Assembly for silencing engine cooling fan noise

Details Assembly for silencing engine cooling fan noise Assembly for silencing engine cooling fan noise

1979-10-29

1981-04-07

Hix, L. T.

Acoustics

Sound-modifying means

Housing or enclosure

181225, 181258, 181286, 181288, 180 69R, 165135, B62D 2510, E04B 182, F01N 102, F01N 124

Patent

active

042600375

ABSTRACT:
A sound absorbing and attenuating panel is located at one end of an engine compartment for silencing the noise generated by an engine cooling fan located in the compartment. The panel includes a first set of laterally spaced, vertically extending silencing units comprising sound absorbing material encased in perforated containers and a second set of silencing units located one each between each of the first set of units and each comprising a container defining a combination of a pair of resonator chambers separated by a cavity filled with sound absorbing material.

REFERENCES:
patent: 3762489 (1973-10-01), Proksch et al.
patent: 3820629 (1974-06-01), Carlson et al.
patent: 3897850 (1975-08-01), Thompson et al.
patent: 4169501 (1979-10-01), Takeuchi et al.

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