Idle exhaust relief system for outboard motors

Details Idle exhaust relief system for outboard motors Idle exhaust relief system for outboard motors

1985-12-12

1987-05-26

Peters, Jr., Joseph F.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

60272, B63H 2134

Patent

active

046681990

ABSTRACT:
An exhaust system for an outboard motor (10) includes a main exhaust passageway (16) extending through a partially water filled chamber (17) in the drive shaft housing (13). An inlet idle relief passage (23) connects the top of the chamber (17) with the main exhaust passageway (16) and an outlet passage (24) connects the top of the chamber (17) with the atmosphere. The system thus defines an effective exhaust silencer for the idle exhaust.

REFERENCES:
patent: 3045423 (1962-07-01), Hulsebus
patent: 3198162 (1965-08-01), Larsen
patent: 3310022 (1967-03-01), Kollman
patent: 3350879 (1967-11-01), Boda et al.
patent: 3577952 (1971-05-01), Tado
patent: 3967446 (1976-07-01), Harralson et al.
patent: 4354849 (1982-10-01), Sanmi et al.
patent: 4421490 (1983-12-01), Nakahama
patent: 4507092 (1985-03-01), Hall et al.

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