CN2338497Y - Leakage-free piston ring and matched piston thereof - Google Patents
Leakage-free piston ring and matched piston thereof Download PDFInfo
- Publication number
- CN2338497Y CN2338497Y CN 97210985 CN97210985U CN2338497Y CN 2338497 Y CN2338497 Y CN 2338497Y CN 97210985 CN97210985 CN 97210985 CN 97210985 U CN97210985 U CN 97210985U CN 2338497 Y CN2338497 Y CN 2338497Y
- Authority
- CN
- China
- Prior art keywords
- ring
- piston
- lower ring
- overlap joint
- leakage
- 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 claims description 6
- 238000007142 ring opening reaction Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000005465 channeling Effects 0.000 abstract 1
- 239000003433 contraceptive agent Substances 0.000 abstract 1
- 230000002254 contraceptive effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a no leakage piston ring and supporting piston thereof, its characterized in that lower ring is equipped with the side and takes the interface, and the lower ring is hugged closely and seals lower ring side and takes the interface to fit with a contraceptive ring in the piston ring groove. The utility model discloses can prevent effectively that the blow-by of piston ring opening part, oil channeling from influencing engine power phenomenon to can not take place to leak because of the wearing and tearing overlap joint clearance increase of ring, prolonged 2-5 times life.
Description
The utility model relates to piston and piston ring combination, relates in particular to a kind of nothing and leaks piston ring and supporting piston thereof.
The main piston assembly that is combined by piston, piston ring is widely used in fields such as Reciprocating engine, air compressor, refrigerator, oxygenerator, pneumatic machinery, steam power machinery.The garden plunger piston ring that uses on the piston has opening, and guarantees that according to different type of machines pressed on ring back piston ring opening part has the gap of leaving 0.15-0.35mm, in case the swollen cylinder of expanded by heating.Even existing piston adopts the ring of the opening that staggers more than the twice to form mazy type and seals depressed structure, still the defective that exists working medium to leak at opening inevitably.Take automobile engine as example, at expansion stroke, because opening part leaks the gases at high pressure after burning, cause engine power to descend; In compression stroke, opening part leaks fuel gas, and engine compression ratio is reduced, and affects engine power, and fuel gas is altered into crankcase simultaneously, has watered down lubricating oil.Gap-clearance of piston rings place also causes to scurry on the lubricant oil to firing chamber participation burning exhaust pollutant is increased.In use, along with the outer surface friction wear of inboard wall of cylinder liner and ring, encircle under the effect of self elastic force, keep fitting by the form that increases opened gap with inboard wall of cylinder liner, cause opened gap constantly to enlarge, gas blowby, the situations such as oil, power decline, tail gas pollution of scurrying are more and more serious.
The purpose of this utility model provides a kind of not gas blowby, does not scurry oil, keeps power stability, and the nothing of long service life is leaked piston ring and supporting piston thereof.
The utility model is made up of upper ring and lower ring, piston, alignment pin, and lower ring interface is designed to side overlap joint mouth, leaves one on the other two locating holes in the piston cannelure; Locate respectively at piston cannelure inner upper ring, lower ring, pressed on ring is close to lower ring and the lower ring of sealing side overlap joint mouth.
The utility model advantage is because lower ring opening is designed to side overlap joint mouth, and pressed on ring is close to the lower ring of sealing side overlap joint mouth all the time, so during reciprocating motion of the pistons, can not cause lower ring side to take the interface gas blowby, alter oily phenomenon, keep engine power stable, and on the basis of existing piston ring, can not increase because of the wearing and tearing overlap joint mouthful gap of ring and leak, prolonged 2-5 times of service life.
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the utility model side view.
Fig. 2 is the utility model plan view.
As shown in Figure 1, piston 1 leaves one on the other two locating holes, is used for respectively locating pressed on ring 2, lower ring 3.Be close to lower ring 3 in piston 1 cannelure inner upper ring 2, and the pressed on ring 2 interfaces lower ring 3 sides overlap joint that staggers mouthful installs, with the lower ring of pressed on ring 2 bottom surfaces sealing 3 sides overlap joint mouthful.Mutually stagger 180 ° such as present embodiment pressed on ring 2 interfaces and lower ring 3 sides overlap joint mouth.And for example shown in Figure 2, can find out that from the A section after the outside was respectively grinding 50% in two terminations of lower ring 3, the side of formation was connected the overlap joint mouth, namely side is taken otch.Like this, topped lower in pressed on ring 2 forms leak free sealing ring.Lower ring 3 sides overlap joint mouthful product requires outer taking in the length to take weak point, leaves the expansion clearance of interior alignment pin position and 0.15-0.35mm after being convenient to install.Locating stud 4 inboard location are ring 3 down.Fig. 2 B section is that ring 2 structural representations are gone up in locating stud 4 location.When the utility model was reciprocating, two ring natures compressed up and down, and sealing is ring 3 sides overlap joint mouthful down, had prevented that effectively gap-clearance of piston rings place from leaking.
Claims (1)
1, a kind of no leakage piston ring and supporting piston thereof that is made up of upper ring and lower ring, piston, alignment pin is characterized in that lower ring interface is designed to side overlap joint mouth, leaves one on the other two locating holes in the piston cannelure; Locate respectively at piston cannelure inner upper ring, lower ring, pressed on ring is close to lower ring and the lower ring of sealing side overlap joint mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97210985 CN2338497Y (en) | 1997-02-21 | 1997-02-21 | Leakage-free piston ring and matched piston thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97210985 CN2338497Y (en) | 1997-02-21 | 1997-02-21 | Leakage-free piston ring and matched piston thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2338497Y true CN2338497Y (en) | 1999-09-15 |
Family
ID=33929677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97210985 Expired - Fee Related CN2338497Y (en) | 1997-02-21 | 1997-02-21 | Leakage-free piston ring and matched piston thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2338497Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235264A (en) * | 2010-04-25 | 2011-11-09 | 杨应捷 | End-clearance-free piston ring provided with positioning groove |
| CN103452691A (en) * | 2012-05-30 | 2013-12-18 | 重庆长安汽车股份有限公司 | Anti-blow-by piston ring set for automobile supercharged engine |
| CN104314700A (en) * | 2014-10-13 | 2015-01-28 | 重庆长安汽车股份有限公司 | Engine piston ring |
-
1997
- 1997-02-21 CN CN 97210985 patent/CN2338497Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235264A (en) * | 2010-04-25 | 2011-11-09 | 杨应捷 | End-clearance-free piston ring provided with positioning groove |
| CN102235264B (en) * | 2010-04-25 | 2016-02-03 | 杨应捷 | There is the end-clearance-free piston ring of locating slot |
| CN103452691A (en) * | 2012-05-30 | 2013-12-18 | 重庆长安汽车股份有限公司 | Anti-blow-by piston ring set for automobile supercharged engine |
| CN104314700A (en) * | 2014-10-13 | 2015-01-28 | 重庆长安汽车股份有限公司 | Engine piston ring |
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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 |