Piston for alternative endothermic engines creating oil cushion

Details Piston for alternative endothermic engines creating oil cushion Piston for alternative endothermic engines creating oil cushion

1988-07-13

1990-02-27

Michalsky, Gerald A.

Expansible chamber devices

With lubricating means

Piston has lubricant retaining or conducting means

123193P, F02F 300

Patent

active

049035800

ABSTRACT:
An improvement of pistons for alternative, endothermic four-cycle engines, in which notches or grooves are cut on opposite sides of the oval surface of the piston skirt and arranged in a parallel fashion with respect to the piston pin. The grooves create concavities which are closed off frontally by the cylinder wall and laterally by the piston skirt. The purpose of the grooves is to create a series of pockets for the lubricating oil, which is under pressure during engine operation, and to improve lubrication in the areas of maximum piston stress.

REFERENCES:
patent: 1760122 (1930-05-01), Drevitson
patent: 2381065 (1945-08-01), Lieberherr

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