CN201155376Y - Piston for IC engine - Google Patents
Piston for IC engine Download PDFInfo
- Publication number
- CN201155376Y CN201155376Y CNU2007203093323U CN200720309332U CN201155376Y CN 201155376 Y CN201155376 Y CN 201155376Y CN U2007203093323 U CNU2007203093323 U CN U2007203093323U CN 200720309332 U CN200720309332 U CN 200720309332U CN 201155376 Y CN201155376 Y CN 201155376Y
- Authority
- CN
- China
- Prior art keywords
- piston
- groove
- oil
- skirt section
- engine
- 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 belongs to a gas-engine part, in particular relates to a novel gas-engine piston. The gas-engine piston is an integral cast; the head part of the piston is provided with a plurality of oil grooves; the skirt section of the piston is provided with two piston pin holes that corresponds to each other; the outer side of the two piston pin holes is provided with a snap-ring groove; a heat-insulation groove that is communicated with the internal space of the skirt section of the piston is arranged inside the oil groove that is close to the skirt section of the piston and on the horizontal and vertical position of the piton pin holes; the two sides at the upper part of the snap-ring groove are provided with an oil-discharging groove that is communicated with the oil groove. The gas-engine piston resolves the problem that the skirt section is overheated and inflated to pull the cylinder.
Description
Technical field
The utility model belongs to internal combustion engine component.
Background technique
Though present widely used internal combustion engine has higher structural strength and stiffness, can bear High Temperature High Pressure, and higher wear resistance, corrosion resistance are arranged simultaneously, characteristics such as at high temperature expansion coefficient is little, in light weight.But after long-term the use, piston ring and piston space can produce poorly sealed phenomenon.Because oil return is fast, causes on the lubricant oil and scurry simultaneously, be provided with oilhole though increased the head and the skirt section of the present popular piston of discharging of pollutant.Though oilhole has played oil through and crossed the oil lubrication effect, keep away also that thermal expansion is crossed in unavoidable skirt section and the defective that produces scuffing of cylinder bore.
Summary of the invention
Cause easily and scurry on the lubricant oil and defective such as the easy expanded by heating in piston skirt in order to overcome existing internal combustion engine, and a kind of can effectively the minimizing on the lubricant oil of design scurries, reduces the transmission of piston crown heat to the skirt section, effectively prevented because the scuffing of cylinder bore that thermal expansion causes is crossed in the piston skirt.
The utility model is taked following technological scheme: described internal combustion engine is an one piece casting, piston crown is provided with some oil grooves, lower part of piston is the piston skirt, and be provided with two corresponding piston pin holes, two piston pin hole outsides are provided with annular groove, wherein, open the formation heat dam between the oil groove of close piston skirt and the annular groove, this heat dam also communicates with piston cavity.Both sides, annular groove top are provided with the drain pan that communicates with oil groove.
The oilhole of piston changes heat dam into because the utility model is incited somebody to action in the past, both guaranteed the supply of lubricant oil, stoped of the transmission of piston crown heat again to a great extent, effectively prevented to have saved materials simultaneously because the pull-cylinder phenomena that thermal expansion causes is crossed in the piston skirt to the skirt section; The utility model is connected the oil groove of annular groove with its top, has effectively reduced on the lubricant oil again and has scurried, and has reduced the discharging of pollutant.
Description of drawings
Fig. 1 is the utility model structural representation
Among the figure: 5 piston pin holes, 6 annular grooves, 7 heat dams, 8 drain pans of 1 piston, 2 piston crowns, 3 oil grooves, 4 piston skirts
Embodiment
As shown in Figure 1, present embodiment is taked following mode: internal combustion engine is an one piece casting, it comprises: piston (1), piston crown (2) are provided with oil groove (3), the bottom of piston crown (2) is piston skirt (4), piston skirt (4) is provided with two corresponding piston pin holes (5), the outside of piston pin hole (5) is provided with annular groove (6), it is characterized in that: open between the oil groove (3) of close piston skirt (4) and the annular groove (6) and form heat dam (7), both sides, annular groove (6) top are provided with the drain pan (8) that communicates with oil groove (3).Heat dam (7) also communicates with inner space, piston skirt (4).When piston moved in cylinder body, lubricant oil flowed outside (inner space in skirt section) and the piston in the cock body chamber.
Because this novel heat dam structure of taking makes oily Rapid Cycle, has reduced the temperature of piston skirt, thereby it is overheated to have solved the piston skirt, expands and the problem of scuffing of cylinder bore; The drain pan structure has effectively prevented to scurry on the lubricant oil, has reduced the discharging of pollutant.
Claims (1)
1. internal combustion engine, it comprises: piston (1), piston crown (2) are provided with oil groove (3), the bottom of piston crown (2) is piston skirt (4), piston skirt (4) is provided with two corresponding piston pin holes (5), the outside of piston pin hole (5) is provided with annular groove (6), it is characterized in that: open-minded between the oil groove (3) of close piston skirt (4) and the annular groove (6), form the heat dam (7) that communicates with inner space, piston skirt (4), both sides, annular groove (6) top are provided with the drain pan (8) that communicates with oil groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203093323U CN201155376Y (en) | 2007-12-21 | 2007-12-21 | Piston for IC engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203093323U CN201155376Y (en) | 2007-12-21 | 2007-12-21 | Piston for IC engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155376Y true CN201155376Y (en) | 2008-11-26 |
Family
ID=40103159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203093323U Expired - Fee Related CN201155376Y (en) | 2007-12-21 | 2007-12-21 | Piston for IC engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155376Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017151724A1 (en) * | 2016-03-02 | 2017-09-08 | Federal-Mogul Llc | Galleryless piston with slotted ring groove |
| CN110397515A (en) * | 2019-08-13 | 2019-11-01 | 黄云锋 | A kind of Internal Combustion Engine Piston Mechanism |
| CN110486182A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of internal combustion engine |
-
2007
- 2007-12-21 CN CNU2007203093323U patent/CN201155376Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017151724A1 (en) * | 2016-03-02 | 2017-09-08 | Federal-Mogul Llc | Galleryless piston with slotted ring groove |
| CN110486182A (en) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | A kind of internal combustion engine |
| CN110397515A (en) * | 2019-08-13 | 2019-11-01 | 黄云锋 | A kind of Internal Combustion Engine Piston Mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20121221 |