CN104033310A - Method for adjusting ignition advance angle of coke-oven gas engine by means of component detection - Google Patents
Method for adjusting ignition advance angle of coke-oven gas engine by means of component detection Download PDFInfo
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- CN104033310A CN104033310A CN201410261606.0A CN201410261606A CN104033310A CN 104033310 A CN104033310 A CN 104033310A CN 201410261606 A CN201410261606 A CN 201410261606A CN 104033310 A CN104033310 A CN 104033310A
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- msub
- carbon monoxide
- methane
- ignition advance
- advance angle
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Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 title claims abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000007789 gas Substances 0.000 claims abstract description 55
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 30
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- 230000010354 integration Effects 0.000 claims abstract description 3
- 239000000571 coke Substances 0.000 claims description 34
- 239000002737 fuel gas Substances 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract 3
- 230000004069 differentiation Effects 0.000 abstract 1
- 230000009916 joint effect Effects 0.000 abstract 1
- 238000012937 correction Methods 0.000 description 22
- 239000000446 fuel Substances 0.000 description 12
- 239000003502 gasoline Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 238000011217 control strategy Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Electrical Control Of Ignition Timing (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a method for adjusting an ignition advance angle of a coke-oven gas engines by means of component detection. The method includes determining volume fractions of hydrogen, methane and carbon monoxide in gas on the basis of a methane sensor and a carbon monoxide sensor when components of coke-oven gas are changed; adjusting the ignition advance angles by the aid of incremental PID (proportion, integration and differentiation) controllers when the volume fractions of the hydrogen, the methane and the carbon monoxide meet certain conditions; updating the hydrogen, methane and carbon monoxide volume fractions in an EEPROM (electrically erasable programmable read-only memory) via a self-learning module. The method has the advantages that difference values of the components of the gas and initial values stored in a control unit are inputted, the components of the gas are measured by the sensors, and accordingly the ignition advance angle of the coke-oven gas engine can be corrected under the joint effects of the three incremental PID controllers.
Description
Technical Field
The invention belongs to the technical field of engine engineering, and relates to a method for adjusting the ignition advance angle of a coke oven gas engine by component detection. The self-adaptive control method is suitable for the coke oven gas engine refitted by the gasoline engine at present, and can realize the quick and accurate self-adaptive control of the ignition advance angle of the coke oven gas engine when the components of the coke oven gas change.
Background
With the rapid development of the automobile industry, the huge energy consumption threatens the national energy supply safety, and simultaneously, the discharged large amount of tail gas also directly threatens the ecological environment and human health. The alternative fuel for cleaning vehicles has become an important subject of research in various countries, wherein alcohol fuels and gas fuels are the most widely used alternative fuels, but compared with alcohol fuels, gas fuels have great advantages in many aspects such as resources, economy, emission, safety and the like, and are the first choice alternative fuels for automobiles at present. The coke oven gas is an ideal clean alternative fuel by combining the national conditions of China.
At present, a coke oven gas engine is directly improved on the basis of a gasoline engine, and a control strategy of the gasoline engine is reserved. However, the composition of the coke oven gas after passing through the purification device is complex and variable (the gasoline composition is considered to be fixed), the combustible components of 55-60% of hydrogen, 23-28% of methane and 5-8% of carbon monoxide, the non-combustible components of 3-5% of nitrogen, 1-3% of carbon dioxide and 3-4% of other gases are generally considered to be 90% by volume, and the characteristic of the coke oven gas determines that the coke oven gas engine is adjusted in some aspects of control, particularly for the control of the ignition advance angle, the ignition advance angle directly influences the output power of the engine, the fuel consumption, the driving performance of the automobile and harmful emissions generated by combustion. For a gasoline engine, the ignition advance angle of the gasoline engine consists of a basic ignition advance angle and a correction ignition advance angle: wherein, the correction of the ignition advance angle comprises warm-up correction, idle speed stability correction, air-fuel ratio feedback correction, overheating correction, detonation correction and the like; for the coke oven gas engine, on the basis of the ignition control strategy of the gasoline engine, the ignition advance angle correction generated by the change of the gas components of the coke oven gas is increased.
Disclosure of Invention
The invention aims to provide a method for adjusting the ignition advance angle of a coke oven gas engine by detecting components of the coke oven gas. When the components of the coke oven gas change, the volume fractions of hydrogen, methane and carbon monoxide in the gas are determined based on the methane sensor and the carbon monoxide sensor, when the volume fractions of the hydrogen, the methane and the carbon monoxide meet a certain condition, the ignition advance angle is adjusted through the incremental PID controller, and the volume fractions of the hydrogen, the methane and the carbon monoxide in the EEPROM are updated through the self-learning module.
The technical scheme of the invention is as follows: the invention relates to a method for adjusting the ignition advance angle of a coke oven gas engine by detecting components of the coke oven gas, which comprises the following steps:
the first step is as follows: the methane sensor detects the methane component in the fuel gas and determines the volume fraction of methane in the fuel gas
The second step is that: the carbon monoxide sensor detects the carbon monoxide component in the fuel gas and determines the carbon monoxide volume fraction
The third step: obtaining real-time methane volume fraction in fuel gasVolume fraction of carbon monoxideAnd hydrogen volume fractionComparing the initial values of the three components in the EEPROM to obtain an error valueAnd
the fourth step: will be provided withAndrespectively as input parameters of an incremental PID controller to calculate ignitionCorrection value of advance angle
The fifth step: updatingAndand writing into the EEPROM.
The invention has the beneficial effects that:
(1) the invention has the advantages that the volume fraction of methane, the volume fraction of carbon monoxide and the volume fraction of hydrogen in the fuel gas are measured according to the methane sensor and the carbon monoxide sensor, and when the three combustible components and the interpolation of the initial values stored in the control unit meet certain conditions, the ignition advance angle of the coke oven gas engine is corrected through the incremental PID controller, so that the self-adaptive control speed of the engine when the fuel gas components are changed is improved.
(2) The invention takes the difference value of the fuel component measured by the sensor and the initial value stored in the control unit as the input, and corrects the ignition advance angle of the coke oven gas engine through the combined action of three incremental PID controllers. The incremental PID control has higher control precision, does not cause larger fluctuation to the ignition advance angle, and ensures the working smoothness of the engine. Meanwhile, the incremental PID control has higher robustness, and the robustness of the engine system can be improved by adopting the incremental PID control as a correction method.
(3) The invention also has a self-learning module. When certain error exists between the gas component and the initial value stored in the control unit, the initial value of the gas component in the EEPROM can be automatically updated to improve the control speed and ensure various running performances of the coke oven gas engine.
Drawings
FIG. 1 is a control block diagram of a coke oven gas engine employing the present invention.
FIG. 2 is a structural schematic diagram of a coke oven gas engine gas component ignition advance angle correction algorithm module based on a methane sensor and a carbon monoxide sensor.
FIG. 3 is a main flow chart of a coke oven gas engine gas component ignition advance angle correction algorithm based on a methane sensor and a carbon monoxide sensor.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a control block diagram of a coke oven gas engine employing the present invention.
The coke oven gas engine is improved on the basis of a gasoline engine, an air supply track is added, and the main components comprise an air bottle, a pressurization valve, a sensor and the like. In the aspect of controlling the ignition advance angle of the coke oven gas engine, on the basis of keeping the original control strategy of the gasoline engine, namely, various ignition advance angle correction values such as basic ignition advance angle, warming-up correction, idle speed stability correction, air-fuel ratio feedback correction, overheating correction, deflagration correction and the like are determined by collecting various signals to determine the working condition of the engine, and then the ignition advance angle correction value influenced by gas components is added.
The control block diagram is added with an ignition advance angle correction algorithm module of the coke oven gas engine based on a methane sensor and a carbon monoxide sensor, which is influenced by gas components, on the basis of the original control strategy, so that various indexes of the coke oven gas engine on in-cylinder combustion are improved, and various performances of the engine in operation are ensured.
FIG. 2 is a structural schematic diagram of a coke oven gas engine gas component ignition advance angle correction algorithm module based on a methane sensor and a carbon monoxide sensor.
The determination of the gas components of the coke oven gas engine mainly refers to the determination of combustible components of the coke oven gas engine, namely methane, carbon monoxide and hydrogen, and because the three combustible components tend to change in a certain range, the amounts of the methane, the carbon monoxide and the hydrogen are respectively corrected through three incremental PID controllers, and finally the correction is shown in the control of the ignition advance angle of the coke oven gas engine.
FIG. 3 is a main flow chart of a coke oven gas engine gas component ignition advance angle correction algorithm based on a methane sensor and a carbon monoxide sensor.
The method comprises the following specific steps:
the first step is as follows: the methane sensor detects the methane component in the fuel gas and determines the volume fraction of methane in the fuel gas
The second step is that: the carbon monoxide sensor detects the carbon monoxide component in the fuel gas and determines the carbon monoxide volume fraction
The third step: obtaining real-time methane volume fraction in fuel gasVolume fraction of carbon monoxideAnd hydrogen volume fractionComparing the initial values of the three components in the EEPROM to obtain an error valueAnd
the fourth step: will be provided withAndrespectively used as input parameters of an incremental PID controller to calculate the corrected value of the ignition advance angle
Wherein, []indicating rounding, superscript indicating successive different times of sampled value, KpRepresents a scaling factor; t isIRepresents integration time in seconds; t isDRepresents differential time in seconds; t denotes the sampling period in seconds.
The fifth step: updatingAndand writing into the EEPROM.
Claims (1)
1. A method for adjusting the ignition advance angle of a coke oven gas engine by component detection is characterized by comprising the following steps:
the first step is as follows: the methane sensor detects the methane component in the fuel gas and determines the volume fraction of methane in the fuel gas
The second step is that: the carbon monoxide sensor detects the carbon monoxide component in the fuel gas and determines the carbon monoxide volume fraction
The third step: obtaining real-time methane volume fraction in fuel gasVolume fraction of carbon monoxideAnd hydrogen volume fractionComparing the initial values of the three components in the EEPROM to obtain an error value And
the fourth step: will be provided withAndrespectively used as input parameters of an incremental PID controller to calculate the corrected value of the ignition advance angle
Wherein
[]Indicating rounding, superscripts 1,2,3 each indicating successive three sample values, KpRepresents a scaling factor; t isIRepresents integration time in seconds; t isDRepresents differential time in seconds; t represents a sampling period and has a unit of second;
the fifth step: updatingAndand writing into the EEPROM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261606.0A CN104033310B (en) | 2014-06-12 | 2014-06-12 | A kind of method being adjusted coke-oven gas engine ignition advance angle by composition detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410261606.0A CN104033310B (en) | 2014-06-12 | 2014-06-12 | A kind of method being adjusted coke-oven gas engine ignition advance angle by composition detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104033310A true CN104033310A (en) | 2014-09-10 |
| CN104033310B CN104033310B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410261606.0A Expired - Fee Related CN104033310B (en) | 2014-06-12 | 2014-06-12 | A kind of method being adjusted coke-oven gas engine ignition advance angle by composition detection |
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| Country | Link |
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| CN (1) | CN104033310B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405509A (en) * | 2014-10-21 | 2015-03-11 | 浙江大学 | Online combustible gas mixing method of gas engine |
| CN105569851A (en) * | 2015-12-23 | 2016-05-11 | 北汽福田汽车股份有限公司 | Method and device for calibrating gaseous propellant engine |
| CN108757264A (en) * | 2018-04-26 | 2018-11-06 | 杭州电子科技大学 | A method of obtaining coke-oven gas engine Optimum spark advance angle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100229524A1 (en) * | 2009-03-10 | 2010-09-16 | General Electric Company | Low heating value fuel gas blending control |
| CN102383949A (en) * | 2011-10-25 | 2012-03-21 | 王旭光 | Fuel switching controller of coke oven gas gasoline automobile |
| CN103047035A (en) * | 2012-12-13 | 2013-04-17 | 浙江大学 | Coke-oven gas engine self-adaption air-fuel ratio control method based on UEGO (Universal Exhaust Gas Oxygen) |
-
2014
- 2014-06-12 CN CN201410261606.0A patent/CN104033310B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100229524A1 (en) * | 2009-03-10 | 2010-09-16 | General Electric Company | Low heating value fuel gas blending control |
| CN102383949A (en) * | 2011-10-25 | 2012-03-21 | 王旭光 | Fuel switching controller of coke oven gas gasoline automobile |
| CN103047035A (en) * | 2012-12-13 | 2013-04-17 | 浙江大学 | Coke-oven gas engine self-adaption air-fuel ratio control method based on UEGO (Universal Exhaust Gas Oxygen) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405509A (en) * | 2014-10-21 | 2015-03-11 | 浙江大学 | Online combustible gas mixing method of gas engine |
| CN105569851A (en) * | 2015-12-23 | 2016-05-11 | 北汽福田汽车股份有限公司 | Method and device for calibrating gaseous propellant engine |
| CN105569851B (en) * | 2015-12-23 | 2018-08-07 | 北汽福田汽车股份有限公司 | Method and apparatus for marked gas engine fuel |
| CN108757264A (en) * | 2018-04-26 | 2018-11-06 | 杭州电子科技大学 | A method of obtaining coke-oven gas engine Optimum spark advance angle |
| CN108757264B (en) * | 2018-04-26 | 2019-12-10 | 杭州电子科技大学 | Method for obtaining optimal ignition advance angle of coke oven gas engine |
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| Publication number | Publication date |
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| CN104033310B (en) | 2015-10-21 |
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