Variable compression ratio piston

Details Variable compression ratio piston Variable compression ratio piston

1997-01-16

1998-05-26

Denion, Thomas E.

Internal-combustion engines

Four-cycle

Variable clearance

92215, 92256, F02B 7504

Patent

active

057551928

ABSTRACT:
A piston for an internal combustion engine has a trunk portion and a crown portion slidably mounted above the trunk portion. The entirety of the trunk portion extends above the piston's wrist pin bore. A resilient element positioned the crown portion with respect to the trunk portion with sufficient force in a direction tending to separate the crown portion and trunk portion such that the crown portion will be placed in a position of maximum extension during at least some part of the combustion cycle.

REFERENCES:
patent: 1252269 (1918-01-01), Johnson
patent: 2170266 (1939-08-01), Leissner
patent: 2376214 (1945-05-01), Webster
patent: 2446348 (1948-08-01), Webster
patent: 3450111 (1969-06-01), Cronstedt
patent: 3934560 (1976-01-01), Dodd
patent: 4016841 (1977-04-01), Karaba et al.
patent: 4510895 (1985-04-01), Slee
patent: 5476074 (1995-12-01), Boggs et al.

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