The article discusses research into the problem of exhaust gas odour using the man fm diesel engine modified for stratified charge operation. Three measures were found to reduce exhaust odour of a cold engine - (1) heating, (2) air intake restriction, and (3) exhaust recirculation. Of these, air intake heating is the easiest to control. Of the combustion by-products which cause exhaust gas odour, aldehydes are the most significant under cold idling conditions. The article shows how aldehyde content can be reduced by 70% by an increase in compression temperature. Restriction of air intake also reduces hydrocarbon and nox emissions without unduly increasing fuel consumption. /TRRL/

  • Availability:
  • Corporate Authors:

    Institution of Mechanical Engineers

    1 Birdcage Walk
    London SW1H 9JJ,   England 
  • Publication Date: 1977-7

Media Info

  • Features: Figures;
  • Pagination: p. 60-61
  • Serial:
    • Volume: 2
    • Issue Number: 3
    • Publisher: Institution of Mechanical Engineers
    • ISSN: 0307-6490

Subject/Index Terms

Filing Info

  • Accession Number: 00177384
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 27 1978 12:00AM