Exhaust system for outboard motor

Details Exhaust system for outboard motor Exhaust system for outboard motor

1993-08-12

1994-09-13

Huppert, Michael S.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

440 53, 440 61, 440 77, 440900, B63H 2128

Patent

active

053464168

ABSTRACT:
An outboard motor for mounting on the transom of a boat, has a horizontal engine and output shaft, an exhaust system having a high speed exhaust discharge includes a horizontal portion and a vertical portion having an enlarged cross sectional water jacketed muffler within a water chamber having a retaining wall defining the water level, and a low speed exhaust discharge extending from the muffler into a conduit having an end disposed below the water level of said water chamber, a low speed exhaust gas expansion chamber receiving exhaust gas and expelling same to the atmosphere. The outboard motor is tiltable and provides an enclosure for the engine area including a cowling, hood, and moveable hood section and a sleeve between the moveable hood and engine to perfect enclosure during tilting.

REFERENCES:
patent: 1034987 (1912-08-01), Dacassou
patent: 1785089 (1930-12-01), Irgens
patent: 2460419 (1949-02-01), Kincannon
patent: 2579221 (1951-12-01), Wanzer
patent: 2781748 (1957-02-01), Stucke
patent: 3198162 (1965-08-01), Larsen
patent: 3577952 (1971-05-01), Tado
patent: 4600395 (1986-07-01), Pichl
patent: 4687450 (1987-08-01), Bland et al.
patent: 4795383 (1989-01-01), Binversie et al.
patent: 4940434 (1990-07-01), Kiesling
patent: 5088946 (1992-02-01), Nakayama

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