Large, high r.p.m. diesel engine exhaust muffler

Details Large, high r.p.m. diesel engine exhaust muffler Large, high r.p.m. diesel engine exhaust muffler

1985-01-18

1986-08-12

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181268, 181272, F01N 112

Patent

active

046050922

ABSTRACT:
A muffler for large high r.p.m. internal combustion diesel engine in which the structure cancels sound waves by interference. The gases generally flow in one direction through the muffler with intermittant flow reversal occurring only upon acceleration. The muffler is formed with a plurality of longitudinal chambers divided by reflection walls. Edge echo openings in the reflection wall permit limited gas entry into the chambers. A plurality of helical members surrounded by a large open tube and pierced by a small open tube channel a substantial portion of all of the gases through a bulkhead wall which divides the muffler housing into two large open chambers and a smaller percentage of gases flows through one or more large open tubes.

REFERENCES:
patent: 2919761 (1960-01-01), Smith
patent: 4203503 (1980-05-01), Franco et al.
patent: 4317502 (1982-03-01), Harris et al.
patent: 4485890 (1984-12-01), Harris et al.

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