Marine propulsion device with improved exhaust discharge

Details Marine propulsion device with improved exhaust discharge Marine propulsion device with improved exhaust discharge

1988-08-04

1989-10-03

Basinger, Sherman D.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

416 93A, B63H 2132

Patent

active

048713341

ABSTRACT:
A marine propulsion device (1) includes a drive housing (6) to which is attached a suitable engine (4), the exhaust of which is pumped downwardly through a suitable passage (20) in the drive housing to adjacent a torpedo housing (7) carrying at least one propeller (9,10). A generally horizontal antiventilation plate (8) is disposed above the torpedo housing, and a strut (22) extends between the plate and the torpedo housing, just forwardly of the upper portion of the propeller. Substantially all of the engine exhaust is forced by the engine from the drive housing passage for discharge into the path of the upper portion of the propeller. In one embodiment, substantially all of the exhaust passes through the strut and is discharged rearwardly therefrom into ventilating engagement with the forward face of the propeller. In another embodiment, a portion of the exhaust (31) is also discharged downwardly through the antiventilation plate onto the upper edge portion of the propeller.

REFERENCES:
patent: 1073920 (1913-09-01), Miller
patent: 2989022 (1961-06-01), Lundquist
patent: 3368420 (1968-02-01), Alexander, Jr.
patent: 3434447 (1969-03-01), Christensen et al.
patent: 3745964 (1973-07-01), Henrich
patent: 4645463 (1987-02-01), Arneson

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