Improving Vehicle Fuel Economy and Reducing Emissions by Driving Technique

This paper explores how heavy trucks used in freight transportation can use driving technique to improve their fuel economy and reduce vehicle emissions. The author notes that although the heavy truck fleet is quite small compared to passenger cars, the heavier vehicles can achieve a significant impact in the overall vehicle emissions with only slight changes in the vehicle's motion (speed and shifting habits). The author presents a computer simulation which is based on vehicle dynamics, engine maps of fuel consumption and emissions and other technical data of vehicles and roads as well as driving technique. The output quantities are the fuel consumption and emissions of nitrogen oxides, carbon monoxide, hydro carbons, particulate matters and carbon dioxide. The author also introduces the concept of “schwung”, which means utilizing the excess of the speed that can be achieved on downward slopes because of gravity. The grade resistance is negative on downward slopes and causes high acceleration for a heavy vehicle, and no fuel is consumed. The kinetic energy is increased and can be utilized on the next upgrade. However, the “schwung” works only if the vehicle is heavy and the road is hilly. The author concludes that truck drivers are the vital players in this approach, as they can have a positive impact on climate change with their driving techniques. In addition, telematics can be used to improve the driver's information and subsequent driving technique.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; Tables;
  • Pagination: 8p
  • Monograph Title: ITS Connections: Saving Time. Saving Lives

Subject/Index Terms

Filing Info

  • Accession Number: 01142563
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 24 2009 7:05AM