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Old 05-31-2018, 02:35 PM   #23 (permalink)
redpoint5
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Join Date: Aug 2010
Location: Oregon
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Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - CBR600 - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)

Model Y - '24 Tesla Y LR AWD

Pacifica Hybrid - '21 Chrysler Pacifica Hybrid
90 day: 85.85 mpg (US)
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Quote:
Originally Posted by Ecky View Post
My understanding is that the island of efficiency is more like ~75% rather than 30-50%.
Yeah, usually around 75% of peak torque, but about 35% of peak power. You'd want an aero car that at 100 MPH is producing 35% of peak power. I base that off of the BSFC chart I studied to understand how they work:



This assumes most of the driving done is at this speed. No sense optimizing the car to that speed if it's only occasional.

Really though, I'd probably get a used EV as a commuter and a nice ICE for longer trips. EVs are efficient at most any speed, and excel when stuck in traffic.
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