Poppet valve, plate valve, with a longitudinal axis (L), with a valve seat having a plurality of valve seat passage channels, with a catcher arranged at a distance from the valve seat in the direction of the longitudinal axis (L), and with a sealing element arranged movably between the valve seat and the catcher for opening and closing the valve seat passage channels. One of the valve components formed as the valve seat or the catcher having a plurality of passage channel limiting sections and a plurality of web portions, each extending mutually at an angle (α), wherein at least one of the valve components formed as valve seat or catcher is produced at least in sections by additive manufacturing, and wherein at least one of the passage channel limiting sections is dimensioned shorter in the direction of the longitudinal axis (L).

A method for producing a piston for an internal combustion engine may include producing a piston upper part including a piston top, at least parts of a ring section, and at least part of a cooling channel, producing a piston lower part and closing the part of the cooling channel arranged in the piston upper part via an additive method, and finish-machining the piston. Finish-machining the piston may include producing at least one annular groove in a ring support for receiving a piston ring.

A powder metal alloy composition is used in the production of a sintered powder metal insert for casting into an aluminum casting. The powder metal alloy composition includes an iron powder metal base, copper such that the copper is 3.5 weight percent or more of the powder metal alloy composition, and carbon in an amount of 0.1 to 1.0 weight percent of the powder metal alloy composition. Upon compacting and sintering the powder metal alloy composition to form the sintered powder metal insert, the sintered powder metal insert has a copper gradient that provides a higher concentration of copper on the surface of the sintered powder metal insert than in a center of the grains of the sintered powder metal insert. The higher concentration of copper at the surface of the insert enables a strong metallurgical bond to be formed with the aluminum casting during casting.

A method for the production of a cylinder head for an internal combustion engine. The production method presentes the steps of: dividing the cylinder head into a main part, where there is the flame deck making up the crown of each cylinder, and an operating part, where there are the housings of the control means of the valves; manufacturing, at first, the sole main part of the cylinder head by means of a casting process in a mould; and manufacturing, subsequently, the operating part of the cylinder head by means of additive manufacturing, which adds layer upon layer starting from the previously manufactured main part of the cylinder head.

When forming valve seat coats at opening portions (16a.sub.1 to 16a.sub.8) of intake ports (16) provided at a cylinder block mounting surface (12a) of a semimanufactured cylinder head (3), the nozzle of a cold spray apparatus moves along a nozzle movement path for air intake (Inp1) that is set between any two of the plurality of opening portions (16a.sub.1 to 16a.sub.8), while continuing to spray a raw material powder. When forming valve seat coats at opening portions (17a.sub.1 to 17a.sub.8) of exhaust ports (17), the nozzle moves along a nozzle movement path for air exhaust (Enp1) that is set between any two of the plurality of opening portions (17a.sub.1 to 17a.sub.8), while continuing to spray the raw material powder.

A cylinder head valve seat of an automobile vehicle includes a valve seat having a valve seat surface integrally joined to an engagement end. The engagement end includes multiple materials extending through a cross section of the engagement end. The multiple materials include: a first material having a first thermal conductivity; and a second material having a second thermal conductivity higher than the thermal conductivity of the first material, wherein the first material transitions into the second material.

A method of making a powder metal bearing support insert includes filling a tool and die set with a powder metal. A compact is compacted from the powder metal using the tool and die set in which the compact includes a body having a pair of opposing ends on lateral sides thereof, a bearing-receiving surface positioned on a side of the body between the pair of opposing ends in which the bearing-receiving surface is for reception of a bearing therein, and a pair of holes extending through the body wherein each of the pair of holes are formed by sets of adjacent interdigitated slots having regions that abut one another to form a connected passageway therethrough that define the respective hole. The compact is sintered to form the powder metal bearing support insert. The powder metal bearing support insert may be cast into an engine component.

A rotary valve includes a valve body defining an inlet, an outlet, and a fluid flow path connecting the inlet and the outlet, and a valve shaft is disposed in the valve body. A control element includes a first side, a second side, and defines a pivot axis. The control element operatively connected to the valve shaft, disposed in the fluid flow path, and is rotatable by the valve shaft about the pivot axis between an open position, in which the control element permits fluid flow between the inlet and the outlet, and a closed position, in which the control element limits flow between the inlet and the outlet of the valve body. A portion of the control element includes a lattice structure including a plurality of connected lattice members. The lattice structure defines one or more channels extending across the first side of the control element.

A rotary valve includes a valve body defining an inlet, an outlet, and a fluid flow path connecting the inlet and the outlet, and a valve shaft is disposed in the valve body. A control element includes a first side, a second side, and defines a pivot axis. The control element operatively connected to the valve shaft, disposed in the fluid flow path, and is rotatable by the valve shaft about the pivot axis between an open position, in which the control element permits fluid flow between the inlet and the outlet, and a closed position, in which the control element limits flow between the inlet and the outlet of the valve body. A portion of the control element includes a lattice structure including a plurality of connected lattice members. The lattice structure defines one or more channels extending across the first side of the control element.

The present disclosure provides a piston, comprising: a skirt having an upper body portion; and a crown formed on the upper body portion by an additive manufacturing process, the crown including at least one air gap formed and positioned to reduce heat transfer from combustion to at least one cooling gallery formed in the piston.