CN2371395Y - Piston ring - Google Patents
Piston ring Download PDFInfo
- Publication number
- CN2371395Y CN2371395Y CN 98248185 CN98248185U CN2371395Y CN 2371395 Y CN2371395 Y CN 2371395Y CN 98248185 CN98248185 CN 98248185 CN 98248185 U CN98248185 U CN 98248185U CN 2371395 Y CN2371395 Y CN 2371395Y
- Authority
- CN
- China
- Prior art keywords
- piston ring
- opening
- ring
- piston
- formula opening
- 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
Links
- 238000007789 sealing Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 abstract description 5
- 239000000295 fuel oil Substances 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Landscapes
- Compressor (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model relates to a piston ring, particularly a piston ring for an engine and a pump. The opening shape of the piston ring is composed of a stack type opening positioned on an outer circle face of a ring body and a straight type opening positioned on an inner circle face of the ring body, and an opening gap of the straight type opening is positioned between two opening gaps of the stack type opening. Sealing performance of the piston ring is favorable, air leakage quantity and oil pumping quantity of a cylinder are remarkably reduced, so fuel oil consumption quantity is effectively reduced, lubricating quality of the cylinder is improved, pollution to environment and atmosphere is reduced, and service life of the piston ring is enhanced.
Description
The utility model is particularly motor and a Piston for pump ring of a kind of piston ring, relates to motor and Piston for pump field.
Because piston ring is long-term work under abominable operating conditions, therefore wearing and tearing are big, and wear of piston-rings is directed at the increase of (claiming end gap again) of its opened gap.Existing piston ring opening shape Chang Weizhi formula (Fig. 1), inclined (Fig. 2), folded formula (Fig. 3), the piston ring of these several opening shapes is when work, and its end gap just is communicated with the sideshake and the back clearance of piston ring always, so sealing is not high.Along with the increasing of wear of piston-rings and end gap, make cylinder sealability worse and worse, leak air, scurry the wet goods phenomenon, thereby the compression pressure that directly is directed at motor reduces, the power character variation, the consumption of fuel oil and lubricant oil increases.
The purpose of this utility model provides a kind of piston ring particularly motor and Piston for pump ring, can effectively improve its sealing.
The purpose of this utility model is achieved through the following technical solutions:
A kind of piston ring is motor and Piston for pump ring particularly, comprise the opening 2 on ring body 1, the ring body, it is characterized in that: the opening shape of this piston ring is made up of folded formula opening that is positioned at ring body periphery place and the straight formula opening that is positioned at ring body inner headed face place, and the opened gap 2b of straight formula opening is between two opened gap 2a of folded formula opening.
Work characteristics of the present utility model is:
With the piston ring for engine is example, and when piston ring was worked, its periphery was close to cylinder wall all the time under the effect of ring self elastic force, and contacted cambered surface (the P face of Fig. 4) also is close to mutually between folded formula opening and straight formula opening.When piston forward (V of Fig. 7 to, be the compression cylinder volume) operation, this moment, fuel vapor proceeded to the place, a side that piston ring is adjacent to through sideshake, the back clearance of piston ring, because the obstruct of the A portion of Fig. 7 and can not link up the formation clearance channel mutually, thereby can not enter crankcase with the opened gap of the folded formula opening that is positioned at this side.When piston instead forward and antikinesis, in like manner, the lubricant oil of this moment proceeds to the place, another side that piston ring is adjacent to through sideshake, the back clearance of piston ring, because the obstruct of the B portion of Fig. 6 and can not link up the formation clearance channel mutually with the opened gap of the folded formula opening that is positioned at this another side, thereby can not enter the firing chamber, thereby effectively improve the sealing of piston ring, form effective seal.
The opened gap of straight formula opening can be positioned at the centre of two opened gaps of folded formula opening.
Opened gap length (the T of folded formula opening
1) can be 2/3 of piston ring ring body radial thickness (T).
The utility model compared with prior art has following advantage:
1, the utility model can make motor under the situation that power does not descend, and reduces fuel consumption 7%.
2, because the good sealing of the utility model, reduce the air leakage of cylinder and scurry oil mass, only need in the existing ring of original a group of using, to use this piston ring instead and just can reduce 70% of former air leakage, prevent the mutual fusion of fuel vapor and lubricant oil in addition, can improve lubricating quality and reduce since the flue dust that incomplete combustion produces to the pollution of environment and atmosphere.
3,, have only through the wearing and tearing of a period of time and make the arc length S of this cambered surface along with outer of piston ring because the existence of cambered surface (P) sealing
1When being zero, just begin to occur the possibility of clearance channel, even this moment, also just the initialization state with the existing piston ring of new installation was identical, and make this piston ring can also continue the sealing that keeps enough, therefore under same operating conditions, compared with the existing piston ring, this piston ring can improve 50% of working life.
4, because the good airproof performance of this piston ring, so when being installed in piston ring on the piston, need not be specially the aperture position of each piston ring being staggered or the installing and locating pin prevents the rotation of piston ring in piston groove, thereby simplify assembly process.
The opened gap of straight formula opening is positioned at the centre of two opened gaps of folded formula opening, can make the arc length S of A portion and B portion
1Identical, thus make piston the time forward with antikinesis, and the sealability difference of piston ring is little.
The opened gap length of folded formula opening is 2/3 of piston ring ring body radial thickness, is both to have made A portion and B portion that enough radial thicknesss are arranged, and the opened gap of the straight formula opening of reason is not oversize again, causes the possibility of leakage big.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the piston ring schematic representation of straight formula for opening shape.
Fig. 2 is the piston ring schematic representation of inclined for opening shape.
Fig. 3 is the piston ring schematic representation of opening shape for folded formula.
Fig. 4 is a schematic representation of the present utility model.
Fig. 5 is the periphery of Fig. 4 and the opened gap plan view of straight formula opening.
Fig. 6 is the three-dimensional enlarged diagram of opening left part shown in Figure 4.
Fig. 7 is the three-dimensional enlarged diagram of opening right part shown in Figure 4.
The master that Fig. 8 looks schematic representation or Fig. 7 for the right side of Fig. 6 looks schematic representation.
Fig. 9 is the plan view of Fig. 8.
Below in conjunction with accompanying drawing and by embodiment the utility model is further described:
Piston ring as shown in Figure 4, its diameter D=200 (dimensional units: millimeter, down together), radial thickness T=4.2, height H=2.5.The cylindrical arc length S=5 of folded formula opening bond end, the gap length T of folded formula opening
1=2.8, the height H of folded formula opening separation place
1=1.25.Straight shape opening is in the middle of two opened gaps of folded formula opening.For stuck behind the anti-piston ring expanded by heating, opened gap δ=0.25 of its straight formula, folded formula opening.
Claims (3)
1, particularly motor and Piston for pump ring of a kind of piston ring, comprise the opening on ring body, the ring body, it is characterized in that: the opening shape of this piston ring is made up of folded formula opening that is positioned at ring body periphery place and the straight formula opening that is positioned at ring body inner headed face place, and the opened gap of straight formula opening is between two opened gaps of folded formula opening.
2, piston ring according to claim 1 is characterized in that: the opened gap of this straight formula opening is positioned at the centre of two opened gaps of folded formula opening.
3, piston ring according to claim 1 and 2 is characterized in that: the opened gap length of this folded formula opening is 2/3 of piston ring ring body radial thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98248185 CN2371395Y (en) | 1998-11-18 | 1998-11-18 | Piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98248185 CN2371395Y (en) | 1998-11-18 | 1998-11-18 | Piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2371395Y true CN2371395Y (en) | 2000-03-29 |
Family
ID=33993250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98248185 Expired - Fee Related CN2371395Y (en) | 1998-11-18 | 1998-11-18 | Piston ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2371395Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105283697A (en) * | 2013-06-07 | 2016-01-27 | 株式会社理研 | Piston ring, raw material therefor, and production method for both |
-
1998
- 1998-11-18 CN CN 98248185 patent/CN2371395Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105283697A (en) * | 2013-06-07 | 2016-01-27 | 株式会社理研 | Piston ring, raw material therefor, and production method for both |
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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 |