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WO/2014/206386A1 |
The invention relates to a method for producing a piston ring (1) with reduced shock pressure, in which a base body (1') which is rectangular in the cross-section is subjected to a nitriding process in the region of all the outer surface...
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WO/2014/194875A1 |
Disclosed is a piston ring (1) comprising a main body having a sliding surface (2), an inner peripheral surface and upper and lower flanks extending between said surfaces, wherein the main body is provided with a gap and in particular in...
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WO/2014/194874A1 |
The invention relates to a method for producing a piston ring composed of cast iron or cast steel by producing a piston ring main body which, viewed over the circumference, is coated with at least one PVD layer of variable layer thicknes...
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WO/2014/196614A1 |
In order to provide a large steel ring that is lighter and thereby contributes to improved fuel consumption, that has lower tensile strength, and has excellent wear resistance and scuffing resistance, and in order to also provide a raw m...
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WO/2014/183180A1 |
The present invention relate to a piston ring (10) for use on internal combustion engines, more particularly, a ring (10) having a metallic base (1), where the outer portion of its ends receives two layers applied subsequently to provide...
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WO/2014/180985A2 |
The present invention relates to a running set for use in an internal combustion engine, comprising at least one cylinder liner (4) or an engine block having at least one integrated cylinder (4') and having at least one piston ring (2), ...
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WO/2014/179019A1 |
An expandable seal features a ring structure with internal and external seal. The seals are mounted in grooves and extend beyond a base outer dimension on the ring on the inside and the outside surfaces. Bumps are positioned in axial ali...
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WO/2014/175845A1 |
The present invention relates to a piston sealing system (1) which prevents the performance of the engine to decrease in time and elongates the life of the engine by enabling sealing of the ring between the piston and the cylinder; and h...
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WO/2014/169368A1 |
The device relates to general mechanical engineering, and in particular to seals and pistons, and can be used for sealing pistons in cylinders of piston engines, preferably in internal combustion engines. The problem addressed by the pro...
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WO/2014/166997A1 |
The invention relates to a piston ring (1) having an outer peripheral surface, an inner peripheral surface and two flanks, wherein the peripheral surface has a spherical profiled section, and wherein the axial width of the running surfac...
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WO/2014/161696A1 |
The invention relates to a method for producing a piston (1) for internal combustion engines, said piston comprising a circumferential trapezoid annular groove (2) for receiving trapezoid rings with small axial dimensions and the groove ...
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WO/2014/161677A1 |
The invention relates to a piston ring (2) having wear indication (42), comprising a piston ring body (4). The piston ring body has an outer surface (6), an upper ring flank (8), and a lower ring flank (10). The outer surface (6) of the ...
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WO/2014/158734A1 |
The invention provides a dykes-type piston ring (20) having a finished outer diameter and negligible tangential tension. The method includes the steps of machining a stock bar to an initial outer diameter slightly greater than the finish...
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WO/2014/156820A1 |
In order to provide a seal device that has a sealing structure that enables assembly without a decrease in efficiency in a CVT assembly step and that does not leak oil even in situations when an engine is off and an oil pump is not opera...
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WO/2014/156819A1 |
In order to provide a seal device that has a sealing structure enabling assembly without causing a reduction of efficiency in a CVT assembly step, and that does not leak oil even in situations in which an engine is halted and an oil pump...
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WO/2014/159795A1 |
A method of manufacturing a coated piston ring includes applying a layer of an aluminum-based material to an outside surface of a ring body formed of an iron-based material, such as steel. The layer of an aluminum-based material is appli...
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WO/2014/144378A1 |
Exemplary pistons and oil control ring assemblies are disclosed, along with methods of making and using the same. An exemplary piston assembly (100) includes a main body (102) defining an outer circumferentially disposed groove (106), an...
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WO/2014/138829A1 |
A sliding set is described for use in an internal combustion engine, the sliding set having at least a liner or cylinder of an engine block (1) which defines an internal sliding surface (2) and at least a piston ring (3) substantially sh...
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WO/2014/133095A1 |
Provided is a piston ring having a hard carbon coating film which can be easily formed in the same batch step, suffers no interlaminar separation, and is excellent in terms of initial affinity and wear resistance. The hard carbon coating...
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WO/2014/131098A1 |
The present invention relates to a piston ring (10) for use as compression ring in diesel engines provided with superior power of at least 190kW. A particularity of the invention is the fact that the metallic base (1) to which is associa...
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WO/2014/115457A1 |
This sliding member comprises: a base; a hard chromium plating layer that is formed on the surface of the base and is mainly composed of chromium; and a hard carbon layer that is formed on the hard chromium plating layer and is mainly co...
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WO/2014/111294A1 |
The invention relates to a sliding element, in particular a piston ring, having at least one running surface. The running surface comprises a coating, which from the inside to the outside has at least one first adhesive layer, a hard hyd...
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WO/2014/107780A1 |
The present invention relates to a piston ring (A) for use in internal combustion engines, provided with annular body defining an outer lateral surface (1) which slides relative to the cylinder wall and which comprises at least a first r...
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WO/2014/108226A1 |
The present invention relates to a piston ring (2) with increased fatigue strength, made of a plastically deformable material. The piston ring (2) has a bearing surface (4) which is limited at the top by an upper bearing surface edge (3)...
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WO/2014/106175A1 |
Exemplary piston rings are disclosed, comprising a base portion formed of a metallic material, and an outer contact surface extending between opposing side faces of the piston ring. The piston ring may include a coating layer applied to ...
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WO/2014/103940A1 |
The purpose of the present invention is to provide a cylinder and piston ring assembly, wherein when combining a cylinder obtained from a hyper-eutectic Al-Si alloy with a hard carbon film-coated piston ring, both exhibit excellent abras...
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WO/2014/100871A1 |
The present invention relates to a partially nitrided piston ring (1, 2, 3, 4). The piston ring (1, 2, 3, 4) disclosed in this specification defines at least a portion of its inner face (1d, 2d, 3d, 3.1d, 4d) free from a nitrided layer (...
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WO/2014/091831A1 |
Provided is a piston ring sprayed coating that has superior wear resistance and suppresses wear to another member. The piston ring sprayed coating is obtained by spraying a powdered composition onto the outer peripheral sliding surface o...
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WO/2014/088096A1 |
In order to provide a multilayer hard-film-coated piston ring which can be used in engines in an environment where high mechanical and thermal burdens are imposed and which is excellent in terms of scuffing resistance, wear resistance, a...
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WO/2014/072115A1 |
The invention relates to a piston ring with an outer running surface, two flanks and an inner circumferential surface. Said running surface has a profile with a groove. The groove is arranged between two running surface sections with res...
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WO/2014/072113A1 |
The invention relates to a piston ring (1) with an outer running surface (3), two flanks (5, 6) and an inner circumferential surface (7). The running surface (3) has a profile. The profile of the running surface is essentially convexly s...
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WO/2014/073430A1 |
Provided is a dimpled piston ring in which the necessary oil film thickness at an outer peripheral surface is maintained and increases in a friction coefficient are minimized even in the vicinity of the top dead center and the bottom dea...
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WO/2014/066965A1 |
Invention patent: "Single-piece oil control ring". The present invention relates to a single-piece oil control ring for mounting in a piston ring groove, comprising a body that defines at least one upper portion (2) and one lower portion...
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WO/2014/068040A1 |
The present application relates to a sliding element, in particular a piston ring, having at least one sliding surface which has a coating which has, from the inside outwards, a metal-containing bonding layer and a DLC layer, where the D...
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WO/2014/064291A1 |
The piston ring (1) for a reciprocating compressor comprises: a one-part sealing ring (2) that extends in a peripheral direction (N) about a center (M) with an axial direction (H) and has an arcuate outer surface (2k), the sealing ring (...
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WO/2014/059226A1 |
A method of coating all surfaces of a plurality of piston rings in a single run by a chemical vapor deposition (CVD) process is provided. The method can include providing a coil fonned of an iron-based material; heating the coil; and dep...
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WO/2014/054130A1 |
Provided is a wire for piston rings with which variation in the width of the piston ring gap is reduced, workability during coiling is excellent, and which can be manufactured at low cost. This wire for piston rings is obtained from stee...
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WO/2014/054286A1 |
Provided is a piston ring which is capable of maintaining excellent aluminum adhesion preventing effect for a long period of time in an engine where the temperature in the vicinity of the piston ring is high. The present invention is a p...
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WO/2014/047703A1 |
The present invention relates to a three-piece oil ring for internal combustion engines, comprising an expanding element (2) associated with a first, upper annular segment (3) and a second, lower annular segment (4) which are provided wi...
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WO/2014/052290A1 |
Improved oil control piston rings with reduced friction compared to prior art rings are disclosed for use in liquid lubricated internal combustion engines, gas pumps, and gas compressors. The ring assemblies are interchangeable with conv...
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WO/2014/046627A1 |
In order to reduce losses in a piston machine due to resistance of the lubricant against displacing the piston (1) furnished with at least piston ring (3, 3', 3") along the cylinder (2), and consequently to improve efficiency of operatio...
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WO/2014/044370A2 |
A piston (1) may comprise a piston body (4) having a piston skirt (6). The piston (1) may further comprise at least one piston ring groove (10, 12, 14) arranged in the piston skirt (6). A lowermost piston ring groove (14) may be arranged...
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WO/2014/043666A1 |
Improved liquid lubricated piston ring gas seals with reduced friction and wear compared to prior art rings are disclosed for use in internal combustion engines, gas pumps, and gas compressors. These improved rings allow independent adju...
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WO/2014/040155A1 |
The present invention relates to a metal member of a moving system - such as a piston ring (1) - basically manufactured in a single step designed for: hardening the surface of the metal member by means of technical processes applied at t...
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WO/2014/040940A1 |
The invention concerns a novel wear-protection layer for piston rings of internal combustion engines and a method for applying a wear-protection layer of this type during production of a piston ring. The protective layer is characterized...
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WO/2014/034034A1 |
A piston structure for an engine is provided with: a piston (1); a connecting rod (10) which has a small end section (10a) connected to the piston (1) and also has a large end section (10b) connected to a crankshaft; a piston pin (2) whi...
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WO/2014/034180A1 |
Provided is a piston ring capable of maintaining a superior aluminum adhesion prevention effect in a high output engine over a long term. One embodiment of this piston ring is a piston ring coated on at least one of the top face or botto...
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WO/2014/024799A1 |
In order to provide a wire rod for taper faced compression rings with which the run-in surface (contact surface) can be formed uniformly and rapidly in a taper faced compression ring manufacturing process, the wire rod has a configuratio...
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WO/2014/023615A1 |
The present application relates to a sliding element, in particular a piston ring, having a coating (10) on a substrate (12), which forms at least one sliding surface of the sliding element. The coating (10) has, from the inside outwards...
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WO/2014/019945A1 |
A piston for a two-stroke internal combustion engine has a crown and a skirt extending from the crown. The skirt defines a reciprocation axis of the piston. A circumferential piston groove is defined in the crown. An annular ring carrier...
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