Piston coolant gallery

Details Piston coolant gallery Piston coolant gallery

2007-10-16

2007-10-16

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

Piston

With ported chamber in piston part for circulating heat...

Reexamination Certificate

active

09552391

ABSTRACT:
A cast piston, for an internal combustion engine or pump has an integral coolant ring gallery, with localized extensions, to achieve a coolant interchange with the gallery upon piston reciprocation. At least a portion of an extension lies generally parallel to the longitudinal piston axis and towards an upper end of the piston adjacent the working fluid. This provides an attendant increase in surface area exposed to coolant allowing either a decrease in operational piston temperature or an increase in allowable heat flow into the piston from a working fluid.

REFERENCES:
patent: 2882106 (1959-04-01), Meurer
patent: 5086736 (1992-02-01), Wiemann et al.
patent: 3830033 (1987-11-01), None
patent: 0 403 767 (1990-12-01), None
patent: 0 464 626 (1992-01-01), None

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