公开(公告)号：EP2254723A1

公开(公告)日：2010-12-01

申请号：EP09713945.5

申请日：2009-01-30

申请人： KS Kolbenschmidt GMBH

发明人： JANSSEN, Michael, Albert ,  LUZ, Gerhard ,  GNIESMER, Volker ,  STORK, Steffen ,  WEISSERT, Martin

IPC分类号： B23K20/12

CPC分类号： B23K20/12 ,  B23K2201/003

摘要： The invention relates to a method for producing a piston (1) of an internal combustion engine, designed as a one-piece cooling channel piston. The piston (1) comprises an upper part (2) and a lower part (3) supported by corresponding circumferential joining bosses (11, 12) together forming a joining zone (4). In order to produce a bonded joint of the upper part (2) and the lower part (3), the joining bosses (11, 12) are connected by means of multiorbital friction welding in the region of a rotationally symmetrical or rotationally asymmetrical joining zone (4).

公开(公告)号：EP1809885B1

公开(公告)日：2010-11-10

申请号：EP05803580.9

申请日：2005-09-29

申请人： KS Kolbenschmidt GmbH

发明人： GNIESMER, Volker ,  LUZ, Gerhard ,  MÜLLER, Jochen ,  SCHALLER, Christian ,  SCHMITZ, Ernst, Peter ,  KOLBE, Peter ,  DAMBACHER, Josef

IPC分类号： F02F3/00 ,  F02F3/22

CPC分类号： F02F3/003 ,  B23K20/129 ,  B23K31/02 ,  B23K2201/003 ,  F01P3/10 ,  F02F3/20 ,  F02F3/22 ,  F02F2003/0061 ,  F02F2200/04 ,  Y10T29/49249

摘要： The invention relates to a cooling channel piston (1) for an internal combustion engine, comprising a piston bottom (2) and a piston shaft (3) that is joined thereto by means of a friction welding process, the piston bottom (2) and the piston shaft (3) jointly forming a cooling channel (8). According to the invention, an annular wall (13) which radially delimits the cooling channel (8) towards the outside is formed by the piston bottom (2) and/or the piston shaft (3). Said annular wall (13) can be sealed using a welding process once the piston bottom (2) and the piston shaft (3) have been joined together.

公开(公告)号：EP1926902A1

公开(公告)日：2008-06-04

申请号：EP05784012.6

申请日：2005-09-17

申请人： KS Kolbenschmidt GmbH

发明人： GNIESMER, Volker ,  LUZ, Gerhard ,  OTTLICZKY, Emmerich

IPC分类号： F02F3/00

CPC分类号： F02F3/003 ,  F02F3/22

摘要： The invention relates to a piston, especially a cooling channel piston (1) of an internal combustion engine, having an upper part (2) and a lower part (3). These parts can be produced separately from each other and subsequently be assembled. The upper part (2) comprises at least three radially peripheral joining webs (11, 13, 15) and the lower part (3) likewise at least three radially peripheral joining webs (12, 14). During assembly, these webs are put together and connect the upper part (2) firmly to the lower part (3).