Expansion-controlled light alloy piston

Details Expansion-controlled light alloy piston Expansion-controlled light alloy piston

1986-03-19

1989-12-19

Garrett, Robert E.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92225, 123193P, F16J 104

Patent

active

048875198

ABSTRACT:
In expansion-controlled light alloy pistons for internal combustion engines, expansion control elements made of steel are bonded to the carrying portions of the cast skirt on the inside peripheral surface thereof and are embedded in the hubs of the piston pin bosses. To provide for an optimum expansion control action throughout the height of the piston skirt, the expansion control elements are provided on both sides of the plane of oscillation of the connecting rod with an aperture, which is open toward the end of the skirt and has a height amounting to at least 30% of the height of the expansion control elements. Said aperture has a peripheral dimension amounting to more than 10% of the piston diameter. Projections for supporting the expansion control element at its edges defining the aperture protrude into the latter.

REFERENCES:
patent: 3598022 (1968-08-01), Maier
patent: 3908521 (1975-09-01), Cockcroft
patent: 4074617 (1978-02-01), Cockcroft

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