Why does fuel economy get better on the highway, but EV range gets worse?
In: 463
Electric motors are approximately equally as energy efficient at all speeds but internal combustion engines have to be tuned to be efficient in a particular band… they can be very efficient at a specific speed but terrible elsewhere or tuned to be OK across a range but not brilliant anywhere…. The issue is that drag from air resistance goes up exponentially so combustion engines are tweaked to give OK acceleration and fuel performance across a range but absolutely they focus on the specific speed that open highway testing is carried out at as it tends to be just before drag really starts to climb…. also around town the EV can use regen braking to recover energy into the battery….
Latest Answers