VARIABILITY IN EXHAUST EMISSION AND FUEL CONSUMPTION IN URBAN DRIVING

The exhaust emissions and fuel consumption of vehicles are influenced by several external factors e.g. the type of car, the traffic conditions and the driver. This paper reports on an investigation of variability among exhaust emission and fuel consumption in urban driving. The aim was to study the extent to which this variability is related to the street type, the traffic conditions, the driver and the gender of the driver. Twelve randomly chosen subjects drove a measuring car on the same street loop on four different occasions, two at peak hours and two at off peak hours. The study resulted in 439 driving patterns divided into five street types. On the bases of detailed speed data the fuel consumption and exhaust emission of HC and NOx was calculated for each driving pattern using the emission model Veto. Emissions and fuel consumption were analysed using general factorial analysis of variance with respect to differences between the following factors: 1) street type, 2) peak hour or off peak hour, 3) different drivers and 4) female and male drivers. The environmental effects showed significant differences among different types of streets and drivers. Peak/Off peak hour and gender showed generally no significant differences but significant interactions between gender and street type were identified. The greatest absolute differences appeared among street types. At their highest fuel consumption increased by 153 per cent, HC emissions by 323 per cent and NOx by 248 per cent between street types. Comparing drivers over all street types the "best" and the "worst" driver differed by 21 per cent for fuel consumption, 72 per cent for HC emission and 48 per cent for NOx emission. For the covering abstract of the conference see ITRD E205613. (A)

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  INSTITUTIONEN FOER TEKNIK OCH SAMHAELLE, LUNDS TEKNISKA HOEGSKOLA

  BOX 118
  LUND,   Sweden  SE-22100

  INSTITUTIONEN FOER TEKNIK OCH SAMHAELLE, LUNDS TEKNISKA HOEGSKOLA

  BOX 118
  LUND,   Sweden  SE-22100
• Authors:
  • ERICSSON, E
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: p. 31-46
• Serial:
  • URBAN TRANSPORT SYSTEMS. PROCEEDINGS FROM THE 2ND KFB RESEARCH CONFERENCE IN LUND, SWEDEN, 7-8 JUNE, 1999 (BULLETIN 187)
  • Issue Number: 187:01
  • Publisher: INSTITUTIONEN FOER TEKNIK OCH SAMHAELLE, LUNDS TEKNISKA HOEGSKOLA
  • ISSN: 1404-272X

Subject/Index Terms

• TRT Terms: Conferences; Drivers; Driving; Females; Fuel consumption; Highway design; Hours; Human beings; Measurement; Off peak periods; Peak periods; Pollutants; Traffic flow; Urban areas; Variables
• ITRD Terms: 8525: Conference; 1772: Driver; 1855: Driving (veh); 2442: Emission; 232: Fuel consumption; 2855: Highway design; 1787: Man; 6136: Measurement; 611: Off peak hour; 612: Peak hour; 671: Traffic flow; 313: Urban area; 9086: Variability; 1788: Woman
• Subject Areas: Energy; Highways;

Filing Info

• Accession Number: 00822258
• Record Type: Publication
• Source Agency: Swedish National Road and Transport Research Institute (VTI)
• Files: ITRD
• Created Date: Jan 7 2002 12:00AM