CN204436612U - Internal combustion engine end face is optimized structure - Google Patents
Internal combustion engine end face is optimized structure Download PDFInfo
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- CN204436612U CN204436612U CN201420805067.8U CN201420805067U CN204436612U CN 204436612 U CN204436612 U CN 204436612U CN 201420805067 U CN201420805067 U CN 201420805067U CN 204436612 U CN204436612 U CN 204436612U
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Abstract
The utility model discloses a kind of internal combustion engine end face and optimizes structure, comprise piston only, be provided with the firing chamber of this piston only recessed at this piston only top, at described piston only end face, edge is provided with a circle guide face, this guide face is obliquely installed, and outer low and inner high.Adopt above structure, along face, flow conductivity gradient design is carried out to piston only top, not only process for machining and manufacturing is simple, under same compression ratio, also Flow field intensity can be improved about 8%, make internal combustion (IC) engine cylinder flame velocity of propagation or oil, gas mixing velocity increases obviously, period of combustion shortens, degree of constant volume increases, thus improves engine efficiency.
Description
Technical field
The utility model belongs to technical field of internal combustion engines, is specifically related to a kind of internal combustion engine end face and optimizes structure.
Background technique
At present, general internal combustion engine top all adopts flat-top to design along face, and flat-top is more weak for the guidance quality of engine cylinder flow field along face design, and under same compression ratio, the crowded intensity of flow when top dead center is not good.
Model utility content
For solving above technical problem, the utility model provides one can strengthen internal combustion (IC) engine cylinder flow field intensity, make that burning is better, mixing evenly internal combustion engine end face optimize structure.
Its technological scheme is as follows:
A kind of internal combustion engine end face is optimized structure, comprise piston only (1), the firing chamber (2) of recessed this piston only (1) is provided with at this piston only (1) top, its main points are: at described piston only (1) end face, edge is provided with a circle guide face (3), this guide face (3) is obliquely installed, and outer low and inner high.Adopt above structure, along face, flow conductivity gradient design is carried out to piston only top, not only process for machining and manufacturing is simple, under same compression ratio, also Flow field intensity can be improved about 8%, make internal combustion (IC) engine cylinder flame velocity of propagation or oil, gas mixing velocity increases obviously, period of combustion shortens, degree of constant volume increases, thus improves engine efficiency.
As preferably: the angle between described guide face (3) and horizontal plane is 3 ~ 5 °, after piston only top plane changes inclined-plane into, especially after adopting the inclined-plane of 3 ~ 5 °, when piston stroking upward, gas increases to piston centre squeezing flow intensity, during descent of piston, gas inhales intensity of flow to piston skirt increases, thus the gas flow strengthened in whole cylinder, contribute to combustion flame propagation and accelerate oil, gas mixing.
As preferably: described guide face (3) inner side extends to the inwall of described firing chamber (2), this guide face (3) outside extends to the outer side wall of described piston only (1), and effect like this is better.
Beneficial effect: along face, flow conductivity gradient design is carried out to piston only top, not only process for machining and manufacturing is simple, under same compression ratio, also Flow field intensity can be improved about 8%, make internal combustion (IC) engine cylinder flame velocity of propagation or oil, gas mixing velocity increases obviously, period of combustion shortens, and degree of constant volume increases, thus improves engine efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the S-S sectional view in Fig. 1;
The flow field intensity cloud atlas of Fig. 3 to be piston only 1 end face be plane;
The flow field intensity cloud atlas on Fig. 4 to be piston only 1 end face be 3 ° of inclined-planes.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
A kind of internal combustion engine end face is as depicted in figs. 1 and 2 optimized structure, comprise piston only 1, the firing chamber 2 of this piston only 1 recessed is provided with at this piston only 1 top, at described piston only 1 end face, edge is provided with a circle guide face 3, this guide face 3 is obliquely installed, and outer low and inner high, extend to the inwall of described firing chamber 2 inside described guide face 3, outside this guide face 3, extend to the outer side wall of described piston only 1.
Refer to Fig. 2: the angle between described guide face 3 and horizontal plane is 3 ~ 5 °.
Refer to Fig. 3 and Fig. 4: use three-dimensional flow field combustion simulation software converge combustion motor Flow field to carry out simulation contrast, the flow field intensity contrast of crank angle budc 10 degree (compression stroke will terminate first 10 degree) firing chamber central plane: obtain flow field intensity corresponding to synchronization by Fig. 4 and add that gradient designs rear average rate and can improve 1m/s. thus improve combustion flame propagation speed, and increase flame front fold, thus raise the efficiency about 1%.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but meet the most wide range consistent with principle disclosed herein and features of novelty.
Claims (3)
1. an internal combustion engine end face is optimized structure, comprise piston only (1), the firing chamber (2) of recessed this piston only (1) is provided with at this piston only (1) top, it is characterized in that: at described piston only (1) end face, edge is provided with a circle guide face (3), this guide face (3) is obliquely installed, and outer low and inner high.
2. internal combustion engine end face according to claim 1 is optimized structure, and it is characterized in that: the angle between described guide face (3) and horizontal plane is 3 ~ 5 °.
3. internal combustion engine end face according to claim 1 and 2 is optimized structure, it is characterized in that: described guide face (3) inner side extends to the inwall of described firing chamber (2), this guide face (3) outside extends to the outer side wall of described piston only (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805067.8U CN204436612U (en) | 2014-12-18 | 2014-12-18 | Internal combustion engine end face is optimized structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805067.8U CN204436612U (en) | 2014-12-18 | 2014-12-18 | Internal combustion engine end face is optimized structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436612U true CN204436612U (en) | 2015-07-01 |
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| CN201420805067.8U Active CN204436612U (en) | 2014-12-18 | 2014-12-18 | Internal combustion engine end face is optimized structure |
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| CN (1) | CN204436612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339150A (en) * | 2017-07-31 | 2017-11-10 | 天津大学 | A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine |
-
2014
- 2014-12-18 CN CN201420805067.8U patent/CN204436612U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339150A (en) * | 2017-07-31 | 2017-11-10 | 天津大学 | A kind of engine chamber for using Fuel Petroleum instead on the basis of diesel engine |
| CN107339150B (en) * | 2017-07-31 | 2022-12-09 | 天津大学 | Engine combustion chamber for changing gasoline fuel on basis of diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 400039 block B, Jiulong Park, Jiulongpo District, Chongqing Patentee after: Chongqing Pushi New Energy Technology Co.,Ltd. Address before: 400039 block B, Jiulong Park, Jiulongpo District, Chongqing Patentee before: CHONGQING PUSH MECHANISM Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |