Reciprocating engine with a variable compression ratio...

Details Reciprocating engine with a variable compression ratio... Reciprocating engine with a variable compression ratio...

2005-07-26

2005-07-26

Kamen, Noah P. (Department: 3747)

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

C123S0780AA, C123S1960CP

Reexamination Certificate

active

06920847

ABSTRACT:
A reciprocating engine with a variable compression ratio mechanism is disclosed. A lubrication system of the engine is improved by controlling an oil pressure according to a compression ratio setting. The lubrication system includes various combinations of control valves and oil passages. The oil relief passage is opened at a high compression ratio setting applied to a low engine load range and is otherwise closed at a low compression ratio setting applied to a high engine load range.

REFERENCES:
patent: 4195601 (1980-04-01), Crise
patent: 5247911 (1993-09-01), Nenicka
patent: 6397796 (2002-06-01), Styron et al.
patent: 6505582 (2003-01-01), Moteki et al.
patent: 6736091 (2004-05-01), Tibbles
patent: 1 170 482 (2002-01-01), None
patent: 1 178 194 (2002-02-01), None
patent: 2002-21592 (2002-01-01), None

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