Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1979-12-20
1981-12-15
Hix, L. T.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181272, F01N 108
Patent
active
043054773
ABSTRACT:
A tuning chamber means particularly suited to two-cycle internal combustion engines includes an exhaust inlet pipe to receive exhaust from the exhaust ports of an engine, communicating with a diverging conical section which is followed by an exhaust chamber. An elliptically-shaped flat plate is located in the straight tubular section comprising the exhaust chamber. The plate is angled to produce a converging area at the end of the expansion chamber. An exhaust pipe or stinger is in communication with the interior of the expansion chamber in close proximity to the surface of the flat plate to receive engine exhaust gases and conduct the gases to the surrounding environment. Alternatively, the stinger can be so constructed that both ends of the stinger are closed, having a plurality of perforations in proximity to each end of the stinger to receive and exhaust gases to the surrounding environment from the exhaust chamber.
REFERENCES:
patent: 879583 (1908-02-01), Pratt
patent: 1522111 (1925-01-01), Franck-Philipson
patent: 3795287 (1974-03-01), Rose
patent: 3810518 (1974-05-01), Smale
patent: 4055231 (1975-10-01), Martinez
patent: 4122914 (1978-10-01), Suyama
patent: 4143739 (1979-03-01), Nordlie
patent: 4192404 (1980-03-01), Nakagawa et al.
Deere & Company
Hix L. T,.
Tarcza Thomas H.
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