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:
Code:
km/h mph Wh/km Wh/mi W
10 6 23 37 230
20 12 25 40 509
30 19 30 48 887
36 22 33 53 1182
40 25 35 56 1414
50 31 43 69 2139
54 34 46 74 2495
60 37 52 83 3111
70 44 63 101 4381
80 50 75 120 5997
90 56 89 143 8010
100 62 105 168 10468
108 67 118 189 12789
110 69 122 196 13422
120 75 141 226 16920
130 81 162 260 21013
140 87 184 295 25749
150 94 208 333 31179
This is for motorbike (Cd=0.7, FA=0.7)
Code:
km/h mph Wh/km Wh/mi W
10 6 23 37 228
20 12 25 40 492
30 19 28 45 830
36 22 30 48 1083
40 25 32 51 1278
50 31 37 59 1873
54 34 40 64 2161
60 37 44 71 2652
70 44 52 83 3652
80 50 61 98 4909
90 56 72 115 6460
100 62 83 133 8342
108 67 94 151 10111
110 69 96 154 10592
120 75 110 176 13246
130 81 126 202 16342
140 87 142 228 19915
150 94 160 256 24004
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
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