PERKINS APPROACH TO NOISE REDUCTION

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:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03076490
• 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:
  • AUTOMOTIVE ENGINEER
  • Volume: 4
  • Issue Number: 1
  • Publisher: Institution of Mechanical Engineers
  • ISSN: 0307-6490

Subject/Index Terms

• TRT Terms: Absorption; Damping (Engineering); Diesel engines; Electric insulating materials; Engines; Insulating materials; Measurement; Mufflers; Noise; Noise control; Sound; Sound level; Torsion; Vehicle cabs; Vehicle compartments; Vehicle interiors; Vibration
• Uncontrolled Terms: Decreases; Modifications
• Old TRIS Terms: Engine noise
• ITRD Terms: 6758: Absorption; 9009: Decrease; 1314: Diesel engine; 6914: Insulation; 1377: Interior (veh); 6136: Measurement; 9048: Modification; 1395: Silencer; 6748: Sound; 6747: Sound level; 5558: Vibration
• Subject Areas: Environment; Highways; Vehicles and Equipment;

Filing Info

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