Federal-mogul Nurnberg Gmbh

Tennecoinc.

Rainer Weiss

Klaus Lades

Isabella Sobota

Philipp Koch

Roman Morgenstern

Robert Willard

Martin Popp

Scott Kenningley

Laszlo Pelsoeczy

Ross Allen Evers

Ralf Meske

Christoffer Schmoll

Sven Ungermann

Michael Scherer

Michael Seiffert

Georg Hopp

Stephan Silvio

Silvio Stephan

Mark Day

Florian Sigel

Christian Lindner

Michael Grabinger

Jens Lehmann

A piston for an internal combustion engine includes at least one annular groove in the piston material, preferably the first annular groove closest to the piston crown, which is configured such that, when viewed in cross-section, at least one elliptic curve and/or convex cubic spline is present between a lower flank of the annular groove and an upper flank of the annular groove.

Piston for an internal combustion engine

A cast piston for an internal combustion engine is made of an iron-based material and has windows in at least one side wall carrying a piston pin boss. The windows are asymmetric relative to one another on the side of the skirt walls.

Cast piston for an internal combustion engine, consisting of an iron-based material

A diesel engine piston is cast in one piece and consists of almost fully pearlitic cast iron with spheroidal graphite as the piston material. Such a piston is used for 'light vehicle' diesel engines, 'heavy duty' diesel engines and &#x201c;large bore&#x201d; diesel engines.

Piston for internal combustion engines, and use of a piston for internal combustion engines

The invention relates to a method for producing an engine component, in particular a piston for an internal combustion engine, wherein an aluminum alloy is cast in the gravity die casting process and wherein the aluminum alloy has 7 to &#x3c;14.5 wt % silicon, &#x3e;1.2 to &#x2264;4 wt % nickel, &#x3e;3.7 to &#x3c;10 wt % copper, &#x3c;1 wt % cobalt, 0.1 to 1.5 wt % magnesium, 0.1 to &#x2264;0.7 wt % iron, 0.1 to &#x2264;0.7 wt % manganese, &#x3e;0.1 to &#x3c;0.5 wt % zirconium, &#x2265;0.1 to &#x2264;0.3 wt % vanadium, 0.05 to 0.5 wt % titanium, and 0.004 to &#x2264;0.05 wt % phosphorus as alloying elements and aluminum and unavoidable contaminants as the remainder. The aluminum alloy can optionally comprise beryllium, wherein the calcium content is limited to a low level. The invention further relates to an engine component, in particular a piston for an internal combustion engine, wherein the engine component is composed at least partially of an aluminum alloy, and to the use of an aluminum alloy to produce an engine component, in particular a piston of an internal combustion engine.

Method for producing an engine component, engine component, and use of an aluminum alloy

A piston including at least one insert disposed between an inner surface of a ring belt and undercrown surface, and/or between the inner surface of the ring belt and a pin boss, to provide reinforcement to the ring belt is provided. The insert reduces thermal and mechanical distortion of the ring belt, and thus increases the piston ring performance, reduces blow-by, and ultimately improves engine emissions. The insert is formed by an additive machining process, such as direct depositing, laser cladding, laser sintering, arc welding, additive welding, plasma transferred arc spraying, plasma welding, arc welding, selective laser sintering, and high velocity oxygen fuel spraying, plasma spraying. According to one embodiment, an intermediate piece is mechanically attached to the piston, and the insert is applied to the intermediate piece, to provide additional reinforcement.

Piston ring-belt structural reinforcement via additive machining

A method for producing an engine component, more particularly a piston for an internal combustion engine, in which an aluminum alloy is cast using the gravity die casting method is provided. The aluminum alloy comprises: 9 to &#x2264;10.5% by weight silicon, &#x3e;2.0 to &#x3c;3.5% by weight nickel, &#x3e;3.7 to 5.2% by weight copper, &#x3c;1% by weight cobalt, 0.5 to 1.5% by weight magnesium, 0.1 to 0.7% by weight iron, 0.1 to 0.4% by weight manganese, &#x3e;0.1 to &#x3c;0.2% by weight zirconium, &#x3e;0.1 to &#x3c;0.2% by weight vanadium, 0.05 to &#x3c;0.2% by weight titanium, 0.004 to 0.008% by weight phosphorus, with aluminum and unavoidable impurities constituting the rest. An engine component, in particular a piston, wherein the engine component consists, at least partially, of the aluminum alloy, and the use of an aluminum alloy to produce the engine component, is also provided.

Method for producing an engine component, engine component, and use of an aluminium alloy

A method is described for producing an engine component, more particularly a piston for an internal combustion engine, in which an aluminium alloy is cast using the gravity die casting method and wherein the aluminium alloy comprises the following alloy elements: 9 to &#x2264;10.5% by weight silicon, &#x3e;2.0 to &#x3c;3.5% by weight nickel, &#x3e;3.7 to 5.2% by weight copper, &#x3c;1% by weight cobalt, 0.5 to 1.5% by weight magnesium, 0.1 to 0.7% by weight iron, 0.1 to 0.4% by weight manganese, &#x3e;0.1 to &#x3c;0.2% by weight zirconium, &#x3e;0.1 to &#x3c;0.2% by weight vanadium, 0.05 to &#x3c;0.2% by weight titanium, 0.004 to 0.008% by weight phosphorus, wherein said aluminium alloy further comprises aluminium and unavoidable impurities. The invention further describes an engine component, in particular a piston for an internal combustion engine, wherein the engine component consists, at least partially, of an aluminium alloy, and the use of an aluminium alloy to produce an engine component, more particularly a piston of an internal combination engine.

Growing community of inventors

Nuremberg, Germany

Rainer Weiss