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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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WO/2009/092300A1 |
A multi-seal n-type sealing arrangement is comprised of a seal member (5) and an n-type sealing ring (1,2). The seal member (5) are provided with at least one mounting groove (4) of the sealing ring and a through hole (9) for connecting ...
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WO/2009/088741A1 |
A piston ring (100) is disclosed that includes a radially extending upper surface (110), a radially extending lower surface (102), a radially innermost surface (114) extending between the upper surface and the lower surface, and a radial...
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WO/2009/069703A1 |
This aims to provide a cylinder structure capable of reliably reducing, if a piston ring having linear expansion characteristics to follow the linear expansion of a cylinder liner made of an aluminum alloy is used, the damage due to the ...
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WO/2009/068125A1 |
The invention relates to a piston (1) of an internal combustion engine made of steel guided in a cylinder jacket (2), said piston comprising a piston top (6) and a piston shaft. A piston base (7) transitions on the circumference into a f...
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WO/2009/069762A1 |
A steel product having a composition which contains by mass C: 0.01 to 1.9%, Si: 0.01 to 1.9%, Mn: 5.0 to 24.0% with balance consisting of Fe and unavoidable impurities and a steel product described above which further contains Cr: 18.0%...
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WO/2009/065205A2 |
The invention relates to general mechanical engineering, in particular to sealing, ans can be used for sealing pistons in piston machine cylinders. The aim of said invention is to improve technical characteristics of piston machines. The...
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WO/2009/062486A1 |
The invention proposes a process for hardening groove flanks of the annular groove (11) of a steel piston (5) by means of a laser beam (3), wherein oxygen-containing process gas is initially directed at a groove flank (10) of the steel p...
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WO/2009/060879A1 |
Disclosed is a slide structure which can ensure to suppress the abrasion of an amorphous carbon film caused by a chemical reaction between the amorphous carbon film and an organic molybdenum compound. Specifically disclosed is a slide st...
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WO/2009/043227A1 |
A sealing oil ring includes a base ring (2) with an opening, the outer peripheral surface of the base ring (2) is provided with an annular flange (1) projecting radially outwards, wherein an outer radial joint part (11) and an outer axia...
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WO/2009/043537A1 |
The invention relates to a method for reinforcing at least one annular groove of a piston for an internal combustion engine. In said method, after producing a piston blank, a heterogeneous structure is homogenized using a refusion proces...
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WO/2009/033115A2 |
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 adjus...
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WO/2009/021494A1 |
The present invention relates to a hard chrome layer, which is formed substantially by electrodeposition from an electrolyte containing a hexavalent chrome and which has fissures in which particles of hard material are intercalated. Acco...
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WO/2009/016051A1 |
In order to avoid burn traces on piston rings, the invention proposes providing the piston ring with a wear-resistant layer which consists of a material having a thermal conductivity of at least 180 W/(m K). At least 5% by volume of the ...
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WO/2009/012862A1 |
The invention relates to a pneumatic component with a cylinder (12), a piston (14) running in the cylinder and a grooved ring (16), which seals the piston (14) from the cylinder (12) and has a static side (Sstat) and a dynamic side (Sdyn...
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WO/2009/006650A1 |
The invention relates to a piston having two skirt walls (3, 4) which are situated opposite one another and between which is placed at least one pin bearing (5, 6) which is supported on the piston head (2), with each skirt wall (3, 4) ex...
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WO/2009/000245A1 |
The invention relates to a piston ring (10, 20) for a piston of an internal combustion engine, comprising a ring body (11, 21), with joint ends (15, 16; 25, 26) forming a piston ring joint (14, 24) and a ring running surface (12, 22) def...
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WO/2009/002014A1 |
A sealing apparatus for a square piston used for compressing and feeding a fluid is applied to equipment used for compressing or feeding the fluid on the basis of a new concept, and maintains a perfectly sealed state to thus guarantee st...
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WO/2008/154934A1 |
The present invention relates to a piston ring for an internal combustion engine, the piston ring comprises a sulphide rich compound layer forming a surface layer, said sulphide rich compound layer comprising an iron nitride matrix with ...
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WO/2008/152104A1 |
Disclosed is a piston ring comprising a supporting material and a wear-resistant coating. The wear-resistant coating is composed of a ternary system A-B-N which is applied using a PVD process and in which A and B each represent an elemen...
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WO/2008/151619A1 |
The invention relates to a piston ring (1) for the piston of an internal combustion engine, comprising a circular, radially inner bezel (2), the width thereof reducing, on both sides of the ring stop (3), up to the side (4) of the piston...
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WO/2008/153041A1 |
Provided is a wire rod for an I-type oil ring, which includes right and left rail portions and a web portion connecting the rail portions, which has an oil hole or a molten through hole formed in the web portion, and which has a circumsc...
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WO/2008/151589A1 |
The invention relates to an oil wiper ring, comprising a base body having a radially outer running surface, an inner peripheral surface, and an upper and a lower flank, the ring having at least two running surface webs, which, if necessa...
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WO/2008/151873A1 |
Disclosed is an engine part, e.g. an engine piston or a piece thereof, such as a ring carrier or piston boss bushing, which is made of a cast iron alloy containing a minimum of 0.01 percent and a maximum of 0.1 percent of zirconium as an...
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WO/2008/145546A1 |
The present invention relates to a sealing ring (1), particularly a shaft sealing ring for a turbocharger, interrupted in the circumferential direction, the interruption (2) being produced by means of laser machining and/or by means of a...
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WO/2008/126866A1 |
A sealing device in which a good lubricating oil film is formed along the entire circumference of a sliding surface. The sealing device (1) is fitted in an annular groove formed in either of two elements that are a housing having a shaft...
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WO/2008/122259A1 |
The invention relates to a piston (10, 110) for an internal combustion engine comprising a piston head (11, 111) with a piston crown (12, 112), a continuous fire land (13, 113) and a continuous ring part (14, 114) comprising annular groo...
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WO/2008/098547A1 |
A piston ring, having a base body, which comprises a substantially circumferential running surface, an upper and a lower flank surface, and an inner circumferential surface, wherein the transitional region of the running surface is provi...
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WO/2008/098544A1 |
A piston ring (1) having a base body (2), which comprises a running surface (3) provided with at least one chamber (7), an upper (4) and a lower flank surface (5), and an inner circumferential surface (6), wherein the running surface is ...
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WO/2008/098534A1 |
The invention relates to a piston ring, having a base body, which comprises a running surface (2) provided with a chamber (6,6'), an upper (3) and a lower (4) flank surface, and an inner circumferential surface (5), wherein at least the ...
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WO/2008/098548A1 |
A piston ring, having a base body, which comprises a running surface, an upper and a lower flank surface, and an inner circumferential surface, wherein at least one of the flank surfaces is provided with at least one PVD cover layer such...
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WO/2008/098546A1 |
A piston ring, having a base body, which comprises a substantially circumferential running surface, which has an upper and a lower flank surface, an inner circumferential surface, and a butt opening provided with defined butt clearance, ...
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WO/2008/087375A1 |
A piston for an internal combustion engine includes a piston crown (2) and a cylindrical side wall (4), an annular piston ring groove (8) being formed in the side wall (4) which accommodates an annular spring (14). The spring (14) includ...
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WO/2008/087043A1 |
The invention relates to a housing, in particular to a housing of a mill for milling or for mill-drying organic raw substances such as mineral coal or brown coal. The housing separates an interior space from an exterior space, with a sha...
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WO/2008/083793A1 |
The present invention relates to a piston ring with improved running-in and wear properties and to a method for the production thereof. According to a first embodiment, the piston ring comprises a torus(2), a layer of coupling agent (4) ...
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WO/2008/086394A1 |
A piston formed from an Al alloy, such as an Al-Si alloy, has wear resistant coating applied to a predetermined portion of the outer surface. The predetermined portion of the outer surface preferably includes the piston skirt. The coatin...
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WO/2008/086392A1 |
A piston formed from an Al-Si alloy having an average Si composition includes a high wear region having a surface that is Si-rich with respect to the average Si composition of the Al-Si alloy. The surface of the predetermined high wear r...
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WO/2008/068613A1 |
The present invention relates to a piston ring (10), particularly a compression ring, for an internal combustion engine, comprising a ring-shaped body (11) having a ring joint (13) formed by butt ends (14a, 14b), said ring-shaped body (1...
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WO/2008/062863A1 |
Disclosed is a piston ring which is fitted into a ring groove of an aluminum alloy piston and enables to prevent aluminum adhesion over a long time. A resin coating film containing 0.5-20% by volume of a carbon black particle and 3-30% b...
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WO/2008/047454A1 |
In a reciprocating engine, at the beginning of a combustion and expansion stroke while the engine is operated, a gas pressure (38) above a piston (2) is introduced into an annular gas chamber (31) through a recess (34), and the piston (2...
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WO/2008/040695A2 |
The invention relates to a piston ring (1) which is produced from a carrier material (3), especially steel or a cast material. The piston ring has a wear-resistant coating (4) from a periodic multilayer system (10), every periodicity (11...
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WO/2008/040694A2 |
The invention relates to a piston ring (1) which is produced from a carrier material (3), especially steel or a cast material. The piston ring has a wear-resistant coating (4) from a periodic multilayer system (10), every periodicity (11...
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WO/2008/033162A2 |
A pressure gradient rotary sealing system is described with an additional configuration which uses and externally mounted pressure-reducing piston with a differential area to create a pressure differential across the system to reduce the...
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WO/2008/019716A1 |
The invention relates to a steel material, in particular for producing piston rings. In addition to iron and production-related impurites, said steel material contains 0.6 to 1.2 wt.% carbon, 12 to 20 wt.% chromium, 0.0 to 10.0 wt.% niob...
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WO/2008/017195A1 |
A completely sealed piston ring without end clearance and a piston with said ring are disclosed, the perimeter of the external diameter of the piston ring is longer than that of the internal diameter of the cylinder, the dimension (T) ex...
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WO/2008/016009A1 |
Disclosed is a piston ring which can vary a tension under low-temperature and low-load conditions and a tension under high-temperature and high-load conditions, and therefore can minimize the friction loss and improve the fuel efficiency...
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WO/2008/016010A1 |
Disclosed is a piston ring which can vary a tension under low-temperature and low-load conditions and a tension under high-temperature and high-load conditions, and therefore can minimize the friction loss and improve the fuel efficiency...
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WO/2008/013281A1 |
Provided is a seal ring which can be used as an inner circumference seal and an outer circumference seal. The seal ring is arranged in an annular space between a shaft and a housing. A cut section (7) is arranged at one area in the circu...
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WO/2008/010490A1 |
A cycloid reciprocating engine providing a working engine employing a sufficiently practical linear crank mechanism by general improvements including employment of a multi-cylinder and contrivance of its cylinder layout, contrivance of i...
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WO/2008/000206A1 |
An oil scraper ring, formed by a steel strip ring having substantially plane-parallel faces (2, 3) in addition to, in an initial state, a convex outer (5) and a convex inner circumferential surface (4), wherein the outer circumferential ...
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