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JP2023181207A |
To provide a resin composition for a seal which is usable in high temperature and high pressure gas, and a seal.A resin composition for a seal is used in a piston ring 1 for sealing gas, wherein when a molding of the resin composition fo...
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JP7402790B2 |
This film comprises Cr, Ti, Si, and N, wherein the Ti is contained in an amount of 0 at% to 25 at% (exclusive of 0 at%), and the film has a NaCl-type crystal structure. This piston ring comprises: a substrate; and said film provided to c...
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JP2023178766A |
To provide a method of manufacturing a piston for an internal combustion engine which can maintain good seal performance between an anode oxidation coating formed on an inner face of a top ring groove and a piston ring even when a high-s...
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JP2023178339A |
To provide a sealing resin composition and a seal which are able to be used in a high-temperature and high-pressure gas.The sealing resin composition is used in a piston ring 1 for sealing for a gas. When a molded article of the sealing ...
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JP7396525B2 |
To provide a piston for an internal combustion engine capable of further reducing a blow-by gas flow rate and the number of particles of discharged particles, allowing surface roughness of an anodic oxide film to the blow-by gas flow rat...
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JP7396905B2 |
To provide a slide member which can materialize all of excellent heat resistance, low aggression to a mating material, high wear resistance, and a low friction coefficient.A slide member 100 has a base material 10 and an amorphous carbon...
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JP2023551557A |
The first annular body (10) and the second annular body (20) of the piston ring (1) are arranged concentrically and adjacent to each other in the axial direction (A). The first annular body (10) has a radially outwardly facing outer surf...
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JP2023172617A |
To provide a piston for an internal combustion engine and a manufacturing method thereof, capable of improving seizure resistance of a skirt face and simultaneously reducing friction.A thrust side skirt portion 18A extending toward a bot...
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JP7393567B2 |
An outer peripheral surface of a compression ring includes a barrel curved surface, in a case where a width of the outer peripheral surface in an axial direction of the compression ring is set as L1, a condition of 0.2 mm ≤ 1/2 × L1 i...
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JP2023172618A |
To provide a piston for an internal combustion engine and a manufacturing method thereof capable of keeping excellent sealing performance of an anodic oxidation film formed on an inner face of a top ring groove and a piston ring, even wh...
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JP7387352B2 |
A scraper ring is provided with a plurality of sealing sections on the radially inner circumferential surface, each including a scraping edge, wherein the sealing sections are spaced axially apart from each other by inner circumferential...
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JP2023549003A |
The present invention comprises a ring body (1) and a ring joint (9), wherein the ring body (1) has a first ring body end (7) forming the ring joint (9) located opposite to each other. ) and a second ring body end (8), the first ring bod...
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JP2023549006A |
The present invention relates to a piston ring having a ring body (1) and a ring joint (9), the ring body (1) being stationary on opposite sides of each other and forming a ring joint (9). It has an end (7) and a second ring body end (8)...
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JP7368166B2 |
To realize further improvement in fuel efficiency and reduction in an oil consumption amount.A method for creating a shape of a 3-piece oil ring installed on a piston of an internal combustion engine comprises: an initial grinding proces...
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JP7364812B2 |
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JP7364811B1 |
The present invention provides a sealing resin composition and a seal that can be used in high-temperature and high-pressure gas. [Solution] The sealing resin composition is a resin composition used for a piston ring 1 for sealing gas, a...
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JP2023543537A |
The present disclosure relates to an oil scraper ring for a piston (2) of an internal combustion engine, wherein the oil scraper ring groove (4) of the piston (2) is arranged without at least one oil drainage hole, and the oil scraper ri...
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JP2023151267A |
To provide a piston capable of preventing scuffing from occurring to an inner peripheral surface of a cylinder, and provide a marine internal combustion engine.A piston includes: a piston body reciprocally moving inside a cylinder where ...
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JP2023150380A |
To suppress leakage of a blow-by gas from a combustion chamber to a crank chamber, leakage of a blowback gas from the crank chamber to the combustion chamber, and oil rise, in an abutment part 21 of a piston ring of a piston which moves ...
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JP2023142634A |
To remove deposits accumulated on a groove bottom of a ring groove.A piston ring 1 that is fitted into a ring groove of a piston, comprises a first projection part 4A and a second projection part 4B projecting inward in a radial directio...
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JP2023133290A |
To provide a piston ring that is improved in terms of wear behavior and/or friction and/or production efforts.A piston ring (10) has flank surfaces (14) and a running surface (12) which are coated. The uppermost layer of the running surf...
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JP7347423B2 |
Provided is a deformed wire which is useful for improving the sealing properties of a pressure ring. The deformed wire is for a pressure ring, and has variation in the width dimensions of no more than 5μm and variation in the thickness ...
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JP2023129437A |
To provide a piston ring that achieves superior sealing and no risk for coating peel-off at a gas tight lock.The piston ring has a ring body, a diameter, a height, an upper ring surface, a lower ring surface, an outer ring surface (12), ...
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JP7344460B2 |
To provide a piston for an internal combustion engine capable of further reducing a blow-by gas flow rate and the number of particles of discharged particles, allowing surface roughness of an anodic oxide film to the blow-by gas flow rat...
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JP2023128730A |
To provide a technology that can improve oil seal performance on a combination oil ring including a pair of segments and a spacer expander.In an oil ring, an inner peripheral apex that is a minimum diameter in an inner peripheral surface...
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JP7343843B2 |
To provide a slide mechanism with a cylinder bore, which suppresses abrasion of a piston ring covered with a hard coating containing carbon as a main component.A slide mechanism comprises a cylinder bore having an iron-based thermal spra...
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JP7339456B1 |
The oil control ring includes an annular main body portion having an inner peripheral surface, an outer peripheral surface, one side surface and the other side surface substantially orthogonal to the inner peripheral surface, and a coil ...
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JP2023537356A |
The present invention relates to an oil scraper ring (4) comprising a ring element (6) comprising an upper ring edge (8), a lower ring edge, a ring inner side and a ring outer side (14). and the ring element (6) is provided with two oppo...
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JP7329163B1 |
A piston ring set according to one aspect is a piston ring set that includes a top ring and an oil ring and is inserted into a cylinder bore of an internal combustion engine, wherein the top ring has an inner peripheral surface, an outer...
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JP2023114442A |
To provide a coating composition which can ensure sufficient surface smoothness of a coating film after drying and baking even if the coating film has a high particle content, and provide a coating film forming method using the coating c...
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JP7313505B1 |
A technique for facilitating assembly of a piston ring in a piston unit that reciprocates within a cylinder is provided. A piston unit that reciprocates in a cylinder includes a piston and a top land member attached to the piston. The pi...
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JP7312792B2 |
An oil ring according to the present invention includes: a pair of segments that are formed following a perimeter direction of the oil ring and that are provided arrayed in the axial direction of the oil ring, independent from each other...
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JP2023099670A |
To provide a piston sealing ring assembly having a gap cover element.The present disclosure provides a sealing ring assembly having a ring and one or more gap cover elements and configured to seal off a high-pressure region from a lower ...
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JP7308316B1 |
A technology capable of further reducing the oil consumption of an internal combustion engine in an undercut-shaped piston ring is provided. The outer peripheral surface of the piston ring has a cut surface forming a notch between the ou...
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JP7307778B2 |
A piston ring combination for mounting to a piston in an internal combustion engine is provided which comprises four compression rings. An outer peripheral surface of a first compression ring includes a barrel face, an outer peripheral s...
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JP2023097976A |
To achieve further low friction at an initial stage when a use of a piston ring starts.A piston ring 1 includes an annular body part 2 having an inner peripheral surface 2c and an outer peripheral surface 2d and a side surface 2a and a s...
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JP7299233B2 |
A piston ring is provided. The piston ring comprises a main section extending along a circumferential direction around a geometrical axis, a first tongue section and a second tongue section, wherein, in use, the first tongue section is c...
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JP7298083B2 |
To provide a piston ring having a hard carbon film which can be easily deposited and has an excellent abrasion resistance.A hard carbon film 4 is formed on at least an outer peripheral slide face 11 of a piston ring base material 1. The ...
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JP7294220B2 |
To adjust tensile force of a piston ring while suppressing ununiformity in a distribution of the tensile force in a circumferential direction of the piston ring, and to suppress increase in consumption of a lubricant even in a case of be...
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JP7292695B2 |
To provide a functional thin film in which a film characteristic such as surface roughness (smoothness), a film strength (hardness), or pulling or compression inside the film (internal stress) is controlled; and to provide a production m...
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JP7291300B1 |
A compression ring used in a spark ignition engine using hydrogen gas fuel and assembled in a piston ring groove of a piston mounted in a cylinder, wherein a reciprocating friction tester is used to evaluate the outer peripheral sliding ...
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JP7290171B2 |
To provide a sliding member comprising a coating film exhibiting constant and stable chipping resistance and wear resistance and excellent in peeling resistance (adhesion), and the coating film thereof. The above-described problem is sol...
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JP2023524726A |
The present invention is in contact with each other in an internal combustion engine by using lubricating compounds comprising - at least one base oil, - at least one oxothiomolybdate salt, and - at least one antiwear compound. A method ...
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JP7284700B2 |
To provide a sliding mechanism capable of reducing an abrasion amount of a hard carbon coating upon combining a first member formed with an iron-based thermal spray coating containing high chromium and a second member formed with the har...
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JP7284308B1 |
A technology capable of further reducing the oil consumption of an internal combustion engine in an undercut-shaped piston ring is provided. The outer peripheral surface of the piston ring has a cut surface provided to form a notch betwe...
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JP7275534B2 |
To suppress abrasion of a ring.A seal ring mechanism 300 comprises: a center ring 310 that is composed of a metal material, and in which from a seal surface 310a side to an outer peripheral surface 310d side opposite to the seal surface,...
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JP2023067967A |
A piston ring capable of maintaining sealing performance over a long period of operation without containing PPS is provided. A piston ring is used in a reciprocating compressor to seal a gap between the outer circumference of a piston an...
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JP2023062620A |
To provide a technique for reducing blow-by gas in an internal combustion engine.In a piston structure 110 for an internal combustion engine 100, a compression ring 1 has an abutment G1. Out of the plurality of compression rings, a first...
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JP2023516701A |
A piston ring assembly 1 comprises first and second endless sealing rings 2 , 4 and an elastic ring carrier 3 . The seal rings 2, 4 extend in the circumferential direction U and have outer peripheral surfaces 2a, 4a, respectively. The se...
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JP7259710B2 |
To prevent oil scared up from an inner peripheral surface of a cylinder with movement of a piston to a combustion chamber side from being scattered in a center direction of the combustion chamber due to inertial force in a case where a p...
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