EP 2788607 A1 20141015 - PISTON FOR INTERNAL COMBUSTION ENGINES
Title (en)
PISTON FOR INTERNAL COMBUSTION ENGINES
Title (de)
KOLBEN FÜR BRENNKRAFTMASCHINEN
Title (fr)
PISTON DE MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- DE 102011088066 A 20111209
- EP 2012071885 W 20121106
Abstract (en)
[origin: WO2013083342A1] The invention relates to a piston of an internal combustion engine, which piston forms a single-piece piston (1a) according to the production thereof and comprises a piston upper part (2a) and a piston lower part (3a) which are supported via corresponding joining webs (4a, 5a; 6a, 7a), in each case forming a joining zone (8a, 9a), and are connected in a material-to-material manner by means of a multi-orbital rotary friction weld. Here, the joining webs (4a, 5a) and (6a, 7a) which are in each case directly connected have a wall thickness S1, S2 which is identical as far as possible. The piston (1a) encloses a combustion-chamber recess (15a) and at least one cooling duct (18a) which are made centrally or eccentrically in the piston (1a). Here, the combustion-chamber recess (15a) and the cooling duct (18a) form a circular contour or a contour which deviates from a circular shape.
IPC 8 full level
CPC (source: EP US)
B23P 15/10 (2013.01 - US); F02F 3/003 (2013.01 - EP US); F02F 3/16 (2013.01 - US); F02F 3/22 (2013.01 - EP US); F02B 3/06 (2013.01 - US); F02F 3/00 (2013.01 - US); F02F 2003/0061 (2013.01 - EP US); F02F 2200/04 (2013.01 - US); F05C 2201/021 (2013.01 - US); F05C 2201/0448 (2013.01 - US); Y10T 29/49275 (2015.01 - EP US)
Citation (search report)
See references of WO 2013083342A1
Citation (examination)
US 2006207424 A1 20060921 - GAISER RANDALL R [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)
WO 2013083342 A1 20130613; DE 102011088066 A1 20130613; EP 2788607 A1 20141015; US 2015176522 A1 20150625; US 9518531 B2 20161213
DOCDB simple family (application)
EP 2012071885 W 20121106; DE 102011088066 A 20111209; EP 12783978 A 20121106; US 201214363494 A 20121106