The National Research Council of Canada (NRC) has completed an evaluation of several prototype and commercially-available drag reduction devices for Class- 8 tractor-trailer combinations.Full-scale wind tunnel measurements were made on new production add-on devices meant to reduce the aerodynamic drag of Class-8 tractor-trailers beyond that provided by the current aerodynamic package. They consisted of devices to reduce the tractor-trailer-gap drag, to reduce trailer underbody and bogey drag, and to reduce trailer base drag. Simple estimates of fuel consumption at steady speed on a flat road indicated annual fuel savings of 6,667 liters (1,761 US gallons). This estimate was predicated on a cruising speed of 100 km/h (62 mi/h) and 130,000km (81,0000 miles) traveled annually at this speed. The paper is a summary of the results more fully presented in SAE 2006-01-3456.
Summary of full-scale wind tunnel tests of aerodynamic drag-reducing devices for tractor-trailers
Zusammenstellung von Windkanaltests von Vorrichtungen zur Verminderung des Luftwiderstandes von Lastzügen
2009
12 Seiten, 5 Bilder, 2 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
APPARATUS FOR REDUCING AERODYNAMIC DRAG ON TRACTOR-TRAILERS
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