Exhaust silencer structure for outboard engines

Details Exhaust silencer structure for outboard engines Exhaust silencer structure for outboard engines

1984-07-24

1986-08-05

Blix, Trygve M.

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

440 89, B63H 2138

Patent

active

046040692

ABSTRACT:
An exhaust and exhaust cooling system for an outboard motor including an improved slow speed exhaust gas discharge including a plurality of expansion chambers and a water chamber through which exhaust gases must pass before discharge to an above the water slow speed exhaust gas discharge opening. A number of cooling jackets encircle portions of the exhaust system and coolant from the engine is delivered from these jackets both into the high speed and slow speed exhaust gas discharges.

REFERENCES:
patent: 3198162 (1965-08-01), Larsen
patent: 3310022 (1967-03-01), Kollman
patent: 3350879 (1967-11-01), Boda et al.
patent: 3520270 (1970-07-01), Miller
patent: 3750614 (1973-08-01), Giacosa
patent: 4303401 (1981-12-01), Sanmi et al.
patent: 4354849 (1982-10-01), Sanmi et al.
patent: 4421490 (1983-12-01), Nakahama

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