Lubrication and crankcase ventilating system for four-cycle outb

Details Lubrication and crankcase ventilating system for four-cycle outb Lubrication and crankcase ventilating system for four-cycle outb

1996-07-31

1998-05-19

Sotelo, Jesus D.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

440900, 123195HC, B63H 2110

Patent

active

057528667

ABSTRACT:
An outboard motor having a high-performance V-type twin overhead cam four-cycle internal combustion engine. The oil reservoir for the engine is disposed in a driveshaft housing below the engine and an oil pump is driven off the lower end of the engine crankshaft for circulating the oil from the oil tank to the engine. The oil supply system for the engine includes a vertically extending main gallery and a drain passage which extend in parallel side-by-side relationship and which are disposed over the oil tank for ease of oil return. The exhaust and cooling system for the engine is configured so as to minimize heat transfer between the exhaust system and the lubricating system and to maintain a compact assembly. The engine has an improved oil reservoir and crankcase ventilating system.

REFERENCES:
patent: 4828519 (1989-05-01), Watanabe
patent: 5069192 (1991-12-01), Matsumoto et al.
patent: 5476402 (1995-12-01), Nakai et al.

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