Quote:
Originally Posted by Vwbeamer
using this tool
https://ecomodder.com/forum/tool-aer...resistance.php
and these variables-
Vehicle weight: 2812.3 kg / 6200 lbs
Crr: .008
Cd: .35
A: 2.9 m2 / 31 ft2
Fuel energy density (Wh/US gal.): 33557
Engine efficiency: .28
Drivetrain efficiency: .95
Parasitic overhead (Watts): 0
rho: 1.225 kg/m3
I don't think you can consistantly get the MPG you want with aero mods alone. |
Drivetrain efficiency of 95% is REALY optimistic for a front engine RWD automatic vehicle.
85-90% is more realistic.
With realistic values for drivetrain (0.85) and engine (0.22) efficiency as well as rolling resistance (0.010), I'm looking at about 20 mpg at 60 mph/100 km/h.
If I reduce the CD to 0.25, wich would mean a lot of aerodynamic modifications, we're looking at about 24 mpg.
Only when you're going full Basjoos and drop your CD to 0.17, you're getting close to 30 mpg but that's before factoring in the reduced engine efficiency at low power(17-26 hp).
Gasoiline V8s aren't exactly great at that.
TL/DR
You won't average 40 mpg at 60 mph with that car unless you go to the extremes.