Acoustics – Sound-modifying means – Muffler – fluid conducting type
Patent
1985-04-09
1987-02-24
Fuller, Benjamin R.
Acoustics
Sound-modifying means
Muffler, fluid conducting type
181228, 181266, 181272, F01N 102, F01N 108
Patent
active
046450319
ABSTRACT:
An exhaust passage has an upstream end connected to an engine combustion chamber and a downstream end open to the atmosphere. A device substantially equalizes natural frequencies of the exhaust passage respectively corresponding to third-degree and fourth-degree modes of standing pressure waves developing in the exhaust passage. A pressure damper is connected to a point of the exhaust passage at which an antinode of the third-degree or fourth-degree mode lies.
REFERENCES:
patent: 3382948 (1968-05-01), Walker et al.
patent: 3543878 (1970-12-01), Hamilton
patent: 3613830 (1971-10-01), Hubbell, III
patent: 3655011 (1972-04-01), Willett
patent: 4333544 (1982-06-01), Seeger
Kaminaga Toshiyuki
Omura Hideo
Takei Hirofumi
Fuller Benjamin R.
Nissan Motor Company Limited
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