A description is given of diesel engine noise control work in progress at Perkins Cav. Noise reduction packages include damping of non-structural covers for sump and tappet box, close-fitting engine shields filled with acoustic foams and torsional vibration damper pulleys. Noise reductions of 3-6 db(a) were achieved by these means. Further noise reductions of up to 29 db(a) in cab interior levels were achieved by attention to exhaust, induction and cooling systems and also by conventional isolation, insulation and absorption techniques. A noise-from-vibration method developed by Perkins enables major noise sources to be identified requiring only the measurement of vibration. /TRRL/

  • Availability:
  • Corporate Authors:

    Institution of Mechanical Engineers

    1 Birdcage Walk
    London SW1H 9JJ,   England 
  • Publication Date: 1979-2-3

Media Info

  • Features: Figures;
  • Pagination: p. 26-7
  • Serial:
    • Volume: 4
    • Issue Number: 1
    • Publisher: Institution of Mechanical Engineers
    • ISSN: 0307-6490

Subject/Index Terms

Filing Info

  • Accession Number: 00195014
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jul 11 1979 12:00AM