CN202250454U - Electrical ejection engine piston - Google Patents
Electrical ejection engine piston Download PDFInfo
- Publication number
- CN202250454U CN202250454U CN2011203182037U CN201120318203U CN202250454U CN 202250454 U CN202250454 U CN 202250454U CN 2011203182037 U CN2011203182037 U CN 2011203182037U CN 201120318203 U CN201120318203 U CN 201120318203U CN 202250454 U CN202250454 U CN 202250454U
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- CN
- China
- Prior art keywords
- piston body
- piston
- bbg
- ring groove
- firing chamber
- 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.)
- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to parts of an automobile engine, in particular relates to an electrical ejection engine piston, and mainly solves the technical problems in the prior art that: when a piston works, fuel and air cannot be fully mixed, and combustion is not full, so bearing heat load is high, stress at an opening of a combustion chamber is disperse and the using effect is bad, and the like. The piston comprises a piston body (1), and is characterized in that: the piston body (1) has an overall cylindrical shape; a combustion chamber (2) is arranged inside the top of the piston body and comprises an arc-shaped bottom ring groove (3); a convex spherical bottom (4) is arranged in the middle of the arc-shaped bottom ring groove; a ring groove (5) is formed on the external surface of the top of the piston body; and a pin hole (6) is formed in the lower part of the piston body.
Description
Technical field
The utility model relates to a kind of component of motor car engine, especially relates to a kind of BBG piston.
Background technique
Along with motor, especially along with DENG develops to high compression ratio, high-output power, low emission, long lifetime direction; The use of technology such as charge inter cooling, Electrocontrolled high-pressure injection more and more widely; Piston as the motor heart component; Heat load and mechanical load that it bore are increasing, piston failure phenomenons such as piston head cracking, piston snap ring, piston pin boss cracking occur through regular meeting, cause motor to run well.Chinese patent discloses a kind of piston (notice of authorization number: CN20l827353U) of motor car engine; Be provided with the cavity that can seal in its body; Liquid medium is housed in the cavity, and the body outside also is provided with the filler port that communicates with the body interior cavity, and the filler port place is provided with the plug that is tightly connected with body; The volume of liquid medium is slightly less than the volume of cavity, and liquid medium is antifreeze liquid or water.Chinese patent also discloses a kind of motor car engine piston (notice of authorization number: CN 201100184Y); It comprises piston body; It is oval barrel-shaped that piston body is, and fiery bank adopts unitary tapered design, and by first compression ring, second compression ring, oil ring three ring bank designs; On the key seat of piston body stiffening rib is arranged, the firepower bank adopts low firepower design.But these two kinds of pistons fuel oil and air at work can not fully mix, and it is more insufficient to burn, and the heat load of therefore bearing is bigger, and firing chamber oral area stress comparatively disperses, and using effect is relatively poor.
The model utility content
The utility model provides a kind of BBG piston; It mainly is to solve the existing in prior technology piston fuel oil and air can not fully mix at work; It is more insufficient to burn; The heat load of therefore bearing is bigger, and firing chamber oral area stress comparatively disperses, the technical problem of the relatively poor grade of using effect.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of BBG piston of the utility model; Comprise piston body, described piston body integral body is cylindrical, and the inside of piston body napex is provided with the firing chamber; The firing chamber includes circular arc base ring groove; Be provided with protruding Spherical Bottom in the middle of the circular arc base ring groove, the outer surface at piston body top is provided with annular groove, and the bottom of piston body is provided with pin-and-hole.Be provided with protruding Spherical Bottom in the middle of the firing chamber, fuel oil and air are fully mixed, sufficient combustion reduces heat load, reduces firing chamber oral area stress and concentrates.Piston body can be formed from aluminium, and the black phosphating processing can be carried out in its surface, can increase the corrosion resistance of piston body like this.The annular groove on piston body top can be installed compression ring, oil ring.
As preferably, described piston body inside is provided with the cooling oil duct of annular, and cooling oil duct is connected with jet.Head at piston body has increased cooling oil duct; Can be at the inner filling of cooling oil duct cooling machine oil, cooling machine oil can not be full of whole cooling oil duct, makes cooling machine oil in cooling oil duct, to shake and flows; Thereby form turbulent flow; The effect of cooling is better, has increased the heat radiation of piston body head, has reduced the heat load of piston body head.
As preferably, the outer surface at described piston body top is provided with the edge ring, and the edge ring is processed one with piston body.The one ring bank castingin at piston body top has the edge ring, can effectively improve the tensile strength of a ring bank, reduces the thermal distortion of piston body head.
As preferably, the outer surface of described piston body bottom is the skirt section, is provided with one deck printing graphite layer outside the skirt section.The skirt section spraying printing graphite layer of piston body helps the break-in of lubricating engine initial stage, makes normal working of engine, in order to avoid engine scuffing.
As preferably, the interior angle of described pin-and-hole is a fillet.When assembling, push bearing pin like this, bearing pin can or not cause pin-and-hole to pull phenomenon very along get into pin-and-hole slidingly.
Therefore, the firing chamber of the utility model is made up of circular arc base ring groove and protruding Spherical Bottom, and fuel oil and air can fully be mixed, and sufficient combustion reduces heat load, reduces the concentrated stress of firing chamber oral area, and using effect is better, and is simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is side structure schematic representation of Fig. 1.
Component, position and numbering among the figure: piston body 1, firing chamber 2, circular arc base ring groove 3, Spherical Bottom 4, annular groove 5, pin-and-hole 6, cooling oil duct 7, edge ring 8, skirt section 9, fillet 10.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment: a kind of BBG piston of this example like Fig. 1, Fig. 2, has a piston body 1; Piston body integral body is cylindrical; The inside of piston body napex is provided with firing chamber 2, and the firing chamber includes circular arc base ring groove 3 and edge ring 8, and wherein the edge ring is processed one with piston body.Be provided with protruding Spherical Bottom 4 in the middle of the circular arc base ring groove.The outer surface at piston body top is provided with annular groove 5, and piston body inside is provided with the cooling oil duct 7 of annular, and cooling oil duct is connected with jet.The bottom of piston body is provided with pin-and-hole 6, and the interior angle of pin-and-hole is a fillet 10.The outer surface of piston body bottom is skirt section 9, is provided with one deck printing graphite layer outside the skirt section.
During use, utilize pin-and-hole 6 on the piston body 1 that whole piston is packed into and get final product in the charged injection internal combustion engine.
The above is merely the specific embodiment of the utility model; But the structure characteristic of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (5)
1. BBG piston; Comprise piston body (1), it is characterized in that described piston body (1) is whole for cylindrical, the inside of piston body napex is provided with firing chamber (2); The firing chamber includes circular arc base ring groove (3); Be provided with protruding Spherical Bottom (4) in the middle of the circular arc base ring groove, the outer surface at piston body top is provided with annular groove (5), and the bottom of piston body is provided with pin-and-hole (6).
2. a kind of BBG piston according to claim 1 is characterized in that described piston body (1) inside is provided with the cooling oil duct (7) of annular, and cooling oil duct is connected with jet.
3. a kind of BBG piston according to claim 1 and 2 is characterized in that the outer surface at described piston body (1) top is provided with edge ring (8), and the edge ring is processed one with piston body.
4. a kind of BBG piston according to claim 1 and 2 is characterized in that the outer surface of described piston body (1) bottom is skirt section (9), is provided with one deck printing graphite layer outside the skirt section.
5. a kind of BBG piston according to claim 1 and 2, the interior angle that it is characterized in that described pin-and-hole (6) are fillet (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203182037U CN202250454U (en) | 2011-08-29 | 2011-08-29 | Electrical ejection engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203182037U CN202250454U (en) | 2011-08-29 | 2011-08-29 | Electrical ejection engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250454U true CN202250454U (en) | 2012-05-30 |
Family
ID=46111709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203182037U Expired - Fee Related CN202250454U (en) | 2011-08-29 | 2011-08-29 | Electrical ejection engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386891A (en) * | 2015-11-30 | 2016-03-09 | 柳州市恒达动力机械制造有限公司 | Suspension type inner-cooling gas engine piston |
| CN107989712A (en) * | 2017-12-27 | 2018-05-04 | 广西玉柴机器股份有限公司 | Diesel engine piston structure |
-
2011
- 2011-08-29 CN CN2011203182037U patent/CN202250454U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386891A (en) * | 2015-11-30 | 2016-03-09 | 柳州市恒达动力机械制造有限公司 | Suspension type inner-cooling gas engine piston |
| CN107989712A (en) * | 2017-12-27 | 2018-05-04 | 广西玉柴机器股份有限公司 | Diesel engine piston structure |
| CN107989712B (en) * | 2017-12-27 | 2019-12-06 | 广西玉柴机器股份有限公司 | Piston structure of diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20120530 Termination date: 20170829 |