CN116927982A - Fuel low-pressure two-stage mixing device for hydrogen internal combustion engine and control method - Google Patents
Fuel low-pressure two-stage mixing device for hydrogen internal combustion engine and control method Download PDFInfo
- Publication number
- CN116927982A CN116927982A CN202310653143.1A CN202310653143A CN116927982A CN 116927982 A CN116927982 A CN 116927982A CN 202310653143 A CN202310653143 A CN 202310653143A CN 116927982 A CN116927982 A CN 116927982A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- air
- engine
- pressure
- electric control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 247
- 239000001257 hydrogen Substances 0.000 title claims abstract description 245
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 245
- 239000000446 fuel Substances 0.000 title claims abstract description 75
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 238000004880 explosion Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 3
- 230000001276 controlling effect Effects 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000005496 tempering Methods 0.000 abstract description 3
- 238000005984 hydrogenation reaction Methods 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
- F02M21/047—Venturi mixer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0027—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures the fuel being gaseous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a fuel low-pressure double-stage mixing device of a hydrogen internal combustion engine and a control method, wherein the device is suitable for a large-cylinder-diameter medium-speed hydrogen internal combustion engine for fixed power generation and comprises a hydrogen supply module, an Engine Control Unit (ECU), an electric control mixer, a hydrogen injector and an air-fuel ratio sensor; the hydrogen supply module supplies hydrogen to the electric control mixer and the hydrogen injector; the electric control mixer is a Venturi mixer, so that primary mixing of hydrogen and air is realized; in the working process of the engine, the ECU controls the hydrogen injection quantity of the hydrogen injector to the air inlet channel according to the feedback of the actually measured air-fuel ratio, and realizes the secondary mixing of fuel in the air inlet channel with the mixed gas of the hydrogen and the air, and simultaneously meets the power and load requirements of the engine. The device adopts a low-pressure two-stage mixing method to realize low-pressure gradual hydrogenation, prevent the tempering of the air inlet pipe, reduce the injection pressure of the hydrogen injector and improve the safety of hydrogen combustion.
Description
Technical Field
The invention relates to the field of internal combustion engines, in particular to a low-pressure two-stage mixing device for a hydrogen internal combustion engine fuel and a control method.
Background
The hydrogen internal combustion engine is an engine using hydrogen as fuel, most parts of the engine are the same as gasoline engines and diesel engines, the requirement on the purity of hydrogen in the combustion process is low, and industrial byproduct hydrogen can be directly used as fuel, so that the production and use costs are low. Compared with direct injection in a cylinder, the fuel injection in an air inlet channel of the hydrogen internal combustion engine has low technical difficulty, can realize accurate fuel supply, has good combustion characteristics, and is the most commonly used hydrogen supply mode of the hydrogen internal combustion engine at present (Gerrit Kiesgen, manfred Klving, christion Bock. The new 12-cylinder hydrogen engine in series: the H) 2 ICE age has begun[C]SAE Paper 2006-01-0431.). However, the large-cylinder-diameter medium-speed hydrogen internal combustion engine for fixed power generation still has the tempering problem and potential safety hazard caused by high hydrogen injection pressure. Therefore, there is a need to develop a hydrogen internal combustion engine fuel supply technology to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a low-pressure double-stage mixing device for a fuel of a hydrogen internal combustion engine and a control method thereof, so as to solve the tempering problem of the existing hydrogen internal combustion engine and the potential safety hazard caused by overhigh hydrogen injection pressure.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the invention provides a low-pressure double-stage mixing device for fuel of a hydrogen internal combustion engine, which adopts a double-stage mixing method to realize the mixing of low-pressure hydrogen and air, and comprises the following components: a hydrogen supply module, an engine control unit ECU12, an electric control mixer 8, an air-fuel ratio sensor 11, and a hydrogen injector 14;
the hydrogen supply module includes: a hydrogen storage tank 1, a ball valve 2, a pressure stabilizing valve 3, a hydrogen flowmeter 4, a hydrogen supply pipeline 5, a zero pressure valve 6 and a hydrogen track 7; the hydrogen storage tank 1 of the hydrogen supply module is communicated with the electric control mixer 8 through a hydrogen supply pipeline 5, the hydrogen storage tank 1 is communicated with a hydrogen rail 7 through the hydrogen supply pipeline 5, and the hydrogen rail 7 is communicated with a hydrogen injector 14; the two hydrogen flow meters 4 are respectively arranged on a hydrogen supply pipeline 5 between the hydrogen storage tank 1 and the electric control mixer 8 and on the hydrogen supply pipeline 5 between the hydrogen storage tank 1 and the hydrogen track 7, the zero-pressure valve 6 is arranged on the hydrogen supply pipeline 5 between the electric control mixer 8 and the hydrogen flow meter 4, and the zero-pressure valve 6 arranged between the electric control mixer 8 and the hydrogen flow meter 4 provides the electric control mixer 8 with the same pressure as the external environment; the ball valve 2 is arranged on a hydrogen supply pipeline 5 between the hydrogen storage tank 1 and the two hydrogen flow meters 4, and the pressure stabilizing valve 3 is arranged on the hydrogen supply pipeline 5 between the ball valve 2 and the two hydrogen flow meters 4 to play a role in stabilizing the hydrogen pressure;
the hydrogen rail 7 is provided with more than two air outlet ends which are respectively connected with the hydrogen ejectors 14 in a one-to-one correspondence manner, and the hydrogen in the hydrogen rail 7 is ejected into the air inlet channel 13 of each engine through the hydrogen ejectors 14;
the electric control mixer 8 is communicated with the air inlet channel 13 through the air supply pipeline 9 and the air supply rail 10, and the mixed gas of the air and the hydrogen in the electric control mixer 8 is conveyed to the air inlet channel 13 of each engine through the air supply pipeline 9 and the air supply rail 10;
the air-fuel ratio sensor 11 is installed in an exhaust passage of each engine for monitoring an air-fuel ratio of the engine and feeding it back to the engine control module ECU12;
the engine control module ECU12 is respectively and electrically connected with each air-fuel ratio sensor 11, each hydrogen injector 14 and the electric control mixer 8, and in the working process of the engine, the engine control module ECU12 controls the hydrogen injection quantity of the hydrogen injector 14 according to the feedback of the actually measured air-fuel ratio.
Further, the electric control mixer 8 is a venturi mixer, so that the mixing concentration is ensured to be lower than the lower explosion limit of hydrogen.
Further, the zero-pressure valve provides the same pressure as the external environment to the electronically controlled mixer.
Further, the pressure of the hydrogen sprayed by the hydrogen sprayer is less than 0.3MPa.
The invention also provides a fuel low-pressure two-stage hybrid control method for the hydrogen internal combustion engine, which is characterized by comprising the following specific steps of:
step one: calibrating a power and air-fuel ratio MAP when the engine works, and determining a target air-fuel ratio of the current engine according to the power requirement of the current engine work;
step two: the actual air-fuel ratio signal of the engine is fed back to the engine control module ECU12 through the air-fuel ratio sensor 11 arranged on the exhaust passage, and is compared with the target air-fuel ratio, and the amount of hydrogen injected into the cylinder by the hydrogen injector 14 is regulated and controlled through the engine control module ECU12 so as to reach the target air-fuel ratio; in this process, the mixing concentration of the hydrogen and the air in the electric control mixer 8 is unchanged and is less than the explosion lower limit of the hydrogen. Therefore, compared with the prior art, the low-pressure double-stage mixing device and the control method for the fuel of the hydrogen internal combustion engine have the following characteristics:
(1) The low-pressure double-stage mixing device and the control method for the fuel of the hydrogen internal combustion engine reduce the low-pressure injection of the hydrogen injector and avoid the potential safety hazard caused by the high-pressure injection of the hydrogen.
(2) The low-pressure two-stage mixing device and the control method for the hydrogen internal combustion engine fuel can effectively promote uniform mixing of hydrogen and air, and have important significance in preventing backfire and improving the combustion process of the engine.
(3) The low-pressure two-stage mixing device and the control method for the fuel of the hydrogen internal combustion engine are used for fixing the large-cylinder-diameter medium-speed hydrogen internal combustion engine for power generation, and are widely applicable to byproduct hydrogen in the fields of chemical industry and the like.
Drawings
FIG. 1 is a schematic diagram of a fuel low pressure two-stage mixing device for a hydrogen internal combustion engine according to the present invention.
As shown in the figure: 1. a hydrogen storage tank; 2. a ball valve; 3. a pressure stabilizing valve; 4. a hydrogen flow meter; 5. a hydrogen supply line; 6. a zero pressure valve; 7. a hydrogen orbit; 8. an electric control mixer; 9. an air supply line; 10. a gas supply rail; 11. an air-fuel ratio sensor; 12. an Electronic Control Unit (ECU); 13. an air inlet channel; 14. a hydrogen injector.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a hydrogen internal combustion engine fuel low pressure two-stage mixing device, comprising a hydrogen supply module, an Engine Control Unit (ECU) 12, an electric control mixer 8, two or more air-fuel ratio sensors 11, and two or more hydrogen injectors 14;
the hydrogen supply module includes: a hydrogen storage tank 1, a ball valve 2, a pressure stabilizing valve 3, a hydrogen flowmeter 4, a hydrogen supply pipeline 5, a zero pressure valve 6 and a hydrogen track 7; the hydrogen storage tank 1 of the hydrogen supply module is communicated with the electric control mixer 8 through a hydrogen supply pipeline 5, the hydrogen storage tank 1 is communicated with a hydrogen rail 7 through the hydrogen supply pipeline 5, and the hydrogen rail 7 is communicated with a hydrogen injector 14; the two hydrogen flow meters 4 are respectively arranged on a hydrogen supply pipeline 5 between the hydrogen storage tank 1 and the electric control mixer 8 and on the hydrogen supply pipeline 5 between the hydrogen storage tank 1 and the hydrogen track 7, the zero-pressure valve 6 is arranged on the hydrogen supply pipeline 5 between the electric control mixer 8 and the hydrogen flow meter 4, and the zero-pressure valve 6 arranged between the electric control mixer 8 and the hydrogen flow meter 4 provides the electric control mixer 8 with the same pressure as the external environment; the ball valve 2 is arranged on a hydrogen supply pipeline 5 between the hydrogen storage tank 1 and the two hydrogen flow meters 4, and the pressure stabilizing valve 3 is arranged on the hydrogen supply pipeline 5 between the ball valve 2 and the two hydrogen flow meters 4, so as to play a role in stabilizing the hydrogen pressure.
The hydrogen rail 7 is provided with more than two air outlet ends which are respectively connected with the hydrogen ejectors 14 in a one-to-one correspondence manner, and the hydrogen in the hydrogen rail 7 is ejected into the air inlet channel 13 of each engine through the hydrogen ejectors 14.
The electric control mixer 8 is communicated with the air inlet channel 13 through the air supply pipeline 9 and the air supply rail 10, and the mixed gas of the air and the hydrogen in the electric control mixer 8 is conveyed to the air inlet channel 13 of each engine through the air supply pipeline 9 and the air supply rail 10.
The air-fuel ratio sensor 11 is installed in an exhaust passage of each engine for monitoring an air-fuel ratio of the engine and feeding it back to an engine control module (ECU) 12.
The engine control module (ECU) 12 is electrically connected with each air-fuel ratio sensor 11, each hydrogen injector 14 and the electric control mixer 8, and during the engine operation, the engine control module (ECU) 12 controls the hydrogen injection amount of the hydrogen injector 14 according to the feedback of the actually measured air-fuel ratio.
The hydrogen internal combustion engine fuel mixing device can realize low-pressure double-stage mixing, and the hydrogen and the air realize primary mixing in the electric control mixer 8; the mixture of the hydrogen and the air flows into the air inlet channel 13 through the air supply pipeline 9 and the air supply rail 10; the hydrogen in the hydrogen track 7 is sprayed into the air inlet channel 13 of each engine through the hydrogen injector 14, and the hydrogen and air mixture are mixed for the second stage. The two-stage mixed injection method can effectively reduce the injection pressure of the hydrogen injector 14, effectively avoid backfire of the engine, improve the safety of the engine and achieve the design purpose.
The invention provides a hydrogen internal combustion engine fuel low-pressure two-stage mixing control method, which comprises the following specific control processes:
step one: and calibrating the power and air-fuel ratio MAP when the engine works, and determining the target air-fuel ratio of the current engine according to the power requirement of the current engine.
Step two: the actual air-fuel ratio signal of the engine is fed back to the engine control module (ECU) 12 through the air-fuel ratio sensor 11 mounted on the exhaust passage, and is compared with the target air-fuel ratio, and the amount of hydrogen injected into the cylinder by the hydrogen injector 14 is regulated by the engine control module (ECU) 12 to achieve the target air-fuel ratio. In this process, the mixing concentration of the hydrogen and the air in the electric control mixer 8 is unchanged and is less than the explosion lower limit of the hydrogen.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. A low pressure, dual stage mixing device for a hydrogen internal combustion engine fuel, wherein a dual stage mixing method is employed to achieve mixing of low pressure hydrogen and air, the mixing device comprising: a hydrogen supply module, an engine control unit ECU (12), an electric control mixer (8), an air-fuel ratio sensor (11), and a hydrogen injector (14);
the hydrogen supply module includes: the device comprises a hydrogen storage tank (1), a ball valve (2), a pressure stabilizing valve (3), a hydrogen flowmeter (4), a hydrogen supply pipeline (5), a zero pressure valve (6) and a hydrogen track (7); the hydrogen storage tank (1) of the hydrogen supply module is communicated with the electric control mixer (8) through a hydrogen supply pipeline (5), the hydrogen storage tank (1) is communicated with the hydrogen rail (7) through the hydrogen supply pipeline (5), and the hydrogen rail (7) is communicated with the hydrogen injector (14); the two hydrogen flow meters (4) are respectively arranged on a hydrogen supply pipeline (5) between the hydrogen storage tank (1) and the electric control mixer (8) and on the hydrogen supply pipeline (5) between the hydrogen storage tank (1) and the hydrogen track (7), the zero pressure valve (6) is arranged on the hydrogen supply pipeline (5) between the electric control mixer (8) and the hydrogen flow meter (4), and the zero pressure valve (6) arranged between the electric control mixer (8) and the hydrogen flow meter (4) provides the electric control mixer (8) with the same pressure as the external environment; the ball valve (2) is arranged on a hydrogen supply pipeline (5) between the hydrogen storage tank (1) and the two hydrogen flow meters (4), and the pressure stabilizing valve (3) is arranged on the hydrogen supply pipeline (5) between the ball valve (2) and the two hydrogen flow meters (4) to play a role in stabilizing the hydrogen pressure;
the hydrogen rail (7) is provided with more than two air outlet ends which are respectively connected with the hydrogen ejectors (14) in a one-to-one correspondence manner, and the hydrogen in the hydrogen rail (7) is ejected into an air inlet channel (13) of each engine through the hydrogen ejectors (14);
the electric control mixer (8) is communicated with the air inlet channel (13) through the air supply pipeline (9) and the air supply track (10), and the mixed gas of the air and the hydrogen in the electric control mixer (8) is conveyed to the air inlet channel (13) of each engine through the air supply pipeline (9) and the air supply track (10);
the air-fuel ratio sensor (11) is arranged in an exhaust passage of each engine and is used for monitoring the air-fuel ratio of the engine and feeding the air-fuel ratio back to the engine control module ECU (12);
the engine control module ECU (12) is respectively and electrically connected with each air-fuel ratio sensor (11), each hydrogen injector (14) and the electric control mixer (8), and in the working process of the engine, the engine control module ECU (12) controls the hydrogen injection quantity of the hydrogen injector (14) according to the feedback of the actually measured air-fuel ratio.
2. The low-pressure two-stage mixing device for hydrogen internal combustion engine fuel according to claim 1, wherein the electric control mixer (8) is a venturi mixer, ensuring that the mixing concentration thereof is lower than the lower explosion limit of hydrogen.
3. The hydrogen internal combustion engine fuel low pressure dual stage mixing device according to claim 1, wherein said zero pressure valve provides the same pressure as the external environment to the electronically controlled mixer.
4. The hydrogen internal combustion engine fuel low pressure two stage mixing device according to claim 1, wherein the pressure of the hydrogen gas injected from the hydrogen injector is less than 0.3MPa.
5. A hydrogen internal combustion engine fuel low pressure two-stage mixing control method using the hydrogen internal combustion engine fuel low pressure two-stage mixing device according to any one of claims 1 to 4, characterized by the specific steps of:
step one: calibrating a power and air-fuel ratio MAP when the engine works, and determining a target air-fuel ratio of the current engine according to the power requirement of the current engine work;
step two: the actual air-fuel ratio signal of the engine is fed back to the engine control module ECU (12) through the air-fuel ratio sensor (11) arranged on the exhaust passage and is compared with the target air-fuel ratio, and the amount of hydrogen injected into the cylinder by the hydrogen injector (14) is regulated and controlled through the engine control module ECU12 so as to reach the target air-fuel ratio; in the process, the mixing concentration of the hydrogen and the air in the electric control mixer (8) is unchanged and is smaller than the explosion lower limit of the hydrogen.
6. The hydrogen internal combustion engine fuel low pressure two-stage mixing control method according to claim 5, wherein said hydrogen internal combustion engine fuel low pressure two-stage mixing device comprises: a hydrogen supply module, an engine control unit ECU (12), an electric control mixer (8), an air-fuel ratio sensor (11), and a hydrogen injector (14);
the hydrogen supply module includes: the device comprises a hydrogen storage tank (1), a ball valve (2), a pressure stabilizing valve (3), a hydrogen flowmeter (4), a hydrogen supply pipeline (5), a zero pressure valve (6) and a hydrogen track (7); the hydrogen storage tank (1) of the hydrogen supply module is communicated with the electric control mixer (8) through a hydrogen supply pipeline (5), the hydrogen storage tank (1) is communicated with the hydrogen rail (7) through the hydrogen supply pipeline (5), and the hydrogen rail (7) is communicated with the hydrogen injector (14); the two hydrogen flow meters (4) are respectively arranged on a hydrogen supply pipeline (5) between the hydrogen storage tank (1) and the electric control mixer (8) and on the hydrogen supply pipeline (5) between the hydrogen storage tank (1) and the hydrogen track (7), the zero pressure valve (6) is arranged on the hydrogen supply pipeline (5) between the electric control mixer (8) and the hydrogen flow meter (4), and the zero pressure valve (6) arranged between the electric control mixer (8) and the hydrogen flow meter (4) provides the electric control mixer (8) with the same pressure as the external environment; the ball valve (2) is arranged on a hydrogen supply pipeline (5) between the hydrogen storage tank (1) and the two hydrogen flow meters (4), and the pressure stabilizing valve (3) is arranged on the hydrogen supply pipeline (5) between the ball valve (2) and the two hydrogen flow meters (4) to play a role in stabilizing the hydrogen pressure;
the hydrogen rail (7) is provided with more than two air outlet ends which are respectively connected with the hydrogen ejectors (14) in a one-to-one correspondence manner, and the hydrogen in the hydrogen rail (7) is ejected into an air inlet channel (13) of each engine through the hydrogen ejectors (14);
the electric control mixer (8) is communicated with the air inlet channel (13) through the air supply pipeline (9) and the air supply track (10), and the mixed gas of the air and the hydrogen in the electric control mixer (8) is conveyed to the air inlet channel (13) of each engine through the air supply pipeline (9) and the air supply track (10);
the air-fuel ratio sensor (11) is arranged in an exhaust passage of each engine and is used for monitoring the air-fuel ratio of the engine and feeding the air-fuel ratio back to the engine control module ECU (12);
the engine control module ECU (12) is respectively and electrically connected with each air-fuel ratio sensor (11), each hydrogen injector (14) and the electric control mixer (8), and in the working process of the engine, the engine control module ECU (12) controls the hydrogen injection quantity of the hydrogen injector (14) according to the feedback of the actually measured air-fuel ratio.
7. The fuel low-pressure two-stage mixing control method for hydrogen internal combustion engine according to claim 6, wherein the electric control mixer (8) is a venturi mixer, and ensures that the mixing concentration is lower than the lower explosion limit of hydrogen.
8. The hydrogen internal combustion engine fuel low pressure two stage mixing control method according to claim 6, wherein said zero pressure valve supplies the same pressure as the external environment to the electric control mixer.
9. The method for controlling fuel low pressure two-stage mixing of hydrogen internal combustion engine according to claim 6, wherein the pressure of the hydrogen gas injected from the hydrogen injector is less than 0.3MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310653143.1A CN116927982A (en) | 2023-06-05 | 2023-06-05 | Fuel low-pressure two-stage mixing device for hydrogen internal combustion engine and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310653143.1A CN116927982A (en) | 2023-06-05 | 2023-06-05 | Fuel low-pressure two-stage mixing device for hydrogen internal combustion engine and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116927982A true CN116927982A (en) | 2023-10-24 |
Family
ID=88379535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310653143.1A Pending CN116927982A (en) | 2023-06-05 | 2023-06-05 | Fuel low-pressure two-stage mixing device for hydrogen internal combustion engine and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116927982A (en) |
-
2023
- 2023-06-05 CN CN202310653143.1A patent/CN116927982A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104121102B (en) | The diesel oil ignited direct-jet natural gas engine fuel supply system of trace and controlling method | |
| US9334812B2 (en) | Fuel supply control system for multi-fuel internal combustion engine | |
| US9976526B2 (en) | Gaseous metering control for dual fluid injector | |
| US10184440B2 (en) | Multi-fuel delivery system | |
| US20120085322A1 (en) | Internal Combustion Engine as well as Retrofitting/Conversion Kit for such an Internal Combustion Engine | |
| CN102797593A (en) | Gas injection device | |
| CN112483244A (en) | Methanol engine gasoline auxiliary cold start fuel supply system | |
| US20130013171A1 (en) | Automotive fuel system | |
| CN201544777U (en) | Vehicular fuel oil and fuel gas hybrid refitted suite | |
| CN109538389A (en) | A kind of dual fuel engine system and its control method based on mechanical oil pump feed | |
| US20050252489A1 (en) | Variable octane duel fuel delivery system | |
| CN203978671U (en) | The diesel oil ignited direct-jet natural gas engine fuel supply system of trace | |
| CN116927982A (en) | Fuel low-pressure two-stage mixing device for hydrogen internal combustion engine and control method | |
| CN210370987U (en) | Dual-fuel engine system based on mechanical pump oil supply | |
| Ismail et al. | CNG-diesel dual fuel controlling concept for common rail diesel | |
| CN110905694A (en) | Fuel double-injection system for natural gas engine and injection control method thereof | |
| RU2504679C2 (en) | Two-fuel engine control system | |
| CN112576418A (en) | Engine system with EGR cylinder and engine control method | |
| CN114060153B (en) | Fuel supply system and control method of dual-fuel engine | |
| CN209704729U (en) | A kind of double-fuel diesel engine oil circuit improvement structure | |
| CN105134401A (en) | Natural gas engine air cylinder cover assembly suitable for multi-point injection system | |
| KR20090005212A (en) | Operating procedure and device for a natural gas operated internal combustion engine | |
| CN214366432U (en) | Air supply system for pre-combustion chamber and engine with air supply system | |
| CN110594045A (en) | Control method for fuel injection quantity of carburetor for unmanned aerial vehicle | |
| CN109441669A (en) | Cylinder gas engine injection apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |