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WO/2006/061695A1 |
The disclosure relates to surface roughening methods in which a cutting tool having a radial cutting blade with first and second cutting edges is fed along a longitudinal axis of an article while rotating the cutting tool about the axis....
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WO/2006/059790A1 |
Dimples (10) are provided in an overlap section (W) in which a piston ring (8) of the outer peripheral upper end of a piston and an oil ring (9) of the outer peripheral lower end of the piston overlap each other by reciprocating motion o...
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WO/2006/003019A1 |
The invention relates to a sealing system for sealing a cylinder head (2) against a cylinder sleeve (1) of a single- or multi-cylinder internal combustion engine, notably a four-stroke diesel engine, with a divided cast iron crankcase co...
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WO/2005/121403A1 |
The invention relates to a structural gliding component that is coated with chromium nitride and metallic chromium. The inventive structural gliding component is characterized in that the coating is composed of a plurality of individual ...
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WO/2005/071293A1 |
A sleeve element (22) having at least one end region (21) configured to be biased into a laterally adjacent recess (26) formed in one of the piston element surface (27) and the bore surface (41) is disclosed. A seal assembly is disclosed...
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WO/2005/065867A1 |
A cylinder liner for insert casting and a method for manufacturing the cylinder liner are provided. The cylinder liner and the method are applied to cylinder blocks and improve the adherence and the bonding strength with a cylinder block...
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WO/2005/033575A1 |
[PROBLEMS] To provide a system for maximizing an interval for overhauling an engine by minimizing the wear of a two object friction system due to abrasion, particularly by minimizing the wear of the internal combustion engine between the...
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WO/2004/113773A1 |
A sliding seal arrangement in particular for a valve having an anodised aluminium coating in contact with the seal. The coating is produced so that inclusions in the surface of the coating are substantially aligned. The direction of moti...
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WO/2004/109083A1 |
The invention relates to a gas seal between a coolant jacketed cylinder liner (12) and a cylinder head (11) in an internal combustion engine functioning with high combustion pressures. The cylinder head has a circular groove (17), which ...
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WO/2004/092621A1 |
A hydrodynamic face seal (100) for sealing between the cylinder head (300) and rotating sleeve (200) of a rotating liner engine. The face of the face seal provides a sealing zone (130) for maintaining a lubricant layer of about 2 microme...
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WO/2004/079177A1 |
A reciprocating engine (1) has a piston ring (5), a piston ring (7), and a gas passage (15). The piston ring (7) forms an annular gas chamber (6) between itself and the piston ring (5) and is adjacent to the piston ring (5) such that a p...
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WO/2004/031583A1 |
A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall, and comprising a piston in said chamber to be sealingly movable relative to said chamber wall at least between a first longitudinal po...
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WO/2004/026501A2 |
A variable diameter cylinder made from a sheet having first and second edges that are opposite to each other and that slideably connect with each other to form a helical joint of a cylinder such that sliding the edges of the sheet along ...
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WO/2004/025106A1 |
The invention relates to a cylinder liner (2) for a cylinder crankcase. Said cylinder liner has a contouring (6) at one end. The contouring (6) serves to support the liner (2) on a sleeve (4) inside a diecasting tool. When the liner (2) ...
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WO/2004/022960A1 |
A cylinder for an internal combustion engine. A metallic ring (6) surrounds the top of the cylinder. An insulating ring (7) is provided at the top of the cylinder between the metallic ring and cylinder wall. The axial extent of the insul...
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WO/2003/097269A1 |
Method for manufacturing a jack or hydraulic, pneumatic and/or olepneumatic cylinder of the kind comprising a tubular cylindrical body (4) at the ends thereof a bottom (1) and a head (5) are fastened, inside thereof a piston (2) slides i...
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WO2003008845B1 |
The invention relates to a sliding surface with areas which are harder in comparison with the base material. Said surface is easy to produce and has a long surface life. The harder areas in comparison with the base material are at least ...
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WO/2003/082514A1 |
The invention relates to a method for fine machining a cylindrical inner surface which is provided with materials having different degrees of hardness in the axial direction. The inventive method comprises the following steps: the surfac...
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WO/2003/042548A1 |
A member of a precision friction pair of two members comprising a tubular housing and a plunger adapted to move in said housing, the two members having respective matching friction surfaces. The member has a polymer coating forming its f...
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WO/2003/010417A1 |
An axial motor (100) driven by opposed pistons/cylinder (101a-105b, 111a-115b) pairs arranged in a circular array about a central axis of the motor (100). The opposed pistons (101a, 101b; 102a, 102b; 103a, 103b; 104a, 104b; 105a, 105b) i...
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WO/2003/008815A1 |
An energetic-based piston actuator system imparts a rotational motion in the piston in a manner that increases system efficiency and reliability. A malleable ring mounted about the piston neck obturates upon initiation of the energetic c...
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WO/2003/000447A2 |
The aim of the invention is to produce a light-alloy bearing bush with a rough external surface. To achieve this, particles, which are subsequently surrounded in part by the molten metal, are applied to the surface of the casting mould. ...
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WO/2002/099319A2 |
The invention relates to sliding pairings for machine parts that are subjected to the action of highly pressurized and high-temperature steam, preferably for piston-cylinder assemblies of steam engines. The sliding pairings consist of a ...
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WO/2002/077457A1 |
A piston-chamber combination comprising an elongate chamber which is bounded by an inner chamber wall and comprising an elastically deformable piston comprising a container in said chamber to be sealingly movable relative to said chamber...
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WO/2002/072907A1 |
The invention relates to a method and device for the production of coated bores, whereby the bore wall is plasma sprayed with a coating material after formation of the bore. According to the invention, an adequate resistance of the coati...
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WO/2002/068844A1 |
A pump liner (70) comprising a tubular sleeve (74) having an inner sleeve surface formed of a corrosion and abrasion resistant material and an outer, frustoconical sleeve surface and a shell (72) having an outer shell surface and an inne...
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WO/2002/040850A1 |
ABSTRACT A cylindrical surface (3) is roughed to be prepared for a spray film (11) to be formed thereon, by cutting therein rough undulations (21) in a threaded form, using a cut chip (20) leaving a groove part (21a) of a respective undu...
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WO/2002/010555A1 |
A steam engine cylinder block comprising a higher pressure cylinder or cylinders and a transfer conduit through which steam exhausted from the higher pressure cylinder is led to drive the lower pressure cylinder, the cylinders being stea...
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WO/2001/032948A1 |
The invention relates to the production of machine components, especially piston rings (3) and/or pistons and/or cylinder liners of engines, preferably two-stroke great diesel engines, that are provided with at least one sliding surfaces...
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WO/2001/002715A1 |
An external combustion engine (1) comprising pressure vessel means defining a tubular working chamber (3) having spaced apart first and second ends and including first wall means (11), adjacent the first end of the chamber, heated by hea...
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WO/2001/002712A1 |
A sliding member, wherein a protruded part extending in a direction crossing a sliding direction is provided on at least one of the sliding surfaces of sliding members slid with each other, and fine dimples are provided in the surfaces o...
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WO/2000/049200A1 |
The invention relates to a method and a device for producing wear-resistant tribological cylinder running surfaces (16) for pistons running in the cylinders (20) of a crankcase of an internal combustion engine, comprising a laser (10) an...
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WO/2000/040849A1 |
The invention relates to a reciprocating piston engine with at least one cylinder whose cylinder liner (2) is provided with at least one groove-shaped oil pocket (8) in the area of the running surface (4) of said liner (2), whereby the r...
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WO/2000/040850A1 |
The invention relates to a reciprocating piston engine comprising at least one cylinder whose cylinder liner (2) is provided with at least one groove (9) which forms an oil pocket (8) and which is situated in the area of the running surf...
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WO/2000/025012A1 |
A carbon piston engine having a lower side (112) that forms a domed surface, preferably an ellipsoid surface, in the area between the enlargements of the hub (151) irrespective of the design of the lower side of the piston head, whereby ...
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WO/1999/058839A1 |
The invention relates to a guide arrangement, especially for a piston-cylinder arrangement, comprising a cylinder (3) in which a bearing section of a piston (2) can be displaced axially along its inner bore (5) configured as a piston bea...
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WO/1999/046521A1 |
The invention concerns a method for making a metal cylinder sleeve (6) to be used in an internal combustion engine cylinder block, said cylinder sleeve (6) internal surface having a surface structure. In order to produce said cylinder sl...
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WO/1999/014518A1 |
A cylinder liner for diesel or Otto internal combustion engines is made of an AlSi type aluminium alloy, with 12 to 40 % Si, for example, the size range of the particles of Si or intermetallic phases lying from 1 to 20 $g(m)m. The cylind...
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WO/1999/004140A1 |
A volumetric-displacement-maximizing device includes a molded slider (12) bidirectionally movable within an elongate cavity (14) formed within a molded body (16). The body (16) also includes a port structure (18) with an output port (18a...
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WO/1998/053192A1 |
A cylinder liner (1) for an internal combustion engine of the diesel type has at least one inwardly open oil groove with external supply of lubricating oil and at least a first and a second group of inwardly open recesses, each group hav...
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WO/1998/025017A1 |
A cylinder element for an internal combustion engine of the diesel type, the maximum combustion pressure of which at full load exceeds 100 bar, includes two layers of Al-bronze sprayed-on on top of each other, the outer layer of which be...
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WO/1997/050108A1 |
The invention relates to an aluminium cast part with a honed, cylindrical internal sliding surface which has a surface roughness profile of Rk = 0.5 - 3.0 'mu'm, Rnk = 0.1 -2.0 'mu'm, Rnk = 0.5 -5.0 'mu'm. A hard material layer with a su...
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WO/1997/042406A1 |
A cylinder liner (1) for an internal combustion engine has a piston (5) which is movable in the liner in the longitudinal direction between a bottom dead centre at which scavenging air ports (8) in the wall of the cylinder liner are expo...
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WO/1997/029287A1 |
The invention relates to a screw-on pressure medium-actuated working cylinder with closure components for coupling the cylinder tube. The aim of the invention is to develop a screw-on pressure medium-operated working cylinder which remai...
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WO/1996/030159A1 |
A cylinder liner (1) for a piston engine, such as a large two-stroke crosshead engine, has a running surface for the piston rings on the inner surface (7) of the liner. The cylinder liner has an internal diameter in the interval from 25 ...
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WO/1995/026070A1 |
An improved mechanical transducer of the type having a body (14) reciprocating in a chamber (3), the body being linked to a housing by a linkage (15) including an axially compliant spring. An anti-friction fluid bearing applies a lateral...
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WO/1995/021994A1 |
A cylinder liner (1) for an internal combustion engine is spray-coated on its cylindrical inner surface with a hard wearing layer (7), and after the spraying and a possible trueing of this hard wearing layer, the inner surface is coated ...
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WO/1995/021690A1 |
A high-pressure and a method for high-pressure treatment of substances. The high-pressure press comprises a high-pressure cylinder consisting of a number of concentrically arranged cylinder elements (1, 2, 3). The cylinder elements (1, 2...
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WO/1995/002025A1 |
A solid film lubricant system for protecting metal wear interfaces subject to high temperatures and wet lubrications, comprising an oil-attracting solid lubricant mixture (A) with at least two elements (A1, A2, A3) selected from the grou...
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WO/1994/011612A1 |
In a process for the pressure-resistant plastic coating of cylinder surfaces in piston-cylinder units, at least the cylindrical surfaces against which a piston ring is to be applied are to be coated after coarse pre-machining with an ade...
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