CN2316472Y - Piston for IC engine - Google Patents
Piston for IC engine Download PDFInfo
- Publication number
- CN2316472Y CN2316472Y CN 97232577 CN97232577U CN2316472Y CN 2316472 Y CN2316472 Y CN 2316472Y CN 97232577 CN97232577 CN 97232577 CN 97232577 U CN97232577 U CN 97232577U CN 2316472 Y CN2316472 Y CN 2316472Y
- Authority
- CN
- China
- Prior art keywords
- piston
- compression
- steel
- ring
- gas
- 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 a piston for an internal combustion engine. The utility model is formed by the improvement based on an original piston. Two pair of gas rings made of steel are arranged in a gas ring groove 3 on a piston body 1, and gas ring openings 6 of the two pair of gas rings are mutually staggered. The width of the gas ring 4 made of steel is half of the width of the gas ring groove 3, and the staggered angle preferably conforms to the range of 150 DEG to 180 DEG. The piston ring can prevent the gas from leaking in a maximum limit, and the utility model has the advantages of good sealing effect and high starting efficiency.
Description
The utility model relates to a kind of piston, especially a kind of piston for IC engine.
Have several roads compression on the existing piston, be equipped with in the per pass compression and be with flexible steel compression ring, be used for cooperating, prevent the cylinder gas leakage in the time of in installing piston into cylinder with compression.And during engine operation, because friction that each moving element produced makes piston and cylinder matching gap excessive, directly causes the steel piston ring gap clearance compression excessive, gas leakage, in-cylinder pressure descends, starting difficulty, power descends, and at this moment needs piston is pulled down, changing one pair of steel compression ring in compression continues to use, but still can't fundamentally eliminate gas leak phenomenon, and the piston seal effect is reduced, influenced the utilization efficiency of internal-combustion engine greatly.
The purpose of this utility model is to provide a kind of good sealing effect, the piston for IC engine that cranking performance rating is high.
The purpose of this utility model solves by the following technical programs: a kind of piston for IC engine, include the piston body of band cavity, piston Xiao and the oil ring groove established on the piston body, compression, oil ring groove, the steel oil ring is housed respectively in the compression, the steel compression ring, be provided with one pair of steel compression ring in each compression of original piston, the parallel three road compressions that are provided with, for reaching better sealing effect, realize the purpose of this utility model, to have piston now and do following the change: the compression width on the piston body is constant, will the steel compression ring that Second Mate's opening staggers mutually be set in the compression.The width of each steel compression ring is half of compression, after piston uses a period of time, because the opening of Second Mate's steel compression ring staggers mutually, makes one pair of gapped generation of compression ring opening even motion produces friction like this.But place's another pair steel compression ring has stoped gas leakage effectively because opening staggers, thereby the sealing effect of whole piston is excellent.
In order to reach best sealing effect, compression is that the angle that interior Second Mate's steel compression ring opening staggers mutually should be 60 °-180 °, is preferably 150 °-180 °.
The compression of piston is three roads, can adopt two roads or three roads that the steel compression ring is installed.
The piston for IC engine of the utility model design, good sealing effect, cranking performance rating height.
Accompanying drawing and drawing are described as follows:
Fig. 1: original piston schematic representation;
Fig. 2: the utility model most preferred embodiment piston schematic representation.
Among the figure: 1 piston body, 2 oil ring grooves, 3 compressions, 4 steel compression rings, 5 steel oil rings, 6 compression ring openings, 7 piston Xiao.
Provide concrete most preferred embodiment of the present utility model below, be used for further specifying the utility model.
Most preferred embodiment is with reference to figure 1,2, this embodiment's piston for IC engine.On original piston basis, improve and form, original piston includes piston Xiao 7, oil ring groove 2, the compression of establishing on the piston body 1, piston body 1 of band cavity 3, steel oil ring 5, steel compression ring 4 are housed respectively in oil ring groove 2, the compression 3, and compression 3 is three roads.The compression 3 of this most preferred embodiment adopts two roads that the steel compression ring is installed, the bottom land degree of depth is constant, width is also constant, establish Second Mate's compression ring opening 6 steel compression ring 4 of 180 ° that staggers mutually in the per pass compression 3, the width of steel compression ring 4 is half of compression, is using through after a while, and compression ring opening 6 places of every pair of steel compression ring 4 produce certain interval through the motion friction, but because the existence of set another pair steel compression ring 4 that uses of staggering of compression ring opening, thereby strengthened the sealing effect of piston.
The piston for IC engine of this most preferred embodiment, the leakage process of gas is: gas is let out at the bottom of the compression by first steel compression ring opening of top compression ring groove, change 180 ° of second steel compression ring openings to the top compression ring groove, change 180 ° of first steel compression ring openings to the second road compression again by the opening discharge, opening drains at the bottom of the second road compression thus.Change 180 ° of second steel compression ring openings to the second road compression again and drain in the body, thereby gas leakage is reduced greatly, sealing effect is excellent.
Claims (3)
1, a kind of piston for IC engine, the piston body (1), piston body (1) that includes the band cavity gone up set piston Xiao (7) and oil ring groove (2), compression (3), steel oil ring (5), steel compression ring (4) are housed respectively in oil ring groove (2), the compression (3), it is characterized in that being provided with in the described compression (3) the steel compression ring (4) that Second Mate's compression ring opening (6) staggers mutually.The width of steel compression ring (4) is half of compression (3).
2, according to the described piston for IC engine of claim 1.The compression ring opening (6) that it is characterized in that Second Mate's steel compression ring (4) set in the described compression (3) angle that staggers mutually is 60 °-180 °.
3,, it is characterized in that described compression ring opening (6) angle that staggers mutually is preferably 150 °-180 ° according to the described piston for IC engine of claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97232577 CN2316472Y (en) | 1997-04-03 | 1997-04-03 | Piston for IC engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97232577 CN2316472Y (en) | 1997-04-03 | 1997-04-03 | Piston for IC engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2316472Y true CN2316472Y (en) | 1999-04-28 |
Family
ID=33944353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97232577 Expired - Fee Related CN2316472Y (en) | 1997-04-03 | 1997-04-03 | Piston for IC engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2316472Y (en) |
-
1997
- 1997-04-03 CN CN 97232577 patent/CN2316472Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |