EP 2890884 A1 20150708 - 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 102012014193 A 20120718
- DE 2013000405 W 20130718
Abstract (en)
[origin: WO2014012532A1] The present invention relates to a piston (10, 110, 210, 310) for an internal combustion engine having a piston head (13) and a piston skirt (14), the piston (10, 110, 210, 310) comprising a piston base (11, 111, 211, 311) and a piston ring element (12, 112, 212, 312), the piston head (13) having a combustion recess (21, 121, 221). The invention is characterized in that the piston ring element (12, 112, 212, 312) has a portion (19b) of a piston crown, a circumferential fire land (22) and a circumferential ring section (23) with ring grooves, in that the piston base (11, 111, 211, 311) and the piston ring element (12, 112, 212, 312) form a circumferential cooling channel (24, 124, 224, 324) that extends between an inner lateral surface (25, 125, 225) in the region of the combustion recess (21, 121, 221) and an outer lateral surface (26, 126, 226, 326) in the region of the ring section (23), in that in the cooling channel (24, 124, 224, 324) on the outer lateral surface (26, 226) at least one flow guide element (31, 331) and/or on the inner lateral surface (125, 225) at least one heat conducting element (132, 232) is provided; and in that the piston base (11, 111, 211, 311) and the piston ring element (12, 112, 212, 312) have a circumferential seam (28) in the region of the piston crown (19a, 19b), via which they are non-detachably connected to one another.
IPC 8 full level
F02F 3/22 (2006.01); F02B 23/06 (2006.01); F02F 3/00 (2006.01)
CPC (source: CN EP US)
F02B 23/0672 (2013.01 - CN EP US); F02F 3/0015 (2013.01 - US); F02F 3/22 (2013.01 - CN EP US); F02F 2003/0061 (2013.01 - CN EP US); Y02T 10/12 (2013.01 - EP US)
Citation (search report)
See references of WO 2014012532A1
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)
WO 2014012532 A1 20140123; BR 112015001027 A2 20170627; CN 104541044 A 20150422; DE 102012014193 A1 20140515; EP 2890884 A1 20150708; JP 2015522138 A 20150803; US 2015184613 A1 20150702
DOCDB simple family (application)
DE 2013000405 W 20130718; BR 112015001027 A 20130718; CN 201380038372 A 20130718; DE 102012014193 A 20120718; EP 13753266 A 20130718; JP 2015521978 A 20130718; US 201314415243 A 20130718