EP 1504182 B1 20071226 - COOLED PISTON FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
COOLED PISTON FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
GEKÜHLTER KOLBEN FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
PISTON REFROIDI POUR MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 0301534 W 20030513
- DE 10221561 A 20020515
Abstract (en)
[origin: WO03098022A1] The invention relates to a cooled piston (1) for an internal combustion engine comprising a cooling duct (2). This cooling duct encircles in an annular manner inside the piston head at the height of the ring part and is closed at its end, which is open toward the piston skirt, by means of a spring part (8). Said spring part is correspondingly shaped, is radially divided at least once on the periphery thereof, and provided with a cooling oil inlet (5). The aim of the invention is to achieve an improved location-dependent removal of heat from the particularly hot portions of the piston (1). To this end, an encircling oil guiding ring (3) is placed inside the cooling duct (2) and, from the cooling oil inlet (5) to the cooling oil outlet (6), symmetrically divides the cooling duct (2) on the periphery thereof into sections (4) of different cooling duct volumes.
IPC 8 full level
F02F 3/20 (2006.01); F01P 3/10 (2006.01); F02F 3/00 (2006.01); F02F 3/22 (2006.01); F16J 1/09 (2006.01)
CPC (source: EP KR US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 03098022 A1 20031127; AT E382119 T1 20080115; BR 0309971 A 20050301; BR 0309971 B1 20131224; DE 10221561 A1 20040108; DE 50308885 D1 20080207; EP 1504182 A1 20050209; EP 1504182 B1 20071226; ES 2298528 T3 20080516; JP 2005534840 A 20051117; JP 4230449 B2 20090225; KR 100999229 B1 20101207; KR 20040106542 A 20041217; US 2005211088 A1 20050929; US 7131418 B2 20061107
DOCDB simple family (application)
DE 0301534 W 20030513; AT 03735298 T 20030513; BR 0309971 A 20030513; DE 10221561 A 20020515; DE 50308885 T 20030513; EP 03735298 A 20030513; ES 03735298 T 20030513; JP 2004505520 A 20030513; KR 20047018342 A 20030513; US 51426704 A 20041112