Wind-tunnel tests were performed on a scale model of a cab-over-engine tractor-trailer vehicle and several modifications of the model. Results from two of the model configurations were compared with full-scale drag data obtained from similar configurations during coast-down tests. Reductions in fuel consumption derived from these tests are presented in terms of fuel quantity and dollar savings per vehicle year, based on an annual driving distance of 160,900 km (100,000 mi.). The projected savings varied from 13,001 (3435) to 25,848 (6829) liters (gallons) per year which translated to economic savings from $3435 to about $6829 per vehicle year for an operating speed of 88.5 km/h (55 mph) and wind speeds near the national average of 15.3 km/h (9.5 mph). The estimated cumulative fuel savings for the entire U.S. fleet of cab-over-engine tractor, van-type trailer combinations ranged from 4.18 million kl (26.3 million bbl) per year for a low-drag configuration to approximately twice that amount for a more advanced configuration.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Reduction of aerodynamic drag and fuel consumption for tractor-trailer vehicles


    Contributors:

    Published in:

    Publication date :

    1979-10-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





    Drag Reduction of Trailer-Tractor Configuration by Aerodynamic Meaun

    Wong,H.Y. / Cox,R.N. / Rajan,A. et al. | Automotive engineering | 1980




    Study of aerodynamic drag reduction on a full-scale tractor-trailer

    Steers, L. / Montoya, L. | Tema Archive | 1976