CN208763763U - The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine - Google Patents
The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine Download PDFInfo
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- CN208763763U CN208763763U CN201820816701.6U CN201820816701U CN208763763U CN 208763763 U CN208763763 U CN 208763763U CN 201820816701 U CN201820816701 U CN 201820816701U CN 208763763 U CN208763763 U CN 208763763U
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- engine
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- fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 31
- 230000009977 dual effect Effects 0.000 title claims abstract description 24
- 239000000295 fuel oil Substances 0.000 claims abstract description 46
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims description 39
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 230000001535 kindling effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 8
- 238000000889 atomisation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 4
- 230000008450 motivation Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 230000003116 impacting effect 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
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses the dual ignition plug cylinder head assemblies and aero-engine of a kind of heavy fuel burning engine, including cylinder head, the dual ignition plug formed by spark plug I and spark plug II is installed on the cylinder head, the utility model ignition energy with higher, especially cooperate to be sufficiently atomized and astatki after evenly mixing, heavy oil is enabled to realize more adequately efficient tissue burning, conducive to the efficient burning of heavy oil, guarantee engine various operating conditions and under the conditions of reliable and secure igniting, relative to traditional heavy oil compression ignition engine, further decrease engine volume and weight, it is suitable for unmanned plane use, it better reflects efficiently, the characteristic of environmental protection.
Description
Technical field
The utility model relates to engine and application, in particular to the dual ignition plug cylinder head assembly of a kind of heavy fuel burning engine and
Aero-engine.
Background technique
Fuel of the heavy oil as engine will become 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 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；Traditional heavy fuel burning engine base
This uses the combustion system of compression ignition, and cylinder body is needed to bear biggish pressure, thus increase the overall weight of cylinder body, bulky totality
It is mechanical can not to be suitable for the Miniature Vehicles such as unmanned plane；Meanwhile cannot achieve the efficient burning of heavy oil, it also allows for heavy oil and answers
The effect of expectation is unable to reach for the dynamic property, economy and emission performance of engine, to make the application of heavy oil can not big model
It encloses universal.
Therefore, it is necessary to improve to existing heavy fuel burning engine, heavy oil is enabled to realize more adequately efficient
Tissue burning, mitigates the overall weight of heavy fuel burning engine, guarantees heavy oil in dynamic property, economy and the discharge for being applied to engine
Property, it realizes energy-saving and environmental protection and low cost that heavy oil is applied to after engine, it is mechanical to be suitable for the Miniature Vehicles such as unmanned plane.
Utility model content
In view of this, the purpose of the utility model is to provide the dual ignition plug cylinder head assemblies and boat of a kind of heavy fuel burning engine
Bare weight oil turbine, ignition energy with higher enable to heavy oil to realize more adequately efficient tissue burning, mitigate
The overall weight of heavy fuel burning engine guarantees that heavy oil in dynamic property, economy and the emission performance for being applied to engine, realizes that heavy oil is answered
For the energy-saving and environmental protection and low cost after engine, it is mechanical to be suitable for the Miniature Vehicles such as unmanned plane.
The dual ignition plug cylinder head assembly of the heavy fuel burning engine of the utility model, including cylinder head, installation is by fire on the cylinder head
The dual ignition plug that flower plug I and spark plug II are formed；Ignition energy is greatly improved, conducive to the efficient burning of heavy oil, is especially cooperated
To be sufficiently atomized and astatki after evenly mixing, guarantee engine various operating conditions and under the conditions of reliable and secure igniting,
Relative to traditional heavy oil compression ignition engine, engine volume and weight is further decreased, is suitable for unmanned plane use, more can
Embody efficient, environmentally friendly characteristic.
Further, precombustion chamber is also machined on the cylinder head, the precombustion chamber is along plug ignition direction
The jet port of Laval nozzle structure, the Laval nozzle structure is connected to combustion chamber；The precombustion chamber course of work is to mix
After fuel is injected into combustion chamber, while entering precombustion chamber, (ignition point is located at the inlet end of Laval nozzle, should by spark plug
Inlet end is the mouth for Laval nozzle, rather than with combustion chamber) igniting after, expand simultaneously by Lavalle spray
Pipe rapidly sprays (speed more higher than combustion explosion), and further impacting to have to the fuel combination for entering combustion chamber fills gas
Divide mixed effect, conducive to uniform combustion mixture is formed, meanwhile, precombustion chamber can accelerate flame transmission, improve burning
Efficiency promotes engine power and reduces risk for knock, additionally it is possible to organize the burning of fuel-efficient, guarantee that heavy oil is being applied to hair
Dynamic property, economy and the emission performance of motivation realize energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
Further, the spark plug I be located at top of combustion chamber middle position or near, precombustion chamber is set to spark plug
At I and I ignitor of the spark plug protrudes into precombustion chamber；Main spark plug is in the middle part of combustion chamber or nearby, precombustion chamber sprays
Burning gases out are more conducive to the mixed Daqu disturbance of entire combustion chamber and full combustion.
It further, further include for the fuel oil ejection assemblies to combustion chamber inner direct fuel oil；The structure of in-cylinder direct-jet
It is higher after being formed after guaranteeing that later period direct-injection enters combustion chamber and being more more fully atomized in conjunction with twin ignition scheme
Ignition energy is conducive to realize the full combustion and utilization of heavy oil.
Further, the fuel oil ejection assemblies and spark plug II are respectively in I two sides of spark plug；The oil-air mixing nozzle
Injection direction is 16 ° -20 °；The igniting angle of spark plug II is 40 ° -50 °；The gaseous mixture that the structure enters in-cylinder direct-jet
It is corresponding with the igniting orientation of spark plug, it is formed about dense combustion gas mixing area in spark plug, is further mixed conducive to combustion air
It closes, to organize the burning of fuel-efficient；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.
Further, the spark plug I be located at top of combustion chamber middle position or near；The center line of the spark plug I,
The center line of spark plug II and the center line of oil-air mixing nozzle are substantially coplanar, and the coplanar plane with where inlet and exhaust valve exists
Spatially substantially vertical, it is same that co-planar arrangement refers to that the central axis of oil-air mixing nozzle, spark plug II and spark plug I is located at
On face, the plane where inlet and outlet door refers to that the axis of inlet and exhaust valve is generally aligned in the same plane, substantially coplanar and substantially vertical be
Refer to the error for allowing to have certain, such as lesser inclination and dislocation, has no effect on understanding coplanar to this programme and vertical；
The structure ensure that the simple-arranged of all parts on cylinder head, while be conducive to being sufficiently mixed for air inlet and combustion gas, be conducive to form rolling
It flows and is further atomized, ensure that the burning of uniform high-efficiency.
The invention also discloses a kind of heavy oil aero-engine, the heavy oil aero-engine is equipped with the weight
The dual ignition plug cylinder head assembly of oil turbine.
The utility model has the beneficial effects that the dual ignition plug cylinder head assembly of the heavy fuel burning engine of the utility model and aviation hair
Motivation, ignition energy with higher especially cooperate to be sufficiently atomized and astatki after evenly mixing, enable to weight
Oil realizes that more adequately efficient tissue burning guarantees engine in various operating conditions and condition conducive to the efficient burning of heavy oil
Under reliable and secure igniting further decrease engine volume and weight relative to traditional heavy oil compression ignition engine, be suitble to
It is used in unmanned plane, better reflects efficient, environmentally friendly characteristic.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is that the cylinder head assembly of the utility model is installed on engine structure schematic diagram.
Specific embodiment
It is as shown in the figure: the dual ignition plug cylinder head assembly of the heavy fuel burning engine of the present embodiment, including cylinder head 2, on the cylinder head
The dual ignition plug formed by spark plug I 3 and spark plug II 4 is installed；Ignition energy is greatly improved, conducive to the efficient burning of heavy oil,
Especially cooperate to be sufficiently atomized and astatki after evenly mixing, guarantee engine various operating conditions and under the conditions of reliably pacify
Full igniting further decreases engine volume and weight, is suitable for unmanned plane relative to traditional heavy oil compression ignition engine
It uses, better reflects efficient, environmentally friendly characteristic.
In the present embodiment, precombustion chamber 17 is also machined on the cylinder head, the precombustion chamber 17 is along spark plug point
The Laval nozzle structure of fiery direction (referring to spark plug axis direction) is formed, and the jet port of the Laval nozzle structure connects
Logical combustion chamber；The precombustion chamber course of work is, after fuel combination is injected into combustion chamber, while entering precombustion chamber, by spark
(ignition point is located at the inlet end of Laval nozzle to plug, which is rather than the and combustion chamber for Laval nozzle
The mouth of connection) igniting after, expand simultaneously by Laval nozzle rapidly pass through throat by Laval nozzle jet port spray (than fire
Decrepitate fries higher speed), further impacting to have to the fuel combination for entering combustion chamber makes the well-mixed effect of gas, benefit
In the uniform combustion mixture of formation, meanwhile, precombustion chamber can accelerate flame transmission, improve efficiency of combustion, promote engine
Power simultaneously reduces risk for knock, additionally it is possible to organize the burning of fuel-efficient, guarantee heavy oil in the dynamic property applied to engine, warp
Ji property and emission performance realize energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
In the present embodiment, precombustion chamber is set at spark plug I 3 and I 3 ignitor of the spark plug protrudes 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 full combustion.
In use, fuel oil ejection assemblies a is also installed on cylinder head, as shown, the fuel oil ejection assemblies a includes fuel oil spray
Mouth 6, premixer 7 and oil-air mixing nozzle 8 are realized premix and the fuel oil that further atomizing fuel nozzle sprays in premixer, are protected
Card later period direct-injection, which enters behind combustion chamber to be formed, to be more more fully atomized, to realize the full combustion and utilization of heavy oil；It is this
Premix atomization is different from the impact atomization of the simple pressure air of the prior art, not only ensure that the further mist of fuel droplet
Change, moreover it is possible to guarantee between auxiliary air and droplet it is uniform mix, into combustion chamber after being capable of homogenous combustion；In conjunction with dual ignition plug
High-energy ignition characteristic, enable heavy oil full combustion.
As shown, the piston of piston component 5 is installed on cylinder body 1, installation is by spark plug I 3 and spark plug II 4 on cylinder head 2
The dual ignition plug of formation, the mounting structure of spark plug are to protrude into combustion chamber to light a fire, and details are not described herein for mounting structure, uses
Dual ignition plug provides igniting, the characteristic with high-energy ignition, in conjunction with air-assisted atomization above-mentioned and premix scheme, guarantees hair
Motivation various operating conditions and under the conditions of reliable and secure igniting further decreased relative to traditional heavy oil compression ignition engine
Engine volume and weight is suitable for unmanned plane use.
In the present embodiment, (fuel oil ejection assemblies a) and spark plug II 4 are respectively in spark plug I 3 to the oil-air mixing nozzle 8
Two sides, the injection direction of the oil-air mixing nozzle are 16 ° -20 °, preferably 18 °；The igniting angle of spark plug II is 40 ° -50 °,
It is preferred that 45 °, igniting angle refers to the angle of the axis direction of spark plug；What angle here referred to is all the folder with cylinder center line
Angle, details are not described herein；The gaseous mixture that the structure enters in-cylinder direct-jet is after top land and cylinder body wall surface water conservancy diversion, with fire
The igniting orientation of Hua Sai is corresponding, is formed about dense combustion gas mixing area in spark plug, and be conducive to further mix with combustion air,
To form efficient tissue burning；The injection direction of oil-air mixing nozzle is suitable in the atomization property of heavy oil and adaptation
The sparking mode of dual ignition plug is conducive to tissue igniting and final full combustion.
In the present embodiment, the spark plug I 3 be located at top of combustion chamber middle position or near, due to I 3, spark plug
In middle 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 middle line, spray
It is conducive to be sufficiently mixed and adequately burn after penetrating and lighting a fire.
In the present embodiment, in the center line of the spark plug I 3, the center line and oil-air mixing nozzle 8 of spark plug II 4
Heart line is substantially coplanar, and the plane where the coplanar door with inlet and outlet is spatially substantially vertical, and co-planar arrangement refers to oil gas
The central axis of mixing nozzle 8, spark plug II 4 and spark plug I 3 is located on the same face, and the plane where inlet and outlet door refers to
The axis of inlet and exhaust valve is generally aligned in the same plane, it is substantially coplanar and it is substantially vertical refer to allow to have certain error, such as it is smaller
Inclination and dislocation, have no effect on understanding coplanar to this programme and vertical；The structure ensure that all parts on cylinder head
Simple-arranged, while being conducive to being sufficiently mixed for air inlet and combustion gas, it is further atomized conducive to tumble flow is formed, ensure that uniform high-efficiency
Burning.
The invention also discloses a kind of heavy oil aero-engine, the heavy oil aero-engine is equipped with the weight
The dual ignition plug cylinder head assembly of oil turbine, as shown, further include that the piston of piston component 5 is installed on cylinder body 1, the engine
Suitable for aircraft (nobody or manned).
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 (5)
1. a kind of dual ignition plug cylinder head assembly of heavy fuel burning engine, it is characterised in that: including cylinder head, installation is by fire on the cylinder head
The dual ignition plug that flower plug I and spark plug II are formed；Precombustion chamber is also machined on the cylinder head, the precombustion chamber is along kindling
The jet port of the Laval nozzle structure in spark plug ignition direction, the Laval nozzle structure is connected to combustion chamber；The spark plug I
Positioned at top of combustion chamber middle position or near, precombustion chamber is set at spark plug I and I ignitor of the spark plug is stretched
Enter precombustion chamber.
2. the dual ignition plug cylinder head assembly of heavy fuel burning engine according to claim 1, it is characterised in that: further include for
The fuel oil ejection assemblies of combustion chamber inner direct fuel oil.
3. the dual ignition plug cylinder head assembly of heavy fuel burning engine according to claim 2, it is characterised in that: the fuel oil injection
Component and spark plug II are respectively in I two sides of spark plug；The fuel oil ejection assemblies include fuel nozzle, premixer and air-fuel mixture
Nozzle；The injection direction of the oil-air mixing nozzle is 16 ° -20 °；The igniting angle of spark plug II is 40 ° -50 °.
4. the dual ignition plug cylinder head assembly of heavy fuel burning engine according to claim 3, it is characterised in that: the spark plug I
Center line, spark plug II center line and oil-air mixing nozzle center line it is substantially coplanar, and this is coplanar with inlet and outlet door institute
Plane it is spatially substantially vertical.
5. a kind of Heavy End Aviation Fuel engine, it is characterised in that: the engine is equipped with Claims 1-4 any claim
Heavy fuel burning engine dual ignition plug cylinder head assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816701.6U CN208763763U (en) | 2018-05-29 | 2018-05-29 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820816701.6U CN208763763U (en) | 2018-05-29 | 2018-05-29 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208763763U true CN208763763U (en) | 2019-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820816701.6U Expired - Fee Related CN208763763U (en) | 2018-05-29 | 2018-05-29 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757203A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
-
2018
- 2018-05-29 CN CN201820816701.6U patent/CN208763763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757203A (en) * | 2018-05-29 | 2018-11-06 | 重庆隆鑫发动机有限公司 | The dual ignition plug cylinder head assembly and aero-engine of heavy fuel burning engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190419 |