TRUCK NOISE IV-D: THE REDUCTION OF ENGINE NOISE ON HEAVY DUTY DIESEL TRUCKS

The vibration of the external surfaces of the engine is sometimes a major cause of noise emissions from a Detroit Diesel 8V-71, two cycle diesel engine. Since major engine modifications were beyond the scope of this project, the reduction in engine noise was obtained through shielding. One shielding technique employed close-fitting acoustical covers mounted to the engine itself. Another employed a partial engine enclosure mounted to the chassis. With both shielding techniques, the proper acoustical lining was found to be important as well as sealing. A Detailed development of these shields is given.

  • Supplemental Notes:
    • See also report no. 4, PB-238 361.
  • Corporate Authors:

    International Harvester Company

    Truck Engineering Center
    Fort Wayne, Indiana,   United States  46801

    Office of Noise Abatement

    400 7th Street, SW
    Washington, DC  United States  20590
  • Authors:
    • Shrader, J T
  • Publication Date: 1975-4

Media Info

  • Pagination: 127 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00092243
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: Rpt. No. 5, DOT/TST-75-88
  • Contract Numbers: DOT-OS-20222
  • Files: NTIS
  • Created Date: Oct 18 1976 12:00AM