Federal-mogul Nurnberg Gmbh

Christoffer Schmoll

Rainer Weiss

Ralf Meske

Michael Scherer

Harald Mergler

Michael Seiffert

Georg Hopp

Michael Kraemer

Kilian Röck

Mark Day

Florian Sigel

Ulrich Henzold

Lukas Merz

Kilian RÖCK

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 method for producing a piston blank or a piston for an internal combustion engine, includes providing a thickened portion formed in at least one box wall in the direction of thickness approximately in the center thereof, which is at least partly flush with a cooling channel. A resulting piston blank or piston having these features can be made in a casting mold or forging die designed in a corresponding manner.

Method for producing a piston for an internal combustion engine, piston for an internal combustion engine, piston blank for producing the piston, and casting mold or forging die for producing a piston blank

A piston for an internal combustion engine has box walls (), which are each formed between skirt walls () and gudgeon pin bosses (). At least one of the box walls () on a thrust side at least on the lower edge and at least on the inner side, starting from the gudgeon pin boss (), in a first portion (), runs largely straight and is inclined outwards, and then runs curved inwards, and then, in a second portion (), runs largely straight and inclined inwards to the skirt wall ().

Piston for an internal combustion engine

A steel piston () for an internal combustion engine has a cooling channel and shaft surfaces () with which the piston (), in the installed state, abuts a cylinder bore or a cylinder liner on a pressure side and a counterpressure side, wherein one shaft surface () has a width which is 25-50% smaller than the other shaft surface ().

Steel piston for an internal combustion engine

Growing community of inventors

Nuremberg, Germany

Christoffer Schmoll