MODELLING EMISSIONS FROM CARS

Exhaust emissions, HC, CO and NOX are identified as being more variable than fuel consumption, and therefore more difficult to model. The causes of variability in both source and measurement are described. The emissions rates and their coefficients of variation are depicted on joint axes of power and speed which allow explanation of the terms in 5 models of the lumped parameter type. Four cars have been selected to test the models. The performance of the models in 'closed loop' tests tends to improve with increasing complexity. Generally, emissions are predicted with 2 to 5 times the errors experienced in the prediction of fuel consumption with a given level of model. For the covering abstract of the conference, see TRIS 452099. (TRRL)

• Record URL:
  http://arrbknowledge.com
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00050164
• Supplemental Notes:
  • Proceedings of the 10th Australian Transport Research Forum, Melbourne, 13-15 May 1985. Volumes 1 and 2.
• Corporate Authors:

  ARRB

  Melbourne, Victoria  Australia 
• Authors:
  • WATSON, H C
  • MILKINS, E E
  • Holyoake, P A
  • Khatib, E T
  • Kumar, S
• Publication Date: 1985

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 87-109
• Serial:
  • Publication of: Australian Road Research Board
  • Publisher: ARRB
  • ISSN: 0005-0164

Subject/Index Terms

• TRT Terms: Accuracy; Automobiles; Calibration; Carbon monoxide; Conferences; Exhaust gases; Forecasting; Fuel consumption; Hydrocarbons; Mathematical models; Measurement; Nitric oxide; Nitrogen; Nitrogen oxides; Oxides; Speed; Test procedures; Variables; Vehicles
• Uncontrolled Terms: Models
• ITRD Terms: 6171: Calibration; 7391: Carbon monoxide; 8525: Conference; 2442: Emission; 232: Fuel consumption; 7367: Hydrocarbon; 6473: Mathematical model; 7128: Nitrogen; 7372: Oxide; 5408: Speed; 6288: Test method; 9086: Variability; 1255: Vehicle
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00452102
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, TRIS, ATRI
• Created Date: May 31 1986 12:00AM