|
Did anyone fancy evaluating this statement with the appropriate tool ?
I threw some numbers at it and found out the following is required to hit 50mpg @ 80 mph
Vehicle weight [1]: 1200 Kg
Crr - Coefficient of rolling resistance [2]: .008
Cd - Coefficient of drag [3]: 0.30
A - frontal area [4]: 2 sq meters
CdA 0.60 m2 / 6.46 ft2
Fuel energy density (Wh/US gal.) [5]: - or -
Engine efficiency [6]: 0.35
Drivetrain efficiency: 0.95
One should try with the actual frontal area of the Golf.
What's the required Cd bump ?
__________________
|