Lubricating oil supplying structure of an engine

Details Lubricating oil supplying structure of an engine Lubricating oil supplying structure of an engine

2005-07-12

2005-07-12

Dolinar, Andrew M. (Department: 3747)

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

C123S1960CP

Reexamination Certificate

active

06915770

ABSTRACT:
An engine has a through hole and a fitting hole on a lower portion of a crankcase, an oil container under the crankcase, a conduit inserted in the fitting hole, and a check valve disposed over a lower end of the through hole; lubricating oil is contained in the container; the check valve will seal the through hole when subjected to an upward force, and will open when subjected to a downward force; thus, the lubricating oil can be drawn into the crankcase via the conduit during a return stroke of the piston, and oil in the crankcase will flow back into the container via the through hole during a forward stroke of the piston; the amount of the lubricating oil in the container is such that that hot lubricating oil that has just flown back into the container can be cooled down in the container before it is drawn out again.

REFERENCES:
patent: 821915 (1906-05-01), Altham
patent: 2983334 (1961-05-01), Dalrymple
patent: 5072699 (1991-12-01), Pien
patent: 6769391 (2004-08-01), Lee et al.
patent: 2003/0233993 (2003-12-01), Radel

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