CN208294663U - The cylinder head and aero-engine of heavy fuel burning engine - Google Patents
The cylinder head and aero-engine of heavy fuel burning engine Download PDFInfo
- Publication number
- CN208294663U CN208294663U CN201820819707.9U CN201820819707U CN208294663U CN 208294663 U CN208294663 U CN 208294663U CN 201820819707 U CN201820819707 U CN 201820819707U CN 208294663 U CN208294663 U CN 208294663U
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- cylinder head
- engine
- spark plug
- precombustion chamber
- chamber
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- 239000000446 fuel Substances 0.000 title claims abstract description 40
- 238000002485 combustion reaction Methods 0.000 claims abstract description 47
- 230000009977 dual effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 1
- 239000000295 fuel oil Substances 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 11
- 239000000203 mixture Substances 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000000889 atomisation Methods 0.000 description 7
- 239000000567 combustion gas Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000008246 gaseous mixture Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 239000003921 oil Substances 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of cylinder head of heavy fuel burning engine and aero-engines, combustion chamber is formed by the combustion chamber face processed on cylinder head, precombustion chamber is also machined on cylinder head, precombustion chamber is located at plug ignition and has the jet port for being connected to combustion chamber, precombustion chamber is arranged in the utility model at the igniting of spark plug, and precombustion chamber has the jet port for being connected to combustion chamber, precombustion is indoor fired be ignited after sprayed by jet port, the fuel combination for entering combustion chamber is further impacted to have and makes the well-mixed effect of gas, conducive to the uniform combustion mixture of formation, simultaneously, precombustion chamber can accelerate flame transmission, improve efficiency of combustion, it promotes engine power and reduces risk for knock, 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, it realizes Heavy oil is applied to energy-saving and environmental protection and low cost after engine.
Description
Technical field
The utility model relates to engine and application, in particular to the cylinder head and aero-engine of a kind of heavy fuel burning 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；Wherein electronic fuel injection is adopted
With auxiliary air, fuel particles are impacted using pressure-air, realize the abundant atomization of fuel oil, effect is better than first two side
Formula.But opportunity, overall structure and the air degree of participation of air addition could not be optimized, original EFI is still in structure
Mode then cannot achieve the reliable atomization of heavy oil and fuel combination can not be organized efficiently to burn, also allows for heavy oil application
It is unable to reach the effect of expectation in the dynamic property, economy and emission performance of engine, to make the application of heavy oil can not be a wide range of
It is universal.
Therefore, it is necessary to improve to existing heavy fuel burning engine, heavy oil is enabled to realize more adequately mixing, and
The burning of fuel-efficient can be organized, guarantees that heavy oil in dynamic property, economy and the emission performance for being applied to engine, realizes heavy oil
Applied to the energy-saving and environmental protection and low cost after engine.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of cylinder head of heavy fuel burning engine and heavy fuel burning engine, combustion
It burns room to be configured to so that heavy oil realizes more adequately mixing, and can organize the burning of fuel-efficient, guarantee heavy oil is being answered
For the dynamic property, economy and emission performance of engine, realize the energy-saving and environmental protection after heavy oil is applied to engine and it is low at
This.
The cylinder head of the heavy fuel burning engine of the utility model is machined with precombustion chamber, the precombustion chamber tool on the cylinder head
There is the jet port for being connected to combustion chamber, and plug ignition electrode is located in precombustion chamber, certainly, the ignition point of spark plug is located at
In precombustion chamber；Using precombustion chamber structure, further mixes, is atomized and homogenizes using the indoor combustion-gas flow of precombustion
Fuel combination, cooperation guarantee to be formed after later period direct-injection enters combustion chamber with auxiliary low pressure air atomizing and in-cylinder direct-jet structure
It is more more fully atomized, to realize the full combustion and utilization of heavy oil；It not only ensure that the further atomization of fuel droplet,
Also ensure between auxiliary air and droplet it is uniform mix, finally being capable of homogenous combustion.
Further, the precombustion chamber is Laval nozzle structure, and the Laval nozzle structure is formed directly into cylinder head
And jet port is connected to combustion chamber；The precombustion chamber course of work is, after fuel is injected into combustion chamber, while entering precombustion chamber,
By spark plug (ignition point is located at the inlet end of Laval nozzle, the inlet end be for Laval nozzle, rather than with
The mouth of combustion chamber) igniting after, expand simultaneously by Laval nozzle rapidly pass through throat by Laval nozzle jet port spray
(speed more higher than combustion explosion) out is further sufficiently mixed and burns conducive to other gaseous mixtures in combustion chamber, thus
More conducively and it is more suitable for the burning of heavy oil.
Further, the precombustion chamber is the Laval nozzle structure along plug ignition direction, in structure further
Burning and course of injection are adapted to, the inconsistent of burning direction and injection direction is avoided and interferes or reduce jeting effect.
Further, the dual ignition plug formed by spark plug I and spark plug II is installed on the cylinder head, is mentioned using dual ignition plug
For igniting, the characteristic with high-energy ignition guarantees engine various in conjunction with air-assisted atomization above-mentioned and premix scheme
Operating condition igniting reliable and secure under the conditions of further decreases engine volume relative to traditional heavy oil compression ignition engine
And weight, it is suitable for unmanned plane use；And the spark plug I be located at top of combustion chamber middle position or near；Due to spark
Fill in I it is centrally located or near, ensure that spark plug II also is located at middle line, being sufficiently mixed and fill conducive to heavy oil after igniting
The burning divided.
Further, the precombustion chamber is set at spark plug 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, gaseous mixture of the burning gases that precombustion chamber sprays more conducively to entire combustion chamber
Form disturbance and full combustion.
Further, the igniting angle of the spark plug II is 40 ° -50 °；The structure makes the combustion mixture entered and fire
The igniting orientation of Hua Sai is corresponding, is formed about dense combustion gas mixing area in spark plug, further mixes conducive to combustion air, from
And organize the burning of fuel-efficient.
Further, the center line of the spark plug I and spark plug II is substantially coplanar, and where the coplanar and inlet and outlet door
Plane it is spatially substantially vertical, co-planar arrangement refers to that the central axis of spark plug II and spark plug I is located on the same face,
Plane where inlet and outlet door refers to that 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 it is fair
Perhaps there is certain error, such as lesser inclination and dislocation, have no effect on understanding coplanar to this programme and vertical；The knot
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, conducive to forming tumble flow
Further atomization, ensure that the burning of uniform high-efficiency.
The invention also discloses a kind of aero-engine, the aero-engine is equipped with the heavy fuel burning engine
Cylinder head.
The utility model has the beneficial effects that the cylinder head and aero-engine of the heavy fuel burning engine of the utility model, in spark
Precombustion chamber is set, and precombustion chamber has the jet port for being connected to combustion chamber, precombustion is indoor to have fired quilt at the igniting of plug
It is sprayed after lighting by jet port, further impacting to have to the fuel combination for entering combustion chamber makes the well-mixed effect of gas,
Conducive to the uniform combustion mixture of formation, meanwhile, precombustion chamber can accelerate flame transmission, improve efficiency of combustion, and promotion is started
Machine power simultaneously reduces risk for knock, additionally it is possible to organize the burning of fuel-efficient, guarantee heavy oil the dynamic property for being applied to engine,
Economy and emission performance 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 cross-sectional view (being installed on engine) of the utility model.
Specific embodiment
As shown in the figure: the cylinder head of the heavy fuel burning engine of the present embodiment is machined with precombustion chamber 17 on the cylinder head 2, described
Precombustion chamber 17 has the jet port for being connected to combustion chamber, and plug ignition electrode is located in precombustion chamber；Using precombustion
Cell structure further homogenizes fuel combination using the indoor combustion-gas flow of precombustion, cooperation with auxiliary low pressure air atomizing with
And in-cylinder direct-jet structure, guarantee later period direct-injection enter behind combustion chamber formed more more fully be atomized under the premise of realize heavy oil
Full combustion and utilization；Not only ensure that between auxiliary air and droplet under conditions of impact force it is uniform mix, final energy
It is enough uniformly adequately to burn.
As shown, being also equipped with fuel oil ejection assemblies on combustion chamber, successively mixed by fuel nozzle 6, premixer 7 and oil gas
It closes nozzle 8 and is tightly connected formation, be tightly connected to form fixation by mounting base between fuel nozzle 6 and oil-air mixing nozzle 8, and
Premixer is formed directly into mounting base, simple and compact for structure.
In the present embodiment, the precombustion chamber 17 is Laval nozzle structure, and the Laval nozzle structure is directly formed
In cylinder head and jet port connection combustion chamber；The precombustion chamber course of work is, after fuel is injected into combustion chamber, while entering pre-burning
Burn room, by spark plug (ignition point is located at the inlet end of Laval nozzle, the inlet end be for Laval nozzle, and
It is not the mouth with combustion chamber) after igniting, expands and throat is rapidly simultaneously passed through by the spray of Laval nozzle by Laval nozzle
Loophole sprays (speed more higher than combustion explosion), and further impacting to have to the fuel combination for entering combustion chamber keeps gas abundant
Mixed effect, conducive to uniform combustion mixture is formed, meanwhile, precombustion chamber can accelerate flame transmission, improve burning effect
Rate 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 start
Dynamic property, economy and the emission performance of machine realize energy-saving and environmental protection and low cost that heavy oil is applied to after engine.
In the present embodiment, the precombustion chamber 17 is the Laval nozzle structure along plug ignition direction, in structure
Burning and course of injection are further adapted to, the inconsistent of burning direction and injection direction is avoided and interferes or reduce injection effect
Fruit.
The dual ignition plug formed by spark plug I 3 and spark plug II 4 is installed, the mounting structure of spark plug is to protrude on cylinder head 2
Combustion chamber (precombustion chamber) is lighted a fire, and details are not described herein for mounting structure, provides igniting using dual ignition plug, has high energy point
Fire characteristic, in conjunction with air-assisted atomization above-mentioned and premix scheme, guarantee engine various operating conditions and under the conditions of reliably
The igniting of safety further decreases engine volume and weight, is suitable for nobody relative to traditional heavy oil compression ignition engine
Machine uses.
In the present embodiment, the igniting angle of the spark plug II 4 is 40 ° -50 °；The structure makes using in-cylinder direct-jet
The gaseous mixture that mode enters is corresponding with the igniting orientation of spark plug after top land and cylinder body wall surface water conservancy diversion, in spark plug
It is formed about dense combustion gas mixing area, and is conducive to further mix with combustion air, to form efficient tissue burning；It uses
When, the utility model is suitable for in-cylinder direct-jet structure, is arranged on cylinder head and is successively sprayed by fuel nozzle 6, premixer 7 and air-fuel mixture
Mouth 8 is tightly connected the fuel oil ejection assemblies formed, and has the jet angle of setting.
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, (the present embodiment further includes oil-air mixing nozzle for the center line and spark plug II 4 of the spark plug I 3
The also coplanar setting of 8 center line) center line it is substantially coplanar, and the coplanar plane where with inlet and outlet door spatially base
This is vertical, and co-planar arrangement refers to that the central axis of oil-air mixing nozzle 8, spark plug II 4 and spark plug I 3 is located on the same face,
Plane where inlet and exhaust valve refers to that the axis of inlet and exhaust valve is generally aligned in the same plane, substantially coplanar and substantially vertical refer to permission
With certain error, such as lesser inclination and dislocation, the understanding coplanar to this programme is had no effect on；The structure ensure that cylinder
The simple-arranged of all parts on head, while being conducive to being sufficiently mixed for air inlet and combustion gas, it is further atomized conducive to tumble flow is formed,
It ensure that the burning of uniform high-efficiency.
In the present embodiment, precombustion chamber is set at spark plug I 3 and the ignitor of the spark plug I 3 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.
The invention also discloses a kind of aero-engines, as shown, engine includes cylinder head 2, cylinder body 1 and piston
Component 5, the aero-engine is equipped with the cylinder head of the heavy fuel burning engine, and the engine is suitable for unmanned plane.
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 (8)
1. a kind of cylinder head of heavy fuel burning engine, it is characterised in that: be machined with precombustion chamber, the precombustion chamber tool on the cylinder head
There is the jet port for being connected to combustion chamber, and plug ignition electrode is located in precombustion chamber.
2. the cylinder head of heavy fuel burning engine according to claim 1, it is characterised in that: the precombustion chamber is Laval nozzle
Structure, the Laval nozzle structure are formed directly into cylinder head and jet port connection combustion chamber.
3. the cylinder head of heavy fuel burning engine according to claim 2, it is characterised in that: the precombustion chamber is along spark plug
The Laval nozzle structure in igniting direction.
4. the cylinder head of heavy fuel burning engine according to claim 2, it is characterised in that: installation is by spark plug I on the cylinder head
With spark plug II formed dual ignition plug, and the spark plug I be located at top of combustion chamber middle position or near.
5. the cylinder head of heavy fuel burning engine according to claim 4, it is characterised in that: the precombustion chamber is set to spark plug
At I and I ignitor of the spark plug protrudes into precombustion chamber.
6. the cylinder head of heavy fuel burning engine according to claim 5, it is characterised in that: the igniting angle of the spark plug II is
40°-50°。
7. the cylinder head of heavy fuel burning engine according to claim 6, it is characterised in that: the spark plug I and spark plug II
Center line is substantially coplanar, and the plane where the coplanar door with inlet and outlet is spatially substantially vertical.
8. a kind of aero-engine, it is characterised in that: the aero-engine is equipped with claim 1 to 7 any claim
Heavy fuel burning engine cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819707.9U CN208294663U (en) | 2018-05-29 | 2018-05-29 | The cylinder head and aero-engine of heavy fuel burning engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820819707.9U CN208294663U (en) | 2018-05-29 | 2018-05-29 | The cylinder head and aero-engine of heavy fuel burning engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208294663U true CN208294663U (en) | 2018-12-28 |
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ID=64722269
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820819707.9U Expired - Fee Related CN208294663U (en) | 2018-05-29 | 2018-05-29 | The cylinder head and aero-engine of heavy fuel burning engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208294663U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590871A (en) * | 2018-05-29 | 2018-09-28 | 重庆隆鑫发动机有限公司 | The cylinder head and aero-engine of heavy fuel burning engine |
| CN116163865A (en) * | 2023-03-28 | 2023-05-26 | 北京中航智科技有限公司 | Ignition type heavy oil engine combustion device and ignition type heavy oil engine |
-
2018
- 2018-05-29 CN CN201820819707.9U patent/CN208294663U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590871A (en) * | 2018-05-29 | 2018-09-28 | 重庆隆鑫发动机有限公司 | The cylinder head and aero-engine of heavy fuel burning engine |
| CN116163865A (en) * | 2023-03-28 | 2023-05-26 | 北京中航智科技有限公司 | Ignition type heavy oil engine combustion device and ignition type heavy oil engine |
| CN116163865B (en) * | 2023-03-28 | 2024-04-30 | 北京中航智科技有限公司 | Ignition type heavy oil engine combustion device and ignition type heavy oil 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 |
Granted publication date: 20181228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |