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WO/2020/017192A1 |
In a method for manufacturing an internal-combustion engine piston according to the present invention, a functional layer is formed on a piston crown surface by carrying out: a first state functional layer installation step (S14) of inst...
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WO/2020/018573A1 |
A piston assembly includes a piston head for reciprocating back and forth within a cylinder of an engine, an upper rod coupled to the piston head at one longitudinal end of the upper rod and fixed relative to the piston head, and a lower...
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WO/2020/011767A1 |
The invention relates to a piston (10) for an internal combustion engine, which piston has a groove (16) for an oil control ring and a recess (18) between the groove (16) and at least one skirt wall (20) and is characterized in that the ...
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WO/2019/230938A1 |
The present invention provides a steel piston which is applicable even in high-temperature usage environments where the surface temperature thereof reaches 400°C or higher. An upper member 10 of a steel piston 1 according to one embodim...
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WO/2019/231053A1 |
The present invention relates to an ice cream extrusion apparatus. The present invention comprises: a piston connector for connecting a lower end of a lifting rod and the center portion of a piston of a drive actuator; and an elastic lif...
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WO/2019/225729A1 |
This variable compression device (A) can change the compression ratio of an engine (1) and is provided with: a piston rod (6); a pump (8a) which increases the pressure of an operating fluid; a cross-head pin (7a) having formed therein a ...
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WO/2019/226061A1 |
The present invention relates to an internal combustion engine, especially two- stroke engine, powered by an air-fuel mixture. The engine comprises means for forcing a resultant motion of the piston (2) comprising simultaneous reciprocat...
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WO/2019/214835A1 |
The invention relates to a piston-cylinder system, in particular for an actuator unit or brake system, comprising a cylinder (7) having a cylinder bore having an internal diameter (d4) and a piston (5) axially mounted therein so as to be...
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WO/2019/193437A1 |
A piston (1) comprising a first portion (10) suitable for coupling with an actuator member (53) and a second portion (20) made of ceramic material suitable for sliding in a cylinder (51). The first portion (10) and the second portion (20...
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WO/2019/187273A1 |
The present invention provides an internal combustion engine piston and a manufacturing method for an internal combustion engine piston which can secure durability and an adhesion property with a base material and achieve a low heat cond...
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WO/2019/191751A1 |
A pin including recesses extending longitudinally between opposite ends, and a piston assembly including the pin, for a two-stroke engine, is provided. The recesses preferably have a radius of curvature less than a radius of curvature of...
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WO/2019/181163A1 |
This piston (1) for internal combustion engines has, on the outer peripheral side of a first skirt section (31): a first lubrication groove formation section (41) having a plurality of first grooves (410); and second lubrication groove f...
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WO/2019/177659A1 |
A motion conversion apparatus (400, 500) comprises at least one set including a rodrack assembly (110) between two gearshaft member end sections (155), and a gearshaft member mid section (156) between the two gearshaft member end section...
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WO/2019/170589A1 |
The invention relates to a piston for an internal combustion engine, the piston having box walls (18), which are each formed between skirt walls (12) and gudgeon pin bosses (10), characterised in that at least one box wall (18) on a thru...
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WO/2019/153955A1 |
An elastic piston and a high-pressure pumping system. The elastic piston comprises a piston body (1), the rear end portion of the piston body (1) protruding radially outward to form a protrusion (2), the maximum diameter of the protrusio...
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WO/2019/154908A1 |
The invention relates to a piston (10) for an internal combustion engine having at least one piston ring groove, the depth (T) of which measured toward the piston axis varies over the circumference, at least one through-hole being formed...
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WO/2019/156276A1 |
The present invention relates to an ice cream extrusion device and allows an ice cream distribution container to be seated conveniently without interfering with a piston, by having a holder which has seated from above a holding-frame int...
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WO/2019/156886A1 |
A plunger and cylinder assembly usable in the fluid end of a reciprocating pump. The assembly comprises a traveling cylinder, a stationary plunger, and an optional sleeve secured to the traveling cylinder in a detachable manner. The trav...
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WO/2019/132031A1 |
Disclosed is a variable compression device comprising a piston rod (6), a fluid chamber formation member (7a) that forms a portion of a fluid chamber (R3) that causes the piston rod to move in a direction in which the compression ratio i...
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WO/2019/108852A1 |
A brake master cylinder comprising a housing having an inner surface defining a bore, and a piston movable in the bore along a piston axis. The piston includes two spaced apart lands defining the radially outermost surfaces capable of co...
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WO/2019/096609A1 |
The invention relates to a piston (1) having a first center bore (2) and a second center bore (3) for accommodating a piston pin (4). It is essential to the invention for the two center bores (2, 3) to have different diameters and for an...
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WO/2019/094138A1 |
A plunger configured as described herein provides geometry optimizations to minimize friction magnitude and variability during use by maintaining low deformation under large extrusion forces. More specifically, plunger embodiments descri...
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WO/2019/083021A1 |
This engine system (100) has: variable compression devices (6, 7 and 8) having a fluid chamber (R3) in which a piston rod (6) connected to a piston (4) is moved in a compression ratio-increasing direction by a supply of pressurized worki...
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WO/2019/084320A1 |
Disclosed herein are embodiments of an aging heat treatment that can be used to replace conventional aging steps when making alloy embodiments of the present disclosure. Embodiments of the disclosed aging heat treatment reduce cost and c...
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WO/2019/074620A1 |
An apparatus and a method include a piston in a cylinder bore for an internal combustion engine. The piston has an outer cylindrical surface with a first annular groove adjacent a second annular groove. The first annular groove is adjace...
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WO/2019/072623A1 |
The invention relates to a cold worked steel brake piston (1) for a motor vehicle partially lined disc brake, having a thin-walled construction as a pot which is open on one side, comprising a bottom (2) and a wall (3), with a groove (6)...
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WO/2019/058960A1 |
This piston for an internal combustion engine has a piston head, a pair of piston skirts, and a pair of side walls. Each of the side walls has a pin boss having a piston pin hole therein and is located between the pair of piston skirts. ...
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WO/2019/059109A1 |
The present invention provides a piston that is capable of achieving characteristics in accordance with the performance desired for each portion of the piston. The piston includes an aluminum alloy. The piston has a piston head section, ...
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WO/2019/052905A1 |
The invention relates to an imide polymer-based solid film lubricant, a method for producing same, a sliding element comprising same and the use thereof. According to the method, difunctional or cyclized difunctional compounds and option...
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WO/2019/049161A2 |
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WO/2019/049738A1 |
This piston is provided with a piston body and a film. The film has a film body and a film thickness measurement recess. The film thickness measurement recess is opened toward a combustion chamber, and has a bottom section, an opening ed...
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WO/2019/048750A1 |
The hydraulic piston (1) forms a hydraulic chamber (5) with a cylinder (4) and has a cylindrical body (6) that receives sealing means (16) and the cylindrical external surface (13) of which is housed with a little play in the cylinder (4...
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WO/2019/048179A1 |
The invention relates to a piston-cylinder unit comprising a piston rod (5) on which there is at least one piston (9) which has a radially elastic piston ring (33) on an outer lateral surface (37) and which passes into a cylinder (11) de...
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WO/2019/034293A1 |
The invention relates to a piston ring set comprising three piston rings, an upper compression ring (4) having a low butt play and good sealing, a central oil wiper ring (6) and a lower compression ring (8), likewise having low butt play...
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WO/2019/032894A1 |
A ringset (220, 230) is configured to be arranged on a piston (226) for sealing a gas in a high-pressure region of a cylinder (260) in the absence of oil or other liquid lubricant. The ringset includes one or more rings made from a high-...
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WO/2019/032904A1 |
A sealing ring (200) includes a first sealing element (220) having a first mating surface and a second sealing element (230) having a second mating surface. A high-pressure boundary (250) extends across at least a portion of the first se...
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WO/2019/032919A1 |
The present disclosure provides a sealing ring assembly (402) with one or more piston-integrated gap cover features, configured to seal a high-pressure region from a relatively lower pressure region of a piston (410) and cylinder device....
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WO/2019/013287A1 |
This internal combustion engine piston comprises: a steel first member; and an aluminum alloy second member that is bonded to the first member via an annular bonding layer. The bonding layer is 1.0–20.0 μm thick on both the inner circ...
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WO/2019/008265A1 |
The present invention relates to a shaft (10) designed to be coupled to a bearing (4), notably within a mechanical system (1) with which a combustion engine is equipped, being subjected to average contact pressures of less than 200 MPa. ...
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WO/2019/008266A1 |
The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 M...
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WO/2019/002570A1 |
The present invention relates to a cooling device (8) comprising: - a housing (22); - a crank (28) rotationally movable relative to the housing (22); - a piston (16); - a coupling component (34) rotationally mounted on the crank (28), th...
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WO/2018/224769A1 |
The invention relates to a hydraulic piston (1) which constitutes a hydraulic chamber (5) with a cylinder (4) and has a cylindrical body (6) connected - on the side of said chamber (5) - by a valve stop-link (3) to a valve for holding a ...
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WO/2018/221638A1 |
A combustion chamber structure for engines, comprising: a piston crown surface, a combustion chamber ceiling surface formed in a cylinder head; and a spark plug attached to the combustion chamber ceiling surface and having an ignition se...
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WO/2018/221639A1 |
A combustion chamber structure for engines, comprising a piston crown surface, a cylinder wall surface, a combustion chamber ceiling surface, and a spark plug having an ignition section and igniting at a timing at which the piston is at ...
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WO/2018/221306A1 |
A combustion chamber structure for engines, comprising: a piston crown surface; a combustion chamber ceiling surface formed in a cylinder head; an injector and a spark plug that are provided in the combustion chamber ceiling surface; and...
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WO/2018/216503A1 |
Provided is a piston for an internal combustion engine, the piston being configured so that the amount of deformation of the piston head can be reduced. This piston for an internal combustion engine is provided with: a piston head; a pai...
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WO/2018/213768A1 |
A setting tool that sets a packer or bridge plug in a wellbore using an improved piston rod design.
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WO/2018/198786A1 |
The objective of the present invention is to provide a novel internal-combustion engine piston with which it is possible to achieve both an improvement in thermal efficiency and a reduction in harmful components of exhaust gas, and with ...
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WO/2018/198898A1 |
The objective of the present invention is to provide a piston which is suitable for stable production, and which is provided with a heat insulating layer having good heat insulation properties, thermal responsiveness and adhesion propert...
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WO/2018/199024A1 |
Provided is an internal-combustion engine piston having a porous structure with which both adhesion to a base material and durability can be maintained, and with which low thermal conductivity and low volumetric specific heat can be achi...
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