EP 2038078 A1 20090325 - COOLING CHANNEL PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR THE PRODUCTION THEREOF
Title (en)
COOLING CHANNEL PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR THE PRODUCTION THEREOF
Title (de)
KÜHLKANALKOLBEN FÜR EINE BRENNKRAFTMASCHINE UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
PISTON À CANAL DE REFROIDISSEMENT POUR UN MOTEUR À COMBUSTION INTERNE ET PROCÉDÉ DE FABRICATION DUDIT PISTON
Publication
Application
Priority
- EP 2007005456 W 20070621
- DE 102006031892 A 20060707
- DE 102007013183 A 20070320
Abstract (en)
[origin: WO2008003401A1] The invention relates to a method for producing a one-piece, lightweight piston (1) consisting of steel and having a small compression depth (S), said piston having at least one cavity (17) in a shaft aperture region (16). A piston blank is produced in a first step using a forging or casting method. To form a cooling channel (7) between an annular region (5) and a combustion chamber recess (3) an annular section (10) is formed in one piece onto the wall (8) of a cooling channel (7) in the vicinity of the piston base (11). The joint (12) produced between the annular section (10) and an outer wall (9) of the cooling channel (7) is sealed by welding.
IPC 8 full level
B21K 1/18 (2006.01)
CPC (source: EP US)
B21K 1/18 (2013.01 - EP US); B21K 1/185 (2013.01 - EP US); B23P 15/10 (2013.01 - EP US); F02F 3/22 (2013.01 - EP US); Y10T 29/49249 (2015.01 - EP US)
Citation (search report)
See references of WO 2008003401A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008003401 A1 20080110; DE 102007013183 A1 20080117; EP 2038078 A1 20090325; US 2009241769 A1 20091001; US 8485088 B2 20130716
DOCDB simple family (application)
EP 2007005456 W 20070621; DE 102007013183 A 20070320; EP 07726101 A 20070621; US 30766307 A 20070621