Non-ferrous metal piston for internal combustion engine, with removable core to produce cavity, attached to cast liner outside it by means of fixing devices

摘要

The piston has a dished crown (2) with a combustion trough (3), and with a hollow cavity (4) running at least part of the way round the trough. A removable core (7) to produce the cavity, attached to at least one cast liner (6) outside it by means of fixing devices, which may be pins (8) in the region of a piston-ring groove (5).