A patented silencer was constructed which used exhaust gas to heat and dry the outer case of the silencer, thus eliminating corrosion; but the chambered design was found to amplify exhaust noise at certain speeds. Investigation and tests led to the development of a coherent theory of exhaust system acoustics which explained the function of the silencer and the pipe-to-silencer interaction. The final silencer design has excellent gas flow performance and ensures adequate noise reduction, even with changes of pipe length. /TRRL/

  • Availability:
  • Corporate Authors:

    Technical Publications Limited

    C.P.O. 3047
    Wellington,   New Zealand 
  • Authors:
    • Walker, GEL
  • Publication Date: 1972-12

Media Info

  • Features: Figures; References;
  • Pagination: p. 365-373
  • Serial:
    • Volume: 27
    • Issue Number: 12
    • Publisher: Institution of Professional Engineers New Zealand
    • ISSN: 0028-808X

Subject/Index Terms

Filing Info

  • Accession Number: 00262060
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Nov 20 1974 12:00AM