WO2015130252A1 - An online optimization method for engine calibration - Google Patents
An online optimization method for engine calibration Download PDFInfo
- Publication number
- WO2015130252A1 WO2015130252A1 PCT/TR2015/000076 TR2015000076W WO2015130252A1 WO 2015130252 A1 WO2015130252 A1 WO 2015130252A1 TR 2015000076 W TR2015000076 W TR 2015000076W WO 2015130252 A1 WO2015130252 A1 WO 2015130252A1
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- WIPO (PCT)
- Prior art keywords
- calibration
- control unit
- engine
- parameters
- parameter
- Prior art date
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Classifications
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2432—Methods of calibration
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1406—Introducing closed-loop corrections characterised by the control or regulation method with use of a optimisation method, e.g. iteration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
Definitions
- the present invention relates to an online optimization method which is used for emission, fuel consumption and performance of engines and which performs engine calibration and control.
- Standard approach used for diesel engine calibration is the statistical experiment design. This approach is based on using various systematic parameter variations intended to collect information about the process. These parameters are the injection timing (pre, main, post) and amounts, pressure of the guide performing fuel injection, mass air flow, intake manifold pressure and some common parameters that are used in engine speed experiment designs. After the necessary and sufficient amount of data is collected, engine models are developed to predict the reactions of the engine based on these test data. Subsequently, optimal values, where the model is defined and valid, are obtained by using certain optimization techniques. Reactions of the engine are shaped as desired by the help of the mathematical optimization tools. The basic objective here is to improve calibration at many stable state points and to determine the rapid transition conditions between these stable points. The engine calibration that is attained is then verified by the tests performed on the dynamometer.
- the Chinese patent document no. CN10233135 (A), an application in the state of the art, discloses a method of calibrating electrically controlled diesel engines.
- the software Auto NOx at each working condition, calculates the emission design values with the NOx emission value inputs of the electrically controlled diesel engines. These calculations are made according to the factors of engine operating cycle working condition, the torque curve, the complete engine reliability and the like. This method enables development of performance and emission of the diesel engines, and provides optimal balance between emission and fuel economy in actual working condition.
- the Chinese patent document no. CN102787932 (A), an application in the state of the art, discloses an apparatus and method for matching and calibrating an electric control diesel engine based on serial communication.
- the apparatus mainly comprises a personal computer and an electronic control unit.
- the personal computer is connected with the electronic control unit through a serial port line, and the unit is connected to the diesel engine through a wire harness.
- the parameters are calibrated on the protocol of a host-slave working mode, and these parameters are monitored.
- the actuator of the diesel engine is driven by a MCU (micro-programmed control unit).
- the information of the engine is fed back by a sensor online on real-time basis. Thus dynamic properties, fuel economy and efficiency of the engine are brought to an optimal level.
- the French patent document no. FR2929009 (A3), an application known in the state of the art, discloses a method that involves defining working conditions of diesel engines, optimizing parameters, and adjusting functions according to the characteristics. Operation of the system is tested with the determined characteristics and the system is controlled, if the condition is satisfied. If the conditions are not satisfied, testing of the operation and controlling of the system are repeated in order to determine the characteristics.
- the method comprises a device for adjusting the adjusting functions and a data medium for automatically adjusting the adjusting functions.
- the objective of the present invention is to provide an online optimization method which is used for emission, fuel consumption and perfonnance of engines and which performs engine calibration and control.
- Figure 1 is the schematic view of the online optimization system.
- FIG. 2 is the schematic view of the online optimization method .
- the components shown in the figures are each given reference numbers as follows:
- An optimization system (1) which is used for emission, fuel consumption and performance of engines (E), and which performs engine (E) calibration and control, basically comprises
- control unit (2) which is adapted to enable use of the functions useful for reading, changing, recording the parameters.
- control interface (3) which is adapted to enable the user to input the desired test values to the control unit (2) and to perform the necessary controls on the control unit (2),
- At least one engine control interface (4) which is adapted to control the engine (E) that will be calibrated and to receive the information related to the engine
- At least one dynamometer (5) which is adapted to perform the calibration process
- At least one measuring device (6) which is adapted to receive the necessary information during calibration and to ensure that calibration is performed accurately by sending this information to the dynamometer (5), and which can be integrated with the engine.
- An online optimization method (100) which is used for emission, fuel consumption and performance of engines, and which performs engine calibration and control, basically comprises the steps of
- the engine control interface (4) receiving the information of the engine ( E) that will be calibrated and transmitting it to the control unit (2) (102),
- control unit (2) determining the information of the path that will be followed during calibration and creating the calibration cycle in accordance with the selected parameters and direction (106), starting the calibration process and sending calibration information to the dynamometer (5) (107),
- step 104 if calibration is sufficient, passing to step 111 ; if calibration is not sufficient, returning to step 104 (110),
- step 104 in step 104 "inputting the type and number of the parameter that will be used to the control unit (2) via the control interface (3), and the control unit (2) performing normalization in accordance with the parameters that are input and even distribution of the parameters" of the online optimization method of the present invention, the measured values are preferably normalized to the range of [0, 1] in order to ensure that all of the inputs are proportional to each other.
- measurements of parameters with very different sizes are evenly distributed proportionately and are used in the calculations this way.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Engines (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to an online optimization method (100) which is used for emission, fuel consumption and performance of engines (E) and which performs engine (E) calibration and control.
Description
DESCRIPTION
AN ONLINE OPTIMIZATION METHOD FOR ENGINE CALIBRATION
Field of the Invention
The present invention relates to an online optimization method which is used for emission, fuel consumption and performance of engines and which performs engine calibration and control.
Background of the Invention
Standard approach used for diesel engine calibration is the statistical experiment design. This approach is based on using various systematic parameter variations intended to collect information about the process. These parameters are the injection timing (pre, main, post) and amounts, pressure of the guide performing fuel injection, mass air flow, intake manifold pressure and some common parameters that are used in engine speed experiment designs. After the necessary and sufficient amount of data is collected, engine models are developed to predict the reactions of the engine based on these test data. Subsequently, optimal values, where the model is defined and valid, are obtained by using certain optimization techniques. Reactions of the engine are shaped as desired by the help of the mathematical optimization tools. The basic objective here is to improve calibration at many stable state points and to determine the rapid transition conditions between these stable points. The engine calibration that is attained is then verified by the tests performed on the dynamometer.
The Chinese patent document no. CN10233135 (A), an application in the state of the art, discloses a method of calibrating electrically controlled diesel engines. The software Auto NOx, at each working condition, calculates the emission design values with the NOx emission value inputs of the electrically controlled
diesel engines. These calculations are made according to the factors of engine operating cycle working condition, the torque curve, the complete engine reliability and the like. This method enables development of performance and emission of the diesel engines, and provides optimal balance between emission and fuel economy in actual working condition.
The Chinese patent document no. CN102787932 (A), an application in the state of the art, discloses an apparatus and method for matching and calibrating an electric control diesel engine based on serial communication. The apparatus mainly comprises a personal computer and an electronic control unit. The personal computer is connected with the electronic control unit through a serial port line, and the unit is connected to the diesel engine through a wire harness. The parameters are calibrated on the protocol of a host-slave working mode, and these parameters are monitored. The actuator of the diesel engine is driven by a MCU (micro-programmed control unit). The information of the engine is fed back by a sensor online on real-time basis. Thus dynamic properties, fuel economy and efficiency of the engine are brought to an optimal level.
The French patent document no. FR2929009 (A3), an application known in the state of the art, discloses a method that involves defining working conditions of diesel engines, optimizing parameters, and adjusting functions according to the characteristics. Operation of the system is tested with the determined characteristics and the system is controlled, if the condition is satisfied. If the conditions are not satisfied, testing of the operation and controlling of the system are repeated in order to determine the characteristics. The method comprises a device for adjusting the adjusting functions and a data medium for automatically adjusting the adjusting functions.
Summary of the Invention
The objective of the present invention is to provide an online optimization method which is used for emission, fuel consumption and perfonnance of engines and which performs engine calibration and control.
Detailed Description of the Invention
An online optimization method developed to fulfill the objective of the present invention is illustrated in the accompanying figures, in which:
Figure 1 is the schematic view of the online optimization system.
Figure 2 is the schematic view of the online optimization method . The components shown in the figures are each given reference numbers as follows:
1. Optimization system
2. Control unit
3. Control interface
4. Engine control interface
5. Dynamometer
6. Measuring device
E. Engine
An optimization system (1), which is used for emission, fuel consumption and performance of engines (E), and which performs engine (E) calibration and control, basically comprises
at least one control unit (2) which is adapted to enable use of the functions useful for reading, changing, recording the parameters.
- at least one control interface (3) which is adapted to enable the user to input the desired test values to the control unit (2) and to perform the necessary controls on the control unit (2),
- at least one engine control interface (4) which is adapted to control the engine (E) that will be calibrated and to receive the information related to the engine
(E),
at least one dynamometer (5) which is adapted to perform the calibration process,
- at least one measuring device (6), which is adapted to receive the necessary information during calibration and to ensure that calibration is performed accurately by sending this information to the dynamometer (5), and which can be integrated with the engine.
An online optimization method (100), which is used for emission, fuel consumption and performance of engines, and which performs engine calibration and control, basically comprises the steps of
- connecting the engine (E) that will be calibrated to the optimization system (1 ) (101),
- the engine control interface (4) receiving the information of the engine ( E) that will be calibrated and transmitting it to the control unit (2) (102),
- determining the type, number and limit of the parameters that will be used in calibration in accordance with the information received from the engine (E) (103),
- inputting the type and number of the parameter that will be used to the control unit (2) via the control interface (3), and the control unit (2) performing normalization in accordance with the parameters that are input and even distribution of the parameters (104),
- inputting the parameter direction that will be used to the control unit (2) via the control interface (3) (105),
the control unit (2) determining the information of the path that will be followed during calibration and creating the calibration cycle in accordance with the selected parameters and direction (106),
starting the calibration process and sending calibration information to the dynamometer (5) (107),
performing the calibration process by means of the dynamometer for each parameter in an order from the first sent parameter towards the last sent parameter in accordance with the selected parameters and the direction (108), terminating the calibration process and sending the calibration information produced as a result of the calibration process to the control unit (2) via the measuring device (6) (109),
displaying the calibration information via the control interface, and if calibration is sufficient, passing to step 111 ; if calibration is not sufficient, returning to step 104 (110),
terminating calibration (111).
In a preferred embodiment of the invention, in step 104 "inputting the type and number of the parameter that will be used to the control unit (2) via the control interface (3), and the control unit (2) performing normalization in accordance with the parameters that are input and even distribution of the parameters" of the online optimization method of the present invention, the measured values are preferably normalized to the range of [0, 1] in order to ensure that all of the inputs are proportional to each other. By means of this step, measurements of parameters with very different sizes are evenly distributed proportionately and are used in the calculations this way.
Claims
1. An online optimization method (100), which is used for emission, fuel consumption and performance of engines, and which performs engine calibration and control, basically characterized by the steps of
connecting the engine (E) that will be calibrated to the optimization system (1) (101),
the engine control interface (4) receiving the information of the engine (E) that will be calibrated and transmitting it to the control unit (2) (102),
- determining the type, number and limit of the parameters that will be used in calibration in accordance with the information received from the engine (E) (103),
inputting the type and number of the parameter that will be used to the control unit (2) via the control interface (3), and the control unit (2) performing normalization in accordance with the parameters that are input and even distribution of the parameters (104),
- inputting the parameter direction that will be used to the control unit (2) via the control interface (3) (105),
- the control unit (2) determining the information of the path that will be followed during calibration and creating the calibration cycle in accordance with the selected parameters and direction (106),
starting the calibration process and sending calibration information to the dynamometer (5) (107),
performing the calibration process by means of the dynamometer for each parameter in an order from the first sent parameter towards the last sent parameter in accordance with the selected parameters and the direction (108),
- terminating the calibration process and sending the calibration information produced as a result of the calibration process to the control unit (2) via the measuring device (6) (109),
displaying the calibration information via the control interface, and if calibration is sufficient, passing to step 111; if calibration is not sufficient, returning to step 104 (1 10),
- terminating calibration (111).
2. An online optimization method (100), characterized in that, in step 104 "inputting the type and number of the parameter that will be used to the control unit (2) via the control interface (3), and the control unit (2) performing normalization in accordance with the parameters that are input and even distribution of the parameters", the measured values are preferably normalized to the range of [0, 1 ] in order to ensure that all of the inputs are proportional to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2014/02429 | 2014-02-28 | ||
| TR201402429 | 2014-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015130252A1 true WO2015130252A1 (en) | 2015-09-03 |
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ID=52991933
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2015/000076 WO2015130252A1 (en) | 2014-02-28 | 2015-02-26 | An online optimization method for engine calibration |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3086346A1 (en) * | 2018-09-26 | 2020-03-27 | Psa Automobiles Sa | METHOD AND DEVICE FOR PREDICTIVE ESTIMATION OF THE TEMPERATURE OF EXHAUST GASES FROM A VEHICLE HEAT ENGINE |
| EP3611363A3 (en) * | 2018-08-08 | 2020-05-27 | Caterpillar, Inc. | Power system optimization |
| KR102187104B1 (en) * | 2019-10-08 | 2020-12-04 | 주식회사 현대케피코 | Fuel calibration method and system |
| CN113008560A (en) * | 2021-02-24 | 2021-06-22 | 中国重汽集团济南动力有限公司 | Method for optimizing performance and emission of diesel engine of high-pressure common rail system |
| CN114995346A (en) * | 2022-06-13 | 2022-09-02 | 中国第一汽车股份有限公司 | Engine electrical diagnosis calibration method, device, equipment and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3611363A3 (en) * | 2018-08-08 | 2020-05-27 | Caterpillar, Inc. | Power system optimization |
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| CN114995346A (en) * | 2022-06-13 | 2022-09-02 | 中国第一汽车股份有限公司 | Engine electrical diagnosis calibration method, device, equipment and medium |
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