Oil cooled piston

Details Oil cooled piston Oil cooled piston

1979-04-23

1981-09-01

Cohen, Irwin C.

Expansible chamber devices

Piston

With ported chamber in piston part for circulating heat...

123 4135, F01P 308

Patent

active

042865050

ABSTRACT:
PCT No. PCT/US79/00259 Sec. 371 Date Apr. 23, 1979 Sec. 102(e) Date Apr. 23, 1979 PCT Filed Apr. 23, 1979 PCT Pub. No. WO80/02308 PCT Pub. Date Oct. 30, 1980
Substantial heat is generated at the crown portion (18) of a piston (10). Cooling fluid has been directed to cavities (46) in the underside of the crown (18). However, at critical points of the piston cycle, the fluid drains from the cavities due to the forces of gravity. An oil cooled piston (10) is provided which includes a fluid trap (50) adjacent the crown (18). Some of the cooling fluid is trapped as it drains and is retained to enhance cooling of the crown (18). The fluid trap (50) includes a slot (60) permitting a jet spray of lubricating oil to be directed past the trap (50) to the cavities adjacent the underside of the crown (18).

REFERENCES:
patent: 1430928 (1922-10-01), Spencer
patent: 3009749 (1961-11-01), Cornet
patent: 3104922 (1963-09-01), Baster
patent: 3190273 (1965-06-01), Bachle et al.
patent: 3259028 (1966-07-01), Hutto
patent: 3336844 (1967-08-01), Cornet
patent: 3452649 (1969-07-01), Cornet
patent: 3987709 (1976-10-01), Day
patent: 4056044 (1977-11-01), Kamman et al.
patent: 4129108 (1978-12-01), Elsbett et al.
patent: 4175502 (1979-11-01), Moebus

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