Exhaust silencer for outboard engine with a reflection chamber

Details Exhaust silencer for outboard engine with a reflection chamber Exhaust silencer for outboard engine with a reflection chamber

1980-05-30

1982-01-26

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181273, 440 89, F01N 108, F01N 102

Patent

active

043124224

ABSTRACT:
An exhaust silencer for an outboard engine including an expansion chamber for reducing the exhaust noise. A reflection chamber having an open end and a closed end is placed with its open end communicating with the expansion chamber at a location which is reversely spaced from the open end of an exhaust pipe discharging into the expansion chamber. This enables the engine to be operated optimally in a plurality of engine speed ranges and for the silencer to occupy a minimal volume.

REFERENCES:
patent: 2017745 (1935-10-01), Bourne
patent: 2735396 (1956-02-01), Agar
patent: 3402785 (1968-09-01), Powers et al.
patent: 3429397 (1969-02-01), Case
patent: 4145988 (1979-03-01), Harada

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