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Old 08-21-2012, 04:34 PM   #5 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,534

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 57.73 mpg (US)
Thanks: 4,082
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Quote:
Originally Posted by Maury Markowitz View Post
the amount of time my brake pads actually grip metal are probably reduced by 100 times.
You're on to something there.

Quote:
If I accelerate more slowly and use up the entire ramp lane plus a little of the slow lane before getting to 105, I can keep this down to 0.1.

Now mathematically, the two should be *very* close to equal, but they are not even remotely close in practice. Which is why I think I'm missing some obvious factor... or not so obvious maybe!
You may simply have illustrated the difference between operating the engine closer to its most efficient point on the BSFC map (slower accel), vs. higher accel. I assume your hybrid (what kind is it?) has a CVT, and it will try its best to adjust gearing during acceleration to stay close to the engine's "sweet spot", which is generally at a relatively low RPM. But when you put your foot in it and demand higher RPM/more power, it will concede, and overall fuel economy will drop.
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Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
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