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Evaluation of Tractor-Trailer Rolling Resistance Reducing Measures
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 05, 2010 by SAE International in United States
Annotation ability available
This study aimed to evaluate several rolling resistance reduction measures applicable to class 8 tractor-trailer combinations. Two methods have been employed: fuel consumption tests according to the SAE J1321 Joint TMC/SAE Fuel Consumption Test Procedure - Type II, and long-term operational observations using control and test vehicles monitored throughout baseline and test periods.
One way to reduce the rolling resistance is to use wide-base tires: two different Type II fuel consumption tests revealed a more than 9 % improvement in fuel economy for a tractor-trailer combination equipped with wide-base tires. Long-term operational observation assessed the use of single wide-base tires on two 8-axle B-train tractor-trailer combinations. The results showed an average 5.11% fuel improvement and an average 4.37% energy intensity improvement. Other tests compared single-wide base tires with different tread patterns and tire compounds.
Another possibility to reduce fuel consumption is to use tires with low rolling resistance: track-test fuel consumption tests resulted in up to 2.4% improvement in fuel economy for tractor-trailers equipped with these tires on their drive axles, compared to normal tires. Long-term operational observation demonstrated 6.27% fuel improvement and 4.13% energy intensity improvement for the vehicle equipped with a technology package that included low rolling resistance tires on drive and trailer axle. Energy intensity represents the quantity of energy required per unit of production.
Other approaches to reduce rolling resistance and their impact on fuel consumption have been assessed. The influence of lift axles on fuel consumption for unloaded B-trains was evaluated, and the tests resulted in 4.7% improvement in fuel efficiency with three out of five axles raised. Other tests confirmed that maintaining the correct tire pressure can be as important as selecting the right tires. Tests conducted with two different self-adjusting wheel balancers showed no statistically significant influence on fuel consumption.
Conservative estimations demonstrate that rolling resistance reduction measures could bring annual greenhouse gas emissions reductions of up to six tonnes per vehicle with very short payback periods, and they represent viable measures for reducing fuel consumption and greenhouse gas emissions.
CitationSurcel, M. and Michaelsen, J., "Evaluation of Tractor-Trailer Rolling Resistance Reducing Measures," SAE Technical Paper 2010-01-1917, 2010, https://doi.org/10.4271/2010-01-1917.
- US Department of Energy “Technology Roadmap for the 21st Century Truck Program” Washington DC 2000
- Bridgestone Firestone North American Tire LLC “Tires & Truck Fuel Economy - A New Perspective?” Real Questions, Real Answers Four 2008
- Michaelsen, J. “Using the OTTO Truck-Simulation Software to Manage Haul Operations” Proceedings of 6th international Symposium on Heavy Vehicles Weight and Dimensions Saskatoon, Canada 2000
- Finch, J.W. “Motor Truck Engineering Handbook, Fourth Edition,” SAE International Warrendale, PA 978-1-56091-378-8 1993
- Gillespie, T.D. “Fundamentals of Vehicle Dynamics,” SAE International Warrendale, PA 978-1-56091-199-9 1992
- Untaru, M. Potincu, G. Peres, G. Tabacu, I. “Dinamica Autovehiculelor pe roti (Dynamic of Wheeled Vehicles)” 47 153 Bucharest, Romania 1981
- SAE International Surface Vehicle Recommended Practice “Joint TMC/SAE Fuel Consumption Test Procedure - Type II,” SAE Standard J1321 Oct. 1986
- Technology & Maintenance Council “TMC's 2006-07 Recommended Practices Manual “RP 1109, Type IV Fuel Economy Test Procedure” 2006
- FPInnovations “Long-term Operational Observation Handbook” Pointe-Claire, QC 2008
- Environment Canada “National Inventory Report, 1990-2005: Greenhouse Gas Sources and Sinks in Canada, Annex 12: Emission factors” 2005 http://www.ec.gc.ca/pdb/ghg/inventory_report/2005_report/a12_eng.cfm#a12_1_4
- Rollefson, J. Fu, G. Chan, A. “Assessment of the Environmental Performance and Sustainability of Biodiesel in Canada” National Research Council Canada Ottawa, ON 2004
- Environment Canada http://www.climate.weatheroffice.ec.gc.ca/
- Schulman, J. F., “Heavy Truck Weight and Dimension Limits in Canada. RAC The Railway Association of Canada” 2003 http://www.railcan.ca/documents/news/374/2003_09_23_heavyTruckWxD_en.pdf
- Task Force on Vehicle Weights and Dimensions Policy “Status Report, November 2009. Presentation at the November 24, 2009 meeting in, Montreal” Council of Deputy Ministers Responsible for Transportation and Highway Safety Ottawa, ON 2009
- The Goodyear Tire & Rubber Company Factors Affecting Truck Fuel Economy 2008
- Kenworth Truck Company “White Paper on Fuel Economy” Kenworth Truck Company 2008 http://www.kenworth.com/FuelEconomyWhitePaper.pdf
- Statistics Canada “Canadian Vehicle Survey: Annual 2008” 1499-318X Ottawa, ON 2009
- EPA (United States Environmental Protection Agency) “Greenhouse Gas Emissions from a Typical Passenger Vehicle” Washington, D.C. 2005