CN206694114U - A kind of open combustion chamber of diesel for strengthening combustion mixture generation - Google Patents
A kind of open combustion chamber of diesel for strengthening combustion mixture generation Download PDFInfo
- Publication number
- CN206694114U CN206694114U CN201720475569.2U CN201720475569U CN206694114U CN 206694114 U CN206694114 U CN 206694114U CN 201720475569 U CN201720475569 U CN 201720475569U CN 206694114 U CN206694114 U CN 206694114U
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- CN
- China
- Prior art keywords
- curved surface
- flat bevel
- combustion chamber
- diesel
- strengthening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The purpose of this utility model is to provide a kind of open combustion chamber of diesel for strengthening combustion mixture generation, including cylinder jacket, piston head, combustion chamber is formed between piston head and cylinder jacket, the middle part of cylinder set upper side sets fuel injector, the section of piston head is the symmetrical structure using straight line where fuel injector as axis, the side of symmetrical structure is by top land plane, arc-shaped curved surface, ω type hemisphere pits, flat bevel is sequentially connected the contour line of composition, top land plane and the height of flat bevel are above the minimum point of ω type hemisphere pits, top land plane is connected by arc-shaped curved surface with the outboard end of ω type hemisphere pits, medial extremity of the flat bevel directly with ω type hemisphere pits is connected, symmetrical structure is connected by the flat bevel of its both sides.The utility model can cause atomized fuel and air more fully to mix in prior art, accelerate the formation of combustion mixture, further improve burning quality.
Description
Technical field
The utility model relates to the combustion chamber of a kind of diesel engine, specifically diesel engine.
Background technology
Combustion mixture in diesel engine refers to the gas that fuel vapour and air mix, the fuel oil warp in diesel engine
Injection pump, high-pressure oil pipe and fuel injector are crossed, cylinder is sprayed into very high pressure, sprays into the fuel oil of cylinder by atomization, heating, steaming
Hair, diffusion, combustion mixture is mixed to form with the air of HTHP in cylinder, and burning of being voluntarily under fire.
The combustion mixture of diesel engine is formed to be closely connected with burning, and the formation of gaseous mixture rises to burning quality to be determined
Property influence, therefore, allow fuel oil and air be thoroughly mixed to form combustion mixture, promoting fuel oil fully to burn has become now
Optimize a kind of approach of combustion process.
In order to solve the above problems, diesel engines at present open combustion chamber is typically adopted to strengthen the formation of combustion mixture
The measures such as screen, tangential admission mouth are oriented to band on spiral inlet duct, intake valve.
The content of the invention
The purpose of this utility model, which is to provide, strengthens air whirling motion, fuel oil is sufficiently mixed with air, promotes fuel oil combustion
Burn and improve a kind of open combustion chamber of diesel of reinforcing combustion mixture generation of burning quality.
What the purpose of this utility model was realized in：
A kind of open combustion chamber of diesel for strengthening combustion mixture generation of the utility model, including cylinder jacket, piston head,
Combustion chamber is formed between piston head and cylinder jacket, the middle part of cylinder set upper side sets fuel injector, it is characterized in that：Piston head
Section is the symmetrical structure using straight line where fuel injector as axis, the side of symmetrical structure be by top land plane,
Arc-shaped curved surface, ω type hemisphere pit, flat bevel are sequentially connected the height of the contour line of composition, top land plane and flat bevel
Degree is above the minimum point of ω type hemisphere pits, the outboard end phase that top land plane passes through arc-shaped curved surface and ω type hemisphere pits
Even, medial extremity of the flat bevel directly with ω type hemisphere pits is connected, and symmetrical structure is connected by the flat bevel of its both sides.
The utility model can also include：
1st, described arc-shaped curved surface includes the first small curved surface and the second small curved surface being connected with each other, the first small curved surface and piston
Top planes are tangent, and the second small curved surface is connected with ω type hemisphere pits, and the first small curved surface is the structure to cave inward, the second Chinese yeast
Face is outwardly structure, and distance of the point away from axis of the second small curved surface protrusion is less than coupled ω type hemisphere pits
Distance of the end far from axis.
2nd, annular convex rib is provided with flat bevel, annular convex rib is uniformly distributed.
3rd, straight line where fuel injector is that the both sides flat bevel angulation of axis is 120 °~140 °.
Advantage of the present utility model is：
1st, by improving open port firing cell structure, atomized fuel and air can be caused more fully in prior art
Mixing, accelerates the formation of combustion mixture, further improves burning quality.
2nd, the vorticity of air is only enhanced in air inlet compared to spiral inlet duct, the utility model can be in piston stroking upward mistake
Constantly the vorticity of enhancing air, the time of strengthening flow disturbance are more long in journey so that atomized fuel and air are sufficiently mixed.
3rd, ω types shallow compared in general necking, the arc-shaped curved surface that the utility model top land is connected with ω type hemisphere pits
It with guide functions, can preferably guide air-flow to enter in hemisphere pit, and part Combustion System is carried out in pit,
It is compressed along top land direction to cylinder jacket burning nearby to reduce combustion mixture, avoids damaging cylinder jacket.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the utility model is described in more detail：
With reference to Fig. 1, the utility model includes cylinder jacket 7, piston head 6, arc-shaped curved surface 1, ω type hemisphere pit 2, convex annular
Muscle 3 and flat bevel 4.Fuel injector 5 is arranged on the center of cylinder jacket 7, and arc-shaped curved surface 1 is made up of two sections of small curved surfaces, can
So that by air conducting, into ω type hemisphere pit 2, flat bevel 4 can be by the atomized fuel of injection and air along flat bevel 4
It is guided in ω type hemisphere pit 2.Annular convex rib 3 is arranged on flat bevel 4, and distribution is unsuitable overstocked, and convex tendon 3 can strengthen air-flow
Whirling motion, be sufficiently mixed atomized fuel and air.Symmetrical two flat bevels, 4 α at an angle to each other should be between 120 ° -140 °.
As shown in figure 1, during piston 6 is up, a part of combustion mixture can be along top land lengthwise movement
To near cylinder jacket 7, because arc-shaped curved surface 1 is different from the straight necking of in general, it has guide effect to air-flow so that big portion
It is divided to air-flow, into ω type hemisphere pit 2, to reduce the combustion mixture flowed near cylinder jacket 7 along two sections of Chinese yeast surface currents, avoid
The destruction that combustion mixture burns to cylinder sleeve 7.In addition another part air-flow flows to ω type hemisphere pit 2 along flat bevel 4, by
In the presence of annular convex rib 3, air-flow by annular convex rib 3 similar to miniature peripheral flow, now air-flow be in stage of turbulent flow and
Fluid has viscosity, causes air-flow to be flowed around annular convex rib 3 and produces flowing lift-off, rear flows backwards fluid filling and then produces whirlpool
Rotation, increase the vorticity of air-flow, while the air with vortex is oriented to ω type hemisphere pit 2 by flat bevel 4.In said process
In, piston is constantly up, and air-flow is also being constantly be generated vortex, and vorticity is also constantly increasing.When piston operation is close
During top dead center position, the commencement of fuel injection of fuel oil injector 5 and strengthens the air-flow of vortex be thoroughly mixed to form can the fuel oil of atomization before
Fire gaseous mixture.During firm commencement of fuel injection, the combustion mixture excess air coefficient near fuel injector is smaller, now combustion mixture edge
Flat bevel 4 streams by annular convex rib 3 to be flowed in ω type hemisphere pit 2, is guided to oil spout front arc curved surface in pit
Air mixes so that fuel oil fully burns.The process intensification disturbance of combustion mixture, and with band in ω type hemisphere pit 2
The air for having vortex is sufficiently mixed, and improves the excess air coefficient of combustion mixture, and strengthens the shape of combustion mixture
Into improving burning quality.
Claims (5)
1. a kind of open combustion chamber of diesel for strengthening combustion mixture generation, including cylinder jacket, piston head, piston head and cylinder
Combustion chamber is formed between set, the middle part of cylinder set upper side sets fuel injector, it is characterized in that：The section of piston head is with fuel oil
Straight line where injector is the symmetrical structure of axis, and the side of symmetrical structure is by top land plane, arc-shaped curved surface, ω types
Hemisphere pit, flat bevel are sequentially connected the contour line of composition, and the height of top land plane and flat bevel is above ω types
The minimum point of hemisphere pit, top land plane are connected by arc-shaped curved surface with the outboard end of ω type hemisphere pits, flat bevel
Medial extremity directly with ω type hemisphere pits is connected, and symmetrical structure is connected by the flat bevel of its both sides.
2. a kind of open combustion chamber of diesel for strengthening combustion mixture generation according to claim 1, it is characterized in that：Institute
The arc-shaped curved surface stated includes the first small curved surface and the second small curved surface being connected with each other, the first small curved surface and top land plane phase
Cut, the second small curved surface is connected with ω type hemisphere pits, and the first small curved surface is the structure to cave inward, and the second small curved surface is convex
The structure gone out, distance of the point away from axis of the second small curved surface protrusion are less than the end of coupled ω type hemisphere pits away from
The distance of axis.
3. a kind of open combustion chamber of diesel for strengthening combustion mixture generation according to claim 1 or 2, its feature
It is：Annular convex rib is provided with flat bevel, annular convex rib is uniformly distributed.
4. a kind of open combustion chamber of diesel for strengthening combustion mixture generation according to claim 1 or 2, its feature
It is：Straight line where fuel injector is that the both sides flat bevel angulation of axis is 120 °~140 °.
5. a kind of open combustion chamber of diesel for strengthening combustion mixture generation according to claim 3, it is characterized in that：Combustion
Straight line where oil ejector is that the both sides flat bevel angulation of axis is 120 °~140 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720475569.2U CN206694114U (en) | 2017-05-02 | 2017-05-02 | A kind of open combustion chamber of diesel for strengthening combustion mixture generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720475569.2U CN206694114U (en) | 2017-05-02 | 2017-05-02 | A kind of open combustion chamber of diesel for strengthening combustion mixture generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694114U true CN206694114U (en) | 2017-12-01 |
Family
ID=60448003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720475569.2U Withdrawn - After Issue CN206694114U (en) | 2017-05-02 | 2017-05-02 | A kind of open combustion chamber of diesel for strengthening combustion mixture generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206694114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191261A (en) * | 2017-05-02 | 2017-09-22 | 哈尔滨工程大学 | A kind of open combustion chamber of diesel for strengthening combustion mixture generation |
| CN108194190A (en) * | 2018-01-30 | 2018-06-22 | 清华大学 | A kind of diesel engine combustion chamber for reducing soot emissions |
-
2017
- 2017-05-02 CN CN201720475569.2U patent/CN206694114U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191261A (en) * | 2017-05-02 | 2017-09-22 | 哈尔滨工程大学 | A kind of open combustion chamber of diesel for strengthening combustion mixture generation |
| CN108194190A (en) * | 2018-01-30 | 2018-06-22 | 清华大学 | A kind of diesel engine combustion chamber for reducing soot emissions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171201 Effective date of abandoning: 20201023 |