A series of tests to measure the noise contributions of subsystems were performed on a truck with a conventional short cab, equipped with a Cummins V-903 engine. The data acquired in these tests were used to select retrofittable components which would effectively reduce the total vehicle noise. The final truck had the original induction system, a new single vertical late model muffler, a clutched fan drive and engine covers. All of the retrofitted components are commercially available and in stock. The total cost of all three changes is between $1000 and $1445 for a 3 dBA noise reduction. A 2 dBA noise reduction could be attained with engine covers only at a cost of from $470 to $770.


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    Title :

    Truck Noise IX. Noise Reduction Study of an In-Service Diesel-Powered Truck. Volume I: Text


    Contributors:
    G. Leneman (author)

    Publication date :

    1977


    Size :

    72 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English