This report covers the period up to the commencement of the car fleet survey which began in October 1983. It is reported that gradient is an important factor affecting on road fuel consumption. The influence of some vehicle component temperatures and use of the choke have been found to be important variables affecting cold start fuel consumption measured over the range of seasonal conditions along 10 different home to work routes. The replication of on road component temperatures on the chassis dynamometer with the aid of the computer controlled cooling fans, is an important factor in replicating on-road fuel consumption. Use of a trailer, with a two force transducer to measure the rolling resistance of several sets of tyres on the road has been only partially successful. These data are needed to obtain a correction factor for the rolling resistance on the dynamometer. Achievements of the models for fuel consumption and exhaust emissions are discussed. In October work moved into its most important phase -the measurement of data for a fleet of cars. The specially developed test program is described. (TRRL)

  • Corporate Authors:

    Melbourne University, Australia

    Department of Mechanical Engineering, Grattan Street
    Parkville, Victoria 3052,   Australia 
  • Publication Date: 1984

Media Info

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

Subject/Index Terms

Filing Info

  • Accession Number: 00396092
  • Record Type: Publication
  • Source Agency: ARRB
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Jan 31 1986 12:00AM