EP 2603686 A1 20130619 - PISTON FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
PISTON FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
KOLBEN FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
PISTON POUR UN MOTEUR À COMBUSTION INTERNE
Publication
Application
Priority
- DE 102010033882 A 20100810
- DE 2011001565 W 20110809
Abstract (en)
[origin: US2012037114A1] A piston for an internal combustion engine has an upper part and a lower part. The upper part has a collar with a ring rib and the lower part has a wall and a contact part radially within the wall. When the upper part is connected with the lower part by friction welding, the face surfaces of the ring rib, the collar, the wall, and the contact part form friction-welding surfaces and form a cooling channel and a cooling cavity between them. To supply the cooling channel and the cooling cavity with cooling oil, radial bores are introduced into the ring rib, which bores connect the cooling channel with the cooling cavity. In this way, it is guaranteed that a sufficient residual amount of oil collects in the cooling channel and in the cooling cavity, which amount is constantly renewed, and leads to good cooling of the piston crown.
IPC 8 full level
CPC (source: EP KR US)
F02F 3/00 (2013.01 - KR); F02F 3/003 (2013.01 - EP US); F02F 3/22 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2012019594A1
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)
US 2012037114 A1 20120216; US 8550052 B2 20131008; BR 112013003256 A2 20160614; BR 112013003256 B1 20210223; CN 103119278 A 20130522; CN 103119278 B 20160810; DE 102010033882 A1 20120216; EP 2603686 A1 20130619; EP 2603686 B1 20181017; JP 2013535617 A 20130912; KR 20140012936 A 20140204; WO 2012019594 A1 20120216
DOCDB simple family (application)
US 201113205988 A 20110809; BR 112013003256 A 20110809; CN 201180046161 A 20110809; DE 102010033882 A 20100810; DE 2011001565 W 20110809; EP 11787584 A 20110809; JP 2013523487 A 20110809; KR 20137005782 A 20110809