Abstract: A piston for an internal combustion device, has at least one cooling channel, with at least two sections which, when seen from above, are located along the piston axis and/or on different levels in the radial direction, and/or the two or more cooling channels are provided, and at least two of the cooling channels are located on different levels along the piston axis and/or in the radial direction when seen from above, and that at least a supply and/or discharge element extends in an least parallel manner on the piston axis.

Abstract: The invention relates to a piston for an internal combustion device, comprising at least one cooling channel, characterized by the fact that the cooling channel comprises at least two sections which, when seen from above, are located along the piston axis and/or on different levels in the radial direction, and/or the two or more cooling channels are provided, and at least two of said cooling channels are located on different levels along the piston axis and/or in the radial direction when seen from above, and that at least a supply and/or discharge element extends in an least parallel manner on the piston axis.

Abstract: The invention relates to a piston for an internal combustion engine, which consists of a copper alloy. According to the method for producing such a piston, said piston is produced from a copper alloy. According to the invention, a copper alloy is used in the production of a piston for an internal combustion engine.

Abstract: A piston for diesel engines is made of a toughness-increasing aluminium alloy containing copper, nickel, silicon, magnesium, iron and manganese. The use of this material, which can conventionally be chill-cast, and by implying special dimensions, provides a piston which, despite its relatively light construction, provides the utmost security against cracking in the stressed regions, e.g. the piston boss or the combustion chamber recess.

Abstract: Piston for internal combustion engines, with an oil scraper ring disposed in an annular groove at the circumference of its head portion. The outer edge of the annular groove adjacent to the piston skirt which adjoins the head portion is bevelled to form a chamfer. In order to ensure the maintenance of an oil film sufficient to prevent dry running of the piston, on the cylinder wall, the width of the chamfer is greater on the thrust side of the piston. The width of the chamfer may decrease essentially continuously from the counter-thrust side to the pressure side.