Internal combustion engine with dry sump lubricating system

Details Internal combustion engine with dry sump lubricating system Internal combustion engine with dry sump lubricating system

1998-11-05

2000-02-29

McMahon, Marguerite

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02B 7700, F01M 102, F01M 1100, B63B 3500

Patent

active

060296380

ABSTRACT:
An internal combustion engine with dry sump lubricating system includes a feed pump which supplies lubricating oil from a lubricating oil tank disposed outside an engine body to all moving parts in the engine. After circulating through the engine, the lubricating oil drops down into a crank chamber and is immediately picked up from the crank chamber and sent back into the lubricating oil tank by a recovery pump. Since the lubricating oil tank is attached to an end of the engine body from which a crankshaft project, it does not increase the overall width (dimension in the direction perpendicular to the axis of the crankshaft) and height of the engine. Even when the engine has inclined cylinders, the lubricating oil tank can avail a high degree of design freedom because the end face is not influenced by inclination of the cylinders as greatly as side surfaces of the engine body. The engine also includes a breather system so designed as to prevent an operation failure of the engine which would otherwise be caused due to inflow of the lubricating oil into an intake system of the engine.

REFERENCES:
patent: 4601267 (1986-07-01), Kronich
patent: 4721090 (1988-01-01), Kato
patent: 4856486 (1989-08-01), Mori et al.

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