Marine propulsion device with coolant water passages

Details Marine propulsion device with coolant water passages Marine propulsion device with coolant water passages

1992-11-10

1994-03-22

Graham, Matthew C.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

123 4101, B63H 2132

Patent

active

052958817

ABSTRACT:
Disclosed herein is a marine propulsion device comprising an internal combustion engine including an engine block having therein a water jacket and having a lower face which includes therein a recess, a drive shaft housing connected to the lower face of the engine block, a propeller shaft rotatably supported by the drive shaft housing and adapted to support a propeller, a drive shaft extending through the drive shaft housing and including an upper end driven by the engine and a lower end drivingly connected to the propeller shaft, an exhaust housing located at least partially within the drive shaft housing and including an upper face mating with the lower face of the engine block and including therein a recess located in opposed relation to the recess in the lower face, a water passage defined by the recess in the lower face of the engine block and by the recess in the upper face of the exhaust housing, which water passage has an inlet end and an outlet end spaced horizontally from the inlet end and communicating with the water jacket, and a conduit connected to the inlet end for supplying water to the inlet end.

REFERENCES:
patent: 3520270 (1970-07-01), Miller
patent: 4421490 (1983-12-01), Nakahama
patent: 4795383 (1989-01-01), Binversie et al.
patent: 4799905 (1989-01-01), Broughton et al.
patent: 4906214 (1990-03-01), Towner
patent: 4940435 (1990-07-01), Osborn et al.
patent: 4955838 (1990-09-01), Wenstadt

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