CN108533422A - A kind of Alcohol engines water mixing spraying system and water mixing injection method - Google Patents
A kind of Alcohol engines water mixing spraying system and water mixing injection method Download PDFInfo
- Publication number
- CN108533422A CN108533422A CN201810063722.XA CN201810063722A CN108533422A CN 108533422 A CN108533422 A CN 108533422A CN 201810063722 A CN201810063722 A CN 201810063722A CN 108533422 A CN108533422 A CN 108533422A
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- water
- alcohol
- engine
- fuel
- diesel
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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
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/025—Adding water
- F02M25/028—Adding water into the charge intakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02D19/0686—Injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
-
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0221—Details of the water supply system, e.g. pumps or arrangement of valves
- F02M25/0225—Water atomisers or mixers, e.g. using ultrasonic waves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses a kind of Alcohol engines water mixing spraying systems, including diesel fuel supply device, diesel injection device, alcohol supplier, alcohols injection apparatus, engine electric-controlled unit and engine block, it is characterised in that:After the Aalcohols fuel of the alcohol supplier output is mixed with the water of the output of a water system in an alcohol water mixer, output to the alcohols injection apparatus sprays into engine.The present invention is on the basis of methanol/diesel oil double combustion engines, the characteristics of using water and methanol infinitely dissolve, increase alcohol water mixer on defeated alcohol track, utilize the advantage of the high evaporation latent heat of water, intake air temperature is reduced in big load, and then temperature when reducing compression top center, slow down engine combustion rate, engine is avoided to generate pinking, so as to improve the methanol substitution rate of engine, the combustion zone for expanding double fuel burning, improves the thermal efficiency of engine, reduces the NOx and particulate emission of engine.
Description
Technical field
The invention belongs to engine fuel injection technical fields, more particularly to a kind of Alcohol engines water mixing spraying system
And water mixing injection method.
Background technology
University Of Tianjin's Yao Chun morals etc. 2011 volume 17 it is first-phase《Combustion science and technology》On deliver《Diesel oil first
The combustion characteristics and emission performance of alcohol combined burning pressure boosting common rail engine》In, diesel oil/first is used on pressure boosting common rail engine
Alcohol combined burning pattern carries out combustion characteristic analysis and emission performance analysis, studies have shown that diesel oil/Methanol Compound Combustion Mode pattern tool
Have the advantages that postpone ignition time, improve constant volume burning degree, reduce cylinder temperature and delivery temperature, the combustion of fuel can be greatly improved
Efficiency is burnt, for adding M100(Pure methanol)And M90(Aqueous 10% methanol aqueous solution)Discharge capacity compared, show
M90 ratios M100 can more reduce formaldehyde, NOX, HC and CO discharge.
Chen Kai of mercantile marine institute of University Of Ningbo etc. was the fourth phase in 2011《Vehicle and power technology》On deliver《Diesel oil-
The application study of methanol-water hybrid fuel on a diesel engine》It tests on certain diesel engine and is tested using Diesel Oil-methanol respectively
Liquid, Diesel Methanol experimental liquid and pure diesel oil compare the thermal efficiency and pollutant emission situation of three kinds of experimental liquids, test result
Show:Diesel oil mixes burning methanol and the rate of economizing gasoline of methanol-water reaches 6%-14%, and soot emissions reduce, wherein mixing burning aqueous methanol
Economy is more preferable.
At present for methanol diesel-oil engine, it is substantially carried out direct diesel injection in cylinder+air intake duct methanol injection, carries out bavin
Oil pressure fires ignite methanol mixture combustion or intake port injection methanol, lights burning.In the burning of methanol diesel-oil double fuel, put
Heating rate tends to unimodal, and the time of occurrence of exothermic peak has been postponed in the penetrating of methanol, and burning delay period extends so that heat liberation rate, heat release rate peak value
It is higher than pure diesel fuel mode, drastically the exothermic heat of reaction time also shorten, under methanol diesel-oil double fuel combustion mode, combustion heat release compares bavin
Oily pattern is more concentrated, efficiency of combustion higher, but it is excessively high also to bring Part load in-cylinder pressure rate of rise, ignition temperature mistake
Height easily causes pinking, causes the serious consequence of Remedy for Piston Damage.
Invention content
Present invention aims at the defect for existing methanol diesel-oil engine, provide it is a kind of using methanol, ethyl alcohol etc. with
The Alcohol engines water mixing spraying system and water mixing injection method of the alcohols of water infinitely dissolve.
The present invention to achieve the above object, adopts the following technical scheme that:
A kind of Alcohol engines water mixing spraying system, including diesel fuel supply device, diesel injection device, alcohol supplier, alcohol
Class injection apparatus, engine electric-controlled unit and engine block, it is characterised in that:The Aalcohols fuel of the alcohol supplier output
After being mixed in an alcohol water mixer with the water of the output of a water system, output to alcohols injection apparatus penetrating is started
Machine;The mixing of the engine electric-controlled unit control alcohols and water and diesel fuel supply device, diesel injection device, alcohols supply
Device, the work of alcohols injection apparatus.
It is further characterized by:The diesel oil that the diesel fuel supply device includes diesel fuel tanks, is arranged in the diesel fuel tanks
Oil transfer pump;
The diesel injection device includes high-pressure oil pump and multiple diesel injectors, for spraying high pressure fuel;
The alcohol supplier includes Aalcohols fuel case and the Aalcohols fuel being arranged in Aalcohols fuel case pump;
The water system includes water tank and the water pump that is arranged in the water tank;
The alcohols injection apparatus includes multiple Aalcohols fuel injectors.
Further:It is respectively arranged with pressure sensor in the water supply line and alcohol water mixer.
The Aalcohols fuel injector is mounted on engine air inlet tube, and Aalcohols fuel is ejected into air inlet pipe;Or it is described
Aalcohols fuel injector is mounted on engine inlets, and Aalcohols fuel is ejected into air intake duct;Or the Aalcohols fuel injection
Device is covered mounted on cylinder, and Aalcohols fuel is ejected into cylinder.
Preferably:The alcohol supplier and alcohols injection apparatus being ejected into air inlet pipe or air intake duct, supply and injection
Pressure is 0.35 ~ 1.2MPa;The alcohol supplier and alcohols injection apparatus being ejected into cylinder, supply and injection pressure be 5 ~
30MPa。
Further:The alcohol water mixer include mix body and be arranged in the mixer body water stream channel,
Aalcohols fuel channel and mixed liquor channel;Throttle valve is provided in the water stream channel for controlling flow break-make;The alcohols
Non-return valve control Aalcohols fuel flowing is provided in fuel channel;It is provided with connection in the water stream channel of the throttle valve rear end
Channel is connected with the Aalcohols fuel channel of the non-return valve rear end;Mixed water and Aalcohols fuel are logical through the mixed liquor
Road sprays.
The interface channel and the angle in mixed liquor channel are 30 ° ~ 90 °.
The throttle valve is the triangular groove type throttle valve containing triangular groove type restriction spool;Triangular groove on the spool
It is oppositely arranged, the triangular groove axial angle is 25 ° ~ 40 °, and radial angle is 20 ° ~ 30 °.
Porous plate is provided at the mixed liquor feeder connection, the porous plate is perpendicular to direction of flow;The porous plate
On number of openings be 5 ~ 24, radially around porous plate end face center axis around distribution, the through-bore axis with it is porous
Plate end face angle is 30 ° ~ 60 °.
A kind of Alcohol engines water mixing injection method based on above-mentioned Alcohol engines water mixing spraying system, it is characterised in that
Including following jet modes:
Pure diesel fuel mode:When engine coolant temperature is less than 65 DEG C, control unit controls diesel injector and sprays diesel oil;
Diesel oil -ol class mixed combustion mode:When engine coolant temperature is more than or equal to 65 DEG C, engine electric-controlled unit control
Aalcohols fuel injector sprays Aalcohols fuel;
Diesel oil -ol class mixed liquor mixed combustion mode:When engine load reaches 30% or more, engine electric-controlled unit control
Water system and alcohol water mixer, which are opened, carries out water mixing, and Aalcohols fuel substitution rate is gradually increased with engine load, Aalcohols fuel
Substitution rate is 0 ~ 95%(It is calculated according to diesel oil and the total fuel value of Aalcohols fuel), mass fraction model of the water in alcohol-water mixture
Enclose is 0% ~ 20%.
The present invention is on the basis of methanol/diesel oil double combustion engine, the characteristics of using water and methanol infinitely dissolve, defeated
Increase alcohol water mixer on alcohol track, using the advantage of the high evaporation latent heat of water, intake air temperature is reduced in big load, and then drop
Temperature when low compression top center slows down engine combustion rate, avoids engine from generating pinking, so as to improve engine
Methanol substitution rate expands the combustion zone of double fuel burning, improves the thermal efficiency of engine, reduce the NOx and particle of engine
Discharge.
Description of the drawings
Fig. 1 is structure of the invention principle schematic.
Fig. 2 is alcohol water mixer structural schematic diagram.
Fig. 3 a- Fig. 3 c are throttling valve core structural schematic diagram in alcohol water mixer.
Fig. 4 is non-return valve structural schematic diagram.
Fig. 5 a- Fig. 5 c are perforated plate construction schematic diagram.
Specific implementation mode
As shown in Figure 1, a kind of started using common four cylinder engine manifold injection methanol as the alcohols of typical case
Machine water mixing spraying system, including diesel fuel supply device, diesel injection device, methanol feedway, methanol injection apparatus, for water system
System, engine electric-controlled unit 7 and engine block 8.
Diesel fuel supply device includes diesel fuel tanks 10, diesel oil transfer pump 11 is arranged in diesel fuel tanks 10.
Diesel injection device includes high-pressure oil pump 9 and four diesel injectors 14, is used for four high compression ignitions of cylinder injection
Oil.
Methanol feedway includes methanol tank 4 and the methanol pump 5 that is arranged in methanol tank 4,
Water system includes water tank 1 and the water pump 2 that is arranged in water tank 1.Pressure sensor 13 is provided in water supply line.
Methanol injection apparatus includes four methanol injectors 6 being separately positioned in motor intake manifold.
After the methanol of methanol feedway output and the water of water system output mix in alcohol water mixer 3, output is extremely
Methanol injection apparatus sprays into engine.Pressure sensor 12 is provided in alcohol water mixer 3.
Engine electric-controlled unit 7 controls the mixing of first alcohol and water and diesel fuel supply device, diesel injection device, methanol supply
To device, the work of methanol injection apparatus.
Likewise, methanol injector may be mounted on engine air inlet tube, methanol or methyl alcohol mixed liquor are ejected into air inlet
In pipe;It can also be mounted on engine inlets and be ejected into air intake duct;Or it covers and is ejected into mounted on cylinder
In cylinder.The methanol feedway and methanol injection apparatus being ejected into air inlet pipe or air intake duct, supply and injection pressure be 0.35 ~
1.2MPa;The methanol feedway and methanol injection apparatus being ejected into cylinder, supply and injection pressure are 5 ~ 30MPa.
As shown in Fig. 2, alcohol water mixer 3 includes the water stream channel for mixing body 301 and being arranged in mixing body 301
309, methanol channel 310 and mixed liquor channel 312.Three containing triangular groove type restriction spool are provided in water stream channel 309
Angle groove control valve, for controlling flow break-make.Throttle valve includes cartridge sleeve 302 and spool 303, the triangle on spool 303
Slot is oppositely arranged as shown in Fig. 3 a- Fig. 3 b, triangular groove axial angleθIt is 25 ° ~ 40 °, radial angleФIt is 20 ° ~ 30 °.Methanol is logical
Non-return valve control methanol mobile is provided in road 310.As shown in figure 4, non-return valve includes unidirectional valve sleeve 304, ball valve
305 and spring 306.310 setting side by side up and down of water stream channel 309 and methanol channel, mixed liquor channel 312 is located at methanol channel
310 rear ends, it is coaxial with methanol channel 310.It is provided with interface channel in the water stream channel 309 of triangular groove type throttle valve rear end
311 are connected with the methanol channel 310 of non-return valve rear end.As shown in Figure 3a, interface channel 311 and mixed liquor channel 312
AngleαIt is 30 ° ~ 90 °.312 inlet of mixed liquor channel is provided with porous plate 308.As shown in Fig. 5 a- Fig. 5 c, porous plate 308
Perpendicular to direction of flow;Number of openings on porous plate 308 is 5 ~ 24, is radially surround around porous plate end face center axis
Distribution, through-bore axis and porous plate end plane angleβIt is 30 ° ~ 60 °.Mixed water and Aalcohols fuel are sprayed through mixed liquor channel.
For the ease of the processing of interface channel 311, it is coaxially disposed processing hole 307 with interface channel 311, processing hole is used in processing hole 307
Plug is clogged.
A kind of Alcohol engines water mixing injection method, engine electric-controlled unit 7 is according to engine water temperature, rotating speed, air inlet pressure
The signals such as power, intake air temperature judge the diesel oil sprayed needed for per engine cycle, methanol quality, control methanol injector 6 and bavin
Oil ejector 14 is sprayed.Wherein when engine coolant temperature is less than 65 DEG C, engine electric-controlled unit 7 controls diesel oil spray
Emitter 14 sprays diesel oil, and engine is in pure diesel fuel mode.When coolant temperature is more than or equal to 65 DEG C, engine electric-controlled unit
7 control methanol injectors 6 spray methanol fuel, and diesel engine carries out Diesel Methanol mixed firinor fuel burning.When engine load reaches 30%
When above, engine electric-controlled unit 7 controls water system and alcohol water mixer 3 is opened and carries out water mixing, and diesel engine carries out diesel oil-first
Alcohol mixed liquor is mixed and burned.Methanol substitution rate is gradually increased with underload to moderate duty, and methanol substitution rate is 0 ~ 95%(According to
Diesel oil is calculated with the total fuel value of methanol), mass fraction of the water in alcohol-water mixture ranging from 0% ~ 20%, wherein specific injection
Amount is determined according to oil consumption under each operating mode with discharge value optimum target.Under the conditions of above-mentioned engine operating condition, according to engine
CMPS Camshaft Position Sensor signal, methanol injector 6 carry out methanol injection according to each cylinder working sequence.Engine electric-controlled unit 7
By pressure sensor 12, pressure sensor 13 obtains 3 internal pressure of alcohol water mixer and aqueduct pressure, according to pressure
Difference controls the opening and closing of methanol pump 5 and water pump 2, makes pressure difference value in stable region, and wherein hydraulic pipeline pressure is higher than methanol
Transfer pipeline pressure is determined the displacement of control spool by water demand, valve discharge characteristic under the pressure difference value, the speed load
(Engine electric-controlled unit 7 is by controlling step motor control displacement)So that in engine larger load, water is together with methanol
Into in cylinder.Since methyl alcohol vaporizing latent heat is very big, the latent heat of vaporization of water is twice of methanol or so, it is possible thereby to make intake air temperature
It reduces, increases coefficient of charge, temperature when reducing initiation temperature in cylinder, and then reducing compression top center slows down engine combustion speed
Rate avoids engine from generating pinking, so as to improve the methanol substitution rate of engine, expands the combustion zone of double fuel burning
The thermal efficiency of engine is improved in domain, reduces the NOx and particulate emission of engine.
Claims (10)
1. a kind of Alcohol engines water mixing spraying system, including diesel fuel supply device, diesel injection device, alcohol supplier,
Alcohols injection apparatus, engine electric-controlled unit and engine block, it is characterised in that:The alcohols combustion of the alcohol supplier output
After material is mixed with the water of the output of a water system in an alcohol water mixer, output to alcohols injection apparatus penetrating is started
Machine;The mixing of the engine electric-controlled unit control alcohols and water and diesel fuel supply device, diesel injection device, alcohols supply
Device, the work of alcohols injection apparatus.
2. Alcohol engines water mixing spraying system according to claim 1, it is characterised in that:
The diesel oil transfer pump that the diesel fuel supply device includes diesel fuel tanks, is arranged in the diesel fuel tanks;
The diesel injection device includes high-pressure oil pump and multiple diesel injectors, for spraying high pressure fuel;
The alcohol supplier includes Aalcohols fuel case and the Aalcohols fuel being arranged in Aalcohols fuel case pump;
The water system includes water tank and the water pump that is arranged in the water tank;
The alcohols injection apparatus includes multiple Aalcohols fuel injectors.
3. Alcohol engines water mixing spraying system according to claim 2, it is characterised in that:The water supply line and alcohol water
Pressure sensor is respectively arranged in mixer.
4. Alcohol engines water mixing spraying system according to claim 2, it is characterised in that:The Aalcohols fuel injector
On engine air inlet tube, Aalcohols fuel is ejected into air inlet pipe;Or the Aalcohols fuel injector is mounted on engine
On air intake duct, Aalcohols fuel is ejected into air intake duct;Or the Aalcohols fuel injector is covered mounted on cylinder, alcohols
In fuel injection to cylinder.
5. Alcohol engines water mixing spraying system according to claim 4, it is characterised in that:It is ejected into air inlet pipe or air inlet
Alcohol supplier in road and alcohols injection apparatus, supply and injection pressure are 0.35 ~ 1.2MPa;The alcohols being ejected into cylinder
Feedway and alcohols injection apparatus, supply and injection pressure are 5 ~ 30MPa.
6. according to claim 1-5 any one of them Alcohol engines water mixing spraying systems, it is characterised in that:The alcohol water is mixed
Clutch includes water stream channel, Aalcohols fuel channel and the mixed liquor channel for mixing body and being arranged in the mixer body;Institute
It states and is provided with throttle valve in water stream channel for controlling flow break-make;It is provided with non-return valve control in the Aalcohols fuel channel
Aalcohols fuel flows;The alcohols of interface channel and the non-return valve rear end is provided in the water stream channel of the throttle valve rear end
Fuel channel is connected;Mixed water and Aalcohols fuel are sprayed through the mixed liquor channel.
7. Alcohol engines water mixing spraying system according to claim 6, it is characterised in that:The interface channel and mixing
The angle in liquid channel is 30 ° ~ 90 °.
8. Alcohol engines water mixing spraying system according to claim 6, it is characterised in that:The throttle valve is to contain three
The triangular groove type throttle valve of chamfered groove formula restriction spool;Triangular groove on the spool is oppositely arranged, and the triangular groove axially presss from both sides
Angle is 25 ° ~ 40 °, and radial angle is 20 ° ~ 30 °.
9. Alcohol engines water mixing spraying system according to claim 6, it is characterised in that:The mixed liquor feeder connection
Place is provided with porous plate, and the porous plate is perpendicular to direction of flow;Number of openings on the porous plate is 5 ~ 24, in radiation
Shape is around porous plate end face center axis around 30 ° ~ 60 ° of distribution, the through-bore axis and porous plate end plane angle.
10. a kind of Alcohol engines water mixing spray based on any one of the claim 1-9 Alcohol engines water mixing spraying systems
Shooting method, it is characterised in that including following jet modes:
(1)Pure diesel fuel mode:When engine coolant temperature is less than 65 DEG C, control unit controls diesel injector and sprays bavin
Oil;
(2)Diesel oil -ol class mixed combustion mode:When engine coolant temperature is more than or equal to 65 DEG C, engine electric-controlled unit
It controls Aalcohols fuel injector and sprays Aalcohols fuel;
(3)Diesel oil -ol class mixed liquor mixed combustion mode:When engine load reaches 30% or more, engine electric-controlled unit control
Water system processed and alcohol water mixer, which are opened, carries out water mixing, and Aalcohols fuel substitution rate is gradually increased with engine load, alcohols combustion
Expect that substitution rate is 0 ~ 95%(It is calculated according to diesel oil and the total fuel value of Aalcohols fuel), mass fraction of the water in alcohol-water mixture
Ranging from 0% ~ 20%.
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CN201810063722.XA CN108533422A (en) | 2018-01-23 | 2018-01-23 | A kind of Alcohol engines water mixing spraying system and water mixing injection method |
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CN201810063722.XA CN108533422A (en) | 2018-01-23 | 2018-01-23 | A kind of Alcohol engines water mixing spraying system and water mixing injection method |
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Family
ID=63485517
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112895919A (en) * | 2020-06-12 | 2021-06-04 | 太原理工大学 | Methanol range extender applied to electric automobile |
WO2023097378A1 (en) * | 2021-11-30 | 2023-06-08 | Sousa Dario Donizete | Ethanol and biodiesel supply system for diesel cycle engine |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN112895919A (en) * | 2020-06-12 | 2021-06-04 | 太原理工大学 | Methanol range extender applied to electric automobile |
WO2023097378A1 (en) * | 2021-11-30 | 2023-06-08 | Sousa Dario Donizete | Ethanol and biodiesel supply system for diesel cycle engine |
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