EP 2864618 A2 20150429 - 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 102012008945 A 20120505
- DE 2013000239 W 20130503
Abstract (en)
[origin: WO2013167103A2] The invention relates to a piston (10,) for an internal combustion engine, comprising a piston head (11) and a piston skirt (16), said piston head (11) having a peripheral annular part (15) and in the region of said annular part (15), a peripheral cooling channel (23). The piston skirt (16) comprises piston bores (17) provided with hub bores (18), which are arranged over the hub connections (19) on the underside (11a) of the piston head (11). Said piston hubs (17) are interconnected over the running surfaces (21, 22). According to the invention, the wall (23a) of the cooling channel (23) which extends in the region of the annular part (15) comprises an inclined portion and together with the central axis of the piston (M), forms an acute angle (a). At least one bore (24a, 24b, 24c, 24d) which is closed towards the outside is arranged between a running surface (21, 22) and a hub bore (18) such that the at least one bore (24a, 24b, 24c, 24d) leads into the cooling channel (23), and that the cooling channel (23) and the at least one bore (24a, 24b, 24c, 24d) contain a coolant (27) in the form of a metal or a metal alloy which have a low-melting point.
IPC 8 full level
F02F 3/18 (2006.01)
CPC (source: CN EP US)
F01P 3/10 (2013.01 - US); F02F 3/18 (2013.01 - CN EP US); F02F 3/20 (2013.01 - US); F02F 3/26 (2013.01 - US); F02B 3/06 (2013.01 - US); F02F 3/00 (2013.01 - US); F02F 3/22 (2013.01 - US); F05C 2201/021 (2013.01 - US); F05C 2201/0448 (2013.01 - US)
Citation (search report)
See references of WO 2013167103A2
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102012008945 A1 20131107; BR 112014027523 A2 20170627; CN 104379917 A 20150225; CN 104379917 B 20170714; EP 2864618 A2 20150429; EP 2864618 B1 20170104; JP 2015516050 A 20150604; JP 6293121 B2 20180314; KR 20150006860 A 20150119; US 2015128892 A1 20150514; US 9494106 B2 20161115; WO 2013167103 A2 20131114; WO 2013167103 A3 20140213
DOCDB simple family (application)
DE 102012008945 A 20120505; BR 112014027523 A 20130503; CN 201380033008 A 20130503; DE 2013000239 W 20130503; EP 13745565 A 20130503; JP 2015510640 A 20130503; KR 20147032776 A 20130503; US 201314398784 A 20130503