CN109944684B - Hydrogen-oxygen rotor engine and control method - Google Patents
Hydrogen-oxygen rotor engine and control method Download PDFInfo
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- CN109944684B CN109944684B CN201910182301.3A CN201910182301A CN109944684B CN 109944684 B CN109944684 B CN 109944684B CN 201910182301 A CN201910182301 A CN 201910182301A CN 109944684 B CN109944684 B CN 109944684B
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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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- 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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Abstract
The invention designs an oxyhydrogen rotary engine and a control method. The invention takes the rotor position signal and the in-cylinder pressure rise rate as the basis, adjusts the injection time and the injection quantity of the hydrogen and the oxygen which are injected into the combustion chamber through the hydrogen flow controller and the oxygen flow controller, eliminates the air pumping loss of the air throttle of the rotor machine, solves the problem of air inlet channel tempering in the combustion process of the rotor machine and enables the mixed gas of the hydrogen and the oxygen in the cylinder to be economically combusted. The invention eliminates the emission generated in the operation process of the prior rotor machine and realizes the zero emission of pollutants.
Description
Technical Field
The invention provides a hydrogen-oxygen rotary engine and a control method thereof. Relates to the fuel supply and combustion optimization of a rotor engine, and belongs to the field of internal combustion engines.
Background
With the environmental problem being more and more paid attention by the people, the pollution monitoring of each country is more and more strict. The emission of automobile exhaust is also pushed to the foreground in the environment, and related regulations are successively pushed by various countries to limit the emission of automobile exhaust. Therefore, reducing engine fuel consumption and emissions has become the mainstream direction of research in the field of internal combustion engines at present. Hydrogen-oxygen rotor engine and control method
Compared with a reciprocating piston engine, the rotor engine has the advantages of small volume, light weight, simple structure, large power-to-weight ratio and the like, and the rotor engine is widely applied to the fields of unmanned aerial vehicles, military special vehicles, naval land battle landing boats, small ships, portable generators and the like in all countries in the world. However, the rotor machine also has the problems of poor fuel economy, high emission and the like, and the main reasons for the problems are that the long and narrow combustion chamber structure of the rotor machine is not favorable for quick and complete combustion of fuel, the problem that wall surface quenching is increased due to high surface-to-volume ratio, the high air leakage rate due to the linear sealing mode and the like. With the stricter emission regulations, the rotary engine also faces the problems of energy conservation and emission reduction.
The hydrogen gas only generates water in the pure oxygen atmosphere, and does not generate discharge products harmful to the environment. Therefore, the invention provides an oxyhydrogen rotary engine and a control method thereof, which further avoid the problem of pre-ignition and backfire of the rotary engine on the basis of eliminating the pumping loss of an air inlet channel and realizing zero emission of the rotary engine.
Disclosure of Invention
In order to solve the problem of high emission of the rotary engine, the invention provides the oxyhydrogen rotary engine and the control method thereof, and the problem of early combustion and backfire of the rotary engine is further avoided on the basis of eliminating the pumping loss of an air inlet and realizing zero emission of the rotary engine.
The invention adopts the following technical scheme:
the hydrogen cylinder (1), the hydrogen cylinder pressure reducing valve (2), the hydrogen flow controller (3), the flame retardant valve (4) and the hydrogen nozzle (6) are connected in series with the rotor machine (8) through a hydrogen pipeline (5); the oxygen cylinder (15), the oxygen cylinder pressure reducing valve (14), the oxygen flow controller (13) and the oxygen nozzle (11) are connected in series with the rotor machine (8) through an oxygen pipeline (12); a spark plug (7) is arranged on the rotor machine (8), and a rotor (9) is arranged in the rotor machine (8); the exhaust pipeline (16) is connected with the rotor machine (8) in series; and the electric control unit (10) receives the rotor position signal m and the in-cylinder pressure rise rate signal n, and controls the hydrogen and oxygen injection and the ignition of the spark plug (7) through the hydrogen flow signal (a), the oxygen flow signal (e), the hydrogen nozzle signal (b), the oxygen signal nozzle (d) and the spark plug signal (c).
With the engine as described above, characterized in that:
after the rotor engine works, the electronic control unit (10) receives the position signal m and the in-cylinder pressure rise rate signal n. When the pressure rise rate in the cylinder is not higher than 0.2 MPa/degree CA and the rotation angle of the crankshaft of the rotor (9) is a certain angle between 470 degrees before top dead center and 270 degrees before top dead center, the electric control unit (10) opens the oxygen nozzle (11) and closes the hydrogen nozzle (6) to spray oxygen into the cylinder; when the pressure rise rate in the cylinder is not higher than 0.2 MPa/degree CA and the crank angle of the rotor (9) is an angle between 270 degrees before top dead center and top dead center, the electric control unit (10) closes the oxygen nozzle (11), opens the hydrogen nozzle (6) to spray hydrogen into the cylinder, controls the spark plug (7) to ignite the mixed gas, and discharges the gas generated by combustion along with the exhaust pipeline (16).
After the rotor engine works, the electronic control unit (10) receives the position signal m and the in-cylinder pressure rise rate signal n. When the pressure rise rate in the cylinder is higher than 0.2 MPa/degree CA and the rotation angle of a crankshaft of the rotor (9) is an angle between 470 degrees before top dead center and 270 degrees before top dead center, the electric control unit (10) opens the oxygen nozzle (11) and closes the hydrogen nozzle (6) to spray oxygen into the cylinder; when the pressure rise rate in the cylinder is higher than 0.2 MPa/CA and the crank angle of the rotor (9) is an angle between 270 degrees before top dead center and top dead center, the electronic control unit (10) adjusts the hydrogen nozzle (6) to reduce the amount of hydrogen sprayed into the cylinder according to a certain speed L, wherein L is any value within the range that L is more than 0 and less than or equal to 20L/min, and controls the spark plug (7) to ignite the mixed gas until the pressure rise rate of the engine is not higher than 0.2 MPa/CA, the electronic control unit (10) stops continuously reducing the amount of hydrogen and keeps the current amount of hydrogen, controls the spark plug (7) to ignite the mixed gas, and controls the gas generated by combustion to be discharged along with the exhaust pipeline (16).
Drawings
FIG. 1 is a structural and operational schematic diagram of the present invention
In the figure: 1. a hydrogen cylinder, 2, a hydrogen cylinder pressure reducing valve, 3, a hydrogen flow controller, 4, a flame retardant valve 5, a hydrogen pipeline, 6, a hydrogen nozzle, 7, a spark plug, 8 a rotor machine, 9 a rotor, 10 an electric control unit, 11, an oxygen nozzle, 12 an oxygen pipeline, 13, an oxygen flow controller, 14, an oxygen cylinder pressure reducing valve, 15, an oxygen cylinder, 16, an exhaust pipeline, a hydrogen flow signal (a), a hydrogen nozzle signal (b), a spark plug signal (c), an oxygen signal nozzle (d), an oxygen flow signal (e), a rotor position signal m, an in-cylinder pressure rise rate signal n,
Detailed Description
The invention is further described with reference to the following figures and detailed description:
after the rotor engine works, the electronic control unit (10) receives the position signal m and the in-cylinder pressure rise rate signal n. When the pressure rise rate in the cylinder is not higher than 0.2 MPa/degree CA and the crank angle of the rotor (9) is a certain angle between 470 degrees before top dead center and 270 degrees before top dead center, the mixed gas in the cylinder is considered to be normally combusted, oxygen can be injected in the air intake process, and hydrogen is injected in the compression process. Therefore, the electric control unit (10) opens the oxygen nozzle (11) and closes the hydrogen nozzle (6) to spray oxygen into the cylinder; because the air inlet part of the invention is not provided with an air inlet pipe and a throttle valve, the scheme avoids pumping loss in the air inlet process of the engine. When the pressure rise rate in the cylinder is not higher than 0.2 MPa/degree CA and the crank angle of the rotor (9) is an angle between 270 degrees before the top dead center and the top dead center, the electric control unit (10) closes the oxygen nozzle (11) and opens the hydrogen nozzle (6) to spray hydrogen into the cylinder. In this case, since the hydrogen and oxygen are injected into the cylinder separately at different strokes, this solution avoids the possible problems of pre-ignition and flashback. Then, the electronic control unit (10) controls the spark plug (7) to ignite the mixed gas, and gas generated by combustion is discharged along with the exhaust pipeline (16).
After the rotor engine works, the electronic control unit (10) receives the position signal m and the in-cylinder pressure rise rate signal n. When the pressure rise rate in the cylinder is higher than 0.2 MPa/degree CA and the crank angle of the rotor (9) is an angle between 470 degrees before top dead center and 270 degrees before top dead center, the mixed gas in the cylinder is considered to be roughly combusted, the amount of oxygen injected in the air intake process can be maintained, and the amount of hydrogen injected in the compression process is reduced. Therefore, the electric control unit (10) opens the oxygen nozzle (11) and closes the hydrogen nozzle (6) to spray oxygen into the cylinder; when the pressure rise rate in the cylinder is higher than 0.2 MPa/CA and the crank angle of the rotor (9) is an angle between 270 degrees before top dead center and top dead center, the electronic control unit (10) adjusts the hydrogen nozzle (6) to reduce the amount of hydrogen sprayed into the cylinder according to a certain speed L, wherein L is any value within the range that L is more than 0 and less than or equal to 20L/min, and controls the spark plug (7) to ignite the mixed gas until the pressure rise rate of the engine is not higher than 0.2 MPa/CA, the electronic control unit (10) stops continuously reducing the amount of hydrogen and keeps the current amount of hydrogen, controls the spark plug (7) to ignite the mixed gas, and controls the gas generated by combustion to be discharged along with the exhaust pipeline (16).
Claims (1)
1. A control method of a hydrogen-oxygen rotary engine, the engine comprising: the hydrogen cylinder (1), the hydrogen cylinder pressure reducing valve (2), the hydrogen flow controller (3), the flame retardant valve (4) and the hydrogen nozzle (6) are connected in series with the rotor machine (8) through a hydrogen pipeline (5); the oxygen cylinder (15), the oxygen cylinder pressure reducing valve (14), the oxygen flow controller (13) and the oxygen nozzle (11) are connected in series with the rotor machine (8) through an oxygen pipeline (12); a spark plug (7) is arranged on the rotor machine (8), and a rotor (9) is arranged in the rotor machine (8); the exhaust pipeline (16) is connected with the rotor machine (8) in series; the electronic control unit (10) controls the injection of hydrogen and oxygen and the ignition of the spark plug (7) through a hydrogen flow signal (a), an oxygen flow signal (e), a hydrogen nozzle signal (b), an oxygen signal nozzle (d) and a spark plug signal (c);
the method is characterized in that:
after the rotor engine works, the electronic control unit (10) receives a position signal m and a cylinder internal pressure rise rate signal n;
when the pressure rise rate in the cylinder is not higher than 0.2 MPa/degree CA and the rotation angle of the crankshaft of the rotor (9) is a certain angle between 470 degrees before top dead center and 270 degrees before top dead center, the electric control unit (10) opens the oxygen nozzle (11) and closes the hydrogen nozzle (6) to spray oxygen into the cylinder; when the pressure rise rate in the cylinder is not higher than 0.2 MPa/degree CA and the rotation angle of a crankshaft of the rotor (9) is an angle between 270 degrees before the top dead center and the top dead center, the electric control unit (10) closes the oxygen nozzle (11), opens the hydrogen nozzle (6) to spray hydrogen into the cylinder, controls the spark plug (7) to ignite mixed gas, and discharges the gas generated by combustion along with the exhaust pipeline (16);
when the pressure rise rate in the cylinder is higher than 0.2 MPa/degree CA and the rotation angle of a crankshaft of the rotor (9) is an angle between 470 degrees before top dead center and 270 degrees before top dead center, the electric control unit (10) opens the oxygen nozzle (11) and closes the hydrogen nozzle (6) to spray oxygen into the cylinder; when the pressure rise rate in the cylinder is higher than 0.2 MPa/CA and the crank angle of the rotor (9) is an angle between 270 degrees before top dead center and top dead center, the electronic control unit (10) adjusts the hydrogen nozzle (6) to reduce the amount of hydrogen sprayed into the cylinder according to a certain speed L, wherein L is any value within the range that L is more than 0 and less than or equal to 20L/min, and controls the spark plug (7) to ignite the mixed gas until the pressure rise rate of the engine is not higher than 0.2 MPa/CA, the electronic control unit (10) stops continuously reducing the amount of hydrogen and keeps the current amount of hydrogen, controls the spark plug (7) to ignite the mixed gas, and controls the gas generated by combustion to be discharged along with the exhaust pipeline (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910182301.3A CN109944684B (en) | 2019-03-07 | 2019-03-07 | Hydrogen-oxygen rotor engine and control method |
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| CN109944684B true CN109944684B (en) | 2020-11-06 |
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| CN110529321A (en) * | 2019-08-19 | 2019-12-03 | 北京工业大学 | A kind of cylinder is interior to spray hydrogen rotator electromechanical control ignition control method |
| CN113513418B (en) * | 2021-06-28 | 2022-06-24 | 北京工业大学 | Control method of non-backfire hydrogen-ammonia dual-fuel zero-carbon rotor machine |
| CN113586267B (en) * | 2021-07-25 | 2022-11-29 | 北京工业大学 | Control method for rotary engine without throttle valve |
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| WO2009029525A1 (en) * | 2007-08-24 | 2009-03-05 | Abet Technologies, Llc | Hydrogen peroxide-fueled rotary expansion engine |
| CN101718221A (en) * | 2009-12-18 | 2010-06-02 | 奇瑞汽车股份有限公司 | Application of hydrogen fuel and rotary engine thereof |
| JP2014185593A (en) * | 2013-03-25 | 2014-10-02 | Mazda Motor Corp | Fuel injection device of hydrogen rotary engine |
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| WO2017191222A1 (en) * | 2016-05-03 | 2017-11-09 | Andrew Cassidy | An oxyhydrogen gas fuelled power system and a control system and method for operating the same |
| CN108825366A (en) * | 2018-06-15 | 2018-11-16 | 北京工业大学 | A kind of spark ignition type oxyhydrogen rotary engine and control method |
| CN109404123A (en) * | 2018-12-30 | 2019-03-01 | 北京工业大学 | A kind of hydrogen in-cylinder direct-jet rotor machine and its control method |
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2019
- 2019-03-07 CN CN201910182301.3A patent/CN109944684B/en active Active
Patent Citations (9)
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| DE20306866U1 (en) * | 2003-04-28 | 2003-07-31 | Bernau Klaus Juergen | Rotary swing piston motor, using an oxyhydrogen fuel mixture, has a center pressure zone at the rotor and structured piston shapes to seal their swing chambers on a maximum possible swing angle |
| WO2009029525A1 (en) * | 2007-08-24 | 2009-03-05 | Abet Technologies, Llc | Hydrogen peroxide-fueled rotary expansion engine |
| CN101718221A (en) * | 2009-12-18 | 2010-06-02 | 奇瑞汽车股份有限公司 | Application of hydrogen fuel and rotary engine thereof |
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| CN109404123A (en) * | 2018-12-30 | 2019-03-01 | 北京工业大学 | A kind of hydrogen in-cylinder direct-jet rotor machine and its control method |
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