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WO/2018/053428A1 |
A piston ring having a ring-shaped body with at least one internal wall surface configured to bear against the piston, an exterior wall surface, and at least a top wall surface extending from the exterior wall surface to the at least one...
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WO/2018/046161A1 |
The invention relates to a two-part oil control ring, which comprises an L-shaped main body and an axial stabilization element. The L-shaped main body has a ring flank leg, which is pressed against a piston ring groove flank by the axial...
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WO/2018/041770A1 |
The invention relates to a sliding element, in particular a piston ring, to a method for producing same, and to the use of the sliding element in a tribological system. The sliding element has a coating which has at least one adhesive la...
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WO/2018/034112A1 |
In a fitting section 3 of a piston ring 1: a first protruding section 13 and a first receiving section 14 are provided on a side surface 2a side of a main body section 2; a second protruding section 15 and a second receiving section 16 a...
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WO/2018/019445A1 |
The invention relates to a one-piece oil control ring, which has two scraping ridges (2) and openings (3), which extend from the outside of the ring to the inside; wherein the cross-section of the ring body varies in the circumferential ...
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WO/2018/019940A1 |
The present invention relates to a sliding element for internal combustion engines provided with a coating comprising two layers (14, 15) of hard amorphous carbon (DLC) having a differing percentage of sp 3 bonds and thicknesses and a ro...
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WO/2018/015345A1 |
The invention relates to a piston ring for sealing at least one component of a turbocharger. The piston ring comprises a first ring body which is a base body of the piston ring. The first ring body is formed and designed such that it is ...
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WO/2018/015022A1 |
The invention relates to a hydraulic flight control actuator, comprising a piston-cylinder device, which has a piston and a cylinder, and comprising a double seal device, which has at least one primary seal (1) and at least one piston ri...
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WO/2018/002072A1 |
The present invention relates to a sliding element for internal combustion engines having a coating of hard amorphous carbon comprising nanoparticles of a solid lubricant capable of bringing about a reduction in the friction and, consequ...
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WO/2017/218444A1 |
An engine component, for example a piston ring, including a wear resistant coating applied by physical vapor deposition (PVD) is provided. The coating includes tetrahedral amorphous carbon (ta-C), the carbon of the coating includes sp3 h...
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WO/2017/207172A1 |
The invention relates to an oil control ring, comprising two circumferential ridges (3, 4), the sliding surfaces of which are curved outward, wherein the ridge (3) on the combustion chamber side has an axial height (K) that is greater th...
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WO/2017/207323A1 |
The invention relates to a compression piston ring (1), in particular a piston ring suitable as a second piston ring in a three-ring piston ring set, which piston ring has convex sections (Ax) and concave sections (Av) in alternation in ...
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WO/2017/209135A1 |
In relation to a sliding structure for an internal combustion engine according to the invention, a cylinder is formed to have a plurality of recesses in a stroke center region, a piston ring is formed to have an inclined surface formed a...
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WO/2017/186915A1 |
The invention relates to a sliding element, in particular a piston ring, having a coating which comprises the following layers from the inside to the outside: a polycrystalline, metal-containing adhesive layer, an intermediate layer, and...
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WO/2017/184480A1 |
A piston ring (12) includes a body portion (36) presenting a running surface (44), and a spring member (38) disposed between the body portion (36) and a ring groove (28) of a piston (10). A running surface of the piston ring presents an ...
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WO/2017/182185A1 |
The invention relates to a piston ring which is provided with a DLC (Diamond-like Carbon) layer as a functional/wear protection layer, wherein the DLC layer is covered by a protective layer, the material of which is different from that o...
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WO/2017/167817A1 |
The present invention refers to a piston ring (1) and a method for depositing a multi-layer coating (5) with a nanolayer structure able to guarantee a variable thickness of the coating (5) of the peripheral surface (2) of the piston ring...
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WO/2017/161910A1 |
The invention relates to the field of power equipment. Provided is a horizontally-opposed internal combustion engine, comprising a left cylinder body and a right cylinder body. A plurality of left piston-cylinder units are disposed on th...
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WO/2017/164160A1 |
The present invention provides a combined oil control ring for vehicle engines, wherein even in a long-term engine operation, sticking between a spacer expander and a side rail does not occur, and an excellent oil control function can be...
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WO/2017/157490A1 |
The present invention relates to a three-piece oil stripping piston ring (2) having an upper disc-shaped stripping ring (4), a lower disc-shaped stabilizing ring (6), and a circular expander (8) which has projections (10) which protrude ...
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WO/2017/157309A1 |
A helical coiled seal (08) for sealing a barrel -shaped cylinder piston-cylinder assembly, comprising: a piston-sealing C-shaped ring (401); a connecting C-shaped ring (402) comprising an inward wing (501) protruded inwardly from a secti...
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WO/2017/156494A1 |
Embodiments of a piston ring reduce the volume of a crevice defined between the circumferential wall of a cylinder and a portion of the outer wall of a piston within the cylinder, the portion extending down from the top of the piston. Th...
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WO/2017/155331A1 |
The present invention relates to an alloy cast iron, and a piston ring including the same, the alloy cast iron comprising: a pearlite base; and a graphitized structure precipitated in the pearlite base and a steadite-type process structu...
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WO/2017/150571A1 |
The present invention provides a sliding member capable of achieving high wear resistance and coating adhesion without the need for nitriding a base material even for intense sliding conditions. The sliding member according to the presen...
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WO/2017/149082A1 |
A piston ring (110) for a piston (14) of a reciprocating internal combustion engine. The piston ring comprises a body having an outer contact surface. A tribological coating (126) is formed on the outer contact surface of the body. The t...
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WO/2017/146048A1 |
Provided is a piston ring which can sufficiently exhibit the sealability of the outer circumferential surface thereof and in which increase in oil consumption due to reduction of surface pressure and increase in frictional loss due to pr...
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WO/2017/137500A1 |
The present invention relates to a tribological system (1; 2) with a first body (102; 105) and a second body (101; 107), which each form a component of an internal combustion engine (100), in particular a piston (110), a piston ring (105...
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WO/2017/130587A1 |
The present invention provides a sliding member, in which interlayer peeling is less likely to occur even under tough sliding conditions. The present invention is a sliding member 100 used with lubricating oil, and is characterized by ha...
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WO/2017/104822A1 |
The purpose of the invention is to provide technology, which, in addition to being capable of forming thick hard carbon films of excellent durability even using PVD, is able to establish both chipping resistance and abrasion resistance i...
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WO/2017/077816A1 |
The body (20) of a seal ring is annularly shaped and has a slit (A) formed at one location in the circumferential direction (x). The opposite ends of the body (20), which form the slit (A), have an overlapping section (14) where one end ...
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WO/2017/078586A1 |
Sealing ring for sealing fluid, gas, or steam at high pressure in one or two flow directions between two surfaces with leaning sealing grooves and a sealing ring without split and with a very small cross section that can accept leaning g...
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WO/2017/075327A1 |
A piston for an internal combustion engine having an improved oil control ring is provided. The piston has a piston body providing an upper combustion surface and an annular outer wall depending therefrom. A ring belt region including a ...
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WO/2017/072075A1 |
'Piston rings in cast tool steels and process for the manufacture thereof', belonging to the field of piston rings of tool steel for internal combustion engines, relates to cast piston rings of tool steels the microstructure whereof is c...
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WO/2017/059971A1 |
The invention relates to a piston ring for an internal combustion engine, comprising at least one recess provided on a ring flank of the piston ring, the at least one recess having a varying depth profile in the peripheral direction of t...
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WO/2017/058536A1 |
A power cylinder system (8) for a reciprocating engine (10) includes a piston (20) configured to move within a cylinder (26) of the reciprocating engine. The system also includes a groove (50) extending circumferentially about the piston...
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WO/2017/056810A1 |
Provided is a driver configured so that the size of a piston will not increase in a center axis direction. A driver (10) has: a driver blade (23) for impacting a fastener (48); a piston (18) to which the driver blade (23) is mounted; a c...
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WO/2017/043022A1 |
Provided is a sliding member that has both excellent abrasion resistance and excellent coating adhesion even under harsh sliding conditions. The present invention is a sliding member 100 to be used in the presence of a lubricating oil an...
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WO/2017/032645A1 |
A piston ring is described comprising at least a metal base (1), a sliding face (10), a superior face (20) and an inferior face (30), the interceptions between the sliding face (10) and the superior and inferior faces (20, 30) defining, ...
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WO/2017/026042A1 |
Provided is a piston ring on which a membranous carbon film is formed with good productivity on the external peripheral sliding surface and the top and bottom surfaces, the carbon film being optimized so as to be adapted to the performan...
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WO/2017/026043A1 |
Provided is a piston ring having excellent low-friction properties and abrasion resistance manufactured without the need for precision control using an ordinary film formation device that does not have a special function. A piston ring o...
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WO/2017/022659A1 |
[Problem] To provide a piston ring having a hard carbon film that is easy to form and that has excellent wear resistance. [Solution] This problem is solved by having a hard carbon film 4 formed on at least the outer peripheral sliding su...
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WO/2017/021565A1 |
The invention relates to low-alloy steel with high mechanical resistance and high resistance to high-temperature oxidation, with the following composition: 0.37% ≤C ≤ 0.43%, 2.25% ≤ Si ≤ 2.50%, 0.75% ≤ Mn ≤ 1.50%, 0.15% ≤ C...
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WO/2017/021330A1 |
The present invention ('PISTON RINGS OF CAST NITRIDABLE STEELS AND PROCESS OF PRODUCTION') describes an alloy and the process for the obtainment of cast parts suitable for piston rings of nitridable steels having a relatively high conten...
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WO/2017/022660A1 |
[Problem] A piston ring, and a manufacturing method thereof, having a hard carbon film that is easy to form and that has excellent adhesion and wear resistance. [Solution] The aforementioned problem is solved by means of a piston ring ha...
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WO/2017/016537A1 |
The invention relates to a compression piston ring, comprising a running surface, an inner peripheral surface, and upper and lower flank surfaces extending therebetween, wherein a slight taper < 30' having an axial height of 10-30%, with...
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WO/2017/019927A1 |
A system, includes a piston. The piston has a first outer diameter and includes an annular ring groove that receives a ring. The annular ring groove is defined by a top surface, a bottom surface, and an inner surface that extends between...
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WO/2017/012796A1 |
The invention relates to a piston ring of a reciprocating piston internal combustion engine, comprising a ring body with an open abutment, a radially outer running surface side, a radially inner circumferential side, two axially opposite...
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WO/2017/014139A1 |
The purpose of the present invention is to provide: a piston ring with which aluminum adhesion can be prevented over long periods even when used in a high temperature, high pressure environment and which exhibits excellent side surface a...
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WO/2017/008948A1 |
The invention relates to a compression piston ring (2) with a running surface region (4), an upper flank (6), a lower flank (8), and an inner circumferential surface (10). The running surface region (4) is provided with a profiled sectio...
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WO/2017/006545A1 |
The purpose of the present invention is to provide an internal combustion engine piston ring for which it is possible to scale down a corner-cut section without generating chips, thereby making it possible to make the flow path for blow-...
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