Marine propulsion device with selectively operable secondary exh

Details Marine propulsion device with selectively operable secondary exh Marine propulsion device with selectively operable secondary exh

1993-06-28

1994-09-20

Avila, Stephen P.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

440 86, 440900, B63H 2100

Patent

active

053485009

ABSTRACT:
The invention provides a marine propulsion device comprising a powerhead including an internal combustion engine having an output shaft and an exhaust port, a propeller shaft adapted to hold a propeller, a selective coupler of the engine output shaft and the propeller shaft, an exhaust passage communicating with the engine exhaust port and comprising a first exhaust outlet and a second exhaust outlet, and a valve that is associated with the selective coupler to open and close the second exhaust outlet.

REFERENCES:
patent: 3552121 (1971-01-01), Kitagawa et al.
patent: 3943876 (1976-03-01), Kiekhaefer
patent: 4586908 (1986-05-01), Schlichthorst
patent: 4601666 (1986-07-01), Wood, Jr.
patent: 4773215 (1988-09-01), Winberg et al.
patent: 5022877 (1991-06-01), Harbert
patent: 5106330 (1992-04-01), Nelson et al.

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