Exhaust mufflers for internal combustion engines

Details Exhaust mufflers for internal combustion engines Exhaust mufflers for internal combustion engines

1981-11-30

1984-08-28

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181268, F01H 108

Patent

active

044678878

ABSTRACT:
An exhaust muffler comprises a closed chamber, an inlet pipe leading into the chamber, an outlet pipe leading from the chamber, two spaced bulkheads dividing the chamber into first and second buffer compartments separated by an intermediate compartment containing a glass fiber pack, three pass tubes extending through the bulkheads and across the intermediate compartment, two of the pass tubes forming continuations of the inlet and outlet pipes respectively and having flared open ends in the buffer compartments respectively, and a parabolic noise reflector located opposite the open end of said two pass tubes in such manner as to reflect down the pass tubes a proportion of the noise generated by gases flowing along the pass tubes.

REFERENCES:
patent: 2070543 (1937-02-01), Cary et al.
patent: 2109220 (1938-02-01), Noblitt et al.
patent: 4220219 (1980-09-01), Flugger

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