Electric Vehicles mileage database?
 

I found some physic/math formulas which allow me to calculate how much power and energy a vehicle needs to move at different speeds.
As all of you know this depends on vehicle Cd and Frontal Area, so I actually have a quite large range of values.
I'm looking for real data of different EVs at different speeds to compare to my simulation results: does it exist such kind of database around? And, most difficult, does it exist for motorbikes? (I wonder why motorbikes are so rare in vehicle mechanics literature!)

I currently have this data for an electric minicar (400 kg) with Cd=0.3 and FA=2.2 m^2:
This is for motorbike (Cd=0.7, FA=0.7)
W formula:
E1=(C$3+0,5*L$2*L$3*L$4*I1*I1)*I1

• C3=Rolling Friction (= roll friction coefficient 0,015 * weight x 9,81)
• L2=Cd
• L3=FA
• L4=air density = 1,167
• I1= speed in m/s

Wh/km formula:
D1=E1/J1

• J1 = speed in km/h

If there are no mileage data around, it will be enough to have Cd and FA for vehicles (bot cars and bikes), I'll calculate mileage by above formulas.

edit:
Values for flat road, constant speed.
update: added wh/km

edit2:
deleted "thousands dots"
added mph column

Not sure why, but both of those charts seem to give figures that are low.

I think it's because they are calculated for a constant speed on a flat road with 0% slope: impossible in real life! ;)
But you can consider these values as "mimimum energy consumption": you can't go lower, only higher.

As per my experience, average cosumptions are (more or less):
1000-2000 W Ebike: 30-50 Wh/km
3000-5000 W Ebike: 60-70 Wh/km
4-6 kW minicar (45 km/h): 80 Wh/km
6-8 kW minicar (80 km/h): 100 Wh/km
small car: 150 Wh/km
big car: 200 Wh/km

But having real and more detailed data would be really interesting!

Hi jumpjack,
So its in mostly conventional units but look: The ecomodder calculator.
Your chart doesn't seem to have any weight of vehicle. If I run with your Cd and area, I see this.
550 KG (1200 lb) is a very light car.
-mort

I think because it's in metric kilometers, which gives smaller values making everything seem more efficient.
Speaking about very light cars, check out the ridiculously efficient wh/m rating vs speed graph for the Edison2. 200 miles range at 60mph with 16kwh.
Edison2 - Very Light Blog - And The Consequences Are

Use the Calculator at the top of the forum. Use the KWH needed at speed / the speed to get the wh/km or mi rating.

I updated the tables adding Wh/mi.
The weight of the vehicle is included by means of rolling friction (--> rolling power), but it slightly affects result, as it depends on "v", while air friction depends on "v^3".

This table shows how much rolling friction affects total power:
Rolling friction force:
Froll = mu * m * 9,81
mu = 0,015 (rolling friction coefficient)
m = vehicle weight in kg

Simplified formula:
Froll = 0,15 * m

Cool, I didn't see the link. :) I eventually have something to compare my results to!

But you're right, I published results for a "very slight car" as I was studying power/energy for minicars!:o

Using a "real" car (1000 kg) I get of course higher results, but they also differ depending on battery weight, which depends on how much range you need, and so on....

But switching back to the original question: apart from simulated results, do they exist any experimental results to play with?

I just found this amazing site!
Automobile-Catalog the complete Catalog of Cars, car specs database

Does it exist anything similar for motorbikes?

This won't give you speed/whkm, but it gives you an idea of what all the EV's can do on a light drive cycle.
Testing Electric Vehicles in the Real World

I just found this amazing site!
Automobile-Catalog the complete Catalog of Cars, car specs database

Does it exist anything similar for motorbikes?