A SIMPLE METHOD OF DESIGN OF REACTIVE MUFFLERS FOR SMALL TWO-STROKE AND FOUR-STROKE ENGINES

Some design rules are presented for choosing the dimensions of silencers for two-stroke and four-stroke engines. The cause of exhaust noise is explained, and details are given of the design and testing of a reactive type of silencer which makes use of pipes and chambers of tuned lengths. Test results show the silencer to be very effective with little loss of power. A major disadvantage of this type of silencer is that the relative lengths of the pipes and chambers are very critical to the performance, requiring an accuracy of manufacture within 2 percent. /TRRL/

  • Availability:
  • Corporate Authors:

    Technical Publications Limited

    C.P.O. 3047
    Wellington,   New Zealand 
  • Authors:
    • Harman, TTC
  • Publication Date: 1976-10

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 236-238
  • Serial:
    • NEW ZEALAND ENGINEERING
    • Volume: 31
    • Issue Number: 10
    • Publisher: Institution of Professional Engineers New Zealand
    • ISSN: 0028-808X

Subject/Index Terms

Filing Info

  • Accession Number: 00149887
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Jun 17 1977 12:00AM