An aerodynamic unit is configured for attachment onto a roof of a road vehicle, so that air passes over the unit during forward movement of the road vehicle. The unit has a first end for positioning distal to a rear end of a vehicle roof, and a second end for positioning proximal a rear end of a vehicle roof. The unit includes an inclined guide portion which decreases in height in a direction towards the trailing end of the unit. The unit also includes a flow director at or near the leading end of the aerodynamic unit, for directing air flow to the guide portion. The flow director is configured to have a height increasing in a direction from the leading end towards the trailing end. The unit may include vortex generators protruding from the guide portion. A fin may extend along each side of the unit in a direction between the trailing end and the leading end.
IMPROVEMENTS IN THE FUEL EFFICIENCY OF ROAD VEHICLES
VERBESSERUNGEN DER KRAFTSTOFFEFFIZIENZ VON STRASSENFAHRZEUGEN
AMÉLIORATIONS DE L'EFFICACITÉ DU CARBURANT DANS DES VÉHICULES ROUTIERS
2019-09-25
Patent
Electronic Resource
English
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |