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Patent Searching and Data


Matches 1 - 50 out of 7,583

Document Document Title
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...  
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...  
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...  
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 ...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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, ...  
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...  
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...  
WO/2017/021330A8
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
WO2017008948A1
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...  
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-...  
WO/2016/208698A1
The objective of the present invention is to provide a compressor including a piston ring having improved sealing properties. The present invention provides a compressor characterized by comprising: a cylinder; a piston that reciprocates...  
WO/2016/202485A1
The invention relates to a piston ring (2) having at least one ring flank seal (14), said at least one ring flank seal (14) being arranged on a lower ring flank (8) of the piston ring.  
WO/2016/202297A1
Disclosed is a piston ring, comprising an upper ring (1) and a lower ring located under the upper ring. The lower ring comprises an outer ring (2) and an inner ring (3). The thicknesses of the outer ring (2) and the inner ring (3) are id...  
WO/2016/194767A1
The purpose of this invention is to provide an oil ring for a diesel engine, a pair of rails in the oil ring having excellent independence and following properties, and an excellent side-surface sealing function being achieved for ring g...  
WO/2016/192864A1
The invention relates to a piston (1) for a cylinder (11) of an internal combustion engine (10), comprising - a piston base (2) in the peripheral face (3) of which at least one peripheral groove (4a, 4b, 4c) for receiving a piston ring i...  
WO/2016/177626A1
The present invention relates to a piston ring (1) for internal combustion engines provided with a base comprising a sliding external surface (3), an internal surface (4), an upper surface (5), and a lower surface (6), the external surfa...  
WO/2016/177642A1
A seal ring including a body having an inner surface, an outer surface, and a first side surface, and a tab extending from the body and adapted to prevent rotation of the seal ring relative to a component receiving the tab, wherein the t...  

Matches 1 - 50 out of 7,583