CN203702363U - Piston ring assembly used for reciprocating piston type ignition engine - Google Patents
Piston ring assembly used for reciprocating piston type ignition engine Download PDFInfo
- Publication number
- CN203702363U CN203702363U CN201320855667.0U CN201320855667U CN203702363U CN 203702363 U CN203702363 U CN 203702363U CN 201320855667 U CN201320855667 U CN 201320855667U CN 203702363 U CN203702363 U CN 203702363U
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- CN
- China
- Prior art keywords
- ring
- engine
- oil
- gas
- piston
- 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 - Lifetime
Links
- 238000007790 scraping Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims description 9
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 5
- 239000010705 motor oil Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 27
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a piston ring assembly used for a reciprocating piston type ignition engine. A first seal gas ring is a rectangular ring; a second seal gas ring is a nose-shaped taper-face ring; an oil ring comprises two scraper rings without side play and a bushing ring; the scraper rings and the bushing ring are steel belt oil rings; aiming at the actual condition that no carbon deposit exists in combustion of a gas engine, the structural shape of the first gas ring is improved, a trapezoid or a wedge is changed into a rectangle, the piston ring plane sealing property is better, and the gas leakage of the engine is reduced; in order to meet the national V emission requirement of the gas engine, the structural shape of the second gas ring is changed, a reverse distortion or a whole cone is changed into a nose shape, the auxiliary oil scraping effect is better, and the engine oil consumption of the engine is reduced; the oil ring adopts a three-steel belt combined oil ring, the acting force between the upper scraper ring and the bushing ring as well as between the lower scraper ring and the bushing ring is skillfully utilized, no gap appears between the oil ring and an annular ring of a piston, the engine oil overflow phenomenon of the engine during idling is effectively prevented, and the gas engine is enabled to stably reach the national V emission requirement.
Description
Technical field
The utility model relates to a kind of piston ring, is specifically related to a kind of piston ring of gas engine.
Background technique
Existing rock gas (CNG) and liquefied petroleum gas (LNG) engine piston ring group adopt traditional bavin (vapour) oil machine piston ring group form conventionally, and air leakage is large, engine oil consumption is high, can not meet the requirement of motor state V discharge.The top compression ring of tradition bavin (vapour) oil machine piston ring group adopts anti-carbon trapezoidal or wedge-shaped structure conventionally, and technology capability is poor, and sealing effect is bad.
Gas engine is used on city bus and short-distance passenger transportation conventionally, idling operation is many, traditional bavin (vapour) oil machine piston ring group oil ring adopts two combined oil rings of inner support spring (spring and ring body combination) conventionally, there is certain sideshake in piston ring and piston groove, upper lubricating oil carry-over while causing rock gas (CNG) engine idle.
Model utility content
Model utility object: the purpose of this utility model is for the deficiencies in the prior art, provides a kind of good seal performance and frizing the effective piston-ring packing for reciprocating piston type ignition engine.
Technological scheme: the utility model provides a kind of piston-ring packing for reciprocating piston type ignition engine, comprise first seal gas ring, second seal gas ring with together with oil ring, described first seal gas ring is rectangular ring, described second seal gas ring is nose shape taper-face ring, described oil ring comprises that described scraping ring and grommet are steel band oil ring without two scraping rings of sideshake and a slice grommet; Top compression ring is rectangular ring, can make piston ring have better plane sealing performance, reduces the air leakage of motor, and meanwhile, oil ring is made up of two scraping rings and a slice grommet, and support piston assembly without sideshake, is not gone up lubricating oil carry-over when operation while guaranteeing engine idle.
Further, seal gas ring is made up of spheroidal graphite cast iron described in first, the coated FTC layer in surface; Adopt spheroidal graphite cast iron cylindrical surface of contact FTC to process, improved the wear resistance of piston ring and the working life of motor.
Further, the sideshake of seal gas ring is 0.05～0.15mm described in first, has reduced the leakage path between annular groove and ring when piston turns to, and guarantees the envelope gas effect of ring.
Preferably, seal gas ring is made up of high-intensity alloy cast iron described in second, adopts nose shape structure, and wear resistance and controller oil consumption are combined effectively.
Beneficial effect: 1, the actual conditions without carbon deposit for gas engine burning, the structure shape of improvement top compression ring, is improved to rectangle by trapezoidal or wedge shape, makes it have better piston ring plane sealing performance, reduces the air leakage of motor; 2, for meeting gas engine state V emission request, change the structure shape of second gas ring, be improved to nose shape by anti-twist or whole cone, make it have the effect of higher auxiliary frizing, reduce the consumption of lubricating oil of motor; 3, oil ring adopts three pieces type steel belt assembled oil ring, active force between upper and lower two scraping rings of ingenious utilization and grommet, make its when motion with piston ring groove without sideshake, the lubricating oil carry-over phenomenon while effectively having prevented engine idle, has guaranteed that gas engine is stablized and has reached state's V emission request.
Accompanying drawing explanation
Fig. 1 is the sectional view of first seal gas ring;
Fig. 2 is the sectional view of second seal gas ring;
Fig. 3 is the sectional view of oil ring.
Embodiment
Below technical solutions of the utility model are elaborated, but protection domain of the present utility model is not limited to described embodiment.
embodiment:for a piston-ring packing for reciprocating piston type ignition engine, comprise first seal gas ring, second seal gas ring with together with oil ring:
As shown in Figure 1, first seal gas ring is rectangular ring, and sideshake is 0.05～0.15, and because sideshake reduces, thereby the leakage path between annular groove and ring while having reduced that piston turns to guarantees the envelope gas effect of ring; Adopt spheroidal graphite cast iron cylindrical surface of contact FTC to process, improved the wear resistance of ring;
As shown in Figure 2, second seal gas ring adopts nose shape taper-face ring structure, is made up, with its higher Young's modulus (E>=120000N/mm of high strength alloy cast iron F14 material
2) improve piston ring wear resistance good, adopt nose shape cone structure, effectively controller oil consumption;
As shown in Figure 3, oil ring adopts the steel belt assembled oil ring structure of three steel nitride material, formed by two scraping rings and a slice grommet, support piston assembly, the inner circle of scraping ring contacts with the dovetail groove of grommet, has guaranteed that oil ring is in the time of operation, the upper and lower side of upper and lower scraping ring and piston groove close contact, in running, without sideshake, while guaranteeing engine idle, do not go up lubricating oil carry-over.
The piston-ring packing of the present embodiment can be brought up to 10000 hours by original 2000 hours disposable working life, gas engine engine oil consumption is reduced to 0.05% with gas consumption than by original 0.5%, gas engine air leakage is reduced to 80L/min by original 120L/min, the stable state's V emission request that reaches of gas engine.
As mentioned above, although represented and explained the utility model with reference to specific preferred embodiment, it shall not be construed as the restriction to the utility model self.Not departing under the spirit and scope prerequisite of the present utility model of claims definition, can make in the form and details various variations to it.
Claims (4)
1. the piston-ring packing for reciprocating piston type ignition engine, it is characterized in that: comprise first seal gas ring, second seal gas ring with together with oil ring, described first seal gas ring is rectangular ring, described second seal gas ring is nose shape taper-face ring, described oil ring comprises that described scraping ring and grommet are steel band oil ring without two scraping rings of sideshake and a slice grommet.
2. the piston-ring packing for reciprocating piston type ignition engine according to claim 1, is characterized in that: described in first, seal gas ring is made up of spheroidal graphite cast iron, the coated FTC layer in surface.
3. the piston-ring packing for reciprocating piston type ignition engine according to claim 1, is characterized in that: described in first, the sideshake of seal gas ring is 0.05～0.15mm.
4. the piston-ring packing for reciprocating piston type ignition engine according to claim 1, is characterized in that: described in second, seal gas ring is made up of alloy cast iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855667.0U CN203702363U (en) | 2013-12-23 | 2013-12-23 | Piston ring assembly used for reciprocating piston type ignition engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320855667.0U CN203702363U (en) | 2013-12-23 | 2013-12-23 | Piston ring assembly used for reciprocating piston type ignition engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702363U true CN203702363U (en) | 2014-07-09 |
Family
ID=51052816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320855667.0U Expired - Lifetime CN203702363U (en) | 2013-12-23 | 2013-12-23 | Piston ring assembly used for reciprocating piston type ignition engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670778A (en) * | 2013-12-23 | 2014-03-26 | 南京飞燕活塞环股份有限公司 | Piston ring assembly used for reciprocation piston type ignition engine |
-
2013
- 2013-12-23 CN CN201320855667.0U patent/CN203702363U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670778A (en) * | 2013-12-23 | 2014-03-26 | 南京飞燕活塞环股份有限公司 | Piston ring assembly used for reciprocation piston type ignition engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |
|
| CX01 | Expiry of patent term |