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WO/2011/091876A1 |
The invention relates to an improved oil control ring, comprising a ring body (2), two radially outer projections (4) on the ring body (2), which are arranged one behind the other in the running direction of the piston and which are spac...
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WO/2011/085754A1 |
The invention relates to a piston ring (1) for a piston (2) of an internal combustion engine. In the undeformed state the piston ring has a round outer circumference (5), a non-round inner circumference (6) and a ring joint (7), at which...
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WO/2011/079360A2 |
The present invention addresses the problem of how to prevent the nitrided layer on piston rings for flex-fuel engines from becoming detached, without affecting wear resistance. For that purpose, a nitrided piston ring (100, 100') is pro...
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WO/2011/075804A1 |
The present invention relates to a piston ring designed in particular for use in internal combustion engines or compressors, and comprising at least one metallic base (2) to which is applied by physical vapour deposition (PVD) a multilay...
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WO/2011/072941A1 |
In a conventional piston, there must be sufficient play between piston and cylinder in order to prevent the piston from running against the cylinder upon advanced wear of the support ring due to the resulting traverse movement of the pis...
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WO/2011/072063A1 |
An improved oil and gas seal assembly for an internal combustion engine that includes a scraper ring retained within an annular containment groove that, in several embodiments, is formed in the side wall of the cylinder and sized to allo...
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WO/2011/071049A1 |
Provided is a piston ring which can retain, over a long period, the excellent effect of preventing aluminum adhesion in a high-power engine. At least one of the upper and lower surfaces of a piston ring is coated with a polyimide coating...
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WO/2011/064888A1 |
Provided is a piston ring wherein the antiwear property, the gas seal property, and the oil removing property can be simultaneously satisfied; a sliding surface of the piston ring is prevented from being damaged or scuffed; the inner per...
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WO/2011/060521A1 |
The invention relates to piston rings as described in the title, with various models of compensating rings, AC1 (fig. 1), AC2 (fig. 5), AC3 (fig. 13), AC4 (fig. 15), AC5 (fig. 20), AC6 (fig. 26) and AC7 (fig. 29), characterised by interl...
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WO/2011/057875A1 |
The invention relates to a piston ring (1), in particular a compression piston ring, comprising a travel surface (2), upper and lower flank regions (4), an inner circumferential region (3) and a pusher (5), wherein the wall thickness (d)...
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WO/2011/051008A1 |
The invention relates to a sliding element, in particular a piston ring, preferably made of cast iron or steel, comprising a coating having a CrN, an Me(CxNy), and a DLC layer extending from the inside to the outside, wherein the DLC lay...
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WO/2011/048864A1 |
Provided is a piston which reduces the amount of the air-fuel mixture to be discharged unburned and prevents piston rings from conglutinating due to heat. In the piston (2) on the outer circumferential surface of which a plurality of cir...
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WO/2011/047922A1 |
The invention relates to a multi-part piston ring (1), comprising an at least one-piece spring carrier (8), which is provided with a joint region (4), and an at least one-piece spring element (3), which is positioned in a groove (9) prov...
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WO/2011/043364A1 |
Disclosed is an oil ring for an internal combustion engine, which does not undergo the adhesion or deposition of an oil sludge and does not cause the adhesion between constituent members of an engine when the engine is driven for a long ...
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WO/2011/040066A1 |
Provided is a combined oil ring which permits oil consumption to be reduced and the performance of which remains unchanged for a long period of time. More specifically, provided is a combined oil ring consisting of an oil ring body which...
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WO/2011/039015A1 |
The invention relates to an oil scraper ring (5) for a piston (1) of an internal combustion engine, wherein the piston has a circumferential groove (4) for receiving the oil scraper ring, the axial height of said groove being approx. 1 m...
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WO/2011/035399A1 |
The present invention refers to a piston ring, particularly for use in the piston channel of an internal combustion engine or a compressor, comprising at least a substantially ring-shaped metallic base (2) having at least a first region ...
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WO/2011/000068A1 |
There is described a piston ring, particularly devised for use in internal combustion engines or compressors, comprising at least a metallic base (2) to which there is applied, by the process of physical vapor deposition (PVD), a coating...
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WO/2010/151695A2 |
In some aspects, there is provided an apparatus. The apparatus may include a cylinder for a reciprocating steam engine, wherein the cylinder further comprises a cylinder ring. The cylinder ring may include a face and a heel, wherein the ...
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WO/2010/133384A1 |
The invention relates to a gliding element of an internal combustion engine, especially a piston ring, having a DLC coating of the ta-C type which has at least one residual stress gradient.
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WO/2010/133929A1 |
An oil ring mechanism of a piston (10) includes a circumferential ring groove (13) formed in an outer peripheral surface of the piston (10), and a two-piece oil ring (16) having a ring-shaped ring main body (17) that is arranged in the r...
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WO/2010/133633A1 |
The invention relates to a gliding element of an internal combustion engine, especially a piston ring, having a DLC coating of the ta-C type which has at least one residual stress gradient, a negative residual stress gradient being prese...
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WO/2010/098382A9 |
Provided is a piston ring with a sprayed coating which exhibits excellent wear resistance and scuff resistance and makes little attack against a mating member. Specifically provided is a piston ring which has, on the sliding surface, a s...
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WO/2010/124353A1 |
There is described an oil control ring (1 ) designed for internal combustion engines and formed by a ferrous body less than 2.0 millimeters high, which comprises two external contact surfaces (102) where each surface (102) contains a fir...
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WO/2010/108685A1 |
The invention relates to a steel piston ring and a steel cylindrical sleeve having a base body consisting of a steel material composition having a good nitratability. The steel material composition consists of the following elements: bet...
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WO/2010/108528A1 |
The invention relates to a steel material composition, especially for producing piston rings and cylindrical sleeves, having a good nitratability. Said composition contains the following elements in a given quantity in relation to 100 wt...
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WO/2010/108596A1 |
The invention relates to a system for sealing a piston (2) guided in a cylinder bore, having a piston (2) and a piston ring (9). The piston ring (9) is inserted in a recess (15) made in an outer circumference of the piston (2) for axiall...
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WO/2010/108529A1 |
A steel material composition in particular for manufacturing piston rings and cylinder liners, which has a good nitriding capability, contains the following elements in the given proportion related to 100% by weight of the steel material...
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WO/2010/105710A1 |
The invention relates to a method wherein nanoparticles are first produced and then infused in the coating during the coating process by means of a PVD and/or CVD method. A sliding element comprises a coating formed by means of a PVD and...
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WO/2010/097103A1 |
The invention relates to a steel material composition, in particular for producing piston rings and cylinder sleeves, containing the following elements in the given fractions in relation to 100 % by weight of the steel material: 0.5 - 1....
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WO/2010/097105A1 |
The invention relates to a steel material composition, in particular for producing piston rings and cylinder sleeves, containing the following elements in the given fractions in relation to 100 % by weight of the steel material: 0.5 - 1....
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WO/2010/097107A1 |
A steel material composition, in particular for producing piston rings and cylinder liners, comprises the following elements in the listed quantities, relative to 100% by weight of the steel material: 0.5 – 1.2% by weight C, 0 – 3.0%...
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WO/2010/097106A1 |
The invention relates to a steel material composition, in particular for producing piston rings and cylinder sleeves, containing the following elements in the given fractions in relation to 100 % by weight of the steel material: 0.03 - 2...
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WO/2010/094247A1 |
A compression piston ring (1) for an internal combustion engine, comprising a sliding surface formed by two webs (2, 3), upper (4) and lower (5) flank surfaces, and an inner circumferential surface, wherein the lower web (3) runs at leas...
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WO/2010/084071A1 |
In a conventional piston, sufficient backlash must be provided between the piston and cylinder in order to prevent the piston from running against the cylinder upon advanced wear of the support ring due to the resulting transverse moveme...
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WO/2010/085206A1 |
A sealing sleeve for sealing between piston and cylinder wall in internal combustion engines with a height in the direction of piston movement that is at least three times as large as its width in the radial direction of the cylinder hav...
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WO/2010/075207A1 |
A piston assembly configured to reciprocate within a cylinder of an internal combustion engine is disclosed. The piston assembly comprises a top surface, a cylindrical wall, a first ring, a second ring, and at least one passage. The cyli...
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WO/2010/054612A1 |
Piston ring for an internal combustion engine, comprising a running surface (2), an upper (3) and a lower flank surface and an inner circumferential surface (4), wherein at least one of said surfaces is provided with at least one marking...
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WO/2010/048202A2 |
An interactive sealing arrangement includes a sealing member operatively disposed across a gap between a first wall and a second wall that is moveable relative to the first wall and at least partially defines a storage chamber. A passage...
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WO/2010/043669A1 |
In a method for coating a sliding element, in particular a piston ring or a cylinder liner of an internal combustion engine, DLC phases are embedded into a hard material layer as said hard material layer is deposited. A sliding element,...
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WO/2010/040596A1 |
A sliding element in an internal combustion engine has a coating which has the following layers from the outside inwards: a first carbon-based layer, a second carbon-based layer which is harder and/or has a smaller proportion of hydrogen...
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WO/2010/015289A1 |
The invention relates to a sliding element for an internal combustion engine, comprising at least one running surface, characterized by a running surface coating made of an alloy based on copper which comprises at least one additive from...
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WO/2009/157328A1 |
Provided is an oil ring (Ro) for an internal combustion engine, wherein an outer circumferential surface (1) is coated with at least one kind of material selected from among a group composed of hard carbon, CrN and TiN, and a curvature r...
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WO/2009/153217A2 |
In a method for producing a piston (10) for an internal combustion engine, at least the region of the upper annular groove (12) is at least partially recessed, an adhesion promoter layer containing aluminium is then applied, a wear-resis...
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WO/2009/149942A1 |
A piston ring (6) which is arranged with radial and axial play in an associated piston ring groove (5) in a piston (1) of a reciprocating internal combustion engine can be stabilized to prevent tilting on and contact with the radially ou...
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WO/2009/121443A1 |
The invention relates to a structured chrome solid particle layer, having a crack network wherein solid particles are embedded, wherein the crack density is 10 – 250/mm, the grain size of the solid particles is in the range of 0.01 –...
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WO/2009/121719A2 |
A piston ring with a DLC coating comprises an adhesive layer on a base material from inside to outside, an amorphous metallic hydrocarbon layer and an amorphous non-metallic hydrocarbon layer, wherein primarily sp2 bonds predominate in t...
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WO/2009/119388A1 |
A piston ring material is provided which retains excellent mechanical properties and processability, which are required of piston ring materials, and has wearing resistance and scuffing resistance, which are sliding properties required o...
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WO/2009/104031A2 |
The invention is a split sealing ring structure for pistons, which is placed in the groove of a piston, and includes a flexible steel internal ring as well as at least one external ring of soft iron material, and the internal ring meets ...
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WO/2009/097667A1 |
A two-piece oil control piston ring is described, having a ring core (2) and an expander element (3) positioned with a gap in an annular cavity (4) laterally provided in an engine piston (5), the cavity (4) having at least a first intern...
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