TRUCK NOISE IX. NOISE REDUCTION STUDY OF AN IN-SERVICE DIESEL-POWERED TRUCK. VOLUME I: TEXT

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.

  • Supplemental Notes:
    • See also Volume 2, PB-264 784.
  • Corporate Authors:

    McDonnell Douglas Astronautics Company

    5301 Bolsa Avenue
    Huntington Beach, CA  United States  92647

    Transportation Systems Center

    55 Broadway, Kendall Square
    Cambridge, MA  United States  02142

    Department of Transportation

    Office of the Secretary of Transportation, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Leneman, G
  • Publication Date: 1977-2

Media Info

  • Pagination: 72 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00153972
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT-TSC-OST-76-3-I Final Rpt.
  • Contract Numbers: DOT-TSC-764-1
  • Files: NTIS, TRIS, USDOT
  • Created Date: Jun 17 1977 12:00AM