EP 2142323 A1 20100113 - CASTING CORE FOR FORMING A COOLING CHANNEL IN A PISTON PRODUCED BY CASTING
Title (en)
CASTING CORE FOR FORMING A COOLING CHANNEL IN A PISTON PRODUCED BY CASTING
Title (de)
GIESSKERN ZUR BILDUNG EINES KÜHLKANALS IN EINEM GIESSTECHNISCH HERGESTELLTEN KOLBEN
Title (fr)
NOYAU DE COULÉE POUR FORMER UN CANAL DE REFROIDISSEMENT DANS UN PISTON PRODUIT PAR TECHNIQUE DE FONDERIE
Publication
Application
Priority
- DE 2008000770 W 20080425
- DE 102007019930 A 20070427
- DE 102007044105 A 20070915
Abstract (en)
[origin: WO2008131754A1] The invention relates to a soluble and essentially annular casting core (2) for forming a cooling channel that transitions into two areas (14, 15) which are approximately parallel to the piston axis (16) and are facing away from the piston head (3), via a respective bending of the core (17, 18) in the shape of a quadrant, wherein the second area (14) transitions into a part of the casting core (2) that forms the feed opening (12) of the cooling channel, and the first area (15) transitions into a part of the casting core (2) that forms the discharge opening (13) of the cooling channel. The two areas (14, 15) of the casting core (2) are disposed at a distance from one another, which corresponds at a maximum to two times the cross-sectional diameter of one of the two areas (14, 15). As a result, the throughflow of the cooling oil traversing the cooling channel is accelerated and the cooling of the piston improved.
IPC 8 full level
CPC (source: EP US)
B22C 9/10 (2013.01 - EP US); B22C 9/105 (2013.01 - EP US); F02F 3/22 (2013.01 - EP US)
Citation (search report)
See references of WO 2008131754A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102007044105 A1 20081030; BR PI0810852 A2 20141029; CN 101668599 A 20100310; CN 101668599 B 20130213; EP 2142323 A1 20100113; EP 2142323 B1 20121003; JP 2010525221 A 20100722; JP 5185995 B2 20130417; US 2010163203 A1 20100701; US 8122935 B2 20120228; WO 2008131754 A1 20081106
DOCDB simple family (application)
DE 102007044105 A 20070915; BR PI0810852 A 20080425; CN 200880013921 A 20080425; DE 2008000770 W 20080425; EP 08758029 A 20080425; JP 2010504448 A 20080425; US 45110508 A 20080425