CN208763764U - Heavy End Aviation Fuel engine and aircraft - Google Patents
Heavy End Aviation Fuel engine and aircraft Download PDFInfo
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- CN208763764U CN208763764U CN201820816773.0U CN201820816773U CN208763764U CN 208763764 U CN208763764 U CN 208763764U CN 201820816773 U CN201820816773 U CN 201820816773U CN 208763764 U CN208763764 U CN 208763764U
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- guide portion
- spark plug
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- oil
- piston
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- 239000000446 fuel Substances 0.000 title claims abstract description 83
- 239000000295 fuel oil Substances 0.000 claims abstract description 52
- 238000002156 mixing Methods 0.000 claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 230000000712 assembly Effects 0.000 claims abstract description 20
- 238000000429 assembly Methods 0.000 claims abstract description 20
- 238000000889 atomisation Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 13
- 230000009977 dual effect Effects 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 8
- 239000008246 gaseous mixture Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a kind of Heavy End Aviation Fuel engine and aircrafts, the top surface of piston forms the spill guide portion sinking relative to piston-top surface, the outermost point of lateral surface radially is more than or flushes in the fuel injection direction of fuel oil ejection assemblies, lead surface is radially-inwardly more than the ignition location of center spark plug, the top surface of the utility model piston spill guide portion sinking relative to piston-top surface corresponding with the injection direction of fuel oil ejection assemblies, the fuel of penetrating is guided to plug ignition region, optimize piston-top surface, to optimize combustion chamber, change compression ratio, reduce risk for knock, enhance tumble flow effect simultaneously, heavy oil is enabled to realize more adequately atomization mixing, uniform combustion mixture is formed after good mixing, it can also organize the burning of fuel-efficient, guarantee that heavy oil is being applied to engine Dynamic property, economy and emission performance realize energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
Description
Technical field
The utility model relates to engine and application, in particular to a kind of Heavy End Aviation Fuel engine and aircraft.
Background technique
Fuel of the heavy oil as engine will become the power trend of middle-size and small-size aircraft；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 guarantee that heavy fuel burning engine can have good atomization and starting, have and use carburetion
The fuel system such as device+auxiliary preheating technology, mechanical injection (fuel direct injection), electronic fuel injection.But due to heavy oil itself
Property problem is unable to reach the fogging degree of general oil product, and can not uniformly mix between combustion air, is being lighted
Original EFI ignition way can not be used when starting；It is run even if using ignition way, then also due to burning not
Sufficiently lead to a series of engine problems, cannot achieve the reliable atomization of heavy oil and fuel combination can not be organized efficiently to fire
It burns, dynamic property, economy and the emission performance for also allowing for heavy oil applied to engine are unable to reach the effect of expectation, to make weight
The application of oil can not be popularized on a large scale.
Therefore, it is necessary to be improved to existing heavy fuel burning engine, enable to heavy oil realize more adequately atomization and
Uniform mixing, and the burning of fuel-efficient can be organized, guarantee heavy oil in dynamic property, economy and the row for being applied to engine
Putting property realizes energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
Utility model content
In view of this, being enabled to the purpose of the utility model is to provide a kind of Heavy End Aviation Fuel engine and aircraft
Heavy oil realizes more adequately atomization and uniform mixing, and can organize the burning of fuel-efficient, guarantees that heavy oil is being applied to
Dynamic property, economy and the emission performance of engine realize energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
The Heavy End Aviation Fuel engine of the utility model, including cylinder body, cylinder head and piston component, combustion chamber on cylinder head by processing
Combustion chamber face formed, i.e., the combustion chamber of engine is the sky surrounded by the combustion chamber face of cylinder head and the piston-top surface of piston component
Between constitute, as shown, the piston of piston component is located in cylinder body；The cylinder head is equipped with the fuel oil for injecting fuel into combustion chamber
Ejection assemblies；The top surface of piston forms the spill guide portion sinking relative to piston-top surface；The spill guide portion and fuel oil spray
The fuel injection direction for penetrating component is corresponding, lateral surface, bottom and the extraction successively seamlessly transitted including radially ecto-entad
Face, the outermost point of the lateral surface radially is more than or flushes in the fuel injection direction of fuel oil ejection assemblies, described to draw
It appears radially-inwardly more than the ignition location of center spark plug；After the i.e. described fuel oil ejection assemblies deliver fuel to spill guide portion
Fuel is guided to plug ignition region by spill guide portion；The setting position of spill guide portion need to be located at fuel oil ejection assemblies
Opposite position, spill guide portion is using reflecting and being formed guidance when fuel injection, conducive to tumble flow is formed, conducive to being further formed
Impact atomization and mixing, and the structure changes compression ratio, reduces risk for knock.
Further, the lead surface is in generally vertical from bottom or is slightly tilted to spill guide portion outside upwards, lateral surface,
The transition structure of bottom and lead surface, drainage effect are smooth；Since lead surface has been over the ignition zone of center spark plug,
Biggish tumble flow is directly formed after fuel hits lead surface by injection, up to center spark plug under the constraint of lead surface
Ignition zone so that the abundant ignition of fuel in entire spill guide portion, has preferable guidance effect, further mixes
Merge finely disintegrated fuel, and is conducive to going on smoothly for igniting；It is generally vertical to refer to can permit the condition with certain error
Under be vertically arranged, be also possible to the curved surface being vertically arranged, uneven sliding surface etc., allow that there is lesser inclination etc., above-mentioned
In generally vertical range；The whistle tilts the inclination for referring to allowing having certain low-angle outward, belongs to those skilled in the art
The data parameters that member is able to confirm that in process.
It further, further include the second spill guide portion sinking relative to piston-top surface, second spill guides position
In the side of the spill guide portion diametrically, and the second spill guide portion passes through gentle an inclined-plane and spill guide portion
The upper edge of lead surface seamlessly transits, and the second spill guide portion has the second lead surface, second lead surface with it is described
It is located at the bottom rounding off of the second spill guide portion between gentle inclined-plane；Air-flow can reflect after spraying to spill guide portion
Out and enter the second spill guide portion, and the second spill guide portion provides smooth ignition conducive to while being further formed tumble flow
Condition, especially the second spill guide portion is generally used for dual ignition plug structure, positioned at the ignition zone of another spark plug, shape
At the smooth and uniform ignition of dual ignition plug.
Further, second lead surface from the bottom of the second spill guide portion be in upwards it is generally vertical or slightly to second it is recessed
Inclination on the outside of shape guide portion；Generally vertical structure directly forms biggish rolling after fuel hits the second lead surface by injection
Stream, up to ignition zone under the constraint of the second lead surface, the combustion so that fuel in entire spill guide portion is sufficiently lighted a fire
It burns, there is preferable guidance effect, further mixing and finely disintegrated fuel, and be conducive to going on smoothly for igniting.
Further, the upper edge of the lead surface is higher than piston-top surface, which can further constrain the fuel of penetrating
Guidance upwards, ensure that the ignition zone for accumulating in center spark plug, and be conducive to the abundant realization of tumble flow；The upper edge of lateral surface
It seamlessly transits with piston-top surface, connects smooth transition between the upper edge of lead surface and the upper edge of lateral surface along two sides；Second
The bottom of spill guide portion is seamlessly transitted by the upper edge of the lead surface on gentle an inclined-plane and spill guide portion, and described second
It is located at the bottom rounding off of the second spill guide portion between lead surface and the gentle inclined-plane；The upper edge of second lead surface
To piston-top surface longitudinal edge along upward gentle dip transition；The second spill guide portion is formed spill guide portion by two sides
Semi-surrounding；After the semi-surrounding structure may make the fuel for being injected into spill guide portion to carry out preliminary mixing, tumble flow, part is fired
Material is flowed out by two sides, and enters the second spill guide portion by two sides under the shunting of higher lead surface, is drawn by second
The shock formation in face is sufficiently mixed rear inlet point flame range domain, conducive to being sufficiently mixed and smooth ignition.
It further, further include fuel oil ejection assemblies, the fuel oil ejection assemblies include that fuel nozzle, premixer and oil gas are mixed
Nozzle is closed, there is the jet and compressed air inlet (the namely pressure of air compression system of fuel nozzle in the premixer
Contracting air outlet slit), after the atomization that oil-air mixing nozzle connection premixer forms fuel oil and compressed air in premixer
Mixed oil and gas be sent into engine combustion chamber；It is realized in premixer using auxiliary low pressure air and premixes and be further atomized combustion
The fuel oil that oil burner nozzle sprays guarantees that later period direct-injection enters behind combustion chamber to be formed and is more more fully atomized, to realize heavy oil
Full combustion and utilization；It not only ensure that the further atomization of fuel droplet, moreover it is possible to guarantee equal between auxiliary air and droplet
Even mixing, into combustion chamber after being capable of homogenous combustion；Fuel nozzle generally uses EFI mode, and details are not described herein.
Further, the dual ignition plug formed by spark plug I and spark plug II is installed, the spark plug I is on the cylinder head
Center spark plug；The oil-air mixing nozzle and spark plug II are respectively in I two sides of spark plug；Center line, the fire of the spark plug I
Flower plug II center line and oil-air mixing nozzle center line it is substantially coplanar, it is substantially coplanar refer to allow to have certain error,
Such as lesser inclination and dislocation, have no effect on the understanding coplanar to this programme；On passing through the coplanar section, the oil gas
The injection direction of mixing nozzle is tilted to center from top to bottom；Radial position of the upper edge of the lead surface on piston-top surface
It is inwardly more than the ignition location of spark plug I, radial position of the upper edge of second lead surface on piston-top surface surpasses outward
Cross the ignition location of spark plug II；The position of lead surface and the second lead surface makes the fuel base of the oil-air mixing nozzle injection
This face spill guide portion and spill guide portion and the second spill guide portion by the abundant tumble flow of fuel and introduce ignition zone；It is practical
Superolateral surface and lead surface are respectively formed the front and back sides (according to air-flow general direction) of spill guide portion, and the second lead surface position
In the corresponding position with spark plug II, in the second spill guide portion, air-flow is entered by two sides and in the pact of the second spill guide portion
Reached under beam and rush at ignition zone along the second lead surface after the second lead surface, there is preferable tumble flow effect, sufficiently provide by
Fuel introduces the space of ignition zone, is uniformly mixed, and is conducive to igniting and full and uniform burning, prevents pinking.
Further, the spark plug I and spark plug II opposite tilt from top to bottom, the combustion chamber face on cylinder head is intermediate attached
Nearly downwardly projecting and lower protruding parts and spark plug I are correspondingly formed the inclined-plane substantially vertical with its axis, substantially vertical finger
It is to allow that there is the vertical of certain error, ensure that the craftsmanship of mounting stability and manufacture, and the inclined-plane draws lead surface
Gaseous mixture out has certain guiding function, so that spark plug has preferable ignition results；The upper edge of the lead surface
Radially it is no more than spark plug I, conducive to the abundant extraction process for extending fuel, gathers conducive to fuel in ignition zone.
Further, the injection direction of the oil-air mixing nozzle is 16 ° -20 °；The igniting angle of spark plug II is 40 °-
50°；The injection direction of oil-air mixing nozzle is suitable for the sparking mode of atomization property and adaptation dual ignition plug in heavy oil,
Conducive to tissue igniting and final full combustion.
The invention also discloses a kind of aircraft, the aircraft is equipped with the Heavy End Aviation Fuel engine.
The utility model has the beneficial effects that the Heavy End Aviation Fuel engine and aircraft of the utility model, the top surface of piston with
The corresponding spill guide portion sinking relative to piston-top surface of the injection direction of fuel oil ejection assemblies, the fuel of penetrating is guided
To plug ignition region, piston-top surface is optimized, to optimize combustion chamber, changes compression ratio, reduces risk for knock, simultaneously
Enhance tumble flow effect, enables to heavy oil to realize more adequately atomization mixing, form uniform burning after good mixing
Gaseous mixture, additionally it is possible to organize the burning of fuel-efficient, guarantee heavy oil in dynamic property, economy and the discharge for being applied to engine
Property, realize energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is the engine structure schematic diagram of the utility model；
Fig. 2 is fuel oil ejection assemblies structural schematic diagram.
Fig. 3 is piston perspective view；
Fig. 4 is piston radial to cross-sectional view.
Specific embodiment
It is as shown in the figure: the Heavy End Aviation Fuel engine of the present embodiment, including cylinder body 5, cylinder head 13 and piston component, as schemed institute
Show, the piston 1 of piston component is located in cylinder body 5；The cylinder head is equipped with the fuel oil ejection assemblies a for injecting fuel into combustion chamber；
The top surface of piston 1 forms the spill guide portion 2 sinking relative to piston-top surface；The spill guide portion 2 and fuel oil ejection assemblies
Fuel injection direction it is corresponding, lateral surface 21, bottom 22 and the lead surface successively seamlessly transitted including radially ecto-entad
23, the outermost point of the lateral surface 21 radially is more than or flushes in the fuel injection directions of fuel oil ejection assemblies and (refer to
Be in the injection of fuel oil component, and the position of piston makes spill guide portion correspond to injection direction), the lead surface 23 is radial
It is inwardly more than the ignition location of center spark plug；The i.e. described fuel oil ejection assemblies are drawn after delivering fuel to spill guide portion by spill
Portion is led to guide fuel to plug ignition region；The setting position of spill guide portion need to be located at the opposite portion of fuel oil ejection assemblies
Position, spill guide portion is using reflecting and being formed guidance when fuel injection, conducive to tumble flow is formed, conducive to impact atomization is further formed
And mixing, and the structure changes compression ratio, reduces risk for knock.
In the present embodiment, the lead surface 23 is in generally vertical from bottom or is slightly tilted to spill guide portion outside upwards,
Lateral surface, bottom and lead surface transition structure, drainage effect is smooth；Since lead surface has been over the point of center spark plug
Flame range domain directly forms biggish tumble flow after fuel hits lead surface by injection, under the constraint of lead surface up in
The ignition zone of heart spark plug, so that the abundant ignition of fuel in entire spill guide portion, has preferable guidance effect,
Further mixing and finely disintegrated fuel, and it is conducive to going on smoothly for igniting；It is generally vertical to refer to can permit with certain mistake
It is vertically arranged under conditions of difference, is also possible to the curved surface being vertically arranged, uneven sliding surface etc., allow that there is lesser inclination etc.,
In above-mentioned generally vertical range；The whistle tilts the inclination for referring to allowing having certain low-angle outward, belongs to ability
The data parameters that field technique personnel are able to confirm that in process.
It further include the second spill guide portion 3 sinking relative to 1 top surface of piston in the present embodiment, second spill is drawn
It leads portion 3 and is located at the side of the spill guide portion 2 diametrically, the second spill guide portion has the second lead surface 33；Gas
Stream is being sprayed to can reflect and enter the second spill guide portion 3 after spill guide portion 2, and the second spill guide portion 3 be conducive into
While one step forms tumble flow, the condition of smooth ignition is provided, especially the second spill guide portion is generally used for dual ignition plug
Structure forms the smooth and uniform ignition of dual ignition plug positioned at the ignition zone of another spark plug.
In the present embodiment, second lead surface 33 by the second spill guide portion 3 bottom 32 upwards in generally vertical or
Slightly to inclination on the outside of the second spill guide portion；Generally vertical structure is directly formed after fuel hits the second lead surface by injection
Biggish tumble flow, up to ignition zone under the constraint of the second lead surface, so that the fuel in entire spill guide portion fills
Divide ignition, with preferable guidance effect, further mixes simultaneously finely disintegrated fuel, and be conducive to going on smoothly for igniting.
In the present embodiment, the upper edge of the lead surface 23 is higher than 1 top surface of piston, which can be by the fuel of penetrating into one
Step constraint guidance upwards, extends and draws process, ensure that the ignition zone for accumulating in center spark plug, and be conducive to the abundant of tumble flow
It realizes；The upper edge of lateral surface 21 and piston-top surface seamlessly transit, the upper edge of the upper edge of lead surface 23 and lateral surface 21 it
Between connect smooth transition along two sides；The bottom 32 of second spill guide portion 3 passes through gentle an inclined-plane 31 and spill guide portion 2
The upper edge of lead surface 23 seamlessly transits, and the second spill is located between second lead surface 33 and the gentle inclined-plane 31 and is drawn
Lead 32 rounding off of bottom in portion；The upper edge of second lead surface 33 to piston-top surface longitudinal edge along upward gentle dip
It crosses；The second spill guide portion 3 forms semi-surrounding to spill guide portion 2 by two sides；The semi-surrounding structure, which may make, to be injected into
Enter spill guide portion fuel carry out preliminary mixing, tumble flow after, part of fuel is flowed out by two sides, and in higher lead surface
Shunting under by two sides enter the second spill guide portion, rear inlet point flame range is sufficiently mixed by the shock of the second lead surface formation
Domain, conducive to being sufficiently mixed and smooth ignition.
In the present embodiment, the fuel oil ejection assemblies a includes fuel nozzle 6, premixer 7 and oil-air mixing nozzle 8, described
(compressed air of namely air compression system goes out for the jet for having fuel nozzle 6 in premixer 7 and compressed air inlet
Mouthful), the oil-air mixing nozzle 8 is connected to the mixing after the atomization that premixer 7 forms fuel oil and compressed air in premixer
The combustion chamber of oil gas feeding engine；Premix and further atomizing fuel nozzle are realized in premixer using auxiliary low pressure air
The fuel oil of ejection guarantees that later period direct-injection enters behind combustion chamber to be formed and is more more fully atomized, to realize the abundant combustion of heavy oil
It burns and utilizes；This premix atomization is different from the impact atomization of the simple pressure air of the prior art, not only ensure that fuel oil
The further atomization of droplet, moreover it is possible to guarantee between auxiliary air and droplet it is uniform mix, into combustion chamber after can uniformly fire
It burns；Fuel nozzle generally uses EFI mode, and details are not described herein.
As shown, fuel oil ejection assemblies are successively tightly connected shape by fuel nozzle 6, premixer 7 and oil-air mixing nozzle 8
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.
In the present embodiment, the dual ignition plug formed by spark plug I 14 and spark plug II 4, the fire are installed on the cylinder head
Flower plug I is center spark plug；The oil-air mixing nozzle 8 is respectively in I 14 two sides of spark plug with spark plug II 4, i.e., radially
Three's arrangement；Igniting is provided using dual ignition plug, the characteristic with high-energy ignition, in conjunction with air-assisted atomization above-mentioned and in advance
Mixed scheme, guarantee engine various operating conditions and under the conditions of reliable and secure igniting, start relative to traditional heavy oil is compression-ignited
Machine further decreases engine volume and weight, is suitable for aircraft (aircraft etc.) use；The structure enters in-cylinder direct-jet
Gaseous mixture it is corresponding with the igniting orientation of spark plug, be formed about dense combustion gas mixing area in spark plug, be conducive to and combustion air
Further mixing, to organize the burning of fuel-efficient；The center line and oil of the center line of the spark plug I 14, spark plug II 4
The center line of gas mixing nozzle 8 is substantially coplanar, it is substantially coplanar refer to allow to have certain error, such as lesser inclination and mistake
Position, has no effect on the understanding coplanar to this programme；On passing through the coplanar section, the injection direction of the oil-air mixing nozzle
It is tilted from top to bottom to center；Radial position of the upper edge of the lead surface on piston-top surface is inwardly more than spark plug I 14
Ignition location, radial position of the upper edge of second lead surface 33 on piston-top surface is more than spark plug II 4 outward
Ignition location；The position of lead surface and the second lead surface draws the basic face spill of fuel of the oil-air mixing nozzle injection
It leads portion and spill guide portion and the second spill guide portion by the abundant tumble flow of fuel and introduces ignition zone；Practical superolateral surface and draw
The front and back sides (according to air-flow general direction) of spill guide portion are respectively formed, and the second lead surface is located at and spark plug II
Corresponding position, in the second spill guide portion, air-flow by two sides enter and reach second under the constraint of the second spill guide portion
Ignition zone is rushed at along the second lead surface after lead surface, there is preferable tumble flow effect, sufficiently provide and introduce the fuel into igniting
The space in region is uniformly mixed, and is conducive to igniting and full and uniform burning, is prevented pinking.
In the present embodiment, the spark plug I 14 and spark plug II 4 opposite tilt from top to bottom, the combustion chamber face on cylinder head
The downwardly projecting and lower protruding parts and spark plug I 14 are correspondingly formed the inclined-plane substantially vertical with its axis, base near centre
Originally it vertically refers to allowing to have the vertical of certain error, ensure that the craftsmanship of mounting stability and manufacture, and the inclined-plane pair
There is certain guiding function in the gaseous mixture that lead surface is drawn, so that spark plug has preferable ignition results.
In the present embodiment, the oil-air mixing nozzle 8 is respectively in I 14 two sides of spark plug with spark plug II 4, and the oil gas is mixed
The injection direction for closing nozzle is 16 ° -20 °, preferably 18 °；The igniting angle of spark plug II is 40 ° -50 °, preferably 45 °, igniting folder
Angle refers to the angle of the axis direction of spark plug；What angle (including injection direction) here referred to is all the folder with cylinder center line
Angle, details are not described herein；The structure makes the gaseous mixture of in-cylinder direct-jet entrance after the drainage of the spill guide portion of top land, with
The igniting orientation of spark plug is corresponding, is formed about dense combustion gas mixing area in spark plug, and be conducive to further mix with combustion air
It closes, to form efficient tissue burning；The injection direction of oil-air mixing nozzle be suitable in heavy oil atomization property and
The sparking mode of dual ignition plug is adapted to, tissue igniting and final full combustion are conducive to.
In the present embodiment, the spark plug I 14 is located at the middle position or neighbouring (center spark plug) of top of combustion chamber, by
In spark plug I 14 it is centrally located or near, be correspondingly arranged with spark plug II 4, the punching of fuel that oil-air mixing nozzle 8 is sprayed
To I 14 ignition zone of spark plug and it is distributed in the ignition zone of spark plug II 4, is conducive to after being sufficiently mixed and lighting a fire after injection
Adequately burning.
The upper and lower of the utility model refers to orientation corresponding with piston-top surface, for piston, top surface direction
Refer to, under being toward piston skirt, relative to cylinder head direction be it is upper, under cylinder body is；Top land is provided with for avoiding valve
Escape groove, belong to the needs in structure, details are not described herein.
The invention also discloses a kind of aircraft, the aircraft is equipped with the Heavy End Aviation Fuel engine.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (10)
1. a kind of Heavy End Aviation Fuel engine, including cylinder body, cylinder head and piston component, it is characterised in that: the cylinder head is equipped with will
The fuel oil ejection assemblies of fuel penetrating combustion chamber；The top surface of piston forms the spill guide portion sinking relative to piston-top surface；
The spill guide portion is corresponding with the fuel injection direction of fuel oil ejection assemblies, including radially ecto-entad is successively put down
Slip over the lateral surface crossed, bottom and lead surface, the outermost point of the lateral surface radially is more than or flushes in fuel oil injection
The fuel injection direction of component, the lead surface are radially-inwardly more than the ignition location of center spark plug.
2. Heavy End Aviation Fuel engine according to claim 1, it is characterised in that: the lead surface is in basic by bottom upwards
Vertically or slightly to inclination on the outside of spill guide portion.
3. Heavy End Aviation Fuel engine according to claim 2, it is characterised in that: further include sinking relative to piston-top surface
Second spill guide portion, the second spill guide portion are located at the side of the spill guide portion diametrically, and described second is recessed
Shape guide portion has the second lead surface.
4. Heavy End Aviation Fuel engine according to claim 3, it is characterised in that: second lead surface is drawn by the second spill
The bottom for leading portion is in generally vertical or slightly to inclination on the outside of the second spill guide portion upwards.
5. Heavy End Aviation Fuel engine according to claim 4, it is characterised in that: the upper edge of the lead surface is higher than piston
Top surface, the upper edge of lateral surface and piston-top surface seamlessly transit, along two between the upper edge of lead surface and the upper edge of lateral surface
Side connects smooth transition；The top that the bottom of second spill guide portion passes through the lead surface on gentle an inclined-plane and spill guide portion
Along smooth transition, the round and smooth mistake in bottom of the second spill guide portion is located between second lead surface and the gentle inclined-plane
It crosses；The upper edge of second lead surface to piston-top surface longitudinal edge along upward gentle dip transition；The second spill guide portion
Semi-surrounding is formed to spill guide portion by two sides.
6. Heavy End Aviation Fuel engine according to claim 5, it is characterised in that: the fuel oil ejection assemblies include fuel oil spray
Mouth, premixer and oil-air mixing nozzle have jet and the compressed air inlet of fuel nozzle, the oil in the premixer
Gas mixing nozzle is connected to premixer and starts the mixed oil and gas feeding after atomization that fuel oil and compressed air are formed in premixer
The combustion chamber of machine.
7. Heavy End Aviation Fuel engine according to claim 6, it is characterised in that: installation is by I He of spark plug on the cylinder head
The dual ignition plug that spark plug II is formed, the spark plug I are center spark plug；The oil-air mixing nozzle and spark plug II divide column
In I two sides of spark plug；The center line of the center line of the spark plug I, the center line of spark plug II and oil-air mixing nozzle is basic
It is coplanar, by the way that on the coplanar section, the injection direction of the oil-air mixing nozzle is tilted to center from top to bottom；It is described to draw
Radial position of the upper edge appeared on piston-top surface is inwardly more than the ignition location of spark plug I, second lead surface
Radial position of the upper edge on piston-top surface is more than the ignition location of spark plug II outward.
8. Heavy End Aviation Fuel engine according to claim 7, it is characterised in that: the spark plug I and spark plug II are by upper
To lower opposite tilt, the combustion chamber face on cylinder head correspond to spark plug I position is downwardly projecting and the lower protruding parts and spark
Plug I is correspondingly formed the inclined-plane substantially vertical with its axis.
9. Heavy End Aviation Fuel engine according to claim 7, it is characterised in that: the injection direction of the oil-air mixing nozzle
It is 16 ° -20 °；The igniting angle of spark plug II is 40 ° -50 °.
10. a kind of aircraft, it is characterised in that: the aircraft is equipped with the aviation weight of claim 1 to 9 any claim
Oil turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816773.0U CN208763764U (en) | 2018-05-29 | 2018-05-29 | Heavy End Aviation Fuel engine and aircraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816773.0U CN208763764U (en) | 2018-05-29 | 2018-05-29 | Heavy End Aviation Fuel engine and aircraft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208763764U true CN208763764U (en) | 2019-04-19 |
Family
ID=66127366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820816773.0U Expired - Fee Related CN208763764U (en) | 2018-05-29 | 2018-05-29 | Heavy End Aviation Fuel engine and aircraft |
Country Status (1)
| Country | Link |
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| CN (1) | CN208763764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757209A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | Heavy End Aviation Fuel engine and aircraft |
-
2018
- 2018-05-29 CN CN201820816773.0U patent/CN208763764U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757209A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | Heavy End Aviation Fuel engine and aircraft |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |