Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1980-03-19
1982-02-16
Hartary, Joseph W.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181229, 181231, 181261, 181268, 181272, 55276, 123 25E, 123568, F01N 108, F01N 304
Patent
active
043155596
ABSTRACT:
A muffler for internal combustion engines and comprising a housing having an inlet passageway for admitting exhaust gases into the interior of the housing and an outlet passageway for discharging the exhaust gases from the housing, the interior of the housing providing a fluid passageway having a cross-sectional area greater than the cross-sectional area of the inlet and outlet passageways for reducing back pressure as the gases move through the muffler, baffles disposed within the housing and in the fluid passageway for providing a tortuous path of travel for the gases moving between the inlet and outlet passageways to increase the length of the travel of the gases through the muffler and to provide alcoves or pockets in the interior of the housing for cushioning the flow of the gases therethrough in order to equalize the pressure within the muffler, and a passageway providing communication between the interior of the housing and the combustion chamber of the engine for directing a portion of the hot exhaust gases back into the combustion chamber for burning of residual fuel contained in the exhaust gases to increase the fuel efficiency of the engine.
REFERENCES:
patent: 1866004 (1932-07-01), Beamer
patent: 2354179 (1944-07-01), Blanc
patent: 2640557 (1953-06-01), Gaffney
patent: 3361227 (1968-01-01), Kauko Kaari
patent: 3498406 (1970-03-01), Heath
patent: 3786896 (1974-01-01), Foster et al.
Fuller Benjamin R.
Hartary Joseph W.
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