Multi-part cast core for engine piston includes liquid-cooled part core for direct deformation of gudgeon-pin hub from inside, surrounded by other core elements

摘要

The cast core is for the piston of an internal combustion engine with a piston heat, skirt and shaft round a cast core (9) with two opposite gudgeon-pin hubs, each with a boring. The core includes a liquid-cooled part core (10) for direct deformation of the gudgeon-pin hub from the inside, which is surrounded by the other core elements.