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Old 04-07-2020, 02:09 PM   #22 (permalink)
hayden55
Master EcoModder
 
Join Date: Dec 2010
Location: USA
Posts: 1,168

Sport Utility Prius - '10 Toyota Prius II
90 day: 52.98 mpg (US)

300k Sequoia 4WD - '01 Toyota Sequoia Limited 4wd
90 day: 20.19 mpg (US)
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Quote:
Originally Posted by Ecky View Post
That's probably true with fixed gearing, because load is *probably* more important than piston speed in the vast majority of cases.

But, let's say you have a hybrid vehicle, which can spin the engine at whatever RPM, and toggle it on and off whenever. Is it going to be more efficient to spin the engine at, say, 3000rpm 90% load for 30 seconds out of every minute, or to spin it at 1500rpm 90% load and leave it running all the time?
This is basically the difference between 40mpg in the Prius and 60mpg in the Prius. If... Its warm enough and the cars warm up protocol doesn't sabotage me.
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