Vehicle engine noise reducing assembly

Details Vehicle engine noise reducing assembly Vehicle engine noise reducing assembly

1980-02-14

1982-06-15

Peters, Jr., Joseph F.

Motor vehicles

Power

Radiators and condensers, mounting

181211, B60K 1104

Patent

active

043345883

ABSTRACT:
A noise reducing assembly, including a sound absorbing grille (30) with louvers (33) and a sound and air diverting unit (40) is used for noise control in an earthmoving vehicle (20). The sound absorbing grille (30) has a perforated panel (32) covering an air exhaust opening (22). A plurality of sound absorbing louvers (33) are attached to the perforated panel (32) in spaced relationship. The sound and air diverting unit (40) is disposed in front of the sound absorbing grille (30), and includes means (42a,42b,42c) for diverting the sound and air from said sound absorbing grille (30) vertically and transversely of the vehicle body. The walls of the louvers (33) and the sound and air diverting unit (40) are filled with sound absorbing material (37,43).

REFERENCES:
patent: 3489351 (1970-01-01), Patterson
patent: 3762489 (1973-10-01), Proksch et al.
patent: 3812927 (1974-05-01), Kawamura
patent: 3820629 (1974-06-01), Carlson et al.
patent: 3857453 (1974-12-01), Buttke et al.
patent: 3897850 (1975-08-01), Thompson et al.
patent: 3960238 (1976-06-01), McClure et al.
patent: 4121683 (1978-10-01), Kohriyama

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