Noise suppressing, air cooled enclosure for an engine

Details Noise suppressing, air cooled enclosure for an engine Noise suppressing, air cooled enclosure for an engine

1983-05-02

1985-03-12

Hix, L. T.

Acoustics

Sound-modifying means

Housing or enclosure

180316, 123198E, 165135, F01N 124

Patent

active

045039313

ABSTRACT:
A closed enclosure for a vehicle engine has an air inlet and an air outlet formed at its front and rear ends. Both air inlet and air outlet have sets of sound absorber blades for noiselessly admitting ambient cooling air into the enclosure and for noiselessly exhausting the air therefrom. Disposed horizontally within the enclosure, a first heat insulating partition divides its interior into an engine compartment accommodating the engine and, thereover, a muffler and air cleaner compartment. A second heat insulating partition is mounted vertically on the first partition to subdivide the muffler and air cleaner compartment into a muffler compartment receiving an exhaust muffler assembly and an air cleaner compartment receiving an air cleaner assembly. The engine compartment is open both forwardly and rearwardly for the passage of the cooling air therethrough. While the air cleaner compartment is closed, the muffler compartment is open forwardly to take in part of the ambient cooling air from the air inlet via another set of sound absorber blades. An additional pair of air outlets are defined in both sidewalls of the enclosure for the escape of the cooling air from the muffler compartment.

REFERENCES:
patent: 3856439 (1974-12-01), Moehrbach
patent: 3866580 (1975-02-01), Whitehurst et al.
patent: 4071009 (1978-01-01), Kraina
patent: 4385678 (1983-05-01), Cederbaum

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