Engine air cleaner - noise reducer

Details Engine air cleaner - noise reducer Engine air cleaner - noise reducer

1987-03-18

1988-11-08

Fuller, B. R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181255, 181264, 181269, F02M 3500

Patent

active

047829125

ABSTRACT:
A combination air inlet - engine noise silencer consists of a shell-type housing of large volume having a small volume air inlet tube at one end and an outlet of restricted area at another portion at right angles to the inlet for direct passage into the engine induction system, the air inlet tube containing a conical-like insert coaxially mounted with its apex facing upstream to provide a base portion at right angles to the axis of the inlet tube whereby engine acoustical waves passing from the engine towards the inlet are reflected against the base portion of the cone back into the expansion chamber to be dissipated and broken-up thereby reducing the engine noise, the cone concurrently increasing the velocity of the air flow into the engine proper to increase operating efficiency.

REFERENCES:
patent: 1521400 (1924-12-01), Shaw
patent: 2510441 (1950-06-01), Vokes
patent: 2954096 (1960-09-01), McMullen
patent: 3120876 (1964-02-01), Lirette
patent: 4197922 (1980-04-01), Weber et al.
patent: 4408679 (1983-10-01), Littrell
patent: 4449609 (1984-05-01), Stoll

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