EMISSION LEVELS AND FUEL CONSUMPTION OF VEHICLES CERTIFIED TO ADR 27 AND 27A

Exhaust emission and fuel consumption tests were carried out on 136 vehicles certified to either ADR 27 or ADR 27a. While the range of vehicles from which the sample was drawn was chosen to be broadly representative of vehicles sold in Australia, the individual vehicles were selected according to availability and not to a statistical sampling plan. The resultant data were used to estimate exhaust emission deterioration factors if in-service ADR 27a vehicles, assess the effect of ADR 27a (compared with ADR 27) on emissions and fuel consumption for in-service vehicles, and assess the effect of ADR 27a (compared with ADR 27) on emissions and fuel consumption when vehicles were tuned to manufacturers' specifications. For both ADR 27 and ADR 27a vehicles, emissions of carbon monoxide were significantly reduced by tuning to manufacturers' specifications. ADR 27a vehicles, whether tested "as received" or "after retune" had statistically significantly higher fuel consumption than ADR 27 vehicles for both city and highway driving cycles. /TRRL/

  • Corporate Authors:

    Department of Transport, Australia

    Office of Road Safety, G.P.O. Box 1839
    Melbourne, Victoria,   Australia 
  • Publication Date: 1978-12

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 97 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00300298
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Oct 17 1979 12:00AM