Expansible chamber devices – Piston – With ported chamber in piston part for circulating heat...
Patent
1981-03-27
1983-03-29
Schwadron, Martin P.
Expansible chamber devices
Piston
With ported chamber in piston part for circulating heat...
92158, 92159, 92216, 123 4135, F01B 3108, F01B 3110, F16J 108, F01P 312
Patent
active
043779670
ABSTRACT:
A two-piece piston assembly comprises an upper portion or a ring carrier part that may be made of malleable iron, cast iron, or a similar iron, and a lower portion or cross-head part, referred to as a skirt, that may be made of aluminum or an alloy thereof. The assembly is configured to increase the contact of cooling liquid with the underside of the crown and eliminate problems accompanying undue heating in this area of the piston. The cocktail-shaker action of the two-piece piston assembly is employed to enhance the cooling effect. A separate cup-like device is secured around the outside of the lower end of the crown member of the piston and is thus positioned between the upper and lower portions of the piston to retain the oil and effectively deliver it to the underside of the crown.
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Development and Operating Experience of Pistons for Medium Speed Diesel Engines, Munro and Griffiths, Wellworthy Topics, No. 74, Spring/Summer 1980, pp. 4-11.
Klein Richard L.
Mack Trucks, Inc.
Schwadron Martin P.
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