Light metal alloy piston

Details Light metal alloy piston Light metal alloy piston

1986-01-28

1988-03-15

Weakley, Harold W.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92229, 123193P, F02F 308

Patent

active

047305487

ABSTRACT:
A light metal alloy cast piston comprises a thermal strut provided in the shoulder portion of the piston skirt. The thermal strut is composed of a fiber reinforced metal portion containing high tensile strength fibers integrally molded in the matrix metal. The piston is shaped in such a manner that the inner periphery of the thermal strut is exposed toward the inside of the piston skirt, except for the regions at the piston pin bosses, to avoid the presence of non-reinforced metal a the inside of the thermal strut. This arrangement prevents the formation of cracks along the inner periphery of the thermal strut.

REFERENCES:
patent: 4274372 (1981-06-01), Kelm
patent: 4359973 (1982-11-01), Shimada
JP Abstract 59-201 953.
MTZ Motortechnische Zeitschrift, 43, 1982, No. 7, p. 492.

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