CN114992030A - Ignition energy control method for natural gas engine - Google Patents
Ignition energy control method for natural gas engine Download PDFInfo
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- CN114992030A CN114992030A CN202210804567.9A CN202210804567A CN114992030A CN 114992030 A CN114992030 A CN 114992030A CN 202210804567 A CN202210804567 A CN 202210804567A CN 114992030 A CN114992030 A CN 114992030A
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- energy
- ignition
- engine
- ignition energy
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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
Abstract
The invention discloses a method for controlling ignition energy of a natural gas engine, which 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 comprises the following steps: the method comprises the following steps of taking the voltage of a storage battery and the water temperature of an engine as input parameters, and taking basic ignition energy as an output parameter to calibrate basic ignition energy Meipu; acquiring actual voltage of a storage battery and actual water temperature of an engine in real time, and inquiring the basic ignition energy Meipu 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 the correction condition of the ignition energy of the engine, so that the ignition energy control of the cold machine can be improved, and the starting performance of the cold machine is further improved; the self-adaptive Meipu method is characterized in that the self-adaptive Meipu method is realized by increasing the ignition energy coefficient, the automatic updating of the misfire diagnosis result is realized, and the ignition energy requirement under the whole working condition of the engine is automatically adjusted and adapted.
Description
Technical Field
The invention relates to the technical field of engine control, in particular to a method for controlling ignition energy of a natural gas engine.
Background
Too high ignition energy can reduce ignition system life and too low ignition energy can result in poor ignition system operation. The requirements of different operating conditions and operating environments of the engine on ignition energy are different, the ignition energy under the traditional strategy is only related to voltage, 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 is complex in control and high in cost.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and aims to provide a method for controlling the ignition energy of a natural gas engine, which can adjust the ignition energy according to the change of working conditions and environments.
The technical scheme of the invention is as follows: a natural gas engine ignition energy control method comprising:
the method comprises the following steps of taking the voltage of a storage battery and the water temperature of an engine as input parameters, and taking basic ignition energy as an output parameter to calibrate basic ignition energy Meipu;
acquiring actual voltage of a storage battery and actual water temperature of an engine in real time, and inquiring the basic ignition energy Meipu 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 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 mepl;
acquiring the actual rotating speed and the actual load of the engine in real time, and inquiring the ignition energy coefficient Meipu according to the actual rotating speed and the actual load to obtain an energy correction coefficient;
and the control energy is the target energy and the 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 adaptive value is used as an output parameter to calibrate the ignition energy coefficient adaptive Meipu;
inquiring the ignition energy coefficient self-adaptive Meipu according to the actual rotating speed and the actual load to obtain an energy self-adaptive coefficient;
and the control energy is target energy (energy correction coefficient + energy adaptive coefficient), and the ignition system is controlled to work according to the control energy.
Further, after the ignition system performs ignition according to the control energy, the ECU performs misfire diagnosis.
Further, the ignition energy coefficient is not updated adaptively by the Meipu when the ECU diagnoses no misfire.
Further, when the ECU diagnoses the fire, the self-adaptive value of the ignition energy correction coefficient corresponding to the actual rotating speed and the actual load is increased by 10% step length and is updated to the self-adaptive Meipu of the ignition energy coefficient.
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 the ignition energy correction condition of the engine, so that the ignition energy control of the cold machine can be improved, and the starting performance of the cold machine is further improved; the method has the advantages that the self-adaptive prepping of the ignition energy coefficient is increased, the misfire diagnosis result is automatically updated, the ignition energy requirement under the full working condition of the engine is automatically adjusted and adapted, the ignition energy of the engine is controlled under the full working condition, the ignition system of the engine is ensured to operate under the optimal working condition, the original ignition system does not need to be changed, and the cost is low.
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 shown in the drawings.
Referring to fig. 1, a method for controlling ignition energy of a natural gas engine includes:
the method comprises the following steps of taking the voltage of a storage battery and the water temperature of an engine as input parameters, and taking basic ignition energy as an output parameter to calibrate basic ignition energy Meipu;
acquiring actual voltage of a storage battery and actual water temperature of an engine in real time, and inquiring basic ignition energy Meipu 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. The control of the ignition energy of the cold machine can be improved by increasing the water temperature as the correction condition of the ignition energy of the engine, so that the starting performance of the cold machine is improved.
Further, taking the engine speed and the engine load as input parameters, and taking an ignition energy correction coefficient as an output parameter to calibrate the ignition energy coefficient meppe;
acquiring the actual rotating speed and the actual load of the engine in real time, and inquiring the ignition energy coefficient Meipu according to the actual rotating speed and the actual load to obtain an energy correction coefficient;
and the control energy is the target energy and the energy correction coefficient, and the ignition system is controlled to work according to the control energy. The basic ignition energy advancing is corrected through the ignition energy coefficient advancing, and 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 adaptive value is used as an output parameter to calibrate the ignition energy coefficient adaptive Meipu;
inquiring the ignition energy coefficient self-adaptive Meipu according to the actual rotating speed and the actual load to obtain an energy self-adaptive coefficient;
and the control energy is the target energy (energy correction coefficient + energy adaptive coefficient), and the ignition system is controlled to work according to the control energy. The accuracy of the ignition energy can be further improved.
And after the ignition system performs ignition according to the control energy, the ECU performs misfire diagnosis. When the ECU diagnoses no misfire, the ignition energy coefficient adaptive Meipu is not updated. When the ECU diagnoses the fire, the self-adaptive value of the ignition energy correction coefficient corresponding to the actual rotating speed and the actual load is increased according to 10% step length and is updated to the self-adaptive Meipu of the ignition energy coefficient. The method has the advantages that the self-adaptive prepping of the ignition energy coefficient is increased, the misfire diagnosis result is automatically updated, the ignition energy requirement under the full working condition of the engine is automatically adjusted and adapted, the ignition energy of the engine is controlled under the full working condition, the ignition system of the engine is ensured to operate under the optimal working condition, the original ignition system does not need to be changed, and the cost is low.
The above is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that several variations and modifications can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (6)
1. A natural gas engine ignition energy control method, comprising:
the method comprises the following steps of taking the voltage of a storage battery and the water temperature of an engine as input parameters, and taking basic ignition energy as an output parameter to calibrate basic ignition energy Meipu;
acquiring actual voltage of a storage battery and actual water temperature of an engine in real time, and inquiring the basic ignition energy Meipu 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.
2. The ignition energy control method for the natural gas engine as claimed in claim 1, wherein the ignition energy coefficient mep is calibrated with the engine speed and the engine load as input parameters and with the ignition energy correction coefficient as an output parameter;
acquiring the actual rotating speed of the engine and the actual load of the engine in real time, and inquiring the ignition energy coefficient Meipu according to the actual rotating speed and the actual load to obtain an energy correction coefficient;
and the control energy is the target energy and the energy correction coefficient, and the ignition system is controlled to work according to the control energy.
3. The ignition energy control method of the natural gas engine as claimed in claim 2, characterized in that the ignition energy coefficient adaptive meprobe is calibrated by taking the engine speed and the engine load as input parameters and taking the ignition energy correction coefficient adaptive value as an output parameter;
inquiring the ignition energy coefficient self-adaptive Meipu according to the actual rotating speed and the actual load to obtain an energy self-adaptive coefficient;
and the control energy is target energy (energy correction coefficient + energy adaptive coefficient), and the ignition system is controlled to work according to the control energy.
4. The natural gas engine ignition energy control method as claimed in claim 3, wherein the ECU performs misfire diagnosis after the ignition system performs ignition based on the control energy.
5. The natural gas engine ignition energy control method as claimed in claim 4, wherein the ignition energy coefficient is adaptively not updated by the MPU when the ECU diagnoses no misfire.
6. The ignition energy control method of the natural gas engine according to claim 4, characterized in that when the ECU diagnoses a misfire, the ignition energy correction coefficient adaptive values corresponding to the actual rotation speed and the actual load are increased in 10% steps and updated to the ignition energy coefficient adaptive MPE.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210804567.9A CN114992030B (en) | 2022-07-08 | 2022-07-08 | Ignition energy control method for natural gas engine |
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| CN202210804567.9A CN114992030B (en) | 2022-07-08 | 2022-07-08 | Ignition energy control method for natural gas engine |
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| CN114992030B CN114992030B (en) | 2023-05-16 |
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Citations (5)
| 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 |
| US20160097367A1 (en) * | 2014-10-03 | 2016-04-07 | Cummins Inc. | Variable ignition energy management |
| 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 |
-
2022
- 2022-07-08 CN CN202210804567.9A patent/CN114992030B/en active Active
Patent Citations (5)
| 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 |
| US20160097367A1 (en) * | 2014-10-03 | 2016-04-07 | Cummins Inc. | Variable ignition energy management |
| 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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| CN114992030B (en) | 2023-05-16 |
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