CN208763766U - Heavy End Aviation Fuel engine and aircraft - Google Patents

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, and bottom is in outer side to forming strip projected parts protruding upward between lead surface；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 heavy oil in the dynamic property for being applied to engine, economy and emission performance, realize the energy conservation that heavy oil is applied to after engine, environmental protection and low cost.

Description

Heavy End Aviation Fuel engine and aircraft

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, as shown, piston component Piston be located in cylinder body；The cylinder head is equipped with the fuel oil ejection assemblies for injecting fuel into combustion chamber；The top surface of piston is formed The spill guide portion sinking relative to piston-top surface；The spill guide portion is opposite with the fuel injection direction of fuel oil ejection assemblies It answers, lateral surface, bottom and the lead surface successively seamlessly transitted including radially ecto-entad, the lateral surface is radially Outermost point is more than or flushes in the fuel injection direction of fuel oil ejection assemblies, and the lead surface is radially-inwardly more than center spark plug Ignition location；The i.e. described fuel oil ejection assemblies are guided fuel to fire by spill guide portion after delivering fuel to spill guide portion Spark plug ignition region；The bottom is in outer side to forming strip projected parts protruding upward between lead surface；Strip projected parts for The fuel of injection has preferable repercussion effect, and drainage portion fuel is shunted to two sides, relatively uniform to flow to lead surface, Further such that air-flow is uniformly distributed, to be conducive to igniting；The setting position of spill guide portion need to be located at fuel oil ejection assemblies phase Pair position, spill guide portion is using reflecting and being formed guidance when fuel injection, conducive to tumble flow is formed, conducive to punching is further formed Atomization and mixing are hit, and the structure changes compression ratio, reduces risk for knock.

Further, the cross section of the strip projected parts is trapezium structure, is put down between the upper bottom of the trapezium structure and side It slips over and crosses, side is seamlessly transitted to the bottom, and flat by fillet between strip projected parts both ends and lateral surface and lead surface It slips over and crosses；Structure is seamlessly transitted while guaranteeing tumble flow effect, there is better shunting effect, trapezoidal cross section is more conducive to The partial flows of fuel form regular motion homogeneous mixing, avoid detonation；The lead surface is in substantially perpendicular by bottom upwards Directly or slightly to inclination on the outside of spill guide portion, lateral surface, bottom and lead surface transition structure, drainage effect is smooth；Due to drawing The ignition zone for having been over center spark plug directly forms biggish rolling after fuel hits lead surface by injection Stream, up to the ignition zone of center spark plug under the constraint of 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；Substantially It refers to can permit with being vertically arranged under conditions of certain error vertically, is also possible to the curved surface being vertically arranged, injustice Sliding surface etc. allows to have lesser inclination etc., in above-mentioned generally vertical range；The whistle tilts refer to allowing outward Inclination with certain low-angle belongs to the data parameters that those skilled in the art are 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 Intersect transition 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 Intersect transition to piston-top surface；The second spill guide portion forms semi-surrounding to spill guide portion by two sides；The semi-surrounding knot After structure may make the fuel for being injected into spill guide portion to carry out preliminary mixing, tumble flow, part of fuel is flowed out by two sides, and Enter the second spill guide portion by two sides under the shunting of higher lead surface, is formed by the shock of the second lead surface sufficiently mixed Inlet point flame range domain after conjunction, 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 Fig. 3 along sectional view along A-A；

Fig. 5 is Fig. 3 along B-B direction 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 13 is equipped with the fuel oil ejection assemblies for injecting fuel into combustion chamber a；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 injection group The fuel injection direction of part is corresponding, lateral surface 21, bottom 22 and the extraction successively seamlessly transitted including radially ecto-entad Face 23, the outermost point of the lateral surface 21 radially are more than or flush in the fuel injection directions of fuel oil ejection assemblies and (refer to Be fuel oil component injection when, and the position of piston make spill guide portion correspond to injection direction), 23 diameter of lead surface To the ignition location for being inwardly more than center spark plug；The i.e. described fuel oil ejection assemblies deliver fuel to after spill guide portion by spill Guide portion guides fuel to plug ignition region；The bottom is in outer side to forming item protruding upward between lead surface Shape protrusion 22a；Strip projected parts have preferable repercussion effect for the fuel of injection, and drainage portion fuel is shunted to two sides, Relatively uniform flows to lead surface, further such that air-flow is uniformly distributed, to be conducive to igniting；The setting position of spill guide portion The opposite position of fuel oil ejection assemblies need to be located at by setting, and spill guide portion is using reflecting and being formed guidance when fuel injection, conducive to shape At tumble flow, conducive to impact atomization and mixing is further formed, and the structure changes compression ratio, reduces risk for knock.

In the present embodiment, the cross section of the strip projected parts 22a is trapezium structure, the upper bottom of the trapezium structure and side Between seamlessly transit, side is seamlessly transitted to the bottom by fillet, and strip projected parts both ends and lateral surface and lead surface it Between pass through fillet seamlessly transit；Structure is seamlessly transitted while guaranteeing tumble flow effect, there is better shunting effect, it is trapezoidal Cross section be more conducive to the partial flows of fuel, form regular motion homogeneous mixing, avoid detonation；The lead surface 23 by Bottom is in generally vertical or slightly to inclination on the outside of spill guide portion upwards, lateral surface, bottom and lead surface transition structure, drainage Effect is smooth；It is straight after fuel is hit lead surface by injection since lead surface has been over the ignition zone of center spark plug It connects to form biggish tumble flow, up to the ignition zone of center spark plug under the constraint of lead surface, so that entire spill is drawn The abundant ignition of fuel in portion is led, there is preferable guidance effect, further mixing and finely disintegrated fuel, and be conducive to igniting It goes on smoothly；It is generally vertical to refer to can permit with being vertically arranged under conditions of certain error, it is also possible to set vertically The curved surface set, uneven sliding surface etc. allow to have lesser inclination etc., in above-mentioned generally vertical range；The whistle is outward Inclination refers to the inclination for allowing to have certain low-angle, belongs to the number that those skilled in the art are able to confirm that in process According to parameter.

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 intersects transition with piston-top surface, 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；Intersect transition with piston-top surface in the upper edge of second lead surface 33；The second spill guidance Portion 3 forms semi-surrounding to spill guide portion 2 by two sides, the semi-surrounding structure may make be injected into the fuel of spill guide portion into After the preliminary mixing of row, tumble flow, part of fuel is flowed out by two sides, and under the shunting of higher lead surface by two sides into the Two spill guide portions are sufficiently mixed rear inlet point flame range domain by the shock of the second lead surface 33 formation, conducive to be sufficiently mixed with And smooth ignition further shunts fuel to two sides, and form the tumble flow of more preferable effect due to the presence of strip projected parts 22a.

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 3 Ignition zone is rushed at along the second lead surface after lead surface 33, there is preferable tumble flow effect, sufficiently provide and introduce the fuel into a little The space in flame range domain 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；The bottom is on the outside Face is to forming strip projected parts protruding upward between lead surface.

2. Heavy End Aviation Fuel engine according to claim 1, it is characterised in that: the cross section of the strip projected parts is trapezoidal Structure seamlessly transits between the upper bottom of the trapezium structure and side, and side is seamlessly transitted to the bottom；The lead surface by Bottom is in generally vertical or slightly to inclination on the outside of spill guide portion upwards.

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 intersects transition with piston-top surface, 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；Intersect transition with piston-top surface in the upper edge of second lead surface；The second spill guide portion is by two sides to spill guide portion Form semi-surrounding.

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.