CN114992030B - Ignition energy control method for natural gas engine - Google Patents
Ignition energy control method for natural gas engine Download PDFInfo
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- CN114992030B CN114992030B CN202210804567.9A CN202210804567A CN114992030B CN 114992030 B CN114992030 B CN 114992030B CN 202210804567 A CN202210804567 A CN 202210804567A CN 114992030 B CN114992030 B CN 114992030B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P9/00—Electric spark ignition control, not otherwise provided for
- F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
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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
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
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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
- F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
- F02B43/10—Engines or plants characterised by use of other specific gases, e.g. acetylene, oxyhydrogen
- F02B2043/103—Natural gas, e.g. methane or LNG used as a fuel
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a natural gas engine ignition energy control method, relates to the technical field of engine control, and solves the technical problem that the ignition energy cannot be adjusted according to the change of working conditions and environments in the prior art, and the method comprises the following steps: calibrating basic ignition energy Micrper by taking the voltage of a storage battery and the water temperature of an engine as input parameters and basic ignition energy as output parameters; acquiring the actual voltage of a storage battery and the actual water temperature of an engine in real time, and inquiring the basic ignition energy Micrper according to the actual voltage and the actual water temperature to obtain target energy; and taking the target energy as control energy, and controlling the ignition system to work according to the control energy. According to the invention, the water temperature is increased to serve as an engine ignition energy correction condition, so that the control of the ignition energy of the cold machine can be improved, and the starting performance of the cold machine is further improved; the ignition energy coefficient is increased to be self-adaptive to the Mic, and the ignition energy requirement of the engine under all working conditions is automatically adjusted and adapted through automatic updating of the misfire diagnosis result.
Description
Technical Field
The invention relates to the technical field of engine control, in particular to a natural gas engine ignition energy control method.
Background
Too high an ignition energy can reduce the life of the ignition system and too low an ignition energy can cause the ignition system to work poorly. The requirements of different operating conditions and operating environments of the engine on ignition energy are different, the ignition energy is only related to voltage under the traditional strategy, and the ignition energy cannot be adjusted according to the change of the operating conditions and the environments. The ignition energy closed-loop control system in the prior art has complex control and high cost.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and aims to provide a natural gas engine ignition energy control method which can adjust ignition energy according to the change of working conditions and environments.
The technical scheme of the invention is as follows: a method of natural gas engine ignition energy control comprising:
calibrating basic ignition energy Micrper by taking the voltage of a storage battery and the water temperature of an engine as input parameters and basic ignition energy as output parameters;
acquiring the actual voltage of a storage battery and the actual water temperature of an engine in real time, and inquiring the basic ignition energy Micrper according to the actual voltage and the actual water temperature to obtain target energy;
and taking the target energy as control energy, and controlling the ignition system to work according to the control energy.
As a further improvement, the ignition energy coefficient is calibrated by taking the engine speed and the engine load as input parameters and taking the ignition energy correction coefficient as output parameters;
acquiring the actual rotating speed of an engine and the actual load of the engine in real time, and inquiring the ignition energy coefficient Micrper according to the actual rotating speed and the actual load to obtain an energy correction coefficient;
the control energy=target energy is an energy correction coefficient, and the ignition system is controlled to work according to the control energy.
Further, the engine speed and the engine load are used as input parameters, and the ignition energy correction coefficient self-adaptive value is used as an output parameter to calibrate the ignition energy coefficient self-adaptive Mic & p;
inquiring the ignition energy coefficient self-adaptive Michaelp according to the actual rotating speed and the actual load to obtain an energy self-adaptive coefficient;
the control energy=target energy (energy correction coefficient+energy adaptation coefficient), and the ignition system operation is controlled according to the control energy.
Further, the ECU performs a misfire diagnosis after the ignition system performs ignition according to the control energy.
Further, the ignition energy coefficient adaptive Michaelp is not updated when the ECU diagnoses no misfire.
Further, when the ECU diagnoses the fire, the ignition energy correction coefficient adaptive value corresponding to the actual rotation speed and the actual load is increased according to a 10% step length and updated to the ignition energy coefficient adaptive Mic.
Advantageous effects
Compared with the prior art, the invention has the advantages that:
according to the invention, the water temperature is increased to serve as an engine ignition energy correction condition, so that the control of the ignition energy of the cold machine can be improved, and the starting performance of the cold machine is further improved; by increasing the self-adaptive Mic of the ignition energy coefficient and automatically updating the fire diagnosis result, the invention automatically adjusts and adapts to the ignition energy requirement of the engine under the full working condition, controls the ignition energy of the engine under the full working condition, ensures the operation of the engine ignition system under the optimal working condition, and has low cost without changing the original ignition system.
Drawings
Fig. 1 is a control flow chart of the present invention.
Detailed Description
The invention will be further described with reference to specific embodiments in the drawings.
Referring to fig. 1, a method for controlling ignition energy of a natural gas engine includes:
calibrating basic ignition energy Micrper by taking the voltage of a storage battery and the water temperature of an engine as input parameters and basic ignition energy as output parameters;
acquiring the actual voltage of the storage battery and the actual water temperature of the engine in real time, and inquiring basic ignition energy Micrper according to the actual voltage and the actual water temperature to obtain target energy;
the target energy is used as control energy, and the work of the ignition system is controlled according to the control energy. By increasing the water temperature as the engine ignition energy correction condition, the control of the ignition energy of the cold machine can be improved, and the starting performance of the cold machine can be further improved.
Further, the engine speed and the engine load are used as input parameters, and the ignition energy correction coefficient is used as an output parameter to calibrate the ignition energy coefficient Micrper;
acquiring the actual rotating speed and the actual load of the engine in real time, and inquiring the ignition energy coefficient Micrper according to the actual rotating speed and the actual load to obtain an energy correction coefficient;
control energy=target energy, and control the operation of the ignition system according to the control energy. The base ignition energy is corrected by the ignition energy coefficient Micrper, so that the accuracy of the ignition energy can be improved.
Further, the engine speed and the engine load are used as input parameters, and the ignition energy correction coefficient self-adaptive value is used as an output parameter to calibrate the ignition energy coefficient self-adaptive Mic & p;
inquiring ignition energy coefficient self-adaptation Michaelp according to the actual rotating speed and the actual load to obtain an energy self-adaptation coefficient;
control energy=target energy (energy correction coefficient+energy adaptation coefficient), and the ignition system operation is controlled according to the control energy. The accuracy of the ignition energy can be further improved.
After the ignition system performs ignition according to the control energy, the ECU performs a misfire diagnosis. When the ECU diagnoses no misfire, the ignition energy coefficient adaptive sep is not updated. When the ECU diagnoses the fire, the self-adaptive value of the ignition energy correction coefficient corresponding to the actual rotation speed and the actual load is increased according to the step length of 10 percent, and is updated to the self-adaptive Michaelp of the ignition energy coefficient. By increasing the self-adaptive Mic of the ignition energy coefficient and automatically updating the fire diagnosis result, the invention automatically adjusts and adapts to the ignition energy requirement of the engine under the full working condition, controls the ignition energy of the engine under the full working condition, ensures the operation of the engine ignition system under the optimal working condition, and has low cost without changing the original ignition system.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these do not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (4)
1. A method for controlling ignition energy of a natural gas engine, comprising:
calibrating basic ignition energy Micrper by taking the voltage of a storage battery and the water temperature of an engine as input parameters and basic ignition energy as output parameters;
acquiring the actual voltage of a storage battery and the actual water temperature of an engine in real time, and inquiring the basic ignition energy Micrper according to the actual voltage and the actual water temperature to obtain target energy;
taking the target energy as control energy, and controlling an ignition system to work according to the control energy;
calibrating an ignition energy coefficient Micrper by taking the engine speed and the engine load as input parameters and taking the ignition energy correction coefficient as output parameters;
acquiring the actual rotating speed of an engine and the actual load of the engine in real time, and inquiring the ignition energy coefficient Micrper according to the actual rotating speed and the actual load to obtain an energy correction coefficient;
the control energy=target energy is an energy correction coefficient, and the ignition system is controlled to work according to the control energy;
calibrating an ignition energy coefficient self-adaptive Micrper by taking the engine speed and the engine load as input parameters and taking an ignition energy correction coefficient self-adaptive value as an output parameter;
inquiring the ignition energy coefficient self-adaptive Michaelp according to the actual rotating speed and the actual load to obtain an energy self-adaptive coefficient;
the control energy=target energy (energy correction coefficient+energy adaptation coefficient), and the ignition system operation is controlled according to the control energy.
2. The method according to claim 1, wherein the ECU performs the misfire diagnosis after the ignition system performs the ignition based on the control energy.
3. The method of claim 2, wherein the ignition energy coefficient is adaptively not updated when the ECU diagnoses no misfire.
4. The method according to claim 2, wherein when the ECU diagnoses a misfire, the ignition energy correction factor adaptation value corresponding to the actual rotation speed and the actual load is increased by 10% step size and updated to the ignition energy factor adaptation michaux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210804567.9A CN114992030B (en) | 2022-07-08 | 2022-07-08 | Ignition energy control method for natural gas engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210804567.9A CN114992030B (en) | 2022-07-08 | 2022-07-08 | Ignition energy control method for natural gas engine |
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| Publication Number | Publication Date |
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| CN114992030A CN114992030A (en) | 2022-09-02 |
| CN114992030B true CN114992030B (en) | 2023-05-16 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865175A (en) * | 2011-07-07 | 2013-01-09 | 曹杨庆 | Energy balance ignition circuit of gasoline engine and balance control method |
| CN107178454A (en) * | 2017-07-28 | 2017-09-19 | 中国第汽车股份有限公司 | A kind of ignition of natural gas engine energy closed loop control method |
| CN114278482A (en) * | 2022-01-04 | 2022-04-05 | 潍柴动力股份有限公司 | Control method and device for ignition energy compensation of engine |
| CN114352454A (en) * | 2022-01-24 | 2022-04-15 | 潍柴动力股份有限公司 | Ignition coil charging duration self-learning method and engine system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9771917B2 (en) * | 2014-10-03 | 2017-09-26 | Cummins Inc. | Variable ignition energy management |
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- 2022-07-08 CN CN202210804567.9A patent/CN114992030B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865175A (en) * | 2011-07-07 | 2013-01-09 | 曹杨庆 | Energy balance ignition circuit of gasoline engine and balance control method |
| CN107178454A (en) * | 2017-07-28 | 2017-09-19 | 中国第汽车股份有限公司 | A kind of ignition of natural gas engine energy closed loop control method |
| CN114278482A (en) * | 2022-01-04 | 2022-04-05 | 潍柴动力股份有限公司 | Control method and device for ignition energy compensation of engine |
| CN114352454A (en) * | 2022-01-24 | 2022-04-15 | 潍柴动力股份有限公司 | Ignition coil charging duration self-learning method and engine system |
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| CN114992030A (en) | 2022-09-02 |
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