Internal-combustion engines – Adjustable combustion chamber – Piston in head adjusted
Reexamination Certificate
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.
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Hiyoshi Ryosuke
Moteki Katsuya
Ushijima Kenshi
Yasuda Yoshiteru
Foley & Lardner LLP
Kamen Noah P.
Nissan Motor Co,. Ltd.
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