CN202250447U - Piston of internal combustion engine with electronic spray function - Google Patents
Piston of internal combustion engine with electronic spray function Download PDFInfo
- Publication number
- CN202250447U CN202250447U CN2011203182041U CN201120318204U CN202250447U CN 202250447 U CN202250447 U CN 202250447U CN 2011203182041 U CN2011203182041 U CN 2011203182041U CN 201120318204 U CN201120318204 U CN 201120318204U CN 202250447 U CN202250447 U CN 202250447U
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- piston
- piston body
- pin
- combustion engine
- internal combustion
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Abstract
The utility model relates to components of automobiles, particularly to a piston of an internal combustion engine with the electronic spray function, which mainly solves the technical problems that in the piston of the prior art, as no pin hole sleeve is arranged inside the pin hole, a pin shaft is directly contacted with the inner surface of the pin hole after being inserted into the pin hole of the piston, abrasion is unavoidable during the use, and the operation requirements of the internal combustion engine with the electronic spray function can not be met, and the like. The piston provided by the utility model includes a piston body (1), and is characterized in that the entire piston body (1) is cylindrical; a combustion chamber (2) is arranged at the top inside the piston body; a ring groove (3) is arranged on the outer surface at the top of the piston body; the pin hole (4) is arranged at the lower part of the piston body; and the pin hole sleeve (5) is arranged inside the pin hole.
Description
Technical field
The utility model relates to a kind of auto parts and components, especially relates to a kind of charged injection internal combustion engine 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 the pin-and-hole inside of these two kinds of pistons is not provided with the pin-and-hole cover, so bearing pin can directly contact with the pin-and-hole internal surface after being inserted in the pin-and-hole of piston, can produce wearing and tearing during use, can't satisfy the job requirement of EFI internal-combustion engine.
The model utility content
The utility model provides a kind of charged injection internal combustion engine piston; It mainly is that the pin-and-hole inside that solves the existing in prior technology piston is not provided with the pin-and-hole cover; Therefore bearing pin can directly contact with the pin-and-hole internal surface after being inserted in the pin-and-hole of piston; Wearing and tearing can be produced during use, the technical problem of the job requirement etc. of EFI internal-combustion engine can't be suitable for.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of charged injection internal combustion engine piston of the utility model comprises piston body, and described piston body integral body is cylindrical; The inside of piston body napex is provided with the firing chamber; The outer surface at piston body top is provided with annular groove, and the bottom of piston body is provided with pin-and-hole, is provided with the pin-and-hole cover in the pin-and-hole.The pin-and-hole cover is fixed on the inside of pin-and-hole, only touches the pin-and-hole cover after making bearing pin insert, and has avoided the bearing pin pin-and-hole that directly weares and teares.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, 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, described firing chamber includes circular arc base ring groove, is provided with at the bottom of the protruding round platform in the middle of the circular arc base ring groove.Fuel oil and air are fully mixed, and sufficient combustion reduces heat load, reduces firing chamber oral area stress and concentrates.
Therefore, the utility model makes bearing pin when inserting through at pin-and-hole set inside pin-and-hole cover, can avoid directly contacting with pin-and-hole is inner, thereby reduce friction, makes its work requirements that can be applicable to charged injection internal combustion engine, 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: at the bottom of piston body 1, firing chamber 2, annular groove 3, pin-and-hole 4, pin-and-hole cover 5, edge ring 6, skirt section 7, circular arc base ring groove 8, the round platform 9.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment: a kind of charged injection internal combustion engine 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 8, is provided with at the bottom of the protruding round platform 9 in the middle of the circular arc base ring groove.The outer surface at piston body top is provided with annular groove 3 and edge ring 6, and wherein the edge ring is processed one with piston body.The bottom of piston body is provided with pin-and-hole 4, is provided with pin-and-hole cover 5 in the pin-and-hole.The outer surface of piston body bottom is skirt section 7, is provided with one deck printing graphite layer outside the skirt section.
During use, utilize pin-and-hole 4 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 (4)
1. charged injection internal combustion engine piston; Comprise piston body (1); It is characterized in that described piston body (1) integral body for cylindrical, the inside of piston body napex is provided with firing chamber (2), and the outer surface at piston body top is provided with annular groove (3); The bottom of piston body is provided with pin-and-hole (4), is provided with pin-and-hole cover (5) in the pin-and-hole.
2. a kind of charged injection internal combustion engine piston according to claim 1 is characterized in that the outer surface at described piston body (1) top is provided with edge ring (6), and the edge ring is processed one with piston body.
3. a kind of charged injection internal combustion engine piston according to claim 1 and 2 is characterized in that the outer surface of described piston body (1) bottom is skirt section (7), is provided with one deck printing graphite layer outside the skirt section.
4. a kind of charged injection internal combustion engine piston according to claim 1 and 2 is characterized in that described firing chamber (2) includes circular arc base ring groove (8), is provided with in the middle of the circular arc base ring groove (9) at the bottom of the protruding round platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203182041U CN202250447U (en) | 2011-08-29 | 2011-08-29 | Piston of internal combustion engine with electronic spray function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203182041U CN202250447U (en) | 2011-08-29 | 2011-08-29 | Piston of internal combustion engine with electronic spray function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250447U true CN202250447U (en) | 2012-05-30 |
Family
ID=46111702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203182041U Expired - Fee Related CN202250447U (en) | 2011-08-29 | 2011-08-29 | Piston of internal combustion engine with electronic spray function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121851A (en) * | 2016-07-14 | 2016-11-16 | 邹敏 | A kind of piston of L-type annular groove |
-
2011
- 2011-08-29 CN CN2011203182041U patent/CN202250447U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106121851A (en) * | 2016-07-14 | 2016-11-16 | 邹敏 | A kind of piston of L-type annular groove |
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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 |
Granted publication date: 20120530 Termination date: 20170829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |