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WO/2021/220576A1 |
Provided is a valve stem seal capable of suppressing the valve stem seal 11 from being separated from a valve stem guide 61 even when a large port pressure is applied to the valve stem seal 11. The valve stem seal 11 comprises: an inne...
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WO/2021/213575A1 |
A rocker arm (33) of a valve train for an internal combustion engine with an arm body (34) of U-shaped cross section which consists of sheet metal has two parallel side walls (35, 36) and a base web (37) which connects the side walls (35...
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WO/2021/199190A1 |
This method is for manufacturing an engine poppet valve having an umbrella part and a shaft part integrated via a neck part the diameter of which increases toward the tip. The method comprises: an umbrella part manufacturing step for for...
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WO/2021/184045A1 |
A reed valve includes a first valve body portion that includes one or more inlet apertures fluidly coupled to a tapered second valve body portion that includes one or more outlet apertures. The reed valve includes at least one sealing su...
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WO/2021/180315A1 |
Invention relates to a method of configuring a gas exchange valve assembly (10) in an internal combustion piston engine comprising providing a gas exchange valve (16), providing a valve seat (18), arranging an abrasive wearing overlay (2...
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WO/2021/126476A1 |
An engine valve (100, 200, 300) includes a stem (102), a head (104) comprising an outer lip surface (106), a seating surface (108) extending from the outer lip surface (106) toward the stem (102), and a combustion surface (110) extending...
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WO/2021/118802A1 |
An engine head assembly (18) includes a valve seat insert (38) having a valve seating surface (44) defining a center axis, and each of an inner peripheral surface (52) and an outer peripheral surface (56) extending circumferentially arou...
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WO/2021/104688A1 |
The present invention relates to a method for shaping a hollow valve preform by means of a tension rod (20) having a texturing head (22), which is inserted into the cavity (56) of a shaft portion (44) of a valve preform, the texturing he...
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WO/2021/091841A1 |
A valve seat insert (38, 138) of an engine (10) has a valve seating surface (59, 159) including an outer curved segment (62, 162) forming a first wear crown (64, 164) for contacting the valve (24, 25) at an early wear state, an inner cur...
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WO/2021/034479A1 |
A valve seat insert (38, 138) of an engine (10) has a valve seating surface (59, 159) including an outer curved segment (62, 162) forming a first wear crown (64, 164) for contacting the valve (24, 25) at an early wear state, an inner cur...
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WO/2021/026750A1 |
Disclosed are a porous valve guide and a processing process thereof. The processing process comprises the following steps: mixing an iron powder and a carbon powder according to a set iron-carbon mass ratio to obtain a mixed powder A, an...
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WO/2020/156915A9 |
A method for introducing combustion air into a cylinder (25) of an internal combustion engine, a high-pressure inlet valve (1) provided therefor and an internal combustion engine that operates using the method and the high-pressure inlet...
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WO/2020/241152A1 |
[Problem] A valve stem seal is provided which can effectively prevent a valve guide from falling out. [Solution] This valve stem seal 1 is provided with a metal ring 10 having a tube part 11 and attached to the outer peripheral surface 2...
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WO/2020/235603A1 |
The purpose of the present invention is to provide an engine valve and a method for manufacturing the same, the engine valve in which: deburring and the like are unnecessary; the strength of a joining part is high; and deterioration of a...
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WO/2020/227779A1 |
A valve control assembly for a reciprocating engine, the valve control assembly comprising a rotating drive member, the rotating drive member including at least a pair of profile portions, wherein each of the pair of profile portions is ...
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WO/2020/230557A1 |
Provided is a valve stem seal which is highly durable and can be easily manufactured. This valve stem seal has: a reinforcement ring (2) that is disposed around a valve stem (31); an elastic body (3) that is provided with a seal lip (16a...
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WO/2020/219273A1 |
A valve seat insert (38) for a gas exchange valve (24) controlling gas exchange of a cylinder (16) includes an insert body (50) having an inner peripheral surface (56), an outer peripheral surface (58), and a valve seating surface (40) s...
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WO/2020/217978A1 |
This method for machining a cylinder head for a multicylinder engine comprises the steps of: securing a cylinder head to a securing jig of a machining device in a vertical orientation in which a plurality of recesses are vertically align...
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WO/2020/212117A1 |
The invention relates to a gas intake device (1) for a cylinder of an internal combustion engine. The present gas intake device (1) comprises an intake duct (5), an intake valve (4), a calibration part (6) for the intake valve (4), means...
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WO/2020/207586A1 |
The invention relates to a poppet valve (2) which has improved sliding characteristics, comprising a valve head (4), a valve shaft 6, and a valve shaft end. A sliding surface SL is extending along said valve shaft 6 between said valve he...
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WO/2020/205941A1 |
Poppet valve for an internal combustion engine including a valve stem and a single circular valve head attached at one end of the valve stem. The valve head has a circular peripheral contour and an arcuate edge without any sharp elements...
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WO/2020/182370A1 |
The invention relates to a method for producing a valve body of a hollow valve. Said method comprises the following steps: providing a preform having a valve body/valve plate and a tubular shaped wall which surrounds a hollow chamber; an...
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WO/2020/182387A1 |
The invention relates to a method for producing a valve body of a hollow valve. Said method comprises the following steps: providing a workpiece, blank or semi-finished product, spin extruding the workpiece to produce a preform which com...
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WO/2020/185337A1 |
A valve seat insert (38) for a gas exchange valve such as an intake valve (24) controlling gas exchange of a cylinder (16) includes an insert body (40) having an inner peripheral surface (52), an outer peripheral surface (56), and a valv...
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WO/2020/182365A1 |
The invention relates to a method for producing a valve body for a hollow valve. Said method comprises the following steps: providing a workpiece, blank or semi-finished product and a forming punch, introducing a protective layer between...
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WO/2020/173587A1 |
The present invention relates to an internally cooled valve (2), having a valve body (4) which comprises a valve stem (6) and a valve head (8), wherein a cavity (10) in the valve body (4) extends from the valve stem (6) into the valve he...
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WO/2020/164762A1 |
The invention relates to an embossing tool (4) for embossing a structure in an inside of a pipe, comprising at least three embossing stamps (6) and a wedge (20), wherein each of the at least three embossing stamps (6) has an outer, in th...
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WO/2020/161684A1 |
Hot air engine comprising - at least one compression cylinder (1) connected to a delivery manifold and an inlet manifold for the input and output from the cylinder (1) of an operating fluid, - at least one expansion cylinder (2) connecte...
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WO/2020/158479A1 |
Provided is a valve stem seal with which a valve stem guide is easily mounted to a reinforcing ring, and the axial length of the reinforcing ring can be shortened while enabling the reinforcing ring to be stably secured to the valve stem...
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WO/2020/154139A1 |
A gas exchange valve (36) in an internal combustion engine (10) includes a valve head (52) having a sealing face (58) structured to contact a valve seat (24) and defining a face angle. The valve head (52) further includes an under-head f...
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WO/2020/141810A1 |
The present invention relates to a nitrided surface structure of a high-power and high-temperature engine valve stem, and a surface nitriding method and, more specifically, to: a nitrided surface structure of a high-power and high-temper...
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WO/2020/142671A1 |
A powder metal material and sintered component formed of the powder metal material is provided. The powder metal material comprises a plurality of particles including copper in an amount of 10 wt. % to 50 wt. %, based on the total weight...
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WO/2020/105273A1 |
A cooling structure according to an embodiment of the present invention is used for an exhaust valve box having therein: an exhaust passage for discharging exhaust gas from the combustion chamber of a marine diesel engine; and a valve ro...
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WO/2020/101938A1 |
An internal combustion engine (10) includes a valve seat insert (38) within an engine housing (12), and a gas exchange valve (24). The valve seat insert (38) has a compound valve seat (40) with a valve recession-resistive profile formed ...
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WO/2020/102139A1 |
A valve seat insert (38) for a gas exchange valve (24) controlling gas exchange of a cylinder (16) includes an insert body (40) having an inner peripheral surface (52), an outer peripheral surface (56), and a valve seating surface (59) s...
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WO/2020/100185A1 |
Provided is a method for manufacturing an engine poppet valve with which various types of manufacturing can be performed at low cost. This method for manufacturing an engine poppet valve (21) comprises: a forging step for forming a metal...
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WO/2020/083808A1 |
The invention relates to a gas exchange valve (1) comprising a valve stem (3) and a valve disk (2). A nickel-phosphorus-boron carbide layer (4) is disposed in at least some areas on the valve stem (3) of the gas exchange valve (1).
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WO/2020/059003A1 |
When forming a valve sheet film in openings (16a1-16a8) of intake ports (16) provided in a cylinder block attachment surface (12a) of a cylinder head rough material (3), a nozzle of a cold spray device moves along an intake nozzle moveme...
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WO/2020/059002A1 |
A cold spray device (2) uses a first particle material supply unit (23) to supply, to a cold spray nozzle (25), a first particle material having a high degree of hardness, from the side further upstream than a throat section (252b), and ...
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WO/2020/052818A1 |
The invention relates to a method for producing a cavity valve. The method comprises: providing a valve body, which has a cavity in the interior, the valve body having, on a bottom side, a circular opening having an opening edge surface;...
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WO/2020/054276A1 |
Provided is an intake valve of an internal combustion engine, comprising an intake valve body 31 that is slidably supported by a valve guide 15 and that is provided with an umbrella part 33 at one end of a shaft part 32, with a periphera...
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WO/2020/026628A1 |
This sliding member is provided with a substrate and a coating layer formed on the substrate. The coating layer comprises a particle aggregate containing precipitation hardening-type copper alloy particles, and said precipitation hardeni...
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WO/2019/213622A9 |
A valve and seat set has a seal coupled to the valve body, the seal surface comprising irregularities to allow pressure to propagate in-between the mating surfaces when pressure from the inside of the valve is equal to, or greater than, ...
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WO/2020/017003A1 |
A sliding member according to the present invention comprises a coating upon a substrate. The coating includes hard metal particles, and corrosion-resistant metal particles having a hardness lower than that of the hard metal particles....
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WO/2020/003462A1 |
A cylinder head rough material (3) having a shielding curtain portion (16g) projecting in an annular shape from an annular edge portion of an opening portion (16a) of an intake port (16) or an opening portion (17a) of an exhaust port (17...
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WO/2019/236960A1 |
This disclosure provides a valve seat having cladded surfaces of high hardness in order to improve the service life of valve seats. The cladded surfaces may include various materials of favorable mechanical properties for mitigating fail...
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WO/2019/223908A1 |
Disclosed is a production method for a valve body of a hollow valve, said method comprising: providing a preform with a valve plate and a tubular wall, which surrounds a hollow chamber; and roller spinning the tubular wall by means of a ...
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WO/2019/223941A1 |
The invention relates to a production method for a valve body of a hollow valve with optimised shaft inner geometry, said method comprising the following steps: providing a preform (6) with a valve plate (12) and with a tubular wall (14)...
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WO/2019/226528A1 |
Aspects of the disclosure relate methods and apparatus to allow fluid flow into and out of a pressure vessel or fluid conduit. More specifically, aspects of the disclosure relate to a control valve sealing system and method of use, where...
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WO/2019/220892A1 |
A coil spring according to the present invention comprises a first seat winding section having a first seat surface facing one side in the axial direction, a second seat winding section having a second seat surface facing the other side ...
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