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> Owning an electric car makes it very obvious how much smaller your range is when you drive 70-75mph than it is when you drive 50-55mph. I got optimal fuel co
by vonmoltke 7y ago
> Owning an electric car makes it very obvious how much smaller your range is when you drive 70-75mph than it is when you drive 50-55mph.
I got optimal fuel consumption in my Acura CL at an average speed of about 65 MPH. That maximal efficiency point varies from vehicle to vehicle, particularly across different vehicle classes.
- thinkling 7y agoI've heard that idea for a long time and have wondered about it: drag (air resistance) is dependent on the square of the velocity and in highway cruising where you're not accelerating, overcoming drag is a huge part of energy expended. How can the engine be tuned to be so inefficient at lower speeds that it somehow gets better fuel efficiency at higher speeds? And if that was ever a thing with older engines, is it still a thing with modern fuel-injected engines that sense performance and adjust fuel injection to optimize?