Neckarsulm, Germany
Neckarsulm, Germany

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A method for producing a piston of an internal combustion engine and to a piston produced according to the method having a piston crown with annular grooves, a combustion-chamber bowl, and piston shaft having a pin bore for receiving a pin, wherein both a combustion-chamber rim and a combustion-chamber bowl base are melted and thereafter solidified.


A method for producing a piston of an internal combustion engine and to a piston produced according to the method having a piston crown with annular grooves, a combustion-chamber bowl, and piston shaft having a pin bore for receiving a pin, wherein both a combustion-chamber rim and a combustion-chamber bowl base are melted and thereafter solidified.


A method for producing a cooling channel system for an internal combustion engine, which has a cooling channel in the piston crown. The piston crown is adjoined by a lower piston part having a piston boss, pin bores and piston skirts. Firstly, a piston blank having a peripheral collar projecting radially in the region of the piston crown is produced, wherein the collar, forming a subsequent ring zone wall is then reshaped and, in a transition area between the piston crown and the lower piston part, a contact area for the collar is formed, and the collar is reshaped in such a way until the outer radially peripheral edge comes very close to or completely into contact with the contact area in order to form a closed cooling channel. Following the reshaping, the end region of the ring zone wall forms a defined gap (X) with respect to the upper edge of the piston skirt.


Patent
Ks Kolbenschmidt Gmbh | Date: 2014-02-13

A piston in particular, a gallery cooled piston, of an internal combustion engine, includes at least one bottom part and at least one top part wherein the at least two piston parts have geometries which correspond in a connecting region in order to bring about a positively locking connection. A method for producing such a piston.


A method for processing a constructed, liquid-cooled piston of an internal combustion engine, the piston including an upper piston part and a lower piston part, which are supported by a joining plane and are connected to each other in a bonded manner. An electrochemical method, such as electrochemical machining, is used to produce a passage opening or a hole in the piston. By means of the method, material is selectively removed after the completion of the upper part piston, the lower piston part, or the piston after the two piston parts have been joined. The electrochemical machining allows an arbitrarily geometrically designed topography having at least one passage opening, a hollow, or an oil pocket in cooling areas or non-cooling areas to be created on the piston.


Patent
KS Kolbenschmidt GmbH | Date: 2014-03-14

A piston, such as a cooling channel piston, for an internal combustion engine, including at least one lower part and one upper part, a combustion chamber and at least one annular groove. The upper part or the lower part is fastened by means of at least one undercut on the lower part or on the upper part. The upper part includes at least one combustion chamber and at least one annular groove. A method for producing such a piston is disclosed.


Patent
Ks Kolbenschmidt Gmbh | Date: 2015-07-09

A cooling channel piston for an internal combustion engine which includes a piston bottom and a piston shaft that are joined thereto of a friction welding process. The piston bottom and the piston shaft jointly form a cooling channel. An annular wall which radially delimits the cooling channel towards the outside is formed by the piston bottom and/or the piston shaft. The annular wall can be sealed by a welding process once the piston bottom and the piston shaft have been joined together.


Patent
Ks Kolbenschmidt Gmbh | Date: 2014-10-13

A piston of an internal combustion engine having a piston head which has a ring zone and is adjoined by a piston skirt which encloses an inner shape, with two box walls which lie opposite one another and are set back with respect to the outer contour of the piston and with two skirt walls which are not set back with respect to the outer contour of the piston, wherein the box walls receive hubs, wherein the piston skirt has skirt supports which are connected to the hub, wherein the width of the box wall is a point of intersection between the pin axis and the constant-curvature and constant-tangent further course of the box wall, and to a method for producing a piston for internal combustion engines.


A piston, especially a steel piston for an internal combustion engine, has a piston head which forms part of a combustion chamber. At least the piston head has an oxidation protective layer. A method for producing an oxidation protection layer is disclosed.


Patent
Ks Kolbenschmidt Gmbh | Date: 2014-06-13

A piston for an internal combustion engine has a sliding shoe carried in a force accumulator. The sliding shoe has a channel to transfer cooling oil into a hollow space. The force accumulator is located is a channel formed by the piston, and the sliding shoe is guided partially inside the force accumulator.

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