Quote:
Originally Posted by jonnyvtec
When the fan shutter is closed, the Cd falls by 0.013, which is equivalent to a fuel saving of up to 2% when travelling at 80 mph.
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Simply slowing to 60mph would decrease aero drag 44% (drag force goes as the square of the speed). Since power to overcome aero drag goes as the cube of the velocity, slowing to 60mph would reduce the power required to overcome aero drag by 58%. Not clear if fuel consumption is linear WRT power output plus there are other losses such as friction and tire rolling resistance, but still that's probably a lot more than 2%.
Cool technology though!!
