EP 2569121 A1 20130320 - METHOD FOR PRODUCING AN ARBITRARY GEOMETRY ON PISTONS OF INTERNAL COMBUSTION ENGINES
Title (en)
METHOD FOR PRODUCING AN ARBITRARY GEOMETRY ON PISTONS OF INTERNAL COMBUSTION ENGINES
Title (de)
VERFAHREN ZUR ERZEUGUNG EINER BELIEBIG GESTALTETEN GEOMETRIE AN KOLBEN VON BRENNKRAFTMASCHINEN
Title (fr)
PROCÉDÉ POUR CONFÉRER À DES PISTONS DE MOTEURS À COMBUSTION INTERNE UNE GÉOMÉTRIE DE CONCEPTION QUELCONQUE
Publication
Application
Priority
- DE 102010020227 A 20100511
- EP 2011000664 W 20110212
Abstract (en)
[origin: WO2011141071A1] The invention relates to a method for processing a constructed, liquid-cooled piston (1) of an internal combustion engine, said piston comprising an upper piston part (2) and a lower piston part (7), which are supported by means of a joining plane (10) and are connected to each other in a bonded manner. An electrochemical method, electrochemical machining, is used to produce a passage opening (12) or a hole in the piston (1). By means of said method, material is selectively removed after the completion of the upper piston part (2), the lower piston part (7), or the piston (1) after the two piston components have been joined. The electrochemical machining allows an arbitrarily geometrically designed topography having at least one passage opening (12), a hollow, or an oil pocket in cooling areas or non-cooling areas to be created on the piston (1).
IPC 8 full level
CPC (source: EP US)
B23H 3/10 (2013.01 - US); B23H 9/00 (2013.01 - EP US); B23H 9/006 (2013.01 - EP US); B23H 9/14 (2013.01 - EP US); B23P 15/10 (2013.01 - US); F02F 3/003 (2013.01 - US); F02F 3/18 (2013.01 - US); Y10T 29/49275 (2015.01 - EP US); Y10T 29/49277 (2015.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010020227 A1 20111117; DE 102010020227 B4 20231026; EP 2569121 A1 20130320; US 2013062218 A1 20130314; US 2015224589 A1 20150813; WO 2011141071 A1 20111117
DOCDB simple family (application)
DE 102010020227 A 20100511; EP 11704548 A 20110212; EP 2011000664 W 20110212; US 201113697415 A 20110212; US 201514622086 A 20150213