Oil pan arrangement for four cycle outboard motor

Details Oil pan arrangement for four cycle outboard motor Oil pan arrangement for four cycle outboard motor

1998-03-30

2000-10-03

Basinger, Sherman

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

123196W, 440 89, B63H 2138

Patent

active

061264997

ABSTRACT:
A four cycle outboard motor that have water cooled engines and an oil pan that is formed in the upper portion of the drive shaft housing. An exhaust pipe collects exhaust gases from an exhaust guide and delivers to a cavity that is formed in the oil pan by an interior wall thereof. The exhaust pipe does not terminate below the lower surface of the oil pan and idle exhaust gases are delivered to the area between the exterior of the exhaust pipe and the interior surface of the oil pan that defines the cavity. These idle exhaust gases are discharged to the atmosphere through and above the water exhaust gas discharge. The oil pan lower surface has a drain opening that is aligned with a vertical drain opening in the drive shaft housing.

REFERENCES:
patent: 4498875 (1985-02-01), Watanabe
patent: 5934960 (1999-08-01), Katayama et al.
patent: 7315291 (1995-12-01), Mashita et al.

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