Quote:
Originally Posted by Piwoslaw
Actually, most BSFC maps suggest that IC engines are most efficient around 80% load, with rpms around max torque.
The BSFC chart thread |
I've been able to test that. My average consumption on the flat at 75 km/h is 3,05 l/100. On a 2,5% average slope, at the same speed, the consumption didn't exceed 3,50 l/100 (5th gear, 1900 rpm, throttle pressed at about 75%). After calculating the power needed in both cases, the engine efficiency is 21% on the flat and 35% on that slope.