CN115045751A - Energy correction control method for electronic supercharger - Google Patents
Energy correction control method for electronic supercharger Download PDFInfo
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- CN115045751A CN115045751A CN202210877857.6A CN202210877857A CN115045751A CN 115045751 A CN115045751 A CN 115045751A CN 202210877857 A CN202210877857 A CN 202210877857A CN 115045751 A CN115045751 A CN 115045751A
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- 238000012937 correction Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000011217 control strategy Methods 0.000 claims description 12
- 230000007613 environmental effect Effects 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses an energy correction control method for an electronic supercharger, which is mainly designed and conceived in the technical scheme that on the basis of the original supercharging control logic of the electronic supercharger, a correction optimization coefficient calibrated by a real vehicle is added, so that the energy of the electronic supercharger is reasonably corrected along with the altitude and the ambient temperature, and the driving comfort at different altitudes and temperatures is improved. Specifically, in the energy control process of the supercharger, the energy of the supercharger is optimized based on atmospheric pressure and ambient temperature, a correction coefficient adaptive to the current working condition is provided and is combined with the original energy control logic, so that the actual supercharging pressure can be directly and reasonably output to match the whole vehicle for use.
Description
Technical Field
The invention relates to the technical field of electronic superchargers, in particular to an energy correction control method of an electronic supercharger.
Background
The driving experience of the passenger car is more and more emphasized along with the upgrading and updating of the whole car, and the fuel consumption standard of the passenger car in the industry is continuously updated and perfected, namely the power performance of the passenger car is also abundant on the premise of meeting the fuel consumption regulation.
Therefore, various automobile manufacturers are researching and applying advanced energy-saving technology of the whole automobile, such as: the system comprises an electronic supercharged engine, an idling start-stop function, an electric control thermostat, a gear shift prompting function, an intelligent generator and the like, so that the whole vehicle is more and more oil-saving and environment-friendly.
The method has the advantages that the research and development of the control logic of the electronic supercharger which is mainly used promote the supercharging effect of an engine provided with the electronic supercharger, and plays a key role in improving the dynamic property, but from the view of driving and using of the whole passenger vehicle, the requirement of only achieving oil consumption and the dynamic property is still insufficient, and the driving smoothness and the comfort are considered while supercharging is required.
Disclosure of Invention
In view of the above, the present invention aims to provide an energy correction control method for an electronic supercharger to solve the aforementioned technical problems.
The technical scheme adopted by the invention is as follows:
the invention provides an energy correction control method for an electronic supercharger, which comprises the following steps:
establishing and adding an initial pressurization correction table, wherein the initial pressurization correction table is related to atmospheric pressure and ambient temperature;
carrying out real-vehicle debugging in different altitude areas and different environmental temperatures, and calibrating correction coefficient data in the initial supercharging correction table to obtain a target supercharging correction table;
in the actual application stage, the target supercharging correction table is inquired based on the obtained actual environment temperature and the actual atmospheric pressure, and a corresponding target correction coefficient is obtained;
and combining the target correction coefficient with an original energy control strategy of the electronic supercharger to obtain optimized supercharger energy and obtain the actual supercharging pressure.
In at least one possible implementation, the original electronic supercharger energy control strategy comprises: and a supercharger enthalpy change control table is pre-constructed based on the compressed air volume flow of the air compressor and the supercharger rotating speed.
In at least one possible implementation manner, the combining the target correction coefficient with an original electronic supercharger energy control strategy to obtain the optimized supercharger energy comprises:
and multiplying a correction coefficient related to the enthalpy change of the supercharger in the target supercharging correction table by the supercharger enthalpy change control table based on the actual environment temperature and the actual atmospheric pressure to obtain the optimized maximum supercharging pressure value.
In at least one possible implementation manner, in the initial boost correction table, the atmospheric pressure and the ambient temperature form a matrix form; wherein, the correction coefficient in the matrix determined by an atmospheric pressure parameter and an environmental temperature parameter is preset as a default initial value to be updated before the real vehicle calibration.
In at least one possible implementation manner, the real vehicle debugging includes: and adjusting the boost pressure of the real vehicle based on the default initial value to be updated, and increasing or decreasing the default initial value in the boost adjusting process until the shaking working condition of the vehicle reaches the preset standard under a certain boost pressure.
In at least one possible implementation manner, the preset criterion is at least one of the following: the jitter is completely eliminated, the jitter degree is reduced to be expected, and the detection data representing the jitter reaches a preset allowable range.
In at least one possible implementation, the adding an initial boost correction table includes: and adding the initial boost correction table into a supercharger energy control model preset in an engine control unit, wherein the supercharger energy control model is at least used for executing the original electronic supercharger energy control strategy.
The main design concept of the invention is that on the basis of the original supercharging control logic of the electronic supercharger, a correction optimization coefficient calibrated by a real vehicle is added, so that the energy of the electronic supercharger is reasonably corrected along with the altitude and the ambient temperature, and the driving comfort under different altitudes and temperatures is improved. Specifically, in the energy control process of the supercharger, the energy of the supercharger is optimized based on atmospheric pressure and ambient temperature, a correction coefficient adaptive to the current working condition is provided and is combined with the original energy control logic, so that the actual supercharging pressure can be directly and reasonably output to match the whole vehicle for use.
In addition, the embodiment of the invention mainly aims to solve the problems that the supercharging pressure shakes due to overlarge enthalpy change when the vehicle is in a low-temperature high-altitude environment, and the supercharging pressure in a non-low-temperature non-high-altitude area is influenced if the enthalpy change is singly reduced, so that the supercharging pressure can be reasonably corrected according to different environmental working conditions.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of an energy correction control method for an electronic supercharger according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
The invention provides an embodiment of an energy correction control method of an electronic supercharger, and specifically, as shown in fig. 1, the method includes:
step S1, constructing and adding an initial pressurization correction table, wherein the initial pressurization correction table is related to atmospheric pressure and ambient temperature;
step S2, carrying out real vehicle debugging in different altitude areas and different environmental temperatures, and calibrating correction coefficient data in the initial supercharging correction table to obtain a target supercharging correction table;
step S3, in the actual application stage, inquiring the target supercharging correction table based on the obtained actual environment temperature and actual atmospheric pressure to obtain a corresponding target correction coefficient;
and step S4, combining the target correction coefficient with an original electronic supercharger energy control strategy to obtain optimized supercharger energy and obtain actual supercharging pressure.
Further, the original electronic supercharger energy control strategy comprises: and a supercharger enthalpy change control table is pre-constructed based on the compressed air volume flow of the air compressor (air compressor volume flow) and the supercharger rotating speed.
Based on this concept, the combining the target correction coefficient with the original energy control strategy of the electronic supercharger to obtain the optimized supercharger energy specifically means: and multiplying a correction coefficient related to the enthalpy change of the supercharger in the target supercharging correction table by the supercharger enthalpy change control table based on the actual environment temperature and the actual atmospheric pressure to obtain the optimized maximum supercharging pressure value. (this approach is also used in the real vehicle commissioning phase).
Further, in the initial boost correction table, a matrix form is formed by atmospheric pressure and ambient temperature, and a correction coefficient in the matrix determined by an atmospheric pressure parameter and an ambient temperature parameter is preset as a default initial value to be updated before real vehicle calibration.
Based on the concept, the real vehicle debugging comprises the following steps: and performing actual vehicle supercharging pressure adjustment based on a default initial value to be updated, and increasing or decreasing the default initial value (depending on specific setting of the initial value) in the supercharging pressure adjustment process until the shaking working condition of the vehicle reaches a preset standard (such as completely eliminating shaking, or reducing the shaking degree to an expected degree, or detecting data of a sensor for representing shaking reaches a preset allowable range, and the like) under a certain supercharging pressure.
Finally, it may be noted that said adding an initial boost correction table comprises: adding the initial boost correction table into a supercharger energy control model preset in an Engine Control Unit (ECU), wherein the supercharger energy control model is used for executing the original electronic supercharger energy control strategy.
In summary, the main design concept of the present invention is to add a correction optimization coefficient calibrated by a real vehicle on the basis of the boost control logic of the original electronic supercharger, so that the energy of the electronic supercharger can be reasonably corrected along with the altitude and the ambient temperature, thereby improving the driving comfort under different altitudes and temperatures. Specifically, in the energy control process of the supercharger, the energy of the supercharger is optimized based on atmospheric pressure and ambient temperature, a correction coefficient adaptive to the current working condition is provided and is combined with the original energy control logic, so that the actual supercharging pressure can be directly and reasonably output to match the whole vehicle for use.
In the embodiments of the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a and b, a and c, b and c or a and b and c, wherein a, b and c can be single or multiple.
The structure, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, but the above embodiments are merely preferred embodiments of the present invention, and it should be understood that technical features related to the above embodiments and preferred modes thereof can be reasonably combined and configured into various equivalent schemes by those skilled in the art without departing from and changing the design idea and technical effects of the present invention; therefore, the invention is not limited to the embodiments shown in the drawings, and all the modifications and equivalent embodiments that can be made according to the idea of the invention are within the scope of the invention as long as they are not beyond the spirit of the description and the drawings.
Claims (7)
1. An electronic supercharger energy correction control method, characterized by comprising:
establishing and adding an initial pressurization correction table, wherein the initial pressurization correction table is related to atmospheric pressure and ambient temperature;
carrying out real-vehicle debugging in different altitude areas and different environmental temperatures, and calibrating correction coefficient data in the initial supercharging correction table to obtain a target supercharging correction table;
in the actual application stage, the target supercharging correction table is inquired based on the obtained actual environment temperature and the actual atmospheric pressure, and a corresponding target correction coefficient is obtained;
and combining the target correction coefficient with an original energy control strategy of the electronic supercharger to obtain optimized supercharger energy and obtain the actual supercharging pressure.
2. The electronic supercharger energy correction control method of claim 1, wherein the original electronic supercharger energy control strategy comprises: and a supercharger enthalpy change control table is pre-constructed based on the compressed air volume flow of the air compressor and the supercharger rotating speed.
3. The electronic supercharger energy correction control method of claim 2, wherein the combining the target correction factor with an original electronic supercharger energy control strategy to obtain the optimized supercharger energy comprises:
and multiplying a correction coefficient related to the enthalpy change of the supercharger in the target supercharging correction table by the supercharger enthalpy change control table based on the actual environment temperature and the actual atmospheric pressure to obtain the optimized maximum supercharging pressure value.
4. The electronic supercharger energy correction control method according to claim 1, characterized in that in the initial supercharging correction table, atmospheric pressure and ambient temperature are made into a matrix form; wherein, the correction coefficient in the matrix determined by an atmospheric pressure parameter and an environmental temperature parameter is preset as a default initial value to be updated before the real vehicle calibration.
5. The electronic supercharger energy correction control method according to claim 4, wherein the real vehicle commissioning includes: and adjusting the boost pressure of the real vehicle based on the default initial value to be updated, and increasing or decreasing the default initial value in the boost adjusting process until the shaking working condition of the vehicle reaches the preset standard under a certain boost pressure.
6. The electronic supercharger energy correction control method according to claim 5, wherein the preset criterion is at least one of: the jitter is completely eliminated, the jitter degree is reduced to be expected, and the detection data representing the jitter reaches a preset allowable range.
7. The electronic supercharger energy correction control method according to any one of claims 1 to 6, wherein the adding of the initial boost correction table includes: and adding the initial boost correction table into a supercharger energy control model preset in an engine control unit, wherein the supercharger energy control model is at least used for executing the original electronic supercharger energy control strategy.
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| CN202210877857.6A CN115045751A (en) | 2022-07-25 | 2022-07-25 | Energy correction control method for electronic supercharger |
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| CN202210877857.6A CN115045751A (en) | 2022-07-25 | 2022-07-25 | Energy correction control method for electronic supercharger |
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2022
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Patent Citations (9)
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| JP2007303284A (en) * | 2006-05-08 | 2007-11-22 | Denso Corp | Control device for internal combustion engine with supercharger |
| CN106523139A (en) * | 2015-09-14 | 2017-03-22 | 福特环球技术公司 | Method and system for surge control |
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