Snowmobile muffler

Details Snowmobile muffler Snowmobile muffler

1974-12-09

1976-05-18

Gonzales, John

Acoustics

Auditorium

181 35B, 181 60, F01N 108

Patent

active

039571327

ABSTRACT:
An improved muffler for snowmobiles having multiple stages including at least one radial tubular attenuator comprising one or more flat, two-part casings, the parts being peripherally identical and configured to jointly form a plurality of passages, having bell-mouth inlets and diffuser outlets, communicating with a common central cavity. In a first embodiment, the engine exhaust is conducted axially to the central cavity and the plural passages discharge into a muffler chamber to comprise the first of several muffler attenuating stages. In a second embodiment, the engine exhaust is supplied radially. Another embodiment shows a pair of the radial tubular attenuators connected serially, the gas flow in the two sets of radial passages being in opposite directions and a second chamber being interposed between the two. A still further embodiment shows a pair of the casings jointly fed centrally with the engine exhaust.

REFERENCES:
patent: 310654 (1885-01-01), DeWitt
patent: 773984 (1904-11-01), Richard
patent: 2507336 (1950-05-01), Golliez
patent: 2644542 (1953-07-01), Bourne

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