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WO/2020/099001A1 |
A piston (10) of a cylinder of an internal combustion engine, with a piston skirt (12), with a ring belt (13) which is positioned on a first axial side of the piston skirt (12) and has a plurality of ring grooves (15) which are delimited...
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WO/2020/100564A1 |
In this piston ring combination, a second outer peripheral surface, which is the outer peripheral surface of a second ring, has a second protruding surface curved into a convex shape outward in the diametrical direction of the second rin...
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WO/2020/095807A1 |
Provided is a piston ring for an internal combustion engine, and in particular, a piston ring wherein a second pressure ring has excellent abrasion resistance, and both reduced fuel consumption and efficient combustion can be achieved. T...
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WO/2020/074518A1 |
A method of continuously depositing a coating on a substrate comprises (a) depositing a first layer of ta-C on a substrate via a CVA process, said first layer having a first hardness and a first thickness of 100 mm or greater; (b) adjust...
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WO/2020/067539A1 |
Provided is an internal combustion engine oil ring with which it is possible to reduce undulations generated during manufacture of the oil ring, and to improve the oil sealing performance, while maintaining an effect of reducing oil cons...
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WO/2020/053017A1 |
A piston ring (1) is provided, having a bearing surface (2), an inner surface (4), a lower ring flank (6) and an upper ring flank (8), wherein, at the transition between inner surface and upper ring flank, there is situated a cutout (10)...
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WO/2020/050336A1 |
A piston ring according to the present invention has formed on the outer circumferential surface thereof a surface relief structure in which groove parts and land parts alternately extend in a prescribed direction, and is characterized i...
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WO/2020/035188A1 |
The invention relates to a three-part oil scraper ring, comprising an upper scraper ring (24) and a lower scraper ring (26), wherein the scraper rings (24, 26) are maintained at a distance by an expander spring (34) and pressed radially ...
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WO/2020/036941A1 |
A split bearing protector with a flexible design that adds improved moisture protection to a bearing and can be installed without removing the bearing from the machine in which it is installed.
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WO/2020/035252A1 |
The invention relates to a three-part oil scraper ring, with an expander spring and two scraper rings, comprising a ring body (4) with an upper side (6), a lower side (8), a ring inner surface (10) and a ring outer surface (12), which ha...
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WO/2020/031088A1 |
A sealing ring (1), preferably an oil-scraper, for an endothermic engine piston, including an annular body (5) and at least a first and a second slider (6, 7) radially protruding on the outside from the annular body and radially delimite...
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WO/2020/022308A1 |
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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WO/2020/020415A1 |
The invention relates to a method for joining or fitting a first connection part with or into a second connection part of a machining head for thermal material machining, wherein the first connection part has, on an outer circumferential...
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WO/2020/015897A1 |
The invention relates to a multi-piece piston ring (10) comprising: a top oil scraper ring (2) with two flank faces (24, 26), an outer scraper face/edge (20) and an inner spring bearing face (22); a bottom support ring (4) with two flank...
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WO/2020/004529A1 |
In order to provide a combination oil control ring for an automobile engine capable of maintaining an excellent oil control function without the occurrence of sticking between a spacer-expander and a side rail, even if the engine is oper...
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WO/2020/004061A1 |
The present invention addresses the problem of providing a piston ring coated with a DLC coating that has excellent wear resistance and a low attacking property against a cylinder bore sliding surface. The problem is resolved by means of...
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WO/2019/229070A1 |
An unchamfered piston ring that is pre-treated by grit blasting to a defined roughness, followed by PVD coating with a metal nitride to a thickness of at least 10pm, leaving peaks and valleys in the coated piston ring. The coated piston ...
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WO/2019/225544A1 |
In the outer circumferential section of a piston band (62) in a free state before disposed in a cylinder (11), a large diameter section (102) is formed close to or away from a tip portion of a piston rod, a medium diameter section (106) ...
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WO/2019/208621A1 |
In order to provide a piston ring having excellent thermal sagging resistance and excellent side surface wear resistance, even in a high temperature and pressure environment exceeding 300°C and up to 400°C, steel containing, as % by ma...
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WO/2019/208031A1 |
Provided are a fluid machine with which it is possible to increase abrasion resistance and extend maintenance cycle, and a machine element and a fluorine resin material for use therein. The machine element comprises a member (31) having ...
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WO/2019/208182A1 |
In a compressor provided with a cylinder, and a piston which reciprocates in an axial direction inside the cylinder, this piston ring seals a gap between an outer circumferential portion of the piston and an inner wall surface of the cyl...
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WO/2019/203358A1 |
The piston ring according to the present invention, in a cross-sectional view along an axial direction, has an outer peripheral surface including a tapered part that widens diametrally outward from an upper side of the axial direction to...
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WO/2019/203905A1 |
The subject matter described herein relate to a segmented piston seal system. The segmented piston seal includes a first semi-circular section (FSCS) that includes a first locking structure at opposite ends of the FSCS. The segmented pis...
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WO/2019/192828A1 |
The invention relates to a piston ring with improved wear properties, said piston ring having a running surface, an upper ring flank, a lower ring flank, and an inner surface. The piston ring has a radius R, and a contoured running surfa...
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WO/2019/194104A1 |
An oil control ring according to the present invention comprises: a pair of side rails; and a spacer expander disposed between the pair of side rails. The spacer expander has: a plurality of ear parts which inner peripheral surfaces of t...
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WO/2019/185546A1 |
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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WO/2019/179643A1 |
The invention relates to a piston ring for a two-stroke engine with a wear display, comprising a piston ring body with an outer face, two piston ring flanks, and a piston ring inner face. The invention is characterized in that the outer ...
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WO/2019/167241A1 |
A piston ring (1) is configured so that a recess (100) is formed in an outer sliding surface (10) and has: a deepest section (110) where the outer diameter of the recess (100) is smallest; and a sloped section (120) which has a diameter ...
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WO/2019/166144A1 |
The invention relates to an MF expander spring (20) for a three-part oil scraper ring (2, 4, 6, 8). This comprises a steel strip that is corrugated in a trapezium- or diamond-shape in the axial direction, wherein the MF expander spring (...
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WO/2019/142668A1 |
An oil ring 1 has an oil ring body 10 provided with a land 30 protruding diametrally outward, and a coil expander 20 that is mounted on a diametrally inward portion of the oil ring body and that biases the oil ring body diametrally outwa...
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WO/2019/143267A1 |
The solution relates to the field of mechanical engineering, specifically to engine manufacture, and can be used in piston-cylinder assembly parts for internal combustion engines. The present ring, comprising an inner surface and an oute...
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WO/2019/142380A1 |
The purpose of the present invention is to improve seal performance and reduce oil consumption. According to the present invention, in a state in which a combination oil ring is mounted in an oil ring groove and yet to be inserted into a...
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WO/2019/130769A1 |
Provided is a sliding member which simultaneously exhibits high abrasion resistance and a low friction coefficient and which has a hard carbon film having excellent peeling resistance. This sliding member 100 is characterized by having a...
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WO/2019/124389A1 |
This piston ring for an internal combustion engine comprises a resin composition and has a joint section, wherein the ratio (m/d1) of the dimension m of a gap in the joint section in a free state with respect to the dimension d1 of the o...
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WO/2019/105979A1 |
A piston ring (10) has a running surface (12) and flank surfaces (14) which are coated, wherein the uppermost layer of the running surface (12) is a hydrogen-containing or hydrogen-free DLC layer, and said piston ring (10) is characteriz...
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WO/2019/091683A1 |
The invention relates to a combination of a piston and a two-part oil scraper ring. The piston has a stepped piston ring groove having a main groove and a secondary groove. The two-part oil scraper ring comprises a base, which has a ring...
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WO/2019/087562A1 |
The present invention can be used for an internal combustion engine having the principal parts thereof made of an aluminum alloy, and exhibits excellent productivity. Provided are a pressure ring, an internal combustion engine using the ...
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WO/2019/081240A1 |
The invention relates to a piston compressor (1) for compressing a working fluid, particularly a liquid or gaseous fuel, comprising a piston (4) that can move back and forth in a borehole (2) of a cylinder (3) and defines a compression c...
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WO/2019/084320A1 |
Disclosed herein are embodiments of an aging heat treatment that can be used to replace conventional aging steps when making alloy embodiments of the present disclosure. Embodiments of the disclosed aging heat treatment reduce cost and c...
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WO/2019/079644A1 |
A continuous length of formed metal retaining material can be cut to the partial or full circumference or perimeter of at least one assembly component and disposed in a groove of at least one assembly component to form a retaining ring e...
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WO/2019/078052A1 |
Provided is a sliding member which has a hard carbon film that has a good balance between high separation resistance and high wear resistance even if the thickness thereof is 3 μm or more. A sliding member 100 according to the present i...
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WO/2019/074620A1 |
An apparatus and a method include a piston in a cylinder bore for an internal combustion engine. The piston has an outer cylindrical surface with a first annular groove adjacent a second annular groove. The first annular groove is adjace...
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WO/2019/072581A1 |
The present invention relates to a bronze-polytetrafluoroethylene compound based on an oxidation-resistant bronze powder, and to a method for producing the bronze-polytetrafluoroethylene compound. In another aspect, the present invention...
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WO/2019/069748A1 |
A side rail 1 comprises: an outer peripheral surface 14 that faces outward in the radial direction; an inner peripheral surface 13 that faces inward in the radial direction; a first axial-direction side surface 11 that faces toward one s...
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WO/2019/065830A1 |
Provided is a piston ring to be combined with a low friction cylinder liner, with which it is possible to obtain a friction reducing effect of the low friction cylinder liner even at low rotational speeds when the rotational speed of an ...
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WO/2019/064525A1 |
Provided are a segment, a combined oil ring, and a segment manufacturing method, with which independent rotation of the segments can be prevented while accommodating lower tensile force in the combined oil ring. The inner-circumferential...
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WO/2019/054355A1 |
In order to provide a spacer expander for a combined oil control ring with which an excellent oil control function can be maintained without generating adhesion between the spacer expander and a side rail even when an engine is operated ...
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WO/2019/048190A1 |
The present invention relates to a piston (1) for an internal combustion engine (10) having a piston head (2) and a piston skirt (3), wherein the piston head (2) has a circumferential annular part (4) and, in the region of the annular pa...
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WO/2019/045520A1 |
The present invention provides a manufacturing method for a piston ring, the method comprising the steps of: placing a piston ring inside a physical deposition apparatus, introducing inert gas thereinto, and feeding reactive gas containi...
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WO/2019/039519A1 |
This oil ring (1) is provided with an annular body (2) having: an inner peripheral surface (2a); an outer peripheral surface (2b); one side surface (2c) and the other side surface (2d), which are substantially perpendicular to the inner ...
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