ENVIRONMENTAL TRAFFIC MANAGEMENT: A REVIEW OF FACTORS AFFECTING COLD START EMISSIONS

This literature review examines the factors influencing the elevated emission levels from vehicles associated with the cold start phenomenon. Of the factors known to influence cold start emissions, it appears that among the most important are the cooling down period of the engine prior to restart, and ambient temperature. The state of cold start modelling is discussed. It is argued that current cold start models are inadequate and must be improved in order to determine the changes in emission levels associated with traffic management. Future models could include a method to represent the engine warm-up and cool-down profiles at a range of ambient temperatures, coupled with information on vehicle usage. Some thought is also given to how traffic management schemes may affect cold start emissions, although for all types of scheme the effects are currently unknown. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09684107
• Corporate Authors:

  TRL

  Crowthorne House, Nine Mile Ride
  Wokingham, Berkshire  United Kingdom  RG40 3GA
• Authors:
  • BOULTER, P G
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: 39 p.
• Serial:
  • TRL REPORT 270
  • Publisher: TRL
  • ISSN: 0968-4107

Subject/Index Terms

• TRT Terms: Automobiles; Catalysis; Cold starts (Driving); Fuels; Measurement; Motors; Pollutants; Temperature; Traffic control
• ITRD Terms: 1243: Car; 7127: Catalysis; 1809: Cold starting; 2442: Emission; 3850: Fuel; 6136: Measurement; 1334: Motor; 6722: Temperature; 654: Traffic control
• Subject Areas: Energy; Operations and Traffic Management;

Filing Info

• Accession Number: 00740959
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, ATRI
• Created Date: Oct 30 1997 12:00AM