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 jakobnev 08-10-2017 08:16 AM

Maximizing average speed with an electric car

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A while back there was a thread asking how fast you should go to maximize averege speed on a 1000 mile trip, I decided to try and solve a slightly simpler problem, i.e. Infinite trip, and charging stations everywhere:

Code:

```#include <stdio.h> int main(){   double cdA  =      0.7;  // m2   double crr  =      0.008;   double mass =    1500;    // kg   double para =    150;    // w   double batCap=  44000;    // wh   double chrgRte= 60000;    // w   double timeLoss=    2;    // minutes   double power, range, time, avg, vel;   printf("#  speed    power  range    time    avg\n");   for(int spd=10;spd<=250;spd+=5){   vel=spd/3.6;   power = para + vel*(0.5*1.225*vel*vel*cdA + crr*mass*9.81);   range = vel*(batCap*3.6)/power;   time = range/(vel*3.6);   avg = range/(timeLoss/60+time+batCap/chrgRte);   printf("%8.0i%10.2lf%8.2lf%8.2lf%8.2lf\n",spd,power,range,time,avg);   } }```

http://ecomodder.com/forum/attachmen...1&d=1502362835

I was a bit surprised at how high your optimum speed is.

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