CN101649792A - Piston ring set used for natural gas engine - Google Patents
Piston ring set used for natural gas engine Download PDFInfo
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- CN101649792A CN101649792A CN200910181217A CN200910181217A CN101649792A CN 101649792 A CN101649792 A CN 101649792A CN 200910181217 A CN200910181217 A CN 200910181217A CN 200910181217 A CN200910181217 A CN 200910181217A CN 101649792 A CN101649792 A CN 101649792A
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Abstract
The invention discloses a piston ring set used for a natural gas engine, which comprises two gas rings and an oil ring, wherein the first gas ring is a double-ladder structure ring, the second gas ring is a detorsion structure ring, and the third oil ring is three pieces of flexible steel-belt combined oil rings; the embedded and molybdenum-spraying ring treatment is carried out on the surface ofthe first double-ladder structure ring, the molybdenum layer has strong scuffwear resistance capacity, and the double-ladder structure has strong deadlocking and carbon-deposition prevention capacities, thereby greatly prolonging the service life; the second gas ring adopts the detorsion structure and has extremely strong oil-scraping capacity as well as remarkably-reduced oil consumption and frictional work; the oil ring is formed by three pieces of flexible steel-belt combined oil rings, and three pieces of flexible steel-belt combined oil rings have the radial thickness of 3.7+/-0.15, strong flexibility, light weight, strong deformation capacity complied with a cylinder sleeve, strong oil-return capacity, improved oil-scraping capacity and effectively-reduced oil consumption.
Description
Technical field
The present invention relates to a kind of piston ring group, is a kind of used for natural gas engine piston ring group specifically.
Background technique
Existing medium and heavy gaseous propellant engine, directly continued to use the piston ring for engine group form of traditional diesel engine or petrol engine as the piston ring group of natural gas engine, promptly first road is that hard chromium plating compression ring, second road are that phosphatization compression ring, the 3rd road are that double-combined helical supporting spring oil ring is formed; But natural gas engine uses this piston ring group to have following shortcoming:
(1) the plating hard chromium on surface compression ring is difficult to adapt to high, the lubrication effect difference ring border of row's temperature of gaseous propellant engine, and failure phenomenons such as scuff wear, scuffing of cylinder bore easily take place;
(2) double-combined helical supporting spring oil ring processing technology is long, and yield rate is low, equipment investment is big;
(3) double-combined helical supporting spring oil ring flexibility is relatively poor, and it is poor that cylinder sleeve is complied with deformability, is difficult to adapt to low engine oil consumption requirement.
Based on above cause analysis, be necessary top compression ring, and oil ring material and structure make adjustment, to adapt to medium and heavy new energy gaseous propellant engine needs.
Summary of the invention
Goal of the invention: the objective of the invention is to overcome the deficiencies in the prior art, a kind of piston ring group that is adapted to the natural gas engine practicality is provided, further put forward the performance of this new energy gaseous propellant engine, thoroughly solve existing gaseous propellant engine faults such as piston assembly premature wear, scuffing of cylinder bore easily take place.
Technological scheme: in order to solve the problems of the technologies described above, the present invention has adopted following technological scheme:
A kind of used for natural gas engine piston ring group, it comprises that the twice compression ring is with oil ring; Described top compression ring is two terraced structural rings, and the second road compression ring is the anti-structural ring of turning round, and the oil ring in the 3rd road is three flexible steel band combined oil rings.
Among the present invention, described top compression ring is inlayed the two terraced structural ring that sprayed molybdenum is handled for the surface process.
Among the present invention, the described second road compression ring is counter the turn round structural ring of surface through nitriding treatment.
Among the present invention, described oil ring is the three slice flexible steel band combined oil rings of surface through oxidation processes; The radial thickness of described three flexible steel band combined oil rings is 3.7 ± 0.15.
Beneficial effect: 1, the processing of sprayed molybdenum ring is inlayed on the two terraced structure compression ring surface in first road, and the anti-scuff wear ability of molybdenum layer is strong, and two terraced structures are anti-jamming, the carbon distribution ability is strong, can improve working life greatly; Brought up to 4000 hour or more by original 2000 hours its disposable working life; Improve the time of using greatly, reduced cost.2, the second road compression ring adopts anti-kink structure, and frizing is very competent, significantly reduces engine oil consumption and frictional work: frictional work reduces by 25%, gas consumption efficient by original 250 grams/kilowatt. the time be reduced to 200 grams/kilowatt. the time; Engine oil consumption and gas consumption are than being reduced to 0.3% by original 0.5%.3, oil ring is made up of three flexible steel band combined oil rings, and the radial thickness of three flexible steel band combined oil rings is 3.7 ± 0.15, and is flexible strong, reduces ring and casing wall specific pressure 25%; In light weight, weight reduction 50%; It is strong to comply with the cylinder-liner distortion ability, increases compliance 40%; The oil return ability is strong, increases drainback passage 80%; Improve the frizing ability, improve frizing ability 40%; Effectively reduce engine oil consumption, reduce gas consumption rate 20%.Can satisfy of the requirement of state 3, state 4, state 5 discharging GB17691-2005 gas spark-ignition engines to the piston ring group.
Description of drawings
Fig. 1-a is the cross section structure schematic representation of top compression ring.
Fig. 1-b is the cross section structure schematic representation of the second road compression ring.
Fig. 1-c is the cross section structure schematic representation of oil ring.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done further explanation.
Shown in Fig. 1-a, benevolence b and 1-c, piston ring group of the present invention is made up of with oil ring the twice compression ring.
Take all factors into consideration gaseous-pressure, temperature, piston assembly linear velocity, lubricant parameter when three road ring groups design, combination has mutually guaranteed sealing high-temperature high-pressure fuel gas and minimum oil film thickness on the function.
The anti-kink of the second road compression ring, 2 employings structure, nitrided surface are handled: the movement process generation is twisted, and makes the tight and casing wall applying of the conical surface down of the ring outside, and seal in combustion gases is also struck off the unnecessary lubricant oil of casing wall.
With the NQ175N natural gas engine is example, and its cylinder diameter is 108mm, the piston ring top compression ring: two ladders are inlayed the sprayed molybdenum ring; The second road compression ring: the anti-flat ring of awl of turning round; Oil ring: three flexible steel band combined oil rings, radial thickness is adjusted into 3.7 ± 0.15 by original 4.17mm.Improve complete machine Endurance life, strengthened anti-scuff wear ability, tension cylinder ability; Significantly reduce engine oil consumption; Improve work efficiency, reduce the cost of raw material; Satisfy the emission request of state 3, state 4, state 5 discharging GB17691-2005 gas spark-ignition engines to the piston ring group.
Claims (5)
1, a kind of used for natural gas engine piston ring group, it is characterized in that: it comprises that the twice compression ring is with oil ring; Described top compression ring (1) is two terraced structural rings, and the second road compression ring (2) is the anti-structural ring of turning round, and the oil ring in the 3rd road (3) is three flexible steel band combined oil rings.
2, used for natural gas engine piston ring group according to claim 1 is characterized in that: described top compression ring (1) is inlayed the two terraced structural ring that sprayed molybdenum is handled for the surface process.
3, used for natural gas engine piston ring group according to claim 1 is characterized in that: the described second road compression ring (2) is counter the turn round structural ring of surface through nitriding treatment.
4, used for natural gas engine piston ring group according to claim 1 is characterized in that: described oil ring (3) is the three slice flexible steel band combined oil rings of surface through oxidation processes.
5, used for natural gas engine piston ring group according to claim 1, it is characterized in that: the radial thickness of described three flexible steel band combined oil rings is 3.7 ± 0.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910181217A CN101649792A (en) | 2009-07-20 | 2009-07-20 | Piston ring set used for natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910181217A CN101649792A (en) | 2009-07-20 | 2009-07-20 | Piston ring set used for natural gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101649792A true CN101649792A (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910181217A Pending CN101649792A (en) | 2009-07-20 | 2009-07-20 | Piston ring set used for natural gas engine |
Country Status (1)
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| CN (1) | CN101649792A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168627A (en) * | 2011-04-20 | 2011-08-31 | 安国清 | Piston ring set with high wear resistance |
| CN102410175A (en) * | 2011-09-07 | 2012-04-11 | 华闽南配集团股份有限公司 | Novel energy-saving piston ring set of air compressor |
| CN103225566A (en) * | 2012-11-29 | 2013-07-31 | 安庆帝伯格茨活塞环有限公司 | Non-oil-stick triple-combination piston oil ring and fabrication method thereof |
| WO2016029599A1 (en) * | 2014-08-25 | 2016-03-03 | 安徽江淮汽车股份有限公司 | Piston for ethanol fuel engine |
| CN110569518A (en) * | 2019-03-29 | 2019-12-13 | 哈尔滨理工大学 | Combined sealing oil film thickness solving method |
| CN113108056A (en) * | 2021-02-22 | 2021-07-13 | 安庆帝伯格茨活塞环有限公司 | Three-combination piston oil ring with constant surface pressure and preparation method thereof |
-
2009
- 2009-07-20 CN CN200910181217A patent/CN101649792A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168627A (en) * | 2011-04-20 | 2011-08-31 | 安国清 | Piston ring set with high wear resistance |
| CN102168627B (en) * | 2011-04-20 | 2016-08-31 | 无锡安尔达机械有限公司 | A kind of high-wearing feature Piston volume tube |
| CN102410175A (en) * | 2011-09-07 | 2012-04-11 | 华闽南配集团股份有限公司 | Novel energy-saving piston ring set of air compressor |
| CN102410175B (en) * | 2011-09-07 | 2015-04-22 | 华闽南配集团股份有限公司 | Novel energy-saving piston ring set of air compressor |
| CN103225566A (en) * | 2012-11-29 | 2013-07-31 | 安庆帝伯格茨活塞环有限公司 | Non-oil-stick triple-combination piston oil ring and fabrication method thereof |
| CN103225566B (en) * | 2012-11-29 | 2015-07-08 | 安庆帝伯格茨活塞环有限公司 | Fabrication method of non-oil-stick triple-combination piston oil ring |
| WO2016029599A1 (en) * | 2014-08-25 | 2016-03-03 | 安徽江淮汽车股份有限公司 | Piston for ethanol fuel engine |
| CN110569518A (en) * | 2019-03-29 | 2019-12-13 | 哈尔滨理工大学 | Combined sealing oil film thickness solving method |
| CN113108056A (en) * | 2021-02-22 | 2021-07-13 | 安庆帝伯格茨活塞环有限公司 | Three-combination piston oil ring with constant surface pressure and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100217 |