The variation in results obtained using different makes of smokemeter to carry out smoke density tests is discussed. Results collected during the previous year are described which support this view particularly in relation to cars and light van diesels. A test of in-service vehicles is then described using Crypton, Sun and Hartridge smokemeters. Current measuring procedures over 10 free accelerations were compared with the proposed change to measuring over 6 accelerations. Readings over 6 accelerations were generally more fovourable. Discrepancies continued to be found between the 3 meters. In one case the Crypton readings were 16-19% lower than the Sun and the Hartridge's readings 40% lower.

  • Availability:
  • Corporate Authors:

    Institute of Road Transport Engineeers

    1 Cromwell Place
    London SW1 25F,   England 
  • Publication Date: 1993-12


  • English

Media Info

  • Features: References;
  • Pagination: p. 18
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00663237
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Aug 24 1994 12:00AM