+

WO2023013265A1 - Bague de lubrification - Google Patents

Bague de lubrification Download PDF

Info

Publication number
WO2023013265A1
WO2023013265A1 PCT/JP2022/024542 JP2022024542W WO2023013265A1 WO 2023013265 A1 WO2023013265 A1 WO 2023013265A1 JP 2022024542 W JP2022024542 W JP 2022024542W WO 2023013265 A1 WO2023013265 A1 WO 2023013265A1
Authority
WO
WIPO (PCT)
Prior art keywords
segment
segments
oil ring
treatment film
pair
Prior art date
Application number
PCT/JP2022/024542
Other languages
English (en)
Japanese (ja)
Inventor
健太朗 河野
涼矢 清水
Original Assignee
Ｔｐｒ株式会社
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 Ｔｐｒ株式会社 filed Critical Ｔｐｒ株式会社
Priority to CN202280054484.0A priority Critical patent/CN117795230B/zh
Publication of WO2023013265A1 publication Critical patent/WO2023013265A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F5/00—Piston rings, e.g. associated with piston crown
    • 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
    • F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials

Definitions

  • the present invention relates to an oil ring provided with a pair of segments.
  • An internal combustion engine installed in a typical automobile adopts a configuration in which a combination of a piston ring (an example of a ring-shaped member) including a compression ring (pressure ring) and an oil ring is mounted in the ring groove of the piston.
  • the compression ring has a gas seal function that suppresses the outflow (blow-by) of combustion gas from the combustion chamber side to the crank chamber side by maintaining airtightness, and scrapes off excess oil that the oil ring could not scrape off. It has an oil seal function that suppresses oil rise.
  • the oil ring has an oil seal function that suppresses the outflow of oil to the combustion chamber side by scraping off excess engine oil (lubricating oil) adhering to the inner wall surface of the cylinder toward the crank. By adjusting the amount of oil so that it is properly retained on the inner wall surface, it has the function of preventing seizure of the compression rings and pistons that accompany the operation of the internal combustion engine.
  • the oil ring includes a pair of segments (also called side rails) arranged independently of each other in the axial direction of the oil ring and sliding on the inner wall surface of the cylinder, and a segment provided between the pair of segments.
  • a three-piece combination oil ring is widely used, which is combined with a spacer expander that urges a pair of segments against the inner wall surface of the cylinder.
  • Patent Document 1 discloses that in a pair of segments, the upper segment provided on the combustion chamber side and the lower segment provided on the crank chamber side have different outer peripheral surface shapes to reduce oil consumption and friction.
  • An oil ring is disclosed that reduces the
  • each pair of segments is the upper segment or the lower segment.
  • the present invention has been made in view of the above-mentioned problems, and its object is to provide a technique that makes it possible to easily identify each of a pair of segments in an oil ring that has a pair of segments.
  • the present invention employs the following configuration. That is, the present invention provides an oil ring to be assembled to a piston in an internal combustion engine, which is annularly formed along the circumferential direction of the oil ring and arranged independently of each other in the axial direction of the oil ring. A pair of segments, and a spacer expander disposed between the pair of segments, wherein at least one axial end face of the pair of segments is arranged such that the surface colors of the pair of segments are different from each other. A surface treatment film is formed on at least a part of at least one of the oil rings.
  • the user (mainly the worker who assembles the piston ring to the piston) can easily distinguish between the upper segment and the lower segment by visually recognizing the surface color of the segment. That is, according to the present invention, it is possible to improve the distinguishability between the upper segment and the lower segment, and reduce the risk of erroneous assembly.
  • the surface treatment film formed on the axial end face which has a larger area than the outer peripheral surface and the inner peripheral surface, is used for identification, it is possible to easily distinguish between the upper segment and the lower segment.
  • any of the hue, lightness, saturation, or color tone, which are color attributes may be made different.
  • the surface treatment film may be formed on at least one of the axial end faces of the upper segment of the pair of segments located on the combustion chamber side in the internal combustion engine. According to this, it is possible to reduce the wear of the upper segment, which slides under more severe conditions than the lower segment.
  • the surface treatment film may be formed on an axial end face facing the combustion chamber side in the internal combustion engine, among the axial end faces of the upper segment. According to this, it is possible to reduce wear of the upper surface of the upper segment and prevent deterioration of the oil seal function.
  • the surface treatment film may have oil retention properties. According to this, since the lubricity of the segment upper surface of the upper segment on which the surface treatment film is formed is improved, the wear resistance of the segment upper surface can be enhanced.
  • the surface treatment coating may include a phosphate coating layer. This makes it possible to impart oil retention to the surface treatment film.
  • the surface treatment film includes a coating film, a resin film, a chemical conversion treatment film, an oxidation treatment film, a nitriding treatment film, a Ni-P plating treatment film, a chromium plating treatment film, a PVD treatment film, and a DLC treatment film. It may be configured to include at least any one layer of. Thereby, the wear resistance of the surface on which the surface treatment film is formed can be improved.
  • the surface treatment film may be formed so that the pair of segments have different brightnesses.
  • the axial end face of one of the pair of segments is and the brightness of the axial end face of the other segment may be 10 or more. By doing so, it is possible to enhance the distinguishability between the upper segment and the lower segment.
  • each of the pair of segments can be easily identified.
  • FIG. 1 is a partial cross-sectional view of an internal combustion engine provided with an oil ring according to an embodiment
  • FIG. FIG. 5 is a partial cross-sectional view of an internal combustion engine provided with an oil ring according to a modified example of the embodiment
  • FIG. 1 is a partial cross-sectional view of an internal combustion engine 100 provided with an oil ring 40 according to an embodiment.
  • FIG. 1 shows a cross section perpendicular to the circumferential direction of the oil ring 40 .
  • a predetermined separation distance is secured between the inner wall surface 101 of the cylinder 10 and the outer peripheral surface 201 of the piston 20 mounted on the cylinder 10, so that the piston clearance PC1 is formed.
  • a ring groove 30 having a substantially rectangular cross section is formed in the outer peripheral surface 201 of the piston 20 .
  • the ring groove 30 connects an upper wall 301 formed on the combustion chamber side, a lower wall 302 formed on the crank chamber side and facing the upper wall 301, and inner peripheral edges of the upper wall 301 and the lower wall 302. wall 303;
  • An oil ring 40 according to this embodiment is mounted in the ring groove 30 .
  • the oil ring 40 is a sliding member that is attached to the piston 20 by being fitted in the ring groove 30 and slides on the inner wall surface 101 of the cylinder 10 as the piston 20 reciprocates.
  • the oil ring 40 is a so-called three-piece combination oil ring, and includes a pair of segments 1 and 2 and a spacer expander 3 as shown in FIG.
  • the direction (axial direction) along the central axis of the oil ring 40 is defined as “vertical direction”.
  • the combustion chamber side (upper side in FIG. 1) of the internal combustion engine 100 is defined as “upper side”
  • the opposite side, that is, the crank chamber side (lower side in FIG. 1) is defined as “upper side”. defined as 'lower side'.
  • the term “peripheral direction” refers to the circumferential direction of the oil ring 40
  • the term “radial direction” refers to the radial direction of the oil ring 40.
  • the “axial direction” refers to the axial direction of the oil ring 40 .
  • the state in which the oil ring is attached to the piston attached to the cylinder of the internal combustion engine as shown in FIG. 1 is referred to as the "used state”.
  • the term “barrel shape” refers to a surface shape that is curved so as to be convex radially outward including the apex, which is the maximum diameter of the piston ring, and the apex is in the axial direction of the ring It includes a "symmetrical barrel shape” located in the center of the width and an “eccentric barrel shape” in which the apex is located closer to the crankcase than the center in the axial width of the ring.
  • the term “tapered shape” refers to a surface shape that is inclined so as to increase in diameter toward the crank chamber.
  • the pair of segments 1 and 2 are annularly formed along the circumferential direction of the oil ring 40, and are provided independently of each other and separated from each other in the axial direction.
  • the upper segment 1, which is one of the pair of segments 1 and 2 is provided on the upper side (combustion chamber side) of the internal combustion engine 100, and the other, the lower segment 2, is provided on the lower side of the internal combustion engine 100. side (crank chamber side).
  • the pair of segments 1 and 2 have different shapes of outer peripheral surfaces.
  • the upper segment 1 includes a base material 1a formed in a ring shape from a segment wire, an outer peripheral coating 1b formed on the outer peripheral surface of the base material 1a, and an upper surface of the base material 1a. It includes a surface treatment film 1c formed thereon and a surface treatment film 1d formed on the lower surface of the substrate 1a.
  • the upper segment 1 has an outer peripheral surface 11 , an inner peripheral surface 12 , an upper surface 13 and a lower surface 14 .
  • An outer peripheral coating 1b is formed on the outer peripheral surface 11, a surface treatment coating 1c is formed on the upper surface 13, and a surface treatment coating 1d is formed on the lower surface .
  • the upper surface 13 and the lower surface 14 are axial end surfaces of the upper segment 1.
  • the upper surface 13 faces the combustion chamber side and the lower surface 14 faces the crank chamber side.
  • the upper surface 13 and the lower surface 14 define the axial width of the upper segment 1 .
  • the upper segment 1 is provided so that the upper surface 13 faces the upper wall 301 of the ring groove 30 in use, and slides on the inner wall surface 101 of the cylinder 10 using the outer peripheral surface 11 as a sliding surface.
  • the outer peripheral surface 11 of the upper segment 1 is formed in an eccentric barrel shape with its apex positioned closer to the crank chamber than the center of the upper segment 1 in the axial direction.
  • the lower segment 2 includes a base material 2a formed in an annular shape from a segment wire and an outer coating 2b formed on the outer peripheral surface of the base material 2a.
  • the lower segment 2 has an outer peripheral surface 21 , an inner peripheral surface 22 , an upper surface 23 and a lower surface 24 .
  • An outer coating 2 b is formed on the outer peripheral surface 21 .
  • the upper surface 23 and the lower surface 24 are axial end surfaces of the lower segment 2. In use, the upper surface 23 faces the combustion chamber side and the lower surface 24 faces the crank chamber side. The upper surface 23 and the lower surface 24 define the width of the lower segment 2 in the axial direction.
  • the lower segment 2 is provided so that the lower surface 24 faces the lower wall 302 of the ring groove 30 when in use, and slides on the inner wall surface 101 of the cylinder 10 using the outer peripheral surface 21 as a sliding surface.
  • the outer peripheral surface 21 of the lower segment 2 is formed in a symmetrical barrel shape with its apex located at the axial center of the lower segment 2 .
  • the spacer expander 3 is provided between a pair of segments 1 and 2 and has self-tension so that it expands in use. Therefore, the upper segment 1 and the lower segment 2 are urged radially outward by the spacer expander 3, and the outer peripheral surface 11 of the upper segment 1 and the outer peripheral surface 21 of the lower segment 2 press the inner wall surface 101 of the cylinder 10. do. As a result, an oil sealing function is obtained, and an oil film is formed so that the engine oil present on the inner wall surface 101 of the cylinder 10 has an appropriate thickness.
  • the shape of the spacer expander according to the present invention is not particularly limited.
  • the outer peripheral surface 11 of the upper segment 1 located on the upper side of the pair of segments 1 and 2 has an eccentric barrel shape with excellent oil scraping performance
  • the lower segment located on the lower side. 2 has a symmetrical barrel shape with low friction.
  • the shape of the pair of segments is not limited to that shown in FIG.
  • both outer peripheral surfaces of a pair of segments may have a symmetrical barrel shape or an eccentric barrel shape.
  • the outer peripheral surface of the upper segment may have a symmetrical barrel shape
  • the outer peripheral surface of the lower segment may have an eccentric barrel shape.
  • outer peripheral surface of the upper segment may have a tapered shape with excellent oil scraping performance, or both outer peripheral surfaces may have a tapered shape.
  • the outer peripheral surface of the upper segment may be formed into a symmetrical barrel shape, and the outer peripheral surface of the lower segment may be formed into a tapered shape.
  • the material of the base material 1a of the upper segment 1 and the material of the base material 2a of the lower segment 2 are not particularly limited, but examples thereof include SUS and SWRH. Also, martensitic stainless steel, silicon chromium steel, aluminum alloy, or the like may be used as the base material. The material of the base material 1a and the material of the base material 2a may be the same or different.
  • the surface treatment coatings 1c and 1d are formed on the upper surface 13 and the lower surface 14 of the upper segment 1 so that the surface colors of the upper surface 13 and the lower surface 14 of the upper segment 1 are the same as those of the upper surface 23 and the lower surface 24 of the lower segment 2.
  • a coating is selected such that it differs from the surface color.
  • the surface treatment coatings 1c and 1d are selected so that their surface color is different from the surface color of the base material 2a of the lower segment 2.
  • the surface treatment coatings 1c and 1d of this example are coating films, resin coatings, chemical conversion coatings, oxidation coatings, nitriding coatings, Ni-P plating coatings, chromium plating coatings, PVD coatings, and DLC coatings.
  • coating film refers to a film formed by applying paint.
  • a “resin coating” refers to a coating formed of a resin material.
  • examples of the “coating film” and “resin coating” include a resin coating film made of water-based or oil-based resin paint.
  • Chemical conversion coating refers to a coating formed by chemical conversion treatment. Examples of chemical conversion treatments include triiron tetraoxide treatment (blackening), phosphate treatment, and chromate treatment. Examples of phosphate treatment include manganese phosphate treatment, zinc phosphate treatment, and iron phosphate treatment.
  • a “nitriding coating” refers to a coating formed by infiltrating nitrogen into a metal surface by nitriding.
  • Oxidation treatment film refers to a film formed by oxidizing a metal surface by oxidation treatment. Examples of oxidation treatment include alumite treatment.
  • Ni—P plating film refers to a film formed by electroless Ni—P plating.
  • chromium-plated film refers to a film formed by chromium plating. Chrome plating is also called industrial chrome plating.
  • PVD (physical vapor deposition) treated coating” refers to a coating formed by the PVD method.
  • a “DLC (Diamond Like Carbon) treated coating” refers to an amorphous hard carbon coating mainly composed of hydrocarbons and allotropes of carbon. By forming such a hard coating, the wear resistance of the upper and lower surfaces of the segment can be enhanced.
  • the outer coating 1b and the outer coating 2b according to this example are formed as DLC coatings with high abrasion resistance.
  • the outer coating is not limited to the DLC treatment coating, and includes at least one layer of a nitriding coating, a Ni-P plating coating, a chromium plating coating, a PVD coating, and a DLC coating. may be formed as
  • the outer coating 1b of the upper segment 1 and the outer coating 2b of the lower segment 2 may have different configurations.
  • the outer coating is not an essential configuration in the present invention, and either or both of the upper segment and the lower segment may not have the outer coating.
  • the oil ring 40 has the surface treatment coatings 1c and 1d only on the upper and lower surfaces of the upper segment 1 out of the upper and lower surfaces of the upper segment 1 and the upper and lower surfaces of the lower segment 2.
  • the surface colors of the upper segment 1 and the lower segment 2 are made different from each other.
  • the surface colors of the upper and lower surfaces of the upper segment 1 and the upper and lower surfaces of the lower segment 2 are made different.
  • a user mainly a worker who assembles the piston ring to the piston
  • the oil ring 40 is formed by forming the surface treatment coatings 1c and 1d on the upper and lower surfaces of the upper segment 1 so that the surface colors of the pair of segments 1 and 2 are different from each other. 1 and the lower segment 2 can be enhanced to reduce the risk of erroneous assembly.
  • the surface treatment coatings formed on the axial end faces (upper and lower surfaces), which have a larger area than the outer and inner peripheral surfaces, are used for identification, it is possible to easily identify the upper and lower segments.
  • any of the hue, lightness, saturation, or color tone, which are color attributes may be made different. Note that color tone refers to a combination of lightness and saturation.
  • the upper surface 13 and the lower surface 14 of the upper segment 1 are formed with surface treatment films, but the present invention is not limited to this.
  • a surface treatment film is formed on at least one of the axial end surfaces (upper and lower surfaces) of at least one of the pair of segments so that the surface colors of the pair of segments are different from each other.
  • a surface treatment film having a surface color different from that of the base material of the lower segment may be formed only on the upper surface or only on the lower surface of the upper segment.
  • a surface treatment film having a surface color different from that of the base material of the upper segment may be formed on at least one of the axial end faces of the lower segment.
  • surface treatment films having different surface colors may be formed on the axial end faces of the pair of segments. These can also enhance the distinguishability between the upper segment and the lower segment.
  • the surface treatment film may be formed on at least a part of the axial end face. That is, the surface treatment film may be formed on a portion of the upper or lower surface of the segment, or may be formed on the entire upper or lower surface of the segment.
  • a coating film for identification may be formed by painting on a part of the upper surface or the lower surface.
  • forming the surface treatment film on the entire surface as in the present embodiment can further improve the identifiability.
  • the surface color of the surface treatment film on the upper surface or the lower surface of the segment is different from the surface color of the outer peripheral surface or the inner peripheral surface of the segment.
  • the surface treatment coating on the upper surface or the lower surface can be conspicuous as an identification coating.
  • the present invention is not limited to this.
  • the axial end face of one of the pair of segments is 10 or more. This makes it easier to identify the upper and lower segments.
  • the present invention is not limited to this.
  • the upper segment arranged on the side of the combustion chamber slides under more severe conditions than the lower segment arranged on the side of the crank chamber.
  • the upper segment tends to wear more than the lower segment.
  • the upper segment 1 is improved in wear resistance by forming the surface treatment coatings 1c and 1d on the upper segment 1 .
  • wear resistance of the upper surface 13 is improved by forming the surface treatment film 1c on the upper surface 13 of the upper segment 1.
  • the gap (side clearance) between the upper groove wall of the ring groove and the upper segment may expand, which may reduce the oil seal function of the oil ring.
  • the oil ring 40 according to the present embodiment can be suitably used for gasoline engines and engines using low-viscosity oil, in which there are many opportunities for direct contact between the segments and the inner wall of the ring groove. .
  • the internal combustion engine to which the oil ring according to the present invention is applied is not limited to these.
  • the surface treatment films 1c and 1d of the oil ring 40 are a coating film, a resin film, a chemical conversion treatment film, an oxidation treatment film, a nitriding treatment film, a Ni-P plating treatment film, a chromium plating treatment film, and a PVD treatment film. It is configured to include at least one layer of a treated coating and a DLC treated coating. As a result, the wear resistance of the upper surface 13 and the lower surface 14 on which the surface treatment films 1c and 1d are formed becomes more excellent.
  • the surface treatment coating 1c formed on the upper surface 13 of the upper segment 1 may be a coating having an oil-retaining structure. Since the lubricity of the upper surface 13 of the upper segment 1 is improved by imparting oil retention to the surface treatment film 1c, the wear resistance of the upper surface 13 can be further improved.
  • the surface treatment coating 1c may be a coating containing a layer of a phosphate coating, which is an example of a chemical conversion coating.
  • phosphate coating refers to a coating formed by phosphate coating treatment, which is a type of chemical conversion treatment. Examples of the phosphate coating treatment include manganese-based phosphate coating treatment and zinc-based phosphate coating treatment.
  • the phosphate coating is formed of a chemically formed layer, a phosphate crystal layer is formed on the surface, and etching pockets are formed under the crystal layer by local elution of the base material. there is An amorphous layer having high oil retention is formed in the etching pocket.
  • FIG. 2 is a partial cross-sectional view of an internal combustion engine 100A including an oil ring 40A according to a modification of the embodiment.
  • FIG. 2 shows a cross section orthogonal to the circumferential direction of the oil ring 40A.
  • differences from the oil ring 40 shown in FIG. 1 will be mainly described, and the same reference numerals will be given to the same configurations, and detailed description will be omitted.
  • the oil ring 40A differs from the oil ring 40 in that a surface treatment film 2c is formed on the upper surface 23 of the lower segment 2A and a surface treatment film 2d is formed on the lower surface 24 of the lower segment 2A.
  • the lower segment 2A according to the modification includes a base material 2a, an outer coating 2b, a surface treatment coating 2c formed on the upper surface of the base material 2a, and a lower surface of the base material 2a. and a surface treatment film 2d.
  • the surface treatment films 2c and 2d are coating films, resin coatings, chemical conversion coatings, oxidation coatings, nitriding coatings, Ni-P plating coatings, chromium plating coatings, PVD coatings, and DLC coatings. It may be formed as a coating including at least one of the layers.
  • the surface treatment coatings 2c and 2d may be coatings having an oil-retaining structure, and may include a phosphate coating layer.
  • each segment was imaged with a commercially available color CCD camera, and the resulting image was analyzed by commercially available image processing software to obtain the brightness of the axial end face of the segment.
  • the lightnesses of R, G, and B shown in Table 1 are the lightnesses obtained for each hue of RGB in 256 gradations based on the color image obtained by the camera.
  • the brightness of the grayscale shown in Table 1 was obtained by generating a grayscale image with brightness of 256 gradations based on the color image acquired by the camera.
  • the brightness of the grayscale is the brightness of the axial end face when the image of the axial end face of each segment is represented by a grayscale of 256 gradations.
  • the lightness of R, G, and B and the lightness of gray scale were the average values of the lightness obtained at three points on the end surface in the axial direction in the image.
  • Example 1 is an oil ring in which the segment of number 2 is the upper segment and the segment of number 1 is the lower segment.
  • Example 2 is an oil ring in which the segment of number 3 is the upper segment and the segment of number 1 is the lower segment.
  • Example 3 is an oil ring in which the segment of number 2 is the upper segment and the segment of number 3 is the lower segment.
  • a comparative example is an oil ring in which both upper and lower segments are numbered 1 segments.
  • the upper and lower lightness differences shown in Table 2 were calculated based on the grayscale lightness in the segments numbered 1 to 3 shown in Table 1. The identifiability was evaluated as "O" when the upper and lower segments could be identified due to the difference in surface color in visual observation of the axial end face, and as "X" when they could not be identified.
  • the brightness difference in gray scale between the upper and lower segments was 68.9 in Example 1, 58.3 in Example 2, 10.6 in Example 3, and 0.0 in Comparative Example. .
  • the upper and lower segments could be distinguished by the difference in surface color, whereas in the comparative example, the upper and lower segments could not be distinguished by the difference in surface color. From the above test results, it was confirmed that the examples of the present invention are excellent in distinguishability between the upper and lower segments.
  • the various forms described above can be combined as much as possible.
  • the surface colors of a pair of segments may be made different from each other by differentiating the so-called temper color due to discoloration due to oxidation between the base material of the upper segment and the base material of the lower segment.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne une bague de lubrification comprenant : deux segments formés de manière annulaire, afin de suivre la direction circonférentielle de la bague de lubrification et agencés indépendamment l'un de l'autre selon la direction axiale de la bague de lubrification ; et un dispositif d'expansion d'élément d'espacement, disposé entre la paire de segments. Un film de traitement superficiel est formé, sur au moins une partie d'au moins une surface d'extrémité axiale d'au moins l'un de la paire de segments, afin que les couleurs superficielles de la paire de segments diffèrent l'une de l'autre.
PCT/JP2022/024542 2021-08-05 2022-06-20 Bague de lubrification WO2023013265A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280054484.0A CN117795230B (zh) 2021-08-05 2022-06-20 油环

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021128654A JP7224404B1 (ja) 2021-08-05 2021-08-05 オイルリング
JP2021-128654 2021-08-05

Publications (1)

Publication Number Publication Date
WO2023013265A1 true WO2023013265A1 (fr) 2023-02-09

Family

ID=85154169

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/024542 WO2023013265A1 (fr) 2021-08-05 2022-06-20 Bague de lubrification

Country Status (3)

Country Link
JP (1) JP7224404B1 (fr)
CN (1) CN117795230B (fr)
WO (1) WO2023013265A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544575A (ja) * 1991-08-14 1993-02-23 Teikoku Piston Ring Co Ltd 組合せオイルリングのサイドレールおよびその製造方法
JP2003254155A (ja) * 2002-02-27 2003-09-10 Teikoku Piston Ring Co Ltd 組合せオイルリング
JP2006153198A (ja) * 2004-11-30 2006-06-15 Toyota Motor Corp オイルリング
JP2008232312A (ja) * 2007-03-22 2008-10-02 Riken Corp ２ピースオイルリング用線材
WO2018198173A1 (fr) * 2017-04-24 2018-11-01 株式会社リケン Rail latéral
WO2019069748A1 (fr) * 2017-10-05 2019-04-11 株式会社リケン Rail latéral

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102072910B (zh) * 2010-11-13 2012-09-05 上海交通大学 汽车活塞装配质量视觉检测系统
CN110770362B (zh) * 2017-06-20 2022-03-22 日本活塞环株式会社 滑动构件及包覆膜
MX381957B (es) * 2017-07-05 2025-03-13 Tpr Co Ltd Anillo de aceite de combinacion.
CN112361916A (zh) * 2020-11-04 2021-02-12 滨州博海精工机械有限公司 一种用于活塞环装配在线检测的机械装置及方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544575A (ja) * 1991-08-14 1993-02-23 Teikoku Piston Ring Co Ltd 組合せオイルリングのサイドレールおよびその製造方法
JP2003254155A (ja) * 2002-02-27 2003-09-10 Teikoku Piston Ring Co Ltd 組合せオイルリング
JP2006153198A (ja) * 2004-11-30 2006-06-15 Toyota Motor Corp オイルリング
JP2008232312A (ja) * 2007-03-22 2008-10-02 Riken Corp ２ピースオイルリング用線材
WO2018198173A1 (fr) * 2017-04-24 2018-11-01 株式会社リケン Rail latéral
WO2019069748A1 (fr) * 2017-10-05 2019-04-11 株式会社リケン Rail latéral

Also Published As

Publication number Publication date
CN117795230A (zh) 2024-03-29
CN117795230B (zh) 2024-07-23
JP7224404B1 (ja) 2023-02-17
JP2023026722A (ja) 2023-02-28

Similar Documents

Publication Publication Date Title
US8123227B2 (en) Sliding member
EP1431630A2 (fr) Segment racleur d'huile combiné
JP4779841B2 (ja) 内燃機関
US8240676B2 (en) Piston ring
KR20110073557A (ko) 내연 기관의 활주 요소, 특히 피스톤 링
EP3163129B1 (fr) Segment de piston
US7011067B2 (en) Chrome plated engine valve
WO2023013265A1 (fr) Bague de lubrification
CN111133235A (zh) 活塞环
WO2023013264A1 (fr) Bague de lubrification
US11466777B2 (en) Sliding element for an internal combustion engine
JP2003254155A (ja) 組合せオイルリング
EP1519087A1 (fr) Segment de piston revêtu de chrome
US12066111B1 (en) Piston ring
JPH11229958A (ja) 内燃機関用ピストンリングの組合せ
GB2136089A (en) Piston Ring for Internal Combustion Engine
JP6889692B2 (ja) アルコール燃料用ピストン
WO2019208621A1 (fr) Segment de piston
JP7665852B1 (ja) 水素燃料を使用する内燃機関用のピストンリング及び水素燃料を使用する内燃機関におけるピストンリングの腐食抑制方法
JP6802402B1 (ja) 燃焼可視化エンジン
JPH08170563A (ja) ピストンリングの組合せ
JPH10213004A (ja) シリンダライナ
GB1584590A (en) Internal combustion engine cylinder and piston arrangements
JPH02120575A (ja) ピストンリング
JPH11190429A (ja) 組合せオイルリングのスペーサエキスパンダおよび組合せオイルリングならびにその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22852691

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202280054484.0

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22852691

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载