As a result of joint discussions between the Association of American Railroads (AAR) and Donaldson Co., Inc., (Donaldson) an agreement was made in which Donaldson would perform a "Feasibility Study Toward Development of a Locomotive Muffler Prototype". The study was to determine the effectiveness of an exhaust muffler in reducing the overall total locomotive noise levels when measured 100 feet away from and perpendicular to the locomotive. If determined feasible, further action would be to develop a muffler prototype that could be installed within the carbody that would provide a specified degree of attenuation of the exhaust noise of the locomotive. To meet this objective it was necessary to select two representative locomotive models (turbocharged and Roots-blown) and test them with a high attenuation external muffler for the purpose of determining the reduction in total locomotive noise when the exhaust noise is effectively attenuated to an insignificant level. The remaining noise measured at 100 feet would then be the total contribution of the other noise sources on the locomotives, such as, engine cooling fans, engine air intake, car body noise, etc. The results of this feasibility study are the subject of this report.

  • Corporate Authors:

    Donaldson Company, Incorporated

    Product Engineering Department, P.O. Box 1299
    Minneapolis, MN  United States  55440
  • Publication Date: 1975-9

Media Info

  • Features: Figures;
  • Pagination: 38 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00139453
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Files: TRIS
  • Created Date: Oct 6 1976 12:00AM