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WO2016173171A1 - Segment racleur - Google Patents

Segment racleur Download PDF

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Publication number
WO2016173171A1
WO2016173171A1 PCT/CN2015/088881 CN2015088881W WO2016173171A1 WO 2016173171 A1 WO2016173171 A1 WO 2016173171A1 CN 2015088881 W CN2015088881 W CN 2015088881W WO 2016173171 A1 WO2016173171 A1 WO 2016173171A1
Authority
WO
WIPO (PCT)
Prior art keywords
boss
ring
step surface
ring body
rings
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.)
Ceased
Application number
PCT/CN2015/088881
Other languages
English (en)
Chinese (zh)
Inventor
吴映雪
刘千喜
钱正进
周月亭
阳光怀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asimco Shuanghuan Piston Ring Yizheng Co Ltd
Original Assignee
Asimco Shuanghuan Piston Ring Yizheng Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asimco Shuanghuan Piston Ring Yizheng Co Ltd filed Critical Asimco Shuanghuan Piston Ring Yizheng Co Ltd
Publication of WO2016173171A1 publication Critical patent/WO2016173171A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings

Definitions

  • the invention relates to the technical field of piston ring structures, in particular to a scraping ring for reducing sliding friction and reducing lubricating oil consumption.
  • the oil scraping ring is disposed on the inner side of the cylinder liner, and mainly bears the function of scraping oil.
  • the scraping effect mainly depends on the following two aspects: 1) the ring body of the oil scraping ring conforms to the cylinder bore deformation of the cylinder liner The ability to weld the oil ring to the cylinder liner; 2) the contact pressure between the outer surface of the oil scraper ring and the inner wall of the cylinder liner. Therefore, improving the fit performance and increasing the contact pressure can improve the scraping ability of the scraper ring.
  • the scraper ring of the prior art includes a radially outer working face 1, two end faces 5 and an inner circumferential face 2; the radially outer working faces 1 are spaced apart in the direction of the central axis of the ring body 4.
  • the direction forms a stepped surface, and the outer diameters of the step faces of the two boss rings are reduced or increased in the same direction, that is, the lower points of the step faces of the two boss rings are located on the same side of the boss ring.
  • both on the upper side of the boss ring or on the lower side of the boss ring, and the step surface is a contact surface that directly contacts the inner wall of the cylinder liner.
  • the scraper ring of this structure has the following defects in processing design:
  • the machining direction needs to be selected in advance, and generally, a small hole is used as a direction indication mark on one of the end faces, and then processed, which complicates the machining process and involves Direction, the phenomenon that the machining direction is opposite to the expected direction is easy to occur, causing useless operation and wasting material; at the same time, the step surface provided in the same direction needs to be aligned after use, which may cause the use process. Troubled.
  • the object of the present invention is to provide a scraping oil ring, which can not only reduce the friction loss, but also ensure the scraping effect, and does not need to define the direction in the process of processing and use, and is convenient in production and use, and low in cost.
  • An oil scraping ring comprising a ring body, wherein the ring body comprises two annular end faces disposed opposite each other, and an annular radially outer working surface and an inner circumferential surface connecting the two end faces, the diameter Providing at least one set of boss ring structures to the outer working surface at a direction of a central axis of the ring body, each set of the boss ring structures comprising two boss rings spaced apart from each other, each of the bosses
  • the top surface of the ring is formed with a stepped surface along the central axis direction of the ring body, and the outer diameters of the step faces of the two of the boss ring structures in the same group of the boss ring structures are reduced in a direction close to each other .
  • an inner circumference of the inner circumferential surface is provided with an annular elastic member.
  • the radially outer working surface is provided with a set of the boss ring structures.
  • the two boss rings are arranged symmetrically up and down.
  • the boss ring includes a first oblique side surface, a second oblique side surface, and the step surface, the step surface connecting the first oblique side surface and the second inclined side surface, the first oblique direction The side surface is connected to the end surface.
  • the step surface includes a first boss step surface contacting the inner side of the cylinder liner, a second boss step surface having an outer diameter smaller than the first boss step surface, and connecting the first boss a step transition surface of the step surface and the second boss step surface, wherein the first boss step surface is connected to the first oblique side surface, the second boss step surface and the second oblique side surface connection.
  • the angle between the plane of the second boss step surface and the plane of the first boss step surface is 0° to 10°, wherein the plane of the first boss step surface is The plane of the end face is vertical.
  • the axial width of the first boss step surface is 0.05-0.15 mm, and the total axial width of the first boss step surface, the step transition surface and the second boss step surface
  • the radial minimum distance of the step transition surface is 0.02 to 0.06 mm, which is 0.15 to 0.45 mm.
  • the outer surfaces of the first boss step surface, the step transition surface and the second boss step surface are provided with a wear-resistant coating, and the wear-resistant coating has a thickness of 0.03 to 0.10 mm. .
  • the second oblique side faces of the two boss rings are connected by a bottom surface of the radially outer working surface between the two boss rings, and the bottom surface of the groove is opened in the circumferential direction.
  • a plurality of oil return holes extending radially through the ring body.
  • a radial distance of the first boss step surface to the bottom surface of the groove along a radial direction of the ring body is greater than a radial distance of the second boss step surface to the groove bottom surface, wherein The radial distance between the step surface of the first boss and the bottom surface of the groove is 0.25 to 0.50 mm.
  • the inner circumferential surface of the ring includes two curved structures symmetrically disposed above and below, each of the curved structures including an inner wall, a circular arc surface and an oblique side surface which are sequentially connected from the outside to the inner, the inner wall and the inner wall
  • the end surface is connected, the two curved surfaces are connected by a circular arc connecting surface between the inclined side faces, one end surface of the oil return hole is located at the bottom surface of the groove, and the other end surface of the oil return hole is located at the end
  • the arc connecting surface, the elastic element is disposed close to the circular arc surface.
  • the inner wall is a plane perpendicular to the end surface, and the two curved surfaces and the arc connecting surface together form a structure of a nipple shape.
  • the oil scraping ring of the present invention comprises a ring body, wherein the ring body comprises two annular end faces disposed opposite each other, and an annular radially outer working face and an inner circumferential face connecting the two end faces,
  • the radially outer working surface is spaced apart from each other in the direction of the central axis of the ring body with at least one set of boss ring structures, each set of the boss ring structures including two boss rings spaced apart from each other, each of the protrusions
  • the top surface of the ring ring is formed with a step surface along the central axis direction of the ring body, and the outer diameters of the step faces of the two of the boss ring rings in the same group of the boss ring structures are reduced in the direction close to each other.
  • FIG. 1 is a schematic structural view of a prior art scraper ring.
  • FIG. 2 is a schematic top plan view of a scraper ring of the present invention.
  • FIG. 3 is a cross-sectional structural view of the scraper ring of FIG. 2 taken along the A-A direction.
  • a scraping ring includes a ring body 4, and the ring body 4 includes two annular end faces 5 disposed opposite each other, and an annular radially outer working face connecting the two end faces 5. 1 and an inner circumferential surface 2, the radially outer working surface 1 is spaced apart from the central axis of the ring body 4 with at least one set of boss ring structures, each set of boss ring structures comprising two boss rings arranged at upper and lower intervals
  • the top surface of each of the boss rings forms a stepped surface along the central axis direction of the ring body 4, and the outer diameters of the step faces of the two boss rings in the same set of boss ring structures are reduced in the direction toward the other side. .
  • the scraper ring is reduced in the direction of approaching the other side of the step faces of the two boss rings, so that the high points of the two step faces are on the outer side of the two boss rings, and the low points are in two
  • the inner side of the boss ring therefore, the two boss rings are symmetrically arranged, and the step faces are also symmetrically arranged, so that the scraper ring does not need to be identified and determined during processing or installation, thereby greatly reducing the processing.
  • the difficulty of installation reduce the cost, at the same time, because there is no directional requirement, it will not go wrong when using it; and by setting the boss ring and setting the stepped structure on the top of the boss ring, the scraper ring and the cylinder can be effectively reduced.
  • the contact area of the sleeve reduces the friction loss and ensures the oil scraping effect.
  • the outer diameter of the step surface refers to the vertical distance of the step surface from the point in the central axis direction of the ring body 4 to the central axis of the ring body 4.
  • an inner circumference of the inner circumferential surface 2 is provided with an annular elastic member 16.
  • the elastic force is applied to the ring body 4 by the elastic member 16 so that the radially outer working surface 1 of the ring body 4 can be effectively in contact with the inner wall of the cylinder liner.
  • the annular inner circumferential surface 2 comprises two curved structures symmetrically arranged vertically, each curved structure including an inner wall 3, an arc surface 12 and an oblique side surface 13, which are connected from the outside to the inside, and the inner wall 3 and the end surface 5 Connected, the two curved structures are connected by a circular connecting surface 14 between the inclined sides 13
  • the elastic element 16 is placed against the arcuate surface 12.
  • the inner wall 3 is a plane perpendicular to the end surface 5, and the two curved structures together with the circular arc connecting surface 14 form a nipple-shaped structure.
  • Rg is the arc radius of the circular arc surface
  • Ri is the arc radius of the arc connecting surface
  • F1 is the contact surface of the elastic member 16 and the circular arc surface 12.
  • the outer peripheral surface of the elastic member 16 is in the axial direction.
  • the radially outer working surface 1 is provided with a set of boss ring structures, and the two boss rings in the set of boss ring structures are symmetrically arranged up and down. That is, the two boss rings are symmetrically arranged in the plane of the midpoint of the height of the ring body 4, and it can be considered that the low points of the two step faces are disposed inward. After this setting, it can be processed on the 5-bit basis of any end face during processing, and it is not necessary to specially set the reference features before or during the processing, which makes the processing more convenient.
  • the ring body 4 can be balanced in the cylinder sleeve when sliding up and down, and the stability is high, that is, the two step surfaces for scraping oil are ensured to be in contact with the inner wall of the cylinder liner at the same time.
  • the boss ring includes a first inclined side surface 6, a second inclined side surface 10, and a step surface, and the step surface connects the first inclined side surface 6 and the second inclined side surface 10, and the first inclined side surface 6 is connected to the end surface 5.
  • the step surface includes a first boss step surface 7 that is in contact with the inner side of the cylinder liner, a second boss step surface 9 whose outer diameter is smaller than the first boss step surface 7, and the first connection a step transition surface 8 of the boss step surface 7 and the second boss step surface 9, wherein the first boss step surface 7 is connected to the first oblique side surface 6, and the second boss step surface 9 is connected to the second oblique side surface 10 .
  • the low point of the step surface that is, the first boss step surface 7 is located outside the boss ring
  • the high point of the step surface is the second convex step
  • the step 9 is located inside the boss ring.
  • the second inclined side surface 10 of the two boss rings is connected by the groove bottom surface 11 of the radially outer working surface 1 between the two boss rings, and the groove bottom surface 11 is provided with a plurality of radial through holes in the circumferential direction.
  • the oil return hole 15 of the ring body 4, one end surface of the oil return hole 15 is located at the bottom surface 11 of the groove, and the other end surface of the oil return hole 15 is located at the arc connecting surface 14.
  • the oil return hole 15 may be a circular through hole or a waist through hole to facilitate smooth discharge of the scraped oil.
  • the axial width of the first boss step surface 7 is 0.05 to 0.15 mm, and preferably, the axial width a of the first boss step surface may be 0.05 mm, 0.08 mm, 0.1 mm, 0.12 mm. Or 0.15mm, due to engine friction work loss 60 ⁇ 70% from the scraper ring, and this size design ensures high surface pressure while maintaining low elastic force, the engine oil consumption can be reduced by more than 50%, and the friction work loss is reduced. About 15%, while ensuring the feasibility of the processing technology.
  • the total axial width b of the first boss step surface 7, the step transition surface 8 and the second boss step surface 9 is 0.15 to 0.45 mm, preferably, the first boss step surface 7 and the step
  • the total axial width b of the transition surface 8 and the second boss step surface 9 is 0.15 mm, 0.25 mm, 0.30 mm, 0.35 mm, 0.40 mm, 0.45 mm, and the first boss step surface 7 and the step are at this size.
  • the structure of the transition surface 8 and the second boss step surface 9 cooperates to increase the service life of the scraper ring by a factor of two.
  • the radial minimum distance c of the step transition surface 8 is 0.02 to 0.06 mm, and preferably, the radial minimum distance c of the step transition surface 8 is 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm. Therefore, the step transition surface 8 is a sloped surface and has a tapered structure, which ensures the slow decay of the surface pressure of the ring body 4 in the service life range and prolongs the service life of the oil scraping ring.
  • the angle between the plane of the second boss step surface 9 and the plane of the first boss step surface 7 is 0° to 10°, wherein the plane and the end surface 5 of the first boss step surface 7 are located.
  • the plane is vertical, and the gradient formed by the second boss step surface 9 and the first boss step surface 7 ensures the scraping The oil under it flows smoothly.
  • the outer surfaces of the first boss step surface 7, the step transition surface 8 and the second boss step surface 9 are provided with a wear-resistant coating layer 17, and the thickness of the wear-resistant coating layer 17 is 0.03 to 0.10 mm.
  • the thickness f of the wear-resistant coating layer 17 is 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm.
  • the radial distance of the first boss step surface 7 to the groove bottom surface 11 along the radial direction of the ring body 4 is greater than the radial distance of the second boss step surface 9 to the groove bottom surface 11, wherein the first boss step surface 7
  • the radial distance to the bottom surface 11 of the groove is 0.25 to 0.50 mm, which ensures the smooth return of the oil return path and improves the rigidity of the ring body.
  • the scraper ring of the present invention is different from the conventional scraper ring in that the axial height a of the first boss step surface 7 of the scraper ring is reduced, that is, reduced, by the above-described configuration and size. h, even if the scraping oil ring elasticity is reduced to reduce the frictional work loss, the scraping ring contact pressure can be increased to achieve the goal of reducing the oil consumption. More specifically, the scraper ring of the present invention does not require direction recognition during processing and use, and the wiper ring of the present invention has significantly improved performance compared with the conventional scraper ring, and the friction work loss is reduced by about 15 %, the maximum oil consumption can be reduced by more than 50%.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne un segment racleur d'huile, qui comprend: un corps annulaire (4) présentant deux faces d'extrémité annulaires (5) disposées de manière opposée en haut et en bas; et une face de travail externe radiale (1) et une face circonférentielle interne (2) qui relient deux faces d'extrémité et ont une forme annulaire. La face de travail externe radiale (1) est munie d'au moins un ensemble de structures annulaires convexes par intervalles dans la direction axiale centrale du corps annulaire (4). Chaque ensemble de structures annulaires convexes comprend deux anneaux convexes disposés de haut en bas par intervalles. La face supérieure de chaque anneau convexe forme une face en gradin dans la direction axiale centrale du corps annulaire (4), et le diamètre extérieur de la face en gradin de deux anneaux convexes dans le même ensemble de structures annulaires convexes diminue dans la direction proche de son homologue. Le segment racleur d'huile de l'invention est réalisé de sorte que non seulement les pertes dues au frottement peuvent être réduites dans le processus d'utilisation pour assurer un effet de raclage d'huile, mais il est en plus superflu d'exécuter une identification d'orientation dans le processus d'usinage et d'utilisation, ce qui rend pratique sa fabrication et son utilisation.
PCT/CN2015/088881 2015-04-27 2015-09-02 Segment racleur Ceased WO2016173171A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510200819.7 2015-04-27
CN201510200819 2015-04-27

Publications (1)

Publication Number Publication Date
WO2016173171A1 true WO2016173171A1 (fr) 2016-11-03

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ID=55097655

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/088881 Ceased WO2016173171A1 (fr) 2015-04-27 2015-09-02 Segment racleur

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CN (1) CN105257826A (fr)
WO (1) WO2016173171A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020216477A1 (fr) * 2019-04-24 2020-10-29 Federal-Mogul Dresden, Zn Der Fmvv Gmbh Segment racleur d'huile en deux pièces à géométrie avantageuse

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020119789A1 (de) * 2020-07-28 2022-02-03 Federal-Mogul Burscheid Gmbh Ölabstreifring für kolben eines verbrennungsmotors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020190476A1 (en) * 2000-01-20 2002-12-19 Karlfried Preyer Oil-scrapper piston ring and a method for producing an oil-scraper piston ring
CN1708656A (zh) * 2002-10-29 2005-12-14 丰田自动车株式会社 油环
CN102575767A (zh) * 2009-09-30 2012-07-11 日本活塞环株式会社 多部件式油环
CN102939482A (zh) * 2010-06-04 2013-02-20 日本活塞环株式会社 内燃机用油环
CN103649604A (zh) * 2011-07-21 2014-03-19 辉门布尔沙伊德有限公司 刮油环
CN104061087A (zh) * 2014-06-24 2014-09-24 仪征亚新科双环活塞环有限公司 油环及其加工工艺

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Publication number Priority date Publication date Assignee Title
CN201448162U (zh) * 2009-07-20 2010-05-05 南京飞燕活塞环股份有限公司 一种新型风冷柴油机活塞环组
BRPI1003187B1 (pt) * 2010-06-04 2021-03-16 Mahle Metal Leve S/A anel de controle de óleo de corpo ferroso para motores de combustão interna
DE102010048079B4 (de) * 2010-10-09 2013-03-28 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines Kolbenrings
CN102518529A (zh) * 2011-12-28 2012-06-27 仪征双环活塞环有限公司 油环外圆轮廓形状及其加工方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020190476A1 (en) * 2000-01-20 2002-12-19 Karlfried Preyer Oil-scrapper piston ring and a method for producing an oil-scraper piston ring
CN1708656A (zh) * 2002-10-29 2005-12-14 丰田自动车株式会社 油环
CN102575767A (zh) * 2009-09-30 2012-07-11 日本活塞环株式会社 多部件式油环
CN102939482A (zh) * 2010-06-04 2013-02-20 日本活塞环株式会社 内燃机用油环
CN103649604A (zh) * 2011-07-21 2014-03-19 辉门布尔沙伊德有限公司 刮油环
CN104061087A (zh) * 2014-06-24 2014-09-24 仪征亚新科双环活塞环有限公司 油环及其加工工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020216477A1 (fr) * 2019-04-24 2020-10-29 Federal-Mogul Dresden, Zn Der Fmvv Gmbh Segment racleur d'huile en deux pièces à géométrie avantageuse

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