CN108757255A - Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine - Google Patents
Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine Download PDFInfo
- Publication number
- CN108757255A CN108757255A CN201810535755.XA CN201810535755A CN108757255A CN 108757255 A CN108757255 A CN 108757255A CN 201810535755 A CN201810535755 A CN 201810535755A CN 108757255 A CN108757255 A CN 108757255A
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- China
- Prior art keywords
- engine
- oil
- fuel
- fie
- injection equipment
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- 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.)
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- 239000000446 fuel Substances 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 title claims abstract description 47
- 239000007924 injection Substances 0.000 title claims abstract description 47
- 239000000295 fuel oil Substances 0.000 claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000000889 atomisation Methods 0.000 claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 8
- 230000009977 dual effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000567 combustion gas Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002352 surface water 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
- F02M67/00—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
- F02M67/02—Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type the gas being compressed air, e.g. compressed in pumps
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of heavy fuel burning engine fuel injection equipment (FIE) and aero-engines, fuel injection equipment (FIE) includes fuel nozzle, premixer and oil-air mixing nozzle, the injector of fuel nozzle and the compressed air outlet of compressed air system are respectively positioned on premixer, oil-air mixing nozzle is connected to the combustion chamber that the mixed oil and gas of fuel oil and air is sent into engine by premixer, the fuel injection configuration for being atomized and being premixed using auxiliary air is installed on inventive engine cylinder head, heavy oil is enabled to realize more adequately atomization, uniform combustion mixture is formed after good mixing, it can also efficiently organize to burn, ensure heavy oil in the dynamic property applied to engine, economy and emission performance, it realizes energy saving after heavy oil is applied to engine, environmental protection and low cost.
Description
Technical field
The present invention relates to engine and application, more particularly to a kind of heavy fuel burning engine fuel injection equipment (FIE) and aeroplane engine
Machine.
Background technology
Fuel of the heavy oil as engine, will be as the power trend of small and medium size unmanned aerial vehicles；But heavy oil viscosity is high, low temperature stream
Dynamic property is poor, causes atomizing effect poorer than common light oil, affects combustion efficiency, even result in engine start difficulty with
And discharge is not up to standard.
In the prior art, in order to ensure that heavy fuel burning engine can have good atomization and startup, have and use carburetion
The fuel system such as device+auxiliary preheating technology, mechanical injection (fuel direct injection), electronic fuel injection；Wherein electronic fuel injection is adopted
With auxiliary air, fuel particles are impacted using pressure-air, realize that the abundant atomization of fuel oil, effect are better than first two side
Formula.But opportunity, overall structure and the air degree of participation of air addition could not be optimized, it is still original EFI in structure
Mode then cannot achieve the reliable atomization of heavy oil and fuel combination can not be organized efficiently to burn, also allows for heavy oil application
It is unable to reach the effect of expectation in the dynamic property, economy and emission performance of engine, to make the application of heavy oil can not be a wide range of
It is universal.
Therefore, it is necessary to be improved to existing heavy fuel burning engine, heavy oil is enabled to realize more adequately atomization, and
The burning of fuel-efficient can be organized, ensures that heavy oil in the dynamic property, economy and emission performance applied to engine, realizes heavy oil
Applied to after engine energy-saving and environmental protection and low cost.
Invention content
In view of this, the object of the present invention is to provide a kind of heavy fuel burning engine fuel injection equipment (FIE) and aero-engine,
It enables to heavy oil to realize more adequately atomization, and the burning of fuel-efficient can be organized, ensure heavy oil applied to starting
Dynamic property, economy and the emission performance of machine realize the energy-saving and environmental protection after heavy oil is applied to engine and low cost.
The heavy fuel burning engine fuel injection equipment (FIE) of the present invention, including fuel nozzle, premixer and oil-air mixing nozzle, it is described
Have injector and the compressed air inlet of fuel nozzle in premixer, the oil-air mixing nozzle connection premixer by fuel oil and
Mixed oil and gas after the atomization that compressed air is formed in premixer is sent into the combustion chamber of engine；Existed using auxiliary low pressure air
Premix and the fuel oil that further atomizing fuel nozzle sprays are realized in premixer, ensure later stage direct-injection enter behind combustion chamber formed compared with
To be more fully atomized, to realize the abundant burning and utilization of heavy oil；It not only ensure that the further atomization of fuel droplet, also
Can guarantee between auxiliary air and droplet it is uniform mix, into combustion chamber after being capable of homogenous combustion；Fuel nozzle generally uses
EFI mode, details are not described herein.
Further, when the fuel injection equipment (FIE) is installed on engine cylinder head, the injection direction of the oil-air mixing nozzle
It is 16 ° -20 °；The structure makes the gaseous mixture that in-cylinder direct-jet enters corresponding with the igniting orientation of spark plug, near spark plug
Dense combustion gas mixing area is formed, is further mixed conducive to burning air, to organize the burning of fuel-efficient；Oil-air mixing nozzle
Injection direction be suitable in heavy oil atomization property and adapt to heavy fuel burning engine dual ignition plug sparking mode, be conducive to group
It knits igniting and final obtain fully is burnt.
Further, the premixer has compressed air inlet, and the atomizer gos deep into premixer and injector is more than pressure
Contracting air intake；The structure not only facilitates the compact layout of all parts, also so that compressed air enter premixer be to be formed it is disorderly
Streaming is impacted, and is conducive to further atomization and uniformly mixing, is reached atomization and mixed dual purpose, to the direct-injection for the later stage
Preferable basic role is played with burning.
Further, the oil spout direction of the atomizer is consistent with the injection channel direction of oil-air mixing nozzle, the oil spout
Spacing between the injector and oil-air mixing nozzle entrance of mouth is 5-8mm, ensure that mounting structure neatly compactly, and ensure
The efficient injection of fuel oil is conducive to air and forms impact and turbulent flow；Suitable spacing range, be conducive to heavy oil it is abundant be atomized and it is equal
Enter oil-air mixing nozzle after even mixing, and ensures injection pressure.
The invention also discloses a kind of aero-engine, the aero-engine is equipped with the heavy fuel burning engine fuel oil
Injection apparatus.
Beneficial effects of the present invention：The heavy fuel burning engine fuel injection equipment (FIE) and aero-engine of the present invention, fuel oil injection
Device has the fuel injection configuration of premix, enables to heavy oil to realize more adequately atomization, is formed after good mixing
Uniform combustion mixture, additionally it is possible to organize the burning of fuel-efficient, ensure heavy oil in dynamic property, the economy applied to engine
Property and emission performance, realize heavy oil be applied to engine after energy-saving and environmental protection and low cost.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram that the present invention is installed on engine；
Fig. 2 is schematic structural view of the invention.
Specific implementation mode
As shown in the figure：The heavy fuel burning engine fuel injection equipment (FIE) of the present embodiment, including fuel nozzle 6, premixer 7 and oil gas
Mixing nozzle 8 has the injector and compressed air inlet (namely air compression system of fuel nozzle 6 in the premixer 7
Compressed air outlet), the oil-air mixing nozzle 8 is connected to premixer 7 and forms fuel oil and compressed air in premixer
Mixed oil and gas after atomization is sent into the combustion chamber of engine；Premix and further is realized in premixer using auxiliary low pressure air
The fuel oil that atomizing fuel nozzle sprays ensures that later stage direct-injection enters behind combustion chamber to be formed and is more more fully atomized, to realize
The abundant burning and utilization of heavy oil；This premix atomization is different from the impact atomization of the simple pressure air of the prior art, no
But ensure that the further atomization of fuel droplet, moreover it is possible to ensure between auxiliary air and droplet it is uniform mix, into combustion chamber
After being capable of homogenous combustion；Fuel nozzle generally uses EFI mode, and details are not described herein.
As shown, fuel oil ejection assemblies are tightly connected shape by fuel nozzle 6, premixer 7 and oil-air mixing nozzle 8 successively
At, it is tightly connected to be formed by mounting base 10 between fuel nozzle 6 and oil-air mixing nozzle 8 and fix, and premixer is directly formed
It is simple and compact for structure in mounting base 10；Fuel nozzle is equipped with fuel inlet fitting 61, and premixer 7 is empty by pneumatic fitting 9, compression
The compressed air outlet of 16 connect compressor of tracheae；The air inlet 91 of premixer is the gas outlet of pneumatic fitting 9.
The dual ignition plug formed by spark plug I 3 and spark plug II 4 is installed, the mounting structure of spark plug is to stretch on cylinder head 2
Combustion chamber is lighted a fire, and details are not described herein for mounting structure, and igniting is provided using dual ignition plug, the characteristic with high-energy ignition,
In conjunction with air-assisted atomization above-mentioned and premix scheme, ensure engine various operating modes and under the conditions of reliable and secure point
Fire further decreases engine volume and weight relative to traditional heavy oil compression ignition engine, is suitable for unmanned plane use.
In the present embodiment, when the fuel injection equipment (FIE) is installed on engine cylinder head, the oil-air mixing nozzle 8 and spark
It fills in II 4 and is respectively in I 3 both sides of spark plug, the injection direction of the oil-air mixing nozzle is 16 ° -20 °, preferably 18 °；Spark plug II
Igniting angle be 40 ° -50 °, preferably 45 °, igniting angle refer to spark plug axis direction angle；What angle here referred to
All it is the angle with cylinder center line, details are not described herein；The structure makes the gaseous mixture that in-cylinder direct-jet enters through top land
It is corresponding with the igniting orientation of spark plug after cylinder body wall surface water conservancy diversion, it is formed about dense combustion gas mixing area in spark plug, and be conducive to
It is further mixed with burning air, to form efficient tissue burning；The injection direction of oil-air mixing nozzle be suitable in
The atomization property of heavy oil and the sparking mode for adapting to dual ignition plug are fully burnt conducive to tissue igniting and final obtain.
In the present embodiment, the spark plug I 3 be located at top of combustion chamber centre position or near, due to I 3, spark plug
In centre position or near, the structure ensure that spark plug II 4 and 8 structure of oil-air mixing nozzle arrangement on also is located at center line, spray
It is conducive to be sufficiently mixed and adequately burn after penetrating and lighting a fire.
In the present embodiment, coplanar arrangement between the oil-air mixing nozzle 8, spark plug II 4 and spark plug I 3, and this is coplanar
It is spatially substantially vertical with the plane where inlet and exhaust valve；Coplanar arrangement refers to oil-air mixing nozzle 8, II 4 and of spark plug
The axis of spark plug I 3 is located on the same face, and it is same flat that the plane where inlet and exhaust valve refers to that the axis of inlet and exhaust valve is located at
Face；It is substantially vertical to refer to that the two is formed vertical in the range of error allows；The structure ensure that all parts on cylinder head
Simple-arranged, while being sufficiently mixed conducive to air inlet and combustion gas, are further atomized conducive to tumble flow is formed, ensure that uniform high-efficiency
Burning.
In the present embodiment, there is compressed air inlet 91, the atomizer 6 to go deep into premixer and oil spout for the premixer 7
Mouth is more than compressed air inlet 91；As shown, the center line of the compressed air inlet 91 and with the injector of atomizer 6
Centerline substantially vertical (it is of course also possible to appropriate tilting, vertically further facilitate layout and is conducive to mist in same plane
Change), which not only facilitates the compact layout of all parts, also so that it is to form turbulent flow type punching that compressed air, which enters premixer,
It hits, is conducive to further atomization and uniformly mixing, reaches atomization and mixed dual purpose, to be direct-injection and the burning in later stage
Play preferable basic role.
In the present embodiment, the oil spout direction of the atomizer 6 is consistent with the injection channel direction of oil-air mixing nozzle 8, institute
The spacing stated between the injector of atomizer and oil-air mixing nozzle entrance is 5-8mm, ensure that mounting structure neatly compactly,
And ensure that the efficient injection of fuel oil, it is conducive to air and forms impact and turbulent flow；Suitable spacing range is conducive to the abundant mist of heavy oil
Change and enter oil-air mixing nozzle after evenly mixing, and ensure injection pressure, ensure that mounting structure neatly compactly, and ensure
The efficient injection of fuel oil is conducive to air and forms impact and turbulent flow.
In the present embodiment, coordinates the device of the invention, precombustion chamber 17 is also machined on the cylinder head 2 of engine, it is described
Precombustion chamber 17 is to be formed along the Laval nozzle structure of plug ignition direction (axis direction of spark plug), the Bearing score
Your nozzle structure is formed directly into cylinder head and jet port connection combustion chamber；The precombustion chamber course of work is sprayed in fuel combination
After entering combustion chamber, while entering precombustion chamber, after being lighted a fire by spark plug (ignition point is located at the inlet end of Laval nozzle), expansion
And (speed more higher than combustion explosion) is rapidly sprayed by the jet port of Laval nozzle by throat by Laval nozzle, it is right
Fuel combination into combustion chamber, which further impacts to have, makes the well-mixed effect of gas, is conducive to form uniform burning mixing
Gas, meanwhile, precombustion chamber can accelerate flame transmission, improve efficiency of combustion, promote engine power and reduce risk for knock, also
The burning of fuel-efficient can be organized, ensures that heavy oil in the dynamic property, economy and emission performance applied to engine, realizes heavy oil
Applied to after engine energy-saving and environmental protection and low cost.
In the present embodiment, precombustion chamber is set at spark plug I and the ignitor of the spark plug I stretches into precombustion
Room；Main spark plug is in the middle part of combustion chamber or nearby, the burning gases that precombustion chamber sprays more conducively mix entire combustion chamber
It closes gas and forms disturbance and fully burning.
The invention also discloses a kind of aero-engine, the aero-engine is equipped with the heavy fuel burning engine fuel oil
Injection apparatus, as shown, fuel injection equipment (FIE) is installed on the cylinder head 2 of engine, piston component 5 is installed in cylinder body 1, and should
Engine is suitable for unmanned plane.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (8)
1. a kind of heavy fuel burning engine fuel injection equipment (FIE), it is characterised in that：It is sprayed including fuel nozzle, premixer and air-fuel mixture
Mouth has in the premixer injector and the compressed air inlet of fuel nozzle, the oil-air mixing nozzle to be connected to premixer
Mixed oil and gas after the atomization that fuel oil and compressed air are formed in premixer is sent into the combustion chamber of engine.
2. heavy fuel burning engine fuel injection equipment (FIE) according to claim 1, it is characterised in that：The fuel injection equipment (FIE) peace
When loaded on engine cylinder head, the injection direction of the oil-air mixing nozzle is 16 ° -20 °.
3. heavy fuel burning engine fuel injection equipment (FIE) according to claim 1, it is characterised in that：The atomizer deeply premixes
Room and injector are more than compressed air inlet.
4. heavy fuel burning engine fuel injection equipment (FIE) according to claim 1, it is characterised in that：The oil spout side of the atomizer
To consistent with the injection channel direction of oil-air mixing nozzle.
5. heavy fuel burning engine fuel injection equipment (FIE) according to claim 1, it is characterised in that：The injector of the atomizer
Spacing between oil-air mixing nozzle entrance is 5-8mm.
6. heavy fuel burning engine fuel injection equipment (FIE) according to claim 3, it is characterised in that：The compressed air inlet
Center line and with the centerline of the injector of atomizer in same plane.
7. heavy fuel burning engine fuel injection equipment (FIE) according to claim 6, it is characterised in that：The compressed air inlet
Center line and substantially vertical with the center line of the injector of atomizer.
8. a kind of aero-engine, it is characterised in that：The aero-engine is equipped with claim 1 to 7 any claim
Heavy fuel burning engine fuel injection equipment (FIE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535755.XA CN108757255A (en) | 2018-05-29 | 2018-05-29 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535755.XA CN108757255A (en) | 2018-05-29 | 2018-05-29 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757255A true CN108757255A (en) | 2018-11-06 |
Family
ID=64003902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810535755.XA Withdrawn CN108757255A (en) | 2018-05-29 | 2018-05-29 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757255A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848066A (en) * | 2019-09-30 | 2020-02-28 | 广西擎芯动力科技有限公司 | Ignition type two-stroke heavy oil piston engine |
| CN115929527A (en) * | 2023-01-10 | 2023-04-07 | 北京理工大学 | Air-assisted injection device suitable for aviation heavy oil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195787A (en) * | 1992-01-22 | 1993-08-03 | Yamaha Motor Co Ltd | Fuel injection type two-cycle engine |
| JPH07127453A (en) * | 1993-10-29 | 1995-05-16 | Isuzu Motors Ltd | Auxiliary chamber type gas engine |
| US20040079322A1 (en) * | 2002-10-29 | 2004-04-29 | Hitachi, Ltd. | Control apparatus for internal combustion engine and control method for internal combustion engine combustion method for internal combustion engine and direct injection engine |
| US20060169241A1 (en) * | 2003-11-19 | 2006-08-03 | Dan Merritt | Internal combustion engine |
| CN208763799U (en) * | 2018-05-29 | 2019-04-19 | 重庆隆鑫发动机有限公司 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
-
2018
- 2018-05-29 CN CN201810535755.XA patent/CN108757255A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195787A (en) * | 1992-01-22 | 1993-08-03 | Yamaha Motor Co Ltd | Fuel injection type two-cycle engine |
| JPH07127453A (en) * | 1993-10-29 | 1995-05-16 | Isuzu Motors Ltd | Auxiliary chamber type gas engine |
| US20040079322A1 (en) * | 2002-10-29 | 2004-04-29 | Hitachi, Ltd. | Control apparatus for internal combustion engine and control method for internal combustion engine combustion method for internal combustion engine and direct injection engine |
| US20060169241A1 (en) * | 2003-11-19 | 2006-08-03 | Dan Merritt | Internal combustion engine |
| CN208763799U (en) * | 2018-05-29 | 2019-04-19 | 重庆隆鑫发动机有限公司 | Heavy fuel burning engine fuel injection equipment (FIE) and aero-engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848066A (en) * | 2019-09-30 | 2020-02-28 | 广西擎芯动力科技有限公司 | Ignition type two-stroke heavy oil piston engine |
| CN115929527A (en) * | 2023-01-10 | 2023-04-07 | 北京理工大学 | Air-assisted injection device suitable for aviation heavy oil |
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| 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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181106 |