantity;
and adding the obtained normal-temperature basic advance angle and the basic advance angle correction to obtain a first injection advance angle control parameter.
2. The correction compensation method for the fuel injection advance angle based on the environmental parameters of the electrically controlled diesel engine as claimed in claim 1, wherein: inquiring an advance angle MAP4 based on atmospheric pressure according to the average rotating speed and the injection oil quantity to obtain an advance angle under the influence of the atmospheric pressure, and inquiring an advance angle correction coefficient MAP5 based on the atmospheric pressure according to the atmospheric pressure to obtain an atmospheric correction coefficient; multiplying the advance angle under the influence of the atmospheric pressure by an atmospheric correction coefficient to obtain the correction of the atmospheric pressure to the advance angle;
and adding the first injection advance angle control parameter and the correction of the advance angle by the atmospheric pressure to obtain a second injection advance angle control parameter.
3. The correction compensation method for the fuel injection advance angle based on the environmental parameters of the electrically controlled diesel engine as claimed in claim 1, wherein: inquiring an advance angle MAP6 based on the fuel temperature according to the average rotating speed and the injected fuel quantity, referring to table 6, obtaining an advance angle under the influence of the fuel temperature, inquiring an advance angle correction coefficient MAP7 based on the fuel temperature according to the fuel temperature, referring to table 7, and obtaining a fuel temperature correction coefficient; multiplying the advance angle under the influence of the fuel temperature by the fuel temperature correction coefficient to obtain the correction of the fuel temperature to the advance angle;
and adding the first injection advance angle control parameter and the correction quantity of the advance angle by the fuel temperature to obtain a third injection advance angle control parameter.
4. The method for correcting and compensating the fuel injection advance angle based on the environmental parameters of the electrically controlled diesel engine as claimed in claim 2, wherein: inquiring an advance angle MAP6 based on the fuel temperature according to the average rotating speed and the injected fuel quantity, referring to table 6, obtaining an advance angle under the influence of the fuel temperature, inquiring an advance angle correction coefficient MAP7 based on the fuel temperature according to the fuel temperature, referring to table 7, and obtaining a fuel temperature correction coefficient; multiplying the advance angle under the influence of the fuel temperature by the fuel temperature correction coefficient to obtain the correction of the fuel temperature to the advance angle;
and adding the second injection advance angle control parameter and the correction quantity of the advance angle by the fuel temperature to obtain a fourth injection advance angle control parameter.
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| CN201711298390.5A CN108223176A (en) | 2017-12-08 | 2017-12-08 | Based on the environmental parameter of electronic controlled diesel to the correction-compensation method of injection advance angle |
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| CN201711298390.5A CN108223176A (en) | 2017-12-08 | 2017-12-08 | Based on the environmental parameter of electronic controlled diesel to the correction-compensation method of injection advance angle |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538365A (en) * | 2018-11-09 | 2019-03-29 | 中车大连机车车辆有限公司 | Control method, device and the diesel engine of fuel injection advanced angle |
| CN109915293A (en) * | 2019-03-26 | 2019-06-21 | 潍柴重机股份有限公司 | A kind of electronically controlled unit pump power-up time control method and control system |
| CN112302819A (en) * | 2020-10-30 | 2021-02-02 | 中国航空工业集团公司西安航空计算技术研究所 | Method for obtaining fuel injection advance angle based on multi-parameter electronic control diesel engine starting |
| CN112302821A (en) * | 2020-10-30 | 2021-02-02 | 中国航空工业集团公司西安航空计算技术研究所 | Diesel engine fuel injection advance angle obtaining method with protection and delay compensation |
| CN113982806A (en) * | 2021-10-22 | 2022-01-28 | 奇瑞汽车股份有限公司 | Method and device for determining ignition advance angle of engine and computer storage medium |
| CN114017189A (en) * | 2021-10-22 | 2022-02-08 | 北汽福田汽车股份有限公司 | Engine control method and device |
| CN114370346A (en) * | 2022-01-18 | 2022-04-19 | 潍柴动力股份有限公司 | Engine parameter correction method and engine |
| CN115387925A (en) * | 2022-09-21 | 2022-11-25 | 重庆潍柴发动机有限公司 | Method and system for improving performance stability of diesel engine in high-temperature environment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109538365A (en) * | 2018-11-09 | 2019-03-29 | 中车大连机车车辆有限公司 | Control method, device and the diesel engine of fuel injection advanced angle |
| CN109915293A (en) * | 2019-03-26 | 2019-06-21 | 潍柴重机股份有限公司 | A kind of electronically controlled unit pump power-up time control method and control system |
| CN112302821B (en) * | 2020-10-30 | 2022-07-26 | 中国航空工业集团公司西安航空计算技术研究所 | Diesel engine fuel injection advance angle obtaining method with protection and delay compensation |
| CN112302819A (en) * | 2020-10-30 | 2021-02-02 | 中国航空工业集团公司西安航空计算技术研究所 | Method for obtaining fuel injection advance angle based on multi-parameter electronic control diesel engine starting |
| CN112302821A (en) * | 2020-10-30 | 2021-02-02 | 中国航空工业集团公司西安航空计算技术研究所 | Diesel engine fuel injection advance angle obtaining method with protection and delay compensation |
| CN112302819B (en) * | 2020-10-30 | 2022-09-20 | 中国航空工业集团公司西安航空计算技术研究所 | Method for obtaining fuel injection advance angle based on multi-parameter electronic control diesel engine starting |
| CN113982806B (en) * | 2021-10-22 | 2022-10-21 | 奇瑞汽车股份有限公司 | Method and device for determining ignition advance angle of engine and computer storage medium |
| CN114017189A (en) * | 2021-10-22 | 2022-02-08 | 北汽福田汽车股份有限公司 | Engine control method and device |
| CN113982806A (en) * | 2021-10-22 | 2022-01-28 | 奇瑞汽车股份有限公司 | Method and device for determining ignition advance angle of engine and computer storage medium |
| CN114370346A (en) * | 2022-01-18 | 2022-04-19 | 潍柴动力股份有限公司 | Engine parameter correction method and engine |
| CN114370346B (en) * | 2022-01-18 | 2023-01-06 | 潍柴动力股份有限公司 | Engine parameter correction method and engine |
| CN115387925A (en) * | 2022-09-21 | 2022-11-25 | 重庆潍柴发动机有限公司 | Method and system for improving performance stability of diesel engine in high-temperature environment |
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Application publication date: 20180629 |