Piston for internal combustion engines

Details Piston for internal combustion engines Piston for internal combustion engines

1988-02-24

1988-11-29

Look, Edward K.

Expansible chamber devices

With lubricating means

Piston has lubricant retaining or conducting means

92159, 92172, 92208, 92261, F16J 100

Patent

active

047872950

ABSTRACT:
Piston for internal combustion engines, with an oil scraper ring disposed in an annular groove at the circumference of its head portion. The outer edge of the annular groove adjacent to the piston skirt which adjoins the head portion is bevelled to form a chamfer. In order to ensure the maintenance of an oil film sufficient to prevent dry running of the piston, on the cylinder wall, the width of the chamfer is greater on the thrust side of the piston. The width of the chamfer may decrease essentially continuously from the counter-thrust side to the pressure side.

REFERENCES:
patent: 1664507 (1928-04-01), Hanch
patent: 1864384 (1932-06-01), Ware
patent: 2407440 (1946-09-01), Osborne

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