Piston assembly having a fusible core to form a cooling channel

Details Piston assembly having a fusible core to form a cooling channel Piston assembly having a fusible core to form a cooling channel

1990-02-21

1991-05-14

Dolinar, Andrew M.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder detail

92208, F02F 300

Patent

active

050146580

ABSTRACT:
A piston is formed with a cooling channel in its crown by dissolving a fusible core cast into the crown. The fusible core is supported prior to casting by a strut which is itself supported on a plurality of cores which help to find the piston cavity. The plurality of cores are configured so as to be removable from the strut, after casting, in a downward direction. The fusible core is dissolved by introducing a dissolving liquid to the fusible core via inlet or outlet passages cut between the cavity and the fusible core.

REFERENCES:
patent: 3991811 (1976-11-01), Diez et al.
patent: 4361181 (1982-11-01), Wischnak et al.
patent: 4506632 (1985-03-01), Kanda et al.
patent: 4586553 (1986-05-01), Allen et al.
patent: 4776075 (1988-10-01), Kawabata et al.
patent: 4891875 (1990-01-01), Sochi et al.

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