GB2619571A - A supply & control system and method of engine oxygen-enriched micro-nano bubble premixed fuel - Google Patents
A supply & control system and method of engine oxygen-enriched micro-nano bubble premixed fuel Download PDFInfo
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- GB2619571A GB2619571A GB2216065.9A GB202216065A GB2619571A GB 2619571 A GB2619571 A GB 2619571A GB 202216065 A GB202216065 A GB 202216065A GB 2619571 A GB2619571 A GB 2619571A
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- fuel
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- oxygen
- gas
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- 239000000446 fuel Substances 0.000 title claims abstract description 448
- 239000001301 oxygen Substances 0.000 title claims abstract description 165
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 165
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 163
- 239000002101 nanobubble Substances 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 181
- 238000002360 preparation method Methods 0.000 claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000002737 fuel gas Substances 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 57
- 239000002828 fuel tank Substances 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 5
- 238000000889 atomisation Methods 0.000 abstract description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
- 229910010271 silicon carbide Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000576 coating method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000003064 anti-oxidating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000002296 dynamic light scattering Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- GAYPVYLCOOFYAP-UHFFFAOYSA-N [Nb].[W] Chemical compound [Nb].[W] GAYPVYLCOOFYAP-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011153 ceramic matrix composite Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- KRTSDMXIXPKRQR-AATRIKPKSA-N monocrotophos Chemical compound CNC(=O)\C=C(/C)OP(=O)(OC)OC KRTSDMXIXPKRQR-AATRIKPKSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/10—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/10—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air having secondary air added to the fuel-air mixture
-
- 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
-
- 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
- F02D41/0002—Controlling intake air
-
- 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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
-
- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
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- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
-
- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/10—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone
- F02M25/12—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone the apparatus having means for generating such gases
-
- 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
- F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
A supply & control system of oxygen-enriched micro-nano bubble premixed fuel for engine comprising a controllable four-way fuel valve 9, a premixed fuel preparation system 25, a premixed fuel storage device 17, a fuel-gas separation device 11, a liquid position sensor 13 and a bubble concentration sensor 12. The system may also comprise an exhaust gas turbo 7 and a gas separation device 20 with a gas separation membrane 19 for increasing the oxygen concentration in the air for pre-mixing with the fuel. A supply & control method of oxygen-enriched micro-nano bubble premixed fuel for the engine to improve the fuel preparation quality of the engine at different rotating speeds and working conditions, improve the oxygen content of the fuel for the engine, and improve the atomization characteristics of the fuel, thereby optimizing the combustion process of the engine.
Description
A Supply & Control System and Method of Engine Oxygen-Enriched Micro-Nano Bubble Premixed Fuel
FIELD OF THE INVENTION
The invention is applied to the technical field of fuel pretreatment for vehicle engine, in particular to method and a supply & control system of oxygen-enriched micro-nano bubble premixed fuel for engine.
BACKGROUND OF THE RELATED ART
At present, the technologies to improve fuel atomization quality and in-cylinder oxygen content mainly include variable supercharging, variable valve, blended fuel, high-pressure injection, cavitation injection, and dual-fuel injection, etc. Although these technologies can improve engine fuel atomization quality and increase in-cylinder oxygen content, these technologies have fallen into a bottleneck at present. Further improving fuel atomization quality and in-cylinder oxygen content through these technologies will lead to a more complicated engine structure, a harsher in-cylinder environment, cost increase of technology and material and the harmful emissions that cannot be further reduced.
The air is changed into oxygen-rich gas by gas separation device, and premixed with fuel at nanometer scale to form oxygen-rich micro-nano bubble premixed fuel to improve the properties of fuel. Oxygen-enriched micro-nano bubble premixed fuel has higher heat conductivity, and the spray produced by high-pressure injection has high gas phase concentration and gas phase transmission efficiency, thus effectively improving the mixing uniformity of fuel and air, At the same time, oxygen-enriched micro-nano bubbles can increase the oxygen content in the engine cylinder, which is beneficial to the complete combustion of fuel in the engine cylinder, improve the thermal efficiency of the engine and reduce the pollutant emission when the fuel is not completely burned. However, at present, the supply & control system of oxygen-enriched micro-nano bubble premixed fuel is mainly used in engine bench test, but there is no mature preparation, supply and control system for engine oxygen-enriched micro-nano bubble premixed fuel.
In order to solve the above problems, the present invention proposes a supply & control system and method of engine oxygen-enriched micro-nano bubble premixed fuel which can be applied to the current automobile power system. The system can incrassate oxygen of the air to form oxygen-enriched gas, which is pretreated with the fuel, thus improving the spray quality and the oxygen content in the cylinder of the engine under different working conditions, and further improving the fuel combustion process of the engine
SUMMARY OF THE INVENTION
The purpose of the invention is to provide a supply & control system and method of engine oxygen-enriched micro-nano bubble premixed fuel, which can incrassate oxygen of the air and pretreat the fuel, improve the mixing uniformity of fuel and air, improve the oxygen content in the cylinder of the engine under different working conditions, and improve the combustion process of engine fuel.
The invention is realized in the following way. A supply & control system for engine oxygen-enriched micro-nano bubble premixed fuel includes fuel tank, air filter, fuel tank valve, fuel filter, controllable four-way fuel valve, transmission mechanism, oxygen-enriched micro-nano bubble premixed fuel preparation system, oxygen-enriched micro-nano bubble premixed fuel storage device, pressure limiting gas valve, fuel-gas separation device, fuel flow sensor, high-pressure fuel pump, high-pressure fuel rail, injector, fuel pressure regulating valve, ECU, fuel tank pressure sensor, liquid position sensor, bubble concentration sensor I, the fuel rail pressure sensor, bubble concentration sensor II, and engine.
The outlet of the air filter is connected with the gas inlet of the oxygen-enriched micro-nano bubble premixed fuel preparation system; The outlet of the fuel tank is connected with the inlet of the fuel tank valve, the outlet of the fuel tank valve is connected with the inlet of the fuel filter, the outlet of the fuel filter is connected with the inlet I of the controllable four-way fuel valve, the outlet II of the controllable four-way fuel valve is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel preparation system, and the fuel outlet of the oxygen-enriched micro-nano bubble premixed fuel preparation system is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel storage device, the fuel outlet of the oxygen-enriched micro-nano bubble premixed fuel storage device is connected with the fuel inlet of the fuel-gas separation device, the fuel outlet of the fuel-gas separation device is connected with the inlet of the fuel flow sensor, the outlet of the fuel flow sensor is connected with the inlet of the high-pressure fuel pump, the outlet of the high-pressure fuel pump is connected with the inlet of the high-pressure fuel rail, the outlet of the high-pressure fuel rail is connected with the inlet of the injector, the fuel drain back port of the high-pressure fuel rail is connected with the inlet of the fuel pressure regulating valve, the fuel drain back port I of the fuel pressure regulating valve is connected with the fuel drain back port of the injector through a fuel pipe and then connected with the inlet port IV of the controllable four-way fuel valve, the fuel drain back port II of the fuel pressure regulating valve is connected with a fuel supply pipe, and the nozzle the injector is connected with the combustion chamber of the engine.
According to the further technical scheme, the transmission mechanism comprises a crankshaft pulley, a vacuum gas pump pulley and a governor, wherein the crankshaft pulley is connected with the engine crankshaft; the crankshaft pulley is connected with the vacuum gas pump pulley through a belt; the vacuum gas pump pulley is connected with the governor; and a crankshaft position sensor is arranged at the crankshaft pulley.
Further technical scheme, the oxygen-enriched micro-nano bubble premixed fuel preparation system comprises an exhaust gas turbo, a compressor, a flow regulating device, a gas separation device, a controllable three-way gas valve, a vacuum gas pump, a four-way gas valve, a gas flow sensor, a micro-nano bubble generator and a low-pressure fuel pump, wherein the exhaust gas turbo is arranged in a volute and connected with the exhaust manifold, and the volute is connected with the compressor. The inlet of the compressor is connected with the outlet of the air filter, and the outlet I of the compressor is connected with the intake manifold, the outlet II of the compressor is connected with the gas inlet of the flow regulating device, the gas outlet of the flow regulating device is connected with the inlet of the gas separation device. And that outlet I of the gas separation device is open to the atmosphere, and the outlet II of the gas separation device is connected with the inlet III of the controllable three-way gas valve, the outlet I of the controllable three-way gas valve is connected with the inlet of the vacuum gas pump, the outlet II of the controllable three-way gas valve is connected with the outlet of the vacuum gas pump The vacuum gas pump is mechanically connected with the speed governor in the transmission mechanism, and the outlet of the vacuum gas pump is connected with the inlet I of the four-way gas valve, the inlet II of the four-way gas valve is connected with the vent of the fuel-gas separation device, the inlet III of the four-way gas valve is connected with the outlet of the pressure limiting gas valve, and the outlet IV of the four-way gas valve is connected with the inlet of the gas flow sensor, and the outlet of the gas flow sensor is connected with the gas inlet of the micro-nano bubble generator, the fuel inlet of the micro-nano bubble generator is connected with the outlet of the low-pressure fuel pump, and the outlet of the micro-nano bubble generator is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel storage device.
For the further technical scheme, the controllable four-way fuel valve is provided with three inlets and one outlet, wherein the inlet I, outlet II, inlet HI and inlet W of the controllable four-way fuel valve are respectively connected with the outlet of the fuel filter, the inlet of the low-pressure fuel pump of the oxygen-enriched micro-nano bubble premixed fuel preparation system, the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device and the fuel drain back pipe of the injector, and the inlet I and the inlet III of the controllable four-way fuel valve are respectively provided with inlet valve I and inlet valve III which are controlled by the ECU to change the opening angle.
According to the further technical scheme, the controllable three-way gas valve is provided with one inlet and two outlets, wherein the outlet I, outlet II and inlet III of the controllable three-way gas valve are respectively connected with the inlet and outlet of the vacuum gas pump and the gas outlet II of the gas separation device, and the outlet I and the outlet II of the controllable three-way gas valve are respectively provided with an outlet valve I and an outlet valve II of which the opening angle is controlled by the ECU.
According to the further technical scheme, the oxygen-enriched micro-nano bubble premixed fuel storage device is provided with a fuel inlet, a gas vent, a fuel outlet and a fuel drain back hole, and the fuel inlet, the gas vent, the fuel outlet and the fuel drain back hole of the oxygen-enriched micro-nano bubble premixed fuel storage device are respectively connected with the fuel outlet of the micro-nano bubble generator, the inlet of the pressure limiting gas valve, the fuel inlet of the fuel-gas separation device and the inlet III of the controllable four-way fuel valve.
According to the further technical scheme, the high-pressure fuel rail is provided with an inlet, a fuel drain back port and an outlet, and the inlet, the fuel drain back port and the outlet of the high-pressure fuel rail are respectively connected with the outlet of the high-pressure fuel pump, the inlet of the fuel pressure regulating valve and the injector.
According to the further technical scheme, the fuel flow sensor, the gas flow sensor, the fuel tank pressure sensor, the liquid position sensor, the bubble concentration sensor I, the fuel rail pressure sensor, the bubble concentration sensor II and the crankshaft position sensor are all connected with the signal input end of the ECU According to the further technical scheme, the signal output port of the ECU is connected with the controllable four-way fuel valve, the pressure limiting gas valve, the controllable three-way gas valve, the governor, the flow regulating device and the fuel pressure regulating valve of the high-pressure fuel rail.
According to the further technical scheme, the supply & control method of the engine oxygen-enriched micro-nano bubble premixed fuel comprises the following supply & control steps: Step 1: Starting the engine after receiving the engine start signal; Step 2: The ECU initializes after receiving the power supply signal; Step 3: The crankshaft position sensor at the crankshaft pulley judges the current engine speeding condition. If it is a medium or small speeding condition, the mechanical supercharging method is adopted, and the controllable three-way gas valve outlet valve I is opened and the outlet valve II is closed, hi case of large speeding condition, the exhaust gas turbocharging mode is adopted, and the controllable three-way gas valve outlet valve I is closed, the outlet valve II is opened, and the governor is disconnected from the vacuum gas pump.
Step 4: The liquid position sensor in the oxygen-enriched micro-nano bubble premixed fuel storage devi ce judges the current fuel level, and if the liquid level is lower than the required minimum liquid level, the inlet valve I of the controllable four-way fuel valve is opened; Otherwise, a second judgment is made, if the liquid level is lower than the required maximum fuel level, the inlet valve I of the controllable four-way fuel valve is kept unchanged, and if the fuel level is higher than the required maximum liquid level, the inlet valve! of the controllable four-way fuel valve is closed; Step 5: The gas flow sensor in the oxygen-enriched micro-nano bubble premixed fuel preparation system judges the flow rate of oxygen-enriched gas under the current working condition, and if the current flow rate of oxygen-enriched gas is the optimal flow rate of oxygen-enriched gas required under the working condition, the flow regulating device remains unchanged; Otherwise, a second judgment will be made, if the flow rate of the oxygen-enriched gas is less than the optimal flow rate, the flow rate regulating device is adjusted to increase the volume of intake gas, otherwise, the intake gas volume be reduced through the flow rate regulating device; Step 6: The bubble concentration sensor I in the oxygen-enriched micro-nano bubble premixed fuel storage device judges the bubble concentration of the current oxygen-enriched micro-nano bubble premixed fuel; If the bubble concentration does not meet the optimal bubble concentration, the inlet valve III of the controllable four-way fuel valve is opened, and the fuel flows back to the micro-nano bubble generator through the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device for further refinement; Otherwise, the inlet valve III of the controllable four-way fuel valve is closed, the preparation is completed, and the oxygen-enriched micro-nano bubble premixed fuel is supplied to the engine according to the engine requirements; Step 7: The fuel tank pressure sensor in the oxygen-enriched micro-nano bubble premixed fuel storage device judges the current fuel tank pressure, and if the current fuel tank pressure in the oxygen-enriched micro-nano bubble premixed fuel storage device is larger than the maximum pressure, the pressure limiting gas valve is opened; Otherwise, the pressure limiting gas valve is closed; Step 8: The bubble concentration sensor II of the high-pressure fuel rail judges the bubble concentration of the oxygen-enriched micro-nano bubble premixed fuel in the high-pressure fuel rail, and if the bubble concentration meets the optimum concentration of the oxygen-enriched micro-nano bubble premixed fuel under the current working condition, the fuel drain back port I of the fuel pressure regulating valve is closed and the fuel drain back port II is opened; Otherwise, the fuel drain back port I of the fuel pressure regulating valve is opened, the fuel drain back port II is closed, and the oxygen-enriched micro-nano bubble premixed fuel preparation system is refined to prepare the oxygen-enriched micro-nano bubble premixed fuel with the optimum concentration meeting the requirements; Step 9: The fuel rail pressure sensor of the high-pressure fuel rail judges the fuel pressure of the oxygen-enriched micro-nano bubble premixed fuel in the high-pressure fuel rail, and if the current fuel rail pressure is lower than the optimal fuel rail pressure, the inlet of the fuel pressure regulating valve is closed; If the current rail pressure is equal to the optimal rail pressure, the opening angle of the inlet of the fuel pressure regulating valve will remain unchanged; If the current fuel rail pressure is larger than the optimal fuel rail pressure, the inlet of the fuel pressure regulating valve is opened; Step 10: The high-pressure rail supplies fuel to the injector; Step 11: Inject fuel into the engine cylinder by the injector; Step 12: Circulate the above steps 3 to 11; Step 13: The engine stops running, and the engine oxygen-enriched micro-nano bubble premixed fuel preparation, supply and control system is shut down.
Compared with the prior art, the invention has the following beneficial effects: Compared with the prior art, the invention has the beneficial effects that the oxygen-enriched micro-nano bubble premixed fuel with the best concentration required by the engine under different working conditions can be quickly prepared through the ingenious arrangement and connection of various devices and the flexible and accurate coordination of various systems, and the oxygen-enriched micro-nano bubble premixed fuel can be quickly supplied to the engine while ensuring the stable operation of the engine, so that the oxygen concentration, premixing ratio and mixing uniformity of the fuel in the spraying process can be improved by utilizing the properties of the oxygen-enriched micro-nano bubble premixed fuel, and the purpose of improving the efficient and clean combustion of the engine can be achieved.
BRIEF DESCRIPTION OF THE DRAWINGS:
Fig. 1 is a schematic structural diagram of the engine oxygen-enriched micro-nano bubble premixed fuel supply system.
Fig. 2 is a system diagram of the supply & control method of engine oxygen-enriched micro-nano bubble premixed fuel.
Fig. 3 is a logic block diagram of the supply & control method of engine oxygen-enriched micro-nano bubble premixed fuel.
Note of reference number: 1-Fuel flow sensor, 2-Exhaust manifold, 3-Fuel tank, 4-Air filter, 5-Fuel tank valve, 6-Compressor, 7-Exhaust turbo, 8-Fuel filter, 9-Controllable four-way fuel valve, 10-Low pressure fuel pump, 11-Fuel-gas separation device, 12-Bubble concentration sensor I, 13-Liquid position sensor, 14-Micro-nano bubble generator, 15-Flow regulating device, 16-Gas flow sensor, 17-Oxygen-enriched micro-nano bubble premixed fuel storage device, 18-Fuel tank pressure sensor, 19-Gas separation membrane, 20-Gas separation device, 21-Pressure limiting gas valve, 22-Four-way gas valve, 23-Vacuum gas pump, 24-Controllable three-way gas valve, 25-Oxygen-enriched micro-nano bubble premixed fuel preparation system, 26-Governor, 27-Vacuum gas pump pulley, 28-Transmission mechanism, 29-Injector, 30-Bubble concentration sensor H, 31-Rail pressure sensor, 32-High pressure fuel rail, 33-High pressure fuel pump, 34-Fuel pressure regulating valve, 35-Engine, 36-Crankshaft pulley, 37-Crankshaft position sensor, 38-Intake manifold, 39-ECU.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In order to make the purpose, technical scheme and advantages of the present invention clearer, the following embodiments will further explain the present invention in detail. It should be understood that the specific embodiments described here are only for explaining the present invention, but not for limiting the present invention.
The specific implementation of the present invention will be described in detail with reference to the following specific embodiments. Embodiment 1: A supply & control system of oxygen-enriched micro-nano bubble premixed fuel for engine. Include filet tank 3, air filter 4, fuel tank valve 5, fuel filter 8, controllable four-way fuel valve 9, transmission mechanism 28, oxygen-enriched micro-nano bubble premixed fuel preparation system 25, oxygen-enriched micro-nano bubble premixed fuel storage device 17, pressure limiting gas valve 21, fuel-gas separation device 11, fuel flow sensor I, high pressure fuel pump 33, high pressure fuel rail 32, injector 29, fuel pressure regulating valve 34, ECU 39, fuel tank pressure sensor 18, liquid position sensor 13, bubble concentration sensor I, 12, fuel rail pressure sensor 31 and bubble concentration sensor II, 30. The air is pressurized and filtered in the oxygen-enriched micro-nano bubble premixed fuel preparation system 25, and the oxygen-enriched micro-nano bubble premixed fuel is initially formed by mixing with the fuel in the micro-nano bubble generator 14. The oxygen-rich micro-nano bubble premixed fuel is refined and stored through the oxygen-rich micro-nano bubble storage device 17, and then pumped into the high-pressure fuel rail 32 through the high-pressure fuel pump 33. According to the operating conditions of the engine, the high-pressure fuel rail 32 injects the oxygen-enriched micro-nano bubble premixed fuel into the engine 35 and bums with the air through the injector 29.
In terms of gas circuit connection, the outlet of the air filter 4 is connected with the inlet of the compressor 6, the outlet I of the compressor 6 is connected with the inlet of the intake manifold 38, the outlet of the intake manifold 38 is connected with the engine 35, the outlet II of the compressor 6 is connected with the gas inlet of the flow regulating device 15, the gas outlet of the flow regulating device 15 is connected with the inlet of the gas separation device 20, and the nitrogen-rich gas outlet of the gas separation device 20 is directly open to the atmosphere. The oxygen-rich gas outlet of the gas separation device 20 is connected with the inlet III of controllable three-way gas valve 24, the outlet I of the controllable three-way gas valve 24 is connected with the inlet of the vacuum gas pump 23, the outlet II of the controllable three-way gas valve 24 is connected with the outlet of the vacuum gas pump 23, the outlet of the vacuum gas pump 23 is connected with the inlet I of the four-way gas valve 22, the inlet II of the four-way gas valve 22 is connected with the vent of the fuel-gas separation device 11, and the inlet III of the four-way gas valve 22 is connected with the outlet of the pressure limiting gas valve 21. The inlet of the pressure limiting gas valve 21 is connected with the vent of the oxygen-enriched micro-nano bubble premixed fuel storage device 17, the outlet IV of the four-way gas valve 22 is connected with the inlet of the gas flow sensor 16, and the outlet of the gas flow sensor 16 is connected with the gas inlet of the micro-nano bubble generator 14; In terms of fuel circuit connection, the outlet of the fuel tank 3 is connected with the inlet of the fuel tank valve 5, the outlet of the fuel tank valve 5 is connected with the inlet of the fuel filter 8, the outlet of the fuel filter 8 is connected with the inlet 1 of the controllable four-way fuel valve 9, the outlet II of the controllable four-way fuel valve 9 is connected with the inlet of the low pressure fuel pump 10, and the outlet of the low pressure fuel pump 10 is connected with the fuel inlet of the micro-nano bubble generator 14. The fuel outlet of the micro-nano bubble generator 14 is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel storage device 17, and the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device 17 is connected with the inlet Ill of the controllable four-way fuel valve 9. The fuel outlet of the oxygen-enriched micro-nano bubble premixed fuel storage device 17 is connected with the fuel inlet of the fuel-gas separation device 11, and the fuel outlet of the fuel-gas separation device 11 is connected with the inlet of the fuel flow sensor 1, the outlet of the fuel flow sensor 1 is connected with the inlet of the high pressure fuel pump 33, the outlet of the high pressure fuel pump 33 is connected with the inlet of the high pressure fuel rail 32, the outlet of the high pressure fuel rail 32 is connected with the inlet of the injector 29, and the fuel drain back port of the high pressure fuel rail 32 is connected with the inlet of the fuel pressure regulating valve 34 The fuel drain back port I of the fuel pressure regulating valve 34 is connected with the fuel drain back port of the injector 29 through the fuel pipe, and then connected with the inlet III of the controllable four-way fuel valve 9, the fuel drain back port II of the fuel pressure regulating valve 34 is connected with the fuel supply pipe, and the nozzle of the injector 29 is connected with the combustion chamber of the engine 35 In terms of signal connection, the fuel flow sensor 1, the bubble concentration sensor I, 12, the liquid position sensor 13, the gas flow sensor 16, the fuel tank pressure sensor 18, the bubble concentration sensor II, 30, the fuel rail pressure sensor 31 and the crankshaft position sensor 37 are connected to the signal input end of ECU 39 for communication interaction, The signal output port of the ECU 39 is connected with the controllable four-way fuel valve 9, the flow regulating device 15, the pressure limiting gas valve 21, the controllable three-way gas valve 24, the governor 26 and the fuel pressure regulating valve 34 of the high-pressure fuel rail 32 to transmit signals and execute commands; After the engine is started, the oxygen-enriched micro-nano bubble premixed fuel with the optimum concentration required at present is determined according to the working condition of the engine. Under the action of the low-pressure fuel pump 10, the fuel in the fuel tank 3 is sucked out, filtered by the fuel filter 8 to remove impurities, and then enters the micro-nano bubble generator 14 through the controllable four-way fuel valve 9 to be mixed with the oxygen-enriched gas with the optimum proportion to prepare the oxygen-enriched micro-nano bubble premixed fuel with the optimum concentration, and then enters the oxygen-enriched micro-nano bubble premixed fuel storage device 17, If the quality of the prepared oxygen-enriched micro-nano bubble premixed fuel does not meet the requirements, the oxygen-enriched micro-nano bubble premixed fuel will flow back into the micro-nano bubble generator through the controllable four-way fuel valve 9 through the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device 17 for refinement. The prepared oxygen-enriched micro-nano bubble fuel is separated from the escaping gas by the fuel-gas separator 11 under the action of the high-pressure fuel pump 33, then enters the high-pressure fuel rail 32 and enters the engine through the injector 29. The pressure of the high-pressure fuel rail 32 is regulated by the fuel pressure regulating valve 34. When the pressure of the high-pressure fuel rail 32 is too high, the fuel pressure regulating valve 34 will drain back the excess fuel to the micro-nano bubble generator 14 through the fuel drain back pipe, otherwise it will drain back to the fuel supply pipe and re-enter the high-pressure fuel rail 32 through the high-pressure fuel pump 33.
In the invention, the gas separation device (20) is provided with a gas separation membrane (19), The gas flow sensor (16) is not limited to measuring gas flow, but also can measure gas pressure, flow rate and other parameters; The method for preparing micro-nano bubble premixed fuel by the micro-nano bubble generator (14) is not limited to hydraulic cavitation, but also can adopt mechanical cutting, pressure change, ultrasonic cavitation, porous membrane infiltration and other methods; The oxygen-enriched micro-nano bubble premixed fuel preparation system (25) can prepare and supply oxygen not only by gas separation membrane preparation, but also by oxygen cylinder direct supply.
The oxygen-enriched gas pipeline, the four-way gas valve (22) and the controllable three-way gas valve (24) in the oxygen-enriched micro-nano bubble premixed fuel preparation system (25) all adopt, but are not limited to, anti-oxidation materials, and anti-oxidation coatings such as niobium-tungsten alloy coating, continuous carbon fiber reinforced silicon carbide ceramic matrix composite (Cf/SiC) coating, continuous silicon carbide fiber reinforced silicon carbide matrix composite (SiC/SiC) coating, etc. can also be adopted to improve the anti-oxidation performance.
The oxygen-enriched micro-nano bubble premixed fuel storage device (17) is provided with a fuel tank pressure sensor (18), a liquid position sensor (13) and a bubble concentration sensor 1(12); The method for measuring the micro-nano bubble concentration by the bubble concentration sensor I, (12) is not limited to measuring the oxygen concentration content in the oxygen-enriched micro-nano bubble premixed fuel, but also can be used to characterize the bubble concentration of the oxygen-enriched micro-nano bubble premixed fuel by dynamic light scattering, nanoparticle tracking, zeta potential and other ways; The high-pressure fuel rail (32) is provided with a fuel rail pressure sensor (31) and a bubble concentration sensor II, (30); The method of measuring the micro-nano bubble concentration by the bubble concentration sensor II, (30) is not limited to measuring the oxygen concentration content in the oxygen-enriched micro-nano bubble premixed fuel, but also can be used to characterize the bubble concentration of the oxygen-enriched micro-nano bubble premixed fuel by dynamic light scattering, nanoparticle tracking, zeta potential and other ways; The present invention provides a supply & control method of oxygen-enriched micro-nano bubble premixed fuel for the engine, which is divided into two parts. The first part is the preparation and refinement control method of oxygen-enriched micro-nano bubble premixed fuel, so as to ensure that enough oxygen-enriched micro-nano bubble premixed fuel meeting the requirements of the engine is stored in the oxygen-enriched micro-nano bubble premixed fuel storage device 17; In the second part, aiming at the application of oxygen-enriched micro-nano bubble premixed fuel, the control method of oxygen-enriched micro-nano bubble premixed fuel supply is put forward by improving the existing control method of fuel supply system, so as to ensure that the concentration of oxygen-enriched micro-nano bubble premixed fuel meets the requirements of the engine under different working conditions.
The engine oxygen-enriched micro-nano bubble premixed fuel supply & control method comprises the following steps: Step 1: Starting the engine 35 after receiving the engine 35 start signal; Step 2: The ECU 39 initializes after receiving the power supply signal; Step 3: The crankshaft position sensor 37 at the crankshaft pulley 36 judges the current engine speeding condition. If it is a medium or small speeding condition, the mechanical supercharging method is adopted, and the controllable three-way gas valve 24 outlet valve I is opened and the outlet valve 2 is closed. In case of large speeding condition, the exhaust gas turbocharging mode is adopted, and the controllable three-way gas valve 24 outlet valve I is closed, the outlet valve II is opened, and the governor 26 is disconnected from the vacuum gas pump 23; Step 4: The liquid position sensor 13 in the oxygen-enriched micro-nano bubble premixed fuel storage device 17 judges the current fuel level, and if the liquid level is lower than the required minimum liquid level, the inlet valve I of the controllable four-way fuel valve 9 is opened; Otherwise, a second judgment is made, if the liquid level is lower than the required maximum fuel level, the inlet valve I of the controllable four-way fuel valve 9 remains unchanged, and if the fuel level is higher than the required maximum liquid level, the inlet valve I of the controllable four-way fuel valve 9 is closed; Step 5: The gas flow sensor 16 in the oxygen-enriched micro-nano bubble premixed fuel preparation system 25 judges the flow rate of oxygen-enriched gas under the current working condition, and if the current flow rate of oxygen-enriched gas is the optimal flow rate of oxygen-enriched gas required under the working condition, the flow regulating device 15 remains unchanged; Otherwise, a secondjudgment will be made, if the flow rate of the oxygen-enriched gas is less than the optimal flow rate, the flow rate regulating device 15 is adjusted to increase the volume of intake gas, otherwise, the intake gas volume be reduced through the flow rate regulating device 15; Step 6: The bubble concentration sensor 1, 12 in the oxygen-enriched micro-nano bubble premixed fuel storage device 17 judges the bubble concentration of the current oxygen-enriched micro-nano bubble premixed fuel, and if the bubble concentration does not meet the optimal bubble concentration, the inlet valve III of the controllable four-way fuel valve 9 is opened, and the fuel flows back to the micro-nano bubble generator 14 through the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device 17 for further refinement; Otherwise, the inlet valve III of the controllable four-way fuel valve 9 is closed, the preparation is completed, and the oxygen-enriched micro-nano bubble premixed fuel is supplied to the engine according to the engine according to the engine requirements; Step 7: The fuel tank pressure sensor 18 in the oxygen-enriched micro-nano bubble premixed fuel storage device 17 judges the current fuel tank pressure, and if the current fuel tank pressure in the oxygen-enriched micro-nano bubble premixed fuel storage device 17 is larger than the maximum pressure, the pressure limiting gas valve 21 is opened; Otherwise, the pressure limiting gas valve 21 is closed; Step 8: The bubble concentration sensor II 30 of the high-pressure fuel rail 32 judges the bubble concentration of the oxygen-enriched micro-nano bubble premixed fuel in the high-pressure fuel rail 32. If the bubble concentration meets the optimum concentration of the oxygen-enriched micro-nano bubble premixed fuel under the current working condition, the fuel drain back port I of the fuel pressure regulating valve 34 is closed and the fuel drain back port 11 is opened; Otherwise, the fuel drain back port 1 of the fuel pressure regulating valve 34 is opened, the fuel drain back port II is closed, and the oxygen-enriched micro-nano bubble premixed fuel preparation system 25 refines to prepare the oxygen-enriched micro-nano bubble premixed fuel with the optimum concentration meeting the requirements; Step 9: The rail pressure sensor 31 of the high-pressure rail 32 judges the fuel pressure of the oxygen-enriched micro-nano bubble premixed fuel in the high-pressure rail 32, and if the current rail pressure is lower than the optimal rail pressure, the inlet of the fuel pressure regulating valve 34 is closed; If the current rail pressure is equal to the optimal rail pressure, the opening angle of the inlet of the fuel pressure regulating valve 34 will remain unchanged; If the current fuel rail pressure is larger than the optimal fuel rail pressure, the inlet of the fuel pressure regulating valve 34 is opened; Step 10: The high-pressure rail 32 supplies fuel to the injector 29; Step 11: Inject fuel into the engine 35 cylinder by the injector 29; Step 12: Circulate the above steps 3 to 11; Step 13: The engine 35 stops naming, and the engine oxygen-enriched micro-nano bubble premixed fuel preparation, supply and control system is shut down.
In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims (10)
- CLAIMS1. A supply & control system of oxygen-enriched micro-nano bubble premixed fuel for engine is characterized by comprising a fuel tank, an air filter, a fuel tank valve, a fuel filter, a controllable four-way fuel valve, a transmission mechanism, an oxygen-enriched micro-nano bubble premixed fuel preparation system, an oxygen-enriched micro-nano bubble premixed fuel storage device, a pressure limiting gas valve, a fuel-gas separation device, a fuel flow sensor, a high-pressure fuel pump, a high-pressure fuel rail, an injector, a fuel pressure regulating valve, an ECU, a fuel tank pressure sensor, a liquid position sensor, a bubble concentration sensor I, a rail pressure sensor, a bubble concentration sensor II, and an engine.The outlet of the air filter is connected with the gas inlet of the oxygen-enriched micro-nano bubble premixed fuel preparation system; The outlet of the fuel tank is connected with the inlet of the fuel tank valve, the outlet of the fuel tank valve is connected with the inlet of the fuel filter, the outlet of the fuel filter is connected with the inlet I of the controllable four-way fuel valve, the outlet II of the controllable four-way fuel valve is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel preparation system, and the fuel outlet of the oxygen-enriched micro-nano bubble premixed fuel preparation system is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel storage device, the fuel outlet of the oxygen-enriched micro-nano bubble premixed fuel storage device is connected with the fuel inlet of the fuel-gas separation device, the fuel outlet of the fuel-gas separation device is connected with the inlet of the fuel flow sensor, the outlet of the fuel flow sensor is connected with the inlet of the high-pressure fuel pump, the outlet of the high-pressure fuel pump is connected with the inlet of the high-pressure fuel rail, the outlet of the high-pressure fuel rail is connected with the inlet of the injector. The fuel drain back port of the high-pressure fuel rail is connected with the inlet of the fuel pressure regulating valve, the fuel drain back port I of the fuel pressure regulating valve is connected with the fuel drain back port of the injector through a fuel pipe and then connected with the inlet port IV of the controllable four-way fuel valve, the fuel drain back port II of the fuel pressure regulating valve is connected with a fuel supply pipe, and the nozzle of the injector is connected with the combustion chamber of the engine.
- 2. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim I is characterized in that the transmission mechanism comprises a crankshaft pulley, a vacuum gas pump pulley and a governor, wherein the crankshaft pulley is connected with the engine crankshaft, and it is also connected with the vacuum gas pump pulley through a belt, the vacuum gas pump pulley is connected with the governor, and a crankshaft position sensor is arranged at the crankshaft pulley.
- 3. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim I is characterized in that the oxygen-enriched micro-nano bubble premixed fuel preparation system comprises an exhaust gas turbo, a compressor, a flow regulating device, a gas separation device, a controllable three-way gas valve, a vacuum gas pump, a four-way gas valve, a gas flow sensor, a micro-nano bubble generator and a low-pressure fuel pump, wherein the exhaust gas turbo is arranged in a volute and connected with the exhaust manifold, and the volute is connected with the compressor. The inlet of the compressor is connected with the outlet of the air filter, the outlet I of the compressor is connected with the intake manifold, the outlet II of the compressor is connected with the gas inlet of the flow regulating device, the gas outlet of the flow regulating device is connected with the inlet of the gas separating device, the outlet I of the gas separating device is open to the atmosphere, and the outlet II of the gas separating device is connected with the inlet III of the controllable three-way gas valve. The outlet I of the controllable three-way gas valve is connected with the inlet of the vacuum gas pump, the outlet II of the controllable three-way gas valve is connected with the outlet of the vacuum gas pump, the vacuum gas pump is mechanically connected with the speed governor in the transmission mechanism, and the outlet of the vacuum gas pump is connected with the inlet I of the four-way gas valve. The inlet II of the four-way gas valve is connected with the vent of the fuel-gas separation device, the inlet III of the four-way gas valve is connected with the outlet of the pressure limiting gas valve, and the outlet IV of the four-way gas valve is connected with the inlet of the gas flow sensor, the outlet of the gas flow sensor is connected with the gas inlet of the micro-nano bubble generator, the fuel inlet of the micro-nano bubble generator is connected with the outlet of the low-pressure fuel pump, and the fuel outlet of the micro-nano bubble generator is connected with the fuel inlet of the oxygen-enriched micro-nano bubble premixed fuel storage device.
- 4. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim 1 is characterized in that the controllable four-way fuel valve is provided with three inlets and one outlet, wherein the inlet I, the outlet II, the inlet HI, and the inlet IV of the controllable four-way fuel valve are respectively connected with the outlet of the fuel filter, the inlet of the low-pressure fuel pump of the oxygen-enriched micro-nano bubble premixed fuel preparation system, the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device and the fuel drain back pipe of the injector, and the inlet I and the inlet III of the controllable four-way fuel valve are respectively provided with inlet valve I and inlet valve III which are controlled by the ECU to change the opening angle.
- 5. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim 3 is characterized in that the controllable three-way gas valve is provided with one inlet and two outlets, wherein the outlets I, II and the inlet III of the controllable three-way gas valve are respectively connected with the inlet and outlet of the vacuum gas pump and the gas outlet II of the gas separation device, and the outlets I and II of the controllable three-way gas valve are respectively provided with an outlet valve I and an outlet valve II of which the opening angle is controlled by the ECU.
- 6. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim 4 is characterized in that the oxygen-enriched micro-nano bubble premixed fuel storage device is provided with a fuel inlet, a gas vent, a fuel outlet and a fuel drain back hole, and the fuel inlet, the gas vent, the fuel outlet and the fuel drain back hole of the oxygen-enriched micro-nano bubble premixed fuel storage device are respectively connected with the fuel outlet of the micro-nano bubble generator, the inlet of the pressure limiting gas valve, the fuel inlet of the fuel-gas separation device and the inlet III of the controllable four-way fuel valve.
- 7. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim 1 is characterized in that the high-pressure rail is provided with an inlet, a fuel drain back port and an outlet, and the inlet, the fuel drain back port and the outlet of the high-pressure fuel rail are respectively connected with the outlet of the high-pressure fuel pump, the inlet of the fuel pressure regulating valve and the injector.
- 8. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim 3 is characterized in that the fuel flow sensor, the gas flow sensor, the fuel tank pressure sensor, the liquid position sensor, the bubble concentration sensor I, the fuel rail pressure sensor, the bubble concentration sensor II and the crankshaft position sensor are all connected with the signal input end of the ECU.
- 9. The engine oxygen-enriched micro-nano bubble premixed fuel supply & control system according to claim 8 is characterized in that the signal output port of the ECU is connected with the controllable four-way fuel valve, the pressure limiting gas valve, the controllable three-way gas valve, the governor, the flow regulating device and the fuel pressure regulating valve of the high-pressure fuel rail.
- 10. A supply & control method of engine oxygen-enriched micro-nano bubble premixed fuel is characterized by comprising the following supply & control procedure; Step 1: Starting the engine after receiving the engine start signal; Step 2, The ECU initializes after receiving the power supply signal; Step 3: The crankshaft position sensor at the crankshaft pulley judges the current engine speeding condition. If it is a medium or small speeding condition, the mechanical supercharging method is adopted, and the controllable three-way gas valve outlet valve I is opened and the outlet valve II is closed. In case of large speeding condition, the exhaust gas turbocharging mode is adopted, and the controllable three-way gas valve outlet valve I is closed, the outlet valve II is opened, and the governor is disconnected from the vacuum gas pump.Step 4: The liquid position sensor in the oxygen-enriched micro-nano bubble premixed fuel storage device judges the current fuel level, and if the liquid level is lower than the required minimum liquid level, the inlet valve I of the controllable four-way fuel valve is opened; Otherwise, a second judgment is made, if the liquid level is lower than the required maximum fuel level, the inlet valve I of the controllable four-way fuel valve is kept unchanged, and if the fuel level is higher than the required maximum liquid level, the inlet valve I of the controllable four-way fuel valve is closed; Step 5: The gas flow sensor in the oxygen-enriched micro-nano bubble premixed fuel preparation system judges the flow rate of oxygen-enriched gas under the current working condition, and if the current flow rate of oxygen-enriched gas is the optimal flow rate of oxygen-enriched gas required under the working condition, the flow regulating device remains unchanged; Otherwise, a second judgment will be made, if the flow rate of the oxygen-enriched gas is less than the optimal flow rate, the flow rate regulating device is adjusted to increase the volume of intake gas otherwise, the flow rate regulating device is used to reduce the volume of intake gas; Step 6: The bubble concentration sensor I in the oxygen-enriched micro-nano bubble premixed fuel storage device judges the bubble concentration of the oxygen-enriched micro-nano bubble premixed fuel; If the bubble concentration does not meet the optimal bubble concentration, the inlet valve III of the controllable four-way fuel valve will be opened, and the fuel flows back to the micro-nano bubble generator through the fuel drain back port of the oxygen-enriched micro-nano bubble premixed fuel storage device for further refinement; Otherwise, the inlet valve Ill of the controllable four-way fuel valve is closed, the preparation is completed, and the oxygen-enriched micro-nano bubble premixed fuel is supplied to the engine according to the engine requirements; Step 7: The fuel tank pressure sensor in the oxygen-enriched micro-nano bubble premixed fuel storage device judges the current fuel tank pressure, and if the current fuel tank pressure in the oxygen-enriched micro-nano bubble premixed fuel storage device is larger than the maximum pressure, the pressure limiting gas valve is opened; Otherwise, the pressure limiting gas valve is closed; Step 8: The bubble concentration sensor of the high-pressure fuel rail judges the bubble concentration of the oxygen-enriched micro-nano bubble premixed fuel in the high-pressure fuel rail, and if the bubble concentration meets the optimum concentration of the oxygen-enriched micro-nano bubble premixed fuel under the current working condition, the fuel drain back port I of the fuel pressure regulating valve is closed and the fuel drain back port II is opened; Otherwise, the fuel drain back port I of the fuel pressure regulating valve is opened, the fuel drain back port II is closed, and the oxygen-enriched micro-nano bubble premixed fuel preparation system is refined to prepare the oxygen-enriched micro-nano bubble premixed fuel with the optimum concentration meeting the requirements; Step 9: The fuel rail pressure sensor of the high-pressure fuel rail judges the fuel pressure of the oxygen-enriched micro-nano bubble premixed fuel in the high-pressure fitel rail, and if the current fuel rail pressure is lower than the optimal fuel rail pressure, the inlet of the fuel pressure regulating valve is closed; If the current rail pressure is equal to the optimal rail pressure, the opening angle of the inlet of the fuel pressure regulating valve will remain unchanged; lithe current fuel rail pressure is larger than the optimal fuel rail pressure, the inlet of the fuel pressure regulating valve is opened; Step 10: The high-pressure rail supplies fuel to the injector; Step 11: Inject fuel into the engine cylinder by the injector; Step 12: Circulate the above steps 3 to 11; Step 13: The engine stops running, and the engine oxygen-enriched micro-nano bubble premixed fuel preparation, supply and control system is shut down.
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| US20060272620A1 (en) * | 2003-01-23 | 2006-12-07 | Viktor Gurin | Injection unit for an internal combustion engine |
| CN113153585A (en) * | 2021-05-06 | 2021-07-23 | 吉林大学 | Bubble flow premixed hydrocarbon fuel preparation and supply system and control method thereof |
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| KR100653881B1 (en) * | 2004-09-20 | 2006-12-05 | (주)한국환경기술 | Low-fuel comsumption and low-pollution combustion system for supplying an automobile engine with mixture of fuel and oxygen |
| US7406955B1 (en) * | 2007-11-20 | 2008-08-05 | Ultimate Combustion Company | Method and system for liquid fuel conditioning |
| JP2010112271A (en) * | 2008-11-06 | 2010-05-20 | Toyota Motor Corp | Fuel supply system of engine |
| US8464694B2 (en) * | 2009-04-15 | 2013-06-18 | Fuecotech, Inc. | Method and system for providing fuel to internal combustion engines |
| US20110220039A1 (en) * | 2010-03-09 | 2011-09-15 | Richard Nowicki | Hydrolysis system to produce hydrogen-oxygen gas as a fuel additive for internal combustion engines |
| DE102010039974A1 (en) * | 2010-08-31 | 2012-03-01 | Robert Bosch Gmbh | Conveyor of a fuel supply system of an internal combustion engine |
| JP2012246793A (en) * | 2011-05-25 | 2012-12-13 | Toyota Motor Corp | Fuel supply device of internal combustion engine |
| KR20160054297A (en) * | 2014-11-06 | 2016-05-16 | 한국국제철도건설(주) | Device for injecting hydrogen to the carburetor, and the supply system of oxygen inside the car-room |
| JP6572939B2 (en) * | 2017-05-19 | 2019-09-11 | トヨタ自動車株式会社 | Gas supply device for internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060272620A1 (en) * | 2003-01-23 | 2006-12-07 | Viktor Gurin | Injection unit for an internal combustion engine |
| CN113153585A (en) * | 2021-05-06 | 2021-07-23 | 吉林大学 | Bubble flow premixed hydrocarbon fuel preparation and supply system and control method thereof |
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